new file mode 100644
@@ -0,0 +1,16 @@
+NAU85L40 audio CODEC
+
+This device supports I2C only.
+
+Required properties:
+
+ - compatible : "nuvoton,nau8540"
+
+ - reg : the I2C address of the device.
+
+Example:
+
+codec: nau8540@1c {
+ compatible = "nuvoton,nau8540";
+ reg = <0x1c>;
+};
@@ -95,6 +95,7 @@ config SND_SOC_ALL_CODECS
select SND_SOC_MAX9877 if I2C
select SND_SOC_MC13783 if MFD_MC13XXX
select SND_SOC_ML26124 if I2C
+ select SND_SOC_NAU8540 if I2C
select SND_SOC_NAU8810 if I2C
select SND_SOC_NAU8825 if I2C
select SND_SOC_HDMI_CODEC
@@ -1105,6 +1106,10 @@ config SND_SOC_MC13783
config SND_SOC_ML26124
tristate
+config SND_SOC_NAU8540
+ tristate "Nuvoton Technology Corporation NAU85L40 CODEC"
+ depends on I2C
+
config SND_SOC_NAU8810
tristate "Nuvoton Technology Corporation NAU88C10 CODEC"
depends on I2C
@@ -90,6 +90,7 @@ snd-soc-mc13783-objs := mc13783.o
snd-soc-ml26124-objs := ml26124.o
snd-soc-msm8916-analog-objs := msm8916-wcd-analog.o
snd-soc-msm8916-digital-objs := msm8916-wcd-digital.o
+snd-soc-nau8540-objs := nau8540.o
snd-soc-nau8810-objs := nau8810.o
snd-soc-nau8825-objs := nau8825.o
snd-soc-hdmi-codec-objs := hdmi-codec.o
@@ -318,6 +319,7 @@ obj-$(CONFIG_SND_SOC_MC13783) += snd-soc-mc13783.o
obj-$(CONFIG_SND_SOC_ML26124) += snd-soc-ml26124.o
obj-$(CONFIG_SND_SOC_MSM8916_WCD_ANALOG) +=snd-soc-msm8916-analog.o
obj-$(CONFIG_SND_SOC_MSM8916_WCD_DIGITAL) +=snd-soc-msm8916-digital.o
+obj-$(CONFIG_SND_SOC_NAU8540) += snd-soc-nau8540.o
obj-$(CONFIG_SND_SOC_NAU8810) += snd-soc-nau8810.o
obj-$(CONFIG_SND_SOC_NAU8825) += snd-soc-nau8825.o
obj-$(CONFIG_SND_SOC_HDMI_CODEC) += snd-soc-hdmi-codec.o
new file mode 100644
@@ -0,0 +1,835 @@
+/*
+ * NAU85L40 ALSA SoC audio driver
+ *
+ * Copyright 2016 Nuvoton Technology Corp.
+ * Author: John Hsu <KCHSU0@nuvoton.com>
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License version 2 as
+ * published by the Free Software Foundation.
+ */
+
+#include <linux/module.h>
+#include <linux/moduleparam.h>
+#include <linux/init.h>
+#include <linux/delay.h>
+#include <linux/pm.h>
+#include <linux/i2c.h>
+#include <linux/regmap.h>
+#include <linux/regulator/consumer.h>
+#include <linux/spi/spi.h>
+#include <linux/slab.h>
+#include <linux/of_device.h>
+#include <sound/core.h>
+#include <sound/pcm.h>
+#include <sound/pcm_params.h>
+#include <sound/soc.h>
+#include <sound/soc-dapm.h>
+#include <sound/initval.h>
+#include <sound/tlv.h>
+#include "nau8540.h"
+
+
+#define NAU_FREF_MAX 13500000
+#define NAU_FVCO_MAX 100000000
+#define NAU_FVCO_MIN 90000000
+
+/* the maximum frequency of CLK_ADC */
+#define CLK_ADC_MAX 6144000
+
+/* scaling for mclk from sysclk_src output */
+static const struct nau8540_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 },
+};
+
+/* ratio for input clk freq */
+static const struct nau8540_fll_attr fll_ratio[] = {
+ { 512000, 0x01 },
+ { 256000, 0x02 },
+ { 128000, 0x04 },
+ { 64000, 0x08 },
+ { 32000, 0x10 },
+ { 8000, 0x20 },
+ { 4000, 0x40 },
+};
+
+static const struct nau8540_fll_attr fll_pre_scalar[] = {
+ { 1, 0x0 },
+ { 2, 0x1 },
+ { 4, 0x2 },
+ { 8, 0x3 },
+};
+
+/* over sampling rate */
+static const struct nau8540_osr_attr osr_adc_sel[] = {
+ { 32, 3 }, /* OSR 32, SRC 1/8 */
+ { 64, 2 }, /* OSR 64, SRC 1/4 */
+ { 128, 1 }, /* OSR 128, SRC 1/2 */
+ { 256, 0 }, /* OSR 256, SRC 1 */
+};
+
+static const struct reg_default nau8540_reg_defaults[] = {
+ {NAU8540_REG_POWER_MANAGEMENT, 0x0000},
+ {NAU8540_REG_CLOCK_CTRL, 0x0000},
+ {NAU8540_REG_CLOCK_SRC, 0x0000},
+ {NAU8540_REG_FLL1, 0x0001},
+ {NAU8540_REG_FLL2, 0x3126},
+ {NAU8540_REG_FLL3, 0x0008},
+ {NAU8540_REG_FLL4, 0x0010},
+ {NAU8540_REG_FLL5, 0xC000},
+ {NAU8540_REG_FLL6, 0x6000},
+ {NAU8540_REG_FLL_VCO_RSV, 0xF13C},
+ {NAU8540_REG_PCM_CTRL0, 0x000B},
+ {NAU8540_REG_PCM_CTRL1, 0x3010},
+ {NAU8540_REG_PCM_CTRL2, 0x0800},
+ {NAU8540_REG_PCM_CTRL3, 0x0000},
+ {NAU8540_REG_PCM_CTRL4, 0x000F},
+ {NAU8540_REG_ALC_CONTROL_1, 0x0000},
+ {NAU8540_REG_ALC_CONTROL_2, 0x700B},
+ {NAU8540_REG_ALC_CONTROL_3, 0x0022},
+ {NAU8540_REG_ALC_CONTROL_4, 0x1010},
+ {NAU8540_REG_ALC_CONTROL_5, 0x1010},
+ {NAU8540_REG_NOTCH_FIL1_CH1, 0x0000},
+ {NAU8540_REG_NOTCH_FIL2_CH1, 0x0000},
+ {NAU8540_REG_NOTCH_FIL1_CH2, 0x0000},
