From: Takashi Iwai <tiwai@suse.de>
To: Mike Oliphant <oliphant@nostatic.org>
Cc: alsa-devel@alsa-project.org
Subject: Re: Support for NUX MG-300 USB interface
Date: Mon, 18 Jan 2021 22:59:08 +0100 [thread overview]
Message-ID: <s5him7thpoz.wl-tiwai@suse.de> (raw)
In-Reply-To: <CAHXb3be9EpEtaEc0iH06wmLMhyizkV7arvgxsT2bWK=aJHKVLA@mail.gmail.com>
On Mon, 18 Jan 2021 22:15:26 +0100,
Mike Oliphant wrote:
>
> Progress - thanks for the patch!
>
> That got rid of the clock errors, and the the device now reports a 48000
> sample rate, which is correct.
>
> Unfortunately, it still isn't working properly. Playback doesn't seem to work
> at all. Capture kind of works - it does record, but the audio is extremely
> noisy.
>
> Here is the current dmesg output when the device is connected.
>
> Notable is the error "No valid sample rate available for 1:1, assuming a
> firmware bug".
>
> Also notable is "1:1 Set sample rate 48000, clock 40" - where "40" is the id
> of the clock selector - "41" is the id of the actual clock source. So maybe
> something is still getting wired up wrong?
OK, how about the one below instead?
Takashi
--- a/sound/usb/clock.c
+++ b/sound/usb/clock.c
@@ -298,6 +298,12 @@ static int __uac_clock_find_source(struct snd_usb_audio *chip,
if (selector) {
int ret, i, cur;
+ if (selector->bNrInPins == 1) {
+ uac_clock_selector_set_val(chip, selector->bClockID, 1);
+ ret = 1;
+ goto find_source;
+ }
+
/* the entity ID we are looking for is a selector.
* find out what it currently selects */
ret = uac_clock_selector_get_val(chip, selector->bClockID);
@@ -314,6 +320,7 @@ static int __uac_clock_find_source(struct snd_usb_audio *chip,
return -EINVAL;
}
+ find_source:
cur = ret;
ret = __uac_clock_find_source(chip, fmt,
selector->baCSourceID[ret - 1],
next prev parent reply other threads:[~2021-01-18 22:00 UTC|newest]
Thread overview: 16+ messages / expand[flat|nested] mbox.gz Atom feed top
2021-01-17 18:56 Support for NUX MG-300 USB interface Mike Oliphant
2021-01-18 7:43 ` Takashi Iwai
2021-01-18 16:33 ` Mike Oliphant
2021-01-18 17:54 ` Mike Oliphant
2021-01-18 19:19 ` Takashi Iwai
2021-01-18 21:15 ` Mike Oliphant
2021-01-18 21:59 ` Takashi Iwai [this message]
2021-01-19 0:26 ` Mike Oliphant
2021-01-19 9:05 ` Takashi Iwai
2021-01-19 17:40 ` Mike Oliphant
2021-01-20 14:33 ` Takashi Iwai
2021-01-20 21:17 ` Mike Oliphant
2021-01-20 21:38 ` Takashi Iwai
2021-01-20 21:47 ` Mike Oliphant
2021-01-21 19:04 ` Mike Oliphant
2021-01-21 20:18 ` Mike Oliphant
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