sound/soc/codecs/max9877.c - pub/scm/linux/kernel/git/ebiederm/linux-namespace-control-devel - Git at Google

 /*
  * max9877.c  --  amp driver for max9877
  *
  * Copyright (C) 2009 Samsung Electronics Co.Ltd
  * Author: Joonyoung Shim <jy0922.shim@samsung.com>
  *
  *  This program is free software; you can redistribute  it and/or modify it
  *  under  the terms of  the GNU General  Public License as published by the
  *  Free Software Foundation;  either version 2 of the  License, or (at your
  *  option) any later version.
  *
  */

 #include <linux/module.h>
 #include <linux/init.h>
 #include <linux/i2c.h>
 #include <sound/soc.h>
 #include <sound/tlv.h>

 #include "max9877.h"

 static struct i2c_client *i2c;

 static u8 max9877_regs[5] = { 0x40, 0x00, 0x00, 0x00, 0x49 };

 static void max9877_write_regs(void)
 {
 	unsigned int i;
 	u8 data[6];

 	data[0] = MAX9877_INPUT_MODE;
 	for (i = 0; i < ARRAY_SIZE(max9877_regs); i++)
 		data[i + 1] = max9877_regs[i];

 	if (i2c_master_send(i2c, data, 6) != 6)
 		dev_err(&i2c->dev, "i2c write failed\n");
 }

 static int max9877_get_reg(struct snd_kcontrol *kcontrol,
 		struct snd_ctl_elem_value *ucontrol)
 {
 	struct soc_mixer_control *mc =
 		(struct soc_mixer_control *)kcontrol->private_value;
 	unsigned int reg = mc->reg;
 	unsigned int shift = mc->shift;
 	unsigned int mask = mc->max;
 	unsigned int invert = mc->invert;

 	ucontrol->value.integer.value[0] = (max9877_regs[reg] >> shift) & mask;

 	if (invert)
 		ucontrol->value.integer.value[0] =
 			mask - ucontrol->value.integer.value[0];

 	return 0;
 }

 static int max9877_set_reg(struct snd_kcontrol *kcontrol,
 		struct snd_ctl_elem_value *ucontrol)
 {
 	struct soc_mixer_control *mc =
 		(struct soc_mixer_control *)kcontrol->private_value;
 	unsigned int reg = mc->reg;
 	unsigned int shift = mc->shift;
 	unsigned int mask = mc->max;
 	unsigned int invert = mc->invert;
 	unsigned int val = (ucontrol->value.integer.value[0] & mask);

 	if (invert)
 		val = mask - val;

 	if (((max9877_regs[reg] >> shift) & mask) == val)
 		return 0;

 	max9877_regs[reg] &= ~(mask << shift);
 	max9877_regs[reg] |= val << shift;
 	max9877_write_regs();

 	return 1;
 }

 static int max9877_get_2reg(struct snd_kcontrol *kcontrol,
 		struct snd_ctl_elem_value *ucontrol)
 {
 	struct soc_mixer_control *mc =
 		(struct soc_mixer_control *)kcontrol->private_value;
 	unsigned int reg = mc->reg;
 	unsigned int reg2 = mc->rreg;
 	unsigned int shift = mc->shift;
 	unsigned int mask = mc->max;

 	ucontrol->value.integer.value[0] = (max9877_regs[reg] >> shift) & mask;
 	ucontrol->value.integer.value[1] = (max9877_regs[reg2] >> shift) & mask;

 	return 0;
 }

 static int max9877_set_2reg(struct snd_kcontrol *kcontrol,
 		struct snd_ctl_elem_value *ucontrol)
 {
 	struct soc_mixer_control *mc =
 		(struct soc_mixer_control *)kcontrol->private_value;
 	unsigned int reg = mc->reg;
 	unsigned int reg2 = mc->rreg;
 	unsigned int shift = mc->shift;
 	unsigned int mask = mc->max;
 	unsigned int val = (ucontrol->value.integer.value[0] & mask);
 	unsigned int val2 = (ucontrol->value.integer.value[1] & mask);
 	unsigned int change = 1;

