[PATCH v3 0/7] drm/bridge_connector: perform HPD enablement automatically

[Neil Armstrong]

Geert,

On 07/02/2023 14:30, neil.armstrong at linaro.org wrote:
> On 07/02/2023 11:19, Geert Uytterhoeven wrote:
>> Hi Neil,
>>
>> On Tue, Feb 7, 2023 at 11:02 AM Geert Uytterhoeven <geert at linux-m68k.org> wrote:
>>> On Tue, Feb 7, 2023 at 10:59 AM Neil Armstrong
>>> <neil.armstrong at linaro.org> wrote:
>>>> On 07/02/2023 10:40, Geert Uytterhoeven wrote:
>>>>> On Tue, Jan 10, 2023 at 5:37 PM Dmitry Baryshkov
>>>>> <dmitry.baryshkov at linaro.org> wrote:
>>>>>> On 10/01/2023 08:57, Laurentiu Palcu wrote:
>>>>>>> On Mon, Jan 09, 2023 at 10:26:28PM +0200, Dmitry Baryshkov wrote:
>>>>>>>> On 09/01/2023 18:21, Laurentiu Palcu wrote:
>>>>>>>>> It looks like there are some issues with this patchset... :/ I just
>>>>>>>>> fetched the drm-tip and, with these patches included, the "Hot plug
>>>>>>>>> detection already enabled" warning is back for i.MX DCSS.
>>>>>>>>
>>>>>>>> Could you please provide a backtrace?
>>>>>>>
>>>>>>> Sure, see below:
>>>>>>
>>>>>> I wondered, why didn't I see this on msm, my main target nowadays. The
>>>>>> msm driver is calling msm_kms_helper_poll_init() after initializing
>>>>>> fbdev, so all previous kms_helper_poll_enable() calls return early.
>>>>>>
>>>>>> I think I have the fix ready. Let me test it locally before posting.
>>>>>
>>>>> Is this fix available?
>>>>> Do you have a lore link?
>>>>
>>>> The fix at [1] has been applied on 2023-01-26
>>>>
>>>> [1] https://lore.kernel.org/all/20230124104548.3234554-1-dmitry.baryshkov@linaro.org/
>>>
>>> Applied where? linux-next does not have it.
>>
>> commit cbf143b282c64e59
>> ("drm/probe_helper: extract two helper functions") in next-20230127
>> next-20230130 next-20230131
>> commit d33a54e3991dfce8
>> ("drm/probe_helper: sort out poll_running vs poll_enabled") in
>> next-20230127 next-20230130 next-20230131
>>
>> but not in any later version?
> 
> $ git log --oneline --author=dmitry next-20230207 drivers/gpu/drm/drm_probe_helper.c
> c8268795c9a9 drm/probe-helper: enable and disable HPD on connectors
> 78b991ccfa64 drm/poll-helper: merge drm_kms_helper_poll_disable() and _fini()
> 
> $ cat Next/SHA1s | grep drm
> drm-fixes       4ec5183ec48656cec489c49f989c508b68b518e3
> drm-intel-fixes 4c7b9344cadbed477372c75e3c0a8cfd542f5990
> drm-misc-fixes  8f20660f053cefd4693e69cfff9cf58f4f7c4929
> drm             1c0db6d84f8e0ac8f14178f13250e36ebcf457ee
> drm-misc        d20a8f409259f1782f080b434054854020878f23
> drm-intel       155c6b16eec2eaaaf6c71abf2d5e71641770d7ba
> drm-tegra       b9930311641cf2ed905a84aabe27e8f3868aee4a
> drm-msm         dbd7a2a941b8cbf9e5f79a777ed9fe0090eebb61
> drm-msm-lumag   1d233b1cb149ec78c20fac58331b27bb460f9558
> imx-drm         927d8fd465adbaaad6cce82f840d489d7c378f29
> 
> so weren't merged into drm-misc, I'll ping Thomas & Maxime on irc.

Thomas just told me the commits were cherry-picked into drm-misc-next-fixes
and should appear on tomorrow's linux-next tree.

https://cgit.freedesktop.org/drm/drm-misc/commit/?h=drm-misc-next-fixes&id=91f43949662c9eb4a443203a188e806df8290bc9
https://cgit.freedesktop.org/drm/drm-misc/commit/?h=drm-misc-next-fixes&id=a4e771729a51168bc36317effaa9962e336d4f5e

Neil

> 
> Neil
> 
>>
>> Gr{oetje,eeting}s,
>>
>>                          Geert
>>
>> -- 
>> Geert Uytterhoeven -- There's lots of Linux beyond ia32 -- geert at linux-m68k.org
>>
>> In personal conversations with technical people, I call myself a hacker. But
>> when I'm talking to journalists I just say "programmer" or something like that.
>>                                  -- Linus Torvalds
>