195 lines
6.0 KiB
C
195 lines
6.0 KiB
C
/* SPDX-License-Identifier: GPL-2.0-or-later */
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#ifndef __USBAUDIO_H
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#define __USBAUDIO_H
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/*
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* (Tentative) USB Audio Driver for ALSA
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*
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* Copyright (c) 2002 by Takashi Iwai <tiwai@suse.de>
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*/
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/* handling of USB vendor/product ID pairs as 32-bit numbers */
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#define USB_ID(vendor, product) (((unsigned int)(vendor) << 16) | (product))
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#define USB_ID_VENDOR(id) ((id) >> 16)
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#define USB_ID_PRODUCT(id) ((u16)(id))
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/*
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*
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*/
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struct media_device;
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struct media_intf_devnode;
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#define MAX_CARD_INTERFACES 16
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struct snd_usb_audio {
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int index;
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struct usb_device *dev;
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struct snd_card *card;
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struct usb_interface *intf[MAX_CARD_INTERFACES];
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u32 usb_id;
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uint16_t quirk_type;
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struct mutex mutex;
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unsigned int system_suspend;
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atomic_t active;
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atomic_t shutdown;
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atomic_t usage_count;
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wait_queue_head_t shutdown_wait;
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unsigned int quirk_flags;
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unsigned int need_delayed_register:1; /* warn for delayed registration */
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int num_interfaces;
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int num_suspended_intf;
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int sample_rate_read_error;
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int badd_profile; /* UAC3 BADD profile */
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struct list_head pcm_list; /* list of pcm streams */
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struct list_head ep_list; /* list of audio-related endpoints */
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struct list_head iface_ref_list; /* list of interface refcounts */
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struct list_head clock_ref_list; /* list of clock refcounts */
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int pcm_devs;
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struct list_head midi_list; /* list of midi interfaces */
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struct list_head mixer_list; /* list of mixer interfaces */
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int setup; /* from the 'device_setup' module param */
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bool generic_implicit_fb; /* from the 'implicit_fb' module param */
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bool autoclock; /* from the 'autoclock' module param */
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bool lowlatency; /* from the 'lowlatency' module param */
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struct usb_host_interface *ctrl_intf; /* the audio control interface */
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struct media_device *media_dev;
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struct media_intf_devnode *ctl_intf_media_devnode;
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};
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#define USB_AUDIO_IFACE_UNUSED ((void *)-1L)
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#define usb_audio_err(chip, fmt, args...) \
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dev_err(&(chip)->dev->dev, fmt, ##args)
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#define usb_audio_warn(chip, fmt, args...) \
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dev_warn(&(chip)->dev->dev, fmt, ##args)
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#define usb_audio_info(chip, fmt, args...) \
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dev_info(&(chip)->dev->dev, fmt, ##args)
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#define usb_audio_dbg(chip, fmt, args...) \
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dev_dbg(&(chip)->dev->dev, fmt, ##args)
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/*
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* Information about devices with broken descriptors
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*/
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/* special values for .ifnum */
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#define QUIRK_NODEV_INTERFACE -3 /* return -ENODEV */
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#define QUIRK_NO_INTERFACE -2
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#define QUIRK_ANY_INTERFACE -1
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enum quirk_type {
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QUIRK_IGNORE_INTERFACE,
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QUIRK_COMPOSITE,
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QUIRK_AUTODETECT,
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QUIRK_MIDI_STANDARD_INTERFACE,
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QUIRK_MIDI_FIXED_ENDPOINT,
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QUIRK_MIDI_YAMAHA,
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QUIRK_MIDI_ROLAND,
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QUIRK_MIDI_MIDIMAN,
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QUIRK_MIDI_NOVATION,
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QUIRK_MIDI_RAW_BYTES,
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QUIRK_MIDI_EMAGIC,
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QUIRK_MIDI_CME,
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QUIRK_MIDI_AKAI,
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QUIRK_MIDI_US122L,
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QUIRK_MIDI_FTDI,
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QUIRK_MIDI_CH345,
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QUIRK_AUDIO_STANDARD_INTERFACE,
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QUIRK_AUDIO_FIXED_ENDPOINT,
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QUIRK_AUDIO_EDIROL_UAXX,
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QUIRK_AUDIO_STANDARD_MIXER,
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QUIRK_TYPE_COUNT
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};
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struct snd_usb_audio_quirk {
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const char *vendor_name;
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const char *product_name;
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int16_t ifnum;
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uint16_t type;
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const void *data;
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};
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#define combine_word(s) ((*(s)) | ((unsigned int)(s)[1] << 8))
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#define combine_triple(s) (combine_word(s) | ((unsigned int)(s)[2] << 16))
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#define combine_quad(s) (combine_triple(s) | ((unsigned int)(s)[3] << 24))
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int snd_usb_lock_shutdown(struct snd_usb_audio *chip);
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void snd_usb_unlock_shutdown(struct snd_usb_audio *chip);
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extern bool snd_usb_use_vmalloc;
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extern bool snd_usb_skip_validation;
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/*
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* Driver behavior quirk flags, stored in chip->quirk_flags
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*
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* QUIRK_FLAG_GET_SAMPLE_RATE:
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* Skip reading sample rate for devices, as some devices behave inconsistently
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* or return error
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* QUIRK_FLAG_SHARE_MEDIA_DEVICE:
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* Create Media Controller API entries
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* QUIRK_FLAG_ALIGN_TRANSFER:
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* Allow alignment on audio sub-slot (channel samples) rather than on audio
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* slots (audio frames)
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* QUIRK_TX_LENGTH:
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* Add length specifier to transfers
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* QUIRK_FLAG_PLAYBACK_FIRST:
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* Start playback stream at first even in implement feedback mode
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* QUIRK_FLAG_SKIP_CLOCK_SELECTOR:
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* Skip clock selector setup; the device may reset to invalid state
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* QUIRK_FLAG_IGNORE_CLOCK_SOURCE:
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* Ignore errors from clock source search; i.e. hardcoded clock
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* QUIRK_FLAG_ITF_USB_DSD_DAC:
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* Indicates the device is for ITF-USB DSD based DACs that need a vendor cmd
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* to switch between PCM and native DSD mode
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* QUIRK_FLAG_CTL_MSG_DELAY:
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* Add a delay of 20ms at each control message handling
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* QUIRK_FLAG_CTL_MSG_DELAY_1M:
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* Add a delay of 1-2ms at each control message handling
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* QUIRK_FLAG_CTL_MSG_DELAY_5M:
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* Add a delay of 5-6ms at each control message handling
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* QUIRK_FLAG_IFACE_DELAY:
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* Add a delay of 50ms at each interface setup
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* QUIRK_FLAG_VALIDATE_RATES:
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* Perform sample rate validations at probe
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* QUIRK_FLAG_DISABLE_AUTOSUSPEND:
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* Disable runtime PM autosuspend
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* QUIRK_FLAG_IGNORE_CTL_ERROR:
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* Ignore errors for mixer access
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* QUIRK_FLAG_DSD_RAW:
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* Support generic DSD raw U32_BE format
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* QUIRK_FLAG_SET_IFACE_FIRST:
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* Set up the interface at first like UAC1
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* QUIRK_FLAG_GENERIC_IMPLICIT_FB
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* Apply the generic implicit feedback sync mode (same as implicit_fb=1 option)
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* QUIRK_FLAG_SKIP_IMPLICIT_FB
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* Don't apply implicit feedback sync mode
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*/
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#define QUIRK_FLAG_GET_SAMPLE_RATE (1U << 0)
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#define QUIRK_FLAG_SHARE_MEDIA_DEVICE (1U << 1)
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#define QUIRK_FLAG_ALIGN_TRANSFER (1U << 2)
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#define QUIRK_FLAG_TX_LENGTH (1U << 3)
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#define QUIRK_FLAG_PLAYBACK_FIRST (1U << 4)
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#define QUIRK_FLAG_SKIP_CLOCK_SELECTOR (1U << 5)
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#define QUIRK_FLAG_IGNORE_CLOCK_SOURCE (1U << 6)
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#define QUIRK_FLAG_ITF_USB_DSD_DAC (1U << 7)
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#define QUIRK_FLAG_CTL_MSG_DELAY (1U << 8)
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#define QUIRK_FLAG_CTL_MSG_DELAY_1M (1U << 9)
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#define QUIRK_FLAG_CTL_MSG_DELAY_5M (1U << 10)
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#define QUIRK_FLAG_IFACE_DELAY (1U << 11)
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#define QUIRK_FLAG_VALIDATE_RATES (1U << 12)
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#define QUIRK_FLAG_DISABLE_AUTOSUSPEND (1U << 13)
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#define QUIRK_FLAG_IGNORE_CTL_ERROR (1U << 14)
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#define QUIRK_FLAG_DSD_RAW (1U << 15)
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#define QUIRK_FLAG_SET_IFACE_FIRST (1U << 16)
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#define QUIRK_FLAG_GENERIC_IMPLICIT_FB (1U << 17)
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#define QUIRK_FLAG_SKIP_IMPLICIT_FB (1U << 18)
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#endif /* __USBAUDIO_H */
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