| |
| /* Copyright (c) 2012-2013, The Linux Foundation. All rights reserved. |
| * |
| * This program is free software; you can redistribute it and/or modify |
| * it under the terms of the GNU General Public License version 2 and |
| * only version 2 as published by the Free Software Foundation. |
| * |
| * This program is distributed in the hope that it will be useful, |
| * but WITHOUT ANY WARRANTY; without even the implied warranty of |
| * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
| * GNU General Public License for more details. |
| */ |
| |
| #include <linux/kernel.h> |
| #include <linux/module.h> |
| #include <linux/init.h> |
| #include <linux/slab.h> |
| #include <linux/leds.h> |
| #include <linux/err.h> |
| #include <linux/spinlock.h> |
| #include <linux/of_platform.h> |
| #include <linux/of_device.h> |
| #include <linux/spmi.h> |
| #include <linux/qpnp/pwm.h> |
| #include <linux/workqueue.h> |
| |
| #define WLED_MOD_EN_REG(base, n) (base + 0x60 + n*0x10) |
| #define WLED_IDAC_DLY_REG(base, n) (WLED_MOD_EN_REG(base, n) + 0x01) |
| #define WLED_FULL_SCALE_REG(base, n) (WLED_IDAC_DLY_REG(base, n) + 0x01) |
| #define WLED_MOD_SRC_SEL_REG(base, n) (WLED_FULL_SCALE_REG(base, n) + 0x01) |
| |
| /* wled control registers */ |
| #define WLED_BRIGHTNESS_CNTL_LSB(base, n) (base + 0x40 + 2*n) |
| #define WLED_BRIGHTNESS_CNTL_MSB(base, n) (base + 0x41 + 2*n) |
| #define WLED_MOD_CTRL_REG(base) (base + 0x46) |
| #define WLED_SYNC_REG(base) (base + 0x47) |
| #define WLED_FDBCK_CTRL_REG(base) (base + 0x48) |
| #define WLED_SWITCHING_FREQ_REG(base) (base + 0x4C) |
| #define WLED_OVP_CFG_REG(base) (base + 0x4D) |
| #define WLED_BOOST_LIMIT_REG(base) (base + 0x4E) |
| #define WLED_CURR_SINK_REG(base) (base + 0x4F) |
| #define WLED_HIGH_POLE_CAP_REG(base) (base + 0x58) |
| #define WLED_CURR_SINK_MASK 0xE0 |
| #define WLED_CURR_SINK_SHFT 0x05 |
| #define WLED_SWITCH_FREQ_MASK 0x02 |
| #define WLED_OVP_VAL_MASK 0x03 |
| #define WLED_OVP_VAL_BIT_SHFT 0x00 |
| #define WLED_BOOST_LIMIT_MASK 0x07 |
| #define WLED_BOOST_LIMIT_BIT_SHFT 0x00 |
| #define WLED_BOOST_ON 0x80 |
| #define WLED_BOOST_OFF 0x00 |
| #define WLED_EN_MASK 0x80 |
| #define WLED_NO_MASK 0x00 |
| #define WLED_CP_SELECT_MAX 0x03 |
| #define WLED_CP_SELECT_MASK 0x02 |
| #define WLED_USE_EXT_GEN_MOD_SRC 0x01 |
| #define WLED_CTL_DLY_STEP 200 |
| #define WLED_CTL_DLY_MAX 1400 |
| #define WLED_MAX_CURR 25 |
| #define WLED_MSB_MASK 0x0F |
| #define WLED_MAX_CURR_MASK 0x19 |
| #define WLED_OP_FDBCK_MASK 0x07 |
| #define WLED_OP_FDBCK_BIT_SHFT 0x00 |
| |
| #define WLED_MAX_LEVEL 255 |
| #define WLED_8_BIT_MASK 0xFF |
| #define WLED_4_BIT_MASK 0x0F |
| #define WLED_8_BIT_SHFT 0x08 |
| #define WLED_MAX_DUTY_CYCLE 0xFFF |
| |
| #define WLED_SYNC_VAL 0x07 |
| #define WLED_SYNC_RESET_VAL 0x00 |
| |
| #define WLED_DEFAULT_STRINGS 0x01 |
| #define WLED_DEFAULT_OVP_VAL 0x02 |
| #define WLED_BOOST_LIM_DEFAULT 0x03 |
| #define WLED_CP_SEL_DEFAULT 0x00 |
| #define WLED_CTRL_DLY_DEFAULT 0x00 |
| #define WLED_SWITCH_FREQ_DEFAULT 0x02 |
| |
| #define FLASH_SAFETY_TIMER(base) (base + 0x40) |
| #define FLASH_MAX_CURR(base) (base + 0x41) |
| #define FLASH_LED_0_CURR(base) (base + 0x42) |
| #define FLASH_LED_1_CURR(base) (base + 0x43) |
| #define FLASH_CLAMP_CURR(base) (base + 0x44) |
| #define FLASH_LED_TMR_CTRL(base) (base + 0x48) |
| #define FLASH_HEADROOM(base) (base + 0x4A) |
| #define FLASH_STARTUP_DELAY(base) (base + 0x4B) |
| #define FLASH_MASK_ENABLE(base) (base + 0x4C) |
| #define FLASH_VREG_OK_FORCE(base) (base + 0x4F) |
| #define FLASH_ENABLE_CONTROL(base) (base + 0x46) |
| #define FLASH_LED_STROBE_CTRL(base) (base + 0x47) |
| |
| #define FLASH_MAX_LEVEL 0x4F |
| #define FLASH_NO_MASK 0x00 |
| |
| #define FLASH_MASK_1 0x20 |
| #define FLASH_MASK_REG_MASK 0xE0 |
| #define FLASH_HEADROOM_MASK 0x03 |
| #define FLASH_SAFETY_TIMER_MASK 0x7F |
| #define FLASH_CURRENT_MASK 0xFF |
| #define FLASH_TMR_MASK 0x03 |
| #define FLASH_TMR_WATCHDOG 0x03 |
| #define FLASH_TMR_SAFETY 0x00 |
| |
| #define FLASH_HW_VREG_OK 0x80 |
| #define FLASH_VREG_MASK 0xC0 |
| |
| #define FLASH_STARTUP_DLY_MASK 0x02 |
| |
| #define FLASH_ENABLE_ALL 0xE0 |
| #define FLASH_ENABLE_MODULE 0x80 |
| #define FLASH_ENABLE_MODULE_MASK 0x80 |
| #define FLASH_DISABLE_ALL 0x00 |
| #define FLASH_ENABLE_MASK 0xE0 |
| #define FLASH_ENABLE_LED_0 0x40 |
| #define FLASH_ENABLE_LED_1 0x20 |
| #define FLASH_INIT_MASK 0xE0 |
| |
| #define FLASH_STROBE_ALL 0xC0 |
| #define FLASH_STROBE_MASK 0xC0 |
| #define FLASH_LED_0_OUTPUT 0x80 |
| #define FLASH_LED_1_OUTPUT 0x40 |
| |
| #define FLASH_CURRENT_PRGM_MIN 1 |
| #define FLASH_CURRENT_PRGM_SHIFT 1 |
| |
| #define FLASH_DURATION_200ms 0x13 |
| #define FLASH_CLAMP_200mA 0x0F |
| |
| #define LED_TRIGGER_DEFAULT "none" |
| |
| #define RGB_LED_SRC_SEL(base) (base + 0x45) |
| #define RGB_LED_EN_CTL(base) (base + 0x46) |
| #define RGB_LED_ATC_CTL(base) (base + 0x47) |
| |
| #define RGB_MAX_LEVEL LED_FULL |
| #define RGB_LED_ENABLE_RED 0x80 |
| #define RGB_LED_ENABLE_GREEN 0x40 |
| #define RGB_LED_ENABLE_BLUE 0x20 |
| #define RGB_LED_SOURCE_VPH_PWR 0x01 |
| #define RGB_LED_ENABLE_MASK 0xE0 |
| #define RGB_LED_SRC_MASK 0x03 |
| #define QPNP_LED_PWM_FLAGS (PM_PWM_LUT_LOOP | PM_PWM_LUT_RAMP_UP) |
| #define PWM_LUT_MAX_SIZE 63 |
| #define RGB_LED_DISABLE 0x00 |
| |
| /** |
