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linux_dsm_epyc7002/sound/soc/codecs/adau1977.c
Uwe Kleine-König 34d7c3905a ASoC: improve usage of gpiod API 
Since 39b2bbe3d7 (gpio: add flags argument to gpiod_get*() functions)
which appeared in v3.17-rc1, the gpiod_get* functions take an additional
parameter that allows to specify direction and initial value for
output. Simplify drivers accordingly.

Also there is an *_optional variant that serves well here. The sematics
is slightly changed here by using it as error checking is more strict
now: If GPIOLIB is not enabled an error is returned instead of just
ignoring the gpio. On one hand this is bad for devices that don't "have"
the respective gpio as the driver is failing now. On the other hand
there is no means to assert that this gpio is really not needed or if
only the driver to control it is not available. The latter is a real
reason to fail and so it's defensive to fail here, too.

Signed-off-by: Uwe Kleine-König <u.kleine-koenig@pengutronix.de>
Signed-off-by: Mark Brown <broonie@kernel.org>
2015-02-24 17:38:58 +09:00

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/*
* ADAU1977/ADAU1978/ADAU1979 driver
*
* Copyright 2014 Analog Devices Inc.
* Author: Lars-Peter Clausen <lars@metafoo.de>
*
* Licensed under the GPL-2.
*/
#include <linux/delay.h>
#include <linux/device.h>
#include <linux/gpio/consumer.h>
#include <linux/i2c.h>
#include <linux/init.h>
#include <linux/module.h>
#include <linux/platform_data/adau1977.h>
#include <linux/regmap.h>
#include <linux/regulator/consumer.h>
#include <linux/slab.h>
#include <sound/core.h>
#include <sound/initval.h>
#include <sound/pcm.h>
#include <sound/pcm_params.h>
#include <sound/soc.h>
#include <sound/tlv.h>
#include "adau1977.h"
#define ADAU1977_REG_POWER 0x00
#define ADAU1977_REG_PLL 0x01
#define ADAU1977_REG_BOOST 0x02
#define ADAU1977_REG_MICBIAS 0x03
#define ADAU1977_REG_BLOCK_POWER_SAI 0x04
#define ADAU1977_REG_SAI_CTRL0 0x05
#define ADAU1977_REG_SAI_CTRL1 0x06
#define ADAU1977_REG_CMAP12 0x07
#define ADAU1977_REG_CMAP34 0x08
#define ADAU1977_REG_SAI_OVERTEMP 0x09
#define ADAU1977_REG_POST_ADC_GAIN(x) (0x0a + (x))
#define ADAU1977_REG_MISC_CONTROL 0x0e
#define ADAU1977_REG_DIAG_CONTROL 0x10
#define ADAU1977_REG_STATUS(x) (0x11 + (x))
#define ADAU1977_REG_DIAG_IRQ1 0x15
#define ADAU1977_REG_DIAG_IRQ2 0x16
#define ADAU1977_REG_ADJUST1 0x17
#define ADAU1977_REG_ADJUST2 0x18
#define ADAU1977_REG_ADC_CLIP 0x19
#define ADAU1977_REG_DC_HPF_CAL 0x1a
#define ADAU1977_POWER_RESET BIT(7)
#define ADAU1977_POWER_PWUP BIT(0)
#define ADAU1977_PLL_CLK_S BIT(4)
#define ADAU1977_PLL_MCS_MASK 0x7
#define ADAU1977_MICBIAS_MB_VOLTS_MASK 0xf0
#define ADAU1977_MICBIAS_MB_VOLTS_OFFSET 4
#define ADAU1977_BLOCK_POWER_SAI_LR_POL BIT(7)
#define ADAU1977_BLOCK_POWER_SAI_BCLK_EDGE BIT(6)
#define ADAU1977_BLOCK_POWER_SAI_LDO_EN BIT(5)
#define ADAU1977_SAI_CTRL0_FMT_MASK (0x3 << 6)
#define ADAU1977_SAI_CTRL0_FMT_I2S (0x0 << 6)
#define ADAU1977_SAI_CTRL0_FMT_LJ (0x1 << 6)
#define ADAU1977_SAI_CTRL0_FMT_RJ_24BIT (0x2 << 6)
