David Collins | 8885f79 | 2017-01-26 14:36:34 -0800 | [diff] [blame] | 1 | /* Copyright (c) 2014-2017, The Linux Foundation. All rights reserved. |
| 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> |
| 25 | #include <linux/err.h> |
| 26 | #include <linux/delay.h> |
| 27 | #include <linux/leds-qpnp-wled.h> |
| 28 | #include <linux/qpnp/qpnp-revid.h> |
| 29 | |
| 30 | /* base addresses */ |
| 31 | #define QPNP_WLED_CTRL_BASE "qpnp-wled-ctrl-base" |
| 32 | #define QPNP_WLED_SINK_BASE "qpnp-wled-sink-base" |
| 33 | |
| 34 | /* ctrl registers */ |
| 35 | #define QPNP_WLED_FAULT_STATUS(b) (b + 0x08) |
Subbaraman Narayanamurthy | b5ae318 | 2017-02-17 15:14:06 -0800 | [diff] [blame] | 36 | #define QPNP_WLED_INT_RT_STS(b) (b + 0x10) |
David Collins | 8885f79 | 2017-01-26 14:36:34 -0800 | [diff] [blame] | 37 | #define QPNP_WLED_EN_REG(b) (b + 0x46) |
| 38 | #define QPNP_WLED_FDBK_OP_REG(b) (b + 0x48) |
| 39 | #define QPNP_WLED_VREF_REG(b) (b + 0x49) |
| 40 | #define QPNP_WLED_BOOST_DUTY_REG(b) (b + 0x4B) |
| 41 | #define QPNP_WLED_SWITCH_FREQ_REG(b) (b + 0x4C) |
| 42 | #define QPNP_WLED_OVP_REG(b) (b + 0x4D) |
| 43 | #define QPNP_WLED_ILIM_REG(b) (b + 0x4E) |
| 44 | #define QPNP_WLED_AMOLED_VOUT_REG(b) (b + 0x4F) |
| 45 | #define QPNP_WLED_SOFTSTART_RAMP_DLY(b) (b + 0x53) |
| 46 | #define QPNP_WLED_VLOOP_COMP_RES_REG(b) (b + 0x55) |
| 47 | #define QPNP_WLED_VLOOP_COMP_GM_REG(b) (b + 0x56) |
Subbaraman Narayanamurthy | 5569884 | 2017-02-17 15:48:47 -0800 | [diff] [blame] | 48 | #define QPNP_WLED_EN_PSM_REG(b) (b + 0x5A) |
David Collins | 8885f79 | 2017-01-26 14:36:34 -0800 | [diff] [blame] | 49 | #define QPNP_WLED_PSM_CTRL_REG(b) (b + 0x5B) |
| 50 | #define QPNP_WLED_LCD_AUTO_PFM_REG(b) (b + 0x5C) |
| 51 | #define QPNP_WLED_SC_PRO_REG(b) (b + 0x5E) |
| 52 | #define QPNP_WLED_SWIRE_AVDD_REG(b) (b + 0x5F) |
| 53 | #define QPNP_WLED_CTRL_SPARE_REG(b) (b + 0xDF) |
| 54 | #define QPNP_WLED_TEST1_REG(b) (b + 0xE2) |
| 55 | #define QPNP_WLED_TEST4_REG(b) (b + 0xE5) |
| 56 | #define QPNP_WLED_REF_7P7_TRIM_REG(b) (b + 0xF2) |
| 57 | |
| 58 | #define QPNP_WLED_7P7_TRIM_MASK GENMASK(3, 0) |
| 59 | #define QPNP_WLED_EN_MASK 0x7F |
| 60 | #define QPNP_WLED_EN_SHIFT 7 |
| 61 | #define QPNP_WLED_FDBK_OP_MASK 0xF8 |
| 62 | #define QPNP_WLED_VREF_MASK GENMASK(3, 0) |
| 63 | |
| 64 | #define QPNP_WLED_VLOOP_COMP_RES_MASK 0xF0 |
| 65 | #define QPNP_WLED_VLOOP_COMP_RES_OVERWRITE 0x80 |
| 66 | #define QPNP_WLED_LOOP_COMP_RES_DFLT_AMOLED_KOHM 320 |
| 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 |
| 109 | #define QPNP_WLED_SWITCH_FREQ_MASK 0x70 |
| 110 | #define QPNP_WLED_SWITCH_FREQ_800_KHZ 800 |
| 111 | #define QPNP_WLED_SWITCH_FREQ_1600_KHZ 1600 |
| 112 | #define QPNP_WLED_SWITCH_FREQ_OVERWRITE 0x80 |
| 113 | #define QPNP_WLED_OVP_MASK GENMASK(1, 0) |
| 114 | #define QPNP_WLED_TEST4_EN_DEB_BYPASS_ILIM_BIT BIT(6) |
| 115 | #define QPNP_WLED_TEST4_EN_SH_FOR_SS_BIT BIT(5) |
| 116 | #define QPNP_WLED_TEST4_EN_CLAMP_BIT BIT(4) |
| 117 | #define QPNP_WLED_TEST4_EN_SOFT_START_BIT BIT(1) |
| 118 | #define QPNP_WLED_TEST4_EN_VREF_UP \ |
| 119 | (QPNP_WLED_TEST4_EN_SH_FOR_SS_BIT | \ |
| 120 | QPNP_WLED_TEST4_EN_CLAMP_BIT | \ |
| 121 | QPNP_WLED_TEST4_EN_SOFT_START_BIT) |
| 122 | #define QPNP_WLED_TEST4_EN_IIND_UP 0x1 |
Subbaraman Narayanamurthy | b5ae318 | 2017-02-17 15:14:06 -0800 | [diff] [blame] | 123 | #define QPNP_WLED_ILIM_FAULT_BIT BIT(0) |
| 124 | #define QPNP_WLED_OVP_FAULT_BIT BIT(1) |
| 125 | #define QPNP_WLED_SC_FAULT_BIT BIT(2) |
David Collins | 8885f79 | 2017-01-26 14:36:34 -0800 | [diff] [blame] | 126 | |
| 127 | /* sink registers */ |
| 128 | #define QPNP_WLED_CURR_SINK_REG(b) (b + 0x46) |
| 129 | #define QPNP_WLED_SYNC_REG(b) (b + 0x47) |
| 130 | #define QPNP_WLED_MOD_REG(b) (b + 0x4A) |
| 131 | #define QPNP_WLED_HYB_THRES_REG(b) (b + 0x4B) |
| 132 | #define QPNP_WLED_MOD_EN_REG(b, n) (b + 0x50 + (n * 0x10)) |
| 133 | #define QPNP_WLED_SYNC_DLY_REG(b, n) (QPNP_WLED_MOD_EN_REG(b, n) + 0x01) |
| 134 | #define QPNP_WLED_FS_CURR_REG(b, n) (QPNP_WLED_MOD_EN_REG(b, n) + 0x02) |
| 135 | #define QPNP_WLED_CABC_REG(b, n) (QPNP_WLED_MOD_EN_REG(b, n) + 0x06) |
| 136 | #define QPNP_WLED_BRIGHT_LSB_REG(b, n) (QPNP_WLED_MOD_EN_REG(b, n) + 0x07) |
| 137 | #define QPNP_WLED_BRIGHT_MSB_REG(b, n) (QPNP_WLED_MOD_EN_REG(b, n) + 0x08) |
| 138 | #define QPNP_WLED_SINK_TEST5_REG(b) (b + 0xE6) |
| 139 | |
| 140 | #define QPNP_WLED_MOD_FREQ_1200_KHZ 1200 |
| 141 | #define QPNP_WLED_MOD_FREQ_2400_KHZ 2400 |
| 142 | #define QPNP_WLED_MOD_FREQ_9600_KHZ 9600 |
| 143 | #define QPNP_WLED_MOD_FREQ_19200_KHZ 19200 |
| 144 | #define QPNP_WLED_MOD_FREQ_MASK 0x3F |
| 145 | #define QPNP_WLED_MOD_FREQ_SHIFT 6 |
| 146 | #define QPNP_WLED_ACC_CLK_FREQ_MASK 0xE7 |
| 147 | #define QPNP_WLED_ACC_CLK_FREQ_SHIFT 3 |
| 148 | #define QPNP_WLED_PHASE_STAG_MASK 0xDF |
| 149 | #define QPNP_WLED_PHASE_STAG_SHIFT 5 |
| 150 | #define QPNP_WLED_DIM_RES_MASK 0xFD |
| 151 | #define QPNP_WLED_DIM_RES_SHIFT 1 |
| 152 | #define QPNP_WLED_DIM_HYB_MASK 0xFB |
| 153 | #define QPNP_WLED_DIM_HYB_SHIFT 2 |
| 154 | #define QPNP_WLED_DIM_ANA_MASK 0xFE |
| 155 | #define QPNP_WLED_HYB_THRES_MASK 0xF8 |
| 156 | #define QPNP_WLED_HYB_THRES_MIN 78 |
| 157 | #define QPNP_WLED_DEF_HYB_THRES 625 |
| 158 | #define QPNP_WLED_HYB_THRES_MAX 10000 |
| 159 | #define QPNP_WLED_MOD_EN_MASK 0x7F |
| 160 | #define QPNP_WLED_MOD_EN_SHFT 7 |
| 161 | #define QPNP_WLED_MOD_EN 1 |
| 162 | #define QPNP_WLED_GATE_DRV_MASK 0xFE |
Anirudh Ghayal | 101e4ef | 2017-05-26 16:51:53 +0530 | [diff] [blame^] | 163 | #define QPNP_WLED_SYNC_DLY_MASK GENMASK(2, 0) |
David Collins | 8885f79 | 2017-01-26 14:36:34 -0800 | [diff] [blame] | 164 | #define QPNP_WLED_SYNC_DLY_MIN_US 0 |
| 165 | #define QPNP_WLED_SYNC_DLY_MAX_US 1400 |
| 166 | #define QPNP_WLED_SYNC_DLY_STEP_US 200 |
| 167 | #define QPNP_WLED_DEF_SYNC_DLY_US 400 |
Anirudh Ghayal | 101e4ef | 2017-05-26 16:51:53 +0530 | [diff] [blame^] | 168 | #define QPNP_WLED_FS_CURR_MASK GENMASK(3, 0) |
David Collins | 8885f79 | 2017-01-26 14:36:34 -0800 | [diff] [blame] | 169 | #define QPNP_WLED_FS_CURR_MIN_UA 0 |
| 170 | #define QPNP_WLED_FS_CURR_MAX_UA 30000 |
| 171 | #define QPNP_WLED_FS_CURR_STEP_UA 2500 |
Anirudh Ghayal | 101e4ef | 2017-05-26 16:51:53 +0530 | [diff] [blame^] | 172 | #define QPNP_WLED_CABC_MASK 0x80 |
David Collins | 8885f79 | 2017-01-26 14:36:34 -0800 | [diff] [blame] | 173 | #define QPNP_WLED_CABC_SHIFT 7 |
| 174 | #define QPNP_WLED_CURR_SINK_SHIFT 4 |
Anirudh Ghayal | 101e4ef | 2017-05-26 16:51:53 +0530 | [diff] [blame^] | 175 | #define QPNP_WLED_CURR_SINK_MASK GENMASK(7, 4) |
David Collins | 8885f79 | 2017-01-26 14:36:34 -0800 | [diff] [blame] | 176 | #define QPNP_WLED_BRIGHT_LSB_MASK 0xFF |
| 177 | #define QPNP_WLED_BRIGHT_MSB_SHIFT 8 |
| 178 | #define QPNP_WLED_BRIGHT_MSB_MASK 0x0F |
| 179 | #define QPNP_WLED_SYNC 0x0F |
| 180 | #define QPNP_WLED_SYNC_RESET 0x00 |
| 181 | |
| 182 | #define QPNP_WLED_SINK_TEST5_HYB 0x14 |
| 183 | #define QPNP_WLED_SINK_TEST5_DIG 0x1E |
| 184 | #define QPNP_WLED_SINK_TEST5_HVG_PULL_STR_BIT BIT(3) |
| 185 | |
| 186 | #define QPNP_WLED_SWITCH_FREQ_800_KHZ_CODE 0x0B |
| 187 | #define QPNP_WLED_SWITCH_FREQ_1600_KHZ_CODE 0x05 |
| 188 | |
| 189 | #define QPNP_WLED_DISP_SEL_REG(b) (b + 0x44) |
| 190 | #define QPNP_WLED_MODULE_RDY_REG(b) (b + 0x45) |
| 191 | #define QPNP_WLED_MODULE_EN_REG(b) (b + 0x46) |
| 192 | #define QPNP_WLED_MODULE_RDY_MASK 0x7F |
| 193 | #define QPNP_WLED_MODULE_RDY_SHIFT 7 |
| 194 | #define QPNP_WLED_MODULE_EN_MASK BIT(7) |
| 195 | #define QPNP_WLED_MODULE_EN_SHIFT 7 |
| 196 | #define QPNP_WLED_DISP_SEL_MASK 0x7F |
| 197 | #define QPNP_WLED_DISP_SEL_SHIFT 7 |
| 198 | #define QPNP_WLED_EN_SC_DEB_CYCLES_MASK 0x79 |
| 199 | #define QPNP_WLED_EN_DEB_CYCLES_MASK 0xF9 |
| 200 | #define QPNP_WLED_EN_SC_SHIFT 7 |
| 201 | #define QPNP_WLED_SC_PRO_EN_DSCHGR 0x8 |
| 202 | #define QPNP_WLED_SC_DEB_CYCLES_MIN 2 |
| 203 | #define QPNP_WLED_SC_DEB_CYCLES_MAX 16 |
| 204 | #define QPNP_WLED_SC_DEB_CYCLES_SUB 2 |
| 205 | #define QPNP_WLED_SC_DEB_CYCLES_DFLT 4 |
| 206 | #define QPNP_WLED_EXT_FET_DTEST2 0x09 |
| 207 | |
| 208 | #define QPNP_WLED_SEC_ACCESS_REG(b) (b + 0xD0) |
| 209 | #define QPNP_WLED_SEC_UNLOCK 0xA5 |
| 210 | |
| 211 | #define QPNP_WLED_MAX_STRINGS 4 |
Anirudh Ghayal | 101e4ef | 2017-05-26 16:51:53 +0530 | [diff] [blame^] | 212 | #define QPNP_PM660_WLED_MAX_STRINGS 3 |
David Collins | 8885f79 | 2017-01-26 14:36:34 -0800 | [diff] [blame] | 213 | #define WLED_MAX_LEVEL_4095 4095 |
| 214 | #define QPNP_WLED_RAMP_DLY_MS 20 |
| 215 | #define QPNP_WLED_TRIGGER_NONE "none" |
| 216 | #define QPNP_WLED_STR_SIZE 20 |
| 217 | #define QPNP_WLED_MIN_MSLEEP 20 |
| 218 | #define QPNP_WLED_SC_DLY_MS 20 |
Anirudh Ghayal | 101e4ef | 2017-05-26 16:51:53 +0530 | [diff] [blame^] | 219 | #define QPNP_WLED_SOFT_START_DLY_US 10000 |
David Collins | 8885f79 | 2017-01-26 14:36:34 -0800 | [diff] [blame] | 220 | |
| 221 | #define NUM_SUPPORTED_AVDD_VOLTAGES 6 |
| 222 | #define QPNP_WLED_DFLT_AVDD_MV 7600 |
| 223 | #define QPNP_WLED_AVDD_MIN_MV 5650 |
| 224 | #define QPNP_WLED_AVDD_MAX_MV 7900 |
| 225 | #define QPNP_WLED_AVDD_STEP_MV 150 |
| 226 | #define QPNP_WLED_AVDD_MIN_TRIM_VAL 0x0 |
| 227 | #define QPNP_WLED_AVDD_MAX_TRIM_VAL 0xF |
| 228 | #define QPNP_WLED_AVDD_SEL_SPMI_BIT BIT(7) |
| 229 | #define QPNP_WLED_AVDD_SET_BIT BIT(4) |
| 230 | |
| 231 | #define NUM_SUPPORTED_OVP_THRESHOLDS 4 |
| 232 | #define NUM_SUPPORTED_ILIM_THRESHOLDS 8 |
| 233 | |
| 234 | #define QPNP_WLED_AVDD_MV_TO_REG(val) \ |
| 235 | ((val - QPNP_WLED_AVDD_MIN_MV) / QPNP_WLED_AVDD_STEP_MV) |
| 236 | |
| 237 | /* output feedback mode */ |
| 238 | enum qpnp_wled_fdbk_op { |
| 239 | QPNP_WLED_FDBK_AUTO, |
| 240 | QPNP_WLED_FDBK_WLED1, |
| 241 | QPNP_WLED_FDBK_WLED2, |
| 242 | QPNP_WLED_FDBK_WLED3, |
| 243 | QPNP_WLED_FDBK_WLED4, |
| 244 | }; |
| 245 | |
| 246 | /* dimming modes */ |
| 247 | enum qpnp_wled_dim_mode { |
| 248 | QPNP_WLED_DIM_ANALOG, |
| 249 | QPNP_WLED_DIM_DIGITAL, |
| 250 | QPNP_WLED_DIM_HYBRID, |
| 251 | }; |
| 252 | |
| 253 | /* wled ctrl debug registers */ |
| 254 | static u8 qpnp_wled_ctrl_dbg_regs[] = { |
| 255 | 0x44, 0x46, 0x48, 0x49, 0x4b, 0x4c, 0x4d, 0x4e, 0x50, 0x51, 0x52, 0x53, |
| 256 | 0x54, 0x55, 0x56, 0x57, 0x58, 0x5a, 0x5b, 0x5d, 0x5e, 0xe2 |
| 257 | }; |
| 258 | |
| 259 | /* wled sink debug registers */ |
| 260 | static u8 qpnp_wled_sink_dbg_regs[] = { |
| 261 | 0x46, 0x47, 0x48, 0x4a, 0x4b, |
| 262 | 0x50, 0x51, 0x52, 0x53, 0x56, 0x57, 0x58, |
| 263 | 0x60, 0x61, 0x62, 0x63, 0x66, 0x67, 0x68, |
| 264 | 0x70, 0x71, 0x72, 0x73, 0x76, 0x77, 0x78, |
| 265 | 0x80, 0x81, 0x82, 0x83, 0x86, 0x87, 0x88, |
| 266 | 0xe6, |
| 267 | }; |
| 268 | |
| 269 | static int qpnp_wled_avdd_target_voltages[NUM_SUPPORTED_AVDD_VOLTAGES] = { |
| 270 | 7900, 7600, 7300, 6400, 6100, 5800, |
| 271 | }; |
| 272 | |
| 273 | static u8 qpnp_wled_ovp_reg_settings[NUM_SUPPORTED_AVDD_VOLTAGES] = { |
| 274 | 0x0, 0x0, 0x1, 0x2, 0x2, 0x3, |
| 275 | }; |
| 276 | |
| 277 | static int qpnp_wled_avdd_trim_adjustments[NUM_SUPPORTED_AVDD_VOLTAGES] = { |
| 278 | 3, 0, -2, 7, 3, 3, |
| 279 | }; |
| 280 | |
| 281 | static int qpnp_wled_ovp_thresholds_pmi8994[NUM_SUPPORTED_OVP_THRESHOLDS] = { |
| 282 | 31000, 29500, 19400, 17800, |
| 283 | }; |
| 284 | |
| 285 | static int qpnp_wled_ovp_thresholds_pmi8998[NUM_SUPPORTED_OVP_THRESHOLDS] = { |
| 286 | 31100, 29600, 19600, 18100, |
| 287 | }; |
| 288 | |
| 289 | static int qpnp_wled_ilim_settings_pmi8994[NUM_SUPPORTED_ILIM_THRESHOLDS] = { |
| 290 | 105, 385, 660, 980, 1150, 1420, 1700, 1980, |
| 291 | }; |
| 292 | |
| 293 | static int qpnp_wled_ilim_settings_pmi8998[NUM_SUPPORTED_ILIM_THRESHOLDS] = { |
| 294 | 105, 280, 450, 620, 970, 1150, 1300, 1500, |
| 295 | }; |
| 296 | |
| 297 | struct wled_vref_setting { |
| 298 | u32 min_uv; |
| 299 | u32 max_uv; |
| 300 | u32 step_uv; |
| 301 | u32 default_uv; |
| 302 | }; |
| 303 | |
| 304 | static struct wled_vref_setting vref_setting_pmi8994 = { |
