--- /dev/null
+/*
+ * es8328.c -- ES8328 ALSA SoC Audio driver
+ *
+ * Copyright 2014 Sutajio Ko-Usagi PTE LTD
+ *
+ * Author: Sean Cross <xobs@kosagi.com>
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License version 2 as
+ * published by the Free Software Foundation.
+ */
+
+#include <linux/clk.h>
+#include <linux/delay.h>
+#include <linux/of_device.h>
+#include <linux/module.h>
+#include <linux/pm.h>
+#include <linux/regmap.h>
+#include <linux/slab.h>
+#include <linux/regulator/consumer.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 "es8328.h"
+
+#define ES8328_SYSCLK_RATE_1X 11289600
+#define ES8328_SYSCLK_RATE_2X 22579200
+
+/* Run the codec at 22.5792 or 11.2896 MHz to support these rates */
+static struct {
+ int rate;
+ u8 ratio;
+} mclk_ratios[] = {
+ { 8000, 9 },
+ {11025, 7 },
+ {22050, 4 },
+ {44100, 2 },
+};
+
+/* regulator supplies for sgtl5000, VDDD is an optional external supply */
+enum sgtl5000_regulator_supplies {
+ DVDD,
+ AVDD,
+ PVDD,
+ HPVDD,
+ ES8328_SUPPLY_NUM
+};
+
+/* vddd is optional supply */
+static const char * const supply_names[ES8328_SUPPLY_NUM] = {
+ "DVDD",
+ "AVDD",
+ "PVDD",
+ "HPVDD",
+};
+
+#define ES8328_RATES (SNDRV_PCM_RATE_44100 | \
+ SNDRV_PCM_RATE_22050 | \
+ SNDRV_PCM_RATE_11025)
+#define ES8328_FORMATS (SNDRV_PCM_FMTBIT_S16_LE)
+
+struct es8328_priv {
+ struct regmap *regmap;
+ struct clk *clk;
+ int playback_fs;
+ bool deemph;
+ struct regulator_bulk_data supplies[ES8328_SUPPLY_NUM];
+};
+
+/*
+ * ES8328 Controls
+ */
+
+static const char * const adcpol_txt[] = {"Normal", "L Invert", "R Invert",
+ "L + R Invert"};
+static SOC_ENUM_SINGLE_DECL(adcpol,
+ ES8328_ADCCONTROL6, 6, adcpol_txt);
+
+static const DECLARE_TLV_DB_SCALE(play_tlv, -3000, 100, 0);
+static const DECLARE_TLV_DB_SCALE(dac_adc_tlv, -9600, 50, 0);
+static const DECLARE_TLV_DB_SCALE(pga_tlv, 0, 300, 0);
+static const DECLARE_TLV_DB_SCALE(bypass_tlv, -1500, 300, 0);
+static const DECLARE_TLV_DB_SCALE(mic_tlv, 0, 300, 0);
+
+static const int deemph_settings[] = { 0, 32000, 44100, 48000 };
+
+static int es8328_set_deemph(struct snd_soc_codec *codec)
+{
+ struct es8328_priv *es8328 = snd_soc_codec_get_drvdata(codec);
+ int val, i, best;
+
+ /*
+ * If we're using deemphasis select the nearest available sample
+ * rate.