#define ADAU1977_SAI_CTRL0_FMT_RJ_16BIT (0x3 << 6)
#define ADAU1977_SAI_CTRL0_SAI_MASK (0x7 << 3)
#define ADAU1977_SAI_CTRL0_SAI_I2S (0x0 << 3)
#define ADAU1977_SAI_CTRL0_SAI_TDM_2 (0x1 << 3)
#define ADAU1977_SAI_CTRL0_SAI_TDM_4 (0x2 << 3)
#define ADAU1977_SAI_CTRL0_SAI_TDM_8 (0x3 << 3)
#define ADAU1977_SAI_CTRL0_SAI_TDM_16 (0x4 << 3)
#define ADAU1977_SAI_CTRL0_FS_MASK (0x7)
#define ADAU1977_SAI_CTRL0_FS_8000_12000 (0x0)
#define ADAU1977_SAI_CTRL0_FS_16000_24000 (0x1)
#define ADAU1977_SAI_CTRL0_FS_32000_48000 (0x2)
#define ADAU1977_SAI_CTRL0_FS_64000_96000 (0x3)
#define ADAU1977_SAI_CTRL0_FS_128000_192000 (0x4)
#define ADAU1977_SAI_CTRL1_SLOT_WIDTH_MASK (0x3 << 5)
#define ADAU1977_SAI_CTRL1_SLOT_WIDTH_32 (0x0 << 5)
#define ADAU1977_SAI_CTRL1_SLOT_WIDTH_24 (0x1 << 5)
#define ADAU1977_SAI_CTRL1_SLOT_WIDTH_16 (0x2 << 5)
#define ADAU1977_SAI_CTRL1_DATA_WIDTH_MASK (0x1 << 4)
#define ADAU1977_SAI_CTRL1_DATA_WIDTH_16BIT (0x1 << 4)
#define ADAU1977_SAI_CTRL1_DATA_WIDTH_24BIT (0x0 << 4)
#define ADAU1977_SAI_CTRL1_LRCLK_PULSE BIT(3)
#define ADAU1977_SAI_CTRL1_MSB BIT(2)
#define ADAU1977_SAI_CTRL1_BCLKRATE_16 (0x1 << 1)
#define ADAU1977_SAI_CTRL1_BCLKRATE_32 (0x0 << 1)
#define ADAU1977_SAI_CTRL1_BCLKRATE_MASK (0x1 << 1)
#define ADAU1977_SAI_CTRL1_MASTER BIT(0)
#define ADAU1977_SAI_OVERTEMP_DRV_C(x) BIT(4 + (x))
#define ADAU1977_SAI_OVERTEMP_DRV_HIZ BIT(3)
#define ADAU1977_MISC_CONTROL_SUM_MODE_MASK (0x3 << 6)
#define ADAU1977_MISC_CONTROL_SUM_MODE_1CH (0x2 << 6)
#define ADAU1977_MISC_CONTROL_SUM_MODE_2CH (0x1 << 6)
#define ADAU1977_MISC_CONTROL_SUM_MODE_4CH (0x0 << 6)
#define ADAU1977_MISC_CONTROL_MMUTE BIT(4)
#define ADAU1977_MISC_CONTROL_DC_CAL BIT(0)
#define ADAU1977_CHAN_MAP_SECOND_SLOT_OFFSET 4
#define ADAU1977_CHAN_MAP_FIRST_SLOT_OFFSET 0
struct adau1977 {
struct regmap *regmap;
bool right_j;
unsigned int sysclk;
enum adau1977_sysclk_src sysclk_src;
struct gpio_desc *reset_gpio;
enum adau1977_type type;
struct regulator *avdd_reg;
struct regulator *dvdd_reg;
struct snd_pcm_hw_constraint_list constraints;
struct device *dev;
void (*switch_mode)(struct device *dev);
unsigned int max_master_fs;
unsigned int slot_width;
bool enabled;
bool master;
};
static const struct reg_default adau1977_reg_defaults[] = {
{ 0x00, 0x00 },
{ 0x01, 0x41 },
{ 0x02, 0x4a },
{ 0x03, 0x7d },
{ 0x04, 0x3d },
{ 0x05, 0x02 },
{ 0x06, 0x00 },
{ 0x07, 0x10 },
{ 0x08, 0x32 },
{ 0x09, 0xf0 },
{ 0x0a, 0xa0 },
{ 0x0b, 0xa0 },
{ 0x0c, 0xa0 },
{ 0x0d, 0xa0 },
{ 0x0e, 0x02 },
{ 0x10, 0x0f },
{ 0x15, 0x20 },
{ 0x16, 0x00 },
{ 0x17, 0x00 },
{ 0x18, 0x00 },
{ 0x1a, 0x00 },
};
static const DECLARE_TLV_DB_MINMAX_MUTE(adau1977_adc_gain, -3562, 6000);
static const struct snd_soc_dapm_widget adau1977_micbias_dapm_widgets[] = {
SND_SOC_DAPM_SUPPLY("MICBIAS", ADAU1977_REG_MICBIAS,
3, 0, NULL, 0)
};
static const struct snd_soc_dapm_widget adau1977_dapm_widgets[] = {
SND_SOC_DAPM_SUPPLY("Vref", ADAU1977_REG_BLOCK_POWER_SAI,
4, 0, NULL, 0),
SND_SOC_DAPM_ADC("ADC1", "Capture", ADAU1977_REG_BLOCK_POWER_SAI, 0, 0),
SND_SOC_DAPM_ADC("ADC2", "Capture", ADAU1977_REG_BLOCK_POWER_SAI, 1, 0),
