drm/i915: Move TRANS_DDI_FUNC_CTL2 programming where it belongs

This port sync enable/disable stuff is misplaced. It's just another step
of the normal TRANS_DDI_FUNC_CTL enable. Move it to its natural place.

Signed-off-by: Ville Syrjälä <ville.syrjala@linux.intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20200313164831.5980-3-ville.syrjala@linux.intel.com
Reviewed-by: Manasi Navare <manasi.d.navare@intel.com>

diff --git a/drivers/gpu/drm/i915/display/intel_ddi.c b/drivers/gpu/drm/i915/display/intel_ddi.c
index 3df7fb5..ccadd39 100644 (file)
--- a/drivers/gpu/drm/i915/display/intel_ddi.c
+++ b/drivers/gpu/drm/i915/display/intel_ddi.c
@@ -1560,12 +1560,34 @@ void intel_ddi_enable_transcoder_func(const struct intel_crtc_state *crtc_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;
+       u32 ctl;
+
+       if (INTEL_GEN(dev_priv) >= 11) {
+               enum transcoder master_transcoder = crtc_state->master_transcoder;
+               u32 ctl2 = 0;
+
+               if (master_transcoder != INVALID_TRANSCODER) {
+                       u8 master_select;
+
+                       if (master_transcoder == TRANSCODER_EDP)
+                               master_select = 0;
+                       else
+                               master_select = master_transcoder + 1;
 
-       temp = intel_ddi_transcoder_func_reg_val_get(crtc_state);
+                       ctl2 |= PORT_SYNC_MODE_ENABLE |
+                               (PORT_SYNC_MODE_MASTER_SELECT(master_select) &
+                                PORT_SYNC_MODE_MASTER_SELECT_MASK) <<
+                               PORT_SYNC_MODE_MASTER_SELECT_SHIFT;
+               }
+
+               intel_de_write(dev_priv,
+                              TRANS_DDI_FUNC_CTL2(cpu_transcoder), ctl2);
+       }
+
+       ctl = 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;
-       intel_de_write(dev_priv, TRANS_DDI_FUNC_CTL(cpu_transcoder), temp);
+               ctl |= TRANS_DDI_DP_VC_PAYLOAD_ALLOC;
+       intel_de_write(dev_priv, TRANS_DDI_FUNC_CTL(cpu_transcoder), ctl);
 }
 
 /*
@@ -1578,11 +1600,11 @@ intel_ddi_config_transcoder_func(const struct intel_crtc_state *crtc_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;
+       u32 ctl;
 
-       temp = intel_ddi_transcoder_func_reg_val_get(crtc_state);
-       temp &= ~TRANS_DDI_FUNC_ENABLE;
-       intel_de_write(dev_priv, TRANS_DDI_FUNC_CTL(cpu_transcoder), temp);
+       ctl = intel_ddi_transcoder_func_reg_val_get(crtc_state);
+       ctl &= ~TRANS_DDI_FUNC_ENABLE;
+       intel_de_write(dev_priv, TRANS_DDI_FUNC_CTL(cpu_transcoder), ctl);
 }
 
 void intel_ddi_disable_transcoder_func(const struct intel_crtc_state *crtc_state)
@@ -1590,20 +1612,24 @@ void intel_ddi_disable_transcoder_func(const struct intel_crtc_state *crtc_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 val;
+       u32 ctl;
 
-       val = intel_de_read(dev_priv, TRANS_DDI_FUNC_CTL(cpu_transcoder));
-       val &= ~TRANS_DDI_FUNC_ENABLE;
+       if (INTEL_GEN(dev_priv) >= 11)
+               intel_de_write(dev_priv,
+                              TRANS_DDI_FUNC_CTL2(cpu_transcoder), 0);
+
+       ctl = intel_de_read(dev_priv, TRANS_DDI_FUNC_CTL(cpu_transcoder));
+       ctl &= ~TRANS_DDI_FUNC_ENABLE;
 
        if (INTEL_GEN(dev_priv) >= 12) {
                if (!intel_dp_mst_is_master_trans(crtc_state)) {
-                       val &= ~(TGL_TRANS_DDI_PORT_MASK |
+                       ctl &= ~(TGL_TRANS_DDI_PORT_MASK |
                                 TRANS_DDI_MODE_SELECT_MASK);
                }
        } else {
-               val &= ~(TRANS_DDI_PORT_MASK | TRANS_DDI_MODE_SELECT_MASK);
+               ctl &= ~(TRANS_DDI_PORT_MASK | TRANS_DDI_MODE_SELECT_MASK);
        }
-       intel_de_write(dev_priv, TRANS_DDI_FUNC_CTL(cpu_transcoder), val);
+       intel_de_write(dev_priv, TRANS_DDI_FUNC_CTL(cpu_transcoder), ctl);
 
        if (dev_priv->quirks & QUIRK_INCREASE_DDI_DISABLED_TIME &&
            intel_crtc_has_type(crtc_state, INTEL_OUTPUT_HDMI)) {
@@ -3419,22 +3445,6 @@ static void intel_ddi_post_disable_hdmi(struct intel_encoder *encoder,
        intel_dp_dual_mode_set_tmds_output(intel_hdmi, false);
 }
 
