Guennadi Liakhovetski | 86528da | 2009-01-21 10:32:34 -0700 | [diff] [blame] | 1 | /* |
| 2 | * Copyright (C) 2008 |
| 3 | * Guennadi Liakhovetski, DENX Software Engineering, <lg@denx.de> |
| 4 | * |
| 5 | * Copyright 2004-2007 Freescale Semiconductor, Inc. All Rights Reserved. |
| 6 | * |
| 7 | * This program is free software; you can redistribute it and/or modify |
| 8 | * it under the terms of the GNU General Public License version 2 as |
| 9 | * published by the Free Software Foundation. |
| 10 | */ |
| 11 | |
| 12 | #include <linux/module.h> |
| 13 | #include <linux/kernel.h> |
| 14 | #include <linux/platform_device.h> |
| 15 | #include <linux/sched.h> |
| 16 | #include <linux/errno.h> |
| 17 | #include <linux/string.h> |
| 18 | #include <linux/interrupt.h> |
| 19 | #include <linux/slab.h> |
| 20 | #include <linux/fb.h> |
| 21 | #include <linux/delay.h> |
| 22 | #include <linux/init.h> |
| 23 | #include <linux/ioport.h> |
| 24 | #include <linux/dma-mapping.h> |
| 25 | #include <linux/dmaengine.h> |
| 26 | #include <linux/console.h> |
| 27 | #include <linux/clk.h> |
| 28 | #include <linux/mutex.h> |
Shawn Guo | b8a6d99 | 2012-09-14 10:35:54 +0800 | [diff] [blame] | 29 | #include <linux/dma/ipu-dma.h> |
Guennadi Liakhovetski | 86528da | 2009-01-21 10:32:34 -0700 | [diff] [blame] | 30 | |
Arnd Bergmann | 82906b1 | 2012-08-24 15:14:29 +0200 | [diff] [blame] | 31 | #include <linux/platform_data/dma-imx.h> |
Arnd Bergmann | 82906b1 | 2012-08-24 15:14:29 +0200 | [diff] [blame] | 32 | #include <linux/platform_data/video-mx3fb.h> |
Guennadi Liakhovetski | 86528da | 2009-01-21 10:32:34 -0700 | [diff] [blame] | 33 | |
| 34 | #include <asm/io.h> |
| 35 | #include <asm/uaccess.h> |
| 36 | |
Guennadi Liakhovetski | 6e1588cb | 2009-02-26 21:34:28 +0100 | [diff] [blame] | 37 | #define MX3FB_NAME "mx3_sdc_fb" |
Guennadi Liakhovetski | 86528da | 2009-01-21 10:32:34 -0700 | [diff] [blame] | 38 | |
Guennadi Liakhovetski | 6e1588cb | 2009-02-26 21:34:28 +0100 | [diff] [blame] | 39 | #define MX3FB_REG_OFFSET 0xB4 |
Guennadi Liakhovetski | 86528da | 2009-01-21 10:32:34 -0700 | [diff] [blame] | 40 | |
| 41 | /* SDC Registers */ |
Guennadi Liakhovetski | 6e1588cb | 2009-02-26 21:34:28 +0100 | [diff] [blame] | 42 | #define SDC_COM_CONF (0xB4 - MX3FB_REG_OFFSET) |
| 43 | #define SDC_GW_CTRL (0xB8 - MX3FB_REG_OFFSET) |
| 44 | #define SDC_FG_POS (0xBC - MX3FB_REG_OFFSET) |
| 45 | #define SDC_BG_POS (0xC0 - MX3FB_REG_OFFSET) |
| 46 | #define SDC_CUR_POS (0xC4 - MX3FB_REG_OFFSET) |
| 47 | #define SDC_PWM_CTRL (0xC8 - MX3FB_REG_OFFSET) |
| 48 | #define SDC_CUR_MAP (0xCC - MX3FB_REG_OFFSET) |
| 49 | #define SDC_HOR_CONF (0xD0 - MX3FB_REG_OFFSET) |
| 50 | #define SDC_VER_CONF (0xD4 - MX3FB_REG_OFFSET) |
| 51 | #define SDC_SHARP_CONF_1 (0xD8 - MX3FB_REG_OFFSET) |
| 52 | #define SDC_SHARP_CONF_2 (0xDC - MX3FB_REG_OFFSET) |
Guennadi Liakhovetski | 86528da | 2009-01-21 10:32:34 -0700 | [diff] [blame] | 53 | |
| 54 | /* Register bits */ |
Guennadi Liakhovetski | 6e1588cb | 2009-02-26 21:34:28 +0100 | [diff] [blame] | 55 | #define SDC_COM_TFT_COLOR 0x00000001UL |
| 56 | #define SDC_COM_FG_EN 0x00000010UL |
| 57 | #define SDC_COM_GWSEL 0x00000020UL |
| 58 | #define SDC_COM_GLB_A 0x00000040UL |
| 59 | #define SDC_COM_KEY_COLOR_G 0x00000080UL |
| 60 | #define SDC_COM_BG_EN 0x00000200UL |
| 61 | #define SDC_COM_SHARP 0x00001000UL |
Guennadi Liakhovetski | 86528da | 2009-01-21 10:32:34 -0700 | [diff] [blame] | 62 | |
Guennadi Liakhovetski | 6e1588cb | 2009-02-26 21:34:28 +0100 | [diff] [blame] | 63 | #define SDC_V_SYNC_WIDTH_L 0x00000001UL |
Guennadi Liakhovetski | 86528da | 2009-01-21 10:32:34 -0700 | [diff] [blame] | 64 | |
| 65 | /* Display Interface registers */ |
Guennadi Liakhovetski | 6e1588cb | 2009-02-26 21:34:28 +0100 | [diff] [blame] | 66 | #define DI_DISP_IF_CONF (0x0124 - MX3FB_REG_OFFSET) |
| 67 | #define DI_DISP_SIG_POL (0x0128 - MX3FB_REG_OFFSET) |
| 68 | #define DI_SER_DISP1_CONF (0x012C - MX3FB_REG_OFFSET) |
| 69 | #define DI_SER_DISP2_CONF (0x0130 - MX3FB_REG_OFFSET) |
| 70 | #define DI_HSP_CLK_PER (0x0134 - MX3FB_REG_OFFSET) |
| 71 | #define DI_DISP0_TIME_CONF_1 (0x0138 - MX3FB_REG_OFFSET) |
| 72 | #define DI_DISP0_TIME_CONF_2 (0x013C - MX3FB_REG_OFFSET) |
| 73 | #define DI_DISP0_TIME_CONF_3 (0x0140 - MX3FB_REG_OFFSET) |
| 74 | #define DI_DISP1_TIME_CONF_1 (0x0144 - MX3FB_REG_OFFSET) |
| 75 | #define DI_DISP1_TIME_CONF_2 (0x0148 - MX3FB_REG_OFFSET) |
| 76 | #define DI_DISP1_TIME_CONF_3 (0x014C - MX3FB_REG_OFFSET) |
| 77 | #define DI_DISP2_TIME_CONF_1 (0x0150 - MX3FB_REG_OFFSET) |
| 78 | #define DI_DISP2_TIME_CONF_2 (0x0154 - MX3FB_REG_OFFSET) |
| 79 | #define DI_DISP2_TIME_CONF_3 (0x0158 - MX3FB_REG_OFFSET) |
| 80 | #define DI_DISP3_TIME_CONF (0x015C - MX3FB_REG_OFFSET) |
| 81 | #define DI_DISP0_DB0_MAP (0x0160 - MX3FB_REG_OFFSET) |
| 82 | #define DI_DISP0_DB1_MAP (0x0164 - MX3FB_REG_OFFSET) |
| 83 | #define DI_DISP0_DB2_MAP (0x0168 - MX3FB_REG_OFFSET) |
| 84 | #define DI_DISP0_CB0_MAP (0x016C - MX3FB_REG_OFFSET) |
| 85 | #define DI_DISP0_CB1_MAP (0x0170 - MX3FB_REG_OFFSET) |
| 86 | #define DI_DISP0_CB2_MAP (0x0174 - MX3FB_REG_OFFSET) |
| 87 | #define DI_DISP1_DB0_MAP (0x0178 - MX3FB_REG_OFFSET) |
| 88 | #define DI_DISP1_DB1_MAP (0x017C - MX3FB_REG_OFFSET) |
| 89 | #define DI_DISP1_DB2_MAP (0x0180 - MX3FB_REG_OFFSET) |
| 90 | #define DI_DISP1_CB0_MAP (0x0184 - MX3FB_REG_OFFSET) |
| 91 | #define DI_DISP1_CB1_MAP (0x0188 - MX3FB_REG_OFFSET) |
| 92 | #define DI_DISP1_CB2_MAP (0x018C - MX3FB_REG_OFFSET) |
| 93 | #define DI_DISP2_DB0_MAP (0x0190 - MX3FB_REG_OFFSET) |
| 94 | #define DI_DISP2_DB1_MAP (0x0194 - MX3FB_REG_OFFSET) |
| 95 | #define DI_DISP2_DB2_MAP (0x0198 - MX3FB_REG_OFFSET) |
| 96 | #define DI_DISP2_CB0_MAP (0x019C - MX3FB_REG_OFFSET) |
| 97 | #define DI_DISP2_CB1_MAP (0x01A0 - MX3FB_REG_OFFSET) |
| 98 | #define DI_DISP2_CB2_MAP (0x01A4 - MX3FB_REG_OFFSET) |
| 99 | #define DI_DISP3_B0_MAP (0x01A8 - MX3FB_REG_OFFSET) |
| 100 | #define DI_DISP3_B1_MAP (0x01AC - MX3FB_REG_OFFSET) |
| 101 | #define DI_DISP3_B2_MAP (0x01B0 - MX3FB_REG_OFFSET) |
| 102 | #define DI_DISP_ACC_CC (0x01B4 - MX3FB_REG_OFFSET) |
| 103 | #define DI_DISP_LLA_CONF (0x01B8 - MX3FB_REG_OFFSET) |
| 104 | #define DI_DISP_LLA_DATA (0x01BC - MX3FB_REG_OFFSET) |
Guennadi Liakhovetski | 86528da | 2009-01-21 10:32:34 -0700 | [diff] [blame] | 105 | |
| 106 | /* DI_DISP_SIG_POL bits */ |
Guennadi Liakhovetski | 6e1588cb | 2009-02-26 21:34:28 +0100 | [diff] [blame] | 107 | #define DI_D3_VSYNC_POL_SHIFT 28 |
| 108 | #define DI_D3_HSYNC_POL_SHIFT 27 |
| 109 | #define DI_D3_DRDY_SHARP_POL_SHIFT 26 |
| 110 | #define DI_D3_CLK_POL_SHIFT 25 |
| 111 | #define DI_D3_DATA_POL_SHIFT 24 |
Guennadi Liakhovetski | 86528da | 2009-01-21 10:32:34 -0700 | [diff] [blame] | 112 | |
| 113 | /* DI_DISP_IF_CONF bits */ |
Guennadi Liakhovetski | 6e1588cb | 2009-02-26 21:34:28 +0100 | [diff] [blame] | 114 | #define DI_D3_CLK_IDLE_SHIFT 26 |
| 115 | #define DI_D3_CLK_SEL_SHIFT 25 |
| 116 | #define DI_D3_DATAMSK_SHIFT 24 |
Guennadi Liakhovetski | 86528da | 2009-01-21 10:32:34 -0700 | [diff] [blame] | 117 | |
| 118 | enum ipu_panel { |
Guennadi Liakhovetski | 6e1588cb | 2009-02-26 21:34:28 +0100 | [diff] [blame] | 119 | IPU_PANEL_SHARP_TFT, |
| 120 | IPU_PANEL_TFT, |
Guennadi Liakhovetski | 86528da | 2009-01-21 10:32:34 -0700 | [diff] [blame] | 121 | }; |
| 122 | |
| 123 | struct ipu_di_signal_cfg { |
Guennadi Liakhovetski | 6e1588cb | 2009-02-26 21:34:28 +0100 | [diff] [blame] | 124 | unsigned datamask_en:1; |
| 125 | unsigned clksel_en:1; |
| 126 | unsigned clkidle_en:1; |
| 127 | unsigned data_pol:1; /* true = inverted */ |
| 128 | unsigned clk_pol:1; /* true = rising edge */ |
| 129 | unsigned enable_pol:1; |
| 130 | unsigned Hsync_pol:1; /* true = active high */ |
| 131 | unsigned Vsync_pol:1; |
Guennadi Liakhovetski | 86528da | 2009-01-21 10:32:34 -0700 | [diff] [blame] | 132 | }; |
| 133 | |
| 134 | static const struct fb_videomode mx3fb_modedb[] = { |
Guennadi Liakhovetski | 6e1588cb | 2009-02-26 21:34:28 +0100 | [diff] [blame] | 135 | { |
| 136 | /* 240x320 @ 60 Hz */ |
| 137 | .name = "Sharp-QVGA", |
| 138 | .refresh = 60, |
| 139 | .xres = 240, |
| 140 | .yres = 320, |
| 141 | .pixclock = 185925, |
| 142 | .left_margin = 9, |
| 143 | .right_margin = 16, |
| 144 | .upper_margin = 7, |
| 145 | .lower_margin = 9, |
| 146 | .hsync_len = 1, |
| 147 | .vsync_len = 1, |
| 148 | .sync = FB_SYNC_HOR_HIGH_ACT | FB_SYNC_SHARP_MODE | |
| 149 | FB_SYNC_CLK_INVERT | FB_SYNC_DATA_INVERT | |
| 150 | FB_SYNC_CLK_IDLE_EN, |
| 151 | .vmode = FB_VMODE_NONINTERLACED, |
| 152 | .flag = 0, |
| 153 | }, { |
| 154 | /* 240x33 @ 60 Hz */ |
| 155 | .name = "Sharp-CLI", |
| 156 | .refresh = 60, |
| 157 | .xres = 240, |
| 158 | .yres = 33, |
| 159 | .pixclock = 185925, |
| 160 | .left_margin = 9, |
| 161 | .right_margin = 16, |
| 162 | .upper_margin = 7, |
| 163 | .lower_margin = 9 + 287, |
| 164 | .hsync_len = 1, |
| 165 | .vsync_len = 1, |
| 166 | .sync = FB_SYNC_HOR_HIGH_ACT | FB_SYNC_SHARP_MODE | |
| 167 | FB_SYNC_CLK_INVERT | FB_SYNC_DATA_INVERT | |
| 168 | FB_SYNC_CLK_IDLE_EN, |
| 169 | .vmode = FB_VMODE_NONINTERLACED, |
| 170 | .flag = 0, |
| 171 | }, { |
| 172 | /* 640x480 @ 60 Hz */ |
| 173 | .name = "NEC-VGA", |
| 174 | .refresh = 60, |
| 175 | .xres = 640, |
| 176 | .yres = 480, |
| 177 | .pixclock = 38255, |
| 178 | .left_margin = 144, |
| 179 | .right_margin = 0, |
| 180 | .upper_margin = 34, |
| 181 | .lower_margin = 40, |
| 182 | .hsync_len = 1, |
| 183 | .vsync_len = 1, |
| 184 | .sync = FB_SYNC_VERT_HIGH_ACT | FB_SYNC_OE_ACT_HIGH, |
| 185 | .vmode = FB_VMODE_NONINTERLACED, |
| 186 | .flag = 0, |
| 187 | }, { |
| 188 | /* NTSC TV output */ |
| 189 | .name = "TV-NTSC", |
| 190 | .refresh = 60, |
| 191 | .xres = 640, |
| 192 | .yres = 480, |
| 193 | .pixclock = 37538, |
| 194 | .left_margin = 38, |
| 195 | .right_margin = 858 - 640 - 38 - 3, |
| 196 | .upper_margin = 36, |
| 197 | .lower_margin = 518 - 480 - 36 - 1, |
| 198 | .hsync_len = 3, |
| 199 | .vsync_len = 1, |
| 200 | .sync = 0, |
| 201 | .vmode = FB_VMODE_NONINTERLACED, |
| 202 | .flag = 0, |
| 203 | }, { |
| 204 | /* PAL TV output */ |
| 205 | .name = "TV-PAL", |
| 206 | .refresh = 50, |
| 207 | .xres = 640, |
| 208 | .yres = 480, |
| 209 | .pixclock = 37538, |
| 210 | .left_margin = 38, |
| 211 | .right_margin = 960 - 640 - 38 - 32, |
| 212 | .upper_margin = 32, |
| 213 | .lower_margin = 555 - 480 - 32 - 3, |
| 214 | .hsync_len = 32, |
| 215 | .vsync_len = 3, |
| 216 | .sync = 0, |
| 217 | .vmode = FB_VMODE_NONINTERLACED, |
| 218 | .flag = 0, |
| 219 | }, { |
| 220 | /* TV output VGA mode, 640x480 @ 65 Hz */ |
| 221 | .name = "TV-VGA", |
| 222 | .refresh = 60, |
| 223 | .xres = 640, |
| 224 | .yres = 480, |
| 225 | .pixclock = 40574, |
| 226 | .left_margin = 35, |
| 227 | .right_margin = 45, |
| 228 | .upper_margin = 9, |
| 229 | .lower_margin = 1, |
| 230 | .hsync_len = 46, |
| 231 | .vsync_len = 5, |
| 232 | .sync = 0, |
| 233 | .vmode = FB_VMODE_NONINTERLACED, |
| 234 | .flag = 0, |
| 235 | }, |
Guennadi Liakhovetski | 86528da | 2009-01-21 10:32:34 -0700 | [diff] [blame] | 236 | }; |
| 237 | |
| 238 | struct mx3fb_data { |
Guennadi Liakhovetski | 6e1588cb | 2009-02-26 21:34:28 +0100 | [diff] [blame] | 239 | struct fb_info *fbi; |
| 240 | int backlight_level; |
| 241 | void __iomem *reg_base; |
| 242 | spinlock_t lock; |
| 243 | struct device *dev; |
Guennadi Liakhovetski | 86528da | 2009-01-21 10:32:34 -0700 | [diff] [blame] | 244 | |
Guennadi Liakhovetski | 6e1588cb | 2009-02-26 21:34:28 +0100 | [diff] [blame] | 245 | uint32_t h_start_width; |
| 246 | uint32_t v_start_width; |
Sascha Hauer | f910fb8 | 2011-12-01 14:58:52 +0100 | [diff] [blame] | 247 | enum disp_data_mapping disp_data_fmt; |
Guennadi Liakhovetski | 86528da | 2009-01-21 10:32:34 -0700 | [diff] [blame] | 248 | }; |
| 249 | |
| 250 | struct dma_chan_request { |
Guennadi Liakhovetski | 6e1588cb | 2009-02-26 21:34:28 +0100 | [diff] [blame] | 251 | struct mx3fb_data *mx3fb; |
| 252 | enum ipu_channel id; |
Guennadi Liakhovetski | 86528da | 2009-01-21 10:32:34 -0700 | [diff] [blame] | 253 | }; |
| 254 | |
| 255 | /* MX3 specific framebuffer information. */ |
| 256 | struct mx3fb_info { |
Guennadi Liakhovetski | 6e1588cb | 2009-02-26 21:34:28 +0100 | [diff] [blame] | 257 | int blank; |
| 258 | enum ipu_channel ipu_ch; |
| 259 | uint32_t cur_ipu_buf; |
Guennadi Liakhovetski | 86528da | 2009-01-21 10:32:34 -0700 | [diff] [blame] | 260 | |
Guennadi Liakhovetski | 6e1588cb | 2009-02-26 21:34:28 +0100 | [diff] [blame] | 261 | u32 pseudo_palette[16]; |
Guennadi Liakhovetski | 86528da | 2009-01-21 10:32:34 -0700 | [diff] [blame] | 262 | |
Guennadi Liakhovetski | 6e1588cb | 2009-02-26 21:34:28 +0100 | [diff] [blame] | 263 | struct completion flip_cmpl; |
| 264 | struct mutex mutex; /* Protects fb-ops */ |
| 265 | struct mx3fb_data *mx3fb; |
| 266 | struct idmac_channel *idmac_channel; |
| 267 | struct dma_async_tx_descriptor *txd; |
| 268 | dma_cookie_t cookie; |
| 269 | struct scatterlist sg[2]; |