+ */
+ if (es8328->deemph) {
+ best = 1;
+ for (i = 2; i < ARRAY_SIZE(deemph_settings); i++) {
+ if (abs(deemph_settings[i] - es8328->playback_fs) <
+ abs(deemph_settings[best] - es8328->playback_fs))
+ best = i;
+ }
+
+ val = best << 1;
+ } else {
+ val = 0;
+ }
+
+ dev_dbg(codec->dev, "Set deemphasis %d\n", val);
+
+ return snd_soc_update_bits(codec, ES8328_DACCONTROL6, 0x6, val);
+}
+
+static int es8328_get_deemph(struct snd_kcontrol *kcontrol,
+ struct snd_ctl_elem_value *ucontrol)
+{
+ struct snd_soc_codec *codec = snd_soc_kcontrol_codec(kcontrol);
+ struct es8328_priv *es8328 = snd_soc_codec_get_drvdata(codec);
+
+ ucontrol->value.integer.value[0] = es8328->deemph;
+ return 0;
+}
+
+static int es8328_put_deemph(struct snd_kcontrol *kcontrol,
+ struct snd_ctl_elem_value *ucontrol)
+{
+ struct snd_soc_codec *codec = snd_soc_kcontrol_codec(kcontrol);
+ struct es8328_priv *es8328 = snd_soc_codec_get_drvdata(codec);
+ int deemph = ucontrol->value.integer.value[0];
+ int ret;
+
+ if (deemph > 1)
+ return -EINVAL;
+
+ ret = es8328_set_deemph(codec);
+ if (ret < 0)
+ return ret;
+
+ es8328->deemph = deemph;
+
+ return 0;
+}
+
+
+
+static const struct snd_kcontrol_new es8328_snd_controls[] = {
+ SOC_DOUBLE_R_TLV("Capture Digital Volume",
+ ES8328_ADCCONTROL8, ES8328_ADCCONTROL9,
+ 0, 0xc0, 1, dac_adc_tlv),
+ SOC_SINGLE("Capture ZC Switch", ES8328_ADCCONTROL7, 6, 1, 0),
+
+ SOC_SINGLE_BOOL_EXT("DAC Deemphasis Switch", 0,
+ es8328_get_deemph, es8328_put_deemph),
+
+ SOC_ENUM("Capture Polarity", adcpol),
+
+ SOC_SINGLE_TLV("Left Mixer Left Bypass Volume",
+ ES8328_DACCONTROL17, 3, 7, 1, bypass_tlv),
+ SOC_SINGLE_TLV("Left Mixer Right Bypass Volume",
+ ES8328_DACCONTROL19, 3, 7, 1, bypass_tlv),
+ SOC_SINGLE_TLV("Right Mixer Left Bypass Volume",
+ ES8328_DACCONTROL18, 3, 7, 1, bypass_tlv),
+ SOC_SINGLE_TLV("Right Mixer Right Bypass Volume",
+ ES8328_DACCONTROL20, 3, 7, 1, bypass_tlv),
+
+ SOC_DOUBLE_R_TLV("PCM Volume",
+ ES8328_LDACVOL, ES8328_RDACVOL,
+ 0, ES8328_DACVOL_MAX, 1, dac_adc_tlv),
+
+ SOC_DOUBLE_R_TLV("Output 1 Playback Volume",
+ ES8328_LOUT1VOL, ES8328_ROUT1VOL,
+ 0, ES8328_OUT1VOL_MAX, 0, play_tlv),
+
+ SOC_DOUBLE_R_TLV("Output 2 Playback Volume",
+ ES8328_LOUT2VOL, ES8328_ROUT2VOL,
+ 0, ES8328_OUT2VOL_MAX, 0, play_tlv),
+
+ SOC_DOUBLE_TLV("Mic PGA Volume", ES8328_ADCCONTROL1,
+ 4, 0, 8, 0, mic_tlv),
+};
+
+/*
+ * DAPM Controls
+ */
+
+static const char * const es8328_line_texts[] = {
+ "Line 1", "Line 2", "PGA", "Differential"};
+
+static const struct soc_enum es8328_lline_enum =
+ SOC_ENUM_SINGLE(ES8328_DACCONTROL16, 3,
+ ARRAY_SIZE(es8328_line_texts),
+ es8328_line_texts);
+static const struct snd_kcontrol_new es8328_left_line_controls =
+ SOC_DAPM_ENUM("Route", es8328_lline_enum);
+
