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993a345071
linux/sound/soc/codecs/pcm186x.c
Andreas Dannenberg 993a345071
ASoC: pcm186x: Add initial PCM1862/63/64/65 universal ADC driver 
This is an initial version of the PCM186x codec driver supporting both
2-channel and 4-channel device variants. Not all device features are
supported yet such as master/slave mode PLL configuration for which the
codec driver currently relies on the PCM186x built-in clock
auto-detection feature or the connection of digital microphones.
However here is what's here and what should work:

- Support for SPI and I2C low-level interfaces
- Regmap support and basic register definitions
- Input Mixer and Mux selection
- I2C, LJ, and TDM DAI format support

Signed-off-by: Andreas Dannenberg <dannenberg@ti.com>
Signed-off-by: Michael Stecklein <m-stecklein@ti.com>
Signed-off-by: Andrew F. Davis <afd@ti.com>
Signed-off-by: Mark Brown <broonie@kernel.org>
2017-12-06 13:06:04 +00:00

720 lines
20 KiB
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Raw Blame History

// SPDX-License-Identifier: GPL-2.0
/*
* Texas Instruments PCM186x Universal Audio ADC
*
* Copyright (C) 2015-2017 Texas Instruments Incorporated - http://www.ti.com
* Andreas Dannenberg <dannenberg@ti.com>
* Andrew F. Davis <afd@ti.com>
*/
#include <linux/module.h>
#include <linux/moduleparam.h>
#include <linux/init.h>
#include <linux/delay.h>
#include <linux/pm.h>
#include <linux/pm_runtime.h>
#include <linux/regulator/consumer.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/jack.h>
#include <sound/initval.h>
#include <sound/tlv.h>
#include "pcm186x.h"
static const char * const pcm186x_supply_names[] = {
"avdd", /* Analog power supply. Connect to 3.3-V supply. */
"dvdd", /* Digital power supply. Connect to 3.3-V supply. */
"iovdd", /* I/O power supply. Connect to 3.3-V or 1.8-V. */
};
#define PCM186x_NUM_SUPPLIES ARRAY_SIZE(pcm186x_supply_names)
struct pcm186x_priv {
struct regmap *regmap;
struct regulator_bulk_data supplies[PCM186x_NUM_SUPPLIES];
unsigned int sysclk;
unsigned int tdm_offset;
bool is_tdm_mode;
bool is_master_mode;
};
static const DECLARE_TLV_DB_SCALE(pcm186x_pga_tlv, -1200, 4000, 50);
static const struct snd_kcontrol_new pcm1863_snd_controls[] = {
SOC_DOUBLE_R_S_TLV("ADC Capture Volume", PCM186X_PGA_VAL_CH1_L,
PCM186X_PGA_VAL_CH1_R, 0, -24, 80, 7, 0,
pcm186x_pga_tlv),
};
static const struct snd_kcontrol_new pcm1865_snd_controls[] = {
SOC_DOUBLE_R_S_TLV("ADC1 Capture Volume", PCM186X_PGA_VAL_CH1_L,
PCM186X_PGA_VAL_CH1_R, 0, -24, 80, 7, 0,
pcm186x_pga_tlv),
SOC_DOUBLE_R_S_TLV("ADC2 Capture Volume", PCM186X_PGA_VAL_CH2_L,
PCM186X_PGA_VAL_CH2_R, 0, -24, 80, 7, 0,
pcm186x_pga_tlv),
};
const unsigned int pcm186x_adc_input_channel_sel_value[] = {
0x00, 0x01, 0x02, 0x03, 0x04, 0x05, 0x06, 0x07,
0x08, 0x09, 0x0a, 0x0b, 0x0c, 0x0d, 0x0e, 0x0f,
0x10, 0x20, 0x30
};
static const char * const pcm186x_adcl_input_channel_sel_text[] = {
"No Select",
"VINL1[SE]", /* Default for ADC1L */
"VINL2[SE]", /* Default for ADC2L */
"VINL2[SE] + VINL1[SE]",
"VINL3[SE]",
"VINL3[SE] + VINL1[SE]",
"VINL3[SE] + VINL2[SE]",
"VINL3[SE] + VINL2[SE] + VINL1[SE]",
"VINL4[SE]",
"VINL4[SE] + VINL1[SE]",
"VINL4[SE] + VINL2[SE]",
"VINL4[SE] + VINL2[SE] + VINL1[SE]",
"VINL4[SE] + VINL3[SE]",
"VINL4[SE] + VINL3[SE] + VINL1[SE]",
"VINL4[SE] + VINL3[SE] + VINL2[SE]",
"VINL4[SE] + VINL3[SE] + VINL2[SE] + VINL1[SE]",
"{VIN1P, VIN1M}[DIFF]",
"{VIN4P, VIN4M}[DIFF]",
"{VIN1P, VIN1M}[DIFF] + {VIN4P, VIN4M}[DIFF]"
};
static const char * const pcm186x_adcr_input_channel_sel_text[] = {
"No Select",
"VINR1[SE]", /* Default for ADC1R */
"VINR2[SE]", /* Default for ADC2R */
"VINR2[SE] + VINR1[SE]",
"VINR3[SE]",
"VINR3[SE] + VINR1[SE]",
"VINR3[SE] + VINR2[SE]",
"VINR3[SE] + VINR2[SE] + VINR1[SE]",
"VINR4[SE]",
"VINR4[SE] + VINR1[SE]",
"VINR4[SE] + VINR2[SE]",
"VINR4[SE] + VINR2[SE] + VINR1[SE]",
"VINR4[SE] + VINR3[SE]",
"VINR4[SE] + VINR3[SE] + VINR1[SE]",
"VINR4[SE] + VINR3[SE] + VINR2[SE]",
"VINR4[SE] + VINR3[SE] + VINR2[SE] + VINR1[SE]",
"{VIN2P, VIN2M}[DIFF]",
"{VIN3P, VIN3M}[DIFF]",
"{VIN2P, VIN2M}[DIFF] + {VIN3P, VIN3M}[DIFF]"
};
static const struct soc_enum pcm186x_adc_input_channel_sel[] = {
SOC_VALUE_ENUM_SINGLE(PCM186X_ADC1_INPUT_SEL_L, 0,
PCM186X_ADC_INPUT_SEL_MASK,
ARRAY_SIZE(pcm186x_adcl_input_channel_sel_text),
pcm186x_adcl_input_channel_sel_text,
pcm186x_adc_input_channel_sel_value),
SOC_VALUE_ENUM_SINGLE(PCM186X_ADC1_INPUT_SEL_R, 0,
PCM186X_ADC_INPUT_SEL_MASK,
ARRAY_SIZE(pcm186x_adcr_input_channel_sel_text),
pcm186x_adcr_input_channel_sel_text,
pcm186x_adc_input_channel_sel_value),
SOC_VALUE_ENUM_SINGLE(PCM186X_ADC2_INPUT_SEL_L, 0,
PCM186X_ADC_INPUT_SEL_MASK,
ARRAY_SIZE(pcm186x_adcl_input_channel_sel_text),
pcm186x_adcl_input_channel_sel_text,
pcm186x_adc_input_channel_sel_value),
SOC_VALUE_ENUM_SINGLE(PCM186X_ADC2_INPUT_SEL_R, 0,
PCM186X_ADC_INPUT_SEL_MASK,
ARRAY_SIZE(pcm186x_adcr_input_channel_sel_text),
pcm186x_adcr_input_channel_sel_text,
pcm186x_adc_input_channel_sel_value),
};
static const struct snd_kcontrol_new pcm186x_adc_mux_controls[] = {
SOC_DAPM_ENUM("ADC1 Left Input", pcm186x_adc_input_channel_sel[0]),
SOC_DAPM_ENUM("ADC1 Right Input", pcm186x_adc_input_channel_sel[1]),
SOC_DAPM_ENUM("ADC2 Left Input", pcm186x_adc_input_channel_sel[2]),
SOC_DAPM_ENUM("ADC2 Right Input", pcm186x_adc_input_channel_sel[3]),
};
static const struct snd_soc_dapm_widget pcm1863_dapm_widgets[] = {
SND_SOC_DAPM_INPUT("VINL1"),
SND_SOC_DAPM_INPUT("VINR1"),
SND_SOC_DAPM_INPUT("VINL2"),
SND_SOC_DAPM_INPUT("VINR2"),
SND_SOC_DAPM_INPUT("VINL3"),
SND_SOC_DAPM_INPUT("VINR3"),
SND_SOC_DAPM_INPUT("VINL4"),
SND_SOC_DAPM_INPUT("VINR4"),
SND_SOC_DAPM_MUX("ADC Left Capture Source", SND_SOC_NOPM, 0, 0,
&pcm186x_adc_mux_controls[0]),
SND_SOC_DAPM_MUX("ADC Right Capture Source", SND_SOC_NOPM, 0, 0,
&pcm186x_adc_mux_controls[1]),
/*
* Put the codec into SLEEP mode when not in use, allowing the
* Energysense mechanism to operate.
