diff options
Diffstat (limited to 'drivers/gpu/drm/drm_edid.c')
| -rw-r--r-- | drivers/gpu/drm/drm_edid.c | 26 |
1 files changed, 25 insertions, 1 deletions
diff --git a/drivers/gpu/drm/drm_edid.c b/drivers/gpu/drm/drm_edid.c index 2e55599816aa..0667b0744b17 100644 --- a/drivers/gpu/drm/drm_edid.c +++ b/drivers/gpu/drm/drm_edid.c @@ -4334,12 +4334,14 @@ EXPORT_SYMBOL(drm_set_preferred_mode); * data from a DRM display mode * @frame: HDMI AVI infoframe * @mode: DRM display mode + * @is_hdmi2_sink: Sink is HDMI 2.0 compliant * * Return: 0 on success or a negative error code on failure. */ int drm_hdmi_avi_infoframe_from_display_mode(struct hdmi_avi_infoframe *frame, - const struct drm_display_mode *mode) + const struct drm_display_mode *mode, + bool is_hdmi2_sink) { int err; @@ -4355,6 +4357,28 @@ drm_hdmi_avi_infoframe_from_display_mode(struct hdmi_avi_infoframe *frame, frame->video_code = drm_match_cea_mode(mode); + /* + * HDMI 1.4 VIC range: 1 <= VIC <= 64 (CEA-861-D) but + * HDMI 2.0 VIC range: 1 <= VIC <= 107 (CEA-861-F). So we + * have to make sure we dont break HDMI 1.4 sinks. + */ + if (!is_hdmi2_sink && frame->video_code > 64) + frame->video_code = 0; + + /* + * HDMI spec says if a mode is found in HDMI 1.4b 4K modes + * we should send its VIC in vendor infoframes, else send the + * VIC in AVI infoframes. Lets check if this mode is present in + * HDMI 1.4b 4K modes + */ + if (frame->video_code) { + u8 vendor_if_vic = drm_match_hdmi_mode(mode); + bool is_s3d = mode->flags & DRM_MODE_FLAG_3D_MASK; + + if (drm_valid_hdmi_vic(vendor_if_vic) && !is_s3d) + frame->video_code = 0; + } + frame->picture_aspect = HDMI_PICTURE_ASPECT_NONE; /* |