On Sun, 12 Jan 2020 00:34:46 +0100, Alexander Tsoy wrote:
Add delay to make sure that audio urbs are not sent too early. Otherwise the device hangs. Windows driver makes ~2s delay, so use about the same time delay value.
snd_usb_apply_boot_quirk() is called 3 times for my MOTU M4, which is an overkill. Thus a quirk that is called only once is implemented.
Also send two vendor-specific control messages before and after the delay. This behaviour is blindly copied from the Windows driver.
Signed-off-by: Alexander Tsoy alexander@tsoy.me
The code change looks OK, but I get a lot of errors from scripts/checkpatch.pl regarding the spaces. Could you resubmit with those fixes?
thanks,
Takashi
sound/usb/card.c | 4 ++++ sound/usb/quirks.c | 38 ++++++++++++++++++++++++++++++++++++++ sound/usb/quirks.h | 5 +++++ 3 files changed, 47 insertions(+)
diff --git a/sound/usb/card.c b/sound/usb/card.c index 9f743ebae615..2f582ac7cf78 100644 --- a/sound/usb/card.c +++ b/sound/usb/card.c @@ -600,6 +600,10 @@ static int usb_audio_probe(struct usb_interface *intf, } } if (! chip) {
err = snd_usb_apply_boot_quirk_once(dev, intf, quirk, id);if (err < 0)return err;- /* it's a fresh one.
*/
- now look for an empty slot and create a new card instance
diff --git a/sound/usb/quirks.c b/sound/usb/quirks.c index 82184036437b..c93c53126243 100644 --- a/sound/usb/quirks.c +++ b/sound/usb/quirks.c @@ -1113,6 +1113,31 @@ static int snd_usb_motu_microbookii_boot_quirk(struct usb_device *dev) return err; }
+static int snd_usb_motu_m_series_boot_quirk(struct usb_device *dev) +{
- int ret;
- if (snd_usb_pipe_sanity_check(dev, usb_sndctrlpipe(dev, 0)))
return -EINVAL;- ret = usb_control_msg(dev, usb_sndctrlpipe(dev, 0),
1, USB_TYPE_VENDOR | USB_RECIP_DEVICE,0x0, 0, NULL, 0, 1000);- if (ret < 0)
return ret;- msleep(2000);
- ret = usb_control_msg(dev, usb_sndctrlpipe(dev, 0),
1, USB_TYPE_VENDOR | USB_RECIP_DEVICE,0x20, 0, NULL, 0, 1000);- if (ret < 0)
return ret;- return 0;
+}
/*
- Setup quirks
*/ @@ -1297,6 +1322,19 @@ int snd_usb_apply_boot_quirk(struct usb_device *dev, return 0; }
+int snd_usb_apply_boot_quirk_once(struct usb_device *dev,
struct usb_interface *intf,const struct snd_usb_audio_quirk *quirk,unsigned int id)+{
- switch (id) {
- case USB_ID(0x07fd, 0x0008): /* MOTU M Series */
return snd_usb_motu_m_series_boot_quirk(dev);- }
- return 0;
+}
/*
- check if the device uses big-endian samples
*/ diff --git a/sound/usb/quirks.h b/sound/usb/quirks.h index a80e0ddd0736..fa83a98ad7bb 100644 --- a/sound/usb/quirks.h +++ b/sound/usb/quirks.h @@ -20,6 +20,11 @@ int snd_usb_apply_boot_quirk(struct usb_device *dev, const struct snd_usb_audio_quirk *quirk, unsigned int usb_id);
+int snd_usb_apply_boot_quirk_once(struct usb_device *dev,
struct usb_interface *intf,const struct snd_usb_audio_quirk *quirk,unsigned int usb_id);void snd_usb_set_format_quirk(struct snd_usb_substream *subs, struct audioformat *fmt);
-- 2.24.1