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linux_dsm_epyc7002/sound/soc/codecs/nau8825.c
Javier Martinez Canillas ffd72505b0 ASoC: nau8825: Export I2C module alias information 
The I2C driver has an i2c_device_id array but that information isn't
exported to the module using the MODULE_DEVICE_TABLE() macro. So the
module autoloading won't work if the I2C device is registered using
OF or legacy board files due missing alias information in the module.

The issue was found using Kieran Bingham's coccinelle semantic patch:
https://lkml.org/lkml/2016/5/10/520

Signed-off-by: Javier Martinez Canillas <javier@osg.samsung.com>
Signed-off-by: Mark Brown <broonie@kernel.org>
2016-05-30 16:17:44 +01:00

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/*
* Nuvoton NAU8825 audio codec driver
*
* Copyright 2015 Google Chromium project.
* Author: Anatol Pomozov <anatol@chromium.org>
* Copyright 2015 Nuvoton Technology Corp.
* Co-author: Meng-Huang Kuo <mhkuo@nuvoton.com>
*
* Licensed under the GPL-2.
*/
#include <linux/module.h>
#include <linux/delay.h>
#include <linux/init.h>
#include <linux/i2c.h>
#include <linux/regmap.h>
#include <linux/slab.h>
#include <linux/clk.h>
#include <linux/acpi.h>
#include <linux/math64.h>
#include <sound/initval.h>
#include <sound/tlv.h>
#include <sound/core.h>
#include <sound/pcm.h>
#include <sound/pcm_params.h>
#include <sound/soc.h>
#include <sound/jack.h>
#include "nau8825.h"
#define NAU_FREF_MAX 13500000
#define NAU_FVCO_MAX 124000000
#define NAU_FVCO_MIN 90000000
struct nau8825_fll {
int mclk_src;
int ratio;
int fll_frac;
int fll_int;
int clk_ref_div;
};
struct nau8825_fll_attr {
unsigned int param;
unsigned int val;
};
/* scaling for mclk from sysclk_src output */
static const struct nau8825_fll_attr mclk_src_scaling[] = {
{ 1, 0x0 },
{ 2, 0x2 },
{ 4, 0x3 },
{ 8, 0x4 },
{ 16, 0x5 },
{ 32, 0x6 },
{ 3, 0x7 },
{ 6, 0xa },
{ 12, 0xb },
{ 24, 0xc },
{ 48, 0xd },
{ 96, 0xe },
{ 5, 0xf },
};
/* ratio for input clk freq */
static const struct nau8825_fll_attr fll_ratio[] = {
{ 512000, 0x01 },
{ 256000, 0x02 },
{ 128000, 0x04 },
{ 64000, 0x08 },
{ 32000, 0x10 },
{ 8000, 0x20 },
{ 4000, 0x40 },
};
static const struct nau8825_fll_attr fll_pre_scalar[] = {
{ 1, 0x0 },
{ 2, 0x1 },
{ 4, 0x2 },
{ 8, 0x3 },
};
static const struct reg_default nau8825_reg_defaults[] = {
{ NAU8825_REG_ENA_CTRL, 0x00ff },
{ NAU8825_REG_IIC_ADDR_SET, 0x0 },
{ NAU8825_REG_CLK_DIVIDER, 0x0050 },
{ NAU8825_REG_FLL1, 0x0 },
{ NAU8825_REG_FLL2, 0x3126 },
{ NAU8825_REG_FLL3, 0x0008 },
{ NAU8825_REG_FLL4, 0x0010 },
{ NAU8825_REG_FLL5, 0x0 },
{ NAU8825_REG_FLL6, 0x6000 },
{ NAU8825_REG_FLL_VCO_RSV, 0xf13c },
{ NAU8825_REG_HSD_CTRL, 0x000c },
{ NAU8825_REG_JACK_DET_CTRL, 0x0 },
{ NAU8825_REG_INTERRUPT_MASK, 0x0 },
{ NAU8825_REG_INTERRUPT_DIS_CTRL, 0xffff },
{ NAU8825_REG_SAR_CTRL, 0x0015 },
{ NAU8825_REG_KEYDET_CTRL, 0x0110 },
{ NAU8825_REG_VDET_THRESHOLD_1, 0x0 },
{ NAU8825_REG_VDET_THRESHOLD_2, 0x0 },
{ NAU8825_REG_VDET_THRESHOLD_3, 0x0 },
{ NAU8825_REG_VDET_THRESHOLD_4, 0x0 },
{ NAU8825_REG_GPIO34_CTRL, 0x0 },
{ NAU8825_REG_GPIO12_CTRL, 0x0 },
{ NAU8825_REG_TDM_CTRL, 0x0 },
{ NAU8825_REG_I2S_PCM_CTRL1, 0x000b },
{ NAU8825_REG_I2S_PCM_CTRL2, 0x8010 },
{ NAU8825_REG_LEFT_TIME_SLOT, 0x0 },
{ NAU8825_REG_RIGHT_TIME_SLOT, 0x0 },
{ NAU8825_REG_BIQ_CTRL, 0x0 },
{ NAU8825_REG_BIQ_COF1, 0x0 },
{ NAU8825_REG_BIQ_COF2, 0x0 },
{ NAU8825_REG_BIQ_COF3, 0x0 },
{ NAU8825_REG_BIQ_COF4, 0x0 },
{ NAU8825_REG_BIQ_COF5, 0x0 },
{ NAU8825_REG_BIQ_COF6, 0x0 },
{ NAU8825_REG_BIQ_COF7, 0x0 },
{ NAU8825_REG_BIQ_COF8, 0x0 },
{ NAU8825_REG_BIQ_COF9, 0x0 },
{ NAU8825_REG_BIQ_COF10, 0x0 },
{ NAU8825_REG_ADC_RATE, 0x0010 },
{ NAU8825_REG_DAC_CTRL1, 0x0001 },
{ NAU8825_REG_DAC_CTRL2, 0x0 },
{ NAU8825_REG_DAC_DGAIN_CTRL, 0x0 },
{ NAU8825_REG_ADC_DGAIN_CTRL, 0x00cf },
{ NAU8825_REG_MUTE_CTRL, 0x0 },
{ NAU8825_REG_HSVOL_CTRL, 0x0 },
{ NAU8825_REG_DACL_CTRL, 0x02cf },
{ NAU8825_REG_DACR_CTRL, 0x00cf },
{ NAU8825_REG_ADC_DRC_KNEE_IP12, 0x1486 },
{ NAU8825_REG_ADC_DRC_KNEE_IP34, 0x0f12 },
{ NAU8825_REG_ADC_DRC_SLOPES, 0x25ff },
{ NAU8825_REG_ADC_DRC_ATKDCY, 0x3457 },
{ NAU8825_REG_DAC_DRC_KNEE_IP12, 0x1486 },
{ NAU8825_REG_DAC_DRC_KNEE_IP34, 0x0f12 },
{ NAU8825_REG_DAC_DRC_SLOPES, 0x25f9 },
{ NAU8825_REG_DAC_DRC_ATKDCY, 0x3457 },
{ NAU8825_REG_IMM_MODE_CTRL, 0x0 },
{ NAU8825_REG_CLASSG_CTRL, 0x0 },
{ NAU8825_REG_OPT_EFUSE_CTRL, 0x0 },
{ NAU8825_REG_MISC_CTRL, 0x0 },
{ NAU8825_REG_BIAS_ADJ, 0x0 },
{ NAU8825_REG_TRIM_SETTINGS, 0x0 },
{ NAU8825_REG_ANALOG_CONTROL_1, 0x0 },
{ NAU8825_REG_ANALOG_CONTROL_2, 0x0 },
{ NAU8825_REG_ANALOG_ADC_1, 0x0011 },
{ NAU8825_REG_ANALOG_ADC_2, 0x0020 },
{ NAU8825_REG_RDAC, 0x0008 },
{ NAU8825_REG_MIC_BIAS, 0x0006 },
{ NAU8825_REG_BOOST, 0x0 },
{ NAU8825_REG_FEPGA, 0x0 },
{ NAU8825_REG_POWER_UP_CONTROL, 0x0 },
{ NAU8825_REG_CHARGE_PUMP, 0x0 },
};
static bool nau8825_readable_reg(struct device *dev, unsigned int reg)
{
switch (reg) {
case NAU8825_REG_ENA_CTRL ... NAU8825_REG_FLL_VCO_RSV:
case NAU8825_REG_HSD_CTRL ... NAU8825_REG_JACK_DET_CTRL:
case NAU8825_REG_INTERRUPT_MASK ... NAU8825_REG_KEYDET_CTRL:
case NAU8825_REG_VDET_THRESHOLD_1 ... NAU8825_REG_DACR_CTRL:
case NAU8825_REG_ADC_DRC_KNEE_IP12 ... NAU8825_REG_ADC_DRC_ATKDCY:
case NAU8825_REG_DAC_DRC_KNEE_IP12 ... NAU8825_REG_DAC_DRC_ATKDCY:
case NAU8825_REG_IMM_MODE_CTRL ... NAU8825_REG_IMM_RMS_R:
case NAU8825_REG_CLASSG_CTRL ... NAU8825_REG_OPT_EFUSE_CTRL:
case NAU8825_REG_MISC_CTRL:
case NAU8825_REG_I2C_DEVICE_ID ... NAU8825_REG_SARDOUT_RAM_STATUS:
case NAU8825_REG_BIAS_ADJ:
case NAU8825_REG_TRIM_SETTINGS ... NAU8825_REG_ANALOG_CONTROL_2:
case NAU8825_REG_ANALOG_ADC_1 ... NAU8825_REG_MIC_BIAS:
case NAU8825_REG_BOOST ... NAU8825_REG_FEPGA:
case NAU8825_REG_POWER_UP_CONTROL ... NAU8825_REG_GENERAL_STATUS:
return true;
default:
return false;
}
}
static bool nau8825_writeable_reg(struct device *dev, unsigned int reg)
