On Mon, 3 Aug 2009, Eric Miao wrote:
> Marek Vasut wrote:
> > Hi!
> >
> > Eric, would you mind applying ?
> >
> > From 4dcbff010e996f4c6e5761b3c19f5d863ab51b39 Mon Sep 17 00:00:00 2001
> > From: Marek Vasut <[email protected]>
> > Date: Mon, 3 Aug 2009 10:27:57 +0200
> > Subject: [PATCH] Add RGB555X and RGB565X formats to pxa-camera
> >
> > Those formats are requiered on widely used OmniVision OV96xx cameras.
> > Those formats are nothing more then endian-swapped RGB555 and RGB565.
> >
> > Signed-off-by: Marek Vasut <[email protected]>
>
> Acked-by: Eric Miao <[email protected]>
>
> Guennadi,
>
> Would be better if this gets merged by you, thanks.
Indeed it would, and I do have a couple of questions to this and related
patches:
1. Marek, you're saying, you need these formats for the OV96xx camera. Yre
you using the patch from Stefan Herbrechtsmeier to support ov96xx or some
other?
2. Mike, while reviewing this patch I came across code in
pxa_camera_setup_cicr(), introduced by your earlier patch:
case V4L2_PIX_FMT_RGB555:
cicr1 |= CICR1_RGB_BPP_VAL(1) | CICR1_RGBT_CONV_VAL(2) |
CICR1_TBIT | CICR1_COLOR_SP_VAL(1);
break;
Why are you enabling the RGB to RGBT conversion here unconditionally?
Generally, what are the advantages of configuring CICR1 for a specific RGB
format compared to using just a raw capture? Do I understand it right,
that ATM we are not using any of those features?
Thanks
Guennadi
>
> > ---
> > drivers/media/video/pxa_camera.c | 4 ++++
> > 1 files changed, 4 insertions(+), 0 deletions(-)
> >
> > diff --git a/drivers/media/video/pxa_camera.c
> > b/drivers/media/video/pxa_camera.c
> > index 46e0d8a..de0fc8a 100644
> > --- a/drivers/media/video/pxa_camera.c
> > +++ b/drivers/media/video/pxa_camera.c
> > @@ -1222,6 +1222,8 @@ static int required_buswidth(const struct
> > soc_camera_data_format *fmt)
> > case V4L2_PIX_FMT_YVYU:
> > case V4L2_PIX_FMT_RGB565:
> > case V4L2_PIX_FMT_RGB555:
> > + case V4L2_PIX_FMT_RGB565X:
> > + case V4L2_PIX_FMT_RGB555X:
> > return 8;
> > default:
> > return fmt->depth;
> > @@ -1260,6 +1262,8 @@ static int pxa_camera_get_formats(struct
> > soc_camera_device *icd, int idx,
> > case V4L2_PIX_FMT_YVYU:
> > case V4L2_PIX_FMT_RGB565:
> > case V4L2_PIX_FMT_RGB555:
> > + case V4L2_PIX_FMT_RGB565X:
> > + case V4L2_PIX_FMT_RGB555X:
> > formats++;
> > if (xlate) {
> > xlate->host_fmt = icd->formats + idx;
>
---
Guennadi Liakhovetski
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