+static const struct soc_enum es8328_rline_enum =
+ SOC_ENUM_SINGLE(ES8328_DACCONTROL16, 0,
+ ARRAY_SIZE(es8328_line_texts),
+ es8328_line_texts);
+static const struct snd_kcontrol_new es8328_right_line_controls =
+ SOC_DAPM_ENUM("Route", es8328_lline_enum);
+
+/* Left Mixer */
+static const struct snd_kcontrol_new es8328_left_mixer_controls[] = {
+ SOC_DAPM_SINGLE("Playback Switch", ES8328_DACCONTROL17, 8, 1, 0),
+ SOC_DAPM_SINGLE("Left Bypass Switch", ES8328_DACCONTROL17, 7, 1, 0),
+ SOC_DAPM_SINGLE("Right Playback Switch", ES8328_DACCONTROL18, 8, 1, 0),
+ SOC_DAPM_SINGLE("Right Bypass Switch", ES8328_DACCONTROL18, 7, 1, 0),
+};
+
+/* Right Mixer */
+static const struct snd_kcontrol_new es8328_right_mixer_controls[] = {
+ SOC_DAPM_SINGLE("Left Playback Switch", ES8328_DACCONTROL19, 8, 1, 0),
+ SOC_DAPM_SINGLE("Left Bypass Switch", ES8328_DACCONTROL19, 7, 1, 0),
+ SOC_DAPM_SINGLE("Playback Switch", ES8328_DACCONTROL20, 8, 1, 0),
+ SOC_DAPM_SINGLE("Right Bypass Switch", ES8328_DACCONTROL20, 7, 1, 0),
+};
+
+static const char * const es8328_pga_sel[] = {
+ "Line 1", "Line 2", "Line 3", "Differential"};
+
+/* Left PGA Mux */
+static const struct soc_enum es8328_lpga_enum =
+ SOC_ENUM_SINGLE(ES8328_ADCCONTROL2, 6,
+ ARRAY_SIZE(es8328_pga_sel),
+ es8328_pga_sel);
+static const struct snd_kcontrol_new es8328_left_pga_controls =
+ SOC_DAPM_ENUM("Route", es8328_lpga_enum);
+
+/* Right PGA Mux */
+static const struct soc_enum es8328_rpga_enum =
+ SOC_ENUM_SINGLE(ES8328_ADCCONTROL2, 4,
+ ARRAY_SIZE(es8328_pga_sel),
+ es8328_pga_sel);
+static const struct snd_kcontrol_new es8328_right_pga_controls =
+ SOC_DAPM_ENUM("Route", es8328_rpga_enum);
+
+/* Differential Mux */
+static const char * const es8328_diff_sel[] = {"Line 1", "Line 2"};
+static SOC_ENUM_SINGLE_DECL(diffmux,
+ ES8328_ADCCONTROL3, 7, es8328_diff_sel);
+static const struct snd_kcontrol_new es8328_diffmux_controls =
+ SOC_DAPM_ENUM("Route", diffmux);
+
+/* Mono ADC Mux */
+static const char * const es8328_mono_mux[] = {"Stereo", "Mono (Left)",
+ "Mono (Right)", "Digital Mono"};
+static SOC_ENUM_SINGLE_DECL(monomux,
+ ES8328_ADCCONTROL3, 3, es8328_mono_mux);
+static const struct snd_kcontrol_new es8328_monomux_controls =
+ SOC_DAPM_ENUM("Route", monomux);
+
+static const struct snd_soc_dapm_widget es8328_dapm_widgets[] = {
+ SND_SOC_DAPM_MUX("Differential Mux", SND_SOC_NOPM, 0, 0,
+ &es8328_diffmux_controls),
+ SND_SOC_DAPM_MUX("Left ADC Mux", SND_SOC_NOPM, 0, 0,
+ &es8328_monomux_controls),
+ SND_SOC_DAPM_MUX("Right ADC Mux", SND_SOC_NOPM, 0, 0,
+ &es8328_monomux_controls),
+
+ SND_SOC_DAPM_MUX("Left PGA Mux", ES8328_ADCPOWER,
+ ES8328_ADCPOWER_AINL_OFF, 1,
+ &es8328_left_pga_controls),
+ SND_SOC_DAPM_MUX("Right PGA Mux", ES8328_ADCPOWER,
+ ES8328_ADCPOWER_AINR_OFF, 1,
