From: Anusha Srivatsa <anusha.srivatsa@intel.com>
To: intel-gfx@lists.freedesktop.org
Cc: Manasi Navare <manasi.d.navare@intel.com>,
Anusha Srivatsa <anusha.srivatsa@intel.com>,
dri-devel@lists.freedesktop.org
Subject: [PATCH] drm: Add DPCD definitions for DP 1.4 FEC feature
Date: Wed, 14 Feb 2018 11:28:18 -0800 [thread overview]
Message-ID: <1518636498-20921-1-git-send-email-anusha.srivatsa@intel.com> (raw)
In-Reply-To: <1518595150-815-1-git-send-email-anusha.srivatsa@intel.com>
Forward Error Correction is supported on DP 1.4.
This patch adds corresponding DPCD register definitions.
v2: Add dri-devel mailing list to the CC list(Jani)
v3: Change names, add missing masks (Manasi)
v4: Add missing shifts to mask (Manasi)
v5: Arrange the definitions in ascending order
of the address (Jani)
v6: remove unnecessary definitions. Add missing masks,
add "/* 1.4 */" to offset definitions. (Jani)
Cc: dri-devel@lists.freedesktop.org
Cc: Ville Syrjala <ville.syrjala@linux.intel.com>
Cc: Jani Nikula <jani.nikula@linux.intel.com>
Cc: Manasi Navare <manasi.d.navare@intel.com>
Signed-off-by: Anusha Srivatsa <anusha.srivatsa@intel.com>
---
include/drm/drm_dp_helper.h | 30 ++++++++++++++++++++++++++++++
1 file changed, 30 insertions(+)
diff --git a/include/drm/drm_dp_helper.h b/include/drm/drm_dp_helper.h
index c239e6e..4de97e9 100644
--- a/include/drm/drm_dp_helper.h
+++ b/include/drm/drm_dp_helper.h
@@ -329,6 +329,13 @@
# define DP_DS_12BPC 2
# define DP_DS_16BPC 3
+/* DP Forward error Correction Registers */
+#define DP_FEC_CAPABILITY 0x090 /* 1.4 */
+# 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)
+
/* link configuration */
#define DP_LINK_BW_SET 0x100
# define DP_LINK_RATE_TABLE 0x00 /* eDP 1.4 */
@@ -445,6 +452,19 @@
#define DP_UPSTREAM_DEVICE_DP_PWR_NEED 0x118 /* 1.2 */
# define DP_PWR_NOT_NEEDED (1 << 0)
+#define DP_FEC_CONFIGURATION 0x120 /* 1.4 */
+# define DP_FEC_READY (1 << 0)
+# define DP_FEC_ERR_COUNT_SEL_MASK (7 << 1)
+# 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_SELECT_MASK (3 << 4)
+# 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_AUX_FRAME_SYNC_VALUE 0x15c /* eDP 1.4 */
# define DP_AUX_FRAME_SYNC_VALID (1 << 0)
@@ -620,6 +640,16 @@
#define DP_TEST_SINK 0x270
# define DP_TEST_SINK_START (1 << 0)
+#define DP_FEC_STATUS 0x280 /* 1.4 */
+# define DP_FEC_DECODE_EN_DETECTED (1 << 0)
+# define DP_FEC_DECODE_DIS_DETECTED (1 << 1)
+
+#define DP_FEC_ERROR_COUNT_LSB 0x0281 /* 1.4 */
+
+#define DP_FEC_ERROR_COUNT_MSB 0x0282 /* 1.4 */
+# define DP_FEC_ERROR_COUNT_MASK 0x7F
+# define DP_FEC_ERR_COUNT_VALID (1 << 7)
+
#define DP_PAYLOAD_TABLE_UPDATE_STATUS 0x2c0 /* 1.2 MST */
# define DP_PAYLOAD_TABLE_UPDATED (1 << 0)
# define DP_PAYLOAD_ACT_HANDLED (1 << 1)
--
2.7.4
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next prev parent reply other threads:[~2018-02-14 19:28 UTC|newest]
Thread overview: 9+ messages / expand[flat|nested] mbox.gz Atom feed top
2018-02-14 7:59 [PATCH] drm: Add DPCD definitions for DP 1.4 FEC feature Anusha Srivatsa
2018-02-14 11:59 ` Jani Nikula
2018-02-14 19:28 ` Anusha Srivatsa [this message]
2018-02-15 13:53 ` Jani Nikula
-- strict thread matches above, loose matches on Subject: below --
2017-12-22 22:02 Anusha Srivatsa
2017-12-22 23:39 ` Manasi Navare
2017-11-28 0:55 Anusha Srivatsa
2017-12-21 20:36 ` Manasi Navare
2017-12-21 20:51 ` Srivatsa, Anusha
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