drm/i915: Enable Resource Streamer state save/restore on MI_SET_CONTEXT

[deliverable/linux.git] / drivers / gpu / drm / i915 / intel_dp.c

diff --git a/drivers/gpu/drm/i915/intel_dp.c b/drivers/gpu/drm/i915/intel_dp.c
index c43bff90c47a26e0de69933d00a229d1bee9f758..367f71224c96a20bc48f0f72f57a38969a9407e9 100644 (file)
--- a/drivers/gpu/drm/i915/intel_dp.c
+++ b/drivers/gpu/drm/i915/intel_dp.c
@@ -3424,92 +3424,6 @@ gen7_edp_signal_levels(uint8_t train_set)
        }
 }
 
-/* Gen7.5's (HSW) DP voltage swing and pre-emphasis control */
-static uint32_t
-hsw_signal_levels(uint8_t train_set)
-{
-       int signal_levels = train_set & (DP_TRAIN_VOLTAGE_SWING_MASK |
-                                        DP_TRAIN_PRE_EMPHASIS_MASK);
-       switch (signal_levels) {
-       case DP_TRAIN_VOLTAGE_SWING_LEVEL_0 | DP_TRAIN_PRE_EMPH_LEVEL_0:
-               return DDI_BUF_TRANS_SELECT(0);
-       case DP_TRAIN_VOLTAGE_SWING_LEVEL_0 | DP_TRAIN_PRE_EMPH_LEVEL_1:
-               return DDI_BUF_TRANS_SELECT(1);
-       case DP_TRAIN_VOLTAGE_SWING_LEVEL_0 | DP_TRAIN_PRE_EMPH_LEVEL_2:
-               return DDI_BUF_TRANS_SELECT(2);
-       case DP_TRAIN_VOLTAGE_SWING_LEVEL_0 | DP_TRAIN_PRE_EMPH_LEVEL_3:
-               return DDI_BUF_TRANS_SELECT(3);
-
-       case DP_TRAIN_VOLTAGE_SWING_LEVEL_1 | DP_TRAIN_PRE_EMPH_LEVEL_0:
-               return DDI_BUF_TRANS_SELECT(4);
-       case DP_TRAIN_VOLTAGE_SWING_LEVEL_1 | DP_TRAIN_PRE_EMPH_LEVEL_1:
-               return DDI_BUF_TRANS_SELECT(5);
-       case DP_TRAIN_VOLTAGE_SWING_LEVEL_1 | DP_TRAIN_PRE_EMPH_LEVEL_2:
-               return DDI_BUF_TRANS_SELECT(6);
-
-       case DP_TRAIN_VOLTAGE_SWING_LEVEL_2 | DP_TRAIN_PRE_EMPH_LEVEL_0:
-               return DDI_BUF_TRANS_SELECT(7);
-       case DP_TRAIN_VOLTAGE_SWING_LEVEL_2 | DP_TRAIN_PRE_EMPH_LEVEL_1:
-               return DDI_BUF_TRANS_SELECT(8);
-
-       case DP_TRAIN_VOLTAGE_SWING_LEVEL_3 | DP_TRAIN_PRE_EMPH_LEVEL_0:
-               return DDI_BUF_TRANS_SELECT(9);
-       default:
-               DRM_DEBUG_KMS("Unsupported voltage swing/pre-emphasis level:"
-                             "0x%x\n", signal_levels);
-               return DDI_BUF_TRANS_SELECT(0);
-       }
-}
-
-static void bxt_signal_levels(struct intel_dp *intel_dp)
-{
-       struct intel_digital_port *dport = dp_to_dig_port(intel_dp);
-       enum port port = dport->port;
-       struct drm_device *dev = dport->base.base.dev;
-       struct intel_encoder *encoder = &dport->base;
-       uint8_t train_set = intel_dp->train_set[0];
-       uint32_t level = 0;
-
-       int signal_levels = train_set & (DP_TRAIN_VOLTAGE_SWING_MASK |
-                                        DP_TRAIN_PRE_EMPHASIS_MASK);
-       switch (signal_levels) {
-       default:
-               DRM_DEBUG_KMS("Unsupported voltage swing/pre-emph level\n");
