[<prev] [next>] [<thread-prev] [thread-next>] [day] [month] [year] [list]
Message-ID: <20240327231710.53188-24-git@luigi311.com>
Date: Wed, 27 Mar 2024 17:17:09 -0600
From: git@...gi311.com
To: linux-media@...r.kernel.org
Cc: dave.stevenson@...pberrypi.com,
jacopo.mondi@...asonboard.com,
mchehab@...nel.org,
robh@...nel.org,
krzysztof.kozlowski+dt@...aro.org,
conor+dt@...nel.org,
shawnguo@...nel.org,
s.hauer@...gutronix.de,
kernel@...gutronix.de,
festevam@...il.com,
sakari.ailus@...ux.intel.com,
devicetree@...r.kernel.org,
imx@...ts.linux.dev,
linux-arm-kernel@...ts.infradead.org,
linux-kernel@...r.kernel.org,
Luigi311 <git@...gi311.com>,
Ondrej Jirman <megous@...ous.com>
Subject: [PATCH 23/23] drivers: media: i2c: imx258: Add support for reset gpio
From: Luigi311 <git@...gi311.com>
It was documented in DT, but not implemented.
Signed-off-by: Ondrej Jirman <megous@...ous.com>
---
drivers/media/i2c/imx258.c | 14 +++++++++++++-
1 file changed, 13 insertions(+), 1 deletion(-)
diff --git a/drivers/media/i2c/imx258.c b/drivers/media/i2c/imx258.c
index d8c51d5f04e0..42e1c9246bed 100644
--- a/drivers/media/i2c/imx258.c
+++ b/drivers/media/i2c/imx258.c
@@ -687,6 +687,7 @@ struct imx258 {
unsigned int csi2_flags;
struct gpio_desc *powerdown_gpio;
+ struct gpio_desc *reset_gpio;
/*
* Mutex for serialized access:
@@ -1239,7 +1240,11 @@ static int imx258_power_on(struct device *dev)
regulator_bulk_disable(IMX258_NUM_SUPPLIES, imx258->supplies);
}
- return ret;
+ gpiod_set_value_cansleep(imx258->reset_gpio, 0);
+
+ usleep_range(400, 500);
+
+ return 0;
}
static int imx258_power_off(struct device *dev)
@@ -1250,6 +1255,7 @@ static int imx258_power_off(struct device *dev)
clk_disable_unprepare(imx258->clk);
regulator_bulk_disable(IMX258_NUM_SUPPLIES, imx258->supplies);
+ gpiod_set_value_cansleep(imx258->reset_gpio, 1);
gpiod_set_value_cansleep(imx258->powerdown_gpio, 1);
return 0;
@@ -1561,6 +1567,12 @@ static int imx258_probe(struct i2c_client *client)
if (IS_ERR(imx258->powerdown_gpio))
return PTR_ERR(imx258->powerdown_gpio);
+ /* request optional reset pin */
+ 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);
+
/* Initialize subdev */
v4l2_i2c_subdev_init(&imx258->sd, client, &imx258_subdev_ops);
--
2.42.0
Powered by blists - more mailing lists