| 305 | 300000, 675000, 25000, 350000, |
| 306 | }; |
| 307 | static struct wled_vref_setting vref_setting_pmi8998 = { |
| 308 | 60000, 397500, 22500, 127500, |
| 309 | }; |
| 310 | |
| 311 | /** |
| 312 | * qpnp_wled - wed data structure |
| 313 | * @ cdev - led class device |
| 314 | * @ pdev - platform device |
| 315 | * @ work - worker for led operation |
| 316 | * @ lock - mutex lock for exclusive access |
| 317 | * @ fdbk_op - output feedback mode |
| 318 | * @ dim_mode - dimming mode |
| 319 | * @ ovp_irq - over voltage protection irq |
| 320 | * @ sc_irq - short circuit irq |
| 321 | * @ sc_cnt - short circuit irq count |
| 322 | * @ avdd_target_voltage_mv - target voltage for AVDD module in mV |
| 323 | * @ ctrl_base - base address for wled ctrl |
| 324 | * @ sink_base - base address for wled sink |
| 325 | * @ mod_freq_khz - modulator frequency in KHZ |
| 326 | * @ hyb_thres - threshold for hybrid dimming |
| 327 | * @ sync_dly_us - sync delay in us |
| 328 | * @ vref_uv - ref voltage in uv |
| 329 | * @ vref_psm_mv - ref psm voltage in mv |
| 330 | * @ loop_comp_res_kohm - control to select the compensation resistor |
| 331 | * @ loop_ea_gm - control to select the gm for the gm stage in control loop |
| 332 | * @ sc_deb_cycles - debounce time for short circuit detection |
| 333 | * @ switch_freq_khz - switching frequency in KHZ |
| 334 | * @ ovp_mv - over voltage protection in mv |
| 335 | * @ ilim_ma - current limiter in ma |
| 336 | * @ boost_duty_ns - boost duty cycle in ns |
| 337 | * @ fs_curr_ua - full scale current in ua |
| 338 | * @ ramp_ms - delay between ramp steps in ms |
| 339 | * @ ramp_step - ramp step size |
| 340 | * @ cons_sync_write_delay_us - delay between two consecutive writes to SYNC |
| 341 | * @ strings - supported list of strings |
| 342 | * @ num_strings - number of strings |
| 343 | * @ loop_auto_gm_thresh - the clamping level for auto gm |
| 344 | * @ lcd_auto_pfm_thresh - the threshold for lcd auto pfm mode |
| 345 | * @ loop_auto_gm_en - select if auto gm is enabled |
| 346 | * @ 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] | 347 | * @ 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] | 348 | * @ avdd_mode_spmi - enable avdd programming via spmi |
| 349 | * @ en_9b_dim_res - enable or disable 9bit dimming |
| 350 | * @ en_phase_stag - enable or disable phase staggering |
| 351 | * @ en_cabc - enable or disable cabc |
| 352 | * @ disp_type_amoled - type of display: LCD/AMOLED |
| 353 | * @ en_ext_pfet_sc_pro - enable sc protection on external pfet |
| 354 | */ |
| 355 | struct qpnp_wled { |
| 356 | struct led_classdev cdev; |
| 357 | struct platform_device *pdev; |
| 358 | struct regmap *regmap; |
| 359 | struct pmic_revid_data *pmic_rev_id; |
| 360 | struct work_struct work; |
| 361 | struct mutex lock; |
| 362 | struct mutex bus_lock; |
| 363 | enum qpnp_wled_fdbk_op fdbk_op; |
| 364 | enum qpnp_wled_dim_mode dim_mode; |
| 365 | int ovp_irq; |
| 366 | int sc_irq; |
| 367 | u32 sc_cnt; |
| 368 | u32 avdd_target_voltage_mv; |
| 369 | u16 ctrl_base; |
| 370 | u16 sink_base; |
| 371 | u16 mod_freq_khz; |
| 372 | u16 hyb_thres; |
| 373 | u16 sync_dly_us; |
| 374 | u32 vref_uv; |
| 375 | u16 vref_psm_mv; |
| 376 | u16 loop_comp_res_kohm; |
| 377 | u16 loop_ea_gm; |
| 378 | u16 sc_deb_cycles; |
| 379 | u16 switch_freq_khz; |
| 380 | u16 ovp_mv; |
| 381 | u16 ilim_ma; |
| 382 | u16 boost_duty_ns; |
| 383 | u16 fs_curr_ua; |
| 384 | u16 ramp_ms; |
| 385 | u16 ramp_step; |
| 386 | u16 cons_sync_write_delay_us; |
Anirudh Ghayal | 101e4ef | 2017-05-26 16:51:53 +0530 | [diff] [blame^] | 387 | u16 auto_calibration_ovp_count; |
| 388 | u16 max_strings; |
David Collins | 8885f79 | 2017-01-26 14:36:34 -0800 | [diff] [blame] | 389 | u8 strings[QPNP_WLED_MAX_STRINGS]; |
| 390 | u8 num_strings; |
| 391 | u8 loop_auto_gm_thresh; |
| 392 | u8 lcd_auto_pfm_thresh; |
| 393 | bool loop_auto_gm_en; |
| 394 | bool lcd_auto_pfm_en; |
Subbaraman Narayanamurthy | 5569884 | 2017-02-17 15:48:47 -0800 | [diff] [blame] | 395 | bool lcd_psm_ctrl; |
David Collins | 8885f79 | 2017-01-26 14:36:34 -0800 | [diff] [blame] | 396 | bool avdd_mode_spmi; |
| 397 | bool en_9b_dim_res; |
| 398 | bool en_phase_stag; |
| 399 | bool en_cabc; |
| 400 | bool disp_type_amoled; |
| 401 | bool en_ext_pfet_sc_pro; |
| 402 | bool prev_state; |
| 403 | bool ovp_irq_disabled; |
Anirudh Ghayal | 101e4ef | 2017-05-26 16:51:53 +0530 | [diff] [blame^] | 404 | bool auto_calib_enabled; |
| 405 | bool auto_calib_done; |
| 406 | ktime_t start_ovp_fault_time; |
David Collins | 8885f79 | 2017-01-26 14:36:34 -0800 | [diff] [blame] | 407 | }; |
| 408 | |
| 409 | /* helper to read a pmic register */ |
| 410 | static int qpnp_wled_read_reg(struct qpnp_wled *wled, u16 addr, u8 *data) |
| 411 | { |
| 412 | int rc; |
| 413 | uint val; |
| 414 | |
| 415 | rc = regmap_read(wled->regmap, addr, &val); |
| 416 | if (rc < 0) { |
| 417 | dev_err(&wled->pdev->dev, |
| 418 | "Error reading address: %x(%d)\n", addr, rc); |
| 419 | return rc; |
| 420 | } |
| 421 | |
| 422 | *data = (u8)val; |
| 423 | return 0; |
| 424 | } |
| 425 | |
| 426 | /* helper to write a pmic register */ |
| 427 | static int qpnp_wled_write_reg(struct qpnp_wled *wled, u16 addr, u8 data) |
| 428 | { |
| 429 | int rc; |
| 430 | |
| 431 | mutex_lock(&wled->bus_lock); |
| 432 | rc = regmap_write(wled->regmap, addr, data); |
| 433 | if (rc < 0) { |
| 434 | dev_err(&wled->pdev->dev, "Error writing address: %x(%d)\n", |
| 435 | addr, rc); |
| 436 | goto out; |
| 437 | } |
| 438 | |
| 439 | dev_dbg(&wled->pdev->dev, "wrote: WLED_0x%x = 0x%x\n", addr, data); |
| 440 | out: |
| 441 | mutex_unlock(&wled->bus_lock); |
| 442 | return rc; |
| 443 | } |
| 444 | |
| 445 | static int qpnp_wled_masked_write_reg(struct qpnp_wled *wled, u16 addr, |
| 446 | u8 mask, u8 data) |
| 447 | { |
| 448 | int rc; |
| 449 | |
| 450 | mutex_lock(&wled->bus_lock); |
| 451 | rc = regmap_update_bits(wled->regmap, addr, mask, data); |
| 452 | if (rc < 0) { |
| 453 | dev_err(&wled->pdev->dev, "Error writing address: %x(%d)\n", |
| 454 | addr, rc); |
| 455 | goto out; |
| 456 | } |
| 457 | |
| 458 | dev_dbg(&wled->pdev->dev, "wrote: WLED_0x%x = 0x%x\n", addr, data); |
| 459 | out: |
| 460 | mutex_unlock(&wled->bus_lock); |
| 461 | return rc; |
| 462 | } |
| 463 | |
| 464 | static int qpnp_wled_sec_write_reg(struct qpnp_wled *wled, u16 addr, u8 data) |
| 465 | { |
| 466 | int rc; |
| 467 | u8 reg = QPNP_WLED_SEC_UNLOCK; |
| 468 | u16 base_addr = addr & 0xFF00; |
| 469 | |
| 470 | mutex_lock(&wled->bus_lock); |
| 471 | rc = regmap_write(wled->regmap, QPNP_WLED_SEC_ACCESS_REG(base_addr), |
| 472 | reg); |
| 473 | if (rc < 0) { |
| 474 | dev_err(&wled->pdev->dev, "Error writing address: %x(%d)\n", |
| 475 | QPNP_WLED_SEC_ACCESS_REG(base_addr), rc); |
| 476 | goto out; |
| 477 | } |
| 478 | |
| 479 | rc = regmap_write(wled->regmap, addr, data); |
| 480 | if (rc < 0) { |
| 481 | dev_err(&wled->pdev->dev, "Error writing address: %x(%d)\n", |
| 482 | addr, rc); |
| 483 | goto out; |
| 484 | } |
| 485 | |
| 486 | dev_dbg(&wled->pdev->dev, "wrote: WLED_0x%x = 0x%x\n", addr, data); |
| 487 | out: |
| 488 | mutex_unlock(&wled->bus_lock); |
| 489 | return rc; |
| 490 | } |
| 491 | |
| 492 | static int qpnp_wled_swire_avdd_config(struct qpnp_wled *wled) |
| 493 | { |
| 494 | int rc; |
| 495 | u8 val; |
| 496 | |
| 497 | if (wled->pmic_rev_id->pmic_subtype != PMI8998_SUBTYPE && |
| 498 | wled->pmic_rev_id->pmic_subtype != PM660L_SUBTYPE) |
| 499 | return 0; |
| 500 | |
| 501 | if (!wled->disp_type_amoled || wled->avdd_mode_spmi) |
| 502 | return 0; |
| 503 | |
| 504 | val = QPNP_WLED_AVDD_MV_TO_REG(wled->avdd_target_voltage_mv); |
| 505 | rc = qpnp_wled_write_reg(wled, |
| 506 | QPNP_WLED_SWIRE_AVDD_REG(wled->ctrl_base), val); |
| 507 | return rc; |
| 508 | } |
| 509 | |
| 510 | static int qpnp_wled_sync_reg_toggle(struct qpnp_wled *wled) |
| 511 | { |
| 512 | int rc; |
| 513 | u8 reg; |
| 514 | |
| 515 | /* sync */ |
| 516 | reg = QPNP_WLED_SYNC; |
| 517 | rc = qpnp_wled_write_reg(wled, QPNP_WLED_SYNC_REG(wled->sink_base), |
| 518 | reg); |
| 519 | if (rc < 0) |
| 520 | return rc; |
| 521 | |
| 522 | if (wled->cons_sync_write_delay_us) |
| 523 | usleep_range(wled->cons_sync_write_delay_us, |
| 524 | wled->cons_sync_write_delay_us + 1); |
| 525 | |
| 526 | reg = QPNP_WLED_SYNC_RESET; |
| 527 | rc = qpnp_wled_write_reg(wled, QPNP_WLED_SYNC_REG(wled->sink_base), |
| 528 | reg); |
| 529 | if (rc < 0) |
| 530 | return rc; |
| 531 | |
| 532 | return 0; |
| 533 | } |
| 534 | |
| 535 | /* set wled to a level of brightness */ |
| 536 | static int qpnp_wled_set_level(struct qpnp_wled *wled, int level) |
| 537 | { |
| 538 | int i, rc; |
| 539 | u8 reg; |
| 540 | |
| 541 | /* set brightness registers */ |
Anirudh Ghayal | 101e4ef | 2017-05-26 16:51:53 +0530 | [diff] [blame^] | 542 | for (i = 0; i < wled->max_strings; i++) { |
David Collins | 8885f79 | 2017-01-26 14:36:34 -0800 | [diff] [blame] | 543 | reg = level & QPNP_WLED_BRIGHT_LSB_MASK; |
| 544 | rc = qpnp_wled_write_reg(wled, |
| 545 | QPNP_WLED_BRIGHT_LSB_REG(wled->sink_base, |
| 546 | wled->strings[i]), reg); |
| 547 | if (rc < 0) |
| 548 | return rc; |
| 549 | |
| 550 | reg = level >> QPNP_WLED_BRIGHT_MSB_SHIFT; |
| 551 | reg = reg & QPNP_WLED_BRIGHT_MSB_MASK; |
| 552 | rc = qpnp_wled_write_reg(wled, |
| 553 | QPNP_WLED_BRIGHT_MSB_REG(wled->sink_base, |
| 554 | wled->strings[i]), reg); |
| 555 | if (rc < 0) |
| 556 | return rc; |
| 557 | } |
| 558 | |
| 559 | rc = qpnp_wled_sync_reg_toggle(wled); |
| 560 | if (rc < 0) { |
| 561 | dev_err(&wled->pdev->dev, "Failed to toggle sync reg %d\n", rc); |
| 562 | return rc; |
| 563 | } |
| 564 | |
| 565 | return 0; |
| 566 | } |
| 567 | |
Subbaraman Narayanamurthy | 5569884 | 2017-02-17 15:48:47 -0800 | [diff] [blame] | 568 | static int qpnp_wled_psm_config(struct qpnp_wled *wled, bool enable) |
| 569 | { |
| 570 | int rc; |
| 571 | |
| 572 | if (!wled->lcd_psm_ctrl) |
| 573 | return 0; |
| 574 | |
| 575 | rc = qpnp_wled_masked_write_reg(wled, |
| 576 | QPNP_WLED_EN_PSM_REG(wled->ctrl_base), |
| 577 | QPNP_WLED_EN_PSM_BIT, |
| 578 | enable ? QPNP_WLED_EN_PSM_BIT : 0); |
| 579 | if (rc < 0) |
| 580 | return rc; |
| 581 | |
| 582 | rc = qpnp_wled_masked_write_reg(wled, |
| 583 | QPNP_WLED_PSM_CTRL_REG(wled->ctrl_base), |
| 584 | QPNP_WLED_PSM_OVERWRITE_BIT, |
| 585 | enable ? QPNP_WLED_PSM_OVERWRITE_BIT : 0); |
| 586 | if (rc < 0) |
| 587 | return rc; |
| 588 | |
| 589 | return 0; |
| 590 | } |
| 591 | |
David Collins | 8885f79 | 2017-01-26 14:36:34 -0800 | [diff] [blame] | 592 | static int qpnp_wled_module_en(struct qpnp_wled *wled, |
| 593 | u16 base_addr, bool state) |
| 594 | { |
| 595 | int rc; |
| 596 | |
| 597 | rc = qpnp_wled_masked_write_reg(wled, |
| 598 | QPNP_WLED_MODULE_EN_REG(base_addr), |
| 599 | QPNP_WLED_MODULE_EN_MASK, |
| 600 | state << QPNP_WLED_MODULE_EN_SHIFT); |
| 601 | if (rc < 0) |
| 602 | return rc; |
| 603 | |
Subbaraman Narayanamurthy | 5569884 | 2017-02-17 15:48:47 -0800 | [diff] [blame] | 604 | /* |
| 605 | * Wait for at least 10ms before enabling OVP fault interrupt after |
| 606 | * enabling the module so that soft start is completed. Also, this |
| 607 | * delay can be used to control PSM during enable when required. Keep |
| 608 | * OVP interrupt disabled when the module is disabled. |
| 609 | */ |
| 610 | if (state) { |
Anirudh Ghayal | 101e4ef | 2017-05-26 16:51:53 +0530 | [diff] [blame^] | 611 | usleep_range(QPNP_WLED_SOFT_START_DLY_US, |
| 612 | QPNP_WLED_SOFT_START_DLY_US + 1000); |
Subbaraman Narayanamurthy | 5569884 | 2017-02-17 15:48:47 -0800 | [diff] [blame] | 613 | rc = qpnp_wled_psm_config(wled, false); |
| 614 | if (rc < 0) |
| 615 | return rc; |
| 616 | |
| 617 | if (wled->ovp_irq > 0 && wled->ovp_irq_disabled) { |
David Collins | 8885f79 | 2017-01-26 14:36:34 -0800 | [diff] [blame] | 618 | enable_irq(wled->ovp_irq); |
| 619 | wled->ovp_irq_disabled = false; |
