Hi Laurent,

On Thu, Mar 28, 2019 at 09:07:20AM +0200, Laurent Pinchart wrote:
> Add support for the V4L2_PIX_FMT_RGBA555, V4L2_PIX_FMT_RGBX555,
> V4L2_PIX_FMT_ABGR555, V4L2_PIX_FMT_XBGR555, V4L2_PIX_FMT_BGRA555 and
> V4L2_PIX_FMT_BGRX555 formats to the VSP driver.
>
> Signed-off-by: Laurent Pinchart <laurent.pinchart+renesas@ideasonboard.com>
> ---
>  drivers/media/platform/vsp1/vsp1_pipe.c | 32 +++++++++++++++++++++++++
>  1 file changed, 32 insertions(+)
>
> diff --git a/drivers/media/platform/vsp1/vsp1_pipe.c b/drivers/media/platform/vsp1/vsp1_pipe.c
> index f6665871aa11..92f71dec99c5 100644
> --- a/drivers/media/platform/vsp1/vsp1_pipe.c
> +++ b/drivers/media/platform/vsp1/vsp1_pipe.c
> @@ -66,14 +66,46 @@ static const struct vsp1_format_info vsp1_video_formats[] = {
>  	  VI6_FMT_BGRA_4444, VI6_RPF_DSWAP_P_LLS | VI6_RPF_DSWAP_P_LWS |
>  	  VI6_RPF_DSWAP_P_WDS,
>  	  1, { 16, 0, 0 }, false, false, 1, 1, false },
> +#define V4L2_PIX_FMT_ARGB555 v4l2_fourcc('A', 'R', '1', '5') /* 16  ARGB-1-5-5-5  */

Why is this here? I see the exact same line in videodev2.h.
Is this a leftover?

>  	{ V4L2_PIX_FMT_ARGB555, MEDIA_BUS_FMT_ARGB8888_1X32,
>  	  VI6_FMT_ARGB_1555, VI6_RPF_DSWAP_P_LLS | VI6_RPF_DSWAP_P_LWS |
>  	  VI6_RPF_DSWAP_P_WDS,
>  	  1, { 16, 0, 0 }, false, false, 1, 1, true },
> +#define V4L2_PIX_FMT_XRGB555 v4l2_fourcc('X', 'R', '1', '5') /* 16  XRGB-1-5-5-5  */

same here and below

>  	{ V4L2_PIX_FMT_XRGB555, MEDIA_BUS_FMT_ARGB8888_1X32,
>  	  VI6_FMT_XRGB_1555, VI6_RPF_DSWAP_P_LLS | VI6_RPF_DSWAP_P_LWS |
>  	  VI6_RPF_DSWAP_P_WDS,
>  	  1, { 16, 0, 0 }, false, false, 1, 1, false },
> +#define V4L2_PIX_FMT_RGBA555 v4l2_fourcc('R', 'A', '1', '5') /* 16  RGBA-5-5-5-1  */
> +	{ V4L2_PIX_FMT_RGBA555, MEDIA_BUS_FMT_ARGB8888_1X32,
> +	  VI6_FMT_RGBA_5551, VI6_RPF_DSWAP_P_LLS | VI6_RPF_DSWAP_P_LWS |
> +	  VI6_RPF_DSWAP_P_WDS,
> +	  1, { 16, 0, 0 }, false, false, 1, 1, true },
> +#define V4L2_PIX_FMT_RGBX555 v4l2_fourcc('R', 'X', '1', '5') /* 16  RGBX-5-5-5-1  */
> +	{ V4L2_PIX_FMT_RGBX555, MEDIA_BUS_FMT_ARGB8888_1X32,
> +	  VI6_FMT_RGBX_5551, VI6_RPF_DSWAP_P_LLS | VI6_RPF_DSWAP_P_LWS |
> +	  VI6_RPF_DSWAP_P_WDS,
> +	  1, { 16, 0, 0 }, false, false, 1, 1, false },
> +#define V4L2_PIX_FMT_ABGR555 v4l2_fourcc('A', 'B', '1', '5') /* 16  ABGR-1-5-5-5  */
> +	{ V4L2_PIX_FMT_ABGR555, MEDIA_BUS_FMT_ARGB8888_1X32,
> +	  VI6_FMT_ABGR_1555, VI6_RPF_DSWAP_P_LLS | VI6_RPF_DSWAP_P_LWS |
> +	  VI6_RPF_DSWAP_P_WDS,
> +	  1, { 16, 0, 0 }, false, false, 1, 1, true },
> +#define V4L2_PIX_FMT_XBGR555 v4l2_fourcc('X', 'B', '1', '5') /* 16  XBGR-1-5-5-5  */
> +	{ V4L2_PIX_FMT_XBGR555, MEDIA_BUS_FMT_ARGB8888_1X32,
> +	  VI6_FMT_ABGR_1555, VI6_RPF_DSWAP_P_LLS | VI6_RPF_DSWAP_P_LWS |
> +	  VI6_RPF_DSWAP_P_WDS,
> +	  1, { 16, 0, 0 }, false, false, 1, 1, false },

Looks good, additional defines apart

> +#define V4L2_PIX_FMT_BGRA555 v4l2_fourcc('B', 'A', '1', '5') /* 16  BGRA-5-5-5-1  */
> +	{ V4L2_PIX_FMT_BGRA555, MEDIA_BUS_FMT_ARGB8888_1X32,
> +	  VI6_FMT_BGRA_5551, VI6_RPF_DSWAP_P_LLS | VI6_RPF_DSWAP_P_LWS |
> +	  VI6_RPF_DSWAP_P_WDS,
> +	  1, { 16, 0, 0 }, false, false, 1, 1, true },


As I read this:
V4L2_PIX_FMT_BGRA555            VI6_FMT_BGRA_5551        LLS|LWS|WDS
gggrrrrr abbbbbgg               bbbbbggg ggrrrrra       ggrrrrra bbbbbggg

They seems different to me:
        gggrrrrr abbbbbgg
        ggrrrrra bbbbbggg

But I have not find any better combination from table 23.10 that would
result in the desired 'gggrrrrr abbbbbgg' ordering.

> +#define V4L2_PIX_FMT_BGRX555 v4l2_fourcc('B', 'X', '1', '5') /* 16  BGRX-5-5-5-1  */
> +	{ V4L2_PIX_FMT_BGRX555, MEDIA_BUS_FMT_ARGB8888_1X32,
> +	  VI6_FMT_BGRA_5551, VI6_RPF_DSWAP_P_LLS | VI6_RPF_DSWAP_P_LWS |
> +	  VI6_RPF_DSWAP_P_WDS,
> +	  1, { 16, 0, 0 }, false, false, 1, 1, false },

Same as above.

The last two entries apart:
Reviewed-by: Jacopo Mondi <jacopo@jmondi.org>

Thanks
   j
>  	{ V4L2_PIX_FMT_RGB565, MEDIA_BUS_FMT_ARGB8888_1X32,
>  	  VI6_FMT_RGB_565, VI6_RPF_DSWAP_P_LLS | VI6_RPF_DSWAP_P_LWS |
>  	  VI6_RPF_DSWAP_P_WDS,
> --
> Regards,
>
> Laurent Pinchart
>