Re: square-only image on Nokia N900 camera -- pipeline setup in python (was Re: [RFC PATCH 00/24] Make Nokia N900 cameras working)

[Pavel Machek <pavel@ucw.cz>]

On Fri 2016-07-01 13:01:54, Pavel Machek wrote:
> On Fri 2016-07-01 10:50:25, Pavel Machek wrote:
> > Hi!
> > 
> > > On gitlab is the latest version of pipeline setup if python. I also
> > > got fcam to work (slowly) on the camera, with autofocus and
> > > autogain. Capturing from preview modes works fine, but image quality
> > > is not good, as expected. Capturing raw GRBG10 images works, but
> > > images are square, with values being outside square being 0.
> > > 
> > > Same problem is there with yavta and fcam-dev capture, so I suspect
> > > there's something in kernel. If you have an idea what could be wrong /
> > > what to try, let me know. If omap3isp works for you in v4.6, and
> > > produces expected rectangular images, that would be useful to know,
> > > too.
> > > 
> > > Python capture script is at
> > > 
> > > https://gitlab.com/tui/tui/commit/266b6eb302dcf1481e3e90a05bf98180e5759168
> > 
> > I switched to the front camera (vs6555 pixel array 2-0010 + vs6555
> > binner 2-0010) and got same effect: preview image works fine, raw
> > image is square. Still kernel v4.6.
> 
> Same issue with kernel v4.7-rc5.

And this seems to fix it. Now image fills whole frame.

But I still can't get 5MP format to work, it fails with:

[  497.929016] check_format checking px 808534338 808534338, h 1968
1968, w 2592 2592, bpline 5184 5184, size 10202112 10202112 field 1 1
[  497.929107] configuring for 2592(5184)x1968
[  497.936248] stream on success
[  498.020233] omap3isp 480bc000.isp: CCDC won't become idle!
[  525.563476] omap3isp 480bc000.isp: Unable to stop OMAP3 ISP CCDC


commit 5268a954cd6af4853ad8e05f32ff4741c245e65e
Author: Pavel <pavel@ucw.cz>
Date:   Fri Jul 1 21:34:35 2016 +0200

    This seems to fix stuff for me -- now square limitation of images is gone.

diff --git a/drivers/media/platform/omap3isp/ispccdc.c b/drivers/media/platform/omap3isp/ispccdc.c
index 5c52ae8..0e052e6 100644
--- a/drivers/media/platform/omap3isp/ispccdc.c
+++ b/drivers/media/platform/omap3isp/ispccdc.c
@@ -1185,7 +1185,8 @@ static void ccdc_configure(struct isp_ccdc_device *ccdc)
 	/* Use the raw, unprocessed data when writing to memory. The H3A and
 	 * histogram modules are still fed with lens shading corrected data.
 	 */
-	syn_mode &= ~ISPCCDC_SYN_MODE_VP2SDR;
+//	syn_mode &= ~ISPCCDC_SYN_MODE_VP2SDR;
+	syn_mode |= ISPCCDC_SYN_MODE_VP2SDR;
 
 	if (ccdc->output & CCDC_OUTPUT_MEMORY)
 		syn_mode |= ISPCCDC_SYN_MODE_WEN;

-- 
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