Subbaraman Narayanamurthy | 5569884 | 2017-02-17 15:48:47 -0800 | [diff] [blame] | 620 | } |
| 621 | } else { |
| 622 | if (wled->ovp_irq > 0 && !wled->ovp_irq_disabled) { |
David Collins | 8885f79 | 2017-01-26 14:36:34 -0800 | [diff] [blame] | 623 | disable_irq(wled->ovp_irq); |
| 624 | wled->ovp_irq_disabled = true; |
| 625 | } |
Subbaraman Narayanamurthy | 5569884 | 2017-02-17 15:48:47 -0800 | [diff] [blame] | 626 | |
| 627 | rc = qpnp_wled_psm_config(wled, true); |
| 628 | if (rc < 0) |
| 629 | return rc; |
David Collins | 8885f79 | 2017-01-26 14:36:34 -0800 | [diff] [blame] | 630 | } |
| 631 | |
| 632 | return 0; |
| 633 | } |
| 634 | |
| 635 | /* sysfs store function for ramp */ |
| 636 | static ssize_t qpnp_wled_ramp_store(struct device *dev, |
| 637 | struct device_attribute *attr, const char *buf, size_t count) |
| 638 | { |
| 639 | struct qpnp_wled *wled = dev_get_drvdata(dev); |
| 640 | int i, rc; |
| 641 | |
| 642 | mutex_lock(&wled->lock); |
| 643 | |
| 644 | if (!wled->cdev.brightness) { |
| 645 | rc = qpnp_wled_module_en(wled, wled->ctrl_base, true); |
| 646 | if (rc) { |
| 647 | dev_err(&wled->pdev->dev, "wled enable failed\n"); |
| 648 | goto unlock_mutex; |
| 649 | } |
| 650 | } |
| 651 | |
| 652 | /* ramp up */ |
| 653 | for (i = 0; i <= wled->cdev.max_brightness;) { |
| 654 | rc = qpnp_wled_set_level(wled, i); |
| 655 | if (rc) { |
| 656 | dev_err(&wled->pdev->dev, "wled set level failed\n"); |
| 657 | goto restore_brightness; |
| 658 | } |
| 659 | |
| 660 | if (wled->ramp_ms < QPNP_WLED_MIN_MSLEEP) |
| 661 | usleep_range(wled->ramp_ms * USEC_PER_MSEC, |
| 662 | wled->ramp_ms * USEC_PER_MSEC); |
| 663 | else |
| 664 | msleep(wled->ramp_ms); |
| 665 | |
| 666 | if (i == wled->cdev.max_brightness) |
| 667 | break; |
| 668 | |
| 669 | i += wled->ramp_step; |
| 670 | if (i > wled->cdev.max_brightness) |
| 671 | i = wled->cdev.max_brightness; |
| 672 | } |
| 673 | |
| 674 | /* ramp down */ |
| 675 | for (i = wled->cdev.max_brightness; i >= 0;) { |
| 676 | rc = qpnp_wled_set_level(wled, i); |
| 677 | if (rc) { |
| 678 | dev_err(&wled->pdev->dev, "wled set level failed\n"); |
| 679 | goto restore_brightness; |
| 680 | } |
| 681 | |
| 682 | if (wled->ramp_ms < QPNP_WLED_MIN_MSLEEP) |
| 683 | usleep_range(wled->ramp_ms * USEC_PER_MSEC, |
| 684 | wled->ramp_ms * USEC_PER_MSEC); |
| 685 | else |
| 686 | msleep(wled->ramp_ms); |
| 687 | |
| 688 | if (i == 0) |
| 689 | break; |
| 690 | |
| 691 | i -= wled->ramp_step; |
| 692 | if (i < 0) |
| 693 | i = 0; |
| 694 | } |
| 695 | |
| 696 | dev_info(&wled->pdev->dev, "wled ramp complete\n"); |
| 697 | |
| 698 | restore_brightness: |
| 699 | /* restore the old brightness */ |
| 700 | qpnp_wled_set_level(wled, wled->cdev.brightness); |
| 701 | if (!wled->cdev.brightness) { |
| 702 | rc = qpnp_wled_module_en(wled, wled->ctrl_base, false); |
| 703 | if (rc) |
| 704 | dev_err(&wled->pdev->dev, "wled enable failed\n"); |
| 705 | } |
| 706 | unlock_mutex: |
| 707 | mutex_unlock(&wled->lock); |
| 708 | |
| 709 | return count; |
| 710 | } |
| 711 | |
| 712 | static int qpnp_wled_dump_regs(struct qpnp_wled *wled, u16 base_addr, |
| 713 | u8 dbg_regs[], u8 size, char *label, |
| 714 | int count, char *buf) |
| 715 | { |
| 716 | int i, rc; |
| 717 | u8 reg; |
| 718 | |
| 719 | for (i = 0; i < size; i++) { |
| 720 | rc = qpnp_wled_read_reg(wled, base_addr + dbg_regs[i], ®); |
| 721 | if (rc < 0) |
| 722 | return rc; |
| 723 | |
| 724 | count += snprintf(buf + count, PAGE_SIZE - count, |
| 725 | "%s: REG_0x%x = 0x%x\n", label, |
| 726 | base_addr + dbg_regs[i], reg); |
| 727 | |
| 728 | if (count >= PAGE_SIZE) |
| 729 | return PAGE_SIZE - 1; |
| 730 | } |
| 731 | |
| 732 | return count; |
| 733 | } |
| 734 | |
| 735 | /* sysfs show function for debug registers */ |
| 736 | static ssize_t qpnp_wled_dump_regs_show(struct device *dev, |
| 737 | struct device_attribute *attr, char *buf) |
| 738 | { |
| 739 | struct qpnp_wled *wled = dev_get_drvdata(dev); |
| 740 | int count = 0; |
| 741 | |
| 742 | count = qpnp_wled_dump_regs(wled, wled->ctrl_base, |
| 743 | qpnp_wled_ctrl_dbg_regs, |
| 744 | ARRAY_SIZE(qpnp_wled_ctrl_dbg_regs), |
| 745 | "wled_ctrl", count, buf); |
| 746 | |
| 747 | if (count < 0 || count == PAGE_SIZE - 1) |
| 748 | return count; |
| 749 | |
| 750 | count = qpnp_wled_dump_regs(wled, wled->sink_base, |
| 751 | qpnp_wled_sink_dbg_regs, |
| 752 | ARRAY_SIZE(qpnp_wled_sink_dbg_regs), |
| 753 | "wled_sink", count, buf); |
| 754 | |
| 755 | if (count < 0 || count == PAGE_SIZE - 1) |
| 756 | return count; |
| 757 | |
| 758 | return count; |
| 759 | } |
| 760 | |
| 761 | /* sysfs show function for ramp delay in each step */ |
| 762 | static ssize_t qpnp_wled_ramp_ms_show(struct device *dev, |
| 763 | struct device_attribute *attr, char *buf) |
| 764 | { |
| 765 | struct qpnp_wled *wled = dev_get_drvdata(dev); |
| 766 | |
| 767 | return snprintf(buf, PAGE_SIZE, "%d\n", wled->ramp_ms); |
| 768 | } |
| 769 | |
| 770 | /* sysfs store function for ramp delay in each step */ |
| 771 | static ssize_t qpnp_wled_ramp_ms_store(struct device *dev, |
| 772 | struct device_attribute *attr, const char *buf, size_t count) |
| 773 | { |
| 774 | struct qpnp_wled *wled = dev_get_drvdata(dev); |
| 775 | int data, rc; |
| 776 | |
| 777 | rc = kstrtoint(buf, 10, &data); |
| 778 | if (rc) |
| 779 | return rc; |
| 780 | |
| 781 | wled->ramp_ms = data; |
| 782 | return count; |
| 783 | } |
| 784 | |
| 785 | /* sysfs show function for ramp step */ |
| 786 | static ssize_t qpnp_wled_ramp_step_show(struct device *dev, |
| 787 | struct device_attribute *attr, char *buf) |
| 788 | { |
| 789 | struct qpnp_wled *wled = dev_get_drvdata(dev); |
| 790 | |
| 791 | return snprintf(buf, PAGE_SIZE, "%d\n", wled->ramp_step); |
| 792 | } |
| 793 | |
| 794 | /* sysfs store function for ramp step */ |
| 795 | static ssize_t qpnp_wled_ramp_step_store(struct device *dev, |
| 796 | struct device_attribute *attr, const char *buf, size_t count) |
| 797 | { |
| 798 | struct qpnp_wled *wled = dev_get_drvdata(dev); |
| 799 | int data, rc; |
| 800 | |
| 801 | rc = kstrtoint(buf, 10, &data); |
| 802 | if (rc) |
| 803 | return rc; |
| 804 | |
| 805 | wled->ramp_step = data; |
| 806 | return count; |
| 807 | } |
| 808 | |
| 809 | /* sysfs show function for dim mode */ |
| 810 | static ssize_t qpnp_wled_dim_mode_show(struct device *dev, |
| 811 | struct device_attribute *attr, char *buf) |
| 812 | { |
| 813 | struct qpnp_wled *wled = dev_get_drvdata(dev); |
| 814 | char *str; |
| 815 | |
| 816 | if (wled->dim_mode == QPNP_WLED_DIM_ANALOG) |
| 817 | str = "analog"; |
| 818 | else if (wled->dim_mode == QPNP_WLED_DIM_DIGITAL) |
| 819 | str = "digital"; |
| 820 | else |
| 821 | str = "hybrid"; |
| 822 | |
| 823 | return snprintf(buf, PAGE_SIZE, "%s\n", str); |
| 824 | } |
| 825 | |
| 826 | /* sysfs store function for dim mode*/ |
| 827 | static ssize_t qpnp_wled_dim_mode_store(struct device *dev, |
| 828 | struct device_attribute *attr, const char *buf, size_t count) |
| 829 | { |
| 830 | struct qpnp_wled *wled = dev_get_drvdata(dev); |
| 831 | char str[QPNP_WLED_STR_SIZE + 1]; |
| 832 | int rc, temp; |
| 833 | u8 reg; |
| 834 | |
| 835 | if (snprintf(str, QPNP_WLED_STR_SIZE, "%s", buf) > QPNP_WLED_STR_SIZE) |
| 836 | return -EINVAL; |
| 837 | |
| 838 | if (strcmp(str, "analog") == 0) |
| 839 | temp = QPNP_WLED_DIM_ANALOG; |
| 840 | else if (strcmp(str, "digital") == 0) |
| 841 | temp = QPNP_WLED_DIM_DIGITAL; |
| 842 | else |
| 843 | temp = QPNP_WLED_DIM_HYBRID; |
| 844 | |
| 845 | if (temp == wled->dim_mode) |
| 846 | return count; |
| 847 | |
| 848 | rc = qpnp_wled_read_reg(wled, QPNP_WLED_MOD_REG(wled->sink_base), ®); |
| 849 | if (rc < 0) |
| 850 | return rc; |
| 851 | |
| 852 | if (temp == QPNP_WLED_DIM_HYBRID) { |
| 853 | reg &= QPNP_WLED_DIM_HYB_MASK; |
| 854 | reg |= (1 << QPNP_WLED_DIM_HYB_SHIFT); |
| 855 | } else { |
| 856 | reg &= QPNP_WLED_DIM_HYB_MASK; |
| 857 | reg |= (0 << QPNP_WLED_DIM_HYB_SHIFT); |
| 858 | reg &= QPNP_WLED_DIM_ANA_MASK; |
| 859 | reg |= temp; |
| 860 | } |
| 861 | |
| 862 | rc = qpnp_wled_write_reg(wled, QPNP_WLED_MOD_REG(wled->sink_base), reg); |
| 863 | if (rc) |
| 864 | return rc; |
| 865 | |
| 866 | wled->dim_mode = temp; |
| 867 | |
| 868 | return count; |
| 869 | } |
| 870 | |
| 871 | /* sysfs show function for full scale current in ua*/ |
| 872 | static ssize_t qpnp_wled_fs_curr_ua_show(struct device *dev, |
| 873 | struct device_attribute *attr, char *buf) |
| 874 | { |
| 875 | struct qpnp_wled *wled = dev_get_drvdata(dev); |
| 876 | |
| 877 | return snprintf(buf, PAGE_SIZE, "%d\n", wled->fs_curr_ua); |
| 878 | } |
| 879 | |
| 880 | /* sysfs store function for full scale current in ua*/ |
| 881 | static ssize_t qpnp_wled_fs_curr_ua_store(struct device *dev, |
| 882 | struct device_attribute *attr, const char *buf, size_t count) |
| 883 | { |
| 884 | struct qpnp_wled *wled = dev_get_drvdata(dev); |
Anirudh Ghayal | 101e4ef | 2017-05-26 16:51:53 +0530 | [diff] [blame^] | 885 | int data, i, rc; |
David Collins | 8885f79 | 2017-01-26 14:36:34 -0800 | [diff] [blame] | 886 | u8 reg; |
| 887 | |
| 888 | rc = kstrtoint(buf, 10, &data); |
| 889 | if (rc) |
| 890 | return rc; |
| 891 | |
Anirudh Ghayal | 101e4ef | 2017-05-26 16:51:53 +0530 | [diff] [blame^] | 892 | for (i = 0; i < wled->max_strings; i++) { |
David Collins | 8885f79 | 2017-01-26 14:36:34 -0800 | [diff] [blame] | 893 | if (data < QPNP_WLED_FS_CURR_MIN_UA) |
| 894 | data = QPNP_WLED_FS_CURR_MIN_UA; |
| 895 | else if (data > QPNP_WLED_FS_CURR_MAX_UA) |
| 896 | data = QPNP_WLED_FS_CURR_MAX_UA; |
| 897 | |
Anirudh Ghayal | 101e4ef | 2017-05-26 16:51:53 +0530 | [diff] [blame^] | 898 | reg = data / QPNP_WLED_FS_CURR_STEP_UA; |
| 899 | rc = qpnp_wled_masked_write_reg(wled, |
| 900 | QPNP_WLED_FS_CURR_REG(wled->sink_base, i), |
| 901 | QPNP_WLED_FS_CURR_MASK, reg); |
David Collins | 8885f79 | 2017-01-26 14:36:34 -0800 | [diff] [blame] | 902 | if (rc < 0) |
| 903 | return rc; |
David Collins | 8885f79 | 2017-01-26 14:36:34 -0800 | [diff] [blame] | 904 | } |
| 905 | |
| 906 | wled->fs_curr_ua = data; |
| 907 | |
| 908 | rc = qpnp_wled_sync_reg_toggle(wled); |
| 909 | if (rc < 0) { |
| 910 | dev_err(&wled->pdev->dev, "Failed to toggle sync reg %d\n", rc); |
| 911 | return rc; |
| 912 | } |
| 913 | |
| 914 | return count; |
| 915 | } |
| 916 | |
| 917 | /* sysfs attributes exported by wled */ |
| 918 | static struct device_attribute qpnp_wled_attrs[] = { |
| 919 | __ATTR(dump_regs, 0664, qpnp_wled_dump_regs_show, NULL), |
| 920 | __ATTR(dim_mode, 0664, qpnp_wled_dim_mode_show, |
| 921 | qpnp_wled_dim_mode_store), |
| 922 | __ATTR(fs_curr_ua, 0664, qpnp_wled_fs_curr_ua_show, |
| 923 | qpnp_wled_fs_curr_ua_store), |
| 924 | __ATTR(start_ramp, 0664, NULL, qpnp_wled_ramp_store), |
| 925 | __ATTR(ramp_ms, 0664, qpnp_wled_ramp_ms_show, qpnp_wled_ramp_ms_store), |
| 926 | __ATTR(ramp_step, 0664, qpnp_wled_ramp_step_show, |
| 927 | qpnp_wled_ramp_step_store), |
| 928 | }; |
| 929 | |
| 930 | /* worker for setting wled brightness */ |
| 931 | static void qpnp_wled_work(struct work_struct *work) |
| 932 | { |
| 933 | struct qpnp_wled *wled; |
| 934 | int level, rc; |
| 935 | |
| 936 | wled = container_of(work, struct qpnp_wled, work); |
| 937 | |
| 938 | level = wled->cdev.brightness; |
| 939 | |
| 940 | mutex_lock(&wled->lock); |
| 941 | |
| 942 | if (level) { |
| 943 | rc = qpnp_wled_set_level(wled, level); |
| 944 | if (rc) { |
| 945 | dev_err(&wled->pdev->dev, "wled set level failed\n"); |
| 946 | goto unlock_mutex; |
| 947 | } |
| 948 | } |
| 949 | |
| 950 | if (!!level != wled->prev_state) { |
| 951 | if (!!level) { |
| 952 | /* |
| 953 | * For AMOLED display in pmi8998, SWIRE_AVDD_DEFAULT has |
| 954 | * to be reconfigured every time the module is enabled. |
| 955 | */ |
| 956 | rc = qpnp_wled_swire_avdd_config(wled); |
| 957 | if (rc < 0) { |
| 958 | pr_err("Write to SWIRE_AVDD_DEFAULT register failed rc:%d\n", |
| 959 | rc); |
| 960 | goto unlock_mutex; |
| 961 | } |
| 962 | } |
| 963 | |
| 964 | rc = qpnp_wled_module_en(wled, wled->ctrl_base, !!level); |
| 965 | if (rc) { |
| 966 | dev_err(&wled->pdev->dev, "wled %sable failed\n", |
| 967 | level ? "en" : "dis"); |
| 968 | goto unlock_mutex; |
| 969 | } |
| 970 | } |
| 971 | |
| 972 | wled->prev_state = !!level; |
| 973 | unlock_mutex: |
| 974 | mutex_unlock(&wled->lock); |
| 975 | } |
| 976 | |
| 977 | /* get api registered with led classdev for wled brightness */ |
| 978 | static enum led_brightness qpnp_wled_get(struct led_classdev *led_cdev) |
| 979 | { |
| 980 | struct qpnp_wled *wled; |
| 981 | |
| 982 | wled = container_of(led_cdev, struct qpnp_wled, cdev); |
| 983 | |
| 984 | return wled->cdev.brightness; |
| 985 | } |
| 986 | |
| 987 | /* set api registered with led classdev for wled brightness */ |
| 988 | static void qpnp_wled_set(struct led_classdev *led_cdev, |
| 989 | enum led_brightness level) |
| 990 | { |
| 991 | struct qpnp_wled *wled; |
| 992 | |
| 993 | wled = container_of(led_cdev, struct qpnp_wled, cdev); |
| 994 | |
| 995 | if (level < LED_OFF) |
| 996 | level = LED_OFF; |
| 997 | else if (level > wled->cdev.max_brightness) |
| 998 | level = wled->cdev.max_brightness; |
| 999 | |
| 1000 | wled->cdev.brightness = level; |
| 1001 | schedule_work(&wled->work); |
| 1002 | } |
| 1003 | |
| 1004 | static int qpnp_wled_set_disp(struct qpnp_wled *wled, u16 base_addr) |
| 1005 | { |
| 1006 | int rc; |
| 1007 | u8 reg; |
| 1008 | |
| 1009 | /* display type */ |
| 1010 | rc = qpnp_wled_read_reg(wled, QPNP_WLED_DISP_SEL_REG(base_addr), ®); |
| 1011 | if (rc < 0) |
| 1012 | return rc; |
| 1013 | |
| 1014 | reg &= QPNP_WLED_DISP_SEL_MASK; |
| 1015 | reg |= (wled->disp_type_amoled << QPNP_WLED_DISP_SEL_SHIFT); |
| 1016 | |
| 1017 | rc = qpnp_wled_sec_write_reg(wled, QPNP_WLED_DISP_SEL_REG(base_addr), |
| 1018 | reg); |
| 1019 | if (rc) |
| 1020 | return rc; |
| 1021 | |
| 1022 | if (wled->disp_type_amoled) { |
| 1023 | /* Configure the PSM CTRL register for AMOLED */ |
| 1024 | if (wled->vref_psm_mv < QPNP_WLED_VREF_PSM_MIN_MV) |
| 1025 | wled->vref_psm_mv = QPNP_WLED_VREF_PSM_MIN_MV; |
| 1026 | else if (wled->vref_psm_mv > QPNP_WLED_VREF_PSM_MAX_MV) |
| 1027 | wled->vref_psm_mv = QPNP_WLED_VREF_PSM_MAX_MV; |
| 1028 | |
| 1029 | rc = qpnp_wled_read_reg(wled, |
| 1030 | QPNP_WLED_PSM_CTRL_REG(wled->ctrl_base), ®); |
| 1031 | if (rc < 0) |
| 1032 | return rc; |
| 1033 | |
| 1034 | reg &= QPNP_WLED_VREF_PSM_MASK; |
| 1035 | reg |= ((wled->vref_psm_mv - QPNP_WLED_VREF_PSM_MIN_MV)/ |
| 1036 | QPNP_WLED_VREF_PSM_STEP_MV); |
Subbaraman Narayanamurthy | 5569884 | 2017-02-17 15:48:47 -0800 | [diff] [blame] | 1037 | reg |= QPNP_WLED_PSM_OVERWRITE_BIT; |
David Collins | 8885f79 | 2017-01-26 14:36:34 -0800 | [diff] [blame] | 1038 | rc = qpnp_wled_write_reg(wled, |
| 1039 | QPNP_WLED_PSM_CTRL_REG(wled->ctrl_base), reg); |
| 1040 | if (rc) |
| 1041 | return rc; |
| 1042 | |
| 1043 | /* Configure the VLOOP COMP RES register for AMOLED */ |
| 1044 | if (wled->loop_comp_res_kohm < QPNP_WLED_LOOP_COMP_RES_MIN_KOHM) |
| 1045 | wled->loop_comp_res_kohm = |
| 1046 | QPNP_WLED_LOOP_COMP_RES_MIN_KOHM; |
| 1047 | else if (wled->loop_comp_res_kohm > |
| 1048 | QPNP_WLED_LOOP_COMP_RES_MAX_KOHM) |
| 1049 | wled->loop_comp_res_kohm = |
| 1050 | QPNP_WLED_LOOP_COMP_RES_MAX_KOHM; |
| 1051 | |
| 1052 | rc = qpnp_wled_read_reg(wled, |
| 1053 | QPNP_WLED_VLOOP_COMP_RES_REG(wled->ctrl_base), |
| 1054 | ®); |
| 1055 | if (rc < 0) |
| 1056 | return rc; |
| 1057 | |
| 1058 | reg &= QPNP_WLED_VLOOP_COMP_RES_MASK; |
| 1059 | reg |= ((wled->loop_comp_res_kohm - |
| 1060 | QPNP_WLED_LOOP_COMP_RES_MIN_KOHM)/ |
| 1061 | QPNP_WLED_LOOP_COMP_RES_STEP_KOHM); |
| 1062 | reg |= QPNP_WLED_VLOOP_COMP_RES_OVERWRITE; |
| 1063 | rc = qpnp_wled_write_reg(wled, |
| 1064 | QPNP_WLED_VLOOP_COMP_RES_REG(wled->ctrl_base), |
| 1065 | reg); |
| 1066 | if (rc) |
| 1067 | return rc; |
| 1068 | |
| 1069 | /* Configure the CTRL TEST4 register for AMOLED */ |
| 1070 | rc = qpnp_wled_read_reg(wled, |
| 1071 | QPNP_WLED_TEST4_REG(wled->ctrl_base), ®); |
| 1072 | if (rc < 0) |
| 1073 | return rc; |
| 1074 | |
| 1075 | reg |= QPNP_WLED_TEST4_EN_IIND_UP; |
| 1076 | rc = qpnp_wled_sec_write_reg(wled, |
| 1077 | QPNP_WLED_TEST4_REG(base_addr), reg); |
| 1078 | if (rc) |
| 1079 | return rc; |
| 1080 | } else { |
| 1081 | /* |
| 1082 | * enable VREF_UP to avoid false ovp on low brightness for LCD |
| 1083 | */ |
| 1084 | reg = QPNP_WLED_TEST4_EN_VREF_UP |
| 1085 | | QPNP_WLED_TEST4_EN_DEB_BYPASS_ILIM_BIT; |
| 1086 | rc = qpnp_wled_sec_write_reg(wled, |
| 1087 | QPNP_WLED_TEST4_REG(base_addr), reg); |
| 1088 | if (rc) |
| 1089 | return rc; |
| 1090 | } |
| 1091 | |
| 1092 | return 0; |
| 1093 | } |
| 1094 | |
Anirudh Ghayal | 101e4ef | 2017-05-26 16:51:53 +0530 | [diff] [blame^] | 1095 | #define AUTO_CALIB_BRIGHTNESS 16 |
| 1096 | static int wled_auto_calibrate(struct qpnp_wled *wled) |
| 1097 | { |
| 1098 | int rc = 0, i; |
| 1099 | u8 reg = 0, sink_config = 0, sink_test = 0, sink_valid = 0, int_sts; |
| 1100 | |
| 1101 | mutex_lock(&wled->lock); |
| 1102 | |
| 1103 | /* disable OVP IRQ */ |
| 1104 | if (wled->ovp_irq > 0 && !wled->ovp_irq_disabled) { |
| 1105 | disable_irq_nosync(wled->ovp_irq); |
| 1106 | wled->ovp_irq_disabled = true; |
| 1107 | } |
| 1108 | |
| 1109 | /* read configured sink configuration */ |
| 1110 | rc = qpnp_wled_read_reg(wled, |
| 1111 | QPNP_WLED_CURR_SINK_REG(wled->sink_base), &sink_config); |
| 1112 | if (rc < 0) { |
| 1113 | pr_err("Failed to read SINK configuration rc=%d\n", rc); |
| 1114 | goto failed_calib; |
| 1115 | } |
| 1116 | |
| 1117 | /* disable the module before starting calibration */ |
| 1118 | rc = qpnp_wled_masked_write_reg(wled, |
| 1119 | QPNP_WLED_MODULE_EN_REG(wled->ctrl_base), |
| 1120 | QPNP_WLED_MODULE_EN_MASK, 0); |
| 1121 | if (rc < 0) { |
| 1122 | pr_err("Failed to disable WLED module rc=%d\n", rc); |
| 1123 | goto failed_calib; |
| 1124 | } |
| 1125 | |
| 1126 | /* set low brightness across all sinks */ |
| 1127 | rc = qpnp_wled_set_level(wled, AUTO_CALIB_BRIGHTNESS); |
| 1128 | if (rc < 0) { |
| 1129 | pr_err("Failed to set brightness for calibration rc=%d\n", rc); |
| 1130 | goto failed_calib; |
| 1131 | } |
| 1132 | |
| 1133 | /* disable all sinks */ |
| 1134 | rc = qpnp_wled_write_reg(wled, |
| 1135 | QPNP_WLED_CURR_SINK_REG(wled->sink_base), 0); |
| 1136 | if (rc < 0) { |
| 1137 | pr_err("Failed to disable all sinks rc=%d\n", rc); |
| 1138 | goto failed_calib; |
| 1139 | } |
| 1140 | |
| 1141 | rc = qpnp_wled_masked_write_reg(wled, |
| 1142 | QPNP_WLED_MODULE_EN_REG(wled->ctrl_base), |
| 1143 | QPNP_WLED_MODULE_EN_MASK, |
| 1144 | QPNP_WLED_MODULE_EN_MASK); |
| 1145 | if (rc < 0) { |
| 1146 | pr_err("Failed to enable WLED module rc=%d\n", rc); |
| 1147 | goto failed_calib; |
| 1148 | } |
| 1149 | /* |
| 1150 | * Delay for the WLED soft-start, check the OVP status |
| 1151 | * only after soft-start is complete |
| 1152 | */ |
| 1153 | usleep_range(QPNP_WLED_SOFT_START_DLY_US, |
| 1154 | QPNP_WLED_SOFT_START_DLY_US + 1000); |
| 1155 | |
| 1156 | /* iterate through the strings one by one */ |
| 1157 | for (i = 0; i < wled->max_strings; i++) { |
| 1158 | sink_test = 1 << (QPNP_WLED_CURR_SINK_SHIFT + i); |
| 1159 | |
| 1160 | /* Enable feedback control */ |
| 1161 | rc = qpnp_wled_write_reg(wled, |
| 1162 | QPNP_WLED_FDBK_OP_REG(wled->ctrl_base), |
| 1163 | i + 1); |
| 1164 | if (rc < 0) { |
| 1165 | pr_err("Failed to enable feedback for SINK %d rc = %d\n", |
| 1166 | i + 1, rc); |
| 1167 | goto failed_calib; |
| 1168 | } |
| 1169 | |
| 1170 | /* enable the sink */ |
| 1171 | rc = qpnp_wled_write_reg(wled, |
| 1172 | QPNP_WLED_CURR_SINK_REG(wled->sink_base), sink_test); |
| 1173 | if (rc < 0) { |
| 1174 | pr_err("Failed to configure SINK %d rc=%d\n", |
| 1175 | i + 1, rc); |
| 1176 | goto failed_calib; |
| 1177 | } |
| 1178 | |
| 1179 | /* delay for WLED soft-start */ |
| 1180 | usleep_range(QPNP_WLED_SOFT_START_DLY_US, |
| 1181 | QPNP_WLED_SOFT_START_DLY_US + 1000); |
| 1182 | |
| 1183 | rc = qpnp_wled_read_reg(wled, |
| 1184 | QPNP_WLED_INT_RT_STS(wled->ctrl_base), &int_sts); |
| 1185 | if (rc < 0) { |
| 1186 | pr_err("Error in reading WLED_INT_RT_STS rc=%d\n", rc); |
| 1187 | goto failed_calib; |
| 1188 | } |
| 1189 | |
| 1190 | if (int_sts & QPNP_WLED_OVP_FAULT_BIT) |
| 1191 | pr_debug("WLED OVP fault detected with SINK %d\n", |
| 1192 | i + 1); |
| 1193 | else |
| 1194 | sink_valid |= sink_test; |
| 1195 | } |
| 1196 | |
| 1197 | if (sink_valid == sink_config) { |
| 1198 | pr_debug("WLED auto-calibration complete, default sink-config=%x OK!\n", |
| 1199 | sink_config); |
| 1200 | } else { |
| 1201 | pr_warn("Invalid WLED default sink config=%x changing it to=%x\n", |
| 1202 | sink_config, sink_valid); |
| 1203 | sink_config = sink_valid; |
| 1204 | } |
| 1205 | |
| 1206 | if (!sink_config) { |
| 1207 | pr_warn("No valid WLED sinks found\n"); |
| 1208 | goto failed_calib; |
| 1209 | } |
| 1210 | |
| 1211 | rc = qpnp_wled_masked_write_reg(wled, |
| 1212 | QPNP_WLED_MODULE_EN_REG(wled->ctrl_base), |
| 1213 | QPNP_WLED_MODULE_EN_MASK, 0); |
| 1214 | if (rc < 0) { |
| 1215 | pr_err("Failed to disable WLED module rc=%d\n", rc); |
| 1216 | goto failed_calib; |
| 1217 | } |
| 1218 | |
| 1219 | /* write the new sink configuration */ |
| 1220 | rc = qpnp_wled_write_reg(wled, |
| 1221 | QPNP_WLED_CURR_SINK_REG(wled->sink_base), sink_config); |
| 1222 | if (rc < 0) { |
| 1223 | pr_err("Failed to reconfigure the default sink rc=%d\n", rc); |
| 1224 | goto failed_calib; |
| 1225 | } |
| 1226 | |
| 1227 | /* MODULATOR_EN setting for valid sinks */ |
| 1228 | for (i = 0; i < wled->max_strings; i++) { |
| 1229 | if (sink_config & (1 << (QPNP_WLED_CURR_SINK_SHIFT + i))) |
| 1230 | reg = (QPNP_WLED_MOD_EN << QPNP_WLED_MOD_EN_SHFT); |
| 1231 | else |
| 1232 | reg = 0x0; /* disable modulator_en for unused sink */ |
| 1233 | |
| 1234 | if (wled->dim_mode == QPNP_WLED_DIM_HYBRID) |
| 1235 | reg &= QPNP_WLED_GATE_DRV_MASK; |
| 1236 | else |
| 1237 | reg |= ~QPNP_WLED_GATE_DRV_MASK; |
| 1238 | |
| 1239 | rc = qpnp_wled_write_reg(wled, |
| 1240 | QPNP_WLED_MOD_EN_REG(wled->sink_base, i), reg); |
| 1241 | if (rc < 0) { |
| 1242 | pr_err("Failed to configure MODULATOR_EN rc=%d\n", rc); |
| 1243 | goto failed_calib; |
| 1244 | } |
| 1245 | } |
| 1246 | |
| 1247 | /* restore the feedback setting */ |
| 1248 | rc = qpnp_wled_write_reg(wled, |
| 1249 | QPNP_WLED_FDBK_OP_REG(wled->ctrl_base), |
| 1250 | wled->fdbk_op); |
| 1251 | if (rc < 0) { |
| 1252 | pr_err("Failed to restore feedback setting rc=%d\n", rc); |
| 1253 | goto failed_calib; |
| 1254 | } |
| 1255 | |
| 1256 | /* restore brightness */ |
| 1257 | rc = qpnp_wled_set_level(wled, wled->cdev.brightness); |
| 1258 | if (rc < 0) { |
| 1259 | pr_err("Failed to set brightness after calibration rc=%d\n", |
| 1260 | rc); |
| 1261 | goto failed_calib; |
| 1262 | } |
| 1263 | |
| 1264 | rc = qpnp_wled_masked_write_reg(wled, |
| 1265 | QPNP_WLED_MODULE_EN_REG(wled->ctrl_base), |
| 1266 | QPNP_WLED_MODULE_EN_MASK, |
| 1267 | QPNP_WLED_MODULE_EN_MASK); |
| 1268 | if (rc < 0) { |
| 1269 | pr_err("Failed to enable WLED module rc=%d\n", rc); |
| 1270 | goto failed_calib; |
| 1271 | } |
| 1272 | |
| 1273 | /* delay for WLED soft-start */ |
| 1274 | usleep_range(QPNP_WLED_SOFT_START_DLY_US, |
| 1275 | QPNP_WLED_SOFT_START_DLY_US + 1000); |
| 1276 | |
| 1277 | failed_calib: |
| 1278 | if (wled->ovp_irq > 0 && wled->ovp_irq_disabled) { |
| 1279 | enable_irq(wled->ovp_irq); |
| 1280 | wled->ovp_irq_disabled = false; |
| 1281 | } |
| 1282 | mutex_unlock(&wled->lock); |
| 1283 | return rc; |
| 1284 | } |
| 1285 | |
| 1286 | #define WLED_AUTO_CAL_OVP_COUNT 5 |
| 1287 | #define WLED_AUTO_CAL_CNT_DLY_US 1000000 /* 1 second */ |
| 1288 | static bool qpnp_wled_auto_cal_required(struct qpnp_wled *wled) |
| 1289 | { |
| 1290 | s64 elapsed_time_us; |
| 1291 | |
