new file mode 100644
@@ -0,0 +1,900 @@
+// SPDX-License-Identifier: GPL-2.0-only
+//
+// nau8325.c -- Nuvoton NAU8325 audio codec driver
+//
+// Copyright 2023 Nuvoton Technology Crop.
+// Author: Seven Lee <WTLI@nuvoton.com>
+// David Lin <CTLIN0@nuvoton.com>
+//
+
+#include <linux/clk.h>
+#include <linux/delay.h>
+#include <linux/init.h>
+#include <linux/i2c.h>
+#include <linux/module.h>
+#include <linux/regmap.h>
+#include <linux/slab.h>
+#include <sound/core.h>
+#include <sound/initval.h>
+#include <sound/pcm.h>
+#include <sound/pcm_params.h>
+#include <sound/soc.h>
+#include <sound/tlv.h>
+#include "nau8325.h"
+
+/* Range of Master Clock MCLK (Hz) */
+#define MASTER_CLK_MAX 49152000
+#define MASTER_CLK_MIN 2048000
+
+/* scaling for MCLK source */
+#define CLK_PROC_BYPASS (-1)
+
+/* the maximum CLK_DAC */
+#define CLK_DA_AD_MAX 6144000
+
+/* from MCLK input */
+#define MCLK_SRC 4
+
+static const struct nau8325_src_attr mclk_n1_div[] = {
+ { 1, 0x0 },
+ { 2, 0x1 },
+ { 3, 0x2 },
+};
+
+/* over sampling rate */
+static const struct nau8325_osr_attr osr_dac_sel[] = {
+ { 64, 2 }, /* OSR 64, SRC 1/4 */
+ { 256, 0 }, /* OSR 256, SRC 1 */
+ { 128, 1 }, /* OSR 128, SRC 1/2 */
+ { 0, 0 },
+ { 32, 3 }, /* OSR 32, SRC 1/8 */
+};
+
+static const struct nau8325_src_attr mclk_n2_div[] = {
+ { 0, 0x0 },
+ { 1, 0x1 },
+ { 2, 0x2 },
+ { 3, 0x3 },
+ { 4, 0x4 },
+};
+
+static const struct nau8325_src_attr mclk_n3_mult[] = {
+ { 0, 0x1 },
+ { 1, 0x2 },
+ { 2, 0x3 },
+ { 3, 0x4 },
+};
+
+/* Sample Rate and MCLK_SRC selections */
+static const struct nau8325_srate_attr target_srate_table[] = {
+ /* { FS, range, max, { MCLK source }} */
+ { 48000, 2, true, { 12288000, 19200000, 24000000 } },
+ { 16000, 1, false, { 4096000, 6400000, 8000000 } },
+ { 8000, 0, false, { 2048000, 3200000, 4000000 }},
+ { 44100, 2, true, { 11289600, 17640000, 22050000 }},
+ { 64000, 3, false, { 16384000, 25600000, 32000000 } },
+ { 96000, 3, true, { 24576000, 38400000, 48000000 } },
+ { 12000, 0, true, { 3072000, 4800000, 6000000 } },
+ { 24000, 1, true, { 6144000, 9600000, 12000000 } },
+ { 32000, 2, false, { 8192000, 12800000, 16000000 } },
+};
+
+static const struct reg_default nau8325_reg_defaults[] = {
+ { NAU8325_R00_HARDWARE_RST, 0x0000 },
+ { NAU8325_R01_SOFTWARE_RST, 0x0000 },
+ { NAU8325_R03_CLK_CTRL, 0x0000 },
+ { NAU8325_R04_ENA_CTRL, 0x0000 },
+ { NAU8325_R05_INTERRUPT_CTRL, 0x007f },
+ { NAU8325_R09_IRQOUT, 0x0000 },
+ { NAU8325_R0A_IO_CTRL, 0x0000 },
+ { NAU8325_R0B_PDM_CTRL, 0x0000 },
+ { NAU8325_R0C_TDM_CTRL, 0x0000 },
+ { NAU8325_R0D_I2S_PCM_CTRL1, 0x000a },
+ { NAU8325_R0E_I2S_PCM_CTRL2, 0x0000 },
+ { NAU8325_R0F_L_TIME_SLOT, 0x0000 },
+ { NAU8325_R10_R_TIME_SLOT, 0x0000 },
+ { NAU8325_R11_HPF_CTRL, 0x0000 },
+ { NAU8325_R12_MUTE_CTRL, 0x0000 },
+ { NAU8325_R13_DAC_VOLUME, 0xf3f3 },
+ { NAU8325_R29_DAC_CTRL1, 0x0081 },
+ { NAU8325_R2A_DAC_CTRL2, 0x0000 },
+ { NAU8325_R2C_ALC_CTRL1, 0x000e },
+ { NAU8325_R2D_ALC_CTRL2, 0x8400 },
+ { NAU8325_R2E_ALC_CTRL3, 0x0000 },
+ { NAU8325_R2F_ALC_CTRL4, 0x003f },
+ { NAU8325_R40_CLK_DET_CTRL, 0xa801 },
+ { NAU8325_R50_MIXER_CTRL, 0x0000 },
+ { NAU8325_R55_MISC_CTRL, 0x0000 },
+ { NAU8325_R60_BIAS_ADJ, 0x0000 },
+ { NAU8325_R61_ANALOG_CONTROL_1, 0x0000 },
+ { NAU8325_R62_ANALOG_CONTROL_2, 0x0000 },
+ { NAU8325_R63_ANALOG_CONTROL_3, 0x0000 },
+ { NAU8325_R64_ANALOG_CONTROL_4, 0x0000 },
+ { NAU8325_R65_ANALOG_CONTROL_5, 0x0000 },
+ { NAU8325_R66_ANALOG_CONTROL_6, 0x0000 },
+ { NAU8325_R69_CLIP_CTRL, 0x0000 },
+ { NAU8325_R73_RDAC, 0x0008 },
+};
+
+static bool nau8325_readable_reg(struct device *dev, unsigned int reg)
+{
+ switch (reg) {
+ case NAU8325_R02_DEVICE_ID ... NAU8325_R06_INT_CLR_STATUS:
+ case NAU8325_R09_IRQOUT ... NAU8325_R13_DAC_VOLUME:
+ case NAU8325_R1D_DEBUG_READ1:
+ case NAU8325_R1F_DEBUG_READ2:
+ case NAU8325_R22_DEBUG_READ3:
+ case NAU8325_R29_DAC_CTRL1 ... NAU8325_R2A_DAC_CTRL2:
+ case NAU8325_R2C_ALC_CTRL1 ... NAU8325_R2F_ALC_CTRL4:
+ case NAU8325_R40_CLK_DET_CTRL:
+ case NAU8325_R49_TEST_STATUS ... NAU8325_R4A_ANALOG_READ:
+ case NAU8325_R50_MIXER_CTRL:
+ case NAU8325_R55_MISC_CTRL:
+ case NAU8325_R60_BIAS_ADJ ... NAU8325_R66_ANALOG_CONTROL_6:
+ case NAU8325_R69_CLIP_CTRL:
+ case NAU8325_R73_RDAC:
+ return true;
+ default:
+ return false;
+ }
+}
+
+static bool nau8325_writeable_reg(struct device *dev, unsigned int reg)
+{
+ switch (reg) {
+ case NAU8325_R00_HARDWARE_RST:
+ case NAU8325_R03_CLK_CTRL ... NAU8325_R06_INT_CLR_STATUS:
+ case NAU8325_R09_IRQOUT ... NAU8325_R13_DAC_VOLUME:
+ case NAU8325_R29_DAC_CTRL1 ... NAU8325_R2A_DAC_CTRL2:
+ case NAU8325_R2C_ALC_CTRL1 ... NAU8325_R2F_ALC_CTRL4:
+ case NAU8325_R40_CLK_DET_CTRL:
+ case NAU8325_R50_MIXER_CTRL:
+ case NAU8325_R55_MISC_CTRL:
+ case NAU8325_R60_BIAS_ADJ ... NAU8325_R66_ANALOG_CONTROL_6:
+ case NAU8325_R69_CLIP_CTRL:
+ case NAU8325_R73_RDAC:
+ return true;
+ default:
+ return false;
+ }
+}
+
+static bool nau8325_volatile_reg(struct device *dev, unsigned int reg)
+{
+ switch (reg) {
+ case NAU8325_R00_HARDWARE_RST ... NAU8325_R02_DEVICE_ID:
+ case NAU8325_R06_INT_CLR_STATUS:
+ case NAU8325_R1D_DEBUG_READ1:
+ case NAU8325_R1F_DEBUG_READ2:
+ case NAU8325_R22_DEBUG_READ3:
+ case NAU8325_R4A_ANALOG_READ:
+ return true;
+ default:
+ return false;
+ }
+}
+
+static const char * const nau8325_dac_oversampl_texts[] = {