 	if (((max9877_regs[reg] >> shift) & mask) == val)
 		change = 0;

 	if (((max9877_regs[reg2] >> shift) & mask) == val2)
 		change = 0;

 	if (change) {
 		max9877_regs[reg] &= ~(mask << shift);
 		max9877_regs[reg] |= val << shift;
 		max9877_regs[reg2] &= ~(mask << shift);
 		max9877_regs[reg2] |= val2 << shift;
 		max9877_write_regs();
 	}

 	return change;
 }

 static int max9877_get_out_mode(struct snd_kcontrol *kcontrol,
 		struct snd_ctl_elem_value *ucontrol)
 {
 	u8 value = max9877_regs[MAX9877_OUTPUT_MODE] & MAX9877_OUTMODE_MASK;

 	if (value)
 		value -= 1;

 	ucontrol->value.integer.value[0] = value;
 	return 0;
 }

 static int max9877_set_out_mode(struct snd_kcontrol *kcontrol,
 		struct snd_ctl_elem_value *ucontrol)
 {
 	u8 value = ucontrol->value.integer.value[0];

 	value += 1;

 	if ((max9877_regs[MAX9877_OUTPUT_MODE] & MAX9877_OUTMODE_MASK) == value)
 		return 0;

 	max9877_regs[MAX9877_OUTPUT_MODE] &= ~MAX9877_OUTMODE_MASK;
 	max9877_regs[MAX9877_OUTPUT_MODE] |= value;
 	max9877_write_regs();
 	return 1;
 }

 static int max9877_get_osc_mode(struct snd_kcontrol *kcontrol,
 		struct snd_ctl_elem_value *ucontrol)
 {
 	u8 value = (max9877_regs[MAX9877_OUTPUT_MODE] & MAX9877_OSC_MASK);

 	value = value >> MAX9877_OSC_OFFSET;

 	ucontrol->value.integer.value[0] = value;
 	return 0;
 }

 static int max9877_set_osc_mode(struct snd_kcontrol *kcontrol,
 		struct snd_ctl_elem_value *ucontrol)
 {
 	u8 value = ucontrol->value.integer.value[0];

 	value = value << MAX9877_OSC_OFFSET;
 	if ((max9877_regs[MAX9877_OUTPUT_MODE] & MAX9877_OSC_MASK) == value)
 		return 0;

 	max9877_regs[MAX9877_OUTPUT_MODE] &= ~MAX9877_OSC_MASK;
 	max9877_regs[MAX9877_OUTPUT_MODE] |= value;
 	max9877_write_regs();
 	return 1;
 }

 static const unsigned int max9877_pgain_tlv[] = {
 	TLV_DB_RANGE_HEAD(2),
 	0, 1, TLV_DB_SCALE_ITEM(0, 900, 0),
 	2, 2, TLV_DB_SCALE_ITEM(2000, 0, 0),
 };

 static const unsigned int max9877_output_tlv[] = {
 	TLV_DB_RANGE_HEAD(4),
 	0, 7, TLV_DB_SCALE_ITEM(-7900, 400, 1),
 	8, 15, TLV_DB_SCALE_ITEM(-4700, 300, 0),
 	16, 23, TLV_DB_SCALE_ITEM(-2300, 200, 0),
 	24, 31, TLV_DB_SCALE_ITEM(-700, 100, 0),
 };

 static const char *max9877_out_mode[] = {
 	"INA -> SPK",
 	"INA -> HP",
 	"INA -> SPK and HP",
 	"INB -> SPK",
 	"INB -> HP",
 	"INB -> SPK and HP",
 	"INA + INB -> SPK",
 	"INA + INB -> HP",
 	"INA + INB -> SPK and HP",
 };

 static const char *max9877_osc_mode[] = {
 	"1176KHz",
 	"1100KHz",
 	"700KHz",
 };

 static const struct soc_enum max9877_enum[] = {
 	SOC_ENUM_SINGLE_EXT(ARRAY_SIZE(max9877_out_mode), max9877_out_mode),
 	SOC_ENUM_SINGLE_EXT(ARRAY_SIZE(max9877_osc_mode), max9877_osc_mode),
 };

