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) (((unsigned int)(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 */
41 int num_suspended_intf;
42 int sample_rate_read_error;
44 int badd_profile; /* UAC3 BADD profile */
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 */
49 struct list_head clock_ref_list; /* list of clock refcounts */
52 unsigned int num_rawmidis; /* number of created rawmidi devices */
53 struct list_head midi_list; /* list of midi interfaces */
54 struct list_head midi_v2_list; /* list of MIDI 2 interfaces */
56 struct list_head mixer_list; /* list of mixer interfaces */
58 int setup; /* from the 'device_setup' module param */
59 bool generic_implicit_fb; /* from the 'implicit_fb' module param */
60 bool autoclock; /* from the 'autoclock' module param */
62 bool lowlatency; /* from the 'lowlatency' module param */
63 struct usb_host_interface *ctrl_intf; /* the audio control interface */
64 struct media_device *media_dev;
65 struct media_intf_devnode *ctl_intf_media_devnode;
68 #define USB_AUDIO_IFACE_UNUSED ((void *)-1L)
70 #define usb_audio_err(chip, fmt, args...) \
71 dev_err(&(chip)->dev->dev, fmt, ##args)
72 #define usb_audio_err_ratelimited(chip, fmt, args...) \
73 dev_err_ratelimited(&(chip)->dev->dev, fmt, ##args)
74 #define usb_audio_warn(chip, fmt, args...) \
75 dev_warn(&(chip)->dev->dev, fmt, ##args)
76 #define usb_audio_info(chip, fmt, args...) \
77 dev_info(&(chip)->dev->dev, fmt, ##args)
78 #define usb_audio_dbg(chip, fmt, args...) \
79 dev_dbg(&(chip)->dev->dev, fmt, ##args)
82 * Information about devices with broken descriptors
85 /* special values for .ifnum */
86 #define QUIRK_NODEV_INTERFACE -3 /* return -ENODEV */
87 #define QUIRK_NO_INTERFACE -2
88 #define QUIRK_ANY_INTERFACE -1
91 QUIRK_IGNORE_INTERFACE,
94 QUIRK_MIDI_STANDARD_INTERFACE,
95 QUIRK_MIDI_FIXED_ENDPOINT,
100 QUIRK_MIDI_RAW_BYTES,
107 QUIRK_AUDIO_STANDARD_INTERFACE,
108 QUIRK_AUDIO_FIXED_ENDPOINT,
109 QUIRK_AUDIO_EDIROL_UAXX,
110 QUIRK_AUDIO_STANDARD_MIXER,
115 struct snd_usb_audio_quirk {
116 const char *vendor_name;
117 const char *product_name;
123 #define combine_word(s) ((*(s)) | ((unsigned int)(s)[1] << 8))
124 #define combine_triple(s) (combine_word(s) | ((unsigned int)(s)[2] << 16))
125 #define combine_quad(s) (combine_triple(s) | ((unsigned int)(s)[3] << 24))
127 int snd_usb_lock_shutdown(struct snd_usb_audio *chip);
128 void snd_usb_unlock_shutdown(struct snd_usb_audio *chip);
130 extern bool snd_usb_use_vmalloc;
131 extern bool snd_usb_skip_validation;
134 * Driver behavior quirk flags, stored in chip->quirk_flags
136 * QUIRK_FLAG_GET_SAMPLE_RATE:
137 * Skip reading sample rate for devices, as some devices behave inconsistently
139 * QUIRK_FLAG_SHARE_MEDIA_DEVICE:
140 * Create Media Controller API entries
141 * QUIRK_FLAG_ALIGN_TRANSFER:
142 * Allow alignment on audio sub-slot (channel samples) rather than on audio