{
switch (reg) {
case NAU8825_REG_RESET ... NAU8825_REG_FLL_VCO_RSV:
case NAU8825_REG_HSD_CTRL ... NAU8825_REG_JACK_DET_CTRL:
case NAU8825_REG_INTERRUPT_MASK:
case NAU8825_REG_INT_CLR_KEY_STATUS ... NAU8825_REG_KEYDET_CTRL:
case NAU8825_REG_VDET_THRESHOLD_1 ... NAU8825_REG_DACR_CTRL:
case NAU8825_REG_ADC_DRC_KNEE_IP12 ... NAU8825_REG_ADC_DRC_ATKDCY:
case NAU8825_REG_DAC_DRC_KNEE_IP12 ... NAU8825_REG_DAC_DRC_ATKDCY:
case NAU8825_REG_IMM_MODE_CTRL:
case NAU8825_REG_CLASSG_CTRL ... NAU8825_REG_OPT_EFUSE_CTRL:
case NAU8825_REG_MISC_CTRL:
case NAU8825_REG_BIAS_ADJ:
case NAU8825_REG_TRIM_SETTINGS ... NAU8825_REG_ANALOG_CONTROL_2:
case NAU8825_REG_ANALOG_ADC_1 ... NAU8825_REG_MIC_BIAS:
case NAU8825_REG_BOOST ... NAU8825_REG_FEPGA:
case NAU8825_REG_POWER_UP_CONTROL ... NAU8825_REG_CHARGE_PUMP:
return true;
default:
return false;
}
}
static bool nau8825_volatile_reg(struct device *dev, unsigned int reg)
{
switch (reg) {
case NAU8825_REG_RESET:
case NAU8825_REG_IRQ_STATUS:
case NAU8825_REG_INT_CLR_KEY_STATUS:
case NAU8825_REG_IMM_RMS_L:
case NAU8825_REG_IMM_RMS_R:
case NAU8825_REG_I2C_DEVICE_ID:
case NAU8825_REG_SARDOUT_RAM_STATUS:
case NAU8825_REG_CHARGE_PUMP_INPUT_READ:
case NAU8825_REG_GENERAL_STATUS:
return true;
default:
return false;
}
}
static int nau8825_adc_event(struct snd_soc_dapm_widget *w,
struct snd_kcontrol *kcontrol, int event)
{
struct snd_soc_codec *codec = snd_soc_dapm_to_codec(w->dapm);
struct nau8825 *nau8825 = snd_soc_codec_get_drvdata(codec);
switch (event) {
case SND_SOC_DAPM_POST_PMU:
regmap_update_bits(nau8825->regmap, NAU8825_REG_ENA_CTRL,
NAU8825_ENABLE_ADC, NAU8825_ENABLE_ADC);
break;
case SND_SOC_DAPM_POST_PMD:
if (!nau8825->irq)
regmap_update_bits(nau8825->regmap,
NAU8825_REG_ENA_CTRL, NAU8825_ENABLE_ADC, 0);
break;
default:
return -EINVAL;
}
return 0;
}
static int nau8825_pump_event(struct snd_soc_dapm_widget *w,
struct snd_kcontrol *kcontrol, int event)
{
struct snd_soc_codec *codec = snd_soc_dapm_to_codec(w->dapm);
struct nau8825 *nau8825 = snd_soc_codec_get_drvdata(codec);
switch (event) {
case SND_SOC_DAPM_POST_PMU:
/* Prevent startup click by letting charge pump to ramp up */
msleep(10);
regmap_update_bits(nau8825->regmap, NAU8825_REG_CHARGE_PUMP,
NAU8825_JAMNODCLOW, NAU8825_JAMNODCLOW);
break;
case SND_SOC_DAPM_PRE_PMD:
regmap_update_bits(nau8825->regmap, NAU8825_REG_CHARGE_PUMP,
NAU8825_JAMNODCLOW, 0);
break;
default:
return -EINVAL;
}
return 0;
}
static int nau8825_output_dac_event(struct snd_soc_dapm_widget *w,
struct snd_kcontrol *kcontrol, int event)
{
struct snd_soc_codec *codec = snd_soc_dapm_to_codec(w->dapm);
struct nau8825 *nau8825 = snd_soc_codec_get_drvdata(codec);
switch (event) {
case SND_SOC_DAPM_PRE_PMU:
/* Disables the TESTDAC to let DAC signal pass through. */
regmap_update_bits(nau8825->regmap, NAU8825_REG_BIAS_ADJ,
NAU8825_BIAS_TESTDAC_EN, 0);
break;
case SND_SOC_DAPM_POST_PMD:
regmap_update_bits(nau8825->regmap, NAU8825_REG_BIAS_ADJ,
NAU8825_BIAS_TESTDAC_EN, NAU8825_BIAS_TESTDAC_EN);
break;
default:
return -EINVAL;
}
return 0;
}
static const char * const nau8825_adc_decimation[] = {
"32", "64", "128", "256"
};
static const struct soc_enum nau8825_adc_decimation_enum =
SOC_ENUM_SINGLE(NAU8825_REG_ADC_RATE, NAU8825_ADC_SYNC_DOWN_SFT,
ARRAY_SIZE(nau8825_adc_decimation), nau8825_adc_decimation);
static const char * const nau8825_dac_oversampl[] = {
"64", "256", "128", "", "32"
};
static const struct soc_enum nau8825_dac_oversampl_enum =
SOC_ENUM_SINGLE(NAU8825_REG_DAC_CTRL1, NAU8825_DAC_OVERSAMPLE_SFT,
ARRAY_SIZE(nau8825_dac_oversampl), nau8825_dac_oversampl);
static const DECLARE_TLV_DB_MINMAX_MUTE(adc_vol_tlv, -10300, 2400);
static const DECLARE_TLV_DB_MINMAX_MUTE(sidetone_vol_tlv, -4200, 0);
static const DECLARE_TLV_DB_MINMAX(dac_vol_tlv, -5400, 0);
static const DECLARE_TLV_DB_MINMAX(fepga_gain_tlv, -100, 3600);
static const DECLARE_TLV_DB_MINMAX_MUTE(crosstalk_vol_tlv, -9600, 2400);
static const struct snd_kcontrol_new nau8825_controls[] = {
SOC_SINGLE_TLV("Mic Volume", NAU8825_REG_ADC_DGAIN_CTRL,
0, 0xff, 0, adc_vol_tlv),
SOC_DOUBLE_TLV("Headphone Bypass Volume", NAU8825_REG_ADC_DGAIN_CTRL,
12, 8, 0x0f, 0, sidetone_vol_tlv),
SOC_DOUBLE_TLV("Headphone Volume", NAU8825_REG_HSVOL_CTRL,
6, 0, 0x3f, 1, dac_vol_tlv),
SOC_SINGLE_TLV("Frontend PGA Volume", NAU8825_REG_POWER_UP_CONTROL,
8, 37, 0, fepga_gain_tlv),
SOC_DOUBLE_TLV("Headphone Crosstalk Volume", NAU8825_REG_DAC_DGAIN_CTRL,
0, 8, 0xff, 0, crosstalk_vol_tlv),
SOC_ENUM("ADC Decimation Rate", nau8825_adc_decimation_enum),
SOC_ENUM("DAC Oversampling Rate", nau8825_dac_oversampl_enum),
};
/* DAC Mux 0x33[9] and 0x34[9] */
static const char * const nau8825_dac_src[] = {
"DACL", "DACR",
};
static SOC_ENUM_SINGLE_DECL(
nau8825_dacl_enum, NAU8825_REG_DACL_CTRL,
NAU8825_DACL_CH_SEL_SFT, nau8825_dac_src);
static SOC_ENUM_SINGLE_DECL(
nau8825_dacr_enum, NAU8825_REG_DACR_CTRL,
NAU8825_DACR_CH_SEL_SFT, nau8825_dac_src);
static const struct snd_kcontrol_new nau8825_dacl_mux =
SOC_DAPM_ENUM("DACL Source", nau8825_dacl_enum);
static const struct snd_kcontrol_new nau8825_dacr_mux =
SOC_DAPM_ENUM("DACR Source", nau8825_dacr_enum);
static const struct snd_soc_dapm_widget nau8825_dapm_widgets[] = {
SND_SOC_DAPM_AIF_OUT("AIFTX", "Capture", 0, NAU8825_REG_I2S_PCM_CTRL2,
15, 1),
SND_SOC_DAPM_INPUT("MIC"),
SND_SOC_DAPM_MICBIAS("MICBIAS", NAU8825_REG_MIC_BIAS, 8, 0),
SND_SOC_DAPM_PGA("Frontend PGA", NAU8825_REG_POWER_UP_CONTROL, 14, 0,
NULL, 0),
SND_SOC_DAPM_ADC_E("ADC", NULL, SND_SOC_NOPM, 0, 0,
nau8825_adc_event, SND_SOC_DAPM_POST_PMU |
SND_SOC_DAPM_POST_PMD),
SND_SOC_DAPM_SUPPLY("ADC Clock", NAU8825_REG_ENA_CTRL, 7, 0, NULL, 0),
SND_SOC_DAPM_SUPPLY("ADC Power", NAU8825_REG_ANALOG_ADC_2, 6, 0, NULL,
0),
/* ADC for button press detection. A dapm supply widget is used to
* prevent dapm_power_widgets keeping the codec at SND_SOC_BIAS_ON
* during suspend.
*/
SND_SOC_DAPM_SUPPLY("SAR", NAU8825_REG_SAR_CTRL,
NAU8825_SAR_ADC_EN_SFT, 0, NULL, 0),
SND_SOC_DAPM_PGA_S("ADACL", 2, NAU8825_REG_RDAC, 12, 0, NULL, 0),
SND_SOC_DAPM_PGA_S("ADACR", 2, NAU8825_REG_RDAC, 13, 0, NULL, 0),
SND_SOC_DAPM_PGA_S("ADACL Clock", 3, NAU8825_REG_RDAC, 8, 0, NULL, 0),
SND_SOC_DAPM_PGA_S("ADACR Clock", 3, NAU8825_REG_RDAC, 9, 0, NULL, 0),
SND_SOC_DAPM_DAC("DDACR", NULL, NAU8825_REG_ENA_CTRL,
NAU8825_ENABLE_DACR_SFT, 0),
SND_SOC_DAPM_DAC("DDACL", NULL, NAU8825_REG_ENA_CTRL,
NAU8825_ENABLE_DACL_SFT, 0),
SND_SOC_DAPM_SUPPLY("DDAC Clock", NAU8825_REG_ENA_CTRL, 6, 0, NULL, 0),
SND_SOC_DAPM_MUX("DACL Mux", SND_SOC_NOPM, 0, 0, &nau8825_dacl_mux),
SND_SOC_DAPM_MUX("DACR Mux", SND_SOC_NOPM, 0, 0, &nau8825_dacr_mux),
SND_SOC_DAPM_PGA_S("HP amp L", 0,
NAU8825_REG_CLASSG_CTRL, 1, 0, NULL, 0),
SND_SOC_DAPM_PGA_S("HP amp R", 0,
NAU8825_REG_CLASSG_CTRL, 2, 0, NULL, 0),
SND_SOC_DAPM_PGA_S("Charge Pump", 1, NAU8825_REG_CHARGE_PUMP, 5, 0,
nau8825_pump_event, SND_SOC_DAPM_POST_PMU |
SND_SOC_DAPM_PRE_PMD),
SND_SOC_DAPM_PGA_S("Output Driver R Stage 1", 4,
NAU8825_REG_POWER_UP_CONTROL, 5, 0, NULL, 0),
SND_SOC_DAPM_PGA_S("Output Driver L Stage 1", 4,
NAU8825_REG_POWER_UP_CONTROL, 4, 0, NULL, 0),
SND_SOC_DAPM_PGA_S("Output Driver R Stage 2", 5,
NAU8825_REG_POWER_UP_CONTROL, 3, 0, NULL, 0),
SND_SOC_DAPM_PGA_S("Output Driver L Stage 2", 5,
NAU8825_REG_POWER_UP_CONTROL, 2, 0, NULL, 0),
SND_SOC_DAPM_PGA_S("Output Driver R Stage 3", 6,
NAU8825_REG_POWER_UP_CONTROL, 1, 0, NULL, 0),
SND_SOC_DAPM_PGA_S("Output Driver L Stage 3", 6,
NAU8825_REG_POWER_UP_CONTROL, 0, 0, NULL, 0),
SND_SOC_DAPM_PGA_S("Output DACL", 7,
NAU8825_REG_CHARGE_PUMP, 8, 1, nau8825_output_dac_event,
SND_SOC_DAPM_PRE_PMU | SND_SOC_DAPM_POST_PMD),
SND_SOC_DAPM_PGA_S("Output DACR", 7,
NAU8825_REG_CHARGE_PUMP, 9, 1, nau8825_output_dac_event,
SND_SOC_DAPM_PRE_PMU | SND_SOC_DAPM_POST_PMD),
/* HPOL/R are ungrounded by disabling 16 Ohm pull-downs on playback */
SND_SOC_DAPM_PGA_S("HPOL Pulldown", 8,
NAU8825_REG_HSD_CTRL, 0, 1, NULL, 0),
SND_SOC_DAPM_PGA_S("HPOR Pulldown", 8,
NAU8825_REG_HSD_CTRL, 1, 1, NULL, 0),
/* High current HPOL/R boost driver */
SND_SOC_DAPM_PGA_S("HP Boost Driver", 9,
NAU8825_REG_BOOST, 9, 1, NULL, 0),
/* Class G operation control*/
SND_SOC_DAPM_PGA_S("Class G", 10,
NAU8825_REG_CLASSG_CTRL, 0, 0, NULL, 0),
SND_SOC_DAPM_OUTPUT("HPOL"),
SND_SOC_DAPM_OUTPUT("HPOR"),
};
static const struct snd_soc_dapm_route nau8825_dapm_routes[] = {
{"Frontend PGA", NULL, "MIC"},
{"ADC", NULL, "Frontend PGA"},
{"ADC", NULL, "ADC Clock"},
{"ADC", NULL, "ADC Power"},
{"AIFTX", NULL, "ADC"},
{"DDACL", NULL, "Playback"},
{"DDACR", NULL, "Playback"},
{"DDACL", NULL, "DDAC Clock"},
{"DDACR", NULL, "DDAC Clock"},
{"DACL Mux", "DACL", "DDACL"},
{"DACL Mux", "DACR", "DDACR"},
{"DACR Mux", "DACL", "DDACL"},
{"DACR Mux", "DACR", "DDACR"},
{"HP amp L", NULL, "DACL Mux"},
{"HP amp R", NULL, "DACR Mux"},
{"Charge Pump", NULL, "HP amp L"},
{"Charge Pump", NULL, "HP amp R"},
{"ADACL", NULL, "Charge Pump"},
{"ADACR", NULL, "Charge Pump"},
{"ADACL Clock", NULL, "ADACL"},
{"ADACR Clock", NULL, "ADACR"},
{"Output Driver L Stage 1", NULL, "ADACL Clock"},
{"Output Driver R Stage 1", NULL, "ADACR Clock"},
{"Output Driver L Stage 2", NULL, "Output Driver L Stage 1"},
{"Output Driver R Stage 2", NULL, "Output Driver R Stage 1"},
{"Output Driver L Stage 3", NULL, "Output Driver L Stage 2"},
{"Output Driver R Stage 3", NULL, "Output Driver R Stage 2"},
{"Output DACL", NULL, "Output Driver L Stage 3"},
{"Output DACR", NULL, "Output Driver R Stage 3"},
{"HPOL Pulldown", NULL, "Output DACL"},
{"HPOR Pulldown", NULL, "Output DACR"},
{"HP Boost Driver", NULL, "HPOL Pulldown"},
{"HP Boost Driver", NULL, "HPOR Pulldown"},
{"Class G", NULL, "HP Boost Driver"},
{"HPOL", NULL, "Class G"},
{"HPOR", NULL, "Class G"},
};
static int nau8825_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 nau8825 *nau8825 = snd_soc_codec_get_drvdata(codec);
unsigned int val_len = 0;
switch (params_width(params)) {
case 16:
val_len |= NAU8825_I2S_DL_16;
break;
case 20:
val_len |= NAU8825_I2S_DL_20;
break;
case 24:
val_len |= NAU8825_I2S_DL_24;
break;
case 32:
val_len |= NAU8825_I2S_DL_32;
break;
default:
return -EINVAL;
}
regmap_update_bits(nau8825->regmap, NAU8825_REG_I2S_PCM_CTRL1,
NAU8825_I2S_DL_MASK, val_len);
return 0;
}
static int nau8825_set_dai_fmt(struct snd_soc_dai *codec_dai, unsigned int fmt)
{
struct snd_soc_codec *codec = codec_dai->codec;
struct nau8825 *nau8825 = snd_soc_codec_get_drvdata(codec);
unsigned int ctrl1_val = 0, ctrl2_val = 0;
switch (fmt & SND_SOC_DAIFMT_MASTER_MASK) {
case SND_SOC_DAIFMT_CBM_CFM:
ctrl2_val |= NAU8825_I2S_MS_MASTER;
break;
case SND_SOC_DAIFMT_CBS_CFS:
break;
default:
return -EINVAL;
}
switch (fmt & SND_SOC_DAIFMT_INV_MASK) {
case SND_SOC_DAIFMT_NB_NF:
break;
case SND_SOC_DAIFMT_IB_NF:
ctrl1_val |= NAU8825_I2S_BP_INV;
break;
default:
return -EINVAL;
}
switch (fmt & SND_SOC_DAIFMT_FORMAT_MASK) {
case SND_SOC_DAIFMT_I2S:
ctrl1_val |= NAU8825_I2S_DF_I2S;
break;
case SND_SOC_DAIFMT_LEFT_J:
ctrl1_val |= NAU8825_I2S_DF_LEFT;
break;
case SND_SOC_DAIFMT_RIGHT_J:
ctrl1_val |= NAU8825_I2S_DF_RIGTH;
break;
case SND_SOC_DAIFMT_DSP_A:
ctrl1_val |= NAU8825_I2S_DF_PCM_AB;
break;
case SND_SOC_DAIFMT_DSP_B:
ctrl1_val |= NAU8825_I2S_DF_PCM_AB;
ctrl1_val |= NAU8825_I2S_PCMB_EN;
break;
default:
return -EINVAL;
}
regmap_update_bits(nau8825->regmap, NAU8825_REG_I2S_PCM_CTRL1,
NAU8825_I2S_DL_MASK | NAU8825_I2S_DF_MASK |
NAU8825_I2S_BP_MASK | NAU8825_I2S_PCMB_MASK,
ctrl1_val);
regmap_update_bits(nau8825->regmap, NAU8825_REG_I2S_PCM_CTRL2,
