path: root/sound/soc/codecs/wm9090.c

/*
 * ALSA SoC WM9090 driver
 *
 * Copyright 2009-12 Wolfson Microelectronics
 *
 * 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.
 *
 * This program is distributed in the hope that it will be useful, but
 * WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
 * General Public License for more details.
 *
 * You should have received a copy of the GNU General Public License
 * along with this program; if not, write to the Free Software
 * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA
 * 02110-1301 USA
 */

#include <linux/module.h>
#include <linux/errno.h>
#include <linux/device.h>
#include <linux/i2c.h>
#include <linux/delay.h>
#include <linux/regmap.h>
#include <linux/slab.h>
#include <sound/initval.h>
#include <sound/soc.h>
#include <sound/tlv.h>
#include <sound/wm9090.h>

#include "wm9090.h"

static const struct reg_default wm9090_reg_defaults[] = {
	{ 1,  0x0006 },     /* R1   - Power Management (1) */
	{ 2,  0x6000 },     /* R2   - Power Management (2) */
	{ 3,  0x0000 },     /* R3   - Power Management (3) */
	{ 6,  0x01C0 },     /* R6   - Clocking 1 */
	{ 22, 0x0003 },     /* R22  - IN1 Line Control */
	{ 23, 0x0003 },     /* R23  - IN2 Line Control */
	{ 24, 0x0083 },     /* R24  - IN1 Line Input A Volume */
	{ 25, 0x0083 },     /* R25  - IN1  Line Input B Volume */
	{ 26, 0x0083 },     /* R26  - IN2 Line Input A Volume */
	{ 27, 0x0083 },     /* R27  - IN2 Line Input B Volume */
	{ 28, 0x002D },     /* R28  - Left Output Volume */
	{ 29, 0x002D },     /* R29  - Right Output Volume */
	{ 34, 0x0100 },     /* R34  - SPKMIXL Attenuation */
	{ 35, 0x0010 },     /* R36  - SPKOUT Mixers */
	{ 37, 0x0140 },     /* R37  - ClassD3 */
	{ 38, 0x0039 },     /* R38  - Speaker Volume Left */
	{ 45, 0x0000 },     /* R45  - Output Mixer1 */
	{ 46, 0x0000 },     /* R46  - Output Mixer2 */
	{ 47, 0x0100 },     /* R47  - Output Mixer3 */
	{ 48, 0x0100 },     /* R48  - Output Mixer4 */
	{ 54, 0x0000 },     /* R54  - Speaker Mixer */
	{ 57, 0x000D },     /* R57  - AntiPOP2 */
	{ 70, 0x0000 },     /* R70  - Write Sequencer 0 */
	{ 71, 0x0000 },     /* R71  - Write Sequencer 1 */
	{ 72, 0x0000 },     /* R72  - Write Sequencer 2 */
	{ 73, 0x0000 },     /* R73  - Write Sequencer 3 */
	{ 74, 0x0000 },     /* R74  - Write Sequencer 4 */
	{ 75, 0x0000 },     /* R75  - Write Sequencer 5 */
	{ 76, 0x1F25 },     /* R76  - Charge Pump 1 */
	{ 85, 0x054A },     /* R85  - DC Servo 1 */
	{ 87, 0x0000 },     /* R87  - DC Servo 3 */
	{ 96, 0x0100 },     /* R96  - Analogue HP 0 */
	{ 98, 0x8640 },     /* R98  - AGC Control 0 */
	{ 99, 0xC000 },     /* R99  - AGC Control 1 */
	{ 100, 0x0200 },     /* R100 - AGC Control 2 */
};

/* This struct is used to save the context */
struct wm9090_priv {
	struct wm9090_platform_data pdata;
	struct regmap *regmap;
};

static bool wm9090_volatile(struct device *dev, unsigned int reg)
{
	switch (reg) {
	case WM9090_SOFTWARE_RESET:
	case WM9090_DC_SERVO_0:
	case WM9090_DC_SERVO_READBACK_0:
	case WM9090_DC_SERVO_READBACK_1:
	case WM9090_DC_SERVO_READBACK_2:
		return true;