| 1292 | /* |
| 1293 | * Check if the OVP fault was an occasional one |
| 1294 | * or if its firing continuously, the latter qualifies |
| 1295 | * for an auto-calibration check. |
| 1296 | */ |
| 1297 | if (!wled->auto_calibration_ovp_count) { |
| 1298 | wled->start_ovp_fault_time = ktime_get(); |
| 1299 | wled->auto_calibration_ovp_count++; |
| 1300 | } else { |
| 1301 | elapsed_time_us = ktime_us_delta(ktime_get(), |
| 1302 | wled->start_ovp_fault_time); |
| 1303 | if (elapsed_time_us > WLED_AUTO_CAL_CNT_DLY_US) |
| 1304 | wled->auto_calibration_ovp_count = 0; |
| 1305 | else |
| 1306 | wled->auto_calibration_ovp_count++; |
| 1307 | |
| 1308 | if (wled->auto_calibration_ovp_count >= |
| 1309 | WLED_AUTO_CAL_OVP_COUNT) { |
| 1310 | wled->auto_calibration_ovp_count = 0; |
| 1311 | return true; |
| 1312 | } |
| 1313 | } |
| 1314 | |
| 1315 | return false; |
| 1316 | } |
| 1317 | |
David Collins | 8885f79 | 2017-01-26 14:36:34 -0800 | [diff] [blame] | 1318 | /* ovp irq handler */ |
| 1319 | static irqreturn_t qpnp_wled_ovp_irq_handler(int irq, void *_wled) |
| 1320 | { |
| 1321 | struct qpnp_wled *wled = _wled; |
| 1322 | int rc; |
Subbaraman Narayanamurthy | b5ae318 | 2017-02-17 15:14:06 -0800 | [diff] [blame] | 1323 | u8 fault_sts, int_sts; |
David Collins | 8885f79 | 2017-01-26 14:36:34 -0800 | [diff] [blame] | 1324 | |
| 1325 | rc = qpnp_wled_read_reg(wled, |
Subbaraman Narayanamurthy | b5ae318 | 2017-02-17 15:14:06 -0800 | [diff] [blame] | 1326 | QPNP_WLED_INT_RT_STS(wled->ctrl_base), &int_sts); |
| 1327 | if (rc < 0) { |
| 1328 | pr_err("Error in reading WLED_INT_RT_STS rc=%d\n", rc); |
| 1329 | return IRQ_HANDLED; |
| 1330 | } |
| 1331 | |
| 1332 | rc = qpnp_wled_read_reg(wled, |
| 1333 | QPNP_WLED_FAULT_STATUS(wled->ctrl_base), &fault_sts); |
David Collins | 8885f79 | 2017-01-26 14:36:34 -0800 | [diff] [blame] | 1334 | if (rc < 0) { |
| 1335 | pr_err("Error in reading WLED_FAULT_STATUS rc=%d\n", rc); |
| 1336 | return IRQ_HANDLED; |
| 1337 | } |
| 1338 | |
Subbaraman Narayanamurthy | b5ae318 | 2017-02-17 15:14:06 -0800 | [diff] [blame] | 1339 | if (fault_sts & (QPNP_WLED_OVP_FAULT_BIT | QPNP_WLED_ILIM_FAULT_BIT)) |
| 1340 | pr_err("WLED OVP fault detected, int_sts=%x fault_sts= %x\n", |
| 1341 | int_sts, fault_sts); |
Anirudh Ghayal | 101e4ef | 2017-05-26 16:51:53 +0530 | [diff] [blame^] | 1342 | |
| 1343 | if (fault_sts & QPNP_WLED_OVP_FAULT_BIT) { |
| 1344 | if (wled->auto_calib_enabled && !wled->auto_calib_done) { |
| 1345 | if (qpnp_wled_auto_cal_required(wled)) { |
| 1346 | rc = wled_auto_calibrate(wled); |
| 1347 | if (rc < 0) { |
| 1348 | pr_err("Failed auto-calibration rc=%d\n", |
| 1349 | rc); |
| 1350 | return IRQ_HANDLED; |
| 1351 | } |
| 1352 | wled->auto_calib_done = true; |
| 1353 | } |
| 1354 | } |
| 1355 | } |
| 1356 | |
David Collins | 8885f79 | 2017-01-26 14:36:34 -0800 | [diff] [blame] | 1357 | return IRQ_HANDLED; |
| 1358 | } |
| 1359 | |
| 1360 | /* short circuit irq handler */ |
| 1361 | static irqreturn_t qpnp_wled_sc_irq_handler(int irq, void *_wled) |
| 1362 | { |
| 1363 | struct qpnp_wled *wled = _wled; |
| 1364 | int rc; |
| 1365 | u8 val; |
| 1366 | |
| 1367 | rc = qpnp_wled_read_reg(wled, |
| 1368 | QPNP_WLED_FAULT_STATUS(wled->ctrl_base), &val); |
| 1369 | if (rc < 0) { |
| 1370 | pr_err("Error in reading WLED_FAULT_STATUS rc=%d\n", rc); |
| 1371 | return IRQ_HANDLED; |
| 1372 | } |
| 1373 | |
| 1374 | pr_err("WLED short circuit detected %d times fault_status=%x\n", |
| 1375 | ++wled->sc_cnt, val); |
| 1376 | mutex_lock(&wled->lock); |
| 1377 | qpnp_wled_module_en(wled, wled->ctrl_base, false); |
| 1378 | msleep(QPNP_WLED_SC_DLY_MS); |
| 1379 | qpnp_wled_module_en(wled, wled->ctrl_base, true); |
| 1380 | mutex_unlock(&wled->lock); |
| 1381 | |
| 1382 | return IRQ_HANDLED; |
| 1383 | } |
| 1384 | |
| 1385 | static bool is_avdd_trim_adjustment_required(struct qpnp_wled *wled) |
| 1386 | { |
| 1387 | int rc; |
| 1388 | u8 reg = 0; |
| 1389 | |
| 1390 | /* |
| 1391 | * AVDD trim adjustment is not required for pmi8998/pm660l and not |
| 1392 | * supported for pmi8994. |
| 1393 | */ |
| 1394 | if (wled->pmic_rev_id->pmic_subtype == PMI8998_SUBTYPE || |
| 1395 | wled->pmic_rev_id->pmic_subtype == PM660L_SUBTYPE || |
| 1396 | wled->pmic_rev_id->pmic_subtype == PMI8994_SUBTYPE) |
| 1397 | return false; |
| 1398 | |
| 1399 | /* |
| 1400 | * Configure TRIM_REG only if disp_type_amoled and it has |
| 1401 | * not already been programmed by bootloader. |
| 1402 | */ |
| 1403 | if (!wled->disp_type_amoled) |
| 1404 | return false; |
| 1405 | |
| 1406 | rc = qpnp_wled_read_reg(wled, |
| 1407 | QPNP_WLED_CTRL_SPARE_REG(wled->ctrl_base), ®); |
| 1408 | if (rc < 0) |
| 1409 | return false; |
| 1410 | |
| 1411 | return !(reg & QPNP_WLED_AVDD_SET_BIT); |
| 1412 | } |
| 1413 | |
| 1414 | static int qpnp_wled_gm_config(struct qpnp_wled *wled) |
| 1415 | { |
| 1416 | int rc; |
| 1417 | u8 mask = 0, reg = 0; |
| 1418 | |
| 1419 | /* Configure the LOOP COMP GM register */ |
| 1420 | if (wled->pmic_rev_id->pmic_subtype == PMI8998_SUBTYPE || |
| 1421 | wled->pmic_rev_id->pmic_subtype == PM660L_SUBTYPE) { |
| 1422 | if (wled->loop_auto_gm_en) |
| 1423 | reg |= QPNP_WLED_VLOOP_COMP_AUTO_GM_EN; |
| 1424 | |
| 1425 | if (wled->loop_auto_gm_thresh > |
| 1426 | QPNP_WLED_LOOP_AUTO_GM_THRESH_MAX) |
| 1427 | wled->loop_auto_gm_thresh = |
| 1428 | QPNP_WLED_LOOP_AUTO_GM_THRESH_MAX; |
| 1429 | |
| 1430 | reg |= wled->loop_auto_gm_thresh << |
| 1431 | QPNP_WLED_VLOOP_COMP_AUTO_GM_THRESH_SHIFT; |
| 1432 | mask |= QPNP_WLED_VLOOP_COMP_AUTO_GM_EN | |
| 1433 | QPNP_WLED_VLOOP_COMP_AUTO_GM_THRESH_MASK; |
| 1434 | } |
| 1435 | |
| 1436 | if (wled->loop_ea_gm < QPNP_WLED_LOOP_EA_GM_MIN) |
| 1437 | wled->loop_ea_gm = QPNP_WLED_LOOP_EA_GM_MIN; |
| 1438 | else if (wled->loop_ea_gm > QPNP_WLED_LOOP_EA_GM_MAX) |
| 1439 | wled->loop_ea_gm = QPNP_WLED_LOOP_EA_GM_MAX; |
| 1440 | |
| 1441 | reg |= wled->loop_ea_gm | QPNP_WLED_VLOOP_COMP_GM_OVERWRITE; |
| 1442 | mask |= QPNP_WLED_VLOOP_COMP_GM_MASK | |
| 1443 | QPNP_WLED_VLOOP_COMP_GM_OVERWRITE; |
| 1444 | |
| 1445 | rc = qpnp_wled_masked_write_reg(wled, |
| 1446 | QPNP_WLED_VLOOP_COMP_GM_REG(wled->ctrl_base), mask, |
| 1447 | reg); |
| 1448 | if (rc) |
| 1449 | pr_err("write VLOOP_COMP_GM_REG failed, rc=%d]\n", rc); |
| 1450 | |
| 1451 | return rc; |
| 1452 | } |
| 1453 | |
| 1454 | static int qpnp_wled_ovp_config(struct qpnp_wled *wled) |
| 1455 | { |
| 1456 | int rc, i, *ovp_table; |
| 1457 | u8 reg; |
| 1458 | |
| 1459 | /* |
| 1460 | * Configure the OVP register based on ovp_mv only if display type is |
| 1461 | * not AMOLED. |
| 1462 | */ |
| 1463 | if (wled->disp_type_amoled) |
| 1464 | return 0; |
| 1465 | |
| 1466 | if (wled->pmic_rev_id->pmic_subtype == PMI8998_SUBTYPE || |
| 1467 | wled->pmic_rev_id->pmic_subtype == PM660L_SUBTYPE) |
| 1468 | ovp_table = qpnp_wled_ovp_thresholds_pmi8998; |
| 1469 | else |
| 1470 | ovp_table = qpnp_wled_ovp_thresholds_pmi8994; |
| 1471 | |
| 1472 | for (i = 0; i < NUM_SUPPORTED_OVP_THRESHOLDS; i++) { |
| 1473 | if (wled->ovp_mv == ovp_table[i]) |
| 1474 | break; |
| 1475 | } |
| 1476 | |
| 1477 | if (i == NUM_SUPPORTED_OVP_THRESHOLDS) { |
| 1478 | dev_err(&wled->pdev->dev, |
| 1479 | "Invalid ovp threshold specified in device tree\n"); |
| 1480 | return -EINVAL; |
| 1481 | } |
| 1482 | |
| 1483 | reg = i & QPNP_WLED_OVP_MASK; |
| 1484 | rc = qpnp_wled_masked_write_reg(wled, |
| 1485 | QPNP_WLED_OVP_REG(wled->ctrl_base), |
| 1486 | QPNP_WLED_OVP_MASK, reg); |
| 1487 | if (rc) |
| 1488 | return rc; |
| 1489 | |
| 1490 | return 0; |
| 1491 | } |
| 1492 | |
| 1493 | static int qpnp_wled_avdd_trim_config(struct qpnp_wled *wled) |
| 1494 | { |
| 1495 | int rc, i; |
| 1496 | u8 reg; |
| 1497 | |
| 1498 | for (i = 0; i < NUM_SUPPORTED_AVDD_VOLTAGES; i++) { |
| 1499 | if (wled->avdd_target_voltage_mv == |
| 1500 | qpnp_wled_avdd_target_voltages[i]) |
| 1501 | break; |
| 1502 | } |
| 1503 | |
| 1504 | if (i == NUM_SUPPORTED_AVDD_VOLTAGES) { |
| 1505 | dev_err(&wled->pdev->dev, |
| 1506 | "Invalid avdd target voltage specified in device tree\n"); |
| 1507 | return -EINVAL; |
| 1508 | } |
| 1509 | |
| 1510 | /* Update WLED_OVP register based on desired target voltage */ |
| 1511 | reg = qpnp_wled_ovp_reg_settings[i]; |
| 1512 | rc = qpnp_wled_masked_write_reg(wled, |
| 1513 | QPNP_WLED_OVP_REG(wled->ctrl_base), |
| 1514 | QPNP_WLED_OVP_MASK, reg); |
| 1515 | if (rc) |
| 1516 | return rc; |
| 1517 | |
| 1518 | /* Update WLED_TRIM register based on desired target voltage */ |
| 1519 | rc = qpnp_wled_read_reg(wled, |
| 1520 | QPNP_WLED_REF_7P7_TRIM_REG(wled->ctrl_base), ®); |
| 1521 | if (rc) |
| 1522 | return rc; |
| 1523 | |
| 1524 | reg += qpnp_wled_avdd_trim_adjustments[i]; |
| 1525 | if ((s8)reg < QPNP_WLED_AVDD_MIN_TRIM_VAL || |
| 1526 | (s8)reg > QPNP_WLED_AVDD_MAX_TRIM_VAL) { |
| 1527 | dev_dbg(&wled->pdev->dev, |
| 1528 | "adjusted trim %d is not within range, capping it\n", |
| 1529 | (s8)reg); |
| 1530 | if ((s8)reg < QPNP_WLED_AVDD_MIN_TRIM_VAL) |
| 1531 | reg = QPNP_WLED_AVDD_MIN_TRIM_VAL; |
| 1532 | else |
| 1533 | reg = QPNP_WLED_AVDD_MAX_TRIM_VAL; |
| 1534 | } |
| 1535 | |
| 1536 | reg &= QPNP_WLED_7P7_TRIM_MASK; |
| 1537 | rc = qpnp_wled_sec_write_reg(wled, |
| 1538 | QPNP_WLED_REF_7P7_TRIM_REG(wled->ctrl_base), reg); |
| 1539 | if (rc < 0) |
| 1540 | dev_err(&wled->pdev->dev, "Write to 7P7_TRIM register failed, rc=%d\n", |
| 1541 | rc); |
| 1542 | return rc; |
| 1543 | } |
| 1544 | |
| 1545 | static int qpnp_wled_avdd_mode_config(struct qpnp_wled *wled) |
| 1546 | { |
| 1547 | int rc; |
| 1548 | u8 reg = 0; |
| 1549 | |
| 1550 | /* |
| 1551 | * At present, configuring the mode to SPMI/SWIRE for controlling |
| 1552 | * AVDD voltage is available only in pmi8998/pm660l. |
| 1553 | */ |
| 1554 | if (wled->pmic_rev_id->pmic_subtype != PMI8998_SUBTYPE && |
| 1555 | wled->pmic_rev_id->pmic_subtype != PM660L_SUBTYPE) |
| 1556 | return 0; |
| 1557 | |
| 1558 | /* AMOLED_VOUT should be configured for AMOLED */ |
| 1559 | if (!wled->disp_type_amoled) |
| 1560 | return 0; |
| 1561 | |
| 1562 | /* Configure avdd register */ |
| 1563 | if (wled->avdd_target_voltage_mv > QPNP_WLED_AVDD_MAX_MV) { |
| 1564 | dev_dbg(&wled->pdev->dev, "Capping avdd target voltage to %d\n", |
| 1565 | QPNP_WLED_AVDD_MAX_MV); |
| 1566 | wled->avdd_target_voltage_mv = QPNP_WLED_AVDD_MAX_MV; |
| 1567 | } else if (wled->avdd_target_voltage_mv < QPNP_WLED_AVDD_MIN_MV) { |
| 1568 | dev_info(&wled->pdev->dev, "Capping avdd target voltage to %d\n", |
| 1569 | QPNP_WLED_AVDD_MIN_MV); |
| 1570 | wled->avdd_target_voltage_mv = QPNP_WLED_AVDD_MIN_MV; |
| 1571 | } |
| 1572 | |
| 1573 | if (wled->avdd_mode_spmi) { |
| 1574 | reg = QPNP_WLED_AVDD_MV_TO_REG(wled->avdd_target_voltage_mv); |
| 1575 | reg |= QPNP_WLED_AVDD_SEL_SPMI_BIT; |
| 1576 | rc = qpnp_wled_write_reg(wled, |
| 1577 | QPNP_WLED_AMOLED_VOUT_REG(wled->ctrl_base), |
| 1578 | reg); |
| 1579 | if (rc < 0) |
| 1580 | pr_err("Write to AMOLED_VOUT register failed, rc=%d\n", |
| 1581 | rc); |
| 1582 | } else { |
| 1583 | rc = qpnp_wled_swire_avdd_config(wled); |
| 1584 | if (rc < 0) |
| 1585 | pr_err("Write to SWIRE_AVDD_DEFAULT register failed rc:%d\n", |
| 1586 | rc); |
| 1587 | } |
| 1588 | |
| 1589 | return rc; |
| 1590 | } |
| 1591 | |
| 1592 | static int qpnp_wled_ilim_config(struct qpnp_wled *wled) |
| 1593 | { |
| 1594 | int rc, i, *ilim_table; |
| 1595 | u8 reg; |
| 1596 | |
| 1597 | if (wled->ilim_ma < PMI8994_WLED_ILIM_MIN_MA) |
| 1598 | wled->ilim_ma = PMI8994_WLED_ILIM_MIN_MA; |
| 1599 | |
| 1600 | if (wled->pmic_rev_id->pmic_subtype == PMI8998_SUBTYPE || |
| 1601 | wled->pmic_rev_id->pmic_subtype == PM660L_SUBTYPE) { |
| 1602 | ilim_table = qpnp_wled_ilim_settings_pmi8998; |
| 1603 | if (wled->ilim_ma > PMI8998_WLED_ILIM_MAX_MA) |
| 1604 | wled->ilim_ma = PMI8998_WLED_ILIM_MAX_MA; |
| 1605 | } else { |
| 1606 | ilim_table = qpnp_wled_ilim_settings_pmi8994; |
| 1607 | if (wled->ilim_ma > PMI8994_WLED_ILIM_MAX_MA) |