*/
SND_SOC_DAPM_ADC("ADC", "HiFi Capture", PCM186X_POWER_CTRL, 1, 0),
};
static const struct snd_soc_dapm_widget pcm1865_dapm_widgets[] = {
SND_SOC_DAPM_INPUT("VINL1"),
SND_SOC_DAPM_INPUT("VINR1"),
SND_SOC_DAPM_INPUT("VINL2"),
SND_SOC_DAPM_INPUT("VINR2"),
SND_SOC_DAPM_INPUT("VINL3"),
SND_SOC_DAPM_INPUT("VINR3"),
SND_SOC_DAPM_INPUT("VINL4"),
SND_SOC_DAPM_INPUT("VINR4"),
SND_SOC_DAPM_MUX("ADC1 Left Capture Source", SND_SOC_NOPM, 0, 0,
&pcm186x_adc_mux_controls[0]),
SND_SOC_DAPM_MUX("ADC1 Right Capture Source", SND_SOC_NOPM, 0, 0,
&pcm186x_adc_mux_controls[1]),
SND_SOC_DAPM_MUX("ADC2 Left Capture Source", SND_SOC_NOPM, 0, 0,
&pcm186x_adc_mux_controls[2]),
SND_SOC_DAPM_MUX("ADC2 Right Capture Source", SND_SOC_NOPM, 0, 0,
&pcm186x_adc_mux_controls[3]),
/*
* Put the codec into SLEEP mode when not in use, allowing the
* Energysense mechanism to operate.
*/
SND_SOC_DAPM_ADC("ADC1", "HiFi Capture 1", PCM186X_POWER_CTRL, 1, 0),
SND_SOC_DAPM_ADC("ADC2", "HiFi Capture 2", PCM186X_POWER_CTRL, 1, 0),
};
static const struct snd_soc_dapm_route pcm1863_dapm_routes[] = {
{ "ADC Left Capture Source", NULL, "VINL1" },
{ "ADC Left Capture Source", NULL, "VINR1" },
{ "ADC Left Capture Source", NULL, "VINL2" },
{ "ADC Left Capture Source", NULL, "VINR2" },
{ "ADC Left Capture Source", NULL, "VINL3" },
{ "ADC Left Capture Source", NULL, "VINR3" },
{ "ADC Left Capture Source", NULL, "VINL4" },
{ "ADC Left Capture Source", NULL, "VINR4" },
{ "ADC", NULL, "ADC Left Capture Source" },
{ "ADC Right Capture Source", NULL, "VINL1" },
{ "ADC Right Capture Source", NULL, "VINR1" },
{ "ADC Right Capture Source", NULL, "VINL2" },
{ "ADC Right Capture Source", NULL, "VINR2" },
{ "ADC Right Capture Source", NULL, "VINL3" },
{ "ADC Right Capture Source", NULL, "VINR3" },
{ "ADC Right Capture Source", NULL, "VINL4" },
{ "ADC Right Capture Source", NULL, "VINR4" },
{ "ADC", NULL, "ADC Right Capture Source" },
};
static const struct snd_soc_dapm_route pcm1865_dapm_routes[] = {
{ "ADC1 Left Capture Source", NULL, "VINL1" },
{ "ADC1 Left Capture Source", NULL, "VINR1" },
{ "ADC1 Left Capture Source", NULL, "VINL2" },
{ "ADC1 Left Capture Source", NULL, "VINR2" },
{ "ADC1 Left Capture Source", NULL, "VINL3" },
{ "ADC1 Left Capture Source", NULL, "VINR3" },
{ "ADC1 Left Capture Source", NULL, "VINL4" },
{ "ADC1 Left Capture Source", NULL, "VINR4" },
{ "ADC1", NULL, "ADC1 Left Capture Source" },
{ "ADC1 Right Capture Source", NULL, "VINL1" },
{ "ADC1 Right Capture Source", NULL, "VINR1" },
{ "ADC1 Right Capture Source", NULL, "VINL2" },
{ "ADC1 Right Capture Source", NULL, "VINR2" },
{ "ADC1 Right Capture Source", NULL, "VINL3" },
{ "ADC1 Right Capture Source", NULL, "VINR3" },
{ "ADC1 Right Capture Source", NULL, "VINL4" },
{ "ADC1 Right Capture Source", NULL, "VINR4" },
{ "ADC1", NULL, "ADC1 Right Capture Source" },
