[v4,drm-dp,0/8] Add HPD, getting EDID, colorbar features in DP function

Message

Yongbang Shi March 5, 2025, 11:26 a.m. UTC

From: Baihan Li <[e-mail]>

To support DP HPD, edid printing, and colorbar display features based on
the Hisislcon DP devices. 
---
ChangeLog:
v3 -> v4:
  - fix the serdes cfg in hibmc_dp_serdes_set_tx_cfg(), suggested by Dmitry Baryshkov.
  - move the dp serdes registers to dp_reg.h, suggested by Dmitry Baryshkov.
  - add comments for if-statement of dp_init(), suggested by Dmitry Baryshkov.
  - fix the comment log to imperative sentence, suggested by Dmitry Baryshkov.
  - add comments in hibmc_control_write(), suggested by Dmitry Baryshkov.
  - add link reset of rates and lanes in pre link training process, suggested by Dmitry Baryshkov.
  - add vdac detect and connected/disconnected status to enable HPD process, suggested by Dmitry Baryshkov.
  - remove a drm_client, suggested by Dmitry Baryshkov.
  - fix build errors reported by kernel test robot <[e-mail]>
    Closes: https://lore.kernel.org/oe-kbuild-all/[e-mail]/
v2 -> v3:
  - restructuring the header p_reg.h, suggested by Dmitry Baryshkov.
  - add commit log about dp serdes, suggested by Dmitry Baryshkov.
  - return value in hibmc_dp_serdes_init(), suggested by Dmitry Baryshkov.
  - add static const in the array of serdes_tx_cfg[], suggested by Dmitry Baryshkov.
  - change drm_warn to drm_dbg_dp, suggested by Dmitry Baryshkov.
  - add explanations about dp serdes macros, suggested by Dmitry Baryshkov.
  - change commit to an imperative sentence, suggested by Dmitry Baryshkov.
  - put HIBMC_DP_HOST_SERDES_CTRL in dp_serdes.h, suggested by Dmitry Baryshkov.
  - split the patch into two parts, suggested by Dmitry Baryshkov.
  - Capitalized EDID and AUX, suggested by Dmitry Baryshkov.
  - rewrite the commit log, suggested by Dmitry Baryshkov.
  - move colorbar debugfs entry to this patch, suggested by Dmitry Baryshkov.
  - change binary format to integer format, suggested by Dmitry Baryshkov.
  - remove mdelay(100) hpd function in ISR, suggested by Dmitry Baryshkov.
  - remove enble_display in ISR, suggested by Dmitry Baryshkov.
  - change drm_kms_helper_connector_hotplug_event() to
    drm_connector_helper_hpd_irq_event(), suggested by Dmitry Baryshkov.
  - move macros to dp_reg.h, suggested by Dmitry Baryshkov.
  - remove struct irqs, suggested by Dmitry Baryshkov.
  - split this patch into two parts, suggested by Dmitry Baryshkov.
v1 -> v2:
  - splittting the patch and add more detailed the changes in the commit message, suggested by Dmitry Baryshkov.
  - changing all names of dp phy to dp serdes.
  - deleting type conversion, suggested by Dmitry Baryshkov.
  - deleting hibmc_dp_connector_get_modes() and using drm_connector_helper_get_modes(), suggested by Dmitry Baryshkov.
  - add colorbar introduction in commit, suggested by Dmitry Baryshkov.
  - deleting edid decoder and its debugfs, suggested by Dmitry Baryshkov.
  - using debugfs_init() callback, suggested by Dmitry Baryshkov.
  - splittting colorbar and debugfs in different patches, suggested by Dmitry Baryshkov.
  - optimizing the description in commit message, suggested by Dmitry Baryshkov.
  - add mdelay(100) comments, suggested by Dmitry Baryshkov.
  - deleting display enable in hpd event, suggested by Dmitry Baryshkov.
---

Baihan Li (8):
  drm/hisilicon/hibmc: Restructuring the header dp_reg.h
  drm/hisilicon/hibmc: Add dp serdes cfg to adjust serdes rate, voltage
    and pre-emphasis
  drm/hisilicon/hibmc: Add dp serdes cfg in dp process
  drm/hisilicon/hibmc: Refactor the member of drm_aux in struct hibmc_dp
  drm/hisilicon/hibmc: Getting connector info and EDID by using AUX
    channel
  drm/hisilicon/hibmc: Add colorbar-cfg feature and its debugfs file
  drm/hisilicon/hibmc: Enable this hot plug detect of irq feature
  drm/hisilicon/hibmc: Add MSI irq getting and requesting for HPD

 1                                             |   0
 drivers/gpu/drm/hisilicon/hibmc/Makefile      |   3 +-
 drivers/gpu/drm/hisilicon/hibmc/dp/dp_aux.c   |  16 ++-
 drivers/gpu/drm/hisilicon/hibmc/dp/dp_comm.h  |  10 +-
 .../gpu/drm/hisilicon/hibmc/dp/dp_config.h    |   2 +
 drivers/gpu/drm/hisilicon/hibmc/dp/dp_hw.c    |  91 +++++++++++-
 drivers/gpu/drm/hisilicon/hibmc/dp/dp_hw.h    |  36 +++++
 drivers/gpu/drm/hisilicon/hibmc/dp/dp_link.c  |  57 +++++---
 drivers/gpu/drm/hisilicon/hibmc/dp/dp_reg.h   | 130 +++++++++++++-----
 .../gpu/drm/hisilicon/hibmc/dp/dp_serdes.c    |  71 ++++++++++
 .../drm/hisilicon/hibmc/hibmc_drm_debugfs.c   | 104 ++++++++++++++
 .../gpu/drm/hisilicon/hibmc/hibmc_drm_dp.c    |  67 ++++++++-
 .../gpu/drm/hisilicon/hibmc/hibmc_drm_drv.c   |  88 +++++++++---
 .../gpu/drm/hisilicon/hibmc/hibmc_drm_drv.h   |  12 ++
 .../gpu/drm/hisilicon/hibmc/hibmc_drm_vdac.c  |   3 +
 15 files changed, 601 insertions(+), 89 deletions(-)
 create mode 100644 1
 create mode 100644 drivers/gpu/drm/hisilicon/hibmc/dp/dp_serdes.c
 create mode 100644 drivers/gpu/drm/hisilicon/hibmc/hibmc_drm_debugfs.c