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>
diff --git a/drivers/gpu/drm/i915/i915_reg.h b/drivers/gpu/drm/i915/i915_reg.h
index 4518a94..2955083 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