Subbaraman Narayanamurthy | 50dae7a | 2018-05-18 15:34:19 -0700 | [diff] [blame] | 1 | /* Copyright (c) 2014-2018, The Linux Foundation. All rights reserved. |
David Collins | 8885f79 | 2017-01-26 14:36:34 -0800 | [diff] [blame] | 2 | * |
| 3 | * This program is free software; you can redistribute it and/or modify |
| 4 | * it under the terms of the GNU General Public License version 2 and |
| 5 | * only version 2 as published by the Free Software Foundation. |
| 6 | * |
| 7 | * This program is distributed in the hope that it will be useful, |
| 8 | * but WITHOUT ANY WARRANTY; without even the implied warranty of |
| 9 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
| 10 | * GNU General Public License for more details. |
| 11 | */ |
| 12 | |
| 13 | #include <linux/module.h> |
| 14 | #include <linux/init.h> |
| 15 | #include <linux/kernel.h> |
| 16 | #include <linux/regmap.h> |
| 17 | #include <linux/errno.h> |
| 18 | #include <linux/leds.h> |
| 19 | #include <linux/slab.h> |
| 20 | #include <linux/of_device.h> |
| 21 | #include <linux/of_address.h> |
| 22 | #include <linux/spmi.h> |
| 23 | #include <linux/platform_device.h> |
| 24 | #include <linux/interrupt.h> |
Kiran Gunda | e464871 | 2018-07-19 15:02:59 +0530 | [diff] [blame] | 25 | #include <linux/irq.h> |
David Collins | 8885f79 | 2017-01-26 14:36:34 -0800 | [diff] [blame] | 26 | #include <linux/err.h> |
| 27 | #include <linux/delay.h> |
| 28 | #include <linux/leds-qpnp-wled.h> |
| 29 | #include <linux/qpnp/qpnp-revid.h> |
| 30 | |
| 31 | /* base addresses */ |
| 32 | #define QPNP_WLED_CTRL_BASE "qpnp-wled-ctrl-base" |
| 33 | #define QPNP_WLED_SINK_BASE "qpnp-wled-sink-base" |
| 34 | |
| 35 | /* ctrl registers */ |
| 36 | #define QPNP_WLED_FAULT_STATUS(b) (b + 0x08) |
Subbaraman Narayanamurthy | b5ae318 | 2017-02-17 15:14:06 -0800 | [diff] [blame] | 37 | #define QPNP_WLED_INT_RT_STS(b) (b + 0x10) |
David Collins | 8885f79 | 2017-01-26 14:36:34 -0800 | [diff] [blame] | 38 | #define QPNP_WLED_EN_REG(b) (b + 0x46) |
| 39 | #define QPNP_WLED_FDBK_OP_REG(b) (b + 0x48) |
| 40 | #define QPNP_WLED_VREF_REG(b) (b + 0x49) |
| 41 | #define QPNP_WLED_BOOST_DUTY_REG(b) (b + 0x4B) |
| 42 | #define QPNP_WLED_SWITCH_FREQ_REG(b) (b + 0x4C) |
| 43 | #define QPNP_WLED_OVP_REG(b) (b + 0x4D) |
| 44 | #define QPNP_WLED_ILIM_REG(b) (b + 0x4E) |
| 45 | #define QPNP_WLED_AMOLED_VOUT_REG(b) (b + 0x4F) |
| 46 | #define QPNP_WLED_SOFTSTART_RAMP_DLY(b) (b + 0x53) |
| 47 | #define QPNP_WLED_VLOOP_COMP_RES_REG(b) (b + 0x55) |
| 48 | #define QPNP_WLED_VLOOP_COMP_GM_REG(b) (b + 0x56) |
Subbaraman Narayanamurthy | 5569884 | 2017-02-17 15:48:47 -0800 | [diff] [blame] | 49 | #define QPNP_WLED_EN_PSM_REG(b) (b + 0x5A) |
David Collins | 8885f79 | 2017-01-26 14:36:34 -0800 | [diff] [blame] | 50 | #define QPNP_WLED_PSM_CTRL_REG(b) (b + 0x5B) |
| 51 | #define QPNP_WLED_LCD_AUTO_PFM_REG(b) (b + 0x5C) |
| 52 | #define QPNP_WLED_SC_PRO_REG(b) (b + 0x5E) |
| 53 | #define QPNP_WLED_SWIRE_AVDD_REG(b) (b + 0x5F) |
| 54 | #define QPNP_WLED_CTRL_SPARE_REG(b) (b + 0xDF) |
| 55 | #define QPNP_WLED_TEST1_REG(b) (b + 0xE2) |
| 56 | #define QPNP_WLED_TEST4_REG(b) (b + 0xE5) |
| 57 | #define QPNP_WLED_REF_7P7_TRIM_REG(b) (b + 0xF2) |
| 58 | |
| 59 | #define QPNP_WLED_7P7_TRIM_MASK GENMASK(3, 0) |
| 60 | #define QPNP_WLED_EN_MASK 0x7F |
| 61 | #define QPNP_WLED_EN_SHIFT 7 |
| 62 | #define QPNP_WLED_FDBK_OP_MASK 0xF8 |
| 63 | #define QPNP_WLED_VREF_MASK GENMASK(3, 0) |
| 64 | |
| 65 | #define QPNP_WLED_VLOOP_COMP_RES_MASK 0xF0 |
| 66 | #define QPNP_WLED_VLOOP_COMP_RES_OVERWRITE 0x80 |
David Collins | 8885f79 | 2017-01-26 14:36:34 -0800 | [diff] [blame] | 67 | #define QPNP_WLED_LOOP_COMP_RES_STEP_KOHM 20 |
| 68 | #define QPNP_WLED_LOOP_COMP_RES_MIN_KOHM 20 |
| 69 | #define QPNP_WLED_LOOP_COMP_RES_MAX_KOHM 320 |
| 70 | #define QPNP_WLED_VLOOP_COMP_GM_MASK GENMASK(3, 0) |
| 71 | #define QPNP_WLED_VLOOP_COMP_GM_OVERWRITE 0x80 |
| 72 | #define QPNP_WLED_VLOOP_COMP_AUTO_GM_EN BIT(6) |
| 73 | #define QPNP_WLED_VLOOP_COMP_AUTO_GM_THRESH_MASK GENMASK(5, 4) |
| 74 | #define QPNP_WLED_VLOOP_COMP_AUTO_GM_THRESH_SHIFT 4 |
| 75 | #define QPNP_WLED_LOOP_EA_GM_DFLT_AMOLED_PMI8994 0x03 |
| 76 | #define QPNP_WLED_LOOP_GM_DFLT_AMOLED_PMI8998 0x09 |
| 77 | #define QPNP_WLED_LOOP_GM_DFLT_WLED 0x09 |
| 78 | #define QPNP_WLED_LOOP_EA_GM_MIN 0x0 |
| 79 | #define QPNP_WLED_LOOP_EA_GM_MAX 0xF |
| 80 | #define QPNP_WLED_LOOP_AUTO_GM_THRESH_MAX 3 |
| 81 | #define QPNP_WLED_LOOP_AUTO_GM_DFLT_THRESH 1 |
| 82 | #define QPNP_WLED_VREF_PSM_MASK 0xF8 |
| 83 | #define QPNP_WLED_VREF_PSM_STEP_MV 50 |
| 84 | #define QPNP_WLED_VREF_PSM_MIN_MV 400 |
| 85 | #define QPNP_WLED_VREF_PSM_MAX_MV 750 |
| 86 | #define QPNP_WLED_VREF_PSM_DFLT_AMOLED_MV 450 |
Subbaraman Narayanamurthy | 5569884 | 2017-02-17 15:48:47 -0800 | [diff] [blame] | 87 | #define QPNP_WLED_PSM_OVERWRITE_BIT BIT(7) |
David Collins | 8885f79 | 2017-01-26 14:36:34 -0800 | [diff] [blame] | 88 | #define QPNP_WLED_LCD_AUTO_PFM_DFLT_THRESH 1 |
| 89 | #define QPNP_WLED_LCD_AUTO_PFM_THRESH_MAX 0xF |
| 90 | #define QPNP_WLED_LCD_AUTO_PFM_EN_SHIFT 7 |
| 91 | #define QPNP_WLED_LCD_AUTO_PFM_EN_BIT BIT(7) |
| 92 | #define QPNP_WLED_LCD_AUTO_PFM_THRESH_MASK GENMASK(3, 0) |
Subbaraman Narayanamurthy | 5569884 | 2017-02-17 15:48:47 -0800 | [diff] [blame] | 93 | #define QPNP_WLED_EN_PSM_BIT BIT(7) |
David Collins | 8885f79 | 2017-01-26 14:36:34 -0800 | [diff] [blame] | 94 | |
| 95 | #define QPNP_WLED_ILIM_MASK GENMASK(2, 0) |
| 96 | #define QPNP_WLED_ILIM_OVERWRITE BIT(7) |
| 97 | #define PMI8994_WLED_ILIM_MIN_MA 105 |
| 98 | #define PMI8994_WLED_ILIM_MAX_MA 1980 |
| 99 | #define PMI8994_WLED_DFLT_ILIM_MA 980 |
| 100 | #define PMI8994_AMOLED_DFLT_ILIM_MA 385 |
| 101 | #define PMI8998_WLED_ILIM_MAX_MA 1500 |
| 102 | #define PMI8998_WLED_DFLT_ILIM_MA 970 |
| 103 | #define PMI8998_AMOLED_DFLT_ILIM_MA 620 |
| 104 | #define QPNP_WLED_BOOST_DUTY_MASK 0xFC |
| 105 | #define QPNP_WLED_BOOST_DUTY_STEP_NS 52 |
| 106 | #define QPNP_WLED_BOOST_DUTY_MIN_NS 26 |
| 107 | #define QPNP_WLED_BOOST_DUTY_MAX_NS 156 |
| 108 | #define QPNP_WLED_DEF_BOOST_DUTY_NS 104 |
Subbaraman Narayanamurthy | 644b09ac | 2017-09-12 15:36:37 -0700 | [diff] [blame] | 109 | #define QPNP_WLED_SWITCH_FREQ_MASK GENMASK(3, 0) |
| 110 | #define QPNP_WLED_SWITCH_FREQ_OVERWRITE BIT(7) |
David Collins | 8885f79 | 2017-01-26 14:36:34 -0800 | [diff] [blame] | 111 | #define QPNP_WLED_OVP_MASK GENMASK(1, 0) |
| 112 | #define QPNP_WLED_TEST4_EN_DEB_BYPASS_ILIM_BIT BIT(6) |
| 113 | #define QPNP_WLED_TEST4_EN_SH_FOR_SS_BIT BIT(5) |
| 114 | #define QPNP_WLED_TEST4_EN_CLAMP_BIT BIT(4) |
| 115 | #define QPNP_WLED_TEST4_EN_SOFT_START_BIT BIT(1) |
| 116 | #define QPNP_WLED_TEST4_EN_VREF_UP \ |
| 117 | (QPNP_WLED_TEST4_EN_SH_FOR_SS_BIT | \ |
| 118 | QPNP_WLED_TEST4_EN_CLAMP_BIT | \ |
| 119 | QPNP_WLED_TEST4_EN_SOFT_START_BIT) |
| 120 | #define QPNP_WLED_TEST4_EN_IIND_UP 0x1 |
Subbaraman Narayanamurthy | b5ae318 | 2017-02-17 15:14:06 -0800 | [diff] [blame] | 121 | #define QPNP_WLED_ILIM_FAULT_BIT BIT(0) |
| 122 | #define QPNP_WLED_OVP_FAULT_BIT BIT(1) |
| 123 | #define QPNP_WLED_SC_FAULT_BIT BIT(2) |
Anirudh Ghayal | ce9914f | 2017-08-31 12:11:06 +0530 | [diff] [blame] | 124 | #define QPNP_WLED_OVP_FLT_RT_STS_BIT BIT(1) |
David Collins | 8885f79 | 2017-01-26 14:36:34 -0800 | [diff] [blame] | 125 | |
Subbaraman Narayanamurthy | 80ee57af | 2017-10-19 18:38:09 -0700 | [diff] [blame] | 126 | /* QPNP_WLED_SOFTSTART_RAMP_DLY */ |
| 127 | #define SOFTSTART_OVERWRITE_BIT BIT(7) |
| 128 | #define SOFTSTART_RAMP_DELAY_MASK GENMASK(2, 0) |
| 129 | |
David Collins | 8885f79 | 2017-01-26 14:36:34 -0800 | [diff] [blame] | 130 | /* sink registers */ |
| 131 | #define QPNP_WLED_CURR_SINK_REG(b) (b + 0x46) |
| 132 | #define QPNP_WLED_SYNC_REG(b) (b + 0x47) |
| 133 | #define QPNP_WLED_MOD_REG(b) (b + 0x4A) |
| 134 | #define QPNP_WLED_HYB_THRES_REG(b) (b + 0x4B) |
| 135 | #define QPNP_WLED_MOD_EN_REG(b, n) (b + 0x50 + (n * 0x10)) |
| 136 | #define QPNP_WLED_SYNC_DLY_REG(b, n) (QPNP_WLED_MOD_EN_REG(b, n) + 0x01) |
| 137 | #define QPNP_WLED_FS_CURR_REG(b, n) (QPNP_WLED_MOD_EN_REG(b, n) + 0x02) |
| 138 | #define QPNP_WLED_CABC_REG(b, n) (QPNP_WLED_MOD_EN_REG(b, n) + 0x06) |
| 139 | #define QPNP_WLED_BRIGHT_LSB_REG(b, n) (QPNP_WLED_MOD_EN_REG(b, n) + 0x07) |
| 140 | #define QPNP_WLED_BRIGHT_MSB_REG(b, n) (QPNP_WLED_MOD_EN_REG(b, n) + 0x08) |
| 141 | #define QPNP_WLED_SINK_TEST5_REG(b) (b + 0xE6) |
| 142 | |
| 143 | #define QPNP_WLED_MOD_FREQ_1200_KHZ 1200 |
| 144 | #define QPNP_WLED_MOD_FREQ_2400_KHZ 2400 |
| 145 | #define QPNP_WLED_MOD_FREQ_9600_KHZ 9600 |
| 146 | #define QPNP_WLED_MOD_FREQ_19200_KHZ 19200 |
| 147 | #define QPNP_WLED_MOD_FREQ_MASK 0x3F |
| 148 | #define QPNP_WLED_MOD_FREQ_SHIFT 6 |
| 149 | #define QPNP_WLED_ACC_CLK_FREQ_MASK 0xE7 |
| 150 | #define QPNP_WLED_ACC_CLK_FREQ_SHIFT 3 |
| 151 | #define QPNP_WLED_PHASE_STAG_MASK 0xDF |
| 152 | #define QPNP_WLED_PHASE_STAG_SHIFT 5 |
| 153 | #define QPNP_WLED_DIM_RES_MASK 0xFD |
| 154 | #define QPNP_WLED_DIM_RES_SHIFT 1 |
| 155 | #define QPNP_WLED_DIM_HYB_MASK 0xFB |
| 156 | #define QPNP_WLED_DIM_HYB_SHIFT 2 |
| 157 | #define QPNP_WLED_DIM_ANA_MASK 0xFE |
| 158 | #define QPNP_WLED_HYB_THRES_MASK 0xF8 |
| 159 | #define QPNP_WLED_HYB_THRES_MIN 78 |
| 160 | #define QPNP_WLED_DEF_HYB_THRES 625 |
| 161 | #define QPNP_WLED_HYB_THRES_MAX 10000 |
| 162 | #define QPNP_WLED_MOD_EN_MASK 0x7F |
| 163 | #define QPNP_WLED_MOD_EN_SHFT 7 |
| 164 | #define QPNP_WLED_MOD_EN 1 |
| 165 | #define QPNP_WLED_GATE_DRV_MASK 0xFE |
Anirudh Ghayal | 101e4ef | 2017-05-26 16:51:53 +0530 | [diff] [blame] | 166 | #define QPNP_WLED_SYNC_DLY_MASK GENMASK(2, 0) |
David Collins | 8885f79 | 2017-01-26 14:36:34 -0800 | [diff] [blame] | 167 | #define QPNP_WLED_SYNC_DLY_MIN_US 0 |
| 168 | #define QPNP_WLED_SYNC_DLY_MAX_US 1400 |
| 169 | #define QPNP_WLED_SYNC_DLY_STEP_US 200 |
| 170 | #define QPNP_WLED_DEF_SYNC_DLY_US 400 |
Anirudh Ghayal | 101e4ef | 2017-05-26 16:51:53 +0530 | [diff] [blame] | 171 | #define QPNP_WLED_FS_CURR_MASK GENMASK(3, 0) |
David Collins | 8885f79 | 2017-01-26 14:36:34 -0800 | [diff] [blame] | 172 | #define QPNP_WLED_FS_CURR_MIN_UA 0 |
| 173 | #define QPNP_WLED_FS_CURR_MAX_UA 30000 |
| 174 | #define QPNP_WLED_FS_CURR_STEP_UA 2500 |
Anirudh Ghayal | 101e4ef | 2017-05-26 16:51:53 +0530 | [diff] [blame] | 175 | #define QPNP_WLED_CABC_MASK 0x80 |
David Collins | 8885f79 | 2017-01-26 14:36:34 -0800 | [diff] [blame] | 176 | #define QPNP_WLED_CABC_SHIFT 7 |
| 177 | #define QPNP_WLED_CURR_SINK_SHIFT 4 |
Anirudh Ghayal | 101e4ef | 2017-05-26 16:51:53 +0530 | [diff] [blame] | 178 | #define QPNP_WLED_CURR_SINK_MASK GENMASK(7, 4) |
David Collins | 8885f79 | 2017-01-26 14:36:34 -0800 | [diff] [blame] | 179 | #define QPNP_WLED_BRIGHT_LSB_MASK 0xFF |
| 180 | #define QPNP_WLED_BRIGHT_MSB_SHIFT 8 |
| 181 | #define QPNP_WLED_BRIGHT_MSB_MASK 0x0F |
| 182 | #define QPNP_WLED_SYNC 0x0F |
| 183 | #define QPNP_WLED_SYNC_RESET 0x00 |
| 184 | |
| 185 | #define QPNP_WLED_SINK_TEST5_HYB 0x14 |
| 186 | #define QPNP_WLED_SINK_TEST5_DIG 0x1E |
| 187 | #define QPNP_WLED_SINK_TEST5_HVG_PULL_STR_BIT BIT(3) |
| 188 | |
| 189 | #define QPNP_WLED_SWITCH_FREQ_800_KHZ_CODE 0x0B |
| 190 | #define QPNP_WLED_SWITCH_FREQ_1600_KHZ_CODE 0x05 |
| 191 | |
| 192 | #define QPNP_WLED_DISP_SEL_REG(b) (b + 0x44) |
| 193 | #define QPNP_WLED_MODULE_RDY_REG(b) (b + 0x45) |
| 194 | #define QPNP_WLED_MODULE_EN_REG(b) (b + 0x46) |
| 195 | #define QPNP_WLED_MODULE_RDY_MASK 0x7F |
| 196 | #define QPNP_WLED_MODULE_RDY_SHIFT 7 |
| 197 | #define QPNP_WLED_MODULE_EN_MASK BIT(7) |
| 198 | #define QPNP_WLED_MODULE_EN_SHIFT 7 |
| 199 | #define QPNP_WLED_DISP_SEL_MASK 0x7F |
| 200 | #define QPNP_WLED_DISP_SEL_SHIFT 7 |
| 201 | #define QPNP_WLED_EN_SC_DEB_CYCLES_MASK 0x79 |
| 202 | #define QPNP_WLED_EN_DEB_CYCLES_MASK 0xF9 |
| 203 | #define QPNP_WLED_EN_SC_SHIFT 7 |
| 204 | #define QPNP_WLED_SC_PRO_EN_DSCHGR 0x8 |
| 205 | #define QPNP_WLED_SC_DEB_CYCLES_MIN 2 |
| 206 | #define QPNP_WLED_SC_DEB_CYCLES_MAX 16 |
| 207 | #define QPNP_WLED_SC_DEB_CYCLES_SUB 2 |
| 208 | #define QPNP_WLED_SC_DEB_CYCLES_DFLT 4 |
| 209 | #define QPNP_WLED_EXT_FET_DTEST2 0x09 |
| 210 | |
| 211 | #define QPNP_WLED_SEC_ACCESS_REG(b) (b + 0xD0) |
| 212 | #define QPNP_WLED_SEC_UNLOCK 0xA5 |
| 213 | |
Subbaraman Narayanamurthy | dd68761 | 2017-12-05 17:36:43 -0800 | [diff] [blame] | 214 | #define NUM_DDIC_CODES 256 |
David Collins | 8885f79 | 2017-01-26 14:36:34 -0800 | [diff] [blame] | 215 | #define QPNP_WLED_MAX_STRINGS 4 |
Anirudh Ghayal | 101e4ef | 2017-05-26 16:51:53 +0530 | [diff] [blame] | 216 | #define QPNP_PM660_WLED_MAX_STRINGS 3 |
David Collins | 8885f79 | 2017-01-26 14:36:34 -0800 | [diff] [blame] | 217 | #define WLED_MAX_LEVEL_4095 4095 |
| 218 | #define QPNP_WLED_RAMP_DLY_MS 20 |
| 219 | #define QPNP_WLED_TRIGGER_NONE "none" |
| 220 | #define QPNP_WLED_STR_SIZE 20 |
| 221 | #define QPNP_WLED_MIN_MSLEEP 20 |
| 222 | #define QPNP_WLED_SC_DLY_MS 20 |
Anirudh Ghayal | 101e4ef | 2017-05-26 16:51:53 +0530 | [diff] [blame] | 223 | #define QPNP_WLED_SOFT_START_DLY_US 10000 |
David Collins | 8885f79 | 2017-01-26 14:36:34 -0800 | [diff] [blame] | 224 | |
| 225 | #define NUM_SUPPORTED_AVDD_VOLTAGES 6 |
| 226 | #define QPNP_WLED_DFLT_AVDD_MV 7600 |
| 227 | #define QPNP_WLED_AVDD_MIN_MV 5650 |
| 228 | #define QPNP_WLED_AVDD_MAX_MV 7900 |
| 229 | #define QPNP_WLED_AVDD_STEP_MV 150 |
| 230 | #define QPNP_WLED_AVDD_MIN_TRIM_VAL 0x0 |
| 231 | #define QPNP_WLED_AVDD_MAX_TRIM_VAL 0xF |
| 232 | #define QPNP_WLED_AVDD_SEL_SPMI_BIT BIT(7) |
| 233 | #define QPNP_WLED_AVDD_SET_BIT BIT(4) |
| 234 | |
| 235 | #define NUM_SUPPORTED_OVP_THRESHOLDS 4 |
| 236 | #define NUM_SUPPORTED_ILIM_THRESHOLDS 8 |
| 237 | |
| 238 | #define QPNP_WLED_AVDD_MV_TO_REG(val) \ |
| 239 | ((val - QPNP_WLED_AVDD_MIN_MV) / QPNP_WLED_AVDD_STEP_MV) |
| 240 | |
| 241 | /* output feedback mode */ |
| 242 | enum qpnp_wled_fdbk_op { |
| 243 | QPNP_WLED_FDBK_AUTO, |
| 244 | QPNP_WLED_FDBK_WLED1, |
| 245 | QPNP_WLED_FDBK_WLED2, |
| 246 | QPNP_WLED_FDBK_WLED3, |
| 247 | QPNP_WLED_FDBK_WLED4, |
| 248 | }; |
| 249 | |
| 250 | /* dimming modes */ |
| 251 | enum qpnp_wled_dim_mode { |
| 252 | QPNP_WLED_DIM_ANALOG, |
| 253 | QPNP_WLED_DIM_DIGITAL, |
| 254 | QPNP_WLED_DIM_HYBRID, |
| 255 | }; |
| 256 | |
| 257 | /* wled ctrl debug registers */ |
| 258 | static u8 qpnp_wled_ctrl_dbg_regs[] = { |
| 259 | 0x44, 0x46, 0x48, 0x49, 0x4b, 0x4c, 0x4d, 0x4e, 0x50, 0x51, 0x52, 0x53, |
| 260 | 0x54, 0x55, 0x56, 0x57, 0x58, 0x5a, 0x5b, 0x5d, 0x5e, 0xe2 |
| 261 | }; |
| 262 | |
| 263 | /* wled sink debug registers */ |
| 264 | static u8 qpnp_wled_sink_dbg_regs[] = { |
| 265 | 0x46, 0x47, 0x48, 0x4a, 0x4b, |
| 266 | 0x50, 0x51, 0x52, 0x53, 0x56, 0x57, 0x58, |
| 267 | 0x60, 0x61, 0x62, 0x63, 0x66, 0x67, 0x68, |
| 268 | 0x70, 0x71, 0x72, 0x73, 0x76, 0x77, 0x78, |
| 269 | 0x80, 0x81, 0x82, 0x83, 0x86, 0x87, 0x88, |
| 270 | 0xe6, |
| 271 | }; |
| 272 | |
| 273 | static int qpnp_wled_avdd_target_voltages[NUM_SUPPORTED_AVDD_VOLTAGES] = { |
| 274 | 7900, 7600, 7300, 6400, 6100, 5800, |
| 275 | }; |
| 276 | |
