From: baihan li <libaihan@xxxxxxxxxx>
Realizing the basic display function of DP cable for DP connector
displaying. Add DP module in hibmc drm driver, which is for Hisilicon
Hibmc SoC which used for Out-of-band management. Blow is the general
hardware connection, both the Hibmc and the host CPU are on the same
mother board.
+----------+ +----------+ +----- ----+ +----------------+
| | PCIe | Hibmc | | | | |
|host CPU( |<----->| display |<---->| dp kapi |<---->| dp aux moduel |
|arm64,x86)| |subsystem | | moduel |<---->| dp link moduel |
+----------+ +----------+ +----------+ +----------------+
---
ChangeLog:
v5 -> v6:
- adding do{} while(0) in macro defination function, suggested by Dmitry Baryshkov.
- using drm_dbg_dp() to print debug info instead of drm_info(), suggested by Dmitry Baryshkov.
- adding code comments in hibmc_dp_set_sst(), suggested by Dmitry Baryshkov.
- adding hpd and get_edid comments in the beginning of patch, suggested by Dmitry Baryshkov.
v4 -> v5:
- fixing build errors reported by kernel test robot <lkp@xxxxxxxxx>
Closes: https://lore.kernel.org/oe-kbuild-all/202411131438.RZWYrWTE-lkp@xxxxxxxxx/
v4:https://lore.kernel.org/all/20241112132348.2631150-1-shiyongbang@xxxxxxxxxx/
v3 -> v4:
- retun error codes in result incorrect branch, suggested by Dmitry Baryshkov.
- replacing all ret= with returns, suggested by Dmitry Baryshkov.
- moving the comment below the judgment statement, suggested by Dmitry Baryshkov.
- moving definations to the source file and clearing headers, suggested by Dmitry Baryshkov.
- reanaming dp_prefix to hibmc_dp_prefix, suggested by Dmitry Baryshkov.
- changing hibmc_dp_reg_write_field to static inline and lock, suggested by Dmitry Baryshkov.
- moving some structs to later patch, suggested by Dmitry Baryshkov.
- optimizing hibmc_dp_link_get_adjust_train() to delete for loop, suggested by Dmitry Baryshkov.
- changing ELNRNG to EIO error code, suggested by Dmitry Baryshkov.
- deleting meaningless macro, suggested by Dmitry Baryshkov.
- fixing build errors reported by kernel test robot <lkp@xxxxxxxxx>
Closes: https://lore.kernel.org/oe-kbuild-all/202411041559.WIfxRN6n-lkp@xxxxxxxxx/
- changed the type of train_set to array, suggested by Dmitry Baryshkov.
- using actual link rate instead of magic num, suggested by Dmitry Baryshkov.
- deleting hibmc_dp_hw_uninit(), suggested by Dmitry Baryshkov.
- separating hibmc_vdac and hibmc_dp changes into separate patche, suggested by Dmitry Baryshkov.
- static int hibmc_dp_prepare(), suggested by Dmitry Baryshkov.
v3:https://lore.kernel.org/all/20241101105028.2177274-1-shiyongbang@xxxxxxxxxx/
v2 -> v3:
- put the macro definations in latter patch where they are actually used, suggested by Dmitry Baryshkov.
- rename some macro definations to make them sensible, suggested by Dmitry Baryshkov.
- using FIELD_PREP and FIELD_GET, suggested by Dmitry Baryshkov.
- using DP_DPCD_REV_foo, suggested by Dmitry Baryshkov.
- using switchcase in dp_link_reduce_lane, suggested by Dmitry Baryshkov.
- deleting dp_link_pattern2dpcd function and using macros directly, suggested by Dmitry Baryshkov.
- deleting EFAULT error codes, suggested by Dmitry Baryshkov.
- fix build errors reported by kernel test robot <lkp@xxxxxxxxx>
Closes: https://lore.kernel.org/oe-kbuild-all/202410250305.UHKDhtxy-lkp@xxxxxxxxx/
Closes: https://lore.kernel.org/oe-kbuild-all/202410250931.UDQ9s66H-lkp@xxxxxxxxx/
Closes: https://lore.kernel.org/oe-kbuild-all/202410251136.1m7BlR68-lkp@xxxxxxxxx/
v2:https://lore.kernel.org/all/20241022124148.1952761-1-shiyongbang@xxxxxxxxxx/
v1 -> v2:
- using drm_dp_aux frame implement dp aux read and write functions, suggested by Jani Nikula.