| * enum qpnp_leds - QPNP supported led ids |
| * @QPNP_ID_WLED - White led backlight |
| */ |
| enum qpnp_leds { |
| QPNP_ID_WLED = 0, |
| QPNP_ID_FLASH1_LED0, |
| QPNP_ID_FLASH1_LED1, |
| QPNP_ID_RGB_RED, |
| QPNP_ID_RGB_GREEN, |
| QPNP_ID_RGB_BLUE, |
| QPNP_ID_MAX, |
| }; |
| |
| /* current boost limit */ |
| enum wled_current_boost_limit { |
| WLED_CURR_LIMIT_105mA, |
| WLED_CURR_LIMIT_385mA, |
| WLED_CURR_LIMIT_525mA, |
| WLED_CURR_LIMIT_805mA, |
| WLED_CURR_LIMIT_980mA, |
| WLED_CURR_LIMIT_1260mA, |
| WLED_CURR_LIMIT_1400mA, |
| WLED_CURR_LIMIT_1680mA, |
| }; |
| |
| /* over voltage protection threshold */ |
| enum wled_ovp_threshold { |
| WLED_OVP_35V, |
| WLED_OVP_32V, |
| WLED_OVP_29V, |
| WLED_OVP_37V, |
| }; |
| |
| /* switch frquency */ |
| enum wled_switch_freq { |
| WLED_800kHz = 0, |
| WLED_960kHz, |
| WLED_1600kHz, |
| WLED_3200kHz, |
| }; |
| |
| enum flash_headroom { |
| HEADROOM_250mV = 0, |
| HEADROOM_300mV, |
| HEADROOM_400mV, |
| HEADROOM_500mV, |
| }; |
| |
| enum flash_startup_dly { |
| DELAY_10us = 0, |
| DELAY_32us, |
| DELAY_64us, |
| DELAY_128us, |
| }; |
| |
| enum rgb_mode { |
| RGB_MODE_PWM = 0, |
| RGB_MODE_LPG, |
| }; |
| |
| static u8 wled_debug_regs[] = { |
| /* common registers */ |
| 0x46, 0x47, 0x48, 0x49, 0x4a, 0x4b, 0x4c, 0x4d, 0x4d, 0x4e, 0x4f, |
| 0x50, 0x51, 0x52, 0x53, 0x54, 0x55, 0x56, 0x57, 0x58, 0x59, |
| /* LED1 */ |
| 0x60, 0x61, 0x62, 0x63, 0x66, |
| /* LED2 */ |
| 0x70, 0x71, 0x72, 0x73, 0x76, |
| /* LED3 */ |
| 0x80, 0x81, 0x82, 0x83, 0x86, |
| }; |
| |
| static u8 flash_debug_regs[] = { |
| 0x40, 0x41, 0x42, 0x43, 0x44, 0x48, 0x49, 0x4b, 0x4c, |
| 0x4f, 0x46, 0x47, |
| }; |
| |
| static u8 rgb_pwm_debug_regs[] = { |
| 0x45, 0x46, 0x47, |
| }; |
| /** |
| * wled_config_data - wled configuration data |
| * @num_strings - number of wled strings supported |
| * @ovp_val - over voltage protection threshold |
| * @boost_curr_lim - boot current limit |
| * @cp_select - high pole capacitance |
| * @ctrl_delay_us - delay in activation of led |
| * @dig_mod_gen_en - digital module generator |
| * @cs_out_en - current sink output enable |
| * @op_fdbck - selection of output as feedback for the boost |
| */ |
| struct wled_config_data { |
| u8 num_strings; |
| u8 ovp_val; |
| u8 boost_curr_lim; |
| u8 cp_select; |
| u8 ctrl_delay_us; |
| u8 switch_freq; |
| bool dig_mod_gen_en; |
| bool cs_out_en; |
| bool op_fdbck; |
| }; |
| |
| /** |
| * flash_config_data - flash configuration data |
| * @current_prgm - current to be programmed, scaled by max level |
| * @clamp_curr - clamp current to use |
| * @headroom - headroom value to use |
| * @duration - duration of the flash |
| * @enable_module - enable address for particular flash |
| * @trigger_flash - trigger flash |
| * @startup_dly - startup delay for flash |
| * @current_addr - address to write for current |
| * @second_addr - address of secondary flash to be written |
| * @safety_timer - enable safety timer or watchdog timer |
| */ |
| struct flash_config_data { |
| u8 current_prgm; |
| u8 clamp_curr; |
| u8 headroom; |
| u8 duration; |
| u8 enable_module; |
| u8 trigger_flash; |
| u8 startup_dly; |
| u16 current_addr; |
| u16 second_addr; |
| bool safety_timer; |
| }; |
| |
| /** |
| * rgb_config_data - rgb configuration data |
| * @lut_params - lut parameters to be used by pwm driver |
| * @pwm_device - pwm device |
| * @pwm_channel - pwm channel to be configured for led |
| * @pwm_period_us - period for pwm, in us |
| * @mode - mode the led operates in |
| */ |
| struct rgb_config_data { |
| struct lut_params lut_params; |
| struct pwm_device *pwm_dev; |
| int pwm_channel; |
| u32 pwm_period_us; |
| struct pwm_duty_cycles *duty_cycles; |
| u8 mode; |
| u8 enable; |
| }; |
| |
| /** |
| * struct qpnp_led_data - internal led data structure |
| * @led_classdev - led class device |
| * @delayed_work - delayed work for turning off the LED |
| * @id - led index |
| * @base_reg - base register given in device tree |
| * @lock - to protect the transactions |
| * @reg - cached value of led register |
| * @num_leds - number of leds in the module |
| * @max_current - maximum current supported by LED |
| * @default_on - true: default state max, false, default state 0 |
| * @turn_off_delay_ms - number of msec before turning off the LED |
| */ |
| struct qpnp_led_data { |
| struct led_classdev cdev; |
| struct spmi_device *spmi_dev; |
| struct delayed_work dwork; |
| int id; |
| u16 base; |
| u8 reg; |
| u8 num_leds; |
| spinlock_t lock; |
| struct wled_config_data *wled_cfg; |
| struct flash_config_data *flash_cfg; |
| struct rgb_config_data *rgb_cfg; |
| int max_current; |
| bool default_on; |
| int turn_off_delay_ms; |
| }; |
| |
| static int |
| qpnp_led_masked_write(struct qpnp_led_data *led, u16 addr, u8 mask, u8 val) |
| { |
| int rc; |
| u8 reg; |
| |
| rc = spmi_ext_register_readl(led->spmi_dev->ctrl, led->spmi_dev->sid, |
| addr, ®, 1); |
| if (rc) { |
| dev_err(&led->spmi_dev->dev, |
| "Unable to read from addr=%x, rc(%d)\n", addr, rc); |
| } |
| |
| reg &= ~mask; |
| reg |= val; |
| |
| rc = spmi_ext_register_writel(led->spmi_dev->ctrl, led->spmi_dev->sid, |
| addr, ®, 1); |
| if (rc) |
| dev_err(&led->spmi_dev->dev, |
| "Unable to write to addr=%x, rc(%d)\n", addr, rc); |
| return rc; |
| } |
| |
