On Thu, 2 Apr 2009, Darius Augulis wrote:
> Guennadi Liakhovetski wrote:
> > Use platform power hook to turn the camera on and off.
> >
> > Signed-off-by: Guennadi Liakhovetski <[email protected]>
> > ---
> > diff --git a/drivers/media/video/mt9t031.c b/drivers/media/video/mt9t031.c
> > index 23f9ce9..2b0927b 100644
> > --- a/drivers/media/video/mt9t031.c
> > +++ b/drivers/media/video/mt9t031.c
> > @@ -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;
> > + }
> > + }
>
> probably you would have to call icl->reset there too?
> I guess this camera sensor does have a reset pin?
Reset is not implemented on this board, and I do not want to implement
something that noone can test ATM.
Thanks
Guennadi
>
>
> > +
> > /* 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;
> > }
> > --
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> > More majordomo info at http://vger.kernel.org/majordomo-info.html
> >
>
>
>
---
Guennadi Liakhovetski, Ph.D.
DENX Software Engineering GmbH, MD: Wolfgang Denk & Detlev Zundel
HRB 165235 Munich, Office: Kirchenstr.5, D-82194 Groebenzell, Germany
Phone: +49-8142-66989-0 Fax: +49-8142-66989-80 Email: [email protected]
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