Guennadi Liakhovetski | 86528da | 2009-01-21 10:32:34 -0700 | [diff] [blame] | 270 | |
Liu Ying | 6cd77e0 | 2012-06-11 09:06:49 +0800 | [diff] [blame] | 271 | struct fb_var_screeninfo cur_var; /* current var info */ |
Guennadi Liakhovetski | 86528da | 2009-01-21 10:32:34 -0700 | [diff] [blame] | 272 | }; |
| 273 | |
| 274 | static void mx3fb_dma_done(void *); |
| 275 | |
| 276 | /* Used fb-mode and bpp. Can be set on kernel command line, therefore file-static. */ |
| 277 | static const char *fb_mode; |
| 278 | static unsigned long default_bpp = 16; |
| 279 | |
| 280 | static u32 mx3fb_read_reg(struct mx3fb_data *mx3fb, unsigned long reg) |
| 281 | { |
Guennadi Liakhovetski | 6e1588cb | 2009-02-26 21:34:28 +0100 | [diff] [blame] | 282 | return __raw_readl(mx3fb->reg_base + reg); |
Guennadi Liakhovetski | 86528da | 2009-01-21 10:32:34 -0700 | [diff] [blame] | 283 | } |
| 284 | |
| 285 | static void mx3fb_write_reg(struct mx3fb_data *mx3fb, u32 value, unsigned long reg) |
| 286 | { |
Guennadi Liakhovetski | 6e1588cb | 2009-02-26 21:34:28 +0100 | [diff] [blame] | 287 | __raw_writel(value, mx3fb->reg_base + reg); |
Guennadi Liakhovetski | 86528da | 2009-01-21 10:32:34 -0700 | [diff] [blame] | 288 | } |
| 289 | |
Sascha Hauer | f910fb8 | 2011-12-01 14:58:52 +0100 | [diff] [blame] | 290 | struct di_mapping { |
| 291 | uint32_t b0, b1, b2; |
| 292 | }; |
| 293 | |
| 294 | static const struct di_mapping di_mappings[] = { |
| 295 | [IPU_DISP_DATA_MAPPING_RGB666] = { 0x0005000f, 0x000b000f, 0x0011000f }, |
| 296 | [IPU_DISP_DATA_MAPPING_RGB565] = { 0x0004003f, 0x000a000f, 0x000f003f }, |
| 297 | [IPU_DISP_DATA_MAPPING_RGB888] = { 0x00070000, 0x000f0000, 0x00170000 }, |
Guennadi Liakhovetski | 86528da | 2009-01-21 10:32:34 -0700 | [diff] [blame] | 298 | }; |
| 299 | |
| 300 | static void sdc_fb_init(struct mx3fb_info *fbi) |
| 301 | { |
Guennadi Liakhovetski | 6e1588cb | 2009-02-26 21:34:28 +0100 | [diff] [blame] | 302 | struct mx3fb_data *mx3fb = fbi->mx3fb; |
| 303 | uint32_t reg; |
Guennadi Liakhovetski | 86528da | 2009-01-21 10:32:34 -0700 | [diff] [blame] | 304 | |
Guennadi Liakhovetski | 6e1588cb | 2009-02-26 21:34:28 +0100 | [diff] [blame] | 305 | reg = mx3fb_read_reg(mx3fb, SDC_COM_CONF); |
Guennadi Liakhovetski | 86528da | 2009-01-21 10:32:34 -0700 | [diff] [blame] | 306 | |
Guennadi Liakhovetski | 6e1588cb | 2009-02-26 21:34:28 +0100 | [diff] [blame] | 307 | mx3fb_write_reg(mx3fb, reg | SDC_COM_BG_EN, SDC_COM_CONF); |
Guennadi Liakhovetski | 86528da | 2009-01-21 10:32:34 -0700 | [diff] [blame] | 308 | } |
| 309 | |
| 310 | /* Returns enabled flag before uninit */ |
| 311 | static uint32_t sdc_fb_uninit(struct mx3fb_info *fbi) |
| 312 | { |
Guennadi Liakhovetski | 6e1588cb | 2009-02-26 21:34:28 +0100 | [diff] [blame] | 313 | struct mx3fb_data *mx3fb = fbi->mx3fb; |
| 314 | uint32_t reg; |
Guennadi Liakhovetski | 86528da | 2009-01-21 10:32:34 -0700 | [diff] [blame] | 315 | |
Guennadi Liakhovetski | 6e1588cb | 2009-02-26 21:34:28 +0100 | [diff] [blame] | 316 | reg = mx3fb_read_reg(mx3fb, SDC_COM_CONF); |
Guennadi Liakhovetski | 86528da | 2009-01-21 10:32:34 -0700 | [diff] [blame] | 317 | |
Guennadi Liakhovetski | 6e1588cb | 2009-02-26 21:34:28 +0100 | [diff] [blame] | 318 | mx3fb_write_reg(mx3fb, reg & ~SDC_COM_BG_EN, SDC_COM_CONF); |
Guennadi Liakhovetski | 86528da | 2009-01-21 10:32:34 -0700 | [diff] [blame] | 319 | |
Guennadi Liakhovetski | 6e1588cb | 2009-02-26 21:34:28 +0100 | [diff] [blame] | 320 | return reg & SDC_COM_BG_EN; |
Guennadi Liakhovetski | 86528da | 2009-01-21 10:32:34 -0700 | [diff] [blame] | 321 | } |
| 322 | |
| 323 | static void sdc_enable_channel(struct mx3fb_info *mx3_fbi) |
| 324 | { |
Guennadi Liakhovetski | 6e1588cb | 2009-02-26 21:34:28 +0100 | [diff] [blame] | 325 | struct mx3fb_data *mx3fb = mx3_fbi->mx3fb; |
| 326 | struct idmac_channel *ichan = mx3_fbi->idmac_channel; |
| 327 | struct dma_chan *dma_chan = &ichan->dma_chan; |
| 328 | unsigned long flags; |
| 329 | dma_cookie_t cookie; |
Guennadi Liakhovetski | 86528da | 2009-01-21 10:32:34 -0700 | [diff] [blame] | 330 | |
Alberto Panizzo | b3cb537 | 2010-02-02 13:43:59 -0800 | [diff] [blame] | 331 | if (mx3_fbi->txd) |
| 332 | dev_dbg(mx3fb->dev, "mx3fbi %p, desc %p, sg %p\n", mx3_fbi, |
| 333 | to_tx_desc(mx3_fbi->txd), to_tx_desc(mx3_fbi->txd)->sg); |
| 334 | else |
| 335 | dev_dbg(mx3fb->dev, "mx3fbi %p, txd = NULL\n", mx3_fbi); |
Guennadi Liakhovetski | 86528da | 2009-01-21 10:32:34 -0700 | [diff] [blame] | 336 | |
Guennadi Liakhovetski | 6e1588cb | 2009-02-26 21:34:28 +0100 | [diff] [blame] | 337 | /* This enables the channel */ |
| 338 | if (mx3_fbi->cookie < 0) { |
Alexandre Bounine | 1605282 | 2012-03-08 16:11:18 -0500 | [diff] [blame] | 339 | mx3_fbi->txd = dmaengine_prep_slave_sg(dma_chan, |
Vinod Koul | 1003cab | 2011-10-14 10:39:23 +0530 | [diff] [blame] | 340 | &mx3_fbi->sg[0], 1, DMA_MEM_TO_DEV, DMA_PREP_INTERRUPT); |
Guennadi Liakhovetski | 6e1588cb | 2009-02-26 21:34:28 +0100 | [diff] [blame] | 341 | if (!mx3_fbi->txd) { |
| 342 | dev_err(mx3fb->dev, "Cannot allocate descriptor on %d\n", |
| 343 | dma_chan->chan_id); |
| 344 | return; |
| 345 | } |
Guennadi Liakhovetski | 86528da | 2009-01-21 10:32:34 -0700 | [diff] [blame] | 346 | |
Guennadi Liakhovetski | 6e1588cb | 2009-02-26 21:34:28 +0100 | [diff] [blame] | 347 | mx3_fbi->txd->callback_param = mx3_fbi->txd; |
| 348 | mx3_fbi->txd->callback = mx3fb_dma_done; |
Guennadi Liakhovetski | 86528da | 2009-01-21 10:32:34 -0700 | [diff] [blame] | 349 | |
Guennadi Liakhovetski | 6e1588cb | 2009-02-26 21:34:28 +0100 | [diff] [blame] | 350 | cookie = mx3_fbi->txd->tx_submit(mx3_fbi->txd); |
| 351 | dev_dbg(mx3fb->dev, "%d: Submit %p #%d [%c]\n", __LINE__, |
| 352 | mx3_fbi->txd, cookie, list_empty(&ichan->queue) ? '-' : '+'); |
| 353 | } else { |
| 354 | if (!mx3_fbi->txd || !mx3_fbi->txd->tx_submit) { |
| 355 | dev_err(mx3fb->dev, "Cannot enable channel %d\n", |
| 356 | dma_chan->chan_id); |
| 357 | return; |
| 358 | } |
Guennadi Liakhovetski | 86528da | 2009-01-21 10:32:34 -0700 | [diff] [blame] | 359 | |
Guennadi Liakhovetski | 6e1588cb | 2009-02-26 21:34:28 +0100 | [diff] [blame] | 360 | /* Just re-activate the same buffer */ |
| 361 | dma_async_issue_pending(dma_chan); |
| 362 | cookie = mx3_fbi->cookie; |
| 363 | dev_dbg(mx3fb->dev, "%d: Re-submit %p #%d [%c]\n", __LINE__, |
| 364 | mx3_fbi->txd, cookie, list_empty(&ichan->queue) ? '-' : '+'); |
| 365 | } |
Guennadi Liakhovetski | 86528da | 2009-01-21 10:32:34 -0700 | [diff] [blame] | 366 | |
Guennadi Liakhovetski | 6e1588cb | 2009-02-26 21:34:28 +0100 | [diff] [blame] | 367 | if (cookie >= 0) { |
| 368 | spin_lock_irqsave(&mx3fb->lock, flags); |
| 369 | sdc_fb_init(mx3_fbi); |
| 370 | mx3_fbi->cookie = cookie; |
| 371 | spin_unlock_irqrestore(&mx3fb->lock, flags); |
| 372 | } |
Guennadi Liakhovetski | 86528da | 2009-01-21 10:32:34 -0700 | [diff] [blame] | 373 | |
Guennadi Liakhovetski | 6e1588cb | 2009-02-26 21:34:28 +0100 | [diff] [blame] | 374 | /* |
| 375 | * Attention! Without this msleep the channel keeps generating |
| 376 | * interrupts. Next sdc_set_brightness() is going to be called |
| 377 | * from mx3fb_blank(). |
| 378 | */ |
| 379 | msleep(2); |
Guennadi Liakhovetski | 86528da | 2009-01-21 10:32:34 -0700 | [diff] [blame] | 380 | } |
| 381 | |
| 382 | static void sdc_disable_channel(struct mx3fb_info *mx3_fbi) |
| 383 | { |
Guennadi Liakhovetski | 6e1588cb | 2009-02-26 21:34:28 +0100 | [diff] [blame] | 384 | struct mx3fb_data *mx3fb = mx3_fbi->mx3fb; |
| 385 | uint32_t enabled; |
| 386 | unsigned long flags; |
Guennadi Liakhovetski | 86528da | 2009-01-21 10:32:34 -0700 | [diff] [blame] | 387 | |
Wolfram Stering | 8b53b7f | 2011-09-23 14:09:35 +0200 | [diff] [blame] | 388 | if (mx3_fbi->txd == NULL) |
| 389 | return; |
| 390 | |
Guennadi Liakhovetski | 6e1588cb | 2009-02-26 21:34:28 +0100 | [diff] [blame] | 391 | spin_lock_irqsave(&mx3fb->lock, flags); |
Guennadi Liakhovetski | 86528da | 2009-01-21 10:32:34 -0700 | [diff] [blame] | 392 | |
Guennadi Liakhovetski | 6e1588cb | 2009-02-26 21:34:28 +0100 | [diff] [blame] | 393 | enabled = sdc_fb_uninit(mx3_fbi); |
Guennadi Liakhovetski | 86528da | 2009-01-21 10:32:34 -0700 | [diff] [blame] | 394 | |
Guennadi Liakhovetski | 6e1588cb | 2009-02-26 21:34:28 +0100 | [diff] [blame] | 395 | spin_unlock_irqrestore(&mx3fb->lock, flags); |
Guennadi Liakhovetski | 86528da | 2009-01-21 10:32:34 -0700 | [diff] [blame] | 396 | |
Linus Walleij | c3635c7 | 2010-03-26 16:44:01 -0700 | [diff] [blame] | 397 | mx3_fbi->txd->chan->device->device_control(mx3_fbi->txd->chan, |
Linus Walleij | 0582763 | 2010-05-17 16:30:42 -0700 | [diff] [blame] | 398 | DMA_TERMINATE_ALL, 0); |
Guennadi Liakhovetski | 6e1588cb | 2009-02-26 21:34:28 +0100 | [diff] [blame] | 399 | mx3_fbi->txd = NULL; |
| 400 | mx3_fbi->cookie = -EINVAL; |
Guennadi Liakhovetski | 86528da | 2009-01-21 10:32:34 -0700 | [diff] [blame] | 401 | } |
| 402 | |
| 403 | /** |
| 404 | * sdc_set_window_pos() - set window position of the respective plane. |
Guennadi Liakhovetski | 6e1588cb | 2009-02-26 21:34:28 +0100 | [diff] [blame] | 405 | * @mx3fb: mx3fb context. |
| 406 | * @channel: IPU DMAC channel ID. |
| 407 | * @x_pos: X coordinate relative to the top left corner to place window at. |
| 408 | * @y_pos: Y coordinate relative to the top left corner to place window at. |
| 409 | * @return: 0 on success or negative error code on failure. |
Guennadi Liakhovetski | 86528da | 2009-01-21 10:32:34 -0700 | [diff] [blame] | 410 | */ |
| 411 | static int sdc_set_window_pos(struct mx3fb_data *mx3fb, enum ipu_channel channel, |
Guennadi Liakhovetski | 6e1588cb | 2009-02-26 21:34:28 +0100 | [diff] [blame] | 412 | int16_t x_pos, int16_t y_pos) |
Guennadi Liakhovetski | 86528da | 2009-01-21 10:32:34 -0700 | [diff] [blame] | 413 | { |
Guennadi Liakhovetski | 6e1588cb | 2009-02-26 21:34:28 +0100 | [diff] [blame] | 414 | if (channel != IDMAC_SDC_0) |
| 415 | return -EINVAL; |
Guennadi Liakhovetski | 86528da | 2009-01-21 10:32:34 -0700 | [diff] [blame] | 416 | |
Guennadi Liakhovetski | d88ca815 | 2009-04-06 19:01:05 -0700 | [diff] [blame] | 417 | x_pos += mx3fb->h_start_width; |
| 418 | y_pos += mx3fb->v_start_width; |
| 419 | |
Guennadi Liakhovetski | 6e1588cb | 2009-02-26 21:34:28 +0100 | [diff] [blame] | 420 | mx3fb_write_reg(mx3fb, (x_pos << 16) | y_pos, SDC_BG_POS); |
| 421 | return 0; |
Guennadi Liakhovetski | 86528da | 2009-01-21 10:32:34 -0700 | [diff] [blame] | 422 | } |
| 423 | |
| 424 | /** |
| 425 | * sdc_init_panel() - initialize a synchronous LCD panel. |
Guennadi Liakhovetski | 6e1588cb | 2009-02-26 21:34:28 +0100 | [diff] [blame] | 426 | * @mx3fb: mx3fb context. |
| 427 | * @panel: panel type. |
| 428 | * @pixel_clk: desired pixel clock frequency in Hz. |
| 429 | * @width: width of panel in pixels. |
| 430 | * @height: height of panel in pixels. |
Guennadi Liakhovetski | 6e1588cb | 2009-02-26 21:34:28 +0100 | [diff] [blame] | 431 | * @h_start_width: number of pixel clocks between the HSYNC signal pulse |
| 432 | * and the start of valid data. |
| 433 | * @h_sync_width: width of the HSYNC signal in units of pixel clocks. |
| 434 | * @h_end_width: number of pixel clocks between the end of valid data |
| 435 | * and the HSYNC signal for next line. |
| 436 | * @v_start_width: number of lines between the VSYNC signal pulse and the |
| 437 | * start of valid data. |
| 438 | * @v_sync_width: width of the VSYNC signal in units of lines |
| 439 | * @v_end_width: number of lines between the end of valid data and the |
| 440 | * VSYNC signal for next frame. |
| 441 | * @sig: bitfield of signal polarities for LCD interface. |
| 442 | * @return: 0 on success or negative error code on failure. |
Guennadi Liakhovetski | 86528da | 2009-01-21 10:32:34 -0700 | [diff] [blame] | 443 | */ |
| 444 | static int sdc_init_panel(struct mx3fb_data *mx3fb, enum ipu_panel panel, |
Guennadi Liakhovetski | 6e1588cb | 2009-02-26 21:34:28 +0100 | [diff] [blame] | 445 | uint32_t pixel_clk, |
| 446 | uint16_t width, uint16_t height, |
Guennadi Liakhovetski | 6e1588cb | 2009-02-26 21:34:28 +0100 | [diff] [blame] | 447 | uint16_t h_start_width, uint16_t h_sync_width, |
| 448 | uint16_t h_end_width, uint16_t v_start_width, |
| 449 | uint16_t v_sync_width, uint16_t v_end_width, |
| 450 | struct ipu_di_signal_cfg sig) |
Guennadi Liakhovetski | 86528da | 2009-01-21 10:32:34 -0700 | [diff] [blame] | 451 | { |
Guennadi Liakhovetski | 6e1588cb | 2009-02-26 21:34:28 +0100 | [diff] [blame] | 452 | unsigned long lock_flags; |
| 453 | uint32_t reg; |
| 454 | uint32_t old_conf; |
| 455 | uint32_t div; |
| 456 | struct clk *ipu_clk; |
Sascha Hauer | f910fb8 | 2011-12-01 14:58:52 +0100 | [diff] [blame] | 457 | const struct di_mapping *map; |
Guennadi Liakhovetski | 86528da | 2009-01-21 10:32:34 -0700 | [diff] [blame] | 458 | |
Guennadi Liakhovetski | 6e1588cb | 2009-02-26 21:34:28 +0100 | [diff] [blame] | 459 | dev_dbg(mx3fb->dev, "panel size = %d x %d", width, height); |
Guennadi Liakhovetski | 86528da | 2009-01-21 10:32:34 -0700 | [diff] [blame] | 460 | |
