Vishnuvardhan Prodduturi | af59b91 | 2015-10-20 21:14:27 +0530 | [diff] [blame] | 1 | /* Copyright (c) 2014-2016, The Linux Foundation. All rights reserved. |
Aparna Mallavarapu | 083766b | 2014-07-21 21:04:48 +0530 | [diff] [blame] | 2 | |
| 3 | * Redistribution and use in source and binary forms, with or without |
| 4 | * modification, are permitted provided that the following conditions are |
| 5 | * met: |
| 6 | * * Redistributions of source code must retain the above copyright |
| 7 | * notice, this list of conditions and the following disclaimer. |
| 8 | * * Redistributions in binary form must reproduce the above |
| 9 | * copyright notice, this list of conditions and the following |
| 10 | * disclaimer in the documentation and/or other materials provided |
| 11 | * with the distribution. |
| 12 | * * Neither the name of The Linux Foundation, Inc. nor the names of its |
| 13 | * contributors may be used to endorse or promote products derived |
| 14 | * from this software without specific prior written permission. |
| 15 | * |
| 16 | * THIS SOFTWARE IS PROVIDED "AS IS" AND ANY EXPRESS OR IMPLIED |
| 17 | * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF |
| 18 | * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT |
| 19 | * ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS |
| 20 | * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR |
| 21 | * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF |
| 22 | * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR |
| 23 | * BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, |
| 24 | * WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE |
| 25 | * OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN |
| 26 | * IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. |
| 27 | */ |
| 28 | |
| 29 | #include <stdio.h> |
Veera Sundaram Sankaran | 4e23fab | 2014-12-09 13:54:32 -0800 | [diff] [blame] | 30 | #include <string.h> |
| 31 | #include <stdlib.h> |
Aparna Mallavarapu | 083766b | 2014-07-21 21:04:48 +0530 | [diff] [blame] | 32 | #include <err.h> |
| 33 | #include <qpnp_wled.h> |
Veera Sundaram Sankaran | 4e23fab | 2014-12-09 13:54:32 -0800 | [diff] [blame] | 34 | #include <pm8x41_wled.h> |
| 35 | #include <qtimer.h> |
Aparna Mallavarapu | 083766b | 2014-07-21 21:04:48 +0530 | [diff] [blame] | 36 | |
Parth Dixit | e46b1a2 | 2016-06-06 19:16:20 +0530 | [diff] [blame] | 37 | static int qpnp_wled_avdd_target_voltages[NUM_SUPPORTED_AVDD_VOLTAGES] = { |
| 38 | 7900, 7600, 7300, 6400, 6100, 5800, |
| 39 | }; |
| 40 | |
| 41 | static uint8_t qpnp_wled_ovp_reg_settings[NUM_SUPPORTED_AVDD_VOLTAGES] = { |
| 42 | 0x0, 0x0, 0x1, 0x2, 0x2, 0x3, |
| 43 | }; |
| 44 | |
| 45 | static int qpnp_wled_avdd_trim_adjustments[NUM_SUPPORTED_AVDD_VOLTAGES] = { |
| 46 | 3, 0, -2, 7, 3, 3, |
| 47 | }; |
| 48 | |
Aparna Mallavarapu | 083766b | 2014-07-21 21:04:48 +0530 | [diff] [blame] | 49 | static int fls(uint16_t n) |
| 50 | { |
| 51 | int i = 0; |
| 52 | for (; n; n >>= 1, i++); |
| 53 | return i; |
| 54 | } |
| 55 | |
| 56 | static struct qpnp_wled *gwled; |
Aparna Mallavarapu | a42de90 | 2014-12-08 17:25:44 -0800 | [diff] [blame] | 57 | static int qpnp_labibb_regulator_set_voltage(struct qpnp_wled *wled); |
Aparna Mallavarapu | 083766b | 2014-07-21 21:04:48 +0530 | [diff] [blame] | 58 | |
| 59 | static int qpnp_wled_sec_access(struct qpnp_wled *wled, uint16_t base_addr) |
| 60 | { |
Aparna Mallavarapu | 083766b | 2014-07-21 21:04:48 +0530 | [diff] [blame] | 61 | uint8_t reg = QPNP_WLED_SEC_UNLOCK; |
| 62 | |
| 63 | pm8x41_wled_reg_write(QPNP_WLED_SEC_ACCESS_REG(base_addr), reg); |
| 64 | |
| 65 | return 0; |
| 66 | } |
| 67 | |
| 68 | /* set wled to a level of brightness */ |
| 69 | static int qpnp_wled_set_level(struct qpnp_wled *wled, int level) |
| 70 | { |
Veera Sundaram Sankaran | 4e23fab | 2014-12-09 13:54:32 -0800 | [diff] [blame] | 71 | int i; |
Aparna Mallavarapu | 083766b | 2014-07-21 21:04:48 +0530 | [diff] [blame] | 72 | uint8_t reg; |
| 73 | |
| 74 | /* set brightness registers */ |
| 75 | for (i = 0; i < wled->num_strings; i++) { |
| 76 | reg = level & QPNP_WLED_BRIGHT_LSB_MASK; |
| 77 | pm8x41_wled_reg_write(QPNP_WLED_BRIGHT_LSB_REG(wled->sink_base, |
| 78 | wled->strings[i]), reg); |