| static void qpnp_dump_regs(struct qpnp_led_data *led, u8 regs[], u8 array_size) |
| { |
| int i; |
| u8 val; |
| |
| pr_debug("===== %s LED register dump start =====\n", led->cdev.name); |
| for (i = 0; i < array_size; i++) { |
| spmi_ext_register_readl(led->spmi_dev->ctrl, |
| led->spmi_dev->sid, |
| led->base + regs[i], |
| &val, sizeof(val)); |
| pr_debug("0x%x = 0x%x\n", led->base + regs[i], val); |
| } |
| pr_debug("===== %s LED register dump end =====\n", led->cdev.name); |
| } |
| |
| static int qpnp_wled_set(struct qpnp_led_data *led) |
| { |
| int rc, duty; |
| u8 level, val, i, num_wled_strings; |
| |
| level = led->cdev.brightness; |
| |
| if (level > WLED_MAX_LEVEL) |
| level = WLED_MAX_LEVEL; |
| if (level == 0) { |
| val = WLED_BOOST_OFF; |
| rc = spmi_ext_register_writel(led->spmi_dev->ctrl, |
| led->spmi_dev->sid, WLED_MOD_CTRL_REG(led->base), |
| &val, 1); |
| if (rc) { |
| dev_err(&led->spmi_dev->dev, |
| "WLED write ctrl reg failed(%d)\n", rc); |
| return rc; |
| } |
| } else { |
| val = WLED_BOOST_ON; |
| rc = spmi_ext_register_writel(led->spmi_dev->ctrl, |
| led->spmi_dev->sid, WLED_MOD_CTRL_REG(led->base), |
| &val, 1); |
| if (rc) { |
| dev_err(&led->spmi_dev->dev, |
| "WLED write ctrl reg failed(%d)\n", rc); |
| return rc; |
| } |
| } |
| |
| duty = (WLED_MAX_DUTY_CYCLE * level) / WLED_MAX_LEVEL; |
| |
| num_wled_strings = led->wled_cfg->num_strings; |
| |
| /* program brightness control registers */ |
| for (i = 0; i < num_wled_strings; i++) { |
| rc = qpnp_led_masked_write(led, |
| WLED_BRIGHTNESS_CNTL_MSB(led->base, i), WLED_MSB_MASK, |
| (duty >> WLED_8_BIT_SHFT) & WLED_4_BIT_MASK); |
| if (rc) { |
| dev_err(&led->spmi_dev->dev, |
| "WLED set brightness MSB failed(%d)\n", rc); |
| return rc; |
| } |
| val = duty & WLED_8_BIT_MASK; |
| rc = spmi_ext_register_writel(led->spmi_dev->ctrl, |
| led->spmi_dev->sid, |
| WLED_BRIGHTNESS_CNTL_LSB(led->base, i), &val, 1); |
| if (rc) { |
| dev_err(&led->spmi_dev->dev, |
| "WLED set brightness LSB failed(%d)\n", rc); |
| return rc; |
| } |
| } |
| |
| /* sync */ |
| val = WLED_SYNC_VAL; |
| rc = spmi_ext_register_writel(led->spmi_dev->ctrl, led->spmi_dev->sid, |
| WLED_SYNC_REG(led->base), &val, 1); |
| if (rc) { |
| dev_err(&led->spmi_dev->dev, |
| "WLED set sync reg failed(%d)\n", rc); |
| return rc; |
| } |
| |
| val = WLED_SYNC_RESET_VAL; |
| rc = spmi_ext_register_writel(led->spmi_dev->ctrl, led->spmi_dev->sid, |
| WLED_SYNC_REG(led->base), &val, 1); |
| if (rc) { |
| dev_err(&led->spmi_dev->dev, |
| "WLED reset sync reg failed(%d)\n", rc); |
| return rc; |
| } |
| return 0; |
| } |
| |
| static int qpnp_flash_set(struct qpnp_led_data *led) |
| { |
| int rc; |
| int val = led->cdev.brightness; |
| |
| led->flash_cfg->current_prgm = (val * FLASH_MAX_LEVEL / |
| led->max_current); |
| |
| led->flash_cfg->current_prgm = |
| led->flash_cfg->current_prgm >> FLASH_CURRENT_PRGM_SHIFT; |
| if (!led->flash_cfg->current_prgm) |
| led->flash_cfg->current_prgm = FLASH_CURRENT_PRGM_MIN; |
| |
| /* Set led current */ |
| if (val > 0) { |
| rc = qpnp_led_masked_write(led, FLASH_ENABLE_CONTROL(led->base), |
| FLASH_ENABLE_MODULE_MASK, FLASH_ENABLE_MODULE); |
| if (rc) { |
| dev_err(&led->spmi_dev->dev, |
| "Enable reg write failed(%d)\n", rc); |
| return rc; |
| } |
| |
| rc = qpnp_led_masked_write(led, led->flash_cfg->current_addr, |
| FLASH_CURRENT_MASK, led->flash_cfg->current_prgm); |
| if (rc) { |
| dev_err(&led->spmi_dev->dev, |
| "Current reg write failed(%d)\n", rc); |
| return rc; |
| } |
| |
| rc = qpnp_led_masked_write(led, led->flash_cfg->second_addr, |
| FLASH_CURRENT_MASK, led->flash_cfg->current_prgm); |
| if (rc) { |
| dev_err(&led->spmi_dev->dev, |
| "Current reg write failed(%d)\n", rc); |
| return rc; |
| } |
| |
| rc = qpnp_led_masked_write(led, FLASH_ENABLE_CONTROL(led->base), |
| FLASH_ENABLE_MASK, |
| FLASH_ENABLE_ALL); |
| if (rc) { |
| dev_err(&led->spmi_dev->dev, |
| "Enable reg write failed(%d)\n", rc); |
| return rc; |
| } |
| rc = qpnp_led_masked_write(led, |
| FLASH_LED_STROBE_CTRL(led->base), |
| FLASH_STROBE_MASK, FLASH_STROBE_ALL); |
| |
| if (rc) { |
| dev_err(&led->spmi_dev->dev, |
| "LED %d flash write failed(%d)\n", led->id, rc); |
| return rc; |
| } |
| rc = qpnp_led_masked_write(led, FLASH_VREG_OK_FORCE(led->base), |
| FLASH_VREG_MASK, FLASH_HW_VREG_OK); |
| if (rc) { |
| dev_err(&led->spmi_dev->dev, |
| "Vreg OK reg write failed(%d)\n", rc); |
| return rc; |
| } |
| } else { |
| rc = qpnp_led_masked_write(led, FLASH_ENABLE_CONTROL(led->base), |
| FLASH_ENABLE_MASK, |
| FLASH_DISABLE_ALL); |
| if (rc) { |
| dev_err(&led->spmi_dev->dev, |
| "Enable reg write failed(%d)\n", rc); |
| return rc; |
| } |
| |
| rc = qpnp_led_masked_write(led, |
| FLASH_LED_STROBE_CTRL(led->base), |
| FLASH_STROBE_MASK, |
| FLASH_DISABLE_ALL); |
| if (rc) { |
| dev_err(&led->spmi_dev->dev, |
| "LED %d flash write failed(%d)\n", led->id, rc); |
| return rc; |
| } |
| } |
| |
| qpnp_dump_regs(led, flash_debug_regs, ARRAY_SIZE(flash_debug_regs)); |
| |
| return 0; |
| } |
| |
| static int qpnp_rgb_set(struct qpnp_led_data *led) |
| { |
| int duty_us; |
| int rc; |
| |
| if (led->cdev.brightness) { |
| if (led->rgb_cfg->mode == RGB_MODE_PWM) { |
| duty_us = (led->rgb_cfg->pwm_period_us * |
| led->cdev.brightness) / LED_FULL; |
| rc = pwm_config(led->rgb_cfg->pwm_dev, duty_us, |
