ASoC: MAX9877: add MAX9877 amp driver
The MAX9877 combines a high-efficiency Class D audio power amplifier with a stereo Class AB capacitor-less DirectDrive headphone amplifier. The max9877_add_controls() is called to register the MAX9877 specific controls on machine specific init() of the machine driver. The datasheet for the MAX9877 can find at the following url: http://datasheets.maxim-ic.com/en/ds/MAX9877.pdf [Slight edit to sort the ALL_CODECS entries -- broonie.] Signed-off-by: Joonyoung Shim <jy0922.shim@samsung.com> Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
This commit is contained in:
Joonyoung Shim
Mark Brown
parent
3ce91d5a5a
commit
9db9ed977d
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@ -17,6 +17,7 @@ config SND_SOC_ALL_CODECS
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select SND_SOC_AK4104 if SPI_MASTER
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select SND_SOC_AK4535 if I2C
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select SND_SOC_CS4270 if I2C
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select SND_SOC_MAX9877 if I2C
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select SND_SOC_PCM3008
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select SND_SOC_SPDIF
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select SND_SOC_SSM2602 if I2C
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@ -188,3 +189,7 @@ config SND_SOC_WM9712
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config SND_SOC_WM9713
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tristate
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# Amp
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config SND_SOC_MAX9877
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tristate
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@ -38,6 +38,9 @@ snd-soc-wm9705-objs := wm9705.o
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snd-soc-wm9712-objs := wm9712.o
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snd-soc-wm9713-objs := wm9713.o
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# Amp
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snd-soc-max9877-objs := max9877.o
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obj-$(CONFIG_SND_SOC_AC97_CODEC) += snd-soc-ac97.o
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obj-$(CONFIG_SND_SOC_AD1980) += snd-soc-ad1980.o
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obj-$(CONFIG_SND_SOC_AD73311) += snd-soc-ad73311.o
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@ -77,3 +80,6 @@ obj-$(CONFIG_SND_SOC_WM9081) += snd-soc-wm9081.o
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obj-$(CONFIG_SND_SOC_WM9705) += snd-soc-wm9705.o
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obj-$(CONFIG_SND_SOC_WM9712) += snd-soc-wm9712.o
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obj-$(CONFIG_SND_SOC_WM9713) += snd-soc-wm9713.o
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# Amp
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obj-$(CONFIG_SND_SOC_MAX9877) += snd-soc-max9877.o
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@ -0,0 +1,270 @@
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/*
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* max9877.c -- amp driver for max9877
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*
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* Copyright (C) 2009 Samsung Electronics Co.Ltd
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* Author: Joonyoung Shim <jy0922.shim@samsung.com>
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*
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* This program is free software; you can redistribute it and/or modify it
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* under the terms of the GNU General Public License as published by the
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* Free Software Foundation; either version 2 of the License, or (at your
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* option) any later version.
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*
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*/
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#include <linux/module.h>
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#include <linux/init.h>
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#include <linux/i2c.h>
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#include <sound/soc.h>
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#include <sound/tlv.h>
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#include "max9877.h"
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static struct i2c_client *i2c;
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static u8 max9877_regs[5] = { 0x40, 0x00, 0x00, 0x00, 0x49 };
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static void max9877_write_regs(void)
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{
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if (i2c_master_send(i2c, max9877_regs, 5) != 5)
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dev_err(&i2c->dev, "i2c write failed\n");
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}
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static int max9877_get_reg(struct snd_kcontrol *kcontrol,
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struct snd_ctl_elem_value *ucontrol)
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{
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struct soc_mixer_control *mc =
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(struct soc_mixer_control *)kcontrol->private_value;
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int reg = mc->reg;
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int reg2 = mc->rreg;
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int shift = mc->shift;
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int mask = mc->max;
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ucontrol->value.integer.value[0] = (max9877_regs[reg] >> shift) & mask;
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if (reg2)
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ucontrol->value.integer.value[1] =
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(max9877_regs[reg2] >> shift) & mask;
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return 0;
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}
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static int max9877_set_reg(struct snd_kcontrol *kcontrol,
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struct snd_ctl_elem_value *ucontrol)
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{
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struct soc_mixer_control *mc =
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(struct soc_mixer_control *)kcontrol->private_value;
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int reg = mc->reg;
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int reg2 = mc->rreg;
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int shift = mc->shift;
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int mask = mc->max;
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int change = 1;
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int change2 = 1;
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int ret = 0;
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if (((max9877_regs[reg] >> shift) & mask) ==
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ucontrol->value.integer.value[0])
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change = 0;
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if (reg2)
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if (((max9877_regs[reg2] >> shift) & mask) ==
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ucontrol->value.integer.value[1])
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change2 = 0;
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if (change) {
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max9877_regs[reg] &= ~(mask << shift);
