linux-kernel - Re: [PATCH v9 drm-dp 0/4] Fix hibmc driver bugs

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Message-ID: <15381f48-35c8-497c-908d-03fc16a62b08@huawei.com>
Date: Fri, 24 Oct 2025 17:00:19 +0800
From: Yongbang Shi <shiyongbang@...wei.com>
To: <xinliang.liu@...aro.org>, <tiantao6@...ilicon.com>,
	<maarten.lankhorst@...ux.intel.com>, <mripard@...nel.org>,
	<tzimmermann@...e.de>, <airlied@...il.com>, <daniel@...ll.ch>,
	<kong.kongxinwei@...ilicon.com>, <dmitry.baryshkov@....qualcomm.com>
CC: <liangjian010@...wei.com>, <chenjianmin@...wei.com>,
	<fengsheng5@...wei.com>, <libaihan@...wei.com>, <shenjian15@...wei.com>,
	<shaojijie@...wei.com>, <dri-devel@...ts.freedesktop.org>,
	<linux-kernel@...r.kernel.org>, <shiyongbang@...wei.com>
Subject: Re: [PATCH v9 drm-dp 0/4] Fix hibmc driver bugs

Friendly ping, just a gentle reminder since this series has been around a while.

Thanks,
Baihan.


> From: Baihan Li <libaihan@...wei.com>
>
> There are some bugfix for hibmc-drm driver.
> ---
> ChangeLog:
> v8 -> v9:
>    - refactor the hibmc_dp_check_hpd_status(), and add some checks
>      in dp_encoder_enable.
> v7 -> v8:
>    - fix build errors reported by kernel test robot <lkp@...el.com>
>      Closes: https://lore.kernel.org/oe-kbuild-all/202509241625.o4mNleVb-lkp@intel.com/
> v6 -> v7:
>    - add the check about branch devices, suggested by Dmitry Baryshkov.
> v5 -> v6:
>    - use HPD status in DP detect_ctx(), suggested by Dmitry Baryshkov.
> v4 -> v5:
>    - Because some of patches are applied, this series only contains the rest of them.
>    - fix the commit and DP detect_ctx(), suggested by Dmitry Baryshkov.
>    - fix bugfix commit ID, suggested by Dmitry Baryshkov.
>    - remove the 08/11 patch, I'll add in next series.
>    - combined 9 and 11 patch together, suggested by Dmitry Baryshkov.
> v3 -> v4:
>    - remove link training process in hibmc_dp_detect(), suggested by Dmitry Baryshkov.
>    - remove if (dev->registered), suggested by Dmitry Baryshkov.
>    - remove non-related changes, suggested by Dmitry Baryshkov.
>    - Remove the clock check, suggested by Dmitry Baryshkov.
>    - ( I'll add them in next series after redesigning this part)
>    - add KVM edid in commit message, suggested by Dmitry Baryshkov.
>    - fix magic values, suggested by Dmitry Baryshkov.
>    - fix the commit subjects, suggested by Dmitry Baryshkov.
> v2 -> v3:
>    - fix hibmc_connector_get_modes() and hibmc_vdac_detect() to realize BMC KVM, suggested by Dmitry Baryshkov.
>    - fix the issue commit ID, suggested by Dmitry Baryshkov.
>    - split into 2 commits, suggested by Dmitry Baryshkov.
>    - add more comments in commit log, suggested by Dmitry Baryshkov.
> ---
>
> Baihan Li (4):
>    drm/hisilicon/hibmc: fix dp probabilistical detect errors after HPD
>      irq
>    drm/hisilicon/hibmc: add dp mode valid check
>    drm/hisilicon/hibmc: fix no showing problem with loading hibmc
>      manually
>    drm/hisilicon/hibmc: Adding reset colorbar cfg in dp init.
>
>   drivers/gpu/drm/hisilicon/hibmc/dp/dp_comm.h  |  4 +
>   .../gpu/drm/hisilicon/hibmc/dp/dp_config.h    |  2 +
>   drivers/gpu/drm/hisilicon/hibmc/dp/dp_hw.c    | 40 +++++++++-
>   drivers/gpu/drm/hisilicon/hibmc/dp/dp_hw.h    |  8 ++
>   drivers/gpu/drm/hisilicon/hibmc/dp/dp_reg.h   |  3 +
>   .../gpu/drm/hisilicon/hibmc/hibmc_drm_dp.c    | 77 ++++++++++++++++++-
>   6 files changed, 128 insertions(+), 6 deletions(-)
>