| 79 | |
| 80 | reg = level >> QPNP_WLED_BRIGHT_MSB_SHIFT; |
| 81 | reg = reg & QPNP_WLED_BRIGHT_MSB_MASK; |
| 82 | pm8x41_wled_reg_write(QPNP_WLED_BRIGHT_MSB_REG(wled->sink_base, |
| 83 | wled->strings[i]), reg); |
| 84 | } |
| 85 | |
| 86 | /* sync */ |
| 87 | reg = QPNP_WLED_SYNC; |
| 88 | pm8x41_wled_reg_write(QPNP_WLED_SYNC_REG(wled->sink_base), reg); |
| 89 | |
| 90 | reg = QPNP_WLED_SYNC_RESET; |
| 91 | pm8x41_wled_reg_write(QPNP_WLED_SYNC_REG(wled->sink_base), reg); |
| 92 | |
| 93 | return 0; |
| 94 | } |
| 95 | |
| 96 | static int qpnp_wled_enable(struct qpnp_wled *wled, |
| 97 | uint16_t base_addr, bool state) |
| 98 | { |
| 99 | uint8_t reg; |
| 100 | |
| 101 | reg = pm8x41_wled_reg_read( |
| 102 | QPNP_WLED_MODULE_EN_REG(base_addr)); |
Aparna Mallavarapu | 083766b | 2014-07-21 21:04:48 +0530 | [diff] [blame] | 103 | reg &= QPNP_WLED_MODULE_EN_MASK; |
| 104 | reg |= (state << QPNP_WLED_MODULE_EN_SHIFT); |
| 105 | pm8x41_wled_reg_write(QPNP_WLED_MODULE_EN_REG(base_addr), reg); |
| 106 | |
| 107 | return 0; |
| 108 | } |
| 109 | |
Vishnuvardhan Prodduturi | af59b91 | 2015-10-20 21:14:27 +0530 | [diff] [blame] | 110 | static int qpnp_wled_ibb_swire_rdy(struct qpnp_wled *wled, |
| 111 | uint16_t base_addr, bool state) |
| 112 | { |
| 113 | uint8_t reg; |
| 114 | |
| 115 | reg = pm8x41_wled_reg_read( |
| 116 | QPNP_WLED_MODULE_EN_REG(base_addr)); |
| 117 | /* Do not enable IBB module when SWIRE ready is set */ |
| 118 | reg &= ~(QPNP_IBB_SWIRE_RDY_MASK | QPNP_IBB_MODULE_EN_MASK); |
| 119 | reg |= (state << QPNP_IBB_SWIRE_RDY_SHIFT); |
| 120 | pm8x41_wled_reg_write(QPNP_WLED_MODULE_EN_REG(base_addr), reg); |
| 121 | |
| 122 | return 0; |
| 123 | } |
| 124 | |
Aparna Mallavarapu | 083766b | 2014-07-21 21:04:48 +0530 | [diff] [blame] | 125 | int qpnp_ibb_enable(bool state) |
| 126 | { |
| 127 | int rc = 0; |
| 128 | uint8_t reg; |
| 129 | |
| 130 | if (!gwled) { |
| 131 | dprintf(CRITICAL, "%s: wled is not initialized yet\n", __func__); |
| 132 | return ERROR; |
| 133 | } |
| 134 | |
| 135 | /* enable lab */ |
| 136 | if (gwled->ibb_bias_active) { |
| 137 | rc = qpnp_wled_enable(gwled, gwled->lab_base, state); |
Aparna Mallavarapu | a42de90 | 2014-12-08 17:25:44 -0800 | [diff] [blame] | 138 | udelay(QPNP_WLED_LAB_START_DLY_US + 1); |
Aparna Mallavarapu | 083766b | 2014-07-21 21:04:48 +0530 | [diff] [blame] | 139 | if (rc < 0) |
| 140 | return rc; |
Aparna Mallavarapu | 083766b | 2014-07-21 21:04:48 +0530 | [diff] [blame] | 141 | } else { |
| 142 | reg = pm8x41_wled_reg_read(QPNP_WLED_LAB_IBB_RDY_REG(gwled->lab_base)); |
Aparna Mallavarapu | 083766b | 2014-07-21 21:04:48 +0530 | [diff] [blame] | 143 | |
| 144 | reg &= QPNP_WLED_MODULE_EN_MASK; |
| 145 | reg |= (state << QPNP_WLED_MODULE_EN_SHIFT); |
| 146 | pm8x41_wled_reg_write(QPNP_WLED_LAB_IBB_RDY_REG(gwled->lab_base), reg); |
| 147 | } |
| 148 | |
Vishnuvardhan Prodduturi | af59b91 | 2015-10-20 21:14:27 +0530 | [diff] [blame] | 149 | if (gwled->disp_type_amoled && gwled->lab_ibb_swire_control) |
| 150 | rc = qpnp_wled_ibb_swire_rdy(gwled, gwled->ibb_base, state); |
| 151 | else |
| 152 | rc = qpnp_wled_enable(gwled, gwled->ibb_base, state); |
Aparna Mallavarapu | 083766b | 2014-07-21 21:04:48 +0530 | [diff] [blame] | 153 | |
| 154 | return rc; |
| 155 | } |
| 156 | |
| 157 | /* enable / disable wled brightness */ |
| 158 | void qpnp_wled_enable_backlight(int enable) |
| 159 | { |
Veera Sundaram Sankaran | 4e23fab | 2014-12-09 13:54:32 -0800 | [diff] [blame] | 160 | int rc; |
Aparna Mallavarapu | 083766b | 2014-07-21 21:04:48 +0530 | [diff] [blame] | 161 | |
| 162 | if (!gwled) { |
| 163 | dprintf(CRITICAL, "%s: wled is not initialized yet\n", __func__); |
Veera Sundaram Sankaran | 4e23fab | 2014-12-09 13:54:32 -0800 | [diff] [blame] | 164 | return; |
Aparna Mallavarapu | 083766b | 2014-07-21 21:04:48 +0530 | [diff] [blame] | 165 | } |
| 166 | |
| 167 | if (enable) { |
| 168 | rc = qpnp_wled_set_level(gwled, QPNP_WLED_MAX_BR_LEVEL); |
| 169 | if (rc) { |
| 170 | dprintf(CRITICAL,"wled set level failed\n"); |
| 171 | return; |
| 172 | } |
| 173 | } |
Aparna Mallavarapu | 083766b | 2014-07-21 21:04:48 +0530 | [diff] [blame] | 174 | |
Vishnuvardhan Prodduturi | af59b91 | 2015-10-20 21:14:27 +0530 | [diff] [blame] | 175 | if (!gwled->disp_type_amoled || !gwled->wled_avdd_control) { |