| led->rgb_cfg->pwm_period_us); |
| if (rc < 0) { |
| dev_err(&led->spmi_dev->dev, "Failed to " \ |
| "configure pwm for new values\n"); |
| return rc; |
| } |
| } |
| rc = qpnp_led_masked_write(led, |
| RGB_LED_EN_CTL(led->base), |
| led->rgb_cfg->enable, led->rgb_cfg->enable); |
| if (rc) { |
| dev_err(&led->spmi_dev->dev, |
| "Failed to write led enable reg\n"); |
| return rc; |
| } |
| rc = pwm_enable(led->rgb_cfg->pwm_dev); |
| } else { |
| pwm_disable(led->rgb_cfg->pwm_dev); |
| rc = qpnp_led_masked_write(led, |
| RGB_LED_EN_CTL(led->base), |
| led->rgb_cfg->enable, RGB_LED_DISABLE); |
| if (rc) { |
| dev_err(&led->spmi_dev->dev, |
| "Failed to write led enable reg\n"); |
| return rc; |
| } |
| } |
| |
| qpnp_dump_regs(led, rgb_pwm_debug_regs, ARRAY_SIZE(rgb_pwm_debug_regs)); |
| |
| return 0; |
| } |
| |
| static void qpnp_led_set(struct led_classdev *led_cdev, |
| enum led_brightness value) |
| { |
| int rc; |
| struct qpnp_led_data *led; |
| |
| led = container_of(led_cdev, struct qpnp_led_data, cdev); |
| if (value < LED_OFF || value > led->cdev.max_brightness) { |
| dev_err(&led->spmi_dev->dev, "Invalid brightness value\n"); |
| return; |
| } |
| |
| spin_lock(&led->lock); |
| led->cdev.brightness = value; |
| |
| switch (led->id) { |
| case QPNP_ID_WLED: |
| rc = qpnp_wled_set(led); |
| if (rc < 0) |
| dev_err(&led->spmi_dev->dev, |
| "WLED set brightness failed (%d)\n", rc); |
| break; |
| case QPNP_ID_FLASH1_LED0: |
| case QPNP_ID_FLASH1_LED1: |
| rc = qpnp_flash_set(led); |
| if (rc < 0) |
| dev_err(&led->spmi_dev->dev, |
| "FLASH set brightness failed (%d)\n", rc); |
| break; |
| case QPNP_ID_RGB_RED: |
| case QPNP_ID_RGB_GREEN: |
| case QPNP_ID_RGB_BLUE: |
| rc = qpnp_rgb_set(led); |
| if (rc < 0) |
| dev_err(&led->spmi_dev->dev, |
| "RGB set brightness failed (%d)\n", rc); |
| break; |
| default: |
| dev_err(&led->spmi_dev->dev, "Invalid LED(%d)\n", led->id); |
| break; |
| } |
| spin_unlock(&led->lock); |
| } |
| |
| static int __devinit qpnp_led_set_max_brightness(struct qpnp_led_data *led) |
| { |
| switch (led->id) { |
| case QPNP_ID_WLED: |
| led->cdev.max_brightness = WLED_MAX_LEVEL; |
| break; |
| case QPNP_ID_FLASH1_LED0: |
| case QPNP_ID_FLASH1_LED1: |
| led->cdev.max_brightness = led->max_current; |
| break; |
| case QPNP_ID_RGB_RED: |
| case QPNP_ID_RGB_GREEN: |
| case QPNP_ID_RGB_BLUE: |
| led->cdev.max_brightness = RGB_MAX_LEVEL; |
| break; |
| default: |
| dev_err(&led->spmi_dev->dev, "Invalid LED(%d)\n", led->id); |
| return -EINVAL; |
| } |
| |
| return 0; |
| } |
| |
| static enum led_brightness qpnp_led_get(struct led_classdev *led_cdev) |
| { |
| struct qpnp_led_data *led; |
| |
| led = container_of(led_cdev, struct qpnp_led_data, cdev); |
| |
| return led->cdev.brightness; |
| } |
| |
| static void qpnp_led_turn_off_delayed(struct work_struct *work) |
| { |
| struct delayed_work *dwork = to_delayed_work(work); |
| struct qpnp_led_data *led |
| = container_of(dwork, struct qpnp_led_data, dwork); |
| |
| led->cdev.brightness = LED_OFF; |
| qpnp_led_set(&led->cdev, led->cdev.brightness); |
| } |
| |
| static void qpnp_led_turn_off(struct qpnp_led_data *led) |
| { |
| INIT_DELAYED_WORK(&led->dwork, qpnp_led_turn_off_delayed); |
| schedule_delayed_work(&led->dwork, |
| msecs_to_jiffies(led->turn_off_delay_ms)); |
| } |
| |
| static int __devinit qpnp_wled_init(struct qpnp_led_data *led) |
| { |
| int rc, i; |
| u8 num_wled_strings; |
| |
| num_wled_strings = led->wled_cfg->num_strings; |
| |
| /* verify ranges */ |
| if (led->wled_cfg->ovp_val > WLED_OVP_37V) { |
| dev_err(&led->spmi_dev->dev, "Invalid ovp value\n"); |
| return -EINVAL; |
| } |
| |
| if (led->wled_cfg->boost_curr_lim > WLED_CURR_LIMIT_1680mA) { |
| dev_err(&led->spmi_dev->dev, "Invalid boost current limit\n"); |
| return -EINVAL; |
| } |
| |
| if (led->wled_cfg->cp_select > WLED_CP_SELECT_MAX) { |
| dev_err(&led->spmi_dev->dev, "Invalid pole capacitance\n"); |
| return -EINVAL; |
| } |
| |
| if ((led->max_current > WLED_MAX_CURR)) { |
| dev_err(&led->spmi_dev->dev, "Invalid max current\n"); |
| return -EINVAL; |
| } |
| |
| if ((led->wled_cfg->ctrl_delay_us % WLED_CTL_DLY_STEP) || |
| (led->wled_cfg->ctrl_delay_us > WLED_CTL_DLY_MAX)) { |
| dev_err(&led->spmi_dev->dev, "Invalid control delay\n"); |
| return -EINVAL; |
| } |
| |
| /* program over voltage protection threshold */ |
| rc = qpnp_led_masked_write(led, WLED_OVP_CFG_REG(led->base), |
| WLED_OVP_VAL_MASK, |
| (led->wled_cfg->ovp_val << WLED_OVP_VAL_BIT_SHFT)); |
| if (rc) { |
| dev_err(&led->spmi_dev->dev, |
| "WLED OVP reg write failed(%d)\n", rc); |
| return rc; |
| } |
| |
| /* program current boost limit */ |
| rc = qpnp_led_masked_write(led, WLED_BOOST_LIMIT_REG(led->base), |
| WLED_BOOST_LIMIT_MASK, led->wled_cfg->boost_curr_lim); |
| if (rc) { |
| dev_err(&led->spmi_dev->dev, |
| "WLED boost limit reg write failed(%d)\n", rc); |
| return rc; |
| } |
| |
| /* program output feedback */ |
| rc = qpnp_led_masked_write(led, WLED_FDBCK_CTRL_REG(led->base), |
| WLED_OP_FDBCK_MASK, |
| (led->wled_cfg->op_fdbck << WLED_OP_FDBCK_BIT_SHFT)); |
| if (rc) { |
| dev_err(&led->spmi_dev->dev, |
| "WLED fdbck ctrl reg write failed(%d)\n", rc); |
| return rc; |
| } |
| |
| /* program switch frequency */ |
| rc = qpnp_led_masked_write(led, WLED_SWITCHING_FREQ_REG(led->base), |
