This is very simple driver for ALSAIt supprt headphone output and stereo input onlyThis patch is tested by ms7724se
Signed-off-by: Kuninori Morimoto <morimoto.kuninori@xxxxxxxxxxx>---v1 -> v2
o based on wm8731.co add explain for register setting
sound/soc/codecs/Kconfig | 4 + sound/soc/codecs/Makefile | 2 + sound/soc/codecs/ak4642.c | 516 +++++++++++++++++++++++++++++++++++++++++++++ sound/soc/codecs/ak4642.h | 25 +++ 4 files changed, 547 insertions(+), 0 deletions(-) create mode 100644 sound/soc/codecs/ak4642.c create mode 100644 sound/soc/codecs/ak4642.h
diff --git a/sound/soc/codecs/Kconfig b/sound/soc/codecs/Kconfigindex bbc97fd..ee794f1 100644--- a/sound/soc/codecs/Kconfig+++ b/sound/soc/codecs/Kconfig@@ -16,6 +16,7 @@ config SND_SOC_ALL_CODECS select SND_SOC_AD73311 if I2C select SND_SOC_AK4104 if SPI_MASTER select SND_SOC_AK4535 if I2C+ select SND_SOC_AK4642 if I2C select SND_SOC_CS4270 if I2C select SND_SOC_PCM3008 select SND_SOC_SPDIF@@ -74,6 +75,9 @@ config SND_SOC_AK4104 config SND_SOC_AK4535 tristate +config SND_SOC_AK4642+ tristate+ # Cirrus Logic CS4270 Codec config SND_SOC_CS4270 tristatediff --git a/sound/soc/codecs/Makefile b/sound/soc/codecs/Makefileindex 8b75305..c8c567e 100644--- a/sound/soc/codecs/Makefile+++ b/sound/soc/codecs/Makefile@@ -3,6 +3,7 @@ snd-soc-ad1980-objs := ad1980.o snd-soc-ad73311-objs := ad73311.o snd-soc-ak4104-objs := ak4104.o snd-soc-ak4535-objs := ak4535.o+snd-soc-ak4642-objs := ak4642.o snd-soc-cs4270-objs := cs4270.o snd-soc-l3-objs := l3.o snd-soc-pcm3008-objs := pcm3008.o@@ -40,6 +41,7 @@ obj-$(CONFIG_SND_SOC_AD1980) += snd-soc-ad1980.o obj-$(CONFIG_SND_SOC_AD73311) += snd-soc-ad73311.o obj-$(CONFIG_SND_SOC_AK4104) += snd-soc-ak4104.o obj-$(CONFIG_SND_SOC_AK4535) += snd-soc-ak4535.o+obj-$(CONFIG_SND_SOC_AK4642) += snd-soc-ak4642.o obj-$(CONFIG_SND_SOC_CS4270) += snd-soc-cs4270.o obj-$(CONFIG_SND_SOC_L3) += snd-soc-l3.o obj-$(CONFIG_SND_SOC_PCM3008) += snd-soc-pcm3008.odiff --git a/sound/soc/codecs/ak4642.c b/sound/soc/codecs/ak4642.cnew file mode 100644index 0000000..1b439b4--- /dev/null+++ b/sound/soc/codecs/ak4642.c@@ -0,0 +1,516 @@+/*+ * ak4642.c -- AK4642/AK4643 ALSA Soc Audio driver+ *+ * Copyright (C) 2009 Renesas Solutions Corp.+ * Kuninori Morimoto <morimoto.kuninori@xxxxxxxxxxx>+ *+ * Based on wm8731.c by Richard Purdie+ * Based on ak4535.c by Richard Purdie+ * 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.+ */++/* ** CAUTION **+ *+ * This is very simple driver.+ * It can use headphone output / stereo input only+ *+ * AK4642 is not tested.+ * AK4643 is tested.