{ "ADC2 Left Capture Source", NULL, "VINL1" },
{ "ADC2 Left Capture Source", NULL, "VINR1" },
{ "ADC2 Left Capture Source", NULL, "VINL2" },
{ "ADC2 Left Capture Source", NULL, "VINR2" },
{ "ADC2 Left Capture Source", NULL, "VINL3" },
{ "ADC2 Left Capture Source", NULL, "VINR3" },
{ "ADC2 Left Capture Source", NULL, "VINL4" },
{ "ADC2 Left Capture Source", NULL, "VINR4" },
{ "ADC2", NULL, "ADC2 Left Capture Source" },
{ "ADC2 Right Capture Source", NULL, "VINL1" },
{ "ADC2 Right Capture Source", NULL, "VINR1" },
{ "ADC2 Right Capture Source", NULL, "VINL2" },
{ "ADC2 Right Capture Source", NULL, "VINR2" },
{ "ADC2 Right Capture Source", NULL, "VINL3" },
{ "ADC2 Right Capture Source", NULL, "VINR3" },
{ "ADC2 Right Capture Source", NULL, "VINL4" },
{ "ADC2 Right Capture Source", NULL, "VINR4" },
{ "ADC2", NULL, "ADC2 Right Capture Source" },
};
static int pcm186x_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 pcm186x_priv *priv = snd_soc_codec_get_drvdata(codec);
unsigned int rate = params_rate(params);
unsigned int format = params_format(params);
unsigned int width = params_width(params);
unsigned int channels = params_channels(params);
unsigned int div_lrck;
unsigned int div_bck;
u8 tdm_tx_sel = 0;
u8 pcm_cfg = 0;
dev_dbg(codec->dev, "%s() rate=%u format=0x%x width=%u channels=%u\n",
__func__, rate, format, width, channels);
switch (width) {
case 16:
pcm_cfg = PCM186X_PCM_CFG_RX_WLEN_16 <<
PCM186X_PCM_CFG_RX_WLEN_SHIFT |
PCM186X_PCM_CFG_TX_WLEN_16 <<
PCM186X_PCM_CFG_TX_WLEN_SHIFT;
break;
case 20:
pcm_cfg = PCM186X_PCM_CFG_RX_WLEN_20 <<
PCM186X_PCM_CFG_RX_WLEN_SHIFT |
PCM186X_PCM_CFG_TX_WLEN_20 <<
PCM186X_PCM_CFG_TX_WLEN_SHIFT;
break;
case 24:
pcm_cfg = PCM186X_PCM_CFG_RX_WLEN_24 <<
PCM186X_PCM_CFG_RX_WLEN_SHIFT |
PCM186X_PCM_CFG_TX_WLEN_24 <<
PCM186X_PCM_CFG_TX_WLEN_SHIFT;
break;
case 32:
pcm_cfg = PCM186X_PCM_CFG_RX_WLEN_32 <<
PCM186X_PCM_CFG_RX_WLEN_SHIFT |
PCM186X_PCM_CFG_TX_WLEN_32 <<
PCM186X_PCM_CFG_TX_WLEN_SHIFT;
break;
default:
return -EINVAL;
}
snd_soc_update_bits(codec, PCM186X_PCM_CFG,
PCM186X_PCM_CFG_RX_WLEN_MASK |
PCM186X_PCM_CFG_TX_WLEN_MASK,
pcm_cfg);
div_lrck = width * channels;
if (priv->is_tdm_mode) {
/* Select TDM transmission data */
switch (channels) {
case 2:
tdm_tx_sel = PCM186X_TDM_TX_SEL_2CH;
break;
case 4:
tdm_tx_sel = PCM186X_TDM_TX_SEL_4CH;
break;
case 6:
tdm_tx_sel = PCM186X_TDM_TX_SEL_6CH;
break;
default:
return -EINVAL;
}
snd_soc_update_bits(codec, PCM186X_TDM_TX_SEL,
PCM186X_TDM_TX_SEL_MASK, tdm_tx_sel);
/* In DSP/TDM mode, the LRCLK divider must be 256 */
div_lrck = 256;
/* Configure 1/256 duty cycle for LRCK */
snd_soc_update_bits(codec, PCM186X_PCM_CFG,
PCM186X_PCM_CFG_TDM_LRCK_MODE,
PCM186X_PCM_CFG_TDM_LRCK_MODE);
}
/* Only configure clock dividers in master mode. */
if (priv->is_master_mode) {
div_bck = priv->sysclk / (div_lrck * rate);
dev_dbg(codec->dev,