| WLED_SWITCH_FREQ_MASK, led->wled_cfg->switch_freq); |
| if (rc) { |
| dev_err(&led->spmi_dev->dev, |
| "WLED switch freq reg write failed(%d)\n", rc); |
| return rc; |
| } |
| |
| /* program current sink */ |
| if (led->wled_cfg->cs_out_en) { |
| rc = qpnp_led_masked_write(led, WLED_CURR_SINK_REG(led->base), |
| WLED_CURR_SINK_MASK, |
| (((1 << led->wled_cfg->num_strings) - 1) |
| << WLED_CURR_SINK_SHFT)); |
| if (rc) { |
| dev_err(&led->spmi_dev->dev, |
| "WLED curr sink reg write failed(%d)\n", rc); |
| return rc; |
| } |
| } |
| |
| /* program high pole capacitance */ |
| rc = qpnp_led_masked_write(led, WLED_HIGH_POLE_CAP_REG(led->base), |
| WLED_CP_SELECT_MASK, led->wled_cfg->cp_select); |
| if (rc) { |
| dev_err(&led->spmi_dev->dev, |
| "WLED pole cap reg write failed(%d)\n", rc); |
| return rc; |
| } |
| |
| /* program modulator, current mod src and cabc */ |
| for (i = 0; i < num_wled_strings; i++) { |
| rc = qpnp_led_masked_write(led, WLED_MOD_EN_REG(led->base, i), |
| WLED_NO_MASK, WLED_EN_MASK); |
| if (rc) { |
| dev_err(&led->spmi_dev->dev, |
| "WLED mod enable reg write failed(%d)\n", rc); |
| return rc; |
| } |
| |
| if (led->wled_cfg->dig_mod_gen_en) { |
| rc = qpnp_led_masked_write(led, |
| WLED_MOD_SRC_SEL_REG(led->base, i), |
| WLED_NO_MASK, WLED_USE_EXT_GEN_MOD_SRC); |
| if (rc) { |
| dev_err(&led->spmi_dev->dev, |
| "WLED dig mod en reg write failed(%d)\n", rc); |
| } |
| } |
| |
| rc = qpnp_led_masked_write(led, |
| WLED_FULL_SCALE_REG(led->base, i), WLED_MAX_CURR_MASK, |
| led->max_current); |
| if (rc) { |
| dev_err(&led->spmi_dev->dev, |
| "WLED max current reg write failed(%d)\n", rc); |
| return rc; |
| } |
| |
| } |
| |
| /* dump wled registers */ |
| qpnp_dump_regs(led, wled_debug_regs, ARRAY_SIZE(wled_debug_regs)); |
| |
| return 0; |
| } |
| |
| static int __devinit qpnp_flash_init(struct qpnp_led_data *led) |
| { |
| int rc; |
| |
| rc = qpnp_led_masked_write(led, |
| FLASH_LED_STROBE_CTRL(led->base), |
| FLASH_STROBE_MASK, FLASH_DISABLE_ALL); |
| if (rc) { |
| dev_err(&led->spmi_dev->dev, |
| "LED %d flash write failed(%d)\n", led->id, rc); |
| return rc; |
| } |
| rc = qpnp_led_masked_write(led, FLASH_ENABLE_CONTROL(led->base), |
| FLASH_INIT_MASK, FLASH_ENABLE_MODULE); |
| if (rc) { |
| dev_err(&led->spmi_dev->dev, |
| "Enable reg write failed(%d)\n", rc); |
| return rc; |
| } |
| |
| /* Set flash safety timer */ |
| rc = qpnp_led_masked_write(led, FLASH_SAFETY_TIMER(led->base), |
| FLASH_SAFETY_TIMER_MASK, led->flash_cfg->duration); |
| if (rc) { |
| dev_err(&led->spmi_dev->dev, |
| "Safety timer reg write failed(%d)\n", rc); |
| return rc; |
| } |
| |
| /* Set max current */ |
| rc = qpnp_led_masked_write(led, FLASH_MAX_CURR(led->base), |
| FLASH_CURRENT_MASK, FLASH_MAX_LEVEL); |
| if (rc) { |
| dev_err(&led->spmi_dev->dev, |
| "Max current reg write failed(%d)\n", rc); |
| return rc; |
| } |
| /* Set clamp current */ |
| rc = qpnp_led_masked_write(led, FLASH_CLAMP_CURR(led->base), |
| FLASH_CURRENT_MASK, led->flash_cfg->clamp_curr); |
| if (rc) { |
| dev_err(&led->spmi_dev->dev, |
| "Clamp current reg write failed(%d)\n", rc); |
| return rc; |
| } |
| |
| /* Set timer control - safety or watchdog */ |
| if (led->flash_cfg->safety_timer) |
| rc = qpnp_led_masked_write(led, FLASH_LED_TMR_CTRL(led->base), |
| FLASH_TMR_MASK, FLASH_TMR_SAFETY); |
| else |
| rc = qpnp_led_masked_write(led, FLASH_LED_TMR_CTRL(led->base), |
| FLASH_TMR_MASK, FLASH_TMR_WATCHDOG); |
| if (rc) { |
| dev_err(&led->spmi_dev->dev, |
| "LED timer ctrl reg write failed(%d)\n", rc); |
| return rc; |
| } |
| /* Set headroom */ |
| rc = qpnp_led_masked_write(led, FLASH_HEADROOM(led->base), |
| FLASH_HEADROOM_MASK, led->flash_cfg->headroom); |
| if (rc) { |
| dev_err(&led->spmi_dev->dev, |
| "Headroom reg write failed(%d)\n", rc); |
| return rc; |
| } |
| |
| /* Set mask enable */ |
| rc = qpnp_led_masked_write(led, FLASH_MASK_ENABLE(led->base), |
| FLASH_MASK_REG_MASK, FLASH_MASK_1); |
| if (rc) { |
| dev_err(&led->spmi_dev->dev, |
| "Mask enable reg write failed(%d)\n", rc); |
| return rc; |
| } |
| |
| /* Set startup delay */ |
| rc = qpnp_led_masked_write(led, FLASH_STARTUP_DELAY(led->base), |
| FLASH_STARTUP_DLY_MASK, led->flash_cfg->startup_dly); |
| if (rc) { |
| dev_err(&led->spmi_dev->dev, |
| "Startup delay reg write failed(%d)\n", rc); |
| return rc; |
| } |
| |
| rc = qpnp_led_masked_write(led, FLASH_VREG_OK_FORCE(led->base), |
| FLASH_VREG_MASK, FLASH_HW_VREG_OK); |
| if (rc) { |
| dev_err(&led->spmi_dev->dev, |
| "Vreg OK reg write failed(%d)\n", rc); |
| return rc; |
| } |
| |
| /* Set led current and enable module */ |
| rc = qpnp_led_masked_write(led, led->flash_cfg->current_addr, |
| FLASH_CURRENT_MASK, led->flash_cfg->current_prgm); |
| if (rc) { |
| dev_err(&led->spmi_dev->dev, |
| "Current reg write failed(%d)\n", rc); |
| return rc; |
| } |
| |
| rc = qpnp_led_masked_write(led, FLASH_ENABLE_CONTROL(led->base), |
| FLASH_ENABLE_MODULE_MASK, FLASH_DISABLE_ALL); |
| if (rc) { |
| dev_err(&led->spmi_dev->dev, |
| "Enable reg write failed(%d)\n", rc); |
| return rc; |
| } |
| /* dump flash registers */ |
| qpnp_dump_regs(led, flash_debug_regs, ARRAY_SIZE(flash_debug_regs)); |
| |
| return 0; |
| } |
| |
| static int __devinit qpnp_rgb_init(struct qpnp_led_data *led) |
| { |