| 1608 | wled->ilim_ma = PMI8994_WLED_ILIM_MAX_MA; |
| 1609 | } |
| 1610 | |
| 1611 | for (i = 0; i < NUM_SUPPORTED_ILIM_THRESHOLDS; i++) { |
| 1612 | if (wled->ilim_ma == ilim_table[i]) |
| 1613 | break; |
| 1614 | } |
| 1615 | |
| 1616 | if (i == NUM_SUPPORTED_ILIM_THRESHOLDS) { |
| 1617 | dev_err(&wled->pdev->dev, |
| 1618 | "Invalid ilim threshold specified in device tree\n"); |
| 1619 | return -EINVAL; |
| 1620 | } |
| 1621 | |
| 1622 | reg = (i & QPNP_WLED_ILIM_MASK) | QPNP_WLED_ILIM_OVERWRITE; |
| 1623 | rc = qpnp_wled_masked_write_reg(wled, |
| 1624 | QPNP_WLED_ILIM_REG(wled->ctrl_base), |
| 1625 | QPNP_WLED_ILIM_MASK | QPNP_WLED_ILIM_OVERWRITE, reg); |
| 1626 | if (rc < 0) |
| 1627 | dev_err(&wled->pdev->dev, "Write to ILIM register failed, rc=%d\n", |
| 1628 | rc); |
| 1629 | return rc; |
| 1630 | } |
| 1631 | |
| 1632 | static int qpnp_wled_vref_config(struct qpnp_wled *wled) |
| 1633 | { |
| 1634 | |
| 1635 | struct wled_vref_setting vref_setting; |
| 1636 | int rc; |
| 1637 | u8 reg = 0; |
| 1638 | |
| 1639 | if (wled->pmic_rev_id->pmic_subtype == PMI8998_SUBTYPE || |
| 1640 | wled->pmic_rev_id->pmic_subtype == PM660L_SUBTYPE) |
| 1641 | vref_setting = vref_setting_pmi8998; |
| 1642 | else |
| 1643 | vref_setting = vref_setting_pmi8994; |
| 1644 | |
| 1645 | if (wled->vref_uv < vref_setting.min_uv) |
| 1646 | wled->vref_uv = vref_setting.min_uv; |
| 1647 | else if (wled->vref_uv > vref_setting.max_uv) |
| 1648 | wled->vref_uv = vref_setting.max_uv; |
| 1649 | |
| 1650 | reg |= DIV_ROUND_CLOSEST(wled->vref_uv - vref_setting.min_uv, |
| 1651 | vref_setting.step_uv); |
| 1652 | |
| 1653 | rc = qpnp_wled_masked_write_reg(wled, |
| 1654 | QPNP_WLED_VREF_REG(wled->ctrl_base), |
| 1655 | QPNP_WLED_VREF_MASK, reg); |
| 1656 | if (rc) |
| 1657 | pr_err("Write VREF_REG failed, rc=%d\n", rc); |
| 1658 | |
| 1659 | return rc; |
| 1660 | } |
| 1661 | |
| 1662 | /* Configure WLED registers */ |
| 1663 | static int qpnp_wled_config(struct qpnp_wled *wled) |
| 1664 | { |
| 1665 | int rc, i, temp; |
Anirudh Ghayal | 101e4ef | 2017-05-26 16:51:53 +0530 | [diff] [blame^] | 1666 | u8 reg = 0, sink_en = 0, mask; |
David Collins | 8885f79 | 2017-01-26 14:36:34 -0800 | [diff] [blame] | 1667 | |
| 1668 | /* Configure display type */ |
| 1669 | rc = qpnp_wled_set_disp(wled, wled->ctrl_base); |
| 1670 | if (rc < 0) |
| 1671 | return rc; |
| 1672 | |
| 1673 | /* Configure the FEEDBACK OUTPUT register */ |
| 1674 | rc = qpnp_wled_read_reg(wled, QPNP_WLED_FDBK_OP_REG(wled->ctrl_base), |
| 1675 | ®); |
| 1676 | if (rc < 0) |
| 1677 | return rc; |
| 1678 | reg &= QPNP_WLED_FDBK_OP_MASK; |
| 1679 | reg |= wled->fdbk_op; |
| 1680 | rc = qpnp_wled_write_reg(wled, QPNP_WLED_FDBK_OP_REG(wled->ctrl_base), |
| 1681 | reg); |
| 1682 | if (rc) |
| 1683 | return rc; |
| 1684 | |
| 1685 | /* Configure the VREF register */ |
| 1686 | rc = qpnp_wled_vref_config(wled); |
| 1687 | if (rc < 0) { |
| 1688 | pr_err("Error in configuring wled vref, rc=%d\n", rc); |
| 1689 | return rc; |
| 1690 | } |
| 1691 | |
| 1692 | /* Configure VLOOP_COMP_GM register */ |
| 1693 | rc = qpnp_wled_gm_config(wled); |
| 1694 | if (rc < 0) { |
| 1695 | pr_err("Error in configureing wled gm, rc=%d\n", rc); |
| 1696 | return rc; |
| 1697 | } |
| 1698 | |
| 1699 | /* Configure the ILIM register */ |
| 1700 | rc = qpnp_wled_ilim_config(wled); |
| 1701 | if (rc < 0) { |
| 1702 | pr_err("Error in configuring wled ilim, rc=%d\n", rc); |
| 1703 | return rc; |
| 1704 | } |
| 1705 | |
| 1706 | /* Configure auto PFM mode for LCD mode only */ |
| 1707 | if ((wled->pmic_rev_id->pmic_subtype == PMI8998_SUBTYPE || |
| 1708 | wled->pmic_rev_id->pmic_subtype == PM660L_SUBTYPE) |
| 1709 | && !wled->disp_type_amoled) { |
| 1710 | reg = 0; |
| 1711 | reg |= wled->lcd_auto_pfm_thresh; |
| 1712 | reg |= wled->lcd_auto_pfm_en << |
| 1713 | QPNP_WLED_LCD_AUTO_PFM_EN_SHIFT; |
| 1714 | rc = qpnp_wled_masked_write_reg(wled, |
| 1715 | QPNP_WLED_LCD_AUTO_PFM_REG(wled->ctrl_base), |
| 1716 | QPNP_WLED_LCD_AUTO_PFM_EN_BIT | |
| 1717 | QPNP_WLED_LCD_AUTO_PFM_THRESH_MASK, reg); |
| 1718 | if (rc < 0) { |
| 1719 | pr_err("Write LCD_AUTO_PFM failed, rc=%d\n", rc); |
| 1720 | return rc; |
| 1721 | } |
| 1722 | } |
| 1723 | |
| 1724 | /* Configure the Soft start Ramp delay: for AMOLED - 0,for LCD - 2 */ |
| 1725 | reg = (wled->disp_type_amoled) ? 0 : 2; |
| 1726 | rc = qpnp_wled_write_reg(wled, |
| 1727 | QPNP_WLED_SOFTSTART_RAMP_DLY(wled->ctrl_base), reg); |
| 1728 | if (rc) |
| 1729 | return rc; |
| 1730 | |
| 1731 | /* Configure the MAX BOOST DUTY register */ |
| 1732 | if (wled->boost_duty_ns < QPNP_WLED_BOOST_DUTY_MIN_NS) |
| 1733 | wled->boost_duty_ns = QPNP_WLED_BOOST_DUTY_MIN_NS; |
| 1734 | else if (wled->boost_duty_ns > QPNP_WLED_BOOST_DUTY_MAX_NS) |
| 1735 | wled->boost_duty_ns = QPNP_WLED_BOOST_DUTY_MAX_NS; |
| 1736 | |
| 1737 | rc = qpnp_wled_read_reg(wled, QPNP_WLED_BOOST_DUTY_REG(wled->ctrl_base), |
| 1738 | ®); |
| 1739 | if (rc < 0) |
| 1740 | return rc; |
| 1741 | reg &= QPNP_WLED_BOOST_DUTY_MASK; |
| 1742 | reg |= (wled->boost_duty_ns / QPNP_WLED_BOOST_DUTY_STEP_NS); |
| 1743 | rc = qpnp_wled_write_reg(wled, |
| 1744 | QPNP_WLED_BOOST_DUTY_REG(wled->ctrl_base), reg); |
| 1745 | if (rc) |
| 1746 | return rc; |
| 1747 | |
| 1748 | /* Configure the SWITCHING FREQ register */ |
| 1749 | if (wled->switch_freq_khz == QPNP_WLED_SWITCH_FREQ_1600_KHZ) |
| 1750 | temp = QPNP_WLED_SWITCH_FREQ_1600_KHZ_CODE; |
| 1751 | else |
| 1752 | temp = QPNP_WLED_SWITCH_FREQ_800_KHZ_CODE; |
| 1753 | |
| 1754 | rc = qpnp_wled_read_reg(wled, |
| 1755 | QPNP_WLED_SWITCH_FREQ_REG(wled->ctrl_base), ®); |
| 1756 | if (rc < 0) |
| 1757 | return rc; |
| 1758 | reg &= QPNP_WLED_SWITCH_FREQ_MASK; |
| 1759 | reg |= (temp | QPNP_WLED_SWITCH_FREQ_OVERWRITE); |
| 1760 | rc = qpnp_wled_write_reg(wled, |
| 1761 | QPNP_WLED_SWITCH_FREQ_REG(wled->ctrl_base), reg); |
| 1762 | if (rc) |
| 1763 | return rc; |
| 1764 | |
| 1765 | rc = qpnp_wled_ovp_config(wled); |
| 1766 | if (rc < 0) { |
| 1767 | pr_err("Error in configuring OVP threshold, rc=%d\n", rc); |
| 1768 | return rc; |
| 1769 | } |
| 1770 | |
| 1771 | if (is_avdd_trim_adjustment_required(wled)) { |
| 1772 | rc = qpnp_wled_avdd_trim_config(wled); |
| 1773 | if (rc < 0) |
| 1774 | return rc; |
| 1775 | } |
| 1776 | |
| 1777 | rc = qpnp_wled_avdd_mode_config(wled); |
| 1778 | if (rc < 0) |
| 1779 | return rc; |
| 1780 | |
| 1781 | /* Configure the MODULATION register */ |
| 1782 | if (wled->mod_freq_khz <= QPNP_WLED_MOD_FREQ_1200_KHZ) { |
| 1783 | wled->mod_freq_khz = QPNP_WLED_MOD_FREQ_1200_KHZ; |
| 1784 | temp = 3; |
| 1785 | } else if (wled->mod_freq_khz <= QPNP_WLED_MOD_FREQ_2400_KHZ) { |
| 1786 | wled->mod_freq_khz = QPNP_WLED_MOD_FREQ_2400_KHZ; |
| 1787 | temp = 2; |
| 1788 | } else if (wled->mod_freq_khz <= QPNP_WLED_MOD_FREQ_9600_KHZ) { |
| 1789 | wled->mod_freq_khz = QPNP_WLED_MOD_FREQ_9600_KHZ; |
| 1790 | temp = 1; |
| 1791 | } else if (wled->mod_freq_khz <= QPNP_WLED_MOD_FREQ_19200_KHZ) { |
| 1792 | wled->mod_freq_khz = QPNP_WLED_MOD_FREQ_19200_KHZ; |
| 1793 | temp = 0; |
| 1794 | } else { |
| 1795 | wled->mod_freq_khz = QPNP_WLED_MOD_FREQ_9600_KHZ; |
| 1796 | temp = 1; |
| 1797 | } |
| 1798 | |
| 1799 | rc = qpnp_wled_read_reg(wled, QPNP_WLED_MOD_REG(wled->sink_base), ®); |
| 1800 | if (rc < 0) |
| 1801 | return rc; |
| 1802 | reg &= QPNP_WLED_MOD_FREQ_MASK; |
| 1803 | reg |= (temp << QPNP_WLED_MOD_FREQ_SHIFT); |
| 1804 | |
| 1805 | reg &= QPNP_WLED_PHASE_STAG_MASK; |
| 1806 | reg |= (wled->en_phase_stag << QPNP_WLED_PHASE_STAG_SHIFT); |
| 1807 | |
| 1808 | reg &= QPNP_WLED_ACC_CLK_FREQ_MASK; |
| 1809 | reg |= (temp << QPNP_WLED_ACC_CLK_FREQ_SHIFT); |
| 1810 | |
| 1811 | reg &= QPNP_WLED_DIM_RES_MASK; |
| 1812 | reg |= (wled->en_9b_dim_res << QPNP_WLED_DIM_RES_SHIFT); |
| 1813 | |
| 1814 | if (wled->dim_mode == QPNP_WLED_DIM_HYBRID) { |
| 1815 | reg &= QPNP_WLED_DIM_HYB_MASK; |
| 1816 | reg |= (1 << QPNP_WLED_DIM_HYB_SHIFT); |
| 1817 | } else { |
| 1818 | reg &= QPNP_WLED_DIM_HYB_MASK; |
| 1819 | reg |= (0 << QPNP_WLED_DIM_HYB_SHIFT); |
| 1820 | reg &= QPNP_WLED_DIM_ANA_MASK; |
| 1821 | reg |= wled->dim_mode; |
| 1822 | } |
| 1823 | |
| 1824 | rc = qpnp_wled_write_reg(wled, QPNP_WLED_MOD_REG(wled->sink_base), reg); |
| 1825 | if (rc) |
| 1826 | return rc; |
| 1827 | |
| 1828 | /* Configure the HYBRID THRESHOLD register */ |
| 1829 | if (wled->hyb_thres < QPNP_WLED_HYB_THRES_MIN) |
| 1830 | wled->hyb_thres = QPNP_WLED_HYB_THRES_MIN; |
| 1831 | else if (wled->hyb_thres > QPNP_WLED_HYB_THRES_MAX) |
| 1832 | wled->hyb_thres = QPNP_WLED_HYB_THRES_MAX; |
| 1833 | |
| 1834 | rc = qpnp_wled_read_reg(wled, QPNP_WLED_HYB_THRES_REG(wled->sink_base), |
| 1835 | ®); |
| 1836 | if (rc < 0) |
| 1837 | return rc; |
| 1838 | reg &= QPNP_WLED_HYB_THRES_MASK; |
| 1839 | temp = fls(wled->hyb_thres / QPNP_WLED_HYB_THRES_MIN) - 1; |
| 1840 | reg |= temp; |
| 1841 | rc = qpnp_wled_write_reg(wled, QPNP_WLED_HYB_THRES_REG(wled->sink_base), |
| 1842 | reg); |
| 1843 | if (rc) |
| 1844 | return rc; |
| 1845 | |
| 1846 | /* Configure TEST5 register */ |
| 1847 | if (wled->dim_mode == QPNP_WLED_DIM_DIGITAL) { |
| 1848 | reg = QPNP_WLED_SINK_TEST5_DIG; |
| 1849 | } else { |
| 1850 | reg = QPNP_WLED_SINK_TEST5_HYB; |
| 1851 | if (wled->pmic_rev_id->pmic_subtype == PM660L_SUBTYPE) |
| 1852 | reg |= QPNP_WLED_SINK_TEST5_HVG_PULL_STR_BIT; |
| 1853 | } |
| 1854 | |
| 1855 | rc = qpnp_wled_sec_write_reg(wled, |
| 1856 | QPNP_WLED_SINK_TEST5_REG(wled->sink_base), reg); |
| 1857 | if (rc) |
| 1858 | return rc; |
| 1859 | |
| 1860 | /* disable all current sinks and enable selected strings */ |
| 1861 | reg = 0x00; |
| 1862 | rc = qpnp_wled_write_reg(wled, QPNP_WLED_CURR_SINK_REG(wled->sink_base), |
| 1863 | reg); |
| 1864 | |
Anirudh Ghayal | 101e4ef | 2017-05-26 16:51:53 +0530 | [diff] [blame^] | 1865 | for (i = 0; i < wled->max_strings; i++) { |
| 1866 | /* SYNC DELAY */ |
| 1867 | if (wled->sync_dly_us > QPNP_WLED_SYNC_DLY_MAX_US) |
| 1868 | wled->sync_dly_us = QPNP_WLED_SYNC_DLY_MAX_US; |
| 1869 | |
| 1870 | reg = wled->sync_dly_us / QPNP_WLED_SYNC_DLY_STEP_US; |
| 1871 | mask = QPNP_WLED_SYNC_DLY_MASK; |
| 1872 | rc = qpnp_wled_masked_write_reg(wled, |
| 1873 | QPNP_WLED_SYNC_DLY_REG(wled->sink_base, i), |
| 1874 | mask, reg); |
| 1875 | if (rc < 0) |
| 1876 | return rc; |
| 1877 | |
| 1878 | /* FULL SCALE CURRENT */ |
| 1879 | if (wled->fs_curr_ua > QPNP_WLED_FS_CURR_MAX_UA) |
| 1880 | wled->fs_curr_ua = QPNP_WLED_FS_CURR_MAX_UA; |
| 1881 | |
| 1882 | reg = wled->fs_curr_ua / QPNP_WLED_FS_CURR_STEP_UA; |
| 1883 | mask = QPNP_WLED_FS_CURR_MASK; |
| 1884 | rc = qpnp_wled_masked_write_reg(wled, |
| 1885 | QPNP_WLED_FS_CURR_REG(wled->sink_base, i), |
| 1886 | mask, reg); |
| 1887 | if (rc < 0) |
| 1888 | return rc; |
| 1889 | |
| 1890 | /* CABC */ |
| 1891 | reg = wled->en_cabc ? (1 << QPNP_WLED_CABC_SHIFT) : 0; |
| 1892 | mask = QPNP_WLED_CABC_MASK; |
| 1893 | rc = qpnp_wled_masked_write_reg(wled, |
| 1894 | QPNP_WLED_CABC_REG(wled->sink_base, i), |
| 1895 | mask, reg); |
| 1896 | if (rc < 0) |
| 1897 | return rc; |
| 1898 | } |
| 1899 | |
| 1900 | /* Settings specific to valid sinks */ |
David Collins | 8885f79 | 2017-01-26 14:36:34 -0800 | [diff] [blame] | 1901 | for (i = 0; i < wled->num_strings; i++) { |
Anirudh Ghayal | 101e4ef | 2017-05-26 16:51:53 +0530 | [diff] [blame^] | 1902 | if (wled->strings[i] >= wled->max_strings) { |
David Collins | 8885f79 | 2017-01-26 14:36:34 -0800 | [diff] [blame] | 1903 | dev_err(&wled->pdev->dev, "Invalid string number\n"); |
| 1904 | return -EINVAL; |
| 1905 | } |
David Collins | 8885f79 | 2017-01-26 14:36:34 -0800 | [diff] [blame] | 1906 | /* MODULATOR */ |
| 1907 | rc = qpnp_wled_read_reg(wled, |
Anirudh Ghayal | 101e4ef | 2017-05-26 16:51:53 +0530 | [diff] [blame^] | 1908 | QPNP_WLED_MOD_EN_REG(wled->sink_base, i), ®); |
David Collins | 8885f79 | 2017-01-26 14:36:34 -0800 | [diff] [blame] | 1909 | if (rc < 0) |
