path: root/sound/soc/codecs/wm8955.c

/*
 * wm8955.c  --  WM8955 ALSA SoC Audio driver
 *
 * Copyright 2009 Wolfson Microelectronics plc
 *
 * Author: Mark Brown <broonie@opensource.wolfsonmicro.com>
 *
 * 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/regmap.h>
#include <linux/regulator/consumer.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/wm8955.h>

#include "wm8955.h"

#define WM8955_NUM_SUPPLIES 4
static const char *wm8955_supply_names[WM8955_NUM_SUPPLIES] = {
	"DCVDD",
	"DBVDD",
	"HPVDD",
	"AVDD",
};

/* codec private data */
struct wm8955_priv {
	struct regmap *regmap;

	unsigned int mclk_rate;

	int deemph;
	int fs;

	struct regulator_bulk_data supplies[WM8955_NUM_SUPPLIES];
};

static const struct reg_default wm8955_reg_defaults[] = {
	{ 2,  0x0079 },     /* R2  - LOUT1 volume */
	{ 3,  0x0079 },     /* R3  - ROUT1 volume */
	{ 5,  0x0008 },     /* R5  - DAC Control */
	{ 7,  0x000A },     /* R7  - Audio Interface */
	{ 8,  0x0000 },     /* R8  - Sample Rate */
	{ 10, 0x00FF },     /* R10 - Left DAC volume */
	{ 11, 0x00FF },     /* R11 - Right DAC volume */
	{ 12, 0x000F },     /* R12 - Bass control */
	{ 13, 0x000F },     /* R13 - Treble control */
	{ 23, 0x00C1 },     /* R23 - Additional control (1) */
	{ 24, 0x0000 },     /* R24 - Additional control (2) */
	{ 25, 0x0000 },     /* R25 - Power Management (1) */
	{ 26, 0x0000 },     /* R26 - Power Management (2) */
	{ 27, 0x0000 },     /* R27 - Additional Control (3) */
	{ 34, 0x0050 },     /* R34 - Left out Mix (1) */
	{ 35, 0x0050 },     /* R35 - Left out Mix (2) */
	{ 36, 0x0050 },     /* R36 - Right out Mix (1) */
	{ 37, 0x0050 },     /* R37 - Right Out Mix (2) */
	{ 38, 0x0050 },     /* R38 - Mono out Mix (1) */
	{ 39, 0x0050 },     /* R39 - Mono out Mix (2) */
	{ 40, 0x0079 },     /* R40 - LOUT2 volume */
	{ 41, 0x0079 },     /* R41 - ROUT2 volume */
	{ 42, 0x0079 },     /* R42 - MONOOUT volume */
	{ 43, 0x0000 },     /* R43 - Clocking / PLL */
	{ 44, 0x0103 },     /* R44 - PLL Control 1 */
	{ 45, 0x0024 },     /* R45 - PLL Control 2 */
	{ 46, 0x01BA },     /* R46 - PLL Control 3 */
	{ 59, 0x0000 },     /* R59 - PLL Control 4 */
};

static bool wm8955_writeable(struct device *dev, unsigned int reg)
{
	switch (reg) {
	case WM8955_LOUT1_VOLUME:
	case WM8955_ROUT1_VOLUME:
	case WM8955_DAC_CONTROL:
	case WM8955_AUDIO_INTERFACE:
	case WM8955_SAMPLE_RATE:
	case WM8955_LEFT_DAC_VOLUME:
	case WM8955_RIGHT_DAC_VOLUME:
	case WM8955_BASS_CONTROL:
	case WM8955_TREBLE_CONTROL:
	case WM8955_RESET:
	case WM8955_ADDITIONAL_CONTROL_1:
	case WM8955_ADDITIONAL_CONTROL_2:
	case WM8955_POWER_MANAGEMENT_1:
	case WM8955_POWER_MANAGEMENT_2:
	case WM8955_ADDITIONAL_CONTROL_3:
	case WM8955_LEFT_OUT_MIX_1:
	case WM8955_LEFT_OUT_MIX_2:
	case WM8955_RIGHT_OUT_MIX_1:
	case WM8955_RIGHT_OUT_MIX_2:
	case WM8955_MONO_OUT_MIX_1:
	case WM8955_MONO_OUT_MIX_2:
	case WM8955_LOUT2_VOLUME:
	case WM8955_ROUT2_VOLUME:
	case WM8955_MONOOUT_VOLUME:
	case WM8955_CLOCKING_PLL:
	case WM8955_PLL_CONTROL_1:
	case WM8955_PLL_CONTROL_2:
	case WM8955_PLL_CONTROL_3:
	case WM8955_PLL_CONTROL_4:
		return true;
	default:
		return false;
	}
}

static bool wm8955_volatile(struct device *dev, unsigned int reg)
{
	switch (reg) {
	case WM8955_RESET:
		return