diff options
Diffstat (limited to 'drivers/gpu/drm/drm_edid.c')
| -rw-r--r-- | drivers/gpu/drm/drm_edid.c | 34 |
1 files changed, 28 insertions, 6 deletions
diff --git a/drivers/gpu/drm/drm_edid.c b/drivers/gpu/drm/drm_edid.c index 749d07a01772..9ada0ccf50df 100644 --- a/drivers/gpu/drm/drm_edid.c +++ b/drivers/gpu/drm/drm_edid.c @@ -3393,6 +3393,7 @@ static int do_hdmi_vsdb_modes(struct drm_connector *connector, const u8 *db, u8 len, const u8 *video_db, u8 video_len) { + struct drm_display_info *info = &connector->display_info; int modes = 0, offset = 0, i, multi_present = 0, multi_len; u8 vic_len, hdmi_3d_len = 0; u16 mask; @@ -3520,6 +3521,8 @@ do_hdmi_vsdb_modes(struct drm_connector *connector, const u8 *db, u8 len, } out: + if (modes > 0) + info->has_hdmi_infoframe = true; return modes; } @@ -4243,6 +4246,8 @@ static void drm_parse_hdmi_forum_vsdb(struct drm_connector *connector, struct drm_display_info *display = &connector->display_info; struct drm_hdmi_info *hdmi = &display->hdmi; + display->has_hdmi_infoframe = true; + if (hf_vsdb[6] & 0x80) { hdmi->scdc.supported = true; if (hf_vsdb[6] & 0x40) @@ -4416,6 +4421,7 @@ static void drm_add_display_info(struct drm_connector *connector, info->cea_rev = 0; info->max_tmds_clock = 0; info->dvi_dual = false; + info->has_hdmi_infoframe = false; if (edid->revision < 3) return; @@ -4903,6 +4909,7 @@ s3d_structure_from_display_mode(const struct drm_display_mode *mode) * drm_hdmi_vendor_infoframe_from_display_mode() - fill an HDMI infoframe with * data from a DRM display mode * @frame: HDMI vendor infoframe + * @connector: the connector * @mode: DRM display mode * * Note that there's is a need to send HDMI vendor infoframes only when using a @@ -4913,8 +4920,15 @@ s3d_structure_from_display_mode(const struct drm_display_mode *mode) */ int drm_hdmi_vendor_infoframe_from_display_mode(struct hdmi_vendor_infoframe *frame, + struct drm_connector *connector, const struct drm_display_mode *mode) { + /* + * FIXME: sil-sii8620 doesn't have a connector around when + * we need one, so we have to be prepared for a NULL connector. + */ + bool has_hdmi_infoframe = connector ? + connector->display_info.has_hdmi_infoframe : false; int err; u32 s3d_flags; u8 vic; @@ -4922,11 +4936,21 @@ drm_hdmi_vendor_infoframe_from_display_mode(struct hdmi_vendor_infoframe *frame, if (!frame || !mode) return -EINVAL; + if (!has_hdmi_infoframe) + return -EINVAL; + vic = drm_match_hdmi_mode(mode); s3d_flags = mode->flags & DRM_MODE_FLAG_3D_MASK; - if (!vic && !s3d_flags) - return -EINVAL; + /* + * Even if it's not absolutely necessary to send the infoframe + * (ie.vic==0 and s3d_struct==0) we will still send it if we + * know that the sink can handle it. This is based on a + * suggestion in HDMI 2.0 Appendix F. Apparently some sinks + * have trouble realizing that they shuld switch from 3D to 2D + * mode if the source simply stops sending the infoframe when + * it wants to switch from 3D to 2D. + */ if (vic && s3d_flags) return -EINVAL; @@ -4935,10 +4959,8 @@ drm_hdmi_vendor_infoframe_from_display_mode(struct hdmi_vendor_infoframe *frame, if (err < 0) return err; - if (vic) - frame->vic = vic; - else - frame->s3d_struct = s3d_structure_from_display_mode(mode); + frame->vic = vic; + frame->s3d_struct = s3d_structure_from_display_mode(mode); return 0; } |