drm: add drm_mode_cea_vic
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>
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@ -2079,3 +2079,22 @@ int drm_add_modes_noedid(struct drm_connector *connector,
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return num_modes;
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}
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EXPORT_SYMBOL(drm_add_modes_noedid);
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/**
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* drm_mode_cea_vic - return the CEA-861 VIC of a given mode
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* @mode: mode
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*
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* RETURNS:
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* The VIC number, 0 in case it's not a CEA-861 mode.
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*/
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uint8_t drm_mode_cea_vic(const struct drm_display_mode *mode)
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{
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uint8_t i;
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for (i = 0; i < drm_num_cea_modes; i++)
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if (drm_mode_equal(mode, &edid_cea_modes[i]))
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return i + 1;
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return 0;
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}
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EXPORT_SYMBOL(drm_mode_cea_vic);
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@ -1055,6 +1055,7 @@ extern struct drm_display_mode *drm_gtf_mode_complex(struct drm_device *dev,
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int GTF_2C, int GTF_K, int GTF_2J);
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extern int drm_add_modes_noedid(struct drm_connector *connector,
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int hdisplay, int vdisplay);
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extern uint8_t drm_mode_cea_vic(const struct drm_display_mode *mode);
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extern int drm_edid_header_is_valid(const u8 *raw_edid);
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extern bool drm_edid_block_valid(u8 *raw_edid, int block, bool print_bad_edid);
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