- using drm dp header files' dp macros instead, suggested by Andy Yan.
- using drm_dp_* functions implement dp link training process, suggested by Jani Nikula.
- changed some defines and functions to former patch, suggested by Dmitry Baryshkov.
- sorting the headers including in dp_hw.h and hibmc_drm_drv.c files, suggested by Dmitry Baryshkov.
- deleting struct dp_mode and dp_mode_cfg function, suggested by Dmitry Baryshkov.
- modifying drm_simple_encoder_init function, suggested by Dmitry Baryshkov.
- refactoring struct hibmc_connector, suggested by Dmitry Baryshkov.
- withdrawing the modification in hibmc_kms_init, suggested by Dmitry Baryshkov.
- fix build errors reported by kernel test robot <lkp@xxxxxxxxx>
Closes: https://lore.kernel.org/oe-kbuild-all/202410031735.8iRZZR6T-lkp@xxxxxxxxx/
Closes: https://lore.kernel.org/oe-kbuild-all/202410040328.VeVxM9yB-lkp@xxxxxxxxx/
v1:https://lore.kernel.org/all/20240930100610.782363-1-shiyongbang@xxxxxxxxxx/
---
baihan li (5):
drm/hisilicon/hibmc: add dp aux in hibmc drivers
drm/hisilicon/hibmc: add dp link moduel in hibmc drivers
drm/hisilicon/hibmc: add dp hw moduel in hibmc driver
drm/hisilicon/hibmc: refactored struct hibmc_drm_private
drm/hisilicon/hibmc: add dp module in hibmc
drivers/gpu/drm/hisilicon/hibmc/Makefile | 3 +-
drivers/gpu/drm/hisilicon/hibmc/dp/dp_aux.c | 164 +++++++++
drivers/gpu/drm/hisilicon/hibmc/dp/dp_comm.h | 66 ++++
.../gpu/drm/hisilicon/hibmc/dp/dp_config.h | 19 +
drivers/gpu/drm/hisilicon/hibmc/dp/dp_hw.c | 220 ++++++++++++
drivers/gpu/drm/hisilicon/hibmc/dp/dp_hw.h | 28 ++
drivers/gpu/drm/hisilicon/hibmc/dp/dp_link.c | 339 ++++++++++++++++++
drivers/gpu/drm/hisilicon/hibmc/dp/dp_reg.h | 76 ++++
.../gpu/drm/hisilicon/hibmc/hibmc_drm_dp.c | 118 ++++++
.../gpu/drm/hisilicon/hibmc/hibmc_drm_drv.c | 12 +
.../gpu/drm/hisilicon/hibmc/hibmc_drm_drv.h | 19 +-
.../gpu/drm/hisilicon/hibmc/hibmc_drm_i2c.c | 41 ++-
.../gpu/drm/hisilicon/hibmc/hibmc_drm_vdac.c | 20 +-
13 files changed, 1086 insertions(+), 39 deletions(-)
create mode 100644 drivers/gpu/drm/hisilicon/hibmc/dp/dp_aux.c
create mode 100644 drivers/gpu/drm/hisilicon/hibmc/dp/dp_comm.h
create mode 100644 drivers/gpu/drm/hisilicon/hibmc/dp/dp_config.h
create mode 100644 drivers/gpu/drm/hisilicon/hibmc/dp/dp_hw.c
create mode 100644 drivers/gpu/drm/hisilicon/hibmc/dp/dp_hw.h
create mode 100644 drivers/gpu/drm/hisilicon/hibmc/dp/dp_link.c
create mode 100644 drivers/gpu/drm/hisilicon/hibmc/dp/dp_reg.h
create mode 100644 drivers/gpu/drm/hisilicon/hibmc/hibmc_drm_dp.c
--
2.33.0