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max9877_regs[reg] |= ucontrol->value.integer.value[0] << shift;
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ret = change;
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}
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if (reg2 && change2) {
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max9877_regs[reg2] &= ~(mask << shift);
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max9877_regs[reg2] |= ucontrol->value.integer.value[1] << shift;
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ret = change2;
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}
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if (ret)
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max9877_write_regs();
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return ret;
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}
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static int max9877_get_out_mode(struct snd_kcontrol *kcontrol,
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struct snd_ctl_elem_value *ucontrol)
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{
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u8 value = max9877_regs[MAX9877_OUTPUT_MODE] & MAX9877_OUTMODE_MASK;
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if (value)
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value -= 1;
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ucontrol->value.integer.value[0] = value;
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return 0;
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}
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static int max9877_set_out_mode(struct snd_kcontrol *kcontrol,
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struct snd_ctl_elem_value *ucontrol)
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{
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u8 value = ucontrol->value.integer.value[0];
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if (value)
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value += 1;
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if ((max9877_regs[MAX9877_OUTPUT_MODE] & MAX9877_OUTMODE_MASK) == value)
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return 0;
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max9877_regs[MAX9877_OUTPUT_MODE] |= value;
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max9877_write_regs();
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return 1;
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}
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static int max9877_get_osc_mode(struct snd_kcontrol *kcontrol,
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struct snd_ctl_elem_value *ucontrol)
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{
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u8 value = (max9877_regs[MAX9877_OUTPUT_MODE] & MAX9877_OSC_MASK);
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value = value >> MAX9877_OSC_OFFSET;
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ucontrol->value.integer.value[0] = value;
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return 0;
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}
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static int max9877_set_osc_mode(struct snd_kcontrol *kcontrol,
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struct snd_ctl_elem_value *ucontrol)
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{
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u8 value = ucontrol->value.integer.value[0];
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value = value << MAX9877_OSC_OFFSET;
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if ((max9877_regs[MAX9877_OUTPUT_MODE] & MAX9877_OSC_MASK) == value)
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return 0;
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max9877_regs[MAX9877_OUTPUT_MODE] |= value;
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max9877_write_regs();
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return 1;
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}
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static const unsigned int max9877_pgain_tlv[] = {
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TLV_DB_RANGE_HEAD(2),
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0, 1, TLV_DB_SCALE_ITEM(0, 900, 0),
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2, 2, TLV_DB_SCALE_ITEM(2000, 0, 0),
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};
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static const unsigned int max9877_output_tlv[] = {
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TLV_DB_RANGE_HEAD(4),
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0, 7, TLV_DB_SCALE_ITEM(-7900, 400, 1),
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8, 15, TLV_DB_SCALE_ITEM(-4700, 300, 0),
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16, 23, TLV_DB_SCALE_ITEM(-2300, 200, 0),
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24, 31, TLV_DB_SCALE_ITEM(-700, 100, 0),
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};
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static const char *max9877_out_mode[] = {
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"INA -> SPK",
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"INA -> HP",
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"INA -> SPK and HP",
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"INB -> SPK",
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"INB -> HP",
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"INB -> SPK and HP",
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"INA + INB -> SPK",
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"INA + INB -> HP",
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"INA + INB -> SPK and HP",
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};
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static const char *max9877_osc_mode[] = {
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"1176KHz",
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"1100KHz",
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"700KHz",
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};
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static const struct soc_enum max9877_enum[] = {
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SOC_ENUM_SINGLE_EXT(ARRAY_SIZE(max9877_out_mode), max9877_out_mode),
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SOC_ENUM_SINGLE_EXT(ARRAY_SIZE(max9877_osc_mode), max9877_osc_mode),
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};
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static const struct snd_kcontrol_new max9877_controls[] = {
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SOC_SINGLE_EXT_TLV("MAX9877 PGAINA Playback Volume",
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MAX9877_INPUT_MODE, 0, 2, 0,
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max9877_get_reg, max9877_set_reg, max9877_pgain_tlv),
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SOC_SINGLE_EXT_TLV("MAX9877 PGAINB Playback Volume",
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MAX9877_INPUT_MODE, 2, 2, 0,
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max9877_get_reg, max9877_set_reg, max9877_pgain_tlv),
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SOC_SINGLE_EXT_TLV("MAX9877 Amp Speaker Playback Volume",
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MAX9877_SPK_VOLUME, 0, 31, 0,
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max9877_get_reg, max9877_set_reg, max9877_output_tlv),
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SOC_DOUBLE_R_EXT_TLV("MAX9877 Amp HP Playback Volume",
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MAX9877_HPL_VOLUME, MAX9877_HPR_VOLUME, 0, 31, 0,
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max9877_get_reg, max9877_set_reg, max9877_output_tlv),
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SOC_SINGLE_EXT("MAX9877 INB Stereo Switch",
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MAX9877_INPUT_MODE, 4, 1, 1,
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max9877_get_reg, max9877_set_reg),
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SOC_SINGLE_EXT("MAX9877 INA Stereo Switch",
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MAX9877_INPUT_MODE, 5, 1, 1,
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max9877_get_reg, max9877_set_reg),
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SOC_SINGLE_EXT("MAX9877 Zero-crossing detection Switch",
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MAX9877_INPUT_MODE, 6, 1, 0,
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max9877_get_reg, max9877_set_reg),
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SOC_SINGLE_EXT("MAX9877 Bypass Mode Switch",
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MAX9877_OUTPUT_MODE, 6, 1, 0,
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max9877_get_reg, max9877_set_reg),
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SOC_SINGLE_EXT("MAX9877 Shutdown Mode Switch",
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MAX9877_OUTPUT_MODE, 7, 1, 1,
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max9877_get_reg, max9877_set_reg),
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SOC_ENUM_EXT("MAX9877 Output Mode", max9877_enum[0],
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max9877_get_out_mode, max9877_set_out_mode),
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SOC_ENUM_EXT("MAX9877 Oscillator Mode", max9877_enum[1],
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max9877_get_osc_mode, max9877_set_osc_mode),
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};
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/* This function is called from ASoC machine driver */
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int max9877_add_controls(struct snd_soc_codec *codec)
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{
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return snd_soc_add_controls(codec, max9877_controls,
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ARRAY_SIZE(max9877_controls));
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}
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EXPORT_SYMBOL_GPL(max9877_add_controls);
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static int __devinit max9877_i2c_probe(struct i2c_client *client,
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const struct i2c_device_id *id)
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{
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i2c = client;
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max9877_write_regs();
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return 0;
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}
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static __devexit int max9877_i2c_remove(struct i2c_client *client)
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{
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i2c = NULL;
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return 0;
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}
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static const struct i2c_device_id max9877_i2c_id[] = {
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{ "max9877", 0 },
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{ }
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};
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MODULE_DEVICE_TABLE(i2c, max9877_i2c_id);
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static struct i2c_driver max9877_i2c_driver = {
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.driver = {
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.name = "max9877",
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.owner = THIS_MODULE,
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},
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.probe = max9877_i2c_probe,
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.remove = __devexit_p(max9877_i2c_remove),
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.id_table = max9877_i2c_id,
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};
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static int __init max9877_init(void)
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{
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return i2c_add_driver(&max9877_i2c_driver);
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}
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module_init(max9877_init);
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static void __exit max9877_exit(void)
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{
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i2c_del_driver(&max9877_i2c_driver);
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}
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module_exit(max9877_exit);
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MODULE_DESCRIPTION("ASoC MAX9877 amp driver");
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MODULE_AUTHOR("Joonyoung Shim <jy0922.shim@samsung.com>");
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MODULE_LICENSE("GPL");
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@ -0,0 +1,37 @@
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/*
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* max9877.h -- amp driver for max9877
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*
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* Copyright (C) 2009 Samsung Electronics Co.Ltd
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* Author: Joonyoung Shim <jy0922.shim@samsung.com>
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*
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* This program is free software; you can redistribute it and/or modify it
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* under the terms of the GNU General Public License as published by the
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* Free Software Foundation; either version 2 of the License, or (at your
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* option) any later version.
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*
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*/
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#ifndef _MAX9877_H
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#define _MAX9877_H
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#define MAX9877_INPUT_MODE 0x00
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#define MAX9877_SPK_VOLUME 0x01
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#define MAX9877_HPL_VOLUME 0x02
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#define MAX9877_HPR_VOLUME 0x03
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#define MAX9877_OUTPUT_MODE 0x04
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/* MAX9877_INPUT_MODE */
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#define MAX9877_INB (1 << 4)
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#define MAX9877_INA (1 << 5)
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#define MAX9877_ZCD (1 << 6)
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/* MAX9877_OUTPUT_MODE */
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#define MAX9877_OUTMODE_MASK (15 << 0)
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#define MAX9877_OSC_MASK (3 << 4)
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#define MAX9877_OSC_OFFSET 4
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#define MAX9877_BYPASS (1 << 6)
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#define MAX9877_SHDN (1 << 7)
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extern int max9877_add_controls(struct snd_soc_codec *codec);
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#endif
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