#ifndef __USBAUDIO_H #define __USBAUDIO_H /* * (Tentative) USB Audio Driver for ALSA * * Copyright (c) 2002 by Takashi Iwai * * * This program is free software; you can redistribute it and/or modify * it under the terms of the GNU General Public License as published by * the Free Software Foundation; either version 2 of the License, or * (at your option) any later version. * * This program is distributed in the hope that it will be useful, * but WITHOUT ANY WARRANTY; without even the implied warranty of * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the * GNU General Public License for more details. * * You should have received a copy of the GNU General Public License * along with this program; if not, write to the Free Software * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA */ /* 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 snd_usb_audio { int index; struct usb_device *dev; struct snd_card *card; struct usb_interface *pm_intf; u32 usb_id; struct mutex mutex; unsigned int autosuspended:1; 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 */ int num_interfaces; int num_suspended_intf; int sample_rate_read_error; struct list_head pcm_list; /* list of pcm streams */ struct list_head ep_list; /* list of audio-related endpoints */ 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 autoclock; /* from the 'autoclock' module param */ struct usb_host_interface *ctrl_intf; /* the audio control interface */ }; #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_TYPE_COUNT }; struct snd_usb_audio_quirk { const char *vendor_name; const char *product_name; int16_t ifnum; uint16_t type; 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); #endif /* __USBAUDIO_H */ b48b295afa5a5ab440de0a94d9ad8b3ce2d0'/>
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authorDaniel Vetter <daniel.vetter@ffwll.ch>2017-01-12 17:15:56 +0100
committerDaniel Vetter <daniel.vetter@ffwll.ch>2017-01-30 10:17:32 +0100
commite6e7b48b295afa5a5ab440de0a94d9ad8b3ce2d0 (patch)
tree77cadb6d8aad1b52c34e4afa8c9deef603bbe2ed /sound/oss/sb_ess.h
parent4e5b54f127426c82dc2816340c26d951a5bb3429 (diff)
drm: Don't race connector registration
I was under the misconception that the sysfs dev stuff can be fully set up, and then registered all in one step with device_add. That's true for properties and property groups, but not for parents and child devices. Those must be fully registered before you can register a child. Add a bit of tracking to make sure that asynchronous mst connector hotplugging gets this right. For consistency we rely upon the implicit barriers of the connector->mutex, which is taken anyway, to ensure that at least either the connector or device registration call will work out. Mildly tested since I can't reliably reproduce this on my mst box here. Reported-by: Dave Hansen <dave.hansen@intel.com> Cc: Dave Hansen <dave.hansen@intel.com> Acked-by: Chris Wilson <chris@chris-wilson.co.uk> Cc: Chris Wilson <chris@chris-wilson.co.uk> Signed-off-by: Daniel Vetter <daniel.vetter@intel.com> Link: http://patchwork.freedesktop.org/patch/msgid/1484237756-2720-1-git-send-email-daniel.vetter@ffwll.ch
Diffstat (limited to 'sound/oss/sb_ess.h')