| 277 | static u8 qpnp_wled_ovp_reg_settings[NUM_SUPPORTED_AVDD_VOLTAGES] = { |
| 278 | 0x0, 0x0, 0x1, 0x2, 0x2, 0x3, |
| 279 | }; |
| 280 | |
| 281 | static int qpnp_wled_avdd_trim_adjustments[NUM_SUPPORTED_AVDD_VOLTAGES] = { |
| 282 | 3, 0, -2, 7, 3, 3, |
| 283 | }; |
| 284 | |
| 285 | static int qpnp_wled_ovp_thresholds_pmi8994[NUM_SUPPORTED_OVP_THRESHOLDS] = { |
| 286 | 31000, 29500, 19400, 17800, |
| 287 | }; |
| 288 | |
| 289 | static int qpnp_wled_ovp_thresholds_pmi8998[NUM_SUPPORTED_OVP_THRESHOLDS] = { |
| 290 | 31100, 29600, 19600, 18100, |
| 291 | }; |
| 292 | |
| 293 | static int qpnp_wled_ilim_settings_pmi8994[NUM_SUPPORTED_ILIM_THRESHOLDS] = { |
| 294 | 105, 385, 660, 980, 1150, 1420, 1700, 1980, |
| 295 | }; |
| 296 | |
| 297 | static int qpnp_wled_ilim_settings_pmi8998[NUM_SUPPORTED_ILIM_THRESHOLDS] = { |
| 298 | 105, 280, 450, 620, 970, 1150, 1300, 1500, |
| 299 | }; |
| 300 | |
| 301 | struct wled_vref_setting { |
| 302 | u32 min_uv; |
| 303 | u32 max_uv; |
| 304 | u32 step_uv; |
| 305 | u32 default_uv; |
| 306 | }; |
| 307 | |
| 308 | static struct wled_vref_setting vref_setting_pmi8994 = { |
| 309 | 300000, 675000, 25000, 350000, |
| 310 | }; |
| 311 | static struct wled_vref_setting vref_setting_pmi8998 = { |
| 312 | 60000, 397500, 22500, 127500, |
| 313 | }; |
| 314 | |
| 315 | /** |
| 316 | * qpnp_wled - wed data structure |
| 317 | * @ cdev - led class device |
| 318 | * @ pdev - platform device |
| 319 | * @ work - worker for led operation |
Subbaraman Narayanamurthy | 3c68f42 | 2017-09-11 20:01:27 -0700 | [diff] [blame] | 320 | * @ wq - workqueue for setting brightness level |
David Collins | 8885f79 | 2017-01-26 14:36:34 -0800 | [diff] [blame] | 321 | * @ lock - mutex lock for exclusive access |
| 322 | * @ fdbk_op - output feedback mode |
| 323 | * @ dim_mode - dimming mode |
| 324 | * @ ovp_irq - over voltage protection irq |
| 325 | * @ sc_irq - short circuit irq |
| 326 | * @ sc_cnt - short circuit irq count |
| 327 | * @ avdd_target_voltage_mv - target voltage for AVDD module in mV |
| 328 | * @ ctrl_base - base address for wled ctrl |
| 329 | * @ sink_base - base address for wled sink |
| 330 | * @ mod_freq_khz - modulator frequency in KHZ |
| 331 | * @ hyb_thres - threshold for hybrid dimming |
| 332 | * @ sync_dly_us - sync delay in us |
| 333 | * @ vref_uv - ref voltage in uv |
| 334 | * @ vref_psm_mv - ref psm voltage in mv |
| 335 | * @ loop_comp_res_kohm - control to select the compensation resistor |
| 336 | * @ loop_ea_gm - control to select the gm for the gm stage in control loop |
| 337 | * @ sc_deb_cycles - debounce time for short circuit detection |
| 338 | * @ switch_freq_khz - switching frequency in KHZ |
| 339 | * @ ovp_mv - over voltage protection in mv |
| 340 | * @ ilim_ma - current limiter in ma |
| 341 | * @ boost_duty_ns - boost duty cycle in ns |
| 342 | * @ fs_curr_ua - full scale current in ua |
| 343 | * @ ramp_ms - delay between ramp steps in ms |
| 344 | * @ ramp_step - ramp step size |
| 345 | * @ cons_sync_write_delay_us - delay between two consecutive writes to SYNC |
Subbaraman Narayanamurthy | dd68761 | 2017-12-05 17:36:43 -0800 | [diff] [blame] | 346 | * @ auto_calibration_ovp_count - OVP fault irq count to run auto calibration |
| 347 | * @ max_strings - Number of strings supported in WLED peripheral |
| 348 | * @ prev_level - Previous brightness level |
| 349 | * @ brt_map_table - Brightness map table |
David Collins | 8885f79 | 2017-01-26 14:36:34 -0800 | [diff] [blame] | 350 | * @ strings - supported list of strings |
| 351 | * @ num_strings - number of strings |
| 352 | * @ loop_auto_gm_thresh - the clamping level for auto gm |
| 353 | * @ lcd_auto_pfm_thresh - the threshold for lcd auto pfm mode |
| 354 | * @ loop_auto_gm_en - select if auto gm is enabled |
| 355 | * @ lcd_auto_pfm_en - select if auto pfm is enabled in lcd mode |
Subbaraman Narayanamurthy | 5569884 | 2017-02-17 15:48:47 -0800 | [diff] [blame] | 356 | * @ lcd_psm_ctrl - select if psm needs to be controlled in lcd mode |
David Collins | 8885f79 | 2017-01-26 14:36:34 -0800 | [diff] [blame] | 357 | * @ avdd_mode_spmi - enable avdd programming via spmi |
| 358 | * @ en_9b_dim_res - enable or disable 9bit dimming |
| 359 | * @ en_phase_stag - enable or disable phase staggering |
| 360 | * @ en_cabc - enable or disable cabc |
| 361 | * @ disp_type_amoled - type of display: LCD/AMOLED |
| 362 | * @ en_ext_pfet_sc_pro - enable sc protection on external pfet |
Subbaraman Narayanamurthy | dd68761 | 2017-12-05 17:36:43 -0800 | [diff] [blame] | 363 | * @ prev_state - previous state of WLED |
Subbaraman Narayanamurthy | 3c68f42 | 2017-09-11 20:01:27 -0700 | [diff] [blame] | 364 | * @ stepper_en - Flag to enable stepper algorithm |
Subbaraman Narayanamurthy | dd68761 | 2017-12-05 17:36:43 -0800 | [diff] [blame] | 365 | * @ ovp_irq_disabled - OVP interrupt disable status |
| 366 | * @ auto_calib_enabled - Flag to enable auto calibration feature |
| 367 | * @ auto_calib_done - Flag to indicate auto calibration is done |
| 368 | * @ module_dis_perm - Flat to keep module permanently disabled |
| 369 | * @ start_ovp_fault_time - Time when the OVP fault first occurred |
David Collins | 8885f79 | 2017-01-26 14:36:34 -0800 | [diff] [blame] | 370 | */ |
| 371 | struct qpnp_wled { |
| 372 | struct led_classdev cdev; |
| 373 | struct platform_device *pdev; |
| 374 | struct regmap *regmap; |
| 375 | struct pmic_revid_data *pmic_rev_id; |
| 376 | struct work_struct work; |
Subbaraman Narayanamurthy | 3c68f42 | 2017-09-11 20:01:27 -0700 | [diff] [blame] | 377 | struct workqueue_struct *wq; |
David Collins | 8885f79 | 2017-01-26 14:36:34 -0800 | [diff] [blame] | 378 | struct mutex lock; |
| 379 | struct mutex bus_lock; |
| 380 | enum qpnp_wled_fdbk_op fdbk_op; |
| 381 | enum qpnp_wled_dim_mode dim_mode; |
| 382 | int ovp_irq; |
| 383 | int sc_irq; |
| 384 | u32 sc_cnt; |
| 385 | u32 avdd_target_voltage_mv; |
| 386 | u16 ctrl_base; |
| 387 | u16 sink_base; |
| 388 | u16 mod_freq_khz; |
| 389 | u16 hyb_thres; |
| 390 | u16 sync_dly_us; |
| 391 | u32 vref_uv; |
| 392 | u16 vref_psm_mv; |
| 393 | u16 loop_comp_res_kohm; |
| 394 | u16 loop_ea_gm; |
| 395 | u16 sc_deb_cycles; |
| 396 | u16 switch_freq_khz; |
| 397 | u16 ovp_mv; |
| 398 | u16 ilim_ma; |
| 399 | u16 boost_duty_ns; |
| 400 | u16 fs_curr_ua; |
| 401 | u16 ramp_ms; |
| 402 | u16 ramp_step; |
| 403 | u16 cons_sync_write_delay_us; |
Anirudh Ghayal | 101e4ef | 2017-05-26 16:51:53 +0530 | [diff] [blame] | 404 | u16 auto_calibration_ovp_count; |
| 405 | u16 max_strings; |
Subbaraman Narayanamurthy | dd68761 | 2017-12-05 17:36:43 -0800 | [diff] [blame] | 406 | u16 prev_level; |
| 407 | u16 *brt_map_table; |
David Collins | 8885f79 | 2017-01-26 14:36:34 -0800 | [diff] [blame] | 408 | u8 strings[QPNP_WLED_MAX_STRINGS]; |
| 409 | u8 num_strings; |
| 410 | u8 loop_auto_gm_thresh; |
| 411 | u8 lcd_auto_pfm_thresh; |
| 412 | bool loop_auto_gm_en; |
| 413 | bool lcd_auto_pfm_en; |
Subbaraman Narayanamurthy | 5569884 | 2017-02-17 15:48:47 -0800 | [diff] [blame] | 414 | bool lcd_psm_ctrl; |
David Collins | 8885f79 | 2017-01-26 14:36:34 -0800 | [diff] [blame] | 415 | bool avdd_mode_spmi; |
| 416 | bool en_9b_dim_res; |
| 417 | bool en_phase_stag; |
| 418 | bool en_cabc; |
| 419 | bool disp_type_amoled; |
| 420 | bool en_ext_pfet_sc_pro; |
| 421 | bool prev_state; |
Subbaraman Narayanamurthy | 3c68f42 | 2017-09-11 20:01:27 -0700 | [diff] [blame] | 422 | bool stepper_en; |
David Collins | 8885f79 | 2017-01-26 14:36:34 -0800 | [diff] [blame] | 423 | bool ovp_irq_disabled; |
Kiran Gunda | e464871 | 2018-07-19 15:02:59 +0530 | [diff] [blame] | 424 | bool secure_mode; |
Anirudh Ghayal | 101e4ef | 2017-05-26 16:51:53 +0530 | [diff] [blame] | 425 | bool auto_calib_enabled; |
| 426 | bool auto_calib_done; |
Subbaraman Narayanamurthy | 15624d9 | 2017-10-12 21:04:30 -0700 | [diff] [blame] | 427 | bool module_dis_perm; |
Anirudh Ghayal | 101e4ef | 2017-05-26 16:51:53 +0530 | [diff] [blame] | 428 | ktime_t start_ovp_fault_time; |
David Collins | 8885f79 | 2017-01-26 14:36:34 -0800 | [diff] [blame] | 429 | }; |
| 430 | |
Subbaraman Narayanamurthy | 3c68f42 | 2017-09-11 20:01:27 -0700 | [diff] [blame] | 431 | static int qpnp_wled_step_delay_us = 52000; |
| 432 | module_param_named( |
| 433 | total_step_delay_us, qpnp_wled_step_delay_us, int, 0600 |
| 434 | ); |
| 435 | |
| 436 | static int qpnp_wled_step_size_threshold = 3; |
| 437 | module_param_named( |
| 438 | step_size_threshold, qpnp_wled_step_size_threshold, int, 0600 |
| 439 | ); |
| 440 | |
| 441 | static int qpnp_wled_step_delay_gain = 2; |
| 442 | module_param_named( |
| 443 | step_delay_gain, qpnp_wled_step_delay_gain, int, 0600 |
| 444 | ); |
| 445 | |
David Collins | 8885f79 | 2017-01-26 14:36:34 -0800 | [diff] [blame] | 446 | /* helper to read a pmic register */ |
| 447 | static int qpnp_wled_read_reg(struct qpnp_wled *wled, u16 addr, u8 *data) |
| 448 | { |
| 449 | int rc; |
| 450 | uint val; |
| 451 | |
| 452 | rc = regmap_read(wled->regmap, addr, &val); |
| 453 | if (rc < 0) { |
| 454 | dev_err(&wled->pdev->dev, |
| 455 | "Error reading address: %x(%d)\n", addr, rc); |
| 456 | return rc; |
| 457 | } |
| 458 | |
| 459 | *data = (u8)val; |
| 460 | return 0; |
| 461 | } |
| 462 | |
| 463 | /* helper to write a pmic register */ |
| 464 | static int qpnp_wled_write_reg(struct qpnp_wled *wled, u16 addr, u8 data) |
| 465 | { |
| 466 | int rc; |
| 467 | |
| 468 | mutex_lock(&wled->bus_lock); |
| 469 | rc = regmap_write(wled->regmap, addr, data); |
| 470 | if (rc < 0) { |
| 471 | dev_err(&wled->pdev->dev, "Error writing address: %x(%d)\n", |
| 472 | addr, rc); |
| 473 | goto out; |
| 474 | } |
| 475 | |
| 476 | dev_dbg(&wled->pdev->dev, "wrote: WLED_0x%x = 0x%x\n", addr, data); |
| 477 | out: |
| 478 | mutex_unlock(&wled->bus_lock); |
| 479 | return rc; |
| 480 | } |
| 481 | |
| 482 | static int qpnp_wled_masked_write_reg(struct qpnp_wled *wled, u16 addr, |
| 483 | u8 mask, u8 data) |
| 484 | { |
| 485 | int rc; |
| 486 | |
| 487 | mutex_lock(&wled->bus_lock); |
| 488 | rc = regmap_update_bits(wled->regmap, addr, mask, data); |
| 489 | if (rc < 0) { |
| 490 | dev_err(&wled->pdev->dev, "Error writing address: %x(%d)\n", |
| 491 | addr, rc); |
| 492 | goto out; |
| 493 | } |
| 494 | |
| 495 | dev_dbg(&wled->pdev->dev, "wrote: WLED_0x%x = 0x%x\n", addr, data); |
| 496 | out: |
| 497 | mutex_unlock(&wled->bus_lock); |
| 498 | return rc; |
| 499 | } |
| 500 | |
| 501 | static int qpnp_wled_sec_write_reg(struct qpnp_wled *wled, u16 addr, u8 data) |
| 502 | { |
| 503 | int rc; |
| 504 | u8 reg = QPNP_WLED_SEC_UNLOCK; |
| 505 | u16 base_addr = addr & 0xFF00; |
| 506 | |
| 507 | mutex_lock(&wled->bus_lock); |
| 508 | rc = regmap_write(wled->regmap, QPNP_WLED_SEC_ACCESS_REG(base_addr), |
| 509 | reg); |
| 510 | if (rc < 0) { |
| 511 | dev_err(&wled->pdev->dev, "Error writing address: %x(%d)\n", |
| 512 | QPNP_WLED_SEC_ACCESS_REG(base_addr), rc); |
| 513 | goto out; |
| 514 | } |
| 515 | |
| 516 | rc = regmap_write(wled->regmap, addr, data); |
| 517 | if (rc < 0) { |
| 518 | dev_err(&wled->pdev->dev, "Error writing address: %x(%d)\n", |
| 519 | addr, rc); |
| 520 | goto out; |
| 521 | } |
| 522 | |
| 523 | dev_dbg(&wled->pdev->dev, "wrote: WLED_0x%x = 0x%x\n", addr, data); |
| 524 | out: |
| 525 | mutex_unlock(&wled->bus_lock); |
| 526 | return rc; |
| 527 | } |
| 528 | |
| 529 | static int qpnp_wled_swire_avdd_config(struct qpnp_wled *wled) |
| 530 | { |
| 531 | int rc; |
| 532 | u8 val; |
| 533 | |
| 534 | if (wled->pmic_rev_id->pmic_subtype != PMI8998_SUBTYPE && |
| 535 | wled->pmic_rev_id->pmic_subtype != PM660L_SUBTYPE) |
| 536 | return 0; |
| 537 | |
| 538 | if (!wled->disp_type_amoled || wled->avdd_mode_spmi) |
| 539 | return 0; |
| 540 | |
| 541 | val = QPNP_WLED_AVDD_MV_TO_REG(wled->avdd_target_voltage_mv); |
| 542 | rc = qpnp_wled_write_reg(wled, |
| 543 | QPNP_WLED_SWIRE_AVDD_REG(wled->ctrl_base), val); |
| 544 | return rc; |
| 545 | } |
| 546 | |
| 547 | static int qpnp_wled_sync_reg_toggle(struct qpnp_wled *wled) |
| 548 | { |
| 549 | int rc; |
| 550 | u8 reg; |
| 551 | |
| 552 | /* sync */ |
| 553 | reg = QPNP_WLED_SYNC; |
| 554 | rc = qpnp_wled_write_reg(wled, QPNP_WLED_SYNC_REG(wled->sink_base), |
| 555 | reg); |
| 556 | if (rc < 0) |
| 557 | return rc; |
| 558 | |
| 559 | if (wled->cons_sync_write_delay_us) |
| 560 | usleep_range(wled->cons_sync_write_delay_us, |
| 561 | wled->cons_sync_write_delay_us + 1); |
| 562 | |
| 563 | reg = QPNP_WLED_SYNC_RESET; |
| 564 | rc = qpnp_wled_write_reg(wled, QPNP_WLED_SYNC_REG(wled->sink_base), |
| 565 | reg); |
| 566 | if (rc < 0) |
| 567 | return rc; |
| 568 | |
| 569 | return 0; |
| 570 | } |
| 571 | |
| 572 | /* set wled to a level of brightness */ |
| 573 | static int qpnp_wled_set_level(struct qpnp_wled *wled, int level) |
| 574 | { |
| 575 | int i, rc; |
| 576 | u8 reg; |
Subbaraman Narayanamurthy | cb5b72e | 2017-08-21 19:16:37 -0700 | [diff] [blame] | 577 | u16 low_limit = WLED_MAX_LEVEL_4095 * 4 / 1000; |
| 578 | |
| 579 | /* WLED's lower limit of operation is 0.4% */ |
| 580 | if (level > 0 && level < low_limit) |
| 581 | level = low_limit; |
David Collins | 8885f79 | 2017-01-26 14:36:34 -0800 | [diff] [blame] | 582 | |
| 583 | /* set brightness registers */ |
Anirudh Ghayal | 101e4ef | 2017-05-26 16:51:53 +0530 | [diff] [blame] | 584 | for (i = 0; i < wled->max_strings; i++) { |
David Collins | 8885f79 | 2017-01-26 14:36:34 -0800 | [diff] [blame] | 585 | reg = level & QPNP_WLED_BRIGHT_LSB_MASK; |
| 586 | rc = qpnp_wled_write_reg(wled, |
| 587 | QPNP_WLED_BRIGHT_LSB_REG(wled->sink_base, |
| 588 | wled->strings[i]), reg); |
| 589 | if (rc < 0) |
| 590 | return rc; |
| 591 | |
| 592 | reg = level >> QPNP_WLED_BRIGHT_MSB_SHIFT; |
| 593 | reg = reg & QPNP_WLED_BRIGHT_MSB_MASK; |
| 594 | rc = qpnp_wled_write_reg(wled, |
| 595 | QPNP_WLED_BRIGHT_MSB_REG(wled->sink_base, |
| 596 | wled->strings[i]), reg); |
| 597 | if (rc < 0) |
| 598 | return rc; |
| 599 | } |
| 600 | |
| 601 | rc = qpnp_wled_sync_reg_toggle(wled); |
| 602 | if (rc < 0) { |
| 603 | dev_err(&wled->pdev->dev, "Failed to toggle sync reg %d\n", rc); |
| 604 | return rc; |
| 605 | } |
| 606 | |
Subbaraman Narayanamurthy | 3c68f42 | 2017-09-11 20:01:27 -0700 | [diff] [blame] | 607 | pr_debug("level:%d\n", level); |
David Collins | 8885f79 | 2017-01-26 14:36:34 -0800 | [diff] [blame] | 608 | return 0; |
| 609 | } |
| 610 | |
Subbaraman Narayanamurthy | dd68761 | 2017-12-05 17:36:43 -0800 | [diff] [blame] | 611 | static int qpnp_wled_set_map_level(struct qpnp_wled *wled, int level) |
| 612 | { |
| 613 | int rc, i; |
| 614 | |
| 615 | if (level < wled->prev_level) { |
| 616 | for (i = wled->prev_level; i >= level; i--) { |
| 617 | rc = qpnp_wled_set_level(wled, wled->brt_map_table[i]); |
| 618 | if (rc < 0) { |
| 619 | pr_err("set brightness level failed, rc:%d\n", |
| 620 | rc); |
| 621 | return rc; |
| 622 | } |
| 623 | } |
| 624 | } else if (level > wled->prev_level) { |
| 625 | for (i = wled->prev_level; i <= level; i++) { |
