Commit 9abecb1d authored by Thierry Reding's avatar Thierry Reding
Browse files

drm/format-helper: Support the AB24/XB24 formats 



Add a conversion helper for the AB24 and XB24 formats to use in
drm_fb_blit().

Reviewed-by: default avatarThomas Zimmermann <tzimmermann@suse.de>
Signed-off-by: default avatarThierry Reding <treding@nvidia.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20230120173103.4002342-7-thierry.reding@gmail.com
parent 9a10c7e6

drivers/gpu/drm/drm_format_helper.c

+66 −0
Original line number Diff line number Diff line
@@ -649,6 +649,66 @@ void drm_fb_xrgb8888_to_argb8888(struct iosys_map *dst, const unsigned int *dst_ 
}

EXPORT_SYMBOL(drm_fb_xrgb8888_to_argb8888);



static void drm_fb_xrgb8888_to_abgr8888_line(void *dbuf, const void *sbuf, unsigned int pixels)

{

	__le32 *dbuf32 = dbuf;

	const __le32 *sbuf32 = sbuf;

	unsigned int x;

	u32 pix;



	for (x = 0; x < pixels; x++) {

		pix = le32_to_cpu(sbuf32[x]);

		pix = ((pix & 0x00ff0000) >> 16) <<  0 |

		      ((pix & 0x0000ff00) >>  8) <<  8 |

		      ((pix & 0x000000ff) >>  0) << 16 |

		      GENMASK(31, 24); /* fill alpha bits */

		*dbuf32++ = cpu_to_le32(pix);

	}

}



static void drm_fb_xrgb8888_to_abgr8888(struct iosys_map *dst, const unsigned int *dst_pitch,

					const struct iosys_map *src,

					const struct drm_framebuffer *fb,

					const struct drm_rect *clip)

{

	static const u8 dst_pixsize[DRM_FORMAT_MAX_PLANES] = {

		4,

	};



	drm_fb_xfrm(dst, dst_pitch, dst_pixsize, src, fb, clip, false,

		    drm_fb_xrgb8888_to_abgr8888_line);

}



static void drm_fb_xrgb8888_to_xbgr8888_line(void *dbuf, const void *sbuf, unsigned int pixels)

{

	__le32 *dbuf32 = dbuf;

	const __le32 *sbuf32 = sbuf;

	unsigned int x;

	u32 pix;



	for (x = 0; x < pixels; x++) {

		pix = le32_to_cpu(sbuf32[x]);

		pix = ((pix & 0x00ff0000) >> 16) <<  0 |

		      ((pix & 0x0000ff00) >>  8) <<  8 |

		      ((pix & 0x000000ff) >>  0) << 16 |

		      ((pix & 0xff000000) >> 24) << 24;

		*dbuf32++ = cpu_to_le32(pix);

	}

}



static void drm_fb_xrgb8888_to_xbgr8888(struct iosys_map *dst, const unsigned int *dst_pitch,

					const struct iosys_map *src,

					const struct drm_framebuffer *fb,

					const struct drm_rect *clip)

{

	static const u8 dst_pixsize[DRM_FORMAT_MAX_PLANES] = {

		4,

	};



	drm_fb_xfrm(dst, dst_pitch, dst_pixsize, src, fb, clip, false,

		    drm_fb_xrgb8888_to_xbgr8888_line);

}



static void drm_fb_xrgb8888_to_xrgb2101010_line(void *dbuf, const void *sbuf, unsigned int pixels)

{

	__le32 *dbuf32 = dbuf;
@@ -868,6 +928,12 @@ int drm_fb_blit(struct iosys_map *dst, const unsigned int *dst_pitch, uint32_t d 
		} else if (dst_format == DRM_FORMAT_ARGB8888) {

			drm_fb_xrgb8888_to_argb8888(dst, dst_pitch, src, fb, clip);

			return 0;

		} else if (dst_format == DRM_FORMAT_XBGR8888) {

			drm_fb_xrgb8888_to_xbgr8888(dst, dst_pitch, src, fb, clip);

			return 0;

		} else if (dst_format == DRM_FORMAT_ABGR8888) {

			drm_fb_xrgb8888_to_abgr8888(dst, dst_pitch, src, fb, clip);

			return 0;

		} else if (dst_format == DRM_FORMAT_XRGB2101010) {

			drm_fb_xrgb8888_to_xrgb2101010(dst, dst_pitch, src, fb, clip);

			return 0;