+ "64", "256", "128", "32",
+};
+
+static const unsigned int nau8325_dac_oversampl_values[] = {
+ 0, 1, 2, 4,
+};
+
+static const struct soc_enum nau8325_dac_oversampl_enum =
+ SOC_VALUE_ENUM_SINGLE(NAU8325_R29_DAC_CTRL1,
+ NAU8325_DAC_OVERSAMPLE_SFT, 0x7,
+ ARRAY_SIZE(nau8325_dac_oversampl_texts),
+ nau8325_dac_oversampl_texts,
+ nau8325_dac_oversampl_values);
+
+static const DECLARE_TLV_DB_MINMAX_MUTE(dac_vol_tlv, -8000, 600);
+
+static const struct snd_kcontrol_new nau8325_snd_controls[] = {
+ SOC_ENUM("DAC Oversampling Rate", nau8325_dac_oversampl_enum),
+ SOC_DOUBLE_TLV("Speaker Volume", NAU8325_R13_DAC_VOLUME,
+ NAU8325_DAC_VOLUME_L_SFT, NAU8325_DAC_VOLUME_R_SFT,
+ NAU8325_DAC_VOLUME_R_EN, 0, dac_vol_tlv),
+ SOC_SINGLE("ALC Max Gain", NAU8325_R2C_ALC_CTRL1,
+ NAU8325_ALC_MAXGAIN_SFT, NAU8325_ALC_MAXGAIN_MAX, 0),
+ SOC_SINGLE("ALC Min Gain", NAU8325_R2C_ALC_CTRL1,
+ NAU8325_ALC_MINGAIN_SFT, NAU8325_ALC_MINGAIN_MAX, 0),
+ SOC_SINGLE("ALC Decay Timer", NAU8325_R2D_ALC_CTRL2,
+ NAU8325_ALC_DCY_SFT, NAU8325_ALC_DCY_MAX, 0),
+ SOC_SINGLE("ALC Attack Timer", NAU8325_R2D_ALC_CTRL2,
+ NAU8325_ALC_ATK_SFT, NAU8325_ALC_ATK_MAX, 0),
+ SOC_SINGLE("ALC Hold Time", NAU8325_R2D_ALC_CTRL2,
+ NAU8325_ALC_HLD_SFT, NAU8325_ALC_HLD_MAX, 0),
+ SOC_SINGLE("ALC Target Level", NAU8325_R2D_ALC_CTRL2,
+ NAU8325_ALC_LVL_SFT, NAU8325_ALC_LVL_MAX, 0),
+ SOC_SINGLE("ALC Enable Switch", NAU8325_R2E_ALC_CTRL3,
+ NAU8325_ALC_EN_SFT, 1, 0),
+};
+
+static int nau8325_dac_event(struct snd_soc_dapm_widget *w,
+ struct snd_kcontrol *kcontrol, int event)
+{
+ struct snd_soc_component *component =
+ snd_soc_dapm_to_component(w->dapm);
+ struct nau8325 *nau8325 = snd_soc_component_get_drvdata(component);
+
+ switch (event) {
+ case SND_SOC_DAPM_POST_PMU:
+ regmap_update_bits(nau8325->regmap, NAU8325_R12_MUTE_CTRL,
+ NAU8325_SOFT_MUTE, 0);
+ msleep(30);
+ break;
+ case SND_SOC_DAPM_PRE_PMD:
+ /* Soft mute the output to prevent the pop noise. */
+ regmap_update_bits(nau8325->regmap, NAU8325_R12_MUTE_CTRL,
+ NAU8325_SOFT_MUTE, NAU8325_SOFT_MUTE);
+ msleep(30);
+ break;
+ default:
+ return -EINVAL;
+ }
+
+ return 0;
+}
+
+static int nau8325_powerup_event(struct snd_soc_dapm_widget *w,
+ struct snd_kcontrol *kcontrol, int event)
+{
+ struct snd_soc_component *component =
+ snd_soc_dapm_to_component(w->dapm);
+ struct nau8325 *nau8325 = snd_soc_component_get_drvdata(component);
+
+ if (nau8325->clock_detection)
+ return 0;
+
+ switch (event) {
+ case SND_SOC_DAPM_POST_PMU:
+ regmap_update_bits(nau8325->regmap, NAU8325_R40_CLK_DET_CTRL,
+ NAU8325_PWRUP_DFT, NAU8325_PWRUP_DFT);
+ break;
+ case SND_SOC_DAPM_POST_PMD:
+ regmap_update_bits(nau8325->regmap, NAU8325_R40_CLK_DET_CTRL,
+ NAU8325_PWRUP_DFT, 0);
+ break;
+ default:
+ return -EINVAL;
+ }
+
+ return 0;
+}
+
+static const struct snd_soc_dapm_widget nau8325_dapm_widgets[] = {
+ SND_SOC_DAPM_SUPPLY("Power Up", SND_SOC_NOPM, 0, 0,
+ nau8325_powerup_event, SND_SOC_DAPM_POST_PMU |
+ SND_SOC_DAPM_POST_PMD),
+ SND_SOC_DAPM_DAC_E("DACL", NULL, NAU8325_R04_ENA_CTRL,
+ NAU8325_DAC_LEFT_CH_EN_SFT, 0, nau8325_dac_event,
+ SND_SOC_DAPM_POST_PMU | SND_SOC_DAPM_PRE_PMD),
+ SND_SOC_DAPM_DAC_E("DACR", NULL, NAU8325_R04_ENA_CTRL,
+ NAU8325_DAC_RIGHT_CH_EN_SFT, 0, nau8325_dac_event,
+ SND_SOC_DAPM_POST_PMU | SND_SOC_DAPM_PRE_PMD),
+ SND_SOC_DAPM_AIF_IN("AIFRX", "Playback", 0, SND_SOC_NOPM, 0, 0),
+
+ SND_SOC_DAPM_OUTPUT("SPKL"),
+ SND_SOC_DAPM_OUTPUT("SPKR"),
+};
+
+static const struct snd_soc_dapm_route nau8325_dapm_routes[] = {
+ { "DACL", NULL, "Power Up" },
+ { "DACR", NULL, "Power Up" },
+
+ { "DACL", NULL, "AIFRX" },
+ { "DACR", NULL, "AIFRX" },
+ { "SPKL", NULL, "DACL" },
+ { "SPKR", NULL, "DACR" },
+};
+
+static int nau8325_srate_clk_apply(struct nau8325 *nau8325,
+ const struct nau8325_srate_attr *srate_table,
+ int n1_sel, int mclk_mult_sel, int n2_sel)
+{
+ if (!srate_table || n2_sel < 0 || n2_sel >= ARRAY_SIZE(mclk_n2_div) ||
+ n1_sel < 0 || n1_sel >= ARRAY_SIZE(mclk_n1_div)) {
+ dev_dbg(nau8325->dev, "The CLK isn't supported.");
+ return -EINVAL;
+ }
+
+ regmap_update_bits(nau8325->regmap, NAU8325_R40_CLK_DET_CTRL,
+ NAU8325_REG_SRATE_MASK | NAU8325_REG_DIV_MAX,
+ (srate_table->range << NAU8325_REG_SRATE_SFT) |
+ (srate_table->max ? NAU8325_REG_DIV_MAX : 0));
+ regmap_update_bits(nau8325->regmap, NAU8325_R03_CLK_CTRL,
+ NAU8325_MCLK_SRC_MASK, mclk_n2_div[n2_sel].val);
+ regmap_update_bits(nau8325->regmap, NAU8325_R03_CLK_CTRL,
+ NAU8325_CLK_MUL_SRC_MASK,
+ mclk_n1_div[n1_sel].val << NAU8325_CLK_MUL_SRC_SFT);
+
+ if (mclk_mult_sel != CLK_PROC_BYPASS) {
+ regmap_update_bits(nau8325->regmap, NAU8325_R03_CLK_CTRL,
+ NAU8325_MCLK_SEL_MASK,
+ mclk_n3_mult[mclk_mult_sel].val <<
+ NAU8325_MCLK_SEL_SFT);
+ } else {
+ regmap_update_bits(nau8325->regmap, NAU8325_R03_CLK_CTRL,
+ NAU8325_MCLK_SEL_MASK, 0);
+ }
+
+ switch (mclk_mult_sel) {
+ case 2:
+ regmap_update_bits(nau8325->regmap, NAU8325_R65_ANALOG_CONTROL_5,
+ NAU8325_MCLK4XEN_EN, NAU8325_MCLK4XEN_EN);
+ break;
+ case 3:
+ regmap_update_bits(nau8325->regmap, NAU8325_R65_ANALOG_CONTROL_5,
+ NAU8325_MCLK4XEN_EN | NAU8325_MCLK8XEN_EN,
+ NAU8325_MCLK4XEN_EN | NAU8325_MCLK8XEN_EN);
+ break;
+ default:
+ regmap_update_bits(nau8325->regmap, NAU8325_R65_ANALOG_CONTROL_5,
+ NAU8325_MCLK4XEN_EN | NAU8325_MCLK8XEN_EN, 0);