| 176 | rc = qpnp_wled_enable(gwled, gwled->ctrl_base, enable); |
| 177 | if (rc) { |
| 178 | dprintf(CRITICAL, "wled %sable failed\n", |
| 179 | enable ? "en" : "dis"); |
| 180 | return; |
| 181 | } |
Aparna Mallavarapu | 083766b | 2014-07-21 21:04:48 +0530 | [diff] [blame] | 182 | } |
| 183 | |
| 184 | } |
| 185 | |
| 186 | static int qpnp_wled_set_display_type(struct qpnp_wled *wled, uint16_t base_addr) |
| 187 | { |
Aparna Mallavarapu | 083766b | 2014-07-21 21:04:48 +0530 | [diff] [blame] | 188 | uint8_t reg = 0; |
Parth Dixit | b1461bf | 2015-06-24 20:51:08 +0530 | [diff] [blame] | 189 | int rc; |
Aparna Mallavarapu | 083766b | 2014-07-21 21:04:48 +0530 | [diff] [blame] | 190 | |
| 191 | /* display type */ |
| 192 | reg = pm8x41_wled_reg_read(QPNP_WLED_DISP_SEL_REG(base_addr)); |
Aparna Mallavarapu | 083766b | 2014-07-21 21:04:48 +0530 | [diff] [blame] | 193 | |
| 194 | reg &= QPNP_WLED_DISP_SEL_MASK; |
| 195 | reg |= (wled->disp_type_amoled << QPNP_WLED_DISP_SEL_SHIFT); |
Parth Dixit | b1461bf | 2015-06-24 20:51:08 +0530 | [diff] [blame] | 196 | |
| 197 | rc = qpnp_wled_sec_access(wled, base_addr); |
| 198 | if (rc) |
| 199 | return rc; |
| 200 | |
Aparna Mallavarapu | 083766b | 2014-07-21 21:04:48 +0530 | [diff] [blame] | 201 | pm8x41_wled_reg_write(QPNP_WLED_DISP_SEL_REG(base_addr), reg); |
| 202 | |
| 203 | return 0; |
| 204 | } |
| 205 | |
| 206 | static int qpnp_wled_module_ready(struct qpnp_wled *wled, uint16_t base_addr, bool state) |
| 207 | { |
Aparna Mallavarapu | 083766b | 2014-07-21 21:04:48 +0530 | [diff] [blame] | 208 | uint8_t reg; |
| 209 | |
| 210 | reg = pm8x41_wled_reg_read( |
| 211 | QPNP_WLED_MODULE_RDY_REG(base_addr)); |
Aparna Mallavarapu | 083766b | 2014-07-21 21:04:48 +0530 | [diff] [blame] | 212 | reg &= QPNP_WLED_MODULE_RDY_MASK; |
| 213 | reg |= (state << QPNP_WLED_MODULE_RDY_SHIFT); |
| 214 | pm8x41_wled_reg_write(QPNP_WLED_MODULE_RDY_REG(base_addr), reg); |
| 215 | |
| 216 | return 0; |
| 217 | } |
| 218 | |
| 219 | /* Configure WLED registers */ |
| 220 | static int qpnp_wled_config(struct qpnp_wled *wled) |
| 221 | { |
| 222 | int rc, i, temp; |
| 223 | uint8_t reg = 0; |
| 224 | |
| 225 | /* Configure display type */ |
| 226 | rc = qpnp_wled_set_display_type(wled, wled->ctrl_base); |
| 227 | if (rc < 0) |
| 228 | return rc; |
| 229 | |
Vishnuvardhan Prodduturi | af59b91 | 2015-10-20 21:14:27 +0530 | [diff] [blame] | 230 | /* Recommended WLED MDOS settings for AMOLED */ |
| 231 | if (wled->disp_type_amoled) { |
| 232 | pm8x41_wled_reg_write(QPNP_WLED_VLOOP_COMP_RES(wled->ctrl_base), |
| 233 | 0x8F); |
| 234 | pm8x41_wled_reg_write(QPNP_WLED_VLOOP_COMP_GM(wled->ctrl_base), |
| 235 | 0x81); |
| 236 | pm8x41_wled_reg_write(QPNP_WLED_PSM_CTRL(wled->ctrl_base), |
| 237 | 0x83); |
| 238 | |
| 239 | rc = qpnp_wled_sec_access(wled, wled->ctrl_base); |
| 240 | if (rc) |
| 241 | return rc; |
| 242 | pm8x41_wled_reg_write(QPNP_WLED_TEST4(wled->ctrl_base), 0x13); |
| 243 | } |
| 244 | |
Aparna Mallavarapu | 083766b | 2014-07-21 21:04:48 +0530 | [diff] [blame] | 245 | /* Configure the FEEDBACK OUTPUT register */ |
| 246 | reg = pm8x41_wled_reg_read( |
| 247 | QPNP_WLED_FDBK_OP_REG(wled->ctrl_base)); |
Aparna Mallavarapu | 083766b | 2014-07-21 21:04:48 +0530 | [diff] [blame] | 248 | reg &= QPNP_WLED_FDBK_OP_MASK; |
| 249 | reg |= wled->fdbk_op; |
| 250 | pm8x41_wled_reg_write(QPNP_WLED_FDBK_OP_REG(wled->ctrl_base), reg); |
| 251 | |
| 252 | /* Configure the VREF register */ |
| 253 | if (wled->vref_mv < QPNP_WLED_VREF_MIN_MV) |
| 254 | wled->vref_mv = QPNP_WLED_VREF_MIN_MV; |
| 255 | else if (wled->vref_mv > QPNP_WLED_VREF_MAX_MV) |
| 256 | wled->vref_mv = QPNP_WLED_VREF_MAX_MV; |
| 257 | |
| 258 | reg = pm8x41_wled_reg_read( |
| 259 | QPNP_WLED_VREF_REG(wled->ctrl_base)); |
Aparna Mallavarapu | 083766b | 2014-07-21 21:04:48 +0530 | [diff] [blame] | 260 | reg &= QPNP_WLED_VREF_MASK; |
| 261 | temp = wled->vref_mv - QPNP_WLED_VREF_MIN_MV; |
| 262 | reg |= (temp / QPNP_WLED_VREF_STEP_MV); |
| 263 | pm8x41_wled_reg_write(QPNP_WLED_VREF_REG(wled->ctrl_base), reg); |
| 264 | |
| 265 | /* Configure the ILIM register */ |
| 266 | if (wled->ilim_ma < QPNP_WLED_ILIM_MIN_MA) |
