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-rw-r--r--sound/soc/codecs/nau8821.c1815
1 files changed, 1815 insertions, 0 deletions
diff --git a/sound/soc/codecs/nau8821.c b/sound/soc/codecs/nau8821.c
new file mode 100644
index 000000000..efd92656a
--- /dev/null
+++ b/sound/soc/codecs/nau8821.c
@@ -0,0 +1,1815 @@
+// SPDX-License-Identifier: GPL-2.0-only
+//
+// nau8821.c -- Nuvoton NAU88L21 audio codec driver
+//
+// Copyright 2021 Nuvoton Technology Corp.
+// Author: John Hsu <kchsu0@nuvoton.com>
+// Co-author: Seven Lee <wtli@nuvoton.com>
+//
+
+#include <linux/acpi.h>
+#include <linux/clk.h>
+#include <linux/delay.h>
+#include <linux/dmi.h>
+#include <linux/init.h>
+#include <linux/i2c.h>
+#include <linux/module.h>
+#include <linux/math64.h>
+#include <linux/regmap.h>
+#include <linux/slab.h>
+#include <sound/core.h>
+#include <sound/initval.h>
+#include <sound/jack.h>
+#include <sound/pcm.h>
+#include <sound/pcm_params.h>
+#include <sound/soc.h>
+#include <sound/tlv.h>
+#include "nau8821.h"
+
+#define NAU8821_JD_ACTIVE_HIGH BIT(0)
+
+static int nau8821_quirk;
+static int quirk_override = -1;
+module_param_named(quirk, quirk_override, uint, 0444);
+MODULE_PARM_DESC(quirk, "Board-specific quirk override");
+
+#define NAU_FREF_MAX 13500000
+#define NAU_FVCO_MAX 100000000
+#define NAU_FVCO_MIN 90000000
+
+#define NAU8821_BUTTON SND_JACK_BTN_0
+
+/* the maximum frequency of CLK_ADC and CLK_DAC */
+#define CLK_DA_AD_MAX 6144000
+
+static int nau8821_configure_sysclk(struct nau8821 *nau8821,
+ int clk_id, unsigned int freq);
+static bool nau8821_is_jack_inserted(struct regmap *regmap);
+
+struct nau8821_fll {
+ int mclk_src;
+ int ratio;
+ int fll_frac;
+ int fll_int;
+ int clk_ref_div;
+};
+
+struct nau8821_fll_attr {
+ unsigned int param;
+ unsigned int val;
+};
+
+/* scaling for mclk from sysclk_src output */
+static const struct nau8821_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 nau8821_fll_attr fll_ratio[] = {
+ { 512000, 0x01 },
+ { 256000, 0x02 },
+ { 128000, 0x04 },
+ { 64000, 0x08 },
+ { 32000, 0x10 },
+ { 8000, 0x20 },
+ { 4000, 0x40 },
+};
+
+static const struct nau8821_fll_attr fll_pre_scalar[] = {
+ { 0, 0x0 },
+ { 1, 0x1 },
+ { 2, 0x2 },
+ { 3, 0x3 },
+};
+
+/* over sampling rate */
+struct nau8821_osr_attr {
+ unsigned int osr;
+ unsigned int clk_src;
+};
+
+static const struct nau8821_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 nau8821_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 */
+};
+
+struct nau8821_dmic_speed {
+ unsigned int param;
+ unsigned int val;
+};
+
+static const struct nau8821_dmic_speed dmic_speed_sel[] = {
+ { 0, 0x0 }, /*SPEED 1, SRC 1 */
+ { 1, 0x1 }, /*SPEED 2, SRC 1/2 */
+ { 2, 0x2 }, /*SPEED 4, SRC 1/4 */
+ { 3, 0x3 }, /*SPEED 8, SRC 1/8 */
+};
+
+static const struct reg_default nau8821_reg_defaults[] = {
+ { NAU8821_R01_ENA_CTRL, 0x00ff },
+ { NAU8821_R03_CLK_DIVIDER, 0x0050 },
+ { NAU8821_R04_FLL1, 0x0 },
+ { NAU8821_R05_FLL2, 0x00bc },
+ { NAU8821_R06_FLL3, 0x0008 },
+ { NAU8821_R07_FLL4, 0x0010 },
+ { NAU8821_R08_FLL5, 0x4000 },
+ { NAU8821_R09_FLL6, 0x6900 },
+ { NAU8821_R0A_FLL7, 0x0031 },
+ { NAU8821_R0B_FLL8, 0x26e9 },
+ { NAU8821_R0D_JACK_DET_CTRL, 0x0 },
+ { NAU8821_R0F_INTERRUPT_MASK, 0x0 },
+ { NAU8821_R12_INTERRUPT_DIS_CTRL, 0xffff },
+ { NAU8821_R13_DMIC_CTRL, 0x0 },
+ { NAU8821_R1A_GPIO12_CTRL, 0x0 },
+ { NAU8821_R1B_TDM_CTRL, 0x0 },
+ { NAU8821_R1C_I2S_PCM_CTRL1, 0x000a },
+ { NAU8821_R1D_I2S_PCM_CTRL2, 0x8010 },
+ { NAU8821_R1E_LEFT_TIME_SLOT, 0x0 },
+ { NAU8821_R1F_RIGHT_TIME_SLOT, 0x0 },
+ { NAU8821_R21_BIQ0_COF1, 0x0 },
+ { NAU8821_R22_BIQ0_COF2, 0x0 },
+ { NAU8821_R23_BIQ0_COF3, 0x0 },
+ { NAU8821_R24_BIQ0_COF4, 0x0 },
+ { NAU8821_R25_BIQ0_COF5, 0x0 },
+ { NAU8821_R26_BIQ0_COF6, 0x0 },
+ { NAU8821_R27_BIQ0_COF7, 0x0 },
+ { NAU8821_R28_BIQ0_COF8, 0x0 },
+ { NAU8821_R29_BIQ0_COF9, 0x0 },
+ { NAU8821_R2A_BIQ0_COF10, 0x0 },
+ { NAU8821_R2B_ADC_RATE, 0x0002 },
+ { NAU8821_R2C_DAC_CTRL1, 0x0082 },
+ { NAU8821_R2D_DAC_CTRL2, 0x0 },
+ { NAU8821_R2F_DAC_DGAIN_CTRL, 0x0 },
+ { NAU8821_R30_ADC_DGAIN_CTRL, 0x0 },
+ { NAU8821_R31_MUTE_CTRL, 0x0 },
+ { NAU8821_R32_HSVOL_CTRL, 0x0 },
+ { NAU8821_R34_DACR_CTRL, 0xcfcf },
+ { NAU8821_R35_ADC_DGAIN_CTRL1, 0xcfcf },
+ { NAU8821_R36_ADC_DRC_KNEE_IP12, 0x1486 },
+ { NAU8821_R37_ADC_DRC_KNEE_IP34, 0x0f12 },
+ { NAU8821_R38_ADC_DRC_SLOPES, 0x25ff },
+ { NAU8821_R39_ADC_DRC_ATKDCY, 0x3457 },
+ { NAU8821_R3A_DAC_DRC_KNEE_IP12, 0x1486 },
+ { NAU8821_R3B_DAC_DRC_KNEE_IP34, 0x0f12 },
+ { NAU8821_R3C_DAC_DRC_SLOPES, 0x25f9 },
+ { NAU8821_R3D_DAC_DRC_ATKDCY, 0x3457 },
+ { NAU8821_R41_BIQ1_COF1, 0x0 },
+ { NAU8821_R42_BIQ1_COF2, 0x0 },
+ { NAU8821_R43_BIQ1_COF3, 0x0 },
+ { NAU8821_R44_BIQ1_COF4, 0x0 },
+ { NAU8821_R45_BIQ1_COF5, 0x0 },
+ { NAU8821_R46_BIQ1_COF6, 0x0 },
+ { NAU8821_R47_BIQ1_COF7, 0x0 },
+ { NAU8821_R48_BIQ1_COF8, 0x0 },
+ { NAU8821_R49_BIQ1_COF9, 0x0 },
+ { NAU8821_R4A_BIQ1_COF10, 0x0 },
+ { NAU8821_R4B_CLASSG_CTRL, 0x0 },
+ { NAU8821_R4C_IMM_MODE_CTRL, 0x0 },
+ { NAU8821_R4D_IMM_RMS_L, 0x0 },
+ { NAU8821_R53_OTPDOUT_1, 0xaad8 },
+ { NAU8821_R54_OTPDOUT_2, 0x0002 },
+ { NAU8821_R55_MISC_CTRL, 0x0 },
+ { NAU8821_R66_BIAS_ADJ, 0x0 },
+ { NAU8821_R68_TRIM_SETTINGS, 0x0 },
+ { NAU8821_R69_ANALOG_CONTROL_1, 0x0 },
+ { NAU8821_R6A_ANALOG_CONTROL_2, 0x0 },
+ { NAU8821_R6B_PGA_MUTE, 0x0 },
+ { NAU8821_R71_ANALOG_ADC_1, 0x0011 },
+ { NAU8821_R72_ANALOG_ADC_2, 0x0020 },
+ { NAU8821_R73_RDAC, 0x0008 },
+ { NAU8821_R74_MIC_BIAS, 0x0006 },
+ { NAU8821_R76_BOOST, 0x0 },
+ { NAU8821_R77_FEPGA, 0x0 },
+ { NAU8821_R7E_PGA_GAIN, 0x0 },
+ { NAU8821_R7F_POWER_UP_CONTROL, 0x0 },
+ { NAU8821_R80_CHARGE_PUMP, 0x0 },
+};
+
+static bool nau8821_readable_reg(struct device *dev, unsigned int reg)
+{
+ switch (reg) {
+ case NAU8821_R00_RESET ... NAU8821_R01_ENA_CTRL:
+ case NAU8821_R03_CLK_DIVIDER ... NAU8821_R0B_FLL8:
+ case NAU8821_R0D_JACK_DET_CTRL:
+ case NAU8821_R0F_INTERRUPT_MASK ... NAU8821_R13_DMIC_CTRL:
+ case NAU8821_R1A_GPIO12_CTRL ... NAU8821_R1F_RIGHT_TIME_SLOT:
+ case NAU8821_R21_BIQ0_COF1 ... NAU8821_R2D_DAC_CTRL2:
+ case NAU8821_R2F_DAC_DGAIN_CTRL ... NAU8821_R32_HSVOL_CTRL:
+ case NAU8821_R34_DACR_CTRL ... NAU8821_R3D_DAC_DRC_ATKDCY:
+ case NAU8821_R41_BIQ1_COF1 ... NAU8821_R4F_FUSE_CTRL3:
+ case NAU8821_R51_FUSE_CTRL1:
+ case NAU8821_R53_OTPDOUT_1 ... NAU8821_R55_MISC_CTRL:
+ case NAU8821_R58_I2C_DEVICE_ID ... NAU8821_R5A_SOFTWARE_RST:
+ case NAU8821_R66_BIAS_ADJ:
+ case NAU8821_R68_TRIM_SETTINGS ... NAU8821_R6B_PGA_MUTE:
+ case NAU8821_R71_ANALOG_ADC_1 ... NAU8821_R74_MIC_BIAS:
+ case NAU8821_R76_BOOST ... NAU8821_R77_FEPGA:
+ case NAU8821_R7E_PGA_GAIN ... NAU8821_R82_GENERAL_STATUS:
+ return true;
+ default:
+ return false;
+ }
+}
+
+static bool nau8821_writeable_reg(struct device *dev, unsigned int reg)
+{
+ switch (reg) {
+ case NAU8821_R00_RESET ... NAU8821_R01_ENA_CTRL:
+ case NAU8821_R03_CLK_DIVIDER ... NAU8821_R0B_FLL8:
+ case NAU8821_R0D_JACK_DET_CTRL:
+ case NAU8821_R0F_INTERRUPT_MASK:
+ case NAU8821_R11_INT_CLR_KEY_STATUS ... NAU8821_R13_DMIC_CTRL:
+ case NAU8821_R1A_GPIO12_CTRL ... NAU8821_R1F_RIGHT_TIME_SLOT:
+ case NAU8821_R21_BIQ0_COF1 ... NAU8821_R2D_DAC_CTRL2:
+ case NAU8821_R2F_DAC_DGAIN_CTRL ... NAU8821_R32_HSVOL_CTRL:
+ case NAU8821_R34_DACR_CTRL ... NAU8821_R3D_DAC_DRC_ATKDCY:
+ case NAU8821_R41_BIQ1_COF1 ... NAU8821_R4C_IMM_MODE_CTRL:
+ case NAU8821_R4E_FUSE_CTRL2 ... NAU8821_R4F_FUSE_CTRL3:
+ case NAU8821_R51_FUSE_CTRL1:
+ case NAU8821_R55_MISC_CTRL:
+ case NAU8821_R5A_SOFTWARE_RST:
+ case NAU8821_R66_BIAS_ADJ:
+ case NAU8821_R68_TRIM_SETTINGS ... NAU8821_R6B_PGA_MUTE:
+ case NAU8821_R71_ANALOG_ADC_1 ... NAU8821_R74_MIC_BIAS:
+ case NAU8821_R76_BOOST ... NAU8821_R77_FEPGA:
+ case NAU8821_R7E_PGA_GAIN ... NAU8821_R80_CHARGE_PUMP:
+ return true;
+ default:
+ return false;
+ }
+}
+
+static bool nau8821_volatile_reg(struct device *dev, unsigned int reg)
+{
+ switch (reg) {
+ case NAU8821_R00_RESET:
+ case NAU8821_R10_IRQ_STATUS ... NAU8821_R11_INT_CLR_KEY_STATUS:
+ case NAU8821_R21_BIQ0_COF1 ... NAU8821_R2A_BIQ0_COF10:
+ case NAU8821_R41_BIQ1_COF1 ... NAU8821_R4A_BIQ1_COF10:
+ case NAU8821_R4D_IMM_RMS_L:
+ case NAU8821_R53_OTPDOUT_1 ... NAU8821_R54_OTPDOUT_2:
+ case NAU8821_R58_I2C_DEVICE_ID ... NAU8821_R5A_SOFTWARE_RST:
+ case NAU8821_R81_CHARGE_PUMP_INPUT_READ ... NAU8821_R82_GENERAL_STATUS:
+ return true;
+ default:
+ return false;
+ }
+}
+
+static int nau8821_biq_coeff_get(struct snd_kcontrol *kcontrol,
+ struct snd_ctl_elem_value *ucontrol)
+{
+ struct snd_soc_component *component = snd_kcontrol_chip(kcontrol);
+ struct soc_bytes_ext *params = (void *)kcontrol->private_value;
+
+ if (!component->regmap)
+ return -EINVAL;
+
+ regmap_raw_read(component->regmap, NAU8821_R21_BIQ0_COF1,
+ ucontrol->value.bytes.data, params->max);
+
+ return 0;
+}
+
+static int nau8821_biq_coeff_put(struct snd_kcontrol *kcontrol,
+ struct snd_ctl_elem_value *ucontrol)
+{
+ struct snd_soc_component *component = snd_kcontrol_chip(kcontrol);
+ struct soc_bytes_ext *params = (void *)kcontrol->private_value;
+ void *data;
+
+ if (!component->regmap)
+ return -EINVAL;
+
+ data = kmemdup(ucontrol->value.bytes.data,
+ params->max, GFP_KERNEL | GFP_DMA);
+ if (!data)
+ return -ENOMEM;
+
+ regmap_raw_write(component->regmap, NAU8821_R21_BIQ0_COF1,
+ data, params->max);
+
+ kfree(data);
+
+ return 0;
+}
+
+static const char * const nau8821_adc_decimation[] = {
+ "32", "64", "128", "256" };
+
+static const struct soc_enum nau8821_adc_decimation_enum =
+ SOC_ENUM_SINGLE(NAU8821_R2B_ADC_RATE, NAU8821_ADC_SYNC_DOWN_SFT,
+ ARRAY_SIZE(nau8821_adc_decimation), nau8821_adc_decimation);
+
+static const char * const nau8821_dac_oversampl[] = {
+ "64", "256", "128", "", "32" };
+
+static const struct soc_enum nau8821_dac_oversampl_enum =
+ SOC_ENUM_SINGLE(NAU8821_R2C_DAC_CTRL1, NAU8821_DAC_OVERSAMPLE_SFT,
+ ARRAY_SIZE(nau8821_dac_oversampl), nau8821_dac_oversampl);
+
+static const DECLARE_TLV_DB_MINMAX_MUTE(adc_vol_tlv, -6600, 2400);
+static const DECLARE_TLV_DB_MINMAX_MUTE(sidetone_vol_tlv, -4200, 0);
+static const DECLARE_TLV_DB_MINMAX(hp_vol_tlv, -900, 0);
+static const DECLARE_TLV_DB_SCALE(playback_vol_tlv, -6600, 50, 1);
+static const DECLARE_TLV_DB_MINMAX(fepga_gain_tlv, -100, 3600);
+static const DECLARE_TLV_DB_MINMAX_MUTE(crosstalk_vol_tlv, -7000, 2400);
+
+static const struct snd_kcontrol_new nau8821_controls[] = {
+ SOC_DOUBLE_TLV("Mic Volume", NAU8821_R35_ADC_DGAIN_CTRL1,
+ NAU8821_ADCL_CH_VOL_SFT, NAU8821_ADCR_CH_VOL_SFT,
+ 0xff, 0, adc_vol_tlv),
+ SOC_DOUBLE_TLV("Headphone Bypass Volume", NAU8821_R30_ADC_DGAIN_CTRL,
+ 12, 8, 0x0f, 0, sidetone_vol_tlv),
+ SOC_DOUBLE_TLV("Headphone Volume", NAU8821_R32_HSVOL_CTRL,
+ NAU8821_HPL_VOL_SFT, NAU8821_HPR_VOL_SFT, 0x3, 1, hp_vol_tlv),
+ SOC_DOUBLE_TLV("Digital Playback Volume", NAU8821_R34_DACR_CTRL,
+ NAU8821_DACL_CH_VOL_SFT, NAU8821_DACR_CH_VOL_SFT,
+ 0xcf, 0, playback_vol_tlv),
+ SOC_DOUBLE_TLV("Frontend PGA Volume", NAU8821_R7E_PGA_GAIN,
+ NAU8821_PGA_GAIN_L_SFT, NAU8821_PGA_GAIN_R_SFT,
+ 37, 0, fepga_gain_tlv),
+ SOC_DOUBLE_TLV("Headphone Crosstalk Volume",
+ NAU8821_R2F_DAC_DGAIN_CTRL,
+ 0, 8, 0xff, 0, crosstalk_vol_tlv),
+
+ SOC_ENUM("ADC Decimation Rate", nau8821_adc_decimation_enum),
+ SOC_ENUM("DAC Oversampling Rate", nau8821_dac_oversampl_enum),
+ SND_SOC_BYTES_EXT("BIQ Coefficients", 20,
+ nau8821_biq_coeff_get, nau8821_biq_coeff_put),
+ SOC_SINGLE("ADC Phase Switch", NAU8821_R1B_TDM_CTRL,
+ NAU8821_ADCPHS_SFT, 1, 0),
+};
+
+static const struct snd_kcontrol_new nau8821_dmic_mode_switch =
+ SOC_DAPM_SINGLE("Switch", NAU8821_R13_DMIC_CTRL,
+ NAU8821_DMIC_EN_SFT, 1, 0);
+
+static int dmic_clock_control(struct snd_soc_dapm_widget *w,
+ struct snd_kcontrol *k, int event)
+{
+ struct snd_soc_component *component =
+ snd_soc_dapm_to_component(w->dapm);
+ struct nau8821 *nau8821 = snd_soc_component_get_drvdata(component);
+ int i, speed_selection = -1, clk_adc_src, clk_adc;
+ unsigned int clk_divider_r03;
+
+ /* The DMIC clock is gotten from adc clock divided by
+ * CLK_DMIC_SRC (1, 2, 4, 8). The clock has to be equal or
+ * less than nau8821->dmic_clk_threshold.