| 626 | rc = qpnp_wled_set_level(wled, wled->brt_map_table[i]); |
| 627 | if (rc < 0) { |
| 628 | pr_err("set brightness level failed, rc:%d\n", |
| 629 | rc); |
| 630 | return rc; |
| 631 | } |
| 632 | } |
| 633 | } |
| 634 | |
| 635 | return 0; |
| 636 | } |
| 637 | |
Subbaraman Narayanamurthy | 3c68f42 | 2017-09-11 20:01:27 -0700 | [diff] [blame] | 638 | static int qpnp_wled_set_step_level(struct qpnp_wled *wled, int new_level) |
| 639 | { |
| 640 | int rc, i, num_steps, delay_us; |
| 641 | u16 level, start_level, end_level, step_size; |
| 642 | bool level_inc = false; |
| 643 | |
| 644 | level = wled->prev_level; |
| 645 | start_level = wled->brt_map_table[level]; |
| 646 | end_level = wled->brt_map_table[new_level]; |
| 647 | level_inc = (new_level > level); |
| 648 | |
| 649 | num_steps = abs(start_level - end_level); |
| 650 | if (!num_steps) |
| 651 | return 0; |
| 652 | |
| 653 | delay_us = qpnp_wled_step_delay_us / num_steps; |
| 654 | pr_debug("level goes from [%d %d] num_steps: %d, delay: %d\n", |
| 655 | start_level, end_level, num_steps, delay_us); |
| 656 | |
| 657 | if (delay_us < 500) { |
| 658 | step_size = 1000 / delay_us; |
| 659 | num_steps = num_steps / step_size; |
| 660 | delay_us = 1000; |
| 661 | } else { |
| 662 | if (num_steps < qpnp_wled_step_size_threshold) |
| 663 | delay_us *= qpnp_wled_step_delay_gain; |
| 664 | |
| 665 | step_size = 1; |
| 666 | } |
| 667 | |
| 668 | i = start_level; |
| 669 | while (num_steps--) { |
| 670 | if (level_inc) |
| 671 | i += step_size; |
| 672 | else |
| 673 | i -= step_size; |
| 674 | |
| 675 | rc = qpnp_wled_set_level(wled, i); |
| 676 | if (rc < 0) |
| 677 | return rc; |
| 678 | |
| 679 | if (delay_us > 0) { |
| 680 | if (delay_us < 20000) |
| 681 | usleep_range(delay_us, delay_us + 1); |
| 682 | else |
| 683 | msleep(delay_us / USEC_PER_MSEC); |
| 684 | } |
| 685 | } |
| 686 | |
| 687 | if (i != end_level) { |
| 688 | i = end_level; |
| 689 | rc = qpnp_wled_set_level(wled, i); |
| 690 | if (rc < 0) |
| 691 | return rc; |
| 692 | } |
| 693 | |
| 694 | return 0; |
| 695 | } |
| 696 | |
Subbaraman Narayanamurthy | 5569884 | 2017-02-17 15:48:47 -0800 | [diff] [blame] | 697 | static int qpnp_wled_psm_config(struct qpnp_wled *wled, bool enable) |
| 698 | { |
| 699 | int rc; |
| 700 | |
| 701 | if (!wled->lcd_psm_ctrl) |
| 702 | return 0; |
| 703 | |
| 704 | rc = qpnp_wled_masked_write_reg(wled, |
| 705 | QPNP_WLED_EN_PSM_REG(wled->ctrl_base), |
| 706 | QPNP_WLED_EN_PSM_BIT, |
| 707 | enable ? QPNP_WLED_EN_PSM_BIT : 0); |
| 708 | if (rc < 0) |
| 709 | return rc; |
| 710 | |
| 711 | rc = qpnp_wled_masked_write_reg(wled, |
| 712 | QPNP_WLED_PSM_CTRL_REG(wled->ctrl_base), |
| 713 | QPNP_WLED_PSM_OVERWRITE_BIT, |
| 714 | enable ? QPNP_WLED_PSM_OVERWRITE_BIT : 0); |
| 715 | if (rc < 0) |
| 716 | return rc; |
| 717 | |
| 718 | return 0; |
| 719 | } |
| 720 | |
David Collins | 8885f79 | 2017-01-26 14:36:34 -0800 | [diff] [blame] | 721 | static int qpnp_wled_module_en(struct qpnp_wled *wled, |
| 722 | u16 base_addr, bool state) |
| 723 | { |
| 724 | int rc; |
| 725 | |
Subbaraman Narayanamurthy | 15624d9 | 2017-10-12 21:04:30 -0700 | [diff] [blame] | 726 | if (wled->module_dis_perm) |
| 727 | return 0; |
| 728 | |
David Collins | 8885f79 | 2017-01-26 14:36:34 -0800 | [diff] [blame] | 729 | rc = qpnp_wled_masked_write_reg(wled, |
| 730 | QPNP_WLED_MODULE_EN_REG(base_addr), |
| 731 | QPNP_WLED_MODULE_EN_MASK, |
| 732 | state << QPNP_WLED_MODULE_EN_SHIFT); |
| 733 | if (rc < 0) |
| 734 | return rc; |
| 735 | |
Subbaraman Narayanamurthy | 5569884 | 2017-02-17 15:48:47 -0800 | [diff] [blame] | 736 | /* |
| 737 | * Wait for at least 10ms before enabling OVP fault interrupt after |
| 738 | * enabling the module so that soft start is completed. Also, this |
| 739 | * delay can be used to control PSM during enable when required. Keep |
| 740 | * OVP interrupt disabled when the module is disabled. |
| 741 | */ |
| 742 | if (state) { |
Anirudh Ghayal | 101e4ef | 2017-05-26 16:51:53 +0530 | [diff] [blame] | 743 | usleep_range(QPNP_WLED_SOFT_START_DLY_US, |
| 744 | QPNP_WLED_SOFT_START_DLY_US + 1000); |
Subbaraman Narayanamurthy | 5569884 | 2017-02-17 15:48:47 -0800 | [diff] [blame] | 745 | rc = qpnp_wled_psm_config(wled, false); |
| 746 | if (rc < 0) |
| 747 | return rc; |
| 748 | |
| 749 | if (wled->ovp_irq > 0 && wled->ovp_irq_disabled) { |
David Collins | 8885f79 | 2017-01-26 14:36:34 -0800 | [diff] [blame] | 750 | enable_irq(wled->ovp_irq); |
| 751 | wled->ovp_irq_disabled = false; |
Subbaraman Narayanamurthy | 5569884 | 2017-02-17 15:48:47 -0800 | [diff] [blame] | 752 | } |
| 753 | } else { |
| 754 | if (wled->ovp_irq > 0 && !wled->ovp_irq_disabled) { |
David Collins | 8885f79 | 2017-01-26 14:36:34 -0800 | [diff] [blame] | 755 | disable_irq(wled->ovp_irq); |
| 756 | wled->ovp_irq_disabled = true; |
| 757 | } |
Subbaraman Narayanamurthy | 5569884 | 2017-02-17 15:48:47 -0800 | [diff] [blame] | 758 | |
| 759 | rc = qpnp_wled_psm_config(wled, true); |
| 760 | if (rc < 0) |
| 761 | return rc; |
David Collins | 8885f79 | 2017-01-26 14:36:34 -0800 | [diff] [blame] | 762 | } |
| 763 | |
| 764 | return 0; |
| 765 | } |
| 766 | |
| 767 | /* sysfs store function for ramp */ |
| 768 | static ssize_t qpnp_wled_ramp_store(struct device *dev, |
| 769 | struct device_attribute *attr, const char *buf, size_t count) |
| 770 | { |
| 771 | struct qpnp_wled *wled = dev_get_drvdata(dev); |
| 772 | int i, rc; |
| 773 | |
| 774 | mutex_lock(&wled->lock); |
| 775 | |
| 776 | if (!wled->cdev.brightness) { |
| 777 | rc = qpnp_wled_module_en(wled, wled->ctrl_base, true); |
| 778 | if (rc) { |
| 779 | dev_err(&wled->pdev->dev, "wled enable failed\n"); |
| 780 | goto unlock_mutex; |
| 781 | } |
| 782 | } |
| 783 | |
| 784 | /* ramp up */ |
| 785 | for (i = 0; i <= wled->cdev.max_brightness;) { |
| 786 | rc = qpnp_wled_set_level(wled, i); |
| 787 | if (rc) { |
| 788 | dev_err(&wled->pdev->dev, "wled set level failed\n"); |
| 789 | goto restore_brightness; |
| 790 | } |
| 791 | |
| 792 | if (wled->ramp_ms < QPNP_WLED_MIN_MSLEEP) |
| 793 | usleep_range(wled->ramp_ms * USEC_PER_MSEC, |
| 794 | wled->ramp_ms * USEC_PER_MSEC); |
| 795 | else |
| 796 | msleep(wled->ramp_ms); |
| 797 | |
| 798 | if (i == wled->cdev.max_brightness) |
| 799 | break; |
| 800 | |
| 801 | i += wled->ramp_step; |
| 802 | if (i > wled->cdev.max_brightness) |
| 803 | i = wled->cdev.max_brightness; |
| 804 | } |
| 805 | |
| 806 | /* ramp down */ |
| 807 | for (i = wled->cdev.max_brightness; i >= 0;) { |
| 808 | rc = qpnp_wled_set_level(wled, i); |
| 809 | if (rc) { |
| 810 | dev_err(&wled->pdev->dev, "wled set level failed\n"); |
| 811 | goto restore_brightness; |
| 812 | } |
| 813 | |
| 814 | if (wled->ramp_ms < QPNP_WLED_MIN_MSLEEP) |
| 815 | usleep_range(wled->ramp_ms * USEC_PER_MSEC, |
| 816 | wled->ramp_ms * USEC_PER_MSEC); |
| 817 | else |
| 818 | msleep(wled->ramp_ms); |
| 819 | |
| 820 | if (i == 0) |
| 821 | break; |
| 822 | |
| 823 | i -= wled->ramp_step; |
| 824 | if (i < 0) |
| 825 | i = 0; |
| 826 | } |
| 827 | |
| 828 | dev_info(&wled->pdev->dev, "wled ramp complete\n"); |
| 829 | |
| 830 | restore_brightness: |
| 831 | /* restore the old brightness */ |
| 832 | qpnp_wled_set_level(wled, wled->cdev.brightness); |
| 833 | if (!wled->cdev.brightness) { |
| 834 | rc = qpnp_wled_module_en(wled, wled->ctrl_base, false); |
| 835 | if (rc) |
| 836 | dev_err(&wled->pdev->dev, "wled enable failed\n"); |
| 837 | } |
| 838 | unlock_mutex: |
| 839 | mutex_unlock(&wled->lock); |
| 840 | |
| 841 | return count; |
| 842 | } |
| 843 | |
| 844 | static int qpnp_wled_dump_regs(struct qpnp_wled *wled, u16 base_addr, |
| 845 | u8 dbg_regs[], u8 size, char *label, |
| 846 | int count, char *buf) |
| 847 | { |
| 848 | int i, rc; |
| 849 | u8 reg; |
| 850 | |
| 851 | for (i = 0; i < size; i++) { |
| 852 | rc = qpnp_wled_read_reg(wled, base_addr + dbg_regs[i], ®); |
| 853 | if (rc < 0) |
| 854 | return rc; |
| 855 | |
| 856 | count += snprintf(buf + count, PAGE_SIZE - count, |
| 857 | "%s: REG_0x%x = 0x%x\n", label, |
| 858 | base_addr + dbg_regs[i], reg); |
| 859 | |
| 860 | if (count >= PAGE_SIZE) |
| 861 | return PAGE_SIZE - 1; |
| 862 | } |
| 863 | |
| 864 | return count; |
| 865 | } |
| 866 | |
| 867 | /* sysfs show function for debug registers */ |
| 868 | static ssize_t qpnp_wled_dump_regs_show(struct device *dev, |
| 869 | struct device_attribute *attr, char *buf) |
| 870 | { |
| 871 | struct qpnp_wled *wled = dev_get_drvdata(dev); |
| 872 | int count = 0; |
| 873 | |
| 874 | count = qpnp_wled_dump_regs(wled, wled->ctrl_base, |
| 875 | qpnp_wled_ctrl_dbg_regs, |
| 876 | ARRAY_SIZE(qpnp_wled_ctrl_dbg_regs), |
| 877 | "wled_ctrl", count, buf); |
| 878 | |
| 879 | if (count < 0 || count == PAGE_SIZE - 1) |
| 880 | return count; |
| 881 | |
| 882 | count = qpnp_wled_dump_regs(wled, wled->sink_base, |
| 883 | qpnp_wled_sink_dbg_regs, |
| 884 | ARRAY_SIZE(qpnp_wled_sink_dbg_regs), |
| 885 | "wled_sink", count, buf); |
| 886 | |
| 887 | if (count < 0 || count == PAGE_SIZE - 1) |
| 888 | return count; |
| 889 | |
| 890 | return count; |
| 891 | } |
| 892 | |
| 893 | /* sysfs show function for ramp delay in each step */ |
| 894 | static ssize_t qpnp_wled_ramp_ms_show(struct device *dev, |
| 895 | struct device_attribute *attr, char *buf) |
| 896 | { |
| 897 | struct qpnp_wled *wled = dev_get_drvdata(dev); |
| 898 | |
| 899 | return snprintf(buf, PAGE_SIZE, "%d\n", wled->ramp_ms); |
| 900 | } |
| 901 | |
| 902 | /* sysfs store function for ramp delay in each step */ |
| 903 | static ssize_t qpnp_wled_ramp_ms_store(struct device *dev, |
| 904 | struct device_attribute *attr, const char *buf, size_t count) |
| 905 | { |
| 906 | struct qpnp_wled *wled = dev_get_drvdata(dev); |
| 907 | int data, rc; |
| 908 | |
| 909 | rc = kstrtoint(buf, 10, &data); |
| 910 | if (rc) |
| 911 | return rc; |
| 912 | |
| 913 | wled->ramp_ms = data; |
| 914 | return count; |
| 915 | } |
| 916 | |
| 917 | /* sysfs show function for ramp step */ |
| 918 | static ssize_t qpnp_wled_ramp_step_show(struct device *dev, |
| 919 | struct device_attribute *attr, char *buf) |
| 920 | { |
| 921 | struct qpnp_wled *wled = dev_get_drvdata(dev); |
| 922 | |
| 923 | return snprintf(buf, PAGE_SIZE, "%d\n", wled->ramp_step); |
| 924 | } |
| 925 | |
| 926 | /* sysfs store function for ramp step */ |
| 927 | static ssize_t qpnp_wled_ramp_step_store(struct device *dev, |
| 928 | struct device_attribute *attr, const char *buf, size_t count) |
| 929 | { |
| 930 | struct qpnp_wled *wled = dev_get_drvdata(dev); |
| 931 | int data, rc; |
| 932 | |
| 933 | rc = kstrtoint(buf, 10, &data); |
| 934 | if (rc) |
| 935 | return rc; |
| 936 | |
| 937 | wled->ramp_step = data; |
| 938 | return count; |
| 939 | } |
| 940 | |
Kiran Gunda | e464871 | 2018-07-19 15:02:59 +0530 | [diff] [blame] | 941 | /* sysfs function for irqs enable/disable */ |
| 942 | static ssize_t qpnp_wled_irq_control(struct device *dev, |
| 943 | struct device_attribute *attr, |
| 944 | const char *buf, size_t count) |
| 945 | { |
| 946 | struct qpnp_wled *wled = dev_get_drvdata(dev); |
| 947 | int val, rc; |
| 948 | |
| 949 | rc = kstrtouint(buf, 0, &val); |
| 950 | if (rc < 0) |
| 951 | return rc; |
| 952 | |
| 953 | if (val != 0 && val != 1) |
| 954 | return count; |
| 955 | |
| 956 | mutex_lock(&wled->lock); |
| 957 | /* Disable irqs */ |
| 958 | if (val == 1 && !wled->secure_mode) { |
| 959 | if (wled->ovp_irq > 0) |
| 960 | disable_irq(wled->ovp_irq); |
| 961 | |
| 962 | if (wled->sc_irq > 0) |
| 963 | disable_irq(wled->sc_irq); |
| 964 | |
| 965 | wled->secure_mode = true; |
| 966 | } else if (val == 0 && wled->secure_mode) { |
| 967 | if (wled->ovp_irq > 0) |
| 968 | enable_irq(wled->ovp_irq); |
| 969 | |
| 970 | if (wled->sc_irq > 0) |
| 971 | enable_irq(wled->sc_irq); |
| 972 | |
| 973 | wled->secure_mode = false; |
| 974 | } |
| 975 | |
| 976 | mutex_unlock(&wled->lock); |
| 977 | |
| 978 | return count; |
| 979 | } |
| 980 | |
David Collins | 8885f79 | 2017-01-26 14:36:34 -0800 | [diff] [blame] | 981 | /* sysfs show function for dim mode */ |
| 982 | static ssize_t qpnp_wled_dim_mode_show(struct device *dev, |
| 983 | struct device_attribute *attr, char *buf) |
| 984 | { |
| 985 | struct qpnp_wled *wled = dev_get_drvdata(dev); |
| 986 | char *str; |
| 987 | |
| 988 | if (wled->dim_mode == QPNP_WLED_DIM_ANALOG) |
| 989 | str = "analog"; |
| 990 | else if (wled->dim_mode == QPNP_WLED_DIM_DIGITAL) |
| 991 | str = "digital"; |
| 992 | else |
| 993 | str = "hybrid"; |
| 994 | |
| 995 | return snprintf(buf, PAGE_SIZE, "%s\n", str); |
| 996 | } |
| 997 | |
| 998 | /* sysfs store function for dim mode*/ |
| 999 | static ssize_t qpnp_wled_dim_mode_store(struct device *dev, |
| 1000 | struct device_attribute *attr, const char *buf, size_t count) |
| 1001 | { |
| 1002 | struct qpnp_wled *wled = dev_get_drvdata(dev); |
| 1003 | char str[QPNP_WLED_STR_SIZE + 1]; |
| 1004 | int rc, temp; |
| 1005 | u8 reg; |
| 1006 | |
| 1007 | if (snprintf(str, QPNP_WLED_STR_SIZE, "%s", buf) > QPNP_WLED_STR_SIZE) |
| 1008 | return -EINVAL; |
| 1009 | |
| 1010 | if (strcmp(str, "analog") == 0) |
| 1011 | temp = QPNP_WLED_DIM_ANALOG; |
| 1012 | else if (strcmp(str, "digital") == 0) |
| 1013 | temp = QPNP_WLED_DIM_DIGITAL; |
| 1014 | else |
| 1015 | temp = QPNP_WLED_DIM_HYBRID; |
| 1016 | |
| 1017 | if (temp == wled->dim_mode) |
| 1018 | return count; |
| 1019 | |
| 1020 | rc = qpnp_wled_read_reg(wled, QPNP_WLED_MOD_REG(wled->sink_base), ®); |
| 1021 | if (rc < 0) |
| 1022 | return rc; |
| 1023 | |
| 1024 | if (temp == QPNP_WLED_DIM_HYBRID) { |
| 1025 | reg &= QPNP_WLED_DIM_HYB_MASK; |
| 1026 | reg |= (1 << QPNP_WLED_DIM_HYB_SHIFT); |
| 1027 | } else { |
| 1028 | reg &= QPNP_WLED_DIM_HYB_MASK; |
| 1029 | reg |= (0 << QPNP_WLED_DIM_HYB_SHIFT); |
| 1030 | reg &= QPNP_WLED_DIM_ANA_MASK; |
| 1031 | reg |= temp; |
| 1032 | } |
| 1033 | |
| 1034 | rc = qpnp_wled_write_reg(wled, QPNP_WLED_MOD_REG(wled->sink_base), reg); |
| 1035 | if (rc) |
| 1036 | return rc; |
| 1037 | |
| 1038 | wled->dim_mode = temp; |
| 1039 | |
| 1040 | return count; |
| 1041 | } |
| 1042 | |
| 1043 | /* sysfs show function for full scale current in ua*/ |
| 1044 | static ssize_t qpnp_wled_fs_curr_ua_show(struct device *dev, |
| 1045 | struct device_attribute *attr, char *buf) |
| 1046 | { |
| 1047 | struct qpnp_wled *wled = dev_get_drvdata(dev); |
| 1048 | |
| 1049 | return snprintf(buf, PAGE_SIZE, "%d\n", wled->fs_curr_ua); |
| 1050 | } |
| 1051 | |
| 1052 | /* sysfs store function for full scale current in ua*/ |
| 1053 | static ssize_t qpnp_wled_fs_curr_ua_store(struct device *dev, |
| 1054 | struct device_attribute *attr, const char *buf, size_t count) |
| 1055 | { |
| 1056 | struct qpnp_wled *wled = dev_get_drvdata(dev); |
Anirudh Ghayal | 101e4ef | 2017-05-26 16:51:53 +0530 | [diff] [blame] | 1057 | int data, i, rc; |
David Collins | 8885f79 | 2017-01-26 14:36:34 -0800 | [diff] [blame] | 1058 | u8 reg; |
| 1059 | |
| 1060 | rc = kstrtoint(buf, 10, &data); |
| 1061 | if (rc) |
