// SPDX-License-Identifier: GPL-2.0 /* * Copyright (c) 2019 MediaTek Inc. */ #include #include #include #include #include #include #include #include #include #include enum { MT6360_LED_ISINK1 = 0, MT6360_LED_ISINK2, MT6360_LED_ISINK3, MT6360_LED_ISINK4, MT6360_LED_MAX, }; enum { MT6360_LEDMODE_PWM = 0, MT6360_LEDMODE_BREATH, MT6360_LEDMODE_CC, MT6360_LEDMODE_MAX, }; enum { MT6360_FLED_CH1 = 0, MT6360_FLED_CH2, MT6360_FLED_MAX, }; /* ILED setting/reg */ #define MT6360_SINKCUR_MAX1 (0x0d) #define MT6360_SINKCUR_MAX2 (0x0d) #define MT6360_SINKCUR_MAX3 (0x0d) #define MT6360_SINKCUR_MAX4 (0x1f) #define MT6360_CURRSEL_REG1 (MT6360_PMU_RGB1_ISNK) #define MT6360_CURRSEL_REG2 (MT6360_PMU_RGB2_ISNK) #define MT6360_CURRSEL_REG3 (MT6360_PMU_RGB3_ISNK) #define MT6360_CURRSEL_REG4 (MT6360_PMU_RGB_ML_ISNK) #define MT6360_CURRSEL_MASK1 (0x0f) #define MT6360_CURRSEL_MASK2 (0x0f) #define MT6360_CURRSEL_MASK3 (0x0f) #define MT6360_CURRSEL_MASK4 (0x1f) #define MT6360_LEDMODE_REG1 (MT6360_PMU_RGB1_ISNK) #define MT6360_LEDMODE_REG2 (MT6360_PMU_RGB2_ISNK) #define MT6360_LEDMODE_REG3 (MT6360_PMU_RGB3_ISNK) #define MT6360_LEDMODE_REG4 (0) #define MT6360_LEDMODE_MASK1 (0xc0) #define MT6360_LEDMODE_MASK2 (0xc0) #define MT6360_LEDMODE_MASK3 (0xc0) #define MT6360_LEDMODE_MASK4 (0) #define MT6360_PWMDUTY_REG1 (MT6360_PMU_RGB1_DIM) #define MT6360_PWMDUTY_REG2 (MT6360_PMU_RGB2_DIM) #define MT6360_PWMDUTY_REG3 (MT6360_PMU_RGB3_DIM) #define MT6360_PWMDUTY_REG4 (0) #define MT6360_PWMDUTY_MASK1 (0xff) #define MT6360_PWMDUTY_MASK2 (0xff) #define MT6360_PWMDUTY_MASK3 (0xff) #define MT6360_PWMDUTY_MASK4 (0) #define MT6360_PWMFREQ_REG1 (MT6360_PMU_RGB12_Freq) #define MT6360_PWMFREQ_REG2 (MT6360_PMU_RGB12_Freq) #define MT6360_PWMFREQ_REG3 (MT6360_PMU_RGB34_Freq) #define MT6360_PWMFREQ_REG4 (0) #define MT6360_PWMFREQ_MASK1 (0xe0) #define MT6360_PWMFREQ_MASK2 (0x1c) #define MT6360_PWMFREQ_MASK3 (0xe0) #define MT6360_PWMFREQ_MASK4 (0) #define MT6360_BREATH_REGBASE1 (MT6360_PMU_RGB1_Tr) #define MT6360_BREATH_REGBASE2 (MT6360_PMU_RGB2_Tr) #define MT6360_BREATH_REGBASE3 (MT6360_PMU_RGB3_Tr) #define MT6360_BREATH_REGBASE4 (0) #define MT6360_LEDEN_MASK1 (0x80) #define MT6360_LEDEN_MASK2 (0x40) #define MT6360_LEDEN_MASK3 (0x20) #define MT6360_LEDEN_MASK4 (0x10) #define MT6360_LEDEN_REG (MT6360_PMU_RGB_EN) #define MT6360_LEDALLEN_MASK (0xf0) #define MT6360_CHRIND_MASK (0x08) /* pattern order -> toff, tr1, tr2, ton, tf1, tf2 */ #define MT6360_BRPATTERN_NUM (6) #define MT6360_BREATHREG_NUM (3) /* FLED setting */ #define MT6360_CSENABLE_REG1 (MT6360_PMU_FLED_EN) #define MT6360_CSENABLE_MASK1 (0x02) #define MT6360_CSENABLE_REG2 (MT6360_PMU_FLED_EN) #define MT6360_CSENABLE_MASK2 (0x01) #define MT6360_TORBRIGHT_MAX1 (0x1f) #define MT6360_TORBRIGHT_MAX2 (0x1f) #define MT6360_TORBRIGHT_REG1 (MT6360_PMU_FLED1_TOR_CTRL) #define MT6360_TORBRIGHT_MASK1 (0x1f) #define MT6360_STRBRIGHT_REG1 (MT6360_PMU_FLED1_STRB_CTRL2) #define MT6360_STRBRIGHT_MASK1 (0x7f) #define MT6360_TORBRIGHT_REG2 (MT6360_PMU_FLED2_TOR_CTRL) #define MT6360_TORBRIGHT_MASK2 (0x1f) #define MT6360_STRBRIGHT_REG2 (MT6360_PMU_FLED2_STRB_CTRL2) #define MT6360_STRBRIGHT_MASK2 (0x7f) #define MT6360_TORENABLE_REG1 (MT6360_PMU_FLED_EN) #define MT6360_TORENABLE_MASK1 (0x08) #define MT6360_TORENABLE_REG2 (MT6360_PMU_FLED_EN) #define MT6360_TORENABLE_MASK2 (0x08) #define MT6360_STRBENABLE_REG1 (MT6360_PMU_FLED_EN) #define MT6360_STRBENABLE_MASK1 (0x06) #define MT6360_STRBENABLE_REG2 (MT6360_PMU_FLED_EN) #define MT6360_STRBENABLE_MASK2 (0x04) #define MT6360_STRBTIMEOUT_REG (MT6360_PMU_FLED_STRB_CTRL) #define MT6360_STRBTIMEOUT_MASK (0x7f) #define MT6360_TORCHCUR_MIN (25000) #define MT6360_TORCHCUR_STEP (12500) #define MT6360_TORCHCUR_MAX (400000) #define MT6360_STROBECUR_MIN (50000) #define MT6360_STROBECUR_STEP (12500) #define MT6360_STROBECUR_MAX (1500000) #define MT6360_STRBTIMEOUT_MIN (64000) #define MT6360_STRBTIMEOUT_STEP (32000) #define MT6360_STRBTIMEOUT_MAX (2432000) #define