drm/i915: Add eDP support on IGDNG mobile chip

This adds embedded DisplayPort support on next mobile chip which
aims to replace origin LVDS port. VBT's driver feature block has
been used to determine the type of current internal panel for eDP
or LVDS.

Currently no panel fitting support for eDP and backlight control
would be added in future.

Signed-off-by: Zhenyu Wang <zhenyuw@linux.intel.com>
Signed-off-by: Eric Anholt <eric@anholt.net>

1 files changed, 16 insertions, 0 deletions

diff --git a/drivers/gpu/drm/i915/i915_reg.h b/drivers/gpu/drm/i915/i915_reg.h
index 4518a9489ed1..2955083aa471 100644
--- a/drivers/gpu/drm/i915/i915_reg.h
+++ b/drivers/gpu/drm/i915/i915_reg.h
@@ -1395,6 +1395,7 @@
 #define TV_V_CHROMA_42          0x684a8
 
 /* Display Port */
+#define DP_A                            0x64000 /* eDP */
 #define DP_B                            0x64100
 #define DP_C                            0x64200
 #define DP_D                            0x64300
@@ -1437,9 +1438,17 @@
 /* Mystic DPCD version 1.1 special mode */
 #define   DP_ENHANCED_FRAMING           (1 << 18)
 
+/* eDP */
+#define   DP_PLL_FREQ_270MHZ            (0 << 16)
+#define   DP_PLL_FREQ_160MHZ            (1 << 16)
+#define   DP_PLL_FREQ_MASK              (3 << 16)
+
 /** locked once port is enabled */
 #define   DP_PORT_REVERSAL              (1 << 15)
 
+/* eDP */
+#define   DP_PLL_ENABLE                 (1 << 14)
+
 /** sends the clock on lane 15 of the PEG for debug */
 #define   DP_CLOCK_OUTPUT_ENABLE        (1 << 13)
 
@@ -1464,6 +1473,13 @@
  * is 20 bytes in each direction, hence the 5 fixed
  * data registers
  */
+#define DPA_AUX_CH_CTL                  0x64010
+#define DPA_AUX_CH_DATA1                0x64014
+#define DPA_AUX_CH_DATA2                0x64018
+#define DPA_AUX_CH_DATA3                0x6401c
+#define DPA_AUX_CH_DATA4                0x64020
+#define DPA_AUX_CH_DATA5                0x64024
+
 #define DPB_AUX_CH_CTL                  0x64110
 #define DPB_AUX_CH_DATA1                0x64114
 #define DPB_AUX_CH_DATA2                0x64118