+ break;
+ }
+
+ return 0;
+}
+
+static int nau8325_clksrc_n2(struct nau8325 *nau8325,
+ const struct nau8325_srate_attr *srate_table,
+ int mclk, int *n2_sel)
+{
+ int i, mclk_src, ratio;
+
+ ratio = NAU8325_MCLK_FS_RATIO_NUM;
+ for (i = 0; i < ARRAY_SIZE(mclk_n2_div); i++) {
+ mclk_src = mclk >> mclk_n2_div[i].param;
+ if (srate_table->mclk_src[NAU8325_MCLK_FS_RATIO_256] == mclk_src) {
+ ratio = NAU8325_MCLK_FS_RATIO_256;
+ break;
+ } else if (srate_table->mclk_src[NAU8325_MCLK_FS_RATIO_400] == mclk_src) {
+ ratio = NAU8325_MCLK_FS_RATIO_400;
+ break;
+ } else if (srate_table->mclk_src[NAU8325_MCLK_FS_RATIO_500] == mclk_src) {
+ ratio = NAU8325_MCLK_FS_RATIO_500;
+ break;
+ }
+ }
+ if (ratio != NAU8325_MCLK_FS_RATIO_NUM)
+ *n2_sel = i;
+
+ return ratio;
+}
+
+static const struct nau8325_srate_attr *target_srate_attribute(int srate)
+{
+ int i;
+
+ for (i = 0; i < ARRAY_SIZE(target_srate_table); i++)
+ if (target_srate_table[i].fs == srate)
+ break;
+
+ if (i == ARRAY_SIZE(target_srate_table))
+ goto proc_err;
+
+ return &target_srate_table[i];
+
+proc_err:
+ return NULL;
+}
+
+static int nau8325_clksrc_choose(struct nau8325 *nau8325,
+ const struct nau8325_srate_attr **srate_table,
+ int *n1_sel, int *mult_sel, int *n2_sel)
+{
+ int i, j, mclk, mclk_max, ratio, ratio_sel, n2_max;
+
+ if (!nau8325->mclk || !nau8325->fs)
+ goto proc_err;
+
+ /* select sampling rate and MCLK_SRC */
+ *srate_table = target_srate_attribute(nau8325->fs);
+ if (!*srate_table)
+ goto proc_err;
+
+ /* First check clock from MCLK directly, decide N2 for MCLK_SRC.
+ * If not good, consider 1/N1 and Multiplier.
+ */
+ ratio = nau8325_clksrc_n2(nau8325, *srate_table, nau8325->mclk, n2_sel);
+ if (ratio != NAU8325_MCLK_FS_RATIO_NUM) {
+ *n1_sel = 0;
+ *mult_sel = CLK_PROC_BYPASS;
+ *n2_sel = MCLK_SRC;
+ goto proc_done;
+ }
+
+ /* Get MCLK_SRC through 1/N, Multiplier, and then 1/N2. */
+ mclk_max = 0;
+ for (i = 0; i < ARRAY_SIZE(mclk_n1_div); i++) {
+ for (j = 0; j < ARRAY_SIZE(mclk_n3_mult); j++) {
+ mclk = nau8325->mclk << mclk_n3_mult[j].param;
+ mclk = mclk / mclk_n1_div[i].param;
+ ratio = nau8325_clksrc_n2(nau8325,
+ *srate_table, mclk, n2_sel);
+ if (ratio != NAU8325_MCLK_FS_RATIO_NUM &&
+ (mclk_max < mclk || i > *n1_sel)) {
+ mclk_max = mclk;
+ n2_max = *n2_sel;
+ *n1_sel = i;
+ *mult_sel = j;
+ ratio_sel = ratio;
+ goto proc_done;
+ }
+ }
+ }
+ if (mclk_max) {
+ *n2_sel = n2_max;
+ ratio = ratio_sel;
+ goto proc_done;
+ }
+
+proc_err:
+ dev_dbg(nau8325->dev, "The MCLK %d is invalid. It can't get MCLK_SRC of 256/400/500 FS (%d)",
+ nau8325->mclk, nau8325->fs);
+ return -EINVAL;
+proc_done:
+ dev_dbg(nau8325->dev, "nau8325->fs=%d,range=0x%x, %s, (n1,mu,n2,dmu):(%d,%d,%d), MCLK_SRC=%uHz (%d)",
+ nau8325->fs, (*srate_table)->range,
+ (*srate_table)->max ? "MAX" : "MIN",
+ *n1_sel == CLK_PROC_BYPASS ?
+ CLK_PROC_BYPASS : mclk_n1_div[*n1_sel].param,
+ *mult_sel == CLK_PROC_BYPASS ?
+ CLK_PROC_BYPASS : 1 << mclk_n3_mult[*mult_sel].param,
+ 1 << mclk_n2_div[*n2_sel].param,
+ (*srate_table)->mclk_src[ratio],
+ (*srate_table)->mclk_src[ratio] / nau8325->fs);
+
+ return 0;
+}
+
+static int nau8325_clock_config(struct nau8325 *nau8325)
+{
+ const struct nau8325_srate_attr *srate_table;
+ int ret, n1_sel, mult_sel, n2_sel;
+
+ ret = nau8325_clksrc_choose(nau8325, &srate_table,
+ &n1_sel, &mult_sel, &n2_sel);
+ if (ret)
+ goto err;
+
+ ret = nau8325_srate_clk_apply(nau8325, srate_table,
+ n1_sel, mult_sel, n2_sel);
+ if (ret)
+ goto err;
+
+ return 0;
+err:
+ return ret;
+}
+
+static const struct nau8325_osr_attr *nau8325_get_osr(struct nau8325 *nau8325)
+{
+ unsigned int osr;
+
+ regmap_read(nau8325->regmap, NAU8325_R29_DAC_CTRL1, &osr);
+ osr &= NAU8325_DAC_OVERSAMPLE_MASK;
+ if (osr >= ARRAY_SIZE(osr_dac_sel))
+ return NULL;
+
+ return &osr_dac_sel[osr];
+}
+
+static int nau8325_dai_startup(struct snd_pcm_substream *substream,
+ struct snd_soc_dai *dai)
+{
+ struct snd_soc_component *component = dai->component;
+ struct nau8325 *nau8325 = snd_soc_component_get_drvdata(component);
+ const struct nau8325_osr_attr *osr;
+
+ osr = nau8325_get_osr(nau8325);
+ if (!osr || !osr->osr)
+ return -EINVAL;
+
+ return snd_pcm_hw_constraint_minmax(substream->runtime,
+ SNDRV_PCM_HW_PARAM_RATE,
+ 0, CLK_DA_AD_MAX / osr->osr);
+}
+
+static int nau8325_hw_params(struct snd_pcm_substream *substream,
+ struct snd_pcm_hw_params *params,
+ struct snd_soc_dai *dai)
+{
+ struct snd_soc_component *component = dai->component;
+ struct nau8325 *nau8325 = snd_soc_component_get_drvdata(component);
+ unsigned int val_len = 0;
+ const struct nau8325_osr_attr *osr;
+ int ret;
+
+ nau8325->fs = params_rate(params);
+ osr = nau8325_get_osr(nau8325);
+ if (!osr || !osr->osr || nau8325->fs * osr->osr > CLK_DA_AD_MAX) {
+ ret = -EINVAL;
+ goto err;
+ }
+ regmap_update_bits(nau8325->regmap, NAU8325_R03_CLK_CTRL,
+ NAU8325_CLK_DAC_SRC_MASK,
+ osr->clk_src << NAU8325_CLK_DAC_SRC_SFT);
+
+ ret = nau8325_clock_config(nau8325);
+ if (ret)
+ goto err;
+
+ switch (params_width(params)) {
+ case 16:
+ val_len |= NAU8325_I2S_DL_16;
+ break;
+ case 20:
+ val_len |= NAU8325_I2S_DL_20;
+ break;
+ case 24:
+ val_len |= NAU8325_I2S_DL_24;
+ break;
+ case 32:
+ val_len |= NAU8325_I2S_DL_32;
+ break;
+ default:
+ ret = -EINVAL;
+ goto err;
+ }
+
