Hi Gustavo,
On 03/19/2015 11:27 PM, Gustavo Padovan wrote:
> From: Gustavo Padovan <gustavo.padovan@xxxxxxxxxxxxxxx>
>
> Change the switch to use the pixel_format instead of bpp to figure out
> if we need to enable or disable the layer blending.
>
The default concept is ok about enable or disable of pixel blending
feature by pixel_format, but it will make to possible blending with
background layer. I'm not sure whether it's proper or not.
Thanks.
> Signed-off-by: Gustavo Padovan <gustavo.padovan@xxxxxxxxxxxxxxx>
> ---
> drivers/gpu/drm/exynos/exynos_mixer.c | 29 +++++++++++++++++++++++++----
> 1 file changed, 25 insertions(+), 4 deletions(-)
>
> diff --git a/drivers/gpu/drm/exynos/exynos_mixer.c b/drivers/gpu/drm/exynos/exynos_mixer.c
> index 7aff88f..0c54098 100644
> --- a/drivers/gpu/drm/exynos/exynos_mixer.c
> +++ b/drivers/gpu/drm/exynos/exynos_mixer.c
> @@ -529,7 +529,7 @@ static void mixer_graph_buffer(struct mixer_context *ctx, int win)
> unsigned int x_ratio, y_ratio;
> unsigned int src_x_offset, src_y_offset, dst_x_offset, dst_y_offset;
> dma_addr_t dma_addr;
> - unsigned int fmt;
> + unsigned int fmt, blend;
> u32 val;
>
> win_data = &ctx->win_data[win];
> @@ -539,15 +539,26 @@ static void mixer_graph_buffer(struct mixer_context *ctx, int win)
> #define ARGB4444 6
> #define ARGB8888 7
>
> - switch (win_data->bpp) {
> - case 16:
> + switch (win_data->pixel_format) {
> + case DRM_FORMAT_ARGB4444:
> fmt = ARGB4444;
> + blend = 1;
> break;
> - case 32:
> +
> + case DRM_FORMAT_ARGB8888:
> + fmt = ARGB8888;
> + blend = 1;
> + break;
> +
> + case DRM_FORMAT_XRGB8888:
> fmt = ARGB8888;
> + blend = 0;
> break;
> +
> default:
> fmt = ARGB8888;
> + blend = 0;
> + break;
> }
>
> if (win_data->crtc_width != win_data->src_width ||
> @@ -586,6 +597,16 @@ static void mixer_graph_buffer(struct mixer_context *ctx, int win)
> mixer_reg_write(res, MXR_GRAPHIC_SPAN(win),
> win_data->fb_pitch / (win_data->bpp >> 3));
>
> + if (blend) {
> + val = MXR_GRP_CFG_BLEND_PRE_MUL;
> + val |= MXR_GRP_CFG_PIXEL_BLEND_EN;
> + } else {
> + val = 0;
> + }
> + mixer_reg_writemask(res, MXR_GRAPHIC_CFG(win), val,
> + MXR_GRP_CFG_BLEND_PRE_MUL
> + | MXR_GRP_CFG_PIXEL_BLEND_EN);
> +
> /* setup display size */
> if (ctx->mxr_ver == MXR_VER_128_0_0_184 &&
> win == MIXER_DEFAULT_WIN) {
>
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