Messages in this thread Patch in this message | | | From | Guido Günther <> | Subject | [PATCH v2 4/6] leds: lm3692x: Allow to configure brigthness mode | Date | Wed, 25 Dec 2019 12:07:17 +0100 |
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Brightness mode is currently hardcoded as linear in the driver. Make exponential mode configurable via DT.
Signed-off-by: Guido Günther <agx@sigxcpu.org> --- drivers/leds/leds-lm3692x.c | 12 +++++++++--- 1 file changed, 9 insertions(+), 3 deletions(-)
diff --git a/drivers/leds/leds-lm3692x.c b/drivers/leds/leds-lm3692x.c index 28973cc5a6cc..ff20560a8263 100644 --- a/drivers/leds/leds-lm3692x.c +++ b/drivers/leds/leds-lm3692x.c @@ -115,7 +115,7 @@ struct lm3692x_led { int led_enable; int model_id; - u8 boost_ctrl; + u8 boost_ctrl, brightness_ctrl; }; static const struct reg_default lm3692x_reg_defs[] = { @@ -267,8 +267,7 @@ static int lm3692x_init(struct lm3692x_led *led) if (ret) goto out; - ret = regmap_write(led->regmap, LM3692X_BRT_CTRL, - LM3692X_BL_ADJ_POL | LM3692X_RAMP_EN); + ret = regmap_write(led->regmap, LM3692X_BRT_CTRL, led->brightness_ctrl); if (ret) goto out; @@ -326,6 +325,7 @@ static int lm3692x_probe_dt(struct lm3692x_led *led) struct fwnode_handle *child = NULL; struct led_init_data init_data = {}; u32 ovp; + bool exp_mode; int ret; led->enable_gpio = devm_gpiod_get_optional(&led->client->dev, @@ -376,6 +376,12 @@ static int lm3692x_probe_dt(struct lm3692x_led *led) } } + led->brightness_ctrl = LM3692X_BL_ADJ_POL | LM3692X_RAMP_EN; + exp_mode = device_property_read_bool(&led->client->dev, + "ti,brightness-mapping-exponential"); + if (exp_mode) + led->brightness_ctrl |= LM3692X_MAP_MODE_EXP; + child = device_get_next_child_node(&led->client->dev, child); if (!child) { dev_err(&led->client->dev, "No LED Child node\n"); -- 2.23.0
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