[alsa-devel] [PATCH 2/4] SOUND: SOC: CODECS: Add support for the TWL4030 audio codec
sakoman at gmail.com
sakoman at gmail.com
Mon Sep 1 23:57:57 CEST 2008
From: Steve Sakoman <steve at sakoman.com>
Signed-off-by: Steve Sakoman <steve at sakoman.com>
---
sound/soc/codecs/Kconfig | 5 +
sound/soc/codecs/Makefile | 2 +
sound/soc/codecs/twl4030.c | 618 ++++++++++++++++++++++++++++++++++++++++++++
sound/soc/codecs/twl4030.h | 152 +++++++++++
4 files changed, 777 insertions(+), 0 deletions(-)
create mode 100644 sound/soc/codecs/twl4030.c
create mode 100644 sound/soc/codecs/twl4030.h
diff --git a/sound/soc/codecs/Kconfig b/sound/soc/codecs/Kconfig
index 1db04a2..2f00e1e 100644
--- a/sound/soc/codecs/Kconfig
+++ b/sound/soc/codecs/Kconfig
@@ -50,3 +50,8 @@ config SND_SOC_CS4270_VD33_ERRATA
config SND_SOC_TLV320AIC3X
tristate
depends on I2C
+
+config SND_SOC_TWL4030
+ tristate
+ depends on SND_SOC && I2C
+
diff --git a/sound/soc/codecs/Makefile b/sound/soc/codecs/Makefile
index d7b97ab..a519ced 100644
--- a/sound/soc/codecs/Makefile
+++ b/sound/soc/codecs/Makefile
@@ -10,6 +10,7 @@ snd-soc-wm9712-objs := wm9712.o
snd-soc-wm9713-objs := wm9713.o
snd-soc-cs4270-objs := cs4270.o
snd-soc-tlv320aic3x-objs := tlv320aic3x.o
+snd-soc-twl4030-objs := twl4030.o
obj-$(CONFIG_SND_SOC_AC97_CODEC) += snd-soc-ac97.o
obj-$(CONFIG_SND_SOC_AK4535) += snd-soc-ak4535.o
@@ -23,3 +24,4 @@ obj-$(CONFIG_SND_SOC_WM9712) += snd-soc-wm9712.o
obj-$(CONFIG_SND_SOC_WM9713) += snd-soc-wm9713.o
obj-$(CONFIG_SND_SOC_CS4270) += snd-soc-cs4270.o
obj-$(CONFIG_SND_SOC_TLV320AIC3X) += snd-soc-tlv320aic3x.o
+obj-$(CONFIG_SND_SOC_TWL4030) += snd-soc-twl4030.o
diff --git a/sound/soc/codecs/twl4030.c b/sound/soc/codecs/twl4030.c
new file mode 100644
index 0000000..e2917e3
--- /dev/null
+++ b/sound/soc/codecs/twl4030.c
@@ -0,0 +1,618 @@
+/*
+ * ALSA SoC TWL4030 codec driver
+ *
+ * Author: Steve Sakoman, <steve at sakoman.com>
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License version 2 as
+ * published by the Free Software Foundation.