+ regmap_update_bits(nau8325->regmap, NAU8325_R0D_I2S_PCM_CTRL1,
+ NAU8325_I2S_DL_MASK, val_len);
+
+ return 0;
+
+err:
+ return ret;
+}
+
+static int nau8325_set_fmt(struct snd_soc_dai *dai, unsigned int fmt)
+{
+ struct snd_soc_component *component = dai->component;
+ struct nau8325 *nau8325 = snd_soc_component_get_drvdata(component);
+ unsigned int ctrl1_val = 0;
+
+ switch (fmt & SND_SOC_DAIFMT_MASTER_MASK) {
+ case SND_SOC_DAIFMT_CBC_CFC:
+ 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 |= NAU8325_I2S_BP_INV;
+ break;
+ default:
+ return -EINVAL;
+ }
+
+ switch (fmt & SND_SOC_DAIFMT_FORMAT_MASK) {
+ case SND_SOC_DAIFMT_I2S:
+ ctrl1_val |= NAU8325_I2S_DF_I2S;
+ break;
+ case SND_SOC_DAIFMT_LEFT_J:
+ ctrl1_val |= NAU8325_I2S_DF_LEFT;
+ break;
+ case SND_SOC_DAIFMT_RIGHT_J:
+ ctrl1_val |= NAU8325_I2S_DF_RIGTH;
+ break;
+ case SND_SOC_DAIFMT_DSP_A:
+ ctrl1_val |= NAU8325_I2S_DF_PCM_AB;
+ break;
+ case SND_SOC_DAIFMT_DSP_B:
+ ctrl1_val |= NAU8325_I2S_DF_PCM_AB;
+ ctrl1_val |= NAU8325_I2S_PCMB_EN;
+ break;
+ default:
+ return -EINVAL;
+ }
+
+ regmap_update_bits(nau8325->regmap, NAU8325_R0D_I2S_PCM_CTRL1,
+ NAU8325_I2S_DF_MASK | NAU8325_I2S_BP_MASK |
+ NAU8325_I2S_PCMB_EN, ctrl1_val);
+
+ return 0;
+}
+
+static int nau8325_set_sysclk(struct snd_soc_component *component, int clk_id,
+ int source, unsigned int freq, int dir)
+{
+ struct nau8325 *nau8325 = snd_soc_component_get_drvdata(component);
+
+ if (freq < MASTER_CLK_MIN || freq > MASTER_CLK_MAX) {
+ dev_dbg(nau8325->dev, "MCLK exceeds the range, MCLK:%d", freq);
+ return -EINVAL;
+ }
+
+ nau8325->mclk = freq;
+ dev_dbg(nau8325->dev, "MCLK %dHz", nau8325->mclk);
+
+ return 0;
+}
+
+static const struct snd_soc_component_driver nau8325_component_driver = {
+ .set_sysclk = nau8325_set_sysclk,
+ .suspend_bias_off = true,
+ .controls = nau8325_snd_controls,
+ .num_controls = ARRAY_SIZE(nau8325_snd_controls),
+ .dapm_widgets = nau8325_dapm_widgets,
+ .num_dapm_widgets = ARRAY_SIZE(nau8325_dapm_widgets),
+ .dapm_routes = nau8325_dapm_routes,
+ .num_dapm_routes = ARRAY_SIZE(nau8325_dapm_routes),
+};
+
+static const struct snd_soc_dai_ops nau8325_dai_ops = {
+ .startup = nau8325_dai_startup,
+ .hw_params = nau8325_hw_params,
+ .set_fmt = nau8325_set_fmt,
+};
+
+#define NAU8325_RATES SNDRV_PCM_RATE_8000_96000
+#define NAU8325_FORMATS (SNDRV_PCM_FMTBIT_S16_LE | SNDRV_PCM_FMTBIT_S20_3LE \
+ | SNDRV_PCM_FMTBIT_S24_3LE)
+
+static struct snd_soc_dai_driver nau8325_dai = {
+ .name = NAU8325_CODEC_DAI,
+ .playback = {
+ .stream_name = "Playback",
+ .channels_min = 1,
+ .channels_max = 2,
+ .rates = NAU8325_RATES,
+ .formats = NAU8325_FORMATS,
+ },
+ .ops = &nau8325_dai_ops,
+};
+
+static const struct regmap_config nau8325_regmap_config = {
+ .reg_bits = NAU8325_REG_ADDR_LEN,
+ .val_bits = NAU8325_REG_DATA_LEN,
+
+ .max_register = NAU8325_REG_MAX,
+ .readable_reg = nau8325_readable_reg,
+ .writeable_reg = nau8325_writeable_reg,
+ .volatile_reg = nau8325_volatile_reg,
+
+ .cache_type = REGCACHE_RBTREE,
+ .reg_defaults = nau8325_reg_defaults,
+ .num_reg_defaults = ARRAY_SIZE(nau8325_reg_defaults),
+};
+
+static void nau8325_reset_chip(struct regmap *regmap)
+{
+ regmap_write(regmap, NAU8325_R00_HARDWARE_RST, 0x0001);
+ regmap_write(regmap, NAU8325_R00_HARDWARE_RST, 0x0000);
+}
+
+static void nau8325_init_regs(struct nau8325 *nau8325)
+{
+ struct regmap *regmap = nau8325->regmap;
+ struct device *dev = nau8325->dev;
+
+ /* set ALC parameters */
+ regmap_update_bits(regmap, NAU8325_R2C_ALC_CTRL1,
+ NAU8325_ALC_MAXGAIN_MASK,
+ 0x7 << NAU8325_ALC_MAXGAIN_SFT);
+ regmap_update_bits(regmap, NAU8325_R2D_ALC_CTRL2,
+ NAU8325_ALC_DCY_MASK | NAU8325_ALC_ATK_MASK |
+ NAU8325_ALC_HLD_MASK, (0x5 << NAU8325_ALC_DCY_SFT) |
+ (0x3 << NAU8325_ALC_ATK_SFT) |
+ (0x5 << NAU8325_ALC_HLD_SFT));
+ /* Enable ALC to avoid signal distortion when battery low. */
+ if (nau8325->alc_enable)
+ regmap_update_bits(regmap, NAU8325_R2E_ALC_CTRL3,
+ NAU8325_ALC_EN, NAU8325_ALC_EN);
+ if (nau8325->clock_detection)
+ regmap_update_bits(regmap, NAU8325_R40_CLK_DET_CTRL,
+ NAU8325_CLKPWRUP_DIS |
+ NAU8325_PWRUP_DFT, 0);
+ else
+ regmap_update_bits(regmap, NAU8325_R40_CLK_DET_CTRL,
+ NAU8325_CLKPWRUP_DIS | NAU8325_PWRUP_DFT,
+ NAU8325_CLKPWRUP_DIS);
+ if (nau8325->clock_det_data)
+ regmap_update_bits(regmap, NAU8325_R40_CLK_DET_CTRL,
+ NAU8325_APWRUP_EN, NAU8325_APWRUP_EN);
+ else
+ regmap_update_bits(regmap, NAU8325_R40_CLK_DET_CTRL,
+ NAU8325_APWRUP_EN, 0);
+
+ /* DAC Reference Voltage Setting */
+ switch (nau8325->dac_vref_microvolt) {
+ case 1800000:
+ regmap_update_bits(regmap, NAU8325_R73_RDAC,
+ NAU8325_DACVREFSEL_MASK, 0 << NAU8325_DACVREFSEL_SFT);
+ break;
+ case 2700000:
+ regmap_update_bits(regmap, NAU8325_R73_RDAC,
+ NAU8325_DACVREFSEL_MASK, 1 << NAU8325_DACVREFSEL_SFT);
+ break;
+ case 2880000:
+ regmap_update_bits(regmap, NAU8325_R73_RDAC,
+ NAU8325_DACVREFSEL_MASK, 2 << NAU8325_DACVREFSEL_SFT);
+ break;
+ case 3060000:
+ regmap_update_bits(regmap, NAU8325_R73_RDAC,
+ NAU8325_DACVREFSEL_MASK, 3 << NAU8325_DACVREFSEL_SFT);
+ break;
+ default:
+ dev_dbg(dev, "Invalid dac-vref-microvolt %d", nau8325->dac_vref_microvolt);
+
+ }
+
+ /* DAC Reference Voltage Decoupling Capacitors. */
+ regmap_update_bits(regmap, NAU8325_R63_ANALOG_CONTROL_3,
+ NAU8325_CLASSD_COARSE_GAIN_MASK, 0x4);