Guennadi Liakhovetski | 6e1588cb | 2009-02-26 21:34:28 +0100 | [diff] [blame] | 461 | if (v_sync_width == 0 || h_sync_width == 0) |
| 462 | return -EINVAL; |
Guennadi Liakhovetski | 86528da | 2009-01-21 10:32:34 -0700 | [diff] [blame] | 463 | |
Guennadi Liakhovetski | 6e1588cb | 2009-02-26 21:34:28 +0100 | [diff] [blame] | 464 | /* Init panel size and blanking periods */ |
| 465 | reg = ((uint32_t) (h_sync_width - 1) << 26) | |
| 466 | ((uint32_t) (width + h_start_width + h_end_width - 1) << 16); |
| 467 | mx3fb_write_reg(mx3fb, reg, SDC_HOR_CONF); |
Guennadi Liakhovetski | 86528da | 2009-01-21 10:32:34 -0700 | [diff] [blame] | 468 | |
| 469 | #ifdef DEBUG |
Guennadi Liakhovetski | 6e1588cb | 2009-02-26 21:34:28 +0100 | [diff] [blame] | 470 | printk(KERN_CONT " hor_conf %x,", reg); |
Guennadi Liakhovetski | 86528da | 2009-01-21 10:32:34 -0700 | [diff] [blame] | 471 | #endif |
| 472 | |
Guennadi Liakhovetski | 6e1588cb | 2009-02-26 21:34:28 +0100 | [diff] [blame] | 473 | reg = ((uint32_t) (v_sync_width - 1) << 26) | SDC_V_SYNC_WIDTH_L | |
| 474 | ((uint32_t) (height + v_start_width + v_end_width - 1) << 16); |
| 475 | mx3fb_write_reg(mx3fb, reg, SDC_VER_CONF); |
Guennadi Liakhovetski | 86528da | 2009-01-21 10:32:34 -0700 | [diff] [blame] | 476 | |
| 477 | #ifdef DEBUG |
Guennadi Liakhovetski | 6e1588cb | 2009-02-26 21:34:28 +0100 | [diff] [blame] | 478 | printk(KERN_CONT " ver_conf %x\n", reg); |
Guennadi Liakhovetski | 86528da | 2009-01-21 10:32:34 -0700 | [diff] [blame] | 479 | #endif |
| 480 | |
Guennadi Liakhovetski | 6e1588cb | 2009-02-26 21:34:28 +0100 | [diff] [blame] | 481 | mx3fb->h_start_width = h_start_width; |
| 482 | mx3fb->v_start_width = v_start_width; |
Guennadi Liakhovetski | 86528da | 2009-01-21 10:32:34 -0700 | [diff] [blame] | 483 | |
Guennadi Liakhovetski | 6e1588cb | 2009-02-26 21:34:28 +0100 | [diff] [blame] | 484 | switch (panel) { |
| 485 | case IPU_PANEL_SHARP_TFT: |
| 486 | mx3fb_write_reg(mx3fb, 0x00FD0102L, SDC_SHARP_CONF_1); |
| 487 | mx3fb_write_reg(mx3fb, 0x00F500F4L, SDC_SHARP_CONF_2); |
| 488 | mx3fb_write_reg(mx3fb, SDC_COM_SHARP | SDC_COM_TFT_COLOR, SDC_COM_CONF); |
| 489 | break; |
| 490 | case IPU_PANEL_TFT: |
| 491 | mx3fb_write_reg(mx3fb, SDC_COM_TFT_COLOR, SDC_COM_CONF); |
| 492 | break; |
| 493 | default: |
| 494 | return -EINVAL; |
| 495 | } |
Guennadi Liakhovetski | 86528da | 2009-01-21 10:32:34 -0700 | [diff] [blame] | 496 | |
Guennadi Liakhovetski | 6e1588cb | 2009-02-26 21:34:28 +0100 | [diff] [blame] | 497 | /* Init clocking */ |
Guennadi Liakhovetski | 86528da | 2009-01-21 10:32:34 -0700 | [diff] [blame] | 498 | |
Guennadi Liakhovetski | 6e1588cb | 2009-02-26 21:34:28 +0100 | [diff] [blame] | 499 | /* |
| 500 | * Calculate divider: fractional part is 4 bits so simply multiple by |
| 501 | * 2^4 to get fractional part, as long as we stay under ~250MHz and on |
| 502 | * i.MX31 it (HSP_CLK) is <= 178MHz. Currently 128.267MHz |
| 503 | */ |
Russell King | 3879f5d | 2009-03-16 22:28:04 +0000 | [diff] [blame] | 504 | ipu_clk = clk_get(mx3fb->dev, NULL); |
Guennadi Liakhovetski | d88ca815 | 2009-04-06 19:01:05 -0700 | [diff] [blame] | 505 | if (!IS_ERR(ipu_clk)) { |
| 506 | div = clk_get_rate(ipu_clk) * 16 / pixel_clk; |
| 507 | clk_put(ipu_clk); |
| 508 | } else { |
| 509 | div = 0; |
| 510 | } |
Guennadi Liakhovetski | 86528da | 2009-01-21 10:32:34 -0700 | [diff] [blame] | 511 | |
Guennadi Liakhovetski | 6e1588cb | 2009-02-26 21:34:28 +0100 | [diff] [blame] | 512 | if (div < 0x40) { /* Divider less than 4 */ |
| 513 | dev_dbg(mx3fb->dev, |
| 514 | "InitPanel() - Pixel clock divider less than 4\n"); |
| 515 | div = 0x40; |
| 516 | } |
Guennadi Liakhovetski | 86528da | 2009-01-21 10:32:34 -0700 | [diff] [blame] | 517 | |
Guennadi Liakhovetski | d88ca815 | 2009-04-06 19:01:05 -0700 | [diff] [blame] | 518 | dev_dbg(mx3fb->dev, "pixel clk = %u, divider %u.%u\n", |
| 519 | pixel_clk, div >> 4, (div & 7) * 125); |
| 520 | |
Guennadi Liakhovetski | 6e1588cb | 2009-02-26 21:34:28 +0100 | [diff] [blame] | 521 | spin_lock_irqsave(&mx3fb->lock, lock_flags); |
Guennadi Liakhovetski | 86528da | 2009-01-21 10:32:34 -0700 | [diff] [blame] | 522 | |
Guennadi Liakhovetski | 6e1588cb | 2009-02-26 21:34:28 +0100 | [diff] [blame] | 523 | /* |
| 524 | * DISP3_IF_CLK_DOWN_WR is half the divider value and 2 fraction bits |
| 525 | * fewer. Subtract 1 extra from DISP3_IF_CLK_DOWN_WR based on timing |
| 526 | * debug. DISP3_IF_CLK_UP_WR is 0 |
| 527 | */ |
| 528 | mx3fb_write_reg(mx3fb, (((div / 8) - 1) << 22) | div, DI_DISP3_TIME_CONF); |
Guennadi Liakhovetski | 86528da | 2009-01-21 10:32:34 -0700 | [diff] [blame] | 529 | |
Guennadi Liakhovetski | 6e1588cb | 2009-02-26 21:34:28 +0100 | [diff] [blame] | 530 | /* DI settings */ |
| 531 | old_conf = mx3fb_read_reg(mx3fb, DI_DISP_IF_CONF) & 0x78FFFFFF; |
| 532 | old_conf |= sig.datamask_en << DI_D3_DATAMSK_SHIFT | |
Guennadi Liakhovetski | d88ca815 | 2009-04-06 19:01:05 -0700 | [diff] [blame] | 533 | sig.clksel_en << DI_D3_CLK_SEL_SHIFT | |
| 534 | sig.clkidle_en << DI_D3_CLK_IDLE_SHIFT; |
Guennadi Liakhovetski | 6e1588cb | 2009-02-26 21:34:28 +0100 | [diff] [blame] | 535 | mx3fb_write_reg(mx3fb, old_conf, DI_DISP_IF_CONF); |
Guennadi Liakhovetski | 86528da | 2009-01-21 10:32:34 -0700 | [diff] [blame] | 536 | |
Guennadi Liakhovetski | 6e1588cb | 2009-02-26 21:34:28 +0100 | [diff] [blame] | 537 | old_conf = mx3fb_read_reg(mx3fb, DI_DISP_SIG_POL) & 0xE0FFFFFF; |
| 538 | old_conf |= sig.data_pol << DI_D3_DATA_POL_SHIFT | |
Guennadi Liakhovetski | d88ca815 | 2009-04-06 19:01:05 -0700 | [diff] [blame] | 539 | sig.clk_pol << DI_D3_CLK_POL_SHIFT | |
| 540 | sig.enable_pol << DI_D3_DRDY_SHARP_POL_SHIFT | |
| 541 | sig.Hsync_pol << DI_D3_HSYNC_POL_SHIFT | |
| 542 | sig.Vsync_pol << DI_D3_VSYNC_POL_SHIFT; |
Guennadi Liakhovetski | 6e1588cb | 2009-02-26 21:34:28 +0100 | [diff] [blame] | 543 | mx3fb_write_reg(mx3fb, old_conf, DI_DISP_SIG_POL); |
Guennadi Liakhovetski | 86528da | 2009-01-21 10:32:34 -0700 | [diff] [blame] | 544 | |
Sascha Hauer | f910fb8 | 2011-12-01 14:58:52 +0100 | [diff] [blame] | 545 | map = &di_mappings[mx3fb->disp_data_fmt]; |
| 546 | mx3fb_write_reg(mx3fb, map->b0, DI_DISP3_B0_MAP); |
| 547 | mx3fb_write_reg(mx3fb, map->b1, DI_DISP3_B1_MAP); |
| 548 | mx3fb_write_reg(mx3fb, map->b2, DI_DISP3_B2_MAP); |
Guennadi Liakhovetski | 86528da | 2009-01-21 10:32:34 -0700 | [diff] [blame] | 549 | |
Guennadi Liakhovetski | 6e1588cb | 2009-02-26 21:34:28 +0100 | [diff] [blame] | 550 | spin_unlock_irqrestore(&mx3fb->lock, lock_flags); |
Guennadi Liakhovetski | 86528da | 2009-01-21 10:32:34 -0700 | [diff] [blame] | 551 | |
Guennadi Liakhovetski | 6e1588cb | 2009-02-26 21:34:28 +0100 | [diff] [blame] | 552 | dev_dbg(mx3fb->dev, "DI_DISP_IF_CONF = 0x%08X\n", |
| 553 | mx3fb_read_reg(mx3fb, DI_DISP_IF_CONF)); |
| 554 | dev_dbg(mx3fb->dev, "DI_DISP_SIG_POL = 0x%08X\n", |
| 555 | mx3fb_read_reg(mx3fb, DI_DISP_SIG_POL)); |
| 556 | dev_dbg(mx3fb->dev, "DI_DISP3_TIME_CONF = 0x%08X\n", |
| 557 | mx3fb_read_reg(mx3fb, DI_DISP3_TIME_CONF)); |
Guennadi Liakhovetski | 86528da | 2009-01-21 10:32:34 -0700 | [diff] [blame] | 558 | |
Guennadi Liakhovetski | 6e1588cb | 2009-02-26 21:34:28 +0100 | [diff] [blame] | 559 | return 0; |
Guennadi Liakhovetski | 86528da | 2009-01-21 10:32:34 -0700 | [diff] [blame] | 560 | } |
| 561 | |
| 562 | /** |
| 563 | * sdc_set_color_key() - set the transparent color key for SDC graphic plane. |
Guennadi Liakhovetski | 6e1588cb | 2009-02-26 21:34:28 +0100 | [diff] [blame] | 564 | * @mx3fb: mx3fb context. |
| 565 | * @channel: IPU DMAC channel ID. |
| 566 | * @enable: boolean to enable or disable color keyl. |
| 567 | * @color_key: 24-bit RGB color to use as transparent color key. |
| 568 | * @return: 0 on success or negative error code on failure. |
Guennadi Liakhovetski | 86528da | 2009-01-21 10:32:34 -0700 | [diff] [blame] | 569 | */ |
| 570 | static int sdc_set_color_key(struct mx3fb_data *mx3fb, enum ipu_channel channel, |
Guennadi Liakhovetski | 6e1588cb | 2009-02-26 21:34:28 +0100 | [diff] [blame] | 571 | bool enable, uint32_t color_key) |
Guennadi Liakhovetski | 86528da | 2009-01-21 10:32:34 -0700 | [diff] [blame] | 572 | { |
Guennadi Liakhovetski | 6e1588cb | 2009-02-26 21:34:28 +0100 | [diff] [blame] | 573 | uint32_t reg, sdc_conf; |
| 574 | unsigned long lock_flags; |
Guennadi Liakhovetski | 86528da | 2009-01-21 10:32:34 -0700 | [diff] [blame] | 575 | |
Guennadi Liakhovetski | 6e1588cb | 2009-02-26 21:34:28 +0100 | [diff] [blame] | 576 | spin_lock_irqsave(&mx3fb->lock, lock_flags); |
Guennadi Liakhovetski | 86528da | 2009-01-21 10:32:34 -0700 | [diff] [blame] | 577 | |
Guennadi Liakhovetski | 6e1588cb | 2009-02-26 21:34:28 +0100 | [diff] [blame] | 578 | sdc_conf = mx3fb_read_reg(mx3fb, SDC_COM_CONF); |
| 579 | if (channel == IDMAC_SDC_0) |
| 580 | sdc_conf &= ~SDC_COM_GWSEL; |
| 581 | else |
| 582 | sdc_conf |= SDC_COM_GWSEL; |
Guennadi Liakhovetski | 86528da | 2009-01-21 10:32:34 -0700 | [diff] [blame] | 583 | |
Guennadi Liakhovetski | 6e1588cb | 2009-02-26 21:34:28 +0100 | [diff] [blame] | 584 | if (enable) { |
| 585 | reg = mx3fb_read_reg(mx3fb, SDC_GW_CTRL) & 0xFF000000L; |
| 586 | mx3fb_write_reg(mx3fb, reg | (color_key & 0x00FFFFFFL), |
| 587 | SDC_GW_CTRL); |
Guennadi Liakhovetski | 86528da | 2009-01-21 10:32:34 -0700 | [diff] [blame] | 588 | |
Guennadi Liakhovetski | 6e1588cb | 2009-02-26 21:34:28 +0100 | [diff] [blame] | 589 | sdc_conf |= SDC_COM_KEY_COLOR_G; |
| 590 | } else { |
| 591 | sdc_conf &= ~SDC_COM_KEY_COLOR_G; |
| 592 | } |
| 593 | mx3fb_write_reg(mx3fb, sdc_conf, SDC_COM_CONF); |
Guennadi Liakhovetski | 86528da | 2009-01-21 10:32:34 -0700 | [diff] [blame] | 594 | |
Guennadi Liakhovetski | 6e1588cb | 2009-02-26 21:34:28 +0100 | [diff] [blame] | 595 | spin_unlock_irqrestore(&mx3fb->lock, lock_flags); |
Guennadi Liakhovetski | 86528da | 2009-01-21 10:32:34 -0700 | [diff] [blame] | 596 | |
Guennadi Liakhovetski | 6e1588cb | 2009-02-26 21:34:28 +0100 | [diff] [blame] | 597 | return 0; |
Guennadi Liakhovetski | 86528da | 2009-01-21 10:32:34 -0700 | [diff] [blame] | 598 | } |
| 599 | |
| 600 | /** |
| 601 | * sdc_set_global_alpha() - set global alpha blending modes. |
Guennadi Liakhovetski | 6e1588cb | 2009-02-26 21:34:28 +0100 | [diff] [blame] | 602 | * @mx3fb: mx3fb context. |
| 603 | * @enable: boolean to enable or disable global alpha blending. If disabled, |
| 604 | * per pixel blending is used. |
| 605 | * @alpha: global alpha value. |
| 606 | * @return: 0 on success or negative error code on failure. |
Guennadi Liakhovetski | 86528da | 2009-01-21 10:32:34 -0700 | [diff] [blame] | 607 | */ |
| 608 | static int sdc_set_global_alpha(struct mx3fb_data *mx3fb, bool enable, uint8_t alpha) |
| 609 | { |
Guennadi Liakhovetski | 6e1588cb | 2009-02-26 21:34:28 +0100 | [diff] [blame] | 610 | uint32_t reg; |
| 611 | unsigned long lock_flags; |
Guennadi Liakhovetski | 86528da | 2009-01-21 10:32:34 -0700 | [diff] [blame] | 612 | |
Guennadi Liakhovetski | 6e1588cb | 2009-02-26 21:34:28 +0100 | [diff] [blame] | 613 | spin_lock_irqsave(&mx3fb->lock, lock_flags); |
Guennadi Liakhovetski | 86528da | 2009-01-21 10:32:34 -0700 | [diff] [blame] | 614 | |
Guennadi Liakhovetski | 6e1588cb | 2009-02-26 21:34:28 +0100 | [diff] [blame] | 615 | if (enable) { |
| 616 | reg = mx3fb_read_reg(mx3fb, SDC_GW_CTRL) & 0x00FFFFFFL; |
| 617 | mx3fb_write_reg(mx3fb, reg | ((uint32_t) alpha << 24), SDC_GW_CTRL); |
Guennadi Liakhovetski | 86528da | 2009-01-21 10:32:34 -0700 | [diff] [blame] | 618 | |
Guennadi Liakhovetski | 6e1588cb | 2009-02-26 21:34:28 +0100 | [diff] [blame] | 619 | reg = mx3fb_read_reg(mx3fb, SDC_COM_CONF); |
| 620 | mx3fb_write_reg(mx3fb, reg | SDC_COM_GLB_A, SDC_COM_CONF); |
| 621 | } else { |
| 622 | reg = mx3fb_read_reg(mx3fb, SDC_COM_CONF); |
| 623 | mx3fb_write_reg(mx3fb, reg & ~SDC_COM_GLB_A, SDC_COM_CONF); |
| 624 | } |
Guennadi Liakhovetski | 86528da | 2009-01-21 10:32:34 -0700 | [diff] [blame] | 625 | |
Guennadi Liakhovetski | 6e1588cb | 2009-02-26 21:34:28 +0100 | [diff] [blame] | 626 | spin_unlock_irqrestore(&mx3fb->lock, lock_flags); |
Guennadi Liakhovetski | 86528da | 2009-01-21 10:32:34 -0700 | [diff] [blame] | 627 | |
Guennadi Liakhovetski | 6e1588cb | 2009-02-26 21:34:28 +0100 | [diff] [blame] | 628 | return 0; |
Guennadi Liakhovetski | 86528da | 2009-01-21 10:32:34 -0700 | [diff] [blame] | 629 | } |
| 630 | |
| 631 | static void sdc_set_brightness(struct mx3fb_data *mx3fb, uint8_t value) |
| 632 | { |
Alberto Panizzo | b3cb537 | 2010-02-02 13:43:59 -0800 | [diff] [blame] | 633 | dev_dbg(mx3fb->dev, "%s: value = %d\n", __func__, value); |
Guennadi Liakhovetski | 6e1588cb | 2009-02-26 21:34:28 +0100 | [diff] [blame] | 634 | /* This might be board-specific */ |
| 635 | mx3fb_write_reg(mx3fb, 0x03000000UL | value << 16, SDC_PWM_CTRL); |
| 636 | return; |
Guennadi Liakhovetski | 86528da | 2009-01-21 10:32:34 -0700 | [diff] [blame] | 637 | } |
| 638 | |
| 639 | static uint32_t bpp_to_pixfmt(int bpp) |
| 640 | { |