 static const struct snd_kcontrol_new max9877_controls[] = {
 	SOC_SINGLE_EXT_TLV("MAX9877 PGAINA Playback Volume",
 			MAX9877_INPUT_MODE, 0, 2, 0,
 			max9877_get_reg, max9877_set_reg, max9877_pgain_tlv),
 	SOC_SINGLE_EXT_TLV("MAX9877 PGAINB Playback Volume",
 			MAX9877_INPUT_MODE, 2, 2, 0,
 			max9877_get_reg, max9877_set_reg, max9877_pgain_tlv),
 	SOC_SINGLE_EXT_TLV("MAX9877 Amp Speaker Playback Volume",
 			MAX9877_SPK_VOLUME, 0, 31, 0,
 			max9877_get_reg, max9877_set_reg, max9877_output_tlv),
 	SOC_DOUBLE_R_EXT_TLV("MAX9877 Amp HP Playback Volume",
 			MAX9877_HPL_VOLUME, MAX9877_HPR_VOLUME, 0, 31, 0,
 			max9877_get_2reg, max9877_set_2reg, max9877_output_tlv),
 	SOC_SINGLE_EXT("MAX9877 INB Stereo Switch",
 			MAX9877_INPUT_MODE, 4, 1, 1,
 			max9877_get_reg, max9877_set_reg),
 	SOC_SINGLE_EXT("MAX9877 INA Stereo Switch",
 			MAX9877_INPUT_MODE, 5, 1, 1,
 			max9877_get_reg, max9877_set_reg),
 	SOC_SINGLE_EXT("MAX9877 Zero-crossing detection Switch",
 			MAX9877_INPUT_MODE, 6, 1, 0,
 			max9877_get_reg, max9877_set_reg),
 	SOC_SINGLE_EXT("MAX9877 Bypass Mode Switch",
 			MAX9877_OUTPUT_MODE, 6, 1, 0,
 			max9877_get_reg, max9877_set_reg),
 	SOC_SINGLE_EXT("MAX9877 Shutdown Mode Switch",
 			MAX9877_OUTPUT_MODE, 7, 1, 1,
 			max9877_get_reg, max9877_set_reg),
 	SOC_ENUM_EXT("MAX9877 Output Mode", max9877_enum[0],
 			max9877_get_out_mode, max9877_set_out_mode),
 	SOC_ENUM_EXT("MAX9877 Oscillator Mode", max9877_enum[1],
 			max9877_get_osc_mode, max9877_set_osc_mode),
 };

 /* This function is called from ASoC machine driver */
 int max9877_add_controls(struct snd_soc_codec *codec)
 {
 	return snd_soc_add_controls(codec, max9877_controls,
 			ARRAY_SIZE(max9877_controls));
 }
 EXPORT_SYMBOL_GPL(max9877_add_controls);

 static int __devinit max9877_i2c_probe(struct i2c_client *client,
 		const struct i2c_device_id *id)
 {
 	i2c = client;

 	max9877_write_regs();

 	return 0;
 }

 static __devexit int max9877_i2c_remove(struct i2c_client *client)
 {
 	i2c = NULL;

 	return 0;
 }

 static const struct i2c_device_id max9877_i2c_id[] = {
 	{ "max9877", 0 },
 	{ }
 };
 MODULE_DEVICE_TABLE(i2c, max9877_i2c_id);

 static struct i2c_driver max9877_i2c_driver = {
 	.driver = {
 		.name = "max9877",
 		.owner = THIS_MODULE,
 	},
 	.probe = max9877_i2c_probe,
 	.remove = __devexit_p(max9877_i2c_remove),
 	.id_table = max9877_i2c_id,
 };

 static int __init max9877_init(void)
 {
 	return i2c_add_driver(&max9877_i2c_driver);
 }
 module_init(max9877_init);

 static void __exit max9877_exit(void)
 {
 	i2c_del_driver(&max9877_i2c_driver);
 }
 module_exit(max9877_exit);