+ /* Auto-Att Min Gain 0dB, Class-D N Driver Slew Rate -25%. */
+ regmap_update_bits(regmap, NAU8325_R64_ANALOG_CONTROL_4,
+ NAU8325_CLASSD_SLEWN_MASK, 0x7);
+
+ /* VMID Tieoff (VMID Resistor Selection) */
+ switch (nau8325->vref_impedance_ohms) {
+ case 0:
+ regmap_update_bits(regmap, NAU8325_R60_BIAS_ADJ,
+ NAU8325_BIAS_VMID_SEL_MASK, 0 << NAU8325_BIAS_VMID_SEL_SFT);
+ break;
+ case 25000:
+ regmap_update_bits(regmap, NAU8325_R60_BIAS_ADJ,
+ NAU8325_BIAS_VMID_SEL_MASK, 1 << NAU8325_BIAS_VMID_SEL_SFT);
+ break;
+ case 125000:
+ regmap_update_bits(regmap, NAU8325_R60_BIAS_ADJ,
+ NAU8325_BIAS_VMID_SEL_MASK, 2 << NAU8325_BIAS_VMID_SEL_SFT);
+ break;
+ case 2500:
+ regmap_update_bits(regmap, NAU8325_R60_BIAS_ADJ,
+ NAU8325_BIAS_VMID_SEL_MASK, 3 << NAU8325_BIAS_VMID_SEL_SFT);
+ break;
+ default:
+ dev_dbg(dev, "Invalid vref-impedance-ohms %d", nau8325->vref_impedance_ohms);
+ }
+
+
+ /* enable VMID, BIAS, DAC, DCA CLOCK, Voltage/Current Amps
+ */
+ regmap_update_bits(regmap, NAU8325_R61_ANALOG_CONTROL_1,
+ NAU8325_DACEN_MASK | NAU8325_DACCLKEN_MASK |
+ NAU8325_DACEN_R_MASK | NAU8325_DACCLKEN_R_MASK |
+ NAU8325_CLASSDEN_MASK | NAU8325_VMDFSTENB_MASK |
+ NAU8325_BIASEN_MASK | NAU8325_VMIDEN_MASK,
+ (0x1 << NAU8325_DACEN_SFT) |
+ (0x1 << NAU8325_DACCLKEN_SFT) |
+ (0x1 << NAU8325_DACEN_R_SFT) |
+ (0x1 << NAU8325_DACCLKEN_R_SFT) |
+ (0x1 << NAU8325_CLASSDEN_SFT) |
+ (0x1 << NAU8325_VMDFSTENB_SFT) |
+ (0x1 << NAU8325_BIASEN_SFT) | 0x3);
+
+ /* Enable ALC to avoid signal distortion when battery low. */
+ if (nau8325->alc_enable)
+ regmap_update_bits(regmap, NAU8325_R2E_ALC_CTRL3,
+ NAU8325_ALC_EN, NAU8325_ALC_EN);
+ if (nau8325->clock_det_data)
+ regmap_update_bits(regmap, NAU8325_R40_CLK_DET_CTRL,
+ NAU8325_APWRUP_EN, NAU8325_APWRUP_EN);
+ else
+ regmap_update_bits(regmap, NAU8325_R40_CLK_DET_CTRL,
+ NAU8325_APWRUP_EN, 0);
+ if (nau8325->clock_detection)
+ regmap_update_bits(regmap, NAU8325_R40_CLK_DET_CTRL,
+ NAU8325_CLKPWRUP_DIS |
+ NAU8325_PWRUP_DFT, 0);
+ else
+ regmap_update_bits(regmap, NAU8325_R40_CLK_DET_CTRL,
+ NAU8325_CLKPWRUP_DIS | NAU8325_PWRUP_DFT,
+ NAU8325_CLKPWRUP_DIS);
+ regmap_update_bits(regmap, NAU8325_R29_DAC_CTRL1,
+ NAU8325_DAC_OVERSAMPLE_MASK,
+ NAU8325_DAC_OVERSAMPLE_128);
+}
+
+static void nau8325_print_device_properties(struct nau8325 *nau8325)
+{
+ struct device *dev = nau8325->dev;
+
+ dev_dbg(dev, "vref-impedance-ohms: %d", nau8325->vref_impedance_ohms);
+ dev_dbg(dev, "dac-vref-microvolt: %d", nau8325->dac_vref_microvolt);
+ dev_dbg(dev, "alc-enable: %d", nau8325->alc_enable);
+ dev_dbg(dev, "clock-det-data: %d", nau8325->clock_det_data);
+ dev_dbg(dev, "clock-detection-disable: %d", nau8325->clock_detection);
+}
+
+static int nau8325_read_device_properties(struct device *dev,
+ struct nau8325 *nau8325)
+{
+ int ret;
+
+ nau8325->alc_enable =
+ device_property_read_bool(dev, "nuvoton,alc-enable");
+ nau8325->clock_det_data =
+ device_property_read_bool(dev, "nuvoton,clock-det-data");
+ nau8325->clock_detection =
+ !device_property_read_bool(dev, "nuvoton,clock-detection-disable");
+
+ ret = device_property_read_u32(dev, "nuvoton,vref-impedance-ohms",
+ &nau8325->vref_impedance_ohms);
+ if (ret)
+ nau8325->vref_impedance_ohms = 125000;
+ ret = device_property_read_u32(dev, "nuvoton,dac-vref-microvolt",
+ &nau8325->dac_vref_microvolt);
+ if (ret)
+ nau8325->dac_vref_microvolt = 2880000;
+
+ return 0;
+}
+
+static int nau8325_i2c_probe(struct i2c_client *i2c,
+ const struct i2c_device_id *id)
+{
+ struct device *dev = &i2c->dev;
+ struct nau8325 *nau8325 = dev_get_platdata(dev);
+ int ret, value;
+
+ if (!nau8325) {
+ nau8325 = devm_kzalloc(dev, sizeof(*nau8325), GFP_KERNEL);
+ if (!nau8325) {
+ ret = -ENOMEM;
+ goto err;
+ }
+ ret = nau8325_read_device_properties(dev, nau8325);
+ if (ret)
+ goto err;
+ }
+ i2c_set_clientdata(i2c, nau8325);
+
+ nau8325->regmap = devm_regmap_init_i2c(i2c, &nau8325_regmap_config);
+ if (IS_ERR(nau8325->regmap)) {
+ ret = PTR_ERR(nau8325->regmap);
+ goto err;
+ }
+ nau8325->dev = dev;
+ nau8325_print_device_properties(nau8325);
+
+ nau8325_reset_chip(nau8325->regmap);
+ ret = regmap_read(nau8325->regmap, NAU8325_R02_DEVICE_ID, &value);
+ if (ret) {
+ dev_dbg(dev, "Failed to read device id (%d)", ret);
+ goto err;
+ }
+ nau8325_init_regs(nau8325);
+
+ ret = devm_snd_soc_register_component(dev, &nau8325_component_driver,
+ &nau8325_dai, 1);
+err:
+ return ret;
+}
+
+static const struct i2c_device_id nau8325_i2c_ids[] = {
+ { "nau8325", 0 },
+ { }
+};
+MODULE_DEVICE_TABLE(i2c, nau8325_i2c_ids);
+
+#ifdef CONFIG_OF
+static const struct of_device_id nau8325_of_ids[] = {
+ { .compatible = "nuvoton,nau8325", },
+ {}
+};
+MODULE_DEVICE_TABLE(of, nau8325_of_ids);
+#endif
+
+static struct i2c_driver nau8325_i2c_driver = {
+ .driver = {
+ .name = "nau8325",
+ .of_match_table = of_match_ptr(nau8325_of_ids),
+ },
+ .probe = nau8325_i2c_probe,
+ .id_table = nau8325_i2c_ids,
+};
+module_i2c_driver(nau8325_i2c_driver);
+
+MODULE_DESCRIPTION("ASoC NAU8325 driver");
+MODULE_AUTHOR("Seven Lee <WTLI@nuvoton.com>");
+MODULE_AUTHOR("David Lin <CTLIN0@nuvoton.com>");
+MODULE_LICENSE("GPL");
new file mode 100644
@@ -0,0 +1,391 @@
+/* SPDX-License-Identifier: GPL-2.0 */
+/*
+ * nau8325.h -- Nuvoton NAU8325 audio codec driver
+ *
+ * Copyright 2023 Nuvoton Technology Crop.