+ */
+
+#include <linux/module.h>
+#include <linux/moduleparam.h>
+#include <linux/init.h>
+#include <linux/delay.h>
+#include <linux/pm.h>
+#include <linux/i2c.h>
+#include <linux/platform_device.h>
+#include <linux/i2c/twl4030.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 "twl4030.h"
+
+/*
+ * twl4030 register cache & default register settings
+ */
+static const u8 twl4030_reg[TWL4030_CACHEREGNUM] = {
+ 0x00, /* this register not used */
+ 0x93, /* REG_CODEC_MODE (0x1) */
+ 0xc3, /* REG_OPTION (0x2) */
+ 0x00, /* REG_UNKNOWN (0x3) */
+ 0x00, /* REG_MICBIAS_CTL (0x4) */
+ 0x34, /* REG_ANAMICL (0x5) */
+ 0x14, /* REG_ANAMICR (0x6) */
+ 0x0a, /* REG_AVADC_CTL (0x7) */
+ 0x00, /* REG_ADCMICSEL (0x8) */
+ 0x00, /* REG_DIGMIXING (0x9) */
+ 0x0c, /* REG_ATXL1PGA (0xA) */
+ 0x0c, /* REG_ATXR1PGA (0xB) */
+ 0x00, /* REG_AVTXL2PGA (0xC) */
+ 0x00, /* REG_AVTXR2PGA (0xD) */
+ 0x01, /* REG_AUDIO_IF (0xE) */
+ 0x00, /* REG_VOICE_IF (0xF) */
+ 0x00, /* REG_ARXR1PGA (0x10) */
+ 0x00, /* REG_ARXL1PGA (0x11) */
+ 0x6c, /* REG_ARXR2PGA (0x12) */
+ 0x6c, /* REG_ARXL2PGA (0x13) */
+ 0x00, /* REG_VRXPGA (0x14) */
+ 0x00, /* REG_VSTPGA (0x15) */
+ 0x00, /* REG_VRX2ARXPGA (0x16) */
+ 0x0c, /* REG_AVDAC_CTL (0x17) */
+ 0x00, /* REG_ARX2VTXPGA (0x18) */
+ 0x00, /* REG_ARXL1_APGA_CTL (0x19) */
+ 0x00, /* REG_ARXR1_APGA_CTL (0x1A) */
+ 0x4b, /* REG_ARXL2_APGA_CTL (0x1B) */
+ 0x4b, /* REG_ARXR2_APGA_CTL (0x1C) */
+ 0x00, /* REG_ATX2ARXPGA (0x1D) */
+ 0x00, /* REG_BT_IF (0x1E) */
+ 0x00, /* REG_BTPGA (0x1F) */
+ 0x00, /* REG_BTSTPGA (0x20) */
+ 0x00, /* REG_EAR_CTL (0x21) */
+ 0x24, /* REG_HS_SEL (0x22) */
+ 0x0a, /* REG_HS_GAIN_SET (0x23) */
+ 0x00, /* REG_HS_POPN_SET (0x24) */
+ 0x00, /* REG_PREDL_CTL (0x25) */
+ 0x00, /* REG_PREDR_CTL (0x26) */
+ 0x00, /* REG_PRECKL_CTL (0x27) */
+ 0x00, /* REG_PRECKR_CTL (0x28) */
+ 0x00, /* REG_HFL_CTL (0x29) */
+ 0x00, /* REG_HFR_CTL (0x2A) */
+ 0x00, /* REG_ALC_CTL (0x2B) */
+ 0x00, /* REG_ALC_SET1 (0x2C) */
+ 0x00, /* REG_ALC_SET2 (0x2D) */
+ 0x00, /* REG_BOOST_CTL (0x2E) */
+ 0x01, /* REG_SOFTVOL_CTL (0x2F) */
+ 0x00, /* REG_DTMF_FREQSEL (0x30) */
+ 0x00, /* REG_DTMF_TONEXT1H (0x31) */
+ 0x00, /* REG_DTMF_TONEXT1L (0x32) */
+ 0x00, /* REG_DTMF_TONEXT2H (0x33) */
+ 0x00, /* REG_DTMF_TONEXT2L (0x34) */
+ 0x00, /* REG_DTMF_TONOFF (0x35) */
+ 0x00, /* REG_DTMF_WANONOFF (0x36) */
+ 0x00, /* REG_I2S_RX_SCRAMBLE_H (0x37) */
+ 0x00, /* REG_I2S_RX_SCRAMBLE_M (0x38) */
+ 0x00, /* REG_I2S_RX_SCRAMBLE_L (0x39) */
+ 0x16, /* REG_APLL_CTL (0x3A) */
+ 0x00, /* REG_DTMF_CTL (0x3B) */
+ 0x00, /* REG_DTMF_PGA_CTL2 (0x3C) */
+ 0x00, /* REG_DTMF_PGA_CTL1 (0x3D) */
+ 0x00, /* REG_MISC_SET_1 (0x3E) */
+ 0x00, /* REG_PCMBTMUX (0x3F) */
+ 0x00, /* not used (0x40) */
+ 0x00, /* not used (0x41) */