| 1910 | return rc; |
| 1911 | reg &= QPNP_WLED_MOD_EN_MASK; |
| 1912 | reg |= (QPNP_WLED_MOD_EN << QPNP_WLED_MOD_EN_SHFT); |
| 1913 | |
| 1914 | if (wled->dim_mode == QPNP_WLED_DIM_HYBRID) |
| 1915 | reg &= QPNP_WLED_GATE_DRV_MASK; |
| 1916 | else |
| 1917 | reg |= ~QPNP_WLED_GATE_DRV_MASK; |
| 1918 | |
| 1919 | rc = qpnp_wled_write_reg(wled, |
Anirudh Ghayal | 101e4ef | 2017-05-26 16:51:53 +0530 | [diff] [blame^] | 1920 | QPNP_WLED_MOD_EN_REG(wled->sink_base, i), reg); |
David Collins | 8885f79 | 2017-01-26 14:36:34 -0800 | [diff] [blame] | 1921 | if (rc) |
| 1922 | return rc; |
| 1923 | |
Anirudh Ghayal | 101e4ef | 2017-05-26 16:51:53 +0530 | [diff] [blame^] | 1924 | /* SINK EN */ |
David Collins | 8885f79 | 2017-01-26 14:36:34 -0800 | [diff] [blame] | 1925 | temp = wled->strings[i] + QPNP_WLED_CURR_SINK_SHIFT; |
Anirudh Ghayal | 101e4ef | 2017-05-26 16:51:53 +0530 | [diff] [blame^] | 1926 | sink_en |= (1 << temp); |
| 1927 | } |
| 1928 | mask = QPNP_WLED_CURR_SINK_MASK; |
| 1929 | rc = qpnp_wled_masked_write_reg(wled, |
| 1930 | QPNP_WLED_CURR_SINK_REG(wled->sink_base), |
| 1931 | mask, sink_en); |
| 1932 | if (rc < 0) { |
| 1933 | dev_err(&wled->pdev->dev, |
| 1934 | "Failed to enable WLED sink config rc = %d\n", rc); |
| 1935 | return rc; |
David Collins | 8885f79 | 2017-01-26 14:36:34 -0800 | [diff] [blame] | 1936 | } |
| 1937 | |
| 1938 | rc = qpnp_wled_sync_reg_toggle(wled); |
| 1939 | if (rc < 0) { |
| 1940 | dev_err(&wled->pdev->dev, "Failed to toggle sync reg %d\n", rc); |
| 1941 | return rc; |
| 1942 | } |
| 1943 | |
| 1944 | /* setup ovp and sc irqs */ |
| 1945 | if (wled->ovp_irq >= 0) { |
| 1946 | rc = devm_request_threaded_irq(&wled->pdev->dev, wled->ovp_irq, |
| 1947 | NULL, qpnp_wled_ovp_irq_handler, IRQF_ONESHOT, |
| 1948 | "qpnp_wled_ovp_irq", wled); |
| 1949 | if (rc < 0) { |
| 1950 | dev_err(&wled->pdev->dev, |
| 1951 | "Unable to request ovp(%d) IRQ(err:%d)\n", |
| 1952 | wled->ovp_irq, rc); |
| 1953 | return rc; |
| 1954 | } |
Anirudh Ghayal | 101e4ef | 2017-05-26 16:51:53 +0530 | [diff] [blame^] | 1955 | rc = qpnp_wled_read_reg(wled, |
| 1956 | QPNP_WLED_MODULE_EN_REG(wled->ctrl_base), ®); |
| 1957 | /* disable the OVP irq only if the module is not enabled */ |
| 1958 | if (!rc && !(reg & QPNP_WLED_MODULE_EN_MASK)) { |
| 1959 | disable_irq(wled->ovp_irq); |
| 1960 | wled->ovp_irq_disabled = true; |
| 1961 | } |
David Collins | 8885f79 | 2017-01-26 14:36:34 -0800 | [diff] [blame] | 1962 | } |
| 1963 | |
| 1964 | if (wled->sc_irq >= 0) { |
| 1965 | wled->sc_cnt = 0; |
| 1966 | rc = devm_request_threaded_irq(&wled->pdev->dev, wled->sc_irq, |
| 1967 | NULL, qpnp_wled_sc_irq_handler, IRQF_ONESHOT, |
| 1968 | "qpnp_wled_sc_irq", wled); |
| 1969 | if (rc < 0) { |
| 1970 | dev_err(&wled->pdev->dev, |
| 1971 | "Unable to request sc(%d) IRQ(err:%d)\n", |
| 1972 | wled->sc_irq, rc); |
| 1973 | return rc; |
| 1974 | } |
| 1975 | |
| 1976 | rc = qpnp_wled_read_reg(wled, |
| 1977 | QPNP_WLED_SC_PRO_REG(wled->ctrl_base), ®); |
| 1978 | if (rc < 0) |
| 1979 | return rc; |
| 1980 | reg &= QPNP_WLED_EN_SC_DEB_CYCLES_MASK; |
| 1981 | reg |= 1 << QPNP_WLED_EN_SC_SHIFT; |
| 1982 | |
| 1983 | if (wled->sc_deb_cycles < QPNP_WLED_SC_DEB_CYCLES_MIN) |
| 1984 | wled->sc_deb_cycles = QPNP_WLED_SC_DEB_CYCLES_MIN; |
| 1985 | else if (wled->sc_deb_cycles > QPNP_WLED_SC_DEB_CYCLES_MAX) |
| 1986 | wled->sc_deb_cycles = QPNP_WLED_SC_DEB_CYCLES_MAX; |
| 1987 | temp = fls(wled->sc_deb_cycles) - QPNP_WLED_SC_DEB_CYCLES_SUB; |
| 1988 | reg |= (temp << 1); |
| 1989 | |
| 1990 | if (wled->disp_type_amoled) |
| 1991 | reg |= QPNP_WLED_SC_PRO_EN_DSCHGR; |
| 1992 | |
| 1993 | rc = qpnp_wled_write_reg(wled, |
| 1994 | QPNP_WLED_SC_PRO_REG(wled->ctrl_base), reg); |
| 1995 | if (rc) |
| 1996 | return rc; |
| 1997 | |
| 1998 | if (wled->en_ext_pfet_sc_pro) { |
| 1999 | reg = QPNP_WLED_EXT_FET_DTEST2; |
| 2000 | rc = qpnp_wled_sec_write_reg(wled, |
| 2001 | QPNP_WLED_TEST1_REG(wled->ctrl_base), |
| 2002 | reg); |
| 2003 | if (rc) |
| 2004 | return rc; |
| 2005 | } |
| 2006 | } else { |
| 2007 | rc = qpnp_wled_read_reg(wled, |
| 2008 | QPNP_WLED_SC_PRO_REG(wled->ctrl_base), ®); |
| 2009 | if (rc < 0) |
| 2010 | return rc; |
| 2011 | reg &= QPNP_WLED_EN_DEB_CYCLES_MASK; |
| 2012 | |
| 2013 | if (wled->sc_deb_cycles < QPNP_WLED_SC_DEB_CYCLES_MIN) |
| 2014 | wled->sc_deb_cycles = QPNP_WLED_SC_DEB_CYCLES_MIN; |
| 2015 | else if (wled->sc_deb_cycles > QPNP_WLED_SC_DEB_CYCLES_MAX) |
| 2016 | wled->sc_deb_cycles = QPNP_WLED_SC_DEB_CYCLES_MAX; |
| 2017 | temp = fls(wled->sc_deb_cycles) - QPNP_WLED_SC_DEB_CYCLES_SUB; |
| 2018 | reg |= (temp << 1); |
| 2019 | |
| 2020 | rc = qpnp_wled_write_reg(wled, |
| 2021 | QPNP_WLED_SC_PRO_REG(wled->ctrl_base), reg); |
| 2022 | if (rc) |
| 2023 | return rc; |
| 2024 | } |
| 2025 | |
| 2026 | return 0; |
| 2027 | } |
| 2028 | |
| 2029 | /* parse wled dtsi parameters */ |
| 2030 | static int qpnp_wled_parse_dt(struct qpnp_wled *wled) |
| 2031 | { |
| 2032 | struct platform_device *pdev = wled->pdev; |
| 2033 | struct property *prop; |
| 2034 | const char *temp_str; |
| 2035 | u32 temp_val; |
| 2036 | int rc, i; |
| 2037 | u8 *strings; |
| 2038 | |
| 2039 | wled->cdev.name = "wled"; |
| 2040 | rc = of_property_read_string(pdev->dev.of_node, |
| 2041 | "linux,name", &wled->cdev.name); |
| 2042 | if (rc && (rc != -EINVAL)) { |
| 2043 | dev_err(&pdev->dev, "Unable to read led name\n"); |
| 2044 | return rc; |
| 2045 | } |
| 2046 | |
| 2047 | wled->cdev.default_trigger = QPNP_WLED_TRIGGER_NONE; |
| 2048 | rc = of_property_read_string(pdev->dev.of_node, "linux,default-trigger", |
| 2049 | &wled->cdev.default_trigger); |
| 2050 | if (rc && (rc != -EINVAL)) { |
| 2051 | dev_err(&pdev->dev, "Unable to read led trigger\n"); |
| 2052 | return rc; |
| 2053 | } |
| 2054 | |
| 2055 | wled->disp_type_amoled = of_property_read_bool(pdev->dev.of_node, |
| 2056 | "qcom,disp-type-amoled"); |
| 2057 | if (wled->disp_type_amoled) { |
| 2058 | wled->vref_psm_mv = QPNP_WLED_VREF_PSM_DFLT_AMOLED_MV; |
| 2059 | rc = of_property_read_u32(pdev->dev.of_node, |
| 2060 | "qcom,vref-psm-mv", &temp_val); |
| 2061 | if (!rc) { |
| 2062 | wled->vref_psm_mv = temp_val; |
| 2063 | } else if (rc != -EINVAL) { |
| 2064 | dev_err(&pdev->dev, "Unable to read vref-psm\n"); |
| 2065 | return rc; |
| 2066 | } |
| 2067 | |
| 2068 | wled->loop_comp_res_kohm = |
| 2069 | QPNP_WLED_LOOP_COMP_RES_DFLT_AMOLED_KOHM; |
| 2070 | rc = of_property_read_u32(pdev->dev.of_node, |
| 2071 | "qcom,loop-comp-res-kohm", &temp_val); |
| 2072 | if (!rc) { |
| 2073 | wled->loop_comp_res_kohm = temp_val; |
| 2074 | } else if (rc != -EINVAL) { |
| 2075 | dev_err(&pdev->dev, "Unable to read loop-comp-res-kohm\n"); |
| 2076 | return rc; |
| 2077 | } |
| 2078 | |
| 2079 | wled->avdd_mode_spmi = of_property_read_bool(pdev->dev.of_node, |
| 2080 | "qcom,avdd-mode-spmi"); |
| 2081 | |
| 2082 | wled->avdd_target_voltage_mv = QPNP_WLED_DFLT_AVDD_MV; |
| 2083 | rc = of_property_read_u32(pdev->dev.of_node, |
| 2084 | "qcom,avdd-target-voltage-mv", &temp_val); |
| 2085 | if (!rc) { |
| 2086 | wled->avdd_target_voltage_mv = temp_val; |
| 2087 | } else if (rc != -EINVAL) { |
| 2088 | dev_err(&pdev->dev, "Unable to read avdd target voltage\n"); |
| 2089 | return rc; |
| 2090 | } |
| 2091 | } |
| 2092 | |
| 2093 | if (wled->disp_type_amoled) { |
| 2094 | if (wled->pmic_rev_id->pmic_subtype == PMI8998_SUBTYPE || |
| 2095 | wled->pmic_rev_id->pmic_subtype == PM660L_SUBTYPE) |
| 2096 | wled->loop_ea_gm = |
| 2097 | QPNP_WLED_LOOP_GM_DFLT_AMOLED_PMI8998; |
| 2098 | else |
| 2099 | wled->loop_ea_gm = |
| 2100 | QPNP_WLED_LOOP_EA_GM_DFLT_AMOLED_PMI8994; |
| 2101 | } else { |
| 2102 | wled->loop_ea_gm = QPNP_WLED_LOOP_GM_DFLT_WLED; |
| 2103 | } |
| 2104 | |
| 2105 | rc = of_property_read_u32(pdev->dev.of_node, |
| 2106 | "qcom,loop-ea-gm", &temp_val); |
| 2107 | if (!rc) { |
| 2108 | wled->loop_ea_gm = temp_val; |
| 2109 | } else if (rc != -EINVAL) { |
| 2110 | dev_err(&pdev->dev, "Unable to read loop-ea-gm\n"); |
| 2111 | return rc; |
| 2112 | } |
| 2113 | |
| 2114 | if (wled->pmic_rev_id->pmic_subtype == PMI8998_SUBTYPE || |
| 2115 | wled->pmic_rev_id->pmic_subtype == PM660L_SUBTYPE) { |
| 2116 | wled->loop_auto_gm_en = |
| 2117 | of_property_read_bool(pdev->dev.of_node, |
| 2118 | "qcom,loop-auto-gm-en"); |
| 2119 | wled->loop_auto_gm_thresh = QPNP_WLED_LOOP_AUTO_GM_DFLT_THRESH; |
| 2120 | rc = of_property_read_u8(pdev->dev.of_node, |
| 2121 | "qcom,loop-auto-gm-thresh", |
| 2122 | &wled->loop_auto_gm_thresh); |
| 2123 | if (rc && rc != -EINVAL) { |
| 2124 | dev_err(&pdev->dev, |
| 2125 | "Unable to read loop-auto-gm-thresh\n"); |
| 2126 | return rc; |
| 2127 | } |
| 2128 | } |
| 2129 | |
| 2130 | if (wled->pmic_rev_id->pmic_subtype == PMI8998_SUBTYPE || |
| 2131 | wled->pmic_rev_id->pmic_subtype == PM660L_SUBTYPE) { |
| 2132 | |
| 2133 | if (wled->pmic_rev_id->rev4 == PMI8998_V2P0_REV4) |
| 2134 | wled->lcd_auto_pfm_en = false; |
| 2135 | else |
| 2136 | wled->lcd_auto_pfm_en = true; |
| 2137 | |
| 2138 | wled->lcd_auto_pfm_thresh = QPNP_WLED_LCD_AUTO_PFM_DFLT_THRESH; |
| 2139 | rc = of_property_read_u8(pdev->dev.of_node, |
| 2140 | "qcom,lcd-auto-pfm-thresh", |
| 2141 | &wled->lcd_auto_pfm_thresh); |
| 2142 | if (rc && rc != -EINVAL) { |
| 2143 | dev_err(&pdev->dev, |
| 2144 | "Unable to read lcd-auto-pfm-thresh\n"); |
| 2145 | return rc; |
| 2146 | } |
| 2147 | |
| 2148 | if (wled->lcd_auto_pfm_thresh > |
| 2149 | QPNP_WLED_LCD_AUTO_PFM_THRESH_MAX) |
| 2150 | wled->lcd_auto_pfm_thresh = |
| 2151 | QPNP_WLED_LCD_AUTO_PFM_THRESH_MAX; |
| 2152 | } |
| 2153 | |
| 2154 | wled->sc_deb_cycles = QPNP_WLED_SC_DEB_CYCLES_DFLT; |
| 2155 | rc = of_property_read_u32(pdev->dev.of_node, |
| 2156 | "qcom,sc-deb-cycles", &temp_val); |
| 2157 | if (!rc) { |
| 2158 | wled->sc_deb_cycles = temp_val; |
| 2159 | } else if (rc != -EINVAL) { |
| 2160 | dev_err(&pdev->dev, "Unable to read sc debounce cycles\n"); |
| 2161 | return rc; |
| 2162 | } |
| 2163 | |
| 2164 | wled->fdbk_op = QPNP_WLED_FDBK_AUTO; |
| 2165 | rc = of_property_read_string(pdev->dev.of_node, |
| 2166 | "qcom,fdbk-output", &temp_str); |
| 2167 | if (!rc) { |
| 2168 | if (strcmp(temp_str, "wled1") == 0) |
| 2169 | wled->fdbk_op = QPNP_WLED_FDBK_WLED1; |
| 2170 | else if (strcmp(temp_str, "wled2") == 0) |
| 2171 | wled->fdbk_op = QPNP_WLED_FDBK_WLED2; |
| 2172 | else if (strcmp(temp_str, "wled3") == 0) |
| 2173 | wled->fdbk_op = QPNP_WLED_FDBK_WLED3; |
| 2174 | else if (strcmp(temp_str, "wled4") == 0) |
| 2175 | wled->fdbk_op = QPNP_WLED_FDBK_WLED4; |
| 2176 | else |
| 2177 | wled->fdbk_op = QPNP_WLED_FDBK_AUTO; |
| 2178 | } else if (rc != -EINVAL) { |
| 2179 | dev_err(&pdev->dev, "Unable to read feedback output\n"); |
| 2180 | return rc; |
| 2181 | } |
| 2182 | |
| 2183 | if (wled->pmic_rev_id->pmic_subtype == PMI8998_SUBTYPE || |
| 2184 | wled->pmic_rev_id->pmic_subtype == PM660L_SUBTYPE) |
| 2185 | wled->vref_uv = vref_setting_pmi8998.default_uv; |
| 2186 | else |
| 2187 | wled->vref_uv = vref_setting_pmi8994.default_uv; |
| 2188 | rc = of_property_read_u32(pdev->dev.of_node, |
| 2189 | "qcom,vref-uv", &temp_val); |
| 2190 | if (!rc) { |
| 2191 | wled->vref_uv = temp_val; |
| 2192 | } else if (rc != -EINVAL) { |
| 2193 | dev_err(&pdev->dev, "Unable to read vref\n"); |
| 2194 | return rc; |
| 2195 | } |
| 2196 | |
| 2197 | wled->switch_freq_khz = QPNP_WLED_SWITCH_FREQ_800_KHZ; |
| 2198 | rc = of_property_read_u32(pdev->dev.of_node, |
| 2199 | "qcom,switch-freq-khz", &temp_val); |
| 2200 | if (!rc) { |
| 2201 | wled->switch_freq_khz = temp_val; |
| 2202 | } else if (rc != -EINVAL) { |
| 2203 | dev_err(&pdev->dev, "Unable to read switch freq\n"); |
| 2204 | return rc; |
| 2205 | } |
| 2206 | |
| 2207 | if (wled->pmic_rev_id->pmic_subtype == PMI8998_SUBTYPE || |
| 2208 | wled->pmic_rev_id->pmic_subtype == PM660L_SUBTYPE) |
| 2209 | wled->ovp_mv = 29600; |
| 2210 | else |
| 2211 | wled->ovp_mv = 29500; |
