When scanning out a 3D mode on HDMI, we need to send an HDMI infoframe with the corresponding layout to the sink.
Signed-off-by: Damien Lespiau damien.lespiau@intel.com --- drivers/gpu/drm/drm_edid.c | 25 +++++++++++++++++++++++-- 1 file changed, 23 insertions(+), 2 deletions(-)
diff --git a/drivers/gpu/drm/drm_edid.c b/drivers/gpu/drm/drm_edid.c index 9d9881b..8a1ae56 100644 --- a/drivers/gpu/drm/drm_edid.c +++ b/drivers/gpu/drm/drm_edid.c @@ -3325,6 +3325,18 @@ drm_hdmi_avi_infoframe_from_display_mode(struct hdmi_avi_infoframe *frame, } EXPORT_SYMBOL(drm_hdmi_avi_infoframe_from_display_mode);
+static enum hdmi_3d_structure +s3d_structure_from_display_mode(const struct drm_display_mode *mode) +{ + u32 s3d_mode = (mode->flags & DRM_MODE_FLAG_3D_MASK) >> 14; + int set = ffs(s3d_mode) - 1; + + if (set == 7) + return HDMI_3D_STRUCTURE_SIDE_BY_SIDE_HALF; + + return set; +} + /** * drm_hdmi_vendor_infoframe_from_display_mode() - fill an HDMI infoframe with * data from a DRM display mode @@ -3342,20 +3354,29 @@ drm_hdmi_vendor_infoframe_from_display_mode(struct hdmi_vendor_infoframe *frame, const struct drm_display_mode *mode) { int err; + u32 s3d_flags; u8 vic;
if (!frame || !mode) return -EINVAL;
vic = drm_match_hdmi_mode(mode); - if (!vic) + s3d_flags = mode->flags & DRM_MODE_FLAG_3D_MASK; + + if (!vic && !s3d_flags) + return -EINVAL; + + if (vic && s3d_flags) return -EINVAL;
err = hdmi_vendor_infoframe_init(frame); if (err < 0) return err;
- frame->vic = vic; + if (vic) + frame->vic = vic; + else + frame->s3d_struct = s3d_structure_from_display_mode(mode);
return 0; }