Guennadi Liakhovetski | 6e1588cb | 2009-02-26 21:34:28 +0100 | [diff] [blame] | 641 | uint32_t pixfmt = 0; |
| 642 | switch (bpp) { |
| 643 | case 24: |
| 644 | pixfmt = IPU_PIX_FMT_BGR24; |
| 645 | break; |
| 646 | case 32: |
| 647 | pixfmt = IPU_PIX_FMT_BGR32; |
| 648 | break; |
| 649 | case 16: |
| 650 | pixfmt = IPU_PIX_FMT_RGB565; |
| 651 | break; |
| 652 | } |
| 653 | return pixfmt; |
Guennadi Liakhovetski | 86528da | 2009-01-21 10:32:34 -0700 | [diff] [blame] | 654 | } |
| 655 | |
| 656 | static int mx3fb_blank(int blank, struct fb_info *fbi); |
Guennadi Liakhovetski | 20de03d | 2009-08-06 15:07:40 -0700 | [diff] [blame] | 657 | static int mx3fb_map_video_memory(struct fb_info *fbi, unsigned int mem_len, |
| 658 | bool lock); |
Guennadi Liakhovetski | 86528da | 2009-01-21 10:32:34 -0700 | [diff] [blame] | 659 | static int mx3fb_unmap_video_memory(struct fb_info *fbi); |
| 660 | |
| 661 | /** |
| 662 | * mx3fb_set_fix() - set fixed framebuffer parameters from variable settings. |
Guennadi Liakhovetski | 6e1588cb | 2009-02-26 21:34:28 +0100 | [diff] [blame] | 663 | * @info: framebuffer information pointer |
| 664 | * @return: 0 on success or negative error code on failure. |
Guennadi Liakhovetski | 86528da | 2009-01-21 10:32:34 -0700 | [diff] [blame] | 665 | */ |
| 666 | static int mx3fb_set_fix(struct fb_info *fbi) |
| 667 | { |
Guennadi Liakhovetski | 6e1588cb | 2009-02-26 21:34:28 +0100 | [diff] [blame] | 668 | struct fb_fix_screeninfo *fix = &fbi->fix; |
| 669 | struct fb_var_screeninfo *var = &fbi->var; |
Guennadi Liakhovetski | 86528da | 2009-01-21 10:32:34 -0700 | [diff] [blame] | 670 | |
Guennadi Liakhovetski | 6e1588cb | 2009-02-26 21:34:28 +0100 | [diff] [blame] | 671 | strncpy(fix->id, "DISP3 BG", 8); |
Guennadi Liakhovetski | 86528da | 2009-01-21 10:32:34 -0700 | [diff] [blame] | 672 | |
Guennadi Liakhovetski | 6e1588cb | 2009-02-26 21:34:28 +0100 | [diff] [blame] | 673 | fix->line_length = var->xres_virtual * var->bits_per_pixel / 8; |
Guennadi Liakhovetski | 86528da | 2009-01-21 10:32:34 -0700 | [diff] [blame] | 674 | |
Guennadi Liakhovetski | 6e1588cb | 2009-02-26 21:34:28 +0100 | [diff] [blame] | 675 | fix->type = FB_TYPE_PACKED_PIXELS; |
| 676 | fix->accel = FB_ACCEL_NONE; |
| 677 | fix->visual = FB_VISUAL_TRUECOLOR; |
| 678 | fix->xpanstep = 1; |
| 679 | fix->ypanstep = 1; |
Guennadi Liakhovetski | 86528da | 2009-01-21 10:32:34 -0700 | [diff] [blame] | 680 | |
Guennadi Liakhovetski | 6e1588cb | 2009-02-26 21:34:28 +0100 | [diff] [blame] | 681 | return 0; |
Guennadi Liakhovetski | 86528da | 2009-01-21 10:32:34 -0700 | [diff] [blame] | 682 | } |
| 683 | |
| 684 | static void mx3fb_dma_done(void *arg) |
| 685 | { |
Guennadi Liakhovetski | 6e1588cb | 2009-02-26 21:34:28 +0100 | [diff] [blame] | 686 | struct idmac_tx_desc *tx_desc = to_tx_desc(arg); |
| 687 | struct dma_chan *chan = tx_desc->txd.chan; |
| 688 | struct idmac_channel *ichannel = to_idmac_chan(chan); |
| 689 | struct mx3fb_data *mx3fb = ichannel->client; |
| 690 | struct mx3fb_info *mx3_fbi = mx3fb->fbi->par; |
Guennadi Liakhovetski | 86528da | 2009-01-21 10:32:34 -0700 | [diff] [blame] | 691 | |
Guennadi Liakhovetski | 6e1588cb | 2009-02-26 21:34:28 +0100 | [diff] [blame] | 692 | dev_dbg(mx3fb->dev, "irq %d callback\n", ichannel->eof_irq); |
Guennadi Liakhovetski | 86528da | 2009-01-21 10:32:34 -0700 | [diff] [blame] | 693 | |
Guennadi Liakhovetski | 6e1588cb | 2009-02-26 21:34:28 +0100 | [diff] [blame] | 694 | /* We only need one interrupt, it will be re-enabled as needed */ |
Guennadi Liakhovetski | c8a4fb4 | 2009-05-12 21:41:03 +0200 | [diff] [blame] | 695 | disable_irq_nosync(ichannel->eof_irq); |
Guennadi Liakhovetski | 86528da | 2009-01-21 10:32:34 -0700 | [diff] [blame] | 696 | |
Guennadi Liakhovetski | 6e1588cb | 2009-02-26 21:34:28 +0100 | [diff] [blame] | 697 | complete(&mx3_fbi->flip_cmpl); |
Guennadi Liakhovetski | 86528da | 2009-01-21 10:32:34 -0700 | [diff] [blame] | 698 | } |
| 699 | |
Liu Ying | 41a490ec | 2012-06-11 09:06:50 +0800 | [diff] [blame] | 700 | static bool mx3fb_must_set_par(struct fb_info *fbi) |
| 701 | { |
| 702 | struct mx3fb_info *mx3_fbi = fbi->par; |
| 703 | struct fb_var_screeninfo old_var = mx3_fbi->cur_var; |
| 704 | struct fb_var_screeninfo new_var = fbi->var; |
| 705 | |
| 706 | if ((fbi->var.activate & FB_ACTIVATE_FORCE) && |
| 707 | (fbi->var.activate & FB_ACTIVATE_MASK) == FB_ACTIVATE_NOW) |
| 708 | return true; |
| 709 | |
| 710 | /* |
| 711 | * Ignore xoffset and yoffset update, |
| 712 | * because pan display handles this case. |
| 713 | */ |
| 714 | old_var.xoffset = new_var.xoffset; |
| 715 | old_var.yoffset = new_var.yoffset; |
| 716 | |
| 717 | return !!memcmp(&old_var, &new_var, sizeof(struct fb_var_screeninfo)); |
| 718 | } |
| 719 | |
Guennadi Liakhovetski | 20de03d | 2009-08-06 15:07:40 -0700 | [diff] [blame] | 720 | static int __set_par(struct fb_info *fbi, bool lock) |
Guennadi Liakhovetski | 86528da | 2009-01-21 10:32:34 -0700 | [diff] [blame] | 721 | { |
Liu Ying | 6cd77e0 | 2012-06-11 09:06:49 +0800 | [diff] [blame] | 722 | u32 mem_len, cur_xoffset, cur_yoffset; |
Guennadi Liakhovetski | 6e1588cb | 2009-02-26 21:34:28 +0100 | [diff] [blame] | 723 | struct ipu_di_signal_cfg sig_cfg; |
| 724 | enum ipu_panel mode = IPU_PANEL_TFT; |
| 725 | struct mx3fb_info *mx3_fbi = fbi->par; |
| 726 | struct mx3fb_data *mx3fb = mx3_fbi->mx3fb; |
| 727 | struct idmac_channel *ichan = mx3_fbi->idmac_channel; |
| 728 | struct idmac_video_param *video = &ichan->params.video; |
| 729 | struct scatterlist *sg = mx3_fbi->sg; |
Guennadi Liakhovetski | 86528da | 2009-01-21 10:32:34 -0700 | [diff] [blame] | 730 | |
Guennadi Liakhovetski | 6e1588cb | 2009-02-26 21:34:28 +0100 | [diff] [blame] | 731 | /* Total cleanup */ |
| 732 | if (mx3_fbi->txd) |
| 733 | sdc_disable_channel(mx3_fbi); |
Guennadi Liakhovetski | 86528da | 2009-01-21 10:32:34 -0700 | [diff] [blame] | 734 | |
Guennadi Liakhovetski | 6e1588cb | 2009-02-26 21:34:28 +0100 | [diff] [blame] | 735 | mx3fb_set_fix(fbi); |
Guennadi Liakhovetski | 86528da | 2009-01-21 10:32:34 -0700 | [diff] [blame] | 736 | |
Guennadi Liakhovetski | 6e1588cb | 2009-02-26 21:34:28 +0100 | [diff] [blame] | 737 | mem_len = fbi->var.yres_virtual * fbi->fix.line_length; |
| 738 | if (mem_len > fbi->fix.smem_len) { |
| 739 | if (fbi->fix.smem_start) |
| 740 | mx3fb_unmap_video_memory(fbi); |
Guennadi Liakhovetski | 86528da | 2009-01-21 10:32:34 -0700 | [diff] [blame] | 741 | |
Guennadi Liakhovetski | 20de03d | 2009-08-06 15:07:40 -0700 | [diff] [blame] | 742 | if (mx3fb_map_video_memory(fbi, mem_len, lock) < 0) |
Guennadi Liakhovetski | 6e1588cb | 2009-02-26 21:34:28 +0100 | [diff] [blame] | 743 | return -ENOMEM; |
Guennadi Liakhovetski | 6e1588cb | 2009-02-26 21:34:28 +0100 | [diff] [blame] | 744 | } |
Guennadi Liakhovetski | 86528da | 2009-01-21 10:32:34 -0700 | [diff] [blame] | 745 | |
Guennadi Liakhovetski | 6e1588cb | 2009-02-26 21:34:28 +0100 | [diff] [blame] | 746 | sg_init_table(&sg[0], 1); |
| 747 | sg_init_table(&sg[1], 1); |
Guennadi Liakhovetski | 86528da | 2009-01-21 10:32:34 -0700 | [diff] [blame] | 748 | |
Guennadi Liakhovetski | d88ca815 | 2009-04-06 19:01:05 -0700 | [diff] [blame] | 749 | sg_dma_address(&sg[0]) = fbi->fix.smem_start; |
Guennadi Liakhovetski | 6e1588cb | 2009-02-26 21:34:28 +0100 | [diff] [blame] | 750 | sg_set_page(&sg[0], virt_to_page(fbi->screen_base), |
| 751 | fbi->fix.smem_len, |
| 752 | offset_in_page(fbi->screen_base)); |
Guennadi Liakhovetski | 86528da | 2009-01-21 10:32:34 -0700 | [diff] [blame] | 753 | |
Guennadi Liakhovetski | 6e1588cb | 2009-02-26 21:34:28 +0100 | [diff] [blame] | 754 | if (mx3_fbi->ipu_ch == IDMAC_SDC_0) { |
| 755 | memset(&sig_cfg, 0, sizeof(sig_cfg)); |
| 756 | if (fbi->var.sync & FB_SYNC_HOR_HIGH_ACT) |
| 757 | sig_cfg.Hsync_pol = true; |
| 758 | if (fbi->var.sync & FB_SYNC_VERT_HIGH_ACT) |
| 759 | sig_cfg.Vsync_pol = true; |
| 760 | if (fbi->var.sync & FB_SYNC_CLK_INVERT) |
| 761 | sig_cfg.clk_pol = true; |
| 762 | if (fbi->var.sync & FB_SYNC_DATA_INVERT) |
| 763 | sig_cfg.data_pol = true; |
| 764 | if (fbi->var.sync & FB_SYNC_OE_ACT_HIGH) |
| 765 | sig_cfg.enable_pol = true; |
| 766 | if (fbi->var.sync & FB_SYNC_CLK_IDLE_EN) |
| 767 | sig_cfg.clkidle_en = true; |
| 768 | if (fbi->var.sync & FB_SYNC_CLK_SEL_EN) |
| 769 | sig_cfg.clksel_en = true; |
| 770 | if (fbi->var.sync & FB_SYNC_SHARP_MODE) |
| 771 | mode = IPU_PANEL_SHARP_TFT; |
Guennadi Liakhovetski | 86528da | 2009-01-21 10:32:34 -0700 | [diff] [blame] | 772 | |
Guennadi Liakhovetski | 6e1588cb | 2009-02-26 21:34:28 +0100 | [diff] [blame] | 773 | dev_dbg(fbi->device, "pixclock = %ul Hz\n", |
| 774 | (u32) (PICOS2KHZ(fbi->var.pixclock) * 1000UL)); |
Guennadi Liakhovetski | 86528da | 2009-01-21 10:32:34 -0700 | [diff] [blame] | 775 | |
Guennadi Liakhovetski | 6e1588cb | 2009-02-26 21:34:28 +0100 | [diff] [blame] | 776 | if (sdc_init_panel(mx3fb, mode, |
| 777 | (PICOS2KHZ(fbi->var.pixclock)) * 1000UL, |
| 778 | fbi->var.xres, fbi->var.yres, |
Guennadi Liakhovetski | 6e1588cb | 2009-02-26 21:34:28 +0100 | [diff] [blame] | 779 | fbi->var.left_margin, |
| 780 | fbi->var.hsync_len, |
| 781 | fbi->var.right_margin + |
| 782 | fbi->var.hsync_len, |
| 783 | fbi->var.upper_margin, |
| 784 | fbi->var.vsync_len, |
| 785 | fbi->var.lower_margin + |
| 786 | fbi->var.vsync_len, sig_cfg) != 0) { |
Guennadi Liakhovetski | 6e1588cb | 2009-02-26 21:34:28 +0100 | [diff] [blame] | 787 | dev_err(fbi->device, |
| 788 | "mx3fb: Error initializing panel.\n"); |
| 789 | return -EINVAL; |
| 790 | } |
| 791 | } |
Guennadi Liakhovetski | 86528da | 2009-01-21 10:32:34 -0700 | [diff] [blame] | 792 | |
Guennadi Liakhovetski | 6e1588cb | 2009-02-26 21:34:28 +0100 | [diff] [blame] | 793 | sdc_set_window_pos(mx3fb, mx3_fbi->ipu_ch, 0, 0); |
Guennadi Liakhovetski | 86528da | 2009-01-21 10:32:34 -0700 | [diff] [blame] | 794 | |
Guennadi Liakhovetski | 6e1588cb | 2009-02-26 21:34:28 +0100 | [diff] [blame] | 795 | mx3_fbi->cur_ipu_buf = 0; |
Guennadi Liakhovetski | 86528da | 2009-01-21 10:32:34 -0700 | [diff] [blame] | 796 | |
Guennadi Liakhovetski | 6e1588cb | 2009-02-26 21:34:28 +0100 | [diff] [blame] | 797 | video->out_pixel_fmt = bpp_to_pixfmt(fbi->var.bits_per_pixel); |
| 798 | video->out_width = fbi->var.xres; |
| 799 | video->out_height = fbi->var.yres; |
| 800 | video->out_stride = fbi->var.xres_virtual; |
Guennadi Liakhovetski | 86528da | 2009-01-21 10:32:34 -0700 | [diff] [blame] | 801 | |
Liu Ying | 6cd77e0 | 2012-06-11 09:06:49 +0800 | [diff] [blame] | 802 | if (mx3_fbi->blank == FB_BLANK_UNBLANK) { |
Guennadi Liakhovetski | 6e1588cb | 2009-02-26 21:34:28 +0100 | [diff] [blame] | 803 | sdc_enable_channel(mx3_fbi); |
Liu Ying | 6cd77e0 | 2012-06-11 09:06:49 +0800 | [diff] [blame] | 804 | /* |
| 805 | * sg[0] points to fb smem_start address |
| 806 | * and is actually active in controller. |
| 807 | */ |
| 808 | mx3_fbi->cur_var.xoffset = 0; |
| 809 | mx3_fbi->cur_var.yoffset = 0; |
| 810 | } |
| 811 | |
| 812 | /* |
| 813 | * Preserve xoffset and yoffest in case they are |
| 814 | * inactive in controller as fb is blanked. |
| 815 | */ |
| 816 | cur_xoffset = mx3_fbi->cur_var.xoffset; |
| 817 | cur_yoffset = mx3_fbi->cur_var.yoffset; |
| 818 | mx3_fbi->cur_var = fbi->var; |
| 819 | mx3_fbi->cur_var.xoffset = cur_xoffset; |
| 820 | mx3_fbi->cur_var.yoffset = cur_yoffset; |
Guennadi Liakhovetski | 86528da | 2009-01-21 10:32:34 -0700 | [diff] [blame] | 821 | |
Guennadi Liakhovetski | 20de03d | 2009-08-06 15:07:40 -0700 | [diff] [blame] | 822 | return 0; |
| 823 | } |
| 824 | |
| 825 | /** |
| 826 | * mx3fb_set_par() - set framebuffer parameters and change the operating mode. |
| 827 | * @fbi: framebuffer information pointer. |
| 828 | * @return: 0 on success or negative error code on failure. |
| 829 | */ |
| 830 | static int mx3fb_set_par(struct fb_info *fbi) |
| 831 | { |
| 832 | struct mx3fb_info *mx3_fbi = fbi->par; |
| 833 | struct mx3fb_data *mx3fb = mx3_fbi->mx3fb; |
| 834 | struct idmac_channel *ichan = mx3_fbi->idmac_channel; |
| 835 | int ret; |
| 836 | |
| 837 | dev_dbg(mx3fb->dev, "%s [%c]\n", __func__, list_empty(&ichan->queue) ? '-' : '+'); |
| 838 | |
| 839 | mutex_lock(&mx3_fbi->mutex); |
| 840 | |
Liu Ying | 41a490ec | 2012-06-11 09:06:50 +0800 | [diff] [blame] | 841 | ret = mx3fb_must_set_par(fbi) ? __set_par(fbi, true) : 0; |
Guennadi Liakhovetski | 20de03d | 2009-08-06 15:07:40 -0700 | [diff] [blame] | 842 | |
Guennadi Liakhovetski | 6e1588cb | 2009-02-26 21:34:28 +0100 | [diff] [blame] | 843 | mutex_unlock(&mx3_fbi->mutex); |
Guennadi Liakhovetski | 86528da | 2009-01-21 10:32:34 -0700 | [diff] [blame] | 844 | |
Guennadi Liakhovetski | 20de03d | 2009-08-06 15:07:40 -0700 | [diff] [blame] | 845 | return ret; |
Guennadi Liakhovetski | 86528da | 2009-01-21 10:32:34 -0700 | [diff] [blame] | 846 | } |
| 847 | |
| 848 | /** |
| 849 | * mx3fb_check_var() - check and adjust framebuffer variable parameters. |
Guennadi Liakhovetski | 6e1588cb | 2009-02-26 21:34:28 +0100 | [diff] [blame] | 850 | * @var: framebuffer variable parameters |