"%s() master_clk=%u div_bck=%u div_lrck=%u\n",
__func__, priv->sysclk, div_bck, div_lrck);
snd_soc_write(codec, PCM186X_BCK_DIV, div_bck - 1);
snd_soc_write(codec, PCM186X_LRK_DIV, div_lrck - 1);
}
return 0;
}
static int pcm186x_set_fmt(struct snd_soc_dai *dai, unsigned int format)
{
struct snd_soc_codec *codec = dai->codec;
struct pcm186x_priv *priv = snd_soc_codec_get_drvdata(codec);
u8 clk_ctrl = 0;
u8 pcm_cfg = 0;
dev_dbg(codec->dev, "%s() format=0x%x\n", __func__, format);
/* set master/slave audio interface */
switch (format & SND_SOC_DAIFMT_MASTER_MASK) {
case SND_SOC_DAIFMT_CBM_CFM:
if (!priv->sysclk) {
dev_err(codec->dev, "operating in master mode requires sysclock to be configured\n");
return -EINVAL;
}
clk_ctrl |= PCM186X_CLK_CTRL_MST_MODE;
priv->is_master_mode = true;
break;
case SND_SOC_DAIFMT_CBS_CFS:
priv->is_master_mode = false;
break;
default:
dev_err(codec->dev, "Invalid DAI master/slave interface\n");
return -EINVAL;
}
/* set interface polarity */
switch (format & SND_SOC_DAIFMT_INV_MASK) {
case SND_SOC_DAIFMT_NB_NF:
break;
default:
dev_err(codec->dev, "Inverted DAI clocks not supported\n");
return -EINVAL;
}
/* set interface format */
switch (format & SND_SOC_DAIFMT_FORMAT_MASK) {
case SND_SOC_DAIFMT_I2S:
pcm_cfg = PCM186X_PCM_CFG_FMT_I2S;
break;
case SND_SOC_DAIFMT_LEFT_J:
pcm_cfg = PCM186X_PCM_CFG_FMT_LEFTJ;
break;
case SND_SOC_DAIFMT_DSP_A:
priv->tdm_offset += 1;
/* Fall through... DSP_A uses the same basic config as DSP_B
* except we need to shift the TDM output by one BCK cycle
*/
case SND_SOC_DAIFMT_DSP_B:
priv->is_tdm_mode = true;
pcm_cfg = PCM186X_PCM_CFG_FMT_TDM;
break;
default:
dev_err(codec->dev, "Invalid DAI format\n");
return -EINVAL;
}
snd_soc_update_bits(codec, PCM186X_CLK_CTRL,
PCM186X_CLK_CTRL_MST_MODE, clk_ctrl);
snd_soc_write(codec, PCM186X_TDM_TX_OFFSET, priv->tdm_offset);
snd_soc_update_bits(codec, PCM186X_PCM_CFG,
PCM186X_PCM_CFG_FMT_MASK, pcm_cfg);
return 0;
}
static int pcm186x_set_tdm_slot(struct snd_soc_dai *dai, unsigned int tx_mask,
unsigned int rx_mask, int slots, int slot_width)
{
struct snd_soc_codec *codec = dai->codec;
struct pcm186x_priv *priv = snd_soc_codec_get_drvdata(codec);
unsigned int first_slot, last_slot, tdm_offset;
dev_dbg(codec->dev,
"%s() tx_mask=0x%x rx_mask=0x%x slots=%d slot_width=%d\n",
__func__, tx_mask, rx_mask, slots, slot_width);
if (!tx_mask) {
dev_err(codec->dev, "tdm tx mask must not be 0\n");
return -EINVAL;
}
first_slot = __ffs(tx_mask);
last_slot = __fls(tx_mask);
if (last_slot - first_slot != hweight32(tx_mask) - 1) {
dev_err(codec->dev, "tdm tx mask must be contiguous\n");
return -EINVAL;
}
tdm_offset = first_slot * slot_width;
if (tdm_offset > 255) {
dev_err(codec->dev, "tdm tx slot selection out of bounds\n");
return -EINVAL;
}
priv->tdm_offset = tdm_offset;
return 0;
}
static int pcm186x_set_dai_sysclk(struct snd_soc_dai *dai, int clk_id,
