drm/i915: add some registers need for displayport MST support.

These are just from the Haswell spec.

Reviewed-by: Todd Previte <tprevite@gmail.com>
Signed-off-by: Dave Airlie <airlied@redhat.com>

diff --git a/drivers/gpu/drm/i915/i915_reg.h b/drivers/gpu/drm/i915/i915_reg.h
index 2d2c4de..b0036cd 100644 (file)
--- a/drivers/gpu/drm/i915/i915_reg.h
+++ b/drivers/gpu/drm/i915/i915_reg.h
@@ -5815,6 +5815,7 @@ enum punit_power_well {
 #define  TRANS_DDI_EDP_INPUT_A_ONOFF   (4<<12)
 #define  TRANS_DDI_EDP_INPUT_B_ONOFF   (5<<12)
 #define  TRANS_DDI_EDP_INPUT_C_ONOFF   (6<<12)
+#define  TRANS_DDI_DP_VC_PAYLOAD_ALLOC (1<<8)
 #define  TRANS_DDI_BFI_ENABLE          (1<<4)
 
 /* DisplayPort Transport Control */
@@ -5824,6 +5825,7 @@ enum punit_power_well {
 #define  DP_TP_CTL_ENABLE                      (1<<31)
 #define  DP_TP_CTL_MODE_SST                    (0<<27)
 #define  DP_TP_CTL_MODE_MST                    (1<<27)
+#define  DP_TP_CTL_FORCE_ACT                   (1<<25)
 #define  DP_TP_CTL_ENHANCED_FRAME_ENABLE       (1<<18)
 #define  DP_TP_CTL_FDI_AUTOTRAIN               (1<<15)
 #define  DP_TP_CTL_LINK_TRAIN_MASK             (7<<8)
@@ -5838,8 +5840,13 @@ enum punit_power_well {
 #define DP_TP_STATUS_A                 0x64044
 #define DP_TP_STATUS_B                 0x64144
 #define DP_TP_STATUS(port) _PORT(port, DP_TP_STATUS_A, DP_TP_STATUS_B)
-#define  DP_TP_STATUS_IDLE_DONE                (1<<25)
-#define  DP_TP_STATUS_AUTOTRAIN_DONE   (1<<12)
+#define  DP_TP_STATUS_IDLE_DONE                        (1<<25)
+#define  DP_TP_STATUS_ACT_SENT                 (1<<24)
+#define  DP_TP_STATUS_MODE_STATUS_MST          (1<<23)
+#define  DP_TP_STATUS_AUTOTRAIN_DONE           (1<<12)
+#define  DP_TP_STATUS_PAYLOAD_MAPPING_VC2      (3 << 8)
+#define  DP_TP_STATUS_PAYLOAD_MAPPING_VC1      (3 << 4)
+#define  DP_TP_STATUS_PAYLOAD_MAPPING_VC0      (3 << 0)
 
 /* DDI Buffer Control */
 #define DDI_BUF_CTL_A                          0x64000