--- /dev/null
+/*
+ * ak4535.c -- AK4535 ALSA Soc Audio driver
+ *
+ * Copyright 2005 Openedhand Ltd.
+ *
+ * Author: Richard Purdie <richard@openedhand.com>
+ *
+ * Based on wm8753.c by Liam Girdwood
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License version 2 as
+ * published by the Free Software Foundation.
+ */
+
+#include <linux/module.h>
+#include <linux/moduleparam.h>
+#include <linux/init.h>
+#include <linux/delay.h>
+#include <linux/pm.h>
+#include <linux/i2c.h>
+#include <linux/regmap.h>
+#include <linux/slab.h>
+#include <sound/core.h>
+#include <sound/pcm.h>
+#include <sound/pcm_params.h>
+#include <sound/soc.h>
+#include <sound/initval.h>
+
+#include "ak4535.h"
+
+/* codec private data */
+struct ak4535_priv {
+ struct regmap *regmap;
+ unsigned int sysclk;
+};
+
+/*
+ * ak4535 register cache
+ */
+static const struct reg_default ak4535_reg_defaults[] = {
+ { 0, 0x00 },
+ { 1, 0x80 },
+ { 2, 0x00 },
+ { 3, 0x03 },
+ { 4, 0x02 },
+ { 5, 0x00 },
+ { 6, 0x11 },
+ { 7, 0x01 },
+ { 8, 0x00 },
+ { 9, 0x40 },
+ { 10, 0x36 },
+ { 11, 0x10 },
+ { 12, 0x00 },
+ { 13, 0x00 },
+ { 14, 0x57 },
+};
+
+static bool ak4535_volatile(struct device *dev, unsigned int reg)
+{
+ switch (reg) {
+ case AK4535_STATUS:
+ return true;
+ default:
+ return false;
+ }
+}
+
+static const char *ak4535_mono_gain[] = {"+6dB", "-17dB"};
+static const char *ak4535_mono_out[] = {"(L + R)/2", "Hi-Z"};
+static const char *ak4535_hp_out[] = {"Stereo", "Mono"};
+static const char *ak4535_deemp[] = {"44.1kHz", "Off", "48kHz", "32kHz"};
+static const char *ak4535_mic_select[] = {"Internal", "External"};
+
+static const struct soc_enum ak4535_enum[] = {
+ SOC_ENUM_SINGLE(AK4535_SIG1, 7, 2, ak4535_mono_gain),
+ SOC_ENUM_SINGLE(AK4535_SIG1, 6, 2, ak4535_mono_out),
+ SOC_ENUM_SINGLE(AK4535_MODE2, 2, 2, ak4535_hp_out),
+ SOC_ENUM_SINGLE(AK4535_DAC, 0, 4, ak4535_deemp),
+ SOC_ENUM_SINGLE(AK4535_MIC, 1, 2, ak4535_mic_select),
+};
+
+static const struct snd_kcontrol_new ak4535_snd_controls[] = {
+ SOC_SINGLE("ALC2 Switch", AK4535_SIG1, 1, 1, 0),
+ SOC_ENUM("Mono 1 Output", ak4535_enum[1]),
+ SOC_ENUM("Mono 1 Gain", ak4535_enum[0]),
+ SOC_ENUM("Headphone Output", ak4535_enum[2]),
+ SOC_ENUM("Playback Deemphasis", ak4535_enum[3]),
+ SOC_SINGLE("Bass Volume", AK4535_DAC, 2, 3, 0),
+ SOC_SINGLE("Mic Boost (+20dB) Switch", AK4535_MIC, 0, 1, 0),
+ SOC_ENUM("Mic Select", ak4535_enum[4]),
+ SOC_SINGLE("ALC Operation Time", AK4535_TIMER, 0, 3, 0),
+ SOC_SINGLE("ALC Recovery Time", AK4535_TIMER, 2, 3, 0),
+ SOC_SINGLE("ALC ZC Time", AK4535_TIMER, 4, 3, 0),
+ SOC_SINGLE("ALC 1 Switch", AK4535_ALC1, 5, 1, 0),
