path: root/sound/soc/codecs/sta32x.c

/*
 * Codec driver for ST STA32x 2.1-channel high-efficiency digital audio system
 *
 * Copyright: 2011 Raumfeld GmbH
 * Author: Johannes Stezenbach <js@sig21.net>
 *
 * based on code from:
 *	Wolfson Microelectronics PLC.
 *	  Mark Brown <broonie@opensource.wolfsonmicro.com>
 *	Freescale Semiconductor, Inc.
 *	  Timur Tabi <timur@freescale.com>
 *
 * This program is free software; you can redistribute  it and/or modify it
 * under  the terms of  the GNU General  Public License as published by the
 * Free Software Foundation;  either version 2 of the  License, or (at your
 * option) any later version.
 */

#define pr_fmt(fmt) KBUILD_MODNAME ":%s:%d: " fmt, __func__, __LINE__

#include <linux/module.h>
#include <linux/moduleparam.h>
#include <linux/init.h>
#include <linux/delay.h>
#include <linux/pm.h>
#include <linux/i2c.h>
#include <linux/regmap.h>
#include <linux/regulator/consumer.h>
#include <linux/slab.h>
#include <linux/workqueue.h>
#include <sound/core.h>
#include <sound/pcm.h>
#include <sound/pcm_params.h>
#include <sound/soc.h>
#include <sound/soc-dapm.h>
#include <sound/initval.h>
#include <sound/tlv.h>

#include <sound/sta32x.h>
#include "sta32x.h"

#define STA32X_RATES (SNDRV_PCM_RATE_32000 | \
		      SNDRV_PCM_RATE_44100 | \
		      SNDRV_PCM_RATE_48000 | \
		      SNDRV_PCM_RATE_88200 | \
		      SNDRV_PCM_RATE_96000 | \
		      SNDRV_PCM_RATE_176400 | \
		      SNDRV_PCM_RATE_192000)

#define STA32X_FORMATS \
	(SNDRV_PCM_FMTBIT_S16_LE  | SNDRV_PCM_FMTBIT_S16_BE  | \
	 SNDRV_PCM_FMTBIT_S18_3LE | SNDRV_PCM_FMTBIT_S18_3BE | \
	 SNDRV_PCM_FMTBIT_S20_3LE | SNDRV_PCM_FMTBIT_S20_3BE | \
	 SNDRV_PCM_FMTBIT_S24_3LE | SNDRV_PCM_FMTBIT_S24_3BE | \
	 SNDRV_PCM_FMTBIT_S24_LE  | SNDRV_PCM_FMTBIT_S24_BE  | \
	 SNDRV_PCM_FMTBIT_S32_LE  | SNDRV_PCM_FMTBIT_S32_BE)

/* Power-up register defaults */
static const struct reg_default sta32x_regs[] = {
	{  0x0, 0x63 },
	{  0x1, 0x80 },
	{  0x2, 0xc2 },
	{  0x3, 0x40 },
	{  0x4, 0xc2 },
	{  0x5, 0x5c },
	{  0x6, 0x10 },
	{  0x7, 0xff },
	{  0x8, 0x60 },
	{  0x9, 0x60 },
	{  0xa, 0x60 },
	{  0xb, 0x80 },
	{  0xc, 0x00 },
	{  0xd, 0x00 },
	{  0xe, 0x00 },
	{  0xf, 0x40 },
	{ 0x10, 0x80 },
	{ 0x11, 0x77 },
	{ 0x12, 0x6a },
	{ 0x13, 0x69 },
	{ 0x14, 0x6a },
	{ 0x15, 0x69 },
	{ 0x16, 0x00 },
	{ 0x17, 0x00 },
	{ 0x18, 0x00 },
	{ 0x19, 0x00 },
	{ 0x1a, 0x00 },
	{ 0x1b, 0x00 },
	{ 0x1c, 0x00 },
	{ 0x1d, 0x00 },
	{ 0x1e, 0x00 },
	{ 0x1f, 0x00 },
	{ 0x20, 0x00 },
	{ 0x21, 0x00 },
	{ 0x22, 0x00 },
	{ 0x23, 0x00 },
	{ 0x24, 0x00 },
	{ 0x25, 0x00 },
	{ 0x26, 0x00 },
	{ 0x27, 0x2d },
	{ 0x28, 0xc0 },
	{ 0x2b, 0x00 },
	{ 0x2c, 0x0c },
};

/* regulator power supply names */
static const char *sta32x_supply_names[] = {
	"Vdda",	/* analog supply, 3.3VV */
	"Vdd3",	/* digital supply, 3.3V */
	"Vcc"	/* power amp spply, 10V - 36V */
};

/* codec private data */
struct sta32x_priv {
	struct regmap *regmap;
	struct regulator_bulk_data supplies[ARRAY_SIZE(sta32x_supply_names)];
	struct snd_soc_codec *codec;
	struct sta32x_platform_data *pdata;

	unsigned int mclk;
	unsigned int format;

	u32 coef_shadow[STA32X_COEF_COUNT];
	struct delayed_work watchdog_work;
	int shutdown;
};

static const DECLARE_TLV_DB_SCALE(mvol_tlv, -12700, 50, 1);
static const DECLARE_TLV_DB_SCALE(chvol_tlv, -7950, 50, 1);
static const DECLARE_TLV_DB_SCALE(tone_tlv, -120, 200, 0);

static const char *sta32x_drc_ac[] = {
	"Anti-Clipping", "Dynamic Range Compression" };
static const char *sta32x_auto_eq_mode[] = {
	"User", "Preset", "Loudness" };
static const char *sta32x_auto_gc_mode[] = {
	"User", "AC no clipping", "AC limited clipping (10%)",
	"DRC nighttime listening mode" };
static const char *sta32x_auto