143 * slots (audio frames)
145 * Add length specifier to transfers
146 * QUIRK_FLAG_PLAYBACK_FIRST:
147 * Start playback stream at first even in implement feedback mode
148 * QUIRK_FLAG_SKIP_CLOCK_SELECTOR:
149 * Skip clock selector setup; the device may reset to invalid state
150 * QUIRK_FLAG_IGNORE_CLOCK_SOURCE:
151 * Ignore errors from clock source search; i.e. hardcoded clock
152 * QUIRK_FLAG_ITF_USB_DSD_DAC:
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
155 * QUIRK_FLAG_CTL_MSG_DELAY:
156 * Add a delay of 20ms at each control message handling
157 * QUIRK_FLAG_CTL_MSG_DELAY_1M:
158 * Add a delay of 1-2ms at each control message handling
159 * QUIRK_FLAG_CTL_MSG_DELAY_5M:
160 * Add a delay of 5-6ms at each control message handling
161 * QUIRK_FLAG_IFACE_DELAY:
162 * Add a delay of 50ms at each interface setup
163 * QUIRK_FLAG_VALIDATE_RATES:
164 * Perform sample rate validations at probe
165 * QUIRK_FLAG_DISABLE_AUTOSUSPEND:
166 * Disable runtime PM autosuspend
167 * QUIRK_FLAG_IGNORE_CTL_ERROR:
168 * Ignore errors for mixer access
169 * QUIRK_FLAG_DSD_RAW:
170 * Support generic DSD raw U32_BE format
171 * QUIRK_FLAG_SET_IFACE_FIRST:
172 * Set up the interface at first like UAC1
173 * QUIRK_FLAG_GENERIC_IMPLICIT_FB
174 * Apply the generic implicit feedback sync mode (same as implicit_fb=1 option)
175 * QUIRK_FLAG_SKIP_IMPLICIT_FB
176 * Don't apply implicit feedback sync mode
177 * QUIRK_FLAG_IFACE_SKIP_CLOSE
178 * Don't closed interface during setting sample rate
179 * QUIRK_FLAG_FORCE_IFACE_RESET
180 * Force an interface reset whenever stopping & restarting a stream
182 * QUIRK_FLAG_FIXED_RATE
183 * Do not set PCM rate (frequency) when only one rate is available
184 * for the given endpoint.
187 #define QUIRK_FLAG_GET_SAMPLE_RATE (1U << 0)
188 #define QUIRK_FLAG_SHARE_MEDIA_DEVICE (1U << 1)
189 #define QUIRK_FLAG_ALIGN_TRANSFER (1U << 2)
190 #define QUIRK_FLAG_TX_LENGTH (1U << 3)
191 #define QUIRK_FLAG_PLAYBACK_FIRST (1U << 4)
192 #define QUIRK_FLAG_SKIP_CLOCK_SELECTOR (1U << 5)
193 #define QUIRK_FLAG_IGNORE_CLOCK_SOURCE (1U << 6)
194 #define QUIRK_FLAG_ITF_USB_DSD_DAC (1U << 7)
195 #define QUIRK_FLAG_CTL_MSG_DELAY (1U << 8)
196 #define QUIRK_FLAG_CTL_MSG_DELAY_1M (1U << 9)
197 #define QUIRK_FLAG_CTL_MSG_DELAY_5M (1U << 10)
198 #define QUIRK_FLAG_IFACE_DELAY (1U << 11)
199 #define QUIRK_FLAG_VALIDATE_RATES (1U << 12)
200 #define QUIRK_FLAG_DISABLE_AUTOSUSPEND (1U << 13)
201 #define QUIRK_FLAG_IGNORE_CTL_ERROR (1U << 14)
202 #define QUIRK_FLAG_DSD_RAW (1U << 15)
203 #define QUIRK_FLAG_SET_IFACE_FIRST (1U << 16)
204 #define QUIRK_FLAG_GENERIC_IMPLICIT_FB (1U << 17)
205 #define QUIRK_FLAG_SKIP_IMPLICIT_FB (1U << 18)
206 #define QUIRK_FLAG_IFACE_SKIP_CLOSE (1U << 19)
207 #define QUIRK_FLAG_FORCE_IFACE_RESET (1U << 20)
208 #define QUIRK_FLAG_FIXED_RATE (1U << 21)
210 #endif /* __USBAUDIO_H */