mirror of
https://github.com/torvalds/linux
synced 2024-11-05 18:23:50 +00:00
3d58760f4d
There are two places calculating the next packet size for the playback stream in the exactly same way. Provide the single helper for this purpose and use it from both places gracefully. Tested-by: Keith Milner <kamilner@superlative.org> Tested-by: Dylan Robinson <dylan_robinson@motu.com> Link: https://lore.kernel.org/r/20201123085347.19667-32-tiwai@suse.de Signed-off-by: Takashi Iwai <tiwai@suse.de>
51 lines
2 KiB
C
51 lines
2 KiB
C
/* SPDX-License-Identifier: GPL-2.0 */
|
|
#ifndef __USBAUDIO_ENDPOINT_H
|
|
#define __USBAUDIO_ENDPOINT_H
|
|
|
|
#define SND_USB_ENDPOINT_TYPE_DATA 0
|
|
#define SND_USB_ENDPOINT_TYPE_SYNC 1
|
|
|
|
struct snd_usb_endpoint *snd_usb_get_endpoint(struct snd_usb_audio *chip,
|
|
int ep_num);
|
|
|
|
int snd_usb_add_endpoint(struct snd_usb_audio *chip, int ep_num, int type);
|
|
|
|
struct snd_usb_endpoint *
|
|
snd_usb_endpoint_open(struct snd_usb_audio *chip,
|
|
const struct audioformat *fp,
|
|
const struct snd_pcm_hw_params *params,
|
|
bool is_sync_ep);
|
|
void snd_usb_endpoint_close(struct snd_usb_audio *chip,
|
|
struct snd_usb_endpoint *ep);
|
|
int snd_usb_endpoint_configure(struct snd_usb_audio *chip,
|
|
struct snd_usb_endpoint *ep);
|
|
void snd_usb_endpoint_suspend(struct snd_usb_endpoint *ep);
|
|
|
|
bool snd_usb_endpoint_compatible(struct snd_usb_audio *chip,
|
|
struct snd_usb_endpoint *ep,
|
|
const struct audioformat *fp,
|
|
const struct snd_pcm_hw_params *params);
|
|
|
|
void snd_usb_endpoint_set_sync(struct snd_usb_audio *chip,
|
|
struct snd_usb_endpoint *data_ep,
|
|
struct snd_usb_endpoint *sync_ep);
|
|
void snd_usb_endpoint_set_callback(struct snd_usb_endpoint *ep,
|
|
void (*prepare)(struct snd_usb_substream *subs,
|
|
struct urb *urb),
|
|
void (*retire)(struct snd_usb_substream *subs,
|
|
struct urb *urb),
|
|
struct snd_usb_substream *data_subs);
|
|
|
|
int snd_usb_endpoint_start(struct snd_usb_endpoint *ep);
|
|
void snd_usb_endpoint_stop(struct snd_usb_endpoint *ep);
|
|
void snd_usb_endpoint_sync_pending_stop(struct snd_usb_endpoint *ep);
|
|
void snd_usb_endpoint_suspend(struct snd_usb_endpoint *ep);
|
|
int snd_usb_endpoint_activate(struct snd_usb_endpoint *ep);
|
|
void snd_usb_endpoint_release(struct snd_usb_endpoint *ep);
|
|
void snd_usb_endpoint_free(struct snd_usb_endpoint *ep);
|
|
|
|
int snd_usb_endpoint_implicit_feedback_sink(struct snd_usb_endpoint *ep);
|
|
int snd_usb_endpoint_next_packet_size(struct snd_usb_endpoint *ep,
|
|
struct snd_urb_ctx *ctx, int idx);
|
|
|
|
#endif /* __USBAUDIO_ENDPOINT_H */
|