| /* Copyright (c) 2014-2016, The Linux Foundation. All rights reserved. |
| |
| * Redistribution and use in source and binary forms, with or without |
| * modification, are permitted provided that the following conditions are |
| * met: |
| * * Redistributions of source code must retain the above copyright |
| * notice, this list of conditions and the following disclaimer. |
| * * Redistributions in binary form must reproduce the above |
| * copyright notice, this list of conditions and the following |
| * disclaimer in the documentation and/or other materials provided |
| * with the distribution. |
| * * Neither the name of The Linux Foundation nor the names of its |
| * contributors may be used to endorse or promote products derived |
| * from this software without specific prior written permission. |
| * |
| * THIS SOFTWARE IS PROVIDED "AS IS" AND ANY EXPRESS OR IMPLIED |
| * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF |
| * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT |
| * ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS |
| * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR |
| * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF |
| * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR |
| * BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, |
| * WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE |
| * OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN |
| * IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. |
| */ |
| |
| #include <bits.h> |
| #include <debug.h> |
| #include <reg.h> |
| |
| /* base addresses */ |
| #define QPNP_WLED_CTRL_BASE 0xd800 |
| #define QPNP_WLED_SINK_BASE 0xd900 |
| #define QPNP_WLED_IBB_BASE 0xdc00 |
| #define QPNP_WLED_LAB_BASE 0xde00 |
| |
| /* ctrl registers */ |
| #define QPNP_WLED_EN_REG(b) (b + 0x46) |
| #define QPNP_WLED_FDBK_OP_REG(b) (b + 0x48) |
| #define QPNP_WLED_VREF_REG(b) (b + 0x49) |
| #define QPNP_WLED_BOOST_DUTY_REG(b) (b + 0x4B) |
| #define QPNP_WLED_SWITCH_FREQ_REG(b) (b + 0x4C) |
| #define QPNP_WLED_OVP_REG(b) (b + 0x4D) |
| #define QPNP_WLED_ILIM_REG(b) (b + 0x4E) |
| #define QPNP_WLED_VLOOP_COMP_RES(b) (b + 0x55) |
| #define QPNP_WLED_VLOOP_COMP_GM(b) (b + 0x56) |
| #define QPNP_WLED_PSM_EN(b) (b + 0x5A) |
| #define QPNP_WLED_PSM_CTRL(b) (b + 0x5B) |
| #define QPNP_WLED_TEST4(b) (b + 0xE5) |
| #define QPNP_WLED_CTRL_SPARE_REG(b) (b + 0xDF) |
| #define QPNP_WLED_REF_7P7_TRIM_REG(b) (b + 0xF2) |
| |
| #define QPNP_WLED_7P7_TRIM_MASK 0xF |
| #define QPNP_WLED_EN_MASK 0x7F |
| #define QPNP_WLED_EN_SHIFT 7 |
| #define QPNP_WLED_FDBK_OP_MASK 0xF8 |
| #define QPNP_WLED_VREF_MASK 0xF0 |
| #define QPNP_WLED_VREF_STEP_MV 25 |
| #define QPNP_WLED_VREF_MIN_MV 300 |
| #define QPNP_WLED_VREF_MAX_MV 675 |
| #define QPNP_WLED_DFLT_VREF_MV 350 |
| #define QPNP_WLED_ILIM_MASK 0xF8 |
| #define QPNP_WLED_ILIM_MIN_MA 105 |
| #define QPNP_WLED_ILIM_MAX_MA 1980 |
| #define QPNP_WLED_ILIM_STEP_MA 280 |
| #define QPNP_WLED_DFLT_ILIM_MA 980 |
