5bff3c470f
[ Upstream commit 73ac9f5e5b ]
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>
Link: https://lore.kernel.org/r/20200112102358.18085-1-alexander@tsoy.me
Signed-off-by: Takashi Iwai <tiwai@suse.de>
Signed-off-by: Sasha Levin <sashal@kernel.org>
55 lines
1.7 KiB
C
55 lines
1.7 KiB
C
/* SPDX-License-Identifier: GPL-2.0 */
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#ifndef __USBAUDIO_QUIRKS_H
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#define __USBAUDIO_QUIRKS_H
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struct audioformat;
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struct snd_usb_endpoint;
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struct snd_usb_substream;
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int snd_usb_create_quirk(struct snd_usb_audio *chip,
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struct usb_interface *iface,
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struct usb_driver *driver,
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const struct snd_usb_audio_quirk *quirk);
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int snd_usb_apply_interface_quirk(struct snd_usb_audio *chip,
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int iface,
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int altno);
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int snd_usb_apply_boot_quirk(struct usb_device *dev,
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struct usb_interface *intf,
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const struct snd_usb_audio_quirk *quirk,
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unsigned int usb_id);
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int snd_usb_apply_boot_quirk_once(struct usb_device *dev,
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struct usb_interface *intf,
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const struct snd_usb_audio_quirk *quirk,
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unsigned int usb_id);
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void snd_usb_set_format_quirk(struct snd_usb_substream *subs,
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struct audioformat *fmt);
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bool snd_usb_get_sample_rate_quirk(struct snd_usb_audio *chip);
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int snd_usb_is_big_endian_format(struct snd_usb_audio *chip,
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struct audioformat *fp);
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void snd_usb_endpoint_start_quirk(struct snd_usb_endpoint *ep);
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void snd_usb_set_interface_quirk(struct usb_device *dev);
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void snd_usb_ctl_msg_quirk(struct usb_device *dev, unsigned int pipe,
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__u8 request, __u8 requesttype, __u16 value,
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__u16 index, void *data, __u16 size);
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int snd_usb_select_mode_quirk(struct snd_usb_substream *subs,
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struct audioformat *fmt);
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u64 snd_usb_interface_dsd_format_quirks(struct snd_usb_audio *chip,
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struct audioformat *fp,
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unsigned int sample_bytes);
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void snd_usb_audioformat_attributes_quirk(struct snd_usb_audio *chip,
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struct audioformat *fp,
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int stream);
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#endif /* __USBAUDIO_QUIRKS_H */
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