path: root/sound/soc/codecs/wm8960.c

/*
 * wm8960.c  --  WM8960 ALSA SoC Audio driver
 *
 * Copyright 2007-11 Wolfson Microelectronics, plc
 *
 * Author: Liam Girdwood
 *
 * This program is free software; you can redistribute it and/or modify
 * it under the terms of the GNU General Public License version 2 as
 * published by the Free Software Foundation.
 */

#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/slab.h>
#include <sound/core.h>
#include <sound/pcm.h>
#include <sound/pcm_params.h>
#include <sound/soc.h>
#include <sound/initval.h>
#include <sound/tlv.h>
#include <sound/wm8960.h>

#include "wm8960.h"

/* R25 - Power 1 */
#define WM8960_VMID_MASK 0x180
#define WM8960_VREF      0x40

/* R26 - Power 2 */
#define WM8960_PWR2_LOUT1	0x40
#define WM8960_PWR2_ROUT1	0x20
#define WM8960_PWR2_OUT3	0x02

/* R28 - Anti-pop 1 */
#define WM8960_POBCTRL   0x80
#define WM8960_BUFDCOPEN 0x10
#define WM8960_BUFIOEN   0x08
#define WM8960_SOFT_ST   0x04
#define WM8960_HPSTBY    0x01

/* R29 - Anti-pop 2 */
#define WM8960_DISOP     0x40
#define WM8960_DRES_MASK 0x30

/*
 * wm8960 register cache
 * We can't read the WM8960 register space when we are
 * using 2 wire for device control, so we cache them instead.
 */
static const struct reg_default wm8960_reg_defaults[] = {
	{  0x0, 0x0097 },
	{  0x1, 0x0097 },
	{  0x2, 0x0000 },
	{  0x3, 0x0000 },
	{  0x4, 0x0000 },
	{  0x5, 0x0008 },
	{  0x6, 0x0000 },
	{  0x7, 0x000a },
	{  0x8, 0x01c0 },
	{  0x9, 0x0000 },
	{  0xa, 0x00ff },
	{  0xb, 0x00ff },

	{ 0x10, 0x0000 },
	{ 0x11, 0x007b },
	{ 0x12, 0x0100 },
	{ 0x13, 0x0032 },
	{ 0x14, 0x0000 },
	{ 0x15, 0x00c3 },
	{ 0x16, 0x00c3 },
	{ 0x17, 0x01c0 },
	{ 0x18, 0x0000 },
	{ 0x19, 0x0000 },
	{ 0x1a, 0x0000 },
	{ 0x1b, 0x0000 },
	{ 0x1c, 0x0000 },
	{ 0x1d, 0x0000 },

	{ 0x20, 0x0100 },
	{ 0x21, 0x0100 },
	{ 0x22, 0x0050 },

	{ 0x25, 0x0050 },
	{ 0x26, 0x0000 },
	{ 0x27, 0x0000 },
	{ 0x28, 0x0000 },
	{ 0x29, 0x0000 },
	{ 0x2a, 0x0040 },
	{ 0x2b, 0x0000 },
	{ 0x2c, 0x0000 },
	{ 0x2d, 0x0050 },
	{ 0x2e, 0x0050 },
	{ 0x2f, 0x0000 },
	{ 0x30, 0x0002 },
	{ 0x31, 0x0037 },

	{ 0x33, 0x0080 },
	{ 0x34, 0x0008 },
	{ 0x35, 0x0031 },
	{ 0x36, 0x0026 },
	{ 0x37, 0x00e9 },
};

static bool wm8960_volatile(struct device *dev, unsigned int reg)
{
	switch (reg) {
	case WM8960_RESET:
		return true;
	default:
		return false;
	}
}

struct wm8960_priv {
	struct regmap *regmap;
	int (*set_bias_level)(struct snd_soc_codec *,
			      enum snd_soc_bias_level level);
	struct snd_soc_dapm_widget *lout1;
	struct snd_soc_dapm_widget *rout1;
	struct snd_soc_dapm_widget *out3;
	bool deemph;
	int playback_fs;
};

#define wm8960_reset(c)	snd_soc_write(c, WM8960_RESET, 0)

/* enumerated controls */
static const char *wm8960_polarity[] = {"No Inversion", "Left Inverted",
	"Right Inverted", "Stereo Inversion"};
static const char *wm8960_3d_upper_cutoff[] = {"High", "Low"};
static const char *wm8960_3d_lower_cutoff[] = {"Low", "High"};
static const char *wm8960_alcfunc[] = {"Off"