diff --git a/drivers/gpu/drm/drm_edid.c b/drivers/gpu/drm/drm_edid.c index 8c9ac021608f..5fedff1f5d50 100644 --- a/drivers/gpu/drm/drm_edid.c +++ b/drivers/gpu/drm/drm_edid.c @@ -3073,6 +3073,21 @@ static bool cea_db_is_hdmi_vsdb(const u8 *db) return hdmi_id == HDMI_IEEE_OUI; } +static bool cea_db_is_hdmi_hf_vsdb(const u8 *db) +{ + int hdmi_id; + + if (cea_db_tag(db) != VENDOR_BLOCK) + return false; + + if (cea_db_payload_len(db) < 7) + return false; + + hdmi_id = db[1] | (db[2] << 8) | (db[3] << 16); + + return hdmi_id == HDMI_IEEE_OUI_HF; +} + #define for_each_cea_db(cea, i, start, end) \ for ((i) = (start); (i) < (end) && (i) + cea_db_payload_len(&(cea)[(i)]) < (end); (i) += cea_db_payload_len(&(cea)[(i)]) + 1) @@ -3195,6 +3210,36 @@ parse_hdmi_vsdb(struct drm_connector *connector, const u8 *db) connector->audio_latency[1]); } +static void +parse_hdmi_hf_vsdb(struct drm_connector *connector, const u8 *db) +{ + u8 len = cea_db_payload_len(db); + + if (len < 7) + return; + + if (db[4] != 1) + return; /* invalid version */ + + connector->max_tmds_char = db[5] * 5; + connector->scdc_present = db[6] & (1 << 7); + connector->rr_capable = db[6] & (1 << 6); + connector->flags_3d = db[6] & 0x7; + connector->lte_340mcsc_scramble = db[6] & (1 << 3); + + DRM_DEBUG_KMS("HDMI v2: max TMDS clock %d, " + "scdc %s, " + "rr %s, " + "3D flags 0x%x, " + "scramble %s\n", + connector->max_tmds_char, + connector->scdc_present ? "available" : "not available", + connector->rr_capable ? "capable" : "not capable", + connector->flags_3d, + connector->lte_340mcsc_scramble ? + "supported" : "not supported"); +} + static void monitor_name(struct detailed_timing *t, void *data) { @@ -3274,6 +3319,9 @@ void drm_edid_to_eld(struct drm_connector *connector, struct edid *edid) /* HDMI Vendor-Specific Data Block */ if (cea_db_is_hdmi_vsdb(db)) parse_hdmi_vsdb(connector, db); + /* HDMI Forum Vendor-Specific Data Block */ + else if (cea_db_is_hdmi_hf_vsdb(db)) + parse_hdmi_hf_vsdb(connector, db); break; default: break; diff --git a/include/drm/drm_crtc.h b/include/drm/drm_crtc.h index a9e50f0cae93..1bf21931d42f 100644 --- a/include/drm/drm_crtc.h +++ b/include/drm/drm_crtc.h @@ -725,6 +725,11 @@ struct drm_encoder { * @audio_latency: audio latency info from ELD, if found * @null_edid_counter: track sinks that give us all zeros for the EDID * @bad_edid_counter: track sinks that give us an EDID with invalid checksum + * @max_tmds_char: indicates the maximum TMDS Character Rate supported + * @scdc_present: when set the sink supports SCDC functionality + * @rr_capable: when set the sink is capable of initiating an SCDC read request + * @lte_340mcsc_scramble: when set the sink supports less than 340Mcsc scramble + * @flags_3d: 3D view(s) supported by the sink, see drm_edid.h (DRM_EDID_3D_*) * @edid_corrupt: indicates whether the last read EDID was corrupt * @debugfs_entry: debugfs directory for this connector * @state: current atomic state for this connector @@ -800,6 +805,13 @@ struct drm_connector { int null_edid_counter; /* needed to workaround some HW bugs where we get all 0s */ unsigned bad_edid_counter; + /* EDID bits HDMI 2.0 */ + int max_tmds_char; /* in Mcsc */ + bool scdc_present; + bool rr_capable; + bool lte_340mcsc_scramble; + int flags_3d; + /* Flag for raw EDID header corruption - used in Displayport * compliance testing - * Displayport Link CTS Core 1.2 rev1.1 4.2.2.6 */ diff --git a/include/drm/drm_edid.h b/include/drm/drm_edid.h index 2af97691e878..4317ea41382f 100644 --- a/include/drm/drm_edid.h +++ b/include/drm/drm_edid.h @@ -266,6 +266,11 @@ struct detailed_timing { #define DRM_ELD_CEA_SAD(mnl, sad) (20 + (mnl) + 3 * (sad)) +/* HDMI 2.0 */ +#define DRM_EDID_3D_INDEPENDENT_VIEW (1 << 2) +#define DRM_EDID_3D_DUAL_VIEW (1 << 1) +#define DRM_EDID_3D_OSD_DISPARITY (1 << 0) + struct edid { u8 header[8]; /* Vendor & product info */ diff --git a/include/linux/hdmi.h b/include/linux/hdmi.h index e9744202fa29..6e234093d435 100644 --- a/include/linux/hdmi.h +++ b/include/linux/hdmi.h @@ -35,6 +35,7 @@ enum hdmi_infoframe_type { }; #define HDMI_IEEE_OUI 0x000c03 +#define HDMI_IEEE_OUI_HF 0xc45dd8 #define HDMI_INFOFRAME_HEADER_SIZE 4 #define HDMI_AVI_INFOFRAME_SIZE 13 #define HDMI_SPD_INFOFRAME_SIZE 25