diff options
| author | Takashi Iwai <tiwai@suse.de> | 2020-06-05 09:41:17 +0300 |
|---|---|---|
| committer | Takashi Iwai <tiwai@suse.de> | 2020-06-08 20:34:49 +0300 |
| commit | 88d8822d30cc6f668d44a1a7466bed5a1f85f607 (patch) | |
| tree | 68b6dfdd4c466744d68391e578a37e734a4ef94b /sound/usb/usbaudio.h | |
| parent | 573fcbfd319ccef26caa3700320242accea7fd5c (diff) | |
| download | linux-88d8822d30cc6f668d44a1a7466bed5a1f85f607.tar.xz | |
ALSA: usb-audio: Manage auto-pm of all bundled interfaces
Currently USB-audio driver manages the auto-pm of the primary
interface although a card may consist of multiple interfaces.
This may leave the secondary and other interfaces left running
unnecessarily after the auto-suspend.
This patch allows the driver managing the auto-pm of all bundled
interfaces per card. The chip->pm_intf field is extended as
chip->intf[] to contain the array of assigned interfaces, and the
runtime-PM is performed to all those interfaces.
Tested-by: Macpaul Lin <macpaul.lin@mediatek.com>
Link: https://lore.kernel.org/r/20200605064117.28504-1-tiwai@suse.de
Signed-off-by: Takashi Iwai <tiwai@suse.de>
Diffstat (limited to 'sound/usb/usbaudio.h')
| -rw-r--r-- | sound/usb/usbaudio.h | 4 |
1 files changed, 3 insertions, 1 deletions
diff --git a/sound/usb/usbaudio.h b/sound/usb/usbaudio.h index e0ebfb25fbd5..b91c4c0807ec 100644 --- a/sound/usb/usbaudio.h +++ b/sound/usb/usbaudio.h @@ -19,11 +19,13 @@ 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 *pm_intf; + struct usb_interface *intf[MAX_CARD_INTERFACES]; u32 usb_id; struct mutex mutex; unsigned int system_suspend; |