From: Ville Syrjälä <ville.syrj...@linux.intel.com>
The MST vs. SST selection should depend purely on the choice of the
connector/encoder. So don't try to determine the correct DDI mode
based on the intel_dp->is_mst, which simply tells us whether the sink
is in MST mode or not. Instead derive the information from the encoder
type. Since the link training code deals in non-fake encoders, we'll
also need to keep a second copy of that information around, which we'll
now designate as 'link_mst'.
Cc: Maarten Lankhorst <maarten.lankho...@linux.intel.com>
Signed-off-by: Ville Syrjälä <ville.syrj...@linux.intel.com>
---
drivers/gpu/drm/i915/intel_ddi.c | 19 +++----------------
drivers/gpu/drm/i915/intel_dp.c | 1 +
drivers/gpu/drm/i915/intel_drv.h | 1 +
3 files changed, 5 insertions(+), 16 deletions(-)
diff --git a/drivers/gpu/drm/i915/intel_ddi.c b/drivers/gpu/drm/i915/intel_ddi.c
index fe951e2564a2..253dc23a86e8 100644
--- a/drivers/gpu/drm/i915/intel_ddi.c
+++ b/drivers/gpu/drm/i915/intel_ddi.c
@@ -1103,7 +1103,6 @@ void intel_ddi_enable_transcoder_func(struct drm_crtc
*crtc)
{
struct intel_crtc *intel_crtc = to_intel_crtc(crtc);
struct intel_encoder *intel_encoder = intel_ddi_get_crtc_encoder(crtc);
- struct drm_encoder *encoder = &intel_encoder->base;
struct drm_device *dev = crtc->dev;
struct drm_i915_private *dev_priv = dev->dev_private;
enum pipe pipe = intel_crtc->pipe;
@@ -1173,22 +1172,10 @@ void intel_ddi_enable_transcoder_func(struct drm_crtc
*crtc)
temp |= (intel_crtc->config->fdi_lanes - 1) << 1;
} else if (intel_crtc_has_type(intel_crtc->config, INTEL_OUTPUT_DP) ||
intel_crtc_has_type(intel_crtc->config, INTEL_OUTPUT_EDP)) {
- struct intel_dp *intel_dp = enc_to_intel_dp(encoder);
-
- if (intel_dp->is_mst) {
- temp |= TRANS_DDI_MODE_SELECT_DP_MST;
- } else
- temp |= TRANS_DDI_MODE_SELECT_DP_SST;
-
+ temp |= TRANS_DDI_MODE_SELECT_DP_SST;
temp |= DDI_PORT_WIDTH(intel_crtc->config->lane_count);
} else if (intel_crtc_has_type(intel_crtc->config,
INTEL_OUTPUT_DP_MST)) {
- struct intel_dp *intel_dp = &enc_to_mst(encoder)->primary->dp;
-
- if (intel_dp->is_mst) {
- temp |= TRANS_DDI_MODE_SELECT_DP_MST;
- } else
- temp |= TRANS_DDI_MODE_SELECT_DP_SST;
-
+ temp |= TRANS_DDI_MODE_SELECT_DP_MST;
temp |= DDI_PORT_WIDTH(intel_crtc->config->lane_count);
} else {
WARN(1, "Invalid encoder type 0x%x for pipe %c\n",
@@ -2098,7 +2085,7 @@ void intel_ddi_prepare_link_retrain(struct intel_dp
*intel_dp)
val = DP_TP_CTL_ENABLE |
DP_TP_CTL_LINK_TRAIN_PAT1 | DP_TP_CTL_SCRAMBLE_DISABLE;
- if (intel_dp->is_mst)
+ if (intel_dp->link_mst)
val |= DP_TP_CTL_MODE_MST;
else {
val |= DP_TP_CTL_MODE_SST;
diff --git a/drivers/gpu/drm/i915/intel_dp.c b/drivers/gpu/drm/i915/intel_dp.c
index bf55efff647f..167279ec0cff 100644
--- a/drivers/gpu/drm/i915/intel_dp.c
+++ b/drivers/gpu/drm/i915/intel_dp.c
@@ -1668,6 +1668,7 @@ void intel_dp_set_link_params(struct intel_dp *intel_dp,
{
intel_dp->link_rate = pipe_config->port_clock;
intel_dp->lane_count = pipe_config->lane_count;
+ intel_dp->link_mst = intel_crtc_has_type(pipe_config,
INTEL_OUTPUT_DP_MST);
}
static void intel_dp_prepare(struct intel_encoder *encoder)
diff --git a/drivers/gpu/drm/i915/intel_drv.h b/drivers/gpu/drm/i915/intel_drv.h
index 3f38b2c809ec..3318b9af0d43 100644
--- a/drivers/gpu/drm/i915/intel_drv.h
+++ b/drivers/gpu/drm/i915/intel_drv.h
@@ -829,6 +829,7 @@ struct intel_dp {
int link_rate;
uint8_t lane_count;
uint8_t sink_count;
+ bool link_mst;
bool has_audio;
bool detect_done;
enum hdmi_force_audio force_audio;
--
2.7.4
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