| 1062 | return rc; |
| 1063 | |
Anirudh Ghayal | 101e4ef | 2017-05-26 16:51:53 +0530 | [diff] [blame] | 1064 | for (i = 0; i < wled->max_strings; i++) { |
David Collins | 8885f79 | 2017-01-26 14:36:34 -0800 | [diff] [blame] | 1065 | if (data < QPNP_WLED_FS_CURR_MIN_UA) |
| 1066 | data = QPNP_WLED_FS_CURR_MIN_UA; |
| 1067 | else if (data > QPNP_WLED_FS_CURR_MAX_UA) |
| 1068 | data = QPNP_WLED_FS_CURR_MAX_UA; |
| 1069 | |
Anirudh Ghayal | 101e4ef | 2017-05-26 16:51:53 +0530 | [diff] [blame] | 1070 | reg = data / QPNP_WLED_FS_CURR_STEP_UA; |
| 1071 | rc = qpnp_wled_masked_write_reg(wled, |
| 1072 | QPNP_WLED_FS_CURR_REG(wled->sink_base, i), |
| 1073 | QPNP_WLED_FS_CURR_MASK, reg); |
David Collins | 8885f79 | 2017-01-26 14:36:34 -0800 | [diff] [blame] | 1074 | if (rc < 0) |
| 1075 | return rc; |
David Collins | 8885f79 | 2017-01-26 14:36:34 -0800 | [diff] [blame] | 1076 | } |
| 1077 | |
| 1078 | wled->fs_curr_ua = data; |
| 1079 | |
| 1080 | rc = qpnp_wled_sync_reg_toggle(wled); |
| 1081 | if (rc < 0) { |
| 1082 | dev_err(&wled->pdev->dev, "Failed to toggle sync reg %d\n", rc); |
| 1083 | return rc; |
| 1084 | } |
| 1085 | |
| 1086 | return count; |
| 1087 | } |
| 1088 | |
| 1089 | /* sysfs attributes exported by wled */ |
| 1090 | static struct device_attribute qpnp_wled_attrs[] = { |
| 1091 | __ATTR(dump_regs, 0664, qpnp_wled_dump_regs_show, NULL), |
| 1092 | __ATTR(dim_mode, 0664, qpnp_wled_dim_mode_show, |
| 1093 | qpnp_wled_dim_mode_store), |
| 1094 | __ATTR(fs_curr_ua, 0664, qpnp_wled_fs_curr_ua_show, |
| 1095 | qpnp_wled_fs_curr_ua_store), |
| 1096 | __ATTR(start_ramp, 0664, NULL, qpnp_wled_ramp_store), |
| 1097 | __ATTR(ramp_ms, 0664, qpnp_wled_ramp_ms_show, qpnp_wled_ramp_ms_store), |
| 1098 | __ATTR(ramp_step, 0664, qpnp_wled_ramp_step_show, |
| 1099 | qpnp_wled_ramp_step_store), |
Kiran Gunda | e464871 | 2018-07-19 15:02:59 +0530 | [diff] [blame] | 1100 | __ATTR(secure_mode, 0664, NULL, qpnp_wled_irq_control), |
David Collins | 8885f79 | 2017-01-26 14:36:34 -0800 | [diff] [blame] | 1101 | }; |
| 1102 | |
| 1103 | /* worker for setting wled brightness */ |
| 1104 | static void qpnp_wled_work(struct work_struct *work) |
| 1105 | { |
| 1106 | struct qpnp_wled *wled; |
Subbaraman Narayanamurthy | dd68761 | 2017-12-05 17:36:43 -0800 | [diff] [blame] | 1107 | int level, level_255, rc; |
David Collins | 8885f79 | 2017-01-26 14:36:34 -0800 | [diff] [blame] | 1108 | |
| 1109 | wled = container_of(work, struct qpnp_wled, work); |
| 1110 | |
Subbaraman Narayanamurthy | dd68761 | 2017-12-05 17:36:43 -0800 | [diff] [blame] | 1111 | mutex_lock(&wled->lock); |
Kiran Gunda | e464871 | 2018-07-19 15:02:59 +0530 | [diff] [blame] | 1112 | |
| 1113 | if (wled->secure_mode) { |
| 1114 | pr_debug("Can not set brightness in secure_mode\n "); |
| 1115 | goto unlock_mutex; |
| 1116 | } |
| 1117 | |
David Collins | 8885f79 | 2017-01-26 14:36:34 -0800 | [diff] [blame] | 1118 | level = wled->cdev.brightness; |
| 1119 | |
Subbaraman Narayanamurthy | dd68761 | 2017-12-05 17:36:43 -0800 | [diff] [blame] | 1120 | if (wled->brt_map_table) { |
| 1121 | /* |
| 1122 | * Change the 12 bit level to 8 bit level and use the mapped |
| 1123 | * values for 12 bit level from brightness map table. |
| 1124 | */ |
| 1125 | level_255 = DIV_ROUND_CLOSEST(level, 16); |
| 1126 | if (level_255 > 255) |
| 1127 | level_255 = 255; |
David Collins | 8885f79 | 2017-01-26 14:36:34 -0800 | [diff] [blame] | 1128 | |
Subbaraman Narayanamurthy | dd68761 | 2017-12-05 17:36:43 -0800 | [diff] [blame] | 1129 | pr_debug("level: %d level_255: %d\n", level, level_255); |
Subbaraman Narayanamurthy | 3c68f42 | 2017-09-11 20:01:27 -0700 | [diff] [blame] | 1130 | if (wled->stepper_en) |
| 1131 | rc = qpnp_wled_set_step_level(wled, level_255); |
| 1132 | else |
| 1133 | rc = qpnp_wled_set_map_level(wled, level_255); |
Subbaraman Narayanamurthy | dd68761 | 2017-12-05 17:36:43 -0800 | [diff] [blame] | 1134 | if (rc) { |
| 1135 | dev_err(&wled->pdev->dev, "wled set level failed\n"); |
| 1136 | goto unlock_mutex; |
| 1137 | } |
| 1138 | wled->prev_level = level_255; |
| 1139 | } else if (level) { |
David Collins | 8885f79 | 2017-01-26 14:36:34 -0800 | [diff] [blame] | 1140 | rc = qpnp_wled_set_level(wled, level); |
| 1141 | if (rc) { |
| 1142 | dev_err(&wled->pdev->dev, "wled set level failed\n"); |
| 1143 | goto unlock_mutex; |
| 1144 | } |
| 1145 | } |
| 1146 | |
| 1147 | if (!!level != wled->prev_state) { |
| 1148 | if (!!level) { |
| 1149 | /* |
| 1150 | * For AMOLED display in pmi8998, SWIRE_AVDD_DEFAULT has |
| 1151 | * to be reconfigured every time the module is enabled. |
| 1152 | */ |
| 1153 | rc = qpnp_wled_swire_avdd_config(wled); |
| 1154 | if (rc < 0) { |
| 1155 | pr_err("Write to SWIRE_AVDD_DEFAULT register failed rc:%d\n", |
| 1156 | rc); |
| 1157 | goto unlock_mutex; |
| 1158 | } |
| 1159 | } |
| 1160 | |
| 1161 | rc = qpnp_wled_module_en(wled, wled->ctrl_base, !!level); |
| 1162 | if (rc) { |
| 1163 | dev_err(&wled->pdev->dev, "wled %sable failed\n", |
| 1164 | level ? "en" : "dis"); |
| 1165 | goto unlock_mutex; |
| 1166 | } |
| 1167 | } |
| 1168 | |
| 1169 | wled->prev_state = !!level; |
| 1170 | unlock_mutex: |
| 1171 | mutex_unlock(&wled->lock); |
| 1172 | } |
| 1173 | |
| 1174 | /* get api registered with led classdev for wled brightness */ |
| 1175 | static enum led_brightness qpnp_wled_get(struct led_classdev *led_cdev) |
| 1176 | { |
| 1177 | struct qpnp_wled *wled; |
| 1178 | |
| 1179 | wled = container_of(led_cdev, struct qpnp_wled, cdev); |
| 1180 | |
| 1181 | return wled->cdev.brightness; |
| 1182 | } |
| 1183 | |
| 1184 | /* set api registered with led classdev for wled brightness */ |
| 1185 | static void qpnp_wled_set(struct led_classdev *led_cdev, |
| 1186 | enum led_brightness level) |
| 1187 | { |
| 1188 | struct qpnp_wled *wled; |
| 1189 | |
| 1190 | wled = container_of(led_cdev, struct qpnp_wled, cdev); |
| 1191 | |
| 1192 | if (level < LED_OFF) |
| 1193 | level = LED_OFF; |
| 1194 | else if (level > wled->cdev.max_brightness) |
| 1195 | level = wled->cdev.max_brightness; |
| 1196 | |
| 1197 | wled->cdev.brightness = level; |
Subbaraman Narayanamurthy | 3c68f42 | 2017-09-11 20:01:27 -0700 | [diff] [blame] | 1198 | queue_work(wled->wq, &wled->work); |
David Collins | 8885f79 | 2017-01-26 14:36:34 -0800 | [diff] [blame] | 1199 | } |
| 1200 | |
| 1201 | static int qpnp_wled_set_disp(struct qpnp_wled *wled, u16 base_addr) |
| 1202 | { |
| 1203 | int rc; |
| 1204 | u8 reg; |
| 1205 | |
| 1206 | /* display type */ |
| 1207 | rc = qpnp_wled_read_reg(wled, QPNP_WLED_DISP_SEL_REG(base_addr), ®); |
| 1208 | if (rc < 0) |
| 1209 | return rc; |
| 1210 | |
| 1211 | reg &= QPNP_WLED_DISP_SEL_MASK; |
| 1212 | reg |= (wled->disp_type_amoled << QPNP_WLED_DISP_SEL_SHIFT); |
| 1213 | |
| 1214 | rc = qpnp_wled_sec_write_reg(wled, QPNP_WLED_DISP_SEL_REG(base_addr), |
| 1215 | reg); |
| 1216 | if (rc) |
| 1217 | return rc; |
| 1218 | |
| 1219 | if (wled->disp_type_amoled) { |
| 1220 | /* Configure the PSM CTRL register for AMOLED */ |
| 1221 | if (wled->vref_psm_mv < QPNP_WLED_VREF_PSM_MIN_MV) |
| 1222 | wled->vref_psm_mv = QPNP_WLED_VREF_PSM_MIN_MV; |
| 1223 | else if (wled->vref_psm_mv > QPNP_WLED_VREF_PSM_MAX_MV) |
| 1224 | wled->vref_psm_mv = QPNP_WLED_VREF_PSM_MAX_MV; |
| 1225 | |
| 1226 | rc = qpnp_wled_read_reg(wled, |
| 1227 | QPNP_WLED_PSM_CTRL_REG(wled->ctrl_base), ®); |
| 1228 | if (rc < 0) |
| 1229 | return rc; |
| 1230 | |
| 1231 | reg &= QPNP_WLED_VREF_PSM_MASK; |
| 1232 | reg |= ((wled->vref_psm_mv - QPNP_WLED_VREF_PSM_MIN_MV)/ |
| 1233 | QPNP_WLED_VREF_PSM_STEP_MV); |
Subbaraman Narayanamurthy | 5569884 | 2017-02-17 15:48:47 -0800 | [diff] [blame] | 1234 | reg |= QPNP_WLED_PSM_OVERWRITE_BIT; |
David Collins | 8885f79 | 2017-01-26 14:36:34 -0800 | [diff] [blame] | 1235 | rc = qpnp_wled_write_reg(wled, |
| 1236 | QPNP_WLED_PSM_CTRL_REG(wled->ctrl_base), reg); |
| 1237 | if (rc) |
| 1238 | return rc; |
| 1239 | |
| 1240 | /* Configure the VLOOP COMP RES register for AMOLED */ |
| 1241 | if (wled->loop_comp_res_kohm < QPNP_WLED_LOOP_COMP_RES_MIN_KOHM) |
| 1242 | wled->loop_comp_res_kohm = |
| 1243 | QPNP_WLED_LOOP_COMP_RES_MIN_KOHM; |
| 1244 | else if (wled->loop_comp_res_kohm > |
| 1245 | QPNP_WLED_LOOP_COMP_RES_MAX_KOHM) |
| 1246 | wled->loop_comp_res_kohm = |
| 1247 | QPNP_WLED_LOOP_COMP_RES_MAX_KOHM; |
| 1248 | |
| 1249 | rc = qpnp_wled_read_reg(wled, |
| 1250 | QPNP_WLED_VLOOP_COMP_RES_REG(wled->ctrl_base), |
| 1251 | ®); |
| 1252 | if (rc < 0) |
| 1253 | return rc; |
| 1254 | |
| 1255 | reg &= QPNP_WLED_VLOOP_COMP_RES_MASK; |
| 1256 | reg |= ((wled->loop_comp_res_kohm - |
| 1257 | QPNP_WLED_LOOP_COMP_RES_MIN_KOHM)/ |
| 1258 | QPNP_WLED_LOOP_COMP_RES_STEP_KOHM); |
| 1259 | reg |= QPNP_WLED_VLOOP_COMP_RES_OVERWRITE; |
| 1260 | rc = qpnp_wled_write_reg(wled, |
| 1261 | QPNP_WLED_VLOOP_COMP_RES_REG(wled->ctrl_base), |
| 1262 | reg); |
| 1263 | if (rc) |
| 1264 | return rc; |
| 1265 | |
| 1266 | /* Configure the CTRL TEST4 register for AMOLED */ |
| 1267 | rc = qpnp_wled_read_reg(wled, |
| 1268 | QPNP_WLED_TEST4_REG(wled->ctrl_base), ®); |
| 1269 | if (rc < 0) |
| 1270 | return rc; |
| 1271 | |
| 1272 | reg |= QPNP_WLED_TEST4_EN_IIND_UP; |
| 1273 | rc = qpnp_wled_sec_write_reg(wled, |
| 1274 | QPNP_WLED_TEST4_REG(base_addr), reg); |
| 1275 | if (rc) |
| 1276 | return rc; |
| 1277 | } else { |
| 1278 | /* |
| 1279 | * enable VREF_UP to avoid false ovp on low brightness for LCD |
| 1280 | */ |
| 1281 | reg = QPNP_WLED_TEST4_EN_VREF_UP |
| 1282 | | QPNP_WLED_TEST4_EN_DEB_BYPASS_ILIM_BIT; |
| 1283 | rc = qpnp_wled_sec_write_reg(wled, |
| 1284 | QPNP_WLED_TEST4_REG(base_addr), reg); |
| 1285 | if (rc) |
| 1286 | return rc; |
| 1287 | } |
| 1288 | |
| 1289 | return 0; |
| 1290 | } |
| 1291 | |
Subbaraman Narayanamurthy | 0c4e61b | 2017-09-29 17:16:28 -0700 | [diff] [blame] | 1292 | #define AUTO_CALIB_BRIGHTNESS 200 |
Anirudh Ghayal | 101e4ef | 2017-05-26 16:51:53 +0530 | [diff] [blame] | 1293 | static int wled_auto_calibrate(struct qpnp_wled *wled) |
| 1294 | { |
| 1295 | int rc = 0, i; |
| 1296 | u8 reg = 0, sink_config = 0, sink_test = 0, sink_valid = 0, int_sts; |
| 1297 | |
Anirudh Ghayal | 101e4ef | 2017-05-26 16:51:53 +0530 | [diff] [blame] | 1298 | /* read configured sink configuration */ |
| 1299 | rc = qpnp_wled_read_reg(wled, |
| 1300 | QPNP_WLED_CURR_SINK_REG(wled->sink_base), &sink_config); |
| 1301 | if (rc < 0) { |
| 1302 | pr_err("Failed to read SINK configuration rc=%d\n", rc); |
| 1303 | goto failed_calib; |
| 1304 | } |
| 1305 | |
| 1306 | /* disable the module before starting calibration */ |
| 1307 | rc = qpnp_wled_masked_write_reg(wled, |
| 1308 | QPNP_WLED_MODULE_EN_REG(wled->ctrl_base), |
| 1309 | QPNP_WLED_MODULE_EN_MASK, 0); |
| 1310 | if (rc < 0) { |
| 1311 | pr_err("Failed to disable WLED module rc=%d\n", rc); |
| 1312 | goto failed_calib; |
| 1313 | } |
| 1314 | |
| 1315 | /* set low brightness across all sinks */ |
| 1316 | rc = qpnp_wled_set_level(wled, AUTO_CALIB_BRIGHTNESS); |
| 1317 | if (rc < 0) { |
| 1318 | pr_err("Failed to set brightness for calibration rc=%d\n", rc); |
| 1319 | goto failed_calib; |
| 1320 | } |
| 1321 | |
Subbaraman Narayanamurthy | 0c4e61b | 2017-09-29 17:16:28 -0700 | [diff] [blame] | 1322 | if (wled->en_cabc) { |
| 1323 | for (i = 0; i < wled->max_strings; i++) { |
| 1324 | reg = 0; |
| 1325 | rc = qpnp_wled_masked_write_reg(wled, |
| 1326 | QPNP_WLED_CABC_REG(wled->sink_base, i), |
| 1327 | QPNP_WLED_CABC_MASK, reg); |
| 1328 | if (rc < 0) |
| 1329 | goto failed_calib; |
| 1330 | } |
| 1331 | } |
| 1332 | |
Anirudh Ghayal | 101e4ef | 2017-05-26 16:51:53 +0530 | [diff] [blame] | 1333 | /* disable all sinks */ |
| 1334 | rc = qpnp_wled_write_reg(wled, |
| 1335 | QPNP_WLED_CURR_SINK_REG(wled->sink_base), 0); |
| 1336 | if (rc < 0) { |
| 1337 | pr_err("Failed to disable all sinks rc=%d\n", rc); |
| 1338 | goto failed_calib; |
| 1339 | } |
| 1340 | |
Anirudh Ghayal | 101e4ef | 2017-05-26 16:51:53 +0530 | [diff] [blame] | 1341 | /* iterate through the strings one by one */ |
| 1342 | for (i = 0; i < wled->max_strings; i++) { |
| 1343 | sink_test = 1 << (QPNP_WLED_CURR_SINK_SHIFT + i); |
| 1344 | |
| 1345 | /* Enable feedback control */ |
| 1346 | rc = qpnp_wled_write_reg(wled, |
| 1347 | QPNP_WLED_FDBK_OP_REG(wled->ctrl_base), |
| 1348 | i + 1); |
| 1349 | if (rc < 0) { |
| 1350 | pr_err("Failed to enable feedback for SINK %d rc = %d\n", |
| 1351 | i + 1, rc); |
| 1352 | goto failed_calib; |
| 1353 | } |
| 1354 | |
| 1355 | /* enable the sink */ |
| 1356 | rc = qpnp_wled_write_reg(wled, |
| 1357 | QPNP_WLED_CURR_SINK_REG(wled->sink_base), sink_test); |
| 1358 | if (rc < 0) { |
| 1359 | pr_err("Failed to configure SINK %d rc=%d\n", |
| 1360 | i + 1, rc); |
| 1361 | goto failed_calib; |
| 1362 | } |
| 1363 | |
Subbaraman Narayanamurthy | 0c4e61b | 2017-09-29 17:16:28 -0700 | [diff] [blame] | 1364 | /* Enable the module */ |
| 1365 | rc = qpnp_wled_masked_write_reg(wled, |
| 1366 | QPNP_WLED_MODULE_EN_REG(wled->ctrl_base), |
| 1367 | QPNP_WLED_MODULE_EN_MASK, QPNP_WLED_MODULE_EN_MASK); |
| 1368 | if (rc < 0) { |
| 1369 | pr_err("Failed to enable WLED module rc=%d\n", rc); |
| 1370 | goto failed_calib; |
| 1371 | } |
| 1372 | |
Anirudh Ghayal | 101e4ef | 2017-05-26 16:51:53 +0530 | [diff] [blame] | 1373 | /* delay for WLED soft-start */ |
| 1374 | usleep_range(QPNP_WLED_SOFT_START_DLY_US, |
| 1375 | QPNP_WLED_SOFT_START_DLY_US + 1000); |
| 1376 | |
| 1377 | rc = qpnp_wled_read_reg(wled, |
| 1378 | QPNP_WLED_INT_RT_STS(wled->ctrl_base), &int_sts); |
| 1379 | if (rc < 0) { |
| 1380 | pr_err("Error in reading WLED_INT_RT_STS rc=%d\n", rc); |
| 1381 | goto failed_calib; |
| 1382 | } |
| 1383 | |
| 1384 | if (int_sts & QPNP_WLED_OVP_FAULT_BIT) |
| 1385 | pr_debug("WLED OVP fault detected with SINK %d\n", |
| 1386 | i + 1); |
| 1387 | else |
| 1388 | sink_valid |= sink_test; |
Subbaraman Narayanamurthy | 0c4e61b | 2017-09-29 17:16:28 -0700 | [diff] [blame] | 1389 | |
| 1390 | /* Disable the module */ |
| 1391 | rc = qpnp_wled_masked_write_reg(wled, |
| 1392 | QPNP_WLED_MODULE_EN_REG(wled->ctrl_base), |
| 1393 | QPNP_WLED_MODULE_EN_MASK, 0); |
| 1394 | if (rc < 0) { |
| 1395 | pr_err("Failed to disable WLED module rc=%d\n", rc); |
| 1396 | goto failed_calib; |
| 1397 | } |
Anirudh Ghayal | 101e4ef | 2017-05-26 16:51:53 +0530 | [diff] [blame] | 1398 | } |
| 1399 | |
| 1400 | if (sink_valid == sink_config) { |
| 1401 | pr_debug("WLED auto-calibration complete, default sink-config=%x OK!\n", |
| 1402 | sink_config); |
| 1403 | } else { |
| 1404 | pr_warn("Invalid WLED default sink config=%x changing it to=%x\n", |
| 1405 | sink_config, sink_valid); |
| 1406 | sink_config = sink_valid; |
| 1407 | } |
| 1408 | |
| 1409 | if (!sink_config) { |
| 1410 | pr_warn("No valid WLED sinks found\n"); |
Subbaraman Narayanamurthy | 15624d9 | 2017-10-12 21:04:30 -0700 | [diff] [blame] | 1411 | wled->module_dis_perm = true; |
Anirudh Ghayal | 101e4ef | 2017-05-26 16:51:53 +0530 | [diff] [blame] | 1412 | goto failed_calib; |
| 1413 | } |
