drm/radeon: fix vertical bars appear on monitor (v2)

[firefly-linux-kernel-4.4.55.git] / drivers / gpu / drm / radeon / evergreen_hdmi.c

diff --git a/drivers/gpu/drm/radeon/evergreen_hdmi.c b/drivers/gpu/drm/radeon/evergreen_hdmi.c
index 0926739c9fa7c40d17dd09bb318cc19c4ca194c1..3cf04a2f44bbb05169264a504349dec3d949e5bb 100644 (file)
--- a/drivers/gpu/drm/radeon/evergreen_hdmi.c
+++ b/drivers/gpu/drm/radeon/evergreen_hdmi.c
@@ -289,6 +289,16 @@ void dce4_dp_audio_set_dto(struct radeon_device *rdev,
         * number (coefficient of two integer numbers.  DCCG_AUDIO_DTOx_PHASE
         * is the numerator, DCCG_AUDIO_DTOx_MODULE is the denominator
         */
+       if (ASIC_IS_DCE41(rdev)) {
+               unsigned int div = (RREG32(DCE41_DENTIST_DISPCLK_CNTL) &
+                       DENTIST_DPREFCLK_WDIVIDER_MASK) >>
+                       DENTIST_DPREFCLK_WDIVIDER_SHIFT;
+               div = radeon_audio_decode_dfs_div(div);
+
+               if (div)
+                       clock = 100 * clock / div;
+       }
+
        WREG32(DCCG_AUDIO_DTO1_PHASE, 24000);
        WREG32(DCCG_AUDIO_DTO1_MODULE, clock);
 }
@@ -400,7 +410,7 @@ void evergreen_hdmi_enable(struct drm_encoder *encoder, bool enable)
        if (enable) {
                struct drm_connector *connector = radeon_get_connector_for_encoder(encoder);
 
-               if (drm_detect_monitor_audio(radeon_connector_edid(connector))) {
+               if (connector && drm_detect_monitor_audio(radeon_connector_edid(connector))) {
                        WREG32(HDMI_INFOFRAME_CONTROL0 + dig->afmt->offset,
                               HDMI_AVI_INFO_SEND | /* enable AVI info frames */
                               HDMI_AVI_INFO_CONT | /* required for audio info values to be updated */
@@ -438,7 +448,8 @@ void evergreen_dp_enable(struct drm_encoder *encoder, bool enable)
        if (!dig || !dig->afmt)
                return;
 
-       if (enable && drm_detect_monitor_audio(radeon_connector_edid(connector))) {
+       if (enable && connector &&
+           drm_detect_monitor_audio(radeon_connector_edid(connector))) {
                struct drm_connector *connector = radeon_get_connector_for_encoder(encoder);
                struct radeon_connector *radeon_connector = to_radeon_connector(connector);
                struct radeon_connector_atom_dig *dig_connector;