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drm: add drm_mode_cea_vic

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This function returns the VIC of the mode. This value can be used when
creating AVI InfoFrames.

Cc: Thierry Reding <thierry.reding@avionic-design.de>
Bugzilla: https://bugzilla.kernel.org/show_bug.cgi?id=50371
Signed-off-by: Paulo Zanoni <paulo.r.zanoni@intel.com>
Reviewed-by: Thierry Reding <thierry.reding@avionic-design.de>
Acked-by: Dave Airlie <airlied@gmail.com>
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
This commit is contained in:
Paulo Zanoni 2012-11-23 12:09:26 -02:00 committed by Daniel Vetter
parent 2ff4aeac39
commit 374a868a72
2 changed files with 20 additions and 0 deletions
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19
drivers/gpu/drm/drm_edid.c
View File

@ -2079,3 +2079,22 @@ int drm_add_modes_noedid(struct drm_connector *connector,
return num_modes;
}
EXPORT_SYMBOL(drm_add_modes_noedid);
/**
* drm_mode_cea_vic - return the CEA-861 VIC of a given mode
* @mode: mode
*
* RETURNS:
* The VIC number, 0 in case it's not a CEA-861 mode.
*/
uint8_t drm_mode_cea_vic(const struct drm_display_mode *mode)
{
uint8_t i;
for (i = 0; i < drm_num_cea_modes; i++)
if (drm_mode_equal(mode, &edid_cea_modes[i]))
return i + 1;
return 0;
}
EXPORT_SYMBOL(drm_mode_cea_vic);

1
include/drm/drm_crtc.h
View File

@ -1055,6 +1055,7 @@ extern struct drm_display_mode *drm_gtf_mode_complex(struct drm_device *dev,
int GTF_2C, int GTF_K, int GTF_2J);
extern int drm_add_modes_noedid(struct drm_connector *connector,
int hdisplay, int vdisplay);
extern uint8_t drm_mode_cea_vic(const struct drm_display_mode *mode);
extern int drm_edid_header_is_valid(const u8 *raw_edid);
extern bool drm_edid_block_valid(u8 *raw_edid, int block, bool print_bad_edid);