309 lines
8.0 KiB
C
309 lines
8.0 KiB
C
/*
|
|
* 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");
|