| int rc, start_idx, idx_len; |
| |
| rc = qpnp_led_masked_write(led, RGB_LED_SRC_SEL(led->base), |
| RGB_LED_SRC_MASK, RGB_LED_SOURCE_VPH_PWR); |
| if (rc) { |
| dev_err(&led->spmi_dev->dev, |
| "Failed to write led source select register\n"); |
| return rc; |
| } |
| |
| if (led->rgb_cfg->pwm_channel != -1) { |
| led->rgb_cfg->pwm_dev = |
| pwm_request(led->rgb_cfg->pwm_channel, |
| led->cdev.name); |
| |
| if (IS_ERR_OR_NULL(led->rgb_cfg->pwm_dev)) { |
| dev_err(&led->spmi_dev->dev, |
| "could not acquire PWM Channel %d, " \ |
| "error %ld\n", |
| led->rgb_cfg->pwm_channel, |
| PTR_ERR(led->rgb_cfg->pwm_dev)); |
| led->rgb_cfg->pwm_dev = NULL; |
| return -ENODEV; |
| } |
| |
| if (led->rgb_cfg->mode == RGB_MODE_LPG) { |
| start_idx = |
| led->rgb_cfg->duty_cycles->start_idx; |
| idx_len = |
| led->rgb_cfg->duty_cycles->num_duty_pcts; |
| |
| if (idx_len >= PWM_LUT_MAX_SIZE && |
| start_idx) { |
| dev_err(&led->spmi_dev->dev, |
| "Wrong LUT size or index\n"); |
| return -EINVAL; |
| } |
| if ((start_idx + idx_len) > |
| PWM_LUT_MAX_SIZE) { |
| dev_err(&led->spmi_dev->dev, |
| "Exceed LUT limit\n"); |
| return -EINVAL; |
| } |
| rc = pwm_lut_config(led->rgb_cfg->pwm_dev, |
| led->rgb_cfg->pwm_period_us, |
| led->rgb_cfg->duty_cycles->duty_pcts, |
| led->rgb_cfg->lut_params); |
| if (rc < 0) { |
| dev_err(&led->spmi_dev->dev, "Failed to " \ |
| "configure pwm LUT\n"); |
| return rc; |
| } |
| } |
| } else { |
| dev_err(&led->spmi_dev->dev, |
| "Invalid PWM channel\n"); |
| return -EINVAL; |
| } |
| |
| /* Initialize led for use in auto trickle charging mode */ |
| rc = qpnp_led_masked_write(led, RGB_LED_ATC_CTL(led->base), |
| led->rgb_cfg->enable, led->rgb_cfg->enable); |
| |
| return 0; |
| } |
| |
| static int __devinit qpnp_led_initialize(struct qpnp_led_data *led) |
| { |
| int rc; |
| |
| switch (led->id) { |
| case QPNP_ID_WLED: |
| rc = qpnp_wled_init(led); |
| if (rc) |
| dev_err(&led->spmi_dev->dev, |
| "WLED initialize failed(%d)\n", rc); |
| break; |
| case QPNP_ID_FLASH1_LED0: |
| case QPNP_ID_FLASH1_LED1: |
| rc = qpnp_flash_init(led); |
| if (rc) |
| dev_err(&led->spmi_dev->dev, |
| "FLASH initialize failed(%d)\n", rc); |
| break; |
| case QPNP_ID_RGB_RED: |
| case QPNP_ID_RGB_GREEN: |
| case QPNP_ID_RGB_BLUE: |
| rc = qpnp_rgb_init(led); |
| if (rc) |
| dev_err(&led->spmi_dev->dev, |
| "RGB initialize failed(%d)\n", rc); |
| break; |
| default: |
| dev_err(&led->spmi_dev->dev, "Invalid LED(%d)\n", led->id); |
| return -EINVAL; |
| } |
| |
| return 0; |
| } |
| |
| static int __devinit qpnp_get_common_configs(struct qpnp_led_data *led, |
| struct device_node *node) |
| { |
| int rc; |
| u32 val; |
| const char *temp_string; |
| |
| led->cdev.default_trigger = LED_TRIGGER_DEFAULT; |
| rc = of_property_read_string(node, "linux,default-trigger", |
| &temp_string); |
| if (!rc) |
| led->cdev.default_trigger = temp_string; |
| else if (rc != -EINVAL) |
| return rc; |
| |
| led->default_on = false; |
| rc = of_property_read_string(node, "qcom,default-state", |
| &temp_string); |
| if (!rc) { |
| if (strncmp(temp_string, "on", sizeof("on")) == 0) |
| led->default_on = true; |
| } else if (rc != -EINVAL) |
| return rc; |
| |
| led->turn_off_delay_ms = 0; |
| rc = of_property_read_u32(node, "qcom,turn-off-delay-ms", &val); |
| if (!rc) |
| led->turn_off_delay_ms = val; |
| else if (rc != -EINVAL) |
| return rc; |
| |
| return 0; |
| } |
| |
| /* |
| * Handlers for alternative sources of platform_data |
| */ |
| static int __devinit qpnp_get_config_wled(struct qpnp_led_data *led, |
| struct device_node *node) |
| { |
| u32 val; |
| int rc; |
| |
| led->wled_cfg = devm_kzalloc(&led->spmi_dev->dev, |
| sizeof(struct wled_config_data), GFP_KERNEL); |
| if (!led->wled_cfg) { |
| dev_err(&led->spmi_dev->dev, "Unable to allocate memory\n"); |
| return -ENOMEM; |
| } |
| |
| led->wled_cfg->num_strings = WLED_DEFAULT_STRINGS; |
| rc = of_property_read_u32(node, "qcom,num-strings", &val); |
| if (!rc) |
| led->wled_cfg->num_strings = (u8) val; |
| else if (rc != -EINVAL) |
| return rc; |
| |
| led->wled_cfg->ovp_val = WLED_DEFAULT_OVP_VAL; |
| rc = of_property_read_u32(node, "qcom,ovp-val", &val); |
| if (!rc) |
| led->wled_cfg->ovp_val = (u8) val; |
| else if (rc != -EINVAL) |
| return rc; |
| |
| led->wled_cfg->boost_curr_lim = WLED_BOOST_LIM_DEFAULT; |
| rc = of_property_read_u32(node, "qcom,boost-curr-lim", &val); |
| if (!rc) |
| led->wled_cfg->boost_curr_lim = (u8) val; |
| else if (rc != -EINVAL) |
| return rc; |
| |
| led->wled_cfg->cp_select = WLED_CP_SEL_DEFAULT; |
| rc = of_property_read_u32(node, "qcom,cp-sel", &val); |
| if (!rc) |
| led->wled_cfg->cp_select = (u8) val; |
| else if (rc != -EINVAL) |
| return rc; |
| |
| led->wled_cfg->ctrl_delay_us = WLED_CTRL_DLY_DEFAULT; |
| rc = of_property_read_u32(node, "qcom,ctrl-delay-us", &val); |
| if (!rc) |
| led->wled_cfg->ctrl_delay_us = (u8) val; |
| else if (rc != -EINVAL) |
| return rc; |
| |
| led->wled_cfg->switch_freq = WLED_SWITCH_FREQ_DEFAULT; |
| rc = of_property_read_u32(node, "qcom,switch-freq", &val); |
| if (!rc) |
| led->wled_cfg->switch_freq = (u8) val; |
| else if (rc != -EINVAL) |
| return rc; |
| |
| led->wled_cfg->dig_mod_gen_en = |
| of_property_read_bool(node, "qcom,dig-mod-gen-en"); |
| |
| led->wled_cfg->cs_out_en = |