+ {NAU8540_REG_NOTCH_FIL2_CH2, 0x0000},
+ {NAU8540_REG_NOTCH_FIL1_CH3, 0x0000},
+ {NAU8540_REG_NOTCH_FIL2_CH3, 0x0000},
+ {NAU8540_REG_NOTCH_FIL1_CH4, 0x0000},
+ {NAU8540_REG_NOTCH_FIL2_CH4, 0x0000},
+ {NAU8540_REG_HPF_FILTER_CH12, 0x0000},
+ {NAU8540_REG_HPF_FILTER_CH34, 0x0000},
+ {NAU8540_REG_ADC_SAMPLE_RATE, 0x0002},
+ {NAU8540_REG_DIGITAL_GAIN_CH1, 0x0400},
+ {NAU8540_REG_DIGITAL_GAIN_CH2, 0x0400},
+ {NAU8540_REG_DIGITAL_GAIN_CH3, 0x0400},
+ {NAU8540_REG_DIGITAL_GAIN_CH4, 0x0400},
+ {NAU8540_REG_DIGITAL_MUX, 0x00E4},
+ {NAU8540_REG_GPIO_CTRL, 0x0000},
+ {NAU8540_REG_MISC_CTRL, 0x0000},
+ {NAU8540_REG_I2C_CTRL, 0xEFFF},
+ {NAU8540_REG_VMID_CTRL, 0x0000},
+ {NAU8540_REG_MUTE, 0x0000},
+ {NAU8540_REG_ANALOG_ADC1, 0x0011},
+ {NAU8540_REG_ANALOG_ADC2, 0x0020},
+ {NAU8540_REG_ANALOG_PWR, 0x0000},
+ {NAU8540_REG_MIC_BIAS, 0x0004},
+ {NAU8540_REG_REFERENCE, 0x0000},
+ {NAU8540_REG_FEPGA1, 0x0000},
+ {NAU8540_REG_FEPGA2, 0x0000},
+ {NAU8540_REG_FEPGA3, 0x0101},
+ {NAU8540_REG_FEPGA4, 0x0101},
+ {NAU8540_REG_PWR, 0x0000},
+};
+
+static bool nau8540_readable_reg(struct device *dev, unsigned int reg)
+{
+ switch (reg) {
+ case NAU8540_REG_POWER_MANAGEMENT ... NAU8540_REG_FLL_VCO_RSV:
+ case NAU8540_REG_PCM_CTRL0 ... NAU8540_REG_PCM_CTRL4:
+ case NAU8540_REG_ALC_CONTROL_1 ... NAU8540_REG_ALC_CONTROL_5:
+ case NAU8540_REG_ALC_GAIN_CH12 ... NAU8540_REG_ADC_SAMPLE_RATE:
+ case NAU8540_REG_DIGITAL_GAIN_CH1 ... NAU8540_REG_DIGITAL_MUX:
+ case NAU8540_REG_P2P_CH1 ... NAU8540_REG_I2C_CTRL:
+ case NAU8540_REG_I2C_DEVICE_ID:
+ case NAU8540_REG_VMID_CTRL ... NAU8540_REG_MUTE:
+ case NAU8540_REG_ANALOG_ADC1 ... NAU8540_REG_PWR:
+ return true;
+ default:
+ return false;
+ }
+
+}
+
+static bool nau8540_writeable_reg(struct device *dev, unsigned int reg)
+{
+ switch (reg) {
+ case NAU8540_REG_SW_RESET ... NAU8540_REG_FLL_VCO_RSV:
+ case NAU8540_REG_PCM_CTRL0 ... NAU8540_REG_PCM_CTRL4:
+ case NAU8540_REG_ALC_CONTROL_1 ... NAU8540_REG_ALC_CONTROL_5:
+ case NAU8540_REG_NOTCH_FIL1_CH1 ... NAU8540_REG_ADC_SAMPLE_RATE:
+ case NAU8540_REG_DIGITAL_GAIN_CH1 ... NAU8540_REG_DIGITAL_MUX:
+ case NAU8540_REG_GPIO_CTRL ... NAU8540_REG_I2C_CTRL:
+ case NAU8540_REG_RST:
+ case NAU8540_REG_VMID_CTRL ... NAU8540_REG_MUTE:
+ case NAU8540_REG_ANALOG_ADC1 ... NAU8540_REG_PWR:
+ return true;
+ default:
+ return false;
+ }
+}
+
+static bool nau8540_volatile_reg(struct device *dev, unsigned int reg)
+{
+ switch (reg) {
+ case NAU8540_REG_SW_RESET:
+ case NAU8540_REG_ALC_GAIN_CH12 ... NAU8540_REG_ALC_STATUS:
+ case NAU8540_REG_P2P_CH1 ... NAU8540_REG_PEAK_CH4:
+ case NAU8540_REG_I2C_DEVICE_ID:
+ case NAU8540_REG_RST:
+ return true;
+ default:
+ return false;
+ }
+}
+
+
+static const DECLARE_TLV_DB_MINMAX(adc_vol_tlv, -12800, 3600);
+static const DECLARE_TLV_DB_MINMAX(fepga_gain_tlv, -100, 3600);
+
+static const struct snd_kcontrol_new nau8540_snd_controls[] = {
+ SOC_SINGLE_TLV("Mic1 Volume", NAU8540_REG_DIGITAL_GAIN_CH1,
+ 0, 0x520, 0, adc_vol_tlv),
+ SOC_SINGLE_TLV("Mic2 Volume", NAU8540_REG_DIGITAL_GAIN_CH2,
+ 0, 0x520, 0, adc_vol_tlv),
+ SOC_SINGLE_TLV("Mic3 Volume", NAU8540_REG_DIGITAL_GAIN_CH3,
+ 0, 0x520, 0, adc_vol_tlv),
+ SOC_SINGLE_TLV("Mic4 Volume", NAU8540_REG_DIGITAL_GAIN_CH4,
+ 0, 0x520, 0, adc_vol_tlv),
+
+ SOC_SINGLE_TLV("Frontend PGA1 Volume", NAU8540_REG_FEPGA3,
+ 0, 0x25, 0, fepga_gain_tlv),
+ SOC_SINGLE_TLV("Frontend PGA2 Volume", NAU8540_REG_FEPGA3,
+ 8, 0x25, 0, fepga_gain_tlv),
+ SOC_SINGLE_TLV("Frontend PGA3 Volume", NAU8540_REG_FEPGA4,
+ 0, 0x25, 0, fepga_gain_tlv),
+ SOC_SINGLE_TLV("Frontend PGA4 Volume", NAU8540_REG_FEPGA4,
+ 8, 0x25, 0, fepga_gain_tlv),
+};
+
+static const char * const adc_channel[] = {
+ "ADC channel 1", "ADC channel 2", "ADC channel 3", "ADC channel 4"
+};
+static SOC_ENUM_SINGLE_DECL(
+ digital_ch4_enum, NAU8540_REG_DIGITAL_MUX, 6, adc_channel);
+
+static const struct snd_kcontrol_new digital_ch4_mux =
+ SOC_DAPM_ENUM("Digital CH4 Select", digital_ch4_enum);
+
+static SOC_ENUM_SINGLE_DECL(
+ digital_ch3_enum, NAU8540_REG_DIGITAL_MUX, 4, adc_channel);
+
+static const struct snd_kcontrol_new digital_ch3_mux =
+ SOC_DAPM_ENUM("Digital CH3 Select", digital_ch3_enum);
+
+static SOC_ENUM_SINGLE_DECL(
+ digital_ch2_enum, NAU8540_REG_DIGITAL_MUX, 2, adc_channel);