+ */
+ regmap_read(nau8821->regmap, NAU8821_R03_CLK_DIVIDER,
+ &clk_divider_r03);
+ clk_adc_src = (clk_divider_r03 & NAU8821_CLK_ADC_SRC_MASK)
+ >> NAU8821_CLK_ADC_SRC_SFT;
+ clk_adc = (nau8821->fs * 256) >> clk_adc_src;
+
+ for (i = 0 ; i < 4 ; i++)
+ if ((clk_adc >> dmic_speed_sel[i].param) <=
+ nau8821->dmic_clk_threshold) {
+ speed_selection = dmic_speed_sel[i].val;
+ break;
+ }
+ if (i == 4)
+ return -EINVAL;
+
+ dev_dbg(nau8821->dev,
+ "clk_adc=%d, dmic_clk_threshold = %d, param=%d, val = %d\n",
+ clk_adc, nau8821->dmic_clk_threshold,
+ dmic_speed_sel[i].param, dmic_speed_sel[i].val);
+ regmap_update_bits(nau8821->regmap, NAU8821_R13_DMIC_CTRL,
+ NAU8821_DMIC_SRC_MASK,
+ (speed_selection << NAU8821_DMIC_SRC_SFT));
+
+ return 0;
+}
+
+static int nau8821_left_adc_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 nau8821 *nau8821 = snd_soc_component_get_drvdata(component);
+
+ switch (event) {
+ case SND_SOC_DAPM_POST_PMU:
+ msleep(125);
+ regmap_update_bits(nau8821->regmap, NAU8821_R01_ENA_CTRL,
+ NAU8821_EN_ADCL, NAU8821_EN_ADCL);
+ break;
+ case SND_SOC_DAPM_POST_PMD:
+ regmap_update_bits(nau8821->regmap,
+ NAU8821_R01_ENA_CTRL, NAU8821_EN_ADCL, 0);
+ break;
+ default:
+ return -EINVAL;
+ }
+
+ return 0;
+}
+
+static int nau8821_right_adc_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 nau8821 *nau8821 = snd_soc_component_get_drvdata(component);
+
+ switch (event) {
+ case SND_SOC_DAPM_POST_PMU:
+ msleep(125);
+ regmap_update_bits(nau8821->regmap, NAU8821_R01_ENA_CTRL,
+ NAU8821_EN_ADCR, NAU8821_EN_ADCR);
+ break;
+ case SND_SOC_DAPM_POST_PMD:
+ regmap_update_bits(nau8821->regmap,
+ NAU8821_R01_ENA_CTRL, NAU8821_EN_ADCR, 0);
+ break;
+ default:
+ return -EINVAL;
+ }
+
+ return 0;
+}
+
+static int nau8821_pump_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 nau8821 *nau8821 =
+ snd_soc_component_get_drvdata(component);
+
+ switch (event) {
+ case SND_SOC_DAPM_POST_PMU:
+ /* Prevent startup click by letting charge pump to ramp up */
+ msleep(20);
+ regmap_update_bits(nau8821->regmap, NAU8821_R80_CHARGE_PUMP,
+ NAU8821_JAMNODCLOW, NAU8821_JAMNODCLOW);
+ break;
+ case SND_SOC_DAPM_PRE_PMD:
+ regmap_update_bits(nau8821->regmap, NAU8821_R80_CHARGE_PUMP,
+ NAU8821_JAMNODCLOW, 0);
+ break;
+ default:
+ return -EINVAL;
+ }
+
+ return 0;
+}
+
+static int nau8821_output_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 nau8821 *nau8821 = snd_soc_component_get_drvdata(component);
+
+ switch (event) {
+ case SND_SOC_DAPM_PRE_PMU:
+ /* Disables the TESTDAC to let DAC signal pass through. */
+ regmap_update_bits(nau8821->regmap, NAU8821_R66_BIAS_ADJ,
+ NAU8821_BIAS_TESTDAC_EN, 0);
+ break;
+ case SND_SOC_DAPM_POST_PMD:
+ regmap_update_bits(nau8821->regmap, NAU8821_R66_BIAS_ADJ,
+ NAU8821_BIAS_TESTDAC_EN, NAU8821_BIAS_TESTDAC_EN);
+ break;
+ default:
+ return -EINVAL;
+ }
+
+ return 0;
+}
+
+static int system_clock_control(struct snd_soc_dapm_widget *w,
+ struct snd_kcontrol *k, int event)
+{
+ struct snd_soc_component *component =
+ snd_soc_dapm_to_component(w->dapm);
+ struct nau8821 *nau8821 = snd_soc_component_get_drvdata(component);
+
+ if (SND_SOC_DAPM_EVENT_OFF(event)) {
+ dev_dbg(nau8821->dev, "system clock control : POWER OFF\n");
+ /* Set clock source to disable or internal clock before the
+ * playback or capture end. Codec needs clock for Jack
+ * detection and button press if jack inserted; otherwise,
+ * the clock should be closed.
+ */
+ if (nau8821_is_jack_inserted(nau8821->regmap)) {
+ nau8821_configure_sysclk(nau8821,
+ NAU8821_CLK_INTERNAL, 0);
+ } else {
+ nau8821_configure_sysclk(nau8821, NAU8821_CLK_DIS, 0);
+ }
+ }
+ return 0;
+}
+
+static const struct snd_soc_dapm_widget nau8821_dapm_widgets[] = {
+ SND_SOC_DAPM_SUPPLY("System Clock", SND_SOC_NOPM, 0, 0,
+ system_clock_control, SND_SOC_DAPM_POST_PMD),
+ SND_SOC_DAPM_SUPPLY("MICBIAS", NAU8821_R74_MIC_BIAS,
+ NAU8821_MICBIAS_POWERUP_SFT, 0, NULL, 0),
+ SND_SOC_DAPM_SUPPLY("DMIC Clock", SND_SOC_NOPM, 0, 0,
+ dmic_clock_control, SND_SOC_DAPM_POST_PMU),
+ SND_SOC_DAPM_ADC("ADCL Power", NULL, NAU8821_R72_ANALOG_ADC_2,
+ NAU8821_POWERUP_ADCL_SFT, 0),
+ SND_SOC_DAPM_ADC("ADCR Power", NULL, NAU8821_R72_ANALOG_ADC_2,
+ NAU8821_POWERUP_ADCR_SFT, 0),
+ SND_SOC_DAPM_PGA_S("Frontend PGA L", 1, NAU8821_R7F_POWER_UP_CONTROL,
+ NAU8821_PUP_PGA_L_SFT, 0, NULL, 0),
+ SND_SOC_DAPM_PGA_S("Frontend PGA R", 1, NAU8821_R7F_POWER_UP_CONTROL,
+ NAU8821_PUP_PGA_R_SFT, 0, NULL, 0),
+ SND_SOC_DAPM_PGA_S("ADCL Digital path", 0, NAU8821_R01_ENA_CTRL,
+ NAU8821_EN_ADCL_SFT, 0, nau8821_left_adc_event,
+ SND_SOC_DAPM_POST_PMU | SND_SOC_DAPM_POST_PMD),
+ SND_SOC_DAPM_PGA_S("ADCR Digital path", 0, NAU8821_R01_ENA_CTRL,
+ NAU8821_EN_ADCR_SFT, 0, nau8821_right_adc_event,
+ SND_SOC_DAPM_POST_PMU | SND_SOC_DAPM_POST_PMD),
+ SND_SOC_DAPM_SWITCH("DMIC Enable", SND_SOC_NOPM,
+ 0, 0, &nau8821_dmic_mode_switch),
+ SND_SOC_DAPM_AIF_OUT("AIFTX", "Capture", 0, NAU8821_R1D_I2S_PCM_CTRL2,
+ NAU8821_I2S_TRISTATE_SFT, 1),
+ SND_SOC_DAPM_AIF_IN("AIFRX", "Playback", 0, SND_SOC_NOPM, 0, 0),
+
+ SND_SOC_DAPM_PGA_S("ADACL", 2, NAU8821_R73_RDAC,
+ NAU8821_DACL_EN_SFT, 0, NULL, 0),
+ SND_SOC_DAPM_PGA_S("ADACR", 2, NAU8821_R73_RDAC,
+ NAU8821_DACR_EN_SFT, 0, NULL, 0),
+ SND_SOC_DAPM_PGA_S("ADACL Clock", 3, NAU8821_R73_RDAC,
+ NAU8821_DACL_CLK_EN_SFT, 0, NULL, 0),
+ SND_SOC_DAPM_PGA_S("ADACR Clock", 3, NAU8821_R73_RDAC,
+ NAU8821_DACR_CLK_EN_SFT, 0, NULL, 0),
+ SND_SOC_DAPM_DAC("DDACR", NULL, NAU8821_R01_ENA_CTRL,
+ NAU8821_EN_DACR_SFT, 0),
+ SND_SOC_DAPM_DAC("DDACL", NULL, NAU8821_R01_ENA_CTRL,
+ NAU8821_EN_DACL_SFT, 0),
+ SND_SOC_DAPM_PGA_S("HP amp L", 0, NAU8821_R4B_CLASSG_CTRL,
+ NAU8821_CLASSG_LDAC_EN_SFT, 0, NULL, 0),
+ SND_SOC_DAPM_PGA_S("HP amp R", 0, NAU8821_R4B_CLASSG_CTRL,
+ NAU8821_CLASSG_RDAC_EN_SFT, 0, NULL, 0),
+ SND_SOC_DAPM_PGA_S("Charge Pump", 1, NAU8821_R80_CHARGE_PUMP,
+ NAU8821_CHANRGE_PUMP_EN_SFT, 0, nau8821_pump_event,
+ SND_SOC_DAPM_POST_PMU | SND_SOC_DAPM_PRE_PMD),
+ SND_SOC_DAPM_PGA_S("Output Driver R Stage 1", 4,
+ NAU8821_R7F_POWER_UP_CONTROL,
+ NAU8821_PUP_INTEG_R_SFT, 0, NULL, 0),
+ SND_SOC_DAPM_PGA_S("Output Driver L Stage 1", 4,
+ NAU8821_R7F_POWER_UP_CONTROL,
+ NAU8821_PUP_INTEG_L_SFT, 0, NULL, 0),
+ SND_SOC_DAPM_PGA_S("Output Driver R Stage 2", 5,
+ NAU8821_R7F_POWER_UP_CONTROL,
+ NAU8821_PUP_DRV_INSTG_R_SFT, 0, NULL, 0),
+ SND_SOC_DAPM_PGA_S("Output Driver L Stage 2", 5,
+ NAU8821_R7F_POWER_UP_CONTROL,
+ NAU8821_PUP_DRV_INSTG_L_SFT, 0, NULL, 0),
+ SND_SOC_DAPM_PGA_S("Output Driver R Stage 3", 6,
+ NAU8821_R7F_POWER_UP_CONTROL,
+ NAU8821_PUP_MAIN_DRV_R_SFT, 0, NULL, 0),
+ SND_SOC_DAPM_PGA_S("Output Driver L Stage 3", 6,
+ NAU8821_R7F_POWER_UP_CONTROL,
+ NAU8821_PUP_MAIN_DRV_L_SFT, 0, NULL, 0),
+ SND_SOC_DAPM_PGA_S("Output DACL", 7,
+ NAU8821_R80_CHARGE_PUMP, NAU8821_POWER_DOWN_DACL_SFT,
+ 0, nau8821_output_dac_event,
+ SND_SOC_DAPM_PRE_PMU | SND_SOC_DAPM_POST_PMD),
+ SND_SOC_DAPM_PGA_S("Output DACR", 7,
+ NAU8821_R80_CHARGE_PUMP, NAU8821_POWER_DOWN_DACR_SFT,
+ 0, nau8821_output_dac_event,
+ SND_SOC_DAPM_PRE_PMU | SND_SOC_DAPM_POST_PMD),
+
+ /* HPOL/R are ungrounded by disabling 16 Ohm pull-downs on playback */
+ SND_SOC_DAPM_PGA_S("HPOL Pulldown", 8,
+ NAU8821_R0D_JACK_DET_CTRL,
+ NAU8821_SPKR_DWN1L_SFT, 0, NULL, 0),
+ SND_SOC_DAPM_PGA_S("HPOR Pulldown", 8,
+ NAU8821_R0D_JACK_DET_CTRL,
+ NAU8821_SPKR_DWN1R_SFT, 0, NULL, 0),
+
+ /* High current HPOL/R boost driver */
+ SND_SOC_DAPM_PGA_S("HP Boost Driver", 9,
+ NAU8821_R76_BOOST, NAU8821_HP_BOOST_DIS_SFT, 1, NULL, 0),
+ SND_SOC_DAPM_PGA("Class G", NAU8821_R4B_CLASSG_CTRL,
+ NAU8821_CLASSG_EN_SFT, 0, NULL, 0),
+
+ SND_SOC_DAPM_INPUT("MICL"),
+ SND_SOC_DAPM_INPUT("MICR"),
+ SND_SOC_DAPM_INPUT("DMIC"),
+ SND_SOC_DAPM_OUTPUT("HPOL"),
+ SND_SOC_DAPM_OUTPUT("HPOR"),
+};
+
+static const struct snd_soc_dapm_route nau8821_dapm_routes[] = {
+ {"DMIC Enable", "Switch", "DMIC"},
+ {"DMIC Enable", NULL, "DMIC Clock"},
+
+ {"Frontend PGA L", NULL, "MICL"},
+ {"Frontend PGA R", NULL, "MICR"},
+ {"Frontend PGA L", NULL, "MICBIAS"},
+ {"Frontend PGA R", NULL, "MICBIAS"},
+
+ {"ADCL Power", NULL, "Frontend PGA L"},
+ {"ADCR Power", NULL, "Frontend PGA R"},
+
+ {"ADCL Digital path", NULL, "ADCL Power"},
+ {"ADCR Digital path", NULL, "ADCR Power"},
+ {"ADCL Digital path", NULL, "DMIC Enable"},
+ {"ADCR Digital path", NULL, "DMIC Enable"},
+
+ {"AIFTX", NULL, "ADCL Digital path"},
+ {"AIFTX", NULL, "ADCR Digital path"},
+
+ {"AIFTX", NULL, "System Clock"},
+ {"AIFRX", NULL, "System Clock"},
+
+ {"DDACL", NULL, "AIFRX"},
+ {"DDACR", NULL, "AIFRX"},
+
+ {"HP amp L", NULL, "DDACL"},
+ {"HP amp R", NULL, "DDACR"},
+
+ {"Charge Pump", NULL, "HP amp L"},
+ {"Charge Pump", NULL, "HP amp R"},
+
+ {"ADACL", NULL, "Charge Pump"},
+ {"ADACR", NULL, "Charge Pump"},
+ {"ADACL Clock", NULL, "ADACL"},
+ {"ADACR Clock", NULL, "ADACR"},
+
+ {"Output Driver L Stage 1", NULL, "ADACL Clock"},
+ {"Output Driver R Stage 1", NULL, "ADACR Clock"},
+ {"Output Driver L Stage 2", NULL, "Output Driver L Stage 1"},
+ {"Output Driver R Stage 2", NULL, "Output Driver R Stage 1"},
+ {"Output Driver L Stage 3", NULL, "Output Driver L Stage 2"},
+ {"Output Driver R Stage 3", NULL, "Output Driver R Stage 2"},
+ {"Output DACL", NULL, "Output Driver L Stage 3"},
+ {"Output DACR", NULL, "Output Driver R Stage 3"},
+
+ {"HPOL Pulldown", NULL, "Output DACL"},
+ {"HPOR Pulldown", NULL, "Output DACR"},
+ {"HP Boost Driver", NULL, "HPOL Pulldown"},
+ {"HP Boost Driver", NULL, "HPOR Pulldown"},
+
+ {"Class G", NULL, "HP Boost Driver"},
+ {"HPOL", NULL, "Class G"},
+ {"HPOR", NULL, "Class G"},
+};
+
+static const struct nau8821_osr_attr *
+nau8821_get_osr(struct nau8821 *nau8821, int stream)
+{
+ unsigned int osr;
+
+ if (stream == SNDRV_PCM_STREAM_PLAYBACK) {
+ regmap_read(nau8821->regmap, NAU8821_R2C_DAC_CTRL1, &osr);
+ osr &= NAU8821_DAC_OVERSAMPLE_MASK;
+ if (osr >= ARRAY_SIZE(osr_dac_sel))
+ return NULL;
+ return &osr_dac_sel[osr];
+ } else {
+ regmap_read(nau8821->regmap, NAU8821_R2B_ADC_RATE, &osr);
+ osr &= NAU8821_ADC_SYNC_DOWN_MASK;
+ if (osr >= ARRAY_SIZE(osr_adc_sel))
+ return NULL;
+ return &osr_adc_sel[osr];
+ }
+}
+
+static int nau8821_dai_startup(struct snd_pcm_substream *substream,
+ struct snd_soc_dai *dai)
+{
+ struct snd_soc_component *component = dai->component;
+ struct nau8821 *nau8821 = snd_soc_component_get_drvdata(component);
+ const struct nau8821_osr_attr *osr;
+
+ osr = nau8821_get_osr(nau8821, substream->stream);
+ 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 nau8821_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 nau8821 *nau8821 = snd_soc_component_get_drvdata(component);
+ unsigned int val_len = 0, ctrl_val, bclk_fs, clk_div;
+ const struct nau8821_osr_attr *osr;
+
+ nau8821->fs = params_rate(params);
+ /* CLK_DAC or CLK_ADC = OSR * FS
+ * DAC or 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.
+ */
+ osr = nau8821_get_osr(nau8821, substream->stream);
+ if (!osr || !osr->osr)
+ return -EINVAL;
+ if (nau8821->fs * osr->osr > CLK_DA_AD_MAX)
+ return -EINVAL;
+ if (substream->stream == SNDRV_PCM_STREAM_PLAYBACK)
+ regmap_update_bits(nau8821->regmap, NAU8821_R03_CLK_DIVIDER,
+ NAU8821_CLK_DAC_SRC_MASK,
+ osr->clk_src << NAU8821_CLK_DAC_SRC_SFT);
+ else
+ regmap_update_bits(nau8821->regmap, NAU8821_R03_CLK_DIVIDER,
+ NAU8821_CLK_ADC_SRC_MASK,
+ osr->clk_src << NAU8821_CLK_ADC_SRC_SFT);
+
+ /* make BCLK and LRC divde configuration if the codec as master. */
+ regmap_read(nau8821->regmap, NAU8821_R1D_I2S_PCM_CTRL2, &ctrl_val);
+ if (ctrl_val & NAU8821_I2S_MS_MASTER) {
+ /* get the bclk and fs ratio */
+ bclk_fs = snd_soc_params_to_bclk(params) / nau8821->fs;
+ if (bclk_fs <= 32)
+ clk_div = 3;
+ else if (bclk_fs <= 64)
+ clk_div = 2;
+ else if (bclk_fs <= 128)
+ clk_div = 1;
+ else {
+ return -EINVAL;
+ }
+ regmap_update_bits(nau8821->regmap, NAU8821_R1D_I2S_PCM_CTRL2,
+ NAU8821_I2S_LRC_DIV_MASK | NAU8821_I2S_BLK_DIV_MASK,
+ (clk_div << NAU8821_I2S_LRC_DIV_SFT) | clk_div);
+ }
+
+ switch (params_width(params)) {
+ case 16:
+ val_len |= NAU8821_I2S_DL_16;
+ break;
+ case 20:
+ val_len |= NAU8821_I2S_DL_20;
+ break;
+ case 24:
+ val_len |= NAU8821_I2S_DL_24;
+ break;
+ case 32:
+ val_len |= NAU8821_I2S_DL_32;
+ break;
+ default:
+ return -EINVAL;
+ }
+
+ regmap_update_bits(nau8821->regmap, NAU8821_R1C_I2S_PCM_CTRL1,
+ NAU8821_I2S_DL_MASK, val_len);
+
+ return 0;
+}
+
+static int nau8821_set_dai_fmt(struct snd_soc_dai *codec_dai, unsigned int fmt)
+{
+ struct snd_soc_component *component = codec_dai->component;
+ struct nau8821 *nau8821 = snd_soc_component_get_drvdata(component);
+ unsigned int ctrl1_val = 0, ctrl2_val = 0;
+
+ switch (fmt & SND_SOC_DAIFMT_MASTER_MASK) {
+ case SND_SOC_DAIFMT_CBP_CFP:
+ ctrl2_val |= NAU8821_I2S_MS_MASTER;
+ break;
+ 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 |= NAU8821_I2S_BP_INV;
+ break;
+ default:
+ return -EINVAL;
+ }
+
+ switch (fmt & SND_SOC_DAIFMT_FORMAT_MASK) {
+ case SND_SOC_DAIFMT_I2S:
+ ctrl1_val |= NAU8821_I2S_DF_I2S;
+ break;
+ case SND_SOC_DAIFMT_LEFT_J:
+ ctrl1_val |= NAU8821_I2S_DF_LEFT;
+ break;
+ case SND_SOC_DAIFMT_RIGHT_J:
+ ctrl1_val |= NAU8821_I2S_DF_RIGTH;
+ break;
+ case SND_SOC_DAIFMT_DSP_A:
+ ctrl1_val |= NAU8821_I2S_DF_PCM_AB;
+ break;
+ case SND_SOC_DAIFMT_DSP_B:
+ ctrl1_val |= NAU8821_I2S_DF_PCM_AB;
+ ctrl1_val |= NAU8821_I2S_PCMB_EN;
+ break;
+ default:
+ return -EINVAL;
+ }
+
+ regmap_update_bits(nau8821->regmap, NAU8821_R1C_I2S_PCM_CTRL1,
+ NAU8821_I2S_DL_MASK | NAU8821_I2S_DF_MASK |
+ NAU8821_I2S_BP_MASK | NAU8821_I2S_PCMB_MASK, ctrl1_val);
+ regmap_update_bits(nau8821->regmap, NAU8821_R1D_I2S_PCM_CTRL2,
+ NAU8821_I2S_MS_MASK, ctrl2_val);
+
+ return 0;
+}
+
+static int nau8821_digital_mute(struct snd_soc_dai *dai, int mute,
+ int direction)
+{
+ struct snd_soc_component *component = dai->component;
+ struct nau8821 *nau8821 = snd_soc_component_get_drvdata(component);
+ unsigned int val = 0;
+
+ if (mute)
+ val = NAU8821_DAC_SOFT_MUTE;
+
+ return regmap_update_bits(nau8821->regmap,
+ NAU8821_R31_MUTE_CTRL, NAU8821_DAC_SOFT_MUTE, val);
+}
+
+static const struct snd_soc_dai_ops nau8821_dai_ops = {
+ .startup = nau8821_dai_startup,
+ .hw_params = nau8821_hw_params,
+ .set_fmt = nau8821_set_dai_fmt,
+ .mute_stream = nau8821_digital_mute,
+ .no_capture_mute = 1,
+};
+
+#define NAU8821_RATES SNDRV_PCM_RATE_8000_192000
+#define NAU8821_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 nau8821_dai = {
+ .name = NUVOTON_CODEC_DAI,
+ .playback = {
+ .stream_name = "Playback",
+ .channels_min = 1,
+ .channels_max = 2,
+ .rates = NAU8821_RATES,
+ .formats = NAU8821_FORMATS,
+ },
+ .capture = {
+ .stream_name = "Capture",
+ .channels_min = 1,
+ .channels_max = 2,
+ .rates = NAU8821_RATES,
+ .formats = NAU8821_FORMATS,
+ },
+ .ops = &nau8821_dai_ops,
+};
+
+
+static bool nau8821_is_jack_inserted(struct regmap *regmap)
+{
+ bool active_high, is_high;
+ int status, jkdet;
+
+ regmap_read(regmap, NAU8821_R0D_JACK_DET_CTRL, &jkdet);
+ active_high = jkdet & NAU8821_JACK_POLARITY;
+ regmap_read(regmap, NAU8821_R82_GENERAL_STATUS, &status);
+ is_high = status & NAU8821_GPIO2_IN;
+ /* return jack connection status according to jack insertion logic
+ * active high or active low.