NAU8825_I2S_MS_MASK, ctrl2_val);
return 0;
}
static const struct snd_soc_dai_ops nau8825_dai_ops = {
.hw_params = nau8825_hw_params,
.set_fmt = nau8825_set_dai_fmt,
};
#define NAU8825_RATES SNDRV_PCM_RATE_8000_192000
#define NAU8825_FORMATS (SNDRV_PCM_FMTBIT_S16_LE | SNDRV_PCM_FMTBIT_S20_3LE \
| SNDRV_PCM_FMTBIT_S24_3LE | SNDRV_PCM_FMTBIT_S32_LE)
static struct snd_soc_dai_driver nau8825_dai = {
.name = "nau8825-hifi",
.playback = {
.stream_name = "Playback",
.channels_min = 1,
.channels_max = 2,
.rates = NAU8825_RATES,
.formats = NAU8825_FORMATS,
},
.capture = {
.stream_name = "Capture",
.channels_min = 1,
.channels_max = 1,
.rates = NAU8825_RATES,
.formats = NAU8825_FORMATS,
},
.ops = &nau8825_dai_ops,
};
/**
* nau8825_enable_jack_detect - Specify a jack for event reporting
*
* @component: component to register the jack with
* @jack: jack to use to report headset and button events on
*
* After this function has been called the headset insert/remove and button
* events will be routed to the given jack. Jack can be null to stop
* reporting.
*/
int nau8825_enable_jack_detect(struct snd_soc_codec *codec,
struct snd_soc_jack *jack)
{
struct nau8825 *nau8825 = snd_soc_codec_get_drvdata(codec);
struct regmap *regmap = nau8825->regmap;
nau8825->jack = jack;
/* Ground HP Outputs[1:0], needed for headset auto detection
* Enable Automatic Mic/Gnd switching reading on insert interrupt[6]
*/
regmap_update_bits(regmap, NAU8825_REG_HSD_CTRL,
NAU8825_HSD_AUTO_MODE | NAU8825_SPKR_DWN1R | NAU8825_SPKR_DWN1L,
NAU8825_HSD_AUTO_MODE | NAU8825_SPKR_DWN1R | NAU8825_SPKR_DWN1L);
regmap_update_bits(regmap, NAU8825_REG_INTERRUPT_MASK,
NAU8825_IRQ_HEADSET_COMPLETE_EN | NAU8825_IRQ_EJECT_EN, 0);
return 0;
}
EXPORT_SYMBOL_GPL(nau8825_enable_jack_detect);
static bool nau8825_is_jack_inserted(struct regmap *regmap)
{
int status;
regmap_read(regmap, NAU8825_REG_I2C_DEVICE_ID, &status);
return !(status & NAU8825_GPIO2JD1);
}
static void nau8825_restart_jack_detection(struct regmap *regmap)
{
/* Chip needs one FSCLK cycle in order to generate interrupts,
* as we cannot guarantee one will be provided by the system. Turning
* master mode on then off enables us to generate that FSCLK cycle
* with a minimum of contention on the clock bus.
*/
regmap_update_bits(regmap, NAU8825_REG_I2S_PCM_CTRL2,
NAU8825_I2S_MS_MASK, NAU8825_I2S_MS_MASTER);
regmap_update_bits(regmap, NAU8825_REG_I2S_PCM_CTRL2,
NAU8825_I2S_MS_MASK, NAU8825_I2S_MS_SLAVE);
/* this will restart the entire jack detection process including MIC/GND
* switching and create interrupts. We have to go from 0 to 1 and back
* to 0 to restart.
*/
regmap_update_bits(regmap, NAU8825_REG_JACK_DET_CTRL,
NAU8825_JACK_DET_RESTART, NAU8825_JACK_DET_RESTART);
regmap_update_bits(regmap, NAU8825_REG_JACK_DET_CTRL,
NAU8825_JACK_DET_RESTART, 0);
}
static void nau8825_eject_jack(struct nau8825 *nau8825)
{
struct snd_soc_dapm_context *dapm = nau8825->dapm;
struct regmap *regmap = nau8825->regmap;
snd_soc_dapm_disable_pin(dapm, "SAR");
snd_soc_dapm_disable_pin(dapm, "MICBIAS");
/* Detach 2kOhm Resistors from MICBIAS to MICGND1/2 */
regmap_update_bits(regmap, NAU8825_REG_MIC_BIAS,
NAU8825_MICBIAS_JKSLV | NAU8825_MICBIAS_JKR2, 0);
/* ground HPL/HPR, MICGRND1/2 */
regmap_update_bits(regmap, NAU8825_REG_HSD_CTRL, 0xf, 0xf);
snd_soc_dapm_sync(dapm);
}
static int nau8825_button_decode(int value)
{
int buttons = 0;
/* The chip supports up to 8 buttons, but ALSA defines only 6 buttons */
if (value & BIT(0))
buttons |= SND_JACK_BTN_0;
if (value & BIT(1))
buttons |= SND_JACK_BTN_1;
if (value & BIT(2))
buttons |= SND_JACK_BTN_2;
if (value & BIT(3))
buttons |= SND_JACK_BTN_3;
if (value & BIT(4))
buttons |= SND_JACK_BTN_4;
if (value & BIT(5))
buttons |= SND_JACK_BTN_5;
return buttons;
}
static int nau8825_jack_insert(struct nau8825 *nau8825)
{
struct regmap *regmap = nau8825->regmap;
struct snd_soc_dapm_context *dapm = nau8825->dapm;
int jack_status_reg, mic_detected;
int type = 0;
regmap_read(regmap, NAU8825_REG_GENERAL_STATUS, &jack_status_reg);
mic_detected = (jack_status_reg >> 10) & 3;
switch (mic_detected) {
case 0:
/* no mic */
type = SND_JACK_HEADPHONE;
break;
case 1:
dev_dbg(nau8825->dev, "OMTP (micgnd1) mic connected\n");
type = SND_JACK_HEADSET;
/* Unground MICGND1 */
regmap_update_bits(regmap, NAU8825_REG_HSD_CTRL, 3 << 2,
1 << 2);
/* Attach 2kOhm Resistor from MICBIAS to MICGND1 */
regmap_update_bits(regmap, NAU8825_REG_MIC_BIAS,
NAU8825_MICBIAS_JKSLV | NAU8825_MICBIAS_JKR2,
NAU8825_MICBIAS_JKR2);
/* Attach SARADC to MICGND1 */
regmap_update_bits(regmap, NAU8825_REG_SAR_CTRL,
NAU8825_SAR_INPUT_MASK,
NAU8825_SAR_INPUT_JKR2);
snd_soc_dapm_force_enable_pin(dapm, "MICBIAS");
snd_soc_dapm_force_enable_pin(dapm, "SAR");
snd_soc_dapm_sync(dapm);
break;
case 2:
case 3:
dev_dbg(nau8825->dev, "CTIA (micgnd2) mic connected\n");
type = SND_JACK_HEADSET;
/* Unground MICGND2 */
regmap_update_bits(regmap, NAU8825_REG_HSD_CTRL, 3 << 2,
2 << 2);
/* Attach 2kOhm Resistor from MICBIAS to MICGND2 */
regmap_update_bits(regmap, NAU8825_REG_MIC_BIAS,
NAU8825_MICBIAS_JKSLV | NAU8825_MICBIAS_JKR2,
NAU8825_MICBIAS_JKSLV);
/* Attach SARADC to MICGND2 */
regmap_update_bits(regmap, NAU8825_REG_SAR_CTRL,
NAU8825_SAR_INPUT_MASK,
NAU8825_SAR_INPUT_JKSLV);
snd_soc_dapm_force_enable_pin(dapm, "MICBIAS");
snd_soc_dapm_force_enable_pin(dapm, "SAR");
snd_soc_dapm_sync(dapm);
break;
}
/* Leaving HPOL/R grounded after jack insert by default. They will be
* ungrounded as part of the widget power up sequence at the beginning
* of playback to reduce pop.