+ 0x00, /* not used (0x42) */
+ 0x00, /* REG_RX_PATH_SEL (0x43) */
+ 0x00, /* REG_VDL_APGA_CTL (0x44) */
+ 0x00, /* REG_VIBRA_CTL (0x45) */
+ 0x00, /* REG_VIBRA_SET (0x46) */
+ 0x00, /* REG_VIBRA_PWM_SET (0x47) */
+ 0x00, /* REG_ANAMIC_GAIN (0x48) */
+ 0x00, /* REG_MISC_SET_2 (0x49) */
+};
+
+static void twl4030_dump_registers(void)
+{
+ int i = 0;
+ u8 data;
+
+ printk(KERN_INFO "TWL 4030 Register dump for Audio Module\n");
+
+ for (i = REG_CODEC_MODE; i <= REG_MISC_SET_2; i++) {
+ twl4030_i2c_read_u8(TWL4030_MODULE_AUDIO_VOICE, &data, i);
+ printk(KERN_INFO "Register[0x%02x]=0x%02x\n", i, data);
+ }
+}
+
+struct twl4030_priv {
+ unsigned int dummy;
+};
+
+/*
+ * read twl4030 register cache
+ */
+static inline unsigned int twl4030_read_reg_cache(struct snd_soc_codec *codec,
+ unsigned int reg)
+{
+ u8 *cache = codec->reg_cache;
+
+ return cache[reg];
+}
+
+/*
+ * write twl4030 register cache
+ */
+static inline void twl4030_write_reg_cache(struct snd_soc_codec *codec,
+ u8 reg, u8 value)
+{
+ u8 *cache = codec->reg_cache;
+
+ if (reg >= TWL4030_CACHEREGNUM)
+ return;
+ cache[reg] = value;
+}
+
+/*
+ * write to the twl4030 register space
+ */
+static int twl4030_write(struct snd_soc_codec *codec,
+ unsigned int reg, unsigned int value)
+{
+ twl4030_write_reg_cache(codec, reg, value);
+ return twl4030_i2c_write_u8(TWL4030_MODULE_AUDIO_VOICE, value, reg);
+}
+
+static void twl4030_init_chip(void)
+{
+ unsigned char byte;
+ int i;
+
+ twl4030_i2c_write_u8(TWL4030_MODULE_AUDIO_VOICE,
+ twl4030_reg[REG_CODEC_MODE] & 0xfd, REG_CODEC_MODE);
+
+ udelay(10); /* delay for power settling */
+
+ for (i = REG_OPTION; i <= REG_MISC_SET_2; i++)
+ twl4030_i2c_write_u8(TWL4030_MODULE_AUDIO_VOICE,
+ twl4030_reg[i], i);
+
+ twl4030_i2c_write_u8(TWL4030_MODULE_AUDIO_VOICE,
+ twl4030_reg[REG_CODEC_MODE], REG_CODEC_MODE);
+
+ udelay(10); /* delay for power settling */
+
+ /* initiate offset cancellation */
+ twl4030_i2c_write_u8(TWL4030_MODULE_AUDIO_VOICE,
+ twl4030_reg[REG_ANAMICL] | 0x80, REG_ANAMICL);
+
+ /* wait for offset cancellation to complete */
+ twl4030_i2c_read_u8(TWL4030_MODULE_AUDIO_VOICE, &byte, REG_ANAMICL);
+ while ((byte & 0x80) == 0x80)
+ twl4030_i2c_read_u8(TWL4030_MODULE_AUDIO_VOICE,
+ &byte, REG_ANAMICL);
+
+ twl4030_i2c_write_u8(TWL4030_MODULE_AUDIO_VOICE,
+ twl4030_reg[REG_MISC_SET_1] | 0x02, REG_MISC_SET_1);
+
+}
+
+static const struct snd_kcontrol_new twl4030_snd_controls[] = {
+ SOC_DOUBLE_R("Master Playback Volume",
+ REG_ARXL2PGA, REG_ARXR2PGA,
+ 0, 127, 0),
+ SOC_DOUBLE_R("Capture Volume",
+ REG_ATXL1PGA, REG_ATXR1PGA,
+ 0, 127, 0),
+};
+
+/* add non dapm controls */
+static int twl4030_add_controls(struct snd_soc_codec *codec)
+{
+ int err, i;
+