MT6360_FLEDSUPPORT_FAULTS (LED_FAULT_UNDER_VOLTAGE |\ LED_FAULT_SHORT_CIRCUIT |\ LED_FAULT_INPUT_VOLTAGE |\ LED_FAULT_TIMEOUT) struct mt6360_led_platform_data { u32 rgbon_sync; u32 fled1_ultraistrb; u32 fled2_ultraistrb; }; struct breath_element_cfg { /* base, step in ms */ unsigned int base; unsigned int step; unsigned int maxval; unsigned int reg_offset; unsigned int reg_mask; }; struct mt6360_led_classdev { struct led_classdev cdev; int index; struct device_node *np; unsigned int currsel_reg; unsigned int currsel_mask; unsigned int enable_mask; unsigned int mode_reg; unsigned int mode_mask; unsigned int pwmduty_reg; unsigned int pwmduty_mask; unsigned int pwmfreq_reg; unsigned int pwmfreq_mask; unsigned int breath_regbase; }; struct mt6360_fled_classdev { struct led_classdev_flash fl_cdev; int index; struct v4l2_flash *v4l2_flash; struct device_node *np; unsigned int cs_enable_reg; unsigned int cs_enable_mask; unsigned int torch_bright_reg; unsigned int torch_bright_mask; unsigned int torch_enable_reg; unsigned int torch_enable_mask; unsigned int strobe_bright_reg; unsigned int strobe_bright_mask; unsigned int strobe_enable_reg; unsigned int strobe_enable_mask; unsigned int strobe_external_reg; unsigned int strobe_external_mask; u32 faults; }; struct mt6360_led_info { struct device *dev; struct mt6360_led_platform_data *pdata; struct regmap *regmap; struct mt6360_led_classdev mtled_cdev[MT6360_LED_MAX]; struct mt6360_fled_classdev mtfled_cdev[MT6360_FLED_MAX]; unsigned long fl_torch_flags; unsigned long fl_strobe_flags; }; static const struct mt6360_led_platform_data def_platform_data = { .rgbon_sync = 0, .fled1_ultraistrb = 1, .fled2_ultraistrb = 1, }; static int mt6360_led_brightness_set(struct led_classdev *cdev, enum led_brightness brightness) { struct mt6360_led_classdev *mtled_cdev = (struct mt6360_led_classdev *)cdev; struct mt6360_led_info *mli = dev_get_drvdata(cdev->dev->parent); int shift, sync_regval = 0, ret; dev_dbg(cdev->dev, "%s, bright %d\n", __func__, brightness); /* if isink1 user control, set chrind function to sw mode */ if (mtled_cdev->index == MT6360_LED_ISINK1) { ret = regmap_update_bits(mli->regmap, MT6360_PMU_RGB_EN, MT6360_CHRIND_MASK, 0xff); if (ret < 0) dev_err(cdev->dev, "disable chrind func fail\n"); } if (brightness == LED_OFF) { ret = regmap_update_bits(mli->regmap, MT6360_LEDEN_REG, mtled_cdev->enable_mask, 0); if (ret < 0) return ret; if (mtled_cdev->mode_reg == 0) goto out_bright_set; /* if off, force config to cc_mode */ shift = ffs(mtled_cdev->mode_mask) - 1; ret = regmap_update_bits(mli->regmap, mtled_cdev->mode_reg, mtled_cdev->mode_mask, MT6360_LEDMODE_CC << shift); if (ret < 0) dev_err(cdev->dev, "config cc mode fail\n"); goto out_bright_set; } shift = ffs(mtled_cdev->currsel_mask) - 1; brightness -= 1; ret = regmap_update_bits(mli->regmap, mtled_cdev->currsel_reg, mtled_cdev->currsel_mask, brightness << shift); if (ret < 0) return ret; if (mli->pdata->rgbon_sync) { ret = regmap_read(mli->regmap, MT6360_LEDEN_REG, &sync_regval); if (ret < 0) goto out_bright_set; ret = regmap_update_bits(mli->regmap, MT6360_LEDEN_REG, MT6360_LEDALLEN_MASK, 0); if (ret < 0) goto out_bright_set; sync_regval |= mtled_cdev->enable_mask; ret = regmap_update_bits(mli->regmap, MT6360_LEDEN_REG, MT6360_LEDALLEN_MASK, sync_regval); } else { ret = regmap_update_bits(mli->regmap, MT6360_LEDEN_REG, mtled_cdev->enable_mask, 0xff); } out_bright_set: return ret; } static enum led_brightness mt6360_led_brightness_get(struct led_classdev *cdev) { struct mt6360_led_classdev *mtled_cdev = (struct mt6360_led_classdev *)cdev; struct mt6360_led_info *mli = dev_get_drvdata(cdev->dev->parent); unsigned int regval = 0; int shift = ffs(mtled_cdev->currsel_mask) - 1, ret; ret = regmap_read(mli->regmap, MT6360_LEDEN_REG, ®val); if (ret < 0) { dev_err(cdev->dev, "%s: get enable fail\n", __func__); return LED_OFF; } if (!