-static void icl_disable_transcoder_port_sync(const struct intel_crtc_state *old_crtc_state)
-{
-       struct intel_crtc *crtc = to_intel_crtc(old_crtc_state->uapi.crtc);
-       struct drm_i915_private *dev_priv = to_i915(crtc->base.dev);
-
-       if (old_crtc_state->master_transcoder == INVALID_TRANSCODER)
-               return;
-
-       drm_dbg_kms(&dev_priv->drm,
-                   "Disabling Transcoder Port Sync on Slave Transcoder %s\n",
-                   transcoder_name(old_crtc_state->cpu_transcoder));
-
-       intel_de_write(dev_priv,
-                      TRANS_DDI_FUNC_CTL2(old_crtc_state->cpu_transcoder), 0);
-}
-
 static void intel_ddi_post_disable(struct intel_encoder *encoder,
                                   const struct intel_crtc_state *old_crtc_state,
                                   const struct drm_connector_state *old_conn_state)
@@ -3449,9 +3459,6 @@ static void intel_ddi_post_disable(struct intel_encoder *encoder,
 
                intel_disable_pipe(old_crtc_state);
 
-               if (INTEL_GEN(dev_priv) >= 11)
-                       icl_disable_transcoder_port_sync(old_crtc_state);
-
                intel_ddi_disable_transcoder_func(old_crtc_state);
 
                intel_dsc_disable(old_crtc_state);

diff --git a/drivers/gpu/drm/i915/display/intel_display.c b/drivers/gpu/drm/i915/display/intel_display.c
index f745027..b7a677b 100644 (file)
--- a/drivers/gpu/drm/i915/display/intel_display.c
+++ b/drivers/gpu/drm/i915/display/intel_display.c
@@ -4998,37 +4998,6 @@ static void icl_set_pipe_chicken(struct intel_crtc *crtc)
        intel_de_write(dev_priv, PIPE_CHICKEN(pipe), tmp);
 }
 
-static void icl_enable_trans_port_sync(const struct intel_crtc_state *crtc_state)
-{
-       struct intel_crtc *crtc = to_intel_crtc(crtc_state->uapi.crtc);
-       struct drm_i915_private *dev_priv = to_i915(crtc->base.dev);
-       u32 trans_ddi_func_ctl2_val;
-       u8 master_select;
-
-       /*
-        * Configure the master select and enable Transcoder Port Sync for
-        * Slave CRTCs transcoder.
-        */
-       if (crtc_state->master_transcoder == INVALID_TRANSCODER)
-               return;
-
-       if (crtc_state->master_transcoder == TRANSCODER_EDP)
-               master_select = 0;
-       else
-               master_select = crtc_state->master_transcoder + 1;
-
-       /* Set the master select bits for Tranascoder Port Sync */
-       trans_ddi_func_ctl2_val = (PORT_SYNC_MODE_MASTER_SELECT(master_select) &
-                                  PORT_SYNC_MODE_MASTER_SELECT_MASK) <<
-               PORT_SYNC_MODE_MASTER_SELECT_SHIFT;
-       /* Enable Transcoder Port Sync */
-       trans_ddi_func_ctl2_val |= PORT_SYNC_MODE_ENABLE;
-
-       intel_de_write(dev_priv,
-                      TRANS_DDI_FUNC_CTL2(crtc_state->cpu_transcoder),
-                      trans_ddi_func_ctl2_val);
-}
-
 static void intel_fdi_normal_train(struct intel_crtc *crtc)
 {
        struct drm_device *dev = crtc->base.dev;
@@ -7037,9 +7006,6 @@ static void hsw_crtc_enable(struct intel_atomic_state *state,
        if (!transcoder_is_dsi(cpu_transcoder))
                intel_set_pipe_timings(new_crtc_state);
 
-       if (INTEL_GEN(dev_priv) >= 11)
-               icl_enable_trans_port_sync(new_crtc_state);
-
        intel_set_pipe_src_size(new_crtc_state);
 
        if (cpu_transcoder != TRANSCODER_EDP &&