ASoC: Add driver for cs42l51
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@mandriva.com>
Acked-by: Liam Girdwood <lrg@slimlogic.co.ul>
Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
diff --git a/sound/soc/codecs/cs42l51.c b/sound/soc/codecs/cs42l51.c
new file mode 100644
index 0000000..dd9b855
--- /dev/null
+++ b/sound/soc/codecs/cs42l51.c
@@ -0,0 +1,763 @@
+/*
+ * cs42l51.c
+ *
+ * ASoC Driver for Cirrus Logic CS42L51 codecs
+ *
+ * Copyright (c) 2010 Arnaud Patard <apatard@mandriva.com>
+ *
+ * Based on cs4270.c - Copyright (c) Freescale Semiconductor
+ *
+ * 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.
+ *
+ * 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/soc-dapm.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 master_slave_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 master_slave_mode func;
+ struct snd_soc_codec codec;
+ u8 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 + 1;
+ 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 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, CS42L51_CHIP_REV_ID);
+ if (ret < 0) {
+ dev_err(&i2c_client->dev, "failed to read I2C\n");
+ goto error;
+ }
+
+ if ((ret != CS42L51_MK_CHIP_REV(CS42L51_CHIP_ID, CS42L51_CHIP_REV_A)) &&
+ (ret != CS42L51_MK_CHIP_REV(CS42L51_CHIP_ID, CS42L51_CHIP_REV_B))) {
+ dev_err(&i2c_client->dev, "Invalid chip id\n");
+ ret = -ENODEV;
+ goto error;
+ }
+
+ dev_info(&i2c_client->dev, "found device cs42l51 rev %d\n",
+ ret & 7);
+
+ 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;
+ snd_soc_codec_set_drvdata(codec, cs42l51);
+
+ codec->control_data = i2c_client;
+ codec->reg_cache = cs42l51->reg_cache;
+ codec->reg_cache_size = CS42L51_NUMREGS;
+ i2c_set_clientdata(i2c_client, codec);
+
+ ret = cs42l51_fill_cache(codec);
+ if (ret < 0) {
+ dev_err(&i2c_client->dev, "failed to fill register cache\n");
+ goto error_alloc;
+ }
+
+ ret = snd_soc_codec_set_cache_io(codec, 8, 8, SND_SOC_I2C);
+ if (ret < 0) {
+ dev_err(&i2c_client->dev, "Failed to set cache I/O: %d\n", ret);
+ goto error_alloc;
+ }
+
+ /*
+ * DAC configuration
+ * - Use signal processor
+ * - auto mute
+ * - vol changes immediate
+ * - no de-emphasize
+ */
+ reg = CS42L51_DAC_CTL_DATA_SEL(1)
+ | CS42L51_DAC_CTL_AMUTE | CS42L51_DAC_CTL_DACSZ(0);
+ ret = snd_soc_write(codec, CS42L51_DAC_CTL, reg);
+ if (ret < 0)
+ goto error_alloc;
+
+ 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_alloc;
+ }
+
+ 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_alloc:
+ kfree(cs42l51);
+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, CS42L51_PCM_MIXER)&3;
+
+ switch (value) {
+ default:
+ case 0:
+ ucontrol->value.integer.value[0] = 0;
+ break;
+ /* same value : (L+R)/2 and (R+L)/2 */