| 267 | wled->ilim_ma = QPNP_WLED_ILIM_MIN_MA; |
| 268 | else if (wled->ilim_ma > QPNP_WLED_ILIM_MAX_MA) |
| 269 | wled->ilim_ma = QPNP_WLED_ILIM_MAX_MA; |
| 270 | |
| 271 | reg = pm8x41_wled_reg_read( |
| 272 | QPNP_WLED_ILIM_REG(wled->ctrl_base)); |
Alex Sarraf | 9bd81b9 | 2015-05-20 15:59:32 -0700 | [diff] [blame] | 273 | temp = (wled->ilim_ma / QPNP_WLED_ILIM_STEP_MA); |
| 274 | if (temp != (reg & ~QPNP_WLED_ILIM_MASK)) { |
| 275 | reg &= QPNP_WLED_ILIM_MASK; |
| 276 | reg |= temp; |
| 277 | reg |= QPNP_WLED_ILIM_OVERWRITE; |
| 278 | pm8x41_wled_reg_write(QPNP_WLED_ILIM_REG(wled->ctrl_base), reg); |
| 279 | } |
Aparna Mallavarapu | 083766b | 2014-07-21 21:04:48 +0530 | [diff] [blame] | 280 | |
| 281 | /* Configure the MAX BOOST DUTY register */ |
| 282 | if (wled->boost_duty_ns < QPNP_WLED_BOOST_DUTY_MIN_NS) |
| 283 | wled->boost_duty_ns = QPNP_WLED_BOOST_DUTY_MIN_NS; |
| 284 | else if (wled->boost_duty_ns > QPNP_WLED_BOOST_DUTY_MAX_NS) |
| 285 | wled->boost_duty_ns = QPNP_WLED_BOOST_DUTY_MAX_NS; |
| 286 | |
| 287 | reg = pm8x41_wled_reg_read( |
| 288 | QPNP_WLED_BOOST_DUTY_REG(wled->ctrl_base)); |
Aparna Mallavarapu | 083766b | 2014-07-21 21:04:48 +0530 | [diff] [blame] | 289 | reg &= QPNP_WLED_BOOST_DUTY_MASK; |
| 290 | reg |= (wled->boost_duty_ns / QPNP_WLED_BOOST_DUTY_STEP_NS); |
| 291 | pm8x41_wled_reg_write(QPNP_WLED_BOOST_DUTY_REG(wled->ctrl_base), reg); |
| 292 | |
| 293 | /* Configure the SWITCHING FREQ register */ |
| 294 | if (wled->switch_freq_khz == QPNP_WLED_SWITCH_FREQ_1600_KHZ) |
| 295 | temp = QPNP_WLED_SWITCH_FREQ_1600_KHZ_CODE; |
| 296 | else |
| 297 | temp = QPNP_WLED_SWITCH_FREQ_800_KHZ_CODE; |
| 298 | |
| 299 | reg = pm8x41_wled_reg_read( |
| 300 | QPNP_WLED_SWITCH_FREQ_REG(wled->ctrl_base)); |
Aparna Mallavarapu | 083766b | 2014-07-21 21:04:48 +0530 | [diff] [blame] | 301 | reg &= QPNP_WLED_SWITCH_FREQ_MASK; |
| 302 | reg |= temp; |
| 303 | pm8x41_wled_reg_write(QPNP_WLED_SWITCH_FREQ_REG(wled->ctrl_base), reg); |
| 304 | |
| 305 | /* Configure the OVP register */ |
| 306 | if (wled->ovp_mv <= QPNP_WLED_OVP_17800_MV) { |
| 307 | wled->ovp_mv = QPNP_WLED_OVP_17800_MV; |
| 308 | temp = 3; |
| 309 | } else if (wled->ovp_mv <= QPNP_WLED_OVP_19400_MV) { |
| 310 | wled->ovp_mv = QPNP_WLED_OVP_19400_MV; |
| 311 | temp = 2; |
| 312 | } else if (wled->ovp_mv <= QPNP_WLED_OVP_29500_MV) { |
| 313 | wled->ovp_mv = QPNP_WLED_OVP_29500_MV; |
| 314 | temp = 1; |
| 315 | } else { |
| 316 | wled->ovp_mv = QPNP_WLED_OVP_31000_MV; |
| 317 | temp = 0; |
| 318 | } |
| 319 | |
| 320 | reg = pm8x41_wled_reg_read( |
| 321 | QPNP_WLED_OVP_REG(wled->ctrl_base)); |
Aparna Mallavarapu | 083766b | 2014-07-21 21:04:48 +0530 | [diff] [blame] | 322 | reg &= QPNP_WLED_OVP_MASK; |
| 323 | reg |= temp; |
| 324 | pm8x41_wled_reg_write(QPNP_WLED_OVP_REG(wled->ctrl_base), reg); |
| 325 | |
Parth Dixit | e46b1a2 | 2016-06-06 19:16:20 +0530 | [diff] [blame] | 326 | if (wled->disp_type_amoled) { |
| 327 | for (i = 0; i < NUM_SUPPORTED_AVDD_VOLTAGES; i++) { |
| 328 | if (QPNP_WLED_AVDD_DEFAULT_VOLTAGE_MV == qpnp_wled_avdd_target_voltages[i]) |
| 329 | break; |
| 330 | } |
| 331 | if (i == NUM_SUPPORTED_AVDD_VOLTAGES) |
| 332 | { |
| 333 | dprintf(CRITICAL, "Invalid avdd target voltage specified \n"); |
| 334 | return ERR_NOT_VALID; |
| 335 | } |
| 336 | /* Update WLED_OVP register based on desired target voltage */ |
| 337 | reg = qpnp_wled_ovp_reg_settings[i]; |
| 338 | pm8x41_wled_reg_write(QPNP_WLED_OVP_REG(wled->ctrl_base), reg); |
| 339 | /* Update WLED_TRIM register based on desired target voltage */ |
| 340 | reg = pm8x41_wled_reg_read( |
| 341 | QPNP_WLED_REF_7P7_TRIM_REG(wled->ctrl_base)); |
| 342 | reg += qpnp_wled_avdd_trim_adjustments[i]; |
| 343 | if ((int8_t)reg < QPNP_WLED_AVDD_MIN_TRIM_VALUE) |
| 344 | reg = QPNP_WLED_AVDD_MIN_TRIM_VALUE; |
| 345 | else if((int8_t)reg > QPNP_WLED_AVDD_MAX_TRIM_VALUE) |
| 346 | reg = QPNP_WLED_AVDD_MAX_TRIM_VALUE; |
| 347 | |
| 348 | rc = qpnp_wled_sec_access(wled, wled->ctrl_base); |
| 349 | if (rc) |
| 350 | return rc; |
| 351 | |
| 352 | temp = pm8x41_wled_reg_read( |
| 353 | QPNP_WLED_REF_7P7_TRIM_REG(wled->ctrl_base)); |
| 354 | temp &= ~QPNP_WLED_7P7_TRIM_MASK; |
| 355 | temp |= (reg & QPNP_WLED_7P7_TRIM_MASK); |