| #define QPNP_WLED_ILIM_OVERWRITE 0x80 |
| #define QPNP_WLED_BOOST_DUTY_MASK 0xFC |
| #define QPNP_WLED_BOOST_DUTY_STEP_NS 52 |
| #define QPNP_WLED_BOOST_DUTY_MIN_NS 26 |
| #define QPNP_WLED_BOOST_DUTY_MAX_NS 156 |
| #define QPNP_WLED_DEF_BOOST_DUTY_NS 104 |
| #define QPNP_WLED_DFLT_HYB_THRES 625 |
| #define QPNP_WLED_SWITCH_FREQ_MASK 0xF0 |
| #define QPNP_WLED_SWITCH_FREQ_800_KHZ 800 |
| #define QPNP_WLED_SWITCH_FREQ_1600_KHZ 1600 |
| #define QPNP_WLED_OVP_MASK 0xFC |
| #define QPNP_WLED_OVP_17800_MV 17800 |
| #define QPNP_WLED_OVP_19400_MV 19400 |
| #define QPNP_WLED_OVP_29500_MV 29500 |
| #define QPNP_WLED_OVP_31000_MV 31000 |
| |
| /* sink registers */ |
| #define QPNP_WLED_CURR_SINK_REG(b) (b + 0x46) |
| #define QPNP_WLED_SYNC_REG(b) (b + 0x47) |
| #define QPNP_WLED_MOD_REG(b) (b + 0x4A) |
| #define QPNP_WLED_HYB_THRES_REG(b) (b + 0x4B) |
| #define QPNP_WLED_MOD_EN_REG(b, n) (b + 0x50 + (n * 0x10)) |
| #define QPNP_WLED_SYNC_DLY_REG(b, n) (QPNP_WLED_MOD_EN_REG(b, n) + 0x01) |
| #define QPNP_WLED_FS_CURR_REG(b, n) (QPNP_WLED_MOD_EN_REG(b, n) + 0x02) |
| #define QPNP_WLED_CABC_REG(b, n) (QPNP_WLED_MOD_EN_REG(b, n) + 0x06) |
| #define QPNP_WLED_BRIGHT_LSB_REG(b, n) (QPNP_WLED_MOD_EN_REG(b, n) + 0x07) |
| #define QPNP_WLED_BRIGHT_MSB_REG(b, n) (QPNP_WLED_MOD_EN_REG(b, n) + 0x08) |
| |
| #define QPNP_WLED_MOD_FREQ_1200_KHZ 1200 |
| #define QPNP_WLED_MOD_FREQ_2400_KHZ 2400 |
| #define QPNP_WLED_MOD_FREQ_9600_KHZ 9600 |
| #define QPNP_WLED_MOD_FREQ_19200_KHZ 19200 |
| #define QPNP_WLED_MOD_FREQ_MASK 0x3F |
| #define QPNP_WLED_MOD_FREQ_SHIFT 6 |
| #define QPNP_WLED_PHASE_STAG_MASK 0xDF |
| #define QPNP_WLED_PHASE_STAG_SHIFT 5 |
| #define QPNP_WLED_DIM_RES_MASK 0xFD |
| #define QPNP_WLED_DIM_RES_SHIFT 1 |
| #define QPNP_WLED_DIM_HYB_MASK 0xFB |
| #define QPNP_WLED_DIM_HYB_SHIFT 2 |
| #define QPNP_WLED_DIM_ANA_MASK 0xFE |
| #define QPNP_WLED_HYB_THRES_MASK 0xF8 |
| #define QPNP_WLED_HYB_THRES_MIN 78 |
| #define QPNP_WLED_DEF_HYB_THRES 625 |
| #define QPNP_WLED_HYB_THRES_MAX 10000 |
| #define QPNP_WLED_MOD_EN_MASK 0x7F |
| #define QPNP_WLED_MOD_EN_SHFT 7 |
| #define QPNP_WLED_MOD_EN 1 |
| #define QPNP_WLED_SYNC_DLY_MASK 0xF8 |
| #define QPNP_WLED_SYNC_DLY_MIN_US 0 |
| #define QPNP_WLED_SYNC_DLY_MAX_US 1400 |
| #define QPNP_WLED_SYNC_DLY_STEP_US 200 |
| #define QPNP_WLED_DEF_SYNC_DLY_US 400 |
| #define QPNP_WLED_FS_CURR_MASK 0xF0 |
| #define QPNP_WLED_FS_CURR_MIN_UA 0 |
| #define QPNP_WLED_FS_CURR_MAX_UA 30000 |
| #define QPNP_WLED_FS_CURR_STEP_UA 2500 |
| #define QPNP_WLED_CABC_MASK 0x7F |
| #define QPNP_WLED_CABC_SHIFT 7 |
| #define QPNP_WLED_CURR_SINK_SHIFT 4 |
| #define QPNP_WLED_BRIGHT_LSB_MASK 0xFF |
| #define QPNP_WLED_BRIGHT_MSB_SHIFT 8 |
| #define QPNP_WLED_BRIGHT_MSB_MASK 0x0F |
| #define QPNP_WLED_SYNC 0x0F |
| #define QPNP_WLED_SYNC_RESET 0x00 |
| |
| #define QPNP_WLED_SWITCH_FREQ_800_KHZ_CODE 0x0B |
| #define QPNP_WLED_SWITCH_FREQ_1600_KHZ_CODE 0x05 |
| |
| #define QPNP_WLED_DISP_SEL_REG(b) (b + 0x44) |
| #define QPNP_WLED_MODULE_RDY_REG(b) (b + 0x45) |