+ 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, CS42L51_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 DECLARE_TLV_DB_SCALE(boost_tlv, 1600, 1600, 0);
+static const char *chan_mix[] = {
+ "L R",
+ "L+R",
+ "R L",
+};
+
+static const struct soc_enum cs42l51_chan_mix =
+ SOC_ENUM_SINGLE_EXT(ARRAY_SIZE(chan_mix), chan_mix);
+
+static const struct snd_kcontrol_new cs42l51_snd_controls[] = {
+ SOC_DOUBLE_R_SX_TLV("PCM Playback Volume",
+ CS42L51_PCMA_VOL, CS42L51_PCMB_VOL,
+ 7, 0xffffff99, 0x18, adc_pcm_tlv),
+ SOC_DOUBLE_R("PCM Playback Switch",
+ CS42L51_PCMA_VOL, CS42L51_PCMB_VOL, 7, 1, 1),
+ SOC_DOUBLE_R_SX_TLV("Analog Playback Volume",
+ CS42L51_AOUTA_VOL, CS42L51_AOUTB_VOL,
+ 8, 0xffffff19, 0x18, aout_tlv),
+ SOC_DOUBLE_R_SX_TLV("ADC Mixer Volume",
+ CS42L51_ADCA_VOL, CS42L51_ADCB_VOL,
+ 7, 0xffffff99, 0x18, adc_pcm_tlv),
+ SOC_DOUBLE_R("ADC Mixer Switch",
+ CS42L51_ADCA_VOL, CS42L51_ADCB_VOL, 7, 1, 1),
+ SOC_SINGLE("Playback Deemphasis Switch", CS42L51_DAC_CTL, 3, 1, 0),
+ SOC_SINGLE("Auto-Mute Switch", CS42L51_DAC_CTL, 2, 1, 0),
+ SOC_SINGLE("Soft Ramp Switch", CS42L51_DAC_CTL, 1, 1, 0),
+ SOC_SINGLE("Zero Cross Switch", CS42L51_DAC_CTL, 0, 0, 0),
+ SOC_DOUBLE_TLV("Mic Boost Volume",
+ CS42L51_MIC_CTL, 0, 1, 1, 0, boost_tlv),
+ SOC_SINGLE_TLV("Bass Volume", CS42L51_TONE_CTL, 0, 0xf, 1, tone_tlv),
+ SOC_SINGLE_TLV("Treble Volume", CS42L51_TONE_CTL, 4, 0xf, 1, tone_tlv),
+ SOC_ENUM_EXT("PCM channel mixer",
+ cs42l51_chan_mix,
+ cs42l51_get_chan_mix, cs42l51_set_chan_mix),
+};
+
+/*
+ * to power down, one must:
+ * 1.) Enable the PDN bit
+ * 2.) enable power-down for the select channels
+ * 3.) disable the PDN bit.
+ */
+static int cs42l51_pdn_event(struct snd_soc_dapm_widget *w,
+ struct snd_kcontrol *kcontrol, int event)
+{
+ unsigned long value;
+
+ value = snd_soc_read(w->codec, CS42L51_POWER_CTL1);
+ value &= ~CS42L51_POWER_CTL1_PDN;
+
+ switch (event) {
+ case SND_SOC_DAPM_PRE_PMD:
+ value |= CS42L51_POWER_CTL1_PDN;
+ break;
+ default:
+ case SND_SOC_DAPM_POST_PMD:
+ break;
+ }
+ snd_soc_update_bits(w->codec, CS42L51_POWER_CTL1,
+ CS42L51_POWER_CTL1_PDN, value);
+
+ return 0;
+}
+
+static const char *cs42l51_dac_names[] = {"Direct PCM",
+ "DSP PCM", "ADC"};
+static const struct soc_enum cs42l51_dac_mux_enum =
+ SOC_ENUM_SINGLE(CS42L51_DAC_CTL, 6, 3, cs42l51_dac_names);
+static const struct snd_kcontrol_new cs42l51_dac_mux_controls =
+ SOC_DAPM_ENUM("Route", cs42l51_dac_mux_enum);
+
+static const char *cs42l51_adcl_names[] = {"AIN1 Left", "AIN2 Left",
+ "MIC Left", "MIC+preamp Left"};
+static const struct soc_enum cs42l51_adcl_mux_enum =
+ SOC_ENUM_SINGLE(CS42L51_ADC_INPUT, 4, 4, cs42l51_adcl_names);
+static const struct snd_kcontrol_new cs42l51_adcl_mux_controls =
+ SOC_DAPM_ENUM("Route", cs42l51_adcl_mux_enum);
+
+static const char *cs42l51_adcr_names[] = {"AIN1 Right", "AIN2 Right",
+ "MIC Right", "MIC+preamp Right"};
+static const struct soc_enum cs42l51_adcr_mux_enum =
+ SOC_ENUM_SINGLE(CS42L51_ADC_INPUT, 6, 4, cs42l51_adcr_names);
+static const struct snd_kcontrol_new cs42l51_adcr_mux_controls =
+ SOC_DAPM_ENUM("Route", cs42l51_adcr_mux_enum);
+
+static const struct snd_soc_dapm_widget cs42l51_dapm_widgets[] = {
+ SND_SOC_DAPM_MICBIAS("Mic Bias", CS42L51_MIC_POWER_CTL, 1, 1),
+ SND_SOC_DAPM_PGA_E("Left PGA", CS42L51_POWER_CTL1, 3, 1, NULL, 0,
+ cs42l51_pdn_event, SND_SOC_DAPM_PRE_POST_PMD),
+ SND_SOC_DAPM_PGA_E("Right PGA", CS42L51_POWER_CTL1, 4, 1, NULL, 0,
+ cs42l51_pdn_event, SND_SOC_DAPM_PRE_POST_PMD),
+ SND_SOC_DAPM_ADC_E("Left ADC", "Left HiFi Capture",
+ CS42L51_POWER_CTL1, 1, 1,
+ cs42l51_pdn_event, SND_SOC_DAPM_PRE_POST_PMD),
+ SND_SOC_DAPM_ADC_E("Right ADC", "Right HiFi Capture",
+ CS42L51_POWER_CTL1, 2, 1,
+ cs42l51_pdn_event, SND_SOC_DAPM_PRE_POST_PMD),
+ SND_SOC_DAPM_DAC_E("Left DAC", "Left HiFi Playback",
+ CS42L51_POWER_CTL1, 5, 1,
+ cs42l51_pdn_event, SND_SOC_DAPM_PRE_POST_PMD),
+ SND_SOC_DAPM_DAC_E("Right DAC", "Right HiFi Playback",
+ CS42L51_POWER_CTL1, 6, 1,
+ cs42l51_pdn_event, SND_SOC_DAPM_PRE_POST_PMD),
+
+ /* analog/mic */
+ SND_SOC_DAPM_INPUT("AIN1L"),
+ SND_SOC_DAPM_INPUT("AIN1R"),
+ SND_SOC_DAPM_INPUT("AIN2L"),
+ SND_SOC_DAPM_INPUT("AIN2R"),
+ SND_SOC_DAPM_INPUT("MICL"),
+ SND_SOC_DAPM_INPUT("MICR"),
+
+ SND_SOC_DAPM_MIXER("Mic Preamp Left",
+ CS42L51_MIC_POWER_CTL, 2, 1, NULL, 0),
+ SND_SOC_DAPM_MIXER("Mic Preamp Right",
+ CS42L51_MIC_POWER_CTL, 3, 1, NULL, 0),
+
+ /* HP */
+ SND_SOC_DAPM_OUTPUT("HPL"),
+ SND_SOC_DAPM_OUTPUT("HPR"),
+
+ /* mux */
+ SND_SOC_DAPM_MUX("DAC Mux", SND_SOC_NOPM, 0, 0,
+ &cs42l51_dac_mux_controls),
+ SND_SOC_DAPM_MUX("PGA-ADC Mux Left", SND_SOC_NOPM, 0, 0,
+ &cs42l51_adcl_mux_controls),
+ SND_SOC_DAPM_MUX("PGA-ADC Mux Right", SND_SOC_NOPM, 0, 0,
+ &cs42l51_adcr_mux_controls),
+};
+
+static const struct snd_soc_dapm_route cs42l51_routes[] = {
+ {"HPL", NULL, "Left DAC"},
+ {"HPR", NULL, "Right DAC"},
+
+ {"Left ADC", NULL, "Left PGA"},
+ {"Right ADC", NULL, "Right PGA"},
+
+ {"Mic Preamp Left", NULL, "MICL"},
+ {"Mic Preamp Right", NULL, "MICR"},
+
+ {"PGA-ADC Mux Left", "AIN1 Left", "AIN1L" },
+ {"PGA-ADC Mux Left", "AIN2 Left", "AIN2L" },
+ {"PGA-ADC Mux Left", "MIC Left", "MICL" },
+ {"PGA-ADC Mux Left", "MIC+preamp Left", "Mic Preamp Left" },
+ {"PGA-ADC Mux Right", "AIN1 Right", "AIN1R" },
+ {"PGA-ADC Mux Right", "AIN2 Right", "AIN2R" },
+ {"PGA-ADC Mux Right", "MIC Right", "MICR" },
+ {"PGA-ADC Mux Right", "MIC+preamp Right", "Mic Preamp Right" },
+
+ {"Left PGA", NULL, "PGA-ADC Mux Left"},
+ {"Right PGA", NULL, "PGA-ADC Mux Right"},
+};
+
+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 = snd_soc_codec_get_drvdata(codec);
