1 /* SPDX-License-Identifier: GPL-2.0-or-later */
5 * (Tentative) USB Audio Driver for ALSA
7 * Copyright (c) 2002 by Takashi Iwai <tiwai@suse.de>
10 /* handling of USB vendor/product ID pairs as 32-bit numbers */
11 #define USB_ID(vendor, product) (((vendor) << 16) | (product))
12 #define USB_ID_VENDOR(id) ((id) >> 16)
13 #define USB_ID_PRODUCT(id) ((u16)(id))
20 struct media_intf_devnode;
22 #define MAX_CARD_INTERFACES 16
24 struct snd_usb_audio {
26 struct usb_device *dev;
27 struct snd_card *card;
28 struct usb_interface *intf[MAX_CARD_INTERFACES];
32 unsigned int system_suspend;
36 wait_queue_head_t shutdown_wait;
37 unsigned int quirk_flags;
38 unsigned int need_delayed_register:1; /* warn for delayed registration */
40 int num_suspended_intf;
41 int sample_rate_read_error;
43 int badd_profile; /* UAC3 BADD profile */
45 struct list_head pcm_list; /* list of pcm streams */
46 struct list_head ep_list; /* list of audio-related endpoints */
47 struct list_head iface_ref_list; /* list of interface refcounts */
50 struct list_head midi_list; /* list of midi interfaces */
52 struct list_head mixer_list; /* list of mixer interfaces */
54 int setup; /* from the 'device_setup' module param */
55 bool generic_implicit_fb; /* from the 'implicit_fb' module param */
56 bool autoclock; /* from the 'autoclock' module param */
58 struct usb_host_interface *ctrl_intf; /* the audio control interface */
59 struct media_device *media_dev;
60 struct media_intf_devnode *ctl_intf_media_devnode;
63 #define USB_AUDIO_IFACE_UNUSED ((void *)-1L)
65 #define usb_audio_err(chip, fmt, args...) \
66 dev_err(&(chip)->dev->dev, fmt, ##args)
67 #define usb_audio_warn(chip, fmt, args...) \
68 dev_warn(&(chip)->dev->dev, fmt, ##args)
69 #define usb_audio_info(chip, fmt, args...) \
70 dev_info(&(chip)->dev->dev, fmt, ##args)
71 #define usb_audio_dbg(chip, fmt, args...) \
72 dev_dbg(&(chip)->dev->dev, fmt, ##args)
75 * Information about devices with broken descriptors
78 /* special values for .ifnum */
79 #define QUIRK_NODEV_INTERFACE -3 /* return -ENODEV */
80 #define QUIRK_NO_INTERFACE -2
81 #define QUIRK_ANY_INTERFACE -1
84 QUIRK_IGNORE_INTERFACE,
87 QUIRK_MIDI_STANDARD_INTERFACE,
88 QUIRK_MIDI_FIXED_ENDPOINT,
100 QUIRK_AUDIO_STANDARD_INTERFACE,
101 QUIRK_AUDIO_FIXED_ENDPOINT,
102 QUIRK_AUDIO_EDIROL_UAXX,
103 QUIRK_AUDIO_STANDARD_MIXER,
104 QUIRK_SETUP_FMT_AFTER_RESUME,
105 QUIRK_SETUP_DISABLE_AUTOSUSPEND,
110 struct snd_usb_audio_quirk {
111 const char *vendor_name;
112 const char *product_name;
118 #define combine_word(s) ((*(s)) | ((unsigned int)(s)[1] << 8))
119 #define combine_triple(s) (combine_word(s) | ((unsigned int)(s)[2] << 16))
120 #define combine_quad(s) (combine_triple(s) | ((unsigned int)(s)[3] << 24))
122 int snd_usb_lock_shutdown(struct snd_usb_audio *chip);
123 void snd_usb_unlock_shutdown(struct snd_usb_audio *chip);
125 extern bool snd_usb_use_vmalloc;
126 extern bool snd_usb_skip_validation;
129 * Driver behavior quirk flags, stored in chip->quirk_flags
131 * QUIRK_FLAG_GET_SAMPLE_RATE:
132 * Skip reading sample rate for devices, as some devices behave inconsistently
134 * QUIRK_FLAG_SHARE_MEDIA_DEVICE:
135 * Create Media Controller API entries
136 * QUIRK_FLAG_ALIGN_TRANSFER:
137 * Allow alignment on audio sub-slot (channel samples) rather than on audio
138 * slots (audio frames)
140 * Add length specifier to transfers
141 * QUIRK_FLAG_PLAYBACK_FIRST:
142 * Start playback stream at first even in implement feedback mode
143 * QUIRK_FLAG_SKIP_CLOCK_SELECTOR:
144 * Skip clock selector setup; the device may reset to invalid state
145 * QUIRK_FLAG_IGNORE_CLOCK_SOURCE:
146 * Ignore errors from clock source search; i.e. hardcoded clock
147 * QUIRK_FLAG_ITF_USB_DSD_DAC:
148 * Indicates the device is for ITF-USB DSD based DACs that need a vendor cmd
149 * to switch between PCM and native DSD mode
150 * QUIRK_FLAG_CTL_MSG_DELAY:
151 * Add a delay of 20ms at each control message handling
152 * QUIRK_FLAG_CTL_MSG_DELAY_1M:
153 * Add a delay of 1-2ms at each control message handling
154 * QUIRK_FLAG_CTL_MSG_DELAY_5M:
155 * Add a delay of 5-6ms at each control message handling
156 * QUIRK_FLAG_IFACE_DELAY:
157 * Add a delay of 50ms at each interface setup
158 * QUIRK_FLAG_VALIDATE_RATES:
159 * Perform sample rate validations at probe
162 #define QUIRK_FLAG_GET_SAMPLE_RATE (1U << 0)
163 #define QUIRK_FLAG_SHARE_MEDIA_DEVICE (1U << 1)
164 #define QUIRK_FLAG_ALIGN_TRANSFER (1U << 2)
165 #define QUIRK_FLAG_TX_LENGTH (1U << 3)
166 #define QUIRK_FLAG_PLAYBACK_FIRST (1U << 4)
167 #define QUIRK_FLAG_SKIP_CLOCK_SELECTOR (1U << 5)
168 #define QUIRK_FLAG_IGNORE_CLOCK_SOURCE (1U << 6)
169 #define QUIRK_FLAG_ITF_USB_DSD_DAC (1U << 7)
170 #define QUIRK_FLAG_CTL_MSG_DELAY (1U << 8)
171 #define QUIRK_FLAG_CTL_MSG_DELAY_1M (1U << 9)
172 #define QUIRK_FLAG_CTL_MSG_DELAY_5M (1U << 10)
173 #define QUIRK_FLAG_IFACE_DELAY (1U << 11)
174 #define QUIRK_FLAG_VALIDATE_RATES (1U << 12)
176 #endif /* __USBAUDIO_H */