+
+static const struct snd_kcontrol_new digital_ch2_mux =
+ SOC_DAPM_ENUM("Digital CH2 Select", digital_ch2_enum);
+
+static SOC_ENUM_SINGLE_DECL(
+ digital_ch1_enum, NAU8540_REG_DIGITAL_MUX, 0, adc_channel);
+
+static const struct snd_kcontrol_new digital_ch1_mux =
+ SOC_DAPM_ENUM("Digital CH1 Select", digital_ch1_enum);
+
+static const struct snd_soc_dapm_widget nau8540_dapm_widgets[] = {
+ SND_SOC_DAPM_SUPPLY("MICBIAS2", NAU8540_REG_MIC_BIAS, 11, 0, NULL, 0),
+ SND_SOC_DAPM_SUPPLY("MICBIAS1", NAU8540_REG_MIC_BIAS, 10, 0, NULL, 0),
+
+ SND_SOC_DAPM_INPUT("MIC1"),
+ SND_SOC_DAPM_INPUT("MIC2"),
+ SND_SOC_DAPM_INPUT("MIC3"),
+ SND_SOC_DAPM_INPUT("MIC4"),
+
+ SND_SOC_DAPM_PGA("Frontend PGA1", NAU8540_REG_PWR, 12, 0, NULL, 0),
+ SND_SOC_DAPM_PGA("Frontend PGA2", NAU8540_REG_PWR, 13, 0, NULL, 0),
+ SND_SOC_DAPM_PGA("Frontend PGA3", NAU8540_REG_PWR, 14, 0, NULL, 0),
+ SND_SOC_DAPM_PGA("Frontend PGA4", NAU8540_REG_PWR, 15, 0, NULL, 0),
+
+ SND_SOC_DAPM_ADC("ADC1", NULL,
+ NAU8540_REG_POWER_MANAGEMENT, 0, 0),
+ SND_SOC_DAPM_ADC("ADC2", NULL,
+ NAU8540_REG_POWER_MANAGEMENT, 1, 0),
+ SND_SOC_DAPM_ADC("ADC3", NULL,
+ NAU8540_REG_POWER_MANAGEMENT, 2, 0),
+ SND_SOC_DAPM_ADC("ADC4", NULL,
+ NAU8540_REG_POWER_MANAGEMENT, 3, 0),
+
+ SND_SOC_DAPM_PGA("ADC CH1", NAU8540_REG_ANALOG_PWR, 0, 0, NULL, 0),
+ SND_SOC_DAPM_PGA("ADC CH2", NAU8540_REG_ANALOG_PWR, 1, 0, NULL, 0),
+ SND_SOC_DAPM_PGA("ADC CH3", NAU8540_REG_ANALOG_PWR, 2, 0, NULL, 0),
+ SND_SOC_DAPM_PGA("ADC CH4", NAU8540_REG_ANALOG_PWR, 3, 0, NULL, 0),
+
+ SND_SOC_DAPM_MUX("Digital CH4 Mux",
+ SND_SOC_NOPM, 0, 0, &digital_ch4_mux),
+ SND_SOC_DAPM_MUX("Digital CH3 Mux",
+ SND_SOC_NOPM, 0, 0, &digital_ch3_mux),
+ SND_SOC_DAPM_MUX("Digital CH2 Mux",
+ SND_SOC_NOPM, 0, 0, &digital_ch2_mux),
+ SND_SOC_DAPM_MUX("Digital CH1 Mux",
+ SND_SOC_NOPM, 0, 0, &digital_ch1_mux),
+
+ SND_SOC_DAPM_AIF_OUT("AIFTX", "Capture", 0, SND_SOC_NOPM, 0, 0),
+};
+
+static const struct snd_soc_dapm_route nau8540_dapm_routes[] = {
+ {"Frontend PGA1", NULL, "MIC1"},
+ {"Frontend PGA2", NULL, "MIC2"},
+ {"Frontend PGA3", NULL, "MIC3"},
+ {"Frontend PGA4", NULL, "MIC4"},
+
+ {"ADC1", NULL, "Frontend PGA1"},
+ {"ADC2", NULL, "Frontend PGA2"},
+ {"ADC3", NULL, "Frontend PGA3"},
+ {"ADC4", NULL, "Frontend PGA4"},
+
+ {"ADC CH1", NULL, "ADC1"},
+ {"ADC CH2", NULL, "ADC2"},
+ {"ADC CH3", NULL, "ADC3"},
+ {"ADC CH4", NULL, "ADC4"},
+
+ {"ADC1", NULL, "MICBIAS1"},
+ {"ADC2", NULL, "MICBIAS1"},
+ {"ADC3", NULL, "MICBIAS2"},
+ {"ADC4", NULL, "MICBIAS2"},
+
+ {"Digital CH1 Mux", "ADC channel 1", "ADC CH1"},
+ {"Digital CH1 Mux", "ADC channel 2", "ADC CH2"},
+ {"Digital CH1 Mux", "ADC channel 3", "ADC CH3"},
+ {"Digital CH1 Mux", "ADC channel 4", "ADC CH4"},
+
+ {"Digital CH2 Mux", "ADC channel 1", "ADC CH1"},
+ {"Digital CH2 Mux", "ADC channel 2", "ADC CH2"},
+ {"Digital CH2 Mux", "ADC channel 3", "ADC CH3"},
+ {"Digital CH2 Mux", "ADC channel 4", "ADC CH4"},
+
+ {"Digital CH3 Mux", "ADC channel 1", "ADC CH1"},
+ {"Digital CH3 Mux", "ADC channel 2", "ADC CH2"},
+ {"Digital CH3 Mux", "ADC channel 3", "ADC CH3"},
+ {"Digital CH3 Mux", "ADC channel 4", "ADC CH4"},
+
+ {"Digital CH4 Mux", "ADC channel 1", "ADC CH1"},
+ {"Digital CH4 Mux", "ADC channel 2", "ADC CH2"},
+ {"Digital CH4 Mux", "ADC channel 3", "ADC CH3"},
+ {"Digital CH4 Mux", "ADC channel 4", "ADC CH4"},
+
+ {"AIFTX", NULL, "Digital CH1 Mux"},
+ {"AIFTX", NULL, "Digital CH2 Mux"},
+ {"AIFTX", NULL, "Digital CH3 Mux"},
+ {"AIFTX", NULL, "Digital CH4 Mux"},
+};
+
+static int nau8540_clock_check(struct nau8540 *nau8540, int rate, int osr)
+{
+ int osrate;
+
+ if (osr >= ARRAY_SIZE(osr_adc_sel))
+ return -EINVAL;
+ osrate = osr_adc_sel[osr].osr;
+
+ if (rate * osr > CLK_ADC_MAX) {
+ dev_err(nau8540->dev, "exceed the maximum frequency of CLK_ADC\n");
+ return -EINVAL;
+ }
+
+ return 0;
+}
+
+static int nau8540_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 nau8540 *nau8540 = snd_soc_codec_get_drvdata(codec);
+ unsigned int val_len = 0, osr;
+
+ /* CLK_ADC = OSR * FS
+ * ADC clock frequency is defined as Over Sampling Rate (OSR)
+ * multiplied by the audio sample rate (Fs). Note that the OSR and Fs
+ * values must be selected such that the maximum frequency is less
+ * than 6.144 MHz.