(regval & mtled_cdev->enable_mask)) return LED_OFF; ret = regmap_read(mli->regmap, mtled_cdev->currsel_reg, ®val); if (ret < 0) { dev_err(cdev->dev, "%s: get isink fail\n", __func__); return LED_OFF; } regval &= mtled_cdev->currsel_mask; regval >>= shift; return (regval + 1); } static const unsigned int dim_freqs[] = { 4, 8, 250, 500, 1000, 2000, 4000, 8000, }; static int mt6360_led_blink_set(struct led_classdev *cdev, unsigned long *delay_on, unsigned long *delay_off) { struct mt6360_led_classdev *mtled_cdev = (struct mt6360_led_classdev *)cdev; struct mt6360_led_info *mli = dev_get_drvdata(cdev->dev->parent); int freq, duty, shift, sum, ret; if (mtled_cdev->mode_reg == 0) return -ENOTSUPP; if (*delay_on == 0 && *delay_off == 0) *delay_on = *delay_off = 500; sum = *delay_on + *delay_off; for (freq = 0; freq < ARRAY_SIZE(dim_freqs); freq++) { if (sum <= dim_freqs[freq]) break; } if (freq == ARRAY_SIZE(dim_freqs)) { dev_err(cdev->dev, "exceed pwm frequency max\n"); return -EINVAL; } /* invert */ freq = ARRAY_SIZE(dim_freqs) - 1 - freq; dev_dbg(cdev->dev, "freq sel [%d]\n", freq); shift = ffs(mtled_cdev->pwmfreq_mask) - 1; ret = regmap_update_bits(mli->regmap, mtled_cdev->pwmfreq_reg, mtled_cdev->pwmfreq_mask, freq << shift); if (ret < 0) { dev_err(cdev->dev, "Failed to set pwmfreq\n"); return ret; } duty = 255 * (*delay_on) / sum; shift = ffs(mtled_cdev->pwmduty_mask) - 1; ret = regmap_update_bits(mli->regmap, mtled_cdev->pwmduty_reg, mtled_cdev->pwmduty_mask, duty << shift); if (ret < 0) { dev_err(cdev->dev, "Failed to set pwmduty\n"); return ret; } dev_dbg(cdev->dev, "final duty [%d]\n", duty); shift = ffs(mtled_cdev->mode_mask) - 1; ret = regmap_update_bits(mli->regmap, mtled_cdev->mode_reg, mtled_cdev->mode_mask, MT6360_LEDMODE_PWM << shift); return ret; } #define MT6360_LED_DESC(_id) { \ .cdev = { \ .name = "mt6360_isink" #_id, \ .max_brightness = MT6360_SINKCUR_MAX##_id, \ .brightness_set_blocking = mt6360_led_brightness_set, \ .brightness_get = mt6360_led_brightness_get, \ .blink_set = mt6360_led_blink_set, \ }, \ .index = MT6360_LED_ISINK##_id, \ .currsel_reg = MT6360_CURRSEL_REG##_id, \ .currsel_mask = MT6360_CURRSEL_MASK##_id, \ .enable_mask = MT6360_LEDEN_MASK##_id, \ .mode_reg = MT6360_LEDMODE_REG##_id, \ .mode_mask = MT6360_LEDMODE_MASK##_id, \ .pwmduty_reg = MT6360_PWMDUTY_REG##_id, \ .pwmduty_mask = MT6360_PWMDUTY_MASK##_id, \ .pwmfreq_reg = MT6360_PWMFREQ_REG##_id, \ .pwmfreq_mask = MT6360_PWMFREQ_MASK##_id, \ .breath_regbase = MT6360_BREATH_REGBASE##_id, \ } /* ISINK 1/2/3 for RGBLED, ISINK4 for MoonLight */ static const struct mt6360_led_classdev def_led_classdev[MT6360_LED_MAX] = { MT6360_LED_DESC(1), MT6360_LED_DESC(2), MT6360_LED_DESC(3), MT6360_LED_DESC(4), }; static inline bool mt6360_fled_check_flags_if_any(unsigned long *flags) { return (*flags) ? true : false; } static int mt6360_fled_strobe_brightness_set( struct led_classdev_flash *fled_cdev, u32 brightness) { struct led_classdev *led_cdev = &fled_cdev->led_cdev; struct mt6360_led_info *mli = dev_get_drvdata(led_cdev->dev->parent); struct led_flash_setting *fs = &fled_cdev->brightness; struct mt6360_fled_classdev *mtfled_cdev = (void *)fled_cdev; int id = mtfled_cdev->index, shift; u32 val; dev_dbg(led_cdev->dev, "%s: id[%d], brightness %u\n", __func__, id, brightness); val = brightness; val = (val - fs->min) / fs->step; shift = ffs(mtfled_cdev->strobe_bright_mask) - 1; return regmap_update_bits(mli->regmap, mtfled_cdev->strobe_bright_reg, mtfled_cdev->strobe_bright_mask, val << shift); } static int mt6360_fled_strobe_brightness_get( struct led_classdev_flash *fled_cdev, u32 *brightness) { struct led_classdev *led_cdev = &fled_cdev->led_cdev; struct mt6360_led_info *mli = dev_get_drvdata(led_cdev->dev->parent); struct led_flash_setting *fs = &fled_cdev->brightness; struct mt6360_fled_classdev *mtfled_cdev = (void *)fled_cdev; int id = mtfled_cdev->index, shift, ret; u32 regval = 0; dev_dbg(led_cdev->dev, "%s: id[%d]\n", __func__, id); ret = regmap_read(mli->regmap, mtfled_cdev->strobe_bright_reg, ®val); if (ret < 0) return ret; regval &= mtfled_cdev->strobe_bright_mask; shift = ffs(mtfled_cdev->strobe_bright_mask) - 1; regval >>= shift; /* convert to microamp value */ *brightness = regval * fs->step + fs->min; return 0; } static int mt6360_fled_strobe_set( struct led_classdev_flash *fled_cdev, bool state) { struct led_classdev *led_cdev = &fled_cdev->led_cdev; struct mt6360_led_info *mli = dev_get_drvdata(led_cdev->dev->parent); struct mt6360_fled_classdev *mtfled_cdev = (void *)fled_cdev; int id = mtfled_cdev->index, ret; dev_dbg(led_cdev->dev, "%s: id[%d], state %d\n", __func__, id, state); if (!(state ^ test_bit(id, &mli->fl_strobe_flags))) { dev_dbg(led_cdev->dev, "no change for strobe [%lu]\n", mli->fl_strobe_flags); return 0; } if (mt6360_fled_check_flags_if_any(&mli->fl_torch_flags)) { dev_err(led_cdev->dev, "Disable all leds torch [%lu]\n", mli->fl_torch_flags); return -EINVAL; } ret = regmap_update_bits(mli->regmap, mtfled_cdev->cs_enable_reg, mtfled_cdev->cs_enable_mask, state ? 0xff : 0); if (ret < 0) { dev_err(led_cdev->dev, "Fail to set cs enable [%d]\n", state); goto out_strobe_set; } ret = regmap_update_bits(mli->regmap, mtfled_cdev->strobe_enable_reg, mtfled_cdev->strobe_enable_mask, state ? 0xff : 0); if (ret < 0) { dev_err(led_cdev->dev, "Fail to set strb enable [%d]\n", state); goto out_strobe_set; } if (state) { if (!mt6360_fled_check_flags_if_any(&mli->fl_strobe_flags)) usleep_range(5000, 6000); set_bit(id, &mli->fl_strobe_flags); mtfled_cdev->faults = 0; } else { clear_bit(id, &mli->fl_strobe_flags); if (!mt6360_fled_check_flags_if_any(&mli->fl_strobe_flags)) usleep_range(400, 500); } out_strobe_set: return ret; } static int mt6360_fled_strobe_get( struct led_classdev_flash *fled_cdev, bool *state) { struct led_classdev *led_cdev = &fled_cdev->led_cdev; struct mt6360_led_info *mli = dev_get_drvdata(led_cdev->dev->parent); struct mt6360_fled_classdev *mtfled_cdev = (void *)fled_cdev; int id = mtfled_cdev->index; dev_dbg(led_cdev->dev, "%s: id[%d]\n", __func__, id); *state = test_bit(id, &mli->fl_strobe_flags) ? true : false; return 0; } static int mt6360_fled_strobe_timeout_set( struct led_classdev_flash *fled_cdev, u32 timeout) { struct led_classdev *led_cdev = &fled_cdev->led_cdev; struct mt6360_led_info *mli = dev_get_drvdata(led_cdev->dev->parent); struct led_flash_setting *ts = &fled_cdev->timeout; struct mt6360_fled_classdev *mtfled_cdev = (void *)fled_cdev; int id = mtfled_cdev->index, shift, ret; u32 regval; dev_dbg(led_cdev->dev, "%s: id[%d], timeout %u\n", __func__, id, timeout); regval = (timeout - ts->min) / ts->step; shift = ffs(MT6360_STRBTIMEOUT_MASK) - 1; ret = regmap_update_bits(mli->regmap, MT6360_STRBTIMEOUT_REG, MT6360_STRBTIMEOUT_MASK, regval << shift); return ret; } static int mt6360_fled_strobe_fault_get( struct led_classdev_flash *fled_cdev, u32 *fault) { struct led_classdev *led_cdev = &fled_cdev->led_cdev; struct mt6360_fled_classdev *mtfled_cdev = (void *)fled_cdev; int id = mtfled_cdev->index; dev_dbg(led_cdev->dev, "%s: id[%d]\n", __func__, id); *fault = mtfled_cdev->faults; return 0; } static const struct led_flash_ops mt6360_fled_ops = { .flash_brightness_set = mt6360_fled_strobe_brightness_set, .flash_brightness_get = mt6360_fled_strobe_brightness_get, .strobe_set = mt6360_fled_strobe_set, .strobe_get = mt6360_fled_strobe_get, .timeout_set = mt6360_fled_strobe_timeout_set, .fault_get = mt6360_fled_strobe_fault_get, }; static int mt6360_fled_brightness_set(struct led_classdev *led_cdev, enum led_brightness brightness) { struct led_classdev_flash *lcf = lcdev_to_flcdev(led_cdev); struct mt6360_led_info *mli = dev_get_drvdata(led_cdev->dev->parent); struct mt6360_fled_classdev *mtfled_cdev = (void *)lcf; int id = mtfled_cdev->index, shift, keep, ret; dev_dbg(led_cdev->dev, "%s: id [%d], brightness %d\n", __func__, id, brightness); if (mt6360_fled_check_flags_if_any(&mli->fl_strobe_flags)) { dev_err(led_cdev->dev, "Disable all leds strobe [%lu]\n", mli->fl_strobe_flags); return -EINVAL; } if (brightness == LED_OFF) { clear_bit(id, &mli->fl_torch_flags); keep = mt6360_fled_check_flags_if_any(&mli->fl_torch_flags); ret = regmap_update_bits(mli->regmap, mtfled_cdev->torch_enable_reg, mtfled_cdev->torch_enable_mask, keep ? 