| #define QPNP_WLED_MODULE_EN_REG(b) (b + 0x46) |
| #define QPNP_WLED_MODULE_RDY_MASK 0x7F |
| #define QPNP_WLED_MODULE_RDY_SHIFT 7 |
| #define QPNP_WLED_MODULE_EN_MASK 0x7F |
| #define QPNP_WLED_MODULE_EN_SHIFT 7 |
| #define QPNP_IBB_SWIRE_RDY_MASK 0x40 |
| #define QPNP_IBB_SWIRE_RDY_SHIFT 6 |
| #define QPNP_IBB_MODULE_EN_MASK 0x80 |
| #define QPNP_WLED_DISP_SEL_MASK 0x7F |
| #define QPNP_WLED_DISP_SEL_SHIFT 7 |
| |
| #define QPNP_WLED_IBB_BIAS_REG(b) (b + 0x58) |
| #define QPNP_WLED_IBB_BIAS_MASK 0x7F |
| #define QPNP_WLED_IBB_BIAS_SHIFT 7 |
| #define QPNP_WLED_IBB_PWRUP_DLY_MASK 0xCF |
| #define QPNP_WLED_IBB_PWRUP_DLY_SHIFT 4 |
| #define QPNP_WLED_IBB_PWRUP_DLY_MIN_MS 0 |
| #define QPNP_WLED_IBB_PWRUP_DLY_MAX_MS 3 |
| #define QPNP_WLED_IBB_PWRDN_DLY_MIN_MS 0 |
| #define QPNP_WLED_IBB_PWRDN_DLY_MAX_MS 3 |
| #define IBB_LAB_VREG_STEP_SIZE 100000 |
| #define QPNP_LABIBB_OUTPUT_VOLTAGE 0x41 |
| #define QPNP_LABIBB_PS_CTL 0x50 |
| #define QPNP_LAB_OUTPUT_OVERRIDE_EN BIT(7) |
| #define QPNP_LAB_SET_VOLTAGE_MASK (BIT(4) - 1) |
| #define QPNP_IBB_SET_VOLTAGE_MASK (BIT(6) - 1) |
| #define QPNP_WLED_LAB_IBB_RDY_REG(b) (b + 0x49) |
| #define QPNP_WLED_LAB_FAST_PC_REG(b) (b + 0x5E) |
| #define QPNP_WLED_LAB_FAST_PC_MASK 0xFB |
| #define QPNP_WLED_LAB_START_DLY_US 8 |
| #define QPNP_WLED_LAB_FAST_PC_SHIFT 2 |
| #define QPNP_WLED_PRECHARGE_MASK 0xFC |
| #define QPNP_WLED_PRECHARGE_US200 0x00 |
| #define QPNP_WLED_PRECHARGE_US300 0x01 |
| #define QPNP_WLED_PRECHARGE_US400 0x02 |
| #define QPNP_WLED_PRECHARGE_US500 0x03 |
| |
| #define QPNP_WLED_SEC_ACCESS_REG(b) (b + 0xD0) |
| #define QPNP_WLED_SEC_UNLOCK 0xA5 |
| |
| #if TARGET_MAX_WLED_STRINGS |
| #define QPNP_WLED_MAX_STRINGS TARGET_MAX_WLED_STRINGS |
| #else |
| #define QPNP_WLED_MAX_STRINGS 4 |
| #endif |
| #define WLED_MAX_LEVEL_511 511 |
| #define WLED_MAX_LEVEL_4095 4095 |
| #define QPNP_WLED_RAMP_DLY_MS 20 |
| #define QPNP_WLED_TRIGGER_NONE "none" |
| #define QPNP_WLED_STR_SIZE 20 |
| #define QPNP_WLED_MIN_MSLEEP 20 |
| #define QPNP_WLED_MAX_BR_LEVEL 1638 |
| |
| #define PWRDN_DLY2_MASK 0x3 |
| |
| #define NUM_SUPPORTED_AVDD_VOLTAGES 6 |
| |
| /* Supported values 7900, 7600, 7300, 6400, 6100, 5800 */ |
| #if TARGET_QPNP_WLED_AVDD_DEFAULT_VOLTAGE_MV |
| #define QPNP_WLED_AVDD_DEFAULT_VOLTAGE_MV TARGET_QPNP_WLED_AVDD_DEFAULT_VOLTAGE_MV |
| #else |
| #define QPNP_WLED_AVDD_DEFAULT_VOLTAGE_MV 7600 |
| #endif |
| |
| #define QPNP_WLED_AVDD_MIN_TRIM_VALUE 0x0 |
| #define QPNP_WLED_AVDD_MAX_TRIM_VALUE 0xF |
| #define QPNP_WLED_AVDD_SET_BIT BIT(4) |
| |
| /* output feedback mode */ |
| enum qpnp_wled_fdbk_op { |
| QPNP_WLED_FDBK_AUTO, |
| QPNP_WLED_FDBK_WLED1, |
| QPNP_WLED_FDBK_WLED2, |
| QPNP_WLED_FDBK_WLED3, |
| QPNP_WLED_FDBK_WLED4, |
| }; |
| |
| /* dimming modes */ |
| enum qpnp_wled_dim_mode { |
| QPNP_WLED_DIM_ANALOG, |
| QPNP_WLED_DIM_DIGITAL, |
| QPNP_WLED_DIM_HYBRID, |
| }; |
| |
| /* dimming curve shapes */ |
| enum qpnp_wled_dim_shape { |
| QPNP_WLED_DIM_SHAPE_LOG, |