*/
return type;
}
#define NAU8825_BUTTONS (SND_JACK_BTN_0 | SND_JACK_BTN_1 | \
SND_JACK_BTN_2 | SND_JACK_BTN_3)
static irqreturn_t nau8825_interrupt(int irq, void *data)
{
struct nau8825 *nau8825 = (struct nau8825 *)data;
struct regmap *regmap = nau8825->regmap;
int active_irq, clear_irq = 0, event = 0, event_mask = 0;
if (regmap_read(regmap, NAU8825_REG_IRQ_STATUS, &active_irq)) {
dev_err(nau8825->dev, "failed to read irq status\n");
return IRQ_NONE;
}
if ((active_irq & NAU8825_JACK_EJECTION_IRQ_MASK) ==
NAU8825_JACK_EJECTION_DETECTED) {
nau8825_eject_jack(nau8825);
event_mask |= SND_JACK_HEADSET;
clear_irq = NAU8825_JACK_EJECTION_IRQ_MASK;
} else if (active_irq & NAU8825_KEY_SHORT_PRESS_IRQ) {
int key_status;
regmap_read(regmap, NAU8825_REG_INT_CLR_KEY_STATUS,
&key_status);
/* upper 8 bits of the register are for short pressed keys,
* lower 8 bits - for long pressed buttons
*/
nau8825->button_pressed = nau8825_button_decode(
key_status >> 8);
event |= nau8825->button_pressed;
event_mask |= NAU8825_BUTTONS;
clear_irq = NAU8825_KEY_SHORT_PRESS_IRQ;
} else if (active_irq & NAU8825_KEY_RELEASE_IRQ) {
event_mask = NAU8825_BUTTONS;
clear_irq = NAU8825_KEY_RELEASE_IRQ;
} else if (active_irq & NAU8825_HEADSET_COMPLETION_IRQ) {
if (nau8825_is_jack_inserted(regmap)) {
event |= nau8825_jack_insert(nau8825);
} else {
dev_warn(nau8825->dev, "Headset completion IRQ fired but no headset connected\n");
nau8825_eject_jack(nau8825);
}
event_mask |= SND_JACK_HEADSET;
clear_irq = NAU8825_HEADSET_COMPLETION_IRQ;
}
if (!clear_irq)
clear_irq = active_irq;
/* clears the rightmost interruption */
regmap_write(regmap, NAU8825_REG_INT_CLR_KEY_STATUS, clear_irq);
if (event_mask)
snd_soc_jack_report(nau8825->jack, event, event_mask);
return IRQ_HANDLED;
}
static void nau8825_setup_buttons(struct nau8825 *nau8825)
{
struct regmap *regmap = nau8825->regmap;
regmap_update_bits(regmap, NAU8825_REG_SAR_CTRL,
NAU8825_SAR_TRACKING_GAIN_MASK,
nau8825->sar_voltage << NAU8825_SAR_TRACKING_GAIN_SFT);
regmap_update_bits(regmap, NAU8825_REG_SAR_CTRL,
NAU8825_SAR_COMPARE_TIME_MASK,
nau8825->sar_compare_time << NAU8825_SAR_COMPARE_TIME_SFT);
regmap_update_bits(regmap, NAU8825_REG_SAR_CTRL,
NAU8825_SAR_SAMPLING_TIME_MASK,
nau8825->sar_sampling_time << NAU8825_SAR_SAMPLING_TIME_SFT);
regmap_update_bits(regmap, NAU8825_REG_KEYDET_CTRL,
NAU8825_KEYDET_LEVELS_NR_MASK,
(nau8825->sar_threshold_num - 1) << NAU8825_KEYDET_LEVELS_NR_SFT);
regmap_update_bits(regmap, NAU8825_REG_KEYDET_CTRL,
NAU8825_KEYDET_HYSTERESIS_MASK,
nau8825->sar_hysteresis << NAU8825_KEYDET_HYSTERESIS_SFT);
regmap_update_bits(regmap, NAU8825_REG_KEYDET_CTRL,
NAU8825_KEYDET_SHORTKEY_DEBOUNCE_MASK,
nau8825->key_debounce << NAU8825_KEYDET_SHORTKEY_DEBOUNCE_SFT);
regmap_write(regmap, NAU8825_REG_VDET_THRESHOLD_1,
(nau8825->sar_threshold[0] << 8) | nau8825->sar_threshold[1]);
regmap_write(regmap, NAU8825_REG_VDET_THRESHOLD_2,
(nau8825->sar_threshold[2] << 8) | nau8825->sar_threshold[3]);
regmap_write(regmap, NAU8825_REG_VDET_THRESHOLD_3,
(nau8825->sar_threshold[4] << 8) | nau8825->sar_threshold[5]);
regmap_write(regmap, NAU8825_REG_VDET_THRESHOLD_4,
(nau8825->sar_threshold[6] << 8) | nau8825->sar_threshold[7]);
/* Enable short press and release interruptions */
regmap_update_bits(regmap, NAU8825_REG_INTERRUPT_MASK,
NAU8825_IRQ_KEY_SHORT_PRESS_EN | NAU8825_IRQ_KEY_RELEASE_EN,
0);
}
static void nau8825_init_regs(struct nau8825 *nau8825)
{
struct regmap *regmap = nau8825->regmap;
/* Latch IIC LSB value */
regmap_write(regmap, NAU8825_REG_IIC_ADDR_SET, 0x0001);
/* Enable Bias/Vmid */
regmap_update_bits(nau8825->regmap, NAU8825_REG_BIAS_ADJ,
NAU8825_BIAS_VMID, NAU8825_BIAS_VMID);
regmap_update_bits(nau8825->regmap, NAU8825_REG_BOOST,
NAU8825_GLOBAL_BIAS_EN, NAU8825_GLOBAL_BIAS_EN);
/* VMID Tieoff */
regmap_update_bits(regmap, NAU8825_REG_BIAS_ADJ,
NAU8825_BIAS_VMID_SEL_MASK,
nau8825->vref_impedance << NAU8825_BIAS_VMID_SEL_SFT);
/* Disable Boost Driver, Automatic Short circuit protection enable */
regmap_update_bits(regmap, NAU8825_REG_BOOST,
NAU8825_PRECHARGE_DIS | NAU8825_HP_BOOST_DIS |
NAU8825_HP_BOOST_G_DIS | NAU8825_SHORT_SHUTDOWN_EN,
NAU8825_PRECHARGE_DIS | NAU8825_HP_BOOST_DIS |
NAU8825_HP_BOOST_G_DIS | NAU8825_SHORT_SHUTDOWN_EN);
regmap_update_bits(regmap, NAU8825_REG_GPIO12_CTRL,
NAU8825_JKDET_OUTPUT_EN,
nau8825->jkdet_enable ? 0 : NAU8825_JKDET_OUTPUT_EN);
regmap_update_bits(regmap, NAU8825_REG_GPIO12_CTRL,
NAU8825_JKDET_PULL_EN,
nau8825->jkdet_pull_enable ? 0 : NAU8825_JKDET_PULL_EN);
regmap_update_bits(regmap, NAU8825_REG_GPIO12_CTRL,
NAU8825_JKDET_PULL_UP,
nau8825->jkdet_pull_up ? NAU8825_JKDET_PULL_UP : 0);
regmap_update_bits(regmap, NAU8825_REG_JACK_DET_CTRL,
NAU8825_JACK_POLARITY,
/* jkdet_polarity - 1 is for active-low */
nau8825->jkdet_polarity ? 0 : NAU8825_JACK_POLARITY);
regmap_update_bits(regmap, NAU8825_REG_JACK_DET_CTRL,
NAU8825_JACK_INSERT_DEBOUNCE_MASK,
nau8825->jack_insert_debounce << NAU8825_JACK_INSERT_DEBOUNCE_SFT);
regmap_update_bits(regmap, NAU8825_REG_JACK_DET_CTRL,
NAU8825_JACK_EJECT_DEBOUNCE_MASK,
nau8825->jack_eject_debounce << NAU8825_JACK_EJECT_DEBOUNCE_SFT);
/* Mask unneeded IRQs: 1 - disable, 0 - enable */
regmap_update_bits(regmap, NAU8825_REG_INTERRUPT_MASK, 0x7ff, 0x7ff);
regmap_update_bits(regmap, NAU8825_REG_MIC_BIAS,
NAU8825_MICBIAS_VOLTAGE_MASK, nau8825->micbias_voltage);
if (nau8825->sar_threshold_num)
nau8825_setup_buttons(nau8825);
/* Default oversampling/decimations settings are unusable
* (audible hiss). Set it to something better.