| 1414 | |
Anirudh Ghayal | 101e4ef | 2017-05-26 16:51:53 +0530 | [diff] [blame] | 1415 | /* write the new sink configuration */ |
| 1416 | rc = qpnp_wled_write_reg(wled, |
| 1417 | QPNP_WLED_CURR_SINK_REG(wled->sink_base), sink_config); |
| 1418 | if (rc < 0) { |
| 1419 | pr_err("Failed to reconfigure the default sink rc=%d\n", rc); |
| 1420 | goto failed_calib; |
| 1421 | } |
| 1422 | |
| 1423 | /* MODULATOR_EN setting for valid sinks */ |
| 1424 | for (i = 0; i < wled->max_strings; i++) { |
Subbaraman Narayanamurthy | 0c4e61b | 2017-09-29 17:16:28 -0700 | [diff] [blame] | 1425 | if (wled->en_cabc) { |
| 1426 | reg = 1 << QPNP_WLED_CABC_SHIFT; |
| 1427 | rc = qpnp_wled_masked_write_reg(wled, |
| 1428 | QPNP_WLED_CABC_REG(wled->sink_base, i), |
| 1429 | QPNP_WLED_CABC_MASK, reg); |
| 1430 | if (rc < 0) |
| 1431 | goto failed_calib; |
| 1432 | } |
| 1433 | |
Anirudh Ghayal | 101e4ef | 2017-05-26 16:51:53 +0530 | [diff] [blame] | 1434 | if (sink_config & (1 << (QPNP_WLED_CURR_SINK_SHIFT + i))) |
| 1435 | reg = (QPNP_WLED_MOD_EN << QPNP_WLED_MOD_EN_SHFT); |
| 1436 | else |
| 1437 | reg = 0x0; /* disable modulator_en for unused sink */ |
| 1438 | |
| 1439 | if (wled->dim_mode == QPNP_WLED_DIM_HYBRID) |
| 1440 | reg &= QPNP_WLED_GATE_DRV_MASK; |
| 1441 | else |
| 1442 | reg |= ~QPNP_WLED_GATE_DRV_MASK; |
| 1443 | |
| 1444 | rc = qpnp_wled_write_reg(wled, |
| 1445 | QPNP_WLED_MOD_EN_REG(wled->sink_base, i), reg); |
| 1446 | if (rc < 0) { |
| 1447 | pr_err("Failed to configure MODULATOR_EN rc=%d\n", rc); |
| 1448 | goto failed_calib; |
| 1449 | } |
| 1450 | } |
| 1451 | |
| 1452 | /* restore the feedback setting */ |
| 1453 | rc = qpnp_wled_write_reg(wled, |
| 1454 | QPNP_WLED_FDBK_OP_REG(wled->ctrl_base), |
| 1455 | wled->fdbk_op); |
| 1456 | if (rc < 0) { |
| 1457 | pr_err("Failed to restore feedback setting rc=%d\n", rc); |
| 1458 | goto failed_calib; |
| 1459 | } |
| 1460 | |
| 1461 | /* restore brightness */ |
Anirudh Ghayal | ce9914f | 2017-08-31 12:11:06 +0530 | [diff] [blame] | 1462 | rc = qpnp_wled_set_level(wled, !wled->cdev.brightness ? |
| 1463 | AUTO_CALIB_BRIGHTNESS : wled->cdev.brightness); |
Anirudh Ghayal | 101e4ef | 2017-05-26 16:51:53 +0530 | [diff] [blame] | 1464 | if (rc < 0) { |
| 1465 | pr_err("Failed to set brightness after calibration rc=%d\n", |
| 1466 | rc); |
| 1467 | goto failed_calib; |
| 1468 | } |
| 1469 | |
| 1470 | rc = qpnp_wled_masked_write_reg(wled, |
| 1471 | QPNP_WLED_MODULE_EN_REG(wled->ctrl_base), |
| 1472 | QPNP_WLED_MODULE_EN_MASK, |
| 1473 | QPNP_WLED_MODULE_EN_MASK); |
| 1474 | if (rc < 0) { |
| 1475 | pr_err("Failed to enable WLED module rc=%d\n", rc); |
| 1476 | goto failed_calib; |
| 1477 | } |
| 1478 | |
| 1479 | /* delay for WLED soft-start */ |
| 1480 | usleep_range(QPNP_WLED_SOFT_START_DLY_US, |
| 1481 | QPNP_WLED_SOFT_START_DLY_US + 1000); |
| 1482 | |
| 1483 | failed_calib: |
Anirudh Ghayal | 101e4ef | 2017-05-26 16:51:53 +0530 | [diff] [blame] | 1484 | return rc; |
| 1485 | } |
| 1486 | |
| 1487 | #define WLED_AUTO_CAL_OVP_COUNT 5 |
| 1488 | #define WLED_AUTO_CAL_CNT_DLY_US 1000000 /* 1 second */ |
| 1489 | static bool qpnp_wled_auto_cal_required(struct qpnp_wled *wled) |
| 1490 | { |
| 1491 | s64 elapsed_time_us; |
| 1492 | |
| 1493 | /* |
| 1494 | * Check if the OVP fault was an occasional one |
| 1495 | * or if its firing continuously, the latter qualifies |
| 1496 | * for an auto-calibration check. |
| 1497 | */ |
| 1498 | if (!wled->auto_calibration_ovp_count) { |
| 1499 | wled->start_ovp_fault_time = ktime_get(); |
| 1500 | wled->auto_calibration_ovp_count++; |
| 1501 | } else { |
| 1502 | elapsed_time_us = ktime_us_delta(ktime_get(), |
| 1503 | wled->start_ovp_fault_time); |
| 1504 | if (elapsed_time_us > WLED_AUTO_CAL_CNT_DLY_US) |
| 1505 | wled->auto_calibration_ovp_count = 0; |
| 1506 | else |
| 1507 | wled->auto_calibration_ovp_count++; |
| 1508 | |
| 1509 | if (wled->auto_calibration_ovp_count >= |
| 1510 | WLED_AUTO_CAL_OVP_COUNT) { |
| 1511 | wled->auto_calibration_ovp_count = 0; |
| 1512 | return true; |
| 1513 | } |
| 1514 | } |
| 1515 | |
| 1516 | return false; |
| 1517 | } |
| 1518 | |
Anirudh Ghayal | ce9914f | 2017-08-31 12:11:06 +0530 | [diff] [blame] | 1519 | static int qpnp_wled_auto_calibrate_at_init(struct qpnp_wled *wled) |
| 1520 | { |
| 1521 | int rc; |
| 1522 | u8 fault_status = 0, rt_status = 0; |
| 1523 | |
| 1524 | if (!wled->auto_calib_enabled) |
| 1525 | return 0; |
| 1526 | |
| 1527 | rc = qpnp_wled_read_reg(wled, |
| 1528 | QPNP_WLED_INT_RT_STS(wled->ctrl_base), &rt_status); |
| 1529 | if (rc < 0) |
| 1530 | pr_err("Failed to read RT status rc=%d\n", rc); |
| 1531 | |
| 1532 | rc = qpnp_wled_read_reg(wled, |
| 1533 | QPNP_WLED_FAULT_STATUS(wled->ctrl_base), &fault_status); |
| 1534 | if (rc < 0) |
| 1535 | pr_err("Failed to read fault status rc=%d\n", rc); |
| 1536 | |
| 1537 | if ((rt_status & QPNP_WLED_OVP_FLT_RT_STS_BIT) || |
| 1538 | (fault_status & QPNP_WLED_OVP_FAULT_BIT)) { |
| 1539 | mutex_lock(&wled->lock); |
| 1540 | rc = wled_auto_calibrate(wled); |
| 1541 | if (rc < 0) |
| 1542 | pr_err("Failed auto-calibration rc=%d\n", rc); |
| 1543 | else |
| 1544 | wled->auto_calib_done = true; |
| 1545 | mutex_unlock(&wled->lock); |
| 1546 | } |
| 1547 | |
| 1548 | return rc; |
| 1549 | } |
| 1550 | |
David Collins | 8885f79 | 2017-01-26 14:36:34 -0800 | [diff] [blame] | 1551 | /* ovp irq handler */ |
| 1552 | static irqreturn_t qpnp_wled_ovp_irq_handler(int irq, void *_wled) |
| 1553 | { |
| 1554 | struct qpnp_wled *wled = _wled; |
| 1555 | int rc; |
Subbaraman Narayanamurthy | b5ae318 | 2017-02-17 15:14:06 -0800 | [diff] [blame] | 1556 | u8 fault_sts, int_sts; |
David Collins | 8885f79 | 2017-01-26 14:36:34 -0800 | [diff] [blame] | 1557 | |
| 1558 | rc = qpnp_wled_read_reg(wled, |
Subbaraman Narayanamurthy | b5ae318 | 2017-02-17 15:14:06 -0800 | [diff] [blame] | 1559 | QPNP_WLED_INT_RT_STS(wled->ctrl_base), &int_sts); |
| 1560 | if (rc < 0) { |
| 1561 | pr_err("Error in reading WLED_INT_RT_STS rc=%d\n", rc); |
| 1562 | return IRQ_HANDLED; |
| 1563 | } |
| 1564 | |
| 1565 | rc = qpnp_wled_read_reg(wled, |
| 1566 | QPNP_WLED_FAULT_STATUS(wled->ctrl_base), &fault_sts); |
David Collins | 8885f79 | 2017-01-26 14:36:34 -0800 | [diff] [blame] | 1567 | if (rc < 0) { |
| 1568 | pr_err("Error in reading WLED_FAULT_STATUS rc=%d\n", rc); |
| 1569 | return IRQ_HANDLED; |
| 1570 | } |
| 1571 | |
Subbaraman Narayanamurthy | b5ae318 | 2017-02-17 15:14:06 -0800 | [diff] [blame] | 1572 | if (fault_sts & (QPNP_WLED_OVP_FAULT_BIT | QPNP_WLED_ILIM_FAULT_BIT)) |
| 1573 | pr_err("WLED OVP fault detected, int_sts=%x fault_sts= %x\n", |
| 1574 | int_sts, fault_sts); |
Anirudh Ghayal | 101e4ef | 2017-05-26 16:51:53 +0530 | [diff] [blame] | 1575 | |
| 1576 | if (fault_sts & QPNP_WLED_OVP_FAULT_BIT) { |
| 1577 | if (wled->auto_calib_enabled && !wled->auto_calib_done) { |
| 1578 | if (qpnp_wled_auto_cal_required(wled)) { |
Anirudh Ghayal | ce9914f | 2017-08-31 12:11:06 +0530 | [diff] [blame] | 1579 | mutex_lock(&wled->lock); |
| 1580 | if (wled->ovp_irq > 0 && |
| 1581 | !wled->ovp_irq_disabled) { |
| 1582 | disable_irq_nosync(wled->ovp_irq); |
| 1583 | wled->ovp_irq_disabled = true; |
Anirudh Ghayal | 101e4ef | 2017-05-26 16:51:53 +0530 | [diff] [blame] | 1584 | } |
Anirudh Ghayal | ce9914f | 2017-08-31 12:11:06 +0530 | [diff] [blame] | 1585 | |
| 1586 | rc = wled_auto_calibrate(wled); |
| 1587 | if (rc < 0) |
| 1588 | pr_err("Failed auto-calibration rc=%d\n", |
| 1589 | rc); |
| 1590 | else |
| 1591 | wled->auto_calib_done = true; |
| 1592 | |
| 1593 | if (wled->ovp_irq > 0 && |
| 1594 | wled->ovp_irq_disabled) { |
| 1595 | enable_irq(wled->ovp_irq); |
| 1596 | wled->ovp_irq_disabled = false; |
| 1597 | } |
| 1598 | mutex_unlock(&wled->lock); |
Anirudh Ghayal | 101e4ef | 2017-05-26 16:51:53 +0530 | [diff] [blame] | 1599 | } |
| 1600 | } |
| 1601 | } |
| 1602 | |
David Collins | 8885f79 | 2017-01-26 14:36:34 -0800 | [diff] [blame] | 1603 | return IRQ_HANDLED; |
| 1604 | } |
| 1605 | |
| 1606 | /* short circuit irq handler */ |
| 1607 | static irqreturn_t qpnp_wled_sc_irq_handler(int irq, void *_wled) |
| 1608 | { |
| 1609 | struct qpnp_wled *wled = _wled; |
| 1610 | int rc; |
| 1611 | u8 val; |
| 1612 | |
| 1613 | rc = qpnp_wled_read_reg(wled, |
| 1614 | QPNP_WLED_FAULT_STATUS(wled->ctrl_base), &val); |
| 1615 | if (rc < 0) { |
| 1616 | pr_err("Error in reading WLED_FAULT_STATUS rc=%d\n", rc); |
| 1617 | return IRQ_HANDLED; |
| 1618 | } |
| 1619 | |
| 1620 | pr_err("WLED short circuit detected %d times fault_status=%x\n", |
| 1621 | ++wled->sc_cnt, val); |
| 1622 | mutex_lock(&wled->lock); |
| 1623 | qpnp_wled_module_en(wled, wled->ctrl_base, false); |
| 1624 | msleep(QPNP_WLED_SC_DLY_MS); |
| 1625 | qpnp_wled_module_en(wled, wled->ctrl_base, true); |
| 1626 | mutex_unlock(&wled->lock); |
| 1627 | |
| 1628 | return IRQ_HANDLED; |
| 1629 | } |
| 1630 | |
| 1631 | static bool is_avdd_trim_adjustment_required(struct qpnp_wled *wled) |
| 1632 | { |
| 1633 | int rc; |
| 1634 | u8 reg = 0; |
| 1635 | |
| 1636 | /* |
| 1637 | * AVDD trim adjustment is not required for pmi8998/pm660l and not |
| 1638 | * supported for pmi8994. |
| 1639 | */ |
| 1640 | if (wled->pmic_rev_id->pmic_subtype == PMI8998_SUBTYPE || |
| 1641 | wled->pmic_rev_id->pmic_subtype == PM660L_SUBTYPE || |
| 1642 | wled->pmic_rev_id->pmic_subtype == PMI8994_SUBTYPE) |
| 1643 | return false; |
| 1644 | |
| 1645 | /* |
| 1646 | * Configure TRIM_REG only if disp_type_amoled and it has |
| 1647 | * not already been programmed by bootloader. |
| 1648 | */ |
| 1649 | if (!wled->disp_type_amoled) |
| 1650 | return false; |
| 1651 | |
| 1652 | rc = qpnp_wled_read_reg(wled, |
| 1653 | QPNP_WLED_CTRL_SPARE_REG(wled->ctrl_base), ®); |
| 1654 | if (rc < 0) |
| 1655 | return false; |
| 1656 | |
| 1657 | return !(reg & QPNP_WLED_AVDD_SET_BIT); |
| 1658 | } |
| 1659 | |
| 1660 | static int qpnp_wled_gm_config(struct qpnp_wled *wled) |
| 1661 | { |
| 1662 | int rc; |
| 1663 | u8 mask = 0, reg = 0; |
| 1664 | |
| 1665 | /* Configure the LOOP COMP GM register */ |
Subbaraman Narayanamurthy | 80ee57af | 2017-10-19 18:38:09 -0700 | [diff] [blame] | 1666 | if ((wled->pmic_rev_id->pmic_subtype == PMI8998_SUBTYPE || |
| 1667 | wled->pmic_rev_id->pmic_subtype == PM660L_SUBTYPE)) { |
| 1668 | if (wled->disp_type_amoled) { |
| 1669 | reg = 0; |
| 1670 | mask |= QPNP_WLED_VLOOP_COMP_AUTO_GM_EN | |
| 1671 | QPNP_WLED_VLOOP_COMP_AUTO_GM_THRESH_MASK; |
| 1672 | } else { |
| 1673 | if (wled->loop_auto_gm_en) |
| 1674 | reg |= QPNP_WLED_VLOOP_COMP_AUTO_GM_EN; |
David Collins | 8885f79 | 2017-01-26 14:36:34 -0800 | [diff] [blame] | 1675 | |
Subbaraman Narayanamurthy | 80ee57af | 2017-10-19 18:38:09 -0700 | [diff] [blame] | 1676 | if (wled->loop_auto_gm_thresh > |
| 1677 | QPNP_WLED_LOOP_AUTO_GM_THRESH_MAX) |
| 1678 | wled->loop_auto_gm_thresh = |
| 1679 | QPNP_WLED_LOOP_AUTO_GM_THRESH_MAX; |
David Collins | 8885f79 | 2017-01-26 14:36:34 -0800 | [diff] [blame] | 1680 | |
Subbaraman Narayanamurthy | 80ee57af | 2017-10-19 18:38:09 -0700 | [diff] [blame] | 1681 | reg |= wled->loop_auto_gm_thresh << |
| 1682 | QPNP_WLED_VLOOP_COMP_AUTO_GM_THRESH_SHIFT; |
| 1683 | mask |= QPNP_WLED_VLOOP_COMP_AUTO_GM_EN | |
| 1684 | QPNP_WLED_VLOOP_COMP_AUTO_GM_THRESH_MASK; |
| 1685 | } |
David Collins | 8885f79 | 2017-01-26 14:36:34 -0800 | [diff] [blame] | 1686 | } |
| 1687 | |
| 1688 | if (wled->loop_ea_gm < QPNP_WLED_LOOP_EA_GM_MIN) |
| 1689 | wled->loop_ea_gm = QPNP_WLED_LOOP_EA_GM_MIN; |
| 1690 | else if (wled->loop_ea_gm > QPNP_WLED_LOOP_EA_GM_MAX) |
| 1691 | wled->loop_ea_gm = QPNP_WLED_LOOP_EA_GM_MAX; |
| 1692 | |
| 1693 | reg |= wled->loop_ea_gm | QPNP_WLED_VLOOP_COMP_GM_OVERWRITE; |
| 1694 | mask |= QPNP_WLED_VLOOP_COMP_GM_MASK | |
| 1695 | QPNP_WLED_VLOOP_COMP_GM_OVERWRITE; |
| 1696 | |
| 1697 | rc = qpnp_wled_masked_write_reg(wled, |
| 1698 | QPNP_WLED_VLOOP_COMP_GM_REG(wled->ctrl_base), mask, |
| 1699 | reg); |
| 1700 | if (rc) |
| 1701 | pr_err("write VLOOP_COMP_GM_REG failed, rc=%d]\n", rc); |
| 1702 | |
| 1703 | return rc; |
| 1704 | } |
| 1705 | |
| 1706 | static int qpnp_wled_ovp_config(struct qpnp_wled *wled) |
| 1707 | { |
| 1708 | int rc, i, *ovp_table; |
| 1709 | u8 reg; |
| 1710 | |
| 1711 | /* |
| 1712 | * Configure the OVP register based on ovp_mv only if display type is |
| 1713 | * not AMOLED. |
| 1714 | */ |
| 1715 | if (wled->disp_type_amoled) |
| 1716 | return 0; |
| 1717 | |
| 1718 | if (wled->pmic_rev_id->pmic_subtype == PMI8998_SUBTYPE || |
| 1719 | wled->pmic_rev_id->pmic_subtype == PM660L_SUBTYPE) |
| 1720 | ovp_table = qpnp_wled_ovp_thresholds_pmi8998; |
| 1721 | else |
| 1722 | ovp_table = qpnp_wled_ovp_thresholds_pmi8994; |
| 1723 | |
| 1724 | for (i = 0; i < NUM_SUPPORTED_OVP_THRESHOLDS; i++) { |
| 1725 | if (wled->ovp_mv == ovp_table[i]) |
| 1726 | break; |
| 1727 | } |
| 1728 | |
| 1729 | if (i == NUM_SUPPORTED_OVP_THRESHOLDS) { |
| 1730 | dev_err(&wled->pdev->dev, |
| 1731 | "Invalid ovp threshold specified in device tree\n"); |
| 1732 | return -EINVAL; |
| 1733 | } |
| 1734 | |
| 1735 | reg = i & QPNP_WLED_OVP_MASK; |
| 1736 | rc = qpnp_wled_masked_write_reg(wled, |
| 1737 | QPNP_WLED_OVP_REG(wled->ctrl_base), |
| 1738 | QPNP_WLED_OVP_MASK, reg); |
| 1739 | if (rc) |
| 1740 | return rc; |
| 1741 | |
| 1742 | return 0; |
| 1743 | } |
| 1744 | |
| 1745 | static int qpnp_wled_avdd_trim_config(struct qpnp_wled *wled) |
| 1746 | { |
| 1747 | int rc, i; |
| 1748 | u8 reg; |
| 1749 | |
| 1750 | for (i = 0; i < NUM_SUPPORTED_AVDD_VOLTAGES; i++) { |
| 1751 | if (wled->avdd_target_voltage_mv == |
| 1752 | qpnp_wled_avdd_target_voltages[i]) |
| 1753 | break; |
| 1754 | } |
| 1755 | |
| 1756 | if (i == NUM_SUPPORTED_AVDD_VOLTAGES) { |
| 1757 | dev_err(&wled->pdev->dev, |
| 1758 | "Invalid avdd target voltage specified in device tree\n"); |
| 1759 | return -EINVAL; |
| 1760 | } |
| 1761 | |
| 1762 | /* Update WLED_OVP register based on desired target voltage */ |
| 1763 | reg = qpnp_wled_ovp_reg_settings[i]; |
| 1764 | rc = qpnp_wled_masked_write_reg(wled, |
| 1765 | QPNP_WLED_OVP_REG(wled->ctrl_base), |
| 1766 | QPNP_WLED_OVP_MASK, reg); |
| 1767 | if (rc) |
| 1768 | return rc; |
| 1769 | |
| 1770 | /* Update WLED_TRIM register based on desired target voltage */ |
| 1771 | rc = qpnp_wled_read_reg(wled, |
| 1772 | QPNP_WLED_REF_7P7_TRIM_REG(wled->ctrl_base), ®); |
| 1773 | if (rc) |
| 1774 | return rc; |
| 1775 | |
| 1776 | reg += qpnp_wled_avdd_trim_adjustments[i]; |
| 1777 | if ((s8)reg < QPNP_WLED_AVDD_MIN_TRIM_VAL || |
| 1778 | (s8)reg > QPNP_WLED_AVDD_MAX_TRIM_VAL) { |
| 1779 | dev_dbg(&wled->pdev->dev, |
| 1780 | "adjusted trim %d is not within range, capping it\n", |
| 1781 | (s8)reg); |
| 1782 | if ((s8)reg < QPNP_WLED_AVDD_MIN_TRIM_VAL) |
| 1783 | reg = QPNP_WLED_AVDD_MIN_TRIM_VAL; |
| 1784 | else |
| 1785 | reg = QPNP_WLED_AVDD_MAX_TRIM_VAL; |
| 1786 | } |
| 1787 | |
| 1788 | reg &= QPNP_WLED_7P7_TRIM_MASK; |
| 1789 | rc = qpnp_wled_sec_write_reg(wled, |
| 1790 | QPNP_WLED_REF_7P7_TRIM_REG(wled->ctrl_base), reg); |