 MODULE_DESCRIPTION("ASoC MAX9877 amp driver");
 MODULE_AUTHOR("Joonyoung Shim <jy0922.shim@samsung.com>");
 MODULE_LICENSE("GPL");
	/*
	* max9877.c -- amp driver for max9877
	*
	* Copyright (C) 2009 Samsung Electronics Co.Ltd
	* Author: Joonyoung Shim <jy0922.shim@samsung.com>
	*
	* This program is free software; you can redistribute it and/or modify it
	* under the terms of the GNU General Public License as published by the
	* Free Software Foundation; either version 2 of the License, or (at your
	* option) any later version.
	*
	*/

	#include <linux/module.h>
	#include <linux/init.h>
	#include <linux/i2c.h>
	#include <sound/soc.h>
	#include <sound/tlv.h>

	#include "max9877.h"

	static struct i2c_client *i2c;

	static u8 max9877_regs[5] = { 0x40, 0x00, 0x00, 0x00, 0x49 };

	static void max9877_write_regs(void)
	{
	unsigned int i;
	u8 data[6];

	data[0] = MAX9877_INPUT_MODE;
	for (i = 0; i < ARRAY_SIZE(max9877_regs); i++)
	data[i + 1] = max9877_regs[i];

	if (i2c_master_send(i2c, data, 6) != 6)
	dev_err(&i2c->dev, "i2c write failed\n");
	}

	static int max9877_get_reg(struct snd_kcontrol *kcontrol,
	struct snd_ctl_elem_value *ucontrol)
	{
	struct soc_mixer_control *mc =
	(struct soc_mixer_control *)kcontrol->private_value;
	unsigned int reg = mc->reg;
	unsigned int shift = mc->shift;
	unsigned int mask = mc->max;
	unsigned int invert = mc->invert;

	ucontrol->value.integer.value[0] = (max9877_regs[reg] >> shift) & mask;

	if (invert)
	ucontrol->value.integer.value[0] =
	mask - ucontrol->value.integer.value[0];

	return 0;
	}

	static int max9877_set_reg(struct snd_kcontrol *kcontrol,
	struct snd_ctl_elem_value *ucontrol)
	{
	struct soc_mixer_control *mc =
	(struct soc_mixer_control *)kcontrol->private_value;
	unsigned int reg = mc->reg;
	unsigned int shift = mc->shift;
	unsigned int mask = mc->max;
	unsigned int invert = mc->invert;
	unsigned int val = (ucontrol->value.integer.value[0] & mask);

	if (invert)
	val = mask - val;

	if (((max9877_regs[reg] >> shift) & mask) == val)
	return 0;

	max9877_regs[reg] &= ~(mask << shift);
	max9877_regs[reg] \|= val << shift;
	max9877_write_regs();

	return 1;
	}

	static int max9877_get_2reg(struct snd_kcontrol *kcontrol,
	struct snd_ctl_elem_value *ucontrol)
	{
	struct soc_mixer_control *mc =
	(struct soc_mixer_control *)kcontrol->private_value;
	unsigned int reg = mc->reg;
	unsigned int reg2 = mc->rreg;
	unsigned int shift = mc->shift;
	unsigned int mask = mc->max;

	ucontrol->value.integer.value[0] = (max9877_regs[reg] >> shift) & mask;
	ucontrol->value.integer.value[1] = (max9877_regs[reg2] >> shift) & mask;

	return 0;
	}

	static int max9877_set_2reg(struct snd_kcontrol *kcontrol,
	struct snd_ctl_elem_value *ucontrol)
	{
	struct soc_mixer_control *mc =
	(struct soc_mixer_control *)kcontrol->private_value;
	unsigned int reg = mc->reg;
	unsigned int reg2 = mc->rreg;
	unsigned int shift = mc->shift;
	unsigned int mask = mc->max;
	unsigned int val = (ucontrol->value.integer.value[0] & mask);
	unsigned int val2 = (ucontrol->value.integer.value[1] & mask);
	unsigned int change = 1;

