From f9bd3dd885e5202fd26adf4106137f7b1ae723b1 Mon Sep 17 00:00:00 2001 From: Ondrej Jirman Date: Mon, 9 Sep 2024 16:49:41 +0200 Subject: [PATCH 339/484] media: imx258: Add reset gpio IMX258 features a reset input that needs to be controlled when powering up the chip. Signed-off-by: Ondrej Jirman --- drivers/media/i2c/imx258.c | 15 +++++++++++++++ 1 file changed, 15 insertions(+) diff --git a/drivers/media/i2c/imx258.c b/drivers/media/i2c/imx258.c index b39ea2075877..e4c4db37fc81 100644 --- a/drivers/media/i2c/imx258.c +++ b/drivers/media/i2c/imx258.c @@ -678,6 +678,7 @@ struct imx258 { struct mutex mutex; struct clk *clk; + struct gpio_desc *reset_gpio; struct regulator_bulk_data supplies[IMX258_NUM_SUPPLIES]; }; @@ -1113,12 +1114,20 @@ static int imx258_power_on(struct device *dev) return ret; } + mdelay(20); + ret = clk_prepare_enable(imx258->clk); if (ret) { dev_err(dev, "failed to enable clock\n"); regulator_bulk_disable(IMX258_NUM_SUPPLIES, imx258->supplies); } + usleep_range(1000, 2000); + + gpiod_set_value_cansleep(imx258->reset_gpio, 0); + + usleep_range(400, 500); + return ret; } @@ -1128,6 +1137,7 @@ static int imx258_power_off(struct device *dev) struct imx258 *imx258 = to_imx258(sd); clk_disable_unprepare(imx258->clk); + gpiod_set_value_cansleep(imx258->reset_gpio, 1); regulator_bulk_disable(IMX258_NUM_SUPPLIES, imx258->supplies); return 0; @@ -1426,6 +1436,11 @@ static int imx258_probe(struct i2c_client *client) return dev_err_probe(&client->dev, ret, "failed to get regulators\n"); + imx258->reset_gpio = devm_gpiod_get_optional(&client->dev, "reset", + GPIOD_OUT_HIGH); + if (IS_ERR(imx258->reset_gpio)) + return PTR_ERR(imx258->reset_gpio); + imx258->clk = devm_clk_get_optional(&client->dev, NULL); if (IS_ERR(imx258->clk)) return dev_err_probe(&client->dev, PTR_ERR(imx258->clk), -- 2.49.0