+ */
+ regmap_read(nau8540->regmap, NAU8540_REG_ADC_SAMPLE_RATE, &osr);
+ osr &= NAU8540_ADC_OSR_MASK;
+ if (nau8540_clock_check(nau8540, params_rate(params), osr))
+ return -EINVAL;
+ regmap_update_bits(nau8540->regmap, NAU8540_REG_CLOCK_SRC,
+ NAU8540_CLK_ADC_SRC_MASK,
+ osr_adc_sel[osr].clk_src << NAU8540_CLK_ADC_SRC_SFT);
+
+ switch (params_width(params)) {
+ case 16:
+ val_len |= NAU8540_I2S_DL_16;
+ break;
+ case 20:
+ val_len |= NAU8540_I2S_DL_20;
+ break;
+ case 24:
+ val_len |= NAU8540_I2S_DL_24;
+ break;
+ case 32:
+ val_len |= NAU8540_I2S_DL_32;
+ break;
+ default:
+ return -EINVAL;
+ }
+
+ regmap_update_bits(nau8540->regmap, NAU8540_REG_PCM_CTRL0,
+ NAU8540_I2S_DL_MASK, val_len);
+
+ return 0;
+}
+
+static int nau8540_set_fmt(struct snd_soc_dai *dai, unsigned int fmt)
+{
+ struct snd_soc_codec *codec = dai->codec;
+ struct nau8540 *nau8540 = 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 |= NAU8540_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 |= NAU8540_I2S_BP_INV;
+ break;
+ default:
+ return -EINVAL;
+ }
+
+ switch (fmt & SND_SOC_DAIFMT_FORMAT_MASK) {
+ case SND_SOC_DAIFMT_I2S:
+ ctrl1_val |= NAU8540_I2S_DF_I2S;
+ break;
+ case SND_SOC_DAIFMT_LEFT_J:
+ ctrl1_val |= NAU8540_I2S_DF_LEFT;
+ break;
+ case SND_SOC_DAIFMT_RIGHT_J:
+ ctrl1_val |= NAU8540_I2S_DF_RIGTH;
+ break;
+ case SND_SOC_DAIFMT_DSP_A:
+ ctrl1_val |= NAU8540_I2S_DF_PCM_AB;
+ break;
+ case SND_SOC_DAIFMT_DSP_B:
+ ctrl1_val |= NAU8540_I2S_DF_PCM_AB;
+ ctrl1_val |= NAU8540_I2S_PCMB_EN;
+ break;
+ default:
+ return -EINVAL;
+ }
+
+ regmap_update_bits(nau8540->regmap, NAU8540_REG_PCM_CTRL0,
+ NAU8540_I2S_DL_MASK | NAU8540_I2S_DF_MASK |
+ NAU8540_I2S_BP_INV | NAU8540_I2S_PCMB_EN, ctrl1_val);
+ regmap_update_bits(nau8540->regmap, NAU8540_REG_PCM_CTRL1,
+ NAU8540_I2S_MS_MASK | NAU8540_I2S_DO12_OE, ctrl2_val);
+ regmap_update_bits(nau8540->regmap, NAU8540_REG_PCM_CTRL2,
+ NAU8540_I2S_DO34_OE, 0);
+
+ return 0;
+}
+
+/**
+ * nau8540_set_tdm_slot - configure DAI TX TDM.
+ * @dai: DAI
+ * @tx_mask: bitmask representing active TX slots. Ex.
+ * 0xf for normal 4 channel TDM.
+ * 0xf0 for shifted 4 channel TDM
+ * @rx_mask: no used.
+ * @slots: Number of slots in use.
+ * @slot_width: Width in bits for each slot.
+ *
+ * Configures a DAI for TDM operation. Only support 4 slots TDM.
