diff options
| author | Ville Syrjälä <ville.syrjala@linux.intel.com> | 2017-01-11 16:18:35 +0200 |
|---|---|---|
| committer | Ville Syrjälä <ville.syrjala@linux.intel.com> | 2017-01-26 18:37:13 +0200 |
| commit | c8127cf08ab9797c3954df463741ac47039d2b55 (patch) | |
| tree | b447523600b9d128e7d25117cf054c783a017d3c /drivers/gpu/drm/drm_edid.c | |
| parent | 00147934598478f7fbd0a4ce5380f2fecad542b5 (diff) | |
drm/edid: Introduce drm_default_rgb_quant_range()
Make the code selecting the RGB quantization range a little less magicy
by wrapping it up in a small helper.
v2: s/adjusted_mode/mode in vc4 to make it actually compile
v3: Add a comment proposed by Eric
Signed-off-by: Ville Syrjälä <ville.syrjala@linux.intel.com>
Link: http://patchwork.freedesktop.org/patch/msgid/20170111141835.25369-1-ville.syrjala@linux.intel.com
Reviewed-by: Jani Nikula <jani.nikula@intel.com>
Acked-by: Eric Anholt <eric@anholt.net>
Diffstat (limited to 'drivers/gpu/drm/drm_edid.c')
| -rw-r--r-- | drivers/gpu/drm/drm_edid.c | 19 |
1 files changed, 19 insertions, 0 deletions
diff --git a/drivers/gpu/drm/drm_edid.c b/drivers/gpu/drm/drm_edid.c index 4ff04aa84dd0..9d0a506fc8ff 100644 --- a/drivers/gpu/drm/drm_edid.c +++ b/drivers/gpu/drm/drm_edid.c @@ -3768,6 +3768,25 @@ bool drm_rgb_quant_range_selectable(struct edid *edid) } EXPORT_SYMBOL(drm_rgb_quant_range_selectable); +/** + * drm_default_rgb_quant_range - default RGB quantization range + * @mode: display mode + * + * Determine the default RGB quantization range for the mode, + * as specified in CEA-861. + * + * Return: The default RGB quantization range for the mode + */ +enum hdmi_quantization_range +drm_default_rgb_quant_range(const struct drm_display_mode *mode) +{ + /* All CEA modes other than VIC 1 use limited quantization range. */ + return drm_match_cea_mode(mode) > 1 ? + HDMI_QUANTIZATION_RANGE_LIMITED : + HDMI_QUANTIZATION_RANGE_FULL; +} +EXPORT_SYMBOL(drm_default_rgb_quant_range); + static void drm_parse_hdmi_deep_color_info(struct drm_connector *connector, const u8 *hdmi) { |