	if (((max9877_regs[reg] >> shift) & mask) == val)
	change = 0;

	if (((max9877_regs[reg2] >> shift) & mask) == val2)
	change = 0;

	if (change) {
	max9877_regs[reg] &= ~(mask << shift);
	max9877_regs[reg] \|= val << shift;
	max9877_regs[reg2] &= ~(mask << shift);
	max9877_regs[reg2] \|= val2 << shift;
	max9877_write_regs();
	}

	return change;
	}

	static int max9877_get_out_mode(struct snd_kcontrol *kcontrol,
	struct snd_ctl_elem_value *ucontrol)
	{
	u8 value = max9877_regs[MAX9877_OUTPUT_MODE] & MAX9877_OUTMODE_MASK;

	if (value)
	value -= 1;

	ucontrol->value.integer.value[0] = value;
	return 0;
	}

	static int max9877_set_out_mode(struct snd_kcontrol *kcontrol,
	struct snd_ctl_elem_value *ucontrol)
	{
	u8 value = ucontrol->value.integer.value[0];

	value += 1;

	if ((max9877_regs[MAX9877_OUTPUT_MODE] & MAX9877_OUTMODE_MASK) == value)
	return 0;

	max9877_regs[MAX9877_OUTPUT_MODE] &= ~MAX9877_OUTMODE_MASK;
	max9877_regs[MAX9877_OUTPUT_MODE] \|= value;
	max9877_write_regs();
	return 1;
	}

	static int max9877_get_osc_mode(struct snd_kcontrol *kcontrol,
	struct snd_ctl_elem_value *ucontrol)
	{
	u8 value = (max9877_regs[MAX9877_OUTPUT_MODE] & MAX9877_OSC_MASK);

	value = value >> MAX9877_OSC_OFFSET;

	ucontrol->value.integer.value[0] = value;
	return 0;
	}

	static int max9877_set_osc_mode(struct snd_kcontrol *kcontrol,
	struct snd_ctl_elem_value *ucontrol)
	{
	u8 value = ucontrol->value.integer.value[0];

	value = value << MAX9877_OSC_OFFSET;
	if ((max9877_regs[MAX9877_OUTPUT_MODE] & MAX9877_OSC_MASK) == value)
	return 0;

	max9877_regs[MAX9877_OUTPUT_MODE] &= ~MAX9877_OSC_MASK;
	max9877_regs[MAX9877_OUTPUT_MODE] \|= value;
	max9877_write_regs();
	return 1;
	}

	static const unsigned int max9877_pgain_tlv[] = {
	TLV_DB_RANGE_HEAD(2),
	0, 1, TLV_DB_SCALE_ITEM(0, 900, 0),
	2, 2, TLV_DB_SCALE_ITEM(2000, 0, 0),
	};

	static const unsigned int max9877_output_tlv[] = {
	TLV_DB_RANGE_HEAD(4),
	0, 7, TLV_DB_SCALE_ITEM(-7900, 400, 1),
	8, 15, TLV_DB_SCALE_ITEM(-4700, 300, 0),
	16, 23, TLV_DB_SCALE_ITEM(-2300, 200, 0),
	24, 31, TLV_DB_SCALE_ITEM(-700, 100, 0),
	};

	static const char *max9877_out_mode[] = {
	"INA -> SPK",
	"INA -> HP",
	"INA -> SPK and HP",
	"INB -> SPK",
	"INB -> HP",
	"INB -> SPK and HP",
	"INA + INB -> SPK",
	"INA + INB -> HP",
	"INA + INB -> SPK and HP",
	};

	static const char *max9877_osc_mode[] = {
	"1176KHz",
	"1100KHz",
	"700KHz",
	};

	static const struct soc_enum max9877_enum[] = {
	SOC_ENUM_SINGLE_EXT(ARRAY_SIZE(max9877_out_mode), max9877_out_mode),
	SOC_ENUM_SINGLE_EXT(ARRAY_SIZE(max9877_osc_mode), max9877_osc_mode),
	};