+ for (i = 0; i < ARRAY_SIZE(twl4030_snd_controls); i++) {
+ err = snd_ctl_add(codec->card,
+ snd_soc_cnew(&twl4030_snd_controls[i],
+ codec, NULL));
+ if (err < 0)
+ return err;
+ }
+
+ return 0;
+}
+
+static const struct snd_soc_dapm_widget twl4030_dapm_widgets[] = {
+ SND_SOC_DAPM_INPUT("INL"),
+ SND_SOC_DAPM_INPUT("INR"),
+
+ SND_SOC_DAPM_OUTPUT("OUTL"),
+ SND_SOC_DAPM_OUTPUT("OUTR"),
+
+ SND_SOC_DAPM_DAC("DACL", "Left Playback", SND_SOC_NOPM, 0, 0),
+ SND_SOC_DAPM_DAC("DACR", "Right Playback", SND_SOC_NOPM, 0, 0),
+
+ SND_SOC_DAPM_ADC("ADCL", "Left Capture", SND_SOC_NOPM, 0, 0),
+ SND_SOC_DAPM_ADC("ADCR", "Right Capture", SND_SOC_NOPM, 0, 0),
+};
+
+static const struct snd_soc_dapm_route intercon[] = {
+ /* outputs */
+ {"OUTL", NULL, "DACL"},
+ {"OUTR", NULL, "DACR"},
+
+ /* inputs */
+ {"ADCL", NULL, "INL"},
+ {"ADCR", NULL, "INR"},
+};
+
+static int twl4030_add_widgets(struct snd_soc_codec *codec)
+{
+ snd_soc_dapm_new_controls(codec, twl4030_dapm_widgets,
+ ARRAY_SIZE(twl4030_dapm_widgets));
+
+ snd_soc_dapm_add_routes(codec, intercon, ARRAY_SIZE(intercon));
+
+ snd_soc_dapm_new_widgets(codec);
+ return 0;
+}
+
+static int twl4030_set_bias_level(struct snd_soc_codec *codec,
+ enum snd_soc_bias_level level)
+{
+
+ printk(KERN_INFO "TWL4030 Audio Codec set bias level\n");
+ switch (level) {
+ case SND_SOC_BIAS_ON:
+ break;
+ case SND_SOC_BIAS_PREPARE:
+ break;
+ case SND_SOC_BIAS_STANDBY:
+ break;
+ case SND_SOC_BIAS_OFF:
+ break;
+ }
+ codec->bias_level = level;
+
+ return 0;
+}
+
+static void twl4030_power_up(struct snd_soc_codec *codec, u8 mode)
+{
+ u8 popn, hsgain;
+
+ twl4030_write(codec, REG_CODEC_MODE, mode & ~CODECPDZ);
+ twl4030_write(codec, REG_CODEC_MODE, mode | CODECPDZ);
+ udelay(10);
+
+ popn = twl4030_read_reg_cache(codec, REG_HS_POPN_SET);
+ popn &= RAMP_DELAY;
+ popn |= VMID_EN | RAMP_DELAY_161MS;
+ twl4030_write(codec, REG_HS_POPN_SET, popn);
+
+ hsgain = HSR_GAIN_0DB | HSL_GAIN_0DB;
+ twl4030_write(codec, REG_HS_GAIN_SET, hsgain);
+
+ popn |= RAMP_EN;
+ twl4030_write(codec, REG_HS_POPN_SET, popn);
+}
+
+static void twl4030_power_down(struct snd_soc_codec *codec)
+{
+ u8 popn, hsgain, mode;
+
+ popn = twl4030_read_reg_cache(codec, REG_HS_POPN_SET);
+ popn &= ~RAMP_EN;
+ twl4030_write(codec, REG_HS_POPN_SET, popn);
+
+ hsgain = HSR_GAIN_PWR_DOWN | HSL_GAIN_PWR_DOWN;
+ twl4030_write(codec, REG_HS_GAIN_SET, hsgain);
+
+ popn &= ~VMID_EN;
+ twl4030_write(codec, REG_HS_POPN_SET, popn);
+
+ mode = twl4030_read_reg_cache(codec, REG_CODEC_MODE);
+ mode &= ~CODECPDZ;
+ twl4030_write(codec, REG_CODEC_MODE, mode);
+ udelay(10);
+}
+
+
+static int twl4030_hw_params(struct snd_pcm_substream *substream,
+ struct snd_pcm_hw_params *params)
+{
+ struct snd_soc_pcm_runtime *rtd = substream->private_data;
