drm/radeon: only enable DP audio if the monitor supports it

We were enabling DP secondary streams even if the monitor
didn't support them.  Fixes display problems on some DP
monitors.

Tested-by: Jim Boz <jim876@xs4all.nl>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>

diff --git a/drivers/gpu/drm/radeon/atombios_encoders.c b/drivers/gpu/drm/radeon/atombios_encoders.c
index 7c9df1e..7fe7b74 100644 (file)
--- a/drivers/gpu/drm/radeon/atombios_encoders.c
+++ b/drivers/gpu/drm/radeon/atombios_encoders.c
@@ -731,7 +731,9 @@ atombios_get_encoder_mode(struct drm_encoder *encoder)
                dig_connector = radeon_connector->con_priv;
                if ((dig_connector->dp_sink_type == CONNECTOR_OBJECT_ID_DISPLAYPORT) ||
                    (dig_connector->dp_sink_type == CONNECTOR_OBJECT_ID_eDP)) {
-                       if (radeon_audio != 0 && ASIC_IS_DCE4(rdev) && !ASIC_IS_DCE5(rdev))
+                       if (radeon_audio != 0 &&
+                           drm_detect_monitor_audio(radeon_connector_edid(connector)) &&
+                           ASIC_IS_DCE4(rdev) && !ASIC_IS_DCE5(rdev))
                                return ATOM_ENCODER_MODE_DP_AUDIO;
                        return ATOM_ENCODER_MODE_DP;
                } else if (radeon_audio != 0) {
@@ -747,7 +749,9 @@ atombios_get_encoder_mode(struct drm_encoder *encoder)
                }
                break;
        case DRM_MODE_CONNECTOR_eDP:
-               if (radeon_audio != 0 && ASIC_IS_DCE4(rdev) && !ASIC_IS_DCE5(rdev))
+               if (radeon_audio != 0 &&
+                   drm_detect_monitor_audio(radeon_connector_edid(connector)) &&
+                   ASIC_IS_DCE4(rdev) && !ASIC_IS_DCE5(rdev))
                        return ATOM_ENCODER_MODE_DP_AUDIO;
                return ATOM_ENCODER_MODE_DP;
        case DRM_MODE_CONNECTOR_DVIA:
@@ -1720,8 +1724,10 @@ radeon_atom_encoder_dpms_dig(struct drm_encoder *encoder, int mode)
        }
 
        encoder_mode = atombios_get_encoder_mode(encoder);
-       if (radeon_audio != 0 &&
-               (encoder_mode == ATOM_ENCODER_MODE_HDMI || ENCODER_MODE_IS_DP(encoder_mode)))
+       if (connector && (radeon_audio != 0) &&
+           ((encoder_mode == ATOM_ENCODER_MODE_HDMI) ||
+            (ENCODER_MODE_IS_DP(encoder_mode) &&
+             drm_detect_monitor_audio(radeon_connector_edid(connector)))))
                radeon_audio_dpms(encoder, mode);
 }
 
@@ -2136,6 +2142,7 @@ radeon_atom_encoder_mode_set(struct drm_encoder *encoder,
        struct drm_device *dev = encoder->dev;
        struct radeon_device *rdev = dev->dev_private;
        struct radeon_encoder *radeon_encoder = to_radeon_encoder(encoder);
+       struct drm_connector *connector = radeon_get_connector_for_encoder(encoder);
        int encoder_mode;
 
        radeon_encoder->pixel_clock = adjusted_mode->clock;
@@ -2164,8 +2171,10 @@ radeon_atom_encoder_mode_set(struct drm_encoder *encoder,
        case ENCODER_OBJECT_ID_INTERNAL_KLDSCP_LVTMA:
                /* handled in dpms */
                encoder_mode = atombios_get_encoder_mode(encoder);
-               if (radeon_audio != 0 &&
-                       (encoder_mode == ATOM_ENCODER_MODE_HDMI || ENCODER_MODE_IS_DP(encoder_mode)))
+               if (connector && (radeon_audio != 0) &&
+                   ((encoder_mode == ATOM_ENCODER_MODE_HDMI) ||
+                    (ENCODER_MODE_IS_DP(encoder_mode) &&
+                     drm_detect_monitor_audio(radeon_connector_edid(connector)))))
                        radeon_audio_mode_set(encoder, adjusted_mode);
                break;
        case ENCODER_OBJECT_ID_INTERNAL_DDI: