From 8687dfb2d374ad444991ced2a8a7fbc48b1710af Mon Sep 17 00:00:00 2001 From: =?UTF-8?q?Ond=C5=99ej=20Jirman?= Date: Fri, 22 Oct 2021 18:10:18 +0200 Subject: [PATCH 343/389] media: i2c: imx258: Add support for powerdown gpio On some boards powerdown signal needs to be deasserted for this sensor to be enabled. Signed-off-by: Ondrej Jirman --- drivers/media/i2c/imx258.c | 12 ++++++++++++ 1 file changed, 12 insertions(+) diff --git a/drivers/media/i2c/imx258.c b/drivers/media/i2c/imx258.c index eab5fc1ee2f7..3c7e4c1a0c10 100644 --- a/drivers/media/i2c/imx258.c +++ b/drivers/media/i2c/imx258.c @@ -612,6 +612,8 @@ struct imx258 { struct v4l2_ctrl *hblank; struct v4l2_ctrl *exposure; + struct gpio_desc *pwdn_gpio; + /* Current mode */ const struct imx258_mode *cur_mode; @@ -1010,6 +1012,8 @@ static int imx258_power_on(struct device *dev) struct imx258 *imx258 = to_imx258(sd); int ret; + gpiod_set_value_cansleep(imx258->pwdn_gpio, 0); + ret = clk_prepare_enable(imx258->clk); if (ret) dev_err(dev, "failed to enable clock\n"); @@ -1024,6 +1028,8 @@ static int imx258_power_off(struct device *dev) clk_disable_unprepare(imx258->clk); + gpiod_set_value_cansleep(imx258->pwdn_gpio, 1); + return 0; } @@ -1284,6 +1290,12 @@ static int imx258_probe(struct i2c_client *client) if (ret || val != 180) return -EINVAL; + /* request optional power down pin */ + imx258->pwdn_gpio = devm_gpiod_get_optional(&client->dev, "powerdown", + GPIOD_OUT_HIGH); + if (IS_ERR(imx258->pwdn_gpio)) + return PTR_ERR(imx258->pwdn_gpio); + /* Initialize subdev */ v4l2_i2c_subdev_init(&imx258->sd, client, &imx258_subdev_ops); -- 2.35.3