Hi Baihan，
At 2024-10-01 15:26:23, "shiyongbang"<shiyongb...@huawei.com> wrote:
From: baihan li<libai...@huawei.com>
Add dp aux read/write functions. They are basic functions
and will be used later.
Signed-off-by: baihan li<libai...@huawei.com>
---
drivers/gpu/drm/hisilicon/hibmc/Makefile | 3 +-
drivers/gpu/drm/hisilicon/hibmc/dp/dp_aux.c | 227 +++++++++++++++++++
drivers/gpu/drm/hisilicon/hibmc/dp/dp_aux.h | 80 +++++++
drivers/gpu/drm/hisilicon/hibmc/dp/dp_comm.h | 88 +++++++
drivers/gpu/drm/hisilicon/hibmc/dp/dp_reg.h | 76 +++++++
5 files changed, 473 insertions(+), 1 deletion(-)
create mode 100644 drivers/gpu/drm/hisilicon/hibmc/dp/dp_aux.c
create mode 100644 drivers/gpu/drm/hisilicon/hibmc/dp/dp_aux.h
create mode 100644 drivers/gpu/drm/hisilicon/hibmc/dp/dp_comm.h
create mode 100644 drivers/gpu/drm/hisilicon/hibmc/dp/dp_reg.h
diff --git a/drivers/gpu/drm/hisilicon/hibmc/Makefile
b/drivers/gpu/drm/hisilicon/hibmc/Makefile
index d25c75e60d3d..8770ec6dfffd 100644
--- a/drivers/gpu/drm/hisilicon/hibmc/Makefile
+++ b/drivers/gpu/drm/hisilicon/hibmc/Makefile
@@ -1,4 +1,5 @@
# SPDX-License-Identifier: GPL-2.0-only
-hibmc-drm-y := hibmc_drm_drv.o hibmc_drm_de.o hibmc_drm_vdac.o hibmc_drm_i2c.o
+hibmc-drm-y := hibmc_drm_drv.o hibmc_drm_de.o hibmc_drm_vdac.o hibmc_drm_i2c.o
\
+ dp/dp_aux.o
+
+#define DPCD_LINK_BW_SET 0x0100
+#define DPCD_LANE_COUNT_SET 0x0101
+#define DPCD_TRAINING_PATTERN_SET 0x0102
+#define DPCD_TRAINING_LANE0_SET 0x0103
+#define DPCD_DOWNSPREAD_CTRL 0x0107
+#define DPCD_LANE0_1_STATUS 0x0202
+#define DPCD_ADJUST_REQUEST_LANE0_1 0x0206
It seems that all of these have been defined in this header file.
include/drm/display/drm_dp.h：
DP_LINK_BW_SET
DP_LANE_COUNT_SET
Ok, I will use general defination ininclude/drm/display/drm_dp.h. Thanks.
Baihan Li.