	static const struct snd_kcontrol_new max9877_controls[] = {
	SOC_SINGLE_EXT_TLV("MAX9877 PGAINA Playback Volume",
	MAX9877_INPUT_MODE, 0, 2, 0,
	max9877_get_reg, max9877_set_reg, max9877_pgain_tlv),
	SOC_SINGLE_EXT_TLV("MAX9877 PGAINB Playback Volume",
	MAX9877_INPUT_MODE, 2, 2, 0,
	max9877_get_reg, max9877_set_reg, max9877_pgain_tlv),
	SOC_SINGLE_EXT_TLV("MAX9877 Amp Speaker Playback Volume",
	MAX9877_SPK_VOLUME, 0, 31, 0,
	max9877_get_reg, max9877_set_reg, max9877_output_tlv),
	SOC_DOUBLE_R_EXT_TLV("MAX9877 Amp HP Playback Volume",
	MAX9877_HPL_VOLUME, MAX9877_HPR_VOLUME, 0, 31, 0,
	max9877_get_2reg, max9877_set_2reg, max9877_output_tlv),
	SOC_SINGLE_EXT("MAX9877 INB Stereo Switch",
	MAX9877_INPUT_MODE, 4, 1, 1,
	max9877_get_reg, max9877_set_reg),
	SOC_SINGLE_EXT("MAX9877 INA Stereo Switch",
	MAX9877_INPUT_MODE, 5, 1, 1,
	max9877_get_reg, max9877_set_reg),
	SOC_SINGLE_EXT("MAX9877 Zero-crossing detection Switch",
	MAX9877_INPUT_MODE, 6, 1, 0,
	max9877_get_reg, max9877_set_reg),
	SOC_SINGLE_EXT("MAX9877 Bypass Mode Switch",
	MAX9877_OUTPUT_MODE, 6, 1, 0,
	max9877_get_reg, max9877_set_reg),
	SOC_SINGLE_EXT("MAX9877 Shutdown Mode Switch",
	MAX9877_OUTPUT_MODE, 7, 1, 1,
	max9877_get_reg, max9877_set_reg),
	SOC_ENUM_EXT("MAX9877 Output Mode", max9877_enum[0],
	max9877_get_out_mode, max9877_set_out_mode),
	SOC_ENUM_EXT("MAX9877 Oscillator Mode", max9877_enum[1],
	max9877_get_osc_mode, max9877_set_osc_mode),
	};

	/* This function is called from ASoC machine driver */
	int max9877_add_controls(struct snd_soc_codec *codec)
	{
	return snd_soc_add_controls(codec, max9877_controls,
	ARRAY_SIZE(max9877_controls));
	}
	EXPORT_SYMBOL_GPL(max9877_add_controls);

	static int __devinit max9877_i2c_probe(struct i2c_client *client,
	const struct i2c_device_id *id)
	{
	i2c = client;

	max9877_write_regs();

	return 0;
	}

	static __devexit int max9877_i2c_remove(struct i2c_client *client)
	{
	i2c = NULL;

	return 0;
	}

	static const struct i2c_device_id max9877_i2c_id[] = {
	{ "max9877", 0 },
	{ }
	};
	MODULE_DEVICE_TABLE(i2c, max9877_i2c_id);

	static struct i2c_driver max9877_i2c_driver = {
	.driver = {
	.name = "max9877",
	.owner = THIS_MODULE,
	},
	.probe = max9877_i2c_probe,
	.remove = __devexit_p(max9877_i2c_remove),
	.id_table = max9877_i2c_id,
	};

	static int __init max9877_init(void)
	{
	return i2c_add_driver(&max9877_i2c_driver);
	}
	module_init(max9877_init);

	static void __exit max9877_exit(void)
	{
	i2c_del_driver(&max9877_i2c_driver);
	}
	module_exit(max9877_exit);

	MODULE_DESCRIPTION("ASoC MAX9877 amp driver");
	MODULE_AUTHOR("Joonyoung Shim <jy0922.shim@samsung.com>");
	MODULE_LICENSE("GPL");