Re: [PATCH v7 drm-dp 0/9] Add HPD, getting EDID, colorbar features in DP function

[Yongbang Shi <shiyongbang@huawei.com>]

> On Wed, Mar 19, 2025 at 11:24:26AM +0800, Yongbang Shi wrote:
>> From: Baihan Li <libaihan@huawei.com>
>>
>> To support DP HPD, edid printing, and colorbar display features based on
>> the Hisislcon DP devices.
>> ---
>> ChangeLog:
>> v6 -> v7:
>>    - add if statement about drm aux in hibmc_dp_connector_get_modes(), suggested by Jani Nikula
> Where was that suggestion? Also, would you please implement his feedback
> regarding drm_edid_read()?

Hi Dmitry,
Thanks for yuor mentioned, I misunderstood his suggestion. I will change to drm_edid_read().
Thanks, Baihan.


>>    v6: https://lore.kernel.org/all/20250310040138.2025715-1-shiyongbang@huawei.com/
>> v5 -> v6:
>>    - fix the DP_SERDES_VOL2_PRE0 value after electrical test.
>>    - move the detect_ctx() to the patch 7/9.
>>    - add detect_ctx with 200ms delay, suggested by Dmitry Baryshkov.
>>    v5: https://lore.kernel.org/all/20250307101640.4003229-1-shiyongbang@huawei.com/
>> v4 -> v5:
>>    - add commit log about hibmc_kms_init(), suggested by Dmitry Baryshkov.
>>    - fix the format of block comments, suggested by Dmitry Baryshkov.
>>    - add hibmc_dp_get_serdes_rate_cfg() to correct transferring serdes cfg.
>>    - separate the vga part commit, suggested by Dmitry Baryshkov.
>>    - remove pci_disable_msi() in hibmc_unload()
>>    v4: https://lore.kernel.org/all/20250305112647.2344438-1-shiyongbang@huawei.com/
>> 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 <lkp@intel.com>
>>      Closes: https://lore.kernel.org/oe-kbuild-all/202502231304.BCzV4Y8D-lkp@intel.com/
>>    v3: https://lore.kernel.org/all/20250222025102.1519798-1-shiyongbang@huawei.com/
>> 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.
>>    v2: https://lore.kernel.org/all/20250210144959.100551-1-shiyongbang@huawei.com/
>> 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.
>>    v1: https://lore.kernel.org/all/20250127032024.1542219-1-shiyongbang@huawei.com/
>> ---
>>
>> Baihan Li (9):
>>    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
>>    drm/hisilicon/hibmc: Add vga connector detect functions
>>
>>   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  |  97 +++++++++----
>>   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    |  78 ++++++++++-
>>   .../gpu/drm/hisilicon/hibmc/hibmc_drm_drv.c   |  87 +++++++++---
>>   .../gpu/drm/hisilicon/hibmc/hibmc_drm_drv.h   |  12 ++
>>   .../gpu/drm/hisilicon/hibmc/hibmc_drm_vdac.c  |   3 +
>>   14 files changed, 638 insertions(+), 102 deletions(-)
>>   create mode 100644 drivers/gpu/drm/hisilicon/hibmc/dp/dp_serdes.c
>>   create mode 100644 drivers/gpu/drm/hisilicon/hibmc/hibmc_drm_debugfs.c
>>
>> -- 
>> 2.33.0
>>