[Intel-gfx] [PATCH] drm: Add DPCD definitions for DP 1.4 FEC feature
Anusha Srivatsa
anusha.srivatsa at intel.com
Tue Nov 28 00:55:44 UTC 2017
Forward Error Correction is supported on DP 1.4.
This patch adds corresponding DPCD register definitions.
v2: Add dri-devel to the CC list
Cc: dri-devel at lists.freedesktop.org
Cc: Ville Syrjala <ville.syrjala at linux.intel.com>
Cc: Jani Nikula <jani.nikula at linux.intel.com>
Cc: Manasi Navare <manasi.d.navare at intel.com>
Signed-off-by: Anusha Srivatsa <anusha.srivatsa at intel.com>
---
include/drm/drm_dp_helper.h | 29 +++++++++++++++++++++++++++++
1 file changed, 29 insertions(+)
diff --git a/include/drm/drm_dp_helper.h b/include/drm/drm_dp_helper.h
index da58a42..bc816ea 100644
--- a/include/drm/drm_dp_helper.h
+++ b/include/drm/drm_dp_helper.h
@@ -284,6 +284,35 @@
# define DP_DSC_BITS_PER_PIXEL_1_2 0x3
# define DP_DSC_BITS_PER_PIXEL_1 0x4
+/* DP Forward error Correction Registers */
+#define DP_FEC_CAPABILITY 0x090
+# define DP_FEC_CAPABLE (1 << 0)
+# define DP_FEC_UNCORR_BLK_ERROR_COUNT_CAP (1 << 1)
+# define DP_FEC_CORR_BLK_ERROR_COUNT_CAP (1 << 2)
+# define DP_FEC_BIT_ERROR_COUNT_CAP (1 << 3)
+
+#define DP_FEC_CONFIGURATION 0x120
+# define DP_FEC_READY (1 << 0)
+# define DP_FEC_ERR_COUNT_DIS (0 << 1)
+# define DP_FEC_UNCORR_BLK_ERROR_COUNT (1 << 1)
+# define DP_FEC_CORR_BLK_ERROR_COUNT (2 << 1)
+# define DP_FEC_BIT_ERROR_COUNT (3 << 1)
+# define DP_FEC_LANE_0_SELECT (0 << 4)
+# define DP_FEC_LANE_1_SELECT (1 << 4)
+# define DP_FEC_LANE_2_SELECT (2 << 4)
+# define DP_FEC_LANE_3_SELECT (3 << 4)
+
+#define DP_FEC_STATUS 0x280
+# define DP_FEC_EN_DETECTED (1 << 0)
+# define DP_FEC_DEC_DETECTED (1 << 1)
+
+#define DP_FEC_ERROR_COUNT_1 0x0281
+# define DP_FEC_ERR_COUNT_7_0(err_count) (err_count << 0)
+
+#define DP_FEC_ERROR_COUNT_2 0x0282
+# define DP_FEC_ERR_COUNT_14_8(err_count) (err_count << 0)
+# define DP_FEC_ERR_COUNT_VALID (1 << 7)
+
#define DP_PSR_SUPPORT 0x070 /* XXX 1.2? */
# define DP_PSR_IS_SUPPORTED 1
# define DP_PSR2_IS_SUPPORTED 2 /* eDP 1.4 */
--
2.7.4
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