*/
regmap_update_bits(regmap, NAU8825_REG_ADC_RATE,
NAU8825_ADC_SYNC_DOWN_MASK, NAU8825_ADC_SYNC_DOWN_128);
regmap_update_bits(regmap, NAU8825_REG_DAC_CTRL1,
NAU8825_DAC_OVERSAMPLE_MASK, NAU8825_DAC_OVERSAMPLE_128);
/* Disable DACR/L power */
regmap_update_bits(regmap, NAU8825_REG_CHARGE_PUMP,
NAU8825_POWER_DOWN_DACR | NAU8825_POWER_DOWN_DACL,
NAU8825_POWER_DOWN_DACR | NAU8825_POWER_DOWN_DACL);
/* Enable TESTDAC. This sets the analog DAC inputs to a '0' input
* signal to avoid any glitches due to power up transients in both
* the analog and digital DAC circuit.
*/
regmap_update_bits(nau8825->regmap, NAU8825_REG_BIAS_ADJ,
NAU8825_BIAS_TESTDAC_EN, NAU8825_BIAS_TESTDAC_EN);
/* CICCLP off */
regmap_update_bits(regmap, NAU8825_REG_DAC_CTRL1,
NAU8825_DAC_CLIP_OFF, NAU8825_DAC_CLIP_OFF);
/* Class AB bias current to 2x, DAC Capacitor enable MSB/LSB */
regmap_update_bits(regmap, NAU8825_REG_ANALOG_CONTROL_2,
NAU8825_HP_NON_CLASSG_CURRENT_2xADJ |
NAU8825_DAC_CAPACITOR_MSB | NAU8825_DAC_CAPACITOR_LSB,
NAU8825_HP_NON_CLASSG_CURRENT_2xADJ |
NAU8825_DAC_CAPACITOR_MSB | NAU8825_DAC_CAPACITOR_LSB);
/* Class G timer 64ms */
regmap_update_bits(regmap, NAU8825_REG_CLASSG_CTRL,
NAU8825_CLASSG_TIMER_MASK,
0x20 << NAU8825_CLASSG_TIMER_SFT);
/* DAC clock delay 2ns, VREF */
regmap_update_bits(regmap, NAU8825_REG_RDAC,
NAU8825_RDAC_CLK_DELAY_MASK | NAU8825_RDAC_VREF_MASK,
(0x2 << NAU8825_RDAC_CLK_DELAY_SFT) |
(0x3 << NAU8825_RDAC_VREF_SFT));
/* Config L/R channel */
regmap_update_bits(nau8825->regmap, NAU8825_REG_DACL_CTRL,
NAU8825_DACL_CH_SEL_MASK, NAU8825_DACL_CH_SEL_L);
regmap_update_bits(nau8825->regmap, NAU8825_REG_DACR_CTRL,
NAU8825_DACL_CH_SEL_MASK, NAU8825_DACL_CH_SEL_R);
}
static const struct regmap_config nau8825_regmap_config = {
.val_bits = 16,
.reg_bits = 16,
.max_register = NAU8825_REG_MAX,
.readable_reg = nau8825_readable_reg,
.writeable_reg = nau8825_writeable_reg,
.volatile_reg = nau8825_volatile_reg,
.cache_type = REGCACHE_RBTREE,
.reg_defaults = nau8825_reg_defaults,
.num_reg_defaults = ARRAY_SIZE(nau8825_reg_defaults),
};
static int nau8825_codec_probe(struct snd_soc_codec *codec)
{
struct nau8825 *nau8825 = snd_soc_codec_get_drvdata(codec);
struct snd_soc_dapm_context *dapm = snd_soc_codec_get_dapm(codec);
nau8825->dapm = dapm;
/* Unmask interruptions. Handler uses dapm object so we can enable
* interruptions only after dapm is fully initialized.
*/
regmap_write(nau8825->regmap, NAU8825_REG_INTERRUPT_DIS_CTRL, 0);
nau8825_restart_jack_detection(nau8825->regmap);
return 0;
}
/**
* nau8825_calc_fll_param - Calculate FLL parameters.
* @fll_in: external clock provided to codec.
* @fs: sampling rate.
* @fll_param: Pointer to structure of FLL parameters.
*
* Calculate FLL parameters to configure codec.
*
* Returns 0 for success or negative error code.
*/
static int nau8825_calc_fll_param(unsigned int fll_in, unsigned int fs,
struct nau8825_fll *fll_param)
{
u64 fvco, fvco_max;
unsigned int fref, i, fvco_sel;
/* Ensure the reference clock frequency (FREF) is <= 13.5MHz by dividing
* freq_in by 1, 2, 4, or 8 using FLL pre-scalar.
* FREF = freq_in / NAU8825_FLL_REF_DIV_MASK
*/
for (i = 0; i < ARRAY_SIZE(fll_pre_scalar); i++) {
fref = fll_in / fll_pre_scalar[i].param;
if (fref <= NAU_FREF_MAX)
break;
}
if (i == ARRAY_SIZE(fll_pre_scalar))
return -EINVAL;
fll_param->clk_ref_div = fll_pre_scalar[i].val;
/* Choose the FLL ratio based on FREF */
for (i = 0; i < ARRAY_SIZE(fll_ratio); i++) {
if (fref >= fll_ratio[i].param)
break;
}
if (i == ARRAY_SIZE(fll_ratio))
return -EINVAL;
fll_param->ratio = fll_ratio[i].val;
/* Calculate the frequency of DCO (FDCO) given freq_out = 256 * Fs.
* FDCO must be within the 90MHz - 124MHz or the FFL cannot be
* guaranteed across the full range of operation.
* FDCO = freq_out * 2 * mclk_src_scaling
*/
fvco_max = 0;
fvco_sel = ARRAY_SIZE(mclk_src_scaling);
for (i = 0; i < ARRAY_SIZE(mclk_src_scaling); i++) {
fvco = 256 * fs * 2 * mclk_src_scaling[i].param;
if (fvco > NAU_FVCO_MIN && fvco < NAU_FVCO_MAX &&
fvco_max < fvco) {
fvco_max = fvco;
fvco_sel = i;
}
}
if (ARRAY_SIZE(mclk_src_scaling) == fvco_sel)
return -EINVAL;
fll_param->mclk_src = mclk_src_scaling[fvco_sel].val;
/* Calculate the FLL 10-bit integer input and the FLL 16-bit fractional
* input based on FDCO, FREF and FLL ratio.