+ */++#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/platform_device.h>+#include <sound/core.h>+#include <sound/pcm.h>+#include <sound/pcm_params.h>+#include <sound/soc.h>+#include <sound/soc-dapm.h>+#include <sound/initval.h>++#include "ak4642.h"++#define AK4642_VERSION "0.0.1"++#define PW_MGMT1 0x00+#define PW_MGMT2 0x01+#define SG_SL1 0x02+#define SG_SL2 0x03+#define MD_CTL1 0x04+#define MD_CTL2 0x05+#define TIMER 0x06+#define ALC_CTL1 0x07+#define ALC_CTL2 0x08+#define L_IVC 0x09+#define L_DVC 0x0a+#define ALC_CTL3 0x0b+#define R_IVC 0x0c+#define R_DVC 0x0d+#define MD_CTL3 0x0e+#define MD_CTL4 0x0f+#define PW_MGMT3 0x10+#define DF_S 0x11+#define FIL3_0 0x12+#define FIL3_1 0x13+#define FIL3_2 0x14+#define FIL3_3 0x15+#define EQ_0 0x16+#define EQ_1 0x17+#define EQ_2 0x18+#define EQ_3 0x19+#define EQ_4 0x1a+#define EQ_5 0x1b+#define FIL1_0 0x1c+#define FIL1_1 0x1d+#define FIL1_2 0x1e+#define FIL1_3 0x1f+#define PW_MGMT4 0x20+#define MD_CTL5 0x21+#define LO_MS 0x22+#define HP_MS 0x23+#define SPK_MS 0x24++#define AK4642_CACHEREGNUM 0x25++struct snd_soc_codec_device soc_codec_dev_ak4642;++/* codec private data */+struct ak4642_priv {+ struct snd_soc_codec codec;+ unsigned int sysclk;+};++static struct snd_soc_codec *ak4642_codec;++/*+ * ak4642 register cache+ */+static const u16 ak4642_reg[AK4642_CACHEREGNUM] = {+ 0x0000, 0x0000, 0x0001, 0x0000,+ 0x0002, 0x0000, 0x0000, 0x0000,+ 0x00e1, 0x00e1, 0x0018, 0x0000,+ 0x00e1, 0x0018, 0x0011, 0x0008,+ 0x0000, 0x0000, 0x0000, 0x0000,+ 0x0000, 0x0000, 0x0000, 0x0000,+ 0x0000, 0x0000, 0x0000, 0x0000,+ 0x0000, 0x0000, 0x0000, 0x0000,+ 0x0000, 0x0000, 0x0000, 0x0000,+ 0x0000,+};++/*+ * read ak4642 register cache+ */+static inline unsigned int ak4642_read_reg_cache(struct snd_soc_codec *codec,+ unsigned int reg)+{+ u16 *cache = codec->reg_cache;+ if (reg >= AK4642_CACHEREGNUM)+ return -1;+ return cache[reg];+}++static inline unsigned int ak4642_read(struct snd_soc_codec *codec,+ unsigned int reg)+{+ u8 data;+ data = reg;++ if (codec->hw_write(codec->control_data, &data, 1) != 1)+ return -EIO;++ if (codec->hw_read(codec->control_data, &data, 1) != 1)+ return -EIO;++ return data;+};++/*+ * write ak4642 register cache+ */+static inline void ak4642_write_reg_cache(struct snd_soc_codec *codec,+ u16 reg, unsigned int value)+{+ u16 *cache = codec->reg_cache;+ if (reg >= AK4642_CACHEREGNUM)+ return;++ cache[reg] = value;+}++/*+ * write to the AK4642 register space+ */+static int ak4642_write(struct snd_soc_codec *codec, unsigned int reg,+ unsigned int value)+{+ u8 data[2];++ /* data is+ * D15..D8 AK4642 register offset+ * D7...D0 register data+ */+ data[0] = reg & 0xff;+ data[1] = value & 0xff;++ if (codec->hw_write(codec->control_data, data, 2) == 2) {+ ak4642_write_reg_cache(codec, reg, value);+ return 0;+ } else+ return -EIO;+}++static int ak4642_sync(struct snd_soc_codec *codec)+{+ u16 *cache = codec->reg_cache;+ int i, r = 0;++ for (i = 0; i < AK4642_CACHEREGNUM; i++)+ r |= ak4642_write(codec, i, cache[i]);++ return r;+};++static int ak4642_dai_startup(struct snd_pcm_substream *substream,+ struct snd_soc_dai *dai)+{+ int is_play = substream->stream == SNDRV_PCM_STREAM_PLAYBACK;+ struct snd_soc_codec *codec = dai->codec;++ if (is_play) {+ /*+ * start headphone output+ *+ * PLL, Master Mode+ * Audio I/F Format :MSB justified (ADC & DAC)+ * Sampling Frequency: 44.1kHz+ * Digital Volume: −8dB+ * Bass Boost Level : Middle+ *+ * This operation came from example code of+ * "ASAHI KASEI AK4642" (japanese) manual p97.