+ */
+static int nau8540_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 nau8540 *nau8540 = snd_soc_codec_get_drvdata(codec);
+ unsigned int ctrl2_val = 0, ctrl4_val = 0;
+
+ if (slots > 4 || ((tx_mask & 0xf0) && (tx_mask & 0xf)))
+ return -EINVAL;
+
+ ctrl4_val |= (NAU8540_TDM_MODE | NAU8540_TDM_OFFSET_EN);
+ if (tx_mask & 0xf0) {
+ ctrl2_val = 4 * slot_width;
+ ctrl4_val |= (tx_mask >> 4);
+ } else {
+ ctrl4_val |= tx_mask;
+ }
+ regmap_update_bits(nau8540->regmap, NAU8540_REG_PCM_CTRL4,
+ NAU8540_TDM_MODE | NAU8540_TDM_OFFSET_EN |
+ NAU8540_TDM_TX_MASK, ctrl4_val);
+ regmap_update_bits(nau8540->regmap, NAU8540_REG_PCM_CTRL1,
+ NAU8540_I2S_DO12_OE, NAU8540_I2S_DO12_OE);
+ regmap_update_bits(nau8540->regmap, NAU8540_REG_PCM_CTRL2,
+ NAU8540_I2S_DO34_OE | NAU8540_I2S_TSLOT_L_MASK,
+ NAU8540_I2S_DO34_OE | ctrl2_val);
+
+ return 0;
+}
+
+
+static const struct snd_soc_dai_ops nau8540_dai_ops = {
+ .hw_params = nau8540_hw_params,
+ .set_fmt = nau8540_set_fmt,
+ .set_tdm_slot = nau8540_set_tdm_slot,
+};
+
+#define NAU8540_RATES SNDRV_PCM_RATE_8000_48000
+#define NAU8540_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 nau8540_dai = {
+ .name = "nau8540-hifi",
+ .capture = {
+ .stream_name = "Capture",
+ .channels_min = 1,
+ .channels_max = 4,
+ .rates = NAU8540_RATES,
+ .formats = NAU8540_FORMATS,
+ },
+ .ops = &nau8540_dai_ops,
+};
+
+/**
+ * nau8540_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 nau8540_calc_fll_param(unsigned int fll_in,
+ unsigned int fs, struct nau8540_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 / NAU8540_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_max << 16, fref * fll_param->ratio);
+ fll_param->fll_int = (fvco >> 16) & 0x3FF;
+ fll_param->fll_frac = fvco & 0xFFFF;
+ return 0;
+}
+
+static void nau8540_fll_apply(struct regmap *regmap,
+ struct nau8540_fll *fll_param)
+{
+ regmap_update_bits(regmap, NAU8540_REG_CLOCK_SRC,
+ NAU8540_CLK_SRC_MASK | NAU8540_CLK_MCLK_SRC_MASK,
+ NAU8540_CLK_SRC_MCLK | fll_param->mclk_src);
+ regmap_update_bits(regmap, NAU8540_REG_FLL1,
+ NAU8540_FLL_RATIO_MASK, fll_param->ratio);
+ /* FLL 16-bit fractional input */
+ regmap_write(regmap, NAU8540_REG_FLL2, fll_param->fll_frac);
+ /* FLL 10-bit integer input */
+ regmap_update_bits(regmap, NAU8540_REG_FLL3,
+ NAU8540_FLL_INTEGER_MASK, fll_param->fll_int);
+ /* FLL pre-scaler */
+ regmap_update_bits(regmap, NAU8540_REG_FLL4,
+ NAU8540_FLL_REF_DIV_MASK,
+ fll_param->clk_ref_div << NAU8540_FLL_REF_DIV_SFT);
+ regmap_update_bits(regmap, NAU8540_REG_FLL5,
+ NAU8540_FLL_CLK_SW_MASK, NAU8540_FLL_CLK_SW_REF);
+ regmap_update_bits(regmap,
+ NAU8540_REG_FLL6, NAU8540_DCO_EN, 0);
+ if (fll_param->fll_frac) {
+ regmap_update_bits(regmap, NAU8540_REG_FLL5,
+ NAU8540_FLL_PDB_DAC_EN | NAU8540_FLL_LOOP_FTR_EN |
+ NAU8540_FLL_FTR_SW_MASK,
+ NAU8540_FLL_PDB_DAC_EN | NAU8540_FLL_LOOP_FTR_EN |
+ NAU8540_FLL_FTR_SW_FILTER);
+ regmap_update_bits(regmap, NAU8540_REG_FLL6,
+ NAU8540_SDM_EN, NAU8540_SDM_EN);
+ } else {
+ regmap_update_bits(regmap, NAU8540_REG_FLL5,
+ NAU8540_FLL_PDB_DAC_EN | NAU8540_FLL_LOOP_FTR_EN |
+ NAU8540_FLL_FTR_SW_MASK, NAU8540_FLL_FTR_SW_ACCU);
+ regmap_update_bits(regmap,
+ NAU8540_REG_FLL6, NAU8540_SDM_EN, 0);
+ }
+}
+
+/* freq_out must be 256*Fs in order to achieve the best performance */
+static int nau8540_set_pll(struct snd_soc_codec *codec, int pll_id, int source,
+ unsigned int freq_in, unsigned int freq_out)
+{
+ struct nau8540 *nau8540 = snd_soc_codec_get_drvdata(codec);
+ struct nau8540_fll fll_param;
+ int ret, fs;
+
+ switch (pll_id) {
+ case NAU8540_CLK_FLL_MCLK:
+ regmap_update_bits(nau8540->regmap, NAU8540_REG_FLL3,
+ NAU8540_FLL_CLK_SRC_MASK, NAU8540_FLL_CLK_SRC_MCLK);
+ break;
+
+ case NAU8540_CLK_FLL_BLK:
+ regmap_update_bits(nau8540->regmap, NAU8540_REG_FLL3,
+ NAU8540_FLL_CLK_SRC_MASK, NAU8540_FLL_CLK_SRC_BLK);
+ break;
+
+ case NAU8540_CLK_FLL_FS:
+ regmap_update_bits(nau8540->regmap, NAU8540_REG_FLL3,
+ NAU8540_FLL_CLK_SRC_MASK, NAU8540_FLL_CLK_SRC_FS);
+ break;
+
+ default:
+ dev_err(nau8540->dev, "Invalid clock id (%d)\n", pll_id);
+ return -EINVAL;
+ }
+ dev_dbg(nau8540->dev, "Sysclk is %dHz and clock id is %d\n",
+ freq_out, pll_id);
+
+ fs = freq_out / 256;
+ ret = nau8540_calc_fll_param(freq_in, fs, &fll_param);
+ if (ret < 0) {
+ dev_err(nau8540->dev, "Unsupported input clock %d\n", freq_in);
+ return ret;
+ }
+ dev_dbg(nau8540->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);
+
+ nau8540_fll_apply(nau8540->regmap, &fll_param);
+ mdelay(2);
+ regmap_update_bits(nau8540->regmap, NAU8540_REG_CLOCK_SRC,
+ NAU8540_CLK_SRC_MASK, NAU8540_CLK_SRC_VCO);
+
+ return 0;
+}
+
+static int nau8540_set_sysclk(struct snd_soc_codec *codec,
+ int clk_id, int source, unsigned int freq, int dir)
+{
+ struct nau8540 *nau8540 = snd_soc_codec_get_drvdata(codec);
+
+ switch (clk_id) {
+ case NAU8540_CLK_DIS:
+ case NAU8540_CLK_MCLK:
+ regmap_update_bits(nau8540->regmap, NAU8540_REG_CLOCK_SRC,
+ NAU8540_CLK_SRC_MASK, NAU8540_CLK_SRC_MCLK);
+ regmap_update_bits(nau8540->regmap, NAU8540_REG_FLL6,
+ NAU8540_DCO_EN, 0);
+ break;
+
+ case NAU8540_CLK_INTERNAL:
+ regmap_update_bits(nau8540->regmap, NAU8540_REG_FLL6,
+ NAU8540_DCO_EN, NAU8540_DCO_EN);
+ regmap_update_bits(nau8540->regmap, NAU8540_REG_CLOCK_SRC,
+ NAU8540_CLK_SRC_MASK, NAU8540_CLK_SRC_VCO);
+ break;
+
+ default:
+ dev_err(nau8540->dev, "Invalid clock id (%d)\n", clk_id);
+ return -EINVAL;
+ }
+
+ dev_dbg(nau8540->dev, "Sysclk is %dHz and clock id is %d\n",
+ freq, clk_id);
+
+ return 0;
+}
+
+static void nau8540_reset_chip(struct regmap *regmap)
+{
+ regmap_write(regmap, NAU8540_REG_SW_RESET, 0x00);
+ regmap_write(regmap, NAU8540_REG_SW_RESET, 0x00);
+}
+
+static void nau8540_init_regs(struct nau8540 *nau8540)
+{
+ struct regmap *regmap = nau8540->regmap;
+
+ /* Enable Bias/VMID/VMID Tieoff */
+ regmap_update_bits(regmap, NAU8540_REG_VMID_CTRL,
+ NAU8540_VMID_EN | NAU8540_VMID_SEL_MASK,
+ NAU8540_VMID_EN | (0x2 << NAU8540_VMID_SEL_SFT));
+ regmap_update_bits(regmap, NAU8540_REG_REFERENCE,
+ NAU8540_PRECHARGE_DIS | NAU8540_GLOBAL_BIAS_EN,
+ NAU8540_PRECHARGE_DIS | NAU8540_GLOBAL_BIAS_EN);
+ mdelay(2);
+ regmap_update_bits(regmap, NAU8540_REG_MIC_BIAS,
+ NAU8540_PU_PRE, NAU8540_PU_PRE);
+ regmap_update_bits(regmap, NAU8540_REG_CLOCK_CTRL,
+ NAU8540_CLK_ADC_EN | NAU8540_CLK_I2S_EN,
+ NAU8540_CLK_ADC_EN | NAU8540_CLK_I2S_EN);
+ /* ADC OSR selection, CLK_ADC = Fs * OSR */
+ regmap_update_bits(regmap, NAU8540_REG_ADC_SAMPLE_RATE,
+ NAU8540_ADC_OSR_MASK, NAU8540_ADC_OSR_64);
+}
+
+static int __maybe_unused nau8540_suspend(struct snd_soc_codec *codec)
+{
+ struct nau8540 *nau8540 = snd_soc_codec_get_drvdata(codec);
+
+ regcache_cache_only(nau8540->regmap, true);
+ regcache_mark_dirty(nau8540->regmap);
+
+ return 0;
+}
+
+static int __maybe_unused nau8540_resume(struct snd_soc_codec *codec)
+{
+ struct nau8540 *nau8540 = snd_soc_codec_get_drvdata(codec);
+
+ regcache_cache_only(nau8540->regmap, false);
+ regcache_sync(nau8540->regmap);
+
+ return 0;
+}
+
+static struct snd_soc_codec_driver nau8540_codec_driver = {
+ .set_sysclk = nau8540_set_sysclk,
+ .set_pll = nau8540_set_pll,
+ .suspend = nau8540_suspend,
+ .resume = nau8540_resume,
+ .suspend_bias_off = true,
+
+ .component_driver = {
+ .controls = nau8540_snd_controls,
+ .num_controls = ARRAY_SIZE(nau8540_snd_controls),
+ .dapm_widgets = nau8540_dapm_widgets,
+ .num_dapm_widgets = ARRAY_SIZE(nau8540_dapm_widgets),
+ .dapm_routes = nau8540_dapm_routes,
+ .num_dapm_routes = ARRAY_SIZE(nau8540_dapm_routes),
+ },
+};
+
+static const struct regmap_config nau8540_regmap_config = {
+ .val_bits = 16,
+ .reg_bits = 16,
+
+ .max_register = NAU8540_REG_MAX,
+ .readable_reg = nau8540_readable_reg,
+ .writeable_reg = nau8540_writeable_reg,
+ .volatile_reg = nau8540_volatile_reg,
+
+ .cache_type = REGCACHE_RBTREE,
+ .reg_defaults = nau8540_reg_defaults,
+ .num_reg_defaults = ARRAY_SIZE(nau8540_reg_defaults),
+};
+
+static int nau8540_i2c_probe(struct i2c_client *i2c,
+ const struct i2c_device_id *id)
+{
+ struct device *dev = &i2c->dev;
+ struct nau8540 *nau8540 = dev_get_platdata(dev);
+ int ret, value;
+
+ if (!nau8540) {
+ nau8540 = devm_kzalloc(dev, sizeof(*nau8540), GFP_KERNEL);
+ if (!nau8540)
+ return -ENOMEM;
+ }
+ i2c_set_clientdata(i2c, nau8540);
+
+ nau8540->regmap = devm_regmap_init_i2c(i2c, &nau8540_regmap_config);
+ if (IS_ERR(nau8540->regmap))
+ return PTR_ERR(nau8540->regmap);
+ ret = regmap_read(nau8540->regmap, NAU8540_REG_I2C_DEVICE_ID, &value);
+ if (ret < 0) {
+ dev_err(dev, "Failed to read device id from the NAU85L40: %d\n",
+ ret);
+ return ret;
+ }
+
+ nau8540->dev = dev;
+ nau8540_reset_chip(nau8540->regmap);
+ nau8540_init_regs(nau8540);
+
+ return snd_soc_register_codec(dev,
+ &nau8540_codec_driver, &nau8540_dai, 1);
+}
+
+static int nau8540_i2c_remove(struct i2c_client *client)
+{
+ snd_soc_unregister_codec(&client->dev);
+ return 0;
+}
+
+
+static const struct i2c_device_id nau8540_i2c_ids[] = {
+ { "nau8540", 0 },
+ { }
+};
+MODULE_DEVICE_TABLE(i2c, nau8540_i2c_ids);
+
+#ifdef CONFIG_OF
+static const struct of_device_id nau8540_of_ids[] = {
+ { .compatible = "nuvoton,nau8540", },
+ {}
+};
+MODULE_DEVICE_TABLE(of, nau8540_of_ids);
+#endif
+
+static struct i2c_driver nau8540_i2c_driver = {
+ .driver = {
+ .name = "nau8540",
+ .of_match_table = of_match_ptr(nau8540_of_ids),
+ },
+ .probe = nau8540_i2c_probe,
+ .remove = nau8540_i2c_remove,
+ .id_table = nau8540_i2c_ids,
+};
+module_i2c_driver(nau8540_i2c_driver);
+
+MODULE_DESCRIPTION("ASoC NAU85L40 driver");
+MODULE_AUTHOR("John Hsu <KCHSU0@nuvoton.com>");
+MODULE_LICENSE("GPL v2");
new file mode 100644
@@ -0,0 +1,222 @@
+/*
+ * NAU85L40 ALSA SoC audio driver
+ *
+ * Copyright 2016 Nuvoton Technology Corp.