| 2212 | rc = of_property_read_u32(pdev->dev.of_node, |
| 2213 | "qcom,ovp-mv", &temp_val); |
| 2214 | if (!rc) { |
| 2215 | wled->ovp_mv = temp_val; |
| 2216 | } else if (rc != -EINVAL) { |
| 2217 | dev_err(&pdev->dev, "Unable to read ovp\n"); |
| 2218 | return rc; |
| 2219 | } |
| 2220 | |
| 2221 | if (wled->pmic_rev_id->pmic_subtype == PMI8998_SUBTYPE || |
| 2222 | wled->pmic_rev_id->pmic_subtype == PM660L_SUBTYPE) { |
| 2223 | if (wled->disp_type_amoled) |
| 2224 | wled->ilim_ma = PMI8998_AMOLED_DFLT_ILIM_MA; |
| 2225 | else |
| 2226 | wled->ilim_ma = PMI8998_WLED_DFLT_ILIM_MA; |
| 2227 | } else { |
| 2228 | if (wled->disp_type_amoled) |
| 2229 | wled->ilim_ma = PMI8994_AMOLED_DFLT_ILIM_MA; |
| 2230 | else |
| 2231 | wled->ilim_ma = PMI8994_WLED_DFLT_ILIM_MA; |
| 2232 | } |
| 2233 | |
| 2234 | rc = of_property_read_u32(pdev->dev.of_node, |
| 2235 | "qcom,ilim-ma", &temp_val); |
| 2236 | if (!rc) { |
| 2237 | wled->ilim_ma = temp_val; |
| 2238 | } else if (rc != -EINVAL) { |
| 2239 | dev_err(&pdev->dev, "Unable to read ilim\n"); |
| 2240 | return rc; |
| 2241 | } |
| 2242 | |
| 2243 | wled->boost_duty_ns = QPNP_WLED_DEF_BOOST_DUTY_NS; |
| 2244 | rc = of_property_read_u32(pdev->dev.of_node, |
| 2245 | "qcom,boost-duty-ns", &temp_val); |
| 2246 | if (!rc) { |
| 2247 | wled->boost_duty_ns = temp_val; |
| 2248 | } else if (rc != -EINVAL) { |
| 2249 | dev_err(&pdev->dev, "Unable to read boost duty\n"); |
| 2250 | return rc; |
| 2251 | } |
| 2252 | |
| 2253 | wled->mod_freq_khz = QPNP_WLED_MOD_FREQ_9600_KHZ; |
| 2254 | rc = of_property_read_u32(pdev->dev.of_node, |
| 2255 | "qcom,mod-freq-khz", &temp_val); |
| 2256 | if (!rc) { |
| 2257 | wled->mod_freq_khz = temp_val; |
| 2258 | } else if (rc != -EINVAL) { |
| 2259 | dev_err(&pdev->dev, "Unable to read modulation freq\n"); |
| 2260 | return rc; |
| 2261 | } |
| 2262 | |
| 2263 | wled->dim_mode = QPNP_WLED_DIM_HYBRID; |
| 2264 | rc = of_property_read_string(pdev->dev.of_node, |
| 2265 | "qcom,dim-mode", &temp_str); |
| 2266 | if (!rc) { |
| 2267 | if (strcmp(temp_str, "analog") == 0) |
| 2268 | wled->dim_mode = QPNP_WLED_DIM_ANALOG; |
| 2269 | else if (strcmp(temp_str, "digital") == 0) |
| 2270 | wled->dim_mode = QPNP_WLED_DIM_DIGITAL; |
| 2271 | else |
| 2272 | wled->dim_mode = QPNP_WLED_DIM_HYBRID; |
| 2273 | } else if (rc != -EINVAL) { |
| 2274 | dev_err(&pdev->dev, "Unable to read dim mode\n"); |
| 2275 | return rc; |
| 2276 | } |
| 2277 | |
| 2278 | if (wled->dim_mode == QPNP_WLED_DIM_HYBRID) { |
| 2279 | wled->hyb_thres = QPNP_WLED_DEF_HYB_THRES; |
| 2280 | rc = of_property_read_u32(pdev->dev.of_node, |
| 2281 | "qcom,hyb-thres", &temp_val); |
| 2282 | if (!rc) { |
| 2283 | wled->hyb_thres = temp_val; |
| 2284 | } else if (rc != -EINVAL) { |
| 2285 | dev_err(&pdev->dev, "Unable to read hyb threshold\n"); |
| 2286 | return rc; |
| 2287 | } |
| 2288 | } |
| 2289 | |
| 2290 | wled->sync_dly_us = QPNP_WLED_DEF_SYNC_DLY_US; |
| 2291 | rc = of_property_read_u32(pdev->dev.of_node, |
| 2292 | "qcom,sync-dly-us", &temp_val); |
| 2293 | if (!rc) { |
| 2294 | wled->sync_dly_us = temp_val; |
| 2295 | } else if (rc != -EINVAL) { |
| 2296 | dev_err(&pdev->dev, "Unable to read sync delay\n"); |
| 2297 | return rc; |
| 2298 | } |
| 2299 | |
| 2300 | wled->fs_curr_ua = QPNP_WLED_FS_CURR_MAX_UA; |
| 2301 | rc = of_property_read_u32(pdev->dev.of_node, |
| 2302 | "qcom,fs-curr-ua", &temp_val); |
| 2303 | if (!rc) { |
| 2304 | wled->fs_curr_ua = temp_val; |
| 2305 | } else if (rc != -EINVAL) { |
| 2306 | dev_err(&pdev->dev, "Unable to read full scale current\n"); |
| 2307 | return rc; |
| 2308 | } |
| 2309 | |
| 2310 | wled->cons_sync_write_delay_us = 0; |
| 2311 | rc = of_property_read_u32(pdev->dev.of_node, |
| 2312 | "qcom,cons-sync-write-delay-us", &temp_val); |
| 2313 | if (!rc) |
| 2314 | wled->cons_sync_write_delay_us = temp_val; |
| 2315 | |
| 2316 | wled->en_9b_dim_res = of_property_read_bool(pdev->dev.of_node, |
| 2317 | "qcom,en-9b-dim-res"); |
| 2318 | wled->en_phase_stag = of_property_read_bool(pdev->dev.of_node, |
| 2319 | "qcom,en-phase-stag"); |
| 2320 | wled->en_cabc = of_property_read_bool(pdev->dev.of_node, |
| 2321 | "qcom,en-cabc"); |
| 2322 | |
Anirudh Ghayal | 101e4ef | 2017-05-26 16:51:53 +0530 | [diff] [blame^] | 2323 | if (wled->pmic_rev_id->pmic_subtype == PM660L_SUBTYPE) |
| 2324 | wled->max_strings = QPNP_PM660_WLED_MAX_STRINGS; |
| 2325 | else |
| 2326 | wled->max_strings = QPNP_WLED_MAX_STRINGS; |
| 2327 | |
David Collins | 8885f79 | 2017-01-26 14:36:34 -0800 | [diff] [blame] | 2328 | prop = of_find_property(pdev->dev.of_node, |
| 2329 | "qcom,led-strings-list", &temp_val); |
| 2330 | if (!prop || !temp_val || temp_val > QPNP_WLED_MAX_STRINGS) { |
| 2331 | dev_err(&pdev->dev, "Invalid strings info, use default"); |
Anirudh Ghayal | 101e4ef | 2017-05-26 16:51:53 +0530 | [diff] [blame^] | 2332 | wled->num_strings = wled->max_strings; |
David Collins | 8885f79 | 2017-01-26 14:36:34 -0800 | [diff] [blame] | 2333 | for (i = 0; i < wled->num_strings; i++) |
| 2334 | wled->strings[i] = i; |
| 2335 | } else { |
| 2336 | wled->num_strings = temp_val; |
| 2337 | strings = prop->value; |
| 2338 | for (i = 0; i < wled->num_strings; ++i) |
| 2339 | wled->strings[i] = strings[i]; |
| 2340 | } |
| 2341 | |
| 2342 | wled->ovp_irq = platform_get_irq_byname(pdev, "ovp-irq"); |
| 2343 | if (wled->ovp_irq < 0) |
| 2344 | dev_dbg(&pdev->dev, "ovp irq is not used\n"); |
| 2345 | |
| 2346 | wled->sc_irq = platform_get_irq_byname(pdev, "sc-irq"); |
| 2347 | if (wled->sc_irq < 0) |
| 2348 | dev_dbg(&pdev->dev, "sc irq is not used\n"); |
| 2349 | |
| 2350 | wled->en_ext_pfet_sc_pro = of_property_read_bool(pdev->dev.of_node, |
| 2351 | "qcom,en-ext-pfet-sc-pro"); |
| 2352 | |
Subbaraman Narayanamurthy | 5569884 | 2017-02-17 15:48:47 -0800 | [diff] [blame] | 2353 | wled->lcd_psm_ctrl = of_property_read_bool(pdev->dev.of_node, |
| 2354 | "qcom,lcd-psm-ctrl"); |
Anirudh Ghayal | 101e4ef | 2017-05-26 16:51:53 +0530 | [diff] [blame^] | 2355 | |
| 2356 | wled->auto_calib_enabled = of_property_read_bool(pdev->dev.of_node, |
| 2357 | "qcom,auto-calibration-enable"); |
David Collins | 8885f79 | 2017-01-26 14:36:34 -0800 | [diff] [blame] | 2358 | return 0; |
| 2359 | } |
| 2360 | |
| 2361 | static int qpnp_wled_probe(struct platform_device *pdev) |
| 2362 | { |
| 2363 | struct qpnp_wled *wled; |
| 2364 | struct device_node *revid_node; |
| 2365 | int rc = 0, i; |
| 2366 | const __be32 *prop; |
| 2367 | |
| 2368 | wled = devm_kzalloc(&pdev->dev, sizeof(*wled), GFP_KERNEL); |
| 2369 | if (!wled) |
| 2370 | return -ENOMEM; |
Stephen Boyd | d71c7f6 | 2017-03-20 15:49:04 -0700 | [diff] [blame] | 2371 | |
| 2372 | wled->regmap = dev_get_regmap(pdev->dev.parent, NULL); |
| 2373 | if (!wled->regmap) { |
| 2374 | dev_err(&pdev->dev, "Couldn't get parent's regmap\n"); |
| 2375 | return -EINVAL; |
| 2376 | } |
David Collins | 8885f79 | 2017-01-26 14:36:34 -0800 | [diff] [blame] | 2377 | |
| 2378 | wled->pdev = pdev; |
| 2379 | |
| 2380 | revid_node = of_parse_phandle(pdev->dev.of_node, "qcom,pmic-revid", 0); |
| 2381 | if (!revid_node) { |
| 2382 | pr_err("Missing qcom,pmic-revid property - driver failed\n"); |
| 2383 | return -EINVAL; |
| 2384 | } |
| 2385 | |
| 2386 | wled->pmic_rev_id = get_revid_data(revid_node); |
| 2387 | if (IS_ERR_OR_NULL(wled->pmic_rev_id)) { |
| 2388 | pr_err("Unable to get pmic_revid rc=%ld\n", |
| 2389 | PTR_ERR(wled->pmic_rev_id)); |
| 2390 | /* |
| 2391 | * the revid peripheral must be registered, any failure |
| 2392 | * here only indicates that the rev-id module has not |
| 2393 | * probed yet. |
| 2394 | */ |
| 2395 | return -EPROBE_DEFER; |
| 2396 | } |
| 2397 | |
| 2398 | pr_debug("PMIC subtype %d Digital major %d\n", |
| 2399 | wled->pmic_rev_id->pmic_subtype, wled->pmic_rev_id->rev4); |
| 2400 | |
| 2401 | prop = of_get_address_by_name(pdev->dev.of_node, QPNP_WLED_SINK_BASE, |
| 2402 | 0, 0); |
| 2403 | if (!prop) { |
| 2404 | dev_err(&pdev->dev, "Couldnt find sink's addr rc %d\n", rc); |
| 2405 | return rc; |
| 2406 | } |
| 2407 | wled->sink_base = be32_to_cpu(*prop); |
| 2408 | |
| 2409 | prop = of_get_address_by_name(pdev->dev.of_node, QPNP_WLED_CTRL_BASE, |
| 2410 | 0, 0); |
| 2411 | if (!prop) { |
| 2412 | dev_err(&pdev->dev, "Couldnt find ctrl's addr rc = %d\n", rc); |
| 2413 | return rc; |
| 2414 | } |
| 2415 | wled->ctrl_base = be32_to_cpu(*prop); |
| 2416 | |
| 2417 | dev_set_drvdata(&pdev->dev, wled); |
| 2418 | |
| 2419 | rc = qpnp_wled_parse_dt(wled); |
| 2420 | if (rc) { |
| 2421 | dev_err(&pdev->dev, "DT parsing failed\n"); |
| 2422 | return rc; |
| 2423 | } |
| 2424 | |
| 2425 | mutex_init(&wled->bus_lock); |
Anirudh Ghayal | 101e4ef | 2017-05-26 16:51:53 +0530 | [diff] [blame^] | 2426 | mutex_init(&wled->lock); |
David Collins | 8885f79 | 2017-01-26 14:36:34 -0800 | [diff] [blame] | 2427 | rc = qpnp_wled_config(wled); |
| 2428 | if (rc) { |
| 2429 | dev_err(&pdev->dev, "wled config failed\n"); |
| 2430 | return rc; |
| 2431 | } |
| 2432 | |
David Collins | 8885f79 | 2017-01-26 14:36:34 -0800 | [diff] [blame] | 2433 | INIT_WORK(&wled->work, qpnp_wled_work); |
| 2434 | wled->ramp_ms = QPNP_WLED_RAMP_DLY_MS; |
| 2435 | wled->ramp_step = 1; |
| 2436 | |
| 2437 | wled->cdev.brightness_set = qpnp_wled_set; |
| 2438 | wled->cdev.brightness_get = qpnp_wled_get; |
| 2439 | |
| 2440 | wled->cdev.max_brightness = WLED_MAX_LEVEL_4095; |
| 2441 | |
| 2442 | rc = led_classdev_register(&pdev->dev, &wled->cdev); |
| 2443 | if (rc) { |
| 2444 | dev_err(&pdev->dev, "wled registration failed(%d)\n", rc); |
| 2445 | goto wled_register_fail; |
| 2446 | } |
| 2447 | |
| 2448 | for (i = 0; i < ARRAY_SIZE(qpnp_wled_attrs); i++) { |
| 2449 | rc = sysfs_create_file(&wled->cdev.dev->kobj, |
| 2450 | &qpnp_wled_attrs[i].attr); |
| 2451 | if (rc < 0) { |
| 2452 | dev_err(&pdev->dev, "sysfs creation failed\n"); |
| 2453 | goto sysfs_fail; |
| 2454 | } |
| 2455 | } |
| 2456 | |
| 2457 | return 0; |
| 2458 | |
| 2459 | sysfs_fail: |
| 2460 | for (i--; i >= 0; i--) |
| 2461 | sysfs_remove_file(&wled->cdev.dev->kobj, |
| 2462 | &qpnp_wled_attrs[i].attr); |
| 2463 | led_classdev_unregister(&wled->cdev); |
| 2464 | wled_register_fail: |
| 2465 | cancel_work_sync(&wled->work); |
| 2466 | mutex_destroy(&wled->lock); |
| 2467 | return rc; |
| 2468 | } |
| 2469 | |
| 2470 | static int qpnp_wled_remove(struct platform_device *pdev) |
| 2471 | { |
| 2472 | struct qpnp_wled *wled = dev_get_drvdata(&pdev->dev); |
| 2473 | int i; |
| 2474 | |
| 2475 | for (i = 0; i < ARRAY_SIZE(qpnp_wled_attrs); i++) |
| 2476 | sysfs_remove_file(&wled->cdev.dev->kobj, |
| 2477 | &qpnp_wled_attrs[i].attr); |
| 2478 | |
| 2479 | led_classdev_unregister(&wled->cdev); |
| 2480 | cancel_work_sync(&wled->work); |
| 2481 | mutex_destroy(&wled->lock); |
| 2482 | |
| 2483 | return 0; |
| 2484 | } |
| 2485 | |
| 2486 | static const struct of_device_id spmi_match_table[] = { |
| 2487 | { .compatible = "qcom,qpnp-wled",}, |
| 2488 | { }, |
| 2489 | }; |
| 2490 | |
| 2491 | static struct platform_driver qpnp_wled_driver = { |
| 2492 | .driver = { |
| 2493 | .name = "qcom,qpnp-wled", |
| 2494 | .of_match_table = spmi_match_table, |
| 2495 | }, |
| 2496 | .probe = qpnp_wled_probe, |
| 2497 | .remove = qpnp_wled_remove, |
| 2498 | }; |
| 2499 | |
| 2500 | static int __init qpnp_wled_init(void) |
| 2501 | { |
| 2502 | return platform_driver_register(&qpnp_wled_driver); |
| 2503 | } |
Subbaraman Narayanamurthy | 67e30fb | 2017-05-01 16:29:34 -0700 | [diff] [blame] | 2504 | subsys_initcall(qpnp_wled_init); |
David Collins | 8885f79 | 2017-01-26 14:36:34 -0800 | [diff] [blame] | 2505 | |
| 2506 | static void __exit qpnp_wled_exit(void) |
| 2507 | { |
| 2508 | platform_driver_unregister(&qpnp_wled_driver); |
| 2509 | } |
| 2510 | module_exit(qpnp_wled_exit); |
| 2511 | |
| 2512 | MODULE_DESCRIPTION("QPNP WLED driver"); |
| 2513 | MODULE_LICENSE("GPL v2"); |
| 2514 | MODULE_ALIAS("leds:leds-qpnp-wled"); |