linux/sound/usb/6fire/pcm.c

// SPDX-License-Identifier: GPL-2.0-or-later
/*
 * Linux driver for TerraTec DMX 6Fire USB
 *
 * PCM driver
 *
 * Author:	Torsten Schenk <[email protected]>
 * Created:	Jan 01, 2011
 * Copyright:	(C) Torsten Schenk
 */

#include "pcm.h"
#include "chip.h"
#include "comm.h"
#include "control.h"

enum { … };

/* keep next two synced with
 * FW_EP_W_MAX_PACKET_SIZE[] and RATES_MAX_PACKET_SIZE
 * and CONTROL_RATE_XXX in control.h */
static const int rates_in_packet_size[] = …;
static const int rates_out_packet_size[] = …;
static const int rates[] = …;
static const int rates_alsaid[] = …;

enum { … };

enum { … };

static const struct snd_pcm_hardware pcm_hw = …;

static int usb6fire_pcm_set_rate(struct pcm_runtime *rt)
{ … }

static struct pcm_substream *usb6fire_pcm_get_substream(
		struct snd_pcm_substream *alsa_sub)
{ … }

/* call with stream_mutex locked */
static void usb6fire_pcm_stream_stop(struct pcm_runtime *rt)
{ … }

/* call with stream_mutex locked */
static int usb6fire_pcm_stream_start(struct pcm_runtime *rt)
{ … }

/* call with substream locked */
static void usb6fire_pcm_capture(struct pcm_substream *sub, struct pcm_urb *urb)
{ … }

/* call with substream locked */
static void usb6fire_pcm_playback(struct pcm_substream *sub,
		struct pcm_urb *urb)
{ … }

static void usb6fire_pcm_in_urb_handler(struct urb *usb_urb)
{ … }

static void usb6fire_pcm_out_urb_handler(struct urb *usb_urb)
{ … }

static int usb6fire_pcm_open(struct snd_pcm_substream *alsa_sub)
{ … }

static int usb6fire_pcm_close(struct snd_pcm_substream *alsa_sub)
{ … }

static int usb6fire_pcm_prepare(struct snd_pcm_substream *alsa_sub)
{ … }

static int usb6fire_pcm_trigger(struct snd_pcm_substream *alsa_sub, int cmd)
{ … }

static snd_pcm_uframes_t usb6fire_pcm_pointer(
		struct snd_pcm_substream *alsa_sub)
{ … }

static const struct snd_pcm_ops pcm_ops = …;

static void usb6fire_pcm_init_urb(struct pcm_urb *urb,
				  struct sfire_chip *chip, bool in, int ep,
				  void (*handler)(struct urb *))
{ … }

static int usb6fire_pcm_buffers_init(struct pcm_runtime *rt)
{ … }

static void usb6fire_pcm_buffers_destroy(struct pcm_runtime *rt)
{ … }

int usb6fire_pcm_init(struct sfire_chip *chip)
{ … }

void usb6fire_pcm_abort(struct sfire_chip *chip)
{ … }

void usb6fire_pcm_destroy(struct sfire_chip *chip)
{ … }