ASoC: ssm4567: Add driver for Analog Devices SSM4567 amplifier
Analog Devices SSM4567 is a boost class-D audio amplifier. Signed-off-by: Anatol Pomozov <anatol.pomozov@gmail.com> Acked-by: Lars-Peter Clausen <lars@metafoo.de> Signed-off-by: Mark Brown <broonie@kernel.org>
This commit is contained in:
Anatol Pomozov
zatwierdzone przez
Mark Brown
Mark Brown
rodzic
7d1311b93e
commit
1ee44ce030
345
sound/soc/codecs/ssm4567.c
Normal file
345
sound/soc/codecs/ssm4567.c
Normal file
@@ -0,0 +1,345 @@
|
||||
/*
|
||||
* SSM4567 amplifier audio driver
|
||||
*
|
||||
* Copyright 2014 Google Chromium project.
|
||||
* Author: Anatol Pomozov <anatol@chromium.org>
|
||||
*
|
||||
* Based on code copyright/by:
|
||||
* Copyright 2013 Analog Devices Inc.
|
||||
*
|
||||
* Licensed under the GPL-2.
|
||||
*/
|
||||
|
||||
#include <linux/module.h>
|
||||
#include <linux/init.h>
|
||||
#include <linux/i2c.h>
|
||||
#include <linux/regmap.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>
|
||||
|
||||
#define SSM4567_REG_POWER_CTRL 0x00
|
||||
#define SSM4567_REG_AMP_SNS_CTRL 0x01
|
||||
#define SSM4567_REG_DAC_CTRL 0x02
|
||||
#define SSM4567_REG_DAC_VOLUME 0x03
|
||||
#define SSM4567_REG_SAI_CTRL_1 0x04
|
||||
#define SSM4567_REG_SAI_CTRL_2 0x05
|
||||
#define SSM4567_REG_SAI_PLACEMENT_1 0x06
|
||||
#define SSM4567_REG_SAI_PLACEMENT_2 0x07
|
||||
#define SSM4567_REG_SAI_PLACEMENT_3 0x08
|
||||
#define SSM4567_REG_SAI_PLACEMENT_4 0x09
|
||||
#define SSM4567_REG_SAI_PLACEMENT_5 0x0a
|
||||
#define SSM4567_REG_SAI_PLACEMENT_6 0x0b
|
||||
#define SSM4567_REG_BATTERY_V_OUT 0x0c
|
||||
#define SSM4567_REG_LIMITER_CTRL_1 0x0d
|
||||
#define SSM4567_REG_LIMITER_CTRL_2 0x0e
|
||||
#define SSM4567_REG_LIMITER_CTRL_3 0x0f
|
||||
#define SSM4567_REG_STATUS_1 0x10
|
||||
#define SSM4567_REG_STATUS_2 0x11
|
||||
#define SSM4567_REG_FAULT_CTRL 0x12
|
||||
#define SSM4567_REG_PDM_CTRL 0x13
|
||||
#define SSM4567_REG_MCLK_RATIO 0x14
|
||||
#define SSM4567_REG_BOOST_CTRL_1 0x15
|
||||
#define SSM4567_REG_BOOST_CTRL_2 0x16
|
||||
#define SSM4567_REG_SOFT_RESET 0xff
|
||||
|
||||
/* POWER_CTRL */
|
||||
#define SSM4567_POWER_APWDN_EN BIT(7)
|
||||
#define SSM4567_POWER_BSNS_PWDN BIT(6)
|
||||
#define SSM4567_POWER_VSNS_PWDN BIT(5)
|
||||
#define SSM4567_POWER_ISNS_PWDN BIT(4)
|
||||
#define SSM4567_POWER_BOOST_PWDN BIT(3)
|
||||
#define SSM4567_POWER_AMP_PWDN BIT(2)
|
||||
#define SSM4567_POWER_VBAT_ONLY BIT(1)
|
||||
#define SSM4567_POWER_SPWDN BIT(0)
|
||||
|
||||
/* DAC_CTRL */
|
||||
#define SSM4567_DAC_HV BIT(7)
|
||||
#define SSM4567_DAC_MUTE BIT(6)
|
||||
#define SSM4567_DAC_HPF BIT(5)
|
||||
#define SSM4567_DAC_LPM BIT(4)
|
||||
#define SSM4567_DAC_FS_MASK 0x7
|
||||
#define SSM4567_DAC_FS_8000_12000 0x0
|
||||
#define SSM4567_DAC_FS_16000_24000 0x1
|
||||
#define SSM4567_DAC_FS_32000_48000 0x2
|
||||
#define SSM4567_DAC_FS_64000_96000 0x3
|
||||
#define SSM4567_DAC_FS_128000_192000 0x4
|
||||
|
||||
