Tomi Valkeinen | 3de7a1d | 2009-10-28 11:59:56 +0200 | [diff] [blame] | 1 | /* |
| 2 | * linux/drivers/video/omap2/dss/dsi.c |
| 3 | * |
| 4 | * Copyright (C) 2009 Nokia Corporation |
| 5 | * Author: Tomi Valkeinen <tomi.valkeinen@nokia.com> |
| 6 | * |
| 7 | * This program is free software; you can redistribute it and/or modify it |
| 8 | * under the terms of the GNU General Public License version 2 as published by |
| 9 | * the Free Software Foundation. |
| 10 | * |
| 11 | * This program is distributed in the hope that it will be useful, but WITHOUT |
| 12 | * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or |
| 13 | * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for |
| 14 | * more details. |
| 15 | * |
| 16 | * You should have received a copy of the GNU General Public License along with |
| 17 | * this program. If not, see <http://www.gnu.org/licenses/>. |
| 18 | */ |
| 19 | |
| 20 | #define DSS_SUBSYS_NAME "DSI" |
| 21 | |
| 22 | #include <linux/kernel.h> |
| 23 | #include <linux/io.h> |
| 24 | #include <linux/clk.h> |
| 25 | #include <linux/device.h> |
| 26 | #include <linux/err.h> |
| 27 | #include <linux/interrupt.h> |
| 28 | #include <linux/delay.h> |
| 29 | #include <linux/mutex.h> |
Tomi Valkeinen | b9eb5d7 | 2010-01-11 16:33:56 +0200 | [diff] [blame] | 30 | #include <linux/semaphore.h> |
Tomi Valkeinen | 3de7a1d | 2009-10-28 11:59:56 +0200 | [diff] [blame] | 31 | #include <linux/seq_file.h> |
| 32 | #include <linux/platform_device.h> |
| 33 | #include <linux/regulator/consumer.h> |
Tomi Valkeinen | 3de7a1d | 2009-10-28 11:59:56 +0200 | [diff] [blame] | 34 | #include <linux/wait.h> |
Tomi Valkeinen | 18946f6 | 2010-01-12 14:16:41 +0200 | [diff] [blame] | 35 | #include <linux/workqueue.h> |
Tomi Valkeinen | 40885ab | 2010-07-28 15:53:38 +0300 | [diff] [blame] | 36 | #include <linux/sched.h> |
Archit Taneja | f1da39d | 2011-05-12 17:26:27 +0530 | [diff] [blame] | 37 | #include <linux/slab.h> |
Archit Taneja | 5a8b572 | 2011-05-12 17:26:29 +0530 | [diff] [blame] | 38 | #include <linux/debugfs.h> |
Tomi Valkeinen | 4fbafaf | 2011-05-27 10:52:19 +0300 | [diff] [blame] | 39 | #include <linux/pm_runtime.h> |
Tomi Valkeinen | 3de7a1d | 2009-10-28 11:59:56 +0200 | [diff] [blame] | 40 | |
Tomi Valkeinen | a0b38cc | 2011-05-11 14:05:07 +0300 | [diff] [blame] | 41 | #include <video/omapdss.h> |
Archit Taneja | 7a7c48f | 2011-08-25 18:25:03 +0530 | [diff] [blame] | 42 | #include <video/mipi_display.h> |
Tomi Valkeinen | 3de7a1d | 2009-10-28 11:59:56 +0200 | [diff] [blame] | 43 | #include <plat/clock.h> |
| 44 | |
| 45 | #include "dss.h" |
Archit Taneja | 819d807 | 2011-03-01 11:54:00 +0530 | [diff] [blame] | 46 | #include "dss_features.h" |
Tomi Valkeinen | 3de7a1d | 2009-10-28 11:59:56 +0200 | [diff] [blame] | 47 | |
| 48 | /*#define VERBOSE_IRQ*/ |
| 49 | #define DSI_CATCH_MISSING_TE |
| 50 | |
Tomi Valkeinen | 3de7a1d | 2009-10-28 11:59:56 +0200 | [diff] [blame] | 51 | struct dsi_reg { u16 idx; }; |
| 52 | |
| 53 | #define DSI_REG(idx) ((const struct dsi_reg) { idx }) |
| 54 | |
| 55 | #define DSI_SZ_REGS SZ_1K |
| 56 | /* DSI Protocol Engine */ |
| 57 | |
| 58 | #define DSI_REVISION DSI_REG(0x0000) |
| 59 | #define DSI_SYSCONFIG DSI_REG(0x0010) |
| 60 | #define DSI_SYSSTATUS DSI_REG(0x0014) |
| 61 | #define DSI_IRQSTATUS DSI_REG(0x0018) |
| 62 | #define DSI_IRQENABLE DSI_REG(0x001C) |
| 63 | #define DSI_CTRL DSI_REG(0x0040) |
Archit Taneja | 75d7247 | 2011-05-16 15:17:08 +0530 | [diff] [blame] | 64 | #define DSI_GNQ DSI_REG(0x0044) |
Tomi Valkeinen | 3de7a1d | 2009-10-28 11:59:56 +0200 | [diff] [blame] | 65 | #define DSI_COMPLEXIO_CFG1 DSI_REG(0x0048) |
| 66 | #define DSI_COMPLEXIO_IRQ_STATUS DSI_REG(0x004C) |
| 67 | #define DSI_COMPLEXIO_IRQ_ENABLE DSI_REG(0x0050) |
| 68 | #define DSI_CLK_CTRL DSI_REG(0x0054) |
| 69 | #define DSI_TIMING1 DSI_REG(0x0058) |
| 70 | #define DSI_TIMING2 DSI_REG(0x005C) |
| 71 | #define DSI_VM_TIMING1 DSI_REG(0x0060) |
| 72 | #define DSI_VM_TIMING2 DSI_REG(0x0064) |
| 73 | #define DSI_VM_TIMING3 DSI_REG(0x0068) |
| 74 | #define DSI_CLK_TIMING DSI_REG(0x006C) |
| 75 | #define DSI_TX_FIFO_VC_SIZE DSI_REG(0x0070) |
| 76 | #define DSI_RX_FIFO_VC_SIZE DSI_REG(0x0074) |
| 77 | #define DSI_COMPLEXIO_CFG2 DSI_REG(0x0078) |
| 78 | #define DSI_RX_FIFO_VC_FULLNESS DSI_REG(0x007C) |
| 79 | #define DSI_VM_TIMING4 DSI_REG(0x0080) |
| 80 | #define DSI_TX_FIFO_VC_EMPTINESS DSI_REG(0x0084) |
| 81 | #define DSI_VM_TIMING5 DSI_REG(0x0088) |
| 82 | #define DSI_VM_TIMING6 DSI_REG(0x008C) |
| 83 | #define DSI_VM_TIMING7 DSI_REG(0x0090) |
| 84 | #define DSI_STOPCLK_TIMING DSI_REG(0x0094) |
| 85 | #define DSI_VC_CTRL(n) DSI_REG(0x0100 + (n * 0x20)) |
| 86 | #define DSI_VC_TE(n) DSI_REG(0x0104 + (n * 0x20)) |
| 87 | #define DSI_VC_LONG_PACKET_HEADER(n) DSI_REG(0x0108 + (n * 0x20)) |
| 88 | #define DSI_VC_LONG_PACKET_PAYLOAD(n) DSI_REG(0x010C + (n * 0x20)) |
| 89 | #define DSI_VC_SHORT_PACKET_HEADER(n) DSI_REG(0x0110 + (n * 0x20)) |
| 90 | #define DSI_VC_IRQSTATUS(n) DSI_REG(0x0118 + (n * 0x20)) |
| 91 | #define DSI_VC_IRQENABLE(n) DSI_REG(0x011C + (n * 0x20)) |
| 92 | |
| 93 | /* DSIPHY_SCP */ |
| 94 | |
| 95 | #define DSI_DSIPHY_CFG0 DSI_REG(0x200 + 0x0000) |
| 96 | #define DSI_DSIPHY_CFG1 DSI_REG(0x200 + 0x0004) |
| 97 | #define DSI_DSIPHY_CFG2 DSI_REG(0x200 + 0x0008) |
| 98 | #define DSI_DSIPHY_CFG5 DSI_REG(0x200 + 0x0014) |
Tomi Valkeinen | 0a0ee46 | 2010-07-27 11:11:48 +0300 | [diff] [blame] | 99 | #define DSI_DSIPHY_CFG10 DSI_REG(0x200 + 0x0028) |
Tomi Valkeinen | 3de7a1d | 2009-10-28 11:59:56 +0200 | [diff] [blame] | 100 | |
| 101 | /* DSI_PLL_CTRL_SCP */ |
| 102 | |
| 103 | #define DSI_PLL_CONTROL DSI_REG(0x300 + 0x0000) |
| 104 | #define DSI_PLL_STATUS DSI_REG(0x300 + 0x0004) |
| 105 | #define DSI_PLL_GO DSI_REG(0x300 + 0x0008) |
| 106 | #define DSI_PLL_CONFIGURATION1 DSI_REG(0x300 + 0x000C) |
| 107 | #define DSI_PLL_CONFIGURATION2 DSI_REG(0x300 + 0x0010) |
| 108 | |
Archit Taneja | a72b64b | 2011-05-12 17:26:26 +0530 | [diff] [blame] | 109 | #define REG_GET(dsidev, idx, start, end) \ |
| 110 | FLD_GET(dsi_read_reg(dsidev, idx), start, end) |
Tomi Valkeinen | 3de7a1d | 2009-10-28 11:59:56 +0200 | [diff] [blame] | 111 | |
Archit Taneja | a72b64b | 2011-05-12 17:26:26 +0530 | [diff] [blame] | 112 | #define REG_FLD_MOD(dsidev, idx, val, start, end) \ |
| 113 | dsi_write_reg(dsidev, idx, FLD_MOD(dsi_read_reg(dsidev, idx), val, start, end)) |
Tomi Valkeinen | 3de7a1d | 2009-10-28 11:59:56 +0200 | [diff] [blame] | 114 | |
| 115 | /* Global interrupts */ |
| 116 | #define DSI_IRQ_VC0 (1 << 0) |
| 117 | #define DSI_IRQ_VC1 (1 << 1) |
| 118 | #define DSI_IRQ_VC2 (1 << 2) |
| 119 | #define DSI_IRQ_VC3 (1 << 3) |
| 120 | #define DSI_IRQ_WAKEUP (1 << 4) |
| 121 | #define DSI_IRQ_RESYNC (1 << 5) |
| 122 | #define DSI_IRQ_PLL_LOCK (1 << 7) |
| 123 | #define DSI_IRQ_PLL_UNLOCK (1 << 8) |
| 124 | #define DSI_IRQ_PLL_RECALL (1 << 9) |
| 125 | #define DSI_IRQ_COMPLEXIO_ERR (1 << 10) |
| 126 | #define DSI_IRQ_HS_TX_TIMEOUT (1 << 14) |
| 127 | #define DSI_IRQ_LP_RX_TIMEOUT (1 << 15) |
| 128 | #define DSI_IRQ_TE_TRIGGER (1 << 16) |
| 129 | #define DSI_IRQ_ACK_TRIGGER (1 << 17) |
| 130 | #define DSI_IRQ_SYNC_LOST (1 << 18) |
| 131 | #define DSI_IRQ_LDO_POWER_GOOD (1 << 19) |
| 132 | #define DSI_IRQ_TA_TIMEOUT (1 << 20) |
| 133 | #define DSI_IRQ_ERROR_MASK \ |
| 134 | (DSI_IRQ_HS_TX_TIMEOUT | DSI_IRQ_LP_RX_TIMEOUT | DSI_IRQ_SYNC_LOST | \ |
| 135 | DSI_IRQ_TA_TIMEOUT) |
| 136 | #define DSI_IRQ_CHANNEL_MASK 0xf |
| 137 | |
| 138 | /* Virtual channel interrupts */ |
| 139 | #define DSI_VC_IRQ_CS (1 << 0) |
| 140 | #define DSI_VC_IRQ_ECC_CORR (1 << 1) |
| 141 | #define DSI_VC_IRQ_PACKET_SENT (1 << 2) |
| 142 | #define DSI_VC_IRQ_FIFO_TX_OVF (1 << 3) |
| 143 | #define DSI_VC_IRQ_FIFO_RX_OVF (1 << 4) |
| 144 | #define DSI_VC_IRQ_BTA (1 << 5) |
| 145 | #define DSI_VC_IRQ_ECC_NO_CORR (1 << 6) |
| 146 | #define DSI_VC_IRQ_FIFO_TX_UDF (1 << 7) |
| 147 | #define DSI_VC_IRQ_PP_BUSY_CHANGE (1 << 8) |
| 148 | #define DSI_VC_IRQ_ERROR_MASK \ |
| 149 | (DSI_VC_IRQ_CS | DSI_VC_IRQ_ECC_CORR | DSI_VC_IRQ_FIFO_TX_OVF | \ |
| 150 | DSI_VC_IRQ_FIFO_RX_OVF | DSI_VC_IRQ_ECC_NO_CORR | \ |
| 151 | DSI_VC_IRQ_FIFO_TX_UDF) |
| 152 | |
| 153 | /* ComplexIO interrupts */ |
| 154 | #define DSI_CIO_IRQ_ERRSYNCESC1 (1 << 0) |
| 155 | #define DSI_CIO_IRQ_ERRSYNCESC2 (1 << 1) |
| 156 | #define DSI_CIO_IRQ_ERRSYNCESC3 (1 << 2) |
Tomi Valkeinen | 6705615 | 2011-03-24 16:30:17 +0200 | [diff] [blame] | 157 | #define DSI_CIO_IRQ_ERRSYNCESC4 (1 << 3) |
| 158 | #define DSI_CIO_IRQ_ERRSYNCESC5 (1 << 4) |
Tomi Valkeinen | 3de7a1d | 2009-10-28 11:59:56 +0200 | [diff] [blame] | 159 | #define DSI_CIO_IRQ_ERRESC1 (1 << 5) |
| 160 | #define DSI_CIO_IRQ_ERRESC2 (1 << 6) |
| 161 | #define DSI_CIO_IRQ_ERRESC3 (1 << 7) |
Tomi Valkeinen | 6705615 | 2011-03-24 16:30:17 +0200 | [diff] [blame] | 162 | #define DSI_CIO_IRQ_ERRESC4 (1 << 8) |
| 163 | #define DSI_CIO_IRQ_ERRESC5 (1 << 9) |
Tomi Valkeinen | 3de7a1d | 2009-10-28 11:59:56 +0200 | [diff] [blame] | 164 | #define DSI_CIO_IRQ_ERRCONTROL1 (1 << 10) |
| 165 | #define DSI_CIO_IRQ_ERRCONTROL2 (1 << 11) |
| 166 | #define DSI_CIO_IRQ_ERRCONTROL3 (1 << 12) |
Tomi Valkeinen | 6705615 | 2011-03-24 16:30:17 +0200 | [diff] [blame] | 167 | #define DSI_CIO_IRQ_ERRCONTROL4 (1 << 13) |
| 168 | #define DSI_CIO_IRQ_ERRCONTROL5 (1 << 14) |
Tomi Valkeinen | 3de7a1d | 2009-10-28 11:59:56 +0200 | [diff] [blame] | 169 | #define DSI_CIO_IRQ_STATEULPS1 (1 << 15) |
| 170 | #define DSI_CIO_IRQ_STATEULPS2 (1 << 16) |
| 171 | #define DSI_CIO_IRQ_STATEULPS3 (1 << 17) |
Tomi Valkeinen | 6705615 | 2011-03-24 16:30:17 +0200 | [diff] [blame] | 172 | #define DSI_CIO_IRQ_STATEULPS4 (1 << 18) |
| 173 | #define DSI_CIO_IRQ_STATEULPS5 (1 << 19) |
Tomi Valkeinen | 3de7a1d | 2009-10-28 11:59:56 +0200 | [diff] [blame] | 174 | #define DSI_CIO_IRQ_ERRCONTENTIONLP0_1 (1 << 20) |
| 175 | #define DSI_CIO_IRQ_ERRCONTENTIONLP1_1 (1 << 21) |
| 176 | #define DSI_CIO_IRQ_ERRCONTENTIONLP0_2 (1 << 22) |
| 177 | #define DSI_CIO_IRQ_ERRCONTENTIONLP1_2 (1 << 23) |
| 178 | #define DSI_CIO_IRQ_ERRCONTENTIONLP0_3 (1 << 24) |
| 179 | #define DSI_CIO_IRQ_ERRCONTENTIONLP1_3 (1 << 25) |
Tomi Valkeinen | 6705615 | 2011-03-24 16:30:17 +0200 | [diff] [blame] | 180 | #define DSI_CIO_IRQ_ERRCONTENTIONLP0_4 (1 << 26) |
| 181 | #define DSI_CIO_IRQ_ERRCONTENTIONLP1_4 (1 << 27) |
| 182 | #define DSI_CIO_IRQ_ERRCONTENTIONLP0_5 (1 << 28) |
| 183 | #define DSI_CIO_IRQ_ERRCONTENTIONLP1_5 (1 << 29) |
Tomi Valkeinen | 3de7a1d | 2009-10-28 11:59:56 +0200 | [diff] [blame] | 184 | #define DSI_CIO_IRQ_ULPSACTIVENOT_ALL0 (1 << 30) |
| 185 | #define DSI_CIO_IRQ_ULPSACTIVENOT_ALL1 (1 << 31) |
Tomi Valkeinen | bbecb50 | 2010-05-10 14:35:33 +0300 | [diff] [blame] | 186 | #define DSI_CIO_IRQ_ERROR_MASK \ |
| 187 | (DSI_CIO_IRQ_ERRSYNCESC1 | DSI_CIO_IRQ_ERRSYNCESC2 | \ |
Tomi Valkeinen | 6705615 | 2011-03-24 16:30:17 +0200 | [diff] [blame] | 188 | DSI_CIO_IRQ_ERRSYNCESC3 | DSI_CIO_IRQ_ERRSYNCESC4 | \ |
| 189 | DSI_CIO_IRQ_ERRSYNCESC5 | \ |
| 190 | DSI_CIO_IRQ_ERRESC1 | DSI_CIO_IRQ_ERRESC2 | \ |
| 191 | DSI_CIO_IRQ_ERRESC3 | DSI_CIO_IRQ_ERRESC4 | \ |
| 192 | DSI_CIO_IRQ_ERRESC5 | \ |
| 193 | DSI_CIO_IRQ_ERRCONTROL1 | DSI_CIO_IRQ_ERRCONTROL2 | \ |
| 194 | DSI_CIO_IRQ_ERRCONTROL3 | DSI_CIO_IRQ_ERRCONTROL4 | \ |
| 195 | DSI_CIO_IRQ_ERRCONTROL5 | \ |
Tomi Valkeinen | bbecb50 | 2010-05-10 14:35:33 +0300 | [diff] [blame] | 196 | DSI_CIO_IRQ_ERRCONTENTIONLP0_1 | DSI_CIO_IRQ_ERRCONTENTIONLP1_1 | \ |
| 197 | DSI_CIO_IRQ_ERRCONTENTIONLP0_2 | DSI_CIO_IRQ_ERRCONTENTIONLP1_2 | \ |
Tomi Valkeinen | 6705615 | 2011-03-24 16:30:17 +0200 | [diff] [blame] | 198 | DSI_CIO_IRQ_ERRCONTENTIONLP0_3 | DSI_CIO_IRQ_ERRCONTENTIONLP1_3 | \ |
| 199 | DSI_CIO_IRQ_ERRCONTENTIONLP0_4 | DSI_CIO_IRQ_ERRCONTENTIONLP1_4 | \ |
| 200 | DSI_CIO_IRQ_ERRCONTENTIONLP0_5 | DSI_CIO_IRQ_ERRCONTENTIONLP1_5) |
Tomi Valkeinen | 3de7a1d | 2009-10-28 11:59:56 +0200 | [diff] [blame] | 201 | |
Tomi Valkeinen | 4ae2ddd | 2011-03-02 14:47:04 +0200 | [diff] [blame] | 202 | typedef void (*omap_dsi_isr_t) (void *arg, u32 mask); |
| 203 | |
| 204 | #define DSI_MAX_NR_ISRS 2 |
| 205 | |
| 206 | struct dsi_isr_data { |
| 207 | omap_dsi_isr_t isr; |
| 208 | void *arg; |
| 209 | u32 mask; |
| 210 | }; |
| 211 | |
Tomi Valkeinen | 3de7a1d | 2009-10-28 11:59:56 +0200 | [diff] [blame] | 212 | enum fifo_size { |
| 213 | DSI_FIFO_SIZE_0 = 0, |
| 214 | DSI_FIFO_SIZE_32 = 1, |
| 215 | DSI_FIFO_SIZE_64 = 2, |
| 216 | DSI_FIFO_SIZE_96 = 3, |
| 217 | DSI_FIFO_SIZE_128 = 4, |
| 218 | }; |
| 219 | |
Archit Taneja | d604914 | 2011-08-22 11:58:08 +0530 | [diff] [blame] | 220 | enum dsi_vc_source { |
| 221 | DSI_VC_SOURCE_L4 = 0, |
| 222 | DSI_VC_SOURCE_VP, |
Tomi Valkeinen | 3de7a1d | 2009-10-28 11:59:56 +0200 | [diff] [blame] | 223 | }; |
| 224 | |
Tomi Valkeinen | 0a0ee46 | 2010-07-27 11:11:48 +0300 | [diff] [blame] | 225 | enum dsi_lane { |
| 226 | DSI_CLK_P = 1 << 0, |
| 227 | DSI_CLK_N = 1 << 1, |
| 228 | DSI_DATA1_P = 1 << 2, |
| 229 | DSI_DATA1_N = 1 << 3, |
| 230 | DSI_DATA2_P = 1 << 4, |
| 231 | DSI_DATA2_N = 1 << 5, |
Archit Taneja | 75d7247 | 2011-05-16 15:17:08 +0530 | [diff] [blame] | 232 | DSI_DATA3_P = 1 << 6, |
| 233 | DSI_DATA3_N = 1 << 7, |
| 234 | DSI_DATA4_P = 1 << 8, |
| 235 | DSI_DATA4_N = 1 << 9, |
Tomi Valkeinen | 0a0ee46 | 2010-07-27 11:11:48 +0300 | [diff] [blame] | 236 | }; |
| 237 | |
Tomi Valkeinen | 3de7a1d | 2009-10-28 11:59:56 +0200 | [diff] [blame] | 238 | struct dsi_update_region { |
Tomi Valkeinen | 3de7a1d | 2009-10-28 11:59:56 +0200 | [diff] [blame] | 239 | u16 x, y, w, h; |
| 240 | struct omap_dss_device *device; |
| 241 | }; |
| 242 | |
Tomi Valkeinen | dfc0fd8 | 2009-12-17 14:35:21 +0200 | [diff] [blame] | 243 | struct dsi_irq_stats { |
| 244 | unsigned long last_reset; |
| 245 | unsigned irq_count; |
| 246 | unsigned dsi_irqs[32]; |
| 247 | unsigned vc_irqs[4][32]; |
| 248 | unsigned cio_irqs[32]; |
| 249 | }; |
| 250 | |
Tomi Valkeinen | 4ae2ddd | 2011-03-02 14:47:04 +0200 | [diff] [blame] | 251 | struct dsi_isr_tables { |
| 252 | struct dsi_isr_data isr_table[DSI_MAX_NR_ISRS]; |
| 253 | struct dsi_isr_data isr_table_vc[4][DSI_MAX_NR_ISRS]; |
| 254 | struct dsi_isr_data isr_table_cio[DSI_MAX_NR_ISRS]; |
| 255 | }; |
| 256 | |
Archit Taneja | f1da39d | 2011-05-12 17:26:27 +0530 | [diff] [blame] | 257 | struct dsi_data { |
Senthilvadivu Guruswamy | c8aac01 | 2011-01-24 06:22:02 +0000 | [diff] [blame] | 258 | struct platform_device *pdev; |
Tomi Valkeinen | 3de7a1d | 2009-10-28 11:59:56 +0200 | [diff] [blame] | 259 | void __iomem *base; |
Tomi Valkeinen | 4fbafaf | 2011-05-27 10:52:19 +0300 | [diff] [blame] | 260 | |
archit taneja | affe360 | 2011-02-23 08:41:03 +0000 | [diff] [blame] | 261 | int irq; |
Tomi Valkeinen | 3de7a1d | 2009-10-28 11:59:56 +0200 | [diff] [blame] | 262 | |
Tomi Valkeinen | 4fbafaf | 2011-05-27 10:52:19 +0300 | [diff] [blame] | 263 | struct clk *dss_clk; |
| 264 | struct clk *sys_clk; |
| 265 | |
Tomi Valkeinen | 5bc416c | 2011-06-15 15:21:12 +0300 | [diff] [blame] | 266 | int (*enable_pads)(int dsi_id, unsigned lane_mask); |
| 267 | void (*disable_pads)(int dsi_id, unsigned lane_mask); |
Tomi Valkeinen | d1f5857 | 2010-07-30 11:57:57 +0300 | [diff] [blame] | 268 | |
Tomi Valkeinen | 3de7a1d | 2009-10-28 11:59:56 +0200 | [diff] [blame] | 269 | struct dsi_clock_info current_cinfo; |
| 270 | |
Tomi Valkeinen | 2a89dc1 | 2010-07-30 12:39:34 +0300 | [diff] [blame] | 271 | bool vdds_dsi_enabled; |
Tomi Valkeinen | 3de7a1d | 2009-10-28 11:59:56 +0200 | [diff] [blame] | 272 | struct regulator *vdds_dsi_reg; |
| 273 | |
| 274 | struct { |
Archit Taneja | d604914 | 2011-08-22 11:58:08 +0530 | [diff] [blame] | 275 | enum dsi_vc_source source; |
Tomi Valkeinen | 3de7a1d | 2009-10-28 11:59:56 +0200 | [diff] [blame] | 276 | struct omap_dss_device *dssdev; |
| 277 | enum fifo_size fifo_size; |
Archit Taneja | 5ee3c14 | 2011-03-02 12:35:53 +0530 | [diff] [blame] | 278 | int vc_id; |
Tomi Valkeinen | 3de7a1d | 2009-10-28 11:59:56 +0200 | [diff] [blame] | 279 | } vc[4]; |
| 280 | |
| 281 | struct mutex lock; |
Tomi Valkeinen | b9eb5d7 | 2010-01-11 16:33:56 +0200 | [diff] [blame] | 282 | struct semaphore bus_lock; |
Tomi Valkeinen | 3de7a1d | 2009-10-28 11:59:56 +0200 | [diff] [blame] | 283 | |
| 284 | unsigned pll_locked; |
| 285 | |
Tomi Valkeinen | 4ae2ddd | 2011-03-02 14:47:04 +0200 | [diff] [blame] | 286 | spinlock_t irq_lock; |
| 287 | struct dsi_isr_tables isr_tables; |
| 288 | /* space for a copy used by the interrupt handler */ |
| 289 | struct dsi_isr_tables isr_tables_copy; |
| 290 | |
Tomi Valkeinen | 18946f6 | 2010-01-12 14:16:41 +0200 | [diff] [blame] | 291 | int update_channel; |
Tomi Valkeinen | 3de7a1d | 2009-10-28 11:59:56 +0200 | [diff] [blame] | 292 | struct dsi_update_region update_region; |
Tomi Valkeinen | 3de7a1d | 2009-10-28 11:59:56 +0200 | [diff] [blame] | 293 | |
Tomi Valkeinen | 3de7a1d | 2009-10-28 11:59:56 +0200 | [diff] [blame] | 294 | bool te_enabled; |
Tomi Valkeinen | 40885ab | 2010-07-28 15:53:38 +0300 | [diff] [blame] | 295 | bool ulps_enabled; |
Tomi Valkeinen | 3de7a1d | 2009-10-28 11:59:56 +0200 | [diff] [blame] | 296 | |
Tomi Valkeinen | 18946f6 | 2010-01-12 14:16:41 +0200 | [diff] [blame] | 297 | void (*framedone_callback)(int, void *); |
| 298 | void *framedone_data; |
| 299 | |
| 300 | struct delayed_work framedone_timeout_work; |
| 301 | |
Tomi Valkeinen | 3de7a1d | 2009-10-28 11:59:56 +0200 | [diff] [blame] | 302 | #ifdef DSI_CATCH_MISSING_TE |
| 303 | struct timer_list te_timer; |
| 304 | #endif |
| 305 | |
| 306 | unsigned long cache_req_pck; |
| 307 | unsigned long cache_clk_freq; |
| 308 | struct dsi_clock_info cache_cinfo; |
| 309 | |
| 310 | u32 errors; |
| 311 | spinlock_t errors_lock; |
| 312 | #ifdef DEBUG |
| 313 | ktime_t perf_setup_time; |
| 314 | ktime_t perf_start_time; |
Tomi Valkeinen | 3de7a1d | 2009-10-28 11:59:56 +0200 | [diff] [blame] | 315 | #endif |
| 316 | int debug_read; |
| 317 | int debug_write; |
Tomi Valkeinen | dfc0fd8 | 2009-12-17 14:35:21 +0200 | [diff] [blame] | 318 | |
| 319 | #ifdef CONFIG_OMAP2_DSS_COLLECT_IRQ_STATS |
| 320 | spinlock_t irq_stats_lock; |
| 321 | struct dsi_irq_stats irq_stats; |
| 322 | #endif |
Taneja, Archit | 4964111 | 2011-03-14 23:28:23 -0500 | [diff] [blame] | 323 | /* DSI PLL Parameter Ranges */ |
| 324 | unsigned long regm_max, regn_max; |
| 325 | unsigned long regm_dispc_max, regm_dsi_max; |
| 326 | unsigned long fint_min, fint_max; |
| 327 | unsigned long lpdiv_max; |
Tomi Valkeinen | 24c1ae4 | 2011-04-13 17:12:52 +0300 | [diff] [blame] | 328 | |
Archit Taneja | 75d7247 | 2011-05-16 15:17:08 +0530 | [diff] [blame] | 329 | int num_data_lanes; |
| 330 | |
Tomi Valkeinen | 24c1ae4 | 2011-04-13 17:12:52 +0300 | [diff] [blame] | 331 | unsigned scp_clk_refcount; |
Archit Taneja | f1da39d | 2011-05-12 17:26:27 +0530 | [diff] [blame] | 332 | }; |
Tomi Valkeinen | 3de7a1d | 2009-10-28 11:59:56 +0200 | [diff] [blame] | 333 | |
Archit Taneja | 2e868db | 2011-05-12 17:26:28 +0530 | [diff] [blame] | 334 | struct dsi_packet_sent_handler_data { |
| 335 | struct platform_device *dsidev; |
| 336 | struct completion *completion; |
| 337 | }; |
| 338 | |
Archit Taneja | a72b64b | 2011-05-12 17:26:26 +0530 | [diff] [blame] | 339 | static struct platform_device *dsi_pdev_map[MAX_NUM_DSI]; |
| 340 | |
Tomi Valkeinen | 3de7a1d | 2009-10-28 11:59:56 +0200 | [diff] [blame] | 341 | #ifdef DEBUG |
| 342 | static unsigned int dsi_perf; |
| 343 | module_param_named(dsi_perf, dsi_perf, bool, 0644); |
| 344 | #endif |
| 345 | |
Archit Taneja | f1da39d | 2011-05-12 17:26:27 +0530 | [diff] [blame] | 346 | static inline struct dsi_data *dsi_get_dsidrv_data(struct platform_device *dsidev) |
| 347 | { |
| 348 | return dev_get_drvdata(&dsidev->dev); |
| 349 | } |
| 350 | |
Archit Taneja | a72b64b | 2011-05-12 17:26:26 +0530 | [diff] [blame] | 351 | static inline struct platform_device *dsi_get_dsidev_from_dssdev(struct omap_dss_device *dssdev) |
| 352 | { |
| 353 | return dsi_pdev_map[dssdev->phy.dsi.module]; |
| 354 | } |
| 355 | |
| 356 | struct platform_device *dsi_get_dsidev_from_id(int module) |
| 357 | { |
| 358 | return dsi_pdev_map[module]; |
| 359 | } |
| 360 | |
Tomi Valkeinen | 7c68dd9 | 2011-08-03 14:00:57 +0300 | [diff] [blame] | 361 | static inline int dsi_get_dsidev_id(struct platform_device *dsidev) |
Archit Taneja | f1da39d | 2011-05-12 17:26:27 +0530 | [diff] [blame] | 362 | { |
Tomi Valkeinen | 7c68dd9 | 2011-08-03 14:00:57 +0300 | [diff] [blame] | 363 | return dsidev->id; |
Archit Taneja | f1da39d | 2011-05-12 17:26:27 +0530 | [diff] [blame] | 364 | } |
| 365 | |
Archit Taneja | a72b64b | 2011-05-12 17:26:26 +0530 | [diff] [blame] | 366 | static inline void dsi_write_reg(struct platform_device *dsidev, |
| 367 | const struct dsi_reg idx, u32 val) |
Tomi Valkeinen | 3de7a1d | 2009-10-28 11:59:56 +0200 | [diff] [blame] | 368 | { |
Archit Taneja | f1da39d | 2011-05-12 17:26:27 +0530 | [diff] [blame] | 369 | struct dsi_data *dsi = dsi_get_dsidrv_data(dsidev); |
| 370 | |
| 371 | __raw_writel(val, dsi->base + idx.idx); |
Tomi Valkeinen | 3de7a1d | 2009-10-28 11:59:56 +0200 | [diff] [blame] | 372 | } |
| 373 | |
Archit Taneja | a72b64b | 2011-05-12 17:26:26 +0530 | [diff] [blame] | 374 | static inline u32 dsi_read_reg(struct platform_device *dsidev, |
| 375 | const struct dsi_reg idx) |
Tomi Valkeinen | 3de7a1d | 2009-10-28 11:59:56 +0200 | [diff] [blame] | 376 | { |
Archit Taneja | f1da39d | 2011-05-12 17:26:27 +0530 | [diff] [blame] | 377 | struct dsi_data *dsi = dsi_get_dsidrv_data(dsidev); |
| 378 | |
| 379 | return __raw_readl(dsi->base + idx.idx); |
Tomi Valkeinen | 3de7a1d | 2009-10-28 11:59:56 +0200 | [diff] [blame] | 380 | } |
| 381 | |
Archit Taneja | 1ffefe7 | 2011-05-12 17:26:24 +0530 | [diff] [blame] | 382 | void dsi_bus_lock(struct omap_dss_device *dssdev) |
Tomi Valkeinen | 3de7a1d | 2009-10-28 11:59:56 +0200 | [diff] [blame] | 383 | { |
Archit Taneja | f1da39d | 2011-05-12 17:26:27 +0530 | [diff] [blame] | 384 | struct platform_device *dsidev = dsi_get_dsidev_from_dssdev(dssdev); |
| 385 | struct dsi_data *dsi = dsi_get_dsidrv_data(dsidev); |
| 386 | |
| 387 | down(&dsi->bus_lock); |
Tomi Valkeinen | 3de7a1d | 2009-10-28 11:59:56 +0200 | [diff] [blame] | 388 | } |
| 389 | EXPORT_SYMBOL(dsi_bus_lock); |
| 390 | |
Archit Taneja | 1ffefe7 | 2011-05-12 17:26:24 +0530 | [diff] [blame] | 391 | void dsi_bus_unlock(struct omap_dss_device *dssdev) |
Tomi Valkeinen | 3de7a1d | 2009-10-28 11:59:56 +0200 | [diff] [blame] | 392 | { |
Archit Taneja | f1da39d | 2011-05-12 17:26:27 +0530 | [diff] [blame] | 393 | struct platform_device *dsidev = dsi_get_dsidev_from_dssdev(dssdev); |
| 394 | struct dsi_data *dsi = dsi_get_dsidrv_data(dsidev); |
| 395 | |
| 396 | up(&dsi->bus_lock); |
Tomi Valkeinen | 3de7a1d | 2009-10-28 11:59:56 +0200 | [diff] [blame] | 397 | } |
| 398 | EXPORT_SYMBOL(dsi_bus_unlock); |
| 399 | |
Archit Taneja | a72b64b | 2011-05-12 17:26:26 +0530 | [diff] [blame] | 400 | static bool dsi_bus_is_locked(struct platform_device *dsidev) |
Tomi Valkeinen | 4f76502 | 2010-01-18 16:27:52 +0200 | [diff] [blame] | 401 | { |
Archit Taneja | f1da39d | 2011-05-12 17:26:27 +0530 | [diff] [blame] | 402 | struct dsi_data *dsi = dsi_get_dsidrv_data(dsidev); |
| 403 | |
| 404 | return dsi->bus_lock.count == 0; |
Tomi Valkeinen | 4f76502 | 2010-01-18 16:27:52 +0200 | [diff] [blame] | 405 | } |
| 406 | |
Tomi Valkeinen | f36a06e | 2011-03-02 14:48:41 +0200 | [diff] [blame] | 407 | static void dsi_completion_handler(void *data, u32 mask) |
| 408 | { |
| 409 | complete((struct completion *)data); |
| 410 | } |
| 411 | |
Archit Taneja | a72b64b | 2011-05-12 17:26:26 +0530 | [diff] [blame] | 412 | static inline int wait_for_bit_change(struct platform_device *dsidev, |
| 413 | const struct dsi_reg idx, int bitnum, int value) |
Tomi Valkeinen | 3de7a1d | 2009-10-28 11:59:56 +0200 | [diff] [blame] | 414 | { |
| 415 | int t = 100000; |
| 416 | |
Archit Taneja | a72b64b | 2011-05-12 17:26:26 +0530 | [diff] [blame] | 417 | while (REG_GET(dsidev, idx, bitnum, bitnum) != value) { |
Tomi Valkeinen | 3de7a1d | 2009-10-28 11:59:56 +0200 | [diff] [blame] | 418 | if (--t == 0) |
| 419 | return !value; |
| 420 | } |
| 421 | |
| 422 | return value; |
| 423 | } |
| 424 | |
| 425 | #ifdef DEBUG |
Archit Taneja | a72b64b | 2011-05-12 17:26:26 +0530 | [diff] [blame] | 426 | static void dsi_perf_mark_setup(struct platform_device *dsidev) |
Tomi Valkeinen | 3de7a1d | 2009-10-28 11:59:56 +0200 | [diff] [blame] | 427 | { |
Archit Taneja | f1da39d | 2011-05-12 17:26:27 +0530 | [diff] [blame] | 428 | struct dsi_data *dsi = dsi_get_dsidrv_data(dsidev); |
| 429 | dsi->perf_setup_time = ktime_get(); |
Tomi Valkeinen | 3de7a1d | 2009-10-28 11:59:56 +0200 | [diff] [blame] | 430 | } |
| 431 | |
Archit Taneja | a72b64b | 2011-05-12 17:26:26 +0530 | [diff] [blame] | 432 | static void dsi_perf_mark_start(struct platform_device *dsidev) |
Tomi Valkeinen | 3de7a1d | 2009-10-28 11:59:56 +0200 | [diff] [blame] | 433 | { |
Archit Taneja | f1da39d | 2011-05-12 17:26:27 +0530 | [diff] [blame] | 434 | struct dsi_data *dsi = dsi_get_dsidrv_data(dsidev); |
| 435 | dsi->perf_start_time = ktime_get(); |
Tomi Valkeinen | 3de7a1d | 2009-10-28 11:59:56 +0200 | [diff] [blame] | 436 | } |
| 437 | |
Archit Taneja | a72b64b | 2011-05-12 17:26:26 +0530 | [diff] [blame] | 438 | static void dsi_perf_show(struct platform_device *dsidev, const char *name) |
Tomi Valkeinen | 3de7a1d | 2009-10-28 11:59:56 +0200 | [diff] [blame] | 439 | { |
Archit Taneja | f1da39d | 2011-05-12 17:26:27 +0530 | [diff] [blame] | 440 | struct dsi_data *dsi = dsi_get_dsidrv_data(dsidev); |
Tomi Valkeinen | 3de7a1d | 2009-10-28 11:59:56 +0200 | [diff] [blame] | 441 | ktime_t t, setup_time, trans_time; |
| 442 | u32 total_bytes; |
| 443 | u32 setup_us, trans_us, total_us; |
| 444 | |
| 445 | if (!dsi_perf) |
| 446 | return; |
| 447 | |
Tomi Valkeinen | 3de7a1d | 2009-10-28 11:59:56 +0200 | [diff] [blame] | 448 | t = ktime_get(); |
| 449 | |
Archit Taneja | f1da39d | 2011-05-12 17:26:27 +0530 | [diff] [blame] | 450 | setup_time = ktime_sub(dsi->perf_start_time, dsi->perf_setup_time); |
Tomi Valkeinen | 3de7a1d | 2009-10-28 11:59:56 +0200 | [diff] [blame] | 451 | setup_us = (u32)ktime_to_us(setup_time); |
| 452 | if (setup_us == 0) |
| 453 | setup_us = 1; |
| 454 | |
Archit Taneja | f1da39d | 2011-05-12 17:26:27 +0530 | [diff] [blame] | 455 | trans_time = ktime_sub(t, dsi->perf_start_time); |
Tomi Valkeinen | 3de7a1d | 2009-10-28 11:59:56 +0200 | [diff] [blame] | 456 | trans_us = (u32)ktime_to_us(trans_time); |
| 457 | if (trans_us == 0) |
| 458 | trans_us = 1; |
| 459 | |
| 460 | total_us = setup_us + trans_us; |
| 461 | |
Archit Taneja | f1da39d | 2011-05-12 17:26:27 +0530 | [diff] [blame] | 462 | total_bytes = dsi->update_region.w * |
| 463 | dsi->update_region.h * |
| 464 | dsi->update_region.device->ctrl.pixel_size / 8; |
Tomi Valkeinen | 3de7a1d | 2009-10-28 11:59:56 +0200 | [diff] [blame] | 465 | |
Tomi Valkeinen | 1bbb275 | 2010-01-11 16:41:10 +0200 | [diff] [blame] | 466 | printk(KERN_INFO "DSI(%s): %u us + %u us = %u us (%uHz), " |
| 467 | "%u bytes, %u kbytes/sec\n", |
| 468 | name, |
| 469 | setup_us, |
| 470 | trans_us, |
| 471 | total_us, |
| 472 | 1000*1000 / total_us, |
| 473 | total_bytes, |
| 474 | total_bytes * 1000 / total_us); |
Tomi Valkeinen | 3de7a1d | 2009-10-28 11:59:56 +0200 | [diff] [blame] | 475 | } |
| 476 | #else |
Tomi Valkeinen | 4a9a5e3 | 2011-05-23 16:36:09 +0300 | [diff] [blame] | 477 | static inline void dsi_perf_mark_setup(struct platform_device *dsidev) |
| 478 | { |
| 479 | } |
| 480 | |
| 481 | static inline void dsi_perf_mark_start(struct platform_device *dsidev) |
| 482 | { |
| 483 | } |
| 484 | |
| 485 | static inline void dsi_perf_show(struct platform_device *dsidev, |
| 486 | const char *name) |
| 487 | { |
| 488 | } |
Tomi Valkeinen | 3de7a1d | 2009-10-28 11:59:56 +0200 | [diff] [blame] | 489 | #endif |
| 490 | |
| 491 | static void print_irq_status(u32 status) |
| 492 | { |
Tomi Valkeinen | d80d499 | 2011-03-02 15:53:07 +0200 | [diff] [blame] | 493 | if (status == 0) |
| 494 | return; |
| 495 | |
Tomi Valkeinen | 3de7a1d | 2009-10-28 11:59:56 +0200 | [diff] [blame] | 496 | #ifndef VERBOSE_IRQ |
| 497 | if ((status & ~DSI_IRQ_CHANNEL_MASK) == 0) |
| 498 | return; |
| 499 | #endif |
| 500 | printk(KERN_DEBUG "DSI IRQ: 0x%x: ", status); |
| 501 | |
| 502 | #define PIS(x) \ |
| 503 | if (status & DSI_IRQ_##x) \ |
| 504 | printk(#x " "); |
| 505 | #ifdef VERBOSE_IRQ |
| 506 | PIS(VC0); |
| 507 | PIS(VC1); |
| 508 | PIS(VC2); |
| 509 | PIS(VC3); |
| 510 | #endif |
| 511 | PIS(WAKEUP); |
| 512 | PIS(RESYNC); |
| 513 | PIS(PLL_LOCK); |
| 514 | PIS(PLL_UNLOCK); |
| 515 | PIS(PLL_RECALL); |
| 516 | PIS(COMPLEXIO_ERR); |
| 517 | PIS(HS_TX_TIMEOUT); |
| 518 | PIS(LP_RX_TIMEOUT); |
| 519 | PIS(TE_TRIGGER); |
| 520 | PIS(ACK_TRIGGER); |
| 521 | PIS(SYNC_LOST); |
| 522 | PIS(LDO_POWER_GOOD); |
| 523 | PIS(TA_TIMEOUT); |
| 524 | #undef PIS |
| 525 | |
| 526 | printk("\n"); |
| 527 | } |
| 528 | |
| 529 | static void print_irq_status_vc(int channel, u32 status) |
| 530 | { |
Tomi Valkeinen | d80d499 | 2011-03-02 15:53:07 +0200 | [diff] [blame] | 531 | if (status == 0) |
| 532 | return; |
| 533 | |
Tomi Valkeinen | 3de7a1d | 2009-10-28 11:59:56 +0200 | [diff] [blame] | 534 | #ifndef VERBOSE_IRQ |
| 535 | if ((status & ~DSI_VC_IRQ_PACKET_SENT) == 0) |
| 536 | return; |
| 537 | #endif |
| 538 | printk(KERN_DEBUG "DSI VC(%d) IRQ 0x%x: ", channel, status); |
| 539 | |
| 540 | #define PIS(x) \ |
| 541 | if (status & DSI_VC_IRQ_##x) \ |
| 542 | printk(#x " "); |
| 543 | PIS(CS); |
| 544 | PIS(ECC_CORR); |
| 545 | #ifdef VERBOSE_IRQ |
| 546 | PIS(PACKET_SENT); |
| 547 | #endif |
| 548 | PIS(FIFO_TX_OVF); |
| 549 | PIS(FIFO_RX_OVF); |
| 550 | PIS(BTA); |
| 551 | PIS(ECC_NO_CORR); |
| 552 | PIS(FIFO_TX_UDF); |
| 553 | PIS(PP_BUSY_CHANGE); |
| 554 | #undef PIS |
| 555 | printk("\n"); |
| 556 | } |
| 557 | |
| 558 | static void print_irq_status_cio(u32 status) |
| 559 | { |
Tomi Valkeinen | d80d499 | 2011-03-02 15:53:07 +0200 | [diff] [blame] | 560 | if (status == 0) |
| 561 | return; |
| 562 | |
Tomi Valkeinen | 3de7a1d | 2009-10-28 11:59:56 +0200 | [diff] [blame] | 563 | printk(KERN_DEBUG "DSI CIO IRQ 0x%x: ", status); |
| 564 | |
| 565 | #define PIS(x) \ |
| 566 | if (status & DSI_CIO_IRQ_##x) \ |
| 567 | printk(#x " "); |
| 568 | PIS(ERRSYNCESC1); |
| 569 | PIS(ERRSYNCESC2); |
| 570 | PIS(ERRSYNCESC3); |
| 571 | PIS(ERRESC1); |
| 572 | PIS(ERRESC2); |
| 573 | PIS(ERRESC3); |
| 574 | PIS(ERRCONTROL1); |
| 575 | PIS(ERRCONTROL2); |
| 576 | PIS(ERRCONTROL3); |
| 577 | PIS(STATEULPS1); |
| 578 | PIS(STATEULPS2); |
| 579 | PIS(STATEULPS3); |
| 580 | PIS(ERRCONTENTIONLP0_1); |
| 581 | PIS(ERRCONTENTIONLP1_1); |
| 582 | PIS(ERRCONTENTIONLP0_2); |
| 583 | PIS(ERRCONTENTIONLP1_2); |
| 584 | PIS(ERRCONTENTIONLP0_3); |
| 585 | PIS(ERRCONTENTIONLP1_3); |
| 586 | PIS(ULPSACTIVENOT_ALL0); |
| 587 | PIS(ULPSACTIVENOT_ALL1); |
| 588 | #undef PIS |
| 589 | |
| 590 | printk("\n"); |
| 591 | } |
| 592 | |
Tomi Valkeinen | 69b281a | 2011-03-02 14:44:27 +0200 | [diff] [blame] | 593 | #ifdef CONFIG_OMAP2_DSS_COLLECT_IRQ_STATS |
Archit Taneja | a72b64b | 2011-05-12 17:26:26 +0530 | [diff] [blame] | 594 | static void dsi_collect_irq_stats(struct platform_device *dsidev, u32 irqstatus, |
| 595 | u32 *vcstatus, u32 ciostatus) |
Tomi Valkeinen | 3de7a1d | 2009-10-28 11:59:56 +0200 | [diff] [blame] | 596 | { |
Archit Taneja | f1da39d | 2011-05-12 17:26:27 +0530 | [diff] [blame] | 597 | struct dsi_data *dsi = dsi_get_dsidrv_data(dsidev); |
Tomi Valkeinen | 3de7a1d | 2009-10-28 11:59:56 +0200 | [diff] [blame] | 598 | int i; |
| 599 | |
Archit Taneja | f1da39d | 2011-05-12 17:26:27 +0530 | [diff] [blame] | 600 | spin_lock(&dsi->irq_stats_lock); |
Tomi Valkeinen | 69b281a | 2011-03-02 14:44:27 +0200 | [diff] [blame] | 601 | |
Archit Taneja | f1da39d | 2011-05-12 17:26:27 +0530 | [diff] [blame] | 602 | dsi->irq_stats.irq_count++; |
| 603 | dss_collect_irq_stats(irqstatus, dsi->irq_stats.dsi_irqs); |
Tomi Valkeinen | 69b281a | 2011-03-02 14:44:27 +0200 | [diff] [blame] | 604 | |
| 605 | for (i = 0; i < 4; ++i) |
Archit Taneja | f1da39d | 2011-05-12 17:26:27 +0530 | [diff] [blame] | 606 | dss_collect_irq_stats(vcstatus[i], dsi->irq_stats.vc_irqs[i]); |
Tomi Valkeinen | 69b281a | 2011-03-02 14:44:27 +0200 | [diff] [blame] | 607 | |
Archit Taneja | f1da39d | 2011-05-12 17:26:27 +0530 | [diff] [blame] | 608 | dss_collect_irq_stats(ciostatus, dsi->irq_stats.cio_irqs); |
Tomi Valkeinen | 69b281a | 2011-03-02 14:44:27 +0200 | [diff] [blame] | 609 | |
Archit Taneja | f1da39d | 2011-05-12 17:26:27 +0530 | [diff] [blame] | 610 | spin_unlock(&dsi->irq_stats_lock); |
Tomi Valkeinen | 69b281a | 2011-03-02 14:44:27 +0200 | [diff] [blame] | 611 | } |
| 612 | #else |
Archit Taneja | a72b64b | 2011-05-12 17:26:26 +0530 | [diff] [blame] | 613 | #define dsi_collect_irq_stats(dsidev, irqstatus, vcstatus, ciostatus) |
Tomi Valkeinen | dfc0fd8 | 2009-12-17 14:35:21 +0200 | [diff] [blame] | 614 | #endif |
| 615 | |
Tomi Valkeinen | 69b281a | 2011-03-02 14:44:27 +0200 | [diff] [blame] | 616 | static int debug_irq; |
| 617 | |
Archit Taneja | a72b64b | 2011-05-12 17:26:26 +0530 | [diff] [blame] | 618 | static void dsi_handle_irq_errors(struct platform_device *dsidev, u32 irqstatus, |
| 619 | u32 *vcstatus, u32 ciostatus) |
Tomi Valkeinen | 69b281a | 2011-03-02 14:44:27 +0200 | [diff] [blame] | 620 | { |
Archit Taneja | f1da39d | 2011-05-12 17:26:27 +0530 | [diff] [blame] | 621 | struct dsi_data *dsi = dsi_get_dsidrv_data(dsidev); |
Tomi Valkeinen | 69b281a | 2011-03-02 14:44:27 +0200 | [diff] [blame] | 622 | int i; |
| 623 | |
Tomi Valkeinen | 3de7a1d | 2009-10-28 11:59:56 +0200 | [diff] [blame] | 624 | if (irqstatus & DSI_IRQ_ERROR_MASK) { |
| 625 | DSSERR("DSI error, irqstatus %x\n", irqstatus); |
| 626 | print_irq_status(irqstatus); |
Archit Taneja | f1da39d | 2011-05-12 17:26:27 +0530 | [diff] [blame] | 627 | spin_lock(&dsi->errors_lock); |
| 628 | dsi->errors |= irqstatus & DSI_IRQ_ERROR_MASK; |
| 629 | spin_unlock(&dsi->errors_lock); |
Tomi Valkeinen | 3de7a1d | 2009-10-28 11:59:56 +0200 | [diff] [blame] | 630 | } else if (debug_irq) { |
| 631 | print_irq_status(irqstatus); |
| 632 | } |
| 633 | |
Tomi Valkeinen | 69b281a | 2011-03-02 14:44:27 +0200 | [diff] [blame] | 634 | for (i = 0; i < 4; ++i) { |
| 635 | if (vcstatus[i] & DSI_VC_IRQ_ERROR_MASK) { |
| 636 | DSSERR("DSI VC(%d) error, vc irqstatus %x\n", |
| 637 | i, vcstatus[i]); |
| 638 | print_irq_status_vc(i, vcstatus[i]); |
| 639 | } else if (debug_irq) { |
| 640 | print_irq_status_vc(i, vcstatus[i]); |
| 641 | } |
| 642 | } |
| 643 | |
| 644 | if (ciostatus & DSI_CIO_IRQ_ERROR_MASK) { |
| 645 | DSSERR("DSI CIO error, cio irqstatus %x\n", ciostatus); |
| 646 | print_irq_status_cio(ciostatus); |
| 647 | } else if (debug_irq) { |
| 648 | print_irq_status_cio(ciostatus); |
| 649 | } |
| 650 | } |
| 651 | |
Tomi Valkeinen | 4ae2ddd | 2011-03-02 14:47:04 +0200 | [diff] [blame] | 652 | static void dsi_call_isrs(struct dsi_isr_data *isr_array, |
