[RFC][PATCH v4 0/4] design a way to change audio Jack state by software

[Hui Wang]

On 1/20/21 10:47 PM, Takashi Iwai wrote:
> On Wed, 20 Jan 2021 09:58:25 +0100,
> Hui Wang wrote:
>> Hi Takashi,
>>
>> Looks like no more comment from others, what is your opinion on the
>> patchset, is it ok to merge or need to do some change?
> I think the basic concept is OK.  Maybe we want to have a Kconfig to
> enable/disable this feature for users who want a slim kernel.
>
> And, it'd be better to reorganize the series.  It's not necessarily
> incremental form; e.g. patch 2 doesn't have to be an individual
> patch.
>
> I'll take a deeper look for each patch, too.
>
>
> thanks,
>
> Takashi
>
Got it, will address all comments, and will send a v5 to review soon.

Thanks,

Hui.

>
>
>
>> Thanks,
>>
>> Hui.
>>
>> On 1/11/21 9:05 PM, Hui Wang wrote:
>>> the changes in the v4:
>>>    - change the sound-core to sound and change the sound_core_debugfs_root
>>>      to sound_debugfs_root in the 0001-xxx.patch
>>>    - change kzalloc/kfree to kvzalloc/kvfree in the debugfs fops for
>>>      0001-xxx.patch and 0003-xxx.patch
>>>    - And if needed, I could squash 4 patches into 1 patch before merging.
>>>
>>> the changes in the v3 (for easy to review, divide change into 4 patches):
>>>    - address the comment about the snd_jack_report() and _snd_jack_report(),
>>>      the v2 design is hard to understand and is hard to review, in the v3,
>>>      separate the jack_report to snd_jack_report() and snd_jack_inject_report(),
>>>      hw jack events call snd_jack_report() as before, if a jack contains multi
>>>      jack_kctl and the jack_kctl's sw_inject is enabled, the status and the
>>>      related input-dev's events will not be reproted. The injection events call
>>>      snd_jack_inject_report(). This change is squashed to 0001-xxx.patch,  the
>>>      rest part of 0001-xxx.patch is same as v2.
>>>
>>>    - address the comment about folders'name in the 0002-xxx.patch, so far, drop
>>>      the '/', ',', '=' and ' ' from the folders' name.
>>>
>>>    - address the comment about adding more debugfs nodes in the 0003-xxx.patch,
>>>      it adds kctl_id, mask_bits, status and type.
>>>
>>>    - address the comment about save-n-restore jack's hw status in the
>>>      0004-xxx.patch, adding a hw_status_cache and save the last reported jack
>>>      hw event, once the sw_inject is disabled, will restore all jack_kctl's
>>>      state under the same snd_jack with hw_status_cache.
>>> [snip]
>>>
>>>
>>> the changes in the V2:
>>>    - using debugfs instead of sysfs
>>>    - using jack_ctrl to create a folder instead of snd_jack, since ASoC drivers
>>>      could create multi jack_ctrls within a snd_jack
>>>    - create a folder for each jack_ctrl instead for all jack_ctrls
>>> [ snip ]
>>>
>>>
>>> Hui Wang (4):
>>>     alsa: jack: implement software jack injection via debugfs
>>>     alsa: jack: adjust jack_kctl debugfs folder's name
>>>     alsa: jack: add more jack_kctl debugfs nodes
>>>     alsa: jack: implement save-and-restore for jack's hw status
>>>
>>>    include/sound/core.h |   2 +
>>>    include/sound/jack.h |   1 +
>>>    sound/core/init.c    |   7 +
>>>    sound/core/jack.c    | 352 ++++++++++++++++++++++++++++++++++++++++++-
>>>    sound/core/sound.c   |   8 +
>>>    5 files changed, 366 insertions(+), 4 deletions(-)
>>>