linux/sound/soc/atmel/sam9x5_wm8731.c

// SPDX-License-Identifier: GPL-2.0-or-later
/*
 * sam9x5_wm8731   --	SoC audio for AT91SAM9X5-based boards
 *			that are using WM8731 as codec.
 *
 *  Copyright (C) 2011 Atmel,
 *		  Nicolas Ferre <[email protected]>
 *
 *  Copyright (C) 2013 Paratronic,
 *		  Richard Genoud <[email protected]>
 *
 * Based on sam9g20_wm8731.c by:
 * Sedji Gaouaou <[email protected]>
 */
#include <linux/of.h>
#include <linux/export.h>
#include <linux/module.h>
#include <linux/mod_devicetable.h>
#include <linux/platform_device.h>
#include <linux/device.h>

#include <sound/soc.h>
#include <sound/soc-dai.h>
#include <sound/soc-dapm.h>

#include "../codecs/wm8731.h"
#include "atmel_ssc_dai.h"


#define MCLK_RATE …

#define DRV_NAME …

struct sam9x5_drvdata { … };

/*
 * Logic for a wm8731 as connected on a at91sam9x5ek based board.
 */
static int sam9x5_wm8731_init(struct snd_soc_pcm_runtime *rtd)
{ … }

/*
 * Audio paths on at91sam9x5ek board:
 *
 *  |A| ------------> |      | ---R----> Headphone Jack
 *  |T| <----\        |  WM  | ---L--/
 *  |9| ---> CLK <--> | 8731 | <--R----- Line In Jack
 *  |1| <------------ |      | <--L--/
 */
static const struct snd_soc_dapm_widget sam9x5_dapm_widgets[] = …;

static int sam9x5_wm8731_driver_probe(struct platform_device *pdev)
{ … }

static void sam9x5_wm8731_driver_remove(struct platform_device *pdev)
{ … }

static const struct of_device_id sam9x5_wm8731_of_match[] = …;
MODULE_DEVICE_TABLE(of, sam9x5_wm8731_of_match);

static struct platform_driver sam9x5_wm8731_driver = …;
module_platform_driver(…) …;

/* Module information */
MODULE_AUTHOR(…) …;
MODULE_AUTHOR(…) …;
MODULE_DESCRIPTION(…) …;
MODULE_LICENSE(…) …;
MODULE_ALIAS(…) …;