*/
fvco = div_u64(fvco << 16, fref * fll_param->ratio);
fll_param->fll_int = (fvco >> 16) & 0x3FF;
fll_param->fll_frac = fvco & 0xFFFF;
return 0;
}
static void nau8825_fll_apply(struct nau8825 *nau8825,
struct nau8825_fll *fll_param)
{
regmap_update_bits(nau8825->regmap, NAU8825_REG_CLK_DIVIDER,
NAU8825_CLK_SRC_MASK | NAU8825_CLK_MCLK_SRC_MASK,
NAU8825_CLK_SRC_MCLK | fll_param->mclk_src);
regmap_update_bits(nau8825->regmap, NAU8825_REG_FLL1,
NAU8825_FLL_RATIO_MASK, fll_param->ratio);
/* FLL 16-bit fractional input */
regmap_write(nau8825->regmap, NAU8825_REG_FLL2, fll_param->fll_frac);
/* FLL 10-bit integer input */
regmap_update_bits(nau8825->regmap, NAU8825_REG_FLL3,
NAU8825_FLL_INTEGER_MASK, fll_param->fll_int);
/* FLL pre-scaler */
regmap_update_bits(nau8825->regmap, NAU8825_REG_FLL4,
NAU8825_FLL_REF_DIV_MASK, fll_param->clk_ref_div);
/* select divided VCO input */
regmap_update_bits(nau8825->regmap, NAU8825_REG_FLL5,
NAU8825_FLL_CLK_SW_MASK, NAU8825_FLL_CLK_SW_REF);
/* Disable free-running mode */
regmap_update_bits(nau8825->regmap,
NAU8825_REG_FLL6, NAU8825_DCO_EN, 0);
if (fll_param->fll_frac) {
regmap_update_bits(nau8825->regmap, NAU8825_REG_FLL5,
NAU8825_FLL_PDB_DAC_EN | NAU8825_FLL_LOOP_FTR_EN |
NAU8825_FLL_FTR_SW_MASK,
NAU8825_FLL_PDB_DAC_EN | NAU8825_FLL_LOOP_FTR_EN |
NAU8825_FLL_FTR_SW_FILTER);
regmap_update_bits(nau8825->regmap, NAU8825_REG_FLL6,
NAU8825_SDM_EN, NAU8825_SDM_EN);
} else {
regmap_update_bits(nau8825->regmap, NAU8825_REG_FLL5,
NAU8825_FLL_PDB_DAC_EN | NAU8825_FLL_LOOP_FTR_EN |
NAU8825_FLL_FTR_SW_MASK, NAU8825_FLL_FTR_SW_ACCU);
regmap_update_bits(nau8825->regmap,
NAU8825_REG_FLL6, NAU8825_SDM_EN, 0);
}
}
/* freq_out must be 256*Fs in order to achieve the best performance */
static int nau8825_set_pll(struct snd_soc_codec *codec, int pll_id, int source,
unsigned int freq_in, unsigned int freq_out)
{
struct nau8825 *nau8825 = snd_soc_codec_get_drvdata(codec);
struct nau8825_fll fll_param;
int ret, fs;
fs = freq_out / 256;
ret = nau8825_calc_fll_param(freq_in, fs, &fll_param);
if (ret < 0) {
dev_err(codec->dev, "Unsupported input clock %d\n", freq_in);
return ret;
}
dev_dbg(codec->dev, "mclk_src=%x ratio=%x fll_frac=%x fll_int=%x clk_ref_div=%x\n",
fll_param.mclk_src, fll_param.ratio, fll_param.fll_frac,
fll_param.fll_int, fll_param.clk_ref_div);
nau8825_fll_apply(nau8825, &fll_param);
mdelay(2);
regmap_update_bits(nau8825->regmap, NAU8825_REG_CLK_DIVIDER,
NAU8825_CLK_SRC_MASK, NAU8825_CLK_SRC_VCO);
return 0;
}
static int nau8825_mclk_prepare(struct nau8825 *nau8825, unsigned int freq)
{
int ret = 0;
nau8825->mclk = devm_clk_get(nau8825->dev, "mclk");
if (IS_ERR(nau8825->mclk)) {
dev_info(nau8825->dev, "No 'mclk' clock found, assume MCLK is managed externally");
return 0;
}
if (!nau8825->mclk_freq) {
ret = clk_prepare_enable(nau8825->mclk);
if (ret) {
dev_err(nau8825->dev, "Unable to prepare codec mclk\n");
return ret;
}
}
if (nau8825->mclk_freq != freq) {
freq = clk_round_rate(nau8825->mclk, freq);
ret = clk_set_rate(nau8825->mclk, freq);
if (ret) {
dev_err(nau8825->dev, "Unable to set mclk rate\n");
return ret;
}
nau8825->mclk_freq = freq;
}
return 0;
}
static int nau8825_configure_sysclk(struct nau8825 *nau8825, int clk_id,
unsigned int freq)
{
struct regmap *regmap = nau8825->regmap;
int ret;
switch (clk_id) {
case NAU8825_CLK_MCLK:
regmap_update_bits(regmap, NAU8825_REG_CLK_DIVIDER,
NAU8825_CLK_SRC_MASK, NAU8825_CLK_SRC_MCLK);
regmap_update_bits(regmap, NAU8825_REG_FLL6, NAU8825_DCO_EN, 0);
/* MCLK not changed by clock tree */
regmap_update_bits(regmap, NAU8825_REG_CLK_DIVIDER,
NAU8825_CLK_MCLK_SRC_MASK, 0);
ret = nau8825_mclk_prepare(nau8825, freq);
if (ret)
return ret;
break;
case NAU8825_CLK_INTERNAL:
regmap_update_bits(regmap, NAU8825_REG_FLL6, NAU8825_DCO_EN,
NAU8825_DCO_EN);
regmap_update_bits(regmap, NAU8825_REG_CLK_DIVIDER,
NAU8825_CLK_SRC_MASK, NAU8825_CLK_SRC_VCO);
/* Decrease the VCO frequency for power saving */
regmap_update_bits(regmap, NAU8825_REG_CLK_DIVIDER,
NAU8825_CLK_MCLK_SRC_MASK, 0xf);
regmap_update_bits(regmap, NAU8825_REG_FLL1,
NAU8825_FLL_RATIO_MASK, 0x10);
regmap_update_bits(regmap, NAU8825_REG_FLL6,
NAU8825_SDM_EN, NAU8825_SDM_EN);
if (nau8825->mclk_freq) {
clk_disable_unprepare(nau8825->mclk);
nau8825->mclk_freq = 0;
}
break;
case NAU8825_CLK_FLL_MCLK:
regmap_update_bits(regmap, NAU8825_REG_FLL3,
NAU8825_FLL_CLK_SRC_MASK, NAU8825_FLL_CLK_SRC_MCLK);
ret = nau8825_mclk_prepare(nau8825, freq);
if (ret)
return ret;
break;
case NAU8825_CLK_FLL_BLK:
regmap_update_bits(regmap, NAU8825_REG_FLL3,
NAU8825_FLL_CLK_SRC_MASK, NAU8825_FLL_CLK_SRC_BLK);
if (nau8825->mclk_freq) {
clk_disable_unprepare(nau8825->mclk);
nau8825->mclk_freq = 0;
}
break;
case NAU8825_CLK_FLL_FS:
regmap_update_bits(regmap, NAU8825_REG_FLL3,
NAU8825_FLL_CLK_SRC_MASK, NAU8825_FLL_CLK_SRC_FS);
if (nau8825->mclk_freq) {
clk_disable_unprepare(nau8825->mclk);
nau8825->mclk_freq = 0;
}
break;
default:
dev_err(nau8825->dev, "Invalid clock id (%d)\n", clk_id);
return -EINVAL;
}
dev_dbg(nau8825->dev, "Sysclk is %dHz and clock id is %d\n", freq,
clk_id);
return 0;
}
static int nau8825_set_sysclk(struct snd_soc_codec *codec, int clk_id,
int source, unsigned int freq, int dir)
{
struct nau8825 *nau8825 = snd_soc_codec_get_drvdata(codec);
return nau8825_configure_sysclk(nau8825, clk_id, freq);
}
static int nau8825_set_bias_level(struct snd_soc_codec *codec,
enum snd_soc_bias_level level)
{
struct nau8825 *nau8825 = snd_soc_codec_get_drvdata(codec);
int ret;
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) {
if (nau8825->mclk_freq) {
ret = clk_prepare_enable(nau8825->mclk);
if (ret) {
dev_err(nau8825->dev, "Unable to prepare codec mclk\n");
return ret;
}
}
}
break;
case SND_SOC_BIAS_OFF:
if (nau8825->mclk_freq)
clk_disable_unprepare(nau8825->mclk);
break;
}
return 0;
}
#ifdef CONFIG_PM
static int nau8825_suspend(struct snd_soc_codec *codec)
{
struct nau8825 *nau8825 = snd_soc_codec_get_drvdata(codec);
disable_irq(nau8825->irq);
regcache_cache_only(nau8825->regmap, true);
regcache_mark_dirty(nau8825->regmap);
return 0;
}
static int nau8825_resume(struct snd_soc_codec *codec)
{
struct nau8825 *nau8825 = snd_soc_codec_get_drvdata(codec);
/* The chip may lose power and reset in S3. regcache_sync restores
* register values including configurations for sysclk, irq, and
* jack/button detection.
*/
regcache_cache_only(nau8825->regmap, false);
regcache_sync(nau8825->regmap);
/* Check the jack plug status directly. If the headset is unplugged
* during S3 when the chip has no power, there will be no jack
* detection irq even after the nau8825_restart_jack_detection below,
* because the chip just thinks no headset has ever been plugged in.
*/
if (!nau8825_is_jack_inserted(nau8825->regmap)) {
nau8825_eject_jack(nau8825);
snd_soc_jack_report(nau8825->jack, 0, SND_JACK_HEADSET);
}
enable_irq(nau8825->irq);
/* Run jack detection to check the type (OMTP or CTIA) of the headset
* if there is one. This handles the case where a different type of
* headset is plugged in during S3. This triggers an IRQ iff a headset
* is already plugged in.