struct ssm4567 {
|
||||
struct regmap *regmap;
|
||||
};
|
||||
|
||||
static const struct reg_default ssm4567_reg_defaults[] = {
|
||||
{ SSM4567_REG_POWER_CTRL, 0x81 },
|
||||
{ SSM4567_REG_AMP_SNS_CTRL, 0x09 },
|
||||
{ SSM4567_REG_DAC_CTRL, 0x32 },
|
||||
{ SSM4567_REG_DAC_VOLUME, 0x40 },
|
||||
{ SSM4567_REG_SAI_CTRL_1, 0x00 },
|
||||
{ SSM4567_REG_SAI_CTRL_2, 0x08 },
|
||||
{ SSM4567_REG_SAI_PLACEMENT_1, 0x01 },
|
||||
{ SSM4567_REG_SAI_PLACEMENT_2, 0x20 },
|
||||
{ SSM4567_REG_SAI_PLACEMENT_3, 0x32 },
|
||||
{ SSM4567_REG_SAI_PLACEMENT_4, 0x07 },
|
||||
{ SSM4567_REG_SAI_PLACEMENT_5, 0x07 },
|
||||
{ SSM4567_REG_SAI_PLACEMENT_6, 0x07 },
|
||||
{ SSM4567_REG_BATTERY_V_OUT, 0x00 },
|
||||
{ SSM4567_REG_LIMITER_CTRL_1, 0xa4 },
|
||||
{ SSM4567_REG_LIMITER_CTRL_2, 0x73 },
|
||||
{ SSM4567_REG_LIMITER_CTRL_3, 0x00 },
|
||||
{ SSM4567_REG_STATUS_1, 0x00 },
|
||||
{ SSM4567_REG_STATUS_2, 0x00 },
|
||||
{ SSM4567_REG_FAULT_CTRL, 0x30 },
|
||||
{ SSM4567_REG_PDM_CTRL, 0x40 },
|
||||
{ SSM4567_REG_MCLK_RATIO, 0x11 },
|
||||
{ SSM4567_REG_BOOST_CTRL_1, 0x03 },
|
||||
{ SSM4567_REG_BOOST_CTRL_2, 0x00 },
|
||||
{ SSM4567_REG_SOFT_RESET, 0x00 },
|
||||
};
|
||||
|
||||
|
||||
static bool ssm4567_readable_reg(struct device *dev, unsigned int reg)
|
||||
{
|
||||
switch (reg) {
|
||||
case SSM4567_REG_POWER_CTRL ... SSM4567_REG_BOOST_CTRL_2:
|
||||
return true;
|
||||
default:
|
||||
return false;
|
||||
}
|
||||
|
||||
}
|
||||
|
||||
static bool ssm4567_writeable_reg(struct device *dev, unsigned int reg)
|
||||
{
|
||||
switch (reg) {
|
||||
case SSM4567_REG_POWER_CTRL ... SSM4567_REG_SAI_PLACEMENT_6:
|
||||
case SSM4567_REG_LIMITER_CTRL_1 ... SSM4567_REG_LIMITER_CTRL_3:
|
||||
case SSM4567_REG_FAULT_CTRL ... SSM4567_REG_BOOST_CTRL_2:
|
||||
/* The datasheet states that soft reset register is read-only,
|
||||
* but logically it is write-only. */
|
||||
case SSM4567_REG_SOFT_RESET:
|
||||
return true;
|
||||
default:
|
||||
return false;
|
||||
}
|
||||
}
|
||||
|
||||
static bool ssm4567_volatile_reg(struct device *dev, unsigned int reg)
|
||||
{
|
||||
switch (reg) {
|
||||
case SSM4567_REG_BATTERY_V_OUT:
|
||||
case SSM4567_REG_STATUS_1 ... SSM4567_REG_STATUS_2:
|
||||
case SSM4567_REG_SOFT_RESET:
|
||||
return true;
|
||||
default:
|
||||
return false;
|
||||
}
|
||||
}
|
||||
|
||||
static const DECLARE_TLV_DB_MINMAX_MUTE(ssm4567_vol_tlv, -7125, 2400);
|
||||
|
||||
static const struct snd_kcontrol_new ssm4567_snd_controls[] = {
|
||||
SOC_SINGLE_TLV("Master Playback Volume", SSM4567_REG_DAC_VOLUME, 0,
|
||||
0xff, 1, ssm4567_vol_tlv),
|
||||
SOC_SINGLE("DAC Low Power Mode Switch", SSM4567_REG_DAC_CTRL, 4, 1, 0),
|
||||
};
|
||||
|
||||
static const struct snd_soc_dapm_widget ssm4567_dapm_widgets[] = {
|
||||
SND_SOC_DAPM_DAC("DAC", "HiFi Playback", SSM4567_REG_POWER_CTRL, 2, 1),
|
||||
|
||||
SND_SOC_DAPM_OUTPUT("OUT"),
|
||||
};
|
||||
|
||||
static const struct snd_soc_dapm_route ssm4567_routes[] = {