0xff : 0); if (ret < 0) { dev_err(led_cdev->dev, "Fail to set torch disable\n"); goto out_bright_set; } ret = regmap_update_bits(mli->regmap, mtfled_cdev->cs_enable_reg, mtfled_cdev->cs_enable_mask, 0); if (ret < 0) dev_err(led_cdev->dev, "Fail to set torch disable\n"); goto out_bright_set; } shift = ffs(mtfled_cdev->torch_bright_mask) - 1; brightness -= 1; ret = regmap_update_bits(mli->regmap, mtfled_cdev->torch_bright_reg, mtfled_cdev->torch_bright_mask, brightness << shift); if (ret < 0) { dev_err(led_cdev->dev, "Fail to set torch bright [%d]\n", brightness); goto out_bright_set; } ret = regmap_update_bits(mli->regmap, mtfled_cdev->cs_enable_reg, mtfled_cdev->cs_enable_mask, 0xff); if (ret < 0) { dev_err(led_cdev->dev, "Fail to set cs enable\n"); goto out_bright_set; } ret = regmap_update_bits(mli->regmap, mtfled_cdev->torch_enable_reg, mtfled_cdev->torch_enable_mask, 0xff); set_bit(id, &mli->fl_torch_flags); out_bright_set: return ret; } static enum led_brightness mt6360_fled_brightness_get( struct led_classdev *led_cdev) { struct led_classdev_flash *lcf = lcdev_to_flcdev(led_cdev); struct mt6360_led_info *mli = dev_get_drvdata(led_cdev->dev->parent); struct mt6360_fled_classdev *mtfled_cdev = (void *)lcf; int id = mtfled_cdev->index, shift, ret; u32 regval = 0; dev_dbg(led_cdev->dev, "%s: id [%d]\n", __func__, id); if (!test_bit(id, &mli->fl_torch_flags)) return LED_OFF; ret = regmap_read(mli->regmap, mtfled_cdev->torch_bright_reg, ®val); if (ret < 0) { dev_err(led_cdev->dev, "%s: Fail to get torb reg\n", __func__); return LED_OFF; } shift = ffs(mtfled_cdev->torch_bright_mask) - 1; regval &= mtfled_cdev->torch_bright_mask; regval >>= shift; return (regval + 1); } #define MT6360_FLED_DESC(_id) { \ .fl_cdev = { \ .led_cdev = { \ .name = "mt6360_fled_ch" #_id, \ .max_brightness = MT6360_TORBRIGHT_MAX##_id, \ .brightness_set_blocking = mt6360_fled_brightness_set, \ .brightness_get = mt6360_fled_brightness_get, \ .flags = LED_DEV_CAP_FLASH, \ }, \ .brightness = { \ .min = MT6360_STROBECUR_MIN, \ .step = MT6360_STROBECUR_STEP, \ .max = MT6360_STROBECUR_MAX, \ .val = MT6360_STROBECUR_MIN, \ }, \ .timeout = { \ .min = MT6360_STRBTIMEOUT_MIN, \ .step = MT6360_STRBTIMEOUT_STEP, \ .max = MT6360_STRBTIMEOUT_MAX, \ .val = MT6360_STRBTIMEOUT_MIN, \ }, \ .ops = &mt6360_fled_ops, \ }, \ .index = MT6360_FLED_CH##_id, \ .cs_enable_reg = MT6360_CSENABLE_REG##_id, \ .cs_enable_mask = MT6360_CSENABLE_MASK##_id, \ .torch_bright_reg = MT6360_TORBRIGHT_REG##_id, \ .torch_bright_mask = MT6360_TORBRIGHT_MASK##_id, \ .torch_enable_reg = MT6360_TORENABLE_REG##_id, \ .torch_enable_mask = MT6360_TORENABLE_MASK##_id, \ .strobe_bright_reg = MT6360_STRBRIGHT_REG##_id, \ .strobe_bright_mask = MT6360_STRBRIGHT_MASK##_id, \ .strobe_enable_reg = MT6360_STRBENABLE_REG##_id, \ .strobe_enable_mask = MT6360_STRBENABLE_MASK##_id, \ } static const struct mt6360_fled_classdev def_fled_classdev[MT6360_FLED_MAX] = { MT6360_FLED_DESC(1), MT6360_FLED_DESC(2), }; #if IS_ENABLED(CONFIG_V4L2_FLASH_LED_CLASS) static int mt6360_fled_external_strobe_set( struct v4l2_flash *v4l2_flash, bool enable) { struct led_classdev_flash *lcf = v4l2_flash->fled_cdev; struct led_classdev *led_cdev = &lcf->led_cdev; struct mt6360_led_info *mli = dev_get_drvdata(led_cdev->dev->parent); struct mt6360_fled_classdev *mtfled_cdev = (void *)lcf; int id = mtfled_cdev->index, ret; dev_dbg(led_cdev->dev, "%s: id[%d], %d\n", __func__, id, enable); if (!