| 653 | unsigned isr_array_size, u32 irqstatus) |
| 654 | { |
| 655 | struct dsi_isr_data *isr_data; |
| 656 | int i; |
| 657 | |
| 658 | for (i = 0; i < isr_array_size; i++) { |
| 659 | isr_data = &isr_array[i]; |
| 660 | if (isr_data->isr && isr_data->mask & irqstatus) |
| 661 | isr_data->isr(isr_data->arg, irqstatus); |
| 662 | } |
| 663 | } |
| 664 | |
| 665 | static void dsi_handle_isrs(struct dsi_isr_tables *isr_tables, |
| 666 | u32 irqstatus, u32 *vcstatus, u32 ciostatus) |
| 667 | { |
| 668 | int i; |
| 669 | |
| 670 | dsi_call_isrs(isr_tables->isr_table, |
| 671 | ARRAY_SIZE(isr_tables->isr_table), |
| 672 | irqstatus); |
| 673 | |
| 674 | for (i = 0; i < 4; ++i) { |
| 675 | if (vcstatus[i] == 0) |
| 676 | continue; |
| 677 | dsi_call_isrs(isr_tables->isr_table_vc[i], |
| 678 | ARRAY_SIZE(isr_tables->isr_table_vc[i]), |
| 679 | vcstatus[i]); |
| 680 | } |
| 681 | |
| 682 | if (ciostatus != 0) |
| 683 | dsi_call_isrs(isr_tables->isr_table_cio, |
| 684 | ARRAY_SIZE(isr_tables->isr_table_cio), |
| 685 | ciostatus); |
| 686 | } |
| 687 | |
Tomi Valkeinen | 69b281a | 2011-03-02 14:44:27 +0200 | [diff] [blame] | 688 | static irqreturn_t omap_dsi_irq_handler(int irq, void *arg) |
| 689 | { |
Archit Taneja | a72b64b | 2011-05-12 17:26:26 +0530 | [diff] [blame] | 690 | struct platform_device *dsidev; |
Archit Taneja | f1da39d | 2011-05-12 17:26:27 +0530 | [diff] [blame] | 691 | struct dsi_data *dsi; |
Tomi Valkeinen | 69b281a | 2011-03-02 14:44:27 +0200 | [diff] [blame] | 692 | u32 irqstatus, vcstatus[4], ciostatus; |
| 693 | int i; |
| 694 | |
Archit Taneja | a72b64b | 2011-05-12 17:26:26 +0530 | [diff] [blame] | 695 | dsidev = (struct platform_device *) arg; |
Archit Taneja | f1da39d | 2011-05-12 17:26:27 +0530 | [diff] [blame] | 696 | dsi = dsi_get_dsidrv_data(dsidev); |
Archit Taneja | a72b64b | 2011-05-12 17:26:26 +0530 | [diff] [blame] | 697 | |
Archit Taneja | f1da39d | 2011-05-12 17:26:27 +0530 | [diff] [blame] | 698 | spin_lock(&dsi->irq_lock); |
Tomi Valkeinen | 4ae2ddd | 2011-03-02 14:47:04 +0200 | [diff] [blame] | 699 | |
Archit Taneja | a72b64b | 2011-05-12 17:26:26 +0530 | [diff] [blame] | 700 | irqstatus = dsi_read_reg(dsidev, DSI_IRQSTATUS); |
Tomi Valkeinen | 69b281a | 2011-03-02 14:44:27 +0200 | [diff] [blame] | 701 | |
| 702 | /* IRQ is not for us */ |
Tomi Valkeinen | 4ae2ddd | 2011-03-02 14:47:04 +0200 | [diff] [blame] | 703 | if (!irqstatus) { |
Archit Taneja | f1da39d | 2011-05-12 17:26:27 +0530 | [diff] [blame] | 704 | spin_unlock(&dsi->irq_lock); |
Tomi Valkeinen | 69b281a | 2011-03-02 14:44:27 +0200 | [diff] [blame] | 705 | return IRQ_NONE; |
Tomi Valkeinen | 4ae2ddd | 2011-03-02 14:47:04 +0200 | [diff] [blame] | 706 | } |
Tomi Valkeinen | 69b281a | 2011-03-02 14:44:27 +0200 | [diff] [blame] | 707 | |
Archit Taneja | a72b64b | 2011-05-12 17:26:26 +0530 | [diff] [blame] | 708 | dsi_write_reg(dsidev, DSI_IRQSTATUS, irqstatus & ~DSI_IRQ_CHANNEL_MASK); |
Tomi Valkeinen | 69b281a | 2011-03-02 14:44:27 +0200 | [diff] [blame] | 709 | /* flush posted write */ |
Archit Taneja | a72b64b | 2011-05-12 17:26:26 +0530 | [diff] [blame] | 710 | dsi_read_reg(dsidev, DSI_IRQSTATUS); |
Tomi Valkeinen | 3de7a1d | 2009-10-28 11:59:56 +0200 | [diff] [blame] | 711 | |
| 712 | for (i = 0; i < 4; ++i) { |
Tomi Valkeinen | 69b281a | 2011-03-02 14:44:27 +0200 | [diff] [blame] | 713 | if ((irqstatus & (1 << i)) == 0) { |
| 714 | vcstatus[i] = 0; |
Tomi Valkeinen | 3de7a1d | 2009-10-28 11:59:56 +0200 | [diff] [blame] | 715 | continue; |
Tomi Valkeinen | ab83b14 | 2010-06-09 15:31:01 +0300 | [diff] [blame] | 716 | } |
| 717 | |
Archit Taneja | a72b64b | 2011-05-12 17:26:26 +0530 | [diff] [blame] | 718 | vcstatus[i] = dsi_read_reg(dsidev, DSI_VC_IRQSTATUS(i)); |
Tomi Valkeinen | 3de7a1d | 2009-10-28 11:59:56 +0200 | [diff] [blame] | 719 | |
Archit Taneja | a72b64b | 2011-05-12 17:26:26 +0530 | [diff] [blame] | 720 | dsi_write_reg(dsidev, DSI_VC_IRQSTATUS(i), vcstatus[i]); |
Tomi Valkeinen | 3de7a1d | 2009-10-28 11:59:56 +0200 | [diff] [blame] | 721 | /* flush posted write */ |
Archit Taneja | a72b64b | 2011-05-12 17:26:26 +0530 | [diff] [blame] | 722 | dsi_read_reg(dsidev, DSI_VC_IRQSTATUS(i)); |
Tomi Valkeinen | 3de7a1d | 2009-10-28 11:59:56 +0200 | [diff] [blame] | 723 | } |
| 724 | |
| 725 | if (irqstatus & DSI_IRQ_COMPLEXIO_ERR) { |
Archit Taneja | a72b64b | 2011-05-12 17:26:26 +0530 | [diff] [blame] | 726 | ciostatus = dsi_read_reg(dsidev, DSI_COMPLEXIO_IRQ_STATUS); |
Tomi Valkeinen | 3de7a1d | 2009-10-28 11:59:56 +0200 | [diff] [blame] | 727 | |
Archit Taneja | a72b64b | 2011-05-12 17:26:26 +0530 | [diff] [blame] | 728 | dsi_write_reg(dsidev, DSI_COMPLEXIO_IRQ_STATUS, ciostatus); |
Tomi Valkeinen | 3de7a1d | 2009-10-28 11:59:56 +0200 | [diff] [blame] | 729 | /* flush posted write */ |
Archit Taneja | a72b64b | 2011-05-12 17:26:26 +0530 | [diff] [blame] | 730 | dsi_read_reg(dsidev, DSI_COMPLEXIO_IRQ_STATUS); |
Tomi Valkeinen | 69b281a | 2011-03-02 14:44:27 +0200 | [diff] [blame] | 731 | } else { |
| 732 | ciostatus = 0; |
| 733 | } |
Tomi Valkeinen | 3de7a1d | 2009-10-28 11:59:56 +0200 | [diff] [blame] | 734 | |
Tomi Valkeinen | 69b281a | 2011-03-02 14:44:27 +0200 | [diff] [blame] | 735 | #ifdef DSI_CATCH_MISSING_TE |
| 736 | if (irqstatus & DSI_IRQ_TE_TRIGGER) |
Archit Taneja | f1da39d | 2011-05-12 17:26:27 +0530 | [diff] [blame] | 737 | del_timer(&dsi->te_timer); |
Tomi Valkeinen | 69b281a | 2011-03-02 14:44:27 +0200 | [diff] [blame] | 738 | #endif |
| 739 | |
Tomi Valkeinen | 4ae2ddd | 2011-03-02 14:47:04 +0200 | [diff] [blame] | 740 | /* make a copy and unlock, so that isrs can unregister |
| 741 | * themselves */ |
Archit Taneja | f1da39d | 2011-05-12 17:26:27 +0530 | [diff] [blame] | 742 | memcpy(&dsi->isr_tables_copy, &dsi->isr_tables, |
| 743 | sizeof(dsi->isr_tables)); |
Tomi Valkeinen | 4ae2ddd | 2011-03-02 14:47:04 +0200 | [diff] [blame] | 744 | |
Archit Taneja | f1da39d | 2011-05-12 17:26:27 +0530 | [diff] [blame] | 745 | spin_unlock(&dsi->irq_lock); |
Tomi Valkeinen | 4ae2ddd | 2011-03-02 14:47:04 +0200 | [diff] [blame] | 746 | |
Archit Taneja | f1da39d | 2011-05-12 17:26:27 +0530 | [diff] [blame] | 747 | dsi_handle_isrs(&dsi->isr_tables_copy, irqstatus, vcstatus, ciostatus); |
Tomi Valkeinen | 4ae2ddd | 2011-03-02 14:47:04 +0200 | [diff] [blame] | 748 | |
Archit Taneja | a72b64b | 2011-05-12 17:26:26 +0530 | [diff] [blame] | 749 | dsi_handle_irq_errors(dsidev, irqstatus, vcstatus, ciostatus); |
Tomi Valkeinen | dfc0fd8 | 2009-12-17 14:35:21 +0200 | [diff] [blame] | 750 | |
Archit Taneja | a72b64b | 2011-05-12 17:26:26 +0530 | [diff] [blame] | 751 | dsi_collect_irq_stats(dsidev, irqstatus, vcstatus, ciostatus); |
Tomi Valkeinen | 69b281a | 2011-03-02 14:44:27 +0200 | [diff] [blame] | 752 | |
archit taneja | affe360 | 2011-02-23 08:41:03 +0000 | [diff] [blame] | 753 | return IRQ_HANDLED; |
Tomi Valkeinen | 3de7a1d | 2009-10-28 11:59:56 +0200 | [diff] [blame] | 754 | } |
| 755 | |
Archit Taneja | f1da39d | 2011-05-12 17:26:27 +0530 | [diff] [blame] | 756 | /* dsi->irq_lock has to be locked by the caller */ |
Archit Taneja | a72b64b | 2011-05-12 17:26:26 +0530 | [diff] [blame] | 757 | static void _omap_dsi_configure_irqs(struct platform_device *dsidev, |
| 758 | struct dsi_isr_data *isr_array, |
Tomi Valkeinen | 4ae2ddd | 2011-03-02 14:47:04 +0200 | [diff] [blame] | 759 | unsigned isr_array_size, u32 default_mask, |
| 760 | const struct dsi_reg enable_reg, |
| 761 | const struct dsi_reg status_reg) |
Tomi Valkeinen | 3de7a1d | 2009-10-28 11:59:56 +0200 | [diff] [blame] | 762 | { |
Tomi Valkeinen | 4ae2ddd | 2011-03-02 14:47:04 +0200 | [diff] [blame] | 763 | struct dsi_isr_data *isr_data; |
| 764 | u32 mask; |
| 765 | u32 old_mask; |
Tomi Valkeinen | 3de7a1d | 2009-10-28 11:59:56 +0200 | [diff] [blame] | 766 | int i; |
| 767 | |
Tomi Valkeinen | 4ae2ddd | 2011-03-02 14:47:04 +0200 | [diff] [blame] | 768 | mask = default_mask; |
Tomi Valkeinen | 3de7a1d | 2009-10-28 11:59:56 +0200 | [diff] [blame] | 769 | |
Tomi Valkeinen | 4ae2ddd | 2011-03-02 14:47:04 +0200 | [diff] [blame] | 770 | for (i = 0; i < isr_array_size; i++) { |
| 771 | isr_data = &isr_array[i]; |
Tomi Valkeinen | 3de7a1d | 2009-10-28 11:59:56 +0200 | [diff] [blame] | 772 | |
Tomi Valkeinen | 4ae2ddd | 2011-03-02 14:47:04 +0200 | [diff] [blame] | 773 | if (isr_data->isr == NULL) |
| 774 | continue; |
| 775 | |
| 776 | mask |= isr_data->mask; |
Tomi Valkeinen | 3de7a1d | 2009-10-28 11:59:56 +0200 | [diff] [blame] | 777 | } |
| 778 | |
Archit Taneja | a72b64b | 2011-05-12 17:26:26 +0530 | [diff] [blame] | 779 | old_mask = dsi_read_reg(dsidev, enable_reg); |
Tomi Valkeinen | 4ae2ddd | 2011-03-02 14:47:04 +0200 | [diff] [blame] | 780 | /* clear the irqstatus for newly enabled irqs */ |
Archit Taneja | a72b64b | 2011-05-12 17:26:26 +0530 | [diff] [blame] | 781 | dsi_write_reg(dsidev, status_reg, (mask ^ old_mask) & mask); |
| 782 | dsi_write_reg(dsidev, enable_reg, mask); |
Tomi Valkeinen | 3de7a1d | 2009-10-28 11:59:56 +0200 | [diff] [blame] | 783 | |
Tomi Valkeinen | 4ae2ddd | 2011-03-02 14:47:04 +0200 | [diff] [blame] | 784 | /* flush posted writes */ |
Archit Taneja | a72b64b | 2011-05-12 17:26:26 +0530 | [diff] [blame] | 785 | dsi_read_reg(dsidev, enable_reg); |
| 786 | dsi_read_reg(dsidev, status_reg); |
Tomi Valkeinen | 4ae2ddd | 2011-03-02 14:47:04 +0200 | [diff] [blame] | 787 | } |
| 788 | |
Archit Taneja | f1da39d | 2011-05-12 17:26:27 +0530 | [diff] [blame] | 789 | /* dsi->irq_lock has to be locked by the caller */ |
Archit Taneja | a72b64b | 2011-05-12 17:26:26 +0530 | [diff] [blame] | 790 | static void _omap_dsi_set_irqs(struct platform_device *dsidev) |
Tomi Valkeinen | 4ae2ddd | 2011-03-02 14:47:04 +0200 | [diff] [blame] | 791 | { |
Archit Taneja | f1da39d | 2011-05-12 17:26:27 +0530 | [diff] [blame] | 792 | struct dsi_data *dsi = dsi_get_dsidrv_data(dsidev); |
Tomi Valkeinen | 4ae2ddd | 2011-03-02 14:47:04 +0200 | [diff] [blame] | 793 | u32 mask = DSI_IRQ_ERROR_MASK; |
Tomi Valkeinen | 3de7a1d | 2009-10-28 11:59:56 +0200 | [diff] [blame] | 794 | #ifdef DSI_CATCH_MISSING_TE |
Tomi Valkeinen | 4ae2ddd | 2011-03-02 14:47:04 +0200 | [diff] [blame] | 795 | mask |= DSI_IRQ_TE_TRIGGER; |
Tomi Valkeinen | 3de7a1d | 2009-10-28 11:59:56 +0200 | [diff] [blame] | 796 | #endif |
Archit Taneja | f1da39d | 2011-05-12 17:26:27 +0530 | [diff] [blame] | 797 | _omap_dsi_configure_irqs(dsidev, dsi->isr_tables.isr_table, |
| 798 | ARRAY_SIZE(dsi->isr_tables.isr_table), mask, |
Tomi Valkeinen | 4ae2ddd | 2011-03-02 14:47:04 +0200 | [diff] [blame] | 799 | DSI_IRQENABLE, DSI_IRQSTATUS); |
| 800 | } |
Tomi Valkeinen | 3de7a1d | 2009-10-28 11:59:56 +0200 | [diff] [blame] | 801 | |
Archit Taneja | f1da39d | 2011-05-12 17:26:27 +0530 | [diff] [blame] | 802 | /* dsi->irq_lock has to be locked by the caller */ |
Archit Taneja | a72b64b | 2011-05-12 17:26:26 +0530 | [diff] [blame] | 803 | static void _omap_dsi_set_irqs_vc(struct platform_device *dsidev, int vc) |
Tomi Valkeinen | 4ae2ddd | 2011-03-02 14:47:04 +0200 | [diff] [blame] | 804 | { |
Archit Taneja | f1da39d | 2011-05-12 17:26:27 +0530 | [diff] [blame] | 805 | struct dsi_data *dsi = dsi_get_dsidrv_data(dsidev); |
| 806 | |
| 807 | _omap_dsi_configure_irqs(dsidev, dsi->isr_tables.isr_table_vc[vc], |
| 808 | ARRAY_SIZE(dsi->isr_tables.isr_table_vc[vc]), |
Tomi Valkeinen | 4ae2ddd | 2011-03-02 14:47:04 +0200 | [diff] [blame] | 809 | DSI_VC_IRQ_ERROR_MASK, |
| 810 | DSI_VC_IRQENABLE(vc), DSI_VC_IRQSTATUS(vc)); |
| 811 | } |
Tomi Valkeinen | 3de7a1d | 2009-10-28 11:59:56 +0200 | [diff] [blame] | 812 | |
Archit Taneja | f1da39d | 2011-05-12 17:26:27 +0530 | [diff] [blame] | 813 | /* dsi->irq_lock has to be locked by the caller */ |
Archit Taneja | a72b64b | 2011-05-12 17:26:26 +0530 | [diff] [blame] | 814 | static void _omap_dsi_set_irqs_cio(struct platform_device *dsidev) |
Tomi Valkeinen | 4ae2ddd | 2011-03-02 14:47:04 +0200 | [diff] [blame] | 815 | { |
Archit Taneja | f1da39d | 2011-05-12 17:26:27 +0530 | [diff] [blame] | 816 | struct dsi_data *dsi = dsi_get_dsidrv_data(dsidev); |
| 817 | |
| 818 | _omap_dsi_configure_irqs(dsidev, dsi->isr_tables.isr_table_cio, |
| 819 | ARRAY_SIZE(dsi->isr_tables.isr_table_cio), |
Tomi Valkeinen | 4ae2ddd | 2011-03-02 14:47:04 +0200 | [diff] [blame] | 820 | DSI_CIO_IRQ_ERROR_MASK, |
| 821 | DSI_COMPLEXIO_IRQ_ENABLE, DSI_COMPLEXIO_IRQ_STATUS); |
| 822 | } |
| 823 | |
Archit Taneja | a72b64b | 2011-05-12 17:26:26 +0530 | [diff] [blame] | 824 | static void _dsi_initialize_irq(struct platform_device *dsidev) |
Tomi Valkeinen | 4ae2ddd | 2011-03-02 14:47:04 +0200 | [diff] [blame] | 825 | { |
Archit Taneja | f1da39d | 2011-05-12 17:26:27 +0530 | [diff] [blame] | 826 | struct dsi_data *dsi = dsi_get_dsidrv_data(dsidev); |
Tomi Valkeinen | 4ae2ddd | 2011-03-02 14:47:04 +0200 | [diff] [blame] | 827 | unsigned long flags; |
| 828 | int vc; |
| 829 | |
Archit Taneja | f1da39d | 2011-05-12 17:26:27 +0530 | [diff] [blame] | 830 | spin_lock_irqsave(&dsi->irq_lock, flags); |
Tomi Valkeinen | 4ae2ddd | 2011-03-02 14:47:04 +0200 | [diff] [blame] | 831 | |
Archit Taneja | f1da39d | 2011-05-12 17:26:27 +0530 | [diff] [blame] | 832 | memset(&dsi->isr_tables, 0, sizeof(dsi->isr_tables)); |
Tomi Valkeinen | 4ae2ddd | 2011-03-02 14:47:04 +0200 | [diff] [blame] | 833 | |
Archit Taneja | a72b64b | 2011-05-12 17:26:26 +0530 | [diff] [blame] | 834 | _omap_dsi_set_irqs(dsidev); |
Tomi Valkeinen | 4ae2ddd | 2011-03-02 14:47:04 +0200 | [diff] [blame] | 835 | for (vc = 0; vc < 4; ++vc) |
Archit Taneja | a72b64b | 2011-05-12 17:26:26 +0530 | [diff] [blame] | 836 | _omap_dsi_set_irqs_vc(dsidev, vc); |
| 837 | _omap_dsi_set_irqs_cio(dsidev); |
Tomi Valkeinen | 4ae2ddd | 2011-03-02 14:47:04 +0200 | [diff] [blame] | 838 | |
Archit Taneja | f1da39d | 2011-05-12 17:26:27 +0530 | [diff] [blame] | 839 | spin_unlock_irqrestore(&dsi->irq_lock, flags); |
Tomi Valkeinen | 4ae2ddd | 2011-03-02 14:47:04 +0200 | [diff] [blame] | 840 | } |
| 841 | |
| 842 | static int _dsi_register_isr(omap_dsi_isr_t isr, void *arg, u32 mask, |
| 843 | struct dsi_isr_data *isr_array, unsigned isr_array_size) |
| 844 | { |
| 845 | struct dsi_isr_data *isr_data; |
| 846 | int free_idx; |
| 847 | int i; |
| 848 | |
| 849 | BUG_ON(isr == NULL); |
| 850 | |
| 851 | /* check for duplicate entry and find a free slot */ |
| 852 | free_idx = -1; |
| 853 | for (i = 0; i < isr_array_size; i++) { |
| 854 | isr_data = &isr_array[i]; |
| 855 | |
| 856 | if (isr_data->isr == isr && isr_data->arg == arg && |
| 857 | isr_data->mask == mask) { |
| 858 | return -EINVAL; |
| 859 | } |
| 860 | |
| 861 | if (isr_data->isr == NULL && free_idx == -1) |
| 862 | free_idx = i; |
| 863 | } |
| 864 | |
| 865 | if (free_idx == -1) |
| 866 | return -EBUSY; |
| 867 | |
| 868 | isr_data = &isr_array[free_idx]; |
| 869 | isr_data->isr = isr; |
| 870 | isr_data->arg = arg; |
| 871 | isr_data->mask = mask; |
| 872 | |
| 873 | return 0; |
| 874 | } |
| 875 | |
| 876 | static int _dsi_unregister_isr(omap_dsi_isr_t isr, void *arg, u32 mask, |
| 877 | struct dsi_isr_data *isr_array, unsigned isr_array_size) |
| 878 | { |
| 879 | struct dsi_isr_data *isr_data; |
| 880 | int i; |
| 881 | |
| 882 | for (i = 0; i < isr_array_size; i++) { |
| 883 | isr_data = &isr_array[i]; |
| 884 | if (isr_data->isr != isr || isr_data->arg != arg || |
| 885 | isr_data->mask != mask) |
| 886 | continue; |
| 887 | |
| 888 | isr_data->isr = NULL; |
| 889 | isr_data->arg = NULL; |
| 890 | isr_data->mask = 0; |
| 891 | |
| 892 | return 0; |
| 893 | } |
| 894 | |
| 895 | return -EINVAL; |
| 896 | } |
| 897 | |
Archit Taneja | a72b64b | 2011-05-12 17:26:26 +0530 | [diff] [blame] | 898 | static int dsi_register_isr(struct platform_device *dsidev, omap_dsi_isr_t isr, |
| 899 | void *arg, u32 mask) |
Tomi Valkeinen | 4ae2ddd | 2011-03-02 14:47:04 +0200 | [diff] [blame] | 900 | { |
Archit Taneja | f1da39d | 2011-05-12 17:26:27 +0530 | [diff] [blame] | 901 | struct dsi_data *dsi = dsi_get_dsidrv_data(dsidev); |
Tomi Valkeinen | 4ae2ddd | 2011-03-02 14:47:04 +0200 | [diff] [blame] | 902 | unsigned long flags; |
| 903 | int r; |
| 904 | |
Archit Taneja | f1da39d | 2011-05-12 17:26:27 +0530 | [diff] [blame] | 905 | spin_lock_irqsave(&dsi->irq_lock, flags); |
Tomi Valkeinen | 4ae2ddd | 2011-03-02 14:47:04 +0200 | [diff] [blame] | 906 | |
Archit Taneja | f1da39d | 2011-05-12 17:26:27 +0530 | [diff] [blame] | 907 | r = _dsi_register_isr(isr, arg, mask, dsi->isr_tables.isr_table, |
| 908 | ARRAY_SIZE(dsi->isr_tables.isr_table)); |
Tomi Valkeinen | 4ae2ddd | 2011-03-02 14:47:04 +0200 | [diff] [blame] | 909 | |
| 910 | if (r == 0) |
Archit Taneja | a72b64b | 2011-05-12 17:26:26 +0530 | [diff] [blame] | 911 | _omap_dsi_set_irqs(dsidev); |
Tomi Valkeinen | 4ae2ddd | 2011-03-02 14:47:04 +0200 | [diff] [blame] | 912 | |
Archit Taneja | f1da39d | 2011-05-12 17:26:27 +0530 | [diff] [blame] | 913 | spin_unlock_irqrestore(&dsi->irq_lock, flags); |
Tomi Valkeinen | 4ae2ddd | 2011-03-02 14:47:04 +0200 | [diff] [blame] | 914 | |
| 915 | return r; |
| 916 | } |
| 917 | |
Archit Taneja | a72b64b | 2011-05-12 17:26:26 +0530 | [diff] [blame] | 918 | static int dsi_unregister_isr(struct platform_device *dsidev, |
| 919 | omap_dsi_isr_t isr, void *arg, u32 mask) |
Tomi Valkeinen | 4ae2ddd | 2011-03-02 14:47:04 +0200 | [diff] [blame] | 920 | { |
Archit Taneja | f1da39d | 2011-05-12 17:26:27 +0530 | [diff] [blame] | 921 | struct dsi_data *dsi = dsi_get_dsidrv_data(dsidev); |
Tomi Valkeinen | 4ae2ddd | 2011-03-02 14:47:04 +0200 | [diff] [blame] | 922 | unsigned long flags; |
| 923 | int r; |
| 924 | |
Archit Taneja | f1da39d | 2011-05-12 17:26:27 +0530 | [diff] [blame] | 925 | spin_lock_irqsave(&dsi->irq_lock, flags); |
Tomi Valkeinen | 4ae2ddd | 2011-03-02 14:47:04 +0200 | [diff] [blame] | 926 | |
Archit Taneja | f1da39d | 2011-05-12 17:26:27 +0530 | [diff] [blame] | 927 | r = _dsi_unregister_isr(isr, arg, mask, dsi->isr_tables.isr_table, |
| 928 | ARRAY_SIZE(dsi->isr_tables.isr_table)); |
Tomi Valkeinen | 4ae2ddd | 2011-03-02 14:47:04 +0200 | [diff] [blame] | 929 | |
| 930 | if (r == 0) |
Archit Taneja | a72b64b | 2011-05-12 17:26:26 +0530 | [diff] [blame] | 931 | _omap_dsi_set_irqs(dsidev); |
Tomi Valkeinen | 4ae2ddd | 2011-03-02 14:47:04 +0200 | [diff] [blame] | 932 | |
Archit Taneja | f1da39d | 2011-05-12 17:26:27 +0530 | [diff] [blame] | 933 | spin_unlock_irqrestore(&dsi->irq_lock, flags); |
Tomi Valkeinen | 4ae2ddd | 2011-03-02 14:47:04 +0200 | [diff] [blame] | 934 | |
| 935 | return r; |
| 936 | } |
| 937 | |
Archit Taneja | a72b64b | 2011-05-12 17:26:26 +0530 | [diff] [blame] | 938 | static int dsi_register_isr_vc(struct platform_device *dsidev, int channel, |
| 939 | omap_dsi_isr_t isr, void *arg, u32 mask) |
Tomi Valkeinen | 4ae2ddd | 2011-03-02 14:47:04 +0200 | [diff] [blame] | 940 | { |
Archit Taneja | f1da39d | 2011-05-12 17:26:27 +0530 | [diff] [blame] | 941 | struct dsi_data *dsi = dsi_get_dsidrv_data(dsidev); |
Tomi Valkeinen | 4ae2ddd | 2011-03-02 14:47:04 +0200 | [diff] [blame] | 942 | unsigned long flags; |
| 943 | int r; |
| 944 | |
Archit Taneja | f1da39d | 2011-05-12 17:26:27 +0530 | [diff] [blame] | 945 | spin_lock_irqsave(&dsi->irq_lock, flags); |
Tomi Valkeinen | 4ae2ddd | 2011-03-02 14:47:04 +0200 | [diff] [blame] | 946 | |
| 947 | r = _dsi_register_isr(isr, arg, mask, |
Archit Taneja | f1da39d | 2011-05-12 17:26:27 +0530 | [diff] [blame] | 948 | dsi->isr_tables.isr_table_vc[channel], |
| 949 | ARRAY_SIZE(dsi->isr_tables.isr_table_vc[channel])); |
Tomi Valkeinen | 4ae2ddd | 2011-03-02 14:47:04 +0200 | [diff] [blame] | 950 | |
| 951 | if (r == 0) |
Archit Taneja | a72b64b | 2011-05-12 17:26:26 +0530 | [diff] [blame] | 952 | _omap_dsi_set_irqs_vc(dsidev, channel); |
Tomi Valkeinen | 4ae2ddd | 2011-03-02 14:47:04 +0200 | [diff] [blame] | 953 | |
Archit Taneja | f1da39d | 2011-05-12 17:26:27 +0530 | [diff] [blame] | 954 | spin_unlock_irqrestore(&dsi->irq_lock, flags); |
Tomi Valkeinen | 4ae2ddd | 2011-03-02 14:47:04 +0200 | [diff] [blame] | 955 | |
| 956 | return r; |
| 957 | } |
| 958 | |
Archit Taneja | a72b64b | 2011-05-12 17:26:26 +0530 | [diff] [blame] | 959 | static int dsi_unregister_isr_vc(struct platform_device *dsidev, int channel, |
| 960 | omap_dsi_isr_t isr, void *arg, u32 mask) |
Tomi Valkeinen | 4ae2ddd | 2011-03-02 14:47:04 +0200 | [diff] [blame] | 961 | { |
Archit Taneja | f1da39d | 2011-05-12 17:26:27 +0530 | [diff] [blame] | 962 | struct dsi_data *dsi = dsi_get_dsidrv_data(dsidev); |
Tomi Valkeinen | 4ae2ddd | 2011-03-02 14:47:04 +0200 | [diff] [blame] | 963 | unsigned long flags; |
| 964 | int r; |
| 965 | |
Archit Taneja | f1da39d | 2011-05-12 17:26:27 +0530 | [diff] [blame] | 966 | spin_lock_irqsave(&dsi->irq_lock, flags); |
Tomi Valkeinen | 4ae2ddd | 2011-03-02 14:47:04 +0200 | [diff] [blame] | 967 | |
| 968 | r = _dsi_unregister_isr(isr, arg, mask, |
Archit Taneja | f1da39d | 2011-05-12 17:26:27 +0530 | [diff] [blame] | 969 | dsi->isr_tables.isr_table_vc[channel], |
| 970 | ARRAY_SIZE(dsi->isr_tables.isr_table_vc[channel])); |
Tomi Valkeinen | 4ae2ddd | 2011-03-02 14:47:04 +0200 | [diff] [blame] | 971 | |
| 972 | if (r == 0) |
Archit Taneja | a72b64b | 2011-05-12 17:26:26 +0530 | [diff] [blame] | 973 | _omap_dsi_set_irqs_vc(dsidev, channel); |
Tomi Valkeinen | 4ae2ddd | 2011-03-02 14:47:04 +0200 | [diff] [blame] | 974 | |
Archit Taneja | f1da39d | 2011-05-12 17:26:27 +0530 | [diff] [blame] | 975 | spin_unlock_irqrestore(&dsi->irq_lock, flags); |
Tomi Valkeinen | 4ae2ddd | 2011-03-02 14:47:04 +0200 | [diff] [blame] | 976 | |
| 977 | return r; |
| 978 | } |
| 979 | |
Archit Taneja | a72b64b | 2011-05-12 17:26:26 +0530 | [diff] [blame] | 980 | static int dsi_register_isr_cio(struct platform_device *dsidev, |
| 981 | omap_dsi_isr_t isr, void *arg, u32 mask) |
Tomi Valkeinen | 4ae2ddd | 2011-03-02 14:47:04 +0200 | [diff] [blame] | 982 | { |
Archit Taneja | f1da39d | 2011-05-12 17:26:27 +0530 | [diff] [blame] | 983 | struct dsi_data *dsi = dsi_get_dsidrv_data(dsidev); |
Tomi Valkeinen | 4ae2ddd | 2011-03-02 14:47:04 +0200 | [diff] [blame] | 984 | unsigned long flags; |
| 985 | int r; |
| 986 | |
Archit Taneja | f1da39d | 2011-05-12 17:26:27 +0530 | [diff] [blame] | 987 | spin_lock_irqsave(&dsi->irq_lock, flags); |
Tomi Valkeinen | 4ae2ddd | 2011-03-02 14:47:04 +0200 | [diff] [blame] | 988 | |
Archit Taneja | f1da39d | 2011-05-12 17:26:27 +0530 | [diff] [blame] | 989 | r = _dsi_register_isr(isr, arg, mask, dsi->isr_tables.isr_table_cio, |
| 990 | ARRAY_SIZE(dsi->isr_tables.isr_table_cio)); |
Tomi Valkeinen | 4ae2ddd | 2011-03-02 14:47:04 +0200 | [diff] [blame] | 991 | |
| 992 | if (r == 0) |
Archit Taneja | a72b64b | 2011-05-12 17:26:26 +0530 | [diff] [blame] | 993 | _omap_dsi_set_irqs_cio(dsidev); |
Tomi Valkeinen | 4ae2ddd | 2011-03-02 14:47:04 +0200 | [diff] [blame] | 994 | |
Archit Taneja | f1da39d | 2011-05-12 17:26:27 +0530 | [diff] [blame] | 995 | spin_unlock_irqrestore(&dsi->irq_lock, flags); |
Tomi Valkeinen | 4ae2ddd | 2011-03-02 14:47:04 +0200 | [diff] [blame] | 996 | |
| 997 | return r; |
| 998 | } |
| 999 | |
Archit Taneja | a72b64b | 2011-05-12 17:26:26 +0530 | [diff] [blame] | 1000 | static int dsi_unregister_isr_cio(struct platform_device *dsidev, |
| 1001 | omap_dsi_isr_t isr, void *arg, u32 mask) |
Tomi Valkeinen | 4ae2ddd | 2011-03-02 14:47:04 +0200 | [diff] [blame] | 1002 | { |
Archit Taneja | f1da39d | 2011-05-12 17:26:27 +0530 | [diff] [blame] | 1003 | struct dsi_data *dsi = dsi_get_dsidrv_data(dsidev); |
Tomi Valkeinen | 4ae2ddd | 2011-03-02 14:47:04 +0200 | [diff] [blame] | 1004 | unsigned long flags; |
| 1005 | int r; |
| 1006 | |
Archit Taneja | f1da39d | 2011-05-12 17:26:27 +0530 | [diff] [blame] | 1007 | spin_lock_irqsave(&dsi->irq_lock, flags); |
Tomi Valkeinen | 4ae2ddd | 2011-03-02 14:47:04 +0200 | [diff] [blame] | 1008 | |
Archit Taneja | f1da39d | 2011-05-12 17:26:27 +0530 | [diff] [blame] | 1009 | r = _dsi_unregister_isr(isr, arg, mask, dsi->isr_tables.isr_table_cio, |
| 1010 | ARRAY_SIZE(dsi->isr_tables.isr_table_cio)); |
Tomi Valkeinen | 4ae2ddd | 2011-03-02 14:47:04 +0200 | [diff] [blame] | 1011 | |
| 1012 | if (r == 0) |
Archit Taneja | a72b64b | 2011-05-12 17:26:26 +0530 | [diff] [blame] | 1013 | _omap_dsi_set_irqs_cio(dsidev); |
Tomi Valkeinen | 4ae2ddd | 2011-03-02 14:47:04 +0200 | [diff] [blame] | 1014 | |
Archit Taneja | f1da39d | 2011-05-12 17:26:27 +0530 | [diff] [blame] | 1015 | spin_unlock_irqrestore(&dsi->irq_lock, flags); |
Tomi Valkeinen | 4ae2ddd | 2011-03-02 14:47:04 +0200 | [diff] [blame] | 1016 | |
| 1017 | return r; |
Tomi Valkeinen | 3de7a1d | 2009-10-28 11:59:56 +0200 | [diff] [blame] | 1018 | } |
| 1019 | |
Archit Taneja | a72b64b | 2011-05-12 17:26:26 +0530 | [diff] [blame] | 1020 | static u32 dsi_get_errors(struct platform_device *dsidev) |
Tomi Valkeinen | 3de7a1d | 2009-10-28 11:59:56 +0200 | [diff] [blame] | 1021 | { |
Archit Taneja | f1da39d | 2011-05-12 17:26:27 +0530 | [diff] [blame] | 1022 | struct dsi_data *dsi = dsi_get_dsidrv_data(dsidev); |
Tomi Valkeinen | 3de7a1d | 2009-10-28 11:59:56 +0200 | [diff] [blame] | 1023 | unsigned long flags; |
| 1024 | u32 e; |
Archit Taneja | f1da39d | 2011-05-12 17:26:27 +0530 | [diff] [blame] | 1025 | spin_lock_irqsave(&dsi->errors_lock, flags); |
| 1026 | e = dsi->errors; |
| 1027 | dsi->errors = 0; |
| 1028 | spin_unlock_irqrestore(&dsi->errors_lock, flags); |
Tomi Valkeinen | 3de7a1d | 2009-10-28 11:59:56 +0200 | [diff] [blame] | 1029 | return e; |
| 1030 | } |
| 1031 | |
Tomi Valkeinen | 4fbafaf | 2011-05-27 10:52:19 +0300 | [diff] [blame] | 1032 | int dsi_runtime_get(struct platform_device *dsidev) |
Tomi Valkeinen | 3de7a1d | 2009-10-28 11:59:56 +0200 | [diff] [blame] | 1033 | { |
Tomi Valkeinen | 4fbafaf | 2011-05-27 10:52:19 +0300 | [diff] [blame] | 1034 | int r; |
| 1035 | struct dsi_data *dsi = dsi_get_dsidrv_data(dsidev); |
| 1036 | |
| 1037 | DSSDBG("dsi_runtime_get\n"); |
| 1038 | |
| 1039 | r = pm_runtime_get_sync(&dsi->pdev->dev); |
| 1040 | WARN_ON(r < 0); |
| 1041 | return r < 0 ? r : 0; |
| 1042 | } |
| 1043 | |
| 1044 | void dsi_runtime_put(struct platform_device *dsidev) |
| 1045 | { |
| 1046 | struct dsi_data *dsi = dsi_get_dsidrv_data(dsidev); |
| 1047 | int r; |
| 1048 | |
| 1049 | DSSDBG("dsi_runtime_put\n"); |
| 1050 | |
| 1051 | r = pm_runtime_put(&dsi->pdev->dev); |
| 1052 | WARN_ON(r < 0); |
Tomi Valkeinen | 3de7a1d | 2009-10-28 11:59:56 +0200 | [diff] [blame] | 1053 | } |
| 1054 | |
| 1055 | /* source clock for DSI PLL. this could also be PCLKFREE */ |
Archit Taneja | a72b64b | 2011-05-12 17:26:26 +0530 | [diff] [blame] | 1056 | static inline void dsi_enable_pll_clock(struct platform_device *dsidev, |
| 1057 | bool enable) |
Tomi Valkeinen | 3de7a1d | 2009-10-28 11:59:56 +0200 | [diff] [blame] | 1058 | { |
Archit Taneja | f1da39d | 2011-05-12 17:26:27 +0530 | [diff] [blame] | 1059 | struct dsi_data *dsi = dsi_get_dsidrv_data(dsidev); |
| 1060 | |
Tomi Valkeinen | 3de7a1d | 2009-10-28 11:59:56 +0200 | [diff] [blame] | 1061 | if (enable) |
Tomi Valkeinen | 4fbafaf | 2011-05-27 10:52:19 +0300 | [diff] [blame] | 1062 | clk_enable(dsi->sys_clk); |
Tomi Valkeinen | 3de7a1d | 2009-10-28 11:59:56 +0200 | [diff] [blame] | 1063 | else |
Tomi Valkeinen | 4fbafaf | 2011-05-27 10:52:19 +0300 | [diff] [blame] | 1064 | clk_disable(dsi->sys_clk); |
Tomi Valkeinen | 3de7a1d | 2009-10-28 11:59:56 +0200 | [diff] [blame] | 1065 | |
Archit Taneja | f1da39d | 2011-05-12 17:26:27 +0530 | [diff] [blame] | 1066 | if (enable && dsi->pll_locked) { |
Archit Taneja | a72b64b | 2011-05-12 17:26:26 +0530 | [diff] [blame] | 1067 | if (wait_for_bit_change(dsidev, DSI_PLL_STATUS, 1, 1) != 1) |
Tomi Valkeinen | 3de7a1d | 2009-10-28 11:59:56 +0200 | [diff] [blame] | 1068 | DSSERR("cannot lock PLL when enabling clocks\n"); |
| 1069 | } |
| 1070 | } |
| 1071 | |
| 1072 | #ifdef DEBUG |
Archit Taneja | a72b64b | 2011-05-12 17:26:26 +0530 | [diff] [blame] | 1073 | static void _dsi_print_reset_status(struct platform_device *dsidev) |
Tomi Valkeinen | 3de7a1d | 2009-10-28 11:59:56 +0200 | [diff] [blame] | 1074 | { |
| 1075 | u32 l; |
Tomi Valkeinen | c335cbf | 2010-10-07 13:27:42 +0300 | [diff] [blame] | 1076 | int b0, b1, b2; |
Tomi Valkeinen | 3de7a1d | 2009-10-28 11:59:56 +0200 | [diff] [blame] | 1077 | |
| 1078 | if (!dss_debug) |
| 1079 | return; |
| 1080 | |
| 1081 | /* A dummy read using the SCP interface to any DSIPHY register is |
| 1082 | * required after DSIPHY reset to complete the reset of the DSI complex |
| 1083 | * I/O. */ |
Archit Taneja | a72b64b | 2011-05-12 17:26:26 +0530 | [diff] [blame] | 1084 | l = dsi_read_reg(dsidev, DSI_DSIPHY_CFG5); |
Tomi Valkeinen | 3de7a1d | 2009-10-28 11:59:56 +0200 | [diff] [blame] | 1085 | |
| 1086 | printk(KERN_DEBUG "DSI resets: "); |
| 1087 | |
Archit Taneja | a72b64b | 2011-05-12 17:26:26 +0530 | [diff] [blame] | 1088 | l = dsi_read_reg(dsidev, DSI_PLL_STATUS); |
Tomi Valkeinen | 3de7a1d | 2009-10-28 11:59:56 +0200 | [diff] [blame] | 1089 | printk("PLL (%d) ", FLD_GET(l, 0, 0)); |
| 1090 | |
Archit Taneja | a72b64b | 2011-05-12 17:26:26 +0530 | [diff] [blame] | 1091 | l = dsi_read_reg(dsidev, DSI_COMPLEXIO_CFG1); |
Tomi Valkeinen | 3de7a1d | 2009-10-28 11:59:56 +0200 | [diff] [blame] | 1092 | printk("CIO (%d) ", FLD_GET(l, 29, 29)); |
| 1093 | |
Tomi Valkeinen | c335cbf | 2010-10-07 13:27:42 +0300 | [diff] [blame] | 1094 | if (dss_has_feature(FEAT_DSI_REVERSE_TXCLKESC)) { |
| 1095 | b0 = 28; |
| 1096 | b1 = 27; |
| 1097 | b2 = 26; |
| 1098 | } else { |
| 1099 | b0 = 24; |
| 1100 | b1 = 25; |
| 1101 | b2 = 26; |
| 1102 | } |
| 1103 | |
Archit Taneja | a72b64b | 2011-05-12 17:26:26 +0530 | [diff] [blame] | 1104 | l = dsi_read_reg(dsidev, DSI_DSIPHY_CFG5); |
Tomi Valkeinen | c335cbf | 2010-10-07 13:27:42 +0300 | [diff] [blame] | 1105 | printk("PHY (%x%x%x, %d, %d, %d)\n", |
| 1106 | FLD_GET(l, b0, b0), |
| 1107 | FLD_GET(l, b1, b1), |
| 1108 | FLD_GET(l, b2, b2), |
Tomi Valkeinen | 3de7a1d | 2009-10-28 11:59:56 +0200 | [diff] [blame] | 1109 | FLD_GET(l, 29, 29), |
| 1110 | FLD_GET(l, 30, 30), |
| 1111 | FLD_GET(l, 31, 31)); |
| 1112 | } |
| 1113 | #else |
Archit Taneja | a72b64b | 2011-05-12 17:26:26 +0530 | [diff] [blame] | 1114 | #define _dsi_print_reset_status(x) |
Tomi Valkeinen | 3de7a1d | 2009-10-28 11:59:56 +0200 | [diff] [blame] | 1115 | #endif |
| 1116 | |
Archit Taneja | a72b64b | 2011-05-12 17:26:26 +0530 | [diff] [blame] | 1117 | static inline int dsi_if_enable(struct platform_device *dsidev, bool enable) |
Tomi Valkeinen | 3de7a1d | 2009-10-28 11:59:56 +0200 | [diff] [blame] | 1118 | { |
| 1119 | DSSDBG("dsi_if_enable(%d)\n", enable); |
| 1120 | |
| 1121 | enable = enable ? 1 : 0; |
Archit Taneja | a72b64b | 2011-05-12 17:26:26 +0530 | [diff] [blame] | 1122 | REG_FLD_MOD(dsidev, DSI_CTRL, enable, 0, 0); /* IF_EN */ |
Tomi Valkeinen | 3de7a1d | 2009-10-28 11:59:56 +0200 | [diff] [blame] | 1123 | |
Archit Taneja | a72b64b | 2011-05-12 17:26:26 +0530 | [diff] [blame] | 1124 | if (wait_for_bit_change(dsidev, DSI_CTRL, 0, enable) != enable) { |
Tomi Valkeinen | 3de7a1d | 2009-10-28 11:59:56 +0200 | [diff] [blame] | 1125 | DSSERR("Failed to set dsi_if_enable to %d\n", enable); |
| 1126 | return -EIO; |
| 1127 | } |
| 1128 | |
| 1129 | return 0; |
| 1130 | } |
| 1131 | |
Archit Taneja | a72b64b | 2011-05-12 17:26:26 +0530 | [diff] [blame] | 1132 | unsigned long dsi_get_pll_hsdiv_dispc_rate(struct platform_device *dsidev) |
Tomi Valkeinen | 3de7a1d | 2009-10-28 11:59:56 +0200 | [diff] [blame] | 1133 | { |
Archit Taneja | f1da39d | 2011-05-12 17:26:27 +0530 | [diff] [blame] | 1134 | struct dsi_data *dsi = dsi_get_dsidrv_data(dsidev); |
| 1135 | |
| 1136 | return dsi->current_cinfo.dsi_pll_hsdiv_dispc_clk; |
Tomi Valkeinen | 3de7a1d | 2009-10-28 11:59:56 +0200 | [diff] [blame] | 1137 | } |
| 1138 | |
Archit Taneja | a72b64b | 2011-05-12 17:26:26 +0530 | [diff] [blame] | 1139 | static unsigned long dsi_get_pll_hsdiv_dsi_rate(struct platform_device *dsidev) |
Tomi Valkeinen | 3de7a1d | 2009-10-28 11:59:56 +0200 | [diff] [blame] | 1140 | { |
Archit Taneja | f1da39d | 2011-05-12 17:26:27 +0530 | [diff] [blame] | 1141 | struct dsi_data *dsi = dsi_get_dsidrv_data(dsidev); |
| 1142 | |
| 1143 | return dsi->current_cinfo.dsi_pll_hsdiv_dsi_clk; |
Tomi Valkeinen | 3de7a1d | 2009-10-28 11:59:56 +0200 | [diff] [blame] | 1144 | } |
| 1145 | |
Archit Taneja | a72b64b | 2011-05-12 17:26:26 +0530 | [diff] [blame] | 1146 | static unsigned long dsi_get_txbyteclkhs(struct platform_device *dsidev) |
Tomi Valkeinen | 3de7a1d | 2009-10-28 11:59:56 +0200 | [diff] [blame] | 1147 | { |
Archit Taneja | f1da39d | 2011-05-12 17:26:27 +0530 | [diff] [blame] | 1148 | struct dsi_data *dsi = dsi_get_dsidrv_data(dsidev); |
| 1149 | |
| 1150 | return dsi->current_cinfo.clkin4ddr / 16; |
Tomi Valkeinen | 3de7a1d | 2009-10-28 11:59:56 +0200 | [diff] [blame] | 1151 | } |
| 1152 | |
Archit Taneja | a72b64b | 2011-05-12 17:26:26 +0530 | [diff] [blame] | 1153 | static unsigned long dsi_fclk_rate(struct platform_device *dsidev) |
Tomi Valkeinen | 3de7a1d | 2009-10-28 11:59:56 +0200 | [diff] [blame] | 1154 | { |
| 1155 | unsigned long r; |
Archit Taneja | 5a8b572 | 2011-05-12 17:26:29 +0530 | [diff] [blame] | 1156 | int dsi_module = dsi_get_dsidev_id(dsidev); |
Tomi Valkeinen | 4fbafaf | 2011-05-27 10:52:19 +0300 | [diff] [blame] | 1157 | struct dsi_data *dsi = dsi_get_dsidrv_data(dsidev); |
Tomi Valkeinen | 3de7a1d | 2009-10-28 11:59:56 +0200 | [diff] [blame] | 1158 | |
Archit Taneja | 5a8b572 | 2011-05-12 17:26:29 +0530 | [diff] [blame] | 1159 | if (dss_get_dsi_clk_source(dsi_module) == OMAP_DSS_CLK_SRC_FCK) { |
Archit Taneja | 1bb4783 | 2011-02-24 14:17:30 +0530 | [diff] [blame] | 1160 | /* DSI FCLK source is DSS_CLK_FCK */ |
Tomi Valkeinen | 4fbafaf | 2011-05-27 10:52:19 +0300 | [diff] [blame] | 1161 | r = clk_get_rate(dsi->dss_clk); |
Tomi Valkeinen | 3de7a1d | 2009-10-28 11:59:56 +0200 | [diff] [blame] | 1162 | } else { |
Archit Taneja | 1bb4783 | 2011-02-24 14:17:30 +0530 | [diff] [blame] | 1163 | /* DSI FCLK source is dsi_pll_hsdiv_dsi_clk */ |
Archit Taneja | a72b64b | 2011-05-12 17:26:26 +0530 | [diff] [blame] | 1164 | r = dsi_get_pll_hsdiv_dsi_rate(dsidev); |
Tomi Valkeinen | 3de7a1d | 2009-10-28 11:59:56 +0200 | [diff] [blame] | 1165 | } |
| 1166 | |
| 1167 | return r; |
| 1168 | } |
| 1169 | |
| 1170 | static int dsi_set_lp_clk_divisor(struct omap_dss_device *dssdev) |
| 1171 | { |
Archit Taneja | a72b64b | 2011-05-12 17:26:26 +0530 | [diff] [blame] | 1172 | struct platform_device *dsidev = dsi_get_dsidev_from_dssdev(dssdev); |
Archit Taneja | f1da39d | 2011-05-12 17:26:27 +0530 | [diff] [blame] | 1173 | struct dsi_data *dsi = dsi_get_dsidrv_data(dsidev); |
Tomi Valkeinen | 3de7a1d | 2009-10-28 11:59:56 +0200 | [diff] [blame] | 1174 | unsigned long dsi_fclk; |
| 1175 | unsigned lp_clk_div; |
| 1176 | unsigned long lp_clk; |
| 1177 | |
Tomi Valkeinen | c6940a3 | 2011-02-22 13:36:10 +0200 | [diff] [blame] | 1178 | lp_clk_div = dssdev->clocks.dsi.lp_clk_div; |
Tomi Valkeinen | 3de7a1d | 2009-10-28 11:59:56 +0200 | [diff] [blame] | 1179 | |
Archit Taneja | f1da39d | 2011-05-12 17:26:27 +0530 | [diff] [blame] | 1180 | if (lp_clk_div == 0 || lp_clk_div > dsi->lpdiv_max) |
