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drm: parse color format support for digital displays

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EDID 1.4 digital displays report the color spaces they support in the
features block.  Add support for grabbing this data and stuffing it into
the display_info struct for driver use.

Signed-off-by: Jesse Barnes <jbarnes@virtuousgeek.org>
Reviewed-by: Alex Deucher <alexdeucher@gmail.com>
Signed-off-by: Dave Airlie <airlied@redhat.com>
This commit is contained in:
Jesse Barnes 2011-04-15 13:48:57 -07:00 committed by Dave Airlie
parent 3b11228b54
commit da05a5a71a
3 changed files with 19 additions and 1 deletions
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7
drivers/gpu/drm/drm_edid.c
View File

@ -1429,6 +1429,7 @@ static void drm_add_display_info(struct edid *edid,
/* driver figures it out in this case */ /* driver figures it out in this case */
info->bpc = 0; info->bpc = 0;
info->color_formats = 0;
/* Only defined for 1.4 with digital displays */ /* Only defined for 1.4 with digital displays */
if (edid->revision < 4) if (edid->revision < 4)
@ -1461,6 +1462,12 @@ static void drm_add_display_info(struct edid *edid,
info->bpc = 0; info->bpc = 0;
break; break;
} }
info->color_formats = DRM_COLOR_FORMAT_RGB444;
if (info->color_formats & DRM_EDID_FEATURE_RGB_YCRCB444)
info->color_formats = DRM_COLOR_FORMAT_YCRCB444;
if (info->color_formats & DRM_EDID_FEATURE_RGB_YCRCB422)
info->color_formats = DRM_COLOR_FORMAT_YCRCB422;
} }
/** /**

5
include/drm/drm_crtc.h
View File

@ -183,7 +183,9 @@ enum subpixel_order {
SubPixelNone, SubPixelNone,
}; };
#define DRM_COLOR_FORMAT_RGB444 (1<<0)
#define DRM_COLOR_FORMAT_YCRCB444 (1<<1)
#define DRM_COLOR_FORMAT_YCRCB422 (1<<2)
/* /*
* Describes a given display (e.g. CRT or flat panel) and its limitations. * Describes a given display (e.g. CRT or flat panel) and its limitations.
*/ */
@ -201,6 +203,7 @@ struct drm_display_info {
unsigned int bpc; unsigned int bpc;
enum subpixel_order subpixel_order; enum subpixel_order subpixel_order;
u32 color_formats;
char *raw_edid; /* if any */ char *raw_edid; /* if any */
}; };

8
include/drm/drm_edid.h
View File

@ -175,7 +175,15 @@ struct detailed_timing {
#define DRM_EDID_FEATURE_DEFAULT_GTF (1 << 0) #define DRM_EDID_FEATURE_DEFAULT_GTF (1 << 0)
#define DRM_EDID_FEATURE_PREFERRED_TIMING (1 << 1) #define DRM_EDID_FEATURE_PREFERRED_TIMING (1 << 1)
#define DRM_EDID_FEATURE_STANDARD_COLOR (1 << 2) #define DRM_EDID_FEATURE_STANDARD_COLOR (1 << 2)
/* If analog */
#define DRM_EDID_FEATURE_DISPLAY_TYPE (3 << 3) /* 00=mono, 01=rgb, 10=non-rgb, 11=unknown */ #define DRM_EDID_FEATURE_DISPLAY_TYPE (3 << 3) /* 00=mono, 01=rgb, 10=non-rgb, 11=unknown */
/* If digital */
#define DRM_EDID_FEATURE_COLOR_MASK (3 << 3)
#define DRM_EDID_FEATURE_RGB (0 << 3)
#define DRM_EDID_FEATURE_RGB_YCRCB444 (1 << 3)
#define DRM_EDID_FEATURE_RGB_YCRCB422 (2 << 3)
#define DRM_EDID_FEATURE_RGB_YCRCB (3 << 3) /* both 4:4:4 and 4:2:2 */
#define DRM_EDID_FEATURE_PM_ACTIVE_OFF (1 << 5) #define DRM_EDID_FEATURE_PM_ACTIVE_OFF (1 << 5)
#define DRM_EDID_FEATURE_PM_SUSPEND (1 << 6) #define DRM_EDID_FEATURE_PM_SUSPEND (1 << 6)
#define DRM_EDID_FEATURE_PM_STANDBY (1 << 7) #define DRM_EDID_FEATURE_PM_STANDBY (1 << 7)