	default:
		return false;
	}
}

static bool wm9090_readable(struct device *dev, unsigned int reg)
{
	switch (reg) {
	case WM9090_SOFTWARE_RESET:
	case WM9090_POWER_MANAGEMENT_1:
	case WM9090_POWER_MANAGEMENT_2:
	case WM9090_POWER_MANAGEMENT_3:
	case WM9090_CLOCKING_1:
	case WM9090_IN1_LINE_CONTROL:
	case WM9090_IN2_LINE_CONTROL:
	case WM9090_IN1_LINE_INPUT_A_VOLUME:
	case WM9090_IN1_LINE_INPUT_B_VOLUME:
	case WM9090_IN2_LINE_INPUT_A_VOLUME:
	case WM9090_IN2_LINE_INPUT_B_VOLUME:
	case WM9090_LEFT_OUTPUT_VOLUME:
	case WM9090_RIGHT_OUTPUT_VOLUME:
	case WM9090_SPKMIXL_ATTENUATION:
	case WM9090_SPKOUT_MIXERS:
	case WM9090_CLASSD3:
	case WM9090_SPEAKER_VOLUME_LEFT:
	case WM9090_OUTPUT_MIXER1:
	case WM9090_OUTPUT_MIXER2:
	case WM9090_OUTPUT_MIXER3:
	case WM9090_OUTPUT_MIXER4:
	case WM9090_SPEAKER_MIXER:
	case WM9090_ANTIPOP2:
	case WM9090_WRITE_SEQUENCER_0:
	case WM9090_WRITE_SEQUENCER_1:
	case WM9090_WRITE_SEQUENCER_2:
	case WM9090_WRITE_SEQUENCER_3:
	case WM9090_WRITE_SEQUENCER_4:
	case WM9090_WRITE_SEQUENCER_5:
	case WM9090_CHARGE_PUMP_1:
	case WM9090_DC_SERVO_0:
	case WM9090_DC_SERVO_1:
	case WM9090_DC_SERVO_3:
	case WM9090_DC_SERVO_READBACK_0:
	case WM9090_DC_SERVO_READBACK_1:
	case WM9090_DC_SERVO_READBACK_2:
	case WM9090_ANALOGUE_HP_0:
	case WM9090_AGC_CONTROL_0:
	case WM9090_AGC_CONTROL_1:
	case WM9090_AGC_CONTROL_2:
		return true;

	default:
		return false;
	}
}

static void wait_for_dc_servo(struct snd_soc_codec *codec)
{
	unsigned int reg;
	int count = 0;

	dev_dbg(codec->dev, "Waiting for DC servo...\n");
	do {
		count++;
		msleep(1);
		reg = snd_soc_read(codec, WM9090_DC_SERVO_READBACK_0);
		dev_dbg(codec->dev, "DC servo status: %x\n", reg);
	} while ((reg & WM9090_DCS_CAL_COMPLETE_MASK)
		 != WM9090_DCS_CAL_COMPLETE_MASK && count < 1000);

	if ((reg & WM9090_DCS_CAL_COMPLETE_MASK)
	    != WM9090_DCS_CAL_COMPLETE_MASK)
		dev_err(codec->dev, "Timed out waiting for DC Servo\n");
}

static const unsigned int in_tlv[] = {
	TLV_DB_RANGE_HEAD(3),
	0, 0, TLV_DB_SCALE_ITEM(-600, 0, 0),
	1, 3, TLV_DB_SCALE_ITEM(-350, 350, 0),
	4, 6, TLV_DB_SCALE_ITEM(600, 600, 0),
};
static const unsigned int mix_tlv[] = {
	TLV_DB_RANGE_HEAD(2),
	0, 2, TLV_DB_SCALE_ITEM(-1200, 300, 0),
	3, 3, TLV_DB_SCALE_ITEM(0, 0, 0),
};
static const DECLARE_TLV_DB_SCALE(out_tlv, -5700, 100, 0);
static const unsigned int spkboost_tlv[] = {
	TLV_DB_RANGE_HEAD(2),
	0, 6, TLV_DB_SCALE_ITEM(0, 150, 0),
	7, 7, TLV_DB_SCALE_ITEM(1200, 0, 0),
};

static const struct snd_kcontrol_new wm9090_controls[] = {
SOC_SINGLE_TLV("IN1A Volume", WM9090_IN1_LINE_INPUT_A_VOLUME, 0, 6, 0,
	       in_tlv),
SOC_SINGLE("IN1A Switch", WM9090_IN1_LINE_INPUT_A_VOLUME, 7, 1, 1),
SOC_SINGLE("IN1A ZC Switch", WM9090_IN1_LINE_INPUT_A_VOLUME, 6, 1, 0),

SOC_SINGLE_TLV("IN2A Volume", WM9090_IN2_LINE_INPUT_A_VOLUME, 0, 6, 0,
	       in_tlv),
SOC_SINGLE("IN2A Switch", WM9090_IN2_LINE_INPUT_A_VOLUME, 7, 1, 1