| 1791 | if (rc < 0) |
| 1792 | dev_err(&wled->pdev->dev, "Write to 7P7_TRIM register failed, rc=%d\n", |
| 1793 | rc); |
| 1794 | return rc; |
| 1795 | } |
| 1796 | |
| 1797 | static int qpnp_wled_avdd_mode_config(struct qpnp_wled *wled) |
| 1798 | { |
| 1799 | int rc; |
| 1800 | u8 reg = 0; |
| 1801 | |
| 1802 | /* |
| 1803 | * At present, configuring the mode to SPMI/SWIRE for controlling |
| 1804 | * AVDD voltage is available only in pmi8998/pm660l. |
| 1805 | */ |
| 1806 | if (wled->pmic_rev_id->pmic_subtype != PMI8998_SUBTYPE && |
| 1807 | wled->pmic_rev_id->pmic_subtype != PM660L_SUBTYPE) |
| 1808 | return 0; |
| 1809 | |
| 1810 | /* AMOLED_VOUT should be configured for AMOLED */ |
| 1811 | if (!wled->disp_type_amoled) |
| 1812 | return 0; |
| 1813 | |
| 1814 | /* Configure avdd register */ |
| 1815 | if (wled->avdd_target_voltage_mv > QPNP_WLED_AVDD_MAX_MV) { |
| 1816 | dev_dbg(&wled->pdev->dev, "Capping avdd target voltage to %d\n", |
| 1817 | QPNP_WLED_AVDD_MAX_MV); |
| 1818 | wled->avdd_target_voltage_mv = QPNP_WLED_AVDD_MAX_MV; |
| 1819 | } else if (wled->avdd_target_voltage_mv < QPNP_WLED_AVDD_MIN_MV) { |
| 1820 | dev_info(&wled->pdev->dev, "Capping avdd target voltage to %d\n", |
| 1821 | QPNP_WLED_AVDD_MIN_MV); |
| 1822 | wled->avdd_target_voltage_mv = QPNP_WLED_AVDD_MIN_MV; |
| 1823 | } |
| 1824 | |
| 1825 | if (wled->avdd_mode_spmi) { |
| 1826 | reg = QPNP_WLED_AVDD_MV_TO_REG(wled->avdd_target_voltage_mv); |
| 1827 | reg |= QPNP_WLED_AVDD_SEL_SPMI_BIT; |
| 1828 | rc = qpnp_wled_write_reg(wled, |
| 1829 | QPNP_WLED_AMOLED_VOUT_REG(wled->ctrl_base), |
| 1830 | reg); |
| 1831 | if (rc < 0) |
| 1832 | pr_err("Write to AMOLED_VOUT register failed, rc=%d\n", |
| 1833 | rc); |
| 1834 | } else { |
| 1835 | rc = qpnp_wled_swire_avdd_config(wled); |
| 1836 | if (rc < 0) |
| 1837 | pr_err("Write to SWIRE_AVDD_DEFAULT register failed rc:%d\n", |
| 1838 | rc); |
| 1839 | } |
| 1840 | |
| 1841 | return rc; |
| 1842 | } |
| 1843 | |
| 1844 | static int qpnp_wled_ilim_config(struct qpnp_wled *wled) |
| 1845 | { |
| 1846 | int rc, i, *ilim_table; |
| 1847 | u8 reg; |
| 1848 | |
| 1849 | if (wled->ilim_ma < PMI8994_WLED_ILIM_MIN_MA) |
| 1850 | wled->ilim_ma = PMI8994_WLED_ILIM_MIN_MA; |
| 1851 | |
| 1852 | if (wled->pmic_rev_id->pmic_subtype == PMI8998_SUBTYPE || |
| 1853 | wled->pmic_rev_id->pmic_subtype == PM660L_SUBTYPE) { |
| 1854 | ilim_table = qpnp_wled_ilim_settings_pmi8998; |
| 1855 | if (wled->ilim_ma > PMI8998_WLED_ILIM_MAX_MA) |
| 1856 | wled->ilim_ma = PMI8998_WLED_ILIM_MAX_MA; |
| 1857 | } else { |
| 1858 | ilim_table = qpnp_wled_ilim_settings_pmi8994; |
| 1859 | if (wled->ilim_ma > PMI8994_WLED_ILIM_MAX_MA) |
| 1860 | wled->ilim_ma = PMI8994_WLED_ILIM_MAX_MA; |
| 1861 | } |
| 1862 | |
| 1863 | for (i = 0; i < NUM_SUPPORTED_ILIM_THRESHOLDS; i++) { |
| 1864 | if (wled->ilim_ma == ilim_table[i]) |
| 1865 | break; |
| 1866 | } |
| 1867 | |
| 1868 | if (i == NUM_SUPPORTED_ILIM_THRESHOLDS) { |
| 1869 | dev_err(&wled->pdev->dev, |
| 1870 | "Invalid ilim threshold specified in device tree\n"); |
| 1871 | return -EINVAL; |
| 1872 | } |
| 1873 | |
| 1874 | reg = (i & QPNP_WLED_ILIM_MASK) | QPNP_WLED_ILIM_OVERWRITE; |
| 1875 | rc = qpnp_wled_masked_write_reg(wled, |
| 1876 | QPNP_WLED_ILIM_REG(wled->ctrl_base), |
| 1877 | QPNP_WLED_ILIM_MASK | QPNP_WLED_ILIM_OVERWRITE, reg); |
| 1878 | if (rc < 0) |
| 1879 | dev_err(&wled->pdev->dev, "Write to ILIM register failed, rc=%d\n", |
| 1880 | rc); |
| 1881 | return rc; |
| 1882 | } |
| 1883 | |
| 1884 | static int qpnp_wled_vref_config(struct qpnp_wled *wled) |
| 1885 | { |
| 1886 | |
| 1887 | struct wled_vref_setting vref_setting; |
| 1888 | int rc; |
| 1889 | u8 reg = 0; |
| 1890 | |
| 1891 | if (wled->pmic_rev_id->pmic_subtype == PMI8998_SUBTYPE || |
| 1892 | wled->pmic_rev_id->pmic_subtype == PM660L_SUBTYPE) |
| 1893 | vref_setting = vref_setting_pmi8998; |
| 1894 | else |
| 1895 | vref_setting = vref_setting_pmi8994; |
| 1896 | |
| 1897 | if (wled->vref_uv < vref_setting.min_uv) |
| 1898 | wled->vref_uv = vref_setting.min_uv; |
| 1899 | else if (wled->vref_uv > vref_setting.max_uv) |
| 1900 | wled->vref_uv = vref_setting.max_uv; |
| 1901 | |
| 1902 | reg |= DIV_ROUND_CLOSEST(wled->vref_uv - vref_setting.min_uv, |
| 1903 | vref_setting.step_uv); |
| 1904 | |
| 1905 | rc = qpnp_wled_masked_write_reg(wled, |
| 1906 | QPNP_WLED_VREF_REG(wled->ctrl_base), |
| 1907 | QPNP_WLED_VREF_MASK, reg); |
| 1908 | if (rc) |
| 1909 | pr_err("Write VREF_REG failed, rc=%d\n", rc); |
| 1910 | |
| 1911 | return rc; |
| 1912 | } |
| 1913 | |
| 1914 | /* Configure WLED registers */ |
| 1915 | static int qpnp_wled_config(struct qpnp_wled *wled) |
| 1916 | { |
| 1917 | int rc, i, temp; |
Anirudh Ghayal | 101e4ef | 2017-05-26 16:51:53 +0530 | [diff] [blame] | 1918 | u8 reg = 0, sink_en = 0, mask; |
David Collins | 8885f79 | 2017-01-26 14:36:34 -0800 | [diff] [blame] | 1919 | |
| 1920 | /* Configure display type */ |
| 1921 | rc = qpnp_wled_set_disp(wled, wled->ctrl_base); |
| 1922 | if (rc < 0) |
| 1923 | return rc; |
| 1924 | |
| 1925 | /* Configure the FEEDBACK OUTPUT register */ |
| 1926 | rc = qpnp_wled_read_reg(wled, QPNP_WLED_FDBK_OP_REG(wled->ctrl_base), |
| 1927 | ®); |
| 1928 | if (rc < 0) |
| 1929 | return rc; |
| 1930 | reg &= QPNP_WLED_FDBK_OP_MASK; |
| 1931 | reg |= wled->fdbk_op; |
| 1932 | rc = qpnp_wled_write_reg(wled, QPNP_WLED_FDBK_OP_REG(wled->ctrl_base), |
| 1933 | reg); |
| 1934 | if (rc) |
| 1935 | return rc; |
| 1936 | |
| 1937 | /* Configure the VREF register */ |
| 1938 | rc = qpnp_wled_vref_config(wled); |
| 1939 | if (rc < 0) { |
| 1940 | pr_err("Error in configuring wled vref, rc=%d\n", rc); |
| 1941 | return rc; |
| 1942 | } |
| 1943 | |
| 1944 | /* Configure VLOOP_COMP_GM register */ |
| 1945 | rc = qpnp_wled_gm_config(wled); |
| 1946 | if (rc < 0) { |
| 1947 | pr_err("Error in configureing wled gm, rc=%d\n", rc); |
| 1948 | return rc; |
| 1949 | } |
| 1950 | |
| 1951 | /* Configure the ILIM register */ |
| 1952 | rc = qpnp_wled_ilim_config(wled); |
| 1953 | if (rc < 0) { |
| 1954 | pr_err("Error in configuring wled ilim, rc=%d\n", rc); |
| 1955 | return rc; |
| 1956 | } |
| 1957 | |
| 1958 | /* Configure auto PFM mode for LCD mode only */ |
| 1959 | if ((wled->pmic_rev_id->pmic_subtype == PMI8998_SUBTYPE || |
| 1960 | wled->pmic_rev_id->pmic_subtype == PM660L_SUBTYPE) |
| 1961 | && !wled->disp_type_amoled) { |
| 1962 | reg = 0; |
| 1963 | reg |= wled->lcd_auto_pfm_thresh; |
| 1964 | reg |= wled->lcd_auto_pfm_en << |
| 1965 | QPNP_WLED_LCD_AUTO_PFM_EN_SHIFT; |
| 1966 | rc = qpnp_wled_masked_write_reg(wled, |
| 1967 | QPNP_WLED_LCD_AUTO_PFM_REG(wled->ctrl_base), |
| 1968 | QPNP_WLED_LCD_AUTO_PFM_EN_BIT | |
| 1969 | QPNP_WLED_LCD_AUTO_PFM_THRESH_MASK, reg); |
| 1970 | if (rc < 0) { |
| 1971 | pr_err("Write LCD_AUTO_PFM failed, rc=%d\n", rc); |
| 1972 | return rc; |
| 1973 | } |
| 1974 | } |
| 1975 | |
| 1976 | /* Configure the Soft start Ramp delay: for AMOLED - 0,for LCD - 2 */ |
| 1977 | reg = (wled->disp_type_amoled) ? 0 : 2; |
Subbaraman Narayanamurthy | 80ee57af | 2017-10-19 18:38:09 -0700 | [diff] [blame] | 1978 | mask = SOFTSTART_RAMP_DELAY_MASK; |
| 1979 | if ((wled->pmic_rev_id->pmic_subtype == PMI8998_SUBTYPE || |
| 1980 | wled->pmic_rev_id->pmic_subtype == PM660L_SUBTYPE) |
| 1981 | && wled->disp_type_amoled) { |
| 1982 | reg |= SOFTSTART_OVERWRITE_BIT; |
| 1983 | mask |= SOFTSTART_OVERWRITE_BIT; |
| 1984 | } |
| 1985 | |
| 1986 | rc = qpnp_wled_masked_write_reg(wled, |
| 1987 | QPNP_WLED_SOFTSTART_RAMP_DLY(wled->ctrl_base), |
| 1988 | mask, reg); |
David Collins | 8885f79 | 2017-01-26 14:36:34 -0800 | [diff] [blame] | 1989 | if (rc) |
| 1990 | return rc; |
| 1991 | |
| 1992 | /* Configure the MAX BOOST DUTY register */ |
| 1993 | if (wled->boost_duty_ns < QPNP_WLED_BOOST_DUTY_MIN_NS) |
| 1994 | wled->boost_duty_ns = QPNP_WLED_BOOST_DUTY_MIN_NS; |
| 1995 | else if (wled->boost_duty_ns > QPNP_WLED_BOOST_DUTY_MAX_NS) |
| 1996 | wled->boost_duty_ns = QPNP_WLED_BOOST_DUTY_MAX_NS; |
| 1997 | |
| 1998 | rc = qpnp_wled_read_reg(wled, QPNP_WLED_BOOST_DUTY_REG(wled->ctrl_base), |
| 1999 | ®); |
| 2000 | if (rc < 0) |
| 2001 | return rc; |
| 2002 | reg &= QPNP_WLED_BOOST_DUTY_MASK; |
| 2003 | reg |= (wled->boost_duty_ns / QPNP_WLED_BOOST_DUTY_STEP_NS); |
| 2004 | rc = qpnp_wled_write_reg(wled, |
| 2005 | QPNP_WLED_BOOST_DUTY_REG(wled->ctrl_base), reg); |
| 2006 | if (rc) |
| 2007 | return rc; |
| 2008 | |
| 2009 | /* Configure the SWITCHING FREQ register */ |
Subbaraman Narayanamurthy | 644b09ac | 2017-09-12 15:36:37 -0700 | [diff] [blame] | 2010 | if (wled->switch_freq_khz == 1600) |
| 2011 | reg = QPNP_WLED_SWITCH_FREQ_1600_KHZ_CODE; |
David Collins | 8885f79 | 2017-01-26 14:36:34 -0800 | [diff] [blame] | 2012 | else |
Subbaraman Narayanamurthy | 644b09ac | 2017-09-12 15:36:37 -0700 | [diff] [blame] | 2013 | reg = QPNP_WLED_SWITCH_FREQ_800_KHZ_CODE; |
David Collins | 8885f79 | 2017-01-26 14:36:34 -0800 | [diff] [blame] | 2014 | |
Subbaraman Narayanamurthy | 644b09ac | 2017-09-12 15:36:37 -0700 | [diff] [blame] | 2015 | /* |
| 2016 | * Do not set the overwrite bit when switching frequency is selected |
| 2017 | * for AMOLED. This register is in logic reset block which can cause |
| 2018 | * the value to be overwritten during module enable/disable. |
| 2019 | */ |
| 2020 | mask = QPNP_WLED_SWITCH_FREQ_MASK | QPNP_WLED_SWITCH_FREQ_OVERWRITE; |
| 2021 | if (!wled->disp_type_amoled) |
| 2022 | reg |= QPNP_WLED_SWITCH_FREQ_OVERWRITE; |
| 2023 | |
| 2024 | rc = qpnp_wled_masked_write_reg(wled, |
| 2025 | QPNP_WLED_SWITCH_FREQ_REG(wled->ctrl_base), mask, reg); |
David Collins | 8885f79 | 2017-01-26 14:36:34 -0800 | [diff] [blame] | 2026 | if (rc < 0) |
| 2027 | return rc; |
David Collins | 8885f79 | 2017-01-26 14:36:34 -0800 | [diff] [blame] | 2028 | |
| 2029 | rc = qpnp_wled_ovp_config(wled); |
| 2030 | if (rc < 0) { |
| 2031 | pr_err("Error in configuring OVP threshold, rc=%d\n", rc); |
| 2032 | return rc; |
| 2033 | } |
| 2034 | |
| 2035 | if (is_avdd_trim_adjustment_required(wled)) { |
| 2036 | rc = qpnp_wled_avdd_trim_config(wled); |
| 2037 | if (rc < 0) |
| 2038 | return rc; |
| 2039 | } |
| 2040 | |
| 2041 | rc = qpnp_wled_avdd_mode_config(wled); |
| 2042 | if (rc < 0) |
| 2043 | return rc; |
| 2044 | |
| 2045 | /* Configure the MODULATION register */ |
| 2046 | if (wled->mod_freq_khz <= QPNP_WLED_MOD_FREQ_1200_KHZ) { |
| 2047 | wled->mod_freq_khz = QPNP_WLED_MOD_FREQ_1200_KHZ; |
| 2048 | temp = 3; |
| 2049 | } else if (wled->mod_freq_khz <= QPNP_WLED_MOD_FREQ_2400_KHZ) { |
| 2050 | wled->mod_freq_khz = QPNP_WLED_MOD_FREQ_2400_KHZ; |
| 2051 | temp = 2; |
| 2052 | } else if (wled->mod_freq_khz <= QPNP_WLED_MOD_FREQ_9600_KHZ) { |
| 2053 | wled->mod_freq_khz = QPNP_WLED_MOD_FREQ_9600_KHZ; |
| 2054 | temp = 1; |
| 2055 | } else if (wled->mod_freq_khz <= QPNP_WLED_MOD_FREQ_19200_KHZ) { |
| 2056 | wled->mod_freq_khz = QPNP_WLED_MOD_FREQ_19200_KHZ; |
| 2057 | temp = 0; |
| 2058 | } else { |
| 2059 | wled->mod_freq_khz = QPNP_WLED_MOD_FREQ_9600_KHZ; |
| 2060 | temp = 1; |
| 2061 | } |
| 2062 | |
| 2063 | rc = qpnp_wled_read_reg(wled, QPNP_WLED_MOD_REG(wled->sink_base), ®); |
| 2064 | if (rc < 0) |
| 2065 | return rc; |
| 2066 | reg &= QPNP_WLED_MOD_FREQ_MASK; |
| 2067 | reg |= (temp << QPNP_WLED_MOD_FREQ_SHIFT); |
| 2068 | |
| 2069 | reg &= QPNP_WLED_PHASE_STAG_MASK; |
| 2070 | reg |= (wled->en_phase_stag << QPNP_WLED_PHASE_STAG_SHIFT); |
| 2071 | |
| 2072 | reg &= QPNP_WLED_ACC_CLK_FREQ_MASK; |
| 2073 | reg |= (temp << QPNP_WLED_ACC_CLK_FREQ_SHIFT); |
| 2074 | |
| 2075 | reg &= QPNP_WLED_DIM_RES_MASK; |
| 2076 | reg |= (wled->en_9b_dim_res << QPNP_WLED_DIM_RES_SHIFT); |
| 2077 | |
| 2078 | if (wled->dim_mode == QPNP_WLED_DIM_HYBRID) { |
| 2079 | reg &= QPNP_WLED_DIM_HYB_MASK; |
| 2080 | reg |= (1 << QPNP_WLED_DIM_HYB_SHIFT); |
| 2081 | } else { |
| 2082 | reg &= QPNP_WLED_DIM_HYB_MASK; |
| 2083 | reg |= (0 << QPNP_WLED_DIM_HYB_SHIFT); |
| 2084 | reg &= QPNP_WLED_DIM_ANA_MASK; |
| 2085 | reg |= wled->dim_mode; |
| 2086 | } |
| 2087 | |
| 2088 | rc = qpnp_wled_write_reg(wled, QPNP_WLED_MOD_REG(wled->sink_base), reg); |
| 2089 | if (rc) |
| 2090 | return rc; |
| 2091 | |
| 2092 | /* Configure the HYBRID THRESHOLD register */ |
Kiran Gunda | a81bbb3 | 2018-09-11 15:03:54 +0530 | [diff] [blame] | 2093 | if (wled->dim_mode == QPNP_WLED_DIM_HYBRID) { |
| 2094 | if (wled->hyb_thres < QPNP_WLED_HYB_THRES_MIN) |
| 2095 | wled->hyb_thres = QPNP_WLED_HYB_THRES_MIN; |
| 2096 | else if (wled->hyb_thres > QPNP_WLED_HYB_THRES_MAX) |
| 2097 | wled->hyb_thres = QPNP_WLED_HYB_THRES_MAX; |
David Collins | 8885f79 | 2017-01-26 14:36:34 -0800 | [diff] [blame] | 2098 | |
Kiran Gunda | a81bbb3 | 2018-09-11 15:03:54 +0530 | [diff] [blame] | 2099 | rc = qpnp_wled_read_reg(wled, |
| 2100 | QPNP_WLED_HYB_THRES_REG(wled->sink_base), |
| 2101 | ®); |
| 2102 | if (rc < 0) |
| 2103 | return rc; |
| 2104 | reg &= QPNP_WLED_HYB_THRES_MASK; |
| 2105 | temp = fls(wled->hyb_thres / QPNP_WLED_HYB_THRES_MIN) - 1; |
| 2106 | reg |= temp; |
| 2107 | rc = qpnp_wled_write_reg(wled, |
| 2108 | QPNP_WLED_HYB_THRES_REG(wled->sink_base), |
| 2109 | reg); |
| 2110 | if (rc) |
| 2111 | return rc; |
| 2112 | } |
David Collins | 8885f79 | 2017-01-26 14:36:34 -0800 | [diff] [blame] | 2113 | |
| 2114 | /* Configure TEST5 register */ |
| 2115 | if (wled->dim_mode == QPNP_WLED_DIM_DIGITAL) { |
| 2116 | reg = QPNP_WLED_SINK_TEST5_DIG; |
| 2117 | } else { |
| 2118 | reg = QPNP_WLED_SINK_TEST5_HYB; |
| 2119 | if (wled->pmic_rev_id->pmic_subtype == PM660L_SUBTYPE) |
| 2120 | reg |= QPNP_WLED_SINK_TEST5_HVG_PULL_STR_BIT; |
| 2121 | } |
| 2122 | |
| 2123 | rc = qpnp_wled_sec_write_reg(wled, |
| 2124 | QPNP_WLED_SINK_TEST5_REG(wled->sink_base), reg); |
| 2125 | if (rc) |
| 2126 | return rc; |
| 2127 | |
| 2128 | /* disable all current sinks and enable selected strings */ |
| 2129 | reg = 0x00; |
| 2130 | rc = qpnp_wled_write_reg(wled, QPNP_WLED_CURR_SINK_REG(wled->sink_base), |
| 2131 | reg); |
| 2132 | |
Anirudh Ghayal | 101e4ef | 2017-05-26 16:51:53 +0530 | [diff] [blame] | 2133 | for (i = 0; i < wled->max_strings; i++) { |
| 2134 | /* SYNC DELAY */ |
| 2135 | if (wled->sync_dly_us > QPNP_WLED_SYNC_DLY_MAX_US) |
| 2136 | wled->sync_dly_us = QPNP_WLED_SYNC_DLY_MAX_US; |
| 2137 | |
| 2138 | reg = wled->sync_dly_us / QPNP_WLED_SYNC_DLY_STEP_US; |
| 2139 | mask = QPNP_WLED_SYNC_DLY_MASK; |
| 2140 | rc = qpnp_wled_masked_write_reg(wled, |
| 2141 | QPNP_WLED_SYNC_DLY_REG(wled->sink_base, i), |
| 2142 | mask, reg); |
| 2143 | if (rc < 0) |
| 2144 | return rc; |
| 2145 | |
| 2146 | /* FULL SCALE CURRENT */ |
| 2147 | if (wled->fs_curr_ua > QPNP_WLED_FS_CURR_MAX_UA) |
| 2148 | wled->fs_curr_ua = QPNP_WLED_FS_CURR_MAX_UA; |
| 2149 | |
| 2150 | reg = wled->fs_curr_ua / QPNP_WLED_FS_CURR_STEP_UA; |
| 2151 | mask = QPNP_WLED_FS_CURR_MASK; |
| 2152 | rc = qpnp_wled_masked_write_reg(wled, |
| 2153 | QPNP_WLED_FS_CURR_REG(wled->sink_base, i), |
| 2154 | mask, reg); |
| 2155 | if (rc < 0) |
| 2156 | return rc; |
| 2157 | |
| 2158 | /* CABC */ |
