sound/usb/usbaudio.h

1 /* SPDX-License-Identifier: GPL-2.0-or-later */
10 /* handling of USB vendor/product ID pairs as 32-bit numbers */
46 	struct list_head pcm_list;	/* list of pcm streams */
47 	struct list_head ep_list;	/* list of audio-related endpoints */
48 	struct list_head iface_ref_list; /* list of interface refcounts */
63 	struct usb_host_interface *ctrl_intf;	/* the audio control interface */
68 #define USB_AUDIO_IFACE_UNUSED	((void *)-1L)
71 	dev_err(&(chip)->dev->dev, fmt, ##args)
73 	dev_err_ratelimited(&(chip)->dev->dev, fmt, ##args)
75 	dev_warn(&(chip)->dev->dev, fmt, ##args)
77 	dev_info(&(chip)->dev->dev, fmt, ##args)
79 	dev_dbg(&(chip)->dev->dev, fmt, ##args)
86 #define QUIRK_NODEV_INTERFACE		-3	/* return -ENODEV */
87 #define QUIRK_NO_INTERFACE		-2
88 #define QUIRK_ANY_INTERFACE		-1
134  * Driver behavior quirk flags, stored in chip->quirk_flags
137  *  Skip reading sample rate for devices, as some devices behave inconsistently
142  *  Allow alignment on audio sub-slot (channel samples) rather than on audio
153  *  Indicates the device is for ITF-USB DSD based DACs that need a vendor cmd
154  *  to switch between PCM and native DSD mode
158  *  Add a delay of 1-2ms at each control message handling
160  *  Add a delay of 5-6ms at each control message handling
162  *  Add a delay of 50ms at each interface setup
164  *  Perform sample rate validations at probe
172  *  Set up the interface at first like UAC1
178  *  Don't closed interface during setting sample rate
180  *  Force an interface reset whenever stopping & restarting a stream
183  *  Do not set PCM rate (frequency) when only one rate is available