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authorShashank Sharma <shashank.sharma@intel.com>2017-07-13 21:03:11 +0530
committerVille Syrjälä <ville.syrjala@linux.intel.com>2017-07-14 21:23:54 +0300
commitd85231530b0719e23a62d92ee35712da966e281a (patch)
tree212d5c9517129103012fe4d04338d766702b58c1 /drivers/gpu/drm/drm_probe_helper.c
parent87563fc0301f44f7a37ecba9490a60507ae9bbf2 (diff)
drm: add helper to validate YCBCR420 modes
YCBCR420 modes are supported only on HDMI 2.0 capable sources. This patch adds: - A drm helper to validate YCBCR420-only mode on a particular connector. This function will help pruning the YCBCR420-only modes from the connector's modelist. - A bool variable (ycbcr_420_allowed) in the drm connector structure. While handling the EDID from HDMI 2.0 sinks, its important to know if the source is capable of handling YCBCR420 output, so that no YCBCR 420 modes will be listed for sources which can't handle it. A driver should set this variable if it wants to see YCBCR420 modes in the modedb. V5: Introduced the patch in series. V6: Squashed two patches (validate YCBCR420 and add YCBCR420 identifier) V7: Addressed review comments from Vile: - Move this patch before we add 420 modes from EDID. - No need for drm_valid_cea_vic() check, function back to non-static. - Update MODE_STATUS with NO_420 condition. - Introduce y420_vdb_modes variable in this patch Cc: Ville Syrjala <ville.syrjala@linux.intel.com> Signed-off-by: Shashank Sharma <shashank.sharma@intel.com> Link: http://patchwork.freedesktop.org/patch/msgid/1499960000-9232-6-git-send-email-shashank.sharma@intel.com [vsyrjala: Drop the now bogus EXPORT_SYMBOL(drm_valid_cea_vic)] Signed-off-by: Ville Syrjälä <ville.syrjala@linux.intel.com>
Diffstat (limited to 'drivers/gpu/drm/drm_probe_helper.c')
-rw-r--r--drivers/gpu/drm/drm_probe_helper.c4
1 files changed, 4 insertions, 0 deletions
diff --git a/drivers/gpu/drm/drm_probe_helper.c b/drivers/gpu/drm/drm_probe_helper.c
index 00e6832a8c1a..904966cde32b 100644
--- a/drivers/gpu/drm/drm_probe_helper.c
+++ b/drivers/gpu/drm/drm_probe_helper.c
@@ -528,6 +528,10 @@ retry:
if (mode->status == MODE_OK)
mode->status = drm_mode_validate_pipeline(mode,
connector);
+
+ if (mode->status == MODE_OK)
+ mode->status = drm_mode_validate_ycbcr420(mode,
+ connector);
}
prune: