ASoC: Add driver for cs42l51
authorapatard@mandriva.com <apatard@mandriva.com>
Thu, 27 May 2010 12:57:41 +0000 (14:57 +0200)
committerMark Brown <broonie@opensource.wolfsonmicro.com>
Mon, 31 May 2010 11:20:02 +0000 (12:20 +0100)
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>
sound/soc/codecs/Kconfig
sound/soc/codecs/Makefile
sound/soc/codecs/cs42l51.c [new file with mode: 0644]
sound/soc/codecs/cs42l51.h [new file with mode: 0644]

index 31ac5538fe7ef1261192d1bd345ac103023481b0..c37c84458b5822f2793ccad26dec2a428de17dd2 100644 (file)
@@ -22,6 +22,7 @@ config SND_SOC_ALL_CODECS
        select SND_SOC_AK4642 if I2C
        select SND_SOC_AK4671 if I2C
        select SND_SOC_CQ0093VC if MFD_DAVINCI_VOICECODEC
+       select SND_SOC_CS42L51 if I2C
        select SND_SOC_CS4270 if I2C
        select SND_SOC_MAX9877 if I2C
        select SND_SOC_DA7210 if I2C
@@ -120,6 +121,9 @@ config SND_SOC_AK4671
 config SND_SOC_CQ0093VC
        tristate
 
+config SND_SOC_CS42L51
+       tristate
+
 # Cirrus Logic CS4270 Codec
 config SND_SOC_CS4270
        tristate
index 91429eab0707d57175143748028e502ce9ebf090..4a9c205caf56bf15f59bd99bf7c68a20ff9089c1 100644 (file)
@@ -9,6 +9,7 @@ snd-soc-ak4535-objs := ak4535.o
 snd-soc-ak4642-objs := ak4642.o
 snd-soc-ak4671-objs := ak4671.o
 snd-soc-cq93vc-objs := cq93vc.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
@@ -74,6 +75,7 @@ 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_CQ0093VC) += snd-soc-cq93vc.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
diff --git a/sound/soc/codecs/cs42l51.c b/sound/soc/codecs/cs42l51.c
new file mode 100644 (file)
index 0000000..dd9b855
--- /dev/null
@@ -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");
diff --git a/sound/soc/codecs/cs42l51.h b/sound/soc/codecs/cs42l51.h
new file mode 100644 (file)
index 0000000..8f0bd97
--- /dev/null
@@ -0,0 +1,163 @@
+/*
+ * cs42l51.h
+ *
+ * ASoC Driver for Cirrus Logic CS42L51 codecs
+ *
+ * Copyright (c) 2010 Arnaud Patard <apatard@mandriva.com>
+ *
+ * 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 CS42L51_CHIP_ID                        0x1B
+#define CS42L51_CHIP_REV_A             0x00
+#define CS42L51_CHIP_REV_B             0x01
+
+#define CS42L51_CHIP_REV_ID            0x01
+#define CS42L51_MK_CHIP_REV(a, b)      ((a)<<3|(b))
+
+#define CS42L51_POWER_CTL1             0x02
+#define CS42L51_POWER_CTL1_PDN_DACB    (1<<6)
+#define CS42L51_POWER_CTL1_PDN_DACA    (1<<5)
+#define CS42L51_POWER_CTL1_PDN_PGAB    (1<<4)
+#define CS42L51_POWER_CTL1_PDN_PGAA    (1<<3)
+#define CS42L51_POWER_CTL1_PDN_ADCB    (1<<2)
+#define CS42L51_POWER_CTL1_PDN_ADCA    (1<<1)
+#define CS42L51_POWER_CTL1_PDN         (1<<0)
+
+#define CS42L51_MIC_POWER_CTL          0x03
+#define CS42L51_MIC_POWER_CTL_AUTO     (1<<7)
+#define CS42L51_MIC_POWER_CTL_SPEED(x) (((x)&3)<<5)
+#define CS42L51_QSM_MODE               3
+#define CS42L51_HSM_MODE               2
+#define        CS42L51_SSM_MODE                1
+#define CS42L51_DSM_MODE               0
+#define CS42L51_MIC_POWER_CTL_3ST_SP   (1<<4)
+#define CS42L51_MIC_POWER_CTL_PDN_MICB (1<<3)
+#define CS42L51_MIC_POWER_CTL_PDN_MICA (1<<2)
+#define CS42L51_MIC_POWER_CTL_PDN_BIAS (1<<1)
+#define CS42L51_MIC_POWER_CTL_MCLK_DIV2        (1<<0)
+
+#define CS42L51_INTF_CTL               0x04
+#define CS42L51_INTF_CTL_LOOPBACK      (1<<7)
+#define CS42L51_INTF_CTL_MASTER                (1<<6)
+#define CS42L51_INTF_CTL_DAC_FORMAT(x) (((x)&7)<<3)
+#define CS42L51_DAC_DIF_LJ24           0x00
+#define CS42L51_DAC_DIF_I2S            0x01
+#define CS42L51_DAC_DIF_RJ24           0x02
+#define CS42L51_DAC_DIF_RJ20           0x03
+#define CS42L51_DAC_DIF_RJ18           0x04
+#define CS42L51_DAC_DIF_RJ16           0x05
+#define CS42L51_INTF_CTL_ADC_I2S       (1<<2)
+#define CS42L51_INTF_CTL_DIGMIX                (1<<1)