| of_property_read_bool(node, "qcom,cs-out-en"); |
| |
| led->wled_cfg->op_fdbck = |
| of_property_read_bool(node, "qcom,op-fdbck"); |
| |
| return 0; |
| } |
| |
| static int __devinit qpnp_get_config_flash(struct qpnp_led_data *led, |
| struct device_node *node) |
| { |
| int rc; |
| u32 val; |
| |
| led->flash_cfg = devm_kzalloc(&led->spmi_dev->dev, |
| sizeof(struct flash_config_data), GFP_KERNEL); |
| if (!led->flash_cfg) { |
| dev_err(&led->spmi_dev->dev, "Unable to allocate memory\n"); |
| return -ENOMEM; |
| } |
| |
| if (led->id == QPNP_ID_FLASH1_LED0) { |
| led->flash_cfg->enable_module = FLASH_ENABLE_ALL; |
| led->flash_cfg->current_addr = FLASH_LED_0_CURR(led->base); |
| led->flash_cfg->second_addr = FLASH_LED_1_CURR(led->base); |
| led->flash_cfg->trigger_flash = FLASH_LED_0_OUTPUT; |
| } else if (led->id == QPNP_ID_FLASH1_LED1) { |
| led->flash_cfg->enable_module = FLASH_ENABLE_ALL; |
| led->flash_cfg->current_addr = FLASH_LED_1_CURR(led->base); |
| led->flash_cfg->second_addr = FLASH_LED_0_CURR(led->base); |
| led->flash_cfg->trigger_flash = FLASH_LED_1_OUTPUT; |
| } else { |
| dev_err(&led->spmi_dev->dev, "Unknown flash LED name given\n"); |
| return -EINVAL; |
| } |
| |
| rc = of_property_read_u32(node, "qcom,current", &val); |
| if (!rc) |
| led->flash_cfg->current_prgm = (val * |
| FLASH_MAX_LEVEL / led->max_current); |
| else |
| return -EINVAL; |
| |
| rc = of_property_read_u32(node, "qcom,headroom", &val); |
| if (!rc) |
| led->flash_cfg->headroom = (u8) val; |
| else if (rc == -EINVAL) |
| led->flash_cfg->headroom = HEADROOM_300mV; |
| else |
| return rc; |
| |
| rc = of_property_read_u32(node, "qcom,duration", &val); |
| if (!rc) |
| led->flash_cfg->duration = (((u8) val) - 10) / 10; |
| else if (rc == -EINVAL) |
| led->flash_cfg->duration = FLASH_DURATION_200ms; |
| else |
| return rc; |
| |
| rc = of_property_read_u32(node, "qcom,clamp-curr", &val); |
| if (!rc) |
| led->flash_cfg->clamp_curr = (val * |
| FLASH_MAX_LEVEL / led->max_current); |
| else if (rc == -EINVAL) |
| led->flash_cfg->clamp_curr = FLASH_CLAMP_200mA; |
| else |
| return rc; |
| |
| rc = of_property_read_u32(node, "qcom,startup-dly", &val); |
| if (!rc) |
| led->flash_cfg->startup_dly = (u8) val; |
| else if (rc == -EINVAL) |
| led->flash_cfg->startup_dly = DELAY_32us; |
| else |
| return rc; |
| |
| led->flash_cfg->safety_timer = |
| of_property_read_bool(node, "qcom,safety-timer"); |
| |
| return 0; |
| } |
| |
| static int __devinit qpnp_get_config_rgb(struct qpnp_led_data *led, |
| struct device_node *node) |
| { |
| struct property *prop; |
| int rc, i; |
| u32 val; |
| u8 *temp_cfg; |
| |
| led->rgb_cfg = devm_kzalloc(&led->spmi_dev->dev, |
| sizeof(struct rgb_config_data), GFP_KERNEL); |
| if (!led->rgb_cfg) { |
| dev_err(&led->spmi_dev->dev, "Unable to allocate memory\n"); |
| return -ENOMEM; |
| } |
| |
| if (led->id == QPNP_ID_RGB_RED) |
| led->rgb_cfg->enable = RGB_LED_ENABLE_RED; |
| else if (led->id == QPNP_ID_RGB_GREEN) |
| led->rgb_cfg->enable = RGB_LED_ENABLE_GREEN; |
| else if (led->id == QPNP_ID_RGB_BLUE) |
| led->rgb_cfg->enable = RGB_LED_ENABLE_BLUE; |
| else |
| return -EINVAL; |
| |
| rc = of_property_read_u32(node, "qcom,mode", &val); |
| if (!rc) |
| led->rgb_cfg->mode = (u8) val; |
| else |
| return rc; |
| |
| rc = of_property_read_u32(node, "qcom,pwm-channel", &val); |
| if (!rc) |
| led->rgb_cfg->pwm_channel = (u8) val; |
| else |
| return rc; |
| |
| rc = of_property_read_u32(node, "qcom,pwm-us", &val); |
| if (!rc) |
| led->rgb_cfg->pwm_period_us = val; |
| else |
| return rc; |
| |
| if (led->rgb_cfg->mode == RGB_MODE_LPG) { |
| led->rgb_cfg->duty_cycles = |
| devm_kzalloc(&led->spmi_dev->dev, |
| sizeof(struct pwm_duty_cycles), GFP_KERNEL); |
| if (!led->rgb_cfg->duty_cycles) { |
| dev_err(&led->spmi_dev->dev, |
| "Unable to allocate memory\n"); |
| return -ENOMEM; |
| } |
| |
| rc = of_property_read_u32(node, "qcom,duty-ms", &val); |
| if (!rc) |
| led->rgb_cfg->duty_cycles->duty_ms = (u8) val; |
| else |
| return rc; |
| |
| prop = of_find_property(node, "qcom,duty-pcts", |
| &led->rgb_cfg->duty_cycles->num_duty_pcts); |
| if (!prop) { |
| dev_err(&led->spmi_dev->dev, "Looking up property " \ |
| "node qcom,duty-pcts failed\n"); |
| return -ENODEV; |
| } else if (!led->rgb_cfg->duty_cycles->num_duty_pcts) { |
| dev_err(&led->spmi_dev->dev, "Invalid length of " \ |
| "duty pcts\n"); |
| return -EINVAL; |
| } |
| |
| led->rgb_cfg->duty_cycles->duty_pcts = |
| devm_kzalloc(&led->spmi_dev->dev, |
| sizeof(int) * led->rgb_cfg->duty_cycles->num_duty_pcts, |
| GFP_KERNEL); |
| if (!led->rgb_cfg->duty_cycles->duty_pcts) { |
| dev_err(&led->spmi_dev->dev, |
| "Unable to allocate memory\n"); |
| return -ENOMEM; |
| } |
| |
| temp_cfg = devm_kzalloc(&led->spmi_dev->dev, |
| led->rgb_cfg->duty_cycles->num_duty_pcts * |
| sizeof(u8), GFP_KERNEL); |
| if (!temp_cfg) { |
| dev_err(&led->spmi_dev->dev, "Failed to allocate " \ |
| "memory for duty pcts\n"); |
| return -ENOMEM; |
| } |
| |
| memcpy(temp_cfg, prop->value, |
| led->rgb_cfg->duty_cycles->num_duty_pcts); |
| |
| for (i = 0; i < led->rgb_cfg->duty_cycles->num_duty_pcts; i++) |
| led->rgb_cfg->duty_cycles->duty_pcts[i] = |
| (int) temp_cfg[i]; |
| |
| rc = of_property_read_u32(node, "qcom,start-idx", &val); |
| if (!rc) { |
| led->rgb_cfg->lut_params.start_idx = (u8) val; |