|
||||
{ "OUT", NULL, "DAC" },
|
||||
};
|
||||
|
||||
static int ssm4567_hw_params(struct snd_pcm_substream *substream,
|
||||
struct snd_pcm_hw_params *params, struct snd_soc_dai *dai)
|
||||
{
|
||||
struct snd_soc_codec *codec = dai->codec;
|
||||
struct ssm4567 *ssm4567 = snd_soc_codec_get_drvdata(codec);
|
||||
unsigned int rate = params_rate(params);
|
||||
unsigned int dacfs;
|
||||
|
||||
if (rate >= 8000 && rate <= 12000)
|
||||
dacfs = SSM4567_DAC_FS_8000_12000;
|
||||
else if (rate >= 16000 && rate <= 24000)
|
||||
dacfs = SSM4567_DAC_FS_16000_24000;
|
||||
else if (rate >= 32000 && rate <= 48000)
|
||||
dacfs = SSM4567_DAC_FS_32000_48000;
|
||||
else if (rate >= 64000 && rate <= 96000)
|
||||
dacfs = SSM4567_DAC_FS_64000_96000;
|
||||
else if (rate >= 64000 && rate <= 96000)
|
||||
dacfs = SSM4567_DAC_FS_64000_96000;
|
||||
else if (rate >= 128000 && rate <= 192000)
|
||||
dacfs = SSM4567_DAC_FS_128000_192000;
|
||||
else
|
||||
return -EINVAL;
|
||||
|
||||
return regmap_update_bits(ssm4567->regmap, SSM4567_REG_DAC_CTRL,
|
||||
SSM4567_DAC_FS_MASK, dacfs);
|
||||
}
|
||||
|
||||
static int ssm4567_mute(struct snd_soc_dai *dai, int mute)
|
||||
{
|
||||
struct ssm4567 *ssm4567 = snd_soc_codec_get_drvdata(dai->codec);
|
||||
unsigned int val;
|
||||
|
||||
val = mute ? SSM4567_DAC_MUTE : 0;
|
||||
return regmap_update_bits(ssm4567->regmap, SSM4567_REG_DAC_CTRL,
|
||||
SSM4567_DAC_MUTE, val);
|
||||
}
|
||||
|
||||
static int ssm4567_set_power(struct ssm4567 *ssm4567, bool enable)
|
||||
{
|
||||
int ret = 0;
|
||||
|
||||
if (!enable) {
|
||||
ret = regmap_update_bits(ssm4567->regmap,
|
||||
SSM4567_REG_POWER_CTRL,
|
||||
SSM4567_POWER_SPWDN, SSM4567_POWER_SPWDN);
|
||||
regcache_mark_dirty(ssm4567->regmap);
|
||||
}
|
||||
|
||||
regcache_cache_only(ssm4567->regmap, !enable);
|
||||
|
||||
if (enable) {
|
||||
ret = regmap_update_bits(ssm4567->regmap,
|
||||
SSM4567_REG_POWER_CTRL,
|
||||
SSM4567_POWER_SPWDN, 0x00);
|
||||
regcache_sync(ssm4567->regmap);
|
||||
}
|
||||
|
||||
return ret;
|
||||
}
|
||||
|
||||
static int ssm4567_set_bias_level(struct snd_soc_codec *codec,
|
||||
enum snd_soc_bias_level level)
|
||||
{
|
||||
struct ssm4567 *ssm4567 = snd_soc_codec_get_drvdata(codec);
|
||||
int ret = 0;
|
||||
|
||||
switch (level) {
|
||||
case SND_SOC_BIAS_ON:
|
||||
break;
|
||||
case SND_SOC_BIAS_PREPARE:
|
||||
break;
|
||||
case SND_SOC_BIAS_STANDBY:
|
||||
if (codec->dapm.bias_level == SND_SOC_BIAS_OFF)
|
||||
ret = ssm4567_set_power(ssm4567, true);
|
||||
break;
|
||||
case SND_SOC_BIAS_OFF:
|
||||
ret = ssm4567_set_power(ssm4567, false);
|
||||
break;
|
||||
}
|
||||
|
||||
if (ret)
|
||||
return ret;
|
||||
|
||||
codec->dapm.bias_level = level;
|
||||
|
||||
return 0;
|
||||
}
|
||||
|
||||
static const struct snd_soc_dai_ops ssm4567_dai_ops = {
|
||||
.hw_params = ssm4567_hw_params,
|
||||
.digital_mute = ssm4567_mute,
|
||||
};
|
||||
|
||||