(enable ^ test_bit(id, &mli->fl_strobe_flags))) { dev_dbg(led_cdev->dev, "no change for strobe [%lu]\n", mli->fl_strobe_flags); return 0; } if (mt6360_fled_check_flags_if_any(&mli->fl_torch_flags)) { dev_err(led_cdev->dev, "Disable all leds torch [%lu]\n", mli->fl_torch_flags); return -EINVAL; } ret = regmap_update_bits(mli->regmap, mtfled_cdev->cs_enable_reg, mtfled_cdev->cs_enable_mask, enable ? 0xff : 0); if (enable) { set_bit(id, &mli->fl_strobe_flags); mtfled_cdev->faults = 0; } else clear_bit(id, &mli->fl_strobe_flags); return ret; } static const struct v4l2_flash_ops v4l2_flash_ops = { .external_strobe_set = mt6360_fled_external_strobe_set, }; static void mt6360_init_v4l2_flash_config( struct mt6360_fled_classdev *mtfled_cdev, struct v4l2_flash_config *config) { struct led_flash_setting *torch_intensity = &config->intensity; struct led_classdev *led_cdev = &(mtfled_cdev->fl_cdev.led_cdev); s32 val; snprintf(config->dev_name, sizeof(config->dev_name), "%s", mtfled_cdev->fl_cdev.led_cdev.name); torch_intensity->min = MT6360_TORCHCUR_MIN; torch_intensity->step = MT6360_TORCHCUR_STEP; val = MT6360_TORCHCUR_MIN; val += ((led_cdev->max_brightness - 1) * MT6360_TORCHCUR_STEP); torch_intensity->val = torch_intensity->max = val; config->flash_faults |= MT6360_FLEDSUPPORT_FAULTS; config->has_external_strobe = 1; } #else static const struct v4l2_flash_ops v4l2_flash_ops; static void mt6360_init_v4l2_flash_config( struct mt6360_fled_classdev *mtfled_cdev, struct v4l2_flash_config *config) { } #endif /* IS_ENABLED(CONFIG_V4L2_FLASH_LED_CLASS) */ static irqreturn_t mt6360_pmu_fled_lvf_evt_handler(int irq, void *data) { struct mt6360_led_info *mli = data; dev_err(mli->dev, "%s\n", __func__); mli->mtfled_cdev[MT6360_FLED_CH1].faults |= LED_FAULT_UNDER_VOLTAGE; mli->mtfled_cdev[MT6360_FLED_CH2].faults |= LED_FAULT_UNDER_VOLTAGE; return IRQ_HANDLED; } static irqreturn_t mt6360_pmu_fled2_short_evt_handler(int irq, void *data) { struct mt6360_led_info *mli = data; dev_err(mli->dev, "%s\n", __func__); mli->mtfled_cdev[MT6360_FLED_CH2].faults |= LED_FAULT_SHORT_CIRCUIT; return IRQ_HANDLED; } static irqreturn_t mt6360_pmu_fled1_short_evt_handler(int irq, void *data) { struct mt6360_led_info *mli = data; dev_err(mli->dev, "%s\n", __func__); mli->mtfled_cdev[MT6360_FLED_CH1].faults |= LED_FAULT_SHORT_CIRCUIT; return IRQ_HANDLED; } static irqreturn_t mt6360_pmu_fled2_strb_to_evt_handler(int irq, void *data) { struct mt6360_led_info *mli = data; dev_dbg(mli->dev, "%s\n", __func__); mli->mtfled_cdev[MT6360_FLED_CH2].faults |= LED_FAULT_TIMEOUT; return IRQ_HANDLED; } static irqreturn_t mt6360_pmu_fled1_strb_to_evt_handler(int irq, void *data) { struct mt6360_led_info *mli = data; dev_dbg(mli->dev, "%s\n", __func__); mli->mtfled_cdev[MT6360_FLED_CH1].faults |= LED_FAULT_TIMEOUT; return IRQ_HANDLED; } static irqreturn_t mt6360_pmu_fled_chg_vinovp_evt_handler(int irq, void *data) { struct mt6360_led_info *mli = data; dev_warn(mli->dev, "%s\n", __func__); mli->mtfled_cdev[MT6360_FLED_CH1].faults |= LED_FAULT_INPUT_VOLTAGE; mli->mtfled_cdev[MT6360_FLED_CH2].faults |= LED_FAULT_INPUT_VOLTAGE; return IRQ_HANDLED; } static struct mt6360_pmu_irq_desc mt6360_pmu_fled_irq_desc[] = { { "fled_chg_vinovp_evt", mt6360_pmu_fled_chg_vinovp_evt_handler }, { "fled_lvf_evt", mt6360_pmu_fled_lvf_evt_handler }, { "fled2_short_evt", mt6360_pmu_fled2_short_evt_handler }, { "fled1_short_evt", mt6360_pmu_fled1_short_evt_handler }, { "fled2_strb_to_evt", mt6360_pmu_fled2_strb_to_evt_handler }, { "fled1_strb_to_evt", mt6360_pmu_fled1_strb_to_evt_handler }, }; static int mt6360_fled_irq_register(struct platform_device *pdev) { struct mt6360_pmu_irq_desc *irq_desc; int i, irq, ret; for (i = 0; i < ARRAY_SIZE(mt6360_pmu_fled_irq_desc); i++) { irq_desc = mt6360_pmu_fled_irq_desc + i; if (unlikely(!irq_desc->name)) continue; irq = platform_get_irq_byname(pdev, irq_desc->name); if (irq < 0) continue; ret = devm_request_threaded_irq(&pdev->dev, irq, NULL, irq_desc->irq_handler, IRQF_TRIGGER_FALLING, irq_desc->name, platform_get_drvdata(pdev)); if (ret < 0) { dev_err(&pdev->dev, "request %s