Tomi Valkeinen | 3de7a1d | 2009-10-28 11:59:56 +0200 | [diff] [blame] | 1181 | return -EINVAL; |
| 1182 | |
Archit Taneja | a72b64b | 2011-05-12 17:26:26 +0530 | [diff] [blame] | 1183 | dsi_fclk = dsi_fclk_rate(dsidev); |
Tomi Valkeinen | 3de7a1d | 2009-10-28 11:59:56 +0200 | [diff] [blame] | 1184 | |
| 1185 | lp_clk = dsi_fclk / 2 / lp_clk_div; |
| 1186 | |
| 1187 | DSSDBG("LP_CLK_DIV %u, LP_CLK %lu\n", lp_clk_div, lp_clk); |
Archit Taneja | f1da39d | 2011-05-12 17:26:27 +0530 | [diff] [blame] | 1188 | dsi->current_cinfo.lp_clk = lp_clk; |
| 1189 | dsi->current_cinfo.lp_clk_div = lp_clk_div; |
Tomi Valkeinen | 3de7a1d | 2009-10-28 11:59:56 +0200 | [diff] [blame] | 1190 | |
Archit Taneja | a72b64b | 2011-05-12 17:26:26 +0530 | [diff] [blame] | 1191 | /* LP_CLK_DIVISOR */ |
| 1192 | REG_FLD_MOD(dsidev, DSI_CLK_CTRL, lp_clk_div, 12, 0); |
Tomi Valkeinen | 3de7a1d | 2009-10-28 11:59:56 +0200 | [diff] [blame] | 1193 | |
Archit Taneja | a72b64b | 2011-05-12 17:26:26 +0530 | [diff] [blame] | 1194 | /* LP_RX_SYNCHRO_ENABLE */ |
| 1195 | REG_FLD_MOD(dsidev, DSI_CLK_CTRL, dsi_fclk > 30000000 ? 1 : 0, 21, 21); |
Tomi Valkeinen | 3de7a1d | 2009-10-28 11:59:56 +0200 | [diff] [blame] | 1196 | |
| 1197 | return 0; |
| 1198 | } |
| 1199 | |
Archit Taneja | a72b64b | 2011-05-12 17:26:26 +0530 | [diff] [blame] | 1200 | static void dsi_enable_scp_clk(struct platform_device *dsidev) |
Tomi Valkeinen | 24c1ae4 | 2011-04-13 17:12:52 +0300 | [diff] [blame] | 1201 | { |
Archit Taneja | f1da39d | 2011-05-12 17:26:27 +0530 | [diff] [blame] | 1202 | struct dsi_data *dsi = dsi_get_dsidrv_data(dsidev); |
| 1203 | |
| 1204 | if (dsi->scp_clk_refcount++ == 0) |
Archit Taneja | a72b64b | 2011-05-12 17:26:26 +0530 | [diff] [blame] | 1205 | REG_FLD_MOD(dsidev, DSI_CLK_CTRL, 1, 14, 14); /* CIO_CLK_ICG */ |
Tomi Valkeinen | 24c1ae4 | 2011-04-13 17:12:52 +0300 | [diff] [blame] | 1206 | } |
| 1207 | |
Archit Taneja | a72b64b | 2011-05-12 17:26:26 +0530 | [diff] [blame] | 1208 | static void dsi_disable_scp_clk(struct platform_device *dsidev) |
Tomi Valkeinen | 24c1ae4 | 2011-04-13 17:12:52 +0300 | [diff] [blame] | 1209 | { |
Archit Taneja | f1da39d | 2011-05-12 17:26:27 +0530 | [diff] [blame] | 1210 | struct dsi_data *dsi = dsi_get_dsidrv_data(dsidev); |
| 1211 | |
| 1212 | WARN_ON(dsi->scp_clk_refcount == 0); |
| 1213 | if (--dsi->scp_clk_refcount == 0) |
Archit Taneja | a72b64b | 2011-05-12 17:26:26 +0530 | [diff] [blame] | 1214 | REG_FLD_MOD(dsidev, DSI_CLK_CTRL, 0, 14, 14); /* CIO_CLK_ICG */ |
Tomi Valkeinen | 24c1ae4 | 2011-04-13 17:12:52 +0300 | [diff] [blame] | 1215 | } |
Tomi Valkeinen | 3de7a1d | 2009-10-28 11:59:56 +0200 | [diff] [blame] | 1216 | |
| 1217 | enum dsi_pll_power_state { |
| 1218 | DSI_PLL_POWER_OFF = 0x0, |
| 1219 | DSI_PLL_POWER_ON_HSCLK = 0x1, |
| 1220 | DSI_PLL_POWER_ON_ALL = 0x2, |
| 1221 | DSI_PLL_POWER_ON_DIV = 0x3, |
| 1222 | }; |
| 1223 | |
Archit Taneja | a72b64b | 2011-05-12 17:26:26 +0530 | [diff] [blame] | 1224 | static int dsi_pll_power(struct platform_device *dsidev, |
| 1225 | enum dsi_pll_power_state state) |
Tomi Valkeinen | 3de7a1d | 2009-10-28 11:59:56 +0200 | [diff] [blame] | 1226 | { |
| 1227 | int t = 0; |
| 1228 | |
Tomi Valkeinen | c94dfe0 | 2011-04-15 10:42:59 +0300 | [diff] [blame] | 1229 | /* DSI-PLL power command 0x3 is not working */ |
| 1230 | if (dss_has_feature(FEAT_DSI_PLL_PWR_BUG) && |
| 1231 | state == DSI_PLL_POWER_ON_DIV) |
| 1232 | state = DSI_PLL_POWER_ON_ALL; |
| 1233 | |
Archit Taneja | a72b64b | 2011-05-12 17:26:26 +0530 | [diff] [blame] | 1234 | /* PLL_PWR_CMD */ |
| 1235 | REG_FLD_MOD(dsidev, DSI_CLK_CTRL, state, 31, 30); |
Tomi Valkeinen | 3de7a1d | 2009-10-28 11:59:56 +0200 | [diff] [blame] | 1236 | |
| 1237 | /* PLL_PWR_STATUS */ |
Archit Taneja | a72b64b | 2011-05-12 17:26:26 +0530 | [diff] [blame] | 1238 | while (FLD_GET(dsi_read_reg(dsidev, DSI_CLK_CTRL), 29, 28) != state) { |
Tomi Valkeinen | 24be78b | 2010-01-07 14:19:48 +0200 | [diff] [blame] | 1239 | if (++t > 1000) { |
Tomi Valkeinen | 3de7a1d | 2009-10-28 11:59:56 +0200 | [diff] [blame] | 1240 | DSSERR("Failed to set DSI PLL power mode to %d\n", |
| 1241 | state); |
| 1242 | return -ENODEV; |
| 1243 | } |
Tomi Valkeinen | 24be78b | 2010-01-07 14:19:48 +0200 | [diff] [blame] | 1244 | udelay(1); |
Tomi Valkeinen | 3de7a1d | 2009-10-28 11:59:56 +0200 | [diff] [blame] | 1245 | } |
| 1246 | |
| 1247 | return 0; |
| 1248 | } |
| 1249 | |
| 1250 | /* calculate clock rates using dividers in cinfo */ |
Sumit Semwal | ff1b2cd | 2010-12-02 11:27:11 +0000 | [diff] [blame] | 1251 | static int dsi_calc_clock_rates(struct omap_dss_device *dssdev, |
| 1252 | struct dsi_clock_info *cinfo) |
Tomi Valkeinen | 3de7a1d | 2009-10-28 11:59:56 +0200 | [diff] [blame] | 1253 | { |
Archit Taneja | f1da39d | 2011-05-12 17:26:27 +0530 | [diff] [blame] | 1254 | struct platform_device *dsidev = dsi_get_dsidev_from_dssdev(dssdev); |
| 1255 | struct dsi_data *dsi = dsi_get_dsidrv_data(dsidev); |
| 1256 | |
| 1257 | if (cinfo->regn == 0 || cinfo->regn > dsi->regn_max) |
Tomi Valkeinen | 3de7a1d | 2009-10-28 11:59:56 +0200 | [diff] [blame] | 1258 | return -EINVAL; |
| 1259 | |
Archit Taneja | f1da39d | 2011-05-12 17:26:27 +0530 | [diff] [blame] | 1260 | if (cinfo->regm == 0 || cinfo->regm > dsi->regm_max) |
Tomi Valkeinen | 3de7a1d | 2009-10-28 11:59:56 +0200 | [diff] [blame] | 1261 | return -EINVAL; |
| 1262 | |
Archit Taneja | f1da39d | 2011-05-12 17:26:27 +0530 | [diff] [blame] | 1263 | if (cinfo->regm_dispc > dsi->regm_dispc_max) |
Tomi Valkeinen | 3de7a1d | 2009-10-28 11:59:56 +0200 | [diff] [blame] | 1264 | return -EINVAL; |
| 1265 | |
Archit Taneja | f1da39d | 2011-05-12 17:26:27 +0530 | [diff] [blame] | 1266 | if (cinfo->regm_dsi > dsi->regm_dsi_max) |
Tomi Valkeinen | 3de7a1d | 2009-10-28 11:59:56 +0200 | [diff] [blame] | 1267 | return -EINVAL; |
| 1268 | |
Archit Taneja | 1bb4783 | 2011-02-24 14:17:30 +0530 | [diff] [blame] | 1269 | if (cinfo->use_sys_clk) { |
Tomi Valkeinen | 4fbafaf | 2011-05-27 10:52:19 +0300 | [diff] [blame] | 1270 | cinfo->clkin = clk_get_rate(dsi->sys_clk); |
Tomi Valkeinen | 3de7a1d | 2009-10-28 11:59:56 +0200 | [diff] [blame] | 1271 | /* XXX it is unclear if highfreq should be used |
Archit Taneja | 1bb4783 | 2011-02-24 14:17:30 +0530 | [diff] [blame] | 1272 | * with DSS_SYS_CLK source also */ |
Tomi Valkeinen | 3de7a1d | 2009-10-28 11:59:56 +0200 | [diff] [blame] | 1273 | cinfo->highfreq = 0; |
| 1274 | } else { |
Tomi Valkeinen | 26d9dd0 | 2011-08-16 13:45:15 +0300 | [diff] [blame] | 1275 | cinfo->clkin = dispc_mgr_pclk_rate(dssdev->manager->id); |
Tomi Valkeinen | 3de7a1d | 2009-10-28 11:59:56 +0200 | [diff] [blame] | 1276 | |
| 1277 | if (cinfo->clkin < 32000000) |
| 1278 | cinfo->highfreq = 0; |
| 1279 | else |
| 1280 | cinfo->highfreq = 1; |
| 1281 | } |
| 1282 | |
| 1283 | cinfo->fint = cinfo->clkin / (cinfo->regn * (cinfo->highfreq ? 2 : 1)); |
| 1284 | |
Archit Taneja | f1da39d | 2011-05-12 17:26:27 +0530 | [diff] [blame] | 1285 | if (cinfo->fint > dsi->fint_max || cinfo->fint < dsi->fint_min) |
Tomi Valkeinen | 3de7a1d | 2009-10-28 11:59:56 +0200 | [diff] [blame] | 1286 | return -EINVAL; |
| 1287 | |
| 1288 | cinfo->clkin4ddr = 2 * cinfo->regm * cinfo->fint; |
| 1289 | |
| 1290 | if (cinfo->clkin4ddr > 1800 * 1000 * 1000) |
| 1291 | return -EINVAL; |
| 1292 | |
Archit Taneja | 1bb4783 | 2011-02-24 14:17:30 +0530 | [diff] [blame] | 1293 | if (cinfo->regm_dispc > 0) |
| 1294 | cinfo->dsi_pll_hsdiv_dispc_clk = |
| 1295 | cinfo->clkin4ddr / cinfo->regm_dispc; |
Tomi Valkeinen | 3de7a1d | 2009-10-28 11:59:56 +0200 | [diff] [blame] | 1296 | else |
Archit Taneja | 1bb4783 | 2011-02-24 14:17:30 +0530 | [diff] [blame] | 1297 | cinfo->dsi_pll_hsdiv_dispc_clk = 0; |
Tomi Valkeinen | 3de7a1d | 2009-10-28 11:59:56 +0200 | [diff] [blame] | 1298 | |
Archit Taneja | 1bb4783 | 2011-02-24 14:17:30 +0530 | [diff] [blame] | 1299 | if (cinfo->regm_dsi > 0) |
| 1300 | cinfo->dsi_pll_hsdiv_dsi_clk = |
| 1301 | cinfo->clkin4ddr / cinfo->regm_dsi; |
Tomi Valkeinen | 3de7a1d | 2009-10-28 11:59:56 +0200 | [diff] [blame] | 1302 | else |
Archit Taneja | 1bb4783 | 2011-02-24 14:17:30 +0530 | [diff] [blame] | 1303 | cinfo->dsi_pll_hsdiv_dsi_clk = 0; |
Tomi Valkeinen | 3de7a1d | 2009-10-28 11:59:56 +0200 | [diff] [blame] | 1304 | |
| 1305 | return 0; |
| 1306 | } |
| 1307 | |
Archit Taneja | a72b64b | 2011-05-12 17:26:26 +0530 | [diff] [blame] | 1308 | int dsi_pll_calc_clock_div_pck(struct platform_device *dsidev, bool is_tft, |
| 1309 | unsigned long req_pck, struct dsi_clock_info *dsi_cinfo, |
Tomi Valkeinen | 3de7a1d | 2009-10-28 11:59:56 +0200 | [diff] [blame] | 1310 | struct dispc_clock_info *dispc_cinfo) |
| 1311 | { |
Archit Taneja | f1da39d | 2011-05-12 17:26:27 +0530 | [diff] [blame] | 1312 | struct dsi_data *dsi = dsi_get_dsidrv_data(dsidev); |
Tomi Valkeinen | 3de7a1d | 2009-10-28 11:59:56 +0200 | [diff] [blame] | 1313 | struct dsi_clock_info cur, best; |
| 1314 | struct dispc_clock_info best_dispc; |
| 1315 | int min_fck_per_pck; |
| 1316 | int match = 0; |
Archit Taneja | 1bb4783 | 2011-02-24 14:17:30 +0530 | [diff] [blame] | 1317 | unsigned long dss_sys_clk, max_dss_fck; |
Tomi Valkeinen | 3de7a1d | 2009-10-28 11:59:56 +0200 | [diff] [blame] | 1318 | |
Tomi Valkeinen | 4fbafaf | 2011-05-27 10:52:19 +0300 | [diff] [blame] | 1319 | dss_sys_clk = clk_get_rate(dsi->sys_clk); |
Tomi Valkeinen | 3de7a1d | 2009-10-28 11:59:56 +0200 | [diff] [blame] | 1320 | |
Taneja, Archit | 31ef823 | 2011-03-14 23:28:22 -0500 | [diff] [blame] | 1321 | max_dss_fck = dss_feat_get_param_max(FEAT_PARAM_DSS_FCK); |
Archit Taneja | 819d807 | 2011-03-01 11:54:00 +0530 | [diff] [blame] | 1322 | |
Archit Taneja | f1da39d | 2011-05-12 17:26:27 +0530 | [diff] [blame] | 1323 | if (req_pck == dsi->cache_req_pck && |
| 1324 | dsi->cache_cinfo.clkin == dss_sys_clk) { |
Tomi Valkeinen | 3de7a1d | 2009-10-28 11:59:56 +0200 | [diff] [blame] | 1325 | DSSDBG("DSI clock info found from cache\n"); |
Archit Taneja | f1da39d | 2011-05-12 17:26:27 +0530 | [diff] [blame] | 1326 | *dsi_cinfo = dsi->cache_cinfo; |
Archit Taneja | 1bb4783 | 2011-02-24 14:17:30 +0530 | [diff] [blame] | 1327 | dispc_find_clk_divs(is_tft, req_pck, |
| 1328 | dsi_cinfo->dsi_pll_hsdiv_dispc_clk, dispc_cinfo); |
Tomi Valkeinen | 3de7a1d | 2009-10-28 11:59:56 +0200 | [diff] [blame] | 1329 | return 0; |
| 1330 | } |
| 1331 | |
| 1332 | min_fck_per_pck = CONFIG_OMAP2_DSS_MIN_FCK_PER_PCK; |
| 1333 | |
| 1334 | if (min_fck_per_pck && |
Archit Taneja | 819d807 | 2011-03-01 11:54:00 +0530 | [diff] [blame] | 1335 | req_pck * min_fck_per_pck > max_dss_fck) { |
Tomi Valkeinen | 3de7a1d | 2009-10-28 11:59:56 +0200 | [diff] [blame] | 1336 | DSSERR("Requested pixel clock not possible with the current " |
| 1337 | "OMAP2_DSS_MIN_FCK_PER_PCK setting. Turning " |
| 1338 | "the constraint off.\n"); |
| 1339 | min_fck_per_pck = 0; |
| 1340 | } |
| 1341 | |
| 1342 | DSSDBG("dsi_pll_calc\n"); |
| 1343 | |
| 1344 | retry: |
| 1345 | memset(&best, 0, sizeof(best)); |
| 1346 | memset(&best_dispc, 0, sizeof(best_dispc)); |
| 1347 | |
| 1348 | memset(&cur, 0, sizeof(cur)); |
Archit Taneja | 1bb4783 | 2011-02-24 14:17:30 +0530 | [diff] [blame] | 1349 | cur.clkin = dss_sys_clk; |
| 1350 | cur.use_sys_clk = 1; |
Tomi Valkeinen | 3de7a1d | 2009-10-28 11:59:56 +0200 | [diff] [blame] | 1351 | cur.highfreq = 0; |
| 1352 | |
| 1353 | /* no highfreq: 0.75MHz < Fint = clkin / regn < 2.1MHz */ |
| 1354 | /* highfreq: 0.75MHz < Fint = clkin / (2*regn) < 2.1MHz */ |
| 1355 | /* To reduce PLL lock time, keep Fint high (around 2 MHz) */ |
Archit Taneja | f1da39d | 2011-05-12 17:26:27 +0530 | [diff] [blame] | 1356 | for (cur.regn = 1; cur.regn < dsi->regn_max; ++cur.regn) { |
Tomi Valkeinen | 3de7a1d | 2009-10-28 11:59:56 +0200 | [diff] [blame] | 1357 | if (cur.highfreq == 0) |
| 1358 | cur.fint = cur.clkin / cur.regn; |
| 1359 | else |
| 1360 | cur.fint = cur.clkin / (2 * cur.regn); |
| 1361 | |
Archit Taneja | f1da39d | 2011-05-12 17:26:27 +0530 | [diff] [blame] | 1362 | if (cur.fint > dsi->fint_max || cur.fint < dsi->fint_min) |
Tomi Valkeinen | 3de7a1d | 2009-10-28 11:59:56 +0200 | [diff] [blame] | 1363 | continue; |
| 1364 | |
| 1365 | /* DSIPHY(MHz) = (2 * regm / regn) * (clkin / (highfreq + 1)) */ |
Archit Taneja | f1da39d | 2011-05-12 17:26:27 +0530 | [diff] [blame] | 1366 | for (cur.regm = 1; cur.regm < dsi->regm_max; ++cur.regm) { |
Tomi Valkeinen | 3de7a1d | 2009-10-28 11:59:56 +0200 | [diff] [blame] | 1367 | unsigned long a, b; |
| 1368 | |
| 1369 | a = 2 * cur.regm * (cur.clkin/1000); |
| 1370 | b = cur.regn * (cur.highfreq + 1); |
| 1371 | cur.clkin4ddr = a / b * 1000; |
| 1372 | |
| 1373 | if (cur.clkin4ddr > 1800 * 1000 * 1000) |
| 1374 | break; |
| 1375 | |
Archit Taneja | 1bb4783 | 2011-02-24 14:17:30 +0530 | [diff] [blame] | 1376 | /* dsi_pll_hsdiv_dispc_clk(MHz) = |
| 1377 | * DSIPHY(MHz) / regm_dispc < 173MHz/186Mhz */ |
Archit Taneja | f1da39d | 2011-05-12 17:26:27 +0530 | [diff] [blame] | 1378 | for (cur.regm_dispc = 1; cur.regm_dispc < |
| 1379 | dsi->regm_dispc_max; ++cur.regm_dispc) { |
Tomi Valkeinen | 3de7a1d | 2009-10-28 11:59:56 +0200 | [diff] [blame] | 1380 | struct dispc_clock_info cur_dispc; |
Archit Taneja | 1bb4783 | 2011-02-24 14:17:30 +0530 | [diff] [blame] | 1381 | cur.dsi_pll_hsdiv_dispc_clk = |
| 1382 | cur.clkin4ddr / cur.regm_dispc; |
Tomi Valkeinen | 3de7a1d | 2009-10-28 11:59:56 +0200 | [diff] [blame] | 1383 | |
| 1384 | /* this will narrow down the search a bit, |
| 1385 | * but still give pixclocks below what was |
| 1386 | * requested */ |
Archit Taneja | 1bb4783 | 2011-02-24 14:17:30 +0530 | [diff] [blame] | 1387 | if (cur.dsi_pll_hsdiv_dispc_clk < req_pck) |
Tomi Valkeinen | 3de7a1d | 2009-10-28 11:59:56 +0200 | [diff] [blame] | 1388 | break; |
| 1389 | |
Archit Taneja | 1bb4783 | 2011-02-24 14:17:30 +0530 | [diff] [blame] | 1390 | if (cur.dsi_pll_hsdiv_dispc_clk > max_dss_fck) |
Tomi Valkeinen | 3de7a1d | 2009-10-28 11:59:56 +0200 | [diff] [blame] | 1391 | continue; |
| 1392 | |
| 1393 | if (min_fck_per_pck && |
Archit Taneja | 1bb4783 | 2011-02-24 14:17:30 +0530 | [diff] [blame] | 1394 | cur.dsi_pll_hsdiv_dispc_clk < |
Tomi Valkeinen | 3de7a1d | 2009-10-28 11:59:56 +0200 | [diff] [blame] | 1395 | req_pck * min_fck_per_pck) |
| 1396 | continue; |
| 1397 | |
| 1398 | match = 1; |
| 1399 | |
| 1400 | dispc_find_clk_divs(is_tft, req_pck, |
Archit Taneja | 1bb4783 | 2011-02-24 14:17:30 +0530 | [diff] [blame] | 1401 | cur.dsi_pll_hsdiv_dispc_clk, |
Tomi Valkeinen | 3de7a1d | 2009-10-28 11:59:56 +0200 | [diff] [blame] | 1402 | &cur_dispc); |
| 1403 | |
| 1404 | if (abs(cur_dispc.pck - req_pck) < |
| 1405 | abs(best_dispc.pck - req_pck)) { |
| 1406 | best = cur; |
| 1407 | best_dispc = cur_dispc; |
| 1408 | |
| 1409 | if (cur_dispc.pck == req_pck) |
| 1410 | goto found; |
| 1411 | } |
| 1412 | } |
| 1413 | } |
| 1414 | } |
| 1415 | found: |
| 1416 | if (!match) { |
| 1417 | if (min_fck_per_pck) { |
| 1418 | DSSERR("Could not find suitable clock settings.\n" |
| 1419 | "Turning FCK/PCK constraint off and" |
| 1420 | "trying again.\n"); |
| 1421 | min_fck_per_pck = 0; |
| 1422 | goto retry; |
| 1423 | } |
| 1424 | |
| 1425 | DSSERR("Could not find suitable clock settings.\n"); |
| 1426 | |
| 1427 | return -EINVAL; |
| 1428 | } |
| 1429 | |
Archit Taneja | 1bb4783 | 2011-02-24 14:17:30 +0530 | [diff] [blame] | 1430 | /* dsi_pll_hsdiv_dsi_clk (regm_dsi) is not used */ |
| 1431 | best.regm_dsi = 0; |
| 1432 | best.dsi_pll_hsdiv_dsi_clk = 0; |
Tomi Valkeinen | 3de7a1d | 2009-10-28 11:59:56 +0200 | [diff] [blame] | 1433 | |
| 1434 | if (dsi_cinfo) |
| 1435 | *dsi_cinfo = best; |
| 1436 | if (dispc_cinfo) |
| 1437 | *dispc_cinfo = best_dispc; |
| 1438 | |
Archit Taneja | f1da39d | 2011-05-12 17:26:27 +0530 | [diff] [blame] | 1439 | dsi->cache_req_pck = req_pck; |
| 1440 | dsi->cache_clk_freq = 0; |
| 1441 | dsi->cache_cinfo = best; |
Tomi Valkeinen | 3de7a1d | 2009-10-28 11:59:56 +0200 | [diff] [blame] | 1442 | |
| 1443 | return 0; |
| 1444 | } |
| 1445 | |
Archit Taneja | a72b64b | 2011-05-12 17:26:26 +0530 | [diff] [blame] | 1446 | int dsi_pll_set_clock_div(struct platform_device *dsidev, |
| 1447 | struct dsi_clock_info *cinfo) |
Tomi Valkeinen | 3de7a1d | 2009-10-28 11:59:56 +0200 | [diff] [blame] | 1448 | { |
Archit Taneja | f1da39d | 2011-05-12 17:26:27 +0530 | [diff] [blame] | 1449 | struct dsi_data *dsi = dsi_get_dsidrv_data(dsidev); |
Tomi Valkeinen | 3de7a1d | 2009-10-28 11:59:56 +0200 | [diff] [blame] | 1450 | int r = 0; |
| 1451 | u32 l; |
Archit Taneja | 9613c02 | 2011-03-22 06:33:36 -0500 | [diff] [blame] | 1452 | int f = 0; |
Taneja, Archit | 4964111 | 2011-03-14 23:28:23 -0500 | [diff] [blame] | 1453 | u8 regn_start, regn_end, regm_start, regm_end; |
| 1454 | u8 regm_dispc_start, regm_dispc_end, regm_dsi_start, regm_dsi_end; |
Tomi Valkeinen | 3de7a1d | 2009-10-28 11:59:56 +0200 | [diff] [blame] | 1455 | |
| 1456 | DSSDBGF(); |
| 1457 | |
Archit Taneja | f1da39d | 2011-05-12 17:26:27 +0530 | [diff] [blame] | 1458 | dsi->current_cinfo.use_sys_clk = cinfo->use_sys_clk; |
| 1459 | dsi->current_cinfo.highfreq = cinfo->highfreq; |
Tomi Valkeinen | b276509 | 2011-04-07 15:28:47 +0300 | [diff] [blame] | 1460 | |
Archit Taneja | f1da39d | 2011-05-12 17:26:27 +0530 | [diff] [blame] | 1461 | dsi->current_cinfo.fint = cinfo->fint; |
| 1462 | dsi->current_cinfo.clkin4ddr = cinfo->clkin4ddr; |
| 1463 | dsi->current_cinfo.dsi_pll_hsdiv_dispc_clk = |
Archit Taneja | 1bb4783 | 2011-02-24 14:17:30 +0530 | [diff] [blame] | 1464 | cinfo->dsi_pll_hsdiv_dispc_clk; |
Archit Taneja | f1da39d | 2011-05-12 17:26:27 +0530 | [diff] [blame] | 1465 | dsi->current_cinfo.dsi_pll_hsdiv_dsi_clk = |
Archit Taneja | 1bb4783 | 2011-02-24 14:17:30 +0530 | [diff] [blame] | 1466 | cinfo->dsi_pll_hsdiv_dsi_clk; |
Tomi Valkeinen | 3de7a1d | 2009-10-28 11:59:56 +0200 | [diff] [blame] | 1467 | |
Archit Taneja | f1da39d | 2011-05-12 17:26:27 +0530 | [diff] [blame] | 1468 | dsi->current_cinfo.regn = cinfo->regn; |
| 1469 | dsi->current_cinfo.regm = cinfo->regm; |
| 1470 | dsi->current_cinfo.regm_dispc = cinfo->regm_dispc; |
| 1471 | dsi->current_cinfo.regm_dsi = cinfo->regm_dsi; |
Tomi Valkeinen | 3de7a1d | 2009-10-28 11:59:56 +0200 | [diff] [blame] | 1472 | |
| 1473 | DSSDBG("DSI Fint %ld\n", cinfo->fint); |
| 1474 | |
| 1475 | DSSDBG("clkin (%s) rate %ld, highfreq %d\n", |
Archit Taneja | 1bb4783 | 2011-02-24 14:17:30 +0530 | [diff] [blame] | 1476 | cinfo->use_sys_clk ? "dss_sys_clk" : "pclkfree", |
Tomi Valkeinen | 3de7a1d | 2009-10-28 11:59:56 +0200 | [diff] [blame] | 1477 | cinfo->clkin, |
| 1478 | cinfo->highfreq); |
| 1479 | |
| 1480 | /* DSIPHY == CLKIN4DDR */ |
| 1481 | DSSDBG("CLKIN4DDR = 2 * %d / %d * %lu / %d = %lu\n", |
| 1482 | cinfo->regm, |
| 1483 | cinfo->regn, |
| 1484 | cinfo->clkin, |
| 1485 | cinfo->highfreq + 1, |
| 1486 | cinfo->clkin4ddr); |
| 1487 | |
| 1488 | DSSDBG("Data rate on 1 DSI lane %ld Mbps\n", |
| 1489 | cinfo->clkin4ddr / 1000 / 1000 / 2); |
| 1490 | |
| 1491 | DSSDBG("Clock lane freq %ld Hz\n", cinfo->clkin4ddr / 4); |
| 1492 | |
Archit Taneja | 1bb4783 | 2011-02-24 14:17:30 +0530 | [diff] [blame] | 1493 | DSSDBG("regm_dispc = %d, %s (%s) = %lu\n", cinfo->regm_dispc, |
Archit Taneja | 89a35e5 | 2011-04-12 13:52:23 +0530 | [diff] [blame] | 1494 | dss_get_generic_clk_source_name(OMAP_DSS_CLK_SRC_DSI_PLL_HSDIV_DISPC), |
| 1495 | dss_feat_get_clk_source_name(OMAP_DSS_CLK_SRC_DSI_PLL_HSDIV_DISPC), |
Archit Taneja | 1bb4783 | 2011-02-24 14:17:30 +0530 | [diff] [blame] | 1496 | cinfo->dsi_pll_hsdiv_dispc_clk); |
| 1497 | DSSDBG("regm_dsi = %d, %s (%s) = %lu\n", cinfo->regm_dsi, |
Archit Taneja | 89a35e5 | 2011-04-12 13:52:23 +0530 | [diff] [blame] | 1498 | dss_get_generic_clk_source_name(OMAP_DSS_CLK_SRC_DSI_PLL_HSDIV_DSI), |
| 1499 | dss_feat_get_clk_source_name(OMAP_DSS_CLK_SRC_DSI_PLL_HSDIV_DSI), |
Archit Taneja | 1bb4783 | 2011-02-24 14:17:30 +0530 | [diff] [blame] | 1500 | cinfo->dsi_pll_hsdiv_dsi_clk); |
Tomi Valkeinen | 3de7a1d | 2009-10-28 11:59:56 +0200 | [diff] [blame] | 1501 | |
Taneja, Archit | 4964111 | 2011-03-14 23:28:23 -0500 | [diff] [blame] | 1502 | dss_feat_get_reg_field(FEAT_REG_DSIPLL_REGN, ®n_start, ®n_end); |
| 1503 | dss_feat_get_reg_field(FEAT_REG_DSIPLL_REGM, ®m_start, ®m_end); |
| 1504 | dss_feat_get_reg_field(FEAT_REG_DSIPLL_REGM_DISPC, ®m_dispc_start, |
| 1505 | ®m_dispc_end); |
| 1506 | dss_feat_get_reg_field(FEAT_REG_DSIPLL_REGM_DSI, ®m_dsi_start, |
| 1507 | ®m_dsi_end); |
| 1508 | |
Archit Taneja | a72b64b | 2011-05-12 17:26:26 +0530 | [diff] [blame] | 1509 | /* DSI_PLL_AUTOMODE = manual */ |
| 1510 | REG_FLD_MOD(dsidev, DSI_PLL_CONTROL, 0, 0, 0); |
Tomi Valkeinen | 3de7a1d | 2009-10-28 11:59:56 +0200 | [diff] [blame] | 1511 | |
Archit Taneja | a72b64b | 2011-05-12 17:26:26 +0530 | [diff] [blame] | 1512 | l = dsi_read_reg(dsidev, DSI_PLL_CONFIGURATION1); |
Tomi Valkeinen | 3de7a1d | 2009-10-28 11:59:56 +0200 | [diff] [blame] | 1513 | l = FLD_MOD(l, 1, 0, 0); /* DSI_PLL_STOPMODE */ |
Taneja, Archit | 4964111 | 2011-03-14 23:28:23 -0500 | [diff] [blame] | 1514 | /* DSI_PLL_REGN */ |
| 1515 | l = FLD_MOD(l, cinfo->regn - 1, regn_start, regn_end); |
| 1516 | /* DSI_PLL_REGM */ |
| 1517 | l = FLD_MOD(l, cinfo->regm, regm_start, regm_end); |
| 1518 | /* DSI_CLOCK_DIV */ |
Archit Taneja | 1bb4783 | 2011-02-24 14:17:30 +0530 | [diff] [blame] | 1519 | l = FLD_MOD(l, cinfo->regm_dispc > 0 ? cinfo->regm_dispc - 1 : 0, |
Taneja, Archit | 4964111 | 2011-03-14 23:28:23 -0500 | [diff] [blame] | 1520 | regm_dispc_start, regm_dispc_end); |
| 1521 | /* DSIPROTO_CLOCK_DIV */ |
Archit Taneja | 1bb4783 | 2011-02-24 14:17:30 +0530 | [diff] [blame] | 1522 | l = FLD_MOD(l, cinfo->regm_dsi > 0 ? cinfo->regm_dsi - 1 : 0, |
Taneja, Archit | 4964111 | 2011-03-14 23:28:23 -0500 | [diff] [blame] | 1523 | regm_dsi_start, regm_dsi_end); |
Archit Taneja | a72b64b | 2011-05-12 17:26:26 +0530 | [diff] [blame] | 1524 | dsi_write_reg(dsidev, DSI_PLL_CONFIGURATION1, l); |
Tomi Valkeinen | 3de7a1d | 2009-10-28 11:59:56 +0200 | [diff] [blame] | 1525 | |
Archit Taneja | f1da39d | 2011-05-12 17:26:27 +0530 | [diff] [blame] | 1526 | BUG_ON(cinfo->fint < dsi->fint_min || cinfo->fint > dsi->fint_max); |
Archit Taneja | 9613c02 | 2011-03-22 06:33:36 -0500 | [diff] [blame] | 1527 | |
| 1528 | if (dss_has_feature(FEAT_DSI_PLL_FREQSEL)) { |
| 1529 | f = cinfo->fint < 1000000 ? 0x3 : |
| 1530 | cinfo->fint < 1250000 ? 0x4 : |
| 1531 | cinfo->fint < 1500000 ? 0x5 : |
| 1532 | cinfo->fint < 1750000 ? 0x6 : |
| 1533 | 0x7; |
| 1534 | } |
Tomi Valkeinen | 3de7a1d | 2009-10-28 11:59:56 +0200 | [diff] [blame] | 1535 | |
Archit Taneja | a72b64b | 2011-05-12 17:26:26 +0530 | [diff] [blame] | 1536 | l = dsi_read_reg(dsidev, DSI_PLL_CONFIGURATION2); |
Archit Taneja | 9613c02 | 2011-03-22 06:33:36 -0500 | [diff] [blame] | 1537 | |
| 1538 | if (dss_has_feature(FEAT_DSI_PLL_FREQSEL)) |
| 1539 | l = FLD_MOD(l, f, 4, 1); /* DSI_PLL_FREQSEL */ |
Archit Taneja | 1bb4783 | 2011-02-24 14:17:30 +0530 | [diff] [blame] | 1540 | l = FLD_MOD(l, cinfo->use_sys_clk ? 0 : 1, |
Tomi Valkeinen | 3de7a1d | 2009-10-28 11:59:56 +0200 | [diff] [blame] | 1541 | 11, 11); /* DSI_PLL_CLKSEL */ |
| 1542 | l = FLD_MOD(l, cinfo->highfreq, |
| 1543 | 12, 12); /* DSI_PLL_HIGHFREQ */ |
| 1544 | l = FLD_MOD(l, 1, 13, 13); /* DSI_PLL_REFEN */ |
| 1545 | l = FLD_MOD(l, 0, 14, 14); /* DSIPHY_CLKINEN */ |
| 1546 | l = FLD_MOD(l, 1, 20, 20); /* DSI_HSDIVBYPASS */ |
Archit Taneja | a72b64b | 2011-05-12 17:26:26 +0530 | [diff] [blame] | 1547 | dsi_write_reg(dsidev, DSI_PLL_CONFIGURATION2, l); |
Tomi Valkeinen | 3de7a1d | 2009-10-28 11:59:56 +0200 | [diff] [blame] | 1548 | |
Archit Taneja | a72b64b | 2011-05-12 17:26:26 +0530 | [diff] [blame] | 1549 | REG_FLD_MOD(dsidev, DSI_PLL_GO, 1, 0, 0); /* DSI_PLL_GO */ |
Tomi Valkeinen | 3de7a1d | 2009-10-28 11:59:56 +0200 | [diff] [blame] | 1550 | |
Archit Taneja | a72b64b | 2011-05-12 17:26:26 +0530 | [diff] [blame] | 1551 | if (wait_for_bit_change(dsidev, DSI_PLL_GO, 0, 0) != 0) { |
Tomi Valkeinen | 3de7a1d | 2009-10-28 11:59:56 +0200 | [diff] [blame] | 1552 | DSSERR("dsi pll go bit not going down.\n"); |
| 1553 | r = -EIO; |
| 1554 | goto err; |
| 1555 | } |
| 1556 | |
Archit Taneja | a72b64b | 2011-05-12 17:26:26 +0530 | [diff] [blame] | 1557 | if (wait_for_bit_change(dsidev, DSI_PLL_STATUS, 1, 1) != 1) { |
Tomi Valkeinen | 3de7a1d | 2009-10-28 11:59:56 +0200 | [diff] [blame] | 1558 | DSSERR("cannot lock PLL\n"); |
| 1559 | r = -EIO; |
| 1560 | goto err; |
| 1561 | } |
| 1562 | |
Archit Taneja | f1da39d | 2011-05-12 17:26:27 +0530 | [diff] [blame] | 1563 | dsi->pll_locked = 1; |
Tomi Valkeinen | 3de7a1d | 2009-10-28 11:59:56 +0200 | [diff] [blame] | 1564 | |
Archit Taneja | a72b64b | 2011-05-12 17:26:26 +0530 | [diff] [blame] | 1565 | l = dsi_read_reg(dsidev, DSI_PLL_CONFIGURATION2); |
Tomi Valkeinen | 3de7a1d | 2009-10-28 11:59:56 +0200 | [diff] [blame] | 1566 | l = FLD_MOD(l, 0, 0, 0); /* DSI_PLL_IDLE */ |
| 1567 | l = FLD_MOD(l, 0, 5, 5); /* DSI_PLL_PLLLPMODE */ |
| 1568 | l = FLD_MOD(l, 0, 6, 6); /* DSI_PLL_LOWCURRSTBY */ |
| 1569 | l = FLD_MOD(l, 0, 7, 7); /* DSI_PLL_TIGHTPHASELOCK */ |
| 1570 | l = FLD_MOD(l, 0, 8, 8); /* DSI_PLL_DRIFTGUARDEN */ |
| 1571 | l = FLD_MOD(l, 0, 10, 9); /* DSI_PLL_LOCKSEL */ |
| 1572 | l = FLD_MOD(l, 1, 13, 13); /* DSI_PLL_REFEN */ |
| 1573 | l = FLD_MOD(l, 1, 14, 14); /* DSIPHY_CLKINEN */ |
| 1574 | l = FLD_MOD(l, 0, 15, 15); /* DSI_BYPASSEN */ |
| 1575 | l = FLD_MOD(l, 1, 16, 16); /* DSS_CLOCK_EN */ |
| 1576 | l = FLD_MOD(l, 0, 17, 17); /* DSS_CLOCK_PWDN */ |
| 1577 | l = FLD_MOD(l, 1, 18, 18); /* DSI_PROTO_CLOCK_EN */ |
| 1578 | l = FLD_MOD(l, 0, 19, 19); /* DSI_PROTO_CLOCK_PWDN */ |
| 1579 | l = FLD_MOD(l, 0, 20, 20); /* DSI_HSDIVBYPASS */ |
Archit Taneja | a72b64b | 2011-05-12 17:26:26 +0530 | [diff] [blame] | 1580 | dsi_write_reg(dsidev, DSI_PLL_CONFIGURATION2, l); |
Tomi Valkeinen | 3de7a1d | 2009-10-28 11:59:56 +0200 | [diff] [blame] | 1581 | |
| 1582 | DSSDBG("PLL config done\n"); |
| 1583 | err: |
| 1584 | return r; |
| 1585 | } |
| 1586 | |
Archit Taneja | a72b64b | 2011-05-12 17:26:26 +0530 | [diff] [blame] | 1587 | int dsi_pll_init(struct platform_device *dsidev, bool enable_hsclk, |
| 1588 | bool enable_hsdiv) |
Tomi Valkeinen | 3de7a1d | 2009-10-28 11:59:56 +0200 | [diff] [blame] | 1589 | { |
Archit Taneja | f1da39d | 2011-05-12 17:26:27 +0530 | [diff] [blame] | 1590 | struct dsi_data *dsi = dsi_get_dsidrv_data(dsidev); |
Tomi Valkeinen | 3de7a1d | 2009-10-28 11:59:56 +0200 | [diff] [blame] | 1591 | int r = 0; |
| 1592 | enum dsi_pll_power_state pwstate; |
| 1593 | |
| 1594 | DSSDBG("PLL init\n"); |
| 1595 | |
Archit Taneja | f1da39d | 2011-05-12 17:26:27 +0530 | [diff] [blame] | 1596 | if (dsi->vdds_dsi_reg == NULL) { |
Tomi Valkeinen | f2988ab | 2011-03-02 10:06:48 +0200 | [diff] [blame] | 1597 | struct regulator *vdds_dsi; |
| 1598 | |
Archit Taneja | f1da39d | 2011-05-12 17:26:27 +0530 | [diff] [blame] | 1599 | vdds_dsi = regulator_get(&dsi->pdev->dev, "vdds_dsi"); |
Tomi Valkeinen | f2988ab | 2011-03-02 10:06:48 +0200 | [diff] [blame] | 1600 | |
| 1601 | if (IS_ERR(vdds_dsi)) { |
| 1602 | DSSERR("can't get VDDS_DSI regulator\n"); |
| 1603 | return PTR_ERR(vdds_dsi); |
| 1604 | } |
| 1605 | |
Archit Taneja | f1da39d | 2011-05-12 17:26:27 +0530 | [diff] [blame] | 1606 | dsi->vdds_dsi_reg = vdds_dsi; |
Tomi Valkeinen | f2988ab | 2011-03-02 10:06:48 +0200 | [diff] [blame] | 1607 | } |
Tomi Valkeinen | f2988ab | 2011-03-02 10:06:48 +0200 | [diff] [blame] | 1608 | |
Archit Taneja | a72b64b | 2011-05-12 17:26:26 +0530 | [diff] [blame] | 1609 | dsi_enable_pll_clock(dsidev, 1); |
Tomi Valkeinen | 24c1ae4 | 2011-04-13 17:12:52 +0300 | [diff] [blame] | 1610 | /* |
| 1611 | * Note: SCP CLK is not required on OMAP3, but it is required on OMAP4. |
| 1612 | */ |
Archit Taneja | a72b64b | 2011-05-12 17:26:26 +0530 | [diff] [blame] | 1613 | dsi_enable_scp_clk(dsidev); |
Tomi Valkeinen | 3de7a1d | 2009-10-28 11:59:56 +0200 | [diff] [blame] | 1614 | |
Archit Taneja | f1da39d | 2011-05-12 17:26:27 +0530 | [diff] [blame] | 1615 | if (!dsi->vdds_dsi_enabled) { |
| 1616 | r = regulator_enable(dsi->vdds_dsi_reg); |
Tomi Valkeinen | 2a89dc1 | 2010-07-30 12:39:34 +0300 | [diff] [blame] | 1617 | if (r) |
| 1618 | goto err0; |
Archit Taneja | f1da39d | 2011-05-12 17:26:27 +0530 | [diff] [blame] | 1619 | dsi->vdds_dsi_enabled = true; |
Tomi Valkeinen | 2a89dc1 | 2010-07-30 12:39:34 +0300 | [diff] [blame] | 1620 | } |
Tomi Valkeinen | 3de7a1d | 2009-10-28 11:59:56 +0200 | [diff] [blame] | 1621 | |
| 1622 | /* XXX PLL does not come out of reset without this... */ |
| 1623 | dispc_pck_free_enable(1); |
| 1624 | |
Archit Taneja | a72b64b | 2011-05-12 17:26:26 +0530 | [diff] [blame] | 1625 | if (wait_for_bit_change(dsidev, DSI_PLL_STATUS, 0, 1) != 1) { |
Tomi Valkeinen | 3de7a1d | 2009-10-28 11:59:56 +0200 | [diff] [blame] | 1626 | DSSERR("PLL not coming out of reset.\n"); |
| 1627 | r = -ENODEV; |
Ville Syrjälä | 481dfa0 | 2010-04-22 22:50:04 +0200 | [diff] [blame] | 1628 | dispc_pck_free_enable(0); |
Tomi Valkeinen | 3de7a1d | 2009-10-28 11:59:56 +0200 | [diff] [blame] | 1629 | goto err1; |
| 1630 | } |
| 1631 | |
| 1632 | /* XXX ... but if left on, we get problems when planes do not |
| 1633 | * fill the whole display. No idea about this */ |
| 1634 | dispc_pck_free_enable(0); |
| 1635 | |
| 1636 | if (enable_hsclk && enable_hsdiv) |
| 1637 | pwstate = DSI_PLL_POWER_ON_ALL; |
| 1638 | else if (enable_hsclk) |
| 1639 | pwstate = DSI_PLL_POWER_ON_HSCLK; |
| 1640 | else if (enable_hsdiv) |
| 1641 | pwstate = DSI_PLL_POWER_ON_DIV; |
| 1642 | else |
| 1643 | pwstate = DSI_PLL_POWER_OFF; |
| 1644 | |
Archit Taneja | a72b64b | 2011-05-12 17:26:26 +0530 | [diff] [blame] | 1645 | r = dsi_pll_power(dsidev, pwstate); |
Tomi Valkeinen | 3de7a1d | 2009-10-28 11:59:56 +0200 | [diff] [blame] | 1646 | |
| 1647 | if (r) |
| 1648 | goto err1; |
| 1649 | |
| 1650 | DSSDBG("PLL init done\n"); |
| 1651 | |
| 1652 | return 0; |
| 1653 | err1: |
Archit Taneja | f1da39d | 2011-05-12 17:26:27 +0530 | [diff] [blame] | 1654 | if (dsi->vdds_dsi_enabled) { |
| 1655 | regulator_disable(dsi->vdds_dsi_reg); |
| 1656 | dsi->vdds_dsi_enabled = false; |
Tomi Valkeinen | 2a89dc1 | 2010-07-30 12:39:34 +0300 | [diff] [blame] | 1657 | } |
Tomi Valkeinen | 3de7a1d | 2009-10-28 11:59:56 +0200 | [diff] [blame] | 1658 | err0: |
Archit Taneja | a72b64b | 2011-05-12 17:26:26 +0530 | [diff] [blame] | 1659 | dsi_disable_scp_clk(dsidev); |
Archit Taneja | a72b64b | 2011-05-12 17:26:26 +0530 | [diff] [blame] | 1660 | dsi_enable_pll_clock(dsidev, 0); |
Tomi Valkeinen | 3de7a1d | 2009-10-28 11:59:56 +0200 | [diff] [blame] | 1661 | return r; |
| 1662 | } |
| 1663 | |
Archit Taneja | a72b64b | 2011-05-12 17:26:26 +0530 | [diff] [blame] | 1664 | void dsi_pll_uninit(struct platform_device *dsidev, bool disconnect_lanes) |
Tomi Valkeinen | 3de7a1d | 2009-10-28 11:59:56 +0200 | [diff] [blame] | 1665 | { |
Archit Taneja | f1da39d | 2011-05-12 17:26:27 +0530 | [diff] [blame] | 1666 | struct dsi_data *dsi = dsi_get_dsidrv_data(dsidev); |
| 1667 | |
| 1668 | dsi->pll_locked = 0; |
Archit Taneja | a72b64b | 2011-05-12 17:26:26 +0530 | [diff] [blame] | 1669 | dsi_pll_power(dsidev, DSI_PLL_POWER_OFF); |
Tomi Valkeinen | 2a89dc1 | 2010-07-30 12:39:34 +0300 | [diff] [blame] | 1670 | if (disconnect_lanes) { |
Archit Taneja | f1da39d | 2011-05-12 17:26:27 +0530 | [diff] [blame] | 1671 | WARN_ON(!dsi->vdds_dsi_enabled); |
| 1672 | regulator_disable(dsi->vdds_dsi_reg); |
| 1673 | dsi->vdds_dsi_enabled = false; |
Tomi Valkeinen | 2a89dc1 | 2010-07-30 12:39:34 +0300 | [diff] [blame] | 1674 | } |
Tomi Valkeinen | 24c1ae4 | 2011-04-13 17:12:52 +0300 | [diff] [blame] | 1675 | |
Archit Taneja | a72b64b | 2011-05-12 17:26:26 +0530 | [diff] [blame] | 1676 | dsi_disable_scp_clk(dsidev); |
Archit Taneja | a72b64b | 2011-05-12 17:26:26 +0530 | [diff] [blame] | 1677 | dsi_enable_pll_clock(dsidev, 0); |
Tomi Valkeinen | 24c1ae4 | 2011-04-13 17:12:52 +0300 | [diff] [blame] | 1678 | |
Tomi Valkeinen | 3de7a1d | 2009-10-28 11:59:56 +0200 | [diff] [blame] | 1679 | DSSDBG("PLL uninit done\n"); |
| 1680 | } |
| 1681 | |
Archit Taneja | 5a8b572 | 2011-05-12 17:26:29 +0530 | [diff] [blame] | 1682 | static void dsi_dump_dsidev_clocks(struct platform_device *dsidev, |
| 1683 | struct seq_file *s) |
Tomi Valkeinen | 3de7a1d | 2009-10-28 11:59:56 +0200 | [diff] [blame] | 1684 | { |
Archit Taneja | f1da39d | 2011-05-12 17:26:27 +0530 | [diff] [blame] | 1685 | struct dsi_data *dsi = dsi_get_dsidrv_data(dsidev); |
| 1686 | struct dsi_clock_info *cinfo = &dsi->current_cinfo; |
Archit Taneja | 89a35e5 | 2011-04-12 13:52:23 +0530 | [diff] [blame] | 1687 | enum omap_dss_clk_source dispc_clk_src, dsi_clk_src; |
Archit Taneja | 5a8b572 | 2011-05-12 17:26:29 +0530 | [diff] [blame] | 1688 | int dsi_module = dsi_get_dsidev_id(dsidev); |
Archit Taneja | 067a57e | 2011-03-02 11:57:25 +0530 | [diff] [blame] | 1689 | |
| 1690 | dispc_clk_src = dss_get_dispc_clk_source(); |
Archit Taneja | 5a8b572 | 2011-05-12 17:26:29 +0530 | [diff] [blame] | 1691 | dsi_clk_src = dss_get_dsi_clk_source(dsi_module); |
Tomi Valkeinen | 3de7a1d | 2009-10-28 11:59:56 +0200 | [diff] [blame] | 1692 | |
Tomi Valkeinen | 4fbafaf | 2011-05-27 10:52:19 +0300 | [diff] [blame] | 1693 | if (dsi_runtime_get(dsidev)) |
| 1694 | return; |
Tomi Valkeinen | 3de7a1d | 2009-10-28 11:59:56 +0200 | [diff] [blame] | 1695 | |
Archit Taneja | 5a8b572 | 2011-05-12 17:26:29 +0530 | [diff] [blame] | 1696 | seq_printf(s, "- DSI%d PLL -\n", dsi_module + 1); |
Tomi Valkeinen | 3de7a1d | 2009-10-28 11:59:56 +0200 | [diff] [blame] | 1697 | |
| 1698 | seq_printf(s, "dsi pll source = %s\n", |
Tomi Valkeinen | a9a6500 | 2011-04-04 10:02:53 +0300 | [diff] [blame] | 1699 | cinfo->use_sys_clk ? "dss_sys_clk" : "pclkfree"); |
Tomi Valkeinen | 3de7a1d | 2009-10-28 11:59:56 +0200 | [diff] [blame] | 1700 | |
| 1701 | seq_printf(s, "Fint\t\t%-16luregn %u\n", cinfo->fint, cinfo->regn); |
| 1702 | |
| 1703 | seq_printf(s, "CLKIN4DDR\t%-16luregm %u\n", |
| 1704 | cinfo->clkin4ddr, cinfo->regm); |
| 1705 | |
Archit Taneja | 1bb4783 | 2011-02-24 14:17:30 +0530 | [diff] [blame] | 1706 | seq_printf(s, "%s (%s)\t%-16luregm_dispc %u\t(%s)\n", |
Archit Taneja | 067a57e | 2011-03-02 11:57:25 +0530 | [diff] [blame] | 1707 | dss_get_generic_clk_source_name(dispc_clk_src), |
| 1708 | dss_feat_get_clk_source_name(dispc_clk_src), |
Archit Taneja | 1bb4783 | 2011-02-24 14:17:30 +0530 | [diff] [blame] | 1709 | cinfo->dsi_pll_hsdiv_dispc_clk, |
| 1710 | cinfo->regm_dispc, |
Archit Taneja | 89a35e5 | 2011-04-12 13:52:23 +0530 | [diff] [blame] | 1711 | dispc_clk_src == OMAP_DSS_CLK_SRC_FCK ? |
Tomi Valkeinen | 63cf28a | 2010-02-23 17:40:00 +0200 | [diff] [blame] | 1712 | "off" : "on"); |
Tomi Valkeinen | 3de7a1d | 2009-10-28 11:59:56 +0200 | [diff] [blame] | 1713 | |
Archit Taneja | 1bb4783 | 2011-02-24 14:17:30 +0530 | [diff] [blame] | 1714 | seq_printf(s, "%s (%s)\t%-16luregm_dsi %u\t(%s)\n", |
Archit Taneja | 067a57e | 2011-03-02 11:57:25 +0530 | [diff] [blame] | 1715 | dss_get_generic_clk_source_name(dsi_clk_src), |