+ *+ * Example code use 0x39, 0x79 value for 0x01 address,+ * But we need MCKO (0x02) bit now+ */+ ak4642_write(codec, 0x05, 0x27);+ ak4642_write(codec, 0x0f, 0x09);+ ak4642_write(codec, 0x0e, 0x19);+ ak4642_write(codec, 0x09, 0x91);+ ak4642_write(codec, 0x0c, 0x91);+ ak4642_write(codec, 0x0a, 0x28);+ ak4642_write(codec, 0x0d, 0x28);+ ak4642_write(codec, 0x00, 0x64);+ ak4642_write(codec, 0x01, 0x3b); /* + MCKO bit */+ ak4642_write(codec, 0x01, 0x7b); /* + MCKO bit */+ } else {+ /*+ * start stereo input+ *+ * PLL Master Mode+ * Audio I/F Format:MSB justified (ADC & DAC)+ * Sampling Frequency:44.1kHz+ * Pre MIC AMP:+20dB+ * MIC Power On+ * ALC setting:Refer to Table 35+ * ALC bit=“1”+ *+ * This operation came from example code of+ * "ASAHI KASEI AK4642" (japanese) manual p94.+ */+ ak4642_write(codec, 0x05, 0x27);+ ak4642_write(codec, 0x02, 0x05);+ ak4642_write(codec, 0x06, 0x3c);+ ak4642_write(codec, 0x08, 0xe1);+ ak4642_write(codec, 0x0b, 0x00);+ ak4642_write(codec, 0x07, 0x21);+ ak4642_write(codec, 0x00, 0x41);+ ak4642_write(codec, 0x10, 0x01);+ }++ return 0;+}++static void ak4642_dai_shutdown(struct snd_pcm_substream *substream,+ struct snd_soc_dai *dai)+{+ int is_play = substream->stream == SNDRV_PCM_STREAM_PLAYBACK;+ struct snd_soc_codec *codec = dai->codec;++ if (is_play) {+ /* stop headphone output */+ ak4642_write(codec, 0x01, 0x3b);+ ak4642_write(codec, 0x01, 0x0b);+ ak4642_write(codec, 0x00, 0x40);+ ak4642_write(codec, 0x0e, 0x11);+ ak4642_write(codec, 0x0f, 0x08);+ } else {+ /* stop stereo input */+ ak4642_write(codec, 0x00, 0x40);+ ak4642_write(codec, 0x10, 0x00);+ ak4642_write(codec, 0x07, 0x01);+ }+}++static int ak4642_dai_set_sysclk(struct snd_soc_dai *codec_dai,+ int clk_id, unsigned int freq, int dir)+{+ struct snd_soc_codec *codec = codec_dai->codec;+ struct ak4642_priv *ak4642 = codec->private_data;++ ak4642->sysclk = freq;+ return 0;+}++static struct snd_soc_dai_ops ak4642_dai_ops = {+ .startup = ak4642_dai_startup,+ .shutdown = ak4642_dai_shutdown,+ .set_sysclk = ak4642_dai_set_sysclk,+};++struct snd_soc_dai ak4642_dai = {+ .name = "AK4642",+ .playback = {+ .stream_name = "Playback",+ .channels_min = 1,+ .channels_max = 2,+ .rates = SNDRV_PCM_RATE_8000_48000,+ .formats = SNDRV_PCM_FMTBIT_S16_LE },+ .capture = {+ .stream_name = "Capture",+ .channels_min = 1,+ .channels_max = 2,+ .rates = SNDRV_PCM_RATE_8000_48000,+ .formats = SNDRV_PCM_FMTBIT_S16_LE },+ .ops = &ak4642_dai_ops,+};+EXPORT_SYMBOL_GPL(ak4642_dai);++static int ak4642_resume(struct platform_device *pdev)+{+ struct snd_soc_device *socdev = platform_get_drvdata(pdev);+ struct snd_soc_codec *codec = socdev->card->codec;++ ak4642_sync(codec);+ return 0;+}++/*+ * initialise the AK4642 driver+ * register the mixer and dsp interfaces with the kernel+ */+static int ak4642_init(struct ak4642_priv *ak4642)+{+ struct snd_soc_codec *codec = &ak4642->codec;+ int ret = 0;++ if (ak4642_codec) {+ dev_err(codec->dev, "Another ak4642 is registered\n");+ return -EINVAL;+ }++ mutex_init(&codec->mutex);+ INIT_LIST_HEAD(&codec->dapm_widgets);+ INIT_LIST_HEAD(&codec->dapm_paths);++ codec->private_data = ak4642;+ codec->name = "AK4642";+ codec->owner = THIS_MODULE;+ codec->read = ak4642_read_reg_cache;+ codec->write = ak4642_write;+ codec->dai = &ak4642_dai;+ codec->num_dai = 1;+ codec->hw_write = (hw_write_t)i2c_master_send;+ codec->hw_read = (hw_read_t)i2c_master_recv;+ codec->reg_cache_size = ARRAY_SIZE(ak4642_reg);+ codec->reg_cache = kmemdup(ak4642_reg,+ sizeof(ak4642_reg), GFP_KERNEL);++ if (!codec->reg_cache)+ return -ENOMEM;++ ak4642_dai.dev = codec->dev;+ ak4642_codec = codec;++ ret = snd_soc_register_codec(codec);+ if (ret) {+ dev_err(codec->dev, "Failed to register codec: %d\n", ret);+ goto reg_cache_err;+ }++ ret = snd_soc_register_dai(&ak4642_dai);+ if (ret) {+ dev_err(codec->dev, "Failed to register DAI: %d\n", ret);+ snd_soc_unregister_codec(codec);+ goto reg_cache_err;+ }++ /*+ * clock setting+ *+ * Audio I/F Format: MSB justified (ADC & DAC)+ * BICK frequency at Master Mode: 64fs+ * Input Master Clock Select at PLL Mode: 11.2896MHz+ * MCKO: Enable+ * Sampling Frequency: 44.1kHz+ *+ * This operation came from example code of+ * "ASAHI KASEI AK4642" (japanese) manual p89.+ *+ * please fix-me+ */+ ak4642_write(codec, 0x01, 0x08);+ ak4642_write(codec, 0x04, 0x4a);+ ak4642_write(codec, 0x05, 0x27);+ ak4642_write(codec, 0x00, 0x40);+ ak4642_write(codec, 0x01, 0x0b);++ return ret;++reg_cache_err:+ kfree(codec->reg_cache);++ return ret;+}++#if defined(CONFIG_I2C) || defined(CONFIG_I2C_MODULE)+static int ak4642_i2c_probe(struct i2c_client *i2c,+ const struct i2c_device_id *id)+{+ struct ak4642_priv *ak4642;+ struct snd_soc_codec *codec;+ int ret;++ ak4642 = kzalloc(sizeof(struct ak4642_priv), GFP_KERNEL);+ if (!ak4642)+ return -ENOMEM;++ codec = &ak4642->codec;+ codec->dev = &i2c->dev;++ i2c_set_clientdata(i2c, ak4642);+ codec->control_data = i2c;++ ret = ak4642_init(ak4642);+ if (ret < 0)+ printk(KERN_ERR "failed to initialise AK4642\n");++ return ret;+}++static int ak4642_i2c_remove(struct i2c_client *client)+{+ struct ak4642_priv *ak4642 = i2c_get_clientdata(client);++ snd_soc_unregister_dai(&ak4642_dai);+ snd_soc_unregister_codec(&ak4642->codec);+ kfree(ak4642->codec.reg_cache);+ kfree(ak4642);+ ak4642_codec = NULL;++ return 0;+}++static const struct i2c_device_id ak4642_i2c_id[] = {+ { "ak4642", 0 },+ { }+};+MODULE_DEVICE_TABLE(i2c, ak4642_i2c_id);++static struct i2c_driver ak4642_i2c_driver = {+ .driver = {+ .name = "AK4642 I2C Codec",+ .owner = THIS_MODULE,+ },+ .probe = ak4642_i2c_probe,+ .remove = ak4642_i2c_remove,+ .id_table = ak4642_i2c_id,+};++#endif++static int ak4642_probe(struct platform_device *pdev)+{+ struct snd_soc_device *socdev = platform_get_drvdata(pdev);+ int ret;++ if (!ak4642_codec) {+ dev_err(&pdev->dev, "Codec device not registered\n");+ return -ENODEV;+ }++ socdev->card->codec = ak4642_codec;++ /* register pcms */+ ret = snd_soc_new_pcms(socdev, SNDRV_DEFAULT_IDX1, SNDRV_DEFAULT_STR1);+ if (ret < 0) {+ printk(KERN_ERR "ak4642: failed to create pcms\n");+ goto pcm_err;+ }++ ret = snd_soc_init_card(socdev);+ if (ret < 0) {+ printk(KERN_ERR "ak4642: failed to register card\n");+ goto card_err;+ }++ dev_info(&pdev->dev, "AK4642 Audio Codec %s", AK4642_VERSION);+ return ret;++card_err:+ snd_soc_free_pcms(socdev);+ snd_soc_dapm_free(socdev);+pcm_err:+ return ret;++}++/* power down chip */+static int ak4642_remove(struct platform_device *pdev)+{+ struct snd_soc_device *socdev = platform_get_drvdata(pdev);++ snd_soc_free_pcms(socdev);+ snd_soc_dapm_free(socdev);++ return 0;+}++struct snd_soc_codec_device soc_codec_dev_ak4642 = {+ .probe = ak4642_probe,+ .remove = ak4642_remove,+ .resume = ak4642_resume,+};+EXPORT_SYMBOL_GPL(soc_codec_dev_ak4642);++static int __init ak4642_modinit(void)+{+ int ret;+#if defined(CONFIG_I2C) || defined(CONFIG_I2C_MODULE)+ ret = i2c_add_driver(&ak4642_i2c_driver);+#endif+ return ret;++}+module_init(ak4642_modinit);++static void __exit ak4642_exit(void)+{+#if defined(CONFIG_I2C) || defined(CONFIG_I2C_MODULE)+ i2c_del_driver(&ak4642_i2c_driver);+#endif++}+module_exit(ak4642_exit);++MODULE_DESCRIPTION("Soc AK4642 driver");+MODULE_AUTHOR("Kuninori Morimoto <morimoto.kuninori@xxxxxxxxxxx>");+MODULE_LICENSE("GPL");diff --git a/sound/soc/codecs/ak4642.h b/sound/soc/codecs/ak4642.hnew file mode 100644index 0000000..aa58c14--- /dev/null+++ b/sound/soc/codecs/ak4642.h@@ -0,0 +1,25 @@+/*+ * ak464x.h -- AK464x Soc Audio driver+ *+ * Copyright (C) 2009 Renesas Solutions Corp.+ * Kuninori Morimoto <morimoto.kuninori@xxxxxxxxxxx>+ *+ * Based of ak4535.c+ *+ * This program is free software; you can redistribute it and/or modify+ * it under the terms of the GNU General Public License version 2 as+ * published by the Free Software Foundation.+ */++#ifndef _AK4642_H+#define _AK4642_H++struct ak4642_setup_data {+ int i2c_bus;+ unsigned short i2c_address;+};++extern struct snd_soc_dai ak4642_dai;+extern struct snd_soc_codec_device soc_codec_dev_ak4642;++#endif-- 1.6.0.4
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