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author | Linus Torvalds <torvalds@linux-foundation.org> | 2008-01-31 23:16:28 (GMT) |
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committer | Linus Torvalds <torvalds@linux-foundation.org> | 2008-01-31 23:16:28 (GMT) |
commit | e1a9c9872dd004617555dff079b357a6ffd945e9 (patch) | |
tree | c34779e59712ff345f8e4ee97e74086a85b34974 /sound/usb/usbaudio.c | |
parent | fcc3ff4f9d695a80dc6e6058e0d631a3026ed4c3 (diff) | |
parent | 2ecba4ffbbc6c85fce8c3878514be415edace413 (diff) | |
download | linux-fsl-qoriq-e1a9c9872dd004617555dff079b357a6ffd945e9.tar.xz |
Merge branch 'linus' of git://git.kernel.org/pub/scm/linux/kernel/git/perex/alsa
* 'linus' of git://git.kernel.org/pub/scm/linux/kernel/git/perex/alsa: (299 commits)
[ALSA] version 1.0.16rc2
[ALSA] hda: fix Mic in as output
[ALSA] emu10k1 - Another EMU0404 Board ID
[ALSA] emu10k1 - Fix kthread handling at resume
[ALSA] emu10k1: General cleanup, add new locks, fix alsa bug#3501, kernel bug#9304.
[ALSA] emu10k1 - Use enum for emu_model types
[ALSA] emu10k1 - Don't create emu1010 controls for non-emu boards
[ALSA] emu10k1 - 1616(M) cardbus improvements
[ALSA] snd:emu10k1: E-Mu updates. Fixes to firmware loading and support for 0404.
[ALSA] emu10k1: Add comments regarding E-Mu ins and outs.
[ALSA] oxygen: revert SPI clock frequency change for AK4396/WM8785
[ALSA] es1938 - improve capture hw pointer reads
[ALSA] HDA-Intel - Add support for Intel SCH
[ALSA] hda: Add GPIO mute support to STAC9205
[ALSA] hda-codec - Add Dell T3400 support
[ALSA] hda-codec - Add model for HP DV9553EG laptop
[ALSA] hda-codec - Control SPDIF as slave
[ALSA] hda_intel: ALSA HD Audio patch for Intel ICH10 DeviceID's
[ALSA] Fix Oops with PCM OSS sync
[ALSA] hda-codec - Add speaker automute to ALC262 HP models
...
Diffstat (limited to 'sound/usb/usbaudio.c')
-rw-r--r-- | sound/usb/usbaudio.c | 50 |
1 files changed, 49 insertions, 1 deletions
diff --git a/sound/usb/usbaudio.c b/sound/usb/usbaudio.c index 967b823..8fa9356 100644 --- a/sound/usb/usbaudio.c +++ b/sound/usb/usbaudio.c @@ -38,7 +38,6 @@ */ -#include <sound/driver.h> #include <linux/bitops.h> #include <linux/init.h> #include <linux/list.h> @@ -2078,6 +2077,14 @@ static int usb_audio_probe(struct usb_interface *intf, const struct usb_device_id *id); static void usb_audio_disconnect(struct usb_interface *intf); +#ifdef CONFIG_PM +static int usb_audio_suspend(struct usb_interface *intf, pm_message_t message); +static int usb_audio_resume(struct usb_interface *intf); +#else +#define usb_audio_suspend NULL +#define usb_audio_resume NULL +#endif + static struct usb_device_id usb_audio_ids [] = { #include "usbquirks.h" { .match_flags = (USB_DEVICE_ID_MATCH_INT_CLASS | USB_DEVICE_ID_MATCH_INT_SUBCLASS), @@ -2092,6 +2099,8 @@ static struct usb_driver usb_audio_driver = { .name = "snd-usb-audio", .probe = usb_audio_probe, .disconnect = usb_audio_disconnect, + .suspend = usb_audio_suspend, + .resume = usb_audio_resume, .id_table = usb_audio_ids, }; @@ -3654,6 +3663,45 @@ static void usb_audio_disconnect(struct usb_interface *intf) dev_get_drvdata(&intf->dev)); } +#ifdef CONFIG_PM +static int usb_audio_suspend(struct usb_interface *intf, pm_message_t message) +{ + struct snd_usb_audio *chip = dev_get_drvdata(&intf->dev); + struct list_head *p; + struct snd_usb_stream *as; + + if (chip == (void *)-1L) + return 0; + + snd_power_change_state(chip->card, SNDRV_CTL_POWER_D3hot); + if (!chip->num_suspended_intf++) { + list_for_each(p, &chip->pcm_list) { + as = list_entry(p, struct snd_usb_stream, list); + snd_pcm_suspend_all(as->pcm); + } + } + + return 0; +} + +static int usb_audio_resume(struct usb_interface *intf) +{ + struct snd_usb_audio *chip = dev_get_drvdata(&intf->dev); + + if (chip == (void *)-1L) + return 0; + if (--chip->num_suspended_intf) + return 0; + /* + * ALSA leaves material resumption to user space + * we just notify + */ + + snd_power_change_state(chip->card, SNDRV_CTL_POWER_D0); + + return 0; +} +#endif /* CONFIG_PM */ static int __init snd_usb_audio_init(void) { |