+ &es8328_right_pga_controls),
+
+ SND_SOC_DAPM_MUX("Left Line Mux", SND_SOC_NOPM, 0, 0,
+ &es8328_left_line_controls),
+ SND_SOC_DAPM_MUX("Right Line Mux", SND_SOC_NOPM, 0, 0,
+ &es8328_right_line_controls),
+
+ SND_SOC_DAPM_ADC("Right ADC", "Right Capture", ES8328_ADCPOWER,
+ ES8328_ADCPOWER_ADCR_OFF, 1),
+ SND_SOC_DAPM_ADC("Left ADC", "Left Capture", ES8328_ADCPOWER,
+ ES8328_ADCPOWER_ADCL_OFF, 1),
+
+ SND_SOC_DAPM_SUPPLY("Mic Bias", ES8328_ADCPOWER,
+ ES8328_ADCPOWER_MIC_BIAS_OFF, 1, NULL, 0),
+ SND_SOC_DAPM_SUPPLY("Mic Bias Gen", ES8328_ADCPOWER,
+ ES8328_ADCPOWER_ADC_BIAS_GEN_OFF, 1, NULL, 0),
+
+ SND_SOC_DAPM_SUPPLY("DAC STM", ES8328_CHIPPOWER,
+ ES8328_CHIPPOWER_DACSTM_RESET, 1, NULL, 0),
+ SND_SOC_DAPM_SUPPLY("ADC STM", ES8328_CHIPPOWER,
+ ES8328_CHIPPOWER_ADCSTM_RESET, 1, NULL, 0),
+
+ SND_SOC_DAPM_SUPPLY("DAC DIG", ES8328_CHIPPOWER,
+ ES8328_CHIPPOWER_DACDIG_OFF, 1, NULL, 0),
+ SND_SOC_DAPM_SUPPLY("ADC DIG", ES8328_CHIPPOWER,
+ ES8328_CHIPPOWER_ADCDIG_OFF, 1, NULL, 0),
+
+ SND_SOC_DAPM_SUPPLY("DAC DLL", ES8328_CHIPPOWER,
+ ES8328_CHIPPOWER_DACDLL_OFF, 1, NULL, 0),
+ SND_SOC_DAPM_SUPPLY("ADC DLL", ES8328_CHIPPOWER,
+ ES8328_CHIPPOWER_ADCDLL_OFF, 1, NULL, 0),
+
+ SND_SOC_DAPM_SUPPLY("ADC Vref", ES8328_CHIPPOWER,
+ ES8328_CHIPPOWER_ADCVREF_OFF, 1, NULL, 0),
+ SND_SOC_DAPM_SUPPLY("DAC Vref", ES8328_CHIPPOWER,
+ ES8328_CHIPPOWER_DACVREF_OFF, 1, NULL, 0),
+
+ SND_SOC_DAPM_DAC("Right DAC", "Right Playback", ES8328_DACPOWER,
+ ES8328_DACPOWER_RDAC_OFF, 1),
+ SND_SOC_DAPM_DAC("Left DAC", "Left Playback", ES8328_DACPOWER,
+ ES8328_DACPOWER_LDAC_OFF, 1),
+
+ SND_SOC_DAPM_MIXER("Left Mixer", SND_SOC_NOPM, 0, 0,
+ &es8328_left_mixer_controls[0],
+ ARRAY_SIZE(es8328_left_mixer_controls)),
+ SND_SOC_DAPM_MIXER("Right Mixer", SND_SOC_NOPM, 0, 0,
+ &es8328_right_mixer_controls[0],
+ ARRAY_SIZE(es8328_right_mixer_controls)),
+
+ SND_SOC_DAPM_PGA("Right Out 2", ES8328_DACPOWER,
+ ES8328_DACPOWER_ROUT2_ON, 0, NULL, 0),
+ SND_SOC_DAPM_PGA("Left Out 2", ES8328_DACPOWER,
+ ES8328_DACPOWER_LOUT2_ON, 0, NULL, 0),
+ SND_SOC_DAPM_PGA("Right Out 1", ES8328_DACPOWER,
+ ES8328_DACPOWER_ROUT1_ON, 0, NULL, 0),
+ SND_SOC_DAPM_PGA("Left Out 1", ES8328_DACPOWER,
+ ES8328_DACPOWER_LOUT1_ON, 0, NULL, 0),
+
+ SND_SOC_DAPM_OUTPUT("LOUT1"),
+ SND_SOC_DAPM_OUTPUT("ROUT1"),
+ SND_SOC_DAPM_OUTPUT("LOUT2"),
+ SND_SOC_DAPM_OUTPUT("ROUT2"),
+
+ SND_SOC_DAPM_INPUT("LINPUT1"),
+ SND_SOC_DAPM_INPUT("LINPUT2"),
+ SND_SOC_DAPM_INPUT("RINPUT1"),
+ SND_SOC_DAPM_INPUT("RINPUT2"),
+};
+
+static const struct snd_soc_dapm_route es8328_dapm_routes[] = {
+
+ { "Left Line Mux", "Line 1", "LINPUT1" },
+ { "Left Line Mux", "Line 2", "LINPUT2" },
+ { "Left Line Mux", "PGA", "Left PGA Mux" },
+ { "Left Line Mux", "Differential", "Differential Mux" },
