linux/sound/pci/cs5535audio/cs5535audio_pcm.c

// SPDX-License-Identifier: GPL-2.0-or-later
/*
 * Driver for audio on multifunction CS5535 companion device
 * Copyright (C) Jaya Kumar
 *
 * Based on Jaroslav Kysela and Takashi Iwai's examples.
 * This work was sponsored by CIS(M) Sdn Bhd.
 *
 * todo: add be fmt support, spdif, pm
 */

#include <linux/init.h>
#include <linux/pci.h>
#include <sound/core.h>
#include <sound/control.h>
#include <sound/initval.h>
#include <sound/asoundef.h>
#include <sound/pcm.h>
#include <sound/pcm_params.h>
#include <sound/ac97_codec.h>
#include "cs5535audio.h"

static const struct snd_pcm_hardware snd_cs5535audio_playback = …;

static const struct snd_pcm_hardware snd_cs5535audio_capture = …;

static int snd_cs5535audio_playback_open(struct snd_pcm_substream *substream)
{ … }

static int snd_cs5535audio_playback_close(struct snd_pcm_substream *substream)
{ … }

#define CS5535AUDIO_DESC_LIST_SIZE …

static int cs5535audio_build_dma_packets(struct cs5535audio *cs5535au,
					 struct cs5535audio_dma *dma,
					 struct snd_pcm_substream *substream,
					 unsigned int periods,
					 unsigned int period_bytes)
{ … }

static void cs5535audio_playback_enable_dma(struct cs5535audio *cs5535au)
{ … }

static void cs5535audio_playback_disable_dma(struct cs5535audio *cs5535au)
{ … }

static void cs5535audio_playback_pause_dma(struct cs5535audio *cs5535au)
{ … }

static void cs5535audio_playback_setup_prd(struct cs5535audio *cs5535au,
					   u32 prd_addr)
{ … }

static u32 cs5535audio_playback_read_prd(struct cs5535audio *cs5535au)
{ … }

static u32 cs5535audio_playback_read_dma_pntr(struct cs5535audio *cs5535au)
{ … }

static void cs5535audio_capture_enable_dma(struct cs5535audio *cs5535au)
{ … }

static void cs5535audio_capture_disable_dma(struct cs5535audio *cs5535au)
{ … }

static void cs5535audio_capture_pause_dma(struct cs5535audio *cs5535au)
{ … }

static void cs5535audio_capture_setup_prd(struct cs5535audio *cs5535au,
					  u32 prd_addr)
{ … }

static u32 cs5535audio_capture_read_prd(struct cs5535audio *cs5535au)
{ … }

static u32 cs5535audio_capture_read_dma_pntr(struct cs5535audio *cs5535au)
{ … }

static void cs5535audio_clear_dma_packets(struct cs5535audio *cs5535au,
					  struct cs5535audio_dma *dma,
					  struct snd_pcm_substream *substream)
{ … }

static int snd_cs5535audio_hw_params(struct snd_pcm_substream *substream,
				     struct snd_pcm_hw_params *hw_params)
{ … }

static int snd_cs5535audio_hw_free(struct snd_pcm_substream *substream)
{ … }

static int snd_cs5535audio_playback_prepare(struct snd_pcm_substream *substream)
{ … }

static int snd_cs5535audio_trigger(struct snd_pcm_substream *substream, int cmd)
{ … }

static snd_pcm_uframes_t snd_cs5535audio_pcm_pointer(struct snd_pcm_substream
							*substream)
{ … }

static int snd_cs5535audio_capture_open(struct snd_pcm_substream *substream)
{ … }

static int snd_cs5535audio_capture_close(struct snd_pcm_substream *substream)
{ … }

static int snd_cs5535audio_capture_prepare(struct snd_pcm_substream *substream)
{ … }

static const struct snd_pcm_ops snd_cs5535audio_playback_ops = …;

static const struct snd_pcm_ops snd_cs5535audio_capture_ops = …;

static const struct cs5535audio_dma_ops snd_cs5535audio_playback_dma_ops = …;

static const struct cs5535audio_dma_ops snd_cs5535audio_capture_dma_ops = …;

int snd_cs5535audio_pcm(struct cs5535audio *cs5535au)
{ … }