SND_SOC_DAPM_ADC("ADC3", "Capture", ADAU1977_REG_BLOCK_POWER_SAI, 2, 0),
SND_SOC_DAPM_ADC("ADC4", "Capture", ADAU1977_REG_BLOCK_POWER_SAI, 3, 0),
SND_SOC_DAPM_INPUT("AIN1"),
SND_SOC_DAPM_INPUT("AIN2"),
SND_SOC_DAPM_INPUT("AIN3"),
SND_SOC_DAPM_INPUT("AIN4"),
SND_SOC_DAPM_OUTPUT("VREF"),
};
static const struct snd_soc_dapm_route adau1977_dapm_routes[] = {
{ "ADC1", NULL, "AIN1" },
{ "ADC2", NULL, "AIN2" },
{ "ADC3", NULL, "AIN3" },
{ "ADC4", NULL, "AIN4" },
{ "ADC1", NULL, "Vref" },
{ "ADC2", NULL, "Vref" },
{ "ADC3", NULL, "Vref" },
{ "ADC4", NULL, "Vref" },
{ "VREF", NULL, "Vref" },
};
#define ADAU1977_VOLUME(x) \
SOC_SINGLE_TLV("ADC" #x " Capture Volume", \
ADAU1977_REG_POST_ADC_GAIN((x) - 1), \
0, 255, 1, adau1977_adc_gain)
#define ADAU1977_HPF_SWITCH(x) \
SOC_SINGLE("ADC" #x " Highpass-Filter Capture Switch", \
ADAU1977_REG_DC_HPF_CAL, (x) - 1, 1, 0)
#define ADAU1977_DC_SUB_SWITCH(x) \
SOC_SINGLE("ADC" #x " DC Substraction Capture Switch", \
ADAU1977_REG_DC_HPF_CAL, (x) + 3, 1, 0)
static const struct snd_kcontrol_new adau1977_snd_controls[] = {
ADAU1977_VOLUME(1),
ADAU1977_VOLUME(2),
ADAU1977_VOLUME(3),
ADAU1977_VOLUME(4),
ADAU1977_HPF_SWITCH(1),
ADAU1977_HPF_SWITCH(2),
ADAU1977_HPF_SWITCH(3),
ADAU1977_HPF_SWITCH(4),
ADAU1977_DC_SUB_SWITCH(1),
ADAU1977_DC_SUB_SWITCH(2),
ADAU1977_DC_SUB_SWITCH(3),
ADAU1977_DC_SUB_SWITCH(4),
};
static int adau1977_reset(struct adau1977 *adau1977)
{
int ret;
/*
* The reset bit is obviously volatile, but we need to be able to cache
* the other bits in the register, so we can't just mark the whole
* register as volatile. Since this is the only place where we'll ever
* touch the reset bit just bypass the cache for this operation.
*/
regcache_cache_bypass(adau1977->regmap, true);
ret = regmap_write(adau1977->regmap, ADAU1977_REG_POWER,
ADAU1977_POWER_RESET);
regcache_cache_bypass(adau1977->regmap, false);
if (ret)
return ret;
return ret;
}
/*
* Returns the appropriate setting for ths FS field in the CTRL0 register
* depending on the rate.
*/
static int adau1977_lookup_fs(unsigned int rate)
{
if (rate >= 8000 && rate <= 12000)
return ADAU1977_SAI_CTRL0_FS_8000_12000;
else if (rate >= 16000 && rate <= 24000)
return ADAU1977_SAI_CTRL0_FS_16000_24000;
else if (rate >= 32000 && rate <= 48000)
return ADAU1977_SAI_CTRL0_FS_32000_48000;
else if (rate >= 64000 && rate <= 96000)
return ADAU1977_SAI_CTRL0_FS_64000_96000;
else if (rate >= 128000 && rate <= 192000)
return ADAU1977_SAI_CTRL0_FS_128000_192000;
else
return -EINVAL;
}
static int adau1977_lookup_mcs(struct adau1977 *adau1977, unsigned int rate,
unsigned int fs)
{
unsigned int mcs;
/*
* rate = sysclk / (512 * mcs_lut[mcs]) * 2**fs
* => mcs_lut[mcs] = sysclk / (512 * rate) * 2**fs
* => mcs_lut[mcs] = sysclk / ((512 / 2**fs) * rate)
*/
rate *= 512 >> fs;
if (adau1977->sysclk % rate != 0)
return -EINVAL;
mcs = adau1977->sysclk / rate;
/* The factors configured by MCS are 1, 2, 3, 4, 6 */
if (mcs < 1 || mcs > 6 || mcs == 5)
return -EINVAL;
mcs = mcs - 1;
if (mcs == 5)
mcs = 4;
return mcs;
}
static int adau1977_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 adau1977 *adau1977 = snd_soc_codec_get_drvdata(codec);
