linux/sound/spi/at73c213.c

// SPDX-License-Identifier: GPL-2.0-only
/*
 * Driver for AT73C213 16-bit stereo DAC connected to Atmel SSC
 *
 * Copyright (C) 2006-2007 Atmel Norway
 */

/*#define DEBUG*/

#include <linux/clk.h>
#include <linux/err.h>
#include <linux/delay.h>
#include <linux/device.h>
#include <linux/dma-mapping.h>
#include <linux/init.h>
#include <linux/interrupt.h>
#include <linux/module.h>
#include <linux/mutex.h>
#include <linux/platform_device.h>
#include <linux/io.h>

#include <sound/initval.h>
#include <sound/control.h>
#include <sound/core.h>
#include <sound/pcm.h>

#include <linux/atmel-ssc.h>

#include <linux/spi/spi.h>
#include <linux/spi/at73c213.h>

#include "at73c213.h"

#define BITRATE_MIN …
#define BITRATE_TARGET …
#define BITRATE_MAX …

/* Initial (hardware reset) AT73C213 register values. */
static const u8 snd_at73c213_original_image[18] = …;

struct snd_at73c213 { … };

#define get_chip(card) …

static int
snd_at73c213_write_reg(struct snd_at73c213 *chip, u8 reg, u8 val)
{ … }

static struct snd_pcm_hardware snd_at73c213_playback_hw = …;

/*
 * Calculate and set bitrate and divisions.
 */
static int snd_at73c213_set_bitrate(struct snd_at73c213 *chip)
{ … }

static int snd_at73c213_pcm_open(struct snd_pcm_substream *substream)
{ … }

static int snd_at73c213_pcm_close(struct snd_pcm_substream *substream)
{ … }

static int snd_at73c213_pcm_hw_params(struct snd_pcm_substream *substream,
				 struct snd_pcm_hw_params *hw_params)
{ … }

static int snd_at73c213_pcm_prepare(struct snd_pcm_substream *substream)
{ … }

static int snd_at73c213_pcm_trigger(struct snd_pcm_substream *substream,
				   int cmd)
{ … }

static snd_pcm_uframes_t
snd_at73c213_pcm_pointer(struct snd_pcm_substream *substream)
{ … }

static const struct snd_pcm_ops at73c213_playback_ops = …;

static int snd_at73c213_pcm_new(struct snd_at73c213 *chip, int device)
{ … }

static irqreturn_t snd_at73c213_interrupt(int irq, void *dev_id)
{ … }

/*
 * Mixer functions.
 */
static int snd_at73c213_mono_get(struct snd_kcontrol *kcontrol,
				 struct snd_ctl_elem_value *ucontrol)
{ … }

static int snd_at73c213_mono_put(struct snd_kcontrol *kcontrol,
				 struct snd_ctl_elem_value *ucontrol)
{ … }

static int snd_at73c213_stereo_info(struct snd_kcontrol *kcontrol,
				  struct snd_ctl_elem_info *uinfo)
{ … }

static int snd_at73c213_stereo_get(struct snd_kcontrol *kcontrol,
				 struct snd_ctl_elem_value *ucontrol)
{ … }

static int snd_at73c213_stereo_put(struct snd_kcontrol *kcontrol,
				 struct snd_ctl_elem_value *ucontrol)
{ … }

#define snd_at73c213_mono_switch_info …

static int snd_at73c213_mono_switch_get(struct snd_kcontrol *kcontrol,
				 struct snd_ctl_elem_value *ucontrol)
{ … }

static int snd_at73c213_mono_switch_put(struct snd_kcontrol *kcontrol,
				 struct snd_ctl_elem_value *ucontrol)
{ … }

static int snd_at73c213_pa_volume_info(struct snd_kcontrol *kcontrol,
				  struct snd_ctl_elem_info *uinfo)
{ … }

static int snd_at73c213_line_capture_volume_info(
		struct snd_kcontrol *kcontrol,
		struct snd_ctl_elem_info *uinfo)
{ … }

static int snd_at73c213_aux_capture_volume_info(
		struct snd_kcontrol *kcontrol,
		struct snd_ctl_elem_info *uinfo)
{ … }

#define AT73C213_MONO_SWITCH(xname, xindex, reg, shift, mask, invert) …

#define AT73C213_STEREO(xname, xindex, left_reg, right_reg, shift_left, shift_right, mask, invert) …

static const struct snd_kcontrol_new snd_at73c213_controls[] = …;

static int snd_at73c213_mixer(struct snd_at73c213 *chip)
{ … }

/*
 * Device functions
 */
static int snd_at73c213_ssc_init(struct snd_at73c213 *chip)
{ … }

static int snd_at73c213_chip_init(struct snd_at73c213 *chip)
{ … }

static int snd_at73c213_dev_free(struct snd_device *device)
{ … }

static int snd_at73c213_dev_init(struct snd_card *card,
				 struct spi_device *spi)
{ … }

static int snd_at73c213_probe(struct spi_device *spi)
{ … }

static void snd_at73c213_remove(struct spi_device *spi)
{ … }

static int snd_at73c213_suspend(struct device *dev)
{ … }

static int snd_at73c213_resume(struct device *dev)
{ … }

static DEFINE_SIMPLE_DEV_PM_OPS(at73c213_pm_ops, snd_at73c213_suspend,
		snd_at73c213_resume);

static struct spi_driver at73c213_driver = …;

module_spi_driver(…) …;

MODULE_AUTHOR(…) …;
MODULE_DESCRIPTION(…) …;
MODULE_LICENSE(…) …;