| 356 | pm8x41_wled_reg_write(QPNP_WLED_REF_7P7_TRIM_REG(wled->ctrl_base), temp); |
| 357 | /* Write to spare to avoid reconfiguration in HLOS */ |
| 358 | reg = pm8x41_wled_reg_read( |
| 359 | QPNP_WLED_CTRL_SPARE_REG(wled->ctrl_base)); |
| 360 | reg |= QPNP_WLED_AVDD_SET_BIT; |
| 361 | pm8x41_wled_reg_write(QPNP_WLED_CTRL_SPARE_REG(wled->ctrl_base), reg); |
| 362 | } |
| 363 | |
Aparna Mallavarapu | 083766b | 2014-07-21 21:04:48 +0530 | [diff] [blame] | 364 | /* Configure the MODULATION register */ |
| 365 | if (wled->mod_freq_khz <= QPNP_WLED_MOD_FREQ_1200_KHZ) { |
| 366 | wled->mod_freq_khz = QPNP_WLED_MOD_FREQ_1200_KHZ; |
| 367 | temp = 3; |
| 368 | } else if (wled->mod_freq_khz <= QPNP_WLED_MOD_FREQ_2400_KHZ) { |
| 369 | wled->mod_freq_khz = QPNP_WLED_MOD_FREQ_2400_KHZ; |
| 370 | temp = 2; |
| 371 | } else if (wled->mod_freq_khz <= QPNP_WLED_MOD_FREQ_9600_KHZ) { |
| 372 | wled->mod_freq_khz = QPNP_WLED_MOD_FREQ_9600_KHZ; |
| 373 | temp = 1; |
| 374 | } else { |
| 375 | wled->mod_freq_khz = QPNP_WLED_MOD_FREQ_19200_KHZ; |
| 376 | temp = 0; |
| 377 | } |
| 378 | reg = pm8x41_wled_reg_read(QPNP_WLED_MOD_REG(wled->sink_base)); |
Aparna Mallavarapu | 083766b | 2014-07-21 21:04:48 +0530 | [diff] [blame] | 379 | |
| 380 | reg &= QPNP_WLED_MOD_FREQ_MASK; |
| 381 | reg |= (temp << QPNP_WLED_MOD_FREQ_SHIFT); |
| 382 | |
| 383 | reg &= QPNP_WLED_PHASE_STAG_MASK; |
| 384 | reg |= (wled->en_phase_stag << QPNP_WLED_PHASE_STAG_SHIFT); |
| 385 | |
| 386 | reg &= QPNP_WLED_DIM_RES_MASK; |
| 387 | reg |= (wled->en_9b_dim_res << QPNP_WLED_DIM_RES_SHIFT); |
| 388 | |
| 389 | if (wled->dim_mode == QPNP_WLED_DIM_HYBRID) { |
| 390 | reg &= QPNP_WLED_DIM_HYB_MASK; |
| 391 | reg |= (1 << QPNP_WLED_DIM_HYB_SHIFT); |
| 392 | } else { |
| 393 | reg &= QPNP_WLED_DIM_HYB_MASK; |
| 394 | reg |= (0 << QPNP_WLED_DIM_HYB_SHIFT); |
| 395 | reg &= QPNP_WLED_DIM_ANA_MASK; |
| 396 | reg |= wled->dim_mode; |
| 397 | } |
| 398 | |
| 399 | pm8x41_wled_reg_write(QPNP_WLED_MOD_REG(wled->sink_base), reg); |
| 400 | |
| 401 | /* Configure the HYBRID THRESHOLD register */ |
| 402 | if (wled->hyb_thres < QPNP_WLED_HYB_THRES_MIN) |
| 403 | wled->hyb_thres = QPNP_WLED_HYB_THRES_MIN; |
| 404 | else if (wled->hyb_thres > QPNP_WLED_HYB_THRES_MAX) |
| 405 | wled->hyb_thres = QPNP_WLED_HYB_THRES_MAX; |
| 406 | |
| 407 | reg = pm8x41_wled_reg_read( |
| 408 | QPNP_WLED_HYB_THRES_REG(wled->sink_base)); |
Aparna Mallavarapu | 083766b | 2014-07-21 21:04:48 +0530 | [diff] [blame] | 409 | |
| 410 | reg &= QPNP_WLED_HYB_THRES_MASK; |
| 411 | temp = fls(wled->hyb_thres / QPNP_WLED_HYB_THRES_MIN) - 1; |
| 412 | reg |= temp; |
| 413 | pm8x41_wled_reg_write(QPNP_WLED_HYB_THRES_REG(wled->sink_base), reg); |
| 414 | |
| 415 | for (i = 0; i < wled->num_strings; i++) { |
| 416 | if (wled->strings[i] >= QPNP_WLED_MAX_STRINGS) { |
| 417 | dprintf(CRITICAL,"Invalid string number\n"); |
| 418 | return ERR_NOT_VALID; |
| 419 | } |
| 420 | |
| 421 | /* MODULATOR */ |
| 422 | reg = pm8x41_wled_reg_read( |
| 423 | QPNP_WLED_MOD_EN_REG(wled->sink_base, |
| 424 | wled->strings[i])); |
Aparna Mallavarapu | 083766b | 2014-07-21 21:04:48 +0530 | [diff] [blame] | 425 | reg &= QPNP_WLED_MOD_EN_MASK; |
| 426 | reg |= (QPNP_WLED_MOD_EN << QPNP_WLED_MOD_EN_SHFT); |
| 427 | pm8x41_wled_reg_write(QPNP_WLED_MOD_EN_REG(wled->sink_base, |
| 428 | wled->strings[i]), reg); |
| 429 | |
| 430 | /* SYNC DELAY */ |
Veera Sundaram Sankaran | 4e23fab | 2014-12-09 13:54:32 -0800 | [diff] [blame] | 431 | if (wled->sync_dly_us > QPNP_WLED_SYNC_DLY_MAX_US) |
Aparna Mallavarapu | 083766b | 2014-07-21 21:04:48 +0530 | [diff] [blame] | 432 | wled->sync_dly_us = QPNP_WLED_SYNC_DLY_MAX_US; |
| 433 | |
| 434 | reg = pm8x41_wled_reg_read( |
| 435 | QPNP_WLED_SYNC_DLY_REG(wled->sink_base, |
| 436 | wled->strings[i])); |
Aparna Mallavarapu | 083766b | 2014-07-21 21:04:48 +0530 | [diff] [blame] | 437 | reg &= QPNP_WLED_SYNC_DLY_MASK; |
| 438 | temp = wled->sync_dly_us / QPNP_WLED_SYNC_DLY_STEP_US; |
| 439 | reg |= temp; |
| 440 | pm8x41_wled_reg_write(QPNP_WLED_SYNC_DLY_REG(wled->sink_base, |
| 441 | wled->strings[i]), reg); |
| 442 | |
| 443 | /* FULL SCALE CURRENT */ |
Veera Sundaram Sankaran | 4e23fab | 2014-12-09 13:54:32 -0800 | [diff] [blame] | 444 | if (wled->fs_curr_ua > QPNP_WLED_FS_CURR_MAX_UA) |