unsigned int rate = params_rate(params);
unsigned int slot_width;
unsigned int ctrl0, ctrl0_mask;
unsigned int ctrl1;
int mcs, fs;
int ret;
fs = adau1977_lookup_fs(rate);
if (fs < 0)
return fs;
if (adau1977->sysclk_src == ADAU1977_SYSCLK_SRC_MCLK) {
mcs = adau1977_lookup_mcs(adau1977, rate, fs);
if (mcs < 0)
return mcs;
} else {
mcs = 0;
}
ctrl0_mask = ADAU1977_SAI_CTRL0_FS_MASK;
ctrl0 = fs;
if (adau1977->right_j) {
switch (params_width(params)) {
case 16:
ctrl0 |= ADAU1977_SAI_CTRL0_FMT_RJ_16BIT;
break;
case 24:
ctrl0 |= ADAU1977_SAI_CTRL0_FMT_RJ_24BIT;
break;
default:
return -EINVAL;
}
ctrl0_mask |= ADAU1977_SAI_CTRL0_FMT_MASK;
}
if (adau1977->master) {
switch (params_width(params)) {
case 16:
ctrl1 = ADAU1977_SAI_CTRL1_DATA_WIDTH_16BIT;
slot_width = 16;
break;
case 24:
case 32:
ctrl1 = ADAU1977_SAI_CTRL1_DATA_WIDTH_24BIT;
slot_width = 32;
break;
default:
return -EINVAL;
}
/* In TDM mode there is a fixed slot width */
if (adau1977->slot_width)
slot_width = adau1977->slot_width;
if (slot_width == 16)
ctrl1 |= ADAU1977_SAI_CTRL1_BCLKRATE_16;
else
ctrl1 |= ADAU1977_SAI_CTRL1_BCLKRATE_32;
ret = regmap_update_bits(adau1977->regmap,
ADAU1977_REG_SAI_CTRL1,
ADAU1977_SAI_CTRL1_DATA_WIDTH_MASK |
ADAU1977_SAI_CTRL1_BCLKRATE_MASK,
ctrl1);
if (ret < 0)
return ret;
}
ret = regmap_update_bits(adau1977->regmap, ADAU1977_REG_SAI_CTRL0,
ctrl0_mask, ctrl0);
if (ret < 0)
return ret;
return regmap_update_bits(adau1977->regmap, ADAU1977_REG_PLL,
ADAU1977_PLL_MCS_MASK, mcs);
}
static int adau1977_power_disable(struct adau1977 *adau1977)
{
int ret = 0;
if (!adau1977->enabled)
return 0;
ret = regmap_update_bits(adau1977->regmap, ADAU1977_REG_POWER,
ADAU1977_POWER_PWUP, 0);
if (ret)
return ret;
regcache_mark_dirty(adau1977->regmap);
if (adau1977->reset_gpio)
gpiod_set_value_cansleep(adau1977->reset_gpio, 0);
regcache_cache_only(adau1977->regmap, true);
regulator_disable(adau1977->avdd_reg);
if (adau1977->dvdd_reg)
regulator_disable(adau1977->dvdd_reg);
adau1977->enabled = false;
return 0;
}
static int adau1977_power_enable(struct adau1977 *adau1977)
{
unsigned int val;
int ret = 0;
if (adau1977->enabled)
return 0;
ret = regulator_enable(adau1977->avdd_reg);
if (ret)
return ret;
if (adau1977->dvdd_reg) {
ret = regulator_enable(adau1977->dvdd_reg);
if (ret)
goto err_disable_avdd;
}
if (adau1977->reset_gpio)
gpiod_set_value_cansleep(adau1977->reset_gpio, 1);
regcache_cache_only(adau1977->regmap, false);
if (adau1977->switch_mode)
adau1977->switch_mode(adau1977->dev);
ret = adau1977_reset(adau1977);
if (ret)
goto err_disable_dvdd;
ret = regmap_update_bits(adau1977->regmap, ADAU1977_REG_POWER,
ADAU1977_POWER_PWUP, ADAU1977_POWER_PWUP);
if (ret)
goto err_disable_dvdd;
ret = regcache_sync(adau1977->regmap);
if (ret)
goto err_disable_dvdd;
/*
* The PLL register is not affected by the software reset. It is
* possible that the value of the register was changed to the
* default value while we were in cache only mode. In this case
* regcache_sync will skip over it and we have to manually sync
* it.
