leds: lm3532: Add full scale current configuration (517ea49a) · Commits · 戴 / test

drivers/leds/leds-lm3532.c

+25 −0

Original line number	Diff line number	Diff line
		@@ -89,6 +89,10 @@
		#define LM3532_NUM_AVG_VALS 8
		#define LM3532_NUM_IMP_VALS 32

		#define LM3532_FS_CURR_MIN 5000
		#define LM3532_FS_CURR_MAX 29800
		#define LM3532_FS_CURR_STEP 800

		/*
		* struct lm3532_als_data
		* @config - value of ALS configuration register
		@@ -121,6 +125,7 @@ struct lm3532_als_data {
		* @mode - Mode of the LED string
		* @ctrl_brt_pointer - Zone target register that controls the sink
		* @num_leds - Number of LED strings are supported in this array
		* @full_scale_current - The full-scale current setting for the current sink.
		* @led_strings - The LED strings supported in this array
		* @label - LED label
		*/
		@@ -132,6 +137,7 @@ struct lm3532_led {
		int mode;
		int ctrl_brt_pointer;
		int num_leds;
		int full_scale_current;
		u32 led_strings[LM3532_MAX_CONTROL_BANKS];
		char label[LED_MAX_NAME_SIZE];
		};
		@@ -363,6 +369,8 @@ static int lm3532_init_registers(struct lm3532_led *led)
		unsigned int output_cfg_mask = 0;
		unsigned int brightness_config_reg;
		unsigned int brightness_config_val;
		int fs_current_reg;
		int fs_current_val;
		int ret, i;

		if (drvdata->enable_gpio)
		@@ -385,6 +393,17 @@ static int lm3532_init_registers(struct lm3532_led *led)
		if (ret)
		return ret;

		if (led->full_scale_current) {
		fs_current_reg = LM3532_REG_CTRL_A_FS_CURR + led->control_bank * 2;
		fs_current_val = (led->full_scale_current - LM3532_FS_CURR_MIN) /
		LM3532_FS_CURR_STEP;

		ret = regmap_write(drvdata->regmap, fs_current_reg,
		fs_current_val);
		if (ret)
		return ret;
		}

		for (i = 0; i < led->num_leds; i++) {
		output_cfg_shift = led->led_strings[i] * 2;
		output_cfg_val \|= (led->control_bank << output_cfg_shift);
		@@ -560,6 +579,12 @@ static int lm3532_parse_node(struct lm3532_data *priv)
		goto child_out;
		}

		ret = fwnode_property_read_u32(child, "led-max-microamp",
		&led->full_scale_current);

		if (led->full_scale_current > LM3532_FS_CURR_MAX)
		led->full_scale_current = LM3532_FS_CURR_MAX;

		if (led->mode == LM3532_BL_MODE_ALS) {
		led->mode = LM3532_ALS_CTRL;
		ret = lm3532_parse_als(priv);

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