+ * Author: Seven Lee <WTLI@nuvoton.com>
+ * David Lin <CTLIN0@nuvoton.com>
+ */
+
+#ifndef __NAU8325_H__
+#define __NAU8325_H__
+
+#define NAU8325_R00_HARDWARE_RST 0x00
+#define NAU8325_R01_SOFTWARE_RST 0x01
+#define NAU8325_R02_DEVICE_ID 0x02
+#define NAU8325_R03_CLK_CTRL 0x03
+#define NAU8325_R04_ENA_CTRL 0x04
+#define NAU8325_R05_INTERRUPT_CTRL 0x05
+#define NAU8325_R06_INT_CLR_STATUS 0x06
+#define NAU8325_R09_IRQOUT 0x09
+#define NAU8325_R0A_IO_CTRL 0x0a
+#define NAU8325_R0B_PDM_CTRL 0x0b
+#define NAU8325_R0C_TDM_CTRL 0x0c
+#define NAU8325_R0D_I2S_PCM_CTRL1 0x0d
+#define NAU8325_R0E_I2S_PCM_CTRL2 0x0e
+#define NAU8325_R0F_L_TIME_SLOT 0x0f
+#define NAU8325_R10_R_TIME_SLOT 0x10
+#define NAU8325_R11_HPF_CTRL 0x11
+#define NAU8325_R12_MUTE_CTRL 0x12
+#define NAU8325_R13_DAC_VOLUME 0x13
+#define NAU8325_R1D_DEBUG_READ1 0x1d
+#define NAU8325_R1F_DEBUG_READ2 0x1f
+#define NAU8325_R22_DEBUG_READ3 0x22
+#define NAU8325_R29_DAC_CTRL1 0x29
+#define NAU8325_R2A_DAC_CTRL2 0x2a
+#define NAU8325_R2C_ALC_CTRL1 0x2c
+#define NAU8325_R2D_ALC_CTRL2 0x2d
+#define NAU8325_R2E_ALC_CTRL3 0x2e
+#define NAU8325_R2F_ALC_CTRL4 0x2f
+#define NAU8325_R40_CLK_DET_CTRL 0x40
+#define NAU8325_R49_TEST_STATUS 0x49
+#define NAU8325_R4A_ANALOG_READ 0x4a
+#define NAU8325_R50_MIXER_CTRL 0x50
+#define NAU8325_R55_MISC_CTRL 0x55
+#define NAU8325_R60_BIAS_ADJ 0x60
+#define NAU8325_R61_ANALOG_CONTROL_1 0x61
+#define NAU8325_R62_ANALOG_CONTROL_2 0x62
+#define NAU8325_R63_ANALOG_CONTROL_3 0x63
+#define NAU8325_R64_ANALOG_CONTROL_4 0x64
+#define NAU8325_R65_ANALOG_CONTROL_5 0x65
+#define NAU8325_R66_ANALOG_CONTROL_6 0x66
+#define NAU8325_R69_CLIP_CTRL 0x69
+#define NAU8325_R73_RDAC 0x73
+#define NAU8325_REG_MAX NAU8325_R73_RDAC
+
+/* 16-bit control register address, and 16-bits control register data */
+#define NAU8325_REG_ADDR_LEN 16
+#define NAU8325_REG_DATA_LEN 16
+
+/* CLK_CTRL (0x03) */
+#define NAU8325_CLK_DAC_SRC_SFT 12
+#define NAU8325_CLK_DAC_SRC_MASK (0x3 << NAU8325_CLK_DAC_SRC_SFT)
+#define NAU8325_CLK_MUL_SRC_SFT 6
+#define NAU8325_CLK_MUL_SRC_MASK (0x3 << NAU8325_CLK_MUL_SRC_SFT)
+#define NAU8325_MCLK_SEL_SFT 3
+#define NAU8325_MCLK_SEL_MASK (0x7 << NAU8325_MCLK_SEL_SFT)
+#define NAU8325_MCLK_SRC_MASK 0x7
+
+/* ENA_CTRL (0x04) */
+#define NAU8325_DAC_LEFT_CH_EN_SFT 3
+#define NAU8325_DAC_LEFT_CH_EN (0x1 << NAU8325_DAC_LEFT_CH_EN_SFT)
+#define NAU8325_DAC_RIGHT_CH_EN_SFT 2
+#define NAU8325_DAC_RIGHT_CH_EN (0x1 << NAU8325_DAC_RIGHT_CH_EN_SFT)
+
+/* INTERRUPT_CTRL (0x05) */
+#define NAU8325_ARP_DWN_INT_SFT 12
+#define NAU8325_ARP_DWN_INT_MASK (0x1 << NAU8325_ARP_DWN_INT_SFT)
+#define NAU8325_CLIP_INT_SFT 11
+#define NAU8325_CLIP_INT_MASK (0x1 << NAU8325_CLIP_INT_SFT)
+#define NAU8325_LVD_INT_SFT 10
+#define NAU8325_LVD_INT_MASK (0x1 << NAU8325_LVD_INT_SFT)
+#define NAU8325_PWR_INT_DIS_SFT 8
+#define NAU8325_PWR_INT_DIS (0x1 << NAU8325_PWR_INT_DIS_SFT)
+#define NAU8325_OCP_OTP_SHTDWN_INT_SFT 4
+#define NAU8325_OCP_OTP_SHTDWN_INT_MASK (0x1 << NAU8325_OCP_OTP_SHTDWN_INT_SFT)
+#define NAU8325_CLIP_INT_DIS_SFT 3
+#define NAU8325_CLIP_INT_DIS (0x1 << NAU8325_CLIP_INT_DIS_SFT)
+#define NAU8325_LVD_INT_DIS_SFT 2
+#define NAU8325_LVD_INT_DIS (0x1 << NAU8325_LVD_INT_DIS_SFT)
+#define NAU8325_PWR_INT_MASK 0x1
+
+/* INT_CLR_STATUS (0x06) */
+#define NAU8325_INT_STATUS_MASK 0x7f
+
+/* IRQOUT (0x9) */
+#define NAU8325_IRQOUT_SEL_SEF 12
+#define NAU8325_IRQOUT_SEL_MASK (0xf << NAU8325_IRQOUT_SEL_SEF)
+#define NAU8325_DEM_DITH_SFT 7
+#define NAU8325_DEM_DITH_EN (0x1 << NAU8325_DEM_DITH_SFT)
+#define NAU8325_GAINZI3_SFT 5
+#define NAU8325_GAINZI3_MASK (0x1 << NAU8325_GAINZI3_SFT)
+#define NAU8325_GAINZI2_MASK 0x1f
+
+/* IO_CTRL (0x0a) */
+#define NAU8325_IRQ_PL_SFT 15
+#define NAU8325_IRQ_PL_ACT_HIGH (0x1 << NAU8325_IRQ_PL_SFT)
+#define NAU8325_IRQ_PS_SFT 14
+#define NAU8325_IRQ_PS_UP (0x1 << NAU8325_IRQ_PS_SFT)
+#define NAU8325_IRQ_PE_SFT 13
+#define NAU8325_IRQ_PE_EN (0x1 << NAU8325_IRQ_PE_SFT)
+#define NAU8325_IRQ_DS_SFT 12
+#define NAU8325_IRQ_DS_HIGH (0x1 << NAU8325_IRQ_DS_SFT)
+#define NAU8325_IRQ_OUTPUT_SFT 11
+#define NAU8325_IRQ_OUTPUT_EN (0x1 << NAU8325_IRQ_OUTPUT_SFT)
+#define NAU8325_IRQ_PIN_DEBUG_SFT 10
+#define NAU8325_IRQ_PIN_DEBUG_EN (0x1 << NAU8325_IRQ_PIN_DEBUG_SFT)
+
+/* PDM_CTRL (0x0b) */
+#define NAU8325_PDM_LCH_EDGE_SFT 1
+#define NAU8325_PDM_LCH_EDGE__MASK (0x1 << NAU8325_PDM_LCH_EDGE_SFT)
+#define NAU8325_PDM_MODE_EN 0x1
+
+/* TDM_CTRL (0x0c) */
+#define NAU8325_TDM_SFT 15
+#define NAU8325_TDM_EN (0x1 << NAU8325_TDM_SFT)
+#define NAU8325_PCM_OFFSET_CTRL_SFT 14
+#define NAU8325_PCM_OFFSET_CTRL_EN (0x1 << NAU8325_PCM_OFFSET_CTRL_SFT)
+#define NAU8325_DAC_LEFT_SFT 6
+#define NAU8325_NAU8325_DAC_LEFT_MASK (0x7 << NAU8325_DAC_LEFT_SFT)
+#define NAU8325_DAC_RIGHT_SFT 3
+#define NAU8325_DAC_RIGHT_MASK (0x7 << NAU8325_DAC_RIGHT_SFT)