+ */
+ return active_high == is_high;
+}
+
+static void nau8821_int_status_clear_all(struct regmap *regmap)
+{
+ int active_irq, clear_irq, i;
+
+ /* Reset the intrruption status from rightmost bit if the corres-
+ * ponding irq event occurs.
+ */
+ regmap_read(regmap, NAU8821_R10_IRQ_STATUS, &active_irq);
+ for (i = 0; i < NAU8821_REG_DATA_LEN; i++) {
+ clear_irq = (0x1 << i);
+ if (active_irq & clear_irq)
+ regmap_write(regmap,
+ NAU8821_R11_INT_CLR_KEY_STATUS, clear_irq);
+ }
+}
+
+static void nau8821_eject_jack(struct nau8821 *nau8821)
+{
+ struct snd_soc_dapm_context *dapm = nau8821->dapm;
+ struct regmap *regmap = nau8821->regmap;
+ struct snd_soc_component *component = snd_soc_dapm_to_component(dapm);
+
+ /* Detach 2kOhm Resistors from MICBIAS to MICGND */
+ regmap_update_bits(regmap, NAU8821_R74_MIC_BIAS,
+ NAU8821_MICBIAS_JKR2, 0);
+ /* HPL/HPR short to ground */
+ regmap_update_bits(regmap, NAU8821_R0D_JACK_DET_CTRL,
+ NAU8821_SPKR_DWN1R | NAU8821_SPKR_DWN1L, 0);
+ snd_soc_component_disable_pin(component, "MICBIAS");
+ snd_soc_dapm_sync(dapm);
+
+ /* Clear all interruption status */
+ nau8821_int_status_clear_all(regmap);
+
+ /* Enable the insertion interruption, disable the ejection inter-
+ * ruption, and then bypass de-bounce circuit.
+ */
+ regmap_update_bits(regmap, NAU8821_R12_INTERRUPT_DIS_CTRL,
+ NAU8821_IRQ_EJECT_DIS | NAU8821_IRQ_INSERT_DIS,
+ NAU8821_IRQ_EJECT_DIS);
+ /* Mask unneeded IRQs: 1 - disable, 0 - enable */
+ regmap_update_bits(regmap, NAU8821_R0F_INTERRUPT_MASK,
+ NAU8821_IRQ_EJECT_EN | NAU8821_IRQ_INSERT_EN,
+ NAU8821_IRQ_EJECT_EN);
+
+ regmap_update_bits(regmap, NAU8821_R0D_JACK_DET_CTRL,
+ NAU8821_JACK_DET_DB_BYPASS, NAU8821_JACK_DET_DB_BYPASS);
+
+ /* Close clock for jack type detection at manual mode */
+ if (dapm->bias_level < SND_SOC_BIAS_PREPARE)
+ nau8821_configure_sysclk(nau8821, NAU8821_CLK_DIS, 0);
+
+ /* Recover to normal channel input */
+ regmap_update_bits(regmap, NAU8821_R2B_ADC_RATE,
+ NAU8821_ADC_R_SRC_EN, 0);
+ if (nau8821->key_enable) {
+ regmap_update_bits(regmap, NAU8821_R0F_INTERRUPT_MASK,
+ NAU8821_IRQ_KEY_RELEASE_EN |
+ NAU8821_IRQ_KEY_PRESS_EN,
+ NAU8821_IRQ_KEY_RELEASE_EN |
+ NAU8821_IRQ_KEY_PRESS_EN);
+ regmap_update_bits(regmap,
+ NAU8821_R12_INTERRUPT_DIS_CTRL,
+ NAU8821_IRQ_KEY_RELEASE_DIS |
+ NAU8821_IRQ_KEY_PRESS_DIS,
+ NAU8821_IRQ_KEY_RELEASE_DIS |
+ NAU8821_IRQ_KEY_PRESS_DIS);
+ }
+
+}
+
+static void nau8821_jdet_work(struct work_struct *work)
+{
+ struct nau8821 *nau8821 =
+ container_of(work, struct nau8821, jdet_work);
+ struct snd_soc_dapm_context *dapm = nau8821->dapm;
+ struct snd_soc_component *component = snd_soc_dapm_to_component(dapm);
+ struct regmap *regmap = nau8821->regmap;
+ int jack_status_reg, mic_detected, event = 0, event_mask = 0;
+
+ snd_soc_component_force_enable_pin(component, "MICBIAS");
+ snd_soc_dapm_sync(dapm);
+ msleep(20);
+
+ regmap_read(regmap, NAU8821_R58_I2C_DEVICE_ID, &jack_status_reg);
+ mic_detected = !(jack_status_reg & NAU8821_KEYDET);
+ if (mic_detected) {
+ dev_dbg(nau8821->dev, "Headset connected\n");
+ event |= SND_JACK_HEADSET;
+
+ /* 2kOhm Resistor from MICBIAS to MICGND1 */
+ regmap_update_bits(regmap, NAU8821_R74_MIC_BIAS,
+ NAU8821_MICBIAS_JKR2, NAU8821_MICBIAS_JKR2);
+ /* Latch Right Channel Analog data
+ * input into the Right Channel Filter
+ */
+ regmap_update_bits(regmap, NAU8821_R2B_ADC_RATE,
+ NAU8821_ADC_R_SRC_EN, NAU8821_ADC_R_SRC_EN);
+ if (nau8821->key_enable) {
+ regmap_update_bits(regmap, NAU8821_R0F_INTERRUPT_MASK,
+ NAU8821_IRQ_KEY_RELEASE_EN |
+ NAU8821_IRQ_KEY_PRESS_EN, 0);
+ regmap_update_bits(regmap,
+ NAU8821_R12_INTERRUPT_DIS_CTRL,
+ NAU8821_IRQ_KEY_RELEASE_DIS |
+ NAU8821_IRQ_KEY_PRESS_DIS, 0);
+ }
+ } else {
+ dev_dbg(nau8821->dev, "Headphone connected\n");
+ event |= SND_JACK_HEADPHONE;
+ snd_soc_component_disable_pin(component, "MICBIAS");
+ snd_soc_dapm_sync(dapm);
+ }
+ event_mask |= SND_JACK_HEADSET;
+ snd_soc_jack_report(nau8821->jack, event, event_mask);
+}
+
+/* Enable interruptions with internal clock. */
+static void nau8821_setup_inserted_irq(struct nau8821 *nau8821)
+{
+ struct regmap *regmap = nau8821->regmap;
+
+ /* Enable internal VCO needed for interruptions */
+ if (nau8821->dapm->bias_level < SND_SOC_BIAS_PREPARE)
+ nau8821_configure_sysclk(nau8821, NAU8821_CLK_INTERNAL, 0);
+
+ /* Chip needs one FSCLK cycle in order to generate interruptions,
+ * 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, NAU8821_R1D_I2S_PCM_CTRL2,
+ NAU8821_I2S_MS_MASK, NAU8821_I2S_MS_MASTER);
+ regmap_update_bits(regmap, NAU8821_R1D_I2S_PCM_CTRL2,
+ NAU8821_I2S_MS_MASK, NAU8821_I2S_MS_SLAVE);
+
+ /* Not bypass de-bounce circuit */
+ regmap_update_bits(regmap, NAU8821_R0D_JACK_DET_CTRL,
+ NAU8821_JACK_DET_DB_BYPASS, 0);
+
+ regmap_update_bits(regmap, NAU8821_R0F_INTERRUPT_MASK,
+ NAU8821_IRQ_EJECT_EN, 0);
+ regmap_update_bits(regmap, NAU8821_R12_INTERRUPT_DIS_CTRL,
+ NAU8821_IRQ_EJECT_DIS, 0);
+}
+
+static irqreturn_t nau8821_interrupt(int irq, void *data)
+{
+ struct nau8821 *nau8821 = (struct nau8821 *)data;
+ struct regmap *regmap = nau8821->regmap;
+ int active_irq, clear_irq = 0, event = 0, event_mask = 0;
+
+ if (regmap_read(regmap, NAU8821_R10_IRQ_STATUS, &active_irq)) {
+ dev_err(nau8821->dev, "failed to read irq status\n");
+ return IRQ_NONE;
+ }
+
+ dev_dbg(nau8821->dev, "IRQ %d\n", active_irq);
+
+ if ((active_irq & NAU8821_JACK_EJECT_IRQ_MASK) ==
+ NAU8821_JACK_EJECT_DETECTED) {
+ regmap_update_bits(regmap, NAU8821_R71_ANALOG_ADC_1,
+ NAU8821_MICDET_MASK, NAU8821_MICDET_DIS);
+ nau8821_eject_jack(nau8821);
+ event_mask |= SND_JACK_HEADSET;
+ clear_irq = NAU8821_JACK_EJECT_IRQ_MASK;
+ } else if (active_irq & NAU8821_KEY_SHORT_PRESS_IRQ) {
+ event |= NAU8821_BUTTON;
+ event_mask |= NAU8821_BUTTON;
+ clear_irq = NAU8821_KEY_SHORT_PRESS_IRQ;
+ } else if (active_irq & NAU8821_KEY_RELEASE_IRQ) {
+ event_mask = NAU8821_BUTTON;
+ clear_irq = NAU8821_KEY_RELEASE_IRQ;
+ } else if ((active_irq & NAU8821_JACK_INSERT_IRQ_MASK) ==
+ NAU8821_JACK_INSERT_DETECTED) {
+ regmap_update_bits(regmap, NAU8821_R71_ANALOG_ADC_1,
+ NAU8821_MICDET_MASK, NAU8821_MICDET_EN);
+ if (nau8821_is_jack_inserted(regmap)) {
+ /* detect microphone and jack type */
+ cancel_work_sync(&nau8821->jdet_work);
+ schedule_work(&nau8821->jdet_work);
+ /* Turn off insertion interruption at manual mode */
+ regmap_update_bits(regmap,
+ NAU8821_R12_INTERRUPT_DIS_CTRL,
+ NAU8821_IRQ_INSERT_DIS,
+ NAU8821_IRQ_INSERT_DIS);
+ regmap_update_bits(regmap,
+ NAU8821_R0F_INTERRUPT_MASK,
+ NAU8821_IRQ_INSERT_EN,
+ NAU8821_IRQ_INSERT_EN);
+ nau8821_setup_inserted_irq(nau8821);
+ } else {
+ dev_warn(nau8821->dev,
+ "Inserted IRQ fired but not connected\n");
+ nau8821_eject_jack(nau8821);
+ }
+ }
+
+ if (!clear_irq)
+ clear_irq = active_irq;
+ /* clears the rightmost interruption */
+ regmap_write(regmap, NAU8821_R11_INT_CLR_KEY_STATUS, clear_irq);
+
+ if (event_mask)
+ snd_soc_jack_report(nau8821->jack, event, event_mask);
+
+ return IRQ_HANDLED;
+}
+
+static const struct regmap_config nau8821_regmap_config = {
+ .val_bits = NAU8821_REG_DATA_LEN,
+ .reg_bits = NAU8821_REG_ADDR_LEN,
+
+ .max_register = NAU8821_REG_MAX,
+ .readable_reg = nau8821_readable_reg,
+ .writeable_reg = nau8821_writeable_reg,
+ .volatile_reg = nau8821_volatile_reg,
+
+ .cache_type = REGCACHE_RBTREE,
+ .reg_defaults = nau8821_reg_defaults,
+ .num_reg_defaults = ARRAY_SIZE(nau8821_reg_defaults),
+};
+
+static int nau8821_component_probe(struct snd_soc_component *component)
+{
+ struct nau8821 *nau8821 = snd_soc_component_get_drvdata(component);
+ struct snd_soc_dapm_context *dapm =
+ snd_soc_component_get_dapm(component);
+
+ nau8821->dapm = dapm;
+
+ return 0;
+}
+
+/**
+ * nau8821_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 nau8821_calc_fll_param(unsigned int fll_in,
+ unsigned int fs, struct nau8821_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 / NAU8821_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
+ */
+ fvco_max = 0;
+ fvco_sel = ARRAY_SIZE(mclk_src_scaling);
+ for (i = 0; i < ARRAY_SIZE(mclk_src_scaling); i++) {
+ fvco = 256ULL * 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 24-bit fractional
+ * input based on FDCO, FREF and FLL ratio.