| QPNP_WLED_DIM_SHAPE_LINEAR, |
| QPNP_WLED_DIM_SHAPE_SQUARE, |
| }; |
| |
| |
| /** |
| * qpnp_wled - wed data structure |
| * @ fdbk_op - output feedback mode |
| * @ dim_mode - dimming mode |
| * @ dim_shape - dimming curve shape |
| * @ ctrl_base - base address for wled ctrl |
| * @ sink_base - base address for wled sink |
| * @ ibb_base - base address for IBB(Inverting Buck Boost) |
| * @ lab_base - base address for LAB(LCD/AMOLED Boost) |
| * @ mod_freq_khz - modulator frequency in KHZ |
| * @ hyb_thres - threshold for hybrid dimming |
| * @ sync_dly_us - sync delay in us |
| * @ vref_mv - ref voltage in mv |
| * @ switch_freq_khz - switching frequency in KHZ |
| * @ ovp_mv - over voltage protection in mv |
| * @ ilim_ma - current limiter in ma |
| * @ boost_duty_ns - boost duty cycle in ns |
| * @ fs_curr_ua - full scale current in ua |
| * @ ramp_ms - delay between ramp steps in ms |
| * @ ramp_step - ramp step size |
| * @ strings - supported list of strings |
| * @ num_strings - number of strings |
| * @ en_9b_dim_res - enable or disable 9bit dimming |
| * @ en_phase_stag - enable or disable phase staggering |
| * @ en_cabc - enable or disable cabc |
| * @ disp_type_amoled - type of display: LCD/AMOLED |
| * @ ibb_bias_active - activate display bias |
| * @ lab_fast_precharge - fast/slow precharge |
| */ |
| struct qpnp_wled { |
| enum qpnp_wled_fdbk_op fdbk_op; |
| enum qpnp_wled_dim_mode dim_mode; |
| enum qpnp_wled_dim_shape dim_shape; |
| uint16_t ctrl_base; |
| uint16_t sink_base; |
| uint16_t ibb_base; |
| uint16_t lab_base; |
| uint16_t mod_freq_khz; |
| uint16_t hyb_thres; |
| uint16_t sync_dly_us; |
| uint16_t vref_mv; |
| uint16_t switch_freq_khz; |
| uint16_t ovp_mv; |
| uint16_t ilim_ma; |
| uint16_t boost_duty_ns; |
| uint16_t fs_curr_ua; |
| uint16_t ibb_pwrup_dly_ms; |
| uint16_t ibb_pwrdn_dly_ms; |
| uint16_t ibb_discharge_en; |
| uint16_t ramp_ms; |
| uint16_t ramp_step; |
| uint8_t strings[QPNP_WLED_MAX_STRINGS]; |
| uint8_t num_strings; |
| bool en_9b_dim_res; |
| bool en_phase_stag; |
| bool en_cabc; |
| bool disp_type_amoled; |
| bool ibb_bias_active; |
| bool lab_fast_precharge; |
| uint8_t lab_max_precharge_time; |
| uint32_t lab_min_volt; |
| uint32_t lab_max_volt; |
| uint32_t ibb_min_volt; |
| uint32_t ibb_max_volt; |
| uint32_t ibb_init_volt; |
| uint32_t lab_init_volt; |
| bool lab_ibb_swire_control; |
| bool wled_avdd_control; |
| }; |
| |
| struct qpnp_wled_config_data { |
| bool display_type; |
| char pwr_up_delay; |
| char pwr_down_delay; |
| char ibb_discharge_en; |
| uint32_t lab_min_volt; |
| uint32_t lab_max_volt; |
| uint32_t ibb_min_volt; |
| uint32_t ibb_max_volt; |
| uint32_t ibb_init_volt; |
| uint32_t lab_init_volt; |
| bool lab_ibb_swire_control; |
| bool wled_avdd_control; |
| }; |
| /* WLED Initial Setup */ |
| int qpnp_wled_init(struct qpnp_wled_config_data *config); |
| |
| /* Enable IBB */ |
| int qpnp_ibb_enable(bool state); |
| void qpnp_wled_enable_backlight(int enable); |