+ SOC_SINGLE("ALC 2 Switch", AK4535_ALC1, 6, 1, 0),
+ SOC_SINGLE("ALC Volume", AK4535_ALC2, 0, 127, 0),
+ SOC_SINGLE("Capture Volume", AK4535_PGA, 0, 127, 0),
+ SOC_SINGLE("Left Playback Volume", AK4535_LATT, 0, 127, 1),
+ SOC_SINGLE("Right Playback Volume", AK4535_RATT, 0, 127, 1),
+ SOC_SINGLE("AUX Bypass Volume", AK4535_VOL, 0, 15, 0),
+ SOC_SINGLE("Mic Sidetone Volume", AK4535_VOL, 4, 7, 0),
+};
+
+/* Mono 1 Mixer */
+static const struct snd_kcontrol_new ak4535_mono1_mixer_controls[] = {
+ SOC_DAPM_SINGLE("Mic Sidetone Switch", AK4535_SIG1, 4, 1, 0),
+ SOC_DAPM_SINGLE("Mono Playback Switch", AK4535_SIG1, 5, 1, 0),
+};
+
+/* Stereo Mixer */
+static const struct snd_kcontrol_new ak4535_stereo_mixer_controls[] = {
+ SOC_DAPM_SINGLE("Mic Sidetone Switch", AK4535_SIG2, 4, 1, 0),
+ SOC_DAPM_SINGLE("Playback Switch", AK4535_SIG2, 7, 1, 0),
+ SOC_DAPM_SINGLE("Aux Bypass Switch", AK4535_SIG2, 5, 1, 0),
+};
+
+/* Input Mixer */
+static const struct snd_kcontrol_new ak4535_input_mixer_controls[] = {
+ SOC_DAPM_SINGLE("Mic Capture Switch", AK4535_MIC, 2, 1, 0),
+ SOC_DAPM_SINGLE("Aux Capture Switch", AK4535_MIC, 5, 1, 0),
+};
+
+/* Input mux */
+static const struct snd_kcontrol_new ak4535_input_mux_control =
+ SOC_DAPM_ENUM("Input Select", ak4535_enum[4]);
+
+/* HP L switch */
+static const struct snd_kcontrol_new ak4535_hpl_control =
+ SOC_DAPM_SINGLE("Switch", AK4535_SIG2, 1, 1, 1);
+
+/* HP R switch */
+static const struct snd_kcontrol_new ak4535_hpr_control =
+ SOC_DAPM_SINGLE("Switch", AK4535_SIG2, 0, 1, 1);
+
+/* mono 2 switch */
+static const struct snd_kcontrol_new ak4535_mono2_control =
+ SOC_DAPM_SINGLE("Switch", AK4535_SIG1, 0, 1, 0);
+
+/* Line out switch */
+static const struct snd_kcontrol_new ak4535_line_control =
+ SOC_DAPM_SINGLE("Switch", AK4535_SIG2, 6, 1, 0);
+
+/* ak4535 dapm widgets */
+static const struct snd_soc_dapm_widget ak4535_dapm_widgets[] = {
+ SND_SOC_DAPM_MIXER("Stereo Mixer", SND_SOC_NOPM, 0, 0,
+ &ak4535_stereo_mixer_controls[0],
+ ARRAY_SIZE(ak4535_stereo_mixer_controls)),
+ SND_SOC_DAPM_MIXER("Mono1 Mixer", SND_SOC_NOPM, 0, 0,
+ &ak4535_mono1_mixer_controls[0],
+ ARRAY_SIZE(ak4535_mono1_mixer_controls)),
+ SND_SOC_DAPM_MIXER("Input Mixer", SND_SOC_NOPM, 0, 0,
+ &ak4535_input_mixer_controls[0],
+ ARRAY_SIZE(ak4535_input_mixer_controls)),
+ SND_SOC_DAPM_MUX("Input Mux", SND_SOC_NOPM, 0, 0,
+ &ak4535_input_mux_control),
+ SND_SOC_DAPM_DAC("DAC", "Playback", AK4535_PM2, 0, 0),
+ SND_SOC_DAPM_SWITCH("Mono 2 Enable", SND_SOC_NOPM, 0, 0,
+ &ak4535_mono2_control),
+ /* speaker powersave bit */
+ SND_SOC_DAPM_PGA("Speaker Enable", AK4535_MODE2, 0, 0, NULL, 0),