+ */
+ fvco = div_u64(fvco_max << 24, fref * fll_param->ratio);
+ fll_param->fll_int = (fvco >> 24) & 0x3ff;
+ fll_param->fll_frac = fvco & 0xffffff;
+
+ return 0;
+}
+
+static void nau8821_fll_apply(struct nau8821 *nau8821,
+ struct nau8821_fll *fll_param)
+{
+ struct regmap *regmap = nau8821->regmap;
+
+ regmap_update_bits(regmap, NAU8821_R03_CLK_DIVIDER,
+ NAU8821_CLK_SRC_MASK | NAU8821_CLK_MCLK_SRC_MASK,
+ NAU8821_CLK_SRC_MCLK | fll_param->mclk_src);
+ /* Make DSP operate at high speed for better performance. */
+ regmap_update_bits(regmap, NAU8821_R04_FLL1,
+ NAU8821_FLL_RATIO_MASK | NAU8821_ICTRL_LATCH_MASK,
+ fll_param->ratio | (0x6 << NAU8821_ICTRL_LATCH_SFT));
+ /* FLL 24-bit fractional input */
+ regmap_write(regmap, NAU8821_R0A_FLL7,
+ (fll_param->fll_frac >> 16) & 0xff);
+ regmap_write(regmap, NAU8821_R0B_FLL8, fll_param->fll_frac & 0xffff);
+ /* FLL 10-bit integer input */
+ regmap_update_bits(regmap, NAU8821_R06_FLL3,
+ NAU8821_FLL_INTEGER_MASK, fll_param->fll_int);
+ /* FLL pre-scaler */
+ regmap_update_bits(regmap, NAU8821_R07_FLL4,
+ NAU8821_HIGHBW_EN | NAU8821_FLL_REF_DIV_MASK,
+ NAU8821_HIGHBW_EN |
+ (fll_param->clk_ref_div << NAU8821_FLL_REF_DIV_SFT));
+ /* select divided VCO input */
+ regmap_update_bits(regmap, NAU8821_R08_FLL5,
+ NAU8821_FLL_CLK_SW_MASK, NAU8821_FLL_CLK_SW_REF);
+ /* Disable free-running mode */
+ regmap_update_bits(regmap,
+ NAU8821_R09_FLL6, NAU8821_DCO_EN, 0);
+ if (fll_param->fll_frac) {
+ /* set FLL loop filter enable and cutoff frequency at 500Khz */
+ regmap_update_bits(regmap, NAU8821_R08_FLL5,
+ NAU8821_FLL_PDB_DAC_EN | NAU8821_FLL_LOOP_FTR_EN |
+ NAU8821_FLL_FTR_SW_MASK,
+ NAU8821_FLL_PDB_DAC_EN | NAU8821_FLL_LOOP_FTR_EN |
+ NAU8821_FLL_FTR_SW_FILTER);
+ regmap_update_bits(regmap, NAU8821_R09_FLL6,
+ NAU8821_SDM_EN | NAU8821_CUTOFF500,
+ NAU8821_SDM_EN | NAU8821_CUTOFF500);
+ } else {
+ /* disable FLL loop filter and cutoff frequency */
+ regmap_update_bits(regmap, NAU8821_R08_FLL5,
+ NAU8821_FLL_PDB_DAC_EN | NAU8821_FLL_LOOP_FTR_EN |
+ NAU8821_FLL_FTR_SW_MASK, NAU8821_FLL_FTR_SW_ACCU);
+ regmap_update_bits(regmap, NAU8821_R09_FLL6,
+ NAU8821_SDM_EN | NAU8821_CUTOFF500, 0);
+ }
+}
+
+/**
+ * nau8821_set_fll - FLL configuration of nau8821
+ * @component: codec component
+ * @pll_id: PLL requested
+ * @source: clock source
+ * @freq_in: frequency of input clock source
+ * @freq_out: must be 256*Fs in order to achieve the best performance
+ *
+ * The FLL function can select BCLK or MCLK as the input clock source.
+ *
+ * Returns 0 if the parameters have been applied successfully
+ * or negative error code.
+ */
+static int nau8821_set_fll(struct snd_soc_component *component,
+ int pll_id, int source, unsigned int freq_in, unsigned int freq_out)
+{
+ struct nau8821 *nau8821 = snd_soc_component_get_drvdata(component);
+ struct nau8821_fll fll_set_param, *fll_param = &fll_set_param;
+ int ret, fs;
+
+ fs = freq_out >> 8;
+ ret = nau8821_calc_fll_param(freq_in, fs, fll_param);
+ if (ret) {
+ dev_err(nau8821->dev,
+ "Unsupported input clock %d to output clock %d\n",
+ freq_in, freq_out);
+ return ret;
+ }
+ dev_dbg(nau8821->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);
+
+ nau8821_fll_apply(nau8821, fll_param);
+ mdelay(2);
+ regmap_update_bits(nau8821->regmap, NAU8821_R03_CLK_DIVIDER,
+ NAU8821_CLK_SRC_MASK, NAU8821_CLK_SRC_VCO);
+
+ return 0;
+}
+
+static void nau8821_configure_mclk_as_sysclk(struct regmap *regmap)
+{
+ regmap_update_bits(regmap, NAU8821_R03_CLK_DIVIDER,
+ NAU8821_CLK_SRC_MASK, NAU8821_CLK_SRC_MCLK);
+ regmap_update_bits(regmap, NAU8821_R09_FLL6,
+ NAU8821_DCO_EN, 0);
+ /* Make DSP operate as default setting for power saving. */
+ regmap_update_bits(regmap, NAU8821_R04_FLL1,
+ NAU8821_ICTRL_LATCH_MASK, 0);
+}
+
+static int nau8821_configure_sysclk(struct nau8821 *nau8821,
+ int clk_id, unsigned int freq)
+{
+ struct regmap *regmap = nau8821->regmap;
+
+ switch (clk_id) {
+ case NAU8821_CLK_DIS:
+ /* Clock provided externally and disable internal VCO clock */
+ nau8821_configure_mclk_as_sysclk(regmap);
+ break;
+ case NAU8821_CLK_MCLK:
+ nau8821_configure_mclk_as_sysclk(regmap);
+ /* MCLK not changed by clock tree */
+ regmap_update_bits(regmap, NAU8821_R03_CLK_DIVIDER,
+ NAU8821_CLK_MCLK_SRC_MASK, 0);
+ break;
+ case NAU8821_CLK_INTERNAL:
+ if (nau8821_is_jack_inserted(regmap)) {
+ regmap_update_bits(regmap, NAU8821_R09_FLL6,
+ NAU8821_DCO_EN, NAU8821_DCO_EN);
+ regmap_update_bits(regmap, NAU8821_R03_CLK_DIVIDER,
+ NAU8821_CLK_SRC_MASK, NAU8821_CLK_SRC_VCO);
+ /* Decrease the VCO frequency and make DSP operate
+ * as default setting for power saving.
+ */
+ regmap_update_bits(regmap, NAU8821_R03_CLK_DIVIDER,
+ NAU8821_CLK_MCLK_SRC_MASK, 0xf);
+ regmap_update_bits(regmap, NAU8821_R04_FLL1,
+ NAU8821_ICTRL_LATCH_MASK |
+ NAU8821_FLL_RATIO_MASK, 0x10);
+ regmap_update_bits(regmap, NAU8821_R09_FLL6,
+ NAU8821_SDM_EN, NAU8821_SDM_EN);
+ }
+ break;
+ case NAU8821_CLK_FLL_MCLK:
+ /* Higher FLL reference input frequency can only set lower
+ * gain error, such as 0000 for input reference from MCLK
+ * 12.288Mhz.
+ */
+ regmap_update_bits(regmap, NAU8821_R06_FLL3,
+ NAU8821_FLL_CLK_SRC_MASK | NAU8821_GAIN_ERR_MASK,
+ NAU8821_FLL_CLK_SRC_MCLK | 0);
+ break;
+ case NAU8821_CLK_FLL_BLK:
+ /* If FLL reference input is from low frequency source,
+ * higher error gain can apply such as 0xf which has
+ * the most sensitive gain error correction threshold,
+ * Therefore, FLL has the most accurate DCO to
+ * target frequency.
+ */
+ regmap_update_bits(regmap, NAU8821_R06_FLL3,
+ NAU8821_FLL_CLK_SRC_MASK | NAU8821_GAIN_ERR_MASK,
+ NAU8821_FLL_CLK_SRC_BLK |
+ (0xf << NAU8821_GAIN_ERR_SFT));
+ break;
+ case NAU8821_CLK_FLL_FS:
+ /* If FLL reference input is from low frequency source,
+ * higher error gain can apply such as 0xf which has
+ * the most sensitive gain error correction threshold,
+ * Therefore, FLL has the most accurate DCO to
+ * target frequency.
+ */
+ regmap_update_bits(regmap, NAU8821_R06_FLL3,
+ NAU8821_FLL_CLK_SRC_MASK | NAU8821_GAIN_ERR_MASK,
+ NAU8821_FLL_CLK_SRC_FS |
+ (0xf << NAU8821_GAIN_ERR_SFT));
+ break;
+ default:
+ dev_err(nau8821->dev, "Invalid clock id (%d)\n", clk_id);
+ return -EINVAL;
+ }
+ nau8821->clk_id = clk_id;
+ dev_dbg(nau8821->dev, "Sysclk is %dHz and clock id is %d\n", freq,
+ nau8821->clk_id);
+
+ return 0;
+}
+
+static int nau8821_set_sysclk(struct snd_soc_component *component, int clk_id,
+ int source, unsigned int freq, int dir)
+{
+ struct nau8821 *nau8821 = snd_soc_component_get_drvdata(component);
+
+ return nau8821_configure_sysclk(nau8821, clk_id, freq);
+}
+
+static int nau8821_resume_setup(struct nau8821 *nau8821)
+{
+ struct regmap *regmap = nau8821->regmap;
+
+ /* Close clock when jack type detection at manual mode */
+ nau8821_configure_sysclk(nau8821, NAU8821_CLK_DIS, 0);
+ if (nau8821->irq) {
+ /* Clear all interruption status */
+ nau8821_int_status_clear_all(regmap);
+
+ /* Enable both insertion and ejection interruptions, and then
+ * bypass de-bounce circuit.
+ */
+ regmap_update_bits(regmap, NAU8821_R0F_INTERRUPT_MASK,
+ NAU8821_IRQ_EJECT_EN | NAU8821_IRQ_INSERT_EN, 0);
+ regmap_update_bits(regmap, NAU8821_R0D_JACK_DET_CTRL,
+ NAU8821_JACK_DET_DB_BYPASS,
+ NAU8821_JACK_DET_DB_BYPASS);
+ regmap_update_bits(regmap, NAU8821_R12_INTERRUPT_DIS_CTRL,
+ NAU8821_IRQ_INSERT_DIS | NAU8821_IRQ_EJECT_DIS, 0);
+ }
+
+ return 0;
+}
+
+static int nau8821_set_bias_level(struct snd_soc_component *component,
+ enum snd_soc_bias_level level)
+{
+ struct nau8821 *nau8821 = snd_soc_component_get_drvdata(component);
+ struct regmap *regmap = nau8821->regmap;
+
+ switch (level) {
+ case SND_SOC_BIAS_ON:
+ break;
+
+ case SND_SOC_BIAS_PREPARE:
+ break;
+
+ case SND_SOC_BIAS_STANDBY:
+ /* Setup codec configuration after resume */
+ if (snd_soc_component_get_bias_level(component) ==
+ SND_SOC_BIAS_OFF)
+ nau8821_resume_setup(nau8821);
+ break;
+
+ case SND_SOC_BIAS_OFF:
+ /* HPL/HPR short to ground */
+ regmap_update_bits(regmap, NAU8821_R0D_JACK_DET_CTRL,
+ NAU8821_SPKR_DWN1R | NAU8821_SPKR_DWN1L, 0);
+ if (nau8821->irq) {
+ /* Reset the configuration of jack type for detection.
+ * Detach 2kOhm Resistors from MICBIAS to MICGND1/2.
+ */
+ regmap_update_bits(regmap, NAU8821_R74_MIC_BIAS,
+ NAU8821_MICBIAS_JKR2, 0);
+ /* Turn off all interruptions before system shutdown.
+ * Keep theinterruption quiet before resume
+ * setup completes.
+ */
+ regmap_write(regmap,
+ NAU8821_R12_INTERRUPT_DIS_CTRL, 0xffff);
+ regmap_update_bits(regmap, NAU8821_R0F_INTERRUPT_MASK,
+ NAU8821_IRQ_EJECT_EN | NAU8821_IRQ_INSERT_EN,
+ NAU8821_IRQ_EJECT_EN | NAU8821_IRQ_INSERT_EN);
+ }
+ break;
+ default:
+ break;
+ }
+
+ return 0;
+}
+
+static int __maybe_unused nau8821_suspend(struct snd_soc_component *component)
+{
+ struct nau8821 *nau8821 = snd_soc_component_get_drvdata(component);
+
+ if (nau8821->irq)
+ disable_irq(nau8821->irq);
+ snd_soc_component_force_bias_level(component, SND_SOC_BIAS_OFF);
+ /* Power down codec power; don't support button wakeup */
+ snd_soc_component_disable_pin(component, "MICBIAS");
+ snd_soc_dapm_sync(nau8821->dapm);
+ regcache_cache_only(nau8821->regmap, true);
+ regcache_mark_dirty(nau8821->regmap);
+
+ return 0;
+}
+
+static int __maybe_unused nau8821_resume(struct snd_soc_component *component)
+{
+ struct nau8821 *nau8821 = snd_soc_component_get_drvdata(component);
+
+ regcache_cache_only(nau8821->regmap, false);
+ regcache_sync(nau8821->regmap);
+ if (nau8821->irq)
+ enable_irq(nau8821->irq);
+
+ return 0;
+}
+
+static const struct snd_soc_component_driver nau8821_component_driver = {
+ .probe = nau8821_component_probe,
+ .set_sysclk = nau8821_set_sysclk,
+ .set_pll = nau8821_set_fll,
+ .set_bias_level = nau8821_set_bias_level,
+ .suspend = nau8821_suspend,
+ .resume = nau8821_resume,
+ .controls = nau8821_controls,
+ .num_controls = ARRAY_SIZE(nau8821_controls),
+ .dapm_widgets = nau8821_dapm_widgets,
+ .num_dapm_widgets = ARRAY_SIZE(nau8821_dapm_widgets),
+ .dapm_routes = nau8821_dapm_routes,
+ .num_dapm_routes = ARRAY_SIZE(nau8821_dapm_routes),
+ .suspend_bias_off = 1,
+ .idle_bias_on = 1,
+ .use_pmdown_time = 1,
+ .endianness = 1,
+};
+
+/**
+ * nau8821_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 nau8821_enable_jack_detect(struct snd_soc_component *component,
+ struct snd_soc_jack *jack)
+{
+ struct nau8821 *nau8821 = snd_soc_component_get_drvdata(component);
+ int ret;
+
+ nau8821->jack = jack;
+ /* Initiate jack detection work queue */
+ INIT_WORK(&nau8821->jdet_work, nau8821_jdet_work);
+ ret = devm_request_threaded_irq(nau8821->dev, nau8821->irq, NULL,
+ nau8821_interrupt, IRQF_TRIGGER_LOW | IRQF_ONESHOT,
+ "nau8821", nau8821);
+ if (ret) {
+ dev_err(nau8821->dev, "Cannot request irq %d (%d)\n",
+ nau8821->irq, ret);
+ return ret;
+ }
+
+ return ret;
+}
+EXPORT_SYMBOL_GPL(nau8821_enable_jack_detect);
+
+static void nau8821_reset_chip(struct regmap *regmap)
+{
+ regmap_write(regmap, NAU8821_R00_RESET, 0xffff);
+ regmap_write(regmap, NAU8821_R00_RESET, 0xffff);
+}
+
+static void nau8821_print_device_properties(struct nau8821 *nau8821)
+{
+ struct device *dev = nau8821->dev;
+
+ dev_dbg(dev, "jkdet-enable: %d\n", nau8821->jkdet_enable);
+ dev_dbg(dev, "jkdet-pull-enable: %d\n", nau8821->jkdet_pull_enable);
+ dev_dbg(dev, "jkdet-pull-up: %d\n", nau8821->jkdet_pull_up);
+ dev_dbg(dev, "jkdet-polarity: %d\n", nau8821->jkdet_polarity);
+ dev_dbg(dev, "micbias-voltage: %d\n", nau8821->micbias_voltage);
+ dev_dbg(dev, "vref-impedance: %d\n", nau8821->vref_impedance);
+ dev_dbg(dev, "jack-insert-debounce: %d\n",
+ nau8821->jack_insert_debounce);
+ dev_dbg(dev, "jack-eject-debounce: %d\n",
+ nau8821->jack_eject_debounce);
+ dev_dbg(dev, "dmic-clk-threshold: %d\n",
+ nau8821->dmic_clk_threshold);
+ dev_dbg(dev, "key_enable: %d\n", nau8821->key_enable);
+}
+
+static int nau8821_read_device_properties(struct device *dev,
+ struct nau8821 *nau8821)
+{
+ int ret;
+
+ nau8821->jkdet_enable = device_property_read_bool(dev,
+ "nuvoton,jkdet-enable");
+ nau8821->jkdet_pull_enable = device_property_read_bool(dev,
+ "nuvoton,jkdet-pull-enable");
+ nau8821->jkdet_pull_up = device_property_read_bool(dev,
+ "nuvoton,jkdet-pull-up");
+ nau8821->key_enable = device_property_read_bool(dev,
+ "nuvoton,key-enable");
+ ret = device_property_read_u32(dev, "nuvoton,jkdet-polarity",
+ &nau8821->jkdet_polarity);
+ if (ret)
+ nau8821->jkdet_polarity = 1;
+ ret = device_property_read_u32(dev, "nuvoton,micbias-voltage",
+ &nau8821->micbias_voltage);
+ if (ret)
+ nau8821->micbias_voltage = 6;
+ ret = device_property_read_u32(dev, "nuvoton,vref-impedance",
+ &nau8821->vref_impedance);
+ if (ret)
+ nau8821->vref_impedance = 2;
+ ret = device_property_read_u32(dev, "nuvoton,jack-insert-debounce",
+ &nau8821->jack_insert_debounce);
+ if (ret)
+ nau8821->jack_insert_debounce = 7;
+ ret = device_property_read_u32(dev, "nuvoton,jack-eject-debounce",
+ &nau8821->jack_eject_debounce);
+ if (ret)
+ nau8821->jack_eject_debounce = 0;
+ ret = device_property_read_u32(dev, "nuvoton,dmic-clk-threshold",
+ &nau8821->dmic_clk_threshold);
+ if (ret)
+ nau8821->dmic_clk_threshold = 3072000;
+
+ return 0;
+}
+
+static void nau8821_init_regs(struct nau8821 *nau8821)
+{
+ struct regmap *regmap = nau8821->regmap;
+
+ /* Enable Bias/Vmid */
+ regmap_update_bits(regmap, NAU8821_R66_BIAS_ADJ,
+ NAU8821_BIAS_VMID, NAU8821_BIAS_VMID);
+ regmap_update_bits(regmap, NAU8821_R76_BOOST,
+ NAU8821_GLOBAL_BIAS_EN, NAU8821_GLOBAL_BIAS_EN);
+ /* VMID Tieoff setting and enable TESTDAC.
+ * This sets the analog DAC inputs to a '0' input signal to avoid
+ * any glitches due to power up transients in both the analog and
+ * digital DAC circuit.
+ */
+ regmap_update_bits(regmap, NAU8821_R66_BIAS_ADJ,
+ NAU8821_BIAS_VMID_SEL_MASK | NAU8821_BIAS_TESTDAC_EN,
+ (nau8821->vref_impedance << NAU8821_BIAS_VMID_SEL_SFT) |
+ NAU8821_BIAS_TESTDAC_EN);
+ /* Disable short Frame Sync detection logic */
+ regmap_update_bits(regmap, NAU8821_R1E_LEFT_TIME_SLOT,
+ NAU8821_DIS_FS_SHORT_DET, NAU8821_DIS_FS_SHORT_DET);
+ /* Disable Boost Driver, Automatic Short circuit protection enable */
+ regmap_update_bits(regmap, NAU8821_R76_BOOST,
+ NAU8821_PRECHARGE_DIS | NAU8821_HP_BOOST_DIS |
+ NAU8821_HP_BOOST_G_DIS | NAU8821_SHORT_SHUTDOWN_EN,
+ NAU8821_PRECHARGE_DIS | NAU8821_HP_BOOST_DIS |
+ NAU8821_HP_BOOST_G_DIS | NAU8821_SHORT_SHUTDOWN_EN);
+ /* Class G timer 64ms */
+ regmap_update_bits(regmap, NAU8821_R4B_CLASSG_CTRL,
+ NAU8821_CLASSG_TIMER_MASK,
+ 0x20 << NAU8821_CLASSG_TIMER_SFT);
+ /* Class AB bias current to 2x, DAC Capacitor enable MSB/LSB */
+ regmap_update_bits(regmap, NAU8821_R6A_ANALOG_CONTROL_2,
+ NAU8821_HP_NON_CLASSG_CURRENT_2xADJ |
+ NAU8821_DAC_CAPACITOR_MSB | NAU8821_DAC_CAPACITOR_LSB,
+ NAU8821_HP_NON_CLASSG_CURRENT_2xADJ |
+ NAU8821_DAC_CAPACITOR_MSB | NAU8821_DAC_CAPACITOR_LSB);
+ /* Disable DACR/L power */
+ regmap_update_bits(regmap, NAU8821_R80_CHARGE_PUMP,
+ NAU8821_POWER_DOWN_DACR | NAU8821_POWER_DOWN_DACL, 0);
+ /* DAC clock delay 2ns, VREF */
+ regmap_update_bits(regmap, NAU8821_R73_RDAC,
+ NAU8821_DAC_CLK_DELAY_MASK | NAU8821_DAC_VREF_MASK,
+ (0x2 << NAU8821_DAC_CLK_DELAY_SFT) |
+ (0x3 << NAU8821_DAC_VREF_SFT));
+
+ regmap_update_bits(regmap, NAU8821_R74_MIC_BIAS,
+ NAU8821_MICBIAS_VOLTAGE_MASK, nau8821->micbias_voltage);
+ /* Default oversampling/decimations settings are unusable
+ * (audible hiss). Set it to something better.
+ */
+ regmap_update_bits(regmap, NAU8821_R2B_ADC_RATE,
+ NAU8821_ADC_SYNC_DOWN_MASK, NAU8821_ADC_SYNC_DOWN_64);
+ regmap_update_bits(regmap, NAU8821_R2C_DAC_CTRL1,
+ NAU8821_DAC_OVERSAMPLE_MASK, NAU8821_DAC_OVERSAMPLE_64);
+}
+
+static int nau8821_setup_irq(struct nau8821 *nau8821)
+{
+ struct regmap *regmap = nau8821->regmap;
+
+ /* Jack detection */
+ regmap_update_bits(regmap, NAU8821_R1A_GPIO12_CTRL,
+ NAU8821_JKDET_OUTPUT_EN,
+ nau8821->jkdet_enable ? 0 : NAU8821_JKDET_OUTPUT_EN);
+ regmap_update_bits(regmap, NAU8821_R1A_GPIO12_CTRL,
+ NAU8821_JKDET_PULL_EN,
+ nau8821->jkdet_pull_enable ? 0 : NAU8821_JKDET_PULL_EN);
+ regmap_update_bits(regmap, NAU8821_R1A_GPIO12_CTRL,
+ NAU8821_JKDET_PULL_UP,
+ nau8821->jkdet_pull_up ? NAU8821_JKDET_PULL_UP : 0);
+ regmap_update_bits(regmap, NAU8821_R0D_JACK_DET_CTRL,
+ NAU8821_JACK_POLARITY,
+ /* jkdet_polarity - 1 is for active-low */
+ nau8821->jkdet_polarity ? 0 : NAU8821_JACK_POLARITY);
+ regmap_update_bits(regmap, NAU8821_R0D_JACK_DET_CTRL,
+ NAU8821_JACK_INSERT_DEBOUNCE_MASK,
+ nau8821->jack_insert_debounce <<
+ NAU8821_JACK_INSERT_DEBOUNCE_SFT);
+ regmap_update_bits(regmap, NAU8821_R0D_JACK_DET_CTRL,
+ NAU8821_JACK_EJECT_DEBOUNCE_MASK,
+ nau8821->jack_eject_debounce <<
+ NAU8821_JACK_EJECT_DEBOUNCE_SFT);
+ /* Pull up IRQ pin */
+ regmap_update_bits(regmap, NAU8821_R0F_INTERRUPT_MASK,
+ NAU8821_IRQ_PIN_PULL_UP | NAU8821_IRQ_PIN_PULL_EN |
+ NAU8821_IRQ_OUTPUT_EN, NAU8821_IRQ_PIN_PULL_UP |
+ NAU8821_IRQ_PIN_PULL_EN | NAU8821_IRQ_OUTPUT_EN);
+ /* Disable interruption before codec initiation done */
+ /* Mask unneeded IRQs: 1 - disable, 0 - enable */
+ regmap_update_bits(regmap, NAU8821_R0F_INTERRUPT_MASK, 0x3f5, 0x3f5);
+
+ return 0;
+}
+
+/* Please keep this list alphabetically sorted */
+static const struct dmi_system_id nau8821_quirk_table[] = {
+ {
+ /* Positivo CW14Q01P-V2 */
+ .matches = {
+ DMI_MATCH(DMI_SYS_VENDOR, "Positivo Tecnologia SA"),
+ DMI_MATCH(DMI_BOARD_NAME, "CW14Q01P-V2"),
+ },
+ .driver_data = (void *)(NAU8821_JD_ACTIVE_HIGH),
+ },
+ {}
+};
+
+static void nau8821_check_quirks(void)
+{
+ const struct dmi_system_id *dmi_id;
+
+ if (quirk_override != -1) {
+ nau8821_quirk = quirk_override;
+ return;
+ }
+
+ dmi_id = dmi_first_match(nau8821_quirk_table);
+ if (dmi_id)
+ nau8821_quirk = (unsigned long)dmi_id->driver_data;
+}
+
+static int nau8821_i2c_probe(struct i2c_client *i2c)
+{
+ struct device *dev = &i2c->dev;
+ struct nau8821 *nau8821 = dev_get_platdata(&i2c->dev);
+ int ret, value;
+
+ if (!nau8821) {
+ nau8821 = devm_kzalloc(dev, sizeof(*nau8821), GFP_KERNEL);
+ if (!nau8821)
+ return -ENOMEM;
+ nau8821_read_device_properties(dev, nau8821);
+ }
+ i2c_set_clientdata(i2c, nau8821);
+
+ nau8821->regmap = devm_regmap_init_i2c(i2c, &nau8821_regmap_config);
+ if (IS_ERR(nau8821->regmap))
+ return PTR_ERR(nau8821->regmap);
+
+ nau8821->dev = dev;
+ nau8821->irq = i2c->irq;
+
+ nau8821_check_quirks();
+
+ if (nau8821_quirk & NAU8821_JD_ACTIVE_HIGH)
+ nau8821->jkdet_polarity = 0;
+
+ nau8821_print_device_properties(nau8821);
+
+ nau8821_reset_chip(nau8821->regmap);
+ ret = regmap_read(nau8821->regmap, NAU8821_R58_I2C_DEVICE_ID, &value);
+ if (ret) {
+ dev_err(dev, "Failed to read device id (%d)\n", ret);
+ return ret;
+ }
+ nau8821_init_regs(nau8821);
+
+ if (i2c->irq)
+ nau8821_setup_irq(nau8821);
+
+ ret = devm_snd_soc_register_component(&i2c->dev,
+ &nau8821_component_driver, &nau8821_dai, 1);
+
+ return ret;
+}
+
+static const struct i2c_device_id nau8821_i2c_ids[] = {
+ { "nau8821", 0 },
+ { }
+};
+MODULE_DEVICE_TABLE(i2c, nau8821_i2c_ids);
+
+#ifdef CONFIG_OF
+static const struct of_device_id nau8821_of_ids[] = {
+ { .compatible = "nuvoton,nau8821", },
+ {}
+};
+MODULE_DEVICE_TABLE(of, nau8821_of_ids);
+#endif
+
+#ifdef CONFIG_ACPI
+static const struct acpi_device_id nau8821_acpi_match[] = {
+ { "NVTN2020", 0 },
+ {},
+};
+MODULE_DEVICE_TABLE(acpi, nau8821_acpi_match);
+#endif
+
+static struct i2c_driver nau8821_driver = {
+ .driver = {
+ .name = "nau8821",
+ .of_match_table = of_match_ptr(nau8821_of_ids),
+ .acpi_match_table = ACPI_PTR(nau8821_acpi_match),
+ },
+ .probe_new = nau8821_i2c_probe,
+ .id_table = nau8821_i2c_ids,
+};
+module_i2c_driver(nau8821_driver);
+
+MODULE_DESCRIPTION("ASoC nau8821 driver");
+MODULE_AUTHOR("John Hsu <kchsu0@nuvoton.com>");
+MODULE_AUTHOR("Seven Lee <wtli@nuvoton.com>");
+MODULE_LICENSE("GPL");
generated by cgit v1.2.3 (git 2.39.1) at 2024-12-11 20:04:00 +0000