+ 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:
+ dev_err(codec->dev, "invalid DAI format\n");
+ ret = -EINVAL;
+ }
+
+ switch (format & SND_SOC_DAIFMT_MASTER_MASK) {
+ case SND_SOC_DAIFMT_CBM_CFM:
+ cs42l51->func = MODE_MASTER;
+ break;
+ case SND_SOC_DAIFMT_CBS_CFS:
+ cs42l51->func = MODE_SLAVE_AUTO;
+ break;
+ default:
+ ret = -EINVAL;
+ break;
+ }
+
+ return ret;
+}
+
+struct cs42l51_ratios {
+ unsigned int ratio;
+ unsigned char speed_mode;
+ unsigned char mclk;
+};
+
+static struct cs42l51_ratios slave_ratios[] = {
+ { 512, CS42L51_QSM_MODE, 0 }, { 768, CS42L51_QSM_MODE, 0 },
+ { 1024, CS42L51_QSM_MODE, 0 }, { 1536, CS42L51_QSM_MODE, 0 },
+ { 2048, CS42L51_QSM_MODE, 0 }, { 3072, CS42L51_QSM_MODE, 0 },
+ { 256, CS42L51_HSM_MODE, 0 }, { 384, CS42L51_HSM_MODE, 0 },
+ { 512, CS42L51_HSM_MODE, 0 }, { 768, CS42L51_HSM_MODE, 0 },
+ { 1024, CS42L51_HSM_MODE, 0 }, { 1536, CS42L51_HSM_MODE, 0 },
+ { 128, CS42L51_SSM_MODE, 0 }, { 192, CS42L51_SSM_MODE, 0 },
+ { 256, CS42L51_SSM_MODE, 0 }, { 384, CS42L51_SSM_MODE, 0 },
+ { 512, CS42L51_SSM_MODE, 0 }, { 768, CS42L51_SSM_MODE, 0 },
+ { 128, CS42L51_DSM_MODE, 0 }, { 192, CS42L51_DSM_MODE, 0 },
+ { 256, CS42L51_DSM_MODE, 0 }, { 384, CS42L51_DSM_MODE, 0 },
+};
+
+static struct cs42l51_ratios slave_auto_ratios[] = {
+ { 1024, CS42L51_QSM_MODE, 0 }, { 1536, CS42L51_QSM_MODE, 0 },
+ { 2048, CS42L51_QSM_MODE, 1 }, { 3072, CS42L51_QSM_MODE, 1 },
+ { 512, CS42L51_HSM_MODE, 0 }, { 768, CS42L51_HSM_MODE, 0 },
+ { 1024, CS42L51_HSM_MODE, 1 }, { 1536, CS42L51_HSM_MODE, 1 },
+ { 256, CS42L51_SSM_MODE, 0 }, { 384, CS42L51_SSM_MODE, 0 },
+ { 512, CS42L51_SSM_MODE, 1 }, { 768, CS42L51_SSM_MODE, 1 },
+ { 128, CS42L51_DSM_MODE, 0 }, { 192, CS42L51_DSM_MODE, 0 },
+ { 256, CS42L51_DSM_MODE, 1 }, { 384, CS42L51_DSM_MODE, 1 },
+};
+
+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 = snd_soc_codec_get_drvdata(codec);
+ 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:
+ return -EINVAL;
+ 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) {
+ dev_err(codec->dev, "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 = snd_soc_codec_get_drvdata(codec);
+ 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, fmt;
+
+ switch (cs42l51->func) {
+ case MODE_MASTER:
+ return -EINVAL;
+ 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 */
+ dev_err(codec->dev, "could not find matching ratio\n");
+ return -EINVAL;
+ }
+
+ intf_ctl = snd_soc_read(codec, CS42L51_INTF_CTL);
+ power_ctl = snd_soc_read(codec, CS42L51_MIC_POWER_CTL);
+
+ intf_ctl &= ~(CS42L51_INTF_CTL_MASTER | CS42L51_INTF_CTL_ADC_I2S
+ | CS42L51_INTF_CTL_DAC_FORMAT(7));
+ power_ctl &= ~(CS42L51_MIC_POWER_CTL_SPEED(3)
+ | CS42L51_MIC_POWER_CTL_MCLK_DIV2);
+
+ switch (cs42l51->func) {