+ SND_SOC_DAPM_SWITCH("Line Out Enable", SND_SOC_NOPM, 0, 0,
+ &ak4535_line_control),
+ SND_SOC_DAPM_SWITCH("Left HP Enable", SND_SOC_NOPM, 0, 0,
+ &ak4535_hpl_control),
+ SND_SOC_DAPM_SWITCH("Right HP Enable", SND_SOC_NOPM, 0, 0,
+ &ak4535_hpr_control),
+ SND_SOC_DAPM_OUTPUT("LOUT"),
+ SND_SOC_DAPM_OUTPUT("HPL"),
+ SND_SOC_DAPM_OUTPUT("ROUT"),
+ SND_SOC_DAPM_OUTPUT("HPR"),
+ SND_SOC_DAPM_OUTPUT("SPP"),
+ SND_SOC_DAPM_OUTPUT("SPN"),
+ SND_SOC_DAPM_OUTPUT("MOUT1"),
+ SND_SOC_DAPM_OUTPUT("MOUT2"),
+ SND_SOC_DAPM_OUTPUT("MICOUT"),
+ SND_SOC_DAPM_ADC("ADC", "Capture", AK4535_PM1, 0, 0),
+ SND_SOC_DAPM_PGA("Spk Amp", AK4535_PM2, 3, 0, NULL, 0),
+ SND_SOC_DAPM_PGA("HP R Amp", AK4535_PM2, 1, 0, NULL, 0),
+ SND_SOC_DAPM_PGA("HP L Amp", AK4535_PM2, 2, 0, NULL, 0),
+ SND_SOC_DAPM_PGA("Mic", AK4535_PM1, 1, 0, NULL, 0),
+ SND_SOC_DAPM_PGA("Line Out", AK4535_PM1, 4, 0, NULL, 0),
+ SND_SOC_DAPM_PGA("Mono Out", AK4535_PM1, 3, 0, NULL, 0),
+ SND_SOC_DAPM_PGA("AUX In", AK4535_PM1, 2, 0, NULL, 0),
+
+ SND_SOC_DAPM_MICBIAS("Mic Int Bias", AK4535_MIC, 3, 0),
+ SND_SOC_DAPM_MICBIAS("Mic Ext Bias", AK4535_MIC, 4, 0),
+ SND_SOC_DAPM_INPUT("MICIN"),
+ SND_SOC_DAPM_INPUT("MICEXT"),
+ SND_SOC_DAPM_INPUT("AUX"),
+ SND_SOC_DAPM_INPUT("MIN"),
+ SND_SOC_DAPM_INPUT("AIN"),
+};
+
+static const struct snd_soc_dapm_route ak4535_audio_map[] = {
+ /*stereo mixer */
+ {"Stereo Mixer", "Playback Switch", "DAC"},
+ {"Stereo Mixer", "Mic Sidetone Switch", "Mic"},
+ {"Stereo Mixer", "Aux Bypass Switch", "AUX In"},
+
+ /* mono1 mixer */
+ {"Mono1 Mixer", "Mic Sidetone Switch", "Mic"},
+ {"Mono1 Mixer", "Mono Playback Switch", "DAC"},
+
+ /* Mic */
+ {"Mic", NULL, "AIN"},
+ {"Input Mux", "Internal", "Mic Int Bias"},
+ {"Input Mux", "External", "Mic Ext Bias"},
+ {"Mic Int Bias", NULL, "MICIN"},
+ {"Mic Ext Bias", NULL, "MICEXT"},
+ {"MICOUT", NULL, "Input Mux"},
+
+ /* line out */
+ {"LOUT", NULL, "Line Out Enable"},
+ {"ROUT", NULL, "Line Out Enable"},
+ {"Line Out Enable", "Switch", "Line Out"},
+ {"Line Out", NULL, "Stereo Mixer"},
+
+ /* mono1 out */
+ {"MOUT1", NULL, "Mono Out"},
+ {"Mono Out", NULL, "Mono1 Mixer"},
+
+ /* left HP */
+ {"HPL", NULL, "Left HP Enable"},
+ {"Left HP Enable", "Switch", "HP L Amp"},
+ {"HP L Amp", NULL, "Stereo Mixer"},
+
+ /* right HP */
+ {"HPR", NULL, "Right HP Enable"},
+ {"Right HP Enable", "Switch", "HP R Amp"},
+ {"HP R Amp", NULL, "Stereo Mixer"},
+
+ /* speaker */
+ {"SPP", NULL, "Speaker Enable"},
+ {"SPN", NULL, "Speaker Enable"},
+ {"Speaker Enable", "Switch", "Spk Amp"},
+ {"Spk Amp", NULL, "MIN"},
+
+ /* mono 2 */
+ {"MOUT2", NULL, "Mono 2 Enable"},