*/
ret = regmap_read(adau1977->regmap, ADAU1977_REG_PLL, &val);
if (ret)
goto err_disable_dvdd;
if (val == 0x41) {
regcache_cache_bypass(adau1977->regmap, true);
ret = regmap_write(adau1977->regmap, ADAU1977_REG_PLL,
0x41);
if (ret)
goto err_disable_dvdd;
regcache_cache_bypass(adau1977->regmap, false);
}
adau1977->enabled = true;
return ret;
err_disable_dvdd:
if (adau1977->dvdd_reg)
regulator_disable(adau1977->dvdd_reg);
err_disable_avdd:
regulator_disable(adau1977->avdd_reg);
return ret;
}
static int adau1977_set_bias_level(struct snd_soc_codec *codec,
enum snd_soc_bias_level level)
{
struct adau1977 *adau1977 = 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 = adau1977_power_enable(adau1977);
break;
case SND_SOC_BIAS_OFF:
ret = adau1977_power_disable(adau1977);
break;
}
if (ret)
return ret;
codec->dapm.bias_level = level;
return 0;
}
static int adau1977_set_tdm_slot(struct snd_soc_dai *dai, unsigned int tx_mask,
unsigned int rx_mask, int slots, int width)
{
struct adau1977 *adau1977 = snd_soc_codec_get_drvdata(dai->codec);
unsigned int ctrl0, ctrl1, drv;
unsigned int slot[4];
unsigned int i;
int ret;
if (slots == 0) {
/* 0 = No fixed slot width */
adau1977->slot_width = 0;
adau1977->max_master_fs = 192000;
return regmap_update_bits(adau1977->regmap,
ADAU1977_REG_SAI_CTRL0, ADAU1977_SAI_CTRL0_SAI_MASK,
ADAU1977_SAI_CTRL0_SAI_I2S);
}
if (rx_mask == 0 || tx_mask != 0)
return -EINVAL;
drv = 0;
for (i = 0; i < 4; i++) {
slot[i] = __ffs(rx_mask);
drv |= ADAU1977_SAI_OVERTEMP_DRV_C(i);
rx_mask &= ~(1 << slot[i]);
if (slot[i] >= slots)
return -EINVAL;
if (rx_mask == 0)
break;
}
if (rx_mask != 0)
return -EINVAL;
switch (width) {
case 16:
ctrl1 = ADAU1977_SAI_CTRL1_SLOT_WIDTH_16;
break;
case 24:
/* We can only generate 16 bit or 32 bit wide slots */
if (adau1977->master)
return -EINVAL;
ctrl1 = ADAU1977_SAI_CTRL1_SLOT_WIDTH_24;
break;
case 32:
ctrl1 = ADAU1977_SAI_CTRL1_SLOT_WIDTH_32;
break;
default:
return -EINVAL;
}
switch (slots) {
case 2:
ctrl0 = ADAU1977_SAI_CTRL0_SAI_TDM_2;
break;
case 4:
ctrl0 = ADAU1977_SAI_CTRL0_SAI_TDM_4;
break;
case 8:
ctrl0 = ADAU1977_SAI_CTRL0_SAI_TDM_8;
break;
case 16:
ctrl0 = ADAU1977_SAI_CTRL0_SAI_TDM_16;
break;
default:
return -EINVAL;
}
ret = regmap_update_bits(adau1977->regmap, ADAU1977_REG_SAI_OVERTEMP,
ADAU1977_SAI_OVERTEMP_DRV_C(0) |
ADAU1977_SAI_OVERTEMP_DRV_C(1) |
ADAU1977_SAI_OVERTEMP_DRV_C(2) |
ADAU1977_SAI_OVERTEMP_DRV_C(3), drv);
if (ret)
return ret;
ret = regmap_write(adau1977->regmap, ADAU1977_REG_CMAP12,
(slot[1] << ADAU1977_CHAN_MAP_SECOND_SLOT_OFFSET) |
(slot[0] << ADAU1977_CHAN_MAP_FIRST_SLOT_OFFSET));
if (ret)
return ret;
ret = regmap_write(adau1977->regmap, ADAU1977_REG_CMAP34,
(slot[3] << ADAU1977_CHAN_MAP_SECOND_SLOT_OFFSET) |
(slot[2] << ADAU1977_CHAN_MAP_FIRST_SLOT_OFFSET));
if (ret)
return ret;
ret = regmap_update_bits(adau1977->regmap, ADAU1977_REG_SAI_CTRL0,
ADAU1977_SAI_CTRL0_SAI_MASK, ctrl0);
if (ret)
return ret;
ret = regmap_update_bits(adau1977->regmap, ADAU1977_REG_SAI_CTRL1,
ADAU1977_SAI_CTRL1_SLOT_WIDTH_MASK, ctrl1);
if (ret)
return ret;
adau1977->slot_width = width;
/* In master mode the maximum bitclock is 24.576 MHz */
adau1977->max_master_fs = min(192000, 24576000 / width / slots);
return 0;
}
