LXR linux/sound/usb/power.h

   1/* SPDX-License-Identifier: GPL-2.0 */
   2#ifndef __USBAUDIO_POWER_H
   3#define __USBAUDIO_POWER_H
   4
   5struct 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
  11enum {
  12        UAC3_PD_STATE_D0,
  13        UAC3_PD_STATE_D1,
  14        UAC3_PD_STATE_D2,
  15};
  16
  17int snd_usb_power_domain_set(struct snd_usb_audio *chip,
  18                             struct snd_usb_power_domain *pd,
  19                             unsigned char state);
  20struct snd_usb_power_domain *
  21snd_usb_find_power_domain(struct usb_host_interface *ctrl_iface,
  22                          unsigned char id);
  23
  24#ifdef CONFIG_PM
  25int snd_usb_autoresume(struct snd_usb_audio *chip);
  26void snd_usb_autosuspend(struct snd_usb_audio *chip);
  27#else
  28static inline int snd_usb_autoresume(struct snd_usb_audio *chip)
  29{
  30        return 0;
  31}
  32static inline void snd_usb_autosuspend(struct snd_usb_audio *chip)
  33{
  34}
  35#endif
  36
  37#endif /* __USBAUDIO_POWER_H */
  38