diff options
| author | Guido Günther <agx@sigxcpu.org> | 2020-01-04 11:54:18 +0100 |
|---|---|---|
| committer | Pavel <pavel@ucw.cz> | 2020-01-06 00:41:06 +0100 |
| commit | cffd61a5c7755546154539dcd7f36590e91e002f (patch) | |
| tree | 0d6121518b7f755b2985bd29ee9dd6b01462562a | |
| parent | dt: bindings: lm3692x: Add ti,ovp-microvolt property (diff) | |
| download | linux-cffd61a5c7755546154539dcd7f36590e91e002f.tar.xz linux-cffd61a5c7755546154539dcd7f36590e91e002f.zip | |
leds: lm3692x: Allow to configure over voltage protection
Overvoltage protection is currently using the default of 29V. Make it
configurable via DT.
Signed-off-by: Guido Günther <agx@sigxcpu.org>
Acked-by: Pavel Machek <pavel@ucw.cz>
Signed-off-by: Pavel Machek <pavel@ucw.cz>
| -rw-r--r-- | drivers/leds/leds-lm3692x.c | 34 |
1 files changed, 30 insertions, 4 deletions
diff --git a/drivers/leds/leds-lm3692x.c b/drivers/leds/leds-lm3692x.c index 8b408102e138..28973cc5a6cc 100644 --- a/drivers/leds/leds-lm3692x.c +++ b/drivers/leds/leds-lm3692x.c @@ -114,6 +114,8 @@ struct lm3692x_led { struct regulator *regulator; int led_enable; int model_id; + + u8 boost_ctrl; }; static const struct reg_default lm3692x_reg_defs[] = { @@ -249,10 +251,7 @@ static int lm3692x_init(struct lm3692x_led *led) if (ret) goto out; - ret = regmap_write(led->regmap, LM3692X_BOOST_CTRL, - LM3692X_BOOST_SW_1MHZ | - LM3692X_BOOST_SW_NO_SHIFT | - LM3692X_OCP_PROT_1_5A); + ret = regmap_write(led->regmap, LM3692X_BOOST_CTRL, led->boost_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; int ret; led->enable_gpio = devm_gpiod_get_optional(&led->client->dev, @@ -350,6 +350,32 @@ static int lm3692x_probe_dt(struct lm3692x_led *led) led->regulator = NULL; } + led->boost_ctrl = LM3692X_BOOST_SW_1MHZ | + LM3692X_BOOST_SW_NO_SHIFT | + LM3692X_OCP_PROT_1_5A; + ret = device_property_read_u32(&led->client->dev, + "ti,ovp-microvolt", &ovp); + if (ret) { + led->boost_ctrl |= LM3692X_OVP_29V; + } else { + switch (ovp) { + case 17000000: + break; + case 21000000: + led->boost_ctrl |= LM3692X_OVP_21V; + break; + case 25000000: + led->boost_ctrl |= LM3692X_OVP_25V; + break; + case 29000000: + led->boost_ctrl |= LM3692X_OVP_29V; + break; + default: + dev_err(&led->client->dev, "Invalid OVP %d\n", ovp); + return -EINVAL; + } + } + child = device_get_next_child_node(&led->client->dev, child); if (!child) { dev_err(&led->client->dev, "No LED Child node\n"); |