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Commit 5cc4621a authored by Inki Dae's avatar Inki Dae
Browse files

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



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: default avatarInki Dae <inki.dae@samsung.com>
Reviewed-by: default avatarTomasz Figa <t.figa@samsung.com>
Signed-off-by: default avatarKyungmin Park <kyungmin.park@samsung.com>
parent a4f38a80

drivers/gpu/drm/exynos/exynos_drm_fimd.c

+11 −0
Original line number Diff line number Diff line
@@ -66,11 +66,13 @@ struct fimd_driver_data { 


	unsigned int has_shadowcon:1;

	unsigned int has_clksel:1;

	unsigned int has_limited_fmt:1;

};



static struct fimd_driver_data s3c64xx_fimd_driver_data = {

	.timing_base = 0x0,

	.has_clksel = 1,

	.has_limited_fmt = 1,

};



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;



	/*

	 * 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) {

	case DRM_FORMAT_C8:

		val |= WINCON0_BPPMODE_8BPP_PALETTE;