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authorVille Syrjälä <ville.syrjala@linux.intel.com>2017-01-11 14:57:24 +0200
committerVille Syrjälä <ville.syrjala@linux.intel.com>2017-01-26 18:37:13 +0200
commit779c4c2866150c1e5518d703b747f794f91f044c (patch)
tree95f70bfa6e8b22f4972134e19aa7ba5065fb1b81 /drivers/gpu/drm/i915/intel_hdmi.c
parenta2ce26f815b16500d390fc46381ec770192a5fbe (diff)
drm/edid: Set AVI infoframe Q even when QS=0
HDMI 2.0 recommends that we set the Q bits in the AVI infoframe even when the sink does not support quantization range selection (QS=0). According to CEA-861 we can do that as long as the Q we send matches the default quantization range for the mode. Previously I think I had misread the spec as saying that you can't send a non-zero Q at all when QS=0. But that's not what the spec actually says. v2: Fix typo in commit message (Jani) Signed-off-by: Ville Syrjälä <ville.syrjala@linux.intel.com> Link: http://patchwork.freedesktop.org/patch/msgid/20170111125725.8086-5-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/i915/intel_hdmi.c')
-rw-r--r--drivers/gpu/drm/i915/intel_hdmi.c6
1 files changed, 4 insertions, 2 deletions
diff --git a/drivers/gpu/drm/i915/intel_hdmi.c b/drivers/gpu/drm/i915/intel_hdmi.c
index 351f837b09a0..af16b0fa6b69 100644
--- a/drivers/gpu/drm/i915/intel_hdmi.c
+++ b/drivers/gpu/drm/i915/intel_hdmi.c
@@ -455,17 +455,19 @@ static void intel_hdmi_set_avi_infoframe(struct drm_encoder *encoder,
const struct intel_crtc_state *crtc_state)
{
struct intel_hdmi *intel_hdmi = enc_to_intel_hdmi(encoder);
+ const struct drm_display_mode *adjusted_mode =
+ &crtc_state->base.adjusted_mode;
union hdmi_infoframe frame;
int ret;
ret = drm_hdmi_avi_infoframe_from_display_mode(&frame.avi,
- &crtc_state->base.adjusted_mode);
+ adjusted_mode);
if (ret < 0) {
DRM_ERROR("couldn't fill AVI infoframe\n");
return;
}
- drm_hdmi_avi_infoframe_quant_range(&frame.avi,
+ drm_hdmi_avi_infoframe_quant_range(&frame.avi, adjusted_mode,
crtc_state->limited_color_range ?
HDMI_QUANTIZATION_RANGE_LIMITED :
HDMI_QUANTIZATION_RANGE_FULL,