The stk3310 and stk3310 chips have an input for power to the infrared LED. Add support for managing it's state. Signed-off-by: Aren Moynihan <aren@xxxxxxxxxxxxxxxxx> --- drivers/iio/light/stk3310.c | 23 ++++++++++++++++++++++- 1 file changed, 22 insertions(+), 1 deletion(-) diff --git a/drivers/iio/light/stk3310.c b/drivers/iio/light/stk3310.c index a0547eeca3e3..ee1ac95dbc0e 100644 --- a/drivers/iio/light/stk3310.c +++ b/drivers/iio/light/stk3310.c @@ -120,6 +120,7 @@ struct stk3310_data { struct regmap_field *reg_flag_psint; struct regmap_field *reg_flag_nf; struct regulator *vdd_reg; + struct regulator *led_reg; }; static const struct iio_event_spec stk3310_events[] = { @@ -614,6 +615,10 @@ static int stk3310_probe(struct i2c_client *client) if (IS_ERR(data->vdd_reg)) return dev_err_probe(&client->dev, ret, "get regulator vdd failed\n"); + data->led_reg = devm_regulator_get(&client->dev, "leda"); + if (IS_ERR(data->led_reg)) + return dev_err_probe(&client->dev, ret, "get regulator led failed\n"); + ret = stk3310_regmap_init(data); if (ret < 0) return ret; @@ -629,12 +634,18 @@ static int stk3310_probe(struct i2c_client *client) return dev_err_probe(&client->dev, ret, "regulator vdd enable failed\n"); + ret = regulator_enable(data->led_reg); + if (ret) { + dev_err_probe(&client->dev, ret, "regulator led enable failed\n"); + goto err_vdd_disable; + } + /* we need a short delay to allow the chip time to power on */ fsleep(1000); ret = stk3310_init(indio_dev); if (ret < 0) - goto err_vdd_disable; + goto err_led_disable; if (client->irq > 0) { ret = devm_request_threaded_irq(&client->dev, client->irq, @@ -660,6 +671,8 @@ static int stk3310_probe(struct i2c_client *client) err_standby: stk3310_set_state(data, STK3310_STATE_STANDBY); +err_led_disable: + regulator_disable(data->led_reg); err_vdd_disable: regulator_disable(data->vdd_reg); return ret; @@ -672,6 +685,7 @@ static void stk3310_remove(struct i2c_client *client) iio_device_unregister(indio_dev); stk3310_set_state(iio_priv(indio_dev), STK3310_STATE_STANDBY); + regulator_disable(data->led_reg); regulator_disable(data->vdd_reg); } @@ -687,6 +701,7 @@ static int stk3310_suspend(struct device *dev) return ret; regcache_mark_dirty(data->regmap); + regulator_disable(data->led_reg); regulator_disable(data->vdd_reg); return 0; @@ -706,6 +721,12 @@ static int stk3310_resume(struct device *dev) return ret; } + ret = regulator_enable(data->led_reg); + if (ret) { + dev_err(dev, "Failed to re-enable regulator led\n"); + return ret; + } + fsleep(1000); ret = regcache_sync(data->regmap); -- 2.44.0