-       case DP_TRAIN_VOLTAGE_SWING_LEVEL_0 | DP_TRAIN_PRE_EMPH_LEVEL_0:
-               level = 0;
-               break;
-       case DP_TRAIN_VOLTAGE_SWING_LEVEL_0 | DP_TRAIN_PRE_EMPH_LEVEL_1:
-               level = 1;
-               break;
-       case DP_TRAIN_VOLTAGE_SWING_LEVEL_0 | DP_TRAIN_PRE_EMPH_LEVEL_2:
-               level = 2;
-               break;
-       case DP_TRAIN_VOLTAGE_SWING_LEVEL_0 | DP_TRAIN_PRE_EMPH_LEVEL_3:
-               level = 3;
-               break;
-       case DP_TRAIN_VOLTAGE_SWING_LEVEL_1 | DP_TRAIN_PRE_EMPH_LEVEL_0:
-               level = 4;
-               break;
-       case DP_TRAIN_VOLTAGE_SWING_LEVEL_1 | DP_TRAIN_PRE_EMPH_LEVEL_1:
-               level = 5;
-               break;
-       case DP_TRAIN_VOLTAGE_SWING_LEVEL_1 | DP_TRAIN_PRE_EMPH_LEVEL_2:
-               level = 6;
-               break;
-       case DP_TRAIN_VOLTAGE_SWING_LEVEL_2 | DP_TRAIN_PRE_EMPH_LEVEL_0:
-               level = 7;
-               break;
-       case DP_TRAIN_VOLTAGE_SWING_LEVEL_2 | DP_TRAIN_PRE_EMPH_LEVEL_1:
-               level = 8;
-               break;
-       case DP_TRAIN_VOLTAGE_SWING_LEVEL_3 | DP_TRAIN_PRE_EMPH_LEVEL_0:
-               level = 9;
-               break;
-       }
-
-       bxt_ddi_vswing_sequence(dev, level, port, encoder->type);
-}
-
 /* Properly updates "DP" with the correct signal levels. */
 static void
 intel_dp_set_signal_levels(struct intel_dp *intel_dp, uint32_t *DP)
@@ -3517,22 +3431,20 @@ intel_dp_set_signal_levels(struct intel_dp *intel_dp, uint32_t *DP)
        struct intel_digital_port *intel_dig_port = dp_to_dig_port(intel_dp);
        enum port port = intel_dig_port->port;
        struct drm_device *dev = intel_dig_port->base.base.dev;
-       uint32_t signal_levels, mask;
+       uint32_t signal_levels, mask = 0;
        uint8_t train_set = intel_dp->train_set[0];
 
-       if (IS_BROXTON(dev)) {
-               signal_levels = 0;
-               bxt_signal_levels(intel_dp);
-               mask = 0;
-       } else if (HAS_DDI(dev)) {
-               signal_levels = hsw_signal_levels(train_set);
-               mask = DDI_BUF_EMP_MASK;
+       if (HAS_DDI(dev)) {
+               signal_levels = ddi_signal_levels(intel_dp);
+
+               if (IS_BROXTON(dev))
+                       signal_levels = 0;
+               else
+                       mask = DDI_BUF_EMP_MASK;
        } else if (IS_CHERRYVIEW(dev)) {
                signal_levels = chv_signal_levels(intel_dp);
-               mask = 0;
        } else if (IS_VALLEYVIEW(dev)) {
                signal_levels = vlv_signal_levels(intel_dp);
-               mask = 0;
        } else if (IS_GEN7(dev) && port == PORT_A) {
                signal_levels = gen7_edp_signal_levels(train_set);
                mask = EDP_LINK_TRAIN_VOL_EMP_MASK_IVB;