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Commit f9826514 authored by Guennadi Liakhovetski's avatar Guennadi Liakhovetski Committed by Mauro Carvalho Chehab
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V4L/DVB (11347): mt9t031: use platform power hook 



Use platform power hook to turn the camera on and off.

Signed-off-by: default avatarGuennadi Liakhovetski <lg@denx.de>
Signed-off-by: default avatarMauro Carvalho Chehab <mchehab@redhat.com>
parent 6252d257

drivers/media/video/mt9t031.c

+21 −0
Original line number Diff line number Diff line
@@ -141,8 +141,19 @@ static int get_shutter(struct soc_camera_device *icd, u32 *data) 


static int mt9t031_init(struct soc_camera_device *icd)

{

	struct mt9t031 *mt9t031 = container_of(icd, struct mt9t031, icd);

	struct soc_camera_link *icl = mt9t031->client->dev.platform_data;

	int ret;



	if (icl->power) {

		ret = icl->power(&mt9t031->client->dev, 1);

		if (ret < 0) {

			dev_err(icd->vdev->parent,

				"Platform failed to power-on the camera.\n");

			return ret;

		}

	}



	/* Disable chip output, synchronous option update */

	ret = reg_write(icd, MT9T031_RESET, 1);

	if (ret >= 0)
@@ -150,13 +161,23 @@ static int mt9t031_init(struct soc_camera_device *icd) 
	if (ret >= 0)

		ret = reg_clear(icd, MT9T031_OUTPUT_CONTROL, 2);



	if (ret < 0 && icl->power)

		icl->power(&mt9t031->client->dev, 0);



	return ret >= 0 ? 0 : -EIO;

}



static int mt9t031_release(struct soc_camera_device *icd)

{

	struct mt9t031 *mt9t031 = container_of(icd, struct mt9t031, icd);

	struct soc_camera_link *icl = mt9t031->client->dev.platform_data;



	/* Disable the chip */

	reg_clear(icd, MT9T031_OUTPUT_CONTROL, 2);



	if (icl->power)

		icl->power(&mt9t031->client->dev, 0);



	return 0;

}