static int adau1977_mute(struct snd_soc_dai *dai, int mute, int stream)
{
struct adau1977 *adau1977 = snd_soc_codec_get_drvdata(dai->codec);
unsigned int val;
if (mute)
val = ADAU1977_MISC_CONTROL_MMUTE;
else
val = 0;
return regmap_update_bits(adau1977->regmap, ADAU1977_REG_MISC_CONTROL,
ADAU1977_MISC_CONTROL_MMUTE, val);
}
static int adau1977_set_dai_fmt(struct snd_soc_dai *dai, unsigned int fmt)
{
struct adau1977 *adau1977 = snd_soc_codec_get_drvdata(dai->codec);
unsigned int ctrl0 = 0, ctrl1 = 0, block_power = 0;
bool invert_lrclk;
int ret;
switch (fmt & SND_SOC_DAIFMT_MASTER_MASK) {
case SND_SOC_DAIFMT_CBS_CFS:
adau1977->master = false;
break;
case SND_SOC_DAIFMT_CBM_CFM:
ctrl1 |= ADAU1977_SAI_CTRL1_MASTER;
adau1977->master = true;
break;
default:
return -EINVAL;
}
switch (fmt & SND_SOC_DAIFMT_INV_MASK) {
case SND_SOC_DAIFMT_NB_NF:
invert_lrclk = false;
break;
case SND_SOC_DAIFMT_IB_NF:
block_power |= ADAU1977_BLOCK_POWER_SAI_BCLK_EDGE;
invert_lrclk = false;
break;
case SND_SOC_DAIFMT_NB_IF:
invert_lrclk = true;
break;
case SND_SOC_DAIFMT_IB_IF:
block_power |= ADAU1977_BLOCK_POWER_SAI_BCLK_EDGE;
invert_lrclk = true;
break;
default:
return -EINVAL;
}
adau1977->right_j = false;
switch (fmt & SND_SOC_DAIFMT_FORMAT_MASK) {
case SND_SOC_DAIFMT_I2S:
ctrl0 |= ADAU1977_SAI_CTRL0_FMT_I2S;
break;
case SND_SOC_DAIFMT_LEFT_J:
ctrl0 |= ADAU1977_SAI_CTRL0_FMT_LJ;
invert_lrclk = !invert_lrclk;
break;
case SND_SOC_DAIFMT_RIGHT_J:
ctrl0 |= ADAU1977_SAI_CTRL0_FMT_RJ_24BIT;
adau1977->right_j = true;
invert_lrclk = !invert_lrclk;
break;
case SND_SOC_DAIFMT_DSP_A:
ctrl1 |= ADAU1977_SAI_CTRL1_LRCLK_PULSE;
ctrl0 |= ADAU1977_SAI_CTRL0_FMT_I2S;
invert_lrclk = false;
break;
case SND_SOC_DAIFMT_DSP_B:
ctrl1 |= ADAU1977_SAI_CTRL1_LRCLK_PULSE;
ctrl0 |= ADAU1977_SAI_CTRL0_FMT_LJ;
invert_lrclk = false;
break;
default:
return -EINVAL;
}
if (invert_lrclk)
block_power |= ADAU1977_BLOCK_POWER_SAI_LR_POL;
ret = regmap_update_bits(adau1977->regmap, ADAU1977_REG_BLOCK_POWER_SAI,
ADAU1977_BLOCK_POWER_SAI_LR_POL |
ADAU1977_BLOCK_POWER_SAI_BCLK_EDGE, block_power);
if (ret)
return ret;
ret = regmap_update_bits(adau1977->regmap, ADAU1977_REG_SAI_CTRL0,
ADAU1977_SAI_CTRL0_FMT_MASK,
ctrl0);
if (ret)
return ret;
return regmap_update_bits(adau1977->regmap, ADAU1977_REG_SAI_CTRL1,
ADAU1977_SAI_CTRL1_MASTER | ADAU1977_SAI_CTRL1_LRCLK_PULSE,
ctrl1);
}
static int adau1977_startup(struct snd_pcm_substream *substream,
struct snd_soc_dai *dai)
{
struct adau1977 *adau1977 = snd_soc_codec_get_drvdata(dai->codec);
u64 formats = 0;
if (adau1977->slot_width == 16)
formats = SNDRV_PCM_FMTBIT_S16_LE | SNDRV_PCM_FMTBIT_S16_BE;
else if (adau1977->right_j || adau1977->slot_width == 24)
formats = SNDRV_PCM_FMTBIT_S16_LE | SNDRV_PCM_FMTBIT_S16_BE |
SNDRV_PCM_FMTBIT_S24_LE | SNDRV_PCM_FMTBIT_S24_BE;
snd_pcm_hw_constraint_list(substream->runtime, 0,
SNDRV_PCM_HW_PARAM_RATE, &adau1977->constraints);
if (adau1977->master)
snd_pcm_hw_constraint_minmax(substream->runtime,
SNDRV_PCM_HW_PARAM_RATE, 8000, adau1977->max_master_fs);
if (formats != 0)
snd_pcm_hw_constraint_mask64(substream->runtime,
SNDRV_PCM_HW_PARAM_FORMAT, formats);
return 0;
}
static int adau1977_set_tristate(struct snd_soc_dai *dai, int tristate)
{