irq fail\n", irq_desc->name); return ret; } } return 0; } static int mt6360_iled_parse_dt(struct device *dev, struct mt6360_led_info *mli) { struct device_node *iled_np, *child; struct mt6360_led_classdev *mtled_cdev; u32 val; int ret; if (!dev->of_node) return 0; iled_np = of_find_node_by_name(dev->of_node, "iled"); if (!iled_np) return 0; for_each_available_child_of_node(iled_np, child) { ret = of_property_read_u32(child, "reg", &val); if (ret) { dev_err(dev, "Fail to read reg property\n"); continue; } if (val >= MT6360_LED_MAX) { dev_err(dev, "Invalid iled reg [%u]\n", val); ret = -EINVAL; goto out_iled_dt; } mtled_cdev = mli->mtled_cdev + val; of_property_read_string(child, "label", &(mtled_cdev->cdev.name)); of_property_read_string(child, "linux,default-trigger", &(mtled_cdev->cdev.default_trigger)); mtled_cdev->np = child; } return 0; out_iled_dt: of_node_put(child); return ret; } static int mt6360_fled_parse_dt(struct device *dev, struct mt6360_led_info *mli) { struct device_node *fled_np, *child; struct mt6360_fled_classdev *mtfled_cdev; struct led_classdev *led_cdev; struct led_flash_setting *fs; u32 val; int ret; if (!dev->of_node) return 0; fled_np = of_find_node_by_name(dev->of_node, "fled"); if (!fled_np) return 0; for_each_available_child_of_node(fled_np, child) { ret = of_property_read_u32(child, "reg", &val); if (ret) { dev_err(dev, "Fail to read reg property\n"); continue; } if (val >= MT6360_FLED_MAX) { dev_err(dev, "Invalid fled reg [%u]\n", val); ret = -EINVAL; goto out_fled_dt; } mtfled_cdev = mli->mtfled_cdev + val; of_property_read_string(child, "label", &(mtfled_cdev->fl_cdev.led_cdev.name)); ret = of_property_read_u32(child, "led-max-microamp", &val); if (ret) { dev_warn(dev, "led-max-microamp property missing\n"); val = MT6360_TORCHCUR_MIN; } if (val < MT6360_TORCHCUR_MIN) val = MT6360_TORCHCUR_MIN; val = (val - MT6360_TORCHCUR_MIN) / MT6360_TORCHCUR_STEP + 1; led_cdev = &(mtfled_cdev->fl_cdev.led_cdev); led_cdev->max_brightness = min(led_cdev->max_brightness, val); ret = of_property_read_u32(child, "flash-max-microamp", &val); if (ret) { dev_warn(dev, "flash-max-microamp property missing\n"); val = MT6360_STROBECUR_MIN; } if (val < MT6360_STROBECUR_MIN) val = MT6360_STROBECUR_MIN; fs = &(mtfled_cdev->fl_cdev.brightness); fs->val = fs->max = min(fs->max, val); ret = of_property_read_u32(child, "flash-max-timeout", &val); if (ret) { dev_warn(dev, "flash-max-timeout property missing\n"); val = MT6360_STRBTIMEOUT_MIN; } if (val < MT6360_STRBTIMEOUT_MIN) val = MT6360_STRBTIMEOUT_MIN; fs = &(mtfled_cdev->fl_cdev.timeout); fs->val = fs->max = min(fs->max, val); mtfled_cdev->np = child; } return 0; out_fled_dt: of_node_put(child); return ret; } static const struct mt6360_pdata_prop mt6360_pdata_props[] = { MT6360_PDATA_VALPROP(fled1_ultraistrb, struct mt6360_led_platform_data, MT6360_PMU_FLED1_STRB_CTRL2, 7, 0x80, NULL, 0), MT6360_PDATA_VALPROP(fled2_ultraistrb, struct mt6360_led_platform_data, MT6360_PMU_FLED2_STRB_CTRL2, 7, 0x80, NULL, 0), }; static int mt6360_led_apply_pdata(struct mt6360_led_info *mli, struct mt6360_led_platform_data *pdata) { int ret; dev_dbg(mli->dev, "%s ++\n", __func__); ret = mt6360_pdata_apply_helper(mli->regmap, pdata, mt6360_pdata_props, ARRAY_SIZE(mt6360_pdata_props)); if (ret < 0) return ret; dev_dbg(mli->dev, "%s --\n", __func__); return 0; } static const struct mt6360_val_prop mt6360_val_props[] = { MT6360_DT_VALPROP(rgbon_sync, struct mt6360_led_platform_data), }; static int mt6360_led_parse_dt_data(struct device *dev, struct mt6360_led_platform_data *pdata) { struct device_node *np = dev->of_node; dev_dbg(dev, "%s ++\n", __func__); memcpy(pdata, &def_platform_data, sizeof(*pdata)); mt6360_dt_parser_helper(np, (void *)pdata, mt6360_val_props, ARRAY_SIZE(mt6360_val_props)); dev_dbg(dev, "%s --\n", __func__); return 0; } static int mt6360_led_probe(struct platform_device *pdev) { struct mt6360_led_platform_data *pdata = dev_get_platdata(&pdev->dev); struct mt6360_led_info *mli; struct mt6360_led_classdev *mtled_cdev; struct mt6360_fled_classdev *mtfled_cdev; struct v4l2_flash_config v4l2_config; int i, ret; dev_dbg(&pdev->dev, "%s\n", __func__); mli = devm_kzalloc(&pdev->dev, sizeof(*mli), GFP_KERNEL); if (!mli) return -ENOMEM; if (pdev->dev.of_node) { pdata = devm_kzalloc(&pdev->dev, sizeof(*pdata), GFP_KERNEL); if (!pdata) return -ENOMEM; ret = mt6360_led_parse_dt_data(&pdev->dev, pdata); if (ret < 0) { dev_err(&pdev->dev, "parse dt fail\n"); return ret; } } if (!pdata) { dev_err(&pdev->dev, "no platform data specified\n"); return -EINVAL; } mli->dev = &pdev->dev; mli->pdata = pdata; platform_set_drvdata(pdev, mli); /* get parent regmap */ mli->regmap = dev_get_regmap(pdev->dev.parent, NULL); if (!mli->regmap) { dev_err(&pdev->dev, "Failed to get parent regmap\n"); return -ENODEV; } /* apply platform data */ ret = mt6360_led_apply_pdata(mli, pdata); if (ret < 0) { dev_err(&pdev->dev, "apply pdata fail\n"); return ret; } /* iled register */ memcpy(mli->mtled_cdev, def_led_classdev, sizeof(def_led_classdev)); ret = mt6360_iled_parse_dt(&pdev->dev, mli); if (ret < 0) { dev_err(&pdev->dev, "Fail to parse iled dt\n"); return ret; } for (i = 0; i < MT6360_LED_MAX; i++) { mtled_cdev = mli->mtled_cdev + i; ret = devm_led_classdev_register(&pdev->dev, &(mtled_cdev->cdev)); if (ret < 0) { dev_err(&pdev->dev, "Failed to register led[%d]\n", i); return ret; } mtled_cdev->cdev.dev->of_node = mtled_cdev->np; } /* fled register */ memcpy(mli->mtfled_cdev, def_fled_classdev, sizeof(def_fled_classdev)); ret = mt6360_fled_parse_dt(&pdev->dev, mli); if (ret < 0) { dev_err(&pdev->dev, "Fail to parse fled dt\n"); return ret; } for (i = 0; i < MT6360_FLED_MAX; i++) { mtfled_cdev = mli->mtfled_cdev + i; ret = led_classdev_flash_register(&pdev->dev, &mtfled_cdev->fl_cdev); if (ret < 0) { dev_err(&pdev->dev, "Failed to register fled[%d]\n", i); goto out_fled_cdev; } } for (i = 0; i < MT6360_FLED_MAX; i++) { mtfled_cdev = mli->mtfled_cdev + i; memset(&v4l2_config, 0, sizeof(v4l2_config)); mt6360_init_v4l2_flash_config(mtfled_cdev, &v4l2_config); mtfled_cdev->v4l2_flash = v4l2_flash_init(&pdev->dev, of_fwnode_handle(mtfled_cdev->np), &mtfled_cdev->fl_cdev, &v4l2_flash_ops, &v4l2_config); if (IS_ERR(mtfled_cdev->v4l2_flash)) { dev_err(&pdev->dev, "Failed to register v4l2_sd\n"); ret = PTR_ERR(mtfled_cdev->v4l2_flash); goto out_v4l2_sd; } } ret = mt6360_fled_irq_register(pdev); if (ret < 0) { dev_err(&pdev->dev, "Failed to register irqs\n"); goto out_v4l2_sd; } dev_info(&pdev->dev, "Successfully probed\n"); return 0; out_v4l2_sd: while (--i >= 0) { mtfled_cdev = mli->mtfled_cdev + i; v4l2_flash_release(mtfled_cdev->v4l2_flash); } i = MT6360_FLED_MAX; out_fled_cdev: while (--i >= 0) { mtfled_cdev = mli->mtfled_cdev + i; led_classdev_flash_unregister(&mtfled_cdev->fl_cdev); } return ret; } static int mt6360_led_remove(struct platform_device *pdev) { struct mt6360_led_info *mli = platform_get_drvdata(pdev); struct mt6360_fled_classdev *mtfled_cdev; int i; for (i = 0; i < MT6360_FLED_MAX; i++) { mtfled_cdev = mli->mtfled_cdev + i; v4l2_flash_release(mtfled_cdev->v4l2_flash); led_classdev_flash_unregister(&mtfled_cdev->fl_cdev); } return 0; } static const struct of_device_id __maybe_unused mt6360_led_of_id[] = { { .compatible = "mediatek,mt6360_led", }, {}, }; MODULE_DEVICE_TABLE(of, mt6360_led_of_id); static const struct platform_device_id mt6360_led_id[] = { { "mt6360_led", 0 }, {}, }; MODULE_DEVICE_TABLE(platform, mt6360_led_id); static struct platform_driver mt6360_led_driver = { .driver = { .name = "mt6360_led", .owner = THIS_MODULE, .of_match_table = of_match_ptr(mt6360_led_of_id), }, .probe = mt6360_led_probe, .remove = mt6360_led_remove, .id_table = mt6360_led_id, }; module_platform_driver(mt6360_led_driver); MODULE_AUTHOR("CY_Huang "); MODULE_DESCRIPTION("MT6360 Led Driver"); MODULE_LICENSE("GPL"); MODULE_VERSION("1.0.0");