xref: /openbmc/linux/sound/usb/power.h (revision 86a9bb5b)
1 /* SPDX-License-Identifier: GPL-2.0 */
2 #ifndef __USBAUDIO_POWER_H
3 #define __USBAUDIO_POWER_H
4 
5 struct snd_usb_power_domain {
6 	int pd_id;              /* UAC3 Power Domain ID */
7 	int pd_d1d0_rec;        /* D1 to D0 recovery time */
8 	int pd_d2d0_rec;        /* D2 to D0 recovery time */
9 };
10 
11 enum {
12 	UAC3_PD_STATE_D0,
13 	UAC3_PD_STATE_D1,
14 	UAC3_PD_STATE_D2,
15 };
16 
17 int snd_usb_power_domain_set(struct snd_usb_audio *chip,
18 			     struct snd_usb_power_domain *pd,
19 			     unsigned char state);
20 struct snd_usb_power_domain *
21 snd_usb_find_power_domain(struct usb_host_interface *ctrl_iface,
22 			  unsigned char id);
23 
24 int snd_usb_autoresume(struct snd_usb_audio *chip);
25 void snd_usb_autosuspend(struct snd_usb_audio *chip);
26 
27 #endif /* __USBAUDIO_POWER_H */
28