| 1716 | dss_feat_get_clk_source_name(dsi_clk_src), |
Archit Taneja | 1bb4783 | 2011-02-24 14:17:30 +0530 | [diff] [blame] | 1717 | cinfo->dsi_pll_hsdiv_dsi_clk, |
| 1718 | cinfo->regm_dsi, |
Archit Taneja | 89a35e5 | 2011-04-12 13:52:23 +0530 | [diff] [blame] | 1719 | dsi_clk_src == OMAP_DSS_CLK_SRC_FCK ? |
Tomi Valkeinen | 63cf28a | 2010-02-23 17:40:00 +0200 | [diff] [blame] | 1720 | "off" : "on"); |
Tomi Valkeinen | 3de7a1d | 2009-10-28 11:59:56 +0200 | [diff] [blame] | 1721 | |
Archit Taneja | 5a8b572 | 2011-05-12 17:26:29 +0530 | [diff] [blame] | 1722 | seq_printf(s, "- DSI%d -\n", dsi_module + 1); |
Tomi Valkeinen | 3de7a1d | 2009-10-28 11:59:56 +0200 | [diff] [blame] | 1723 | |
Archit Taneja | 067a57e | 2011-03-02 11:57:25 +0530 | [diff] [blame] | 1724 | seq_printf(s, "dsi fclk source = %s (%s)\n", |
| 1725 | dss_get_generic_clk_source_name(dsi_clk_src), |
| 1726 | dss_feat_get_clk_source_name(dsi_clk_src)); |
Tomi Valkeinen | 3de7a1d | 2009-10-28 11:59:56 +0200 | [diff] [blame] | 1727 | |
Archit Taneja | a72b64b | 2011-05-12 17:26:26 +0530 | [diff] [blame] | 1728 | seq_printf(s, "DSI_FCLK\t%lu\n", dsi_fclk_rate(dsidev)); |
Tomi Valkeinen | 3de7a1d | 2009-10-28 11:59:56 +0200 | [diff] [blame] | 1729 | |
| 1730 | seq_printf(s, "DDR_CLK\t\t%lu\n", |
| 1731 | cinfo->clkin4ddr / 4); |
| 1732 | |
Archit Taneja | a72b64b | 2011-05-12 17:26:26 +0530 | [diff] [blame] | 1733 | seq_printf(s, "TxByteClkHS\t%lu\n", dsi_get_txbyteclkhs(dsidev)); |
Tomi Valkeinen | 3de7a1d | 2009-10-28 11:59:56 +0200 | [diff] [blame] | 1734 | |
| 1735 | seq_printf(s, "LP_CLK\t\t%lu\n", cinfo->lp_clk); |
| 1736 | |
Tomi Valkeinen | 4fbafaf | 2011-05-27 10:52:19 +0300 | [diff] [blame] | 1737 | dsi_runtime_put(dsidev); |
Tomi Valkeinen | 3de7a1d | 2009-10-28 11:59:56 +0200 | [diff] [blame] | 1738 | } |
| 1739 | |
Archit Taneja | 5a8b572 | 2011-05-12 17:26:29 +0530 | [diff] [blame] | 1740 | void dsi_dump_clocks(struct seq_file *s) |
Tomi Valkeinen | dfc0fd8 | 2009-12-17 14:35:21 +0200 | [diff] [blame] | 1741 | { |
Archit Taneja | 5a8b572 | 2011-05-12 17:26:29 +0530 | [diff] [blame] | 1742 | struct platform_device *dsidev; |
| 1743 | int i; |
| 1744 | |
| 1745 | for (i = 0; i < MAX_NUM_DSI; i++) { |
| 1746 | dsidev = dsi_get_dsidev_from_id(i); |
| 1747 | if (dsidev) |
| 1748 | dsi_dump_dsidev_clocks(dsidev, s); |
| 1749 | } |
| 1750 | } |
| 1751 | |
| 1752 | #ifdef CONFIG_OMAP2_DSS_COLLECT_IRQ_STATS |
| 1753 | static void dsi_dump_dsidev_irqs(struct platform_device *dsidev, |
| 1754 | struct seq_file *s) |
| 1755 | { |
Archit Taneja | f1da39d | 2011-05-12 17:26:27 +0530 | [diff] [blame] | 1756 | struct dsi_data *dsi = dsi_get_dsidrv_data(dsidev); |
Tomi Valkeinen | dfc0fd8 | 2009-12-17 14:35:21 +0200 | [diff] [blame] | 1757 | unsigned long flags; |
| 1758 | struct dsi_irq_stats stats; |
Archit Taneja | 5a8b572 | 2011-05-12 17:26:29 +0530 | [diff] [blame] | 1759 | int dsi_module = dsi_get_dsidev_id(dsidev); |
Tomi Valkeinen | dfc0fd8 | 2009-12-17 14:35:21 +0200 | [diff] [blame] | 1760 | |
Archit Taneja | f1da39d | 2011-05-12 17:26:27 +0530 | [diff] [blame] | 1761 | spin_lock_irqsave(&dsi->irq_stats_lock, flags); |
Tomi Valkeinen | dfc0fd8 | 2009-12-17 14:35:21 +0200 | [diff] [blame] | 1762 | |
Archit Taneja | f1da39d | 2011-05-12 17:26:27 +0530 | [diff] [blame] | 1763 | stats = dsi->irq_stats; |
| 1764 | memset(&dsi->irq_stats, 0, sizeof(dsi->irq_stats)); |
| 1765 | dsi->irq_stats.last_reset = jiffies; |
Tomi Valkeinen | dfc0fd8 | 2009-12-17 14:35:21 +0200 | [diff] [blame] | 1766 | |
Archit Taneja | f1da39d | 2011-05-12 17:26:27 +0530 | [diff] [blame] | 1767 | spin_unlock_irqrestore(&dsi->irq_stats_lock, flags); |
Tomi Valkeinen | dfc0fd8 | 2009-12-17 14:35:21 +0200 | [diff] [blame] | 1768 | |
| 1769 | seq_printf(s, "period %u ms\n", |
| 1770 | jiffies_to_msecs(jiffies - stats.last_reset)); |
| 1771 | |
| 1772 | seq_printf(s, "irqs %d\n", stats.irq_count); |
| 1773 | #define PIS(x) \ |
| 1774 | seq_printf(s, "%-20s %10d\n", #x, stats.dsi_irqs[ffs(DSI_IRQ_##x)-1]); |
| 1775 | |
Archit Taneja | 5a8b572 | 2011-05-12 17:26:29 +0530 | [diff] [blame] | 1776 | seq_printf(s, "-- DSI%d interrupts --\n", dsi_module + 1); |
Tomi Valkeinen | dfc0fd8 | 2009-12-17 14:35:21 +0200 | [diff] [blame] | 1777 | PIS(VC0); |
| 1778 | PIS(VC1); |
| 1779 | PIS(VC2); |
| 1780 | PIS(VC3); |
| 1781 | PIS(WAKEUP); |
| 1782 | PIS(RESYNC); |
| 1783 | PIS(PLL_LOCK); |
| 1784 | PIS(PLL_UNLOCK); |
| 1785 | PIS(PLL_RECALL); |
| 1786 | PIS(COMPLEXIO_ERR); |
| 1787 | PIS(HS_TX_TIMEOUT); |
| 1788 | PIS(LP_RX_TIMEOUT); |
| 1789 | PIS(TE_TRIGGER); |
| 1790 | PIS(ACK_TRIGGER); |
| 1791 | PIS(SYNC_LOST); |
| 1792 | PIS(LDO_POWER_GOOD); |
| 1793 | PIS(TA_TIMEOUT); |
| 1794 | #undef PIS |
| 1795 | |
| 1796 | #define PIS(x) \ |
| 1797 | seq_printf(s, "%-20s %10d %10d %10d %10d\n", #x, \ |
| 1798 | stats.vc_irqs[0][ffs(DSI_VC_IRQ_##x)-1], \ |
| 1799 | stats.vc_irqs[1][ffs(DSI_VC_IRQ_##x)-1], \ |
| 1800 | stats.vc_irqs[2][ffs(DSI_VC_IRQ_##x)-1], \ |
| 1801 | stats.vc_irqs[3][ffs(DSI_VC_IRQ_##x)-1]); |
| 1802 | |
| 1803 | seq_printf(s, "-- VC interrupts --\n"); |
| 1804 | PIS(CS); |
| 1805 | PIS(ECC_CORR); |
| 1806 | PIS(PACKET_SENT); |
| 1807 | PIS(FIFO_TX_OVF); |
| 1808 | PIS(FIFO_RX_OVF); |
| 1809 | PIS(BTA); |
| 1810 | PIS(ECC_NO_CORR); |
| 1811 | PIS(FIFO_TX_UDF); |
| 1812 | PIS(PP_BUSY_CHANGE); |
| 1813 | #undef PIS |
| 1814 | |
| 1815 | #define PIS(x) \ |
| 1816 | seq_printf(s, "%-20s %10d\n", #x, \ |
| 1817 | stats.cio_irqs[ffs(DSI_CIO_IRQ_##x)-1]); |
| 1818 | |
| 1819 | seq_printf(s, "-- CIO interrupts --\n"); |
| 1820 | PIS(ERRSYNCESC1); |
| 1821 | PIS(ERRSYNCESC2); |
| 1822 | PIS(ERRSYNCESC3); |
| 1823 | PIS(ERRESC1); |
| 1824 | PIS(ERRESC2); |
| 1825 | PIS(ERRESC3); |
| 1826 | PIS(ERRCONTROL1); |
| 1827 | PIS(ERRCONTROL2); |
| 1828 | PIS(ERRCONTROL3); |
| 1829 | PIS(STATEULPS1); |
| 1830 | PIS(STATEULPS2); |
| 1831 | PIS(STATEULPS3); |
| 1832 | PIS(ERRCONTENTIONLP0_1); |
| 1833 | PIS(ERRCONTENTIONLP1_1); |
| 1834 | PIS(ERRCONTENTIONLP0_2); |
| 1835 | PIS(ERRCONTENTIONLP1_2); |
| 1836 | PIS(ERRCONTENTIONLP0_3); |
| 1837 | PIS(ERRCONTENTIONLP1_3); |
| 1838 | PIS(ULPSACTIVENOT_ALL0); |
| 1839 | PIS(ULPSACTIVENOT_ALL1); |
| 1840 | #undef PIS |
| 1841 | } |
Tomi Valkeinen | dfc0fd8 | 2009-12-17 14:35:21 +0200 | [diff] [blame] | 1842 | |
Archit Taneja | 5a8b572 | 2011-05-12 17:26:29 +0530 | [diff] [blame] | 1843 | static void dsi1_dump_irqs(struct seq_file *s) |
Tomi Valkeinen | 3de7a1d | 2009-10-28 11:59:56 +0200 | [diff] [blame] | 1844 | { |
Archit Taneja | a72b64b | 2011-05-12 17:26:26 +0530 | [diff] [blame] | 1845 | struct platform_device *dsidev = dsi_get_dsidev_from_id(0); |
| 1846 | |
Archit Taneja | 5a8b572 | 2011-05-12 17:26:29 +0530 | [diff] [blame] | 1847 | dsi_dump_dsidev_irqs(dsidev, s); |
| 1848 | } |
| 1849 | |
| 1850 | static void dsi2_dump_irqs(struct seq_file *s) |
| 1851 | { |
| 1852 | struct platform_device *dsidev = dsi_get_dsidev_from_id(1); |
| 1853 | |
| 1854 | dsi_dump_dsidev_irqs(dsidev, s); |
| 1855 | } |
| 1856 | |
| 1857 | void dsi_create_debugfs_files_irq(struct dentry *debugfs_dir, |
| 1858 | const struct file_operations *debug_fops) |
| 1859 | { |
| 1860 | struct platform_device *dsidev; |
| 1861 | |
| 1862 | dsidev = dsi_get_dsidev_from_id(0); |
| 1863 | if (dsidev) |
| 1864 | debugfs_create_file("dsi1_irqs", S_IRUGO, debugfs_dir, |
| 1865 | &dsi1_dump_irqs, debug_fops); |
| 1866 | |
| 1867 | dsidev = dsi_get_dsidev_from_id(1); |
| 1868 | if (dsidev) |
| 1869 | debugfs_create_file("dsi2_irqs", S_IRUGO, debugfs_dir, |
| 1870 | &dsi2_dump_irqs, debug_fops); |
| 1871 | } |
| 1872 | #endif |
| 1873 | |
| 1874 | static void dsi_dump_dsidev_regs(struct platform_device *dsidev, |
| 1875 | struct seq_file *s) |
| 1876 | { |
Archit Taneja | a72b64b | 2011-05-12 17:26:26 +0530 | [diff] [blame] | 1877 | #define DUMPREG(r) seq_printf(s, "%-35s %08x\n", #r, dsi_read_reg(dsidev, r)) |
Tomi Valkeinen | 3de7a1d | 2009-10-28 11:59:56 +0200 | [diff] [blame] | 1878 | |
Tomi Valkeinen | 4fbafaf | 2011-05-27 10:52:19 +0300 | [diff] [blame] | 1879 | if (dsi_runtime_get(dsidev)) |
| 1880 | return; |
Archit Taneja | a72b64b | 2011-05-12 17:26:26 +0530 | [diff] [blame] | 1881 | dsi_enable_scp_clk(dsidev); |
Tomi Valkeinen | 3de7a1d | 2009-10-28 11:59:56 +0200 | [diff] [blame] | 1882 | |
| 1883 | DUMPREG(DSI_REVISION); |
| 1884 | DUMPREG(DSI_SYSCONFIG); |
| 1885 | DUMPREG(DSI_SYSSTATUS); |
| 1886 | DUMPREG(DSI_IRQSTATUS); |
| 1887 | DUMPREG(DSI_IRQENABLE); |
| 1888 | DUMPREG(DSI_CTRL); |
| 1889 | DUMPREG(DSI_COMPLEXIO_CFG1); |
| 1890 | DUMPREG(DSI_COMPLEXIO_IRQ_STATUS); |
| 1891 | DUMPREG(DSI_COMPLEXIO_IRQ_ENABLE); |
| 1892 | DUMPREG(DSI_CLK_CTRL); |
| 1893 | DUMPREG(DSI_TIMING1); |
| 1894 | DUMPREG(DSI_TIMING2); |
| 1895 | DUMPREG(DSI_VM_TIMING1); |
| 1896 | DUMPREG(DSI_VM_TIMING2); |
| 1897 | DUMPREG(DSI_VM_TIMING3); |
| 1898 | DUMPREG(DSI_CLK_TIMING); |
| 1899 | DUMPREG(DSI_TX_FIFO_VC_SIZE); |
| 1900 | DUMPREG(DSI_RX_FIFO_VC_SIZE); |
| 1901 | DUMPREG(DSI_COMPLEXIO_CFG2); |
| 1902 | DUMPREG(DSI_RX_FIFO_VC_FULLNESS); |
| 1903 | DUMPREG(DSI_VM_TIMING4); |
| 1904 | DUMPREG(DSI_TX_FIFO_VC_EMPTINESS); |
| 1905 | DUMPREG(DSI_VM_TIMING5); |
| 1906 | DUMPREG(DSI_VM_TIMING6); |
| 1907 | DUMPREG(DSI_VM_TIMING7); |
| 1908 | DUMPREG(DSI_STOPCLK_TIMING); |
| 1909 | |
| 1910 | DUMPREG(DSI_VC_CTRL(0)); |
| 1911 | DUMPREG(DSI_VC_TE(0)); |
| 1912 | DUMPREG(DSI_VC_LONG_PACKET_HEADER(0)); |
| 1913 | DUMPREG(DSI_VC_LONG_PACKET_PAYLOAD(0)); |
| 1914 | DUMPREG(DSI_VC_SHORT_PACKET_HEADER(0)); |
| 1915 | DUMPREG(DSI_VC_IRQSTATUS(0)); |
| 1916 | DUMPREG(DSI_VC_IRQENABLE(0)); |
| 1917 | |
| 1918 | DUMPREG(DSI_VC_CTRL(1)); |
| 1919 | DUMPREG(DSI_VC_TE(1)); |
| 1920 | DUMPREG(DSI_VC_LONG_PACKET_HEADER(1)); |
| 1921 | DUMPREG(DSI_VC_LONG_PACKET_PAYLOAD(1)); |
| 1922 | DUMPREG(DSI_VC_SHORT_PACKET_HEADER(1)); |
| 1923 | DUMPREG(DSI_VC_IRQSTATUS(1)); |
| 1924 | DUMPREG(DSI_VC_IRQENABLE(1)); |
| 1925 | |
| 1926 | DUMPREG(DSI_VC_CTRL(2)); |
| 1927 | DUMPREG(DSI_VC_TE(2)); |
| 1928 | DUMPREG(DSI_VC_LONG_PACKET_HEADER(2)); |
| 1929 | DUMPREG(DSI_VC_LONG_PACKET_PAYLOAD(2)); |
| 1930 | DUMPREG(DSI_VC_SHORT_PACKET_HEADER(2)); |
| 1931 | DUMPREG(DSI_VC_IRQSTATUS(2)); |
| 1932 | DUMPREG(DSI_VC_IRQENABLE(2)); |
| 1933 | |
| 1934 | DUMPREG(DSI_VC_CTRL(3)); |
| 1935 | DUMPREG(DSI_VC_TE(3)); |
| 1936 | DUMPREG(DSI_VC_LONG_PACKET_HEADER(3)); |
| 1937 | DUMPREG(DSI_VC_LONG_PACKET_PAYLOAD(3)); |
| 1938 | DUMPREG(DSI_VC_SHORT_PACKET_HEADER(3)); |
| 1939 | DUMPREG(DSI_VC_IRQSTATUS(3)); |
| 1940 | DUMPREG(DSI_VC_IRQENABLE(3)); |
| 1941 | |
| 1942 | DUMPREG(DSI_DSIPHY_CFG0); |
| 1943 | DUMPREG(DSI_DSIPHY_CFG1); |
| 1944 | DUMPREG(DSI_DSIPHY_CFG2); |
| 1945 | DUMPREG(DSI_DSIPHY_CFG5); |
| 1946 | |
| 1947 | DUMPREG(DSI_PLL_CONTROL); |
| 1948 | DUMPREG(DSI_PLL_STATUS); |
| 1949 | DUMPREG(DSI_PLL_GO); |
| 1950 | DUMPREG(DSI_PLL_CONFIGURATION1); |
| 1951 | DUMPREG(DSI_PLL_CONFIGURATION2); |
| 1952 | |
Archit Taneja | a72b64b | 2011-05-12 17:26:26 +0530 | [diff] [blame] | 1953 | dsi_disable_scp_clk(dsidev); |
Tomi Valkeinen | 4fbafaf | 2011-05-27 10:52:19 +0300 | [diff] [blame] | 1954 | dsi_runtime_put(dsidev); |
Tomi Valkeinen | 3de7a1d | 2009-10-28 11:59:56 +0200 | [diff] [blame] | 1955 | #undef DUMPREG |
| 1956 | } |
| 1957 | |
Archit Taneja | 5a8b572 | 2011-05-12 17:26:29 +0530 | [diff] [blame] | 1958 | static void dsi1_dump_regs(struct seq_file *s) |
| 1959 | { |
| 1960 | struct platform_device *dsidev = dsi_get_dsidev_from_id(0); |
| 1961 | |
| 1962 | dsi_dump_dsidev_regs(dsidev, s); |
| 1963 | } |
| 1964 | |
| 1965 | static void dsi2_dump_regs(struct seq_file *s) |
| 1966 | { |
| 1967 | struct platform_device *dsidev = dsi_get_dsidev_from_id(1); |
| 1968 | |
| 1969 | dsi_dump_dsidev_regs(dsidev, s); |
| 1970 | } |
| 1971 | |
| 1972 | void dsi_create_debugfs_files_reg(struct dentry *debugfs_dir, |
| 1973 | const struct file_operations *debug_fops) |
| 1974 | { |
| 1975 | struct platform_device *dsidev; |
| 1976 | |
| 1977 | dsidev = dsi_get_dsidev_from_id(0); |
| 1978 | if (dsidev) |
| 1979 | debugfs_create_file("dsi1_regs", S_IRUGO, debugfs_dir, |
| 1980 | &dsi1_dump_regs, debug_fops); |
| 1981 | |
| 1982 | dsidev = dsi_get_dsidev_from_id(1); |
| 1983 | if (dsidev) |
| 1984 | debugfs_create_file("dsi2_regs", S_IRUGO, debugfs_dir, |
| 1985 | &dsi2_dump_regs, debug_fops); |
| 1986 | } |
Tomi Valkeinen | cc5c185 | 2010-10-06 15:18:13 +0300 | [diff] [blame] | 1987 | enum dsi_cio_power_state { |
Tomi Valkeinen | 3de7a1d | 2009-10-28 11:59:56 +0200 | [diff] [blame] | 1988 | DSI_COMPLEXIO_POWER_OFF = 0x0, |
| 1989 | DSI_COMPLEXIO_POWER_ON = 0x1, |
| 1990 | DSI_COMPLEXIO_POWER_ULPS = 0x2, |
| 1991 | }; |
| 1992 | |
Archit Taneja | a72b64b | 2011-05-12 17:26:26 +0530 | [diff] [blame] | 1993 | static int dsi_cio_power(struct platform_device *dsidev, |
| 1994 | enum dsi_cio_power_state state) |
Tomi Valkeinen | 3de7a1d | 2009-10-28 11:59:56 +0200 | [diff] [blame] | 1995 | { |
| 1996 | int t = 0; |
| 1997 | |
| 1998 | /* PWR_CMD */ |
Archit Taneja | a72b64b | 2011-05-12 17:26:26 +0530 | [diff] [blame] | 1999 | REG_FLD_MOD(dsidev, DSI_COMPLEXIO_CFG1, state, 28, 27); |
Tomi Valkeinen | 3de7a1d | 2009-10-28 11:59:56 +0200 | [diff] [blame] | 2000 | |
| 2001 | /* PWR_STATUS */ |
Archit Taneja | a72b64b | 2011-05-12 17:26:26 +0530 | [diff] [blame] | 2002 | while (FLD_GET(dsi_read_reg(dsidev, DSI_COMPLEXIO_CFG1), |
| 2003 | 26, 25) != state) { |
Tomi Valkeinen | 24be78b | 2010-01-07 14:19:48 +0200 | [diff] [blame] | 2004 | if (++t > 1000) { |
Tomi Valkeinen | 3de7a1d | 2009-10-28 11:59:56 +0200 | [diff] [blame] | 2005 | DSSERR("failed to set complexio power state to " |
| 2006 | "%d\n", state); |
| 2007 | return -ENODEV; |
| 2008 | } |
Tomi Valkeinen | 24be78b | 2010-01-07 14:19:48 +0200 | [diff] [blame] | 2009 | udelay(1); |
Tomi Valkeinen | 3de7a1d | 2009-10-28 11:59:56 +0200 | [diff] [blame] | 2010 | } |
| 2011 | |
| 2012 | return 0; |
| 2013 | } |
| 2014 | |
Archit Taneja | 75d7247 | 2011-05-16 15:17:08 +0530 | [diff] [blame] | 2015 | /* Number of data lanes present on DSI interface */ |
| 2016 | static inline int dsi_get_num_data_lanes(struct platform_device *dsidev) |
| 2017 | { |
| 2018 | /* DSI on OMAP3 doesn't have register DSI_GNQ, set number |
| 2019 | * of data lanes as 2 by default */ |
| 2020 | if (dss_has_feature(FEAT_DSI_GNQ)) |
| 2021 | return REG_GET(dsidev, DSI_GNQ, 11, 9); /* NB_DATA_LANES */ |
| 2022 | else |
| 2023 | return 2; |
| 2024 | } |
| 2025 | |
| 2026 | /* Number of data lanes used by the dss device */ |
| 2027 | static inline int dsi_get_num_data_lanes_dssdev(struct omap_dss_device *dssdev) |
| 2028 | { |
| 2029 | int num_data_lanes = 0; |
| 2030 | |
| 2031 | if (dssdev->phy.dsi.data1_lane != 0) |
| 2032 | num_data_lanes++; |
| 2033 | if (dssdev->phy.dsi.data2_lane != 0) |
| 2034 | num_data_lanes++; |
| 2035 | if (dssdev->phy.dsi.data3_lane != 0) |
| 2036 | num_data_lanes++; |
| 2037 | if (dssdev->phy.dsi.data4_lane != 0) |
| 2038 | num_data_lanes++; |
| 2039 | |
| 2040 | return num_data_lanes; |
| 2041 | } |
| 2042 | |
Archit Taneja | 0c65622 | 2011-05-16 15:17:09 +0530 | [diff] [blame] | 2043 | static unsigned dsi_get_line_buf_size(struct platform_device *dsidev) |
| 2044 | { |
| 2045 | int val; |
| 2046 | |
| 2047 | /* line buffer on OMAP3 is 1024 x 24bits */ |
| 2048 | /* XXX: for some reason using full buffer size causes |
| 2049 | * considerable TX slowdown with update sizes that fill the |
| 2050 | * whole buffer */ |
| 2051 | if (!dss_has_feature(FEAT_DSI_GNQ)) |
| 2052 | return 1023 * 3; |
| 2053 | |
| 2054 | val = REG_GET(dsidev, DSI_GNQ, 14, 12); /* VP1_LINE_BUFFER_SIZE */ |
| 2055 | |
| 2056 | switch (val) { |
| 2057 | case 1: |
| 2058 | return 512 * 3; /* 512x24 bits */ |
| 2059 | case 2: |
| 2060 | return 682 * 3; /* 682x24 bits */ |
| 2061 | case 3: |
| 2062 | return 853 * 3; /* 853x24 bits */ |
| 2063 | case 4: |
| 2064 | return 1024 * 3; /* 1024x24 bits */ |
| 2065 | case 5: |
| 2066 | return 1194 * 3; /* 1194x24 bits */ |
| 2067 | case 6: |
| 2068 | return 1365 * 3; /* 1365x24 bits */ |
| 2069 | default: |
| 2070 | BUG(); |
| 2071 | } |
| 2072 | } |
| 2073 | |
Tomi Valkeinen | cc5c185 | 2010-10-06 15:18:13 +0300 | [diff] [blame] | 2074 | static void dsi_set_lane_config(struct omap_dss_device *dssdev) |
Tomi Valkeinen | 3de7a1d | 2009-10-28 11:59:56 +0200 | [diff] [blame] | 2075 | { |
Archit Taneja | a72b64b | 2011-05-12 17:26:26 +0530 | [diff] [blame] | 2076 | struct platform_device *dsidev = dsi_get_dsidev_from_dssdev(dssdev); |
Tomi Valkeinen | 3de7a1d | 2009-10-28 11:59:56 +0200 | [diff] [blame] | 2077 | u32 r; |
Archit Taneja | 75d7247 | 2011-05-16 15:17:08 +0530 | [diff] [blame] | 2078 | int num_data_lanes_dssdev = dsi_get_num_data_lanes_dssdev(dssdev); |
Tomi Valkeinen | 3de7a1d | 2009-10-28 11:59:56 +0200 | [diff] [blame] | 2079 | |
| 2080 | int clk_lane = dssdev->phy.dsi.clk_lane; |
| 2081 | int data1_lane = dssdev->phy.dsi.data1_lane; |
| 2082 | int data2_lane = dssdev->phy.dsi.data2_lane; |
| 2083 | int clk_pol = dssdev->phy.dsi.clk_pol; |
| 2084 | int data1_pol = dssdev->phy.dsi.data1_pol; |
| 2085 | int data2_pol = dssdev->phy.dsi.data2_pol; |
| 2086 | |
Archit Taneja | a72b64b | 2011-05-12 17:26:26 +0530 | [diff] [blame] | 2087 | r = dsi_read_reg(dsidev, DSI_COMPLEXIO_CFG1); |
Tomi Valkeinen | 3de7a1d | 2009-10-28 11:59:56 +0200 | [diff] [blame] | 2088 | r = FLD_MOD(r, clk_lane, 2, 0); |
| 2089 | r = FLD_MOD(r, clk_pol, 3, 3); |
| 2090 | r = FLD_MOD(r, data1_lane, 6, 4); |
| 2091 | r = FLD_MOD(r, data1_pol, 7, 7); |
| 2092 | r = FLD_MOD(r, data2_lane, 10, 8); |
| 2093 | r = FLD_MOD(r, data2_pol, 11, 11); |
Archit Taneja | 75d7247 | 2011-05-16 15:17:08 +0530 | [diff] [blame] | 2094 | if (num_data_lanes_dssdev > 2) { |
| 2095 | int data3_lane = dssdev->phy.dsi.data3_lane; |
| 2096 | int data3_pol = dssdev->phy.dsi.data3_pol; |
| 2097 | |
| 2098 | r = FLD_MOD(r, data3_lane, 14, 12); |
| 2099 | r = FLD_MOD(r, data3_pol, 15, 15); |
| 2100 | } |
| 2101 | if (num_data_lanes_dssdev > 3) { |
| 2102 | int data4_lane = dssdev->phy.dsi.data4_lane; |
| 2103 | int data4_pol = dssdev->phy.dsi.data4_pol; |
| 2104 | |
| 2105 | r = FLD_MOD(r, data4_lane, 18, 16); |
| 2106 | r = FLD_MOD(r, data4_pol, 19, 19); |
| 2107 | } |
Archit Taneja | a72b64b | 2011-05-12 17:26:26 +0530 | [diff] [blame] | 2108 | dsi_write_reg(dsidev, DSI_COMPLEXIO_CFG1, r); |
Tomi Valkeinen | 3de7a1d | 2009-10-28 11:59:56 +0200 | [diff] [blame] | 2109 | |
| 2110 | /* The configuration of the DSI complex I/O (number of data lanes, |
| 2111 | position, differential order) should not be changed while |
| 2112 | DSS.DSI_CLK_CRTRL[20] LP_CLK_ENABLE bit is set to 1. In order for |
| 2113 | the hardware to take into account a new configuration of the complex |
| 2114 | I/O (done in DSS.DSI_COMPLEXIO_CFG1 register), it is recommended to |
| 2115 | follow this sequence: First set the DSS.DSI_CTRL[0] IF_EN bit to 1, |
| 2116 | then reset the DSS.DSI_CTRL[0] IF_EN to 0, then set |
| 2117 | DSS.DSI_CLK_CTRL[20] LP_CLK_ENABLE to 1 and finally set again the |
| 2118 | DSS.DSI_CTRL[0] IF_EN bit to 1. If the sequence is not followed, the |
| 2119 | DSI complex I/O configuration is unknown. */ |
| 2120 | |
| 2121 | /* |
Archit Taneja | a72b64b | 2011-05-12 17:26:26 +0530 | [diff] [blame] | 2122 | REG_FLD_MOD(dsidev, DSI_CTRL, 1, 0, 0); |
| 2123 | REG_FLD_MOD(dsidev, DSI_CTRL, 0, 0, 0); |
| 2124 | REG_FLD_MOD(dsidev, DSI_CLK_CTRL, 1, 20, 20); |
| 2125 | REG_FLD_MOD(dsidev, DSI_CTRL, 1, 0, 0); |
Tomi Valkeinen | 3de7a1d | 2009-10-28 11:59:56 +0200 | [diff] [blame] | 2126 | */ |
| 2127 | } |
| 2128 | |
Archit Taneja | a72b64b | 2011-05-12 17:26:26 +0530 | [diff] [blame] | 2129 | static inline unsigned ns2ddr(struct platform_device *dsidev, unsigned ns) |
Tomi Valkeinen | 3de7a1d | 2009-10-28 11:59:56 +0200 | [diff] [blame] | 2130 | { |
Archit Taneja | f1da39d | 2011-05-12 17:26:27 +0530 | [diff] [blame] | 2131 | struct dsi_data *dsi = dsi_get_dsidrv_data(dsidev); |
| 2132 | |
Tomi Valkeinen | 3de7a1d | 2009-10-28 11:59:56 +0200 | [diff] [blame] | 2133 | /* convert time in ns to ddr ticks, rounding up */ |
Archit Taneja | f1da39d | 2011-05-12 17:26:27 +0530 | [diff] [blame] | 2134 | unsigned long ddr_clk = dsi->current_cinfo.clkin4ddr / 4; |
Tomi Valkeinen | 3de7a1d | 2009-10-28 11:59:56 +0200 | [diff] [blame] | 2135 | return (ns * (ddr_clk / 1000 / 1000) + 999) / 1000; |
| 2136 | } |
| 2137 | |
Archit Taneja | a72b64b | 2011-05-12 17:26:26 +0530 | [diff] [blame] | 2138 | static inline unsigned ddr2ns(struct platform_device *dsidev, unsigned ddr) |
Tomi Valkeinen | 3de7a1d | 2009-10-28 11:59:56 +0200 | [diff] [blame] | 2139 | { |
Archit Taneja | f1da39d | 2011-05-12 17:26:27 +0530 | [diff] [blame] | 2140 | struct dsi_data *dsi = dsi_get_dsidrv_data(dsidev); |
| 2141 | |
| 2142 | unsigned long ddr_clk = dsi->current_cinfo.clkin4ddr / 4; |
Tomi Valkeinen | 3de7a1d | 2009-10-28 11:59:56 +0200 | [diff] [blame] | 2143 | return ddr * 1000 * 1000 / (ddr_clk / 1000); |
| 2144 | } |
| 2145 | |
Archit Taneja | a72b64b | 2011-05-12 17:26:26 +0530 | [diff] [blame] | 2146 | static void dsi_cio_timings(struct platform_device *dsidev) |
Tomi Valkeinen | 3de7a1d | 2009-10-28 11:59:56 +0200 | [diff] [blame] | 2147 | { |
| 2148 | u32 r; |
| 2149 | u32 ths_prepare, ths_prepare_ths_zero, ths_trail, ths_exit; |
| 2150 | u32 tlpx_half, tclk_trail, tclk_zero; |
| 2151 | u32 tclk_prepare; |
| 2152 | |
| 2153 | /* calculate timings */ |
| 2154 | |
| 2155 | /* 1 * DDR_CLK = 2 * UI */ |
| 2156 | |
| 2157 | /* min 40ns + 4*UI max 85ns + 6*UI */ |
Archit Taneja | a72b64b | 2011-05-12 17:26:26 +0530 | [diff] [blame] | 2158 | ths_prepare = ns2ddr(dsidev, 70) + 2; |
Tomi Valkeinen | 3de7a1d | 2009-10-28 11:59:56 +0200 | [diff] [blame] | 2159 | |
| 2160 | /* min 145ns + 10*UI */ |
Archit Taneja | a72b64b | 2011-05-12 17:26:26 +0530 | [diff] [blame] | 2161 | ths_prepare_ths_zero = ns2ddr(dsidev, 175) + 2; |
Tomi Valkeinen | 3de7a1d | 2009-10-28 11:59:56 +0200 | [diff] [blame] | 2162 | |
| 2163 | /* min max(8*UI, 60ns+4*UI) */ |
Archit Taneja | a72b64b | 2011-05-12 17:26:26 +0530 | [diff] [blame] | 2164 | ths_trail = ns2ddr(dsidev, 60) + 5; |
Tomi Valkeinen | 3de7a1d | 2009-10-28 11:59:56 +0200 | [diff] [blame] | 2165 | |
| 2166 | /* min 100ns */ |
Archit Taneja | a72b64b | 2011-05-12 17:26:26 +0530 | [diff] [blame] | 2167 | ths_exit = ns2ddr(dsidev, 145); |
Tomi Valkeinen | 3de7a1d | 2009-10-28 11:59:56 +0200 | [diff] [blame] | 2168 | |
| 2169 | /* tlpx min 50n */ |
Archit Taneja | a72b64b | 2011-05-12 17:26:26 +0530 | [diff] [blame] | 2170 | tlpx_half = ns2ddr(dsidev, 25); |
Tomi Valkeinen | 3de7a1d | 2009-10-28 11:59:56 +0200 | [diff] [blame] | 2171 | |
| 2172 | /* min 60ns */ |
Archit Taneja | a72b64b | 2011-05-12 17:26:26 +0530 | [diff] [blame] | 2173 | tclk_trail = ns2ddr(dsidev, 60) + 2; |
Tomi Valkeinen | 3de7a1d | 2009-10-28 11:59:56 +0200 | [diff] [blame] | 2174 | |
| 2175 | /* min 38ns, max 95ns */ |
Archit Taneja | a72b64b | 2011-05-12 17:26:26 +0530 | [diff] [blame] | 2176 | tclk_prepare = ns2ddr(dsidev, 65); |
Tomi Valkeinen | 3de7a1d | 2009-10-28 11:59:56 +0200 | [diff] [blame] | 2177 | |
| 2178 | /* min tclk-prepare + tclk-zero = 300ns */ |
Archit Taneja | a72b64b | 2011-05-12 17:26:26 +0530 | [diff] [blame] | 2179 | tclk_zero = ns2ddr(dsidev, 260); |
Tomi Valkeinen | 3de7a1d | 2009-10-28 11:59:56 +0200 | [diff] [blame] | 2180 | |
| 2181 | DSSDBG("ths_prepare %u (%uns), ths_prepare_ths_zero %u (%uns)\n", |
Archit Taneja | a72b64b | 2011-05-12 17:26:26 +0530 | [diff] [blame] | 2182 | ths_prepare, ddr2ns(dsidev, ths_prepare), |
| 2183 | ths_prepare_ths_zero, ddr2ns(dsidev, ths_prepare_ths_zero)); |
Tomi Valkeinen | 3de7a1d | 2009-10-28 11:59:56 +0200 | [diff] [blame] | 2184 | DSSDBG("ths_trail %u (%uns), ths_exit %u (%uns)\n", |
Archit Taneja | a72b64b | 2011-05-12 17:26:26 +0530 | [diff] [blame] | 2185 | ths_trail, ddr2ns(dsidev, ths_trail), |
| 2186 | ths_exit, ddr2ns(dsidev, ths_exit)); |
Tomi Valkeinen | 3de7a1d | 2009-10-28 11:59:56 +0200 | [diff] [blame] | 2187 | |
| 2188 | DSSDBG("tlpx_half %u (%uns), tclk_trail %u (%uns), " |
| 2189 | "tclk_zero %u (%uns)\n", |
Archit Taneja | a72b64b | 2011-05-12 17:26:26 +0530 | [diff] [blame] | 2190 | tlpx_half, ddr2ns(dsidev, tlpx_half), |
| 2191 | tclk_trail, ddr2ns(dsidev, tclk_trail), |
| 2192 | tclk_zero, ddr2ns(dsidev, tclk_zero)); |
Tomi Valkeinen | 3de7a1d | 2009-10-28 11:59:56 +0200 | [diff] [blame] | 2193 | DSSDBG("tclk_prepare %u (%uns)\n", |
Archit Taneja | a72b64b | 2011-05-12 17:26:26 +0530 | [diff] [blame] | 2194 | tclk_prepare, ddr2ns(dsidev, tclk_prepare)); |
Tomi Valkeinen | 3de7a1d | 2009-10-28 11:59:56 +0200 | [diff] [blame] | 2195 | |
| 2196 | /* program timings */ |
| 2197 | |
Archit Taneja | a72b64b | 2011-05-12 17:26:26 +0530 | [diff] [blame] | 2198 | r = dsi_read_reg(dsidev, DSI_DSIPHY_CFG0); |
Tomi Valkeinen | 3de7a1d | 2009-10-28 11:59:56 +0200 | [diff] [blame] | 2199 | r = FLD_MOD(r, ths_prepare, 31, 24); |
| 2200 | r = FLD_MOD(r, ths_prepare_ths_zero, 23, 16); |
| 2201 | r = FLD_MOD(r, ths_trail, 15, 8); |
| 2202 | r = FLD_MOD(r, ths_exit, 7, 0); |
Archit Taneja | a72b64b | 2011-05-12 17:26:26 +0530 | [diff] [blame] | 2203 | dsi_write_reg(dsidev, DSI_DSIPHY_CFG0, r); |
Tomi Valkeinen | 3de7a1d | 2009-10-28 11:59:56 +0200 | [diff] [blame] | 2204 | |
Archit Taneja | a72b64b | 2011-05-12 17:26:26 +0530 | [diff] [blame] | 2205 | r = dsi_read_reg(dsidev, DSI_DSIPHY_CFG1); |
Tomi Valkeinen | 3de7a1d | 2009-10-28 11:59:56 +0200 | [diff] [blame] | 2206 | r = FLD_MOD(r, tlpx_half, 22, 16); |
| 2207 | r = FLD_MOD(r, tclk_trail, 15, 8); |
| 2208 | r = FLD_MOD(r, tclk_zero, 7, 0); |
Archit Taneja | a72b64b | 2011-05-12 17:26:26 +0530 | [diff] [blame] | 2209 | dsi_write_reg(dsidev, DSI_DSIPHY_CFG1, r); |
Tomi Valkeinen | 3de7a1d | 2009-10-28 11:59:56 +0200 | [diff] [blame] | 2210 | |
Archit Taneja | a72b64b | 2011-05-12 17:26:26 +0530 | [diff] [blame] | 2211 | r = dsi_read_reg(dsidev, DSI_DSIPHY_CFG2); |
Tomi Valkeinen | 3de7a1d | 2009-10-28 11:59:56 +0200 | [diff] [blame] | 2212 | r = FLD_MOD(r, tclk_prepare, 7, 0); |
Archit Taneja | a72b64b | 2011-05-12 17:26:26 +0530 | [diff] [blame] | 2213 | dsi_write_reg(dsidev, DSI_DSIPHY_CFG2, r); |
Tomi Valkeinen | 3de7a1d | 2009-10-28 11:59:56 +0200 | [diff] [blame] | 2214 | } |
| 2215 | |
Tomi Valkeinen | cc5c185 | 2010-10-06 15:18:13 +0300 | [diff] [blame] | 2216 | static void dsi_cio_enable_lane_override(struct omap_dss_device *dssdev, |
Tomi Valkeinen | 0a0ee46 | 2010-07-27 11:11:48 +0300 | [diff] [blame] | 2217 | enum dsi_lane lanes) |
| 2218 | { |
Archit Taneja | a72b64b | 2011-05-12 17:26:26 +0530 | [diff] [blame] | 2219 | struct platform_device *dsidev = dsi_get_dsidev_from_dssdev(dssdev); |
Archit Taneja | 75d7247 | 2011-05-16 15:17:08 +0530 | [diff] [blame] | 2220 | struct dsi_data *dsi = dsi_get_dsidrv_data(dsidev); |
Tomi Valkeinen | 0a0ee46 | 2010-07-27 11:11:48 +0300 | [diff] [blame] | 2221 | int clk_lane = dssdev->phy.dsi.clk_lane; |
| 2222 | int data1_lane = dssdev->phy.dsi.data1_lane; |
| 2223 | int data2_lane = dssdev->phy.dsi.data2_lane; |
Archit Taneja | 75d7247 | 2011-05-16 15:17:08 +0530 | [diff] [blame] | 2224 | int data3_lane = dssdev->phy.dsi.data3_lane; |
| 2225 | int data4_lane = dssdev->phy.dsi.data4_lane; |
Tomi Valkeinen | 0a0ee46 | 2010-07-27 11:11:48 +0300 | [diff] [blame] | 2226 | int clk_pol = dssdev->phy.dsi.clk_pol; |
| 2227 | int data1_pol = dssdev->phy.dsi.data1_pol; |
| 2228 | int data2_pol = dssdev->phy.dsi.data2_pol; |
Archit Taneja | 75d7247 | 2011-05-16 15:17:08 +0530 | [diff] [blame] | 2229 | int data3_pol = dssdev->phy.dsi.data3_pol; |
| 2230 | int data4_pol = dssdev->phy.dsi.data4_pol; |
Tomi Valkeinen | 0a0ee46 | 2010-07-27 11:11:48 +0300 | [diff] [blame] | 2231 | |
| 2232 | u32 l = 0; |
Archit Taneja | 75d7247 | 2011-05-16 15:17:08 +0530 | [diff] [blame] | 2233 | u8 lptxscp_start = dsi->num_data_lanes == 2 ? 22 : 26; |
Tomi Valkeinen | 0a0ee46 | 2010-07-27 11:11:48 +0300 | [diff] [blame] | 2234 | |
| 2235 | if (lanes & DSI_CLK_P) |
| 2236 | l |= 1 << ((clk_lane - 1) * 2 + (clk_pol ? 0 : 1)); |
| 2237 | if (lanes & DSI_CLK_N) |
| 2238 | l |= 1 << ((clk_lane - 1) * 2 + (clk_pol ? 1 : 0)); |
| 2239 | |
| 2240 | if (lanes & DSI_DATA1_P) |
| 2241 | l |= 1 << ((data1_lane - 1) * 2 + (data1_pol ? 0 : 1)); |
| 2242 | if (lanes & DSI_DATA1_N) |
| 2243 | l |= 1 << ((data1_lane - 1) * 2 + (data1_pol ? 1 : 0)); |
| 2244 | |
| 2245 | if (lanes & DSI_DATA2_P) |
| 2246 | l |= 1 << ((data2_lane - 1) * 2 + (data2_pol ? 0 : 1)); |
| 2247 | if (lanes & DSI_DATA2_N) |
| 2248 | l |= 1 << ((data2_lane - 1) * 2 + (data2_pol ? 1 : 0)); |
| 2249 | |
Archit Taneja | 75d7247 | 2011-05-16 15:17:08 +0530 | [diff] [blame] | 2250 | if (lanes & DSI_DATA3_P) |
| 2251 | l |= 1 << ((data3_lane - 1) * 2 + (data3_pol ? 0 : 1)); |
| 2252 | if (lanes & DSI_DATA3_N) |
| 2253 | l |= 1 << ((data3_lane - 1) * 2 + (data3_pol ? 1 : 0)); |
| 2254 | |
| 2255 | if (lanes & DSI_DATA4_P) |
| 2256 | l |= 1 << ((data4_lane - 1) * 2 + (data4_pol ? 0 : 1)); |
| 2257 | if (lanes & DSI_DATA4_N) |
| 2258 | l |= 1 << ((data4_lane - 1) * 2 + (data4_pol ? 1 : 0)); |
Tomi Valkeinen | 0a0ee46 | 2010-07-27 11:11:48 +0300 | [diff] [blame] | 2259 | /* |
| 2260 | * Bits in REGLPTXSCPDAT4TO0DXDY: |
| 2261 | * 17: DY0 18: DX0 |
| 2262 | * 19: DY1 20: DX1 |
| 2263 | * 21: DY2 22: DX2 |
Archit Taneja | 75d7247 | 2011-05-16 15:17:08 +0530 | [diff] [blame] | 2264 | * 23: DY3 24: DX3 |
| 2265 | * 25: DY4 26: DX4 |
Tomi Valkeinen | 0a0ee46 | 2010-07-27 11:11:48 +0300 | [diff] [blame] | 2266 | */ |
| 2267 | |
| 2268 | /* Set the lane override configuration */ |
Archit Taneja | a72b64b | 2011-05-12 17:26:26 +0530 | [diff] [blame] | 2269 | |
| 2270 | /* REGLPTXSCPDAT4TO0DXDY */ |
Archit Taneja | 75d7247 | 2011-05-16 15:17:08 +0530 | [diff] [blame] | 2271 | REG_FLD_MOD(dsidev, DSI_DSIPHY_CFG10, l, lptxscp_start, 17); |
Tomi Valkeinen | 0a0ee46 | 2010-07-27 11:11:48 +0300 | [diff] [blame] | 2272 | |
| 2273 | /* Enable lane override */ |
Archit Taneja | a72b64b | 2011-05-12 17:26:26 +0530 | [diff] [blame] | 2274 | |
| 2275 | /* ENLPTXSCPDAT */ |
| 2276 | REG_FLD_MOD(dsidev, DSI_DSIPHY_CFG10, 1, 27, 27); |
Tomi Valkeinen | 0a0ee46 | 2010-07-27 11:11:48 +0300 | [diff] [blame] | 2277 | } |
| 2278 | |
Archit Taneja | a72b64b | 2011-05-12 17:26:26 +0530 | [diff] [blame] | 2279 | static void dsi_cio_disable_lane_override(struct platform_device *dsidev) |
Tomi Valkeinen | 0a0ee46 | 2010-07-27 11:11:48 +0300 | [diff] [blame] | 2280 | { |
| 2281 | /* Disable lane override */ |
Archit Taneja | a72b64b | 2011-05-12 17:26:26 +0530 | [diff] [blame] | 2282 | REG_FLD_MOD(dsidev, DSI_DSIPHY_CFG10, 0, 27, 27); /* ENLPTXSCPDAT */ |
Tomi Valkeinen | 0a0ee46 | 2010-07-27 11:11:48 +0300 | [diff] [blame] | 2283 | /* Reset the lane override configuration */ |
Archit Taneja | a72b64b | 2011-05-12 17:26:26 +0530 | [diff] [blame] | 2284 | /* REGLPTXSCPDAT4TO0DXDY */ |
| 2285 | REG_FLD_MOD(dsidev, DSI_DSIPHY_CFG10, 0, 22, 17); |
Tomi Valkeinen | 0a0ee46 | 2010-07-27 11:11:48 +0300 | [diff] [blame] | 2286 | } |
Tomi Valkeinen | 3de7a1d | 2009-10-28 11:59:56 +0200 | [diff] [blame] | 2287 | |
Tomi Valkeinen | 03329ac | 2010-10-07 13:59:22 +0300 | [diff] [blame] | 2288 | static int dsi_cio_wait_tx_clk_esc_reset(struct omap_dss_device *dssdev) |
| 2289 | { |
Archit Taneja | a72b64b | 2011-05-12 17:26:26 +0530 | [diff] [blame] | 2290 | struct platform_device *dsidev = dsi_get_dsidev_from_dssdev(dssdev); |
Tomi Valkeinen | 03329ac | 2010-10-07 13:59:22 +0300 | [diff] [blame] | 2291 | int t; |
| 2292 | int bits[3]; |
| 2293 | bool in_use[3]; |
| 2294 | |
| 2295 | if (dss_has_feature(FEAT_DSI_REVERSE_TXCLKESC)) { |
| 2296 | bits[0] = 28; |
| 2297 | bits[1] = 27; |
| 2298 | bits[2] = 26; |
| 2299 | } else { |
| 2300 | bits[0] = 24; |
| 2301 | bits[1] = 25; |
| 2302 | bits[2] = 26; |
| 2303 | } |
| 2304 | |
| 2305 | in_use[0] = false; |
| 2306 | in_use[1] = false; |
| 2307 | in_use[2] = false; |
| 2308 | |
| 2309 | if (dssdev->phy.dsi.clk_lane != 0) |
| 2310 | in_use[dssdev->phy.dsi.clk_lane - 1] = true; |
| 2311 | if (dssdev->phy.dsi.data1_lane != 0) |
| 2312 | in_use[dssdev->phy.dsi.data1_lane - 1] = true; |
| 2313 | if (dssdev->phy.dsi.data2_lane != 0) |
| 2314 | in_use[dssdev->phy.dsi.data2_lane - 1] = true; |
| 2315 | |
| 2316 | t = 100000; |
| 2317 | while (true) { |
| 2318 | u32 l; |
| 2319 | int i; |
| 2320 | int ok; |
| 2321 | |
Archit Taneja | a72b64b | 2011-05-12 17:26:26 +0530 | [diff] [blame] | 2322 | l = dsi_read_reg(dsidev, DSI_DSIPHY_CFG5); |
Tomi Valkeinen | 03329ac | 2010-10-07 13:59:22 +0300 | [diff] [blame] | 2323 | |
| 2324 | ok = 0; |
| 2325 | for (i = 0; i < 3; ++i) { |
| 2326 | if (!in_use[i] || (l & (1 << bits[i]))) |
| 2327 | ok++; |
| 2328 | } |
| 2329 | |
| 2330 | if (ok == 3) |
| 2331 | break; |
| 2332 | |
| 2333 | if (--t == 0) { |
| 2334 | for (i = 0; i < 3; ++i) { |
| 2335 | if (!in_use[i] || (l & (1 << bits[i]))) |
| 2336 | continue; |
| 2337 | |
| 2338 | DSSERR("CIO TXCLKESC%d domain not coming " \ |
| 2339 | "out of reset\n", i); |
| 2340 | } |
| 2341 | return -EIO; |
| 2342 | } |
| 2343 | } |
| 2344 | |
| 2345 | return 0; |
| 2346 | } |
| 2347 | |
Tomi Valkeinen | 5bc416c | 2011-06-15 15:21:12 +0300 | [diff] [blame] | 2348 | static unsigned dsi_get_lane_mask(struct omap_dss_device *dssdev) |
| 2349 | { |
| 2350 | unsigned lanes = 0; |
| 2351 | |
| 2352 | if (dssdev->phy.dsi.clk_lane != 0) |
| 2353 | lanes |= 1 << (dssdev->phy.dsi.clk_lane - 1); |
| 2354 | if (dssdev->phy.dsi.data1_lane != 0) |
| 2355 | lanes |= 1 << (dssdev->phy.dsi.data1_lane - 1); |
| 2356 | if (dssdev->phy.dsi.data2_lane != 0) |
| 2357 | lanes |= 1 << (dssdev->phy.dsi.data2_lane - 1); |
| 2358 | if (dssdev->phy.dsi.data3_lane != 0) |
| 2359 | lanes |= 1 << (dssdev->phy.dsi.data3_lane - 1); |
| 2360 | if (dssdev->phy.dsi.data4_lane != 0) |
| 2361 | lanes |= 1 << (dssdev->phy.dsi.data4_lane - 1); |
| 2362 | |
| 2363 | return lanes; |
| 2364 | } |
| 2365 | |
Tomi Valkeinen | cc5c185 | 2010-10-06 15:18:13 +0300 | [diff] [blame] | 2366 | static int dsi_cio_init(struct omap_dss_device *dssdev) |
Tomi Valkeinen | 3de7a1d | 2009-10-28 11:59:56 +0200 | [diff] [blame] | 2367 | { |
Archit Taneja | a72b64b | 2011-05-12 17:26:26 +0530 | [diff] [blame] | 2368 | struct platform_device *dsidev = dsi_get_dsidev_from_dssdev(dssdev); |
Archit Taneja | f1da39d | 2011-05-12 17:26:27 +0530 | [diff] [blame] | 2369 | struct dsi_data *dsi = dsi_get_dsidrv_data(dsidev); |
Tomi Valkeinen | 65c62bb | 2011-04-15 11:58:41 +0300 | [diff] [blame] | 2370 | int r; |
Archit Taneja | 75d7247 | 2011-05-16 15:17:08 +0530 | [diff] [blame] | 2371 | int num_data_lanes_dssdev = dsi_get_num_data_lanes_dssdev(dssdev); |
Tomi Valkeinen | 40885ab | 2010-07-28 15:53:38 +0300 | [diff] [blame] | 2372 | u32 l; |
Tomi Valkeinen | 3de7a1d | 2009-10-28 11:59:56 +0200 | [diff] [blame] | 2373 | |
Tomi Valkeinen | cc5c185 | 2010-10-06 15:18:13 +0300 | [diff] [blame] | 2374 | DSSDBGF(); |
Tomi Valkeinen | 3de7a1d | 2009-10-28 11:59:56 +0200 | [diff] [blame] | 2375 | |
Tomi Valkeinen | 5bc416c | 2011-06-15 15:21:12 +0300 | [diff] [blame] | 2376 | r = dsi->enable_pads(dsidev->id, dsi_get_lane_mask(dssdev)); |