+ struct snd_soc_device *socdev = rtd->socdev;
+ struct snd_soc_codec *codec = socdev->codec;
+ struct twl4030_priv *twl4030 = codec->private_data;
+ u8 mode, old_mode, format, old_format;
+
+
+ /* bit rate */
+ old_mode = twl4030_read_reg_cache(codec, REG_CODEC_MODE) & ~CODECPDZ;
+ mode = old_mode;
+ mode &= ~APLL_RATE;
+ switch (params_rate(params)) {
+ case 44100:
+ mode |= APLL_RATE_44100;
+ break;
+ case 48000:
+ mode |= APLL_RATE_48000;
+ break;
+ default:
+ printk(KERN_INFO "TWL4030 hw params: unknown rate %d\n",
+ params_rate(params));
+ return -EINVAL;
+ }
+
+ if (mode != old_mode) {
+ /* change rate and turn codec back on */
+ twl4030_write(codec, REG_CODEC_MODE, mode);
+ mode |= CODECPDZ;
+ twl4030_write(codec, REG_CODEC_MODE, mode);
+ }
+
+ /* sample size */
+ old_format = twl4030_read_reg_cache(codec, REG_AUDIO_IF);
+ format = old_format;
+ format &= ~DATA_WIDTH;
+ switch (params_format(params)) {
+ case SNDRV_PCM_FORMAT_S16_LE:
+ format |= DATA_WIDTH_16S_16W;
+ break;
+ case SNDRV_PCM_FORMAT_S24_LE:
+ format |= DATA_WIDTH_32S_24W;
+ break;
+ default:
+ printk(KERN_INFO "TWL4030 hw params: unknown format %d\n",
+ params_format(params));
+ return -EINVAL;
+ }
+
+ if (format != old_format) {
+
+ /* turn off codec before changing format */
+ mode = twl4030_read_reg_cache(codec, REG_CODEC_MODE);
+ mode &= ~CODECPDZ;
+ twl4030_write(codec, REG_CODEC_MODE, mode);
+
+ /* change format */
+ twl4030_write(codec, REG_AUDIO_IF, format);
+
+ /* turn on codec */
+ mode |= CODECPDZ;
+ twl4030_write(codec, REG_CODEC_MODE, mode);
+ }
+ return 0;
+}
+
+static int twl4030_mute(struct snd_soc_dai *dai, int mute)
+{
+ struct snd_soc_codec *codec = dai->codec;
+
+ u8 ldac_reg = twl4030_read_reg_cache(codec, REG_ARXL2PGA);
+ u8 rdac_reg = twl4030_read_reg_cache(codec, REG_ARXR2PGA);
+
+ if (mute) {
+ twl4030_write(codec, REG_ARXL2PGA, 0x00);
+ twl4030_write(codec, REG_ARXR2PGA, 0x00);
+ twl4030_write_reg_cache(codec, REG_ARXL2PGA, ldac_reg);
+ twl4030_write_reg_cache(codec, REG_ARXR2PGA, rdac_reg);
+ } else {
+ twl4030_write(codec, REG_ARXL2PGA, ldac_reg);
+ twl4030_write(codec, REG_ARXR2PGA, rdac_reg);
+ }
+
+ return 0;
+}
+
+static int twl4030_set_dai_fmt(struct snd_soc_dai *codec_dai,
+ unsigned int fmt)
+{
+ struct snd_soc_codec *codec = codec_dai->codec;
+ struct twl4030_priv *twl4030 = codec->private_data;
+ u8 mode, old_format, format;
+
+ /* get format */
+ old_format = twl4030_read_reg_cache(codec, REG_AUDIO_IF);
+ format = old_format;
+
+ /* set master/slave audio interface */
+ switch (fmt & SND_SOC_DAIFMT_MASTER_MASK) {
+ case SND_SOC_DAIFMT_CBM_CFM:
+ format &= ~(AIF_SLAVE_EN);
+ format |= CLK256FS_EN;
+ break;
+ case SND_SOC_DAIFMT_CBS_CFS:
+ format &= ~(CLK256FS_EN);
+ format |= AIF_SLAVE_