+#define CS42L51_INTF_CTL_MICMIX                (1<<0)
+
+#define CS42L51_MIC_CTL                        0x05
+#define CS42L51_MIC_CTL_ADC_SNGVOL     (1<<7)
+#define CS42L51_MIC_CTL_ADCD_DBOOST    (1<<6)
+#define CS42L51_MIC_CTL_ADCA_DBOOST    (1<<5)
+#define CS42L51_MIC_CTL_MICBIAS_SEL    (1<<4)
+#define CS42L51_MIC_CTL_MICBIAS_LVL(x) (((x)&3)<<2)
+#define CS42L51_MIC_CTL_MICB_BOOST     (1<<1)
+#define CS42L51_MIC_CTL_MICA_BOOST     (1<<0)
+
+#define CS42L51_ADC_CTL                        0x06
+#define CS42L51_ADC_CTL_ADCB_HPFEN     (1<<7)
+#define CS42L51_ADC_CTL_ADCB_HPFRZ     (1<<6)
+#define CS42L51_ADC_CTL_ADCA_HPFEN     (1<<5)
+#define CS42L51_ADC_CTL_ADCA_HPFRZ     (1<<4)
+#define CS42L51_ADC_CTL_SOFTB          (1<<3)
+#define CS42L51_ADC_CTL_ZCROSSB                (1<<2)
+#define CS42L51_ADC_CTL_SOFTA          (1<<1)
+#define CS42L51_ADC_CTL_ZCROSSA                (1<<0)
+
+#define CS42L51_ADC_INPUT              0x07
+#define CS42L51_ADC_INPUT_AINB_MUX(x)  (((x)&3)<<6)
+#define CS42L51_ADC_INPUT_AINA_MUX(x)  (((x)&3)<<4)
+#define CS42L51_ADC_INPUT_INV_ADCB     (1<<3)
+#define CS42L51_ADC_INPUT_INV_ADCA     (1<<2)
+#define CS42L51_ADC_INPUT_ADCB_MUTE    (1<<1)
+#define CS42L51_ADC_INPUT_ADCA_MUTE    (1<<0)
+
+#define CS42L51_DAC_OUT_CTL            0x08
+#define CS42L51_DAC_OUT_CTL_HP_GAIN(x) (((x)&7)<<5)
+#define CS42L51_DAC_OUT_CTL_DAC_SNGVOL (1<<4)
+#define CS42L51_DAC_OUT_CTL_INV_PCMB   (1<<3)
+#define CS42L51_DAC_OUT_CTL_INV_PCMA   (1<<2)
+#define CS42L51_DAC_OUT_CTL_DACB_MUTE  (1<<1)
+#define CS42L51_DAC_OUT_CTL_DACA_MUTE  (1<<0)
+
+#define CS42L51_DAC_CTL                        0x09
+#define CS42L51_DAC_CTL_DATA_SEL(x)    (((x)&3)<<6)
+#define CS42L51_DAC_CTL_FREEZE         (1<<5)
+#define CS42L51_DAC_CTL_DEEMPH         (1<<3)
+#define CS42L51_DAC_CTL_AMUTE          (1<<2)
+#define CS42L51_DAC_CTL_DACSZ(x)       (((x)&3)<<0)
+
+#define CS42L51_ALC_PGA_CTL            0x0A
+#define CS42L51_ALC_PGB_CTL            0x0B
+#define CS42L51_ALC_PGX_ALCX_SRDIS     (1<<7)
+#define CS42L51_ALC_PGX_ALCX_ZCDIS     (1<<6)
+#define CS42L51_ALC_PGX_PGX_VOL(x)     (((x)&0x1f)<<0)
+
+#define CS42L51_ADCA_ATT               0x0C
+#define CS42L51_ADCB_ATT               0x0D
+
+#define CS42L51_ADCA_VOL               0x0E
+#define CS42L51_ADCB_VOL               0x0F
+#define CS42L51_PCMA_VOL               0x10
+#define CS42L51_PCMB_VOL               0x11
+#define CS42L51_MIX_MUTE_ADCMIX                (1<<7)
+#define CS42L51_MIX_VOLUME(x)          (((x)&0x7f)<<0)
+
+#define CS42L51_BEEP_FREQ              0x12
+#define CS42L51_BEEP_VOL               0x13
+#define CS42L51_BEEP_CONF              0x14
+
+#define CS42L51_TONE_CTL               0x15
+#define CS42L51_TONE_CTL_TREB(x)       (((x)&0xf)<<4)
+#define CS42L51_TONE_CTL_BASS(x)       (((x)&0xf)<<0)
+
+#define CS42L51_AOUTA_VOL              0x16
+#define CS42L51_AOUTB_VOL              0x17
+#define CS42L51_PCM_MIXER              0x18
+#define CS42L51_LIMIT_THRES_DIS                0x19
+#define CS42L51_LIMIT_REL              0x1A
+#define CS42L51_LIMIT_ATT              0x1B
+#define CS42L51_ALC_EN                 0x1C
+#define CS42L51_ALC_REL                        0x1D
+#define CS42L51_ALC_THRES              0x1E
+#define CS42L51_NOISE_CONF             0x1F
+
+#define CS42L51_STATUS                 0x20
+#define CS42L51_STATUS_SP_CLKERR       (1<<6)
+#define CS42L51_STATUS_SPEA_OVFL       (1<<5)
+#define CS42L51_STATUS_SPEB_OVFL       (1<<4)
+#define CS42L51_STATUS_PCMA_OVFL       (1<<3)
+#define CS42L51_STATUS_PCMB_OVFL       (1<<2)
+#define CS42L51_STATUS_ADCA_OVFL       (1<<1)
+#define CS42L51_STATUS_ADCB_OVFL       (1<<0)
+
+#define CS42L51_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)
+
+extern struct snd_soc_dai cs42l51_dai;
+extern struct snd_soc_codec_device soc_codec_device_cs42l51;
+#endif