+
+/* I2S_PCM_CTRL1 (0x0d) */
+#define NAU8325_DACCM_CTL_SFT 14
+#define NAU8325_DACCM_CTL_MASK (0x3 << NAU8325_DACCM_CTL_SFT)
+#define NAU8325_CMB8_0_SFT 10
+#define NAU8325_CMB8_0_MASK (0x1 << NAU8325_CMB8_0_SFT)
+#define NAU8325_UA_OFFSET_SFT 9
+#define NAU8325_UA_OFFSET_MASK (0x1 << NAU8325_UA_OFFSET_SFT)
+#define NAU8325_I2S_BP_SFT 7
+#define NAU8325_I2S_BP_MASK (0x1 << NAU8325_I2S_BP_SFT)
+#define NAU8325_I2S_BP_INV (0x1 << NAU8325_I2S_BP_SFT)
+#define NAU8325_I2S_PCMB_SFT 6
+#define NAU8325_I2S_PCMB_EN (0x1 << NAU8325_I2S_PCMB_SFT)
+#define NAU8325_I2S_DACPSHS0_SFT 5
+#define NAU8325_I2S_DACPSHS0_MASK (0x1 << NAU8325_I2S_DACPSHS0_SFT)
+#define NAU8325_I2S_DL_SFT 2
+#define NAU8325_I2S_DL_MASK (0x3 << NAU8325_I2S_DL_SFT)
+#define NAU8325_I2S_DL_32 (0x3 << NAU8325_I2S_DL_SFT)
+#define NAU8325_I2S_DL_24 (0x2 << NAU8325_I2S_DL_SFT)
+#define NAU8325_I2S_DL_20 (0x1 << NAU8325_I2S_DL_SFT)
+#define NAU8325_I2S_DL_16 (0x0 << NAU8325_I2S_DL_SFT)
+#define NAU8325_I2S_DF_MASK 0x3
+#define NAU8325_I2S_DF_RIGTH 0x0
+#define NAU8325_I2S_DF_LEFT 0x1
+#define NAU8325_I2S_DF_I2S 0x2
+#define NAU8325_I2S_DF_PCM_AB 0x3
+
+/* I2S_PCM_CTRL2 (0x0e) */
+#define NAU8325_PCM_TS_SFT 10
+#define NAU8325_PCM_TS_EN (0x1 << NAU8325_PCM_TS_SFT)
+#define NAU8325_PCM8BIT0_SFT 8
+#define NAU8325_PCM8BIT0_MASK (0x1 << NAU8325_PCM8BIT0_SFT)
+
+/* L_TIME_SLOT (0x0f)*/
+#define NAU8325_SHORT_FS_DET_SFT 13
+#define NAU8325_SHORT_FS_DET_DIS (0x1 << NAU8325_SHORT_FS_DET_SFT)
+#define NAU8325_TSLOT_L0_MASK 0x3ff
+
+/* R_TIME_SLOT (0x10)*/
+#define NAU8325_TSLOT_R0_MASK 0x3ff
+
+/* HPF_CTRL (0x11)*/
+#define NAU8325_DAC_HPF_SFT 15
+#define NAU8325_DAC_HPF_EN (0x1 << NAU8325_DAC_HPF_SFT)
+#define NAU8325_DAC_HPF_APP_SFT 14
+#define NAU8325_DAC_HPF_APP_MASK (0x1 << NAU8325_DAC_HPF_APP_SFT)
+#define NAU8325_DAC_HPF_FCUT_SFT 11
+#define NAU8325_DAC_HPF_FCUT_MASK (0x7 << NAU8325_DAC_HPF_FCUT_SFT)
+
+/* MUTE_CTRL (0x12)*/
+#define NAU8325_SOFT_MUTE_SFT 15
+#define NAU8325_SOFT_MUTE (0x1 << NAU8325_SOFT_MUTE_SFT)
+#define NAU8325_DAC_ZC_SFT 8
+#define NAU8325_DAC_ZC_EN (0x1 << NAU8325_DAC_ZC_SFT)
+#define NAU8325_UNMUTE_CTL_SFT 6
+#define NAU8325_UNMUTE_CTL_MASK (0x3 << NAU8325_UNMUTE_CTL_SFT)
+#define NAU8325_ANA_MUTE_SFT 4
+#define NAU8325_ANA_MUTE_MASK (0x3 << NAU8325_ANA_MUTE_SFT)
+#define NAU8325_AUTO_MUTE_SFT 3
+#define NAU8325_AUTO_MUTE_DIS (0x1 << NAU8325_AUTO_MUTE_SFT)
+
+/* DAC_VOLUME (0x13) */
+#define NAU8325_DAC_VOLUME_L_SFT 8
+#define NAU8325_DAC_VOLUME_L_EN (0xff << NAU8325_DAC_VOLUME_L_SFT)
+#define NAU8325_DAC_VOLUME_R_SFT 0
+#define NAU8325_DAC_VOLUME_R_EN (0xff << NAU8325_DAC_VOLUME_R_SFT)
+#define NAU8325_DAC_VOL_MAX 0xff
+
+/* DEBUG_READ1 (0x1d)*/
+#define NAU8325_OSR100_MASK (0x1 << 6)
+#define NAU8325_MIPS500_MASK (0x1 << 5)
+#define NAU8325_SHUTDWNDRVR_R_MASK (0x1 << 4)
+#define NAU8325_SHUTDWNDRVR_L_MASK (0x1 << 3)
+#define NAU8325_MUTEB_MASK (0x1 << 2)
+#define NAU8325_PDOSCB_MASK (0x1 << 1)
+#define NAU8325_POWERDOWN1B_D_MASK 0x1
+
+/* DEBUG_READ2 (0x1f)*/
+#define NAU8325_R_CHANNEL_Vol_SFT 8
+#define NAU8325_R_CHANNEL_Vol_MASK (0xff << NAU8325_R_CHANNEL_Vol_SFT)
+#define NAU8325_L_CHANNEL_Vol_MASK 0xff
+
+/* DEBUG_READ3(0x22)*/
+#define NAU8325_PGAL_GAIN_MASK (0x3f << 7)
+#define NAU8325_CLIP_MASK (0x1 << 6)
+#define NAU8325_SCAN_MODE_MASK (0x1 << 5)
+#define NAU8325_SDB_MASK (0x1 << 4)
+#define NAU8325_TALARM_MASK (0x1 << 3)
+#define NAU8325_SHORTR_MASK (0x1 << 2)
+#define NAU8325_SHORTL_MASK (0x1 << 1)
+#define NAU8325_TMDET_MASK 0x1
+
+/* DAC_CTRL1 (0x29) */
+#define NAU8325_DAC_OVERSAMPLE_SFT 0
+#define NAU8325_DAC_OVERSAMPLE_MASK 0x7
+#define NAU8325_DAC_OVERSAMPLE_256 1
+#define NAU8325_DAC_OVERSAMPLE_128 2
+#define NAU8325_DAC_OVERSAMPLE_64 0
+#define NAU8325_DAC_OVERSAMPLE_32 4
+
+/* ALC_CTRL1 (0x2c) */
+#define NAU8325_ALC_MAXGAIN_SFT 5
+#define NAU8325_ALC_MAXGAIN_MAX 0x7
+#define NAU8325_ALC_MAXGAIN_MASK (0x7 << NAU8325_ALC_MAXGAIN_SFT)
+#define NAU8325_ALC_MINGAIN_MAX 4
+#define NAU8325_ALC_MINGAIN_SFT 1
+#define NAU8325_ALC_MINGAIN_MASK (0x7 << NAU8325_ALC_MINGAIN_SFT)
+
+/* ALC_CTRL2 (0x2d) */
+#define NAU8325_ALC_DCY_SFT 12
+#define NAU8325_ALC_DCY_MAX 0xb
+#define NAU8325_ALC_DCY_MASK (0xf << NAU8325_ALC_DCY_SFT)
+#define NAU8325_ALC_ATK_SFT 8
+#define NAU8325_ALC_ATK_MAX 0xb
+#define NAU8325_ALC_ATK_MASK (0xf << NAU8325_ALC_ATK_SFT)
+#define NAU8325_ALC_HLD_SFT 4
+#define NAU8325_ALC_HLD_MAX 0xa
+#define NAU8325_ALC_HLD_MASK (0xf << NAU8325_ALC_HLD_SFT)
+#define NAU8325_ALC_LVL_SFT 0
+#define NAU8325_ALC_LVL_MAX 0xf
+#define NAU8325_ALC_LVL_MASK 0xf
+
+/* ALC_CTRL3 (0x2e) */
+#define NAU8325_ALC_EN_SFT 15
+#define NAU8325_ALC_EN (0x1 << NAU8325_ALC_EN_SFT)
+
+/* TEMP_COMP_CTRL (0x30) */
+#define NAU8325_TEMP_COMP_ACT2_MASK 0xff
+
+/* LPF_CTRL (0x33) */