Aparna Mallavarapu | 083766b | 2014-07-21 21:04:48 +0530 | [diff] [blame] | 445 | wled->fs_curr_ua = QPNP_WLED_FS_CURR_MAX_UA; |
| 446 | |
| 447 | reg = pm8x41_wled_reg_read( |
| 448 | QPNP_WLED_FS_CURR_REG(wled->sink_base, |
| 449 | wled->strings[i])); |
Aparna Mallavarapu | 083766b | 2014-07-21 21:04:48 +0530 | [diff] [blame] | 450 | reg &= QPNP_WLED_FS_CURR_MASK; |
| 451 | temp = wled->fs_curr_ua / QPNP_WLED_FS_CURR_STEP_UA; |
| 452 | reg |= temp; |
| 453 | pm8x41_wled_reg_write(QPNP_WLED_FS_CURR_REG(wled->sink_base, |
| 454 | wled->strings[i]), reg); |
| 455 | |
| 456 | /* CABC */ |
| 457 | reg = pm8x41_wled_reg_read( |
| 458 | QPNP_WLED_CABC_REG(wled->sink_base, |
| 459 | wled->strings[i])); |
Aparna Mallavarapu | 083766b | 2014-07-21 21:04:48 +0530 | [diff] [blame] | 460 | reg &= QPNP_WLED_CABC_MASK; |
| 461 | reg |= (wled->en_cabc << QPNP_WLED_CABC_SHIFT); |
| 462 | pm8x41_wled_reg_write(QPNP_WLED_CABC_REG(wled->sink_base, |
| 463 | wled->strings[i]), reg); |
| 464 | |
| 465 | /* Enable CURRENT SINK */ |
| 466 | reg = pm8x41_wled_reg_read( |
| 467 | QPNP_WLED_CURR_SINK_REG(wled->sink_base)); |
Aparna Mallavarapu | 083766b | 2014-07-21 21:04:48 +0530 | [diff] [blame] | 468 | temp = wled->strings[i] + QPNP_WLED_CURR_SINK_SHIFT; |
| 469 | reg |= (1 << temp); |
| 470 | pm8x41_wled_reg_write(QPNP_WLED_CURR_SINK_REG(wled->sink_base), reg); |
| 471 | } |
| 472 | |
| 473 | /* LAB fast precharge */ |
| 474 | reg = pm8x41_wled_reg_read( |
| 475 | QPNP_WLED_LAB_FAST_PC_REG(wled->lab_base)); |
Aparna Mallavarapu | 083766b | 2014-07-21 21:04:48 +0530 | [diff] [blame] | 476 | reg &= QPNP_WLED_LAB_FAST_PC_MASK; |
| 477 | reg |= (wled->lab_fast_precharge << QPNP_WLED_LAB_FAST_PC_SHIFT); |
wufeng.jiang | b100848 | 2016-06-14 10:41:39 +0800 | [diff] [blame] | 478 | /* LAB max precharge time */ |
| 479 | reg &= QPNP_WLED_PRECHARGE_MASK; |
| 480 | reg |= (wled->lab_max_precharge_time); |
Aparna Mallavarapu | 083766b | 2014-07-21 21:04:48 +0530 | [diff] [blame] | 481 | pm8x41_wled_reg_write(QPNP_WLED_LAB_FAST_PC_REG(wled->lab_base), reg); |
| 482 | |
| 483 | /* Configure lab display type */ |
| 484 | rc = qpnp_wled_set_display_type(wled, wled->lab_base); |
| 485 | if (rc < 0) |
| 486 | return rc; |
| 487 | |
| 488 | /* make LAB module ready */ |
| 489 | rc = qpnp_wled_module_ready(wled, wled->lab_base, true); |
| 490 | if (rc < 0) |
| 491 | return rc; |
| 492 | |
Vishnuvardhan Prodduturi | af59b91 | 2015-10-20 21:14:27 +0530 | [diff] [blame] | 493 | /* Disable LAB pulse skipping for AMOLED */ |
| 494 | if (wled->disp_type_amoled) |
| 495 | pm8x41_wled_reg_write(wled->lab_base + |
| 496 | QPNP_LABIBB_PS_CTL, 0x00); |
| 497 | |
Aparna Mallavarapu | 083766b | 2014-07-21 21:04:48 +0530 | [diff] [blame] | 498 | /* IBB active bias */ |
Veera Sundaram Sankaran | 4e23fab | 2014-12-09 13:54:32 -0800 | [diff] [blame] | 499 | if (wled->ibb_pwrup_dly_ms > QPNP_WLED_IBB_PWRUP_DLY_MAX_MS) |
Aparna Mallavarapu | 083766b | 2014-07-21 21:04:48 +0530 | [diff] [blame] | 500 | wled->ibb_pwrup_dly_ms = QPNP_WLED_IBB_PWRUP_DLY_MAX_MS; |
| 501 | |
Veera Sundaram Sankaran | 4e23fab | 2014-12-09 13:54:32 -0800 | [diff] [blame] | 502 | if (wled->ibb_pwrdn_dly_ms > QPNP_WLED_IBB_PWRDN_DLY_MAX_MS) |
Aparna Mallavarapu | a42de90 | 2014-12-08 17:25:44 -0800 | [diff] [blame] | 503 | wled->ibb_pwrdn_dly_ms = QPNP_WLED_IBB_PWRDN_DLY_MAX_MS; |
| 504 | |
Aparna Mallavarapu | 083766b | 2014-07-21 21:04:48 +0530 | [diff] [blame] | 505 | reg = pm8x41_wled_reg_read( |
| 506 | QPNP_WLED_IBB_BIAS_REG(wled->ibb_base)); |
Aparna Mallavarapu | 083766b | 2014-07-21 21:04:48 +0530 | [diff] [blame] | 507 | |
| 508 | reg &= QPNP_WLED_IBB_BIAS_MASK; |
| 509 | reg |= (!wled->ibb_bias_active << QPNP_WLED_IBB_BIAS_SHIFT); |
| 510 | |
Aparna Mallavarapu | a42de90 | 2014-12-08 17:25:44 -0800 | [diff] [blame] | 511 | temp = wled->ibb_pwrup_dly_ms; |
Aparna Mallavarapu | 083766b | 2014-07-21 21:04:48 +0530 | [diff] [blame] | 512 | reg &= QPNP_WLED_IBB_PWRUP_DLY_MASK; |
| 513 | reg |= (temp << QPNP_WLED_IBB_PWRUP_DLY_SHIFT); |
Channagoud Kadabi | f5f0ded | 2015-02-25 13:42:18 -0800 | [diff] [blame] | 514 | /* Power down delay bits could already be set, clear them before |
| 515 | * or'ing new values |
