Hi Baihan， At 2024-10-01 15:26:23, "shiyongbang" <shiyongbang@xxxxxxxxxx> wrote:From: baihan li <libaihan@xxxxxxxxxx> Add dp aux read/write functions. They are basic functions and will be used later. Signed-off-by: baihan li <libaihan@xxxxxxxxxx> --- 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 0x0206It 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 in include/drm/display/drm_dp.h.
Thanks.
Baihan Li.
