IMX6UL capture rgb888 video

[yunweihe]

Dear all,

I would like to capture video on IMX6UL platfrom,  the video interface is parallel rgb 24-bit, so input format is rgb888, the resolution is 1080p30

But I find the IMX6UL capture driver seems not support rgb888 capture. The driver file is drivers/media/platform/mxc/subdev/mx6s_capture.c, we can see it only supports these formats:

250 static struct mx6s_fmt formats[] = {
251 {
252 .name = "UYVY-16",
253 .fourcc = V4L2_PIX_FMT_UYVY,
254 .pixelformat = V4L2_PIX_FMT_UYVY,
255 .mbus_code = V4L2_MBUS_FMT_UYVY8_2X8,
256 .bpp = 2,
257 }, {
258 .name = "YUYV-16",
259 .fourcc = V4L2_PIX_FMT_YUYV,
260 .pixelformat = V4L2_PIX_FMT_YUYV,
261 .mbus_code = V4L2_MBUS_FMT_YUYV8_2X8,
262 .bpp = 2,
263 }, {
264 .name = "YUV32 (X-Y-U-V)",
265 .fourcc = V4L2_PIX_FMT_YUV32,
266 .pixelformat = V4L2_PIX_FMT_YUV32,
267 .mbus_code = V4L2_MBUS_FMT_AYUV8_1X32,
268 .bpp = 4,
269 }
270 };

So did the capture driver of IMX6UL support rgb888, and  could it capture 30fps when the resolution is 1080p?

[yunweihe]

Hi Joan,

Thanks for your reply.  

The capture driver for  IMX6UL is <Yocto_BuildDir>/linux/drivers/media/platform/mxc/subdev/mx6s_capture.c.

For other IMX6 processors the capture  is  <Yocto_BuildDir>/linux/drivers/media/platform/mxc/capture.

My board input video is fromlvds, we change the lvds signal to rgb888.

So the driver of IMX6UL can support the rgb888 input?

[joanxie]

yes mx6ul supports 24bits capture, but let me remind, in current bsp, which doesn't support it, you should change the source code for your own device.

[yunweihe]

Thanks Joan 

can you give me some suggestions how to modify the imx6ul capture driver to support rgb24bits.

I'm not familiar with the driver and the csi module.

[joanxie]

what camera do you use? refer to the linux reference manual, the driver path is:<Yocto_BuildDir>/linux/drivers/media/platform/mxc/capture, and refer the capture test on ov562, mx6ul capture can support up to 1080P@15fps.