+ case MODE_MASTER:
+ intf_ctl |= CS42L51_INTF_CTL_MASTER;
+ power_ctl |= CS42L51_MIC_POWER_CTL_SPEED(ratios[i].speed_mode);
+ break;
+ case MODE_SLAVE:
+ power_ctl |= CS42L51_MIC_POWER_CTL_SPEED(ratios[i].speed_mode);
+ break;
+ case MODE_SLAVE_AUTO:
+ power_ctl |= CS42L51_MIC_POWER_CTL_AUTO;
+ break;
+ }
+
+ switch (cs42l51->audio_mode) {
+ case SND_SOC_DAIFMT_I2S:
+ intf_ctl |= CS42L51_INTF_CTL_ADC_I2S;
+ intf_ctl |= CS42L51_INTF_CTL_DAC_FORMAT(CS42L51_DAC_DIF_I2S);
+ break;
+ case SND_SOC_DAIFMT_LEFT_J:
+ intf_ctl |= CS42L51_INTF_CTL_DAC_FORMAT(CS42L51_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:
+ fmt = CS42L51_DAC_DIF_RJ16;
+ break;
+ case SNDRV_PCM_FORMAT_S18_3LE:
+ case SNDRV_PCM_FORMAT_S18_3BE:
+ fmt = CS42L51_DAC_DIF_RJ18;
+ break;
+ case SNDRV_PCM_FORMAT_S20_3LE:
+ case SNDRV_PCM_FORMAT_S20_3BE:
+ fmt = CS42L51_DAC_DIF_RJ20;
+ break;
+ case SNDRV_PCM_FORMAT_S24_LE:
+ case SNDRV_PCM_FORMAT_S24_BE:
+ fmt = CS42L51_DAC_DIF_RJ24;
+ break;
+ default:
+ dev_err(codec->dev, "unknown format\n");
+ return -EINVAL;
+ }
+ intf_ctl |= CS42L51_INTF_CTL_DAC_FORMAT(fmt);
+ break;
+ default:
+ dev_err(codec->dev, "unknown format\n");
+ return -EINVAL;
+ }
+
+ if (ratios[i].mclk)
+ power_ctl |= CS42L51_MIC_POWER_CTL_MCLK_DIV2;
+
+ ret = snd_soc_write(codec, CS42L51_INTF_CTL, intf_ctl);
+ if (ret < 0)
+ return ret;
+
+ ret = snd_soc_write(codec, CS42L51_MIC_POWER_CTL, power_ctl);
+ if (ret < 0)
+ return ret;
+
+ return 0;
+}
+
+static int cs42l51_dai_mute(struct snd_soc_dai *dai, int mute)
+{
+ struct snd_soc_codec *codec = dai->codec;
+ int reg;
+ int mask = CS42L51_DAC_OUT_CTL_DACA_MUTE|CS42L51_DAC_OUT_CTL_DACB_MUTE;
+
+ reg = snd_soc_read(codec, CS42L51_DAC_OUT_CTL);
+
+ if (mute)
+ reg |= mask;
+ else
+ reg &= ~mask;
+
+ return snd_soc_write(codec, CS42L51_DAC_OUT_CTL, reg);
+}
+
+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,
+ .digital_mute = cs42l51_dai_mute,
+};
+
+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;
+
+ if (!cs42l51_codec) {
+ dev_err(&pdev->dev, "CS42L51 codec not yet registered\n");
+ return -EINVAL;
+ }
+
+ 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;
+ }
+
+ snd_soc_add_controls(codec, cs42l51_snd_controls,
+ ARRAY_SIZE(cs42l51_snd_controls));
+ snd_soc_dapm_new_controls(codec, cs42l51_dapm_widgets,
+ ARRAY_SIZE(cs42l51_dapm_widgets));
+ snd_soc_dapm_add_routes(codec, cs42l51_routes,
+ ARRAY_SIZE(cs42l51_routes));
+
+ return 0;
+}
+
+
+static int cs42l51_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_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 "%s: can't add i2c driver\n", __func__);
+ 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@mandriva.com>");
+MODULE_DESCRIPTION("Cirrus Logic CS42L51 ALSA SoC Codec Driver");
+MODULE_LICENSE("GPL");