| 2159 | reg = wled->en_cabc ? (1 << QPNP_WLED_CABC_SHIFT) : 0; |
| 2160 | mask = QPNP_WLED_CABC_MASK; |
| 2161 | rc = qpnp_wled_masked_write_reg(wled, |
| 2162 | QPNP_WLED_CABC_REG(wled->sink_base, i), |
| 2163 | mask, reg); |
| 2164 | if (rc < 0) |
| 2165 | return rc; |
| 2166 | } |
| 2167 | |
| 2168 | /* Settings specific to valid sinks */ |
David Collins | 8885f79 | 2017-01-26 14:36:34 -0800 | [diff] [blame] | 2169 | for (i = 0; i < wled->num_strings; i++) { |
Anirudh Ghayal | 101e4ef | 2017-05-26 16:51:53 +0530 | [diff] [blame] | 2170 | if (wled->strings[i] >= wled->max_strings) { |
David Collins | 8885f79 | 2017-01-26 14:36:34 -0800 | [diff] [blame] | 2171 | dev_err(&wled->pdev->dev, "Invalid string number\n"); |
| 2172 | return -EINVAL; |
| 2173 | } |
David Collins | 8885f79 | 2017-01-26 14:36:34 -0800 | [diff] [blame] | 2174 | /* MODULATOR */ |
| 2175 | rc = qpnp_wled_read_reg(wled, |
Anirudh Ghayal | 101e4ef | 2017-05-26 16:51:53 +0530 | [diff] [blame] | 2176 | QPNP_WLED_MOD_EN_REG(wled->sink_base, i), ®); |
David Collins | 8885f79 | 2017-01-26 14:36:34 -0800 | [diff] [blame] | 2177 | if (rc < 0) |
| 2178 | return rc; |
| 2179 | reg &= QPNP_WLED_MOD_EN_MASK; |
| 2180 | reg |= (QPNP_WLED_MOD_EN << QPNP_WLED_MOD_EN_SHFT); |
| 2181 | |
| 2182 | if (wled->dim_mode == QPNP_WLED_DIM_HYBRID) |
| 2183 | reg &= QPNP_WLED_GATE_DRV_MASK; |
| 2184 | else |
| 2185 | reg |= ~QPNP_WLED_GATE_DRV_MASK; |
| 2186 | |
| 2187 | rc = qpnp_wled_write_reg(wled, |
Anirudh Ghayal | 101e4ef | 2017-05-26 16:51:53 +0530 | [diff] [blame] | 2188 | QPNP_WLED_MOD_EN_REG(wled->sink_base, i), reg); |
David Collins | 8885f79 | 2017-01-26 14:36:34 -0800 | [diff] [blame] | 2189 | if (rc) |
| 2190 | return rc; |
| 2191 | |
Anirudh Ghayal | 101e4ef | 2017-05-26 16:51:53 +0530 | [diff] [blame] | 2192 | /* SINK EN */ |
David Collins | 8885f79 | 2017-01-26 14:36:34 -0800 | [diff] [blame] | 2193 | temp = wled->strings[i] + QPNP_WLED_CURR_SINK_SHIFT; |
Anirudh Ghayal | 101e4ef | 2017-05-26 16:51:53 +0530 | [diff] [blame] | 2194 | sink_en |= (1 << temp); |
| 2195 | } |
| 2196 | mask = QPNP_WLED_CURR_SINK_MASK; |
| 2197 | rc = qpnp_wled_masked_write_reg(wled, |
| 2198 | QPNP_WLED_CURR_SINK_REG(wled->sink_base), |
| 2199 | mask, sink_en); |
| 2200 | if (rc < 0) { |
| 2201 | dev_err(&wled->pdev->dev, |
| 2202 | "Failed to enable WLED sink config rc = %d\n", rc); |
| 2203 | return rc; |
David Collins | 8885f79 | 2017-01-26 14:36:34 -0800 | [diff] [blame] | 2204 | } |
| 2205 | |
| 2206 | rc = qpnp_wled_sync_reg_toggle(wled); |
| 2207 | if (rc < 0) { |
| 2208 | dev_err(&wled->pdev->dev, "Failed to toggle sync reg %d\n", rc); |
| 2209 | return rc; |
| 2210 | } |
| 2211 | |
Anirudh Ghayal | ce9914f | 2017-08-31 12:11:06 +0530 | [diff] [blame] | 2212 | rc = qpnp_wled_auto_calibrate_at_init(wled); |
| 2213 | if (rc < 0) |
| 2214 | pr_err("Failed to auto-calibrate at init rc=%d\n", rc); |
| 2215 | |
David Collins | 8885f79 | 2017-01-26 14:36:34 -0800 | [diff] [blame] | 2216 | /* setup ovp and sc irqs */ |
| 2217 | if (wled->ovp_irq >= 0) { |
Kiran Gunda | e464871 | 2018-07-19 15:02:59 +0530 | [diff] [blame] | 2218 | irq_set_status_flags(wled->ovp_irq, IRQ_DISABLE_UNLAZY); |
David Collins | 8885f79 | 2017-01-26 14:36:34 -0800 | [diff] [blame] | 2219 | rc = devm_request_threaded_irq(&wled->pdev->dev, wled->ovp_irq, |
| 2220 | NULL, qpnp_wled_ovp_irq_handler, IRQF_ONESHOT, |
| 2221 | "qpnp_wled_ovp_irq", wled); |
| 2222 | if (rc < 0) { |
| 2223 | dev_err(&wled->pdev->dev, |
| 2224 | "Unable to request ovp(%d) IRQ(err:%d)\n", |
| 2225 | wled->ovp_irq, rc); |
| 2226 | return rc; |
| 2227 | } |
Anirudh Ghayal | 101e4ef | 2017-05-26 16:51:53 +0530 | [diff] [blame] | 2228 | rc = qpnp_wled_read_reg(wled, |
| 2229 | QPNP_WLED_MODULE_EN_REG(wled->ctrl_base), ®); |
| 2230 | /* disable the OVP irq only if the module is not enabled */ |
| 2231 | if (!rc && !(reg & QPNP_WLED_MODULE_EN_MASK)) { |
| 2232 | disable_irq(wled->ovp_irq); |
| 2233 | wled->ovp_irq_disabled = true; |
| 2234 | } |
David Collins | 8885f79 | 2017-01-26 14:36:34 -0800 | [diff] [blame] | 2235 | } |
| 2236 | |
| 2237 | if (wled->sc_irq >= 0) { |
| 2238 | wled->sc_cnt = 0; |
Kiran Gunda | e464871 | 2018-07-19 15:02:59 +0530 | [diff] [blame] | 2239 | irq_set_status_flags(wled->sc_irq, IRQ_DISABLE_UNLAZY); |
David Collins | 8885f79 | 2017-01-26 14:36:34 -0800 | [diff] [blame] | 2240 | rc = devm_request_threaded_irq(&wled->pdev->dev, wled->sc_irq, |
| 2241 | NULL, qpnp_wled_sc_irq_handler, IRQF_ONESHOT, |
| 2242 | "qpnp_wled_sc_irq", wled); |
| 2243 | if (rc < 0) { |
| 2244 | dev_err(&wled->pdev->dev, |
| 2245 | "Unable to request sc(%d) IRQ(err:%d)\n", |
| 2246 | wled->sc_irq, rc); |
| 2247 | return rc; |
| 2248 | } |
| 2249 | |
| 2250 | rc = qpnp_wled_read_reg(wled, |
| 2251 | QPNP_WLED_SC_PRO_REG(wled->ctrl_base), ®); |
| 2252 | if (rc < 0) |
| 2253 | return rc; |
| 2254 | reg &= QPNP_WLED_EN_SC_DEB_CYCLES_MASK; |
| 2255 | reg |= 1 << QPNP_WLED_EN_SC_SHIFT; |
| 2256 | |
| 2257 | if (wled->sc_deb_cycles < QPNP_WLED_SC_DEB_CYCLES_MIN) |
| 2258 | wled->sc_deb_cycles = QPNP_WLED_SC_DEB_CYCLES_MIN; |
| 2259 | else if (wled->sc_deb_cycles > QPNP_WLED_SC_DEB_CYCLES_MAX) |
| 2260 | wled->sc_deb_cycles = QPNP_WLED_SC_DEB_CYCLES_MAX; |
| 2261 | temp = fls(wled->sc_deb_cycles) - QPNP_WLED_SC_DEB_CYCLES_SUB; |
| 2262 | reg |= (temp << 1); |
| 2263 | |
| 2264 | if (wled->disp_type_amoled) |
| 2265 | reg |= QPNP_WLED_SC_PRO_EN_DSCHGR; |
| 2266 | |
| 2267 | rc = qpnp_wled_write_reg(wled, |
| 2268 | QPNP_WLED_SC_PRO_REG(wled->ctrl_base), reg); |
| 2269 | if (rc) |
| 2270 | return rc; |
| 2271 | |
| 2272 | if (wled->en_ext_pfet_sc_pro) { |
Subbaraman Narayanamurthy | 50dae7a | 2018-05-18 15:34:19 -0700 | [diff] [blame] | 2273 | if (!(wled->pmic_rev_id->pmic_subtype == PMI8998_SUBTYPE |
| 2274 | && wled->pmic_rev_id->rev4 == |
| 2275 | PMI8998_V2P0_REV4)) { |
| 2276 | reg = QPNP_WLED_EXT_FET_DTEST2; |
| 2277 | rc = qpnp_wled_sec_write_reg(wled, |
David Collins | 8885f79 | 2017-01-26 14:36:34 -0800 | [diff] [blame] | 2278 | QPNP_WLED_TEST1_REG(wled->ctrl_base), |
| 2279 | reg); |
Subbaraman Narayanamurthy | 50dae7a | 2018-05-18 15:34:19 -0700 | [diff] [blame] | 2280 | if (rc) |
| 2281 | return rc; |
| 2282 | } |
David Collins | 8885f79 | 2017-01-26 14:36:34 -0800 | [diff] [blame] | 2283 | } |
| 2284 | } else { |
| 2285 | rc = qpnp_wled_read_reg(wled, |
| 2286 | QPNP_WLED_SC_PRO_REG(wled->ctrl_base), ®); |
| 2287 | if (rc < 0) |
| 2288 | return rc; |
| 2289 | reg &= QPNP_WLED_EN_DEB_CYCLES_MASK; |
| 2290 | |
| 2291 | if (wled->sc_deb_cycles < QPNP_WLED_SC_DEB_CYCLES_MIN) |
| 2292 | wled->sc_deb_cycles = QPNP_WLED_SC_DEB_CYCLES_MIN; |
| 2293 | else if (wled->sc_deb_cycles > QPNP_WLED_SC_DEB_CYCLES_MAX) |
| 2294 | wled->sc_deb_cycles = QPNP_WLED_SC_DEB_CYCLES_MAX; |
| 2295 | temp = fls(wled->sc_deb_cycles) - QPNP_WLED_SC_DEB_CYCLES_SUB; |
| 2296 | reg |= (temp << 1); |
| 2297 | |
| 2298 | rc = qpnp_wled_write_reg(wled, |
| 2299 | QPNP_WLED_SC_PRO_REG(wled->ctrl_base), reg); |
| 2300 | if (rc) |
| 2301 | return rc; |
| 2302 | } |
| 2303 | |
| 2304 | return 0; |
| 2305 | } |
| 2306 | |
| 2307 | /* parse wled dtsi parameters */ |
| 2308 | static int qpnp_wled_parse_dt(struct qpnp_wled *wled) |
| 2309 | { |
| 2310 | struct platform_device *pdev = wled->pdev; |
| 2311 | struct property *prop; |
| 2312 | const char *temp_str; |
| 2313 | u32 temp_val; |
Subbaraman Narayanamurthy | dd68761 | 2017-12-05 17:36:43 -0800 | [diff] [blame] | 2314 | int rc, i, size; |
David Collins | 8885f79 | 2017-01-26 14:36:34 -0800 | [diff] [blame] | 2315 | u8 *strings; |
| 2316 | |
| 2317 | wled->cdev.name = "wled"; |
| 2318 | rc = of_property_read_string(pdev->dev.of_node, |
| 2319 | "linux,name", &wled->cdev.name); |
| 2320 | if (rc && (rc != -EINVAL)) { |
| 2321 | dev_err(&pdev->dev, "Unable to read led name\n"); |
| 2322 | return rc; |
| 2323 | } |
| 2324 | |
| 2325 | wled->cdev.default_trigger = QPNP_WLED_TRIGGER_NONE; |
| 2326 | rc = of_property_read_string(pdev->dev.of_node, "linux,default-trigger", |
| 2327 | &wled->cdev.default_trigger); |
| 2328 | if (rc && (rc != -EINVAL)) { |
| 2329 | dev_err(&pdev->dev, "Unable to read led trigger\n"); |
| 2330 | return rc; |
| 2331 | } |
| 2332 | |
Subbaraman Narayanamurthy | dd68761 | 2017-12-05 17:36:43 -0800 | [diff] [blame] | 2333 | if (of_find_property(pdev->dev.of_node, "qcom,wled-brightness-map", |
| 2334 | NULL)) { |
| 2335 | size = of_property_count_elems_of_size(pdev->dev.of_node, |
| 2336 | "qcom,wled-brightness-map", sizeof(u16)); |
| 2337 | if (size != NUM_DDIC_CODES) { |
| 2338 | pr_err("Invalid WLED brightness map size:%d\n", size); |
| 2339 | return rc; |
| 2340 | } |
| 2341 | |
| 2342 | wled->brt_map_table = devm_kcalloc(&pdev->dev, NUM_DDIC_CODES, |
| 2343 | sizeof(u16), GFP_KERNEL); |
| 2344 | if (!wled->brt_map_table) |
| 2345 | return -ENOMEM; |
| 2346 | |
| 2347 | rc = of_property_read_u16_array(pdev->dev.of_node, |
| 2348 | "qcom,wled-brightness-map", wled->brt_map_table, |
| 2349 | NUM_DDIC_CODES); |
| 2350 | if (rc < 0) { |
| 2351 | pr_err("Error in reading WLED brightness map, rc=%d\n", |
| 2352 | rc); |
| 2353 | return rc; |
| 2354 | } |
| 2355 | |
| 2356 | for (i = 0; i < NUM_DDIC_CODES; i++) { |
| 2357 | if (wled->brt_map_table[i] > WLED_MAX_LEVEL_4095) { |
| 2358 | pr_err("WLED brightness map not in range\n"); |
| 2359 | return -EDOM; |
| 2360 | } |
| 2361 | |
| 2362 | if ((i > 1) && wled->brt_map_table[i] |
| 2363 | < wled->brt_map_table[i - 1]) { |
| 2364 | pr_err("WLED brightness map not in ascending order?\n"); |
| 2365 | return -EDOM; |
| 2366 | } |
| 2367 | } |
| 2368 | } |
| 2369 | |
Subbaraman Narayanamurthy | 3c68f42 | 2017-09-11 20:01:27 -0700 | [diff] [blame] | 2370 | wled->stepper_en = of_property_read_bool(pdev->dev.of_node, |
| 2371 | "qcom,wled-stepper-en"); |
David Collins | 8885f79 | 2017-01-26 14:36:34 -0800 | [diff] [blame] | 2372 | wled->disp_type_amoled = of_property_read_bool(pdev->dev.of_node, |
| 2373 | "qcom,disp-type-amoled"); |
| 2374 | if (wled->disp_type_amoled) { |
| 2375 | wled->vref_psm_mv = QPNP_WLED_VREF_PSM_DFLT_AMOLED_MV; |
| 2376 | rc = of_property_read_u32(pdev->dev.of_node, |
| 2377 | "qcom,vref-psm-mv", &temp_val); |
| 2378 | if (!rc) { |
| 2379 | wled->vref_psm_mv = temp_val; |
| 2380 | } else if (rc != -EINVAL) { |
| 2381 | dev_err(&pdev->dev, "Unable to read vref-psm\n"); |
| 2382 | return rc; |
| 2383 | } |
| 2384 | |
Subbaraman Narayanamurthy | 80ee57af | 2017-10-19 18:38:09 -0700 | [diff] [blame] | 2385 | wled->loop_comp_res_kohm = 320; |
| 2386 | if (wled->pmic_rev_id->pmic_subtype == PMI8998_SUBTYPE || |
| 2387 | wled->pmic_rev_id->pmic_subtype == PM660L_SUBTYPE) |
| 2388 | wled->loop_comp_res_kohm = 300; |
| 2389 | |
David Collins | 8885f79 | 2017-01-26 14:36:34 -0800 | [diff] [blame] | 2390 | rc = of_property_read_u32(pdev->dev.of_node, |
| 2391 | "qcom,loop-comp-res-kohm", &temp_val); |
| 2392 | if (!rc) { |
| 2393 | wled->loop_comp_res_kohm = temp_val; |
| 2394 | } else if (rc != -EINVAL) { |
| 2395 | dev_err(&pdev->dev, "Unable to read loop-comp-res-kohm\n"); |
| 2396 | return rc; |
| 2397 | } |
| 2398 | |
| 2399 | wled->avdd_mode_spmi = of_property_read_bool(pdev->dev.of_node, |
| 2400 | "qcom,avdd-mode-spmi"); |
| 2401 | |
| 2402 | wled->avdd_target_voltage_mv = QPNP_WLED_DFLT_AVDD_MV; |
| 2403 | rc = of_property_read_u32(pdev->dev.of_node, |
| 2404 | "qcom,avdd-target-voltage-mv", &temp_val); |
| 2405 | if (!rc) { |
| 2406 | wled->avdd_target_voltage_mv = temp_val; |
| 2407 | } else if (rc != -EINVAL) { |
| 2408 | dev_err(&pdev->dev, "Unable to read avdd target voltage\n"); |
| 2409 | return rc; |
| 2410 | } |
| 2411 | } |
| 2412 | |
| 2413 | if (wled->disp_type_amoled) { |
| 2414 | if (wled->pmic_rev_id->pmic_subtype == PMI8998_SUBTYPE || |
| 2415 | wled->pmic_rev_id->pmic_subtype == PM660L_SUBTYPE) |
| 2416 | wled->loop_ea_gm = |
| 2417 | QPNP_WLED_LOOP_GM_DFLT_AMOLED_PMI8998; |
| 2418 | else |
| 2419 | wled->loop_ea_gm = |
| 2420 | QPNP_WLED_LOOP_EA_GM_DFLT_AMOLED_PMI8994; |
| 2421 | } else { |
| 2422 | wled->loop_ea_gm = QPNP_WLED_LOOP_GM_DFLT_WLED; |
| 2423 | } |
| 2424 | |
| 2425 | rc = of_property_read_u32(pdev->dev.of_node, |
| 2426 | "qcom,loop-ea-gm", &temp_val); |
| 2427 | if (!rc) { |
| 2428 | wled->loop_ea_gm = temp_val; |
| 2429 | } else if (rc != -EINVAL) { |
| 2430 | dev_err(&pdev->dev, "Unable to read loop-ea-gm\n"); |
| 2431 | return rc; |
| 2432 | } |
| 2433 | |
| 2434 | if (wled->pmic_rev_id->pmic_subtype == PMI8998_SUBTYPE || |
| 2435 | wled->pmic_rev_id->pmic_subtype == PM660L_SUBTYPE) { |
| 2436 | wled->loop_auto_gm_en = |
| 2437 | of_property_read_bool(pdev->dev.of_node, |
| 2438 | "qcom,loop-auto-gm-en"); |
| 2439 | wled->loop_auto_gm_thresh = QPNP_WLED_LOOP_AUTO_GM_DFLT_THRESH; |
| 2440 | rc = of_property_read_u8(pdev->dev.of_node, |
| 2441 | "qcom,loop-auto-gm-thresh", |
| 2442 | &wled->loop_auto_gm_thresh); |
| 2443 | if (rc && rc != -EINVAL) { |
| 2444 | dev_err(&pdev->dev, |
| 2445 | "Unable to read loop-auto-gm-thresh\n"); |
| 2446 | return rc; |
| 2447 | } |
| 2448 | } |
| 2449 | |
| 2450 | if (wled->pmic_rev_id->pmic_subtype == PMI8998_SUBTYPE || |
| 2451 | wled->pmic_rev_id->pmic_subtype == PM660L_SUBTYPE) { |
| 2452 | |
Anirudh Ghayal | 39526a2 | 2017-10-11 19:15:24 +0530 | [diff] [blame] | 2453 | if (wled->pmic_rev_id->pmic_subtype == PMI8998_SUBTYPE && |
| 2454 | wled->pmic_rev_id->rev4 == PMI8998_V2P0_REV4) |
David Collins | 8885f79 | 2017-01-26 14:36:34 -0800 | [diff] [blame] | 2455 | wled->lcd_auto_pfm_en = false; |
| 2456 | else |
| 2457 | wled->lcd_auto_pfm_en = true; |
| 2458 | |
| 2459 | wled->lcd_auto_pfm_thresh = QPNP_WLED_LCD_AUTO_PFM_DFLT_THRESH; |
| 2460 | rc = of_property_read_u8(pdev->dev.of_node, |
| 2461 | "qcom,lcd-auto-pfm-thresh", |
| 2462 | &wled->lcd_auto_pfm_thresh); |
| 2463 | if (rc && rc != -EINVAL) { |
| 2464 | dev_err(&pdev->dev, |
| 2465 | "Unable to read lcd-auto-pfm-thresh\n"); |
| 2466 | return rc; |
| 2467 | } |
| 2468 | |
| 2469 | if (wled->lcd_auto_pfm_thresh > |
| 2470 | QPNP_WLED_LCD_AUTO_PFM_THRESH_MAX) |
| 2471 | wled->lcd_auto_pfm_thresh = |
| 2472 | QPNP_WLED_LCD_AUTO_PFM_THRESH_MAX; |
| 2473 | } |
| 2474 | |
| 2475 | wled->sc_deb_cycles = QPNP_WLED_SC_DEB_CYCLES_DFLT; |
| 2476 | rc = of_property_read_u32(pdev->dev.of_node, |
| 2477 | "qcom,sc-deb-cycles", &temp_val); |
| 2478 | if (!rc) { |
| 2479 | wled->sc_deb_cycles = temp_val; |
| 2480 | } else if (rc != -EINVAL) { |
| 2481 | dev_err(&pdev->dev, "Unable to read sc debounce cycles\n"); |
| 2482 | return rc; |
| 2483 | } |
| 2484 | |
| 2485 | wled->fdbk_op = QPNP_WLED_FDBK_AUTO; |
| 2486 | rc = of_property_read_string(pdev->dev.of_node, |
| 2487 | "qcom,fdbk-output", &temp_str); |
| 2488 | if (!rc) { |
| 2489 | if (strcmp(temp_str, "wled1") == 0) |
| 2490 | wled->fdbk_op = QPNP_WLED_FDBK_WLED1; |
| 2491 | else if (strcmp(temp_str, "wled2") == 0) |
| 2492 | wled->fdbk_op = QPNP_WLED_FDBK_WLED2; |
| 2493 | else if (strcmp(temp_str, "wled3") == 0) |
| 2494 | wled->fdbk_op = QPNP_WLED_FDBK_WLED3; |
