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path: root/drivers/media/i2c/adv7183.c
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Diffstat (limited to 'drivers/media/i2c/adv7183.c')
-rw-r--r--drivers/media/i2c/adv7183.c51
1 files changed, 25 insertions, 26 deletions
diff --git a/drivers/media/i2c/adv7183.c b/drivers/media/i2c/adv7183.c
index 92cafdea3f1f..ba746a19fd39 100644
--- a/drivers/media/i2c/adv7183.c
+++ b/drivers/media/i2c/adv7183.c
@@ -7,7 +7,7 @@
#include <linux/delay.h>
#include <linux/errno.h>
-#include <linux/gpio.h>
+#include <linux/gpio/consumer.h>
#include <linux/i2c.h>
#include <linux/init.h>
#include <linux/module.h>
@@ -28,8 +28,8 @@ struct adv7183 {
v4l2_std_id std; /* Current set standard */
u32 input;
u32 output;
- unsigned reset_pin;
- unsigned oe_pin;
+ struct gpio_desc *reset_pin;
+ struct gpio_desc *oe_pin;
struct v4l2_mbus_framefmt fmt;
};
@@ -465,9 +465,9 @@ static int adv7183_s_stream(struct v4l2_subdev *sd, int enable)
struct adv7183 *decoder = to_adv7183(sd);
if (enable)
- gpio_set_value(decoder->oe_pin, 0);
+ gpiod_set_value(decoder->oe_pin, 1);
else
- gpio_set_value(decoder->oe_pin, 1);
+ gpiod_set_value(decoder->oe_pin, 0);
udelay(1);
return 0;
}
@@ -531,7 +531,6 @@ static int adv7183_probe(struct i2c_client *client,
struct v4l2_subdev_format fmt = {
.which = V4L2_SUBDEV_FORMAT_ACTIVE,
};
- const unsigned *pin_array;
/* Check if the adapter supports the needed features */
if (!i2c_check_functionality(client->adapter, I2C_FUNC_SMBUS_BYTE_DATA))
@@ -540,29 +539,28 @@ static int adv7183_probe(struct i2c_client *client,
v4l_info(client, "chip found @ 0x%02x (%s)\n",
client->addr << 1, client->adapter->name);
- pin_array = client->dev.platform_data;
- if (pin_array == NULL)
- return -EINVAL;
-
decoder = devm_kzalloc(&client->dev, sizeof(*decoder), GFP_KERNEL);
if (decoder == NULL)
return -ENOMEM;
- decoder->reset_pin = pin_array[0];
- decoder->oe_pin = pin_array[1];
-
- if (devm_gpio_request_one(&client->dev, decoder->reset_pin,
- GPIOF_OUT_INIT_LOW, "ADV7183 Reset")) {
- v4l_err(client, "failed to request GPIO %d\n", decoder->reset_pin);
- return -EBUSY;
- }
-
- if (devm_gpio_request_one(&client->dev, decoder->oe_pin,
- GPIOF_OUT_INIT_HIGH,
- "ADV7183 Output Enable")) {
- v4l_err(client, "failed to request GPIO %d\n", decoder->oe_pin);
- return -EBUSY;
- }
+ /*
+ * Requesting high will assert reset, the line should be
+ * flagged as active low in descriptor table or machine description.
+ */
+ decoder->reset_pin = devm_gpiod_get(&client->dev, "reset",
+ GPIOD_OUT_HIGH);
+ if (IS_ERR(decoder->reset_pin))
+ return PTR_ERR(decoder->reset_pin);
+ gpiod_set_consumer_name(decoder->reset_pin, "ADV7183 Reset");
+ /*
+ * Requesting low will start with output disabled, the line should be
+ * flagged as active low in descriptor table or machine description.
+ */
+ decoder->oe_pin = devm_gpiod_get(&client->dev, "oe",
+ GPIOD_OUT_LOW);
+ if (IS_ERR(decoder->oe_pin))
+ return PTR_ERR(decoder->oe_pin);
+ gpiod_set_consumer_name(decoder->reset_pin, "ADV7183 Output Enable");
sd = &decoder->sd;
v4l2_i2c_subdev_init(sd, client, &adv7183_ops);
@@ -594,7 +592,8 @@ static int adv7183_probe(struct i2c_client *client,
/* reset chip */
/* reset pulse width at least 5ms */
mdelay(10);
- gpio_set_value(decoder->reset_pin, 1);
+ /* De-assert reset line (descriptor tagged active low) */
+ gpiod_set_value(decoder->reset_pin, 0);
/* wait 5ms before any further i2c writes are performed */
mdelay(5);