unsigned int freq, int dir)
{
struct snd_soc_codec *codec = dai->codec;
struct pcm186x_priv *priv = snd_soc_codec_get_drvdata(codec);
dev_dbg(codec->dev, "%s() clk_id=%d freq=%u dir=%d\n",
__func__, clk_id, freq, dir);
priv->sysclk = freq;
return 0;
}
const struct snd_soc_dai_ops pcm186x_dai_ops = {
.set_sysclk = pcm186x_set_dai_sysclk,
.set_tdm_slot = pcm186x_set_tdm_slot,
.set_fmt = pcm186x_set_fmt,
.hw_params = pcm186x_hw_params,
};
static struct snd_soc_dai_driver pcm1863_dai = {
.name = "pcm1863-aif",
.capture = {
.stream_name = "Capture",
.channels_min = 1,
.channels_max = 2,
.rates = PCM186X_RATES,
.formats = PCM186X_FORMATS,
},
.ops = &pcm186x_dai_ops,
};
static struct snd_soc_dai_driver pcm1865_dai = {
.name = "pcm1865-aif",
.capture = {
.stream_name = "Capture",
.channels_min = 1,
.channels_max = 4,
.rates = PCM186X_RATES,
.formats = PCM186X_FORMATS,
},
.ops = &pcm186x_dai_ops,
};
static int pcm186x_power_on(struct snd_soc_codec *codec)
{
struct pcm186x_priv *priv = snd_soc_codec_get_drvdata(codec);
int ret = 0;
ret = regulator_bulk_enable(ARRAY_SIZE(priv->supplies),
priv->supplies);
if (ret)
return ret;
regcache_cache_only(priv->regmap, false);
ret = regcache_sync(priv->regmap);
if (ret) {
dev_err(codec->dev, "Failed to restore cache\n");
regcache_cache_only(priv->regmap, true);
regulator_bulk_disable(ARRAY_SIZE(priv->supplies),
priv->supplies);
return ret;
}
snd_soc_update_bits(codec, PCM186X_POWER_CTRL,
PCM186X_PWR_CTRL_PWRDN, 0);
return 0;
}
static int pcm186x_power_off(struct snd_soc_codec *codec)
{
struct pcm186x_priv *priv = snd_soc_codec_get_drvdata(codec);
int ret;
snd_soc_update_bits(codec, PCM186X_POWER_CTRL,
PCM186X_PWR_CTRL_PWRDN, PCM186X_PWR_CTRL_PWRDN);
regcache_cache_only(priv->regmap, true);
ret = regulator_bulk_disable(ARRAY_SIZE(priv->supplies),
priv->supplies);
if (ret)
return ret;
return 0;
}
static int pcm186x_set_bias_level(struct snd_soc_codec *codec,
enum snd_soc_bias_level level)
{
dev_dbg(codec->dev, "## %s: %d -> %d\n", __func__,
snd_soc_codec_get_bias_level(codec), level);
switch (level) {
case SND_SOC_BIAS_ON:
break;
case SND_SOC_BIAS_PREPARE:
break;
case SND_SOC_BIAS_STANDBY:
if (snd_soc_codec_get_bias_level(codec) == SND_SOC_BIAS_OFF)
pcm186x_power_on(codec);
break;
case SND_SOC_BIAS_OFF:
pcm186x_power_off(codec);
break;
}
return 0;
}
static struct snd_soc_codec_driver soc_codec_dev_pcm1863 = {
.set_bias_level = pcm186x_set_bias_level,
.component_driver = {
.controls = pcm1863_snd_controls,
.num_controls = ARRAY_SIZE(pcm1863_snd_controls),
.dapm_widgets = pcm1863_dapm_widgets,
.num_dapm_widgets = ARRAY_SIZE(pcm1863_dapm_widgets),
.dapm_routes = pcm1863_dapm_routes,
.num_dapm_routes = ARRAY_SIZE(pcm1863_dapm_routes),
},
};
static struct snd_soc_codec_driver soc_codec_dev_pcm1865 = {
.set_bias_level = pcm186x_set_bias_level,
.suspend_bias_off = true,
