diff options
Diffstat (limited to 'drivers')
| -rw-r--r-- | drivers/gpu/drm/drm_edid.c | 44 |
1 files changed, 44 insertions, 0 deletions
diff --git a/drivers/gpu/drm/drm_edid.c b/drivers/gpu/drm/drm_edid.c index 631125b46e04..184d97230453 100644 --- a/drivers/gpu/drm/drm_edid.c +++ b/drivers/gpu/drm/drm_edid.c @@ -4849,6 +4849,41 @@ static void drm_parse_vcdb(struct drm_connector *connector, const u8 *db) info->rgb_quant_range_selectable = true; } +static +void drm_get_max_frl_rate(int max_frl_rate, u8 *max_lanes, u8 *max_rate_per_lane) +{ + switch (max_frl_rate) { + case 1: + *max_lanes = 3; + *max_rate_per_lane = 3; + break; + case 2: + *max_lanes = 3; + *max_rate_per_lane = 6; + break; + case 3: + *max_lanes = 4; + *max_rate_per_lane = 6; + break; + case 4: + *max_lanes = 4; + *max_rate_per_lane = 8; + break; + case 5: + *max_lanes = 4; + *max_rate_per_lane = 10; + break; + case 6: + *max_lanes = 4; + *max_rate_per_lane = 12; + break; + case 0: + default: + *max_lanes = 0; + *max_rate_per_lane = 0; + } +} + static void drm_parse_ycbcr420_deep_color_info(struct drm_connector *connector, const u8 *db) { @@ -4902,6 +4937,15 @@ static void drm_parse_hdmi_forum_vsdb(struct drm_connector *connector, } } + if (hf_vsdb[7]) { + u8 max_frl_rate; + + DRM_DEBUG_KMS("hdmi_21 sink detected. parsing edid\n"); + max_frl_rate = (hf_vsdb[7] & DRM_EDID_MAX_FRL_RATE_MASK) >> 4; + drm_get_max_frl_rate(max_frl_rate, &hdmi->max_lanes, + &hdmi->max_frl_rate_per_lane); + } + drm_parse_ycbcr420_deep_color_info(connector, hf_vsdb); } |