| 851 | * @fbi: framebuffer information pointer |
Guennadi Liakhovetski | 86528da | 2009-01-21 10:32:34 -0700 | [diff] [blame] | 852 | */ |
| 853 | static int mx3fb_check_var(struct fb_var_screeninfo *var, struct fb_info *fbi) |
| 854 | { |
Guennadi Liakhovetski | 6e1588cb | 2009-02-26 21:34:28 +0100 | [diff] [blame] | 855 | struct mx3fb_info *mx3_fbi = fbi->par; |
| 856 | u32 vtotal; |
| 857 | u32 htotal; |
Guennadi Liakhovetski | 86528da | 2009-01-21 10:32:34 -0700 | [diff] [blame] | 858 | |
Guennadi Liakhovetski | 6e1588cb | 2009-02-26 21:34:28 +0100 | [diff] [blame] | 859 | dev_dbg(fbi->device, "%s\n", __func__); |
Guennadi Liakhovetski | 86528da | 2009-01-21 10:32:34 -0700 | [diff] [blame] | 860 | |
Guennadi Liakhovetski | 6e1588cb | 2009-02-26 21:34:28 +0100 | [diff] [blame] | 861 | if (var->xres_virtual < var->xres) |
| 862 | var->xres_virtual = var->xres; |
| 863 | if (var->yres_virtual < var->yres) |
| 864 | var->yres_virtual = var->yres; |
Guennadi Liakhovetski | 86528da | 2009-01-21 10:32:34 -0700 | [diff] [blame] | 865 | |
Guennadi Liakhovetski | 6e1588cb | 2009-02-26 21:34:28 +0100 | [diff] [blame] | 866 | if ((var->bits_per_pixel != 32) && (var->bits_per_pixel != 24) && |
| 867 | (var->bits_per_pixel != 16)) |
| 868 | var->bits_per_pixel = default_bpp; |
Guennadi Liakhovetski | 86528da | 2009-01-21 10:32:34 -0700 | [diff] [blame] | 869 | |
Guennadi Liakhovetski | 6e1588cb | 2009-02-26 21:34:28 +0100 | [diff] [blame] | 870 | switch (var->bits_per_pixel) { |
| 871 | case 16: |
| 872 | var->red.length = 5; |
| 873 | var->red.offset = 11; |
| 874 | var->red.msb_right = 0; |
Guennadi Liakhovetski | 86528da | 2009-01-21 10:32:34 -0700 | [diff] [blame] | 875 | |
Guennadi Liakhovetski | 6e1588cb | 2009-02-26 21:34:28 +0100 | [diff] [blame] | 876 | var->green.length = 6; |
| 877 | var->green.offset = 5; |
| 878 | var->green.msb_right = 0; |
Guennadi Liakhovetski | 86528da | 2009-01-21 10:32:34 -0700 | [diff] [blame] | 879 | |
Guennadi Liakhovetski | 6e1588cb | 2009-02-26 21:34:28 +0100 | [diff] [blame] | 880 | var->blue.length = 5; |
| 881 | var->blue.offset = 0; |
| 882 | var->blue.msb_right = 0; |
Guennadi Liakhovetski | 86528da | 2009-01-21 10:32:34 -0700 | [diff] [blame] | 883 | |
Guennadi Liakhovetski | 6e1588cb | 2009-02-26 21:34:28 +0100 | [diff] [blame] | 884 | var->transp.length = 0; |
| 885 | var->transp.offset = 0; |
| 886 | var->transp.msb_right = 0; |
| 887 | break; |
| 888 | case 24: |
| 889 | var->red.length = 8; |
| 890 | var->red.offset = 16; |
| 891 | var->red.msb_right = 0; |
Guennadi Liakhovetski | 86528da | 2009-01-21 10:32:34 -0700 | [diff] [blame] | 892 | |
Guennadi Liakhovetski | 6e1588cb | 2009-02-26 21:34:28 +0100 | [diff] [blame] | 893 | var->green.length = 8; |
| 894 | var->green.offset = 8; |
| 895 | var->green.msb_right = 0; |
Guennadi Liakhovetski | 86528da | 2009-01-21 10:32:34 -0700 | [diff] [blame] | 896 | |
Guennadi Liakhovetski | 6e1588cb | 2009-02-26 21:34:28 +0100 | [diff] [blame] | 897 | var->blue.length = 8; |
| 898 | var->blue.offset = 0; |
| 899 | var->blue.msb_right = 0; |
Guennadi Liakhovetski | 86528da | 2009-01-21 10:32:34 -0700 | [diff] [blame] | 900 | |
Guennadi Liakhovetski | 6e1588cb | 2009-02-26 21:34:28 +0100 | [diff] [blame] | 901 | var->transp.length = 0; |
| 902 | var->transp.offset = 0; |
| 903 | var->transp.msb_right = 0; |
| 904 | break; |
| 905 | case 32: |
| 906 | var->red.length = 8; |
| 907 | var->red.offset = 16; |
| 908 | var->red.msb_right = 0; |
Guennadi Liakhovetski | 86528da | 2009-01-21 10:32:34 -0700 | [diff] [blame] | 909 | |
Guennadi Liakhovetski | 6e1588cb | 2009-02-26 21:34:28 +0100 | [diff] [blame] | 910 | var->green.length = 8; |
| 911 | var->green.offset = 8; |
| 912 | var->green.msb_right = 0; |
Guennadi Liakhovetski | 86528da | 2009-01-21 10:32:34 -0700 | [diff] [blame] | 913 | |
Guennadi Liakhovetski | 6e1588cb | 2009-02-26 21:34:28 +0100 | [diff] [blame] | 914 | var->blue.length = 8; |
| 915 | var->blue.offset = 0; |
| 916 | var->blue.msb_right = 0; |
Guennadi Liakhovetski | 86528da | 2009-01-21 10:32:34 -0700 | [diff] [blame] | 917 | |
Guennadi Liakhovetski | 6e1588cb | 2009-02-26 21:34:28 +0100 | [diff] [blame] | 918 | var->transp.length = 8; |
| 919 | var->transp.offset = 24; |
| 920 | var->transp.msb_right = 0; |
| 921 | break; |
| 922 | } |
Guennadi Liakhovetski | 86528da | 2009-01-21 10:32:34 -0700 | [diff] [blame] | 923 | |
Guennadi Liakhovetski | 6e1588cb | 2009-02-26 21:34:28 +0100 | [diff] [blame] | 924 | if (var->pixclock < 1000) { |
| 925 | htotal = var->xres + var->right_margin + var->hsync_len + |
| 926 | var->left_margin; |
| 927 | vtotal = var->yres + var->lower_margin + var->vsync_len + |
| 928 | var->upper_margin; |
| 929 | var->pixclock = (vtotal * htotal * 6UL) / 100UL; |
| 930 | var->pixclock = KHZ2PICOS(var->pixclock); |
| 931 | dev_dbg(fbi->device, "pixclock set for 60Hz refresh = %u ps\n", |
| 932 | var->pixclock); |
| 933 | } |
Guennadi Liakhovetski | 86528da | 2009-01-21 10:32:34 -0700 | [diff] [blame] | 934 | |
Guennadi Liakhovetski | 6e1588cb | 2009-02-26 21:34:28 +0100 | [diff] [blame] | 935 | var->height = -1; |
| 936 | var->width = -1; |
| 937 | var->grayscale = 0; |
Guennadi Liakhovetski | 86528da | 2009-01-21 10:32:34 -0700 | [diff] [blame] | 938 | |
Guennadi Liakhovetski | 6e1588cb | 2009-02-26 21:34:28 +0100 | [diff] [blame] | 939 | /* Preserve sync flags */ |
Liu Ying | 6cd77e0 | 2012-06-11 09:06:49 +0800 | [diff] [blame] | 940 | var->sync |= mx3_fbi->cur_var.sync; |
| 941 | mx3_fbi->cur_var.sync |= var->sync; |
Guennadi Liakhovetski | 86528da | 2009-01-21 10:32:34 -0700 | [diff] [blame] | 942 | |
Guennadi Liakhovetski | 6e1588cb | 2009-02-26 21:34:28 +0100 | [diff] [blame] | 943 | return 0; |
Guennadi Liakhovetski | 86528da | 2009-01-21 10:32:34 -0700 | [diff] [blame] | 944 | } |
| 945 | |
| 946 | static u32 chan_to_field(unsigned int chan, struct fb_bitfield *bf) |
| 947 | { |
Guennadi Liakhovetski | 6e1588cb | 2009-02-26 21:34:28 +0100 | [diff] [blame] | 948 | chan &= 0xffff; |
| 949 | chan >>= 16 - bf->length; |
| 950 | return chan << bf->offset; |
Guennadi Liakhovetski | 86528da | 2009-01-21 10:32:34 -0700 | [diff] [blame] | 951 | } |
| 952 | |
| 953 | static int mx3fb_setcolreg(unsigned int regno, unsigned int red, |
Guennadi Liakhovetski | 6e1588cb | 2009-02-26 21:34:28 +0100 | [diff] [blame] | 954 | unsigned int green, unsigned int blue, |
| 955 | unsigned int trans, struct fb_info *fbi) |
Guennadi Liakhovetski | 86528da | 2009-01-21 10:32:34 -0700 | [diff] [blame] | 956 | { |
Guennadi Liakhovetski | 6e1588cb | 2009-02-26 21:34:28 +0100 | [diff] [blame] | 957 | struct mx3fb_info *mx3_fbi = fbi->par; |
| 958 | u32 val; |
| 959 | int ret = 1; |
Guennadi Liakhovetski | 86528da | 2009-01-21 10:32:34 -0700 | [diff] [blame] | 960 | |
Guennadi Liakhovetski | d88ca815 | 2009-04-06 19:01:05 -0700 | [diff] [blame] | 961 | dev_dbg(fbi->device, "%s, regno = %u\n", __func__, regno); |
Guennadi Liakhovetski | 86528da | 2009-01-21 10:32:34 -0700 | [diff] [blame] | 962 | |
Guennadi Liakhovetski | 6e1588cb | 2009-02-26 21:34:28 +0100 | [diff] [blame] | 963 | mutex_lock(&mx3_fbi->mutex); |
| 964 | /* |
| 965 | * If greyscale is true, then we convert the RGB value |
| 966 | * to greyscale no matter what visual we are using. |
| 967 | */ |
| 968 | if (fbi->var.grayscale) |
| 969 | red = green = blue = (19595 * red + 38470 * green + |
| 970 | 7471 * blue) >> 16; |
| 971 | switch (fbi->fix.visual) { |
| 972 | case FB_VISUAL_TRUECOLOR: |
| 973 | /* |
| 974 | * 16-bit True Colour. We encode the RGB value |
| 975 | * according to the RGB bitfield information. |
| 976 | */ |
| 977 | if (regno < 16) { |
| 978 | u32 *pal = fbi->pseudo_palette; |
Guennadi Liakhovetski | 86528da | 2009-01-21 10:32:34 -0700 | [diff] [blame] | 979 | |
Guennadi Liakhovetski | 6e1588cb | 2009-02-26 21:34:28 +0100 | [diff] [blame] | 980 | val = chan_to_field(red, &fbi->var.red); |
| 981 | val |= chan_to_field(green, &fbi->var.green); |
| 982 | val |= chan_to_field(blue, &fbi->var.blue); |
Guennadi Liakhovetski | 86528da | 2009-01-21 10:32:34 -0700 | [diff] [blame] | 983 | |
Guennadi Liakhovetski | 6e1588cb | 2009-02-26 21:34:28 +0100 | [diff] [blame] | 984 | pal[regno] = val; |
Guennadi Liakhovetski | 86528da | 2009-01-21 10:32:34 -0700 | [diff] [blame] | 985 | |
Guennadi Liakhovetski | 6e1588cb | 2009-02-26 21:34:28 +0100 | [diff] [blame] | 986 | ret = 0; |
| 987 | } |
| 988 | break; |
Guennadi Liakhovetski | 86528da | 2009-01-21 10:32:34 -0700 | [diff] [blame] | 989 | |
Guennadi Liakhovetski | 6e1588cb | 2009-02-26 21:34:28 +0100 | [diff] [blame] | 990 | case FB_VISUAL_STATIC_PSEUDOCOLOR: |
| 991 | case FB_VISUAL_PSEUDOCOLOR: |
| 992 | break; |
| 993 | } |
| 994 | mutex_unlock(&mx3_fbi->mutex); |
Guennadi Liakhovetski | 86528da | 2009-01-21 10:32:34 -0700 | [diff] [blame] | 995 | |
Guennadi Liakhovetski | 6e1588cb | 2009-02-26 21:34:28 +0100 | [diff] [blame] | 996 | return ret; |
Guennadi Liakhovetski | 86528da | 2009-01-21 10:32:34 -0700 | [diff] [blame] | 997 | } |
| 998 | |
Guennadi Liakhovetski | 20de03d | 2009-08-06 15:07:40 -0700 | [diff] [blame] | 999 | static void __blank(int blank, struct fb_info *fbi) |
Guennadi Liakhovetski | 86528da | 2009-01-21 10:32:34 -0700 | [diff] [blame] | 1000 | { |
Guennadi Liakhovetski | 6e1588cb | 2009-02-26 21:34:28 +0100 | [diff] [blame] | 1001 | struct mx3fb_info *mx3_fbi = fbi->par; |
| 1002 | struct mx3fb_data *mx3fb = mx3_fbi->mx3fb; |
Wolfram Stering | 8b53b7f | 2011-09-23 14:09:35 +0200 | [diff] [blame] | 1003 | int was_blank = mx3_fbi->blank; |
Guennadi Liakhovetski | 86528da | 2009-01-21 10:32:34 -0700 | [diff] [blame] | 1004 | |
Guennadi Liakhovetski | 6e1588cb | 2009-02-26 21:34:28 +0100 | [diff] [blame] | 1005 | mx3_fbi->blank = blank; |
Guennadi Liakhovetski | 86528da | 2009-01-21 10:32:34 -0700 | [diff] [blame] | 1006 | |
Wolfram Stering | 8b53b7f | 2011-09-23 14:09:35 +0200 | [diff] [blame] | 1007 | /* Attention! |
| 1008 | * Do not call sdc_disable_channel() for a channel that is disabled |
| 1009 | * already! This will result in a kernel NULL pointer dereference |
| 1010 | * (mx3_fbi->txd is NULL). Hide the fact, that all blank modes are |
| 1011 | * handled equally by this driver. |
| 1012 | */ |
| 1013 | if (blank > FB_BLANK_UNBLANK && was_blank > FB_BLANK_UNBLANK) |
| 1014 | return; |
| 1015 | |
Guennadi Liakhovetski | 6e1588cb | 2009-02-26 21:34:28 +0100 | [diff] [blame] | 1016 | switch (blank) { |
| 1017 | case FB_BLANK_POWERDOWN: |
| 1018 | case FB_BLANK_VSYNC_SUSPEND: |
| 1019 | case FB_BLANK_HSYNC_SUSPEND: |
| 1020 | case FB_BLANK_NORMAL: |
Guennadi Liakhovetski | 6e1588cb | 2009-02-26 21:34:28 +0100 | [diff] [blame] | 1021 | sdc_set_brightness(mx3fb, 0); |
Guennadi Liakhovetski | d88ca815 | 2009-04-06 19:01:05 -0700 | [diff] [blame] | 1022 | memset((char *)fbi->screen_base, 0, fbi->fix.smem_len); |
| 1023 | /* Give LCD time to update - enough for 50 and 60 Hz */ |
| 1024 | msleep(25); |
| 1025 | sdc_disable_channel(mx3_fbi); |
Guennadi Liakhovetski | 6e1588cb | 2009-02-26 21:34:28 +0100 | [diff] [blame] | 1026 | break; |
| 1027 | case FB_BLANK_UNBLANK: |
| 1028 | sdc_enable_channel(mx3_fbi); |
| 1029 | sdc_set_brightness(mx3fb, mx3fb->backlight_level); |
| 1030 | break; |
| 1031 | } |
Guennadi Liakhovetski | 20de03d | 2009-08-06 15:07:40 -0700 | [diff] [blame] | 1032 | } |
| 1033 | |
| 1034 | /** |
| 1035 | * mx3fb_blank() - blank the display. |
| 1036 | */ |
| 1037 | static int mx3fb_blank(int blank, struct fb_info *fbi) |
| 1038 | { |
| 1039 | struct mx3fb_info *mx3_fbi = fbi->par; |
| 1040 | |
| 1041 | dev_dbg(fbi->device, "%s, blank = %d, base %p, len %u\n", __func__, |
| 1042 | blank, fbi->screen_base, fbi->fix.smem_len); |
| 1043 | |
| 1044 | if (mx3_fbi->blank == blank) |
| 1045 | return 0; |
| 1046 | |
| 1047 | mutex_lock(&mx3_fbi->mutex); |
| 1048 | __blank(blank, fbi); |
Guennadi Liakhovetski | 6e1588cb | 2009-02-26 21:34:28 +0100 | [diff] [blame] | 1049 | mutex_unlock(&mx3_fbi->mutex); |
Guennadi Liakhovetski | 86528da | 2009-01-21 10:32:34 -0700 | [diff] [blame] | 1050 | |
Guennadi Liakhovetski | 6e1588cb | 2009-02-26 21:34:28 +0100 | [diff] [blame] | 1051 | return 0; |
Guennadi Liakhovetski | 86528da | 2009-01-21 10:32:34 -0700 | [diff] [blame] | 1052 | } |
| 1053 | |
| 1054 | /** |
| 1055 | * mx3fb_pan_display() - pan or wrap the display |
Guennadi Liakhovetski | 6e1588cb | 2009-02-26 21:34:28 +0100 | [diff] [blame] | 1056 | * @var: variable screen buffer information. |
| 1057 | * @info: framebuffer information pointer. |
Guennadi Liakhovetski | 86528da | 2009-01-21 10:32:34 -0700 | [diff] [blame] | 1058 | * |
| 1059 | * We look only at xoffset, yoffset and the FB_VMODE_YWRAP flag |
| 1060 | */ |
| 1061 | static int mx3fb_pan_display(struct fb_var_screeninfo *var, |
Guennadi Liakhovetski | 6e1588cb | 2009-02-26 21:34:28 +0100 | [diff] [blame] | 1062 | struct fb_info *fbi) |
Guennadi Liakhovetski | 86528da | 2009-01-21 10:32:34 -0700 | [diff] [blame] | 1063 | { |