| 2377 | if (r) |
| 2378 | return r; |
Tomi Valkeinen | d1f5857 | 2010-07-30 11:57:57 +0300 | [diff] [blame] | 2379 | |
Archit Taneja | a72b64b | 2011-05-12 17:26:26 +0530 | [diff] [blame] | 2380 | dsi_enable_scp_clk(dsidev); |
Tomi Valkeinen | 40885ab | 2010-07-28 15:53:38 +0300 | [diff] [blame] | 2381 | |
Tomi Valkeinen | 3de7a1d | 2009-10-28 11:59:56 +0200 | [diff] [blame] | 2382 | /* A dummy read using the SCP interface to any DSIPHY register is |
| 2383 | * required after DSIPHY reset to complete the reset of the DSI complex |
| 2384 | * I/O. */ |
Archit Taneja | a72b64b | 2011-05-12 17:26:26 +0530 | [diff] [blame] | 2385 | dsi_read_reg(dsidev, DSI_DSIPHY_CFG5); |
Tomi Valkeinen | 3de7a1d | 2009-10-28 11:59:56 +0200 | [diff] [blame] | 2386 | |
Archit Taneja | a72b64b | 2011-05-12 17:26:26 +0530 | [diff] [blame] | 2387 | if (wait_for_bit_change(dsidev, DSI_DSIPHY_CFG5, 30, 1) != 1) { |
Tomi Valkeinen | 65c62bb | 2011-04-15 11:58:41 +0300 | [diff] [blame] | 2388 | DSSERR("CIO SCP Clock domain not coming out of reset.\n"); |
| 2389 | r = -EIO; |
| 2390 | goto err_scp_clk_dom; |
Tomi Valkeinen | 3de7a1d | 2009-10-28 11:59:56 +0200 | [diff] [blame] | 2391 | } |
| 2392 | |
Tomi Valkeinen | cc5c185 | 2010-10-06 15:18:13 +0300 | [diff] [blame] | 2393 | dsi_set_lane_config(dssdev); |
Tomi Valkeinen | 3de7a1d | 2009-10-28 11:59:56 +0200 | [diff] [blame] | 2394 | |
Tomi Valkeinen | 40885ab | 2010-07-28 15:53:38 +0300 | [diff] [blame] | 2395 | /* set TX STOP MODE timer to maximum for this operation */ |
Archit Taneja | a72b64b | 2011-05-12 17:26:26 +0530 | [diff] [blame] | 2396 | l = dsi_read_reg(dsidev, DSI_TIMING1); |
Tomi Valkeinen | 40885ab | 2010-07-28 15:53:38 +0300 | [diff] [blame] | 2397 | l = FLD_MOD(l, 1, 15, 15); /* FORCE_TX_STOP_MODE_IO */ |
| 2398 | l = FLD_MOD(l, 1, 14, 14); /* STOP_STATE_X16_IO */ |
| 2399 | l = FLD_MOD(l, 1, 13, 13); /* STOP_STATE_X4_IO */ |
| 2400 | l = FLD_MOD(l, 0x1fff, 12, 0); /* STOP_STATE_COUNTER_IO */ |
Archit Taneja | a72b64b | 2011-05-12 17:26:26 +0530 | [diff] [blame] | 2401 | dsi_write_reg(dsidev, DSI_TIMING1, l); |
Tomi Valkeinen | 40885ab | 2010-07-28 15:53:38 +0300 | [diff] [blame] | 2402 | |
Archit Taneja | f1da39d | 2011-05-12 17:26:27 +0530 | [diff] [blame] | 2403 | if (dsi->ulps_enabled) { |
Archit Taneja | 75d7247 | 2011-05-16 15:17:08 +0530 | [diff] [blame] | 2404 | u32 lane_mask = DSI_CLK_P | DSI_DATA1_P | DSI_DATA2_P; |
| 2405 | |
Tomi Valkeinen | 65c62bb | 2011-04-15 11:58:41 +0300 | [diff] [blame] | 2406 | DSSDBG("manual ulps exit\n"); |
| 2407 | |
Tomi Valkeinen | 40885ab | 2010-07-28 15:53:38 +0300 | [diff] [blame] | 2408 | /* ULPS is exited by Mark-1 state for 1ms, followed by |
| 2409 | * stop state. DSS HW cannot do this via the normal |
| 2410 | * ULPS exit sequence, as after reset the DSS HW thinks |
| 2411 | * that we are not in ULPS mode, and refuses to send the |
| 2412 | * sequence. So we need to send the ULPS exit sequence |
| 2413 | * manually. |
| 2414 | */ |
| 2415 | |
Archit Taneja | 75d7247 | 2011-05-16 15:17:08 +0530 | [diff] [blame] | 2416 | if (num_data_lanes_dssdev > 2) |
| 2417 | lane_mask |= DSI_DATA3_P; |
| 2418 | |
| 2419 | if (num_data_lanes_dssdev > 3) |
| 2420 | lane_mask |= DSI_DATA4_P; |
| 2421 | |
| 2422 | dsi_cio_enable_lane_override(dssdev, lane_mask); |
Tomi Valkeinen | 40885ab | 2010-07-28 15:53:38 +0300 | [diff] [blame] | 2423 | } |
| 2424 | |
Archit Taneja | a72b64b | 2011-05-12 17:26:26 +0530 | [diff] [blame] | 2425 | r = dsi_cio_power(dsidev, DSI_COMPLEXIO_POWER_ON); |
Tomi Valkeinen | 3de7a1d | 2009-10-28 11:59:56 +0200 | [diff] [blame] | 2426 | if (r) |
Tomi Valkeinen | 65c62bb | 2011-04-15 11:58:41 +0300 | [diff] [blame] | 2427 | goto err_cio_pwr; |
| 2428 | |
Archit Taneja | a72b64b | 2011-05-12 17:26:26 +0530 | [diff] [blame] | 2429 | if (wait_for_bit_change(dsidev, DSI_COMPLEXIO_CFG1, 29, 1) != 1) { |
Tomi Valkeinen | 65c62bb | 2011-04-15 11:58:41 +0300 | [diff] [blame] | 2430 | DSSERR("CIO PWR clock domain not coming out of reset.\n"); |
| 2431 | r = -ENODEV; |
| 2432 | goto err_cio_pwr_dom; |
| 2433 | } |
| 2434 | |
Archit Taneja | a72b64b | 2011-05-12 17:26:26 +0530 | [diff] [blame] | 2435 | dsi_if_enable(dsidev, true); |
| 2436 | dsi_if_enable(dsidev, false); |
| 2437 | REG_FLD_MOD(dsidev, DSI_CLK_CTRL, 1, 20, 20); /* LP_CLK_ENABLE */ |
Tomi Valkeinen | 3de7a1d | 2009-10-28 11:59:56 +0200 | [diff] [blame] | 2438 | |
Tomi Valkeinen | 03329ac | 2010-10-07 13:59:22 +0300 | [diff] [blame] | 2439 | r = dsi_cio_wait_tx_clk_esc_reset(dssdev); |
| 2440 | if (r) |
| 2441 | goto err_tx_clk_esc_rst; |
| 2442 | |
Archit Taneja | f1da39d | 2011-05-12 17:26:27 +0530 | [diff] [blame] | 2443 | if (dsi->ulps_enabled) { |
Tomi Valkeinen | 40885ab | 2010-07-28 15:53:38 +0300 | [diff] [blame] | 2444 | /* Keep Mark-1 state for 1ms (as per DSI spec) */ |
| 2445 | ktime_t wait = ns_to_ktime(1000 * 1000); |
| 2446 | set_current_state(TASK_UNINTERRUPTIBLE); |
| 2447 | schedule_hrtimeout(&wait, HRTIMER_MODE_REL); |
| 2448 | |
| 2449 | /* Disable the override. The lanes should be set to Mark-11 |
| 2450 | * state by the HW */ |
Archit Taneja | a72b64b | 2011-05-12 17:26:26 +0530 | [diff] [blame] | 2451 | dsi_cio_disable_lane_override(dsidev); |
Tomi Valkeinen | 40885ab | 2010-07-28 15:53:38 +0300 | [diff] [blame] | 2452 | } |
| 2453 | |
| 2454 | /* FORCE_TX_STOP_MODE_IO */ |
Archit Taneja | a72b64b | 2011-05-12 17:26:26 +0530 | [diff] [blame] | 2455 | REG_FLD_MOD(dsidev, DSI_TIMING1, 0, 15, 15); |
Tomi Valkeinen | 40885ab | 2010-07-28 15:53:38 +0300 | [diff] [blame] | 2456 | |
Archit Taneja | a72b64b | 2011-05-12 17:26:26 +0530 | [diff] [blame] | 2457 | dsi_cio_timings(dsidev); |
Tomi Valkeinen | 3de7a1d | 2009-10-28 11:59:56 +0200 | [diff] [blame] | 2458 | |
Archit Taneja | f1da39d | 2011-05-12 17:26:27 +0530 | [diff] [blame] | 2459 | dsi->ulps_enabled = false; |
Tomi Valkeinen | 3de7a1d | 2009-10-28 11:59:56 +0200 | [diff] [blame] | 2460 | |
| 2461 | DSSDBG("CIO init done\n"); |
Tomi Valkeinen | 65c62bb | 2011-04-15 11:58:41 +0300 | [diff] [blame] | 2462 | |
| 2463 | return 0; |
| 2464 | |
Tomi Valkeinen | 03329ac | 2010-10-07 13:59:22 +0300 | [diff] [blame] | 2465 | err_tx_clk_esc_rst: |
Archit Taneja | a72b64b | 2011-05-12 17:26:26 +0530 | [diff] [blame] | 2466 | REG_FLD_MOD(dsidev, DSI_CLK_CTRL, 0, 20, 20); /* LP_CLK_ENABLE */ |
Tomi Valkeinen | 65c62bb | 2011-04-15 11:58:41 +0300 | [diff] [blame] | 2467 | err_cio_pwr_dom: |
Archit Taneja | a72b64b | 2011-05-12 17:26:26 +0530 | [diff] [blame] | 2468 | dsi_cio_power(dsidev, DSI_COMPLEXIO_POWER_OFF); |
Tomi Valkeinen | 65c62bb | 2011-04-15 11:58:41 +0300 | [diff] [blame] | 2469 | err_cio_pwr: |
Archit Taneja | f1da39d | 2011-05-12 17:26:27 +0530 | [diff] [blame] | 2470 | if (dsi->ulps_enabled) |
Archit Taneja | a72b64b | 2011-05-12 17:26:26 +0530 | [diff] [blame] | 2471 | dsi_cio_disable_lane_override(dsidev); |
Tomi Valkeinen | 65c62bb | 2011-04-15 11:58:41 +0300 | [diff] [blame] | 2472 | err_scp_clk_dom: |
Archit Taneja | a72b64b | 2011-05-12 17:26:26 +0530 | [diff] [blame] | 2473 | dsi_disable_scp_clk(dsidev); |
Tomi Valkeinen | 5bc416c | 2011-06-15 15:21:12 +0300 | [diff] [blame] | 2474 | dsi->disable_pads(dsidev->id, dsi_get_lane_mask(dssdev)); |
Tomi Valkeinen | 3de7a1d | 2009-10-28 11:59:56 +0200 | [diff] [blame] | 2475 | return r; |
| 2476 | } |
| 2477 | |
Tomi Valkeinen | 5bc416c | 2011-06-15 15:21:12 +0300 | [diff] [blame] | 2478 | static void dsi_cio_uninit(struct omap_dss_device *dssdev) |
Tomi Valkeinen | 3de7a1d | 2009-10-28 11:59:56 +0200 | [diff] [blame] | 2479 | { |
Tomi Valkeinen | 5bc416c | 2011-06-15 15:21:12 +0300 | [diff] [blame] | 2480 | struct platform_device *dsidev = dsi_get_dsidev_from_dssdev(dssdev); |
Archit Taneja | f1da39d | 2011-05-12 17:26:27 +0530 | [diff] [blame] | 2481 | struct dsi_data *dsi = dsi_get_dsidrv_data(dsidev); |
| 2482 | |
Archit Taneja | a72b64b | 2011-05-12 17:26:26 +0530 | [diff] [blame] | 2483 | dsi_cio_power(dsidev, DSI_COMPLEXIO_POWER_OFF); |
| 2484 | dsi_disable_scp_clk(dsidev); |
Tomi Valkeinen | 5bc416c | 2011-06-15 15:21:12 +0300 | [diff] [blame] | 2485 | dsi->disable_pads(dsidev->id, dsi_get_lane_mask(dssdev)); |
Tomi Valkeinen | 3de7a1d | 2009-10-28 11:59:56 +0200 | [diff] [blame] | 2486 | } |
| 2487 | |
Archit Taneja | a72b64b | 2011-05-12 17:26:26 +0530 | [diff] [blame] | 2488 | static void dsi_config_tx_fifo(struct platform_device *dsidev, |
| 2489 | enum fifo_size size1, enum fifo_size size2, |
Tomi Valkeinen | 3de7a1d | 2009-10-28 11:59:56 +0200 | [diff] [blame] | 2490 | enum fifo_size size3, enum fifo_size size4) |
| 2491 | { |
Archit Taneja | f1da39d | 2011-05-12 17:26:27 +0530 | [diff] [blame] | 2492 | struct dsi_data *dsi = dsi_get_dsidrv_data(dsidev); |
Tomi Valkeinen | 3de7a1d | 2009-10-28 11:59:56 +0200 | [diff] [blame] | 2493 | u32 r = 0; |
| 2494 | int add = 0; |
| 2495 | int i; |
| 2496 | |
Archit Taneja | f1da39d | 2011-05-12 17:26:27 +0530 | [diff] [blame] | 2497 | dsi->vc[0].fifo_size = size1; |
| 2498 | dsi->vc[1].fifo_size = size2; |
| 2499 | dsi->vc[2].fifo_size = size3; |
| 2500 | dsi->vc[3].fifo_size = size4; |
Tomi Valkeinen | 3de7a1d | 2009-10-28 11:59:56 +0200 | [diff] [blame] | 2501 | |
| 2502 | for (i = 0; i < 4; i++) { |
| 2503 | u8 v; |
Archit Taneja | f1da39d | 2011-05-12 17:26:27 +0530 | [diff] [blame] | 2504 | int size = dsi->vc[i].fifo_size; |
Tomi Valkeinen | 3de7a1d | 2009-10-28 11:59:56 +0200 | [diff] [blame] | 2505 | |
| 2506 | if (add + size > 4) { |
| 2507 | DSSERR("Illegal FIFO configuration\n"); |
| 2508 | BUG(); |
| 2509 | } |
| 2510 | |
| 2511 | v = FLD_VAL(add, 2, 0) | FLD_VAL(size, 7, 4); |
| 2512 | r |= v << (8 * i); |
| 2513 | /*DSSDBG("TX FIFO vc %d: size %d, add %d\n", i, size, add); */ |
| 2514 | add += size; |
| 2515 | } |
| 2516 | |
Archit Taneja | a72b64b | 2011-05-12 17:26:26 +0530 | [diff] [blame] | 2517 | dsi_write_reg(dsidev, DSI_TX_FIFO_VC_SIZE, r); |
Tomi Valkeinen | 3de7a1d | 2009-10-28 11:59:56 +0200 | [diff] [blame] | 2518 | } |
| 2519 | |
Archit Taneja | a72b64b | 2011-05-12 17:26:26 +0530 | [diff] [blame] | 2520 | static void dsi_config_rx_fifo(struct platform_device *dsidev, |
| 2521 | enum fifo_size size1, enum fifo_size size2, |
Tomi Valkeinen | 3de7a1d | 2009-10-28 11:59:56 +0200 | [diff] [blame] | 2522 | enum fifo_size size3, enum fifo_size size4) |
| 2523 | { |
Archit Taneja | f1da39d | 2011-05-12 17:26:27 +0530 | [diff] [blame] | 2524 | struct dsi_data *dsi = dsi_get_dsidrv_data(dsidev); |
Tomi Valkeinen | 3de7a1d | 2009-10-28 11:59:56 +0200 | [diff] [blame] | 2525 | u32 r = 0; |
| 2526 | int add = 0; |
| 2527 | int i; |
| 2528 | |
Archit Taneja | f1da39d | 2011-05-12 17:26:27 +0530 | [diff] [blame] | 2529 | dsi->vc[0].fifo_size = size1; |
| 2530 | dsi->vc[1].fifo_size = size2; |
| 2531 | dsi->vc[2].fifo_size = size3; |
| 2532 | dsi->vc[3].fifo_size = size4; |
Tomi Valkeinen | 3de7a1d | 2009-10-28 11:59:56 +0200 | [diff] [blame] | 2533 | |
| 2534 | for (i = 0; i < 4; i++) { |
| 2535 | u8 v; |
Archit Taneja | f1da39d | 2011-05-12 17:26:27 +0530 | [diff] [blame] | 2536 | int size = dsi->vc[i].fifo_size; |
Tomi Valkeinen | 3de7a1d | 2009-10-28 11:59:56 +0200 | [diff] [blame] | 2537 | |
| 2538 | if (add + size > 4) { |
| 2539 | DSSERR("Illegal FIFO configuration\n"); |
| 2540 | BUG(); |
| 2541 | } |
| 2542 | |
| 2543 | v = FLD_VAL(add, 2, 0) | FLD_VAL(size, 7, 4); |
| 2544 | r |= v << (8 * i); |
| 2545 | /*DSSDBG("RX FIFO vc %d: size %d, add %d\n", i, size, add); */ |
| 2546 | add += size; |
| 2547 | } |
| 2548 | |
Archit Taneja | a72b64b | 2011-05-12 17:26:26 +0530 | [diff] [blame] | 2549 | dsi_write_reg(dsidev, DSI_RX_FIFO_VC_SIZE, r); |
Tomi Valkeinen | 3de7a1d | 2009-10-28 11:59:56 +0200 | [diff] [blame] | 2550 | } |
| 2551 | |
Archit Taneja | a72b64b | 2011-05-12 17:26:26 +0530 | [diff] [blame] | 2552 | static int dsi_force_tx_stop_mode_io(struct platform_device *dsidev) |
Tomi Valkeinen | 3de7a1d | 2009-10-28 11:59:56 +0200 | [diff] [blame] | 2553 | { |
| 2554 | u32 r; |
| 2555 | |
Archit Taneja | a72b64b | 2011-05-12 17:26:26 +0530 | [diff] [blame] | 2556 | r = dsi_read_reg(dsidev, DSI_TIMING1); |
Tomi Valkeinen | 3de7a1d | 2009-10-28 11:59:56 +0200 | [diff] [blame] | 2557 | r = FLD_MOD(r, 1, 15, 15); /* FORCE_TX_STOP_MODE_IO */ |
Archit Taneja | a72b64b | 2011-05-12 17:26:26 +0530 | [diff] [blame] | 2558 | dsi_write_reg(dsidev, DSI_TIMING1, r); |
Tomi Valkeinen | 3de7a1d | 2009-10-28 11:59:56 +0200 | [diff] [blame] | 2559 | |
Archit Taneja | a72b64b | 2011-05-12 17:26:26 +0530 | [diff] [blame] | 2560 | if (wait_for_bit_change(dsidev, DSI_TIMING1, 15, 0) != 0) { |
Tomi Valkeinen | 3de7a1d | 2009-10-28 11:59:56 +0200 | [diff] [blame] | 2561 | DSSERR("TX_STOP bit not going down\n"); |
| 2562 | return -EIO; |
| 2563 | } |
| 2564 | |
| 2565 | return 0; |
| 2566 | } |
| 2567 | |
Archit Taneja | a72b64b | 2011-05-12 17:26:26 +0530 | [diff] [blame] | 2568 | static bool dsi_vc_is_enabled(struct platform_device *dsidev, int channel) |
Archit Taneja | cf398fb | 2011-03-23 09:59:34 +0000 | [diff] [blame] | 2569 | { |
Archit Taneja | a72b64b | 2011-05-12 17:26:26 +0530 | [diff] [blame] | 2570 | return REG_GET(dsidev, DSI_VC_CTRL(channel), 0, 0); |
Archit Taneja | cf398fb | 2011-03-23 09:59:34 +0000 | [diff] [blame] | 2571 | } |
| 2572 | |
| 2573 | static void dsi_packet_sent_handler_vp(void *data, u32 mask) |
| 2574 | { |
Archit Taneja | 2e868db | 2011-05-12 17:26:28 +0530 | [diff] [blame] | 2575 | struct dsi_packet_sent_handler_data *vp_data = |
| 2576 | (struct dsi_packet_sent_handler_data *) data; |
| 2577 | struct dsi_data *dsi = dsi_get_dsidrv_data(vp_data->dsidev); |
Archit Taneja | f1da39d | 2011-05-12 17:26:27 +0530 | [diff] [blame] | 2578 | const int channel = dsi->update_channel; |
| 2579 | u8 bit = dsi->te_enabled ? 30 : 31; |
Archit Taneja | cf398fb | 2011-03-23 09:59:34 +0000 | [diff] [blame] | 2580 | |
Archit Taneja | 2e868db | 2011-05-12 17:26:28 +0530 | [diff] [blame] | 2581 | if (REG_GET(vp_data->dsidev, DSI_VC_TE(channel), bit, bit) == 0) |
| 2582 | complete(vp_data->completion); |
Archit Taneja | cf398fb | 2011-03-23 09:59:34 +0000 | [diff] [blame] | 2583 | } |
| 2584 | |
Archit Taneja | a72b64b | 2011-05-12 17:26:26 +0530 | [diff] [blame] | 2585 | static int dsi_sync_vc_vp(struct platform_device *dsidev, int channel) |
Archit Taneja | cf398fb | 2011-03-23 09:59:34 +0000 | [diff] [blame] | 2586 | { |
Archit Taneja | f1da39d | 2011-05-12 17:26:27 +0530 | [diff] [blame] | 2587 | struct dsi_data *dsi = dsi_get_dsidrv_data(dsidev); |
Archit Taneja | 2e868db | 2011-05-12 17:26:28 +0530 | [diff] [blame] | 2588 | DECLARE_COMPLETION_ONSTACK(completion); |
| 2589 | struct dsi_packet_sent_handler_data vp_data = { dsidev, &completion }; |
Archit Taneja | cf398fb | 2011-03-23 09:59:34 +0000 | [diff] [blame] | 2590 | int r = 0; |
| 2591 | u8 bit; |
| 2592 | |
Archit Taneja | f1da39d | 2011-05-12 17:26:27 +0530 | [diff] [blame] | 2593 | bit = dsi->te_enabled ? 30 : 31; |
Archit Taneja | cf398fb | 2011-03-23 09:59:34 +0000 | [diff] [blame] | 2594 | |
Archit Taneja | a72b64b | 2011-05-12 17:26:26 +0530 | [diff] [blame] | 2595 | r = dsi_register_isr_vc(dsidev, channel, dsi_packet_sent_handler_vp, |
Archit Taneja | 2e868db | 2011-05-12 17:26:28 +0530 | [diff] [blame] | 2596 | &vp_data, DSI_VC_IRQ_PACKET_SENT); |
Archit Taneja | cf398fb | 2011-03-23 09:59:34 +0000 | [diff] [blame] | 2597 | if (r) |
| 2598 | goto err0; |
| 2599 | |
| 2600 | /* Wait for completion only if TE_EN/TE_START is still set */ |
Archit Taneja | a72b64b | 2011-05-12 17:26:26 +0530 | [diff] [blame] | 2601 | if (REG_GET(dsidev, DSI_VC_TE(channel), bit, bit)) { |
Archit Taneja | cf398fb | 2011-03-23 09:59:34 +0000 | [diff] [blame] | 2602 | if (wait_for_completion_timeout(&completion, |
| 2603 | msecs_to_jiffies(10)) == 0) { |
| 2604 | DSSERR("Failed to complete previous frame transfer\n"); |
| 2605 | r = -EIO; |
| 2606 | goto err1; |
| 2607 | } |
| 2608 | } |
| 2609 | |
Archit Taneja | a72b64b | 2011-05-12 17:26:26 +0530 | [diff] [blame] | 2610 | dsi_unregister_isr_vc(dsidev, channel, dsi_packet_sent_handler_vp, |
Archit Taneja | 2e868db | 2011-05-12 17:26:28 +0530 | [diff] [blame] | 2611 | &vp_data, DSI_VC_IRQ_PACKET_SENT); |
Archit Taneja | cf398fb | 2011-03-23 09:59:34 +0000 | [diff] [blame] | 2612 | |
| 2613 | return 0; |
| 2614 | err1: |
Archit Taneja | a72b64b | 2011-05-12 17:26:26 +0530 | [diff] [blame] | 2615 | dsi_unregister_isr_vc(dsidev, channel, dsi_packet_sent_handler_vp, |
Archit Taneja | 2e868db | 2011-05-12 17:26:28 +0530 | [diff] [blame] | 2616 | &vp_data, DSI_VC_IRQ_PACKET_SENT); |
Archit Taneja | cf398fb | 2011-03-23 09:59:34 +0000 | [diff] [blame] | 2617 | err0: |
| 2618 | return r; |
| 2619 | } |
| 2620 | |
| 2621 | static void dsi_packet_sent_handler_l4(void *data, u32 mask) |
| 2622 | { |
Archit Taneja | 2e868db | 2011-05-12 17:26:28 +0530 | [diff] [blame] | 2623 | struct dsi_packet_sent_handler_data *l4_data = |
| 2624 | (struct dsi_packet_sent_handler_data *) data; |
| 2625 | struct dsi_data *dsi = dsi_get_dsidrv_data(l4_data->dsidev); |
Archit Taneja | f1da39d | 2011-05-12 17:26:27 +0530 | [diff] [blame] | 2626 | const int channel = dsi->update_channel; |
Archit Taneja | cf398fb | 2011-03-23 09:59:34 +0000 | [diff] [blame] | 2627 | |
Archit Taneja | 2e868db | 2011-05-12 17:26:28 +0530 | [diff] [blame] | 2628 | if (REG_GET(l4_data->dsidev, DSI_VC_CTRL(channel), 5, 5) == 0) |
| 2629 | complete(l4_data->completion); |
Archit Taneja | cf398fb | 2011-03-23 09:59:34 +0000 | [diff] [blame] | 2630 | } |
| 2631 | |
Archit Taneja | a72b64b | 2011-05-12 17:26:26 +0530 | [diff] [blame] | 2632 | static int dsi_sync_vc_l4(struct platform_device *dsidev, int channel) |
Archit Taneja | cf398fb | 2011-03-23 09:59:34 +0000 | [diff] [blame] | 2633 | { |
Archit Taneja | 2e868db | 2011-05-12 17:26:28 +0530 | [diff] [blame] | 2634 | DECLARE_COMPLETION_ONSTACK(completion); |
| 2635 | struct dsi_packet_sent_handler_data l4_data = { dsidev, &completion }; |
Archit Taneja | cf398fb | 2011-03-23 09:59:34 +0000 | [diff] [blame] | 2636 | int r = 0; |
| 2637 | |
Archit Taneja | a72b64b | 2011-05-12 17:26:26 +0530 | [diff] [blame] | 2638 | r = dsi_register_isr_vc(dsidev, channel, dsi_packet_sent_handler_l4, |
Archit Taneja | 2e868db | 2011-05-12 17:26:28 +0530 | [diff] [blame] | 2639 | &l4_data, DSI_VC_IRQ_PACKET_SENT); |
Archit Taneja | cf398fb | 2011-03-23 09:59:34 +0000 | [diff] [blame] | 2640 | if (r) |
| 2641 | goto err0; |
| 2642 | |
| 2643 | /* Wait for completion only if TX_FIFO_NOT_EMPTY is still set */ |
Archit Taneja | a72b64b | 2011-05-12 17:26:26 +0530 | [diff] [blame] | 2644 | if (REG_GET(dsidev, DSI_VC_CTRL(channel), 5, 5)) { |
Archit Taneja | cf398fb | 2011-03-23 09:59:34 +0000 | [diff] [blame] | 2645 | if (wait_for_completion_timeout(&completion, |
| 2646 | msecs_to_jiffies(10)) == 0) { |
| 2647 | DSSERR("Failed to complete previous l4 transfer\n"); |
| 2648 | r = -EIO; |
| 2649 | goto err1; |
| 2650 | } |
| 2651 | } |
| 2652 | |
Archit Taneja | a72b64b | 2011-05-12 17:26:26 +0530 | [diff] [blame] | 2653 | dsi_unregister_isr_vc(dsidev, channel, dsi_packet_sent_handler_l4, |
Archit Taneja | 2e868db | 2011-05-12 17:26:28 +0530 | [diff] [blame] | 2654 | &l4_data, DSI_VC_IRQ_PACKET_SENT); |
Archit Taneja | cf398fb | 2011-03-23 09:59:34 +0000 | [diff] [blame] | 2655 | |
| 2656 | return 0; |
| 2657 | err1: |
Archit Taneja | a72b64b | 2011-05-12 17:26:26 +0530 | [diff] [blame] | 2658 | dsi_unregister_isr_vc(dsidev, channel, dsi_packet_sent_handler_l4, |
Archit Taneja | 2e868db | 2011-05-12 17:26:28 +0530 | [diff] [blame] | 2659 | &l4_data, DSI_VC_IRQ_PACKET_SENT); |
Archit Taneja | cf398fb | 2011-03-23 09:59:34 +0000 | [diff] [blame] | 2660 | err0: |
| 2661 | return r; |
| 2662 | } |
| 2663 | |
Archit Taneja | a72b64b | 2011-05-12 17:26:26 +0530 | [diff] [blame] | 2664 | static int dsi_sync_vc(struct platform_device *dsidev, int channel) |
Archit Taneja | cf398fb | 2011-03-23 09:59:34 +0000 | [diff] [blame] | 2665 | { |
Archit Taneja | f1da39d | 2011-05-12 17:26:27 +0530 | [diff] [blame] | 2666 | struct dsi_data *dsi = dsi_get_dsidrv_data(dsidev); |
| 2667 | |
Archit Taneja | a72b64b | 2011-05-12 17:26:26 +0530 | [diff] [blame] | 2668 | WARN_ON(!dsi_bus_is_locked(dsidev)); |
Archit Taneja | cf398fb | 2011-03-23 09:59:34 +0000 | [diff] [blame] | 2669 | |
| 2670 | WARN_ON(in_interrupt()); |
| 2671 | |
Archit Taneja | a72b64b | 2011-05-12 17:26:26 +0530 | [diff] [blame] | 2672 | if (!dsi_vc_is_enabled(dsidev, channel)) |
Archit Taneja | cf398fb | 2011-03-23 09:59:34 +0000 | [diff] [blame] | 2673 | return 0; |
| 2674 | |
Archit Taneja | d604914 | 2011-08-22 11:58:08 +0530 | [diff] [blame] | 2675 | switch (dsi->vc[channel].source) { |
| 2676 | case DSI_VC_SOURCE_VP: |
Archit Taneja | a72b64b | 2011-05-12 17:26:26 +0530 | [diff] [blame] | 2677 | return dsi_sync_vc_vp(dsidev, channel); |
Archit Taneja | d604914 | 2011-08-22 11:58:08 +0530 | [diff] [blame] | 2678 | case DSI_VC_SOURCE_L4: |
Archit Taneja | a72b64b | 2011-05-12 17:26:26 +0530 | [diff] [blame] | 2679 | return dsi_sync_vc_l4(dsidev, channel); |
Archit Taneja | cf398fb | 2011-03-23 09:59:34 +0000 | [diff] [blame] | 2680 | default: |
| 2681 | BUG(); |
| 2682 | } |
| 2683 | } |
| 2684 | |
Archit Taneja | a72b64b | 2011-05-12 17:26:26 +0530 | [diff] [blame] | 2685 | static int dsi_vc_enable(struct platform_device *dsidev, int channel, |
| 2686 | bool enable) |
Tomi Valkeinen | 3de7a1d | 2009-10-28 11:59:56 +0200 | [diff] [blame] | 2687 | { |
Tomi Valkeinen | 446f7bf | 2010-01-11 16:12:31 +0200 | [diff] [blame] | 2688 | DSSDBG("dsi_vc_enable channel %d, enable %d\n", |
| 2689 | channel, enable); |
Tomi Valkeinen | 3de7a1d | 2009-10-28 11:59:56 +0200 | [diff] [blame] | 2690 | |
| 2691 | enable = enable ? 1 : 0; |
| 2692 | |
Archit Taneja | a72b64b | 2011-05-12 17:26:26 +0530 | [diff] [blame] | 2693 | REG_FLD_MOD(dsidev, DSI_VC_CTRL(channel), enable, 0, 0); |
Tomi Valkeinen | 3de7a1d | 2009-10-28 11:59:56 +0200 | [diff] [blame] | 2694 | |
Archit Taneja | a72b64b | 2011-05-12 17:26:26 +0530 | [diff] [blame] | 2695 | if (wait_for_bit_change(dsidev, DSI_VC_CTRL(channel), |
| 2696 | 0, enable) != enable) { |
Tomi Valkeinen | 3de7a1d | 2009-10-28 11:59:56 +0200 | [diff] [blame] | 2697 | DSSERR("Failed to set dsi_vc_enable to %d\n", enable); |
| 2698 | return -EIO; |
| 2699 | } |
| 2700 | |
| 2701 | return 0; |
| 2702 | } |
| 2703 | |
Archit Taneja | a72b64b | 2011-05-12 17:26:26 +0530 | [diff] [blame] | 2704 | static void dsi_vc_initial_config(struct platform_device *dsidev, int channel) |
Tomi Valkeinen | 3de7a1d | 2009-10-28 11:59:56 +0200 | [diff] [blame] | 2705 | { |
| 2706 | u32 r; |
| 2707 | |
| 2708 | DSSDBGF("%d", channel); |
| 2709 | |
Archit Taneja | a72b64b | 2011-05-12 17:26:26 +0530 | [diff] [blame] | 2710 | r = dsi_read_reg(dsidev, DSI_VC_CTRL(channel)); |
Tomi Valkeinen | 3de7a1d | 2009-10-28 11:59:56 +0200 | [diff] [blame] | 2711 | |
| 2712 | if (FLD_GET(r, 15, 15)) /* VC_BUSY */ |
| 2713 | DSSERR("VC(%d) busy when trying to configure it!\n", |
| 2714 | channel); |
| 2715 | |
| 2716 | r = FLD_MOD(r, 0, 1, 1); /* SOURCE, 0 = L4 */ |
| 2717 | r = FLD_MOD(r, 0, 2, 2); /* BTA_SHORT_EN */ |
| 2718 | r = FLD_MOD(r, 0, 3, 3); /* BTA_LONG_EN */ |
| 2719 | r = FLD_MOD(r, 0, 4, 4); /* MODE, 0 = command */ |
| 2720 | r = FLD_MOD(r, 1, 7, 7); /* CS_TX_EN */ |
| 2721 | r = FLD_MOD(r, 1, 8, 8); /* ECC_TX_EN */ |
| 2722 | r = FLD_MOD(r, 0, 9, 9); /* MODE_SPEED, high speed on/off */ |
Archit Taneja | 9613c02 | 2011-03-22 06:33:36 -0500 | [diff] [blame] | 2723 | if (dss_has_feature(FEAT_DSI_VC_OCP_WIDTH)) |
| 2724 | r = FLD_MOD(r, 3, 11, 10); /* OCP_WIDTH = 32 bit */ |
Tomi Valkeinen | 3de7a1d | 2009-10-28 11:59:56 +0200 | [diff] [blame] | 2725 | |
| 2726 | r = FLD_MOD(r, 4, 29, 27); /* DMA_RX_REQ_NB = no dma */ |
| 2727 | r = FLD_MOD(r, 4, 23, 21); /* DMA_TX_REQ_NB = no dma */ |
| 2728 | |
Archit Taneja | a72b64b | 2011-05-12 17:26:26 +0530 | [diff] [blame] | 2729 | dsi_write_reg(dsidev, DSI_VC_CTRL(channel), r); |
Tomi Valkeinen | 3de7a1d | 2009-10-28 11:59:56 +0200 | [diff] [blame] | 2730 | } |
| 2731 | |
Archit Taneja | d604914 | 2011-08-22 11:58:08 +0530 | [diff] [blame] | 2732 | static int dsi_vc_config_source(struct platform_device *dsidev, int channel, |
| 2733 | enum dsi_vc_source source) |
Tomi Valkeinen | 3de7a1d | 2009-10-28 11:59:56 +0200 | [diff] [blame] | 2734 | { |
Archit Taneja | f1da39d | 2011-05-12 17:26:27 +0530 | [diff] [blame] | 2735 | struct dsi_data *dsi = dsi_get_dsidrv_data(dsidev); |
| 2736 | |
Archit Taneja | d604914 | 2011-08-22 11:58:08 +0530 | [diff] [blame] | 2737 | if (dsi->vc[channel].source == source) |
Tomi Valkeinen | 9ecd968 | 2010-04-30 11:24:33 +0300 | [diff] [blame] | 2738 | return 0; |
Tomi Valkeinen | 3de7a1d | 2009-10-28 11:59:56 +0200 | [diff] [blame] | 2739 | |
| 2740 | DSSDBGF("%d", channel); |
| 2741 | |
Archit Taneja | a72b64b | 2011-05-12 17:26:26 +0530 | [diff] [blame] | 2742 | dsi_sync_vc(dsidev, channel); |
Archit Taneja | cf398fb | 2011-03-23 09:59:34 +0000 | [diff] [blame] | 2743 | |
Archit Taneja | a72b64b | 2011-05-12 17:26:26 +0530 | [diff] [blame] | 2744 | dsi_vc_enable(dsidev, channel, 0); |
Tomi Valkeinen | 3de7a1d | 2009-10-28 11:59:56 +0200 | [diff] [blame] | 2745 | |
Tomi Valkeinen | 9ecd968 | 2010-04-30 11:24:33 +0300 | [diff] [blame] | 2746 | /* VC_BUSY */ |
Archit Taneja | a72b64b | 2011-05-12 17:26:26 +0530 | [diff] [blame] | 2747 | if (wait_for_bit_change(dsidev, DSI_VC_CTRL(channel), 15, 0) != 0) { |
Tomi Valkeinen | 3de7a1d | 2009-10-28 11:59:56 +0200 | [diff] [blame] | 2748 | DSSERR("vc(%d) busy when trying to config for VP\n", channel); |
Tomi Valkeinen | 9ecd968 | 2010-04-30 11:24:33 +0300 | [diff] [blame] | 2749 | return -EIO; |
| 2750 | } |
Tomi Valkeinen | 3de7a1d | 2009-10-28 11:59:56 +0200 | [diff] [blame] | 2751 | |
Archit Taneja | d604914 | 2011-08-22 11:58:08 +0530 | [diff] [blame] | 2752 | /* SOURCE, 0 = L4, 1 = video port */ |
| 2753 | REG_FLD_MOD(dsidev, DSI_VC_CTRL(channel), source, 1, 1); |
Tomi Valkeinen | 3de7a1d | 2009-10-28 11:59:56 +0200 | [diff] [blame] | 2754 | |
Archit Taneja | 9613c02 | 2011-03-22 06:33:36 -0500 | [diff] [blame] | 2755 | /* DCS_CMD_ENABLE */ |
Archit Taneja | d604914 | 2011-08-22 11:58:08 +0530 | [diff] [blame] | 2756 | if (dss_has_feature(FEAT_DSI_DCS_CMD_CONFIG_VC)) { |
| 2757 | bool enable = source == DSI_VC_SOURCE_VP; |
| 2758 | REG_FLD_MOD(dsidev, DSI_VC_CTRL(channel), enable, 30, 30); |
| 2759 | } |
Archit Taneja | 9613c02 | 2011-03-22 06:33:36 -0500 | [diff] [blame] | 2760 | |
Archit Taneja | a72b64b | 2011-05-12 17:26:26 +0530 | [diff] [blame] | 2761 | dsi_vc_enable(dsidev, channel, 1); |
Tomi Valkeinen | 3de7a1d | 2009-10-28 11:59:56 +0200 | [diff] [blame] | 2762 | |
Archit Taneja | d604914 | 2011-08-22 11:58:08 +0530 | [diff] [blame] | 2763 | dsi->vc[channel].source = source; |
Tomi Valkeinen | 9ecd968 | 2010-04-30 11:24:33 +0300 | [diff] [blame] | 2764 | |
| 2765 | return 0; |
Tomi Valkeinen | 3de7a1d | 2009-10-28 11:59:56 +0200 | [diff] [blame] | 2766 | } |
| 2767 | |
Archit Taneja | 1ffefe7 | 2011-05-12 17:26:24 +0530 | [diff] [blame] | 2768 | void omapdss_dsi_vc_enable_hs(struct omap_dss_device *dssdev, int channel, |
| 2769 | bool enable) |
Tomi Valkeinen | 3de7a1d | 2009-10-28 11:59:56 +0200 | [diff] [blame] | 2770 | { |
Archit Taneja | a72b64b | 2011-05-12 17:26:26 +0530 | [diff] [blame] | 2771 | struct platform_device *dsidev = dsi_get_dsidev_from_dssdev(dssdev); |
| 2772 | |
Tomi Valkeinen | 3de7a1d | 2009-10-28 11:59:56 +0200 | [diff] [blame] | 2773 | DSSDBG("dsi_vc_enable_hs(%d, %d)\n", channel, enable); |
| 2774 | |
Archit Taneja | a72b64b | 2011-05-12 17:26:26 +0530 | [diff] [blame] | 2775 | WARN_ON(!dsi_bus_is_locked(dsidev)); |
Tomi Valkeinen | 61140c9 | 2010-01-12 16:00:30 +0200 | [diff] [blame] | 2776 | |
Archit Taneja | a72b64b | 2011-05-12 17:26:26 +0530 | [diff] [blame] | 2777 | dsi_vc_enable(dsidev, channel, 0); |
| 2778 | dsi_if_enable(dsidev, 0); |
Tomi Valkeinen | 3de7a1d | 2009-10-28 11:59:56 +0200 | [diff] [blame] | 2779 | |
Archit Taneja | a72b64b | 2011-05-12 17:26:26 +0530 | [diff] [blame] | 2780 | REG_FLD_MOD(dsidev, DSI_VC_CTRL(channel), enable, 9, 9); |
Tomi Valkeinen | 3de7a1d | 2009-10-28 11:59:56 +0200 | [diff] [blame] | 2781 | |
Archit Taneja | a72b64b | 2011-05-12 17:26:26 +0530 | [diff] [blame] | 2782 | dsi_vc_enable(dsidev, channel, 1); |
| 2783 | dsi_if_enable(dsidev, 1); |
Tomi Valkeinen | 3de7a1d | 2009-10-28 11:59:56 +0200 | [diff] [blame] | 2784 | |
Archit Taneja | a72b64b | 2011-05-12 17:26:26 +0530 | [diff] [blame] | 2785 | dsi_force_tx_stop_mode_io(dsidev); |
Tomi Valkeinen | 3de7a1d | 2009-10-28 11:59:56 +0200 | [diff] [blame] | 2786 | } |
Tomi Valkeinen | 61140c9 | 2010-01-12 16:00:30 +0200 | [diff] [blame] | 2787 | EXPORT_SYMBOL(omapdss_dsi_vc_enable_hs); |
Tomi Valkeinen | 3de7a1d | 2009-10-28 11:59:56 +0200 | [diff] [blame] | 2788 | |
Archit Taneja | a72b64b | 2011-05-12 17:26:26 +0530 | [diff] [blame] | 2789 | static void dsi_vc_flush_long_data(struct platform_device *dsidev, int channel) |
Tomi Valkeinen | 3de7a1d | 2009-10-28 11:59:56 +0200 | [diff] [blame] | 2790 | { |
Archit Taneja | a72b64b | 2011-05-12 17:26:26 +0530 | [diff] [blame] | 2791 | while (REG_GET(dsidev, DSI_VC_CTRL(channel), 20, 20)) { |
Tomi Valkeinen | 3de7a1d | 2009-10-28 11:59:56 +0200 | [diff] [blame] | 2792 | u32 val; |
Archit Taneja | a72b64b | 2011-05-12 17:26:26 +0530 | [diff] [blame] | 2793 | val = dsi_read_reg(dsidev, DSI_VC_SHORT_PACKET_HEADER(channel)); |
Tomi Valkeinen | 3de7a1d | 2009-10-28 11:59:56 +0200 | [diff] [blame] | 2794 | DSSDBG("\t\tb1 %#02x b2 %#02x b3 %#02x b4 %#02x\n", |
| 2795 | (val >> 0) & 0xff, |
| 2796 | (val >> 8) & 0xff, |
| 2797 | (val >> 16) & 0xff, |
| 2798 | (val >> 24) & 0xff); |
| 2799 | } |
| 2800 | } |
| 2801 | |
| 2802 | static void dsi_show_rx_ack_with_err(u16 err) |
| 2803 | { |
| 2804 | DSSERR("\tACK with ERROR (%#x):\n", err); |
| 2805 | if (err & (1 << 0)) |
| 2806 | DSSERR("\t\tSoT Error\n"); |
| 2807 | if (err & (1 << 1)) |
| 2808 | DSSERR("\t\tSoT Sync Error\n"); |
| 2809 | if (err & (1 << 2)) |
| 2810 | DSSERR("\t\tEoT Sync Error\n"); |
| 2811 | if (err & (1 << 3)) |
| 2812 | DSSERR("\t\tEscape Mode Entry Command Error\n"); |
| 2813 | if (err & (1 << 4)) |
| 2814 | DSSERR("\t\tLP Transmit Sync Error\n"); |
| 2815 | if (err & (1 << 5)) |
| 2816 | DSSERR("\t\tHS Receive Timeout Error\n"); |
| 2817 | if (err & (1 << 6)) |
| 2818 | DSSERR("\t\tFalse Control Error\n"); |
| 2819 | if (err & (1 << 7)) |
| 2820 | DSSERR("\t\t(reserved7)\n"); |
| 2821 | if (err & (1 << 8)) |
| 2822 | DSSERR("\t\tECC Error, single-bit (corrected)\n"); |
| 2823 | if (err & (1 << 9)) |
| 2824 | DSSERR("\t\tECC Error, multi-bit (not corrected)\n"); |
| 2825 | if (err & (1 << 10)) |
| 2826 | DSSERR("\t\tChecksum Error\n"); |
| 2827 | if (err & (1 << 11)) |
| 2828 | DSSERR("\t\tData type not recognized\n"); |
| 2829 | if (err & (1 << 12)) |
| 2830 | DSSERR("\t\tInvalid VC ID\n"); |
| 2831 | if (err & (1 << 13)) |
| 2832 | DSSERR("\t\tInvalid Transmission Length\n"); |
| 2833 | if (err & (1 << 14)) |
| 2834 | DSSERR("\t\t(reserved14)\n"); |
| 2835 | if (err & (1 << 15)) |
| 2836 | DSSERR("\t\tDSI Protocol Violation\n"); |
| 2837 | } |
| 2838 | |
Archit Taneja | a72b64b | 2011-05-12 17:26:26 +0530 | [diff] [blame] | 2839 | static u16 dsi_vc_flush_receive_data(struct platform_device *dsidev, |
| 2840 | int channel) |
Tomi Valkeinen | 3de7a1d | 2009-10-28 11:59:56 +0200 | [diff] [blame] | 2841 | { |
| 2842 | /* RX_FIFO_NOT_EMPTY */ |
Archit Taneja | a72b64b | 2011-05-12 17:26:26 +0530 | [diff] [blame] | 2843 | while (REG_GET(dsidev, DSI_VC_CTRL(channel), 20, 20)) { |
Tomi Valkeinen | 3de7a1d | 2009-10-28 11:59:56 +0200 | [diff] [blame] | 2844 | u32 val; |
| 2845 | u8 dt; |
Archit Taneja | a72b64b | 2011-05-12 17:26:26 +0530 | [diff] [blame] | 2846 | val = dsi_read_reg(dsidev, DSI_VC_SHORT_PACKET_HEADER(channel)); |
Tomi Valkeinen | 86a7867 | 2010-03-16 16:19:06 +0200 | [diff] [blame] | 2847 | DSSERR("\trawval %#08x\n", val); |
Tomi Valkeinen | 3de7a1d | 2009-10-28 11:59:56 +0200 | [diff] [blame] | 2848 | dt = FLD_GET(val, 5, 0); |
Archit Taneja | 7a7c48f | 2011-08-25 18:25:03 +0530 | [diff] [blame] | 2849 | if (dt == MIPI_DSI_RX_ACKNOWLEDGE_AND_ERROR_REPORT) { |
Tomi Valkeinen | 3de7a1d | 2009-10-28 11:59:56 +0200 | [diff] [blame] | 2850 | u16 err = FLD_GET(val, 23, 8); |
| 2851 | dsi_show_rx_ack_with_err(err); |
Archit Taneja | 7a7c48f | 2011-08-25 18:25:03 +0530 | [diff] [blame] | 2852 | } else if (dt == MIPI_DSI_RX_DCS_SHORT_READ_RESPONSE_1BYTE) { |
Tomi Valkeinen | 86a7867 | 2010-03-16 16:19:06 +0200 | [diff] [blame] | 2853 | DSSERR("\tDCS short response, 1 byte: %#x\n", |
Tomi Valkeinen | 3de7a1d | 2009-10-28 11:59:56 +0200 | [diff] [blame] | 2854 | FLD_GET(val, 23, 8)); |
Archit Taneja | 7a7c48f | 2011-08-25 18:25:03 +0530 | [diff] [blame] | 2855 | } else if (dt == MIPI_DSI_RX_DCS_SHORT_READ_RESPONSE_2BYTE) { |
Tomi Valkeinen | 86a7867 | 2010-03-16 16:19:06 +0200 | [diff] [blame] | 2856 | DSSERR("\tDCS short response, 2 byte: %#x\n", |
Tomi Valkeinen | 3de7a1d | 2009-10-28 11:59:56 +0200 | [diff] [blame] | 2857 | FLD_GET(val, 23, 8)); |
Archit Taneja | 7a7c48f | 2011-08-25 18:25:03 +0530 | [diff] [blame] | 2858 | } else if (dt == MIPI_DSI_RX_DCS_LONG_READ_RESPONSE) { |
Tomi Valkeinen | 86a7867 | 2010-03-16 16:19:06 +0200 | [diff] [blame] | 2859 | DSSERR("\tDCS long response, len %d\n", |
Tomi Valkeinen | 3de7a1d | 2009-10-28 11:59:56 +0200 | [diff] [blame] | 2860 | FLD_GET(val, 23, 8)); |
Archit Taneja | a72b64b | 2011-05-12 17:26:26 +0530 | [diff] [blame] | 2861 | dsi_vc_flush_long_data(dsidev, channel); |
Tomi Valkeinen | 3de7a1d | 2009-10-28 11:59:56 +0200 | [diff] [blame] | 2862 | } else { |
| 2863 | DSSERR("\tunknown datatype 0x%02x\n", dt); |
| 2864 | } |
| 2865 | } |
| 2866 | return 0; |
| 2867 | } |
| 2868 | |
Archit Taneja | a72b64b | 2011-05-12 17:26:26 +0530 | [diff] [blame] | 2869 | static int dsi_vc_send_bta(struct platform_device *dsidev, int channel) |
Tomi Valkeinen | 3de7a1d | 2009-10-28 11:59:56 +0200 | [diff] [blame] | 2870 | { |
Archit Taneja | f1da39d | 2011-05-12 17:26:27 +0530 | [diff] [blame] | 2871 | struct dsi_data *dsi = dsi_get_dsidrv_data(dsidev); |
| 2872 | |
| 2873 | if (dsi->debug_write || dsi->debug_read) |
Tomi Valkeinen | 3de7a1d | 2009-10-28 11:59:56 +0200 | [diff] [blame] | 2874 | DSSDBG("dsi_vc_send_bta %d\n", channel); |
| 2875 | |
Archit Taneja | a72b64b | 2011-05-12 17:26:26 +0530 | [diff] [blame] | 2876 | WARN_ON(!dsi_bus_is_locked(dsidev)); |
Tomi Valkeinen | 3de7a1d | 2009-10-28 11:59:56 +0200 | [diff] [blame] | 2877 | |
Archit Taneja | a72b64b | 2011-05-12 17:26:26 +0530 | [diff] [blame] | 2878 | /* RX_FIFO_NOT_EMPTY */ |
| 2879 | if (REG_GET(dsidev, DSI_VC_CTRL(channel), 20, 20)) { |
Tomi Valkeinen | 3de7a1d | 2009-10-28 11:59:56 +0200 | [diff] [blame] | 2880 | DSSERR("rx fifo not empty when sending BTA, dumping data:\n"); |
Archit Taneja | a72b64b | 2011-05-12 17:26:26 +0530 | [diff] [blame] | 2881 | dsi_vc_flush_receive_data(dsidev, channel); |
