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drm/exynos: check a pixel format to a particular window layer

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This patch checks if a requested window supports alpha channel or not.

In case of s3c64xx, window 0 doesn't support alpha channel so if
the request pixel format is ARGB8888 then change it to XRGB8888.

Signed-off-by: Inki Dae <inki.dae@samsung.com>
Reviewed-by: Tomasz Figa <t.figa@samsung.com>
Signed-off-by: Kyungmin Park <kyungmin.park@samsung.com>
This commit is contained in:
Inki Dae 2013-08-20 14:28:56 +09:00
parent a4f38a80f6
commit 5cc4621a17
1 changed files with 11 additions and 0 deletions
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11
drivers/gpu/drm/exynos/exynos_drm_fimd.c
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@ -66,11 +66,13 @@ struct fimd_driver_data {
unsigned int has_shadowcon:1; unsigned int has_shadowcon:1;
unsigned int has_clksel:1; unsigned int has_clksel:1;
unsigned int has_limited_fmt:1;
}; };
static struct fimd_driver_data s3c64xx_fimd_driver_data = { static struct fimd_driver_data s3c64xx_fimd_driver_data = {
.timing_base = 0x0, .timing_base = 0x0,
.has_clksel = 1, .has_clksel = 1,
.has_limited_fmt = 1,
}; };
static struct fimd_driver_data exynos4_fimd_driver_data = { static struct fimd_driver_data exynos4_fimd_driver_data = {
@ -420,6 +422,15 @@ static void fimd_win_set_pixfmt(struct device *dev, unsigned int win)
val = WINCONx_ENWIN; val = WINCONx_ENWIN;
/*
* In case of s3c64xx, window 0 doesn't support alpha channel.
* So the request format is ARGB8888 then change it to XRGB8888.
*/
if (ctx->driver_data->has_limited_fmt && !win) {
if (win_data->pixel_format == DRM_FORMAT_ARGB8888)
win_data->pixel_format = DRM_FORMAT_XRGB8888;
}
switch (win_data->pixel_format) { switch (win_data->pixel_format) {
case DRM_FORMAT_C8: case DRM_FORMAT_C8:
val |= WINCON0_BPPMODE_8BPP_PALETTE; val |= WINCON0_BPPMODE_8BPP_PALETTE;