+
+ { "Right Line Mux", "Line 1", "RINPUT1" },
+ { "Right Line Mux", "Line 2", "RINPUT2" },
+ { "Right Line Mux", "PGA", "Right PGA Mux" },
+ { "Right Line Mux", "Differential", "Differential Mux" },
+
+ { "Left PGA Mux", "Line 1", "LINPUT1" },
+ { "Left PGA Mux", "Line 2", "LINPUT2" },
+ { "Left PGA Mux", "Differential", "Differential Mux" },
+
+ { "Right PGA Mux", "Line 1", "RINPUT1" },
+ { "Right PGA Mux", "Line 2", "RINPUT2" },
+ { "Right PGA Mux", "Differential", "Differential Mux" },
+
+ { "Differential Mux", "Line 1", "LINPUT1" },
+ { "Differential Mux", "Line 1", "RINPUT1" },
+ { "Differential Mux", "Line 2", "LINPUT2" },
+ { "Differential Mux", "Line 2", "RINPUT2" },
+
+ { "Left ADC Mux", "Stereo", "Left PGA Mux" },
+ { "Left ADC Mux", "Mono (Left)", "Left PGA Mux" },
+ { "Left ADC Mux", "Digital Mono", "Left PGA Mux" },
+
+ { "Right ADC Mux", "Stereo", "Right PGA Mux" },
+ { "Right ADC Mux", "Mono (Right)", "Right PGA Mux" },
+ { "Right ADC Mux", "Digital Mono", "Right PGA Mux" },
+
+ { "Left ADC", NULL, "Left ADC Mux" },
+ { "Right ADC", NULL, "Right ADC Mux" },
+
+ { "ADC DIG", NULL, "ADC STM" },
+ { "ADC DIG", NULL, "ADC Vref" },
+ { "ADC DIG", NULL, "ADC DLL" },
+
+ { "Left ADC", NULL, "ADC DIG" },
+ { "Right ADC", NULL, "ADC DIG" },
+
+ { "Mic Bias", NULL, "Mic Bias Gen" },
+
+ { "Left Line Mux", "Line 1", "LINPUT1" },
+ { "Left Line Mux", "Line 2", "LINPUT2" },
+ { "Left Line Mux", "PGA", "Left PGA Mux" },
+ { "Left Line Mux", "Differential", "Differential Mux" },
+
+ { "Right Line Mux", "Line 1", "RINPUT1" },
+ { "Right Line Mux", "Line 2", "RINPUT2" },
+ { "Right Line Mux", "PGA", "Right PGA Mux" },
+ { "Right Line Mux", "Differential", "Differential Mux" },
+
+ { "Left Out 1", NULL, "Left DAC" },
+ { "Right Out 1", NULL, "Right DAC" },
+ { "Left Out 2", NULL, "Left DAC" },
+ { "Right Out 2", NULL, "Right DAC" },
+
+ { "Left Mixer", "Playback Switch", "Left DAC" },
+ { "Left Mixer", "Left Bypass Switch", "Left Line Mux" },
+ { "Left Mixer", "Right Playback Switch", "Right DAC" },
+ { "Left Mixer", "Right Bypass Switch", "Right Line Mux" },
+
+ { "Right Mixer", "Left Playback Switch", "Left DAC" },
+ { "Right Mixer", "Left Bypass Switch", "Left Line Mux" },
+ { "Right Mixer", "Playback Switch", "Right DAC" },
+ { "Right Mixer", "Right Bypass Switch", "Right Line Mux" },
+
+ { "DAC DIG", NULL, "DAC STM" },
+ { "DAC DIG", NULL, "DAC Vref" },
+ { "DAC DIG", NULL, "DAC DLL" },
+
+ { "Left DAC", NULL, "DAC DIG" },
+ { "Right DAC", NULL, "DAC DIG" },
+
+ { "Left Out 1", NULL, "Left Mixer" },
+ { "LOUT1", NULL, "Left Out 1" },
+ { "Right Out 1", NULL, "Right Mixer" },
+ { "ROUT1", NULL, "Right Out 1" },
+
+ { "Left Out 2", NULL, "Left Mixer" },
+ { "LOUT2", NULL, "Left Out 2" },
