sound/usb/power.h

   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         struct usb_host_interface *ctrl_iface; /* Control interface */
  10 };
  11
  12 enum {
  13         UAC3_PD_STATE_D0,
  14         UAC3_PD_STATE_D1,
  15         UAC3_PD_STATE_D2,
  16 };
  17
  18 int snd_usb_power_domain_set(struct snd_usb_audio *chip,
  19                              struct snd_usb_power_domain *pd,
  20                              unsigned char state);
  21 struct snd_usb_power_domain *
  22 snd_usb_find_power_domain(struct usb_host_interface *ctrl_iface,
  23                           unsigned char id);
  24
  25 int snd_usb_autoresume(struct snd_usb_audio *chip);
  26 void snd_usb_autosuspend(struct snd_usb_audio *chip);
  27
  28 #endif /* __USBAUDIO_POWER_H */