| 2495 | else if (strcmp(temp_str, "wled4") == 0) |
| 2496 | wled->fdbk_op = QPNP_WLED_FDBK_WLED4; |
| 2497 | else |
| 2498 | wled->fdbk_op = QPNP_WLED_FDBK_AUTO; |
| 2499 | } else if (rc != -EINVAL) { |
| 2500 | dev_err(&pdev->dev, "Unable to read feedback output\n"); |
| 2501 | return rc; |
| 2502 | } |
| 2503 | |
| 2504 | if (wled->pmic_rev_id->pmic_subtype == PMI8998_SUBTYPE || |
| 2505 | wled->pmic_rev_id->pmic_subtype == PM660L_SUBTYPE) |
| 2506 | wled->vref_uv = vref_setting_pmi8998.default_uv; |
| 2507 | else |
| 2508 | wled->vref_uv = vref_setting_pmi8994.default_uv; |
| 2509 | rc = of_property_read_u32(pdev->dev.of_node, |
| 2510 | "qcom,vref-uv", &temp_val); |
| 2511 | if (!rc) { |
| 2512 | wled->vref_uv = temp_val; |
| 2513 | } else if (rc != -EINVAL) { |
| 2514 | dev_err(&pdev->dev, "Unable to read vref\n"); |
| 2515 | return rc; |
| 2516 | } |
| 2517 | |
Subbaraman Narayanamurthy | 644b09ac | 2017-09-12 15:36:37 -0700 | [diff] [blame] | 2518 | wled->switch_freq_khz = wled->disp_type_amoled ? 1600 : 800; |
David Collins | 8885f79 | 2017-01-26 14:36:34 -0800 | [diff] [blame] | 2519 | rc = of_property_read_u32(pdev->dev.of_node, |
| 2520 | "qcom,switch-freq-khz", &temp_val); |
| 2521 | if (!rc) { |
| 2522 | wled->switch_freq_khz = temp_val; |
| 2523 | } else if (rc != -EINVAL) { |
| 2524 | dev_err(&pdev->dev, "Unable to read switch freq\n"); |
| 2525 | return rc; |
| 2526 | } |
| 2527 | |
| 2528 | if (wled->pmic_rev_id->pmic_subtype == PMI8998_SUBTYPE || |
| 2529 | wled->pmic_rev_id->pmic_subtype == PM660L_SUBTYPE) |
| 2530 | wled->ovp_mv = 29600; |
| 2531 | else |
| 2532 | wled->ovp_mv = 29500; |
| 2533 | rc = of_property_read_u32(pdev->dev.of_node, |
| 2534 | "qcom,ovp-mv", &temp_val); |
| 2535 | if (!rc) { |
| 2536 | wled->ovp_mv = temp_val; |
| 2537 | } else if (rc != -EINVAL) { |
| 2538 | dev_err(&pdev->dev, "Unable to read ovp\n"); |
| 2539 | return rc; |
| 2540 | } |
| 2541 | |
| 2542 | if (wled->pmic_rev_id->pmic_subtype == PMI8998_SUBTYPE || |
| 2543 | wled->pmic_rev_id->pmic_subtype == PM660L_SUBTYPE) { |
| 2544 | if (wled->disp_type_amoled) |
| 2545 | wled->ilim_ma = PMI8998_AMOLED_DFLT_ILIM_MA; |
| 2546 | else |
| 2547 | wled->ilim_ma = PMI8998_WLED_DFLT_ILIM_MA; |
| 2548 | } else { |
| 2549 | if (wled->disp_type_amoled) |
| 2550 | wled->ilim_ma = PMI8994_AMOLED_DFLT_ILIM_MA; |
| 2551 | else |
| 2552 | wled->ilim_ma = PMI8994_WLED_DFLT_ILIM_MA; |
| 2553 | } |
| 2554 | |
| 2555 | rc = of_property_read_u32(pdev->dev.of_node, |
| 2556 | "qcom,ilim-ma", &temp_val); |
| 2557 | if (!rc) { |
| 2558 | wled->ilim_ma = temp_val; |
| 2559 | } else if (rc != -EINVAL) { |
| 2560 | dev_err(&pdev->dev, "Unable to read ilim\n"); |
| 2561 | return rc; |
| 2562 | } |
| 2563 | |
| 2564 | wled->boost_duty_ns = QPNP_WLED_DEF_BOOST_DUTY_NS; |
| 2565 | rc = of_property_read_u32(pdev->dev.of_node, |
| 2566 | "qcom,boost-duty-ns", &temp_val); |
| 2567 | if (!rc) { |
| 2568 | wled->boost_duty_ns = temp_val; |
| 2569 | } else if (rc != -EINVAL) { |
| 2570 | dev_err(&pdev->dev, "Unable to read boost duty\n"); |
| 2571 | return rc; |
| 2572 | } |
| 2573 | |
| 2574 | wled->mod_freq_khz = QPNP_WLED_MOD_FREQ_9600_KHZ; |
| 2575 | rc = of_property_read_u32(pdev->dev.of_node, |
| 2576 | "qcom,mod-freq-khz", &temp_val); |
| 2577 | if (!rc) { |
| 2578 | wled->mod_freq_khz = temp_val; |
| 2579 | } else if (rc != -EINVAL) { |
| 2580 | dev_err(&pdev->dev, "Unable to read modulation freq\n"); |
| 2581 | return rc; |
| 2582 | } |
| 2583 | |
| 2584 | wled->dim_mode = QPNP_WLED_DIM_HYBRID; |
| 2585 | rc = of_property_read_string(pdev->dev.of_node, |
| 2586 | "qcom,dim-mode", &temp_str); |
| 2587 | if (!rc) { |
| 2588 | if (strcmp(temp_str, "analog") == 0) |
| 2589 | wled->dim_mode = QPNP_WLED_DIM_ANALOG; |
| 2590 | else if (strcmp(temp_str, "digital") == 0) |
| 2591 | wled->dim_mode = QPNP_WLED_DIM_DIGITAL; |
| 2592 | else |
| 2593 | wled->dim_mode = QPNP_WLED_DIM_HYBRID; |
| 2594 | } else if (rc != -EINVAL) { |
| 2595 | dev_err(&pdev->dev, "Unable to read dim mode\n"); |
| 2596 | return rc; |
| 2597 | } |
| 2598 | |
| 2599 | if (wled->dim_mode == QPNP_WLED_DIM_HYBRID) { |
| 2600 | wled->hyb_thres = QPNP_WLED_DEF_HYB_THRES; |
| 2601 | rc = of_property_read_u32(pdev->dev.of_node, |
| 2602 | "qcom,hyb-thres", &temp_val); |
| 2603 | if (!rc) { |
| 2604 | wled->hyb_thres = temp_val; |
| 2605 | } else if (rc != -EINVAL) { |
| 2606 | dev_err(&pdev->dev, "Unable to read hyb threshold\n"); |
| 2607 | return rc; |
| 2608 | } |
| 2609 | } |
| 2610 | |
| 2611 | wled->sync_dly_us = QPNP_WLED_DEF_SYNC_DLY_US; |
| 2612 | rc = of_property_read_u32(pdev->dev.of_node, |
| 2613 | "qcom,sync-dly-us", &temp_val); |
| 2614 | if (!rc) { |
| 2615 | wled->sync_dly_us = temp_val; |
| 2616 | } else if (rc != -EINVAL) { |
| 2617 | dev_err(&pdev->dev, "Unable to read sync delay\n"); |
| 2618 | return rc; |
| 2619 | } |
| 2620 | |
| 2621 | wled->fs_curr_ua = QPNP_WLED_FS_CURR_MAX_UA; |
| 2622 | rc = of_property_read_u32(pdev->dev.of_node, |
| 2623 | "qcom,fs-curr-ua", &temp_val); |
| 2624 | if (!rc) { |
| 2625 | wled->fs_curr_ua = temp_val; |
| 2626 | } else if (rc != -EINVAL) { |
| 2627 | dev_err(&pdev->dev, "Unable to read full scale current\n"); |
| 2628 | return rc; |
| 2629 | } |
| 2630 | |
| 2631 | wled->cons_sync_write_delay_us = 0; |
| 2632 | rc = of_property_read_u32(pdev->dev.of_node, |
| 2633 | "qcom,cons-sync-write-delay-us", &temp_val); |
| 2634 | if (!rc) |
| 2635 | wled->cons_sync_write_delay_us = temp_val; |
| 2636 | |
| 2637 | wled->en_9b_dim_res = of_property_read_bool(pdev->dev.of_node, |
| 2638 | "qcom,en-9b-dim-res"); |
| 2639 | wled->en_phase_stag = of_property_read_bool(pdev->dev.of_node, |
| 2640 | "qcom,en-phase-stag"); |
| 2641 | wled->en_cabc = of_property_read_bool(pdev->dev.of_node, |
| 2642 | "qcom,en-cabc"); |
| 2643 | |
Anirudh Ghayal | 101e4ef | 2017-05-26 16:51:53 +0530 | [diff] [blame] | 2644 | if (wled->pmic_rev_id->pmic_subtype == PM660L_SUBTYPE) |
| 2645 | wled->max_strings = QPNP_PM660_WLED_MAX_STRINGS; |
| 2646 | else |
| 2647 | wled->max_strings = QPNP_WLED_MAX_STRINGS; |
| 2648 | |
Kiran Gunda | a81bbb3 | 2018-09-11 15:03:54 +0530 | [diff] [blame] | 2649 | temp_val = 0; |
David Collins | 8885f79 | 2017-01-26 14:36:34 -0800 | [diff] [blame] | 2650 | prop = of_find_property(pdev->dev.of_node, |
| 2651 | "qcom,led-strings-list", &temp_val); |
Kiran Gunda | a81bbb3 | 2018-09-11 15:03:54 +0530 | [diff] [blame] | 2652 | if (!prop || temp_val > QPNP_WLED_MAX_STRINGS) { |
David Collins | 8885f79 | 2017-01-26 14:36:34 -0800 | [diff] [blame] | 2653 | dev_err(&pdev->dev, "Invalid strings info, use default"); |
Anirudh Ghayal | 101e4ef | 2017-05-26 16:51:53 +0530 | [diff] [blame] | 2654 | wled->num_strings = wled->max_strings; |
David Collins | 8885f79 | 2017-01-26 14:36:34 -0800 | [diff] [blame] | 2655 | for (i = 0; i < wled->num_strings; i++) |
| 2656 | wled->strings[i] = i; |
| 2657 | } else { |
| 2658 | wled->num_strings = temp_val; |
| 2659 | strings = prop->value; |
| 2660 | for (i = 0; i < wled->num_strings; ++i) |
| 2661 | wled->strings[i] = strings[i]; |
| 2662 | } |
| 2663 | |
| 2664 | wled->ovp_irq = platform_get_irq_byname(pdev, "ovp-irq"); |
| 2665 | if (wled->ovp_irq < 0) |
| 2666 | dev_dbg(&pdev->dev, "ovp irq is not used\n"); |
| 2667 | |
| 2668 | wled->sc_irq = platform_get_irq_byname(pdev, "sc-irq"); |
| 2669 | if (wled->sc_irq < 0) |
| 2670 | dev_dbg(&pdev->dev, "sc irq is not used\n"); |
| 2671 | |
| 2672 | wled->en_ext_pfet_sc_pro = of_property_read_bool(pdev->dev.of_node, |
| 2673 | "qcom,en-ext-pfet-sc-pro"); |
| 2674 | |
Subbaraman Narayanamurthy | 5569884 | 2017-02-17 15:48:47 -0800 | [diff] [blame] | 2675 | wled->lcd_psm_ctrl = of_property_read_bool(pdev->dev.of_node, |
| 2676 | "qcom,lcd-psm-ctrl"); |
Anirudh Ghayal | 101e4ef | 2017-05-26 16:51:53 +0530 | [diff] [blame] | 2677 | |
| 2678 | wled->auto_calib_enabled = of_property_read_bool(pdev->dev.of_node, |
| 2679 | "qcom,auto-calibration-enable"); |
David Collins | 8885f79 | 2017-01-26 14:36:34 -0800 | [diff] [blame] | 2680 | return 0; |
| 2681 | } |
| 2682 | |
| 2683 | static int qpnp_wled_probe(struct platform_device *pdev) |
| 2684 | { |
| 2685 | struct qpnp_wled *wled; |
| 2686 | struct device_node *revid_node; |
| 2687 | int rc = 0, i; |
| 2688 | const __be32 *prop; |
| 2689 | |
| 2690 | wled = devm_kzalloc(&pdev->dev, sizeof(*wled), GFP_KERNEL); |
| 2691 | if (!wled) |
| 2692 | return -ENOMEM; |
Stephen Boyd | d71c7f6 | 2017-03-20 15:49:04 -0700 | [diff] [blame] | 2693 | |
| 2694 | wled->regmap = dev_get_regmap(pdev->dev.parent, NULL); |
| 2695 | if (!wled->regmap) { |
| 2696 | dev_err(&pdev->dev, "Couldn't get parent's regmap\n"); |
| 2697 | return -EINVAL; |
| 2698 | } |
David Collins | 8885f79 | 2017-01-26 14:36:34 -0800 | [diff] [blame] | 2699 | |
| 2700 | wled->pdev = pdev; |
| 2701 | |
| 2702 | revid_node = of_parse_phandle(pdev->dev.of_node, "qcom,pmic-revid", 0); |
| 2703 | if (!revid_node) { |
| 2704 | pr_err("Missing qcom,pmic-revid property - driver failed\n"); |
| 2705 | return -EINVAL; |
| 2706 | } |
| 2707 | |
| 2708 | wled->pmic_rev_id = get_revid_data(revid_node); |
Subbaraman Narayanamurthy | 3c68f42 | 2017-09-11 20:01:27 -0700 | [diff] [blame] | 2709 | of_node_put(revid_node); |
David Collins | 8885f79 | 2017-01-26 14:36:34 -0800 | [diff] [blame] | 2710 | if (IS_ERR_OR_NULL(wled->pmic_rev_id)) { |
| 2711 | pr_err("Unable to get pmic_revid rc=%ld\n", |
| 2712 | PTR_ERR(wled->pmic_rev_id)); |
| 2713 | /* |
| 2714 | * the revid peripheral must be registered, any failure |
| 2715 | * here only indicates that the rev-id module has not |
| 2716 | * probed yet. |
| 2717 | */ |
| 2718 | return -EPROBE_DEFER; |
| 2719 | } |
| 2720 | |
| 2721 | pr_debug("PMIC subtype %d Digital major %d\n", |
| 2722 | wled->pmic_rev_id->pmic_subtype, wled->pmic_rev_id->rev4); |
| 2723 | |
Subbaraman Narayanamurthy | 3c68f42 | 2017-09-11 20:01:27 -0700 | [diff] [blame] | 2724 | wled->wq = alloc_ordered_workqueue("qpnp_wled_wq", WQ_HIGHPRI); |
| 2725 | if (!wled->wq) { |
| 2726 | pr_err("Unable to alloc workqueue for WLED\n"); |
| 2727 | return -ENOMEM; |
| 2728 | } |
| 2729 | |
David Collins | 8885f79 | 2017-01-26 14:36:34 -0800 | [diff] [blame] | 2730 | prop = of_get_address_by_name(pdev->dev.of_node, QPNP_WLED_SINK_BASE, |
Subbaraman Narayanamurthy | 8b9dd59 | 2017-08-23 18:44:15 -0700 | [diff] [blame] | 2731 | NULL, NULL); |
David Collins | 8885f79 | 2017-01-26 14:36:34 -0800 | [diff] [blame] | 2732 | if (!prop) { |
| 2733 | dev_err(&pdev->dev, "Couldnt find sink's addr rc %d\n", rc); |
| 2734 | return rc; |
| 2735 | } |
| 2736 | wled->sink_base = be32_to_cpu(*prop); |
| 2737 | |
| 2738 | prop = of_get_address_by_name(pdev->dev.of_node, QPNP_WLED_CTRL_BASE, |
Subbaraman Narayanamurthy | 8b9dd59 | 2017-08-23 18:44:15 -0700 | [diff] [blame] | 2739 | NULL, NULL); |
David Collins | 8885f79 | 2017-01-26 14:36:34 -0800 | [diff] [blame] | 2740 | if (!prop) { |
| 2741 | dev_err(&pdev->dev, "Couldnt find ctrl's addr rc = %d\n", rc); |
| 2742 | return rc; |
| 2743 | } |
| 2744 | wled->ctrl_base = be32_to_cpu(*prop); |
| 2745 | |
| 2746 | dev_set_drvdata(&pdev->dev, wled); |
| 2747 | |
| 2748 | rc = qpnp_wled_parse_dt(wled); |
| 2749 | if (rc) { |
| 2750 | dev_err(&pdev->dev, "DT parsing failed\n"); |
| 2751 | return rc; |
| 2752 | } |
| 2753 | |
| 2754 | mutex_init(&wled->bus_lock); |
Anirudh Ghayal | 101e4ef | 2017-05-26 16:51:53 +0530 | [diff] [blame] | 2755 | mutex_init(&wled->lock); |
David Collins | 8885f79 | 2017-01-26 14:36:34 -0800 | [diff] [blame] | 2756 | rc = qpnp_wled_config(wled); |
| 2757 | if (rc) { |
| 2758 | dev_err(&pdev->dev, "wled config failed\n"); |
| 2759 | return rc; |
| 2760 | } |
| 2761 | |
David Collins | 8885f79 | 2017-01-26 14:36:34 -0800 | [diff] [blame] | 2762 | INIT_WORK(&wled->work, qpnp_wled_work); |
| 2763 | wled->ramp_ms = QPNP_WLED_RAMP_DLY_MS; |
| 2764 | wled->ramp_step = 1; |
| 2765 | |
| 2766 | wled->cdev.brightness_set = qpnp_wled_set; |
| 2767 | wled->cdev.brightness_get = qpnp_wled_get; |
| 2768 | |
| 2769 | wled->cdev.max_brightness = WLED_MAX_LEVEL_4095; |
| 2770 | |
| 2771 | rc = led_classdev_register(&pdev->dev, &wled->cdev); |
| 2772 | if (rc) { |
| 2773 | dev_err(&pdev->dev, "wled registration failed(%d)\n", rc); |
| 2774 | goto wled_register_fail; |
| 2775 | } |
| 2776 | |
| 2777 | for (i = 0; i < ARRAY_SIZE(qpnp_wled_attrs); i++) { |
| 2778 | rc = sysfs_create_file(&wled->cdev.dev->kobj, |
| 2779 | &qpnp_wled_attrs[i].attr); |
| 2780 | if (rc < 0) { |
| 2781 | dev_err(&pdev->dev, "sysfs creation failed\n"); |
| 2782 | goto sysfs_fail; |
| 2783 | } |
| 2784 | } |
| 2785 | |
| 2786 | return 0; |
| 2787 | |
| 2788 | sysfs_fail: |
| 2789 | for (i--; i >= 0; i--) |
| 2790 | sysfs_remove_file(&wled->cdev.dev->kobj, |
| 2791 | &qpnp_wled_attrs[i].attr); |
| 2792 | led_classdev_unregister(&wled->cdev); |
| 2793 | wled_register_fail: |
| 2794 | cancel_work_sync(&wled->work); |
Subbaraman Narayanamurthy | 3c68f42 | 2017-09-11 20:01:27 -0700 | [diff] [blame] | 2795 | destroy_workqueue(wled->wq); |
David Collins | 8885f79 | 2017-01-26 14:36:34 -0800 | [diff] [blame] | 2796 | mutex_destroy(&wled->lock); |
| 2797 | return rc; |
| 2798 | } |
| 2799 | |
| 2800 | static int qpnp_wled_remove(struct platform_device *pdev) |
| 2801 | { |
| 2802 | struct qpnp_wled *wled = dev_get_drvdata(&pdev->dev); |
| 2803 | int i; |
| 2804 | |
| 2805 | for (i = 0; i < ARRAY_SIZE(qpnp_wled_attrs); i++) |
| 2806 | sysfs_remove_file(&wled->cdev.dev->kobj, |
| 2807 | &qpnp_wled_attrs[i].attr); |
| 2808 | |
| 2809 | led_classdev_unregister(&wled->cdev); |
| 2810 | cancel_work_sync(&wled->work); |
Subbaraman Narayanamurthy | 3c68f42 | 2017-09-11 20:01:27 -0700 | [diff] [blame] | 2811 | destroy_workqueue(wled->wq); |
David Collins | 8885f79 | 2017-01-26 14:36:34 -0800 | [diff] [blame] | 2812 | mutex_destroy(&wled->lock); |
| 2813 | |
| 2814 | return 0; |
| 2815 | } |
| 2816 | |
| 2817 | static const struct of_device_id spmi_match_table[] = { |
| 2818 | { .compatible = "qcom,qpnp-wled",}, |
| 2819 | { }, |
| 2820 | }; |
| 2821 | |
| 2822 | static struct platform_driver qpnp_wled_driver = { |
| 2823 | .driver = { |
| 2824 | .name = "qcom,qpnp-wled", |
| 2825 | .of_match_table = spmi_match_table, |
| 2826 | }, |
| 2827 | .probe = qpnp_wled_probe, |
| 2828 | .remove = qpnp_wled_remove, |
| 2829 | }; |
| 2830 | |
| 2831 | static int __init qpnp_wled_init(void) |
| 2832 | { |
| 2833 | return platform_driver_register(&qpnp_wled_driver); |
| 2834 | } |
Subbaraman Narayanamurthy | 67e30fb | 2017-05-01 16:29:34 -0700 | [diff] [blame] | 2835 | subsys_initcall(qpnp_wled_init); |
David Collins | 8885f79 | 2017-01-26 14:36:34 -0800 | [diff] [blame] | 2836 | |
| 2837 | static void __exit qpnp_wled_exit(void) |
| 2838 | { |
| 2839 | platform_driver_unregister(&qpnp_wled_driver); |
| 2840 | } |
| 2841 | module_exit(qpnp_wled_exit); |
| 2842 | |
| 2843 | MODULE_DESCRIPTION("QPNP WLED driver"); |
| 2844 | MODULE_LICENSE("GPL v2"); |
| 2845 | MODULE_ALIAS("leds:leds-qpnp-wled"); |