+ * Author: John Hsu <KCHSU0@nuvoton.com>
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License version 2 as
+ * published by the Free Software Foundation.
+ */
+
+#ifndef __NAU8540_H__
+#define __NAU8540_H__
+
+#define NAU8540_REG_SW_RESET 0x00
+#define NAU8540_REG_POWER_MANAGEMENT 0x01
+#define NAU8540_REG_CLOCK_CTRL 0x02
+#define NAU8540_REG_CLOCK_SRC 0x03
+#define NAU8540_REG_FLL1 0x04
+#define NAU8540_REG_FLL2 0x05
+#define NAU8540_REG_FLL3 0x06
+#define NAU8540_REG_FLL4 0x07
+#define NAU8540_REG_FLL5 0x08
+#define NAU8540_REG_FLL6 0x09
+#define NAU8540_REG_FLL_VCO_RSV 0x0A
+#define NAU8540_REG_PCM_CTRL0 0x10
+#define NAU8540_REG_PCM_CTRL1 0x11
+#define NAU8540_REG_PCM_CTRL2 0x12
+#define NAU8540_REG_PCM_CTRL3 0x13
+#define NAU8540_REG_PCM_CTRL4 0x14
+#define NAU8540_REG_ALC_CONTROL_1 0x20
+#define NAU8540_REG_ALC_CONTROL_2 0x21
+#define NAU8540_REG_ALC_CONTROL_3 0x22
+#define NAU8540_REG_ALC_CONTROL_4 0x23
+#define NAU8540_REG_ALC_CONTROL_5 0x24
+#define NAU8540_REG_ALC_GAIN_CH12 0x2D
+#define NAU8540_REG_ALC_GAIN_CH34 0x2E
+#define NAU8540_REG_ALC_STATUS 0x2F
+#define NAU8540_REG_NOTCH_FIL1_CH1 0x30
+#define NAU8540_REG_NOTCH_FIL2_CH1 0x31
+#define NAU8540_REG_NOTCH_FIL1_CH2 0x32
+#define NAU8540_REG_NOTCH_FIL2_CH2 0x33
+#define NAU8540_REG_NOTCH_FIL1_CH3 0x34
+#define NAU8540_REG_NOTCH_FIL2_CH3 0x35
+#define NAU8540_REG_NOTCH_FIL1_CH4 0x36
+#define NAU8540_REG_NOTCH_FIL2_CH4 0x37
+#define NAU8540_REG_HPF_FILTER_CH12 0x38
+#define NAU8540_REG_HPF_FILTER_CH34 0x39
+#define NAU8540_REG_ADC_SAMPLE_RATE 0x3A
+#define NAU8540_REG_DIGITAL_GAIN_CH1 0x40
+#define NAU8540_REG_DIGITAL_GAIN_CH2 0x41
+#define NAU8540_REG_DIGITAL_GAIN_CH3 0x42
+#define NAU8540_REG_DIGITAL_GAIN_CH4 0x43
+#define NAU8540_REG_DIGITAL_MUX 0x44
+#define NAU8540_REG_P2P_CH1 0x48
+#define NAU8540_REG_P2P_CH2 0x49
+#define NAU8540_REG_P2P_CH3 0x4A
+#define NAU8540_REG_P2P_CH4 0x4B
+#define NAU8540_REG_PEAK_CH1 0x4C
+#define NAU8540_REG_PEAK_CH2 0x4D
+#define NAU8540_REG_PEAK_CH3 0x4E
+#define NAU8540_REG_PEAK_CH4 0x4F
+#define NAU8540_REG_GPIO_CTRL 0x50
+#define NAU8540_REG_MISC_CTRL 0x51
+#define NAU8540_REG_I2C_CTRL 0x52
+#define NAU8540_REG_I2C_DEVICE_ID 0x58
+#define NAU8540_REG_RST 0x5A
+#define NAU8540_REG_VMID_CTRL 0x60
+#define NAU8540_REG_MUTE 0x61
+#define NAU8540_REG_ANALOG_ADC1 0x64
+#define NAU8540_REG_ANALOG_ADC2 0x65
+#define NAU8540_REG_ANALOG_PWR 0x66
+#define NAU8540_REG_MIC_BIAS 0x67
+#define NAU8540_REG_REFERENCE 0x68
+#define NAU8540_REG_FEPGA1 0x69
+#define NAU8540_REG_FEPGA2 0x6A
+#define NAU8540_REG_FEPGA3 0x6B
+#define NAU8540_REG_FEPGA4 0x6C
+#define NAU8540_REG_PWR 0x6D
+#define NAU8540_REG_MAX NAU8540_REG_PWR
+
+
+/* POWER_MANAGEMENT (0x01) */
+#define NAU8540_ADC4_EN (0x1 << 3)
+#define NAU8540_ADC3_EN (0x1 << 2)
+#define NAU8540_ADC2_EN (0x1 << 1)
+#define NAU8540_ADC1_EN 0x1
+
+/* CLOCK_CTRL (0x02) */
+#define NAU8540_CLK_ADC_EN (0x1 << 15)
+#define NAU8540_CLK_I2S_EN (0x1 << 1)
+
+/* CLOCK_SRC (0x03) */
+#define NAU8540_CLK_SRC_SFT 15
+#define NAU8540_CLK_SRC_MASK (1 << NAU8540_CLK_SRC_SFT)
+#define NAU8540_CLK_SRC_VCO (1 << NAU8540_CLK_SRC_SFT)
+#define NAU8540_CLK_SRC_MCLK (0 << NAU8540_CLK_SRC_SFT)
+#define NAU8540_CLK_ADC_SRC_SFT 6
+#define NAU8540_CLK_ADC_SRC_MASK (0x3 << NAU8540_CLK_ADC_SRC_SFT)
+#define NAU8540_CLK_MCLK_SRC_MASK 0xf
+
+/* FLL1 (0x04) */
+#define NAU8540_FLL_RATIO_MASK 0x7f
+
+/* FLL3 (0x06) */
+#define NAU8540_FLL_CLK_SRC_SFT 10
+#define NAU8540_FLL_CLK_SRC_MASK (0x3 << NAU8540_FLL_CLK_SRC_SFT)
+#define NAU8540_FLL_CLK_SRC_MCLK (0 << NAU8540_FLL_CLK_SRC_SFT)
+#define NAU8540_FLL_CLK_SRC_BLK (0x2 << NAU8540_FLL_CLK_SRC_SFT)
+#define NAU8540_FLL_CLK_SRC_FS (0x3 << NAU8540_FLL_CLK_SRC_SFT)
+#define NAU8540_FLL_INTEGER_MASK 0x3ff
+
+/* FLL4 (0x07) */
+#define NAU8540_FLL_REF_DIV_SFT 10
+#define NAU8540_FLL_REF_DIV_MASK (0x3 << NAU8540_FLL_REF_DIV_SFT)
+
+/* FLL5 (0x08) */
+#define NAU8540_FLL_PDB_DAC_EN (0x1 << 15)
+#define NAU8540_FLL_LOOP_FTR_EN (0x1 << 14)
+#define NAU8540_FLL_CLK_SW_MASK (0x1 << 13)
+#define NAU8540_FLL_CLK_SW_N2 (0x1 << 13)
+#define NAU8540_FLL_CLK_SW_REF (0x0 << 13)
+#define NAU8540_FLL_FTR_SW_MASK (0x1 << 12)
+#define NAU8540_FLL_FTR_SW_ACCU (0x1 << 12)
+#define NAU8540_FLL_FTR_SW_FILTER (0x0 << 12)
+
+/* FLL6 (0x9) */
+#define NAU8540_DCO_EN (0x1 << 15)
+#define NAU8540_SDM_EN (0x1 << 14)
+
+/* PCM_CTRL0 (0x10) */
+#define NAU8540_I2S_BP_SFT 7
+#define NAU8540_I2S_BP_INV (0x1 << NAU8540_I2S_BP_SFT)
+#define NAU8540_I2S_PCMB_SFT 6
+#define NAU8540_I2S_PCMB_EN (0x1 << NAU8540_I2S_PCMB_SFT)
+#define NAU8540_I2S_DL_SFT 2
+#define NAU8540_I2S_DL_MASK (0x3 << NAU8540_I2S_DL_SFT)
+#define NAU8540_I2S_DL_16 (0 << NAU8540_I2S_DL_SFT)
+#define NAU8540_I2S_DL_20 (0x1 << NAU8540_I2S_DL_SFT)
+#define NAU8540_I2S_DL_24 (0x2 << NAU8540_I2S_DL_SFT)
+#define NAU8540_I2S_DL_32 (0x3 << NAU8540_I2S_DL_SFT)
+#define NAU8540_I2S_DF_MASK 0x3
+#define NAU8540_I2S_DF_RIGTH 0
+#define NAU8540_I2S_DF_LEFT 0x1
+#define NAU8540_I2S_DF_I2S 0x2
+#define NAU8540_I2S_DF_PCM_AB 0x3
+
+/* PCM_CTRL1 (0x11) */
+#define NAU8540_I2S_LRC_DIV_SFT 12
+#define NAU8540_I2S_LRC_DIV_MASK (0x3 << NAU8540_I2S_LRC_DIV_SFT)
+#define NAU8540_I2S_DO12_OE (0x1 << 4)
+#define NAU8540_I2S_MS_SFT 3
+#define NAU8540_I2S_MS_MASK (0x1 << NAU8540_I2S_MS_SFT)
+#define NAU8540_I2S_MS_MASTER (0x1 << NAU8540_I2S_MS_SFT)
+#define NAU8540_I2S_MS_SLAVE (0x0 << NAU8540_I2S_MS_SFT)
+#define NAU8540_I2S_BLK_DIV_MASK 0x7
+
+/* PCM_CTRL1 (0x12) */
+#define NAU8540_I2S_DO34_OE (0x1 << 11)
+#define NAU8540_I2S_TSLOT_L_MASK 0x3ff
+
+/* PCM_CTRL4 (0x14) */
+#define NAU8540_TDM_MODE (0x1 << 15)
+#define NAU8540_TDM_OFFSET_EN (0x1 << 14)
+#define NAU8540_TDM_TX_MASK 0xf
+
+/* ADC_SAMPLE_RATE (0x3A) */
+#define NAU8540_ADC_OSR_MASK 0x3
+#define NAU8540_ADC_OSR_256 0x3
+#define NAU8540_ADC_OSR_128 0x2
+#define NAU8540_ADC_OSR_64 0x1
+#define NAU8540_ADC_OSR_32 0x0
+
+/* VMID_CTRL (0x60) */
+#define NAU8540_VMID_EN (1 << 6)
+#define NAU8540_VMID_SEL_SFT 4
+#define NAU8540_VMID_SEL_MASK (0x3 << NAU8540_VMID_SEL_SFT)
+
+/* MIC_BIAS (0x67) */
+#define NAU8540_PU_PRE (0x1 << 8)
+
+/* REFERENCE (0x68) */
+#define NAU8540_PRECHARGE_DIS (0x1 << 13)
+#define NAU8540_GLOBAL_BIAS_EN (0x1 << 12)
+
+
+/* System Clock Source */
+enum {
+ NAU8540_CLK_DIS,
+ NAU8540_CLK_MCLK,
+ NAU8540_CLK_INTERNAL,
+ NAU8540_CLK_FLL_MCLK,
+ NAU8540_CLK_FLL_BLK,
+ NAU8540_CLK_FLL_FS,
+};
+
+struct nau8540 {
+ struct device *dev;
+ struct regmap *regmap;
+};
+
+struct nau8540_fll {
+ int mclk_src;
+ int ratio;
+ int fll_frac;
+ int fll_int;
+ int clk_ref_div;
+};
+
+struct nau8540_fll_attr {
+ unsigned int param;
+ unsigned int val;
+};
+
+/* over sampling rate */
+struct nau8540_osr_attr {
+ unsigned int osr;
+ unsigned int clk_src;
+};
+
+
+#endif /* __NAU8540_H__ */
Add codec driver of NAU85L40 Signed-off-by: John Hsu <KCHSU0@nuvoton.com> --- .../devicetree/bindings/sound/nau8540.txt | 16 + sound/soc/codecs/Kconfig | 5 + sound/soc/codecs/Makefile | 2 + sound/soc/codecs/nau8540.c | 835 +++++++++++++++++++++ sound/soc/codecs/nau8540.h | 222 ++++++ 5 files changed, 1080 insertions(+) create mode 100644 Documentation/devicetree/bindings/sound/nau8540.txt create mode 100644 sound/soc/codecs/nau8540.c create mode 100644 sound/soc/codecs/nau8540.h -- 2.6.4 =========================================================================================== The privileged confidential information contained in this email is intended for use only by the addressees as indicated by the original sender of this email. If you are not the addressee indicated in this email or are not responsible for delivery of the email to such a person, please kindly reply to the sender indicating this fact and delete all copies of it from your computer and network server immediately. Your cooperation is highly appreciated. It is advised that any unauthorized use of confidential information of Nuvoton is strictly prohibited; and any information in this email irrelevant to the official business of Nuvoton shall be deemed as neither given nor endorsed by Nuvoton.