+ {"Mono 2 Enable", "Switch", "Stereo Mixer"},
+
+ /* Aux In */
+ {"Aux In", NULL, "AUX"},
+
+ /* ADC */
+ {"ADC", NULL, "Input Mixer"},
+ {"Input Mixer", "Mic Capture Switch", "Mic"},
+ {"Input Mixer", "Aux Capture Switch", "Aux In"},
+};
+
+static int ak4535_set_dai_sysclk(struct snd_soc_dai *codec_dai,
+ int clk_id, unsigned int freq, int dir)
+{
+ struct snd_soc_codec *codec = codec_dai->codec;
+ struct ak4535_priv *ak4535 = snd_soc_codec_get_drvdata(codec);
+
+ ak4535->sysclk = freq;
+ return 0;
+}
+
+static int ak4535_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 ak4535_priv *ak4535 = snd_soc_codec_get_drvdata(codec);
+ u8 mode2 = snd_soc_read(codec, AK4535_MODE2) & ~(0x3 << 5);
+ int rate = params_rate(params), fs = 256;
+
+ if (rate)
+ fs = ak4535->sysclk / rate;
+
+ /* set fs */
+ switch (fs) {
+ case 1024:
+ mode2 |= (0x2 << 5);
+ break;
+ case 512:
+ mode2 |= (0x1 << 5);
+ break;
+ case 256:
+ break;
+ }
+
+ /* set rate */
+ snd_soc_write(codec, AK4535_MODE2, mode2);
+ return 0;
+}
+
+static int ak4535_set_dai_fmt(struct snd_soc_dai *codec_dai,
+ unsigned int fmt)
+{
+ struct snd_soc_codec *codec = codec_dai->codec;
+ u8 mode1 = 0;
+
+ /* interface format */
+ switch (fmt & SND_SOC_DAIFMT_FORMAT_MASK) {
+ case SND_SOC_DAIFMT_I2S:
+ mode1 = 0x0002;
+ break;
+ case SND_SOC_DAIFMT_LEFT_J:
+ mode1 = 0x0001;
+ break;
+ default:
+ return -EINVAL;
+ }
+
+ /* use 32 fs for BCLK to save power */
+ mode1 |= 0x4;
+
+ snd_soc_write(codec, AK4535_MODE1, mode1);
+ return 0;
+}
+
+static int ak4535_mute(struct snd_soc_dai *dai, int mute)
+{
+ struct snd_soc_codec *codec = dai->codec;
+ u16 mute_reg = snd_soc_read(codec, AK4535_DAC);
+ if (!mute)
+ snd_soc_write(codec, AK4535_DAC, mute_reg & ~0x20);
+ else
+ snd_soc_write(codec, AK4535_DAC, mute_reg | 0x20);
+ return 0;
+}
+
+static int ak4535_set_bias_level(struct snd_soc_codec *codec,
+ enum snd_soc_bias_level level)
+{
+ switch (level) {
+ case SND_SOC_BIAS_ON:
+ snd_soc_update_bits(codec, AK4535_DAC, 0x20, 0);
+ break;
+ case SND_SOC_BIAS_PREPARE:
+ snd_soc_update_bits(codec, AK4535_DAC, 0x20, 0x20);
+ break;
+ case SND_SOC_BIAS_STANDBY:
+ snd_soc_update_bits(codec, AK4535_PM1, 0x80, 0x80);
+ snd_soc_update_bits(codec, AK4535_PM2, 0x80, 0);
+ break;
+ case SND_SOC_BIAS_OFF:
+ snd_soc_update_bits(codec, AK4535_PM1, 0x80, 0);
+ break;
+ }
+ codec->dapm.bias_level = level;
+ return 0;
+}
+
+#define AK4535_RATES (SNDRV_PCM_RATE_8000 | SNDRV_PCM_RATE_11025 |\
+ SNDRV_PCM_RATE_16000 | SNDRV_PCM_RATE_22050 |\
+ SNDRV_PCM_RATE_44100 | SNDRV_PCM_RATE_48000)
+
+static const struct snd_soc_dai_ops ak4535_dai_ops = {