Guennadi Liakhovetski | 6e1588cb | 2009-02-26 21:34:28 +0100 | [diff] [blame] | 1064 | struct mx3fb_info *mx3_fbi = fbi->par; |
| 1065 | u32 y_bottom; |
| 1066 | unsigned long base; |
| 1067 | off_t offset; |
| 1068 | dma_cookie_t cookie; |
| 1069 | struct scatterlist *sg = mx3_fbi->sg; |
| 1070 | struct dma_chan *dma_chan = &mx3_fbi->idmac_channel->dma_chan; |
| 1071 | struct dma_async_tx_descriptor *txd; |
| 1072 | int ret; |
Guennadi Liakhovetski | 86528da | 2009-01-21 10:32:34 -0700 | [diff] [blame] | 1073 | |
Guennadi Liakhovetski | 6e1588cb | 2009-02-26 21:34:28 +0100 | [diff] [blame] | 1074 | dev_dbg(fbi->device, "%s [%c]\n", __func__, |
| 1075 | list_empty(&mx3_fbi->idmac_channel->queue) ? '-' : '+'); |
Guennadi Liakhovetski | 86528da | 2009-01-21 10:32:34 -0700 | [diff] [blame] | 1076 | |
Guennadi Liakhovetski | 6e1588cb | 2009-02-26 21:34:28 +0100 | [diff] [blame] | 1077 | if (var->xoffset > 0) { |
| 1078 | dev_dbg(fbi->device, "x panning not supported\n"); |
| 1079 | return -EINVAL; |
| 1080 | } |
Guennadi Liakhovetski | 86528da | 2009-01-21 10:32:34 -0700 | [diff] [blame] | 1081 | |
Liu Ying | 6cd77e0 | 2012-06-11 09:06:49 +0800 | [diff] [blame] | 1082 | if (mx3_fbi->cur_var.xoffset == var->xoffset && |
| 1083 | mx3_fbi->cur_var.yoffset == var->yoffset) |
Guennadi Liakhovetski | 6e1588cb | 2009-02-26 21:34:28 +0100 | [diff] [blame] | 1084 | return 0; /* No change, do nothing */ |
Guennadi Liakhovetski | 86528da | 2009-01-21 10:32:34 -0700 | [diff] [blame] | 1085 | |
Guennadi Liakhovetski | 6e1588cb | 2009-02-26 21:34:28 +0100 | [diff] [blame] | 1086 | y_bottom = var->yoffset; |
Guennadi Liakhovetski | 86528da | 2009-01-21 10:32:34 -0700 | [diff] [blame] | 1087 | |
Guennadi Liakhovetski | 6e1588cb | 2009-02-26 21:34:28 +0100 | [diff] [blame] | 1088 | if (!(var->vmode & FB_VMODE_YWRAP)) |
Laurent Pinchart | 9f1b3eb | 2011-05-25 11:34:52 +0200 | [diff] [blame] | 1089 | y_bottom += fbi->var.yres; |
Guennadi Liakhovetski | 86528da | 2009-01-21 10:32:34 -0700 | [diff] [blame] | 1090 | |
Guennadi Liakhovetski | 6e1588cb | 2009-02-26 21:34:28 +0100 | [diff] [blame] | 1091 | if (y_bottom > fbi->var.yres_virtual) |
| 1092 | return -EINVAL; |
Guennadi Liakhovetski | 86528da | 2009-01-21 10:32:34 -0700 | [diff] [blame] | 1093 | |
Guennadi Liakhovetski | 6e1588cb | 2009-02-26 21:34:28 +0100 | [diff] [blame] | 1094 | mutex_lock(&mx3_fbi->mutex); |
Guennadi Liakhovetski | 86528da | 2009-01-21 10:32:34 -0700 | [diff] [blame] | 1095 | |
Laurent Pinchart | 9f1b3eb | 2011-05-25 11:34:52 +0200 | [diff] [blame] | 1096 | offset = var->yoffset * fbi->fix.line_length |
| 1097 | + var->xoffset * (fbi->var.bits_per_pixel / 8); |
Guennadi Liakhovetski | 6e1588cb | 2009-02-26 21:34:28 +0100 | [diff] [blame] | 1098 | base = fbi->fix.smem_start + offset; |
Guennadi Liakhovetski | 86528da | 2009-01-21 10:32:34 -0700 | [diff] [blame] | 1099 | |
Guennadi Liakhovetski | 6e1588cb | 2009-02-26 21:34:28 +0100 | [diff] [blame] | 1100 | dev_dbg(fbi->device, "Updating SDC BG buf %d address=0x%08lX\n", |
| 1101 | mx3_fbi->cur_ipu_buf, base); |
Guennadi Liakhovetski | 86528da | 2009-01-21 10:32:34 -0700 | [diff] [blame] | 1102 | |
Guennadi Liakhovetski | 6e1588cb | 2009-02-26 21:34:28 +0100 | [diff] [blame] | 1103 | /* |
| 1104 | * We enable the End of Frame interrupt, which will free a tx-descriptor, |
| 1105 | * which we will need for the next device_prep_slave_sg(). The |
| 1106 | * IRQ-handler will disable the IRQ again. |
| 1107 | */ |
| 1108 | init_completion(&mx3_fbi->flip_cmpl); |
| 1109 | enable_irq(mx3_fbi->idmac_channel->eof_irq); |
Guennadi Liakhovetski | 86528da | 2009-01-21 10:32:34 -0700 | [diff] [blame] | 1110 | |
Guennadi Liakhovetski | 6e1588cb | 2009-02-26 21:34:28 +0100 | [diff] [blame] | 1111 | ret = wait_for_completion_timeout(&mx3_fbi->flip_cmpl, HZ / 10); |
| 1112 | if (ret <= 0) { |
| 1113 | mutex_unlock(&mx3_fbi->mutex); |
| 1114 | dev_info(fbi->device, "Panning failed due to %s\n", ret < 0 ? |
| 1115 | "user interrupt" : "timeout"); |
Guennadi Liakhovetski | d88ca815 | 2009-04-06 19:01:05 -0700 | [diff] [blame] | 1116 | disable_irq(mx3_fbi->idmac_channel->eof_irq); |
Guennadi Liakhovetski | 6e1588cb | 2009-02-26 21:34:28 +0100 | [diff] [blame] | 1117 | return ret ? : -ETIMEDOUT; |
| 1118 | } |
Guennadi Liakhovetski | 86528da | 2009-01-21 10:32:34 -0700 | [diff] [blame] | 1119 | |
Guennadi Liakhovetski | 6e1588cb | 2009-02-26 21:34:28 +0100 | [diff] [blame] | 1120 | mx3_fbi->cur_ipu_buf = !mx3_fbi->cur_ipu_buf; |
Guennadi Liakhovetski | 86528da | 2009-01-21 10:32:34 -0700 | [diff] [blame] | 1121 | |
Guennadi Liakhovetski | 6e1588cb | 2009-02-26 21:34:28 +0100 | [diff] [blame] | 1122 | sg_dma_address(&sg[mx3_fbi->cur_ipu_buf]) = base; |
| 1123 | sg_set_page(&sg[mx3_fbi->cur_ipu_buf], |
| 1124 | virt_to_page(fbi->screen_base + offset), fbi->fix.smem_len, |
| 1125 | offset_in_page(fbi->screen_base + offset)); |
Guennadi Liakhovetski | 86528da | 2009-01-21 10:32:34 -0700 | [diff] [blame] | 1126 | |
Guennadi Liakhovetski | d88ca815 | 2009-04-06 19:01:05 -0700 | [diff] [blame] | 1127 | if (mx3_fbi->txd) |
| 1128 | async_tx_ack(mx3_fbi->txd); |
| 1129 | |
Alexandre Bounine | 1605282 | 2012-03-08 16:11:18 -0500 | [diff] [blame] | 1130 | txd = dmaengine_prep_slave_sg(dma_chan, sg + |
Vinod Koul | 1003cab | 2011-10-14 10:39:23 +0530 | [diff] [blame] | 1131 | mx3_fbi->cur_ipu_buf, 1, DMA_MEM_TO_DEV, DMA_PREP_INTERRUPT); |
Guennadi Liakhovetski | 6e1588cb | 2009-02-26 21:34:28 +0100 | [diff] [blame] | 1132 | if (!txd) { |
| 1133 | dev_err(fbi->device, |
| 1134 | "Error preparing a DMA transaction descriptor.\n"); |
| 1135 | mutex_unlock(&mx3_fbi->mutex); |
| 1136 | return -EIO; |
| 1137 | } |
Guennadi Liakhovetski | 86528da | 2009-01-21 10:32:34 -0700 | [diff] [blame] | 1138 | |
Guennadi Liakhovetski | 6e1588cb | 2009-02-26 21:34:28 +0100 | [diff] [blame] | 1139 | txd->callback_param = txd; |
| 1140 | txd->callback = mx3fb_dma_done; |
Guennadi Liakhovetski | 86528da | 2009-01-21 10:32:34 -0700 | [diff] [blame] | 1141 | |
Guennadi Liakhovetski | 6e1588cb | 2009-02-26 21:34:28 +0100 | [diff] [blame] | 1142 | /* |
| 1143 | * Emulate original mx3fb behaviour: each new call to idmac_tx_submit() |
| 1144 | * should switch to another buffer |
| 1145 | */ |
| 1146 | cookie = txd->tx_submit(txd); |
| 1147 | dev_dbg(fbi->device, "%d: Submit %p #%d\n", __LINE__, txd, cookie); |
| 1148 | if (cookie < 0) { |
| 1149 | dev_err(fbi->device, |
| 1150 | "Error updating SDC buf %d to address=0x%08lX\n", |
| 1151 | mx3_fbi->cur_ipu_buf, base); |
| 1152 | mutex_unlock(&mx3_fbi->mutex); |
| 1153 | return -EIO; |
| 1154 | } |
Guennadi Liakhovetski | 86528da | 2009-01-21 10:32:34 -0700 | [diff] [blame] | 1155 | |
Guennadi Liakhovetski | 6e1588cb | 2009-02-26 21:34:28 +0100 | [diff] [blame] | 1156 | mx3_fbi->txd = txd; |
Guennadi Liakhovetski | 86528da | 2009-01-21 10:32:34 -0700 | [diff] [blame] | 1157 | |
Guennadi Liakhovetski | 6e1588cb | 2009-02-26 21:34:28 +0100 | [diff] [blame] | 1158 | fbi->var.xoffset = var->xoffset; |
| 1159 | fbi->var.yoffset = var->yoffset; |
Guennadi Liakhovetski | 86528da | 2009-01-21 10:32:34 -0700 | [diff] [blame] | 1160 | |
Guennadi Liakhovetski | 6e1588cb | 2009-02-26 21:34:28 +0100 | [diff] [blame] | 1161 | if (var->vmode & FB_VMODE_YWRAP) |
| 1162 | fbi->var.vmode |= FB_VMODE_YWRAP; |
| 1163 | else |
| 1164 | fbi->var.vmode &= ~FB_VMODE_YWRAP; |
Guennadi Liakhovetski | 86528da | 2009-01-21 10:32:34 -0700 | [diff] [blame] | 1165 | |
Liu Ying | 6cd77e0 | 2012-06-11 09:06:49 +0800 | [diff] [blame] | 1166 | mx3_fbi->cur_var = fbi->var; |
| 1167 | |
Guennadi Liakhovetski | 6e1588cb | 2009-02-26 21:34:28 +0100 | [diff] [blame] | 1168 | mutex_unlock(&mx3_fbi->mutex); |
Guennadi Liakhovetski | 86528da | 2009-01-21 10:32:34 -0700 | [diff] [blame] | 1169 | |
Guennadi Liakhovetski | 6e1588cb | 2009-02-26 21:34:28 +0100 | [diff] [blame] | 1170 | dev_dbg(fbi->device, "Update complete\n"); |
Guennadi Liakhovetski | 86528da | 2009-01-21 10:32:34 -0700 | [diff] [blame] | 1171 | |
Guennadi Liakhovetski | 6e1588cb | 2009-02-26 21:34:28 +0100 | [diff] [blame] | 1172 | return 0; |
Guennadi Liakhovetski | 86528da | 2009-01-21 10:32:34 -0700 | [diff] [blame] | 1173 | } |
| 1174 | |
| 1175 | /* |
| 1176 | * This structure contains the pointers to the control functions that are |
| 1177 | * invoked by the core framebuffer driver to perform operations like |
| 1178 | * blitting, rectangle filling, copy regions and cursor definition. |
| 1179 | */ |
| 1180 | static struct fb_ops mx3fb_ops = { |
Guennadi Liakhovetski | 6e1588cb | 2009-02-26 21:34:28 +0100 | [diff] [blame] | 1181 | .owner = THIS_MODULE, |
| 1182 | .fb_set_par = mx3fb_set_par, |
| 1183 | .fb_check_var = mx3fb_check_var, |
| 1184 | .fb_setcolreg = mx3fb_setcolreg, |
| 1185 | .fb_pan_display = mx3fb_pan_display, |
| 1186 | .fb_fillrect = cfb_fillrect, |
| 1187 | .fb_copyarea = cfb_copyarea, |
| 1188 | .fb_imageblit = cfb_imageblit, |
| 1189 | .fb_blank = mx3fb_blank, |
Guennadi Liakhovetski | 86528da | 2009-01-21 10:32:34 -0700 | [diff] [blame] | 1190 | }; |
| 1191 | |
| 1192 | #ifdef CONFIG_PM |
| 1193 | /* |
| 1194 | * Power management hooks. Note that we won't be called from IRQ context, |
| 1195 | * unlike the blank functions above, so we may sleep. |
| 1196 | */ |
| 1197 | |
| 1198 | /* |
| 1199 | * Suspends the framebuffer and blanks the screen. Power management support |
| 1200 | */ |
| 1201 | static int mx3fb_suspend(struct platform_device *pdev, pm_message_t state) |
| 1202 | { |
Sascha Hauer | b09de42 | 2009-04-08 11:45:47 +0200 | [diff] [blame] | 1203 | struct mx3fb_data *mx3fb = platform_get_drvdata(pdev); |
| 1204 | struct mx3fb_info *mx3_fbi = mx3fb->fbi->par; |
Guennadi Liakhovetski | 86528da | 2009-01-21 10:32:34 -0700 | [diff] [blame] | 1205 | |
Torben Hohn | ac751ef | 2011-01-25 15:07:35 -0800 | [diff] [blame] | 1206 | console_lock(); |
Sascha Hauer | b09de42 | 2009-04-08 11:45:47 +0200 | [diff] [blame] | 1207 | fb_set_suspend(mx3fb->fbi, 1); |
Torben Hohn | ac751ef | 2011-01-25 15:07:35 -0800 | [diff] [blame] | 1208 | console_unlock(); |
Guennadi Liakhovetski | 86528da | 2009-01-21 10:32:34 -0700 | [diff] [blame] | 1209 | |
Guennadi Liakhovetski | 6e1588cb | 2009-02-26 21:34:28 +0100 | [diff] [blame] | 1210 | if (mx3_fbi->blank == FB_BLANK_UNBLANK) { |
| 1211 | sdc_disable_channel(mx3_fbi); |
| 1212 | sdc_set_brightness(mx3fb, 0); |
Guennadi Liakhovetski | 86528da | 2009-01-21 10:32:34 -0700 | [diff] [blame] | 1213 | |
Guennadi Liakhovetski | 6e1588cb | 2009-02-26 21:34:28 +0100 | [diff] [blame] | 1214 | } |
| 1215 | return 0; |
Guennadi Liakhovetski | 86528da | 2009-01-21 10:32:34 -0700 | [diff] [blame] | 1216 | } |
| 1217 | |
| 1218 | /* |
| 1219 | * Resumes the framebuffer and unblanks the screen. Power management support |
| 1220 | */ |
| 1221 | static int mx3fb_resume(struct platform_device *pdev) |
| 1222 | { |
Sascha Hauer | b09de42 | 2009-04-08 11:45:47 +0200 | [diff] [blame] | 1223 | struct mx3fb_data *mx3fb = platform_get_drvdata(pdev); |
| 1224 | struct mx3fb_info *mx3_fbi = mx3fb->fbi->par; |
Guennadi Liakhovetski | 86528da | 2009-01-21 10:32:34 -0700 | [diff] [blame] | 1225 | |
Guennadi Liakhovetski | 6e1588cb | 2009-02-26 21:34:28 +0100 | [diff] [blame] | 1226 | if (mx3_fbi->blank == FB_BLANK_UNBLANK) { |
| 1227 | sdc_enable_channel(mx3_fbi); |
Sascha Hauer | b09de42 | 2009-04-08 11:45:47 +0200 | [diff] [blame] | 1228 | sdc_set_brightness(mx3fb, mx3fb->backlight_level); |
Guennadi Liakhovetski | 6e1588cb | 2009-02-26 21:34:28 +0100 | [diff] [blame] | 1229 | } |
Guennadi Liakhovetski | 86528da | 2009-01-21 10:32:34 -0700 | [diff] [blame] | 1230 | |
Torben Hohn | ac751ef | 2011-01-25 15:07:35 -0800 | [diff] [blame] | 1231 | console_lock(); |
Sascha Hauer | b09de42 | 2009-04-08 11:45:47 +0200 | [diff] [blame] | 1232 | fb_set_suspend(mx3fb->fbi, 0); |
Torben Hohn | ac751ef | 2011-01-25 15:07:35 -0800 | [diff] [blame] | 1233 | console_unlock(); |
Guennadi Liakhovetski | 86528da | 2009-01-21 10:32:34 -0700 | [diff] [blame] | 1234 | |
Guennadi Liakhovetski | 6e1588cb | 2009-02-26 21:34:28 +0100 | [diff] [blame] | 1235 | return 0; |
Guennadi Liakhovetski | 86528da | 2009-01-21 10:32:34 -0700 | [diff] [blame] | 1236 | } |
| 1237 | #else |
| 1238 | #define mx3fb_suspend NULL |
| 1239 | #define mx3fb_resume NULL |
| 1240 | #endif |
| 1241 | |
| 1242 | /* |
| 1243 | * Main framebuffer functions |
| 1244 | */ |
| 1245 | |
| 1246 | /** |
| 1247 | * mx3fb_map_video_memory() - allocates the DRAM memory for the frame buffer. |
Guennadi Liakhovetski | 6e1588cb | 2009-02-26 21:34:28 +0100 | [diff] [blame] | 1248 | * @fbi: framebuffer information pointer |
Krzysztof Helt | 537a1bf | 2009-06-30 11:41:29 -0700 | [diff] [blame] | 1249 | * @mem_len: length of mapped memory |
Guennadi Liakhovetski | 20de03d | 2009-08-06 15:07:40 -0700 | [diff] [blame] | 1250 | * @lock: do not lock during initialisation |
Guennadi Liakhovetski | 6e1588cb | 2009-02-26 21:34:28 +0100 | [diff] [blame] | 1251 | * @return: Error code indicating success or failure |