.component_driver = {
.controls = pcm1865_snd_controls,
.num_controls = ARRAY_SIZE(pcm1865_snd_controls),
.dapm_widgets = pcm1865_dapm_widgets,
.num_dapm_widgets = ARRAY_SIZE(pcm1865_dapm_widgets),
.dapm_routes = pcm1865_dapm_routes,
.num_dapm_routes = ARRAY_SIZE(pcm1865_dapm_routes),
},
};
static bool pcm186x_volatile(struct device *dev, unsigned int reg)
{
switch (reg) {
case PCM186X_PAGE:
case PCM186X_DEVICE_STATUS:
case PCM186X_FSAMPLE_STATUS:
case PCM186X_DIV_STATUS:
case PCM186X_CLK_STATUS:
case PCM186X_SUPPLY_STATUS:
case PCM186X_MMAP_STAT_CTRL:
case PCM186X_MMAP_ADDRESS:
return true;
}
return false;
}
static const struct regmap_range_cfg pcm186x_range = {
.name = "Pages",
.range_max = PCM186X_MAX_REGISTER,
.selector_reg = PCM186X_PAGE,
.selector_mask = 0xff,
.window_len = PCM186X_PAGE_LEN,
};
const struct regmap_config pcm186x_regmap = {
.reg_bits = 8,
.val_bits = 8,
.volatile_reg = pcm186x_volatile,
.ranges = &pcm186x_range,
.num_ranges = 1,
.max_register = PCM186X_MAX_REGISTER,
.cache_type = REGCACHE_RBTREE,
};
EXPORT_SYMBOL_GPL(pcm186x_regmap);
int pcm186x_probe(struct device *dev, enum pcm186x_type type, int irq,
struct regmap *regmap)
{
struct pcm186x_priv *priv;
int i, ret;
priv = devm_kzalloc(dev, sizeof(struct pcm186x_priv), GFP_KERNEL);
if (!priv)
return -ENOMEM;
dev_set_drvdata(dev, priv);
priv->regmap = regmap;
for (i = 0; i < ARRAY_SIZE(priv->supplies); i++)
priv->supplies[i].supply = pcm186x_supply_names[i];
ret = devm_regulator_bulk_get(dev, ARRAY_SIZE(priv->supplies),
priv->supplies);
if (ret) {
dev_err(dev, "failed to request supplies: %d\n", ret);
return ret;
}
ret = regulator_bulk_enable(ARRAY_SIZE(priv->supplies),
priv->supplies);
if (ret) {
dev_err(dev, "failed enable supplies: %d\n", ret);
return ret;
}
/* Reset device registers for a consistent power-on like state */
ret = regmap_write(regmap, PCM186X_PAGE, PCM186X_RESET);
if (ret) {
dev_err(dev, "failed to write device: %d\n", ret);
return ret;
}
ret = regulator_bulk_disable(ARRAY_SIZE(priv->supplies),
priv->supplies);
if (ret) {
dev_err(dev, "failed disable supplies: %d\n", ret);
return ret;
}
switch (type) {
case PCM1865:
case PCM1864:
ret = snd_soc_register_codec(dev, &soc_codec_dev_pcm1865,
&pcm1865_dai, 1);
break;
case PCM1863:
case PCM1862:
default:
ret = snd_soc_register_codec(dev, &soc_codec_dev_pcm1863,
&pcm1863_dai, 1);
}
if (ret) {
dev_err(dev, "failed to register CODEC: %d\n", ret);
return ret;
}
return 0;
}
EXPORT_SYMBOL_GPL(pcm186x_probe);
int pcm186x_remove(struct device *dev)
{
snd_soc_unregister_codec(dev);
return 0;
}
EXPORT_SYMBOL_GPL(pcm186x_remove);
MODULE_AUTHOR("Andreas Dannenberg <dannenberg@ti.com>");
MODULE_AUTHOR("Andrew F. Davis <afd@ti.com>");
MODULE_DESCRIPTION("PCM186x Universal Audio ADC driver");
MODULE_LICENSE("GPL v2");
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