| 516 | */ |
| 517 | reg &= ~(PWRDN_DLY2_MASK); |
Aparna Mallavarapu | a42de90 | 2014-12-08 17:25:44 -0800 | [diff] [blame] | 518 | reg |= wled->ibb_pwrdn_dly_ms; |
| 519 | reg |= (wled->ibb_discharge_en << 2); |
Aparna Mallavarapu | 083766b | 2014-07-21 21:04:48 +0530 | [diff] [blame] | 520 | |
| 521 | rc = qpnp_wled_sec_access(wled, wled->ibb_base); |
| 522 | if (rc) |
| 523 | return rc; |
| 524 | |
| 525 | pm8x41_wled_reg_write(QPNP_WLED_IBB_BIAS_REG(wled->ibb_base), reg); |
| 526 | |
| 527 | /* Configure ibb display type */ |
| 528 | rc = qpnp_wled_set_display_type(wled, wled->ibb_base); |
| 529 | if (rc < 0) |
| 530 | return rc; |
| 531 | |
| 532 | /* make IBB module ready */ |
| 533 | rc = qpnp_wled_module_ready(wled, wled->ibb_base, true); |
| 534 | if (rc < 0) |
| 535 | return rc; |
| 536 | |
Aparna Mallavarapu | a42de90 | 2014-12-08 17:25:44 -0800 | [diff] [blame] | 537 | rc = qpnp_labibb_regulator_set_voltage(wled); |
| 538 | if (rc < 0) |
| 539 | return rc; |
| 540 | |
Aparna Mallavarapu | 083766b | 2014-07-21 21:04:48 +0530 | [diff] [blame] | 541 | return 0; |
| 542 | } |
| 543 | |
| 544 | /* Setup wled default parameters */ |
Aparna Mallavarapu | a42de90 | 2014-12-08 17:25:44 -0800 | [diff] [blame] | 545 | static int qpnp_wled_setup(struct qpnp_wled *wled, struct qpnp_wled_config_data *config) |
Aparna Mallavarapu | 083766b | 2014-07-21 21:04:48 +0530 | [diff] [blame] | 546 | { |
Veera Sundaram Sankaran | 4e23fab | 2014-12-09 13:54:32 -0800 | [diff] [blame] | 547 | int i; |
Aparna Mallavarapu | 083766b | 2014-07-21 21:04:48 +0530 | [diff] [blame] | 548 | |
| 549 | wled->sink_base = QPNP_WLED_SINK_BASE; |
| 550 | wled->ctrl_base = QPNP_WLED_CTRL_BASE; |
| 551 | wled->ibb_base = QPNP_WLED_IBB_BASE; |
| 552 | wled->lab_base = QPNP_WLED_LAB_BASE; |
| 553 | wled->fdbk_op = QPNP_WLED_FDBK_AUTO; |
| 554 | wled->vref_mv = QPNP_WLED_DFLT_VREF_MV; |
| 555 | wled->switch_freq_khz = QPNP_WLED_SWITCH_FREQ_800_KHZ; |
| 556 | wled->ovp_mv = QPNP_WLED_OVP_29500_MV; |
| 557 | wled->ilim_ma = QPNP_WLED_DFLT_ILIM_MA; |
| 558 | wled->boost_duty_ns = QPNP_WLED_BOOST_DUTY_MIN_NS; |
| 559 | wled->mod_freq_khz = QPNP_WLED_MOD_FREQ_19200_KHZ; |
| 560 | wled->dim_mode = QPNP_WLED_DIM_HYBRID; |
| 561 | wled->dim_shape = QPNP_WLED_DIM_SHAPE_LINEAR; |
| 562 | |
| 563 | if (wled->dim_mode == QPNP_WLED_DIM_HYBRID) { |
| 564 | wled->hyb_thres = QPNP_WLED_DFLT_HYB_THRES; |
| 565 | } |
| 566 | |
| 567 | wled->sync_dly_us = 800; |
| 568 | wled->fs_curr_ua = 16000; |
| 569 | wled->en_9b_dim_res = 0; |
| 570 | wled->en_phase_stag = true; |
| 571 | wled->en_cabc = 0; |
| 572 | |
| 573 | wled->num_strings = QPNP_WLED_MAX_STRINGS; |
| 574 | for (i = 0; i < wled->num_strings; i++) |
| 575 | wled->strings[i] = i; |
| 576 | |
| 577 | wled->ibb_bias_active = false; |
Wufeng | 7bae3c9 | 2016-04-27 13:02:15 +0800 | [diff] [blame] | 578 | wled->lab_fast_precharge = false; |
wufeng.jiang | b100848 | 2016-06-14 10:41:39 +0800 | [diff] [blame] | 579 | wled->lab_max_precharge_time = QPNP_WLED_PRECHARGE_US500; |
Aparna Mallavarapu | a42de90 | 2014-12-08 17:25:44 -0800 | [diff] [blame] | 580 | wled->ibb_pwrup_dly_ms = config->pwr_up_delay; |
| 581 | wled->ibb_pwrdn_dly_ms = config->pwr_down_delay; |
| 582 | wled->ibb_discharge_en = config->ibb_discharge_en; |
| 583 | wled->disp_type_amoled = config->display_type; |
| 584 | wled->lab_min_volt = config->lab_min_volt; |
| 585 | wled->lab_max_volt = config->lab_max_volt; |
| 586 | wled->ibb_min_volt = config->ibb_min_volt; |
| 587 | wled->ibb_max_volt = config->ibb_max_volt; |
| 588 | wled->ibb_init_volt = config->ibb_init_volt; |
| 589 | wled->lab_init_volt = config->lab_init_volt; |
Vishnuvardhan Prodduturi | af59b91 | 2015-10-20 21:14:27 +0530 | [diff] [blame] | 590 | wled->lab_ibb_swire_control = config->lab_ibb_swire_control; |
| 591 | wled->wled_avdd_control = config->wled_avdd_control; |
Aparna Mallavarapu | 083766b | 2014-07-21 21:04:48 +0530 | [diff] [blame] | 592 | |
| 593 | return 0; |
| 594 | } |
| 595 | |
Aparna Mallavarapu | a42de90 | 2014-12-08 17:25:44 -0800 | [diff] [blame] | 596 | int qpnp_wled_init(struct qpnp_wled_config_data *config) |
Aparna Mallavarapu | 083766b | 2014-07-21 21:04:48 +0530 | [diff] [blame] | 597 | { |