struct adau1977 *adau1977 = snd_soc_codec_get_drvdata(dai->codec);
unsigned int val;
if (tristate)
val = ADAU1977_SAI_OVERTEMP_DRV_HIZ;
else
val = 0;
return regmap_update_bits(adau1977->regmap, ADAU1977_REG_SAI_OVERTEMP,
ADAU1977_SAI_OVERTEMP_DRV_HIZ, val);
}
static const struct snd_soc_dai_ops adau1977_dai_ops = {
.startup = adau1977_startup,
.hw_params = adau1977_hw_params,
.mute_stream = adau1977_mute,
.set_fmt = adau1977_set_dai_fmt,
.set_tdm_slot = adau1977_set_tdm_slot,
.set_tristate = adau1977_set_tristate,
};
static struct snd_soc_dai_driver adau1977_dai = {
.name = "adau1977-hifi",
.capture = {
.stream_name = "Capture",
.channels_min = 1,
.channels_max = 4,
.rates = SNDRV_PCM_RATE_KNOT,
.formats = SNDRV_PCM_FMTBIT_S16_LE | SNDRV_PCM_FMTBIT_S24_LE |
SNDRV_PCM_FMTBIT_S32_LE,
.sig_bits = 24,
},
.ops = &adau1977_dai_ops,
};
static const unsigned int adau1977_rates[] = {
8000, 16000, 32000, 64000, 128000,
11025, 22050, 44100, 88200, 172400,
12000, 24000, 48000, 96000, 192000,
};
#define ADAU1977_RATE_CONSTRAINT_MASK_32000 0x001f
#define ADAU1977_RATE_CONSTRAINT_MASK_44100 0x03e0
#define ADAU1977_RATE_CONSTRAINT_MASK_48000 0x7c00
/* All rates >= 32000 */
#define ADAU1977_RATE_CONSTRAINT_MASK_LRCLK 0x739c
static bool adau1977_check_sysclk(unsigned int mclk, unsigned int base_freq)
{
unsigned int mcs;
if (mclk % (base_freq * 128) != 0)
return false;
mcs = mclk / (128 * base_freq);
if (mcs < 1 || mcs > 6 || mcs == 5)
return false;
return true;
}
static int adau1977_set_sysclk(struct snd_soc_codec *codec,
int clk_id, int source, unsigned int freq, int dir)
{
struct adau1977 *adau1977 = snd_soc_codec_get_drvdata(codec);
unsigned int mask = 0;
unsigned int clk_src;
unsigned int ret;
if (dir != SND_SOC_CLOCK_IN)
return -EINVAL;
if (clk_id != ADAU1977_SYSCLK)
return -EINVAL;
switch (source) {
case ADAU1977_SYSCLK_SRC_MCLK:
clk_src = 0;
break;
case ADAU1977_SYSCLK_SRC_LRCLK:
clk_src = ADAU1977_PLL_CLK_S;
break;
default:
return -EINVAL;
}
if (freq != 0 && source == ADAU1977_SYSCLK_SRC_MCLK) {
if (freq < 4000000 || freq > 36864000)
return -EINVAL;
if (adau1977_check_sysclk(freq, 32000))
mask |= ADAU1977_RATE_CONSTRAINT_MASK_32000;
if (adau1977_check_sysclk(freq, 44100))
mask |= ADAU1977_RATE_CONSTRAINT_MASK_44100;
if (adau1977_check_sysclk(freq, 48000))
mask |= ADAU1977_RATE_CONSTRAINT_MASK_48000;
if (mask == 0)
return -EINVAL;
} else if (source == ADAU1977_SYSCLK_SRC_LRCLK) {
mask = ADAU1977_RATE_CONSTRAINT_MASK_LRCLK;
}
ret = regmap_update_bits(adau1977->regmap, ADAU1977_REG_PLL,
ADAU1977_PLL_CLK_S, clk_src);
if (ret)
return ret;
adau1977->constraints.mask = mask;
adau1977->sysclk_src = source;
adau1977->sysclk = freq;
return 0;
}
static int adau1977_codec_probe(struct snd_soc_codec *codec)
{
struct adau1977 *adau1977 = snd_soc_codec_get_drvdata(codec);
int ret;
switch (adau1977->type) {
case ADAU1977:
ret = snd_soc_dapm_new_controls(&codec->dapm,
adau1977_micbias_dapm_widgets,
ARRAY_SIZE(adau1977_micbias_dapm_widgets));
if (ret < 0)
return ret;
break;
default:
break;
}
return 0;
}
static struct snd_soc_codec_driver adau1977_codec_driver = {
.probe = adau1977_codec_probe,
.set_bias_level = adau1977_set_bias_level,
.set_sysclk = adau1977_set_sysclk,
.idle_bias_off = true,