static struct snd_soc_dai_driver ssm4567_dai = {
|
||||
.name = "ssm4567-hifi",
|
||||
.playback = {
|
||||
.stream_name = "Playback",
|
||||
.channels_min = 1,
|
||||
.channels_max = 1,
|
||||
.rates = SNDRV_PCM_RATE_8000_192000,
|
||||
.formats = SNDRV_PCM_FMTBIT_S16_LE | SNDRV_PCM_FMTBIT_S24_LE |
|
||||
SNDRV_PCM_FMTBIT_S32,
|
||||
},
|
||||
.ops = &ssm4567_dai_ops,
|
||||
};
|
||||
|
||||
static struct snd_soc_codec_driver ssm4567_codec_driver = {
|
||||
.set_bias_level = ssm4567_set_bias_level,
|
||||
.idle_bias_off = true,
|
||||
|
||||
.controls = ssm4567_snd_controls,
|
||||
.num_controls = ARRAY_SIZE(ssm4567_snd_controls),
|
||||
.dapm_widgets = ssm4567_dapm_widgets,
|
||||
.num_dapm_widgets = ARRAY_SIZE(ssm4567_dapm_widgets),
|
||||
.dapm_routes = ssm4567_routes,
|
||||
.num_dapm_routes = ARRAY_SIZE(ssm4567_routes),
|
||||
};
|
||||
|
||||
static const struct regmap_config ssm4567_regmap_config = {
|
||||
.val_bits = 8,
|
||||
.reg_bits = 8,
|
||||
|
||||
.max_register = SSM4567_REG_SOFT_RESET,
|
||||
.readable_reg = ssm4567_readable_reg,
|
||||
.writeable_reg = ssm4567_writeable_reg,
|
||||
.volatile_reg = ssm4567_volatile_reg,
|
||||
|
||||
.cache_type = REGCACHE_RBTREE,
|
||||
.reg_defaults = ssm4567_reg_defaults,
|
||||
.num_reg_defaults = ARRAY_SIZE(ssm4567_reg_defaults),
|
||||
};
|
||||
|
||||
static int ssm4567_i2c_probe(struct i2c_client *i2c,
|
||||
const struct i2c_device_id *id)
|
||||
{
|
||||
struct ssm4567 *ssm4567;
|
||||
int ret;
|
||||
|
||||
ssm4567 = devm_kzalloc(&i2c->dev, sizeof(*ssm4567), GFP_KERNEL);
|
||||
if (ssm4567 == NULL)
|
||||
return -ENOMEM;
|
||||
|
||||
i2c_set_clientdata(i2c, ssm4567);
|
||||
|
||||
ssm4567->regmap = devm_regmap_init_i2c(i2c, &ssm4567_regmap_config);
|
||||
if (IS_ERR(ssm4567->regmap))
|
||||
return PTR_ERR(ssm4567->regmap);
|
||||
|
||||
ret = regmap_write(ssm4567->regmap, SSM4567_REG_SOFT_RESET, 0x00);
|
||||
if (ret)
|
||||
return ret;
|
||||
|
||||
ret = ssm4567_set_power(ssm4567, false);
|
||||
if (ret)
|
||||
return ret;
|
||||
|
||||
return snd_soc_register_codec(&i2c->dev, &ssm4567_codec_driver,
|
||||
&ssm4567_dai, 1);
|
||||
}
|
||||
|
||||
static int ssm4567_i2c_remove(struct i2c_client *client)
|
||||
{
|
||||
snd_soc_unregister_codec(&client->dev);
|
||||
return 0;
|
||||
}
|
||||
|
||||
static const struct i2c_device_id ssm4567_i2c_ids[] = {
|
||||
{ "ssm4567", 0 },
|
||||
{ }
|
||||
};
|
||||
MODULE_DEVICE_TABLE(i2c, ssm4567_i2c_ids);
|
||||
|
||||
static struct i2c_driver ssm4567_driver = {
|
||||
.driver = {
|
||||
.name = "ssm4567",
|
||||
.owner = THIS_MODULE,
|
||||
},
|
||||
.probe = ssm4567_i2c_probe,
|
||||
.remove = ssm4567_i2c_remove,
|
||||
.id_table = ssm4567_i2c_ids,
|
||||
};
|
||||
module_i2c_driver(ssm4567_driver);
|
||||
|
||||
MODULE_DESCRIPTION("ASoC SSM4567 driver");
|
||||
MODULE_AUTHOR("Anatol Pomozov <anatol@chromium.org>");
|
||||
MODULE_LICENSE("GPL");
|
||||
Reference in New Issue
Block a user