Veera Sundaram Sankaran | 4e23fab | 2014-12-09 13:54:32 -0800 | [diff] [blame] | 598 | int rc; |
Aparna Mallavarapu | 083766b | 2014-07-21 21:04:48 +0530 | [diff] [blame] | 599 | struct qpnp_wled *wled; |
| 600 | |
| 601 | wled = malloc(sizeof(struct qpnp_wled)); |
| 602 | if (!wled) |
| 603 | return ERR_NO_MEMORY; |
| 604 | |
| 605 | memset(wled, 0, sizeof(struct qpnp_wled)); |
| 606 | |
Aparna Mallavarapu | a42de90 | 2014-12-08 17:25:44 -0800 | [diff] [blame] | 607 | rc = qpnp_wled_setup(wled, config); |
Aparna Mallavarapu | 083766b | 2014-07-21 21:04:48 +0530 | [diff] [blame] | 608 | if (rc) { |
| 609 | dprintf(CRITICAL, "Setting WLED parameters failed\n"); |
| 610 | return rc; |
| 611 | } |
| 612 | |
| 613 | rc = qpnp_wled_config(wled); |
| 614 | if (rc) { |
| 615 | dprintf(CRITICAL, "wled config failed\n"); |
| 616 | return rc; |
| 617 | } |
| 618 | |
| 619 | gwled = wled; |
| 620 | |
| 621 | return rc; |
| 622 | } |
Aparna Mallavarapu | a42de90 | 2014-12-08 17:25:44 -0800 | [diff] [blame] | 623 | |
| 624 | static int qpnp_labibb_regulator_set_voltage(struct qpnp_wled *wled) |
| 625 | { |
Veera Sundaram Sankaran | 4e23fab | 2014-12-09 13:54:32 -0800 | [diff] [blame] | 626 | int rc = -1; |
| 627 | uint32_t new_uV; |
Aparna Mallavarapu | a42de90 | 2014-12-08 17:25:44 -0800 | [diff] [blame] | 628 | uint8_t val, mask=0; |
| 629 | |
Vishnuvardhan Prodduturi | af59b91 | 2015-10-20 21:14:27 +0530 | [diff] [blame] | 630 | if (!wled->disp_type_amoled || !wled->lab_ibb_swire_control) { |
| 631 | if (wled->lab_min_volt < wled->lab_init_volt) { |
| 632 | dprintf(CRITICAL,"qpnp_lab_regulator_set_voltage failed, min_uV %d is less than init volt %d\n", |
| 633 | wled->lab_min_volt, wled->lab_init_volt); |
| 634 | return rc; |
| 635 | } |
| 636 | |
| 637 | val = (((wled->lab_min_volt - wled->lab_init_volt) + |
| 638 | (IBB_LAB_VREG_STEP_SIZE - 1)) / IBB_LAB_VREG_STEP_SIZE); |
| 639 | new_uV = val * IBB_LAB_VREG_STEP_SIZE + wled->lab_init_volt; |
| 640 | |
| 641 | if (new_uV > wled->lab_max_volt) { |
| 642 | dprintf(CRITICAL,"qpnp_ibb_regulator_set_voltage unable to set voltage (%d %d)\n", |
| 643 | wled->lab_min_volt, wled->lab_max_volt); |
| 644 | return rc; |
| 645 | } |
| 646 | val |= QPNP_LAB_OUTPUT_OVERRIDE_EN; |
| 647 | mask = pm8x41_wled_reg_read(wled->lab_base + |
| 648 | QPNP_LABIBB_OUTPUT_VOLTAGE); |
| 649 | mask &= ~(QPNP_LAB_SET_VOLTAGE_MASK |
| 650 | | QPNP_LAB_OUTPUT_OVERRIDE_EN); |
| 651 | mask |= val & (QPNP_LAB_SET_VOLTAGE_MASK |
| 652 | | QPNP_LAB_OUTPUT_OVERRIDE_EN); |
| 653 | |
| 654 | pm8x41_wled_reg_write(wled->lab_base + |
| 655 | QPNP_LABIBB_OUTPUT_VOLTAGE, mask); |
| 656 | udelay(2); |
| 657 | |
| 658 | /* |
| 659 | * IBB Set Voltage. |
| 660 | * For AMOLED panels, the IBB voltage needs to be |
| 661 | * controlled by panel. |
| 662 | */ |
| 663 | if (wled->ibb_min_volt < wled->ibb_init_volt) { |
| 664 | dprintf(CRITICAL, "qpnp_ibb_regulator_set_voltage failed, min_uV %d is less than init volt %d\n", |
| 665 | wled->ibb_min_volt, wled->ibb_init_volt); |
| 666 | return rc; |
| 667 | } |
| 668 | |
| 669 | val = (((wled->ibb_min_volt - wled->ibb_init_volt) + |
| 670 | (IBB_LAB_VREG_STEP_SIZE - 1)) / IBB_LAB_VREG_STEP_SIZE); |
| 671 | new_uV = val * IBB_LAB_VREG_STEP_SIZE + wled->ibb_init_volt; |
| 672 | if (new_uV > wled->ibb_max_volt) { |
| 673 | dprintf(CRITICAL, "qpnp_ibb_regulator_set_voltage unable to set voltage %d %d\n", |
| 674 | wled->ibb_min_volt, wled->ibb_max_volt); |
| 675 | return rc; |
| 676 | } |
| 677 | val |= QPNP_LAB_OUTPUT_OVERRIDE_EN; |
| 678 | mask = pm8x41_wled_reg_read(wled->ibb_base + |
| 679 | QPNP_LABIBB_OUTPUT_VOLTAGE); |
| 680 | udelay(2); |
| 681 | mask &= ~(QPNP_IBB_SET_VOLTAGE_MASK | |
| 682 | QPNP_LAB_OUTPUT_OVERRIDE_EN); |
| 683 | mask |= (val & (QPNP_IBB_SET_VOLTAGE_MASK | |
| 684 | QPNP_LAB_OUTPUT_OVERRIDE_EN)); |
| 685 | |
| 686 | pm8x41_wled_reg_write(wled->ibb_base + |
| 687 | QPNP_LABIBB_OUTPUT_VOLTAGE, mask); |
| 688 | } else { |
| 689 | pm8x41_wled_reg_write(wled->ibb_base + |
| 690 | QPNP_LABIBB_OUTPUT_VOLTAGE, 0x00); |
Aparna Mallavarapu | a42de90 | 2014-12-08 17:25:44 -0800 | [diff] [blame] | 691 | } |
| 692 | |
Aparna Mallavarapu | a42de90 | 2014-12-08 17:25:44 -0800 | [diff] [blame] | 693 | return 0; |
| 694 | } |