diff options
| author |   Markuss Broks <markuss.broks@gmail.com> | 2022-05-23 20:53:43 +0300 |
|---|---|---|
| committer |   Jonathan Cameron <Jonathan.Cameron@huawei.com> | 2022-06-11 14:35:28 +0100 |
| commit | e8941aab845747b0f3b96e6aacc13828cf65a7eb (patch) | |
| tree | 1d7aa25c739e7ad63a501caa07f5e0c15bf16381 /drivers/iio/proximity | |
| parent | proximity: vl53l0x: Handle the VDD regulator (diff) | |
| download | linux-dev-e8941aab845747b0f3b96e6aacc13828cf65a7eb.tar.xz linux-dev-e8941aab845747b0f3b96e6aacc13828cf65a7eb.zip | |
proximity: vl53l0x: Handle the reset GPIO
Handle the GPIO connected to the XSHUT/RST_N pin of VL53L0X.
Signed-off-by: Markuss Broks <markuss.broks@gmail.com>
Link: https://lore.kernel.org/r/20220523175344.5845-5-markuss.broks@gmail.com
Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
Diffstat (limited to 'drivers/iio/proximity')
| -rw-r--r-- | drivers/iio/proximity/vl53l0x-i2c.c | 11 |
1 files changed, 11 insertions, 0 deletions
diff --git a/drivers/iio/proximity/vl53l0x-i2c.c b/drivers/iio/proximity/vl53l0x-i2c.c index db2bdba3daa6..3b7a33ff601d 100644 --- a/drivers/iio/proximity/vl53l0x-i2c.c +++ b/drivers/iio/proximity/vl53l0x-i2c.c @@ -15,6 +15,7 @@ */ #include <linux/delay.h> +#include <linux/gpio/consumer.h> #include <linux/i2c.h> #include <linux/irq.h> #include <linux/interrupt.h> @@ -44,6 +45,7 @@ struct vl53l0x_data { struct i2c_client *client; struct completion completion; struct regulator *vdd_supply; + struct gpio_desc *reset_gpio; }; static irqreturn_t vl53l0x_handle_irq(int irq, void *priv) @@ -196,6 +198,8 @@ static void vl53l0x_power_off(void *_data) { struct vl53l0x_data *data = _data; + gpiod_set_value_cansleep(data->reset_gpio, 1); + regulator_disable(data->vdd_supply); } @@ -207,6 +211,8 @@ static int vl53l0x_power_on(struct vl53l0x_data *data) if (ret) return ret; + gpiod_set_value_cansleep(data->reset_gpio, 0); + usleep_range(3200, 5000); return 0; @@ -236,6 +242,11 @@ static int vl53l0x_probe(struct i2c_client *client) return dev_err_probe(&client->dev, PTR_ERR(data->vdd_supply), "Unable to get VDD regulator\n"); + data->reset_gpio = devm_gpiod_get_optional(&client->dev, "reset", GPIOD_OUT_HIGH); + if (IS_ERR(data->reset_gpio)) + return dev_err_probe(&client->dev, PTR_ERR(data->reset_gpio), + "Cannot get reset GPIO\n"); + error = vl53l0x_power_on(data); if (error) return dev_err_probe(&client->dev, error, |