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author | Shashank Sharma <shashank.sharma@intel.com> | 2017-07-13 21:03:14 +0530 |
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committer | Ville Syrjälä <ville.syrjala@linux.intel.com> | 2017-07-14 21:23:54 +0300 |
commit | 2570fe2586254ff174c2ba5a20dabbde707dbb9b (patch) | |
tree | 444a8e531af25fa17f481868a17e9d9f567c2b24 /drivers/gpu/drm/drm_modes.c | |
parent | e6a9a2c3dc4377f62650faf1c978d073c55d62ec (diff) | |
download | linux-2570fe2586254ff174c2ba5a20dabbde707dbb9b.tar.gz linux-2570fe2586254ff174c2ba5a20dabbde707dbb9b.tar.bz2 linux-2570fe2586254ff174c2ba5a20dabbde707dbb9b.zip |
drm: add helper functions for YCBCR420 handling
This patch adds helper functions for YCBCR 420 handling.
These functions do:
- check if a given video mode is YCBCR 420 only mode.
- check if a given video mode is YCBCR 420 also mode.
V2: Added YCBCR functions as helpers in DRM layer, instead of
keeping it in I915 layer.
V3: Added handling for YCBCR-420 only modes too.
V4: EXPORT_SYMBOL(drm_find_hdmi_output_type)
V5: Addressed review comments from Danvet:
- %s/drm_find_hdmi_output_type/drm_display_info_hdmi_output_type
- %s/drm_can_support_ycbcr_output/drm_display_supports_ycbcr_output
- %s/drm_can_support_this_ycbcr_output/
drm_display_supports_this_ycbcr_output
- pass drm_display_info instead of drm_connector for consistency
- For drm_get_highest_quality_ycbcr_supported doc, move the variable
description above, and then the function description.
V6: Add only YCBCR420 helpers (Ville)
V7: Addressed review comments from Ville
- Remove cea_vic_valid() check.
- Fix indentation.
- Make input parameters to helpers, const.
Cc: Ville Syrjala <ville.syrjala@linux.intel.com>
Cc: Jose Abreu <Jose.Abreu@synopsys.com>
Cc: Daniel Vetter <daniel.vetter@intel.com>
Signed-off-by: Shashank Sharma <shashank.sharma@intel.com>
Link: http://patchwork.freedesktop.org/patch/msgid/1499960000-9232-9-git-send-email-shashank.sharma@intel.com
[vsyrjala: Fix sparse indentation warn]
Signed-off-by: Ville Syrjälä <ville.syrjala@linux.intel.com>
Diffstat (limited to 'drivers/gpu/drm/drm_modes.c')
-rw-r--r-- | drivers/gpu/drm/drm_modes.c | 58 |
1 files changed, 58 insertions, 0 deletions
diff --git a/drivers/gpu/drm/drm_modes.c b/drivers/gpu/drm/drm_modes.c index 35630b80cd48..c1aec532281c 100644 --- a/drivers/gpu/drm/drm_modes.c +++ b/drivers/gpu/drm/drm_modes.c @@ -1605,3 +1605,61 @@ int drm_mode_convert_umode(struct drm_display_mode *out, out: return ret; } + +/** + * drm_mode_is_420_only - if a given videomode can be only supported in YCBCR420 + * output format + * + * @connector: drm connector under action. + * @mode: video mode to be tested. + * + * Returns: + * true if the mode can be supported in YCBCR420 format + * false if not. + */ +bool drm_mode_is_420_only(const struct drm_display_info *display, + const struct drm_display_mode *mode) +{ + u8 vic = drm_match_cea_mode(mode); + + return test_bit(vic, display->hdmi.y420_vdb_modes); +} +EXPORT_SYMBOL(drm_mode_is_420_only); + +/** + * drm_mode_is_420_also - if a given videomode can be supported in YCBCR420 + * output format also (along with RGB/YCBCR444/422) + * + * @display: display under action. + * @mode: video mode to be tested. + * + * Returns: + * true if the mode can be support YCBCR420 format + * false if not. + */ +bool drm_mode_is_420_also(const struct drm_display_info *display, + const struct drm_display_mode *mode) +{ + u8 vic = drm_match_cea_mode(mode); + + return test_bit(vic, display->hdmi.y420_cmdb_modes); +} +EXPORT_SYMBOL(drm_mode_is_420_also); +/** + * drm_mode_is_420 - if a given videomode can be supported in YCBCR420 + * output format + * + * @display: display under action. + * @mode: video mode to be tested. + * + * Returns: + * true if the mode can be supported in YCBCR420 format + * false if not. + */ +bool drm_mode_is_420(const struct drm_display_info *display, + const struct drm_display_mode *mode) +{ + return drm_mode_is_420_only(display, mode) || + drm_mode_is_420_also(display, mode); +} +EXPORT_SYMBOL(drm_mode_is_420); |