Tomi Valkeinen | 3de7a1d | 2009-10-28 11:59:56 +0200 | [diff] [blame] | 2882 | } |
| 2883 | |
Archit Taneja | a72b64b | 2011-05-12 17:26:26 +0530 | [diff] [blame] | 2884 | REG_FLD_MOD(dsidev, DSI_VC_CTRL(channel), 1, 6, 6); /* BTA_EN */ |
Tomi Valkeinen | 3de7a1d | 2009-10-28 11:59:56 +0200 | [diff] [blame] | 2885 | |
| 2886 | return 0; |
| 2887 | } |
| 2888 | |
Archit Taneja | 1ffefe7 | 2011-05-12 17:26:24 +0530 | [diff] [blame] | 2889 | int dsi_vc_send_bta_sync(struct omap_dss_device *dssdev, int channel) |
Tomi Valkeinen | 3de7a1d | 2009-10-28 11:59:56 +0200 | [diff] [blame] | 2890 | { |
Archit Taneja | a72b64b | 2011-05-12 17:26:26 +0530 | [diff] [blame] | 2891 | struct platform_device *dsidev = dsi_get_dsidev_from_dssdev(dssdev); |
Tomi Valkeinen | f36a06e | 2011-03-02 14:48:41 +0200 | [diff] [blame] | 2892 | DECLARE_COMPLETION_ONSTACK(completion); |
Tomi Valkeinen | 3de7a1d | 2009-10-28 11:59:56 +0200 | [diff] [blame] | 2893 | int r = 0; |
| 2894 | u32 err; |
| 2895 | |
Archit Taneja | a72b64b | 2011-05-12 17:26:26 +0530 | [diff] [blame] | 2896 | r = dsi_register_isr_vc(dsidev, channel, dsi_completion_handler, |
Tomi Valkeinen | f36a06e | 2011-03-02 14:48:41 +0200 | [diff] [blame] | 2897 | &completion, DSI_VC_IRQ_BTA); |
| 2898 | if (r) |
| 2899 | goto err0; |
Tomi Valkeinen | 3de7a1d | 2009-10-28 11:59:56 +0200 | [diff] [blame] | 2900 | |
Archit Taneja | a72b64b | 2011-05-12 17:26:26 +0530 | [diff] [blame] | 2901 | r = dsi_register_isr(dsidev, dsi_completion_handler, &completion, |
Tomi Valkeinen | 773b30b | 2010-10-08 16:15:25 +0300 | [diff] [blame] | 2902 | DSI_IRQ_ERROR_MASK); |
Tomi Valkeinen | 3de7a1d | 2009-10-28 11:59:56 +0200 | [diff] [blame] | 2903 | if (r) |
Tomi Valkeinen | f36a06e | 2011-03-02 14:48:41 +0200 | [diff] [blame] | 2904 | goto err1; |
Tomi Valkeinen | 3de7a1d | 2009-10-28 11:59:56 +0200 | [diff] [blame] | 2905 | |
Archit Taneja | a72b64b | 2011-05-12 17:26:26 +0530 | [diff] [blame] | 2906 | r = dsi_vc_send_bta(dsidev, channel); |
Tomi Valkeinen | 773b30b | 2010-10-08 16:15:25 +0300 | [diff] [blame] | 2907 | if (r) |
| 2908 | goto err2; |
| 2909 | |
Tomi Valkeinen | f36a06e | 2011-03-02 14:48:41 +0200 | [diff] [blame] | 2910 | if (wait_for_completion_timeout(&completion, |
Tomi Valkeinen | 3de7a1d | 2009-10-28 11:59:56 +0200 | [diff] [blame] | 2911 | msecs_to_jiffies(500)) == 0) { |
| 2912 | DSSERR("Failed to receive BTA\n"); |
| 2913 | r = -EIO; |
Tomi Valkeinen | 773b30b | 2010-10-08 16:15:25 +0300 | [diff] [blame] | 2914 | goto err2; |
Tomi Valkeinen | 3de7a1d | 2009-10-28 11:59:56 +0200 | [diff] [blame] | 2915 | } |
| 2916 | |
Archit Taneja | a72b64b | 2011-05-12 17:26:26 +0530 | [diff] [blame] | 2917 | err = dsi_get_errors(dsidev); |
Tomi Valkeinen | 3de7a1d | 2009-10-28 11:59:56 +0200 | [diff] [blame] | 2918 | if (err) { |
| 2919 | DSSERR("Error while sending BTA: %x\n", err); |
| 2920 | r = -EIO; |
Tomi Valkeinen | 773b30b | 2010-10-08 16:15:25 +0300 | [diff] [blame] | 2921 | goto err2; |
Tomi Valkeinen | 3de7a1d | 2009-10-28 11:59:56 +0200 | [diff] [blame] | 2922 | } |
Tomi Valkeinen | 773b30b | 2010-10-08 16:15:25 +0300 | [diff] [blame] | 2923 | err2: |
Archit Taneja | a72b64b | 2011-05-12 17:26:26 +0530 | [diff] [blame] | 2924 | dsi_unregister_isr(dsidev, dsi_completion_handler, &completion, |
Tomi Valkeinen | 773b30b | 2010-10-08 16:15:25 +0300 | [diff] [blame] | 2925 | DSI_IRQ_ERROR_MASK); |
Tomi Valkeinen | f36a06e | 2011-03-02 14:48:41 +0200 | [diff] [blame] | 2926 | err1: |
Archit Taneja | a72b64b | 2011-05-12 17:26:26 +0530 | [diff] [blame] | 2927 | dsi_unregister_isr_vc(dsidev, channel, dsi_completion_handler, |
Tomi Valkeinen | f36a06e | 2011-03-02 14:48:41 +0200 | [diff] [blame] | 2928 | &completion, DSI_VC_IRQ_BTA); |
| 2929 | err0: |
Tomi Valkeinen | 3de7a1d | 2009-10-28 11:59:56 +0200 | [diff] [blame] | 2930 | return r; |
| 2931 | } |
| 2932 | EXPORT_SYMBOL(dsi_vc_send_bta_sync); |
| 2933 | |
Archit Taneja | a72b64b | 2011-05-12 17:26:26 +0530 | [diff] [blame] | 2934 | static inline void dsi_vc_write_long_header(struct platform_device *dsidev, |
| 2935 | int channel, u8 data_type, u16 len, u8 ecc) |
Tomi Valkeinen | 3de7a1d | 2009-10-28 11:59:56 +0200 | [diff] [blame] | 2936 | { |
Archit Taneja | f1da39d | 2011-05-12 17:26:27 +0530 | [diff] [blame] | 2937 | struct dsi_data *dsi = dsi_get_dsidrv_data(dsidev); |
Tomi Valkeinen | 3de7a1d | 2009-10-28 11:59:56 +0200 | [diff] [blame] | 2938 | u32 val; |
| 2939 | u8 data_id; |
| 2940 | |
Archit Taneja | a72b64b | 2011-05-12 17:26:26 +0530 | [diff] [blame] | 2941 | WARN_ON(!dsi_bus_is_locked(dsidev)); |
Tomi Valkeinen | 3de7a1d | 2009-10-28 11:59:56 +0200 | [diff] [blame] | 2942 | |
Archit Taneja | f1da39d | 2011-05-12 17:26:27 +0530 | [diff] [blame] | 2943 | data_id = data_type | dsi->vc[channel].vc_id << 6; |
Tomi Valkeinen | 3de7a1d | 2009-10-28 11:59:56 +0200 | [diff] [blame] | 2944 | |
| 2945 | val = FLD_VAL(data_id, 7, 0) | FLD_VAL(len, 23, 8) | |
| 2946 | FLD_VAL(ecc, 31, 24); |
| 2947 | |
Archit Taneja | a72b64b | 2011-05-12 17:26:26 +0530 | [diff] [blame] | 2948 | dsi_write_reg(dsidev, DSI_VC_LONG_PACKET_HEADER(channel), val); |
Tomi Valkeinen | 3de7a1d | 2009-10-28 11:59:56 +0200 | [diff] [blame] | 2949 | } |
| 2950 | |
Archit Taneja | a72b64b | 2011-05-12 17:26:26 +0530 | [diff] [blame] | 2951 | static inline void dsi_vc_write_long_payload(struct platform_device *dsidev, |
| 2952 | int channel, u8 b1, u8 b2, u8 b3, u8 b4) |
Tomi Valkeinen | 3de7a1d | 2009-10-28 11:59:56 +0200 | [diff] [blame] | 2953 | { |
| 2954 | u32 val; |
| 2955 | |
| 2956 | val = b4 << 24 | b3 << 16 | b2 << 8 | b1 << 0; |
| 2957 | |
| 2958 | /* DSSDBG("\twriting %02x, %02x, %02x, %02x (%#010x)\n", |
| 2959 | b1, b2, b3, b4, val); */ |
| 2960 | |
Archit Taneja | a72b64b | 2011-05-12 17:26:26 +0530 | [diff] [blame] | 2961 | dsi_write_reg(dsidev, DSI_VC_LONG_PACKET_PAYLOAD(channel), val); |
Tomi Valkeinen | 3de7a1d | 2009-10-28 11:59:56 +0200 | [diff] [blame] | 2962 | } |
| 2963 | |
Archit Taneja | a72b64b | 2011-05-12 17:26:26 +0530 | [diff] [blame] | 2964 | static int dsi_vc_send_long(struct platform_device *dsidev, int channel, |
| 2965 | u8 data_type, u8 *data, u16 len, u8 ecc) |
Tomi Valkeinen | 3de7a1d | 2009-10-28 11:59:56 +0200 | [diff] [blame] | 2966 | { |
| 2967 | /*u32 val; */ |
Archit Taneja | f1da39d | 2011-05-12 17:26:27 +0530 | [diff] [blame] | 2968 | struct dsi_data *dsi = dsi_get_dsidrv_data(dsidev); |
Tomi Valkeinen | 3de7a1d | 2009-10-28 11:59:56 +0200 | [diff] [blame] | 2969 | int i; |
| 2970 | u8 *p; |
| 2971 | int r = 0; |
| 2972 | u8 b1, b2, b3, b4; |
| 2973 | |
Archit Taneja | f1da39d | 2011-05-12 17:26:27 +0530 | [diff] [blame] | 2974 | if (dsi->debug_write) |
Tomi Valkeinen | 3de7a1d | 2009-10-28 11:59:56 +0200 | [diff] [blame] | 2975 | DSSDBG("dsi_vc_send_long, %d bytes\n", len); |
| 2976 | |
| 2977 | /* len + header */ |
Archit Taneja | f1da39d | 2011-05-12 17:26:27 +0530 | [diff] [blame] | 2978 | if (dsi->vc[channel].fifo_size * 32 * 4 < len + 4) { |
Tomi Valkeinen | 3de7a1d | 2009-10-28 11:59:56 +0200 | [diff] [blame] | 2979 | DSSERR("unable to send long packet: packet too long.\n"); |
| 2980 | return -EINVAL; |
| 2981 | } |
| 2982 | |
Archit Taneja | d604914 | 2011-08-22 11:58:08 +0530 | [diff] [blame] | 2983 | dsi_vc_config_source(dsidev, channel, DSI_VC_SOURCE_L4); |
Tomi Valkeinen | 3de7a1d | 2009-10-28 11:59:56 +0200 | [diff] [blame] | 2984 | |
Archit Taneja | a72b64b | 2011-05-12 17:26:26 +0530 | [diff] [blame] | 2985 | dsi_vc_write_long_header(dsidev, channel, data_type, len, ecc); |
Tomi Valkeinen | 3de7a1d | 2009-10-28 11:59:56 +0200 | [diff] [blame] | 2986 | |
Tomi Valkeinen | 3de7a1d | 2009-10-28 11:59:56 +0200 | [diff] [blame] | 2987 | p = data; |
| 2988 | for (i = 0; i < len >> 2; i++) { |
Archit Taneja | f1da39d | 2011-05-12 17:26:27 +0530 | [diff] [blame] | 2989 | if (dsi->debug_write) |
Tomi Valkeinen | 3de7a1d | 2009-10-28 11:59:56 +0200 | [diff] [blame] | 2990 | DSSDBG("\tsending full packet %d\n", i); |
Tomi Valkeinen | 3de7a1d | 2009-10-28 11:59:56 +0200 | [diff] [blame] | 2991 | |
| 2992 | b1 = *p++; |
| 2993 | b2 = *p++; |
| 2994 | b3 = *p++; |
| 2995 | b4 = *p++; |
| 2996 | |
Archit Taneja | a72b64b | 2011-05-12 17:26:26 +0530 | [diff] [blame] | 2997 | dsi_vc_write_long_payload(dsidev, channel, b1, b2, b3, b4); |
Tomi Valkeinen | 3de7a1d | 2009-10-28 11:59:56 +0200 | [diff] [blame] | 2998 | } |
| 2999 | |
| 3000 | i = len % 4; |
| 3001 | if (i) { |
| 3002 | b1 = 0; b2 = 0; b3 = 0; |
| 3003 | |
Archit Taneja | f1da39d | 2011-05-12 17:26:27 +0530 | [diff] [blame] | 3004 | if (dsi->debug_write) |
Tomi Valkeinen | 3de7a1d | 2009-10-28 11:59:56 +0200 | [diff] [blame] | 3005 | DSSDBG("\tsending remainder bytes %d\n", i); |
| 3006 | |
| 3007 | switch (i) { |
| 3008 | case 3: |
| 3009 | b1 = *p++; |
| 3010 | b2 = *p++; |
| 3011 | b3 = *p++; |
| 3012 | break; |
| 3013 | case 2: |
| 3014 | b1 = *p++; |
| 3015 | b2 = *p++; |
| 3016 | break; |
| 3017 | case 1: |
| 3018 | b1 = *p++; |
| 3019 | break; |
| 3020 | } |
| 3021 | |
Archit Taneja | a72b64b | 2011-05-12 17:26:26 +0530 | [diff] [blame] | 3022 | dsi_vc_write_long_payload(dsidev, channel, b1, b2, b3, 0); |
Tomi Valkeinen | 3de7a1d | 2009-10-28 11:59:56 +0200 | [diff] [blame] | 3023 | } |
| 3024 | |
| 3025 | return r; |
| 3026 | } |
| 3027 | |
Archit Taneja | a72b64b | 2011-05-12 17:26:26 +0530 | [diff] [blame] | 3028 | static int dsi_vc_send_short(struct platform_device *dsidev, int channel, |
| 3029 | u8 data_type, u16 data, u8 ecc) |
Tomi Valkeinen | 3de7a1d | 2009-10-28 11:59:56 +0200 | [diff] [blame] | 3030 | { |
Archit Taneja | f1da39d | 2011-05-12 17:26:27 +0530 | [diff] [blame] | 3031 | struct dsi_data *dsi = dsi_get_dsidrv_data(dsidev); |
Tomi Valkeinen | 3de7a1d | 2009-10-28 11:59:56 +0200 | [diff] [blame] | 3032 | u32 r; |
| 3033 | u8 data_id; |
| 3034 | |
Archit Taneja | a72b64b | 2011-05-12 17:26:26 +0530 | [diff] [blame] | 3035 | WARN_ON(!dsi_bus_is_locked(dsidev)); |
Tomi Valkeinen | 3de7a1d | 2009-10-28 11:59:56 +0200 | [diff] [blame] | 3036 | |
Archit Taneja | f1da39d | 2011-05-12 17:26:27 +0530 | [diff] [blame] | 3037 | if (dsi->debug_write) |
Tomi Valkeinen | 3de7a1d | 2009-10-28 11:59:56 +0200 | [diff] [blame] | 3038 | DSSDBG("dsi_vc_send_short(ch%d, dt %#x, b1 %#x, b2 %#x)\n", |
| 3039 | channel, |
| 3040 | data_type, data & 0xff, (data >> 8) & 0xff); |
| 3041 | |
Archit Taneja | d604914 | 2011-08-22 11:58:08 +0530 | [diff] [blame] | 3042 | dsi_vc_config_source(dsidev, channel, DSI_VC_SOURCE_L4); |
Tomi Valkeinen | 3de7a1d | 2009-10-28 11:59:56 +0200 | [diff] [blame] | 3043 | |
Archit Taneja | a72b64b | 2011-05-12 17:26:26 +0530 | [diff] [blame] | 3044 | if (FLD_GET(dsi_read_reg(dsidev, DSI_VC_CTRL(channel)), 16, 16)) { |
Tomi Valkeinen | 3de7a1d | 2009-10-28 11:59:56 +0200 | [diff] [blame] | 3045 | DSSERR("ERROR FIFO FULL, aborting transfer\n"); |
| 3046 | return -EINVAL; |
| 3047 | } |
| 3048 | |
Archit Taneja | f1da39d | 2011-05-12 17:26:27 +0530 | [diff] [blame] | 3049 | data_id = data_type | dsi->vc[channel].vc_id << 6; |
Tomi Valkeinen | 3de7a1d | 2009-10-28 11:59:56 +0200 | [diff] [blame] | 3050 | |
| 3051 | r = (data_id << 0) | (data << 8) | (ecc << 24); |
| 3052 | |
Archit Taneja | a72b64b | 2011-05-12 17:26:26 +0530 | [diff] [blame] | 3053 | dsi_write_reg(dsidev, DSI_VC_SHORT_PACKET_HEADER(channel), r); |
Tomi Valkeinen | 3de7a1d | 2009-10-28 11:59:56 +0200 | [diff] [blame] | 3054 | |
| 3055 | return 0; |
| 3056 | } |
| 3057 | |
Archit Taneja | 1ffefe7 | 2011-05-12 17:26:24 +0530 | [diff] [blame] | 3058 | int dsi_vc_send_null(struct omap_dss_device *dssdev, int channel) |
Tomi Valkeinen | 3de7a1d | 2009-10-28 11:59:56 +0200 | [diff] [blame] | 3059 | { |
Archit Taneja | a72b64b | 2011-05-12 17:26:26 +0530 | [diff] [blame] | 3060 | struct platform_device *dsidev = dsi_get_dsidev_from_dssdev(dssdev); |
Tomi Valkeinen | 3de7a1d | 2009-10-28 11:59:56 +0200 | [diff] [blame] | 3061 | u8 nullpkg[] = {0, 0, 0, 0}; |
Archit Taneja | a72b64b | 2011-05-12 17:26:26 +0530 | [diff] [blame] | 3062 | |
Archit Taneja | 7a7c48f | 2011-08-25 18:25:03 +0530 | [diff] [blame] | 3063 | return dsi_vc_send_long(dsidev, channel, MIPI_DSI_NULL_PACKET, nullpkg, |
Archit Taneja | a72b64b | 2011-05-12 17:26:26 +0530 | [diff] [blame] | 3064 | 4, 0); |
Tomi Valkeinen | 3de7a1d | 2009-10-28 11:59:56 +0200 | [diff] [blame] | 3065 | } |
| 3066 | EXPORT_SYMBOL(dsi_vc_send_null); |
| 3067 | |
Archit Taneja | 1ffefe7 | 2011-05-12 17:26:24 +0530 | [diff] [blame] | 3068 | int dsi_vc_dcs_write_nosync(struct omap_dss_device *dssdev, int channel, |
| 3069 | u8 *data, int len) |
Tomi Valkeinen | 3de7a1d | 2009-10-28 11:59:56 +0200 | [diff] [blame] | 3070 | { |
Archit Taneja | a72b64b | 2011-05-12 17:26:26 +0530 | [diff] [blame] | 3071 | struct platform_device *dsidev = dsi_get_dsidev_from_dssdev(dssdev); |
Tomi Valkeinen | 3de7a1d | 2009-10-28 11:59:56 +0200 | [diff] [blame] | 3072 | int r; |
| 3073 | |
| 3074 | BUG_ON(len == 0); |
| 3075 | |
| 3076 | if (len == 1) { |
Archit Taneja | 7a7c48f | 2011-08-25 18:25:03 +0530 | [diff] [blame] | 3077 | r = dsi_vc_send_short(dsidev, channel, |
| 3078 | MIPI_DSI_DCS_SHORT_WRITE, data[0], 0); |
Tomi Valkeinen | 3de7a1d | 2009-10-28 11:59:56 +0200 | [diff] [blame] | 3079 | } else if (len == 2) { |
Archit Taneja | 7a7c48f | 2011-08-25 18:25:03 +0530 | [diff] [blame] | 3080 | r = dsi_vc_send_short(dsidev, channel, |
| 3081 | MIPI_DSI_DCS_SHORT_WRITE_PARAM, |
Tomi Valkeinen | 3de7a1d | 2009-10-28 11:59:56 +0200 | [diff] [blame] | 3082 | data[0] | (data[1] << 8), 0); |
| 3083 | } else { |
| 3084 | /* 0x39 = DCS Long Write */ |
Archit Taneja | 7a7c48f | 2011-08-25 18:25:03 +0530 | [diff] [blame] | 3085 | r = dsi_vc_send_long(dsidev, channel, MIPI_DSI_DCS_LONG_WRITE, |
Tomi Valkeinen | 3de7a1d | 2009-10-28 11:59:56 +0200 | [diff] [blame] | 3086 | data, len, 0); |
| 3087 | } |
| 3088 | |
| 3089 | return r; |
| 3090 | } |
| 3091 | EXPORT_SYMBOL(dsi_vc_dcs_write_nosync); |
| 3092 | |
Archit Taneja | 1ffefe7 | 2011-05-12 17:26:24 +0530 | [diff] [blame] | 3093 | int dsi_vc_dcs_write(struct omap_dss_device *dssdev, int channel, u8 *data, |
| 3094 | int len) |
Tomi Valkeinen | 3de7a1d | 2009-10-28 11:59:56 +0200 | [diff] [blame] | 3095 | { |
Archit Taneja | a72b64b | 2011-05-12 17:26:26 +0530 | [diff] [blame] | 3096 | struct platform_device *dsidev = dsi_get_dsidev_from_dssdev(dssdev); |
Tomi Valkeinen | 3de7a1d | 2009-10-28 11:59:56 +0200 | [diff] [blame] | 3097 | int r; |
| 3098 | |
Archit Taneja | 1ffefe7 | 2011-05-12 17:26:24 +0530 | [diff] [blame] | 3099 | r = dsi_vc_dcs_write_nosync(dssdev, channel, data, len); |
Tomi Valkeinen | 3de7a1d | 2009-10-28 11:59:56 +0200 | [diff] [blame] | 3100 | if (r) |
Tomi Valkeinen | 5d68e03 | 2010-02-26 11:32:56 +0200 | [diff] [blame] | 3101 | goto err; |
Tomi Valkeinen | 3de7a1d | 2009-10-28 11:59:56 +0200 | [diff] [blame] | 3102 | |
Archit Taneja | 1ffefe7 | 2011-05-12 17:26:24 +0530 | [diff] [blame] | 3103 | r = dsi_vc_send_bta_sync(dssdev, channel); |
Tomi Valkeinen | 5d68e03 | 2010-02-26 11:32:56 +0200 | [diff] [blame] | 3104 | if (r) |
| 3105 | goto err; |
Tomi Valkeinen | 3de7a1d | 2009-10-28 11:59:56 +0200 | [diff] [blame] | 3106 | |
Archit Taneja | a72b64b | 2011-05-12 17:26:26 +0530 | [diff] [blame] | 3107 | /* RX_FIFO_NOT_EMPTY */ |
| 3108 | if (REG_GET(dsidev, DSI_VC_CTRL(channel), 20, 20)) { |
Tomi Valkeinen | b63ac1e | 2010-04-09 13:20:57 +0300 | [diff] [blame] | 3109 | DSSERR("rx fifo not empty after write, dumping data:\n"); |
Archit Taneja | a72b64b | 2011-05-12 17:26:26 +0530 | [diff] [blame] | 3110 | dsi_vc_flush_receive_data(dsidev, channel); |
Tomi Valkeinen | b63ac1e | 2010-04-09 13:20:57 +0300 | [diff] [blame] | 3111 | r = -EIO; |
| 3112 | goto err; |
| 3113 | } |
| 3114 | |
Tomi Valkeinen | 5d68e03 | 2010-02-26 11:32:56 +0200 | [diff] [blame] | 3115 | return 0; |
| 3116 | err: |
| 3117 | DSSERR("dsi_vc_dcs_write(ch %d, cmd 0x%02x, len %d) failed\n", |
| 3118 | channel, data[0], len); |
Tomi Valkeinen | 3de7a1d | 2009-10-28 11:59:56 +0200 | [diff] [blame] | 3119 | return r; |
| 3120 | } |
| 3121 | EXPORT_SYMBOL(dsi_vc_dcs_write); |
| 3122 | |
Archit Taneja | 1ffefe7 | 2011-05-12 17:26:24 +0530 | [diff] [blame] | 3123 | int dsi_vc_dcs_write_0(struct omap_dss_device *dssdev, int channel, u8 dcs_cmd) |
Tomi Valkeinen | 828c48f | 2009-12-16 14:53:15 +0200 | [diff] [blame] | 3124 | { |
Archit Taneja | 1ffefe7 | 2011-05-12 17:26:24 +0530 | [diff] [blame] | 3125 | return dsi_vc_dcs_write(dssdev, channel, &dcs_cmd, 1); |
Tomi Valkeinen | 828c48f | 2009-12-16 14:53:15 +0200 | [diff] [blame] | 3126 | } |
| 3127 | EXPORT_SYMBOL(dsi_vc_dcs_write_0); |
| 3128 | |
Archit Taneja | 1ffefe7 | 2011-05-12 17:26:24 +0530 | [diff] [blame] | 3129 | int dsi_vc_dcs_write_1(struct omap_dss_device *dssdev, int channel, u8 dcs_cmd, |
| 3130 | u8 param) |
Tomi Valkeinen | 828c48f | 2009-12-16 14:53:15 +0200 | [diff] [blame] | 3131 | { |
| 3132 | u8 buf[2]; |
| 3133 | buf[0] = dcs_cmd; |
| 3134 | buf[1] = param; |
Archit Taneja | 1ffefe7 | 2011-05-12 17:26:24 +0530 | [diff] [blame] | 3135 | return dsi_vc_dcs_write(dssdev, channel, buf, 2); |
Tomi Valkeinen | 828c48f | 2009-12-16 14:53:15 +0200 | [diff] [blame] | 3136 | } |
| 3137 | EXPORT_SYMBOL(dsi_vc_dcs_write_1); |
| 3138 | |
Archit Taneja | 1ffefe7 | 2011-05-12 17:26:24 +0530 | [diff] [blame] | 3139 | int dsi_vc_dcs_read(struct omap_dss_device *dssdev, int channel, u8 dcs_cmd, |
| 3140 | u8 *buf, int buflen) |
Tomi Valkeinen | 3de7a1d | 2009-10-28 11:59:56 +0200 | [diff] [blame] | 3141 | { |
Archit Taneja | a72b64b | 2011-05-12 17:26:26 +0530 | [diff] [blame] | 3142 | struct platform_device *dsidev = dsi_get_dsidev_from_dssdev(dssdev); |
Archit Taneja | f1da39d | 2011-05-12 17:26:27 +0530 | [diff] [blame] | 3143 | struct dsi_data *dsi = dsi_get_dsidrv_data(dsidev); |
Tomi Valkeinen | 3de7a1d | 2009-10-28 11:59:56 +0200 | [diff] [blame] | 3144 | u32 val; |
| 3145 | u8 dt; |
| 3146 | int r; |
| 3147 | |
Archit Taneja | f1da39d | 2011-05-12 17:26:27 +0530 | [diff] [blame] | 3148 | if (dsi->debug_read) |
Tomi Valkeinen | ff90a34 | 2009-12-03 13:38:04 +0200 | [diff] [blame] | 3149 | DSSDBG("dsi_vc_dcs_read(ch%d, dcs_cmd %x)\n", channel, dcs_cmd); |
Tomi Valkeinen | 3de7a1d | 2009-10-28 11:59:56 +0200 | [diff] [blame] | 3150 | |
Archit Taneja | 7a7c48f | 2011-08-25 18:25:03 +0530 | [diff] [blame] | 3151 | r = dsi_vc_send_short(dsidev, channel, MIPI_DSI_DCS_READ, dcs_cmd, 0); |
Tomi Valkeinen | 3de7a1d | 2009-10-28 11:59:56 +0200 | [diff] [blame] | 3152 | if (r) |
Tomi Valkeinen | 5d68e03 | 2010-02-26 11:32:56 +0200 | [diff] [blame] | 3153 | goto err; |
Tomi Valkeinen | 3de7a1d | 2009-10-28 11:59:56 +0200 | [diff] [blame] | 3154 | |
Archit Taneja | 1ffefe7 | 2011-05-12 17:26:24 +0530 | [diff] [blame] | 3155 | r = dsi_vc_send_bta_sync(dssdev, channel); |
Tomi Valkeinen | 3de7a1d | 2009-10-28 11:59:56 +0200 | [diff] [blame] | 3156 | if (r) |
Tomi Valkeinen | 5d68e03 | 2010-02-26 11:32:56 +0200 | [diff] [blame] | 3157 | goto err; |
Tomi Valkeinen | 3de7a1d | 2009-10-28 11:59:56 +0200 | [diff] [blame] | 3158 | |
| 3159 | /* RX_FIFO_NOT_EMPTY */ |
Archit Taneja | a72b64b | 2011-05-12 17:26:26 +0530 | [diff] [blame] | 3160 | if (REG_GET(dsidev, DSI_VC_CTRL(channel), 20, 20) == 0) { |
Tomi Valkeinen | 3de7a1d | 2009-10-28 11:59:56 +0200 | [diff] [blame] | 3161 | DSSERR("RX fifo empty when trying to read.\n"); |
Tomi Valkeinen | 5d68e03 | 2010-02-26 11:32:56 +0200 | [diff] [blame] | 3162 | r = -EIO; |
| 3163 | goto err; |
Tomi Valkeinen | 3de7a1d | 2009-10-28 11:59:56 +0200 | [diff] [blame] | 3164 | } |
| 3165 | |
Archit Taneja | a72b64b | 2011-05-12 17:26:26 +0530 | [diff] [blame] | 3166 | val = dsi_read_reg(dsidev, DSI_VC_SHORT_PACKET_HEADER(channel)); |
Archit Taneja | f1da39d | 2011-05-12 17:26:27 +0530 | [diff] [blame] | 3167 | if (dsi->debug_read) |
Tomi Valkeinen | 3de7a1d | 2009-10-28 11:59:56 +0200 | [diff] [blame] | 3168 | DSSDBG("\theader: %08x\n", val); |
| 3169 | dt = FLD_GET(val, 5, 0); |
Archit Taneja | 7a7c48f | 2011-08-25 18:25:03 +0530 | [diff] [blame] | 3170 | if (dt == MIPI_DSI_RX_ACKNOWLEDGE_AND_ERROR_REPORT) { |
Tomi Valkeinen | 3de7a1d | 2009-10-28 11:59:56 +0200 | [diff] [blame] | 3171 | u16 err = FLD_GET(val, 23, 8); |
| 3172 | dsi_show_rx_ack_with_err(err); |
Tomi Valkeinen | 5d68e03 | 2010-02-26 11:32:56 +0200 | [diff] [blame] | 3173 | r = -EIO; |
| 3174 | goto err; |
Tomi Valkeinen | 3de7a1d | 2009-10-28 11:59:56 +0200 | [diff] [blame] | 3175 | |
Archit Taneja | 7a7c48f | 2011-08-25 18:25:03 +0530 | [diff] [blame] | 3176 | } else if (dt == MIPI_DSI_RX_DCS_SHORT_READ_RESPONSE_1BYTE) { |
Tomi Valkeinen | 3de7a1d | 2009-10-28 11:59:56 +0200 | [diff] [blame] | 3177 | u8 data = FLD_GET(val, 15, 8); |
Archit Taneja | f1da39d | 2011-05-12 17:26:27 +0530 | [diff] [blame] | 3178 | if (dsi->debug_read) |
Tomi Valkeinen | 3de7a1d | 2009-10-28 11:59:56 +0200 | [diff] [blame] | 3179 | DSSDBG("\tDCS short response, 1 byte: %02x\n", data); |
| 3180 | |
Tomi Valkeinen | 5d68e03 | 2010-02-26 11:32:56 +0200 | [diff] [blame] | 3181 | if (buflen < 1) { |
| 3182 | r = -EIO; |
| 3183 | goto err; |
| 3184 | } |
Tomi Valkeinen | 3de7a1d | 2009-10-28 11:59:56 +0200 | [diff] [blame] | 3185 | |
| 3186 | buf[0] = data; |
| 3187 | |
| 3188 | return 1; |
Archit Taneja | 7a7c48f | 2011-08-25 18:25:03 +0530 | [diff] [blame] | 3189 | } else if (dt == MIPI_DSI_RX_DCS_SHORT_READ_RESPONSE_2BYTE) { |
Tomi Valkeinen | 3de7a1d | 2009-10-28 11:59:56 +0200 | [diff] [blame] | 3190 | u16 data = FLD_GET(val, 23, 8); |
Archit Taneja | f1da39d | 2011-05-12 17:26:27 +0530 | [diff] [blame] | 3191 | if (dsi->debug_read) |
Tomi Valkeinen | 3de7a1d | 2009-10-28 11:59:56 +0200 | [diff] [blame] | 3192 | DSSDBG("\tDCS short response, 2 byte: %04x\n", data); |
| 3193 | |
Tomi Valkeinen | 5d68e03 | 2010-02-26 11:32:56 +0200 | [diff] [blame] | 3194 | if (buflen < 2) { |
| 3195 | r = -EIO; |
| 3196 | goto err; |
| 3197 | } |
Tomi Valkeinen | 3de7a1d | 2009-10-28 11:59:56 +0200 | [diff] [blame] | 3198 | |
| 3199 | buf[0] = data & 0xff; |
| 3200 | buf[1] = (data >> 8) & 0xff; |
| 3201 | |
| 3202 | return 2; |
Archit Taneja | 7a7c48f | 2011-08-25 18:25:03 +0530 | [diff] [blame] | 3203 | } else if (dt == MIPI_DSI_RX_DCS_LONG_READ_RESPONSE) { |
Tomi Valkeinen | 3de7a1d | 2009-10-28 11:59:56 +0200 | [diff] [blame] | 3204 | int w; |
| 3205 | int len = FLD_GET(val, 23, 8); |
Archit Taneja | f1da39d | 2011-05-12 17:26:27 +0530 | [diff] [blame] | 3206 | if (dsi->debug_read) |
Tomi Valkeinen | 3de7a1d | 2009-10-28 11:59:56 +0200 | [diff] [blame] | 3207 | DSSDBG("\tDCS long response, len %d\n", len); |
| 3208 | |
Tomi Valkeinen | 5d68e03 | 2010-02-26 11:32:56 +0200 | [diff] [blame] | 3209 | if (len > buflen) { |
| 3210 | r = -EIO; |
| 3211 | goto err; |
| 3212 | } |
Tomi Valkeinen | 3de7a1d | 2009-10-28 11:59:56 +0200 | [diff] [blame] | 3213 | |
| 3214 | /* two byte checksum ends the packet, not included in len */ |
| 3215 | for (w = 0; w < len + 2;) { |
| 3216 | int b; |
Archit Taneja | a72b64b | 2011-05-12 17:26:26 +0530 | [diff] [blame] | 3217 | val = dsi_read_reg(dsidev, |
| 3218 | DSI_VC_SHORT_PACKET_HEADER(channel)); |
Archit Taneja | f1da39d | 2011-05-12 17:26:27 +0530 | [diff] [blame] | 3219 | if (dsi->debug_read) |
Tomi Valkeinen | 3de7a1d | 2009-10-28 11:59:56 +0200 | [diff] [blame] | 3220 | DSSDBG("\t\t%02x %02x %02x %02x\n", |
| 3221 | (val >> 0) & 0xff, |
| 3222 | (val >> 8) & 0xff, |
| 3223 | (val >> 16) & 0xff, |
| 3224 | (val >> 24) & 0xff); |
| 3225 | |
| 3226 | for (b = 0; b < 4; ++b) { |
| 3227 | if (w < len) |
| 3228 | buf[w] = (val >> (b * 8)) & 0xff; |
| 3229 | /* we discard the 2 byte checksum */ |
| 3230 | ++w; |
| 3231 | } |
| 3232 | } |
| 3233 | |
| 3234 | return len; |
Tomi Valkeinen | 3de7a1d | 2009-10-28 11:59:56 +0200 | [diff] [blame] | 3235 | } else { |
| 3236 | DSSERR("\tunknown datatype 0x%02x\n", dt); |
Tomi Valkeinen | 5d68e03 | 2010-02-26 11:32:56 +0200 | [diff] [blame] | 3237 | r = -EIO; |
| 3238 | goto err; |
Tomi Valkeinen | 3de7a1d | 2009-10-28 11:59:56 +0200 | [diff] [blame] | 3239 | } |
Tomi Valkeinen | 5d68e03 | 2010-02-26 11:32:56 +0200 | [diff] [blame] | 3240 | |
| 3241 | BUG(); |
| 3242 | err: |
| 3243 | DSSERR("dsi_vc_dcs_read(ch %d, cmd 0x%02x) failed\n", |
| 3244 | channel, dcs_cmd); |
| 3245 | return r; |
| 3246 | |
Tomi Valkeinen | 3de7a1d | 2009-10-28 11:59:56 +0200 | [diff] [blame] | 3247 | } |
| 3248 | EXPORT_SYMBOL(dsi_vc_dcs_read); |
| 3249 | |
Archit Taneja | 1ffefe7 | 2011-05-12 17:26:24 +0530 | [diff] [blame] | 3250 | int dsi_vc_dcs_read_1(struct omap_dss_device *dssdev, int channel, u8 dcs_cmd, |
| 3251 | u8 *data) |
Tomi Valkeinen | 828c48f | 2009-12-16 14:53:15 +0200 | [diff] [blame] | 3252 | { |
| 3253 | int r; |
| 3254 | |
Archit Taneja | 1ffefe7 | 2011-05-12 17:26:24 +0530 | [diff] [blame] | 3255 | r = dsi_vc_dcs_read(dssdev, channel, dcs_cmd, data, 1); |
Tomi Valkeinen | 828c48f | 2009-12-16 14:53:15 +0200 | [diff] [blame] | 3256 | |
| 3257 | if (r < 0) |
| 3258 | return r; |
| 3259 | |
| 3260 | if (r != 1) |
| 3261 | return -EIO; |
| 3262 | |
| 3263 | return 0; |
| 3264 | } |
| 3265 | EXPORT_SYMBOL(dsi_vc_dcs_read_1); |
Tomi Valkeinen | 3de7a1d | 2009-10-28 11:59:56 +0200 | [diff] [blame] | 3266 | |
Archit Taneja | 1ffefe7 | 2011-05-12 17:26:24 +0530 | [diff] [blame] | 3267 | int dsi_vc_dcs_read_2(struct omap_dss_device *dssdev, int channel, u8 dcs_cmd, |
| 3268 | u8 *data1, u8 *data2) |
Tomi Valkeinen | 53055aa | 2010-02-25 11:38:13 +0200 | [diff] [blame] | 3269 | { |
Tomi Valkeinen | 0c244f7 | 2010-06-09 15:19:29 +0300 | [diff] [blame] | 3270 | u8 buf[2]; |
Tomi Valkeinen | 53055aa | 2010-02-25 11:38:13 +0200 | [diff] [blame] | 3271 | int r; |
| 3272 | |
Archit Taneja | 1ffefe7 | 2011-05-12 17:26:24 +0530 | [diff] [blame] | 3273 | r = dsi_vc_dcs_read(dssdev, channel, dcs_cmd, buf, 2); |
Tomi Valkeinen | 53055aa | 2010-02-25 11:38:13 +0200 | [diff] [blame] | 3274 | |
| 3275 | if (r < 0) |
| 3276 | return r; |
| 3277 | |
| 3278 | if (r != 2) |
| 3279 | return -EIO; |
| 3280 | |
Tomi Valkeinen | 0c244f7 | 2010-06-09 15:19:29 +0300 | [diff] [blame] | 3281 | *data1 = buf[0]; |
| 3282 | *data2 = buf[1]; |
| 3283 | |
Tomi Valkeinen | 53055aa | 2010-02-25 11:38:13 +0200 | [diff] [blame] | 3284 | return 0; |
| 3285 | } |
| 3286 | EXPORT_SYMBOL(dsi_vc_dcs_read_2); |
| 3287 | |
Archit Taneja | 1ffefe7 | 2011-05-12 17:26:24 +0530 | [diff] [blame] | 3288 | int dsi_vc_set_max_rx_packet_size(struct omap_dss_device *dssdev, int channel, |
| 3289 | u16 len) |
Tomi Valkeinen | 3de7a1d | 2009-10-28 11:59:56 +0200 | [diff] [blame] | 3290 | { |
Archit Taneja | a72b64b | 2011-05-12 17:26:26 +0530 | [diff] [blame] | 3291 | struct platform_device *dsidev = dsi_get_dsidev_from_dssdev(dssdev); |
| 3292 | |
Archit Taneja | 7a7c48f | 2011-08-25 18:25:03 +0530 | [diff] [blame] | 3293 | return dsi_vc_send_short(dsidev, channel, |
| 3294 | MIPI_DSI_SET_MAXIMUM_RETURN_PACKET_SIZE, len, 0); |
Tomi Valkeinen | 3de7a1d | 2009-10-28 11:59:56 +0200 | [diff] [blame] | 3295 | } |
| 3296 | EXPORT_SYMBOL(dsi_vc_set_max_rx_packet_size); |
| 3297 | |
Archit Taneja | a72b64b | 2011-05-12 17:26:26 +0530 | [diff] [blame] | 3298 | static int dsi_enter_ulps(struct platform_device *dsidev) |
Tomi Valkeinen | 40885ab | 2010-07-28 15:53:38 +0300 | [diff] [blame] | 3299 | { |
Archit Taneja | f1da39d | 2011-05-12 17:26:27 +0530 | [diff] [blame] | 3300 | struct dsi_data *dsi = dsi_get_dsidrv_data(dsidev); |
Tomi Valkeinen | 40885ab | 2010-07-28 15:53:38 +0300 | [diff] [blame] | 3301 | DECLARE_COMPLETION_ONSTACK(completion); |
| 3302 | int r; |
| 3303 | |
| 3304 | DSSDBGF(); |
| 3305 | |
Archit Taneja | a72b64b | 2011-05-12 17:26:26 +0530 | [diff] [blame] | 3306 | WARN_ON(!dsi_bus_is_locked(dsidev)); |
Tomi Valkeinen | 40885ab | 2010-07-28 15:53:38 +0300 | [diff] [blame] | 3307 | |
Archit Taneja | f1da39d | 2011-05-12 17:26:27 +0530 | [diff] [blame] | 3308 | WARN_ON(dsi->ulps_enabled); |
Tomi Valkeinen | 40885ab | 2010-07-28 15:53:38 +0300 | [diff] [blame] | 3309 | |
Archit Taneja | f1da39d | 2011-05-12 17:26:27 +0530 | [diff] [blame] | 3310 | if (dsi->ulps_enabled) |
Tomi Valkeinen | 40885ab | 2010-07-28 15:53:38 +0300 | [diff] [blame] | 3311 | return 0; |
| 3312 | |
Archit Taneja | a72b64b | 2011-05-12 17:26:26 +0530 | [diff] [blame] | 3313 | if (REG_GET(dsidev, DSI_CLK_CTRL, 13, 13)) { |
Tomi Valkeinen | 40885ab | 2010-07-28 15:53:38 +0300 | [diff] [blame] | 3314 | DSSERR("DDR_CLK_ALWAYS_ON enabled when entering ULPS\n"); |
| 3315 | return -EIO; |
| 3316 | } |
| 3317 | |
Archit Taneja | a72b64b | 2011-05-12 17:26:26 +0530 | [diff] [blame] | 3318 | dsi_sync_vc(dsidev, 0); |
| 3319 | dsi_sync_vc(dsidev, 1); |
| 3320 | dsi_sync_vc(dsidev, 2); |
| 3321 | dsi_sync_vc(dsidev, 3); |
Tomi Valkeinen | 40885ab | 2010-07-28 15:53:38 +0300 | [diff] [blame] | 3322 | |
Archit Taneja | a72b64b | 2011-05-12 17:26:26 +0530 | [diff] [blame] | 3323 | dsi_force_tx_stop_mode_io(dsidev); |
Tomi Valkeinen | 40885ab | 2010-07-28 15:53:38 +0300 | [diff] [blame] | 3324 | |
Archit Taneja | a72b64b | 2011-05-12 17:26:26 +0530 | [diff] [blame] | 3325 | dsi_vc_enable(dsidev, 0, false); |
| 3326 | dsi_vc_enable(dsidev, 1, false); |
| 3327 | dsi_vc_enable(dsidev, 2, false); |
| 3328 | dsi_vc_enable(dsidev, 3, false); |
Tomi Valkeinen | 40885ab | 2010-07-28 15:53:38 +0300 | [diff] [blame] | 3329 | |
Archit Taneja | a72b64b | 2011-05-12 17:26:26 +0530 | [diff] [blame] | 3330 | if (REG_GET(dsidev, DSI_COMPLEXIO_CFG2, 16, 16)) { /* HS_BUSY */ |
Tomi Valkeinen | 40885ab | 2010-07-28 15:53:38 +0300 | [diff] [blame] | 3331 | DSSERR("HS busy when enabling ULPS\n"); |
| 3332 | return -EIO; |
| 3333 | } |
| 3334 | |
Archit Taneja | a72b64b | 2011-05-12 17:26:26 +0530 | [diff] [blame] | 3335 | if (REG_GET(dsidev, DSI_COMPLEXIO_CFG2, 17, 17)) { /* LP_BUSY */ |
Tomi Valkeinen | 40885ab | 2010-07-28 15:53:38 +0300 | [diff] [blame] | 3336 | DSSERR("LP busy when enabling ULPS\n"); |
| 3337 | return -EIO; |
| 3338 | } |
| 3339 | |
Archit Taneja | a72b64b | 2011-05-12 17:26:26 +0530 | [diff] [blame] | 3340 | r = dsi_register_isr_cio(dsidev, dsi_completion_handler, &completion, |
Tomi Valkeinen | 40885ab | 2010-07-28 15:53:38 +0300 | [diff] [blame] | 3341 | DSI_CIO_IRQ_ULPSACTIVENOT_ALL0); |
| 3342 | if (r) |
| 3343 | return r; |
| 3344 | |
| 3345 | /* Assert TxRequestEsc for data lanes and TxUlpsClk for clk lane */ |
| 3346 | /* LANEx_ULPS_SIG2 */ |
Archit Taneja | a72b64b | 2011-05-12 17:26:26 +0530 | [diff] [blame] | 3347 | REG_FLD_MOD(dsidev, DSI_COMPLEXIO_CFG2, (1 << 0) | (1 << 1) | (1 << 2), |
| 3348 | 7, 5); |
Tomi Valkeinen | 40885ab | 2010-07-28 15:53:38 +0300 | [diff] [blame] | 3349 | |
| 3350 | if (wait_for_completion_timeout(&completion, |
| 3351 | msecs_to_jiffies(1000)) == 0) { |
| 3352 | DSSERR("ULPS enable timeout\n"); |
| 3353 | r = -EIO; |
| 3354 | goto err; |
| 3355 | } |
| 3356 | |
Archit Taneja | a72b64b | 2011-05-12 17:26:26 +0530 | [diff] [blame] | 3357 | dsi_unregister_isr_cio(dsidev, dsi_completion_handler, &completion, |
Tomi Valkeinen | 40885ab | 2010-07-28 15:53:38 +0300 | [diff] [blame] | 3358 | DSI_CIO_IRQ_ULPSACTIVENOT_ALL0); |
| 3359 | |
Tomi Valkeinen | 8ef0e61 | 2011-05-31 16:55:47 +0300 | [diff] [blame] | 3360 | /* Reset LANEx_ULPS_SIG2 */ |
| 3361 | REG_FLD_MOD(dsidev, DSI_COMPLEXIO_CFG2, (0 << 0) | (0 << 1) | (0 << 2), |
| 3362 | 7, 5); |
| 3363 | |
Archit Taneja | a72b64b | 2011-05-12 17:26:26 +0530 | [diff] [blame] | 3364 | dsi_cio_power(dsidev, DSI_COMPLEXIO_POWER_ULPS); |
Tomi Valkeinen | 40885ab | 2010-07-28 15:53:38 +0300 | [diff] [blame] | 3365 | |
Archit Taneja | a72b64b | 2011-05-12 17:26:26 +0530 | [diff] [blame] | 3366 | dsi_if_enable(dsidev, false); |
Tomi Valkeinen | 40885ab | 2010-07-28 15:53:38 +0300 | [diff] [blame] | 3367 | |
Archit Taneja | f1da39d | 2011-05-12 17:26:27 +0530 | [diff] [blame] | 3368 | dsi->ulps_enabled = true; |
Tomi Valkeinen | 40885ab | 2010-07-28 15:53:38 +0300 | [diff] [blame] | 3369 | |
| 3370 | return 0; |
| 3371 | |
| 3372 | err: |
Archit Taneja | a72b64b | 2011-05-12 17:26:26 +0530 | [diff] [blame] | 3373 | dsi_unregister_isr_cio(dsidev, dsi_completion_handler, &completion, |
Tomi Valkeinen | 40885ab | 2010-07-28 15:53:38 +0300 | [diff] [blame] | 3374 | DSI_CIO_IRQ_ULPSACTIVENOT_ALL0); |
| 3375 | return r; |
| 3376 | } |
| 3377 | |
Archit Taneja | a72b64b | 2011-05-12 17:26:26 +0530 | [diff] [blame] | 3378 | static void dsi_set_lp_rx_timeout(struct platform_device *dsidev, |
| 3379 | unsigned ticks, bool x4, bool x16) |
Tomi Valkeinen | 3de7a1d | 2009-10-28 11:59:56 +0200 | [diff] [blame] | 3380 | { |
Tomi Valkeinen | 3de7a1d | 2009-10-28 11:59:56 +0200 | [diff] [blame] | 3381 | unsigned long fck; |
Tomi Valkeinen | 4ffa357 | 2010-04-12 10:40:12 +0300 | [diff] [blame] | 3382 | unsigned long total_ticks; |
| 3383 | u32 r; |
| 3384 | |
| 3385 | BUG_ON(ticks > 0x1fff); |
Tomi Valkeinen | 3de7a1d | 2009-10-28 11:59:56 +0200 | [diff] [blame] | 3386 | |
| 3387 | /* ticks in DSI_FCK */ |
Archit Taneja | a72b64b | 2011-05-12 17:26:26 +0530 | [diff] [blame] | 3388 | fck = dsi_fclk_rate(dsidev); |
Tomi Valkeinen | 3de7a1d | 2009-10-28 11:59:56 +0200 | [diff] [blame] | 3389 | |
Archit Taneja | a72b64b | 2011-05-12 17:26:26 +0530 | [diff] [blame] | 3390 | r = dsi_read_reg(dsidev, DSI_TIMING2); |
Tomi Valkeinen | 3de7a1d | 2009-10-28 11:59:56 +0200 | [diff] [blame] | 3391 | r = FLD_MOD(r, 1, 15, 15); /* LP_RX_TO */ |
Tomi Valkeinen | 4ffa357 | 2010-04-12 10:40:12 +0300 | [diff] [blame] | 3392 | r = FLD_MOD(r, x16 ? 1 : 0, 14, 14); /* LP_RX_TO_X16 */ |
| 3393 | r = FLD_MOD(r, x4 ? 1 : 0, 13, 13); /* LP_RX_TO_X4 */ |
Tomi Valkeinen | 3de7a1d | 2009-10-28 11:59:56 +0200 | [diff] [blame] | 3394 | r = FLD_MOD(r, ticks, 12, 0); /* LP_RX_COUNTER */ |
Archit Taneja | a72b64b | 2011-05-12 17:26:26 +0530 | [diff] [blame] | 3395 | dsi_write_reg(dsidev, DSI_TIMING2, r); |
Tomi Valkeinen | 3de7a1d | 2009-10-28 11:59:56 +0200 | [diff] [blame] | 3396 | |
Tomi Valkeinen | 4ffa357 | 2010-04-12 10:40:12 +0300 | [diff] [blame] | 3397 | total_ticks = ticks * (x16 ? 16 : 1) * (x4 ? 4 : 1); |
| 3398 | |
| 3399 | DSSDBG("LP_RX_TO %lu ticks (%#x%s%s) = %lu ns\n", |
| 3400 | total_ticks, |
| 3401 | ticks, x4 ? " x4" : "", x16 ? " x16" : "", |
| 3402 | (total_ticks * 1000) / (fck / 1000 / 1000)); |
Tomi Valkeinen | 3de7a1d | 2009-10-28 11:59:56 +0200 | [diff] [blame] | 3403 | } |
| 3404 | |
Archit Taneja | a72b64b | 2011-05-12 17:26:26 +0530 | [diff] [blame] | 3405 | static void dsi_set_ta_timeout(struct platform_device *dsidev, unsigned ticks, |
| 3406 | bool x8, bool x16) |
Tomi Valkeinen | 3de7a1d | 2009-10-28 11:59:56 +0200 | [diff] [blame] | 3407 | { |
Tomi Valkeinen | 3de7a1d | 2009-10-28 11:59:56 +0200 | [diff] [blame] | 3408 | unsigned long fck; |
Tomi Valkeinen | 4ffa357 | 2010-04-12 10:40:12 +0300 | [diff] [blame] | 3409 | unsigned long total_ticks; |
| 3410 | u32 r; |
| 3411 | |
| 3412 | BUG_ON(ticks > 0x1fff); |
Tomi Valkeinen | 3de7a1d | 2009-10-28 11:59:56 +0200 | [diff] [blame] | 3413 | |
| 3414 | /* ticks in DSI_FCK */ |
Archit Taneja | a72b64b | 2011-05-12 17:26:26 +0530 | [diff] [blame] | 3415 | fck = dsi_fclk_rate(dsidev); |