+ .hw_params = ak4535_hw_params,
+ .set_fmt = ak4535_set_dai_fmt,
+ .digital_mute = ak4535_mute,
+ .set_sysclk = ak4535_set_dai_sysclk,
+};
+
+static struct snd_soc_dai_driver ak4535_dai = {
+ .name = "ak4535-hifi",
+ .playback = {
+ .stream_name = "Playback",
+ .channels_min = 1,
+ .channels_max = 2,
+ .rates = AK4535_RATES,
+ .formats = SNDRV_PCM_FMTBIT_S16_LE,},
+ .capture = {
+ .stream_name = "Capture",
+ .channels_min = 1,
+ .channels_max = 2,
+ .rates = AK4535_RATES,
+ .formats = SNDRV_PCM_FMTBIT_S16_LE,},
+ .ops = &ak4535_dai_ops,
+};
+
+static int ak4535_resume(struct snd_soc_codec *codec)
+{
+ snd_soc_cache_sync(codec);
+ return 0;
+}
+
+static const struct regmap_config ak4535_regmap = {
+ .reg_bits = 8,
+ .val_bits = 8,
+
+ .max_register = AK4535_STATUS,
+ .volatile_reg = ak4535_volatile,
+
+ .cache_type = REGCACHE_RBTREE,
+ .reg_defaults = ak4535_reg_defaults,
+ .num_reg_defaults = ARRAY_SIZE(ak4535_reg_defaults),
+};
+
+static struct snd_soc_codec_driver soc_codec_dev_ak4535 = {
+ .resume = ak4535_resume,
+ .set_bias_level = ak4535_set_bias_level,
+ .suspend_bias_off = true,
+
+ .controls = ak4535_snd_controls,
+ .num_controls = ARRAY_SIZE(ak4535_snd_controls),
+ .dapm_widgets = ak4535_dapm_widgets,
+ .num_dapm_widgets = ARRAY_SIZE(ak4535_dapm_widgets),
+ .dapm_routes = ak4535_audio_map,
+ .num_dapm_routes = ARRAY_SIZE(ak4535_audio_map),
+};
+
+static int ak4535_i2c_probe(struct i2c_client *i2c,
+ const struct i2c_device_id *id)
+{
+ struct ak4535_priv *ak4535;
+ int ret;
+
+ ak4535 = devm_kzalloc(&i2c->dev, sizeof(struct ak4535_priv),
+ GFP_KERNEL);
+ if (ak4535 == NULL)
+ return -ENOMEM;
+
+ ak4535->regmap = devm_regmap_init_i2c(i2c, &ak4535_regmap);
+ if (IS_ERR(ak4535->regmap)) {
+ ret = PTR_ERR(ak4535->regmap);
+ dev_err(&i2c->dev, "Failed to init regmap: %d\n", ret);
+ return ret;
+ }
+
+ i2c_set_clientdata(i2c, ak4535);
+
+ ret = snd_soc_register_codec(&i2c->dev,
+ &soc_codec_dev_ak4535, &ak4535_dai, 1);
+
+ return ret;
+}
+
+static int ak4535_i2c_remove(struct i2c_client *client)
+{
+ snd_soc_unregister_codec(&client->dev);
+ return 0;
+}
+
+static const struct i2c_device_id ak4535_i2c_id[] = {
+ { "ak4535", 0 },
+ { }
+};
+MODULE_DEVICE_TABLE(i2c, ak4535_i2c_id);
+
+static struct i2c_driver ak4535_i2c_driver = {
+ .driver = {
+ .name = "ak4535",
+ .owner = THIS_MODULE,
+ },
+ .probe = ak4535_i2c_probe,
+ .remove = ak4535_i2c_remove,
+ .id_table = ak4535_i2c_id,
+};
+
+module_i2c_driver(ak4535_i2c_driver);
+
+MODULE_DESCRIPTION("Soc AK4535 driver");
+MODULE_AUTHOR("Richard Purdie");
+MODULE_LICENSE("GPL");
Code Review / kvmfornfv.git / blobdiff