From: Hui Wang <hui.wang@canonical.com>
To: Takashi Iwai <tiwai@suse.de>
Cc: alsa-devel@alsa-project.org, stable@vger.kernel.org
Subject: Re: [alsa-devel] [PATCH] ALSA: hda/hdmi - add a parameter to let users decide if checking the eld_valid
Date: Mon, 18 Nov 2019 12:40:52 +0800 [thread overview]
Message-ID: <5af71ae2-2a1e-cb75-cfce-7228c433a957@canonical.com> (raw)
In-Reply-To: <cf190a1c-ec4c-0031-f1af-c3bfdd1acc85@canonical.com>
On 2019/11/12 下午8:21, Hui Wang wrote:
>
> On 2019/11/12 上午12:04, Takashi Iwai wrote:
>> On Mon, 11 Nov 2019 16:33:45 +0100,
>> Takashi Iwai wrote:
>>> On Mon, 11 Nov 2019 15:45:02 +0100,
>>> Hui Wang wrote:
>
[snip]
>> On the second thought, I wonder whether eld_valid would be corrected
>> later by the graphics side at all. If yes, it's a timing issue, and
>> it can be corrected with the repolling.
>>
>> A totally untested patch is below.
>
> I will build a testing kernel with this patch and let the bug reporter
> test it.
>
> Thanks,
>
> Hui.
Hello Takashi,
Tested the patch, it didn't work. The driver always failed to read the
speaker allocation from snd_hdmi_get_eld_ati().
This is the dmesg after adding the patch:
https://launchpadlibrarian.net/451420819/dmesg (both presence and
eld_valid bits are set, but can't get the speaker_alloc)
Regards,
Hui.
>
>
>>
>> thanks,
>>
>> Takashi
>>
>> --- a/sound/pci/hda/patch_hdmi.c
>> +++ b/sound/pci/hda/patch_hdmi.c
>> @@ -1549,19 +1549,25 @@ static bool
>> hdmi_present_sense_via_verbs(struct hdmi_spec_per_pin *per_pin,
>> do_repoll = true;
>> }
>> - if (do_repoll)
>> + do_repoll |= repoll && eld->eld_valid != eld->monitor_present;
>> + if (do_repoll) {
>> schedule_delayed_work(&per_pin->work, msecs_to_jiffies(300));
>> - else
>> + ret = false;
>> + } else {
>> update_eld(codec, per_pin, eld);
>> -
>> - ret = !repoll || !eld->monitor_present || eld->eld_valid;
>> + per_pin->repoll_count = 0;
>> + ret = true;
>> + }
>> jack = snd_hda_jack_tbl_get(codec, pin_nid);
>> if (jack) {
>> jack->block_report = !ret;
>> - jack->pin_sense = (eld->monitor_present && eld->eld_valid) ?
>> - AC_PINSENSE_PRESENCE : 0;
>> + if (ret) {
>> + jack->pin_sense = (eld->monitor_present &&
>> eld->eld_valid) ?
>> + AC_PINSENSE_PRESENCE : 0;
>> + }
>> }
>> +
>> mutex_unlock(&per_pin->lock);
>> return ret;
>> }
>>
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next prev parent reply other threads:[~2019-11-18 4:42 UTC|newest]
Thread overview: 7+ messages / expand[flat|nested] mbox.gz Atom feed top
2019-11-11 14:45 [alsa-devel] [PATCH] ALSA: hda/hdmi - add a parameter to let users decide if checking the eld_valid Hui Wang
2019-11-11 15:33 ` Takashi Iwai
2019-11-11 16:04 ` Takashi Iwai
2019-11-12 12:21 ` Hui Wang
2019-11-18 4:40 ` Hui Wang [this message]
2019-11-18 7:12 ` Takashi Iwai
2019-11-18 7:52 ` Hui Wang
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