Guennadi Liakhovetski | 86528da | 2009-01-21 10:32:34 -0700 | [diff] [blame] | 1252 | * |
| 1253 | * This buffer is remapped into a non-cached, non-buffered, memory region to |
| 1254 | * allow palette and pixel writes to occur without flushing the cache. Once this |
| 1255 | * area is remapped, all virtual memory access to the video memory should occur |
| 1256 | * at the new region. |
| 1257 | */ |
Guennadi Liakhovetski | 20de03d | 2009-08-06 15:07:40 -0700 | [diff] [blame] | 1258 | static int mx3fb_map_video_memory(struct fb_info *fbi, unsigned int mem_len, |
| 1259 | bool lock) |
Guennadi Liakhovetski | 86528da | 2009-01-21 10:32:34 -0700 | [diff] [blame] | 1260 | { |
Guennadi Liakhovetski | 6e1588cb | 2009-02-26 21:34:28 +0100 | [diff] [blame] | 1261 | int retval = 0; |
| 1262 | dma_addr_t addr; |
Guennadi Liakhovetski | 86528da | 2009-01-21 10:32:34 -0700 | [diff] [blame] | 1263 | |
Guennadi Liakhovetski | 6e1588cb | 2009-02-26 21:34:28 +0100 | [diff] [blame] | 1264 | fbi->screen_base = dma_alloc_writecombine(fbi->device, |
Krzysztof Helt | 537a1bf | 2009-06-30 11:41:29 -0700 | [diff] [blame] | 1265 | mem_len, |
Sascha Hauer | 4d32d04 | 2013-12-19 09:23:08 +0100 | [diff] [blame] | 1266 | &addr, GFP_DMA | GFP_KERNEL); |
Guennadi Liakhovetski | 86528da | 2009-01-21 10:32:34 -0700 | [diff] [blame] | 1267 | |
Guennadi Liakhovetski | 6e1588cb | 2009-02-26 21:34:28 +0100 | [diff] [blame] | 1268 | if (!fbi->screen_base) { |
| 1269 | dev_err(fbi->device, "Cannot allocate %u bytes framebuffer memory\n", |
Krzysztof Helt | 537a1bf | 2009-06-30 11:41:29 -0700 | [diff] [blame] | 1270 | mem_len); |
Guennadi Liakhovetski | 6e1588cb | 2009-02-26 21:34:28 +0100 | [diff] [blame] | 1271 | retval = -EBUSY; |
| 1272 | goto err0; |
| 1273 | } |
Guennadi Liakhovetski | 86528da | 2009-01-21 10:32:34 -0700 | [diff] [blame] | 1274 | |
Guennadi Liakhovetski | 20de03d | 2009-08-06 15:07:40 -0700 | [diff] [blame] | 1275 | if (lock) |
| 1276 | mutex_lock(&fbi->mm_lock); |
Guennadi Liakhovetski | 6e1588cb | 2009-02-26 21:34:28 +0100 | [diff] [blame] | 1277 | fbi->fix.smem_start = addr; |
Krzysztof Helt | 537a1bf | 2009-06-30 11:41:29 -0700 | [diff] [blame] | 1278 | fbi->fix.smem_len = mem_len; |
Guennadi Liakhovetski | 20de03d | 2009-08-06 15:07:40 -0700 | [diff] [blame] | 1279 | if (lock) |
| 1280 | mutex_unlock(&fbi->mm_lock); |
Guennadi Liakhovetski | 86528da | 2009-01-21 10:32:34 -0700 | [diff] [blame] | 1281 | |
Guennadi Liakhovetski | 6e1588cb | 2009-02-26 21:34:28 +0100 | [diff] [blame] | 1282 | dev_dbg(fbi->device, "allocated fb @ p=0x%08x, v=0x%p, size=%d.\n", |
| 1283 | (uint32_t) fbi->fix.smem_start, fbi->screen_base, fbi->fix.smem_len); |
Guennadi Liakhovetski | 86528da | 2009-01-21 10:32:34 -0700 | [diff] [blame] | 1284 | |
Guennadi Liakhovetski | 6e1588cb | 2009-02-26 21:34:28 +0100 | [diff] [blame] | 1285 | fbi->screen_size = fbi->fix.smem_len; |
Guennadi Liakhovetski | 86528da | 2009-01-21 10:32:34 -0700 | [diff] [blame] | 1286 | |
Guennadi Liakhovetski | 6e1588cb | 2009-02-26 21:34:28 +0100 | [diff] [blame] | 1287 | /* Clear the screen */ |
| 1288 | memset((char *)fbi->screen_base, 0, fbi->fix.smem_len); |
Guennadi Liakhovetski | 86528da | 2009-01-21 10:32:34 -0700 | [diff] [blame] | 1289 | |
Guennadi Liakhovetski | 6e1588cb | 2009-02-26 21:34:28 +0100 | [diff] [blame] | 1290 | return 0; |
Guennadi Liakhovetski | 86528da | 2009-01-21 10:32:34 -0700 | [diff] [blame] | 1291 | |
| 1292 | err0: |
Guennadi Liakhovetski | 6e1588cb | 2009-02-26 21:34:28 +0100 | [diff] [blame] | 1293 | fbi->fix.smem_len = 0; |
| 1294 | fbi->fix.smem_start = 0; |
| 1295 | fbi->screen_base = NULL; |
| 1296 | return retval; |
Guennadi Liakhovetski | 86528da | 2009-01-21 10:32:34 -0700 | [diff] [blame] | 1297 | } |
| 1298 | |
| 1299 | /** |
| 1300 | * mx3fb_unmap_video_memory() - de-allocate frame buffer memory. |
Guennadi Liakhovetski | 6e1588cb | 2009-02-26 21:34:28 +0100 | [diff] [blame] | 1301 | * @fbi: framebuffer information pointer |
| 1302 | * @return: error code indicating success or failure |
Guennadi Liakhovetski | 86528da | 2009-01-21 10:32:34 -0700 | [diff] [blame] | 1303 | */ |
| 1304 | static int mx3fb_unmap_video_memory(struct fb_info *fbi) |
| 1305 | { |
Guennadi Liakhovetski | 6e1588cb | 2009-02-26 21:34:28 +0100 | [diff] [blame] | 1306 | dma_free_writecombine(fbi->device, fbi->fix.smem_len, |
| 1307 | fbi->screen_base, fbi->fix.smem_start); |
Guennadi Liakhovetski | 86528da | 2009-01-21 10:32:34 -0700 | [diff] [blame] | 1308 | |
Fabio Estevam | f3d8496 | 2013-02-21 16:42:39 -0800 | [diff] [blame] | 1309 | fbi->screen_base = NULL; |
Krzysztof Helt | 537a1bf | 2009-06-30 11:41:29 -0700 | [diff] [blame] | 1310 | mutex_lock(&fbi->mm_lock); |
Guennadi Liakhovetski | 6e1588cb | 2009-02-26 21:34:28 +0100 | [diff] [blame] | 1311 | fbi->fix.smem_start = 0; |
| 1312 | fbi->fix.smem_len = 0; |
Krzysztof Helt | 537a1bf | 2009-06-30 11:41:29 -0700 | [diff] [blame] | 1313 | mutex_unlock(&fbi->mm_lock); |
Guennadi Liakhovetski | 6e1588cb | 2009-02-26 21:34:28 +0100 | [diff] [blame] | 1314 | return 0; |
Guennadi Liakhovetski | 86528da | 2009-01-21 10:32:34 -0700 | [diff] [blame] | 1315 | } |
| 1316 | |
| 1317 | /** |
| 1318 | * mx3fb_init_fbinfo() - initialize framebuffer information object. |
Guennadi Liakhovetski | 6e1588cb | 2009-02-26 21:34:28 +0100 | [diff] [blame] | 1319 | * @return: initialized framebuffer structure. |
Guennadi Liakhovetski | 86528da | 2009-01-21 10:32:34 -0700 | [diff] [blame] | 1320 | */ |
| 1321 | static struct fb_info *mx3fb_init_fbinfo(struct device *dev, struct fb_ops *ops) |
| 1322 | { |
Guennadi Liakhovetski | 6e1588cb | 2009-02-26 21:34:28 +0100 | [diff] [blame] | 1323 | struct fb_info *fbi; |
| 1324 | struct mx3fb_info *mx3fbi; |
| 1325 | int ret; |
Guennadi Liakhovetski | 86528da | 2009-01-21 10:32:34 -0700 | [diff] [blame] | 1326 | |
Guennadi Liakhovetski | 6e1588cb | 2009-02-26 21:34:28 +0100 | [diff] [blame] | 1327 | /* Allocate sufficient memory for the fb structure */ |
| 1328 | fbi = framebuffer_alloc(sizeof(struct mx3fb_info), dev); |
| 1329 | if (!fbi) |
| 1330 | return NULL; |
Guennadi Liakhovetski | 86528da | 2009-01-21 10:32:34 -0700 | [diff] [blame] | 1331 | |
Guennadi Liakhovetski | 6e1588cb | 2009-02-26 21:34:28 +0100 | [diff] [blame] | 1332 | mx3fbi = fbi->par; |
| 1333 | mx3fbi->cookie = -EINVAL; |
| 1334 | mx3fbi->cur_ipu_buf = 0; |
Guennadi Liakhovetski | 86528da | 2009-01-21 10:32:34 -0700 | [diff] [blame] | 1335 | |
Guennadi Liakhovetski | 6e1588cb | 2009-02-26 21:34:28 +0100 | [diff] [blame] | 1336 | fbi->var.activate = FB_ACTIVATE_NOW; |
Guennadi Liakhovetski | 86528da | 2009-01-21 10:32:34 -0700 | [diff] [blame] | 1337 | |
Guennadi Liakhovetski | 6e1588cb | 2009-02-26 21:34:28 +0100 | [diff] [blame] | 1338 | fbi->fbops = ops; |
| 1339 | fbi->flags = FBINFO_FLAG_DEFAULT; |
| 1340 | fbi->pseudo_palette = mx3fbi->pseudo_palette; |
Guennadi Liakhovetski | 86528da | 2009-01-21 10:32:34 -0700 | [diff] [blame] | 1341 | |
Guennadi Liakhovetski | 6e1588cb | 2009-02-26 21:34:28 +0100 | [diff] [blame] | 1342 | mutex_init(&mx3fbi->mutex); |
Guennadi Liakhovetski | 86528da | 2009-01-21 10:32:34 -0700 | [diff] [blame] | 1343 | |
Guennadi Liakhovetski | 6e1588cb | 2009-02-26 21:34:28 +0100 | [diff] [blame] | 1344 | /* Allocate colormap */ |
| 1345 | ret = fb_alloc_cmap(&fbi->cmap, 16, 0); |
| 1346 | if (ret < 0) { |
| 1347 | framebuffer_release(fbi); |
| 1348 | return NULL; |
| 1349 | } |
Guennadi Liakhovetski | 86528da | 2009-01-21 10:32:34 -0700 | [diff] [blame] | 1350 | |
Guennadi Liakhovetski | 6e1588cb | 2009-02-26 21:34:28 +0100 | [diff] [blame] | 1351 | return fbi; |
Guennadi Liakhovetski | 86528da | 2009-01-21 10:32:34 -0700 | [diff] [blame] | 1352 | } |
| 1353 | |
| 1354 | static int init_fb_chan(struct mx3fb_data *mx3fb, struct idmac_channel *ichan) |
| 1355 | { |
Guennadi Liakhovetski | 6e1588cb | 2009-02-26 21:34:28 +0100 | [diff] [blame] | 1356 | struct device *dev = mx3fb->dev; |
Jingoo Han | 521fdb7 | 2013-09-17 13:57:22 +0900 | [diff] [blame] | 1357 | struct mx3fb_platform_data *mx3fb_pdata = dev_get_platdata(dev); |
Guennadi Liakhovetski | 6e1588cb | 2009-02-26 21:34:28 +0100 | [diff] [blame] | 1358 | const char *name = mx3fb_pdata->name; |
| 1359 | unsigned int irq; |
| 1360 | struct fb_info *fbi; |
| 1361 | struct mx3fb_info *mx3fbi; |
| 1362 | const struct fb_videomode *mode; |
| 1363 | int ret, num_modes; |
Guennadi Liakhovetski | 86528da | 2009-01-21 10:32:34 -0700 | [diff] [blame] | 1364 | |
Sascha Hauer | f910fb8 | 2011-12-01 14:58:52 +0100 | [diff] [blame] | 1365 | if (mx3fb_pdata->disp_data_fmt >= ARRAY_SIZE(di_mappings)) { |
| 1366 | dev_err(dev, "Illegal display data format %d\n", |
| 1367 | mx3fb_pdata->disp_data_fmt); |
| 1368 | return -EINVAL; |
| 1369 | } |
| 1370 | |
Guennadi Liakhovetski | 6e1588cb | 2009-02-26 21:34:28 +0100 | [diff] [blame] | 1371 | ichan->client = mx3fb; |
| 1372 | irq = ichan->eof_irq; |
Guennadi Liakhovetski | 86528da | 2009-01-21 10:32:34 -0700 | [diff] [blame] | 1373 | |
Guennadi Liakhovetski | 6e1588cb | 2009-02-26 21:34:28 +0100 | [diff] [blame] | 1374 | if (ichan->dma_chan.chan_id != IDMAC_SDC_0) |
| 1375 | return -EINVAL; |
Guennadi Liakhovetski | 86528da | 2009-01-21 10:32:34 -0700 | [diff] [blame] | 1376 | |
Guennadi Liakhovetski | 6e1588cb | 2009-02-26 21:34:28 +0100 | [diff] [blame] | 1377 | fbi = mx3fb_init_fbinfo(dev, &mx3fb_ops); |
| 1378 | if (!fbi) |
| 1379 | return -ENOMEM; |
Guennadi Liakhovetski | 86528da | 2009-01-21 10:32:34 -0700 | [diff] [blame] | 1380 | |
Guennadi Liakhovetski | 6e1588cb | 2009-02-26 21:34:28 +0100 | [diff] [blame] | 1381 | if (!fb_mode) |
| 1382 | fb_mode = name; |
Guennadi Liakhovetski | 86528da | 2009-01-21 10:32:34 -0700 | [diff] [blame] | 1383 | |
Guennadi Liakhovetski | 6e1588cb | 2009-02-26 21:34:28 +0100 | [diff] [blame] | 1384 | if (!fb_mode) { |
| 1385 | ret = -EINVAL; |
| 1386 | goto emode; |
| 1387 | } |
Guennadi Liakhovetski | 86528da | 2009-01-21 10:32:34 -0700 | [diff] [blame] | 1388 | |
Guennadi Liakhovetski | 6e1588cb | 2009-02-26 21:34:28 +0100 | [diff] [blame] | 1389 | if (mx3fb_pdata->mode && mx3fb_pdata->num_modes) { |
| 1390 | mode = mx3fb_pdata->mode; |
| 1391 | num_modes = mx3fb_pdata->num_modes; |
| 1392 | } else { |
| 1393 | mode = mx3fb_modedb; |
| 1394 | num_modes = ARRAY_SIZE(mx3fb_modedb); |
| 1395 | } |
Guennadi Liakhovetski | 86528da | 2009-01-21 10:32:34 -0700 | [diff] [blame] | 1396 | |
Guennadi Liakhovetski | 6e1588cb | 2009-02-26 21:34:28 +0100 | [diff] [blame] | 1397 | if (!fb_find_mode(&fbi->var, fbi, fb_mode, mode, |
| 1398 | num_modes, NULL, default_bpp)) { |
| 1399 | ret = -EBUSY; |
| 1400 | goto emode; |
| 1401 | } |
Guennadi Liakhovetski | 86528da | 2009-01-21 10:32:34 -0700 | [diff] [blame] | 1402 | |
Guennadi Liakhovetski | 6e1588cb | 2009-02-26 21:34:28 +0100 | [diff] [blame] | 1403 | fb_videomode_to_modelist(mode, num_modes, &fbi->modelist); |
Guennadi Liakhovetski | 86528da | 2009-01-21 10:32:34 -0700 | [diff] [blame] | 1404 | |
Guennadi Liakhovetski | 6e1588cb | 2009-02-26 21:34:28 +0100 | [diff] [blame] | 1405 | /* Default Y virtual size is 2x panel size */ |
| 1406 | fbi->var.yres_virtual = fbi->var.yres * 2; |
Guennadi Liakhovetski | 86528da | 2009-01-21 10:32:34 -0700 | [diff] [blame] | 1407 | |
Guennadi Liakhovetski | 6e1588cb | 2009-02-26 21:34:28 +0100 | [diff] [blame] | 1408 | mx3fb->fbi = fbi; |
Guennadi Liakhovetski | 86528da | 2009-01-21 10:32:34 -0700 | [diff] [blame] | 1409 | |
Guennadi Liakhovetski | 6e1588cb | 2009-02-26 21:34:28 +0100 | [diff] [blame] | 1410 | /* set Display Interface clock period */ |
| 1411 | mx3fb_write_reg(mx3fb, 0x00100010L, DI_HSP_CLK_PER); |
| 1412 | /* Might need to trigger HSP clock change - see 44.3.3.8.5 */ |
Guennadi Liakhovetski | 86528da | 2009-01-21 10:32:34 -0700 | [diff] [blame] | 1413 | |
Guennadi Liakhovetski | 6e1588cb | 2009-02-26 21:34:28 +0100 | [diff] [blame] | 1414 | sdc_set_brightness(mx3fb, 255); |
| 1415 | sdc_set_global_alpha(mx3fb, true, 0xFF); |
| 1416 | sdc_set_color_key(mx3fb, IDMAC_SDC_0, false, 0); |
Guennadi Liakhovetski | 86528da | 2009-01-21 10:32:34 -0700 | [diff] [blame] | 1417 | |
Guennadi Liakhovetski | 6e1588cb | 2009-02-26 21:34:28 +0100 | [diff] [blame] | 1418 | mx3fbi = fbi->par; |
| 1419 | mx3fbi->idmac_channel = ichan; |
| 1420 | mx3fbi->ipu_ch = ichan->dma_chan.chan_id; |
| 1421 | mx3fbi->mx3fb = mx3fb; |
| 1422 | mx3fbi->blank = FB_BLANK_NORMAL; |
Guennadi Liakhovetski | 86528da | 2009-01-21 10:32:34 -0700 | [diff] [blame] | 1423 | |
Sascha Hauer | f910fb8 | 2011-12-01 14:58:52 +0100 | [diff] [blame] | 1424 | mx3fb->disp_data_fmt = mx3fb_pdata->disp_data_fmt; |
| 1425 | |
Guennadi Liakhovetski | 6e1588cb | 2009-02-26 21:34:28 +0100 | [diff] [blame] | 1426 | init_completion(&mx3fbi->flip_cmpl); |
| 1427 | disable_irq(ichan->eof_irq); |
| 1428 | dev_dbg(mx3fb->dev, "disabling irq %d\n", ichan->eof_irq); |
