>-----Original Message-----
>From: Intel-gfx <intel-gfx-boun...@lists.freedesktop.org> On Behalf Of Ville
>Syrjala
>Sent: Friday, October 4, 2019 7:49 PM
>To: dri-devel@lists.freedesktop.org
>Cc: intel-...@lists.freedesktop.org; Wayne Lin <wayne...@amd.com>
>Subject: [Intel-gfx] [PATCH 3/4] drm/edid: Fix HDMI VIC handling
>
>From: Ville Syrjälä <ville.syrj...@linux.intel.com>
>
>Extract drm_mode_hdmi_vic() to correctly calculate the final HDMI VIC for us.
>Currently this is being done a bit differently between the AVI and HDMI
>infoframes.
>Let's get both to agree on this.
>
>We need to allow the case where a mode is both 3D and has a HDMI VIC. Currently
>we'll just refuse to generate the HDMI infoframe when we really should be
>setting
>HDMI VIC to 0 and instead enabling 3D stereo signalling.
>
>If the sink doesn't even support the HDMI infoframe we should not be picking
>the
>HDMI VIC in favor of the CEA VIC, because then we'll end up not sending either
>VIC in
>the end.
Looks good to me.
Reviewed-by: Uma Shankar <uma.shan...@intel.com>
>Cc: Wayne Lin <wayne...@amd.com>
>Signed-off-by: Ville Syrjälä <ville.syrj...@linux.intel.com>
>---
> drivers/gpu/drm/drm_edid.c | 37 +++++++++++++++++++++----------------
> 1 file changed, 21 insertions(+), 16 deletions(-)
>
>diff --git a/drivers/gpu/drm/drm_edid.c b/drivers/gpu/drm/drm_edid.c index
>495b7fb4d9ef..c7f9f7ca75a2 100644
>--- a/drivers/gpu/drm/drm_edid.c
>+++ b/drivers/gpu/drm/drm_edid.c
>@@ -5160,11 +5160,25 @@ drm_hdmi_infoframe_set_hdr_metadata(struct
>hdmi_drm_infoframe *frame, }
>EXPORT_SYMBOL(drm_hdmi_infoframe_set_hdr_metadata);
>
>+static u8 drm_mode_hdmi_vic(struct drm_connector *connector,
>+ const struct drm_display_mode *mode) {
>+ bool has_hdmi_infoframe = connector ?
>+ connector->display_info.has_hdmi_infoframe : false;
>+
>+ if (!has_hdmi_infoframe)
>+ return 0;
>+
>+ /* No HDMI VIC when signalling 3D video format */
>+ if (mode->flags & DRM_MODE_FLAG_3D_MASK)
>+ return 0;
>+
>+ return drm_match_hdmi_mode(mode);
>+}
>+
> static u8 drm_mode_cea_vic(struct drm_connector *connector,
> const struct drm_display_mode *mode) {
>- u8 vendor_if_vic = drm_match_hdmi_mode(mode);
>- bool is_s3d = mode->flags & DRM_MODE_FLAG_3D_MASK;
> u8 vic;
>
> /*
>@@ -5173,7 +5187,7 @@ static u8 drm_mode_cea_vic(struct drm_connector
>*connector,
> * VIC in AVI infoframes. Lets check if this mode is present in
> * HDMI 1.4b 4K modes
> */
>- if (drm_valid_hdmi_vic(vendor_if_vic) && !is_s3d)
>+ if (drm_mode_hdmi_vic(connector, mode))
> return 0;
>
> vic = drm_match_cea_mode(mode);
>@@ -5433,8 +5447,6 @@ drm_hdmi_vendor_infoframe_from_display_mode(struct
>hdmi_vendor_infoframe *frame,
> bool has_hdmi_infoframe = connector ?
> connector->display_info.has_hdmi_infoframe : false;
> int err;
>- u32 s3d_flags;
>- u8 vic;
>
> if (!frame || !mode)
> return -EINVAL;
>@@ -5442,8 +5454,9 @@ drm_hdmi_vendor_infoframe_from_display_mode(struct
>hdmi_vendor_infoframe *frame,
> if (!has_hdmi_infoframe)
> return -EINVAL;
>
>- vic = drm_match_hdmi_mode(mode);
>- s3d_flags = mode->flags & DRM_MODE_FLAG_3D_MASK;
>+ err = hdmi_vendor_infoframe_init(frame);
>+ if (err < 0)
>+ return err;
>
> /*
> * Even if it's not absolutely necessary to send the infoframe @@
> -5454,15
>+5467,7 @@ drm_hdmi_vendor_infoframe_from_display_mode(struct
>hdmi_vendor_infoframe *frame,
> * mode if the source simply stops sending the infoframe when
> * it wants to switch from 3D to 2D.
> */
>-
>- if (vic && s3d_flags)
>- return -EINVAL;
>-
>- err = hdmi_vendor_infoframe_init(frame);
>- if (err < 0)
>- return err;
>-
>- frame->vic = vic;
>+ frame->vic = drm_mode_hdmi_vic(connector, mode);
> frame->s3d_struct = s3d_structure_from_display_mode(mode);
>
> return 0;
>--
>2.21.0
>
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