+ { "Right Out 2", NULL, "Right Mixer" },
+ { "ROUT2", NULL, "Right Out 2" },
+};
+
+static int es8328_mute(struct snd_soc_dai *dai, int mute)
+{
+ return snd_soc_update_bits(dai->codec, ES8328_DACCONTROL3,
+ ES8328_DACCONTROL3_DACMUTE,
+ mute ? ES8328_DACCONTROL3_DACMUTE : 0);
+}
+
+static int es8328_hw_params(struct snd_pcm_substream *substream,
+ struct snd_pcm_hw_params *params,
+ struct snd_soc_dai *dai)
+{
+ struct snd_soc_codec *codec = dai->codec;
+ struct es8328_priv *es8328 = snd_soc_codec_get_drvdata(codec);
+ int clk_rate;
+ int i;
+ int reg;
+ u8 ratio;
+
+ if (substream->stream == SNDRV_PCM_STREAM_PLAYBACK)
+ reg = ES8328_DACCONTROL2;
+ else
+ reg = ES8328_ADCCONTROL5;
+
+ clk_rate = clk_get_rate(es8328->clk);
+
+ if ((clk_rate != ES8328_SYSCLK_RATE_1X) &&
+ (clk_rate != ES8328_SYSCLK_RATE_2X)) {
+ dev_err(codec->dev,
+ "%s: clock is running at %d Hz, not %d or %d Hz\n",
+ __func__, clk_rate,
+ ES8328_SYSCLK_RATE_1X, ES8328_SYSCLK_RATE_2X);
+ return -EINVAL;
+ }
+
+ /* find master mode MCLK to sampling frequency ratio */
+ ratio = mclk_ratios[0].rate;
+ for (i = 1; i < ARRAY_SIZE(mclk_ratios); i++)
+ if (params_rate(params) <= mclk_ratios[i].rate)
+ ratio = mclk_ratios[i].ratio;
+
+ if (substream->stream == SNDRV_PCM_STREAM_PLAYBACK) {
+ es8328->playback_fs = params_rate(params);
+ es8328_set_deemph(codec);
+ }
+
+ return snd_soc_update_bits(codec, reg, ES8328_RATEMASK, ratio);
+}
+
+static int es8328_set_dai_fmt(struct snd_soc_dai *codec_dai,
+ unsigned int fmt)
+{
+ struct snd_soc_codec *codec = codec_dai->codec;
+ struct es8328_priv *es8328 = snd_soc_codec_get_drvdata(codec);
+ int clk_rate;
+ u8 mode = ES8328_DACCONTROL1_DACWL_16;
+
+ /* set master/slave audio interface */
+ if ((fmt & SND_SOC_DAIFMT_MASTER_MASK) != SND_SOC_DAIFMT_CBM_CFM)
+ return -EINVAL;
+
+ /* interface format */
+ switch (fmt & SND_SOC_DAIFMT_FORMAT_MASK) {
+ case SND_SOC_DAIFMT_I2S:
+ mode |= ES8328_DACCONTROL1_DACFORMAT_I2S;
+ break;
+ case SND_SOC_DAIFMT_RIGHT_J:
+ mode |= ES8328_DACCONTROL1_DACFORMAT_RJUST;
+ break;
+ case SND_SOC_DAIFMT_LEFT_J:
+ mode |= ES8328_DACCONTROL1_DACFORMAT_LJUST;
+ break;
+ default:
+ return -EINVAL;
+ }
+
+ /* clock inversion */
+ if ((fmt & SND_SOC_DAIFMT_INV_MASK) != SND_SOC_DAIFMT_NB_NF)
+ return -EINVAL;
+
+ snd_soc_write(codec, ES8328_DACCONTROL1, mode);
+ snd_soc_write(codec, ES8328_ADCCONTROL4, mode);
+
+ /* Master serial port mode, with BCLK generated automatically */
+ clk_rate = clk_get_rate(es8328->clk);
+ if (clk_rate == ES8328_SYSCLK_RATE_1X)
+ snd_soc_write(codec, ES8328_MASTERMODE,
+ ES8328_MASTERMODE_MSC);
+ else
+ snd_soc_write(codec, ES8328_MASTERMODE,
+ ES8328_MASTERMODE_MCLKDIV2 |
+ ES8328_MASTERMODE_MSC);
+
+ return 0;
+}
+
+static int es8328_set_bias_level(struct snd_soc_codec *codec,