Guennadi Liakhovetski | 20de03d | 2009-08-06 15:07:40 -0700 | [diff] [blame] | 1429 | ret = __set_par(fbi, false); |
| 1430 | if (ret < 0) |
| 1431 | goto esetpar; |
| 1432 | |
| 1433 | __blank(FB_BLANK_UNBLANK, fbi); |
Guennadi Liakhovetski | 86528da | 2009-01-21 10:32:34 -0700 | [diff] [blame] | 1434 | |
Sascha Hauer | 2eec8c3 | 2009-03-20 20:27:37 +0100 | [diff] [blame] | 1435 | dev_info(dev, "registered, using mode %s\n", fb_mode); |
Guennadi Liakhovetski | 86528da | 2009-01-21 10:32:34 -0700 | [diff] [blame] | 1436 | |
Guennadi Liakhovetski | 6e1588cb | 2009-02-26 21:34:28 +0100 | [diff] [blame] | 1437 | ret = register_framebuffer(fbi); |
| 1438 | if (ret < 0) |
| 1439 | goto erfb; |
Guennadi Liakhovetski | 86528da | 2009-01-21 10:32:34 -0700 | [diff] [blame] | 1440 | |
Guennadi Liakhovetski | 6e1588cb | 2009-02-26 21:34:28 +0100 | [diff] [blame] | 1441 | return 0; |
Guennadi Liakhovetski | 86528da | 2009-01-21 10:32:34 -0700 | [diff] [blame] | 1442 | |
| 1443 | erfb: |
| 1444 | esetpar: |
| 1445 | emode: |
Guennadi Liakhovetski | 6e1588cb | 2009-02-26 21:34:28 +0100 | [diff] [blame] | 1446 | fb_dealloc_cmap(&fbi->cmap); |
| 1447 | framebuffer_release(fbi); |
Guennadi Liakhovetski | 86528da | 2009-01-21 10:32:34 -0700 | [diff] [blame] | 1448 | |
Guennadi Liakhovetski | 6e1588cb | 2009-02-26 21:34:28 +0100 | [diff] [blame] | 1449 | return ret; |
Guennadi Liakhovetski | 86528da | 2009-01-21 10:32:34 -0700 | [diff] [blame] | 1450 | } |
| 1451 | |
| 1452 | static bool chan_filter(struct dma_chan *chan, void *arg) |
| 1453 | { |
Guennadi Liakhovetski | 6e1588cb | 2009-02-26 21:34:28 +0100 | [diff] [blame] | 1454 | struct dma_chan_request *rq = arg; |
| 1455 | struct device *dev; |
| 1456 | struct mx3fb_platform_data *mx3fb_pdata; |
Guennadi Liakhovetski | 86528da | 2009-01-21 10:32:34 -0700 | [diff] [blame] | 1457 | |
Sascha Hauer | 1b346af | 2010-08-16 08:03:04 +0200 | [diff] [blame] | 1458 | if (!imx_dma_is_ipu(chan)) |
| 1459 | return false; |
| 1460 | |
Guennadi Liakhovetski | 6e1588cb | 2009-02-26 21:34:28 +0100 | [diff] [blame] | 1461 | if (!rq) |
| 1462 | return false; |
Guennadi Liakhovetski | 86528da | 2009-01-21 10:32:34 -0700 | [diff] [blame] | 1463 | |
Guennadi Liakhovetski | 6e1588cb | 2009-02-26 21:34:28 +0100 | [diff] [blame] | 1464 | dev = rq->mx3fb->dev; |
Jingoo Han | 521fdb7 | 2013-09-17 13:57:22 +0900 | [diff] [blame] | 1465 | mx3fb_pdata = dev_get_platdata(dev); |
Guennadi Liakhovetski | 86528da | 2009-01-21 10:32:34 -0700 | [diff] [blame] | 1466 | |
Guennadi Liakhovetski | 6e1588cb | 2009-02-26 21:34:28 +0100 | [diff] [blame] | 1467 | return rq->id == chan->chan_id && |
| 1468 | mx3fb_pdata->dma_dev == chan->device->dev; |
Guennadi Liakhovetski | 86528da | 2009-01-21 10:32:34 -0700 | [diff] [blame] | 1469 | } |
| 1470 | |
| 1471 | static void release_fbi(struct fb_info *fbi) |
| 1472 | { |
Guennadi Liakhovetski | 6e1588cb | 2009-02-26 21:34:28 +0100 | [diff] [blame] | 1473 | mx3fb_unmap_video_memory(fbi); |
Guennadi Liakhovetski | 86528da | 2009-01-21 10:32:34 -0700 | [diff] [blame] | 1474 | |
Guennadi Liakhovetski | 6e1588cb | 2009-02-26 21:34:28 +0100 | [diff] [blame] | 1475 | fb_dealloc_cmap(&fbi->cmap); |
Guennadi Liakhovetski | 86528da | 2009-01-21 10:32:34 -0700 | [diff] [blame] | 1476 | |
Guennadi Liakhovetski | 6e1588cb | 2009-02-26 21:34:28 +0100 | [diff] [blame] | 1477 | unregister_framebuffer(fbi); |
| 1478 | framebuffer_release(fbi); |
Guennadi Liakhovetski | 86528da | 2009-01-21 10:32:34 -0700 | [diff] [blame] | 1479 | } |
| 1480 | |
| 1481 | static int mx3fb_probe(struct platform_device *pdev) |
| 1482 | { |
Guennadi Liakhovetski | 6e1588cb | 2009-02-26 21:34:28 +0100 | [diff] [blame] | 1483 | struct device *dev = &pdev->dev; |
| 1484 | int ret; |
| 1485 | struct resource *sdc_reg; |
| 1486 | struct mx3fb_data *mx3fb; |
| 1487 | dma_cap_mask_t mask; |
| 1488 | struct dma_chan *chan; |
| 1489 | struct dma_chan_request rq; |
Guennadi Liakhovetski | 86528da | 2009-01-21 10:32:34 -0700 | [diff] [blame] | 1490 | |
Guennadi Liakhovetski | 6e1588cb | 2009-02-26 21:34:28 +0100 | [diff] [blame] | 1491 | /* |
| 1492 | * Display Interface (DI) and Synchronous Display Controller (SDC) |
| 1493 | * registers |
| 1494 | */ |
| 1495 | sdc_reg = platform_get_resource(pdev, IORESOURCE_MEM, 0); |
| 1496 | if (!sdc_reg) |
| 1497 | return -EINVAL; |
Guennadi Liakhovetski | 86528da | 2009-01-21 10:32:34 -0700 | [diff] [blame] | 1498 | |
Denis Carikli | c58f661 | 2014-03-14 10:12:45 +0100 | [diff] [blame^] | 1499 | mx3fb = devm_kzalloc(&pdev->dev, sizeof(*mx3fb), GFP_KERNEL); |
Guennadi Liakhovetski | 6e1588cb | 2009-02-26 21:34:28 +0100 | [diff] [blame] | 1500 | if (!mx3fb) |
| 1501 | return -ENOMEM; |
Guennadi Liakhovetski | 86528da | 2009-01-21 10:32:34 -0700 | [diff] [blame] | 1502 | |
Guennadi Liakhovetski | 6e1588cb | 2009-02-26 21:34:28 +0100 | [diff] [blame] | 1503 | spin_lock_init(&mx3fb->lock); |
Guennadi Liakhovetski | 86528da | 2009-01-21 10:32:34 -0700 | [diff] [blame] | 1504 | |
Guennadi Liakhovetski | 6e1588cb | 2009-02-26 21:34:28 +0100 | [diff] [blame] | 1505 | mx3fb->reg_base = ioremap(sdc_reg->start, resource_size(sdc_reg)); |
| 1506 | if (!mx3fb->reg_base) { |
| 1507 | ret = -ENOMEM; |
| 1508 | goto eremap; |
| 1509 | } |
Guennadi Liakhovetski | 86528da | 2009-01-21 10:32:34 -0700 | [diff] [blame] | 1510 | |
Joe Perches | 3b80ffd | 2010-12-13 13:42:21 -0800 | [diff] [blame] | 1511 | pr_debug("Remapped %pR at %p\n", sdc_reg, mx3fb->reg_base); |
Guennadi Liakhovetski | 86528da | 2009-01-21 10:32:34 -0700 | [diff] [blame] | 1512 | |
Guennadi Liakhovetski | 6e1588cb | 2009-02-26 21:34:28 +0100 | [diff] [blame] | 1513 | /* IDMAC interface */ |
| 1514 | dmaengine_get(); |
Guennadi Liakhovetski | 86528da | 2009-01-21 10:32:34 -0700 | [diff] [blame] | 1515 | |
Guennadi Liakhovetski | 6e1588cb | 2009-02-26 21:34:28 +0100 | [diff] [blame] | 1516 | mx3fb->dev = dev; |
| 1517 | platform_set_drvdata(pdev, mx3fb); |
Guennadi Liakhovetski | 86528da | 2009-01-21 10:32:34 -0700 | [diff] [blame] | 1518 | |
Guennadi Liakhovetski | 6e1588cb | 2009-02-26 21:34:28 +0100 | [diff] [blame] | 1519 | rq.mx3fb = mx3fb; |
Guennadi Liakhovetski | 86528da | 2009-01-21 10:32:34 -0700 | [diff] [blame] | 1520 | |
Guennadi Liakhovetski | 6e1588cb | 2009-02-26 21:34:28 +0100 | [diff] [blame] | 1521 | dma_cap_zero(mask); |
| 1522 | dma_cap_set(DMA_SLAVE, mask); |
| 1523 | dma_cap_set(DMA_PRIVATE, mask); |
| 1524 | rq.id = IDMAC_SDC_0; |
| 1525 | chan = dma_request_channel(mask, chan_filter, &rq); |
| 1526 | if (!chan) { |
| 1527 | ret = -EBUSY; |
| 1528 | goto ersdc0; |
| 1529 | } |
Guennadi Liakhovetski | 86528da | 2009-01-21 10:32:34 -0700 | [diff] [blame] | 1530 | |
Alberto Panizzo | b3cb537 | 2010-02-02 13:43:59 -0800 | [diff] [blame] | 1531 | mx3fb->backlight_level = 255; |
| 1532 | |
Guennadi Liakhovetski | 6e1588cb | 2009-02-26 21:34:28 +0100 | [diff] [blame] | 1533 | ret = init_fb_chan(mx3fb, to_idmac_chan(chan)); |
| 1534 | if (ret < 0) |
| 1535 | goto eisdc0; |
Guennadi Liakhovetski | 86528da | 2009-01-21 10:32:34 -0700 | [diff] [blame] | 1536 | |
Guennadi Liakhovetski | 6e1588cb | 2009-02-26 21:34:28 +0100 | [diff] [blame] | 1537 | return 0; |
Guennadi Liakhovetski | 86528da | 2009-01-21 10:32:34 -0700 | [diff] [blame] | 1538 | |
| 1539 | eisdc0: |
Guennadi Liakhovetski | 6e1588cb | 2009-02-26 21:34:28 +0100 | [diff] [blame] | 1540 | dma_release_channel(chan); |
Guennadi Liakhovetski | 86528da | 2009-01-21 10:32:34 -0700 | [diff] [blame] | 1541 | ersdc0: |
Guennadi Liakhovetski | 6e1588cb | 2009-02-26 21:34:28 +0100 | [diff] [blame] | 1542 | dmaengine_put(); |
| 1543 | iounmap(mx3fb->reg_base); |
Guennadi Liakhovetski | 86528da | 2009-01-21 10:32:34 -0700 | [diff] [blame] | 1544 | eremap: |
Guennadi Liakhovetski | 6e1588cb | 2009-02-26 21:34:28 +0100 | [diff] [blame] | 1545 | dev_err(dev, "mx3fb: failed to register fb\n"); |
| 1546 | return ret; |
Guennadi Liakhovetski | 86528da | 2009-01-21 10:32:34 -0700 | [diff] [blame] | 1547 | } |
| 1548 | |
| 1549 | static int mx3fb_remove(struct platform_device *dev) |
| 1550 | { |
Guennadi Liakhovetski | 6e1588cb | 2009-02-26 21:34:28 +0100 | [diff] [blame] | 1551 | struct mx3fb_data *mx3fb = platform_get_drvdata(dev); |
| 1552 | struct fb_info *fbi = mx3fb->fbi; |
| 1553 | struct mx3fb_info *mx3_fbi = fbi->par; |
| 1554 | struct dma_chan *chan; |
Guennadi Liakhovetski | 86528da | 2009-01-21 10:32:34 -0700 | [diff] [blame] | 1555 | |
Guennadi Liakhovetski | 6e1588cb | 2009-02-26 21:34:28 +0100 | [diff] [blame] | 1556 | chan = &mx3_fbi->idmac_channel->dma_chan; |
| 1557 | release_fbi(fbi); |
Guennadi Liakhovetski | 86528da | 2009-01-21 10:32:34 -0700 | [diff] [blame] | 1558 | |
Guennadi Liakhovetski | 6e1588cb | 2009-02-26 21:34:28 +0100 | [diff] [blame] | 1559 | dma_release_channel(chan); |
| 1560 | dmaengine_put(); |
Guennadi Liakhovetski | 86528da | 2009-01-21 10:32:34 -0700 | [diff] [blame] | 1561 | |
Guennadi Liakhovetski | 6e1588cb | 2009-02-26 21:34:28 +0100 | [diff] [blame] | 1562 | iounmap(mx3fb->reg_base); |
Guennadi Liakhovetski | 6e1588cb | 2009-02-26 21:34:28 +0100 | [diff] [blame] | 1563 | return 0; |
Guennadi Liakhovetski | 86528da | 2009-01-21 10:32:34 -0700 | [diff] [blame] | 1564 | } |
| 1565 | |
| 1566 | static struct platform_driver mx3fb_driver = { |
Guennadi Liakhovetski | 6e1588cb | 2009-02-26 21:34:28 +0100 | [diff] [blame] | 1567 | .driver = { |
Uwe Kleine-König | 4a0ea00 | 2012-10-05 11:20:07 +0200 | [diff] [blame] | 1568 | .name = MX3FB_NAME, |
| 1569 | .owner = THIS_MODULE, |
Guennadi Liakhovetski | 6e1588cb | 2009-02-26 21:34:28 +0100 | [diff] [blame] | 1570 | }, |
| 1571 | .probe = mx3fb_probe, |
| 1572 | .remove = mx3fb_remove, |
| 1573 | .suspend = mx3fb_suspend, |
| 1574 | .resume = mx3fb_resume, |
Guennadi Liakhovetski | 86528da | 2009-01-21 10:32:34 -0700 | [diff] [blame] | 1575 | }; |
| 1576 | |
| 1577 | /* |
| 1578 | * Parse user specified options (`video=mx3fb:') |
| 1579 | * example: |
Guennadi Liakhovetski | 6e1588cb | 2009-02-26 21:34:28 +0100 | [diff] [blame] | 1580 | * video=mx3fb:bpp=16 |
Guennadi Liakhovetski | 86528da | 2009-01-21 10:32:34 -0700 | [diff] [blame] | 1581 | */ |
Guennadi Liakhovetski | d88ca815 | 2009-04-06 19:01:05 -0700 | [diff] [blame] | 1582 | static int __init mx3fb_setup(void) |
Guennadi Liakhovetski | 86528da | 2009-01-21 10:32:34 -0700 | [diff] [blame] | 1583 | { |
| 1584 | #ifndef MODULE |
Guennadi Liakhovetski | 6e1588cb | 2009-02-26 21:34:28 +0100 | [diff] [blame] | 1585 | char *opt, *options = NULL; |
Guennadi Liakhovetski | 86528da | 2009-01-21 10:32:34 -0700 | [diff] [blame] | 1586 | |
Guennadi Liakhovetski | 6e1588cb | 2009-02-26 21:34:28 +0100 | [diff] [blame] | 1587 | if (fb_get_options("mx3fb", &options)) |
| 1588 | return -ENODEV; |
Guennadi Liakhovetski | 86528da | 2009-01-21 10:32:34 -0700 | [diff] [blame] | 1589 | |
Guennadi Liakhovetski | 6e1588cb | 2009-02-26 21:34:28 +0100 | [diff] [blame] | 1590 | if (!options || !*options) |
| 1591 | return 0; |
Guennadi Liakhovetski | 86528da | 2009-01-21 10:32:34 -0700 | [diff] [blame] | 1592 | |
Guennadi Liakhovetski | 6e1588cb | 2009-02-26 21:34:28 +0100 | [diff] [blame] | 1593 | while ((opt = strsep(&options, ",")) != NULL) { |
| 1594 | if (!*opt) |
| 1595 | continue; |
| 1596 | if (!strncmp(opt, "bpp=", 4)) |
| 1597 | default_bpp = simple_strtoul(opt + 4, NULL, 0); |
| 1598 | else |
| 1599 | fb_mode = opt; |
| 1600 | } |
Guennadi Liakhovetski | 86528da | 2009-01-21 10:32:34 -0700 | [diff] [blame] | 1601 | #endif |
| 1602 | |
Guennadi Liakhovetski | 6e1588cb | 2009-02-26 21:34:28 +0100 | [diff] [blame] | 1603 | return 0; |
Guennadi Liakhovetski | 86528da | 2009-01-21 10:32:34 -0700 | [diff] [blame] | 1604 | } |
| 1605 | |
| 1606 | static int __init mx3fb_init(void) |
| 1607 | { |
Guennadi Liakhovetski | 6e1588cb | 2009-02-26 21:34:28 +0100 | [diff] [blame] | 1608 | int ret = mx3fb_setup(); |
Guennadi Liakhovetski | 86528da | 2009-01-21 10:32:34 -0700 | [diff] [blame] | 1609 | |
Guennadi Liakhovetski | 6e1588cb | 2009-02-26 21:34:28 +0100 | [diff] [blame] | 1610 | if (ret < 0) |
| 1611 | return ret; |
Guennadi Liakhovetski | 86528da | 2009-01-21 10:32:34 -0700 | [diff] [blame] | 1612 | |
Guennadi Liakhovetski | 6e1588cb | 2009-02-26 21:34:28 +0100 | [diff] [blame] | 1613 | ret = platform_driver_register(&mx3fb_driver); |
| 1614 | return ret; |
Guennadi Liakhovetski | 86528da | 2009-01-21 10:32:34 -0700 | [diff] [blame] | 1615 | } |
| 1616 | |
| 1617 | static void __exit mx3fb_exit(void) |
| 1618 | { |
Guennadi Liakhovetski | 6e1588cb | 2009-02-26 21:34:28 +0100 | [diff] [blame] | 1619 | platform_driver_unregister(&mx3fb_driver); |
Guennadi Liakhovetski | 86528da | 2009-01-21 10:32:34 -0700 | [diff] [blame] | 1620 | } |
| 1621 | |
| 1622 | module_init(mx3fb_init); |
| 1623 | module_exit(mx3fb_exit); |
| 1624 | |
| 1625 | MODULE_AUTHOR("Freescale Semiconductor, Inc."); |
| 1626 | MODULE_DESCRIPTION("MX3 framebuffer driver"); |
| 1627 | MODULE_ALIAS("platform:" MX3FB_NAME); |
| 1628 | MODULE_LICENSE("GPL v2"); |