Tomi Valkeinen | 3de7a1d | 2009-10-28 11:59:56 +0200 | [diff] [blame] | 3416 | |
Archit Taneja | a72b64b | 2011-05-12 17:26:26 +0530 | [diff] [blame] | 3417 | r = dsi_read_reg(dsidev, DSI_TIMING1); |
Tomi Valkeinen | 3de7a1d | 2009-10-28 11:59:56 +0200 | [diff] [blame] | 3418 | r = FLD_MOD(r, 1, 31, 31); /* TA_TO */ |
Tomi Valkeinen | 4ffa357 | 2010-04-12 10:40:12 +0300 | [diff] [blame] | 3419 | r = FLD_MOD(r, x16 ? 1 : 0, 30, 30); /* TA_TO_X16 */ |
| 3420 | r = FLD_MOD(r, x8 ? 1 : 0, 29, 29); /* TA_TO_X8 */ |
Tomi Valkeinen | 3de7a1d | 2009-10-28 11:59:56 +0200 | [diff] [blame] | 3421 | r = FLD_MOD(r, ticks, 28, 16); /* TA_TO_COUNTER */ |
Archit Taneja | a72b64b | 2011-05-12 17:26:26 +0530 | [diff] [blame] | 3422 | dsi_write_reg(dsidev, DSI_TIMING1, r); |
Tomi Valkeinen | 3de7a1d | 2009-10-28 11:59:56 +0200 | [diff] [blame] | 3423 | |
Tomi Valkeinen | 4ffa357 | 2010-04-12 10:40:12 +0300 | [diff] [blame] | 3424 | total_ticks = ticks * (x16 ? 16 : 1) * (x8 ? 8 : 1); |
| 3425 | |
| 3426 | DSSDBG("TA_TO %lu ticks (%#x%s%s) = %lu ns\n", |
| 3427 | total_ticks, |
| 3428 | ticks, x8 ? " x8" : "", x16 ? " x16" : "", |
| 3429 | (total_ticks * 1000) / (fck / 1000 / 1000)); |
Tomi Valkeinen | 3de7a1d | 2009-10-28 11:59:56 +0200 | [diff] [blame] | 3430 | } |
| 3431 | |
Archit Taneja | a72b64b | 2011-05-12 17:26:26 +0530 | [diff] [blame] | 3432 | static void dsi_set_stop_state_counter(struct platform_device *dsidev, |
| 3433 | unsigned ticks, bool x4, bool x16) |
Tomi Valkeinen | 3de7a1d | 2009-10-28 11:59:56 +0200 | [diff] [blame] | 3434 | { |
Tomi Valkeinen | 3de7a1d | 2009-10-28 11:59:56 +0200 | [diff] [blame] | 3435 | unsigned long fck; |
Tomi Valkeinen | 4ffa357 | 2010-04-12 10:40:12 +0300 | [diff] [blame] | 3436 | unsigned long total_ticks; |
| 3437 | u32 r; |
| 3438 | |
| 3439 | BUG_ON(ticks > 0x1fff); |
Tomi Valkeinen | 3de7a1d | 2009-10-28 11:59:56 +0200 | [diff] [blame] | 3440 | |
| 3441 | /* ticks in DSI_FCK */ |
Archit Taneja | a72b64b | 2011-05-12 17:26:26 +0530 | [diff] [blame] | 3442 | fck = dsi_fclk_rate(dsidev); |
Tomi Valkeinen | 3de7a1d | 2009-10-28 11:59:56 +0200 | [diff] [blame] | 3443 | |
Archit Taneja | a72b64b | 2011-05-12 17:26:26 +0530 | [diff] [blame] | 3444 | r = dsi_read_reg(dsidev, DSI_TIMING1); |
Tomi Valkeinen | 3de7a1d | 2009-10-28 11:59:56 +0200 | [diff] [blame] | 3445 | r = FLD_MOD(r, 1, 15, 15); /* FORCE_TX_STOP_MODE_IO */ |
Tomi Valkeinen | 4ffa357 | 2010-04-12 10:40:12 +0300 | [diff] [blame] | 3446 | r = FLD_MOD(r, x16 ? 1 : 0, 14, 14); /* STOP_STATE_X16_IO */ |
| 3447 | r = FLD_MOD(r, x4 ? 1 : 0, 13, 13); /* STOP_STATE_X4_IO */ |
Tomi Valkeinen | 3de7a1d | 2009-10-28 11:59:56 +0200 | [diff] [blame] | 3448 | r = FLD_MOD(r, ticks, 12, 0); /* STOP_STATE_COUNTER_IO */ |
Archit Taneja | a72b64b | 2011-05-12 17:26:26 +0530 | [diff] [blame] | 3449 | dsi_write_reg(dsidev, DSI_TIMING1, r); |
Tomi Valkeinen | 3de7a1d | 2009-10-28 11:59:56 +0200 | [diff] [blame] | 3450 | |
Tomi Valkeinen | 4ffa357 | 2010-04-12 10:40:12 +0300 | [diff] [blame] | 3451 | total_ticks = ticks * (x16 ? 16 : 1) * (x4 ? 4 : 1); |
| 3452 | |
| 3453 | DSSDBG("STOP_STATE_COUNTER %lu ticks (%#x%s%s) = %lu ns\n", |
| 3454 | total_ticks, |
| 3455 | ticks, x4 ? " x4" : "", x16 ? " x16" : "", |
| 3456 | (total_ticks * 1000) / (fck / 1000 / 1000)); |
Tomi Valkeinen | 3de7a1d | 2009-10-28 11:59:56 +0200 | [diff] [blame] | 3457 | } |
| 3458 | |
Archit Taneja | a72b64b | 2011-05-12 17:26:26 +0530 | [diff] [blame] | 3459 | static void dsi_set_hs_tx_timeout(struct platform_device *dsidev, |
| 3460 | unsigned ticks, bool x4, bool x16) |
Tomi Valkeinen | 3de7a1d | 2009-10-28 11:59:56 +0200 | [diff] [blame] | 3461 | { |
Tomi Valkeinen | 3de7a1d | 2009-10-28 11:59:56 +0200 | [diff] [blame] | 3462 | unsigned long fck; |
Tomi Valkeinen | 4ffa357 | 2010-04-12 10:40:12 +0300 | [diff] [blame] | 3463 | unsigned long total_ticks; |
| 3464 | u32 r; |
| 3465 | |
| 3466 | BUG_ON(ticks > 0x1fff); |
Tomi Valkeinen | 3de7a1d | 2009-10-28 11:59:56 +0200 | [diff] [blame] | 3467 | |
| 3468 | /* ticks in TxByteClkHS */ |
Archit Taneja | a72b64b | 2011-05-12 17:26:26 +0530 | [diff] [blame] | 3469 | fck = dsi_get_txbyteclkhs(dsidev); |
Tomi Valkeinen | 3de7a1d | 2009-10-28 11:59:56 +0200 | [diff] [blame] | 3470 | |
Archit Taneja | a72b64b | 2011-05-12 17:26:26 +0530 | [diff] [blame] | 3471 | r = dsi_read_reg(dsidev, DSI_TIMING2); |
Tomi Valkeinen | 3de7a1d | 2009-10-28 11:59:56 +0200 | [diff] [blame] | 3472 | r = FLD_MOD(r, 1, 31, 31); /* HS_TX_TO */ |
Tomi Valkeinen | 4ffa357 | 2010-04-12 10:40:12 +0300 | [diff] [blame] | 3473 | r = FLD_MOD(r, x16 ? 1 : 0, 30, 30); /* HS_TX_TO_X16 */ |
| 3474 | r = FLD_MOD(r, x4 ? 1 : 0, 29, 29); /* HS_TX_TO_X8 (4 really) */ |
Tomi Valkeinen | 3de7a1d | 2009-10-28 11:59:56 +0200 | [diff] [blame] | 3475 | r = FLD_MOD(r, ticks, 28, 16); /* HS_TX_TO_COUNTER */ |
Archit Taneja | a72b64b | 2011-05-12 17:26:26 +0530 | [diff] [blame] | 3476 | dsi_write_reg(dsidev, DSI_TIMING2, r); |
Tomi Valkeinen | 3de7a1d | 2009-10-28 11:59:56 +0200 | [diff] [blame] | 3477 | |
Tomi Valkeinen | 4ffa357 | 2010-04-12 10:40:12 +0300 | [diff] [blame] | 3478 | total_ticks = ticks * (x16 ? 16 : 1) * (x4 ? 4 : 1); |
| 3479 | |
| 3480 | DSSDBG("HS_TX_TO %lu ticks (%#x%s%s) = %lu ns\n", |
| 3481 | total_ticks, |
| 3482 | ticks, x4 ? " x4" : "", x16 ? " x16" : "", |
| 3483 | (total_ticks * 1000) / (fck / 1000 / 1000)); |
Tomi Valkeinen | 3de7a1d | 2009-10-28 11:59:56 +0200 | [diff] [blame] | 3484 | } |
| 3485 | static int dsi_proto_config(struct omap_dss_device *dssdev) |
| 3486 | { |
Archit Taneja | a72b64b | 2011-05-12 17:26:26 +0530 | [diff] [blame] | 3487 | struct platform_device *dsidev = dsi_get_dsidev_from_dssdev(dssdev); |
Tomi Valkeinen | 3de7a1d | 2009-10-28 11:59:56 +0200 | [diff] [blame] | 3488 | u32 r; |
| 3489 | int buswidth = 0; |
| 3490 | |
Archit Taneja | a72b64b | 2011-05-12 17:26:26 +0530 | [diff] [blame] | 3491 | dsi_config_tx_fifo(dsidev, DSI_FIFO_SIZE_32, |
Tomi Valkeinen | dd8079d | 2009-12-16 16:49:03 +0200 | [diff] [blame] | 3492 | DSI_FIFO_SIZE_32, |
| 3493 | DSI_FIFO_SIZE_32, |
| 3494 | DSI_FIFO_SIZE_32); |
Tomi Valkeinen | 3de7a1d | 2009-10-28 11:59:56 +0200 | [diff] [blame] | 3495 | |
Archit Taneja | a72b64b | 2011-05-12 17:26:26 +0530 | [diff] [blame] | 3496 | dsi_config_rx_fifo(dsidev, DSI_FIFO_SIZE_32, |
Tomi Valkeinen | dd8079d | 2009-12-16 16:49:03 +0200 | [diff] [blame] | 3497 | DSI_FIFO_SIZE_32, |
| 3498 | DSI_FIFO_SIZE_32, |
| 3499 | DSI_FIFO_SIZE_32); |
Tomi Valkeinen | 3de7a1d | 2009-10-28 11:59:56 +0200 | [diff] [blame] | 3500 | |
| 3501 | /* XXX what values for the timeouts? */ |
Archit Taneja | a72b64b | 2011-05-12 17:26:26 +0530 | [diff] [blame] | 3502 | dsi_set_stop_state_counter(dsidev, 0x1000, false, false); |
| 3503 | dsi_set_ta_timeout(dsidev, 0x1fff, true, true); |
| 3504 | dsi_set_lp_rx_timeout(dsidev, 0x1fff, true, true); |
| 3505 | dsi_set_hs_tx_timeout(dsidev, 0x1fff, true, true); |
Tomi Valkeinen | 3de7a1d | 2009-10-28 11:59:56 +0200 | [diff] [blame] | 3506 | |
| 3507 | switch (dssdev->ctrl.pixel_size) { |
| 3508 | case 16: |
| 3509 | buswidth = 0; |
| 3510 | break; |
| 3511 | case 18: |
| 3512 | buswidth = 1; |
| 3513 | break; |
| 3514 | case 24: |
| 3515 | buswidth = 2; |
| 3516 | break; |
| 3517 | default: |
| 3518 | BUG(); |
| 3519 | } |
| 3520 | |
Archit Taneja | a72b64b | 2011-05-12 17:26:26 +0530 | [diff] [blame] | 3521 | r = dsi_read_reg(dsidev, DSI_CTRL); |
Tomi Valkeinen | 3de7a1d | 2009-10-28 11:59:56 +0200 | [diff] [blame] | 3522 | r = FLD_MOD(r, 1, 1, 1); /* CS_RX_EN */ |
| 3523 | r = FLD_MOD(r, 1, 2, 2); /* ECC_RX_EN */ |
| 3524 | r = FLD_MOD(r, 1, 3, 3); /* TX_FIFO_ARBITRATION */ |
| 3525 | r = FLD_MOD(r, 1, 4, 4); /* VP_CLK_RATIO, always 1, see errata*/ |
| 3526 | r = FLD_MOD(r, buswidth, 7, 6); /* VP_DATA_BUS_WIDTH */ |
| 3527 | r = FLD_MOD(r, 0, 8, 8); /* VP_CLK_POL */ |
| 3528 | r = FLD_MOD(r, 2, 13, 12); /* LINE_BUFFER, 2 lines */ |
| 3529 | r = FLD_MOD(r, 1, 14, 14); /* TRIGGER_RESET_MODE */ |
| 3530 | r = FLD_MOD(r, 1, 19, 19); /* EOT_ENABLE */ |
Archit Taneja | 9613c02 | 2011-03-22 06:33:36 -0500 | [diff] [blame] | 3531 | if (!dss_has_feature(FEAT_DSI_DCS_CMD_CONFIG_VC)) { |
| 3532 | r = FLD_MOD(r, 1, 24, 24); /* DCS_CMD_ENABLE */ |
| 3533 | /* DCS_CMD_CODE, 1=start, 0=continue */ |
| 3534 | r = FLD_MOD(r, 0, 25, 25); |
| 3535 | } |
Tomi Valkeinen | 3de7a1d | 2009-10-28 11:59:56 +0200 | [diff] [blame] | 3536 | |
Archit Taneja | a72b64b | 2011-05-12 17:26:26 +0530 | [diff] [blame] | 3537 | dsi_write_reg(dsidev, DSI_CTRL, r); |
Tomi Valkeinen | 3de7a1d | 2009-10-28 11:59:56 +0200 | [diff] [blame] | 3538 | |
Archit Taneja | a72b64b | 2011-05-12 17:26:26 +0530 | [diff] [blame] | 3539 | dsi_vc_initial_config(dsidev, 0); |
| 3540 | dsi_vc_initial_config(dsidev, 1); |
| 3541 | dsi_vc_initial_config(dsidev, 2); |
| 3542 | dsi_vc_initial_config(dsidev, 3); |
Tomi Valkeinen | 3de7a1d | 2009-10-28 11:59:56 +0200 | [diff] [blame] | 3543 | |
| 3544 | return 0; |
| 3545 | } |
| 3546 | |
| 3547 | static void dsi_proto_timings(struct omap_dss_device *dssdev) |
| 3548 | { |
Archit Taneja | a72b64b | 2011-05-12 17:26:26 +0530 | [diff] [blame] | 3549 | struct platform_device *dsidev = dsi_get_dsidev_from_dssdev(dssdev); |
Tomi Valkeinen | 3de7a1d | 2009-10-28 11:59:56 +0200 | [diff] [blame] | 3550 | unsigned tlpx, tclk_zero, tclk_prepare, tclk_trail; |
| 3551 | unsigned tclk_pre, tclk_post; |
| 3552 | unsigned ths_prepare, ths_prepare_ths_zero, ths_zero; |
| 3553 | unsigned ths_trail, ths_exit; |
| 3554 | unsigned ddr_clk_pre, ddr_clk_post; |
| 3555 | unsigned enter_hs_mode_lat, exit_hs_mode_lat; |
| 3556 | unsigned ths_eot; |
| 3557 | u32 r; |
| 3558 | |
Archit Taneja | a72b64b | 2011-05-12 17:26:26 +0530 | [diff] [blame] | 3559 | r = dsi_read_reg(dsidev, DSI_DSIPHY_CFG0); |
Tomi Valkeinen | 3de7a1d | 2009-10-28 11:59:56 +0200 | [diff] [blame] | 3560 | ths_prepare = FLD_GET(r, 31, 24); |
| 3561 | ths_prepare_ths_zero = FLD_GET(r, 23, 16); |
| 3562 | ths_zero = ths_prepare_ths_zero - ths_prepare; |
| 3563 | ths_trail = FLD_GET(r, 15, 8); |
| 3564 | ths_exit = FLD_GET(r, 7, 0); |
| 3565 | |
Archit Taneja | a72b64b | 2011-05-12 17:26:26 +0530 | [diff] [blame] | 3566 | r = dsi_read_reg(dsidev, DSI_DSIPHY_CFG1); |
Tomi Valkeinen | 3de7a1d | 2009-10-28 11:59:56 +0200 | [diff] [blame] | 3567 | tlpx = FLD_GET(r, 22, 16) * 2; |
| 3568 | tclk_trail = FLD_GET(r, 15, 8); |
| 3569 | tclk_zero = FLD_GET(r, 7, 0); |
| 3570 | |
Archit Taneja | a72b64b | 2011-05-12 17:26:26 +0530 | [diff] [blame] | 3571 | r = dsi_read_reg(dsidev, DSI_DSIPHY_CFG2); |
Tomi Valkeinen | 3de7a1d | 2009-10-28 11:59:56 +0200 | [diff] [blame] | 3572 | tclk_prepare = FLD_GET(r, 7, 0); |
| 3573 | |
| 3574 | /* min 8*UI */ |
| 3575 | tclk_pre = 20; |
| 3576 | /* min 60ns + 52*UI */ |
Archit Taneja | a72b64b | 2011-05-12 17:26:26 +0530 | [diff] [blame] | 3577 | tclk_post = ns2ddr(dsidev, 60) + 26; |
Tomi Valkeinen | 3de7a1d | 2009-10-28 11:59:56 +0200 | [diff] [blame] | 3578 | |
Archit Taneja | 75d7247 | 2011-05-16 15:17:08 +0530 | [diff] [blame] | 3579 | ths_eot = DIV_ROUND_UP(4, dsi_get_num_data_lanes_dssdev(dssdev)); |
Tomi Valkeinen | 3de7a1d | 2009-10-28 11:59:56 +0200 | [diff] [blame] | 3580 | |
| 3581 | ddr_clk_pre = DIV_ROUND_UP(tclk_pre + tlpx + tclk_zero + tclk_prepare, |
| 3582 | 4); |
| 3583 | ddr_clk_post = DIV_ROUND_UP(tclk_post + ths_trail, 4) + ths_eot; |
| 3584 | |
| 3585 | BUG_ON(ddr_clk_pre == 0 || ddr_clk_pre > 255); |
| 3586 | BUG_ON(ddr_clk_post == 0 || ddr_clk_post > 255); |
| 3587 | |
Archit Taneja | a72b64b | 2011-05-12 17:26:26 +0530 | [diff] [blame] | 3588 | r = dsi_read_reg(dsidev, DSI_CLK_TIMING); |
Tomi Valkeinen | 3de7a1d | 2009-10-28 11:59:56 +0200 | [diff] [blame] | 3589 | r = FLD_MOD(r, ddr_clk_pre, 15, 8); |
| 3590 | r = FLD_MOD(r, ddr_clk_post, 7, 0); |
Archit Taneja | a72b64b | 2011-05-12 17:26:26 +0530 | [diff] [blame] | 3591 | dsi_write_reg(dsidev, DSI_CLK_TIMING, r); |
Tomi Valkeinen | 3de7a1d | 2009-10-28 11:59:56 +0200 | [diff] [blame] | 3592 | |
| 3593 | DSSDBG("ddr_clk_pre %u, ddr_clk_post %u\n", |
| 3594 | ddr_clk_pre, |
| 3595 | ddr_clk_post); |
| 3596 | |
| 3597 | enter_hs_mode_lat = 1 + DIV_ROUND_UP(tlpx, 4) + |
| 3598 | DIV_ROUND_UP(ths_prepare, 4) + |
| 3599 | DIV_ROUND_UP(ths_zero + 3, 4); |
| 3600 | |
| 3601 | exit_hs_mode_lat = DIV_ROUND_UP(ths_trail + ths_exit, 4) + 1 + ths_eot; |
| 3602 | |
| 3603 | r = FLD_VAL(enter_hs_mode_lat, 31, 16) | |
| 3604 | FLD_VAL(exit_hs_mode_lat, 15, 0); |
Archit Taneja | a72b64b | 2011-05-12 17:26:26 +0530 | [diff] [blame] | 3605 | dsi_write_reg(dsidev, DSI_VM_TIMING7, r); |
Tomi Valkeinen | 3de7a1d | 2009-10-28 11:59:56 +0200 | [diff] [blame] | 3606 | |
| 3607 | DSSDBG("enter_hs_mode_lat %u, exit_hs_mode_lat %u\n", |
| 3608 | enter_hs_mode_lat, exit_hs_mode_lat); |
| 3609 | } |
| 3610 | |
Tomi Valkeinen | 3de7a1d | 2009-10-28 11:59:56 +0200 | [diff] [blame] | 3611 | static void dsi_update_screen_dispc(struct omap_dss_device *dssdev, |
| 3612 | u16 x, u16 y, u16 w, u16 h) |
| 3613 | { |
Archit Taneja | a72b64b | 2011-05-12 17:26:26 +0530 | [diff] [blame] | 3614 | struct platform_device *dsidev = dsi_get_dsidev_from_dssdev(dssdev); |
Archit Taneja | f1da39d | 2011-05-12 17:26:27 +0530 | [diff] [blame] | 3615 | struct dsi_data *dsi = dsi_get_dsidrv_data(dsidev); |
Tomi Valkeinen | 3de7a1d | 2009-10-28 11:59:56 +0200 | [diff] [blame] | 3616 | unsigned bytespp; |
| 3617 | unsigned bytespl; |
| 3618 | unsigned bytespf; |
| 3619 | unsigned total_len; |
| 3620 | unsigned packet_payload; |
| 3621 | unsigned packet_len; |
| 3622 | u32 l; |
Tomi Valkeinen | 0f16aa0 | 2010-04-12 09:57:19 +0300 | [diff] [blame] | 3623 | int r; |
Archit Taneja | f1da39d | 2011-05-12 17:26:27 +0530 | [diff] [blame] | 3624 | const unsigned channel = dsi->update_channel; |
Archit Taneja | 0c65622 | 2011-05-16 15:17:09 +0530 | [diff] [blame] | 3625 | const unsigned line_buf_size = dsi_get_line_buf_size(dsidev); |
Tomi Valkeinen | 3de7a1d | 2009-10-28 11:59:56 +0200 | [diff] [blame] | 3626 | |
Tomi Valkeinen | 446f7bf | 2010-01-11 16:12:31 +0200 | [diff] [blame] | 3627 | DSSDBG("dsi_update_screen_dispc(%d,%d %dx%d)\n", |
| 3628 | x, y, w, h); |
Tomi Valkeinen | 3de7a1d | 2009-10-28 11:59:56 +0200 | [diff] [blame] | 3629 | |
Archit Taneja | d604914 | 2011-08-22 11:58:08 +0530 | [diff] [blame] | 3630 | dsi_vc_config_source(dsidev, channel, DSI_VC_SOURCE_VP); |
Tomi Valkeinen | 18946f6 | 2010-01-12 14:16:41 +0200 | [diff] [blame] | 3631 | |
Tomi Valkeinen | 3de7a1d | 2009-10-28 11:59:56 +0200 | [diff] [blame] | 3632 | bytespp = dssdev->ctrl.pixel_size / 8; |
| 3633 | bytespl = w * bytespp; |
| 3634 | bytespf = bytespl * h; |
| 3635 | |
| 3636 | /* NOTE: packet_payload has to be equal to N * bytespl, where N is |
| 3637 | * number of lines in a packet. See errata about VP_CLK_RATIO */ |
| 3638 | |
| 3639 | if (bytespf < line_buf_size) |
| 3640 | packet_payload = bytespf; |
| 3641 | else |
| 3642 | packet_payload = (line_buf_size) / bytespl * bytespl; |
| 3643 | |
| 3644 | packet_len = packet_payload + 1; /* 1 byte for DCS cmd */ |
| 3645 | total_len = (bytespf / packet_payload) * packet_len; |
| 3646 | |
| 3647 | if (bytespf % packet_payload) |
| 3648 | total_len += (bytespf % packet_payload) + 1; |
| 3649 | |
Tomi Valkeinen | 3de7a1d | 2009-10-28 11:59:56 +0200 | [diff] [blame] | 3650 | l = FLD_VAL(total_len, 23, 0); /* TE_SIZE */ |
Archit Taneja | a72b64b | 2011-05-12 17:26:26 +0530 | [diff] [blame] | 3651 | dsi_write_reg(dsidev, DSI_VC_TE(channel), l); |
Tomi Valkeinen | 3de7a1d | 2009-10-28 11:59:56 +0200 | [diff] [blame] | 3652 | |
Archit Taneja | 7a7c48f | 2011-08-25 18:25:03 +0530 | [diff] [blame] | 3653 | dsi_vc_write_long_header(dsidev, channel, MIPI_DSI_DCS_LONG_WRITE, |
Archit Taneja | a72b64b | 2011-05-12 17:26:26 +0530 | [diff] [blame] | 3654 | packet_len, 0); |
Tomi Valkeinen | 3de7a1d | 2009-10-28 11:59:56 +0200 | [diff] [blame] | 3655 | |
Archit Taneja | f1da39d | 2011-05-12 17:26:27 +0530 | [diff] [blame] | 3656 | if (dsi->te_enabled) |
Tomi Valkeinen | 3de7a1d | 2009-10-28 11:59:56 +0200 | [diff] [blame] | 3657 | l = FLD_MOD(l, 1, 30, 30); /* TE_EN */ |
| 3658 | else |
| 3659 | l = FLD_MOD(l, 1, 31, 31); /* TE_START */ |
Archit Taneja | a72b64b | 2011-05-12 17:26:26 +0530 | [diff] [blame] | 3660 | dsi_write_reg(dsidev, DSI_VC_TE(channel), l); |
Tomi Valkeinen | 3de7a1d | 2009-10-28 11:59:56 +0200 | [diff] [blame] | 3661 | |
| 3662 | /* We put SIDLEMODE to no-idle for the duration of the transfer, |
| 3663 | * because DSS interrupts are not capable of waking up the CPU and the |
| 3664 | * framedone interrupt could be delayed for quite a long time. I think |
| 3665 | * the same goes for any DSS interrupts, but for some reason I have not |
| 3666 | * seen the problem anywhere else than here. |
| 3667 | */ |
| 3668 | dispc_disable_sidle(); |
| 3669 | |
Archit Taneja | a72b64b | 2011-05-12 17:26:26 +0530 | [diff] [blame] | 3670 | dsi_perf_mark_start(dsidev); |
Tomi Valkeinen | 18946f6 | 2010-01-12 14:16:41 +0200 | [diff] [blame] | 3671 | |
Archit Taneja | 49dbf58 | 2011-05-16 15:17:07 +0530 | [diff] [blame] | 3672 | r = schedule_delayed_work(&dsi->framedone_timeout_work, |
| 3673 | msecs_to_jiffies(250)); |
Tomi Valkeinen | 0f16aa0 | 2010-04-12 09:57:19 +0300 | [diff] [blame] | 3674 | BUG_ON(r == 0); |
Tomi Valkeinen | 18946f6 | 2010-01-12 14:16:41 +0200 | [diff] [blame] | 3675 | |
Tomi Valkeinen | 3de7a1d | 2009-10-28 11:59:56 +0200 | [diff] [blame] | 3676 | dss_start_update(dssdev); |
| 3677 | |
Archit Taneja | f1da39d | 2011-05-12 17:26:27 +0530 | [diff] [blame] | 3678 | if (dsi->te_enabled) { |
Tomi Valkeinen | 3de7a1d | 2009-10-28 11:59:56 +0200 | [diff] [blame] | 3679 | /* disable LP_RX_TO, so that we can receive TE. Time to wait |
| 3680 | * for TE is longer than the timer allows */ |
Archit Taneja | a72b64b | 2011-05-12 17:26:26 +0530 | [diff] [blame] | 3681 | REG_FLD_MOD(dsidev, DSI_TIMING2, 0, 15, 15); /* LP_RX_TO */ |
Tomi Valkeinen | 3de7a1d | 2009-10-28 11:59:56 +0200 | [diff] [blame] | 3682 | |
Archit Taneja | a72b64b | 2011-05-12 17:26:26 +0530 | [diff] [blame] | 3683 | dsi_vc_send_bta(dsidev, channel); |
Tomi Valkeinen | 3de7a1d | 2009-10-28 11:59:56 +0200 | [diff] [blame] | 3684 | |
| 3685 | #ifdef DSI_CATCH_MISSING_TE |
Archit Taneja | f1da39d | 2011-05-12 17:26:27 +0530 | [diff] [blame] | 3686 | mod_timer(&dsi->te_timer, jiffies + msecs_to_jiffies(250)); |
Tomi Valkeinen | 3de7a1d | 2009-10-28 11:59:56 +0200 | [diff] [blame] | 3687 | #endif |
| 3688 | } |
| 3689 | } |
| 3690 | |
| 3691 | #ifdef DSI_CATCH_MISSING_TE |
| 3692 | static void dsi_te_timeout(unsigned long arg) |
| 3693 | { |
| 3694 | DSSERR("TE not received for 250ms!\n"); |
| 3695 | } |
| 3696 | #endif |
| 3697 | |
Archit Taneja | a72b64b | 2011-05-12 17:26:26 +0530 | [diff] [blame] | 3698 | static void dsi_handle_framedone(struct platform_device *dsidev, int error) |
Tomi Valkeinen | 18946f6 | 2010-01-12 14:16:41 +0200 | [diff] [blame] | 3699 | { |
Archit Taneja | f1da39d | 2011-05-12 17:26:27 +0530 | [diff] [blame] | 3700 | struct dsi_data *dsi = dsi_get_dsidrv_data(dsidev); |
| 3701 | |
Tomi Valkeinen | ab83b14 | 2010-06-09 15:31:01 +0300 | [diff] [blame] | 3702 | /* SIDLEMODE back to smart-idle */ |
| 3703 | dispc_enable_sidle(); |
| 3704 | |
Archit Taneja | f1da39d | 2011-05-12 17:26:27 +0530 | [diff] [blame] | 3705 | if (dsi->te_enabled) { |
Tomi Valkeinen | ab83b14 | 2010-06-09 15:31:01 +0300 | [diff] [blame] | 3706 | /* enable LP_RX_TO again after the TE */ |
Archit Taneja | a72b64b | 2011-05-12 17:26:26 +0530 | [diff] [blame] | 3707 | REG_FLD_MOD(dsidev, DSI_TIMING2, 1, 15, 15); /* LP_RX_TO */ |
Tomi Valkeinen | ab83b14 | 2010-06-09 15:31:01 +0300 | [diff] [blame] | 3708 | } |
| 3709 | |
Archit Taneja | f1da39d | 2011-05-12 17:26:27 +0530 | [diff] [blame] | 3710 | dsi->framedone_callback(error, dsi->framedone_data); |
Tomi Valkeinen | ab83b14 | 2010-06-09 15:31:01 +0300 | [diff] [blame] | 3711 | |
| 3712 | if (!error) |
Archit Taneja | a72b64b | 2011-05-12 17:26:26 +0530 | [diff] [blame] | 3713 | dsi_perf_show(dsidev, "DISPC"); |
Tomi Valkeinen | ab83b14 | 2010-06-09 15:31:01 +0300 | [diff] [blame] | 3714 | } |
| 3715 | |
| 3716 | static void dsi_framedone_timeout_work_callback(struct work_struct *work) |
| 3717 | { |
Archit Taneja | f1da39d | 2011-05-12 17:26:27 +0530 | [diff] [blame] | 3718 | struct dsi_data *dsi = container_of(work, struct dsi_data, |
| 3719 | framedone_timeout_work.work); |
Tomi Valkeinen | 0f16aa0 | 2010-04-12 09:57:19 +0300 | [diff] [blame] | 3720 | /* XXX While extremely unlikely, we could get FRAMEDONE interrupt after |
| 3721 | * 250ms which would conflict with this timeout work. What should be |
| 3722 | * done is first cancel the transfer on the HW, and then cancel the |
Tomi Valkeinen | ab83b14 | 2010-06-09 15:31:01 +0300 | [diff] [blame] | 3723 | * possibly scheduled framedone work. However, cancelling the transfer |
| 3724 | * on the HW is buggy, and would probably require resetting the whole |
| 3725 | * DSI */ |
Tomi Valkeinen | 0f16aa0 | 2010-04-12 09:57:19 +0300 | [diff] [blame] | 3726 | |
Tomi Valkeinen | ab83b14 | 2010-06-09 15:31:01 +0300 | [diff] [blame] | 3727 | DSSERR("Framedone not received for 250ms!\n"); |
Tomi Valkeinen | 18946f6 | 2010-01-12 14:16:41 +0200 | [diff] [blame] | 3728 | |
Archit Taneja | f1da39d | 2011-05-12 17:26:27 +0530 | [diff] [blame] | 3729 | dsi_handle_framedone(dsi->pdev, -ETIMEDOUT); |
Tomi Valkeinen | 18946f6 | 2010-01-12 14:16:41 +0200 | [diff] [blame] | 3730 | } |
| 3731 | |
Tomi Valkeinen | ab83b14 | 2010-06-09 15:31:01 +0300 | [diff] [blame] | 3732 | static void dsi_framedone_irq_callback(void *data, u32 mask) |
Tomi Valkeinen | 3de7a1d | 2009-10-28 11:59:56 +0200 | [diff] [blame] | 3733 | { |
Archit Taneja | a72b64b | 2011-05-12 17:26:26 +0530 | [diff] [blame] | 3734 | struct omap_dss_device *dssdev = (struct omap_dss_device *) data; |
| 3735 | struct platform_device *dsidev = dsi_get_dsidev_from_dssdev(dssdev); |
Archit Taneja | f1da39d | 2011-05-12 17:26:27 +0530 | [diff] [blame] | 3736 | struct dsi_data *dsi = dsi_get_dsidrv_data(dsidev); |
| 3737 | |
Tomi Valkeinen | ab83b14 | 2010-06-09 15:31:01 +0300 | [diff] [blame] | 3738 | /* Note: We get FRAMEDONE when DISPC has finished sending pixels and |
| 3739 | * turns itself off. However, DSI still has the pixels in its buffers, |
| 3740 | * and is sending the data. |
| 3741 | */ |
Tomi Valkeinen | 3de7a1d | 2009-10-28 11:59:56 +0200 | [diff] [blame] | 3742 | |
Archit Taneja | f1da39d | 2011-05-12 17:26:27 +0530 | [diff] [blame] | 3743 | __cancel_delayed_work(&dsi->framedone_timeout_work); |
Tomi Valkeinen | 3de7a1d | 2009-10-28 11:59:56 +0200 | [diff] [blame] | 3744 | |
Archit Taneja | a72b64b | 2011-05-12 17:26:26 +0530 | [diff] [blame] | 3745 | dsi_handle_framedone(dsidev, 0); |
Tomi Valkeinen | 3de7a1d | 2009-10-28 11:59:56 +0200 | [diff] [blame] | 3746 | |
Archit Taneja | cf398fb | 2011-03-23 09:59:34 +0000 | [diff] [blame] | 3747 | #ifdef CONFIG_OMAP2_DSS_FAKE_VSYNC |
| 3748 | dispc_fake_vsync_irq(); |
| 3749 | #endif |
Tomi Valkeinen | 18946f6 | 2010-01-12 14:16:41 +0200 | [diff] [blame] | 3750 | } |
Tomi Valkeinen | 3de7a1d | 2009-10-28 11:59:56 +0200 | [diff] [blame] | 3751 | |
Tomi Valkeinen | 18946f6 | 2010-01-12 14:16:41 +0200 | [diff] [blame] | 3752 | int omap_dsi_prepare_update(struct omap_dss_device *dssdev, |
Tomi Valkeinen | 26a8c25 | 2010-06-09 15:31:34 +0300 | [diff] [blame] | 3753 | u16 *x, u16 *y, u16 *w, u16 *h, |
| 3754 | bool enlarge_update_area) |
Tomi Valkeinen | 18946f6 | 2010-01-12 14:16:41 +0200 | [diff] [blame] | 3755 | { |
Archit Taneja | a72b64b | 2011-05-12 17:26:26 +0530 | [diff] [blame] | 3756 | struct platform_device *dsidev = dsi_get_dsidev_from_dssdev(dssdev); |
Tomi Valkeinen | 18946f6 | 2010-01-12 14:16:41 +0200 | [diff] [blame] | 3757 | u16 dw, dh; |
Tomi Valkeinen | 3de7a1d | 2009-10-28 11:59:56 +0200 | [diff] [blame] | 3758 | |
Tomi Valkeinen | 18946f6 | 2010-01-12 14:16:41 +0200 | [diff] [blame] | 3759 | dssdev->driver->get_resolution(dssdev, &dw, &dh); |
Tomi Valkeinen | 3de7a1d | 2009-10-28 11:59:56 +0200 | [diff] [blame] | 3760 | |
Tomi Valkeinen | 18946f6 | 2010-01-12 14:16:41 +0200 | [diff] [blame] | 3761 | if (*x > dw || *y > dh) |
| 3762 | return -EINVAL; |
Tomi Valkeinen | 3de7a1d | 2009-10-28 11:59:56 +0200 | [diff] [blame] | 3763 | |
Tomi Valkeinen | 18946f6 | 2010-01-12 14:16:41 +0200 | [diff] [blame] | 3764 | if (*x + *w > dw) |
| 3765 | return -EINVAL; |
Tomi Valkeinen | 3de7a1d | 2009-10-28 11:59:56 +0200 | [diff] [blame] | 3766 | |
Tomi Valkeinen | 18946f6 | 2010-01-12 14:16:41 +0200 | [diff] [blame] | 3767 | if (*y + *h > dh) |
| 3768 | return -EINVAL; |
Tomi Valkeinen | 3de7a1d | 2009-10-28 11:59:56 +0200 | [diff] [blame] | 3769 | |
Tomi Valkeinen | 18946f6 | 2010-01-12 14:16:41 +0200 | [diff] [blame] | 3770 | if (*w == 1) |
| 3771 | return -EINVAL; |
Tomi Valkeinen | 3de7a1d | 2009-10-28 11:59:56 +0200 | [diff] [blame] | 3772 | |
Tomi Valkeinen | 18946f6 | 2010-01-12 14:16:41 +0200 | [diff] [blame] | 3773 | if (*w == 0 || *h == 0) |
| 3774 | return -EINVAL; |
Tomi Valkeinen | 3de7a1d | 2009-10-28 11:59:56 +0200 | [diff] [blame] | 3775 | |
Archit Taneja | a72b64b | 2011-05-12 17:26:26 +0530 | [diff] [blame] | 3776 | dsi_perf_mark_setup(dsidev); |
Tomi Valkeinen | 3de7a1d | 2009-10-28 11:59:56 +0200 | [diff] [blame] | 3777 | |
Tomi Valkeinen | 4a9e78a | 2011-08-15 11:22:21 +0300 | [diff] [blame] | 3778 | dss_setup_partial_planes(dssdev, x, y, w, h, |
| 3779 | enlarge_update_area); |
Tomi Valkeinen | 26d9dd0 | 2011-08-16 13:45:15 +0300 | [diff] [blame] | 3780 | dispc_mgr_set_lcd_size(dssdev->manager->id, *w, *h); |
Tomi Valkeinen | 3de7a1d | 2009-10-28 11:59:56 +0200 | [diff] [blame] | 3781 | |
Tomi Valkeinen | 3de7a1d | 2009-10-28 11:59:56 +0200 | [diff] [blame] | 3782 | return 0; |
| 3783 | } |
Tomi Valkeinen | 18946f6 | 2010-01-12 14:16:41 +0200 | [diff] [blame] | 3784 | EXPORT_SYMBOL(omap_dsi_prepare_update); |
Tomi Valkeinen | 3de7a1d | 2009-10-28 11:59:56 +0200 | [diff] [blame] | 3785 | |
Tomi Valkeinen | 18946f6 | 2010-01-12 14:16:41 +0200 | [diff] [blame] | 3786 | int omap_dsi_update(struct omap_dss_device *dssdev, |
| 3787 | int channel, |
| 3788 | u16 x, u16 y, u16 w, u16 h, |
| 3789 | void (*callback)(int, void *), void *data) |
| 3790 | { |
Archit Taneja | a72b64b | 2011-05-12 17:26:26 +0530 | [diff] [blame] | 3791 | struct platform_device *dsidev = dsi_get_dsidev_from_dssdev(dssdev); |
Archit Taneja | f1da39d | 2011-05-12 17:26:27 +0530 | [diff] [blame] | 3792 | struct dsi_data *dsi = dsi_get_dsidrv_data(dsidev); |
Archit Taneja | a72b64b | 2011-05-12 17:26:26 +0530 | [diff] [blame] | 3793 | |
Archit Taneja | f1da39d | 2011-05-12 17:26:27 +0530 | [diff] [blame] | 3794 | dsi->update_channel = channel; |
Tomi Valkeinen | 3de7a1d | 2009-10-28 11:59:56 +0200 | [diff] [blame] | 3795 | |
Tomi Valkeinen | a602771 | 2010-05-25 17:01:28 +0300 | [diff] [blame] | 3796 | /* OMAP DSS cannot send updates of odd widths. |
| 3797 | * omap_dsi_prepare_update() makes the widths even, but add a BUG_ON |
| 3798 | * here to make sure we catch erroneous updates. Otherwise we'll only |
| 3799 | * see rather obscure HW error happening, as DSS halts. */ |
| 3800 | BUG_ON(x % 2 == 1); |
| 3801 | |
Tomi Valkeinen | 4a9e78a | 2011-08-15 11:22:21 +0300 | [diff] [blame] | 3802 | dsi->framedone_callback = callback; |
| 3803 | dsi->framedone_data = data; |
Tomi Valkeinen | 18946f6 | 2010-01-12 14:16:41 +0200 | [diff] [blame] | 3804 | |
Tomi Valkeinen | 4a9e78a | 2011-08-15 11:22:21 +0300 | [diff] [blame] | 3805 | dsi->update_region.x = x; |
| 3806 | dsi->update_region.y = y; |
| 3807 | dsi->update_region.w = w; |
| 3808 | dsi->update_region.h = h; |
| 3809 | dsi->update_region.device = dssdev; |
Tomi Valkeinen | 18946f6 | 2010-01-12 14:16:41 +0200 | [diff] [blame] | 3810 | |
Tomi Valkeinen | 4a9e78a | 2011-08-15 11:22:21 +0300 | [diff] [blame] | 3811 | dsi_update_screen_dispc(dssdev, x, y, w, h); |
Tomi Valkeinen | 18946f6 | 2010-01-12 14:16:41 +0200 | [diff] [blame] | 3812 | |
| 3813 | return 0; |
| 3814 | } |
| 3815 | EXPORT_SYMBOL(omap_dsi_update); |
Tomi Valkeinen | 3de7a1d | 2009-10-28 11:59:56 +0200 | [diff] [blame] | 3816 | |
| 3817 | /* Display funcs */ |
| 3818 | |
| 3819 | static int dsi_display_init_dispc(struct omap_dss_device *dssdev) |
| 3820 | { |
| 3821 | int r; |
Archit Taneja | 5a8b572 | 2011-05-12 17:26:29 +0530 | [diff] [blame] | 3822 | u32 irq; |
| 3823 | |
| 3824 | irq = dssdev->manager->id == OMAP_DSS_CHANNEL_LCD ? |
| 3825 | DISPC_IRQ_FRAMEDONE : DISPC_IRQ_FRAMEDONE2; |
Tomi Valkeinen | 3de7a1d | 2009-10-28 11:59:56 +0200 | [diff] [blame] | 3826 | |
Archit Taneja | a72b64b | 2011-05-12 17:26:26 +0530 | [diff] [blame] | 3827 | r = omap_dispc_register_isr(dsi_framedone_irq_callback, (void *) dssdev, |
Archit Taneja | 5a8b572 | 2011-05-12 17:26:29 +0530 | [diff] [blame] | 3828 | irq); |
Tomi Valkeinen | 3de7a1d | 2009-10-28 11:59:56 +0200 | [diff] [blame] | 3829 | if (r) { |
| 3830 | DSSERR("can't get FRAMEDONE irq\n"); |
| 3831 | return r; |
| 3832 | } |
| 3833 | |
Tomi Valkeinen | 26d9dd0 | 2011-08-16 13:45:15 +0300 | [diff] [blame] | 3834 | dispc_mgr_set_lcd_display_type(dssdev->manager->id, |
Sumit Semwal | 64ba4f7 | 2010-12-02 11:27:10 +0000 | [diff] [blame] | 3835 | OMAP_DSS_LCD_DISPLAY_TFT); |
Tomi Valkeinen | 3de7a1d | 2009-10-28 11:59:56 +0200 | [diff] [blame] | 3836 | |
Tomi Valkeinen | 26d9dd0 | 2011-08-16 13:45:15 +0300 | [diff] [blame] | 3837 | dispc_mgr_set_parallel_interface_mode(dssdev->manager->id, |
Sumit Semwal | 64ba4f7 | 2010-12-02 11:27:10 +0000 | [diff] [blame] | 3838 | OMAP_DSS_PARALLELMODE_DSI); |
Tomi Valkeinen | 26d9dd0 | 2011-08-16 13:45:15 +0300 | [diff] [blame] | 3839 | dispc_mgr_enable_fifohandcheck(dssdev->manager->id, 1); |
Tomi Valkeinen | 3de7a1d | 2009-10-28 11:59:56 +0200 | [diff] [blame] | 3840 | |
Tomi Valkeinen | 26d9dd0 | 2011-08-16 13:45:15 +0300 | [diff] [blame] | 3841 | dispc_mgr_set_tft_data_lines(dssdev->manager->id, |
| 3842 | dssdev->ctrl.pixel_size); |
Tomi Valkeinen | 3de7a1d | 2009-10-28 11:59:56 +0200 | [diff] [blame] | 3843 | |
| 3844 | { |
| 3845 | struct omap_video_timings timings = { |
| 3846 | .hsw = 1, |
| 3847 | .hfp = 1, |
| 3848 | .hbp = 1, |
| 3849 | .vsw = 1, |
| 3850 | .vfp = 0, |
| 3851 | .vbp = 0, |
| 3852 | }; |
| 3853 | |
Tomi Valkeinen | 26d9dd0 | 2011-08-16 13:45:15 +0300 | [diff] [blame] | 3854 | dispc_mgr_set_lcd_timings(dssdev->manager->id, &timings); |
Tomi Valkeinen | 3de7a1d | 2009-10-28 11:59:56 +0200 | [diff] [blame] | 3855 | } |
| 3856 | |
| 3857 | return 0; |
| 3858 | } |
| 3859 | |
| 3860 | static void dsi_display_uninit_dispc(struct omap_dss_device *dssdev) |
| 3861 | { |
Archit Taneja | 5a8b572 | 2011-05-12 17:26:29 +0530 | [diff] [blame] | 3862 | u32 irq; |
| 3863 | |
| 3864 | irq = dssdev->manager->id == OMAP_DSS_CHANNEL_LCD ? |
| 3865 | DISPC_IRQ_FRAMEDONE : DISPC_IRQ_FRAMEDONE2; |
| 3866 | |
Archit Taneja | a72b64b | 2011-05-12 17:26:26 +0530 | [diff] [blame] | 3867 | omap_dispc_unregister_isr(dsi_framedone_irq_callback, (void *) dssdev, |
Archit Taneja | 5a8b572 | 2011-05-12 17:26:29 +0530 | [diff] [blame] | 3868 | irq); |
Tomi Valkeinen | 3de7a1d | 2009-10-28 11:59:56 +0200 | [diff] [blame] | 3869 | } |
| 3870 | |
| 3871 | static int dsi_configure_dsi_clocks(struct omap_dss_device *dssdev) |
| 3872 | { |
Archit Taneja | a72b64b | 2011-05-12 17:26:26 +0530 | [diff] [blame] | 3873 | struct platform_device *dsidev = dsi_get_dsidev_from_dssdev(dssdev); |
Tomi Valkeinen | 3de7a1d | 2009-10-28 11:59:56 +0200 | [diff] [blame] | 3874 | struct dsi_clock_info cinfo; |
| 3875 | int r; |
| 3876 | |
Archit Taneja | 1bb4783 | 2011-02-24 14:17:30 +0530 | [diff] [blame] | 3877 | /* we always use DSS_CLK_SYSCK as input clock */ |
| 3878 | cinfo.use_sys_clk = true; |
Tomi Valkeinen | c6940a3 | 2011-02-22 13:36:10 +0200 | [diff] [blame] | 3879 | cinfo.regn = dssdev->clocks.dsi.regn; |
| 3880 | cinfo.regm = dssdev->clocks.dsi.regm; |
| 3881 | cinfo.regm_dispc = dssdev->clocks.dsi.regm_dispc; |
| 3882 | cinfo.regm_dsi = dssdev->clocks.dsi.regm_dsi; |
Sumit Semwal | ff1b2cd | 2010-12-02 11:27:11 +0000 | [diff] [blame] | 3883 | r = dsi_calc_clock_rates(dssdev, &cinfo); |
Ville Syrjälä | ebf0a3f | 2010-04-22 22:50:05 +0200 | [diff] [blame] | 3884 | if (r) { |
| 3885 | DSSERR("Failed to calc dsi clocks\n"); |
Tomi Valkeinen | 3de7a1d | 2009-10-28 11:59:56 +0200 | [diff] [blame] | 3886 | return r; |
Ville Syrjälä | ebf0a3f | 2010-04-22 22:50:05 +0200 | [diff] [blame] | 3887 | } |
Tomi Valkeinen | 3de7a1d | 2009-10-28 11:59:56 +0200 | [diff] [blame] | 3888 | |
Archit Taneja | a72b64b | 2011-05-12 17:26:26 +0530 | [diff] [blame] | 3889 | r = dsi_pll_set_clock_div(dsidev, &cinfo); |
Tomi Valkeinen | 3de7a1d | 2009-10-28 11:59:56 +0200 | [diff] [blame] | 3890 | if (r) { |
| 3891 | DSSERR("Failed to set dsi clocks\n"); |
| 3892 | return r; |
| 3893 | } |
| 3894 | |
| 3895 | return 0; |
| 3896 | } |
| 3897 | |
| 3898 | static int dsi_configure_dispc_clocks(struct omap_dss_device *dssdev) |
| 3899 | { |
Archit Taneja | a72b64b | 2011-05-12 17:26:26 +0530 | [diff] [blame] | 3900 | struct platform_device *dsidev = dsi_get_dsidev_from_dssdev(dssdev); |
Tomi Valkeinen | 3de7a1d | 2009-10-28 11:59:56 +0200 | [diff] [blame] | 3901 | struct dispc_clock_info dispc_cinfo; |
| 3902 | int r; |
| 3903 | unsigned long long fck; |
| 3904 | |
Archit Taneja | a72b64b | 2011-05-12 17:26:26 +0530 | [diff] [blame] | 3905 | fck = dsi_get_pll_hsdiv_dispc_rate(dsidev); |
Tomi Valkeinen | 3de7a1d | 2009-10-28 11:59:56 +0200 | [diff] [blame] | 3906 | |
Archit Taneja | e888166 | 2011-04-12 13:52:24 +0530 | [diff] [blame] | 3907 | dispc_cinfo.lck_div = dssdev->clocks.dispc.channel.lck_div; |
| 3908 | dispc_cinfo.pck_div = dssdev->clocks.dispc.channel.pck_div; |
Tomi Valkeinen | 3de7a1d | 2009-10-28 11:59:56 +0200 | [diff] [blame] | 3909 | |
| 3910 | r = dispc_calc_clock_rates(fck, &dispc_cinfo); |
| 3911 | if (r) { |
| 3912 | DSSERR("Failed to calc dispc clocks\n"); |
| 3913 | return r; |
| 3914 | } |
| 3915 | |
Tomi Valkeinen | 26d9dd0 | 2011-08-16 13:45:15 +0300 | [diff] [blame] | 3916 | r = dispc_mgr_set_clock_div(dssdev->manager->id, &dispc_cinfo); |
Tomi Valkeinen | 3de7a1d | 2009-10-28 11:59:56 +0200 | [diff] [blame] | 3917 | if (r) { |
| 3918 | DSSERR("Failed to set dispc clocks\n"); |
| 3919 | return r; |
| 3920 | } |
| 3921 | |
| 3922 | return 0; |
| 3923 | } |
| 3924 | |
| 3925 | static int dsi_display_init_dsi(struct omap_dss_device *dssdev) |
| 3926 | { |
Archit Taneja | a72b64b | 2011-05-12 17:26:26 +0530 | [diff] [blame] | 3927 | struct platform_device *dsidev = dsi_get_dsidev_from_dssdev(dssdev); |
Archit Taneja | 5a8b572 | 2011-05-12 17:26:29 +0530 | [diff] [blame] | 3928 | int dsi_module = dsi_get_dsidev_id(dsidev); |
Tomi Valkeinen | 3de7a1d | 2009-10-28 11:59:56 +0200 | [diff] [blame] | 3929 | int r; |
| 3930 | |
Archit Taneja | a72b64b | 2011-05-12 17:26:26 +0530 | [diff] [blame] | 3931 | r = dsi_pll_init(dsidev, true, true); |
Tomi Valkeinen | 3de7a1d | 2009-10-28 11:59:56 +0200 | [diff] [blame] | 3932 | if (r) |
