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

/*
 * wm8960.c  --  WM8960 ALSA SoC Audio driver
 *
 * 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/platform_device.h>
#include <linux/slab.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/wm8960.h>

#include "wm8960.h"

#define AUDIO_NAME "wm8960"

struct snd_soc_codec_device soc_codec_dev_wm8960;

/* 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 u16 wm8960_reg[WM8960_CACHEREGNUM] = {
	0x0097, 0x0097, 0x0000, 0x0000,
	0x0000, 0x0008, 0x0000, 0x000a,
	0x01c0, 0x0000, 0x00ff, 0x00ff,
	0x0000, 0x0000, 0x0000, 0x0000,
	0x0000, 0x007b, 0x0100, 0x0032,
	0x0000, 0x00c3, 0x00c3, 0x01c0,
	0x0000, 0x0000, 0x0000, 0x0000,
	0x0000, 0x0000, 0x0000, 0x0000,
	0x0100, 0x0100, 0x0050, 0x0050,
	0x0050, 0x0050, 0x0000, 0x0000,
	0x0000, 0x0000, 0x0040, 0x0000,
	0x0000, 0x0050, 0x0050, 0x0000,
	0x0002, 0x0037, 0x004d, 0x0080,
	0x0008, 0x0031, 0x0026, 0x00e9,
};

struct wm8960_priv {
	u16 reg_cache[WM8960_CACHEREGNUM];
	struct snd_soc_codec codec;
	struct snd_soc_dapm_widget *lout1;
	struct snd_soc_dapm_widget *rout1;
	struct snd_soc_dapm_widget *out3;
};

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

/* enumerated controls */
static const char *wm8960_deemph[] = {"None", "32Khz", "44.1Khz", "48Khz"};
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", "Right", "Left", "Stereo"};
static const char *wm8960_alcmode[] = {"ALC", "Limiter"};

static const struct soc_enum wm8960_enum[] = {
	SOC_ENUM_SINGLE(WM8960_DACCTL1, 1, 4, wm8960_deemph),
	SOC_ENUM_SINGLE(WM8960_DACCTL1, 5, 4, wm8960_polarity),
	SOC_ENUM_SINGLE(WM8960_DACCTL2, 5, 4, wm8960_polarity),
	SOC_ENUM_SINGLE(WM8960_3D, 6, 2, wm8960_3d_upper_cutoff),
	SOC_ENUM_SINGLE(WM8960_3D, 5, 2, wm8960_3d_lower_cutoff),
	SOC_ENUM_SINGLE(WM8960_ALC1, 7, 4, wm8960_alcfunc),
	SOC_ENUM_SINGLE(WM8960_ALC3, 8, 2, wm8960_alcmode),
};

static const DECLARE_TLV_DB_SCALE(adc_tlv, -9700, 50, 0);
static const DECLARE_TLV_DB_SCALE(dac_tlv, -12700, 50, 1);
static const DECLARE_TLV_DB_SCALE(bypass_tlv, -2100, 300, 0);
static const DECLARE_TLV_DB_SCALE(out_tlv, -12100, 100, 1);

static const struct snd_kcontrol_new wm8960_snd_controls[] = {
SOC_DOUBLE_R_TLV("Capture Volume", WM8960_LINVOL, WM8960_RINVOL,
		 0, 63, 0, adc_tlv),
SOC_DOUBLE_R("Capture Volume ZC Switch", WM8960_LINVOL, WM8960_RINVOL,
	6, 1, 0),
SOC_DOUBLE_R("Capture Switch", WM8960_LINVOL, WM8960_RINVOL,
	7, 1, 0),

SOC_DOUBLE_R_TLV("Playback Volume", WM8960_LDAC, WM8960_RDAC,
		 0, 255, 0, dac_tlv),

S