@@ -91,6 +91,10 @@
#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
@@ -133,6 +137,7 @@ struct lm3532_led {
int mode;
int num_leds;
int ctrl_brt_pointer;
+ int full_scale_current;
u32 led_strings[LM3532_MAX_CONTROL_BANKS];
char label[LED_MAX_NAME_SIZE];
};
@@ -362,6 +367,8 @@ static int lm3532_init_registers(struct lm3532_led *led)
unsigned int output_cfg_mask = 0;
int brightness_config_reg;
int brightness_config_val;
+ int fs_current_reg;
+ int fs_current_val;
int ret, i;
if (drvdata->enable_gpio)
@@ -383,6 +390,16 @@ 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);
@@ -558,6 +575,12 @@ static int lm3532_parse_node(struct lm3532_data *priv)
goto child_out;
}
+ ret = fwnode_property_read_u32(child, "ti,fs-current",
+ &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);
Allow the full scale current to be configured at init. Valid rangles are 5mA->29.8mA. Signed-off-by: Dan Murphy <dmurphy@ti.com> --- drivers/leds/leds-lm3532.c | 23 +++++++++++++++++++++++ 1 file changed, 23 insertions(+) -- 2.22.0.214.g8dca754b1e