| 3933 | goto err0; |
| 3934 | |
| 3935 | r = dsi_configure_dsi_clocks(dssdev); |
| 3936 | if (r) |
| 3937 | goto err1; |
| 3938 | |
Archit Taneja | e888166 | 2011-04-12 13:52:24 +0530 | [diff] [blame] | 3939 | dss_select_dispc_clk_source(dssdev->clocks.dispc.dispc_fclk_src); |
Archit Taneja | 5a8b572 | 2011-05-12 17:26:29 +0530 | [diff] [blame] | 3940 | dss_select_dsi_clk_source(dsi_module, dssdev->clocks.dsi.dsi_fclk_src); |
Archit Taneja | 9613c02 | 2011-03-22 06:33:36 -0500 | [diff] [blame] | 3941 | dss_select_lcd_clk_source(dssdev->manager->id, |
Archit Taneja | e888166 | 2011-04-12 13:52:24 +0530 | [diff] [blame] | 3942 | dssdev->clocks.dispc.channel.lcd_clk_src); |
Tomi Valkeinen | 3de7a1d | 2009-10-28 11:59:56 +0200 | [diff] [blame] | 3943 | |
| 3944 | DSSDBG("PLL OK\n"); |
| 3945 | |
| 3946 | r = dsi_configure_dispc_clocks(dssdev); |
| 3947 | if (r) |
| 3948 | goto err2; |
| 3949 | |
Tomi Valkeinen | cc5c185 | 2010-10-06 15:18:13 +0300 | [diff] [blame] | 3950 | r = dsi_cio_init(dssdev); |
Tomi Valkeinen | 3de7a1d | 2009-10-28 11:59:56 +0200 | [diff] [blame] | 3951 | if (r) |
| 3952 | goto err2; |
| 3953 | |
Archit Taneja | a72b64b | 2011-05-12 17:26:26 +0530 | [diff] [blame] | 3954 | _dsi_print_reset_status(dsidev); |
Tomi Valkeinen | 3de7a1d | 2009-10-28 11:59:56 +0200 | [diff] [blame] | 3955 | |
| 3956 | dsi_proto_timings(dssdev); |
| 3957 | dsi_set_lp_clk_divisor(dssdev); |
| 3958 | |
| 3959 | if (1) |
Archit Taneja | a72b64b | 2011-05-12 17:26:26 +0530 | [diff] [blame] | 3960 | _dsi_print_reset_status(dsidev); |
Tomi Valkeinen | 3de7a1d | 2009-10-28 11:59:56 +0200 | [diff] [blame] | 3961 | |
| 3962 | r = dsi_proto_config(dssdev); |
| 3963 | if (r) |
| 3964 | goto err3; |
| 3965 | |
| 3966 | /* enable interface */ |
Archit Taneja | a72b64b | 2011-05-12 17:26:26 +0530 | [diff] [blame] | 3967 | dsi_vc_enable(dsidev, 0, 1); |
| 3968 | dsi_vc_enable(dsidev, 1, 1); |
| 3969 | dsi_vc_enable(dsidev, 2, 1); |
| 3970 | dsi_vc_enable(dsidev, 3, 1); |
| 3971 | dsi_if_enable(dsidev, 1); |
| 3972 | dsi_force_tx_stop_mode_io(dsidev); |
Tomi Valkeinen | 3de7a1d | 2009-10-28 11:59:56 +0200 | [diff] [blame] | 3973 | |
Tomi Valkeinen | 3de7a1d | 2009-10-28 11:59:56 +0200 | [diff] [blame] | 3974 | return 0; |
Tomi Valkeinen | 3de7a1d | 2009-10-28 11:59:56 +0200 | [diff] [blame] | 3975 | err3: |
Tomi Valkeinen | 5bc416c | 2011-06-15 15:21:12 +0300 | [diff] [blame] | 3976 | dsi_cio_uninit(dssdev); |
Tomi Valkeinen | 3de7a1d | 2009-10-28 11:59:56 +0200 | [diff] [blame] | 3977 | err2: |
Archit Taneja | 89a35e5 | 2011-04-12 13:52:23 +0530 | [diff] [blame] | 3978 | dss_select_dispc_clk_source(OMAP_DSS_CLK_SRC_FCK); |
Archit Taneja | 5a8b572 | 2011-05-12 17:26:29 +0530 | [diff] [blame] | 3979 | dss_select_dsi_clk_source(dsi_module, OMAP_DSS_CLK_SRC_FCK); |
Tomi Valkeinen | 5e78509 | 2011-08-10 11:25:36 +0300 | [diff] [blame] | 3980 | dss_select_lcd_clk_source(dssdev->manager->id, OMAP_DSS_CLK_SRC_FCK); |
| 3981 | |
Tomi Valkeinen | 3de7a1d | 2009-10-28 11:59:56 +0200 | [diff] [blame] | 3982 | err1: |
Archit Taneja | a72b64b | 2011-05-12 17:26:26 +0530 | [diff] [blame] | 3983 | dsi_pll_uninit(dsidev, true); |
Tomi Valkeinen | 3de7a1d | 2009-10-28 11:59:56 +0200 | [diff] [blame] | 3984 | err0: |
| 3985 | return r; |
| 3986 | } |
| 3987 | |
Tomi Valkeinen | 2a89dc1 | 2010-07-30 12:39:34 +0300 | [diff] [blame] | 3988 | static void dsi_display_uninit_dsi(struct omap_dss_device *dssdev, |
Tomi Valkeinen | 22d6d67 | 2010-10-11 11:33:30 +0300 | [diff] [blame] | 3989 | bool disconnect_lanes, bool enter_ulps) |
Tomi Valkeinen | 3de7a1d | 2009-10-28 11:59:56 +0200 | [diff] [blame] | 3990 | { |
Archit Taneja | a72b64b | 2011-05-12 17:26:26 +0530 | [diff] [blame] | 3991 | struct platform_device *dsidev = dsi_get_dsidev_from_dssdev(dssdev); |
Archit Taneja | f1da39d | 2011-05-12 17:26:27 +0530 | [diff] [blame] | 3992 | struct dsi_data *dsi = dsi_get_dsidrv_data(dsidev); |
Archit Taneja | 5a8b572 | 2011-05-12 17:26:29 +0530 | [diff] [blame] | 3993 | int dsi_module = dsi_get_dsidev_id(dsidev); |
Archit Taneja | a72b64b | 2011-05-12 17:26:26 +0530 | [diff] [blame] | 3994 | |
Archit Taneja | f1da39d | 2011-05-12 17:26:27 +0530 | [diff] [blame] | 3995 | if (enter_ulps && !dsi->ulps_enabled) |
Archit Taneja | a72b64b | 2011-05-12 17:26:26 +0530 | [diff] [blame] | 3996 | dsi_enter_ulps(dsidev); |
Tomi Valkeinen | 40885ab | 2010-07-28 15:53:38 +0300 | [diff] [blame] | 3997 | |
Ville Syrjälä | d737010 | 2010-04-22 22:50:09 +0200 | [diff] [blame] | 3998 | /* disable interface */ |
Archit Taneja | a72b64b | 2011-05-12 17:26:26 +0530 | [diff] [blame] | 3999 | dsi_if_enable(dsidev, 0); |
| 4000 | dsi_vc_enable(dsidev, 0, 0); |
| 4001 | dsi_vc_enable(dsidev, 1, 0); |
| 4002 | dsi_vc_enable(dsidev, 2, 0); |
| 4003 | dsi_vc_enable(dsidev, 3, 0); |
Ville Syrjälä | d737010 | 2010-04-22 22:50:09 +0200 | [diff] [blame] | 4004 | |
Archit Taneja | 89a35e5 | 2011-04-12 13:52:23 +0530 | [diff] [blame] | 4005 | dss_select_dispc_clk_source(OMAP_DSS_CLK_SRC_FCK); |
Archit Taneja | 5a8b572 | 2011-05-12 17:26:29 +0530 | [diff] [blame] | 4006 | dss_select_dsi_clk_source(dsi_module, OMAP_DSS_CLK_SRC_FCK); |
Tomi Valkeinen | 5e78509 | 2011-08-10 11:25:36 +0300 | [diff] [blame] | 4007 | dss_select_lcd_clk_source(dssdev->manager->id, OMAP_DSS_CLK_SRC_FCK); |
Tomi Valkeinen | 5bc416c | 2011-06-15 15:21:12 +0300 | [diff] [blame] | 4008 | dsi_cio_uninit(dssdev); |
Archit Taneja | a72b64b | 2011-05-12 17:26:26 +0530 | [diff] [blame] | 4009 | dsi_pll_uninit(dsidev, disconnect_lanes); |
Tomi Valkeinen | 3de7a1d | 2009-10-28 11:59:56 +0200 | [diff] [blame] | 4010 | } |
| 4011 | |
Tomi Valkeinen | 37ac60e | 2010-01-12 15:12:07 +0200 | [diff] [blame] | 4012 | int omapdss_dsi_display_enable(struct omap_dss_device *dssdev) |
Tomi Valkeinen | 3de7a1d | 2009-10-28 11:59:56 +0200 | [diff] [blame] | 4013 | { |
Archit Taneja | a72b64b | 2011-05-12 17:26:26 +0530 | [diff] [blame] | 4014 | struct platform_device *dsidev = dsi_get_dsidev_from_dssdev(dssdev); |
Archit Taneja | f1da39d | 2011-05-12 17:26:27 +0530 | [diff] [blame] | 4015 | struct dsi_data *dsi = dsi_get_dsidrv_data(dsidev); |
Tomi Valkeinen | 3de7a1d | 2009-10-28 11:59:56 +0200 | [diff] [blame] | 4016 | int r = 0; |
| 4017 | |
| 4018 | DSSDBG("dsi_display_enable\n"); |
| 4019 | |
Archit Taneja | a72b64b | 2011-05-12 17:26:26 +0530 | [diff] [blame] | 4020 | WARN_ON(!dsi_bus_is_locked(dsidev)); |
Tomi Valkeinen | 37ac60e | 2010-01-12 15:12:07 +0200 | [diff] [blame] | 4021 | |
Archit Taneja | f1da39d | 2011-05-12 17:26:27 +0530 | [diff] [blame] | 4022 | mutex_lock(&dsi->lock); |
Tomi Valkeinen | 3de7a1d | 2009-10-28 11:59:56 +0200 | [diff] [blame] | 4023 | |
Tomi Valkeinen | 05e1d60 | 2011-06-23 16:38:21 +0300 | [diff] [blame] | 4024 | if (dssdev->manager == NULL) { |
| 4025 | DSSERR("failed to enable display: no manager\n"); |
| 4026 | r = -ENODEV; |
| 4027 | goto err_start_dev; |
| 4028 | } |
| 4029 | |
Tomi Valkeinen | 3de7a1d | 2009-10-28 11:59:56 +0200 | [diff] [blame] | 4030 | r = omap_dss_start_device(dssdev); |
| 4031 | if (r) { |
| 4032 | DSSERR("failed to start device\n"); |
Tomi Valkeinen | 4fbafaf | 2011-05-27 10:52:19 +0300 | [diff] [blame] | 4033 | goto err_start_dev; |
Tomi Valkeinen | 3de7a1d | 2009-10-28 11:59:56 +0200 | [diff] [blame] | 4034 | } |
| 4035 | |
Tomi Valkeinen | 4fbafaf | 2011-05-27 10:52:19 +0300 | [diff] [blame] | 4036 | r = dsi_runtime_get(dsidev); |
| 4037 | if (r) |
| 4038 | goto err_get_dsi; |
| 4039 | |
Archit Taneja | a72b64b | 2011-05-12 17:26:26 +0530 | [diff] [blame] | 4040 | dsi_enable_pll_clock(dsidev, 1); |
Tomi Valkeinen | 3de7a1d | 2009-10-28 11:59:56 +0200 | [diff] [blame] | 4041 | |
Tomi Valkeinen | 4fbafaf | 2011-05-27 10:52:19 +0300 | [diff] [blame] | 4042 | _dsi_initialize_irq(dsidev); |
Tomi Valkeinen | 3de7a1d | 2009-10-28 11:59:56 +0200 | [diff] [blame] | 4043 | |
| 4044 | r = dsi_display_init_dispc(dssdev); |
| 4045 | if (r) |
Tomi Valkeinen | 4fbafaf | 2011-05-27 10:52:19 +0300 | [diff] [blame] | 4046 | goto err_init_dispc; |
Tomi Valkeinen | 3de7a1d | 2009-10-28 11:59:56 +0200 | [diff] [blame] | 4047 | |
| 4048 | r = dsi_display_init_dsi(dssdev); |
| 4049 | if (r) |
Tomi Valkeinen | 4fbafaf | 2011-05-27 10:52:19 +0300 | [diff] [blame] | 4050 | goto err_init_dsi; |
Tomi Valkeinen | 3de7a1d | 2009-10-28 11:59:56 +0200 | [diff] [blame] | 4051 | |
Archit Taneja | f1da39d | 2011-05-12 17:26:27 +0530 | [diff] [blame] | 4052 | mutex_unlock(&dsi->lock); |
Tomi Valkeinen | 3de7a1d | 2009-10-28 11:59:56 +0200 | [diff] [blame] | 4053 | |
| 4054 | return 0; |
| 4055 | |
Tomi Valkeinen | 4fbafaf | 2011-05-27 10:52:19 +0300 | [diff] [blame] | 4056 | err_init_dsi: |
Tomi Valkeinen | 37ac60e | 2010-01-12 15:12:07 +0200 | [diff] [blame] | 4057 | dsi_display_uninit_dispc(dssdev); |
Tomi Valkeinen | 4fbafaf | 2011-05-27 10:52:19 +0300 | [diff] [blame] | 4058 | err_init_dispc: |
Archit Taneja | a72b64b | 2011-05-12 17:26:26 +0530 | [diff] [blame] | 4059 | dsi_enable_pll_clock(dsidev, 0); |
Tomi Valkeinen | 4fbafaf | 2011-05-27 10:52:19 +0300 | [diff] [blame] | 4060 | dsi_runtime_put(dsidev); |
| 4061 | err_get_dsi: |
Tomi Valkeinen | 3de7a1d | 2009-10-28 11:59:56 +0200 | [diff] [blame] | 4062 | omap_dss_stop_device(dssdev); |
Tomi Valkeinen | 4fbafaf | 2011-05-27 10:52:19 +0300 | [diff] [blame] | 4063 | err_start_dev: |
Archit Taneja | f1da39d | 2011-05-12 17:26:27 +0530 | [diff] [blame] | 4064 | mutex_unlock(&dsi->lock); |
Tomi Valkeinen | 3de7a1d | 2009-10-28 11:59:56 +0200 | [diff] [blame] | 4065 | DSSDBG("dsi_display_enable FAILED\n"); |
| 4066 | return r; |
| 4067 | } |
Tomi Valkeinen | 37ac60e | 2010-01-12 15:12:07 +0200 | [diff] [blame] | 4068 | EXPORT_SYMBOL(omapdss_dsi_display_enable); |
Tomi Valkeinen | 3de7a1d | 2009-10-28 11:59:56 +0200 | [diff] [blame] | 4069 | |
Tomi Valkeinen | 2a89dc1 | 2010-07-30 12:39:34 +0300 | [diff] [blame] | 4070 | void omapdss_dsi_display_disable(struct omap_dss_device *dssdev, |
Tomi Valkeinen | 22d6d67 | 2010-10-11 11:33:30 +0300 | [diff] [blame] | 4071 | bool disconnect_lanes, bool enter_ulps) |
Tomi Valkeinen | 3de7a1d | 2009-10-28 11:59:56 +0200 | [diff] [blame] | 4072 | { |
Archit Taneja | a72b64b | 2011-05-12 17:26:26 +0530 | [diff] [blame] | 4073 | struct platform_device *dsidev = dsi_get_dsidev_from_dssdev(dssdev); |
Archit Taneja | f1da39d | 2011-05-12 17:26:27 +0530 | [diff] [blame] | 4074 | struct dsi_data *dsi = dsi_get_dsidrv_data(dsidev); |
Archit Taneja | a72b64b | 2011-05-12 17:26:26 +0530 | [diff] [blame] | 4075 | |
Tomi Valkeinen | 3de7a1d | 2009-10-28 11:59:56 +0200 | [diff] [blame] | 4076 | DSSDBG("dsi_display_disable\n"); |
| 4077 | |
Archit Taneja | a72b64b | 2011-05-12 17:26:26 +0530 | [diff] [blame] | 4078 | WARN_ON(!dsi_bus_is_locked(dsidev)); |
Tomi Valkeinen | 37ac60e | 2010-01-12 15:12:07 +0200 | [diff] [blame] | 4079 | |
Archit Taneja | f1da39d | 2011-05-12 17:26:27 +0530 | [diff] [blame] | 4080 | mutex_lock(&dsi->lock); |
Tomi Valkeinen | 3de7a1d | 2009-10-28 11:59:56 +0200 | [diff] [blame] | 4081 | |
Tomi Valkeinen | 15ffa1d | 2011-06-16 14:34:06 +0300 | [diff] [blame] | 4082 | dsi_sync_vc(dsidev, 0); |
| 4083 | dsi_sync_vc(dsidev, 1); |
| 4084 | dsi_sync_vc(dsidev, 2); |
| 4085 | dsi_sync_vc(dsidev, 3); |
| 4086 | |
Tomi Valkeinen | 3de7a1d | 2009-10-28 11:59:56 +0200 | [diff] [blame] | 4087 | dsi_display_uninit_dispc(dssdev); |
| 4088 | |
Tomi Valkeinen | 22d6d67 | 2010-10-11 11:33:30 +0300 | [diff] [blame] | 4089 | dsi_display_uninit_dsi(dssdev, disconnect_lanes, enter_ulps); |
Tomi Valkeinen | 3de7a1d | 2009-10-28 11:59:56 +0200 | [diff] [blame] | 4090 | |
Tomi Valkeinen | 4fbafaf | 2011-05-27 10:52:19 +0300 | [diff] [blame] | 4091 | dsi_runtime_put(dsidev); |
Archit Taneja | a72b64b | 2011-05-12 17:26:26 +0530 | [diff] [blame] | 4092 | dsi_enable_pll_clock(dsidev, 0); |
Tomi Valkeinen | 3de7a1d | 2009-10-28 11:59:56 +0200 | [diff] [blame] | 4093 | |
| 4094 | omap_dss_stop_device(dssdev); |
Tomi Valkeinen | 37ac60e | 2010-01-12 15:12:07 +0200 | [diff] [blame] | 4095 | |
Archit Taneja | f1da39d | 2011-05-12 17:26:27 +0530 | [diff] [blame] | 4096 | mutex_unlock(&dsi->lock); |
Tomi Valkeinen | 3de7a1d | 2009-10-28 11:59:56 +0200 | [diff] [blame] | 4097 | } |
Tomi Valkeinen | 37ac60e | 2010-01-12 15:12:07 +0200 | [diff] [blame] | 4098 | EXPORT_SYMBOL(omapdss_dsi_display_disable); |
Tomi Valkeinen | 3de7a1d | 2009-10-28 11:59:56 +0200 | [diff] [blame] | 4099 | |
Tomi Valkeinen | 225b650 | 2010-01-11 15:11:01 +0200 | [diff] [blame] | 4100 | int omapdss_dsi_enable_te(struct omap_dss_device *dssdev, bool enable) |
Tomi Valkeinen | 3de7a1d | 2009-10-28 11:59:56 +0200 | [diff] [blame] | 4101 | { |
Archit Taneja | f1da39d | 2011-05-12 17:26:27 +0530 | [diff] [blame] | 4102 | struct platform_device *dsidev = dsi_get_dsidev_from_dssdev(dssdev); |
| 4103 | struct dsi_data *dsi = dsi_get_dsidrv_data(dsidev); |
| 4104 | |
| 4105 | dsi->te_enabled = enable; |
Tomi Valkeinen | 225b650 | 2010-01-11 15:11:01 +0200 | [diff] [blame] | 4106 | return 0; |
Tomi Valkeinen | 3de7a1d | 2009-10-28 11:59:56 +0200 | [diff] [blame] | 4107 | } |
Tomi Valkeinen | 225b650 | 2010-01-11 15:11:01 +0200 | [diff] [blame] | 4108 | EXPORT_SYMBOL(omapdss_dsi_enable_te); |
Tomi Valkeinen | 3de7a1d | 2009-10-28 11:59:56 +0200 | [diff] [blame] | 4109 | |
Tomi Valkeinen | 3de7a1d | 2009-10-28 11:59:56 +0200 | [diff] [blame] | 4110 | void dsi_get_overlay_fifo_thresholds(enum omap_plane plane, |
Tomi Valkeinen | 5ed8cf5 | 2011-06-21 09:35:36 +0300 | [diff] [blame] | 4111 | u32 fifo_size, u32 burst_size, |
Tomi Valkeinen | 3de7a1d | 2009-10-28 11:59:56 +0200 | [diff] [blame] | 4112 | u32 *fifo_low, u32 *fifo_high) |
| 4113 | { |
Tomi Valkeinen | 5ed8cf5 | 2011-06-21 09:35:36 +0300 | [diff] [blame] | 4114 | *fifo_high = fifo_size - burst_size; |
| 4115 | *fifo_low = fifo_size - burst_size * 2; |
Tomi Valkeinen | 3de7a1d | 2009-10-28 11:59:56 +0200 | [diff] [blame] | 4116 | } |
| 4117 | |
| 4118 | int dsi_init_display(struct omap_dss_device *dssdev) |
| 4119 | { |
Archit Taneja | f1da39d | 2011-05-12 17:26:27 +0530 | [diff] [blame] | 4120 | struct platform_device *dsidev = dsi_get_dsidev_from_dssdev(dssdev); |
| 4121 | struct dsi_data *dsi = dsi_get_dsidrv_data(dsidev); |
Archit Taneja | 75d7247 | 2011-05-16 15:17:08 +0530 | [diff] [blame] | 4122 | int dsi_module = dsi_get_dsidev_id(dsidev); |
Archit Taneja | f1da39d | 2011-05-12 17:26:27 +0530 | [diff] [blame] | 4123 | |
Tomi Valkeinen | 3de7a1d | 2009-10-28 11:59:56 +0200 | [diff] [blame] | 4124 | DSSDBG("DSI init\n"); |
| 4125 | |
Archit Taneja | 7e951ee | 2011-07-22 12:45:04 +0530 | [diff] [blame^] | 4126 | if (dssdev->panel.dsi_mode == OMAP_DSS_DSI_CMD_MODE) { |
| 4127 | dssdev->caps = OMAP_DSS_DISPLAY_CAP_MANUAL_UPDATE | |
| 4128 | OMAP_DSS_DISPLAY_CAP_TEAR_ELIM; |
| 4129 | } |
Tomi Valkeinen | 3de7a1d | 2009-10-28 11:59:56 +0200 | [diff] [blame] | 4130 | |
Archit Taneja | f1da39d | 2011-05-12 17:26:27 +0530 | [diff] [blame] | 4131 | if (dsi->vdds_dsi_reg == NULL) { |
Tomi Valkeinen | 5f42f2c | 2011-02-22 15:53:46 +0200 | [diff] [blame] | 4132 | struct regulator *vdds_dsi; |
| 4133 | |
Archit Taneja | f1da39d | 2011-05-12 17:26:27 +0530 | [diff] [blame] | 4134 | vdds_dsi = regulator_get(&dsi->pdev->dev, "vdds_dsi"); |
Tomi Valkeinen | 5f42f2c | 2011-02-22 15:53:46 +0200 | [diff] [blame] | 4135 | |
| 4136 | if (IS_ERR(vdds_dsi)) { |
| 4137 | DSSERR("can't get VDDS_DSI regulator\n"); |
| 4138 | return PTR_ERR(vdds_dsi); |
| 4139 | } |
| 4140 | |
Archit Taneja | f1da39d | 2011-05-12 17:26:27 +0530 | [diff] [blame] | 4141 | dsi->vdds_dsi_reg = vdds_dsi; |
Tomi Valkeinen | 5f42f2c | 2011-02-22 15:53:46 +0200 | [diff] [blame] | 4142 | } |
| 4143 | |
Archit Taneja | 75d7247 | 2011-05-16 15:17:08 +0530 | [diff] [blame] | 4144 | if (dsi_get_num_data_lanes_dssdev(dssdev) > dsi->num_data_lanes) { |
| 4145 | DSSERR("DSI%d can't support more than %d data lanes\n", |
| 4146 | dsi_module + 1, dsi->num_data_lanes); |
| 4147 | return -EINVAL; |
| 4148 | } |
| 4149 | |
Tomi Valkeinen | 3de7a1d | 2009-10-28 11:59:56 +0200 | [diff] [blame] | 4150 | return 0; |
| 4151 | } |
| 4152 | |
Archit Taneja | 5ee3c14 | 2011-03-02 12:35:53 +0530 | [diff] [blame] | 4153 | int omap_dsi_request_vc(struct omap_dss_device *dssdev, int *channel) |
| 4154 | { |
Archit Taneja | f1da39d | 2011-05-12 17:26:27 +0530 | [diff] [blame] | 4155 | struct platform_device *dsidev = dsi_get_dsidev_from_dssdev(dssdev); |
| 4156 | struct dsi_data *dsi = dsi_get_dsidrv_data(dsidev); |
Archit Taneja | 5ee3c14 | 2011-03-02 12:35:53 +0530 | [diff] [blame] | 4157 | int i; |
| 4158 | |
Archit Taneja | f1da39d | 2011-05-12 17:26:27 +0530 | [diff] [blame] | 4159 | for (i = 0; i < ARRAY_SIZE(dsi->vc); i++) { |
| 4160 | if (!dsi->vc[i].dssdev) { |
| 4161 | dsi->vc[i].dssdev = dssdev; |
Archit Taneja | 5ee3c14 | 2011-03-02 12:35:53 +0530 | [diff] [blame] | 4162 | *channel = i; |
| 4163 | return 0; |
| 4164 | } |
| 4165 | } |
| 4166 | |
| 4167 | DSSERR("cannot get VC for display %s", dssdev->name); |
| 4168 | return -ENOSPC; |
| 4169 | } |
| 4170 | EXPORT_SYMBOL(omap_dsi_request_vc); |
| 4171 | |
| 4172 | int omap_dsi_set_vc_id(struct omap_dss_device *dssdev, int channel, int vc_id) |
| 4173 | { |
Archit Taneja | f1da39d | 2011-05-12 17:26:27 +0530 | [diff] [blame] | 4174 | struct platform_device *dsidev = dsi_get_dsidev_from_dssdev(dssdev); |
| 4175 | struct dsi_data *dsi = dsi_get_dsidrv_data(dsidev); |
| 4176 | |
Archit Taneja | 5ee3c14 | 2011-03-02 12:35:53 +0530 | [diff] [blame] | 4177 | if (vc_id < 0 || vc_id > 3) { |
| 4178 | DSSERR("VC ID out of range\n"); |
| 4179 | return -EINVAL; |
| 4180 | } |
| 4181 | |
| 4182 | if (channel < 0 || channel > 3) { |
| 4183 | DSSERR("Virtual Channel out of range\n"); |
| 4184 | return -EINVAL; |
| 4185 | } |
| 4186 | |
Archit Taneja | f1da39d | 2011-05-12 17:26:27 +0530 | [diff] [blame] | 4187 | if (dsi->vc[channel].dssdev != dssdev) { |
Archit Taneja | 5ee3c14 | 2011-03-02 12:35:53 +0530 | [diff] [blame] | 4188 | DSSERR("Virtual Channel not allocated to display %s\n", |
| 4189 | dssdev->name); |
| 4190 | return -EINVAL; |
| 4191 | } |
| 4192 | |
Archit Taneja | f1da39d | 2011-05-12 17:26:27 +0530 | [diff] [blame] | 4193 | dsi->vc[channel].vc_id = vc_id; |
Archit Taneja | 5ee3c14 | 2011-03-02 12:35:53 +0530 | [diff] [blame] | 4194 | |
| 4195 | return 0; |
| 4196 | } |
| 4197 | EXPORT_SYMBOL(omap_dsi_set_vc_id); |
| 4198 | |
| 4199 | void omap_dsi_release_vc(struct omap_dss_device *dssdev, int channel) |
| 4200 | { |
Archit Taneja | f1da39d | 2011-05-12 17:26:27 +0530 | [diff] [blame] | 4201 | struct platform_device *dsidev = dsi_get_dsidev_from_dssdev(dssdev); |
| 4202 | struct dsi_data *dsi = dsi_get_dsidrv_data(dsidev); |
| 4203 | |
Archit Taneja | 5ee3c14 | 2011-03-02 12:35:53 +0530 | [diff] [blame] | 4204 | if ((channel >= 0 && channel <= 3) && |
Archit Taneja | f1da39d | 2011-05-12 17:26:27 +0530 | [diff] [blame] | 4205 | dsi->vc[channel].dssdev == dssdev) { |
| 4206 | dsi->vc[channel].dssdev = NULL; |
| 4207 | dsi->vc[channel].vc_id = 0; |
Archit Taneja | 5ee3c14 | 2011-03-02 12:35:53 +0530 | [diff] [blame] | 4208 | } |
| 4209 | } |
| 4210 | EXPORT_SYMBOL(omap_dsi_release_vc); |
| 4211 | |
Archit Taneja | a72b64b | 2011-05-12 17:26:26 +0530 | [diff] [blame] | 4212 | void dsi_wait_pll_hsdiv_dispc_active(struct platform_device *dsidev) |
Tomi Valkeinen | e406f90 | 2010-06-09 15:28:12 +0300 | [diff] [blame] | 4213 | { |
Archit Taneja | a72b64b | 2011-05-12 17:26:26 +0530 | [diff] [blame] | 4214 | if (wait_for_bit_change(dsidev, DSI_PLL_STATUS, 7, 1) != 1) |
Archit Taneja | 067a57e | 2011-03-02 11:57:25 +0530 | [diff] [blame] | 4215 | DSSERR("%s (%s) not active\n", |
Archit Taneja | 89a35e5 | 2011-04-12 13:52:23 +0530 | [diff] [blame] | 4216 | dss_get_generic_clk_source_name(OMAP_DSS_CLK_SRC_DSI_PLL_HSDIV_DISPC), |
| 4217 | dss_feat_get_clk_source_name(OMAP_DSS_CLK_SRC_DSI_PLL_HSDIV_DISPC)); |
Tomi Valkeinen | e406f90 | 2010-06-09 15:28:12 +0300 | [diff] [blame] | 4218 | } |
| 4219 | |
Archit Taneja | a72b64b | 2011-05-12 17:26:26 +0530 | [diff] [blame] | 4220 | void dsi_wait_pll_hsdiv_dsi_active(struct platform_device *dsidev) |
Tomi Valkeinen | e406f90 | 2010-06-09 15:28:12 +0300 | [diff] [blame] | 4221 | { |
Archit Taneja | a72b64b | 2011-05-12 17:26:26 +0530 | [diff] [blame] | 4222 | if (wait_for_bit_change(dsidev, DSI_PLL_STATUS, 8, 1) != 1) |
Archit Taneja | 067a57e | 2011-03-02 11:57:25 +0530 | [diff] [blame] | 4223 | DSSERR("%s (%s) not active\n", |
Archit Taneja | 89a35e5 | 2011-04-12 13:52:23 +0530 | [diff] [blame] | 4224 | dss_get_generic_clk_source_name(OMAP_DSS_CLK_SRC_DSI_PLL_HSDIV_DSI), |
| 4225 | dss_feat_get_clk_source_name(OMAP_DSS_CLK_SRC_DSI_PLL_HSDIV_DSI)); |
Tomi Valkeinen | e406f90 | 2010-06-09 15:28:12 +0300 | [diff] [blame] | 4226 | } |
| 4227 | |
Archit Taneja | a72b64b | 2011-05-12 17:26:26 +0530 | [diff] [blame] | 4228 | static void dsi_calc_clock_param_ranges(struct platform_device *dsidev) |
Taneja, Archit | 4964111 | 2011-03-14 23:28:23 -0500 | [diff] [blame] | 4229 | { |
Archit Taneja | f1da39d | 2011-05-12 17:26:27 +0530 | [diff] [blame] | 4230 | struct dsi_data *dsi = dsi_get_dsidrv_data(dsidev); |
| 4231 | |
| 4232 | dsi->regn_max = dss_feat_get_param_max(FEAT_PARAM_DSIPLL_REGN); |
| 4233 | dsi->regm_max = dss_feat_get_param_max(FEAT_PARAM_DSIPLL_REGM); |
| 4234 | dsi->regm_dispc_max = |
| 4235 | dss_feat_get_param_max(FEAT_PARAM_DSIPLL_REGM_DISPC); |
| 4236 | dsi->regm_dsi_max = dss_feat_get_param_max(FEAT_PARAM_DSIPLL_REGM_DSI); |
| 4237 | dsi->fint_min = dss_feat_get_param_min(FEAT_PARAM_DSIPLL_FINT); |
| 4238 | dsi->fint_max = dss_feat_get_param_max(FEAT_PARAM_DSIPLL_FINT); |
| 4239 | dsi->lpdiv_max = dss_feat_get_param_max(FEAT_PARAM_DSIPLL_LPDIV); |
Taneja, Archit | 4964111 | 2011-03-14 23:28:23 -0500 | [diff] [blame] | 4240 | } |
| 4241 | |
Tomi Valkeinen | 4fbafaf | 2011-05-27 10:52:19 +0300 | [diff] [blame] | 4242 | static int dsi_get_clocks(struct platform_device *dsidev) |
| 4243 | { |
| 4244 | struct dsi_data *dsi = dsi_get_dsidrv_data(dsidev); |
| 4245 | struct clk *clk; |
| 4246 | |
| 4247 | clk = clk_get(&dsidev->dev, "fck"); |
| 4248 | if (IS_ERR(clk)) { |
| 4249 | DSSERR("can't get fck\n"); |
| 4250 | return PTR_ERR(clk); |
| 4251 | } |
| 4252 | |
| 4253 | dsi->dss_clk = clk; |
| 4254 | |
Tomi Valkeinen | bfe4f8d | 2011-08-04 11:22:54 +0300 | [diff] [blame] | 4255 | clk = clk_get(&dsidev->dev, "sys_clk"); |
Tomi Valkeinen | 4fbafaf | 2011-05-27 10:52:19 +0300 | [diff] [blame] | 4256 | if (IS_ERR(clk)) { |
| 4257 | DSSERR("can't get sys_clk\n"); |
| 4258 | clk_put(dsi->dss_clk); |
| 4259 | dsi->dss_clk = NULL; |
| 4260 | return PTR_ERR(clk); |
| 4261 | } |
| 4262 | |
| 4263 | dsi->sys_clk = clk; |
| 4264 | |
| 4265 | return 0; |
| 4266 | } |
| 4267 | |
| 4268 | static void dsi_put_clocks(struct platform_device *dsidev) |
| 4269 | { |
| 4270 | struct dsi_data *dsi = dsi_get_dsidrv_data(dsidev); |
| 4271 | |
| 4272 | if (dsi->dss_clk) |
| 4273 | clk_put(dsi->dss_clk); |
| 4274 | if (dsi->sys_clk) |
| 4275 | clk_put(dsi->sys_clk); |
| 4276 | } |
| 4277 | |
Tomi Valkeinen | b98482e | 2011-05-16 13:52:51 +0300 | [diff] [blame] | 4278 | /* DSI1 HW IP initialisation */ |
Tomi Valkeinen | 7c68dd9 | 2011-08-03 14:00:57 +0300 | [diff] [blame] | 4279 | static int omap_dsihw_probe(struct platform_device *dsidev) |
Tomi Valkeinen | 3de7a1d | 2009-10-28 11:59:56 +0200 | [diff] [blame] | 4280 | { |
Tomi Valkeinen | d1f5857 | 2010-07-30 11:57:57 +0300 | [diff] [blame] | 4281 | struct omap_display_platform_data *dss_plat_data; |
| 4282 | struct omap_dss_board_info *board_info; |
Tomi Valkeinen | 3de7a1d | 2009-10-28 11:59:56 +0200 | [diff] [blame] | 4283 | u32 rev; |
Archit Taneja | f1da39d | 2011-05-12 17:26:27 +0530 | [diff] [blame] | 4284 | int r, i, dsi_module = dsi_get_dsidev_id(dsidev); |
Senthilvadivu Guruswamy | ea9da36 | 2011-01-24 06:22:04 +0000 | [diff] [blame] | 4285 | struct resource *dsi_mem; |
Archit Taneja | f1da39d | 2011-05-12 17:26:27 +0530 | [diff] [blame] | 4286 | struct dsi_data *dsi; |
Tomi Valkeinen | 3de7a1d | 2009-10-28 11:59:56 +0200 | [diff] [blame] | 4287 | |
Archit Taneja | f1da39d | 2011-05-12 17:26:27 +0530 | [diff] [blame] | 4288 | dsi = kzalloc(sizeof(*dsi), GFP_KERNEL); |
| 4289 | if (!dsi) { |
| 4290 | r = -ENOMEM; |
Tomi Valkeinen | 4fbafaf | 2011-05-27 10:52:19 +0300 | [diff] [blame] | 4291 | goto err_alloc; |
Archit Taneja | f1da39d | 2011-05-12 17:26:27 +0530 | [diff] [blame] | 4292 | } |
| 4293 | |
| 4294 | dsi->pdev = dsidev; |
| 4295 | dsi_pdev_map[dsi_module] = dsidev; |
| 4296 | dev_set_drvdata(&dsidev->dev, dsi); |
Archit Taneja | a72b64b | 2011-05-12 17:26:26 +0530 | [diff] [blame] | 4297 | |
| 4298 | dss_plat_data = dsidev->dev.platform_data; |
Tomi Valkeinen | d1f5857 | 2010-07-30 11:57:57 +0300 | [diff] [blame] | 4299 | board_info = dss_plat_data->board_data; |
Tomi Valkeinen | 5bc416c | 2011-06-15 15:21:12 +0300 | [diff] [blame] | 4300 | dsi->enable_pads = board_info->dsi_enable_pads; |
| 4301 | dsi->disable_pads = board_info->dsi_disable_pads; |
Tomi Valkeinen | d1f5857 | 2010-07-30 11:57:57 +0300 | [diff] [blame] | 4302 | |
Archit Taneja | f1da39d | 2011-05-12 17:26:27 +0530 | [diff] [blame] | 4303 | spin_lock_init(&dsi->irq_lock); |
| 4304 | spin_lock_init(&dsi->errors_lock); |
| 4305 | dsi->errors = 0; |
Tomi Valkeinen | 3de7a1d | 2009-10-28 11:59:56 +0200 | [diff] [blame] | 4306 | |
Tomi Valkeinen | dfc0fd8 | 2009-12-17 14:35:21 +0200 | [diff] [blame] | 4307 | #ifdef CONFIG_OMAP2_DSS_COLLECT_IRQ_STATS |
Archit Taneja | f1da39d | 2011-05-12 17:26:27 +0530 | [diff] [blame] | 4308 | spin_lock_init(&dsi->irq_stats_lock); |
| 4309 | dsi->irq_stats.last_reset = jiffies; |
Tomi Valkeinen | dfc0fd8 | 2009-12-17 14:35:21 +0200 | [diff] [blame] | 4310 | #endif |
| 4311 | |
Archit Taneja | f1da39d | 2011-05-12 17:26:27 +0530 | [diff] [blame] | 4312 | mutex_init(&dsi->lock); |
| 4313 | sema_init(&dsi->bus_lock, 1); |
Tomi Valkeinen | 3de7a1d | 2009-10-28 11:59:56 +0200 | [diff] [blame] | 4314 | |
Tomi Valkeinen | 4fbafaf | 2011-05-27 10:52:19 +0300 | [diff] [blame] | 4315 | r = dsi_get_clocks(dsidev); |
| 4316 | if (r) |
| 4317 | goto err_get_clk; |
| 4318 | |
| 4319 | pm_runtime_enable(&dsidev->dev); |
| 4320 | |
Archit Taneja | f1da39d | 2011-05-12 17:26:27 +0530 | [diff] [blame] | 4321 | INIT_DELAYED_WORK_DEFERRABLE(&dsi->framedone_timeout_work, |
| 4322 | dsi_framedone_timeout_work_callback); |
| 4323 | |
| 4324 | #ifdef DSI_CATCH_MISSING_TE |
| 4325 | init_timer(&dsi->te_timer); |
| 4326 | dsi->te_timer.function = dsi_te_timeout; |
| 4327 | dsi->te_timer.data = 0; |
| 4328 | #endif |
| 4329 | dsi_mem = platform_get_resource(dsi->pdev, IORESOURCE_MEM, 0); |
| 4330 | if (!dsi_mem) { |
| 4331 | DSSERR("can't get IORESOURCE_MEM DSI\n"); |
| 4332 | r = -EINVAL; |
Tomi Valkeinen | 4fbafaf | 2011-05-27 10:52:19 +0300 | [diff] [blame] | 4333 | goto err_ioremap; |
archit taneja | affe360 | 2011-02-23 08:41:03 +0000 | [diff] [blame] | 4334 | } |
Archit Taneja | f1da39d | 2011-05-12 17:26:27 +0530 | [diff] [blame] | 4335 | dsi->base = ioremap(dsi_mem->start, resource_size(dsi_mem)); |
| 4336 | if (!dsi->base) { |
| 4337 | DSSERR("can't ioremap DSI\n"); |
| 4338 | r = -ENOMEM; |
Tomi Valkeinen | 4fbafaf | 2011-05-27 10:52:19 +0300 | [diff] [blame] | 4339 | goto err_ioremap; |
Archit Taneja | f1da39d | 2011-05-12 17:26:27 +0530 | [diff] [blame] | 4340 | } |
| 4341 | dsi->irq = platform_get_irq(dsi->pdev, 0); |
| 4342 | if (dsi->irq < 0) { |
| 4343 | DSSERR("platform_get_irq failed\n"); |
| 4344 | r = -ENODEV; |
Tomi Valkeinen | 4fbafaf | 2011-05-27 10:52:19 +0300 | [diff] [blame] | 4345 | goto err_get_irq; |
Archit Taneja | f1da39d | 2011-05-12 17:26:27 +0530 | [diff] [blame] | 4346 | } |
archit taneja | affe360 | 2011-02-23 08:41:03 +0000 | [diff] [blame] | 4347 | |
Archit Taneja | f1da39d | 2011-05-12 17:26:27 +0530 | [diff] [blame] | 4348 | r = request_irq(dsi->irq, omap_dsi_irq_handler, IRQF_SHARED, |
| 4349 | dev_name(&dsidev->dev), dsi->pdev); |
archit taneja | affe360 | 2011-02-23 08:41:03 +0000 | [diff] [blame] | 4350 | if (r < 0) { |
| 4351 | DSSERR("request_irq failed\n"); |
Tomi Valkeinen | 4fbafaf | 2011-05-27 10:52:19 +0300 | [diff] [blame] | 4352 | goto err_get_irq; |
archit taneja | affe360 | 2011-02-23 08:41:03 +0000 | [diff] [blame] | 4353 | } |
Tomi Valkeinen | 3de7a1d | 2009-10-28 11:59:56 +0200 | [diff] [blame] | 4354 | |
Archit Taneja | 5ee3c14 | 2011-03-02 12:35:53 +0530 | [diff] [blame] | 4355 | /* DSI VCs initialization */ |
Archit Taneja | f1da39d | 2011-05-12 17:26:27 +0530 | [diff] [blame] | 4356 | for (i = 0; i < ARRAY_SIZE(dsi->vc); i++) { |
Archit Taneja | d604914 | 2011-08-22 11:58:08 +0530 | [diff] [blame] | 4357 | dsi->vc[i].source = DSI_VC_SOURCE_L4; |
Archit Taneja | f1da39d | 2011-05-12 17:26:27 +0530 | [diff] [blame] | 4358 | dsi->vc[i].dssdev = NULL; |
| 4359 | dsi->vc[i].vc_id = 0; |
Archit Taneja | 5ee3c14 | 2011-03-02 12:35:53 +0530 | [diff] [blame] | 4360 | } |
| 4361 | |
Archit Taneja | a72b64b | 2011-05-12 17:26:26 +0530 | [diff] [blame] | 4362 | dsi_calc_clock_param_ranges(dsidev); |
Taneja, Archit | 4964111 | 2011-03-14 23:28:23 -0500 | [diff] [blame] | 4363 | |
Tomi Valkeinen | 4fbafaf | 2011-05-27 10:52:19 +0300 | [diff] [blame] | 4364 | r = dsi_runtime_get(dsidev); |
| 4365 | if (r) |
| 4366 | goto err_get_dsi; |
Tomi Valkeinen | 3de7a1d | 2009-10-28 11:59:56 +0200 | [diff] [blame] | 4367 | |
Archit Taneja | a72b64b | 2011-05-12 17:26:26 +0530 | [diff] [blame] | 4368 | rev = dsi_read_reg(dsidev, DSI_REVISION); |
| 4369 | dev_dbg(&dsidev->dev, "OMAP DSI rev %d.%d\n", |
Tomi Valkeinen | 3de7a1d | 2009-10-28 11:59:56 +0200 | [diff] [blame] | 4370 | FLD_GET(rev, 7, 4), FLD_GET(rev, 3, 0)); |
| 4371 | |
Archit Taneja | 75d7247 | 2011-05-16 15:17:08 +0530 | [diff] [blame] | 4372 | dsi->num_data_lanes = dsi_get_num_data_lanes(dsidev); |
| 4373 | |
Tomi Valkeinen | 4fbafaf | 2011-05-27 10:52:19 +0300 | [diff] [blame] | 4374 | dsi_runtime_put(dsidev); |
Tomi Valkeinen | 3de7a1d | 2009-10-28 11:59:56 +0200 | [diff] [blame] | 4375 | |
Tomi Valkeinen | 3de7a1d | 2009-10-28 11:59:56 +0200 | [diff] [blame] | 4376 | return 0; |
Tomi Valkeinen | 4fbafaf | 2011-05-27 10:52:19 +0300 | [diff] [blame] | 4377 | |
| 4378 | err_get_dsi: |
| 4379 | free_irq(dsi->irq, dsi->pdev); |
| 4380 | err_get_irq: |
Archit Taneja | 49dbf58 | 2011-05-16 15:17:07 +0530 | [diff] [blame] | 4381 | iounmap(dsi->base); |
Tomi Valkeinen | 4fbafaf | 2011-05-27 10:52:19 +0300 | [diff] [blame] | 4382 | err_ioremap: |
| 4383 | pm_runtime_disable(&dsidev->dev); |
| 4384 | err_get_clk: |
Archit Taneja | f1da39d | 2011-05-12 17:26:27 +0530 | [diff] [blame] | 4385 | kfree(dsi); |
Tomi Valkeinen | 4fbafaf | 2011-05-27 10:52:19 +0300 | [diff] [blame] | 4386 | err_alloc: |
Tomi Valkeinen | 3de7a1d | 2009-10-28 11:59:56 +0200 | [diff] [blame] | 4387 | return r; |
| 4388 | } |
| 4389 | |
Tomi Valkeinen | 7c68dd9 | 2011-08-03 14:00:57 +0300 | [diff] [blame] | 4390 | static int omap_dsihw_remove(struct platform_device *dsidev) |
Tomi Valkeinen | 3de7a1d | 2009-10-28 11:59:56 +0200 | [diff] [blame] | 4391 | { |
Archit Taneja | f1da39d | 2011-05-12 17:26:27 +0530 | [diff] [blame] | 4392 | struct dsi_data *dsi = dsi_get_dsidrv_data(dsidev); |
| 4393 | |
Tomi Valkeinen | b98482e | 2011-05-16 13:52:51 +0300 | [diff] [blame] | 4394 | WARN_ON(dsi->scp_clk_refcount > 0); |
| 4395 | |
Tomi Valkeinen | 4fbafaf | 2011-05-27 10:52:19 +0300 | [diff] [blame] | 4396 | pm_runtime_disable(&dsidev->dev); |
| 4397 | |
| 4398 | dsi_put_clocks(dsidev); |
| 4399 | |
Archit Taneja | f1da39d | 2011-05-12 17:26:27 +0530 | [diff] [blame] | 4400 | if (dsi->vdds_dsi_reg != NULL) { |
| 4401 | if (dsi->vdds_dsi_enabled) { |
| 4402 | regulator_disable(dsi->vdds_dsi_reg); |
| 4403 | dsi->vdds_dsi_enabled = false; |
Tomi Valkeinen | 88257b2 | 2010-12-20 16:26:22 +0200 | [diff] [blame] | 4404 | } |
| 4405 | |
Archit Taneja | f1da39d | 2011-05-12 17:26:27 +0530 | [diff] [blame] | 4406 | regulator_put(dsi->vdds_dsi_reg); |
| 4407 | dsi->vdds_dsi_reg = NULL; |
Senthilvadivu Guruswamy | c8aac01 | 2011-01-24 06:22:02 +0000 | [diff] [blame] | 4408 | } |
| 4409 | |
Archit Taneja | f1da39d | 2011-05-12 17:26:27 +0530 | [diff] [blame] | 4410 | free_irq(dsi->irq, dsi->pdev); |
| 4411 | iounmap(dsi->base); |
Tomi Valkeinen | 3de7a1d | 2009-10-28 11:59:56 +0200 | [diff] [blame] | 4412 | |
Archit Taneja | f1da39d | 2011-05-12 17:26:27 +0530 | [diff] [blame] | 4413 | kfree(dsi); |
Tomi Valkeinen | 0f16aa0 | 2010-04-12 09:57:19 +0300 | [diff] [blame] | 4414 | |
Senthilvadivu Guruswamy | c8aac01 | 2011-01-24 06:22:02 +0000 | [diff] [blame] | 4415 | return 0; |
| 4416 | } |
| 4417 | |
Tomi Valkeinen | 4fbafaf | 2011-05-27 10:52:19 +0300 | [diff] [blame] | 4418 | static int dsi_runtime_suspend(struct device *dev) |
| 4419 | { |
Tomi Valkeinen | 4fbafaf | 2011-05-27 10:52:19 +0300 | [diff] [blame] | 4420 | dispc_runtime_put(); |
| 4421 | dss_runtime_put(); |
| 4422 | |
| 4423 | return 0; |
| 4424 | } |
| 4425 | |
| 4426 | static int dsi_runtime_resume(struct device *dev) |
| 4427 | { |
Tomi Valkeinen | 4fbafaf | 2011-05-27 10:52:19 +0300 | [diff] [blame] | 4428 | int r; |
| 4429 | |
| 4430 | r = dss_runtime_get(); |
| 4431 | if (r) |
| 4432 | goto err_get_dss; |
| 4433 | |
| 4434 | r = dispc_runtime_get(); |
| 4435 | if (r) |
| 4436 | goto err_get_dispc; |
| 4437 | |
Tomi Valkeinen | 4fbafaf | 2011-05-27 10:52:19 +0300 | [diff] [blame] | 4438 | return 0; |
| 4439 | |
| 4440 | err_get_dispc: |
| 4441 | dss_runtime_put(); |
| 4442 | err_get_dss: |
| 4443 | return r; |
| 4444 | } |
| 4445 | |
| 4446 | static const struct dev_pm_ops dsi_pm_ops = { |
| 4447 | .runtime_suspend = dsi_runtime_suspend, |
| 4448 | .runtime_resume = dsi_runtime_resume, |
| 4449 | }; |
| 4450 | |
Tomi Valkeinen | 7c68dd9 | 2011-08-03 14:00:57 +0300 | [diff] [blame] | 4451 | static struct platform_driver omap_dsihw_driver = { |
| 4452 | .probe = omap_dsihw_probe, |
| 4453 | .remove = omap_dsihw_remove, |
Senthilvadivu Guruswamy | c8aac01 | 2011-01-24 06:22:02 +0000 | [diff] [blame] | 4454 | .driver = { |
Tomi Valkeinen | 7c68dd9 | 2011-08-03 14:00:57 +0300 | [diff] [blame] | 4455 | .name = "omapdss_dsi", |
Senthilvadivu Guruswamy | c8aac01 | 2011-01-24 06:22:02 +0000 | [diff] [blame] | 4456 | .owner = THIS_MODULE, |
Tomi Valkeinen | 4fbafaf | 2011-05-27 10:52:19 +0300 | [diff] [blame] | 4457 | .pm = &dsi_pm_ops, |
Senthilvadivu Guruswamy | c8aac01 | 2011-01-24 06:22:02 +0000 | [diff] [blame] | 4458 | }, |
| 4459 | }; |
| 4460 | |
| 4461 | int dsi_init_platform_driver(void) |
| 4462 | { |
Tomi Valkeinen | 7c68dd9 | 2011-08-03 14:00:57 +0300 | [diff] [blame] | 4463 | return platform_driver_register(&omap_dsihw_driver); |
Senthilvadivu Guruswamy | c8aac01 | 2011-01-24 06:22:02 +0000 | [diff] [blame] | 4464 | } |
| 4465 | |
| 4466 | void dsi_uninit_platform_driver(void) |
| 4467 | { |
Tomi Valkeinen | 7c68dd9 | 2011-08-03 14:00:57 +0300 | [diff] [blame] | 4468 | return platform_driver_unregister(&omap_dsihw_driver); |
Senthilvadivu Guruswamy | c8aac01 | 2011-01-24 06:22:02 +0000 | [diff] [blame] | 4469 | } |