Hi Tobias,
On 04/23/2015 09:12 PM, Tobias Jakobi wrote:
> Move the defines for the pixelformats that the mixer supports out
> of mixer_graph_buffer() to the top of the source.
> Then select the mixer pixelformat (pf) in mixer_graph_buffer() based on
> the plane's pf (and not bpp).
> Also add handling of RGB565 and XRGB1555 to the switch statement and
> exit early if the plane has an unsupported pf.
>
> Partially based on 'drm/exynos: enable/disable blend based on pixel
> format' by Gustavo Padovan <gustavo.padovan at collabora.co.uk>.
>
> Signed-off-by: Tobias Jakobi <tjakobi at math.uni-bielefeld.de>
> ---
> drivers/gpu/drm/exynos/exynos_mixer.c | 32 ++++++++++++++++++++++----------
> 1 file changed, 22 insertions(+), 10 deletions(-)
>
> diff --git a/drivers/gpu/drm/exynos/exynos_mixer.c
> b/drivers/gpu/drm/exynos/exynos_mixer.c
> index fbec750..1bd23ee 100644
> --- a/drivers/gpu/drm/exynos/exynos_mixer.c
> +++ b/drivers/gpu/drm/exynos/exynos_mixer.c
> @@ -44,6 +44,12 @@
> #define MIXER_WIN_NR 3
> #define MIXER_DEFAULT_WIN 0
>
> +/* The pixelformats that are natively supported by the mixer. */
> +#define MIXER_PIXELFORMAT_RGB565 4
> +#define MIXER_PIXELFORMAT_ARGB1555 5
> +#define MIXER_PIXELFORMAT_ARGB4444 6
> +#define MIXER_PIXELFORMAT_ARGB8888 7
> +
Seems be long, how about s/PIXELFORMAT/FORMAT or just MIXER_RGB565 ... ?
Please use tab between define name and value.
> struct mixer_resources {
> int irq;
> void __iomem *mixer_regs;
> @@ -531,20 +537,26 @@ static void mixer_graph_buffer(struct mixer_context
> *ctx, int win)
>
> plane = &ctx->planes[win];
>
> - #define RGB565 4
> - #define ARGB1555 5
> - #define ARGB4444 6
> - #define ARGB8888 7
> + switch (plane->pixel_format) {
> + case DRM_FORMAT_XRGB4444:
> + fmt = MIXER_PIXELFORMAT_ARGB4444;
> + break;
> +
> + case DRM_FORMAT_XRGB1555:
> + fmt = MIXER_PIXELFORMAT_ARGB1555;
> + break;
>
> - switch (plane->bpp) {
> - case 16:
> - fmt = ARGB4444;
> + case DRM_FORMAT_RGB565:
> + fmt = MIXER_PIXELFORMAT_RGB565;
> break;
> - case 32:
> - fmt = ARGB8888;
> +
> + case DRM_FORMAT_XRGB8888:
> + fmt = MIXER_PIXELFORMAT_ARGB8888;
> break;
> +
> default:
> - fmt = ARGB8888;
> + DRM_DEBUG_KMS("pixelformat unsupported by mixer\n");
> + return;
> }
>
> /* check if mixer supports requested scaling setup */
>
Hmm missing formats having alpha?
DRM_FORMAT_ARGB4444
DRM_FORMAT_ARGB1555
DRM_FORMAT_ARGB8888
Thanks.