*/
nau8825_restart_jack_detection(nau8825->regmap);
return 0;
}
#else
#define nau8825_suspend NULL
#define nau8825_resume NULL
#endif
static struct snd_soc_codec_driver nau8825_codec_driver = {
.probe = nau8825_codec_probe,
.set_sysclk = nau8825_set_sysclk,
.set_pll = nau8825_set_pll,
.set_bias_level = nau8825_set_bias_level,
.suspend_bias_off = true,
.suspend = nau8825_suspend,
.resume = nau8825_resume,
.controls = nau8825_controls,
.num_controls = ARRAY_SIZE(nau8825_controls),
.dapm_widgets = nau8825_dapm_widgets,
.num_dapm_widgets = ARRAY_SIZE(nau8825_dapm_widgets),
.dapm_routes = nau8825_dapm_routes,
.num_dapm_routes = ARRAY_SIZE(nau8825_dapm_routes),
};
static void nau8825_reset_chip(struct regmap *regmap)
{
regmap_write(regmap, NAU8825_REG_RESET, 0x00);
regmap_write(regmap, NAU8825_REG_RESET, 0x00);
}
static void nau8825_print_device_properties(struct nau8825 *nau8825)
{
int i;
struct device *dev = nau8825->dev;
dev_dbg(dev, "jkdet-enable: %d\n", nau8825->jkdet_enable);
dev_dbg(dev, "jkdet-pull-enable: %d\n", nau8825->jkdet_pull_enable);
dev_dbg(dev, "jkdet-pull-up: %d\n", nau8825->jkdet_pull_up);
dev_dbg(dev, "jkdet-polarity: %d\n", nau8825->jkdet_polarity);
dev_dbg(dev, "micbias-voltage: %d\n", nau8825->micbias_voltage);
dev_dbg(dev, "vref-impedance: %d\n", nau8825->vref_impedance);
dev_dbg(dev, "sar-threshold-num: %d\n", nau8825->sar_threshold_num);
for (i = 0; i < nau8825->sar_threshold_num; i++)
dev_dbg(dev, "sar-threshold[%d]=%d\n", i,
nau8825->sar_threshold[i]);
dev_dbg(dev, "sar-hysteresis: %d\n", nau8825->sar_hysteresis);
dev_dbg(dev, "sar-voltage: %d\n", nau8825->sar_voltage);
dev_dbg(dev, "sar-compare-time: %d\n", nau8825->sar_compare_time);
dev_dbg(dev, "sar-sampling-time: %d\n", nau8825->sar_sampling_time);
dev_dbg(dev, "short-key-debounce: %d\n", nau8825->key_debounce);
dev_dbg(dev, "jack-insert-debounce: %d\n",
nau8825->jack_insert_debounce);
dev_dbg(dev, "jack-eject-debounce: %d\n",
nau8825->jack_eject_debounce);
}
static int nau8825_read_device_properties(struct device *dev,
struct nau8825 *nau8825) {
nau8825->jkdet_enable = device_property_read_bool(dev,
"nuvoton,jkdet-enable");
nau8825->jkdet_pull_enable = device_property_read_bool(dev,
"nuvoton,jkdet-pull-enable");
nau8825->jkdet_pull_up = device_property_read_bool(dev,
"nuvoton,jkdet-pull-up");
device_property_read_u32(dev, "nuvoton,jkdet-polarity",
&nau8825->jkdet_polarity);
device_property_read_u32(dev, "nuvoton,micbias-voltage",
&nau8825->micbias_voltage);
device_property_read_u32(dev, "nuvoton,vref-impedance",
&nau8825->vref_impedance);
device_property_read_u32(dev, "nuvoton,sar-threshold-num",
&nau8825->sar_threshold_num);
device_property_read_u32_array(dev, "nuvoton,sar-threshold",
nau8825->sar_threshold, nau8825->sar_threshold_num);
device_property_read_u32(dev, "nuvoton,sar-hysteresis",
&nau8825->sar_hysteresis);
device_property_read_u32(dev, "nuvoton,sar-voltage",
&nau8825->sar_voltage);
device_property_read_u32(dev, "nuvoton,sar-compare-time",
&nau8825->sar_compare_time);
device_property_read_u32(dev, "nuvoton,sar-sampling-time",
&nau8825->sar_sampling_time);
device_property_read_u32(dev, "nuvoton,short-key-debounce",
&nau8825->key_debounce);
device_property_read_u32(dev, "nuvoton,jack-insert-debounce",
&nau8825->jack_insert_debounce);
device_property_read_u32(dev, "nuvoton,jack-eject-debounce",
&nau8825->jack_eject_debounce);
nau8825->mclk = devm_clk_get(dev, "mclk");
if (PTR_ERR(nau8825->mclk) == -EPROBE_DEFER) {
return -EPROBE_DEFER;
} else if (PTR_ERR(nau8825->mclk) == -ENOENT) {
/* The MCLK is managed externally or not used at all */
nau8825->mclk = NULL;
dev_info(dev, "No 'mclk' clock found, assume MCLK is managed externally");
} else if (IS_ERR(nau8825->mclk)) {
return -EINVAL;
}
return 0;
}
static int nau8825_setup_irq(struct nau8825 *nau8825)
{
struct regmap *regmap = nau8825->regmap;
int ret;
/* IRQ Output Enable */
regmap_update_bits(regmap, NAU8825_REG_INTERRUPT_MASK,
NAU8825_IRQ_OUTPUT_EN, NAU8825_IRQ_OUTPUT_EN);
/* Enable internal VCO needed for interruptions */
nau8825_configure_sysclk(nau8825, NAU8825_CLK_INTERNAL, 0);
/* Enable ADC needed for interrupts */
regmap_update_bits(regmap, NAU8825_REG_ENA_CTRL,
NAU8825_ENABLE_ADC, NAU8825_ENABLE_ADC);
ret = devm_request_threaded_irq(nau8825->dev, nau8825->irq, NULL,
nau8825_interrupt, IRQF_TRIGGER_LOW | IRQF_ONESHOT,
"nau8825", nau8825);
if (ret) {
dev_err(nau8825->dev, "Cannot request irq %d (%d)\n",
nau8825->irq, ret);
return ret;
}
return 0;
}
static int nau8825_i2c_probe(struct i2c_client *i2c,
const struct i2c_device_id *id)
{
struct device *dev = &i2c->dev;
struct nau8825 *nau8825 = dev_get_platdata(&i2c->dev);
int ret, value;
if (!nau8825) {
nau8825 = devm_kzalloc(dev, sizeof(*nau8825), GFP_KERNEL);
if (!nau8825)
return -ENOMEM;
ret = nau8825_read_device_properties(dev, nau8825);
if (ret)
return ret;
}
i2c_set_clientdata(i2c, nau8825);
nau8825->regmap = devm_regmap_init_i2c(i2c, &nau8825_regmap_config);
if (IS_ERR(nau8825->regmap))
return PTR_ERR(nau8825->regmap);
nau8825->dev = dev;
nau8825->irq = i2c->irq;
nau8825_print_device_properties(nau8825);
nau8825_reset_chip(nau8825->regmap);
ret = regmap_read(nau8825->regmap, NAU8825_REG_I2C_DEVICE_ID, &value);
if (ret < 0) {
dev_err(dev, "Failed to read device id from the NAU8825: %d\n",
ret);
return ret;
}
if ((value & NAU8825_SOFTWARE_ID_MASK) !=
NAU8825_SOFTWARE_ID_NAU8825) {
dev_err(dev, "Not a NAU8825 chip\n");
return -ENODEV;
}
nau8825_init_regs(nau8825);
if (i2c->irq)
nau8825_setup_irq(nau8825);
return snd_soc_register_codec(&i2c->dev, &nau8825_codec_driver,
&nau8825_dai, 1);
}
static int nau8825_i2c_remove(struct i2c_client *client)
{
snd_soc_unregister_codec(&client->dev);
return 0;
}
static const struct i2c_device_id nau8825_i2c_ids[] = {
{ "nau8825", 0 },
{ }
};
MODULE_DEVICE_TABLE(i2c, nau8825_i2c_ids);
#ifdef CONFIG_OF
static const struct of_device_id nau8825_of_ids[] = {
{ .compatible = "nuvoton,nau8825", },
{}
};
MODULE_DEVICE_TABLE(of, nau8825_of_ids);
#endif
#ifdef CONFIG_ACPI
static const struct acpi_device_id nau8825_acpi_match[] = {
{ "10508825", 0 },
{},
};
MODULE_DEVICE_TABLE(acpi, nau8825_acpi_match);
#endif
static struct i2c_driver nau8825_driver = {
.driver = {
.name = "nau8825",
.of_match_table = of_match_ptr(nau8825_of_ids),
.acpi_match_table = ACPI_PTR(nau8825_acpi_match),
},
.probe = nau8825_i2c_probe,
.remove = nau8825_i2c_remove,
.id_table = nau8825_i2c_ids,
};
module_i2c_driver(nau8825_driver);
MODULE_DESCRIPTION("ASoC nau8825 driver");
MODULE_AUTHOR("Anatol Pomozov <anatol@chromium.org>");
MODULE_LICENSE("GPL");
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