sound/usb/usbaudio.h

   1 /* SPDX-License-Identifier: GPL-2.0-or-later */
   2 #ifndef __USBAUDIO_H
   3 #define __USBAUDIO_H
   4 /*
   5  *   (Tentative) USB Audio Driver for ALSA
   6  *
   7  *   Copyright (c) 2002 by Takashi Iwai <tiwai@suse.de>
   8  */
   9
  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))
  14
  15 /*
  16  *
  17  */
  18
  19 struct media_device;
  20 struct media_intf_devnode;
  21
  22 #define MAX_CARD_INTERFACES     16
  23
  24 struct snd_usb_audio {
  25         int index;
  26         struct usb_device *dev;
  27         struct snd_card *card;
  28         struct usb_interface *intf[MAX_CARD_INTERFACES];
  29         u32 usb_id;
  30         uint16_t quirk_type;
  31         struct mutex mutex;
  32         unsigned int system_suspend;
  33         atomic_t active;
  34         atomic_t shutdown;
  35         atomic_t usage_count;
  36         wait_queue_head_t shutdown_wait;
  37         unsigned int quirk_flags;
  38         unsigned int need_delayed_register:1; /* warn for delayed registration */
  39         int num_interfaces;
  40         int num_suspended_intf;
  41         int sample_rate_read_error;
  42
  43         int badd_profile;               /* UAC3 BADD profile */
  44
  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 */
  48         int pcm_devs;
  49
  50         struct list_head midi_list;     /* list of midi interfaces */
  51
  52         struct list_head mixer_list;    /* list of mixer interfaces */
  53
  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 */
  57
  58         bool lowlatency;                /* from the 'lowlatency' module param */
  59         struct usb_host_interface *ctrl_intf;   /* the audio control interface */
  60         struct media_device *media_dev;
  61         struct media_intf_devnode *ctl_intf_media_devnode;
  62 };
  63
  64 #define USB_AUDIO_IFACE_UNUSED  ((void *)-1L)
  65
  66 #define usb_audio_err(chip, fmt, args...) \
  67         dev_err(&(chip)->dev->dev, fmt, ##args)
  68 #define usb_audio_warn(chip, fmt, args...) \
  69         dev_warn(&(chip)->dev->dev, fmt, ##args)
  70 #define usb_audio_info(chip, fmt, args...) \
  71         dev_info(&(chip)->dev->dev, fmt, ##args)
  72 #define usb_audio_dbg(chip, fmt, args...) \
  73         dev_dbg(&(chip)->dev->dev, fmt, ##args)
  74
  75 /*
  76  * Information about devices with broken descriptors
  77  */
  78
  79 /* special values for .ifnum */
  80 #define QUIRK_NODEV_INTERFACE           -3      /* return -ENODEV */
  81 #define QUIRK_NO_INTERFACE              -2
  82 #define QUIRK_ANY_INTERFACE             -1
  83
  84 enum quirk_type {
  85         QUIRK_IGNORE_INTERFACE,
  86         QUIRK_COMPOSITE,
  87         QUIRK_AUTODETECT,
  88         QUIRK_MIDI_STANDARD_INTERFACE,
  89         QUIRK_MIDI_FIXED_ENDPOINT,
  90         QUIRK_MIDI_YAMAHA,
  91         QUIRK_MIDI_ROLAND,
  92         QUIRK_MIDI_MIDIMAN,
  93         QUIRK_MIDI_NOVATION,
  94         QUIRK_MIDI_RAW_BYTES,
  95         QUIRK_MIDI_EMAGIC,
  96         QUIRK_MIDI_CME,
  97         QUIRK_MIDI_AKAI,
  98         QUIRK_MIDI_US122L,
  99         QUIRK_MIDI_FTDI,
 100         QUIRK_MIDI_CH345,
 101         QUIRK_AUDIO_STANDARD_INTERFACE,
 102         QUIRK_AUDIO_FIXED_ENDPOINT,
 103         QUIRK_AUDIO_EDIROL_UAXX,
 104         QUIRK_AUDIO_STANDARD_MIXER,
 105
 106         QUIRK_TYPE_COUNT
 107 };
 108
 109 struct snd_usb_audio_quirk {
 110         const char *vendor_name;
 111         const char *product_name;
 112         int16_t ifnum;
 113         uint16_t type;
 114         const void *data;
 115 };
 116
 117 #define combine_word(s)    ((*(s)) | ((unsigned int)(s)[1] << 8))
 118 #define combine_triple(s)  (combine_word(s) | ((unsigned int)(s)[2] << 16))
 119 #define combine_quad(s)    (combine_triple(s) | ((unsigned int)(s)[3] << 24))
 120
 121 int snd_usb_lock_shutdown(struct snd_usb_audio *chip);
 122 void snd_usb_unlock_shutdown(struct snd_usb_audio *chip);
 123
 124 extern bool snd_usb_use_vmalloc;
 125 extern bool snd_usb_skip_validation;
 126
 127 /*
 128  * Driver behavior quirk flags, stored in chip->quirk_flags
 129  *
 130  * QUIRK_FLAG_GET_SAMPLE_RATE:
 131  *  Skip reading sample rate for devices, as some devices behave inconsistently
 132  *  or return error
 133  * QUIRK_FLAG_SHARE_MEDIA_DEVICE:
 134  *  Create Media Controller API entries
 135  * QUIRK_FLAG_ALIGN_TRANSFER:
 136  *  Allow alignment on audio sub-slot (channel samples) rather than on audio
 137  *  slots (audio frames)
 138  * QUIRK_TX_LENGTH:
 139  *  Add length specifier to transfers
 140  * QUIRK_FLAG_PLAYBACK_FIRST:
 141  *  Start playback stream at first even in implement feedback mode
 142  * QUIRK_FLAG_SKIP_CLOCK_SELECTOR:
 143  *  Skip clock selector setup; the device may reset to invalid state
 144  * QUIRK_FLAG_IGNORE_CLOCK_SOURCE:
 145  *  Ignore errors from clock source search; i.e. hardcoded clock
 146  * QUIRK_FLAG_ITF_USB_DSD_DAC:
 147  *  Indicates the device is for ITF-USB DSD based DACs that need a vendor cmd
 148  *  to switch between PCM and native DSD mode
 149  * QUIRK_FLAG_CTL_MSG_DELAY:
 150  *  Add a delay of 20ms at each control message handling
 151  * QUIRK_FLAG_CTL_MSG_DELAY_1M:
 152  *  Add a delay of 1-2ms at each control message handling
 153  * QUIRK_FLAG_CTL_MSG_DELAY_5M:
 154  *  Add a delay of 5-6ms at each control message handling
 155  * QUIRK_FLAG_IFACE_DELAY:
 156  *  Add a delay of 50ms at each interface setup
 157  * QUIRK_FLAG_VALIDATE_RATES:
 158  *  Perform sample rate validations at probe
 159  * QUIRK_FLAG_DISABLE_AUTOSUSPEND:
 160  *  Disable runtime PM autosuspend
 161  * QUIRK_FLAG_IGNORE_CTL_ERROR:
 162  *  Ignore errors for mixer access
 163  * QUIRK_FLAG_DSD_RAW:
 164  *  Support generic DSD raw U32_BE format
 165  * QUIRK_FLAG_SET_IFACE_FIRST:
 166  *  Set up the interface at first like UAC1
 167  */
 168
 169 #define QUIRK_FLAG_GET_SAMPLE_RATE      (1U << 0)
 170 #define QUIRK_FLAG_SHARE_MEDIA_DEVICE   (1U << 1)
 171 #define QUIRK_FLAG_ALIGN_TRANSFER       (1U << 2)
 172 #define QUIRK_FLAG_TX_LENGTH            (1U << 3)
 173 #define QUIRK_FLAG_PLAYBACK_FIRST       (1U << 4)
 174 #define QUIRK_FLAG_SKIP_CLOCK_SELECTOR  (1U << 5)
 175 #define QUIRK_FLAG_IGNORE_CLOCK_SOURCE  (1U << 6)
 176 #define QUIRK_FLAG_ITF_USB_DSD_DAC      (1U << 7)
 177 #define QUIRK_FLAG_CTL_MSG_DELAY        (1U << 8)
 178 #define QUIRK_FLAG_CTL_MSG_DELAY_1M     (1U << 9)
 179 #define QUIRK_FLAG_CTL_MSG_DELAY_5M     (1U << 10)
 180 #define QUIRK_FLAG_IFACE_DELAY          (1U << 11)
 181 #define QUIRK_FLAG_VALIDATE_RATES       (1U << 12)
 182 #define QUIRK_FLAG_DISABLE_AUTOSUSPEND  (1U << 13)
 183 #define QUIRK_FLAG_IGNORE_CTL_ERROR     (1U << 14)
 184 #define QUIRK_FLAG_DSD_RAW              (1U << 15)
 185 #define QUIRK_FLAG_SET_IFACE_FIRST      (1U << 16)
 186
 187 #endif /* __USBAUDIO_H */