path: root/sound/soc/codecs/wm8985.c

/*
 * wm8985.c  --  WM8985 ALSA SoC Audio driver
 *
 * Copyright 2010 Wolfson Microelectronics plc
 *
 * Author: Dimitris Papastamos <dp@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.
 *
 * TODO:
 *  o Add OUT3/OUT4 mixer controls.
 */

#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/regulator/consumer.h>
#include <linux/spi/spi.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 "wm8985.h"

#define WM8985_NUM_SUPPLIES 4
static const char *wm8985_supply_names[WM8985_NUM_SUPPLIES] = {
	"DCVDD",
	"DBVDD",
	"AVDD1",
	"AVDD2"
};

static const u16 wm8985_reg_defs[] = {
	0x0000,     /* R0  - Software Reset */
	0x0000,     /* R1  - Power management 1 */
	0x0000,     /* R2  - Power management 2 */
	0x0000,     /* R3  - Power management 3 */
	0x0050,     /* R4  - Audio Interface */
	0x0000,     /* R5  - Companding control */
	0x0140,     /* R6  - Clock Gen control */
	0x0000,     /* R7  - Additional control */
	0x0000,     /* R8  - GPIO Control */
	0x0000,     /* R9  - Jack Detect Control 1 */
	0x0000,     /* R10 - DAC Control */
	0x00FF,     /* R11 - Left DAC digital Vol */
	0x00FF,     /* R12 - Right DAC digital vol */
	0x0000,     /* R13 - Jack Detect Control 2 */
	0x0100,     /* R14 - ADC Control */
	0x00FF,     /* R15 - Left ADC Digital Vol */
	0x00FF,     /* R16 - Right ADC Digital Vol */
	0x0000,     /* R17 */
	0x012C,     /* R18 - EQ1 - low shelf */
	0x002C,     /* R19 - EQ2 - peak 1 */
	0x002C,     /* R20 - EQ3 - peak 2 */
	0x002C,     /* R21 - EQ4 - peak 3 */
	0x002C,     /* R22 - EQ5 - high shelf */
	0x0000,     /* R23 */
	0x0032,     /* R24 - DAC Limiter 1 */
	0x0000,     /* R25 - DAC Limiter 2 */
	0x0000,     /* R26 */
	0x0000,     /* R27 - Notch Filter 1 */
	0x0000,     /* R28 - Notch Filter 2 */
	0x0000,     /* R29 - Notch Filter 3 */
	0x0000,     /* R30 - Notch Filter 4 */
	0x0000,     /* R31 */
	0x0038,     /* R32 - ALC control 1 */
	0x000B,     /* R33 - ALC control 2 */
	0x0032,     /* R34 - ALC control 3 */
	0x0000,     /* R35 - Noise Gate */
	0x0008,     /* R36 - PLL N */
	0x000C,     /* R37 - PLL K 1 */
	0x0093,     /* R38 - PLL K 2 */
	0x00E9,     /* R39 - PLL K 3 */
	0x0000,     /* R40 */
	0x0000,     /* R41 - 3D control */
	0x0000,     /* R42 - OUT4 to ADC */
	0x0000,     /* R43 - Beep control */
	0x0033,     /* R44 - Input ctrl */
	0x0010,     /* R45 - Left INP PGA gain ctrl */
	0x0010,     /* R46 - Right INP PGA gain ctrl */
	0x0100,     /* R47 - Left ADC BOOST ctrl */
	0x0100,     /* R48 - Right ADC BOOST ctrl */
	0x0002,     /* R49 - Output ctrl */
	0x0001,     /* R50 - Left mixer ctrl */
	0x0001,     /* R51 - Right mixer ctrl */
	0x0039,     /* R52 - LOUT1 (HP) volume ctrl */
	0x0039,     /* R53 - ROUT1 (HP) volume ctrl */
	0x0039,     /* R54 - LOUT2 (SPK) volume ctrl */
	0x0039,     /* R55 - ROUT2 (SPK) volume ctrl */
	0x0001,     /* R56 - OUT3 mixer ctrl */
	0x0001,     /* R57 - OUT4 (MONO) mix ctrl */
	0x0001,     /* R58 */
	0x0000,     /* R59 */
	0x0004,     /* R60 - OUTPUT ctrl */
	0x0000,     /* R61 - BIAS CTRL */
	0x0180,     /* R62 */
	0x0000      /* R63 */
};

/*
 * latch bit 8 of these registers to ensure instant
 * volume updates
 */
static const int volume_update_regs[] = {
	WM8985_LEFT_DAC_DIGITAL_VOL,
	WM8985_RIGHT_DAC_DIGITAL_VOL,
	WM8985_LEFT_ADC_DIGITAL_VOL,
	WM8985_RIGHT_ADC_DIGITAL_VOL,
	WM8985_LOUT2_SPK_VOLUME_CTRL,
	WM8985_ROUT2_SPK_VOLUME_CTRL,
	WM8985_LOUT1_HP_VOLUME_CTRL,
	WM8985_ROUT1_HP_VOLUME_CTRL,
	WM8985_LEFT_INP_PGA_GAIN_CTRL,
	WM8985_RIGHT_INP_PGA_GAIN_CTRL
};

struct wm8985_priv {
	enum snd_soc_control_type control_type;
	struct regulator_bulk_data supplies[WM8985_NUM_SUPPLIES];
	unsigned int sysclk;
	unsigned int bclk;
};

static const struct {
	int div;
	int ratio;
} fs_ratios[] = {
	{