| led->rgb_cfg->duty_cycles->start_idx = (u8) val; |
| } else |
| return rc; |
| |
| led->rgb_cfg->lut_params.idx_len = |
| led->rgb_cfg->duty_cycles->num_duty_pcts; |
| led->rgb_cfg->lut_params.lut_pause_hi = 0; |
| led->rgb_cfg->lut_params.lut_pause_lo = 0; |
| led->rgb_cfg->lut_params.ramp_step_ms = 255; |
| led->rgb_cfg->lut_params.flags = QPNP_LED_PWM_FLAGS; |
| } |
| |
| return 0; |
| } |
| |
| static int __devinit qpnp_leds_probe(struct spmi_device *spmi) |
| { |
| struct qpnp_led_data *led, *led_array; |
| struct resource *led_resource; |
| struct device_node *node, *temp; |
| int rc, i, num_leds = 0, parsed_leds = 0; |
| const char *led_label; |
| |
| node = spmi->dev.of_node; |
| if (node == NULL) |
| return -ENODEV; |
| |
| temp = NULL; |
| while ((temp = of_get_next_child(node, temp))) |
| num_leds++; |
| |
| if (!num_leds) |
| return -ECHILD; |
| |
| led_array = devm_kzalloc(&spmi->dev, |
| (sizeof(struct qpnp_led_data) * num_leds), GFP_KERNEL); |
| if (!led_array) { |
| dev_err(&spmi->dev, "Unable to allocate memory\n"); |
| return -ENOMEM; |
| } |
| |
| for_each_child_of_node(node, temp) { |
| led = &led_array[parsed_leds]; |
| led->num_leds = num_leds; |
| led->spmi_dev = spmi; |
| |
| led_resource = spmi_get_resource(spmi, NULL, IORESOURCE_MEM, 0); |
| if (!led_resource) { |
| dev_err(&spmi->dev, "Unable to get LED base address\n"); |
| rc = -ENXIO; |
| goto fail_id_check; |
| } |
| led->base = led_resource->start; |
| |
| rc = of_property_read_string(temp, "label", &led_label); |
| if (rc < 0) { |
| dev_err(&led->spmi_dev->dev, |
| "Failure reading label, rc = %d\n", rc); |
| goto fail_id_check; |
| } |
| |
| rc = of_property_read_string(temp, "linux,name", |
| &led->cdev.name); |
| if (rc < 0) { |
| dev_err(&led->spmi_dev->dev, |
| "Failure reading led name, rc = %d\n", rc); |
| goto fail_id_check; |
| } |
| |
| rc = of_property_read_u32(temp, "qcom,max-current", |
| &led->max_current); |
| if (rc < 0) { |
| dev_err(&led->spmi_dev->dev, |
| "Failure reading max_current, rc = %d\n", rc); |
| goto fail_id_check; |
| } |
| |
| rc = of_property_read_u32(temp, "qcom,id", &led->id); |
| if (rc < 0) { |
| dev_err(&led->spmi_dev->dev, |
| "Failure reading led id, rc = %d\n", rc); |
| goto fail_id_check; |
| } |
| |
| rc = qpnp_get_common_configs(led, temp); |
| if (rc) { |
| dev_err(&led->spmi_dev->dev, |
| "Failure reading common led configuration," \ |
| " rc = %d\n", rc); |
| goto fail_id_check; |
| } |
| |
| led->cdev.brightness_set = qpnp_led_set; |
| led->cdev.brightness_get = qpnp_led_get; |
| |
| if (strncmp(led_label, "wled", sizeof("wled")) == 0) { |
| rc = qpnp_get_config_wled(led, temp); |
| if (rc < 0) { |
| dev_err(&led->spmi_dev->dev, |
| "Unable to read wled config data\n"); |
| goto fail_id_check; |
| } |
| } else if (strncmp(led_label, "flash", sizeof("flash")) |
| == 0) { |
| rc = qpnp_get_config_flash(led, temp); |
| if (rc < 0) { |
| dev_err(&led->spmi_dev->dev, |
| "Unable to read flash config data\n"); |
| goto fail_id_check; |
| } |
| } else if (strncmp(led_label, "rgb", sizeof("rgb")) == 0) { |
| rc = qpnp_get_config_rgb(led, temp); |
| if (rc < 0) { |
| dev_err(&led->spmi_dev->dev, |
| "Unable to read rgb config data\n"); |
| goto fail_id_check; |
| } |
| } else { |
| dev_err(&led->spmi_dev->dev, "No LED matching label\n"); |
| rc = -EINVAL; |
| goto fail_id_check; |
| } |
| |
| spin_lock_init(&led->lock); |
| |
| rc = qpnp_led_initialize(led); |
| if (rc < 0) |
| goto fail_id_check; |
| |
| rc = qpnp_led_set_max_brightness(led); |
| if (rc < 0) |
| goto fail_id_check; |
| |
| rc = led_classdev_register(&spmi->dev, &led->cdev); |
| if (rc) { |
| dev_err(&spmi->dev, "unable to register led %d,rc=%d\n", |
| led->id, rc); |
| goto fail_id_check; |
| } |
| /* configure default state */ |
| if (led->default_on) { |
| led->cdev.brightness = led->cdev.max_brightness; |
| if (led->turn_off_delay_ms > 0) |
| qpnp_led_turn_off(led); |
| } else |
| led->cdev.brightness = LED_OFF; |
| |
| qpnp_led_set(&led->cdev, led->cdev.brightness); |
| |
| parsed_leds++; |
| } |
| dev_set_drvdata(&spmi->dev, led_array); |
| return 0; |
| |
| fail_id_check: |
| for (i = 0; i < parsed_leds; i++) |
| led_classdev_unregister(&led_array[i].cdev); |
| return rc; |
| } |
| |
| static int __devexit qpnp_leds_remove(struct spmi_device *spmi) |
| { |
| struct qpnp_led_data *led_array = dev_get_drvdata(&spmi->dev); |
| int i, parsed_leds = led_array->num_leds; |
| |
| for (i = 0; i < parsed_leds; i++) |
| led_classdev_unregister(&led_array[i].cdev); |
| |
| return 0; |
| } |
| static struct of_device_id spmi_match_table[] = { |
| { .compatible = "qcom,leds-qpnp", |
| } |
| }; |
| |
| static struct spmi_driver qpnp_leds_driver = { |
| .driver = { |
| .name = "qcom,leds-qpnp", |
| .of_match_table = spmi_match_table, |
| }, |
| .probe = qpnp_leds_probe, |
| .remove = __devexit_p(qpnp_leds_remove), |
| }; |
| |
| static int __init qpnp_led_init(void) |
| { |
| return spmi_driver_register(&qpnp_leds_driver); |
| } |
| module_init(qpnp_led_init); |
| |
| static void __exit qpnp_led_exit(void) |
| { |
| spmi_driver_unregister(&qpnp_leds_driver); |
| } |
| module_exit(qpnp_led_exit); |
| |
| MODULE_DESCRIPTION("QPNP LEDs driver"); |
| MODULE_LICENSE("GPL v2"); |
| MODULE_ALIAS("leds:leds-qpnp"); |
| |