| Message ID | 1604995443-30453-1-git-send-email-macpaul.lin@mediatek.com (mailing list archive) |
|---|---|
| State | New, archived |
| Headers | show |
| Series | ALSA: usb-audio: disable 96khz support for HUAWEI USB-C HEADSET | expand |
On Tue, 10 Nov 2020 09:04:03 +0100, Macpaul Lin wrote: > > The HUAWEI USB-C headset (VID:0x12d1, PID:0x3a07) reported it supports > 96khz. However there will be some random issue under 96khz. > Not sure if there is any alternate setting could be applied. > Hence 48khz is suggested to be applied at this moment. > > Signed-off-by: Macpaul Lin <macpaul.lin@mediatek.com> > Signed-off-by: Eddie Hung <eddie.hung@mediatek.com> > --- > sound/usb/format.c | 5 +++++ > 1 file changed, 5 insertions(+) > > diff --git a/sound/usb/format.c b/sound/usb/format.c > index 1b28d01..6f6e79b 100644 > --- a/sound/usb/format.c > +++ b/sound/usb/format.c > @@ -217,6 +217,11 @@ static int parse_audio_format_rates_v1(struct snd_usb_audio *chip, struct audiof > (chip->usb_id == USB_ID(0x041e, 0x4064) || > chip->usb_id == USB_ID(0x041e, 0x4068))) > rate = 8000; > + /* Huawei headset can't support 96kHz fully */ > + if (rate == 96000 && > + chip->usb_id == USB_ID(0x12d1, 0x3a07) && > + le16_to_cpu(udev->descriptor.bcdDevice) == 0x49) This causes the compile error due to the unknown udev. Is this bcdDevice check mandatory? thanks, Takashi
On Tue, 2020-11-10 at 09:12 +0100, Takashi Iwai wrote: > On Tue, 10 Nov 2020 09:04:03 +0100, > Macpaul Lin wrote: > > > > The HUAWEI USB-C headset (VID:0x12d1, PID:0x3a07) reported it supports > > 96khz. However there will be some random issue under 96khz. > > Not sure if there is any alternate setting could be applied. > > Hence 48khz is suggested to be applied at this moment. > > > > Signed-off-by: Macpaul Lin <macpaul.lin@mediatek.com> > > Signed-off-by: Eddie Hung <eddie.hung@mediatek.com> > > --- > > sound/usb/format.c | 5 +++++ > > 1 file changed, 5 insertions(+) > > > > diff --git a/sound/usb/format.c b/sound/usb/format.c > > index 1b28d01..6f6e79b 100644 > > --- a/sound/usb/format.c > > +++ b/sound/usb/format.c > > @@ -217,6 +217,11 @@ static int parse_audio_format_rates_v1(struct snd_usb_audio *chip, struct audiof > > (chip->usb_id == USB_ID(0x041e, 0x4064) || > > chip->usb_id == USB_ID(0x041e, 0x4068))) > > rate = 8000; > > + /* Huawei headset can't support 96kHz fully */ > > + if (rate == 96000 && > > + chip->usb_id == USB_ID(0x12d1, 0x3a07) && > > + le16_to_cpu(udev->descriptor.bcdDevice) == 0x49) > > This causes the compile error due to the unknown udev. > Is this bcdDevice check mandatory? This means firmware version of the headset as far as I know.. Sorry I'll check the compile error and resend later. > > thanks, > > Takashi Thanks Macpaul Lin
On Tue, 10 Nov 2020 09:17:46 +0100, Macpaul Lin wrote: > > On Tue, 2020-11-10 at 09:12 +0100, Takashi Iwai wrote: > > On Tue, 10 Nov 2020 09:04:03 +0100, > > Macpaul Lin wrote: > > > > > > The HUAWEI USB-C headset (VID:0x12d1, PID:0x3a07) reported it supports > > > 96khz. However there will be some random issue under 96khz. > > > Not sure if there is any alternate setting could be applied. > > > Hence 48khz is suggested to be applied at this moment. > > > > > > Signed-off-by: Macpaul Lin <macpaul.lin@mediatek.com> > > > Signed-off-by: Eddie Hung <eddie.hung@mediatek.com> > > > --- > > > sound/usb/format.c | 5 +++++ > > > 1 file changed, 5 insertions(+) > > > > > > diff --git a/sound/usb/format.c b/sound/usb/format.c > > > index 1b28d01..6f6e79b 100644 > > > --- a/sound/usb/format.c > > > +++ b/sound/usb/format.c > > > @@ -217,6 +217,11 @@ static int parse_audio_format_rates_v1(struct snd_usb_audio *chip, struct audiof > > > (chip->usb_id == USB_ID(0x041e, 0x4064) || > > > chip->usb_id == USB_ID(0x041e, 0x4068))) > > > rate = 8000; > > > + /* Huawei headset can't support 96kHz fully */ > > > + if (rate == 96000 && > > > + chip->usb_id == USB_ID(0x12d1, 0x3a07) && > > > + le16_to_cpu(udev->descriptor.bcdDevice) == 0x49) > > > > This causes the compile error due to the unknown udev. > > Is this bcdDevice check mandatory? > > This means firmware version of the headset as far as I know.. OK, then it's useful. > Sorry I'll check the compile error and resend later. I guess the only needed change is to replace udev with chip->dev. thanks, Takashi > > > > > thanks, > > > > Takashi > > Thanks > Macpaul Lin >
diff --git a/sound/usb/format.c b/sound/usb/format.c index 1b28d01..6f6e79b 100644 --- a/sound/usb/format.c +++ b/sound/usb/format.c @@ -217,6 +217,11 @@ static int parse_audio_format_rates_v1(struct snd_usb_audio *chip, struct audiof (chip->usb_id == USB_ID(0x041e, 0x4064) || chip->usb_id == USB_ID(0x041e, 0x4068))) rate = 8000; + /* Huawei headset can't support 96kHz fully */ + if (rate == 96000 && + chip->usb_id == USB_ID(0x12d1, 0x3a07) && + le16_to_cpu(udev->descriptor.bcdDevice) == 0x49) + continue; fp->rate_table[fp->nr_rates] = rate; if (!fp->rate_min || rate < fp->rate_min)