--- /dev/null
+/*
+ * 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 100000000
+#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_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:
+ case NAU8825_REG_CLK_DIVIDER ... 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_ENA_CTRL:
+ case NAU8825_REG_CLK_DIVIDER ... 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_pump_event(struct snd_soc_dapm_widget *w,
+ struct snd_kcontrol *kcontrol, int event)
+{
+ switch (event) {
+ case SND_SOC_DAPM_POST_PMU:
+ /* Prevent startup click by letting charge pump to ramp up */
+ msleep(10);
+ 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("ADC", NULL, NAU8825_REG_ENA_CTRL, 8, 0),
+ 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 */
+ SND_SOC_DAPM_ADC("SAR", NULL, NAU8825_REG_SAR_CTRL,
+ NAU8825_SAR_ADC_EN_SFT, 0),
+
+ SND_SOC_DAPM_DAC("ADACL", NULL, NAU8825_REG_RDAC, 12, 0),
+ SND_SOC_DAPM_DAC("ADACR", NULL, NAU8825_REG_RDAC, 13, 0),
+ SND_SOC_DAPM_SUPPLY("ADACL Clock", NAU8825_REG_RDAC, 8, 0, NULL, 0),
+ SND_SOC_DAPM_SUPPLY("ADACR Clock", 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("HP amp L", NAU8825_REG_CLASSG_CTRL, 1, 0, NULL, 0),
+ SND_SOC_DAPM_PGA("HP amp R", NAU8825_REG_CLASSG_CTRL, 2, 0, NULL, 0),
+ SND_SOC_DAPM_SUPPLY("HP amp power", NAU8825_REG_CLASSG_CTRL, 0, 0, NULL,
+ 0),
+
+ SND_SOC_DAPM_SUPPLY("Charge Pump", NAU8825_REG_CHARGE_PUMP, 5, 0,
+ nau8825_pump_event, SND_SOC_DAPM_POST_PMU),
+
+ SND_SOC_DAPM_PGA("Output Driver R Stage 1",
+ NAU8825_REG_POWER_UP_CONTROL, 5, 0, NULL, 0),
+ SND_SOC_DAPM_PGA("Output Driver L Stage 1",
+ NAU8825_REG_POWER_UP_CONTROL, 4, 0, NULL, 0),
+ SND_SOC_DAPM_PGA("Output Driver R Stage 2",
+ NAU8825_REG_POWER_UP_CONTROL, 3, 0, NULL, 0),
+ SND_SOC_DAPM_PGA("Output Driver L Stage 2",
+ NAU8825_REG_POWER_UP_CONTROL, 2, 0, NULL, 0),
+ SND_SOC_DAPM_PGA_S("Output Driver R Stage 3", 1,
+ NAU8825_REG_POWER_UP_CONTROL, 1, 0, NULL, 0),
+ SND_SOC_DAPM_PGA_S("Output Driver L Stage 3", 1,
+ NAU8825_REG_POWER_UP_CONTROL, 0, 0, NULL, 0),
+
+ SND_SOC_DAPM_PGA_S("Output DACL", 2, NAU8825_REG_CHARGE_PUMP, 8, 1, NULL, 0),
+ SND_SOC_DAPM_PGA_S("Output DACR", 2, NAU8825_REG_CHARGE_PUMP, 9, 1, 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"},
+ {"HP amp L", NULL, "HP amp power"},
+ {"HP amp R", NULL, "HP amp power"},
+ {"ADACL", NULL, "HP amp L"},
+ {"ADACR", NULL, "HP amp R"},
+ {"ADACL", NULL, "ADACL Clock"},
+ {"ADACR", NULL, "ADACR Clock"},
+ {"Output Driver L Stage 1", NULL, "ADACL"},
+ {"Output Driver R Stage 1", NULL, "ADACR"},
+ {"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", NULL, "Output DACL"},
+ {"HPOR", NULL, "Output DACR"},
+ {"HPOL", NULL, "Charge Pump"},
+ {"HPOR", NULL, "Charge Pump"},
+};
+
+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)
+{
+ /* 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;
+ }
+
+ if (type & SND_JACK_HEADPHONE) {
+ /* Unground HPL/R */
+ regmap_update_bits(regmap, NAU8825_REG_HSD_CTRL, 0x3, 0);
+ }
+
+ 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;
+
+ regmap_read(regmap, NAU8825_REG_IRQ_STATUS, &active_irq);
+
+ 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;
+
+ /* 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_G_DIS |
+ NAU8825_SHORT_SHUTDOWN_EN,
+ NAU8825_PRECHARGE_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);
+}
+
+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;
+
+ /* The interrupt clock is gated by x1[10:8],
+ * one of them needs to be enabled all the time for
+ * interrupts to happen.
+ */
+ snd_soc_dapm_force_enable_pin(dapm, "DDACR");
+ snd_soc_dapm_sync(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;
+ unsigned int fref, i;
+
+ /* 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 - 100MHz or the FFL cannot be
+ * guaranteed across the full range of operation.
+ * FDCO = freq_out * 2 * mclk_src_scaling
+ */
+ for (i = 0; i < ARRAY_SIZE(mclk_src_scaling); i++) {
+ fvco = 256 * fs * 2 * mclk_src_scaling[i].param;
+ if (NAU_FVCO_MIN < fvco && fvco < NAU_FVCO_MAX)
+ break;
+ }
+ if (i == ARRAY_SIZE(mclk_src_scaling))
+ return -EINVAL;
+ fll_param->mclk_src = mclk_src_scaling[i].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_MCLK_SRC_MASK, 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_FILTER_SW_MASK, 0x0000);
+ /* FLL sigma delta modulator enable */
+ regmap_update_bits(nau8825->regmap, NAU8825_REG_FLL6,
+ NAU8825_SDM_EN_MASK, NAU8825_SDM_EN);
+}
+
+/* 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_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);
+
+ /* We selected MCLK source but the clock itself managed externally */
+ if (!nau8825->mclk)
+ break;
+
+ 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) {
+ 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;
+ }
+ }
+
+ 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);
+
+ 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;
+ }
+ }
+
+ ret = regcache_sync(nau8825->regmap);
+ if (ret) {
+ dev_err(codec->dev,
+ "Failed to sync cache: %d\n", ret);
+ return ret;
+ }
+ }
+
+ break;
+
+ case SND_SOC_BIAS_OFF:
+ if (nau8825->mclk_freq)
+ clk_disable_unprepare(nau8825->mclk);
+
+ regcache_mark_dirty(nau8825->regmap);
+ break;
+ }
+ return 0;
+}
+
+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,
+
+ .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 DDACR needed for interrupts
+ * It is the same as force_enable_pin("DDACR") we do later
+ */
+ regmap_update_bits(regmap, NAU8825_REG_ENA_CTRL,
+ NAU8825_ENABLE_DACR, NAU8825_ENABLE_DACR);
+
+ /* 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);
+
+ 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 },
+ { }
+};
+
+#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");
projects / karo-tx-linux.git / blobdiff