This patch is adding a ASoC driver for the cs42l51 from Cirrus Logic.
Master mode and spi mode are not supported.
Signed-off-by: Arnaud Patard <apatard@xxxxxxxxxxxx>
---
sound/soc/codecs/Kconfig | 4 4 + 0 - 0 !
sound/soc/codecs/Makefile | 2 2 + 0 - 0 !
sound/soc/codecs/cs42l51.c | 682 682 + 0 - 0 !
sound/soc/codecs/cs42l51.h | 167 167 + 0 - 0 !
4 files changed, 855 insertions(+)
Index: linux-2.6.33/sound/soc/codecs/cs42l51.c
===================================================================
--- /dev/null 1970-01-01 00:00:00.000000000 +0000
+++ linux-2.6.33/sound/soc/codecs/cs42l51.c 2010-05-11 18:03:07.717711495 +0200
@@ -0,0 +1,682 @@
+/*
+ * cs42l51.c
+ *
+ * ASoC Driver for Cirrus Logic CS42L51 codecs
+ *
+ * Copyright (c) 2010 Arnaud Patard <apatard@xxxxxxxxxxxx>
+ *
+ * Based on cs4270.c - Copyright (c) Timur Tabi <timur@xxxxxxxxxxxxx>
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ *
+ * For now:
+ * - Only I2C is support. Not SPI
+ * - master mode *NOT* supported
+ */
+
+#include <linux/module.h>
+#include <linux/platform_device.h>
+#include <linux/slab.h>
+#include <sound/core.h>
+#include <sound/soc.h>
+#include <sound/tlv.h>
+#include <sound/initval.h>
+#include <sound/pcm_params.h>
+#include <sound/pcm.h>
+#include <linux/i2c.h>
+
+#include "cs42l51.h"
+
+enum funct_mode {
+ MODE_SLAVE,
+ MODE_SLAVE_AUTO,
+ MODE_MASTER,
+};
+
+struct cs42l51_private {
+ unsigned int mclk;
+ unsigned int audio_mode; /* The mode (I2S or left-justified) */
+ enum funct_mode func; /* See funct_mode */
+ struct snd_soc_codec codec;
+ u16 reg_cache[CS42L51_NUMREGS];
+};
+
+static struct snd_soc_codec *cs42l51_codec;
+
+#define CS42L51_FORMATS ( \
+ SNDRV_PCM_FMTBIT_S16_LE | SNDRV_PCM_FMTBIT_S16_BE | \
+ SNDRV_PCM_FMTBIT_S18_3LE | SNDRV_PCM_FMTBIT_S18_3BE | \
+ SNDRV_PCM_FMTBIT_S20_3LE | SNDRV_PCM_FMTBIT_S20_3BE | \
+ SNDRV_PCM_FMTBIT_S24_LE | SNDRV_PCM_FMTBIT_S24_BE)
+
+static int cs42l51_fill_cache(struct snd_soc_codec *codec)
+{
+ u8 *cache = codec->reg_cache;
+ struct i2c_client *i2c_client = codec->control_data;
+ s32 length;
+
+ length = i2c_smbus_read_i2c_block_data(i2c_client,
+ CS42L51_FIRSTREG | 0x80, CS42L51_NUMREGS, cache);
+ if (length != CS42L51_NUMREGS) {
+ dev_err(&i2c_client->dev,
+ "I2C read failure, addr=0x%x (ret=%d vs %d)\n",
+ i2c_client->addr, length, CS42L51_NUMREGS);
+ return -EIO;
+ }
+
+ return 0;
+}
+
+static unsigned int cs42l51_read_reg_cache(struct snd_soc_codec *codec,
+ unsigned int reg)
+{
+ u8 *cache = codec->reg_cache;
+
+ if ((reg < CS42L51_FIRSTREG) || (reg > CS42L51_LASTREG))
+ return -EIO;
+
+ return cache[reg - CS42L51_FIRSTREG];
+}
+
+static int cs42l51_i2c_write(struct snd_soc_codec *codec, unsigned int reg,
+ unsigned int value)
+{
+ u8 *cache = codec->reg_cache;
+ struct i2c_client *client = codec->control_data;
+
+ if ((reg < CS42L51_FIRSTREG) || (reg > CS42L51_LASTREG))
+ return -EIO;
+
+ /* Only perform an I2C operation if the new value is different */
+ if (cache[reg - CS42L51_FIRSTREG] != value) {
+ if (i2c_smbus_write_byte_data(client, reg, value)) {
+ dev_err(&client->dev, "I2C write failed\n");
+ return -EIO;
+ }
+ cache[reg - CS42L51_FIRSTREG] = value;
+ }
+
+ return 0;
+}
+
+
+static int cs42l51_i2c_probe(struct i2c_client *i2c_client,
+ const struct i2c_device_id *id)
+{
+ struct snd_soc_codec *codec;
+ struct cs42l51_private *cs42l51;
+ int ret = 0;
+ int reg;
+
+ if (cs42l51_codec)
+ return -EBUSY;
+
+ /* Verify that we have a CS42L51 */
+ ret = i2c_smbus_read_byte_data(i2c_client, CHIP_REV_ID);
+ if (ret < 0) {
+ dev_err(&i2c_client->dev, "failed to read I2C\n");
+ goto error;
+ }
+
+ if (ret != MK_CHIP_REV(CHIP_ID, CHIP_REV)) {
+ dev_err(&i2c_client->dev, "Invalid chip id\n");
+ ret = -ENODEV;
+ goto error;
+ }
+
+ dev_info(&i2c_client->dev, "found device at I2C address %X\n",
+ i2c_client->addr);
+
+ cs42l51 = kzalloc(sizeof(struct cs42l51_private), GFP_KERNEL);
+ if (!cs42l51) {
+ dev_err(&i2c_client->dev, "could not allocate codec\n");
+ return -ENOMEM;
+ }
+ codec = &cs42l51->codec;
+
+ mutex_init(&codec->mutex);
+ INIT_LIST_HEAD(&codec->dapm_widgets);
+ INIT_LIST_HEAD(&codec->dapm_paths);
+
+ codec->dev = &i2c_client->dev;
+ codec->name = "CS42L51";
+ codec->owner = THIS_MODULE;
+ codec->dai = &cs42l51_dai;
+ codec->num_dai = 1;
+ codec->private_data = cs42l51;
+
+ codec->control_data = i2c_client;
+ codec->read = cs42l51_read_reg_cache;
+ codec->write = cs42l51_i2c_write;
+ codec->reg_cache = cs42l51->reg_cache;
+ codec->reg_cache_size = CS42L51_NUMREGS;
+
+ ret = cs42l51_fill_cache(codec);
+ if (ret < 0) {
+ dev_err(&i2c_client->dev, "failed to fill register cache\n");
+ goto error;
+ }
+
+ i2c_set_clientdata(i2c_client, codec);
+
+ /*
+ * DAC configuration (right place to do that ?)
+ * - Use signal processor
+ * - auto mute
+ * - vol changes immediate
+ * - no de-emphasize
+ */
+ reg = DAC_CTL_DATA_SEL(1) | DAC_CTL_AMUTE | DAC_CTL_DACSZ(0);
+ ret = cs42l51_i2c_write(codec, DAC_CTL, reg);
+ if (ret < 0)
+ goto error;
+
+ /* Unmute PCM-A & PCM-B and set default vol to */
+ ret = cs42l51_i2c_write(codec, PCMA_VOL, 0x60);
+ if (ret < 0)
+ goto error;
+
+ ret = cs42l51_i2c_write(codec, PCMB_VOL, 0x60);
+ if (ret < 0)
+ goto error;
+
+ /* default for AOUTx */
+ ret = cs42l51_i2c_write(codec, AOUTA_VOL, 0x05);
+ if (ret < 0)
+ goto error;
+
+ ret = cs42l51_i2c_write(codec, AOUTB_VOL, 0x05);
+ if (ret < 0)
+ goto error;
+
+ /* route microphone */
+ ret = cs42l51_i2c_write(codec, ADC_INPUT, 0xF0);
+ if (ret < 0)
+ goto error;
+
+ cs42l51_dai.dev = codec->dev;
+ cs42l51_codec = codec;
+
+ ret = snd_soc_register_codec(codec);
+ if (ret != 0) {
+ dev_err(codec->dev, "Failed to register codec: %d\n", ret);
+ goto error;
+ }
+
+ ret = snd_soc_register_dai(&cs42l51_dai);
+ if (ret < 0) {
+ dev_err(&i2c_client->dev, "failed to register DAIe\n");
+ goto error_reg;
+ }
+
+ return 0;
+
+error_reg:
+ snd_soc_unregister_codec(codec);
+error:
+ return ret;
+}
+
+static int cs42l51_i2c_remove(struct i2c_client *client)
+{
+ struct cs42l51_private *cs42l51 = i2c_get_clientdata(client);
+ snd_soc_unregister_dai(&cs42l51_dai);
+ snd_soc_unregister_codec(&cs42l51->codec);
+ cs42l51_codec = NULL;
+ kfree(cs42l51);
+ return 0;
+}
+
+
+static const struct i2c_device_id cs42l51_id[] = {
+ {"cs42l51", 0},
+ {}
+};
+MODULE_DEVICE_TABLE(i2c, cs42l51_id);
+
+static struct i2c_driver cs42l51_i2c_driver = {
+ .driver = {
+ .name = "CS42L51 I2C",
+ .owner = THIS_MODULE,
+ },
+ .id_table = cs42l51_id,
+ .probe = cs42l51_i2c_probe,
+ .remove = cs42l51_i2c_remove,
+};
+
+static int cs42l51_get_chan_mix(struct snd_kcontrol *kcontrol,
+ struct snd_ctl_elem_value *ucontrol)
+{
+ struct snd_soc_codec *codec = snd_kcontrol_chip(kcontrol);
+ unsigned long value = snd_soc_read(codec, PCM_MIXER)&3;
+
+ switch (value) {
+ default:
+ case 0:
+ ucontrol->value.integer.value[0] = 0;
+ break;
+ case 1:
+ case 2:
+ ucontrol->value.integer.value[0] = 1;
+ break;
+ case 3:
+ ucontrol->value.integer.value[0] = 2;
+ break;
+ }
+
+ return 0;
+}
+
+#define CHAN_MIX_NORMAL 0x00
+#define CHAN_MIX_BOTH 0x55
+#define CHAN_MIX_SWAP 0xFF
+
+static int cs42l51_set_chan_mix(struct snd_kcontrol *kcontrol,
+ struct snd_ctl_elem_value *ucontrol)
+{
+ struct snd_soc_codec *codec = snd_kcontrol_chip(kcontrol);
+ unsigned char val;
+
+ switch (ucontrol->value.integer.value[0]) {
+ default:
+ case 0:
+ val = CHAN_MIX_NORMAL;
+ break;
+ case 1:
+ val = CHAN_MIX_BOTH;
+ break;
+ case 2:
+ val = CHAN_MIX_SWAP;
+ break;
+ }
+
+ snd_soc_write(codec, PCM_MIXER, val);
+
+ return 1;
+}
+
+static const DECLARE_TLV_DB_SCALE(adc_pcm_tlv, -5150, 50, 0);
+static const DECLARE_TLV_DB_SCALE(tone_tlv, -1050, 150, 0);
+/* This is a lie. after -102 db, it stays at -102 */
+/* maybe a range would be better */
+static const DECLARE_TLV_DB_SCALE(aout_tlv, -11550, 50, 0);
+
+static const char *mic_boost[] = { "+16dB", "+32dB"};
+
+static const char *chan_mix[] = {
+ "L R",
+ "L+R",
+ "R L",
+};
+
+static const struct soc_enum cs42l51_mix[] = {
+ SOC_ENUM_SINGLE_EXT(ARRAY_SIZE(chan_mix), chan_mix),
+ SOC_ENUM_DOUBLE(MIC_CTL, 0, 1, 2, mic_boost),
+};
+
+static const struct snd_kcontrol_new cs42l51_snd_controls[] = {
+ SOC_DOUBLE_R_SX_TLV("PCM Playback Volume",
+ PCMA_VOL, PCMB_VOL, 7, 0xffffff99, 0x18, adc_pcm_tlv),
+ SOC_DOUBLE_R("PCM Playback Switch", PCMA_VOL, PCMB_VOL, 7, 1, 1),
+ SOC_DOUBLE_R_SX_TLV("Analog Playback Volume",
+ AOUTA_VOL, AOUTB_VOL, 8, 0xffffff19, 0x18, aout_tlv),
+ SOC_DOUBLE_R_SX_TLV("ADC Mixer Volume",
+ ADCA_VOL, ADCB_VOL, 7, 0xffffff99, 0x18, adc_pcm_tlv),
+ SOC_DOUBLE_R("ADC Mixer Switch", PCMA_VOL, PCMB_VOL, 7, 1, 1),
+ SOC_SINGLE("Playback Deemphasis", DAC_CTL, 3, 1, 0),
+ SOC_SINGLE("Auto-Mute Switch", DAC_CTL, 2, 1, 0),
+ SOC_SINGLE("Soft Ramp Switch", DAC_CTL, 1, 1, 0),
+ SOC_SINGLE("Zero Cross Switch", DAC_CTL, 0, 0, 0),
+ SOC_SINGLE("Mic Bias", MIC_POWER_CTL, 1, 1, 1),
+ SOC_DOUBLE("Mic Powerdown", MIC_POWER_CTL, 2, 3, 1, 0),
+ SOC_ENUM("Mic Boost", cs42l51_mix[1]),
+ SOC_SINGLE_TLV("Bass Volume", TONE_CTL, 0, 0xf, 1, tone_tlv),
+ SOC_SINGLE_TLV("Treble Volume", TONE_CTL, 4, 0xf, 1, tone_tlv),
+ SOC_ENUM_EXT("PCM channel mixer",
+ cs42l51_mix[0],
+ cs42l51_get_chan_mix, cs42l51_set_chan_mix),
+};
+
+static int cs42l51_set_dai_fmt(struct snd_soc_dai *codec_dai,
+ unsigned int format)
+{
+ struct snd_soc_codec *codec = codec_dai->codec;
+ struct cs42l51_private *cs42l51 = codec->private_data;
+ int ret = 0;
+
+ switch (format & SND_SOC_DAIFMT_FORMAT_MASK) {
+ case SND_SOC_DAIFMT_I2S:
+ case SND_SOC_DAIFMT_LEFT_J:
+ case SND_SOC_DAIFMT_RIGHT_J:
+ cs42l51->audio_mode = format & SND_SOC_DAIFMT_FORMAT_MASK;
+ break;
+ default:
+ printk(KERN_ERR "cs4270: invalid DAI format\n");
+ ret = -EINVAL;
+ }
+
+ switch (SND_SOC_DAIFMT_MASTER_MASK) {
+ default:
+ case SND_SOC_DAIFMT_CBM_CFM:
+ cs42l51->func = MODE_SLAVE_AUTO;
+ break;
+ case SND_SOC_DAIFMT_CBS_CFS:
+ cs42l51->func = MODE_MASTER;
+ break;
+ }
+
+ return ret;
+}
+
+struct cs42l51_ratios {
+ unsigned int ratio;
+ unsigned char speed_mode;
+ unsigned char mclk;
+};
+
+static struct cs42l51_ratios slave_ratios[] = {
+ { 512, QSM_MODE, 0 }, { 768, QSM_MODE, 0 }, { 1024, QSM_MODE, 0 },
+ { 1536, QSM_MODE, 0 }, { 2048, QSM_MODE, 0 }, { 3072, QSM_MODE, 0 },
+ { 256, HSM_MODE, 0 }, { 384, HSM_MODE, 0 }, { 512, HSM_MODE, 0 },
+ { 768, HSM_MODE, 0 }, { 1024, HSM_MODE, 0 }, { 1536, HSM_MODE, 0 },
+ { 128, SSM_MODE, 0 }, { 192, SSM_MODE, 0 }, { 256, SSM_MODE, 0 },
+ { 384, SSM_MODE, 0 }, { 512, SSM_MODE, 0 }, { 768, SSM_MODE, 0 },
+ { 128, DSM_MODE, 0 }, { 192, DSM_MODE, 0 }, { 256, DSM_MODE, 0 },
+ { 384, DSM_MODE, 0 },
+};
+
+static struct cs42l51_ratios slave_auto_ratios[] = {
+ { 1024, QSM_MODE, 0 }, { 1536, QSM_MODE, 0 }, { 2048, QSM_MODE, 1 },
+ { 3072, QSM_MODE, 1 },
+ { 512, HSM_MODE, 0 }, { 768, HSM_MODE, 0 }, { 1024, HSM_MODE, 1 },
+ { 1536, HSM_MODE, 1 },
+ { 256, SSM_MODE, 0 }, { 384, SSM_MODE, 0 }, { 512, SSM_MODE, 1 },
+ { 768, SSM_MODE, 1 },
+ { 128, DSM_MODE, 0 }, { 192, DSM_MODE, 0 }, { 256, DSM_MODE, 1 },
+ { 384, DSM_MODE, 1 },
+};
+
+/* Fill me */
+static struct cs42l51_ratios master_ratios[] = { {},
+};
+
+static int cs42l51_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 cs42l51_private *cs42l51 = codec->private_data;
+ struct cs42l51_ratios *ratios = NULL;
+ int nr_ratios = 0;
+ unsigned int rates = 0;
+ unsigned int rate_min = -1;
+ unsigned int rate_max = 0;
+ int i;
+
+ cs42l51->mclk = freq;
+
+ switch (cs42l51->func) {
+ case MODE_MASTER:
+ ratios = master_ratios;
+ nr_ratios = ARRAY_SIZE(master_ratios);
+ break;
+ case MODE_SLAVE:
+ ratios = slave_ratios;
+ nr_ratios = ARRAY_SIZE(slave_ratios);
+ break;
+ case MODE_SLAVE_AUTO:
+ ratios = slave_auto_ratios;
+ nr_ratios = ARRAY_SIZE(slave_auto_ratios);
+ break;
+ }
+
+ for (i = 0; i < nr_ratios; i++) {
+ unsigned int rate = freq / ratios[i].ratio;
+ rates |= snd_pcm_rate_to_rate_bit(rate);
+ if (rate < rate_min)
+ rate_min = rate;
+ if (rate > rate_max)
+ rate_max = rate;
+ }
+ rates &= ~SNDRV_PCM_RATE_KNOT;
+
+ if (!rates) {
+ printk(KERN_ERR "cs42l51: could not find a valid sample rate\n");
+ return -EINVAL;
+ }
+
+ codec_dai->playback.rates = rates;
+ codec_dai->playback.rate_min = rate_min;
+ codec_dai->playback.rate_max = rate_max;
+
+ codec_dai->capture.rates = rates;
+ codec_dai->capture.rate_min = rate_min;
+ codec_dai->capture.rate_max = rate_max;
+
+ return 0;
+}
+
+static int cs42l51_hw_params(struct snd_pcm_substream *substream,
+ struct snd_pcm_hw_params *params,
+ struct snd_soc_dai *dai)
+{
+ struct snd_soc_pcm_runtime *rtd = substream->private_data;
+ struct snd_soc_device *socdev = rtd->socdev;
+ struct snd_soc_codec *codec = socdev->card->codec;
+ struct cs42l51_private *cs42l51 = codec->private_data;
+ int ret;
+ unsigned int i;
+ unsigned int rate;
+ unsigned int ratio;
+ struct cs42l51_ratios *ratios = NULL;
+ int nr_ratios = 0;
+ int intf_ctl, power_ctl;
+
+ switch (cs42l51->func) {
+ case MODE_MASTER:
+ ratios = master_ratios;
+ nr_ratios = ARRAY_SIZE(master_ratios);
+ break;
+ case MODE_SLAVE:
+ ratios = slave_ratios;
+ nr_ratios = ARRAY_SIZE(slave_ratios);
+ break;
+ case MODE_SLAVE_AUTO:
+ ratios = slave_auto_ratios;
+ nr_ratios = ARRAY_SIZE(slave_auto_ratios);
+ break;
+ }
+
+ /* Figure out which MCLK/LRCK ratio to use */
+ rate = params_rate(params); /* Sampling rate, in Hz */
+ ratio = cs42l51->mclk / rate; /* MCLK/LRCK ratio */
+ for (i = 0; i < nr_ratios; i++) {
+ if (ratios[i].ratio == ratio)
+ break;
+ }
+
+ if (i == nr_ratios) {
+ /* We did not find a matching ratio */
+ printk(KERN_ERR "cs42l51: could not find matching ratio\n");
+ return -EINVAL;
+ }
+
+ intf_ctl = snd_soc_read(codec, INTF_CTL);
+ power_ctl = snd_soc_read(codec, MIC_POWER_CTL);
+
+ intf_ctl &= ~(INTF_CTL_MASTER|INTF_CTL_ADC_I2S|INTF_CTL_DAC_FORMAT(7));
+ power_ctl &= ~(MIC_POWER_CTL_SPEED(3)|MIC_POWER_CTL_MCLK_DIV2);
+
+ switch (cs42l51->func) {
+ case MODE_MASTER:
+ intf_ctl |= INTF_CTL_MASTER;
+ power_ctl |= MIC_POWER_CTL_SPEED(ratios[i].speed_mode);
+ break;
+ case MODE_SLAVE:
+ power_ctl |= MIC_POWER_CTL_SPEED(ratios[i].speed_mode);
+ break;
+ case MODE_SLAVE_AUTO:
+ power_ctl |= MIC_POWER_CTL_AUTO;
+ break;
+ }
+
+ switch (cs42l51->audio_mode) {
+ case SND_SOC_DAIFMT_I2S:
+ intf_ctl |= INTF_CTL_ADC_I2S | INTF_CTL_DAC_FORMAT(DAC_DIF_I2S);
+ break;
+ case SND_SOC_DAIFMT_LEFT_J:
+ intf_ctl |= INTF_CTL_DAC_FORMAT(DAC_DIF_LJ24);
+ break;
+ case SND_SOC_DAIFMT_RIGHT_J:
+ switch (params_format(params)) {
+ case SNDRV_PCM_FORMAT_S16_LE:
+ case SNDRV_PCM_FORMAT_S16_BE:
+ intf_ctl |= INTF_CTL_DAC_FORMAT(DAC_DIF_RJ16);
+ break;
+ case SNDRV_PCM_FORMAT_S18_3LE:
+ case SNDRV_PCM_FORMAT_S18_3BE:
+ intf_ctl |= INTF_CTL_DAC_FORMAT(DAC_DIF_RJ18);
+ break;
+ case SNDRV_PCM_FORMAT_S20_3LE:
+ case SNDRV_PCM_FORMAT_S20_3BE:
+ intf_ctl |= INTF_CTL_DAC_FORMAT(DAC_DIF_RJ20);
+ break;
+ case SNDRV_PCM_FORMAT_S24_LE:
+ case SNDRV_PCM_FORMAT_S24_BE:
+ intf_ctl |= INTF_CTL_DAC_FORMAT(DAC_DIF_RJ24);
+ break;
+ default:
+ printk(KERN_ERR "cs42l51: unknown format\n");
+ return -EINVAL;
+ }
+ break;
+ default:
+ printk(KERN_ERR "cs42l51: unknown format\n");
+ return -EINVAL;
+ }
+
+ if (ratios[i].mclk)
+ power_ctl |= MIC_POWER_CTL_MCLK_DIV2;
+
+ ret = snd_soc_write(codec, INTF_CTL, intf_ctl);
+ if (ret < 0)
+ return ret;
+
+ ret = snd_soc_write(codec, MIC_POWER_CTL, power_ctl);
+ if (ret < 0)
+ return ret;
+
+ return 0;
+}
+
+static struct snd_soc_dai_ops cs42l51_dai_ops = {
+ .hw_params = cs42l51_hw_params,
+ .set_sysclk = cs42l51_set_dai_sysclk,
+ .set_fmt = cs42l51_set_dai_fmt,
+};
+
+struct snd_soc_dai cs42l51_dai = {
+ .name = "CS42L51 HiFi",
+ .playback = {
+ .stream_name = "Playback",
+ .channels_min = 1,
+ .channels_max = 2,
+ .rates = SNDRV_PCM_RATE_8000_96000,
+ .formats = CS42L51_FORMATS,
+ },
+ .capture = {
+ .stream_name = "Capture",
+ .channels_min = 1,
+ .channels_max = 2,
+ .rates = SNDRV_PCM_RATE_8000_96000,
+ .formats = CS42L51_FORMATS,
+ },
+ .ops = &cs42l51_dai_ops,
+};
+EXPORT_SYMBOL_GPL(cs42l51_dai);
+
+
+static int cs42l51_probe(struct platform_device *pdev)
+{
+ struct snd_soc_device *socdev = platform_get_drvdata(pdev);
+ struct snd_soc_codec *codec;
+ int ret = 0;
+ int i;
+
+ if (!cs42l51_codec) {
+ dev_err(&pdev->dev, "CS42L51 codec not yet registered\n");
+ return -EINVAL;
+ }
+
+ dev_info(&pdev->dev, "CS42L51 ALSA SoC Codec\n");
+
+ socdev->card->codec = cs42l51_codec;
+ codec = socdev->card->codec;
+
+ /* Register PCMs */
+ ret = snd_soc_new_pcms(socdev, SNDRV_DEFAULT_IDX1, SNDRV_DEFAULT_STR1);
+ if (ret < 0) {
+ dev_err(&pdev->dev, "failed to create PCMs\n");
+ return ret;
+ }
+
+ for (i = 0; i < ARRAY_SIZE(cs42l51_snd_controls); i++) {
+ ret = snd_ctl_add(codec->card,
+ snd_soc_cnew(&cs42l51_snd_controls[i],
+ codec, NULL));
+ if (ret < 0) {
+ dev_err(&pdev->dev, "failed to add controls\n");
+ snd_soc_free_pcms(socdev);
+ return ret;
+ }
+ }
+
+ return 0;
+}
+
+
+static int cs42l51_remove(struct platform_device *pdev)
+{
+ struct snd_soc_device *socdev = platform_get_drvdata(pdev);
+
+ snd_soc_free_pcms(socdev);
+
+ return 0;
+}
+
+struct snd_soc_codec_device soc_codec_device_cs42l51 = {
+ .probe = cs42l51_probe,
+ .remove = cs42l51_remove
+};
+EXPORT_SYMBOL_GPL(soc_codec_device_cs42l51);
+
+static int __init cs42l51_init(void)
+{
+ int ret;
+
+ ret = i2c_add_driver(&cs42l51_i2c_driver);
+ if (ret != 0) {
+ printk(KERN_ERR "can't add i2c driver\n");
+ return ret;
+ }
+ return 0;
+}
+module_init(cs42l51_init);
+
+static void __exit cs42l51_exit(void)
+{
+ i2c_del_driver(&cs42l51_i2c_driver);
+}
+module_exit(cs42l51_exit);
+
+MODULE_AUTHOR("Arnaud Patard <apatard@xxxxxxxxxxxx>");
+MODULE_DESCRIPTION("Cirrus Logic CS42L51 ALSA SoC Codec Driver");
+MODULE_LICENSE("GPL");
+
Index: linux-2.6.33/sound/soc/codecs/cs42l51.h
===================================================================
--- /dev/null 1970-01-01 00:00:00.000000000 +0000
+++ linux-2.6.33/sound/soc/codecs/cs42l51.h 2010-05-11 17:59:30.745650160 +0200
@@ -0,0 +1,167 @@
+/*
+ * cs42l51.h
+ *
+ * ASoC Driver for Cirrus Logic CS42L51 codecs
+ *
+ * Copyright (c) 2010 Arnaud Patard <apatard@xxxxxxxxxxxx>
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ */
+#ifndef _CS42L51_H
+#define CS42L51_H
+
+#define CHIP_ID 0x1B
+#define CHIP_REV 0x01
+
+#define CHIP_REV_ID 0x01
+#define MK_CHIP_REV(a, b) ((a)<<3|(b))
+
+#define POWER_CTL1 0x02
+#define POWER_CTL1_PDN_DACB (1<<6)
+#define POWER_CTL1_PDN_DACA (1<<5)
+#define POWER_CTL1_PDN_PGAB (1<<4)
+#define POWER_CTL1_PDN_PGAA (1<<3)
+#define POWER_CTL1_PDN_ADCB (1<<2)
+#define POWER_CTL1_PDN_ADCA (1<<1)
+#define POWER_CTL1_PDN (1<<0)
+
+#define MIC_POWER_CTL 0x03
+#define MIC_POWER_CTL_AUTO (1<<7)
+#define MIC_POWER_CTL_SPEED(x) (((x)&3)<<5)
+#define QSM_MODE 3
+#define HSM_MODE 2
+#define SSM_MODE 1
+#define DSM_MODE 0
+#define MIC_POWER_CTL_3ST_SP (1<<4)
+#define MIC_POWER_CTL_PDN_MICB (1<<3)
+#define MIC_POWER_CTL_PDN_MICA (1<<2)
+#define MIC_POWER_CTL_PDN_BIAS (1<<1)
+#define MIC_POWER_CTL_MCLK_DIV2 (1<<0)
+
+#define INTF_CTL 0x04
+#define INTF_CTL_LOOPBACK (1<<7)
+#define INTF_CTL_MASTER (1<<6)
+#define INTF_CTL_DAC_FORMAT(x) (((x)&7)<<3)
+#define DAC_DIF_LJ24 0x00
+#define DAC_DIF_I2S 0x01
+#define DAC_DIF_RJ24 0x02
+#define DAC_DIF_RJ20 0x03
+#define DAC_DIF_RJ18 0x04
+#define DAC_DIF_RJ16 0x05
+#define INTF_CTL_ADC_I2S (1<<2)
+#define INTF_CTL_DIGMIX (1<<1)
+#define INTF_CTL_MICMIX (1<<0)
+
+#define MIC_CTL 0x05
+#define MIC_CTL_ADC_SNGVOL (1<<7)
+#define MIC_CTL_ADCD_DBOOST (1<<6)
+#define MIC_CTL_ADCA_DBOOST (1<<5)
+#define MIC_CTL_MICBIAS_SEL (1<<4)
+#define MIC_CTL_MICBIAS_LVL(x) (((x)&3)<<2)
+#define MIC_CTL_MICB_BOOST (1<<1)
+#define MIC_CTL_MICA_BOOST (1<<0)
+
+#define ADC_CTL 0x06
+#define ADC_CTL_ADCB_HPFEN (1<<7)
+#define ADC_CTL_ADCB_HPFRZ (1<<6)
+#define ADC_CTL_ADCA_HPFEN (1<<5)
+#define ADC_CTL_ADCA_HPFRZ (1<<4)
+#define ADC_CTL_SOFTB (1<<3)
+#define ADC_CTL_ZCROSSB (1<<2)
+#define ADC_CTL_SOFTA (1<<1)
+#define ADC_CTL_ZCROSSA (1<<0)
+
+#define ADC_INPUT 0x07
+#define ADC_INPUT_AINB_MUX(x) (((x)&3)<<6)
+#define ADC_INPUT_AINA_MUX(x) (((x)&3)<<4)
+#define ADC_INPUT_INV_ADCB (1<<3)
+#define ADC_INPUT_INV_ADCA (1<<2)
+#define ADC_INPUT_ADCB_MUTE (1<<1)
+#define ADC_INPUT_ADCA_MUTE (1<<0)
+
+#define DAC_OUT_CTL 0x08
+#define DAC_OUT_CTL_HP_GAIN(x) (((x)&7)<<5)
+#define DAC_OUT_CTL_DAC_SNGVOL (1<<4)
+#define DAC_OUT_CTL_INV_PCMB (1<<3)
+#define DAC_OUT_CTL_INV_PCMA (1<<2)
+#define DAC_OUT_CTL_DACB_MUTE (1<<1)
+#define DAC_OUT_CTL_DACA_MUTE (1<<0)
+
+#define DAC_CTL 0x09
+#define DAC_CTL_DATA_SEL(x) (((x)&3)<<6)
+#define DAC_CTL_FREEZE (1<<5)
+#define DAC_CTL_DEEMPH (1<<3)
+#define DAC_CTL_AMUTE (1<<2)
+#define DAC_CTL_DACSZ(x) (((x)&3)<<0)
+
+#define ALC_PGA_CTL 0x0A
+#define ALC_PGB_CTL 0x0B
+#define ALC_PGX_ALCX_SRDIS (1<<7)
+#define ALC_PGX_ALCX_ZCDIS (1<<6)
+#define ALC_PGX_PGX_VOL(x) (((x)&0x1f)<<0)
+
+#define ADCA_ATT 0x0C
+#define ADCB_ATT 0x0D
+
+#define ADCA_VOL 0x0E
+#define ADCB_VOL 0x0F
+#define PCMA_VOL 0x10
+#define PCMB_VOL 0x11
+#define MIX_MUTE_ADCMIX (1<<7)
+#define MIX_VOLUME(x) (((x)&0x7f)<<0)
+
+#define BEEP_FREQ 0x12
+#define BEEP_VOL 0x13
+#define BEEP_CONF 0x14
+
+#define TONE_CTL 0x15
+#define TONE_CTL_TREB(x) (((x)&0xf)<<4)
+#define TONE_CTL_BASS(x) (((x)&0xf)<<0)
+
+#define AOUTA_VOL 0x16
+#define AOUTB_VOL 0x17
+#define PCM_MIXER 0x18
+#define LIMIT_THRES_DIS 0x19
+#define LIMIT_REL 0x1A
+#define LIMIT_ATT 0x1B
+#define ALC_EN 0x1C
+#define ALC_REL 0x1D
+#define ALC_THRES 0x1E
+#define NOISE_CONF 0x1F
+
+#define STATUS 0x20
+#define STATUS_SP_CLKERR (1<<6)
+#define STATUS_SPEA_OVFL (1<<5)
+#define STATUS_SPEB_OVFL (1<<4)
+#define STATUS_PCMA_OVFL (1<<3)
+#define STATUS_PCMB_OVFL (1<<2)
+#define STATUS_ADCA_OVFL (1<<1)
+#define STATUS_ADCB_OVFL (1<<0)
+
+#define CHARGE_FREQ 0x21
+
+#define CS42L51_FIRSTREG 0x01
+/*
+ * Hack: with register 0x21, it makes 33 registers. Looks like someone in the
+ * i2c layer doesn't like i2c smbus block read of 33 regs. Workaround by using
+ * 32 regs
+ */
+#define CS42L51_LASTREG 0x20
+#define CS42L51_NUMREGS (CS42L51_LASTREG - CS42L51_FIRSTREG + 1)
+
+struct cs42l51_setup_data {
+ int i2c_bus;
+ unsigned short i2c_address;
+};
+
+extern struct snd_soc_dai cs42l51_dai;
+extern struct snd_soc_codec_device soc_codec_device_cs42l51;
+#endif
Index: linux-2.6.33/sound/soc/codecs/Kconfig
===================================================================
--- linux-2.6.33.orig/sound/soc/codecs/Kconfig 2010-05-11 17:38:48.729650013 +0200
+++ linux-2.6.33/sound/soc/codecs/Kconfig 2010-05-11 17:59:30.745650160 +0200
@@ -21,6 +21,7 @@ config SND_SOC_ALL_CODECS
select SND_SOC_AK4535 if I2C
select SND_SOC_AK4642 if I2C
select SND_SOC_AK4671 if I2C
+ select SND_SOC_CS42L51 if I2C
select SND_SOC_CS4270 if I2C
select SND_SOC_MAX9877 if I2C
select SND_SOC_DA7210 if I2C
@@ -114,6 +115,9 @@ config SND_SOC_AK4642
config SND_SOC_AK4671
tristate
+config SND_SOC_CS42L51
+ tristate
+
# Cirrus Logic CS4270 Codec
config SND_SOC_CS4270
tristate
Index: linux-2.6.33/sound/soc/codecs/Makefile
===================================================================
--- linux-2.6.33.orig/sound/soc/codecs/Makefile 2010-05-11 17:38:48.753650032 +0200
+++ linux-2.6.33/sound/soc/codecs/Makefile 2010-05-11 17:59:30.745650160 +0200
@@ -8,6 +8,7 @@ snd-soc-ak4104-objs := ak4104.o
snd-soc-ak4535-objs := ak4535.o
snd-soc-ak4642-objs := ak4642.o
snd-soc-ak4671-objs := ak4671.o
+snd-soc-cs42l51-objs := cs42l51.o
snd-soc-cs4270-objs := cs4270.o
snd-soc-cx20442-objs := cx20442.o
snd-soc-da7210-objs := da7210.o
@@ -70,6 +71,7 @@ obj-$(CONFIG_SND_SOC_AK4104) += snd-soc-
obj-$(CONFIG_SND_SOC_AK4535) += snd-soc-ak4535.o
obj-$(CONFIG_SND_SOC_AK4642) += snd-soc-ak4642.o
obj-$(CONFIG_SND_SOC_AK4671) += snd-soc-ak4671.o
+obj-$(CONFIG_SND_SOC_CS42L51) += snd-soc-cs42l51.o
obj-$(CONFIG_SND_SOC_CS4270) += snd-soc-cs4270.o
obj-$(CONFIG_SND_SOC_CX20442) += snd-soc-cx20442.o
obj-$(CONFIG_SND_SOC_DA7210) += snd-soc-da7210.o
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