.controls = adau1977_snd_controls,
.num_controls = ARRAY_SIZE(adau1977_snd_controls),
.dapm_widgets = adau1977_dapm_widgets,
.num_dapm_widgets = ARRAY_SIZE(adau1977_dapm_widgets),
.dapm_routes = adau1977_dapm_routes,
.num_dapm_routes = ARRAY_SIZE(adau1977_dapm_routes),
};
static int adau1977_setup_micbias(struct adau1977 *adau1977)
{
struct adau1977_platform_data *pdata = adau1977->dev->platform_data;
unsigned int micbias;
if (pdata) {
micbias = pdata->micbias;
if (micbias > ADAU1977_MICBIAS_9V0)
return -EINVAL;
} else {
micbias = ADAU1977_MICBIAS_8V5;
}
return regmap_update_bits(adau1977->regmap, ADAU1977_REG_MICBIAS,
ADAU1977_MICBIAS_MB_VOLTS_MASK,
micbias << ADAU1977_MICBIAS_MB_VOLTS_OFFSET);
}
int adau1977_probe(struct device *dev, struct regmap *regmap,
enum adau1977_type type, void (*switch_mode)(struct device *dev))
{
unsigned int power_off_mask;
struct adau1977 *adau1977;
int ret;
if (IS_ERR(regmap))
return PTR_ERR(regmap);
adau1977 = devm_kzalloc(dev, sizeof(*adau1977), GFP_KERNEL);
if (adau1977 == NULL)
return -ENOMEM;
adau1977->dev = dev;
adau1977->type = type;
adau1977->regmap = regmap;
adau1977->switch_mode = switch_mode;
adau1977->max_master_fs = 192000;
adau1977->constraints.list = adau1977_rates;
adau1977->constraints.count = ARRAY_SIZE(adau1977_rates);
adau1977->avdd_reg = devm_regulator_get(dev, "AVDD");
if (IS_ERR(adau1977->avdd_reg))
return PTR_ERR(adau1977->avdd_reg);
adau1977->dvdd_reg = devm_regulator_get_optional(dev, "DVDD");
if (IS_ERR(adau1977->dvdd_reg)) {
if (PTR_ERR(adau1977->dvdd_reg) != -ENODEV)
return PTR_ERR(adau1977->dvdd_reg);
adau1977->dvdd_reg = NULL;
}
adau1977->reset_gpio = devm_gpiod_get_optional(dev, "reset",
GPIOD_OUT_LOW);
if (IS_ERR(adau1977->reset_gpio))
return PTR_ERR(adau1977->reset_gpio);
dev_set_drvdata(dev, adau1977);
if (adau1977->reset_gpio)
ndelay(100);
ret = adau1977_power_enable(adau1977);
if (ret)
return ret;
if (type == ADAU1977) {
ret = adau1977_setup_micbias(adau1977);
if (ret)
goto err_poweroff;
}
if (adau1977->dvdd_reg)
power_off_mask = ~0;
else
power_off_mask = (unsigned int)~ADAU1977_BLOCK_POWER_SAI_LDO_EN;
ret = regmap_update_bits(adau1977->regmap, ADAU1977_REG_BLOCK_POWER_SAI,
power_off_mask, 0x00);
if (ret)
goto err_poweroff;
ret = adau1977_power_disable(adau1977);
if (ret)
return ret;
return snd_soc_register_codec(dev, &adau1977_codec_driver,
&adau1977_dai, 1);
err_poweroff:
adau1977_power_disable(adau1977);
return ret;
}
EXPORT_SYMBOL_GPL(adau1977_probe);
static bool adau1977_register_volatile(struct device *dev, unsigned int reg)
{
switch (reg) {
case ADAU1977_REG_STATUS(0):
case ADAU1977_REG_STATUS(1):
case ADAU1977_REG_STATUS(2):
case ADAU1977_REG_STATUS(3):
case ADAU1977_REG_ADC_CLIP:
return true;
}
return false;
}
const struct regmap_config adau1977_regmap_config = {
.max_register = ADAU1977_REG_DC_HPF_CAL,
.volatile_reg = adau1977_register_volatile,
.cache_type = REGCACHE_RBTREE,
.reg_defaults = adau1977_reg_defaults,
.num_reg_defaults = ARRAY_SIZE(adau1977_reg_defaults),
};
EXPORT_SYMBOL_GPL(adau1977_regmap_config);
MODULE_DESCRIPTION("ASoC ADAU1977/ADAU1978/ADAU1979 driver");
MODULE_AUTHOR("Lars-Peter Clausen <lars@metafoo.de>");
MODULE_LICENSE("GPL");
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