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V4L/DVB (11347): mt9t031: use platform power hook

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

Signed-off-by: Guennadi Liakhovetski <lg@denx.de>
Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
This commit is contained in:
Guennadi Liakhovetski 2009-04-03 10:14:02 -03:00 committed by Mauro Carvalho Chehab
parent 6252d25776
commit f982651410
1 changed files with 21 additions and 0 deletions
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21
drivers/media/video/mt9t031.c
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@ -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;
}