drm/i915/display/mst: Enable virtual channel payload allocation earlier

This register was being enabled after enable TRANS_DDI_FUNC_CTL and
PIPECONF/TRANS_CONF while BSpec states that it should be set when
enabling TRANS_DDI_FUNC_CTL.

BSpec: 49190
BSpec: 22243
Reviewed-by: Lucas De Marchi <lucas.demarchi@intel.com>
Cc: Lucas De Marchi <lucas.demarchi@intel.com>
Signed-off-by: José Roberto de Souza <jose.souza@intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20191107214559.77087-3-jose.souza@intel.com

diff --git a/drivers/gpu/drm/i915/display/intel_ddi.c b/drivers/gpu/drm/i915/display/intel_ddi.c
index e56eb8a..8f817de 100644 (file)
--- a/drivers/gpu/drm/i915/display/intel_ddi.c
+++ b/drivers/gpu/drm/i915/display/intel_ddi.c
@@ -1802,22 +1802,6 @@ void intel_ddi_set_dp_msa(const struct intel_crtc_state *crtc_state,
        I915_WRITE(TRANS_MSA_MISC(cpu_transcoder), temp);
 }
 
-void intel_ddi_set_vc_payload_alloc(const struct intel_crtc_state *crtc_state,
-                                   bool state)
-{
-       struct intel_crtc *crtc = to_intel_crtc(crtc_state->uapi.crtc);
-       struct drm_i915_private *dev_priv = to_i915(crtc->base.dev);
-       enum transcoder cpu_transcoder = crtc_state->cpu_transcoder;
-       u32 temp;
-
-       temp = I915_READ(TRANS_DDI_FUNC_CTL(cpu_transcoder));
-       if (state == true)
-               temp |= TRANS_DDI_DP_VC_PAYLOAD_ALLOC;
-       else
-               temp &= ~TRANS_DDI_DP_VC_PAYLOAD_ALLOC;
-       I915_WRITE(TRANS_DDI_FUNC_CTL(cpu_transcoder), temp);
-}
-
 /*
  * Returns the TRANS_DDI_FUNC_CTL value based on CRTC state.
  *
@@ -1923,6 +1907,8 @@ void intel_ddi_enable_transcoder_func(const struct intel_crtc_state *crtc_state)
        u32 temp;
 
        temp = intel_ddi_transcoder_func_reg_val_get(crtc_state);
+       if (intel_crtc_has_type(crtc_state, INTEL_OUTPUT_DP_MST))
+               temp |= TRANS_DDI_DP_VC_PAYLOAD_ALLOC;
        I915_WRITE(TRANS_DDI_FUNC_CTL(cpu_transcoder), temp);
 }
 

diff --git a/drivers/gpu/drm/i915/display/intel_display.c b/drivers/gpu/drm/i915/display/intel_display.c
index 5f33405..c382498 100644 (file)
--- a/drivers/gpu/drm/i915/display/intel_display.c
+++ b/drivers/gpu/drm/i915/display/intel_display.c
@@ -6673,9 +6673,6 @@ static void haswell_crtc_enable(struct intel_crtc_state *pipe_config,
        if (pipe_config->has_pch_encoder)
                lpt_pch_enable(state, pipe_config);
 
-       if (intel_crtc_has_type(pipe_config, INTEL_OUTPUT_DP_MST))
-               intel_ddi_set_vc_payload_alloc(pipe_config, true);
-
        assert_vblank_disabled(crtc);
        intel_crtc_vblank_on(pipe_config);
 
@@ -6786,9 +6783,6 @@ static void haswell_crtc_disable(struct intel_crtc_state *old_crtc_state,
        if (!transcoder_is_dsi(cpu_transcoder))
                intel_disable_pipe(old_crtc_state);
 
-       if (intel_crtc_has_type(old_crtc_state, INTEL_OUTPUT_DP_MST))
-               intel_ddi_set_vc_payload_alloc(old_crtc_state, false);
-
        if (INTEL_GEN(dev_priv) >= 11)
                icl_disable_transcoder_port_sync(old_crtc_state);