+#define NAU8325_LPF_IN1_EN_SFT 15
+#define NAU8325_LPF_IN1_EN (0x1 << NAU8325_LPF_IN1_EN_SFT)
+#define NAU8325_LPF_IN1_TC_SFT 11
+#define NAU8325_LPF_IN1_TC_MASK (0xf << NAU8325_LPF_IN1_TC_SFT)
+#define NAU8325_LPF_IN2_EN_SFT 10
+#define NAU8325_LPF_IN2_EN (0x1 << NAU8325_LPF_IN2_EN_SFT)
+#define NAU8325_LPF_IN2_TC_SFT 6
+#define NAU8325_LPF_IN2_TC_MASK (0xf << NAU8325_LPF_IN2_TC_SFT)
+
+/* CLK_DET_CTRL (0x40) */
+#define NAU8325_APWRUP_SFT 15
+#define NAU8325_APWRUP_EN (0x1 << NAU8325_APWRUP_SFT)
+#define NAU8325_CLKPWRUP_SFT 14
+#define NAU8325_CLKPWRUP_DIS (0x1 << NAU8325_CLKPWRUP_SFT)
+#define NAU8325_PWRUP_DFT_SFT 13
+#define NAU8325_PWRUP_DFT (0x1 << NAU8325_PWRUP_DFT_SFT)
+#define NAU8325_REG_SRATE_SFT 10
+#define NAU8325_REG_SRATE_MASK (0x7 << NAU8325_REG_SRATE_SFT)
+#define NAU8325_REG_ALT_SRATE_SFT 9
+#define NAU8325_REG_ALT_SRATE_EN (0x1 << NAU8325_REG_ALT_SRATE_SFT)
+#define NAU8325_REG_DIV_MAX 0x1
+
+/* BIAS_ADJ (0x60) */
+#define NAU8325_BIAS_VMID_SEL_SFT 4
+#define NAU8325_BIAS_VMID_SEL_MASK (0x3 << NAU8325_BIAS_VMID_SEL_SFT)
+
+/* ANALOG_CONTROL_1 (0x61) */
+#define NAU8325_VMDFSTENB_SFT 14
+#define NAU8325_VMDFSTENB_MASK (0x3 << NAU8325_VMDFSTENB_SFT)
+#define NAU8325_CLASSDEN_SFT 12
+#define NAU8325_CLASSDEN_MASK (0x3 << NAU8325_CLASSDEN_SFT)
+#define NAU8325_DACCLKEN_R_SFT 10
+#define NAU8325_DACCLKEN_R_MASK (0x3 << NAU8325_DACCLKEN_R_SFT)
+#define NAU8325_DACEN_R_SFT 8
+#define NAU8325_DACEN_R_MASK (0x3 << NAU8325_DACEN_R_SFT)
+#define NAU8325_DACCLKEN_SFT 6
+#define NAU8325_DACCLKEN_MASK (0x3 << NAU8325_DACCLKEN_SFT)
+#define NAU8325_DACEN_SFT 4
+#define NAU8325_DACEN_MASK (0x3 << NAU8325_DACEN_SFT)
+#define NAU8325_BIASEN_SFT 2
+#define NAU8325_BIASEN_MASK (0x3 << NAU8325_BIASEN_SFT)
+#define NAU8325_VMIDEN_MASK 0x3
+
+/* ANALOG_CONTROL_2 (0x62) */
+#define NAU8325_PWMMOD_SFT 14
+#define NAU8325_PWMMOD_MASK (0x1 << NAU8325_PWMMOD_SFT)
+#define NAU8325_DACTEST_SFT 6
+#define NAU8325_DACTEST_MASK (0x3 << NAU8325_DACTEST_SFT)
+#define NAU8325_DACREFCAP_SFT 4
+#define NAU8325_DACREFCAP_MASK (0x3 << NAU8325_DACREFCAP_SFT)
+
+/* ANALOG_CONTROL_3 (0x63) */
+#define NAU8325_POWER_DOWN_L_SFT 12
+#define NAU8325_POWER_DOWN_L_MASK (0x3 << NAU8325_POWER_DOWN_L_SFT)
+#define NAU8325_POWER_DOWN_R_SFT 11
+#define NAU8325_POWER_DOWN_R_MASK (0x3 << NAU8325_DACREFCAP_SFT)
+#define NAU8325_CLASSD_FINE_SFT 5
+#define NAU8325_CLASSD_FINE_MASK (0x3 << NAU8325_CLASSD_FINE_SFT)
+#define NAU8325_CLASSD_COARSE_GAIN_MASK 0xf
+
+/* ANALOG_CONTROL_4 (0x64) */
+#define NAU8325_CLASSD_OCPN_SFT 12
+#define NAU8325_CLASSD_OCPN_MASK (0xf << NAU8325_CLASSD_OCPN_SFT)
+#define NAU8325_CLASSD_OCPP_SFT 8
+#define NAU8325_CLASSD_OCPP_MASK (0xf << NAU8325_CLASSD_OCPP_SFT)
+#define NAU8325_CLASSD_SLEWN_MASK 0xff
+
+/* ANALOG_CONTROL_5 (0x65) */
+#define NAU8325_MCLK_RANGE_SFT 2
+#define NAU8325_MCLK_RANGE_EN (0x1 << NAU8325_MCLK_RANGE_SFT)
+#define NAU8325_MCLK8XEN_SFT 1
+#define NAU8325_MCLK8XEN_EN (0x1 << NAU8325_MCLK8XEN_SFT)
+#define NAU8325_MCLK4XEN_EN 0x1
+
+/* ANALOG_CONTROL_6 (0x66) */
+#define NAU8325_VBATLOW_SFT 4
+#define NAU8325_VBATLOW_MASK (0x1 << NAU8325_VBATLOW_SFT)
+#define NAU8325_VDDSPK_LIM_SFT 3
+#define NAU8325_VDDSPK_LIM_EN (0x1 << NAU8325_VDDSPK_LIM_SFT)
+#define NAU8325_VDDSPK_LIM_MASK 0x7
+
+/* CLIP_CTRL (0x69)*/
+#define NAU8325_ANTI_CLIP_SFT 4
+#define NAU8325_ANTI_CLIP_EN (0x1 << NAU8325_ANTI_CLIP_SFT)
+
+/* RDAC (0x73) */
+#define NAU8325_CLK_DAC_DELAY_SFT 4
+#define NAU8325_CLK_DAC_DELAY_EN (0x7 << NAU8325_CLK_DAC_DELAY_SFT)
+#define NAU8325_DACVREFSEL_SFT 2
+#define NAU8325_DACVREFSEL_MASK (0x3 << NAU8325_DACVREFSEL_SFT)
+
+#define NAU8325_CODEC_DAI "nau8325-hifi"
+
+struct nau8325 {
+ struct device *dev;
+ struct regmap *regmap;
+ int mclk;
+ int fs;
+ int vref_impedance_ohms;
+ int dac_vref_microvolt;
+ int clock_detection;
+ int clock_det_data;
+ int alc_enable;
+};
+
+struct nau8325_src_attr {
+ int param;
+ unsigned int val;
+};
+
+enum {
+ NAU8325_MCLK_FS_RATIO_256,
+ NAU8325_MCLK_FS_RATIO_400,
+ NAU8325_MCLK_FS_RATIO_500,
+ NAU8325_MCLK_FS_RATIO_NUM,
+};
+
+struct nau8325_srate_attr {
+ int fs;
+ int range;
+ bool max;
+ unsigned int mclk_src[NAU8325_MCLK_FS_RATIO_NUM];
+};
+
+struct nau8325_osr_attr {
+ unsigned int osr;
+ unsigned int clk_src;
+};
+
+#endif /* __NAU8325_H__ */
The driver is for amplifiers NAU8325 of Nuvoton Technology Corporation. The NAU8325 is a stereo high efficiency filter-free Class-D audio amplifier, which is capable of driving a 4ohm load with up to 3W output power. Signed-off-by: Seven Lee <wtli@nuvoton.com> --- sound/soc/codecs/nau8325.c | 900 +++++++++++++++++++++++++++++++++++++ sound/soc/codecs/nau8325.h | 391 ++++++++++++++++ 2 files changed, 1291 insertions(+) create mode 100644 sound/soc/codecs/nau8325.c create mode 100644 sound/soc/codecs/nau8325.h