+ enum snd_soc_bias_level level)
+{
+ switch (level) {
+ case SND_SOC_BIAS_ON:
+ break;
+
+ case SND_SOC_BIAS_PREPARE:
+ /* VREF, VMID=2x50k, digital enabled */
+ snd_soc_write(codec, ES8328_CHIPPOWER, 0);
+ snd_soc_update_bits(codec, ES8328_CONTROL1,
+ ES8328_CONTROL1_VMIDSEL_MASK |
+ ES8328_CONTROL1_ENREF,
+ ES8328_CONTROL1_VMIDSEL_50k |
+ ES8328_CONTROL1_ENREF);
+ break;
+
+ case SND_SOC_BIAS_STANDBY:
+ if (codec->dapm.bias_level == SND_SOC_BIAS_OFF) {
+ snd_soc_update_bits(codec, ES8328_CONTROL1,
+ ES8328_CONTROL1_VMIDSEL_MASK |
+ ES8328_CONTROL1_ENREF,
+ ES8328_CONTROL1_VMIDSEL_5k |
+ ES8328_CONTROL1_ENREF);
+
+ /* Charge caps */
+ msleep(100);
+ }
+
+ snd_soc_write(codec, ES8328_CONTROL2,
+ ES8328_CONTROL2_OVERCURRENT_ON |
+ ES8328_CONTROL2_THERMAL_SHUTDOWN_ON);
+
+ /* VREF, VMID=2*500k, digital stopped */
+ snd_soc_update_bits(codec, ES8328_CONTROL1,
+ ES8328_CONTROL1_VMIDSEL_MASK |
+ ES8328_CONTROL1_ENREF,
+ ES8328_CONTROL1_VMIDSEL_500k |
+ ES8328_CONTROL1_ENREF);
+ break;
+
+ case SND_SOC_BIAS_OFF:
+ snd_soc_update_bits(codec, ES8328_CONTROL1,
+ ES8328_CONTROL1_VMIDSEL_MASK |
+ ES8328_CONTROL1_ENREF,
+ 0);
+ break;
+ }
+ codec->dapm.bias_level = level;
+ return 0;
+}
+
+static const struct snd_soc_dai_ops es8328_dai_ops = {
+ .hw_params = es8328_hw_params,
+ .digital_mute = es8328_mute,
+ .set_fmt = es8328_set_dai_fmt,
+};
+
+static struct snd_soc_dai_driver es8328_dai = {
+ .name = "es8328-hifi-analog",
+ .playback = {
+ .stream_name = "Playback",
+ .channels_min = 2,
+ .channels_max = 2,
+ .rates = ES8328_RATES,
+ .formats = ES8328_FORMATS,
+ },
+ .capture = {
+ .stream_name = "Capture",
+ .channels_min = 2,
+ .channels_max = 2,
+ .rates = ES8328_RATES,
+ .formats = ES8328_FORMATS,
+ },
+ .ops = &es8328_dai_ops,
+};
+
+static int es8328_suspend(struct snd_soc_codec *codec)
+{
+ struct es8328_priv *es8328;
+ int ret;
+
+ es8328 = snd_soc_codec_get_drvdata(codec);
+
+ clk_disable_unprepare(es8328->clk);
+
+ ret = regulator_bulk_disable(ARRAY_SIZE(es8328->supplies),
+ es8328->supplies);
+ if (ret) {
+ dev_err(codec->dev, "unable to disable regulators\n");
+ return ret;
+ }
+ return 0;
+}
+
+static int es8328_resume(struct snd_soc_codec *codec)
+{
+ struct regmap *regmap = dev_get_regmap(codec->dev, NULL);
+ struct es8328_priv *es8328;
+ int ret;
+
+ es8328 = snd_soc_codec_get_drvdata(codec);
+
+ ret = clk_prepare_enable(es8328->clk);
+ if (ret) {
+ dev_err(codec->dev, "unable to enable clock\n");
+ return ret;
+ }
+
+ ret = regulator_bulk_enable(ARRAY_SIZE(es8328->supplies),
+ es8328->supplies);
+ if (ret) {
+ dev_err(codec->dev, "unable to enable regulators\n");
+ return ret;
+ }
+
+ regcache_mark_dirty(regmap);
+ ret = regcache_sync(regmap);
+ if (ret) {
+ dev_err(codec->dev, "unable to sync regcache\n");
+ return ret;
+ }
+
+ return 0;
+}
+
+static int es8328_codec_probe(struct snd_soc_codec *codec)
+{
+ struct es8328_priv *es8328;
+ int ret;
+
+ es8328 = snd_soc_codec_get_drvdata(codec);
+
+ ret = regulator_bulk_enable(ARRAY_SIZE(es8328->supplies),
+ es8328->supplies);
+ if (ret) {
+ dev_err(codec->dev, "unable to enable regulators\n");
+ return ret;
+ }
+
+ /* Setup clocks */
+ es8328->clk = devm_clk_get(codec->dev, NULL);
+ if (IS_ERR(es8328->clk)) {
+ dev_err(codec->dev, "codec clock missing or invalid\n");
+ ret = PTR_ERR(es8328->clk);
+ goto clk_fail;
+ }
+
+ ret = clk_prepare_enable(es8328->clk);
+ if (ret) {
+ dev_err(codec->dev, "unable to prepare codec clk\n");
+ goto clk_fail;
+ }
+
+ return 0;
+
+clk_fail:
+ regulator_bulk_disable(ARRAY_SIZE(es8328->supplies),
+ es8328->supplies);
+ return ret;
+}
+
+static int es8328_remove(struct snd_soc_codec *codec)
+{
+ struct es8328_priv *es8328;
+
+ es8328 = snd_soc_codec_get_drvdata(codec);
+
+ if (es8328->clk)
+ clk_disable_unprepare(es8328->clk);
+
+ regulator_bulk_disable(ARRAY_SIZE(es8328->supplies),
+ es8328->supplies);
+
+ return 0;
+}
+
+const struct regmap_config es8328_regmap_config = {
+ .reg_bits = 8,
+ .val_bits = 8,
+ .max_register = ES8328_REG_MAX,
+ .cache_type = REGCACHE_RBTREE,
+};
+EXPORT_SYMBOL_GPL(es8328_regmap_config);
+
+static struct snd_soc_codec_driver es8328_codec_driver = {
+ .probe = es8328_codec_probe,
+ .suspend = es8328_suspend,
+ .resume = es8328_resume,
+ .remove = es8328_remove,
+ .set_bias_level = es8328_set_bias_level,
+ .suspend_bias_off = true,
+
+ .controls = es8328_snd_controls,
+ .num_controls = ARRAY_SIZE(es8328_snd_controls),
+ .dapm_widgets = es8328_dapm_widgets,
+ .num_dapm_widgets = ARRAY_SIZE(es8328_dapm_widgets),
+ .dapm_routes = es8328_dapm_routes,
+ .num_dapm_routes = ARRAY_SIZE(es8328_dapm_routes),
+};
+
+int es8328_probe(struct device *dev, struct regmap *regmap)
+{
+ struct es8328_priv *es8328;
+ int ret;
+ int i;
+
+ if (IS_ERR(regmap))
+ return PTR_ERR(regmap);
+
+ es8328 = devm_kzalloc(dev, sizeof(*es8328), GFP_KERNEL);
+ if (es8328 == NULL)
+ return -ENOMEM;
+
+ es8328->regmap = regmap;
+
+ for (i = 0; i < ARRAY_SIZE(es8328->supplies); i++)
+ es8328->supplies[i].supply = supply_names[i];
+
+ ret = devm_regulator_bulk_get(dev, ARRAY_SIZE(es8328->supplies),
+ es8328->supplies);
+ if (ret) {
+ dev_err(dev, "unable to get regulators\n");
+ return ret;
+ }
+
+ dev_set_drvdata(dev, es8328);
+
+ return snd_soc_register_codec(dev,
+ &es8328_codec_driver, &es8328_dai, 1);
+}
+EXPORT_SYMBOL_GPL(es8328_probe);
+
+MODULE_DESCRIPTION("ASoC ES8328 driver");
+MODULE_AUTHOR("Sean Cross <xobs@kosagi.com>");
+MODULE_LICENSE("GPL");
Code Review / kvmfornfv.git / blobdiff