mirror of
https://mirrors.bfsu.edu.cn/git/linux.git
synced 2024-12-05 01:54:09 +08:00
00272c6182
The current endpoint handling assumed (more or less) a unique 1:1
relation between the endpoint and the iface/altset. The exception was
the sync EP without the implicit feedback which has usually the
secondary EP of the same altset. This works fine for most devices,
but it turned out that some unusual devices like Pinoeer's ones have
both playback and capture endpoints in the same iface/altsetting and
use both for the implicit feedback mode. For handling such a case, we
need to extend the endpoint management to take the shared interface
into account.
This patch does that: it adds a new object snd_usb_iface_ref for
managing the reference counts of the each USB interface that is used
by each endpoint. The interface setup is performed only once for the
(sharing) endpoints, and the doubly initialization is avoided.
Along with this, the resource release of endpoints and interface
refcounts are put into a single function, snd_usb_endpoint_free_all()
instead of looping in the caller side.
Fixes: bf6313a0ff ("ALSA: usb-audio: Refactor endpoint management")
Link: https://lore.kernel.org/r/20210108075219.21463-4-tiwai@suse.de
Signed-off-by: Takashi Iwai <tiwai@suse.de>
128 lines
3.4 KiB
C
128 lines
3.4 KiB
C
/* SPDX-License-Identifier: GPL-2.0-or-later */
|
|
#ifndef __USBAUDIO_H
|
|
#define __USBAUDIO_H
|
|
/*
|
|
* (Tentative) USB Audio Driver for ALSA
|
|
*
|
|
* Copyright (c) 2002 by Takashi Iwai <tiwai@suse.de>
|
|
*/
|
|
|
|
/* handling of USB vendor/product ID pairs as 32-bit numbers */
|
|
#define USB_ID(vendor, product) (((vendor) << 16) | (product))
|
|
#define USB_ID_VENDOR(id) ((id) >> 16)
|
|
#define USB_ID_PRODUCT(id) ((u16)(id))
|
|
|
|
/*
|
|
*
|
|
*/
|
|
|
|
struct media_device;
|
|
struct media_intf_devnode;
|
|
|
|
#define MAX_CARD_INTERFACES 16
|
|
|
|
struct snd_usb_audio {
|
|
int index;
|
|
struct usb_device *dev;
|
|
struct snd_card *card;
|
|
struct usb_interface *intf[MAX_CARD_INTERFACES];
|
|
u32 usb_id;
|
|
struct mutex mutex;
|
|
unsigned int system_suspend;
|
|
atomic_t active;
|
|
atomic_t shutdown;
|
|
atomic_t usage_count;
|
|
wait_queue_head_t shutdown_wait;
|
|
unsigned int txfr_quirk:1; /* Subframe boundaries on transfers */
|
|
unsigned int tx_length_quirk:1; /* Put length specifier in transfers */
|
|
unsigned int need_delayed_register:1; /* warn for delayed registration */
|
|
int num_interfaces;
|
|
int num_suspended_intf;
|
|
int sample_rate_read_error;
|
|
|
|
int badd_profile; /* UAC3 BADD profile */
|
|
|
|
struct list_head pcm_list; /* list of pcm streams */
|
|
struct list_head ep_list; /* list of audio-related endpoints */
|
|
struct list_head iface_ref_list; /* list of interface refcounts */
|
|
int pcm_devs;
|
|
|
|
struct list_head midi_list; /* list of midi interfaces */
|
|
|
|
struct list_head mixer_list; /* list of mixer interfaces */
|
|
|
|
int setup; /* from the 'device_setup' module param */
|
|
bool generic_implicit_fb; /* from the 'implicit_fb' module param */
|
|
bool autoclock; /* from the 'autoclock' module param */
|
|
|
|
struct usb_host_interface *ctrl_intf; /* the audio control interface */
|
|
struct media_device *media_dev;
|
|
struct media_intf_devnode *ctl_intf_media_devnode;
|
|
};
|
|
|
|
#define usb_audio_err(chip, fmt, args...) \
|
|
dev_err(&(chip)->dev->dev, fmt, ##args)
|
|
#define usb_audio_warn(chip, fmt, args...) \
|
|
dev_warn(&(chip)->dev->dev, fmt, ##args)
|
|
#define usb_audio_info(chip, fmt, args...) \
|
|
dev_info(&(chip)->dev->dev, fmt, ##args)
|
|
#define usb_audio_dbg(chip, fmt, args...) \
|
|
dev_dbg(&(chip)->dev->dev, fmt, ##args)
|
|
|
|
/*
|
|
* Information about devices with broken descriptors
|
|
*/
|
|
|
|
/* special values for .ifnum */
|
|
#define QUIRK_NO_INTERFACE -2
|
|
#define QUIRK_ANY_INTERFACE -1
|
|
|
|
enum quirk_type {
|
|
QUIRK_IGNORE_INTERFACE,
|
|
QUIRK_COMPOSITE,
|
|
QUIRK_AUTODETECT,
|
|
QUIRK_MIDI_STANDARD_INTERFACE,
|
|
QUIRK_MIDI_FIXED_ENDPOINT,
|
|
QUIRK_MIDI_YAMAHA,
|
|
QUIRK_MIDI_ROLAND,
|
|
QUIRK_MIDI_MIDIMAN,
|
|
QUIRK_MIDI_NOVATION,
|
|
QUIRK_MIDI_RAW_BYTES,
|
|
QUIRK_MIDI_EMAGIC,
|
|
QUIRK_MIDI_CME,
|
|
QUIRK_MIDI_AKAI,
|
|
QUIRK_MIDI_US122L,
|
|
QUIRK_MIDI_FTDI,
|
|
QUIRK_MIDI_CH345,
|
|
QUIRK_AUDIO_STANDARD_INTERFACE,
|
|
QUIRK_AUDIO_FIXED_ENDPOINT,
|
|
QUIRK_AUDIO_EDIROL_UAXX,
|
|
QUIRK_AUDIO_ALIGN_TRANSFER,
|
|
QUIRK_AUDIO_STANDARD_MIXER,
|
|
QUIRK_SETUP_FMT_AFTER_RESUME,
|
|
QUIRK_SETUP_DISABLE_AUTOSUSPEND,
|
|
|
|
QUIRK_TYPE_COUNT
|
|
};
|
|
|
|
struct snd_usb_audio_quirk {
|
|
const char *vendor_name;
|
|
const char *product_name;
|
|
int16_t ifnum;
|
|
uint16_t type;
|
|
bool shares_media_device;
|
|
const void *data;
|
|
};
|
|
|
|
#define combine_word(s) ((*(s)) | ((unsigned int)(s)[1] << 8))
|
|
#define combine_triple(s) (combine_word(s) | ((unsigned int)(s)[2] << 16))
|
|
#define combine_quad(s) (combine_triple(s) | ((unsigned int)(s)[3] << 24))
|
|
|
|
int snd_usb_lock_shutdown(struct snd_usb_audio *chip);
|
|
void snd_usb_unlock_shutdown(struct snd_usb_audio *chip);
|
|
|
|
extern bool snd_usb_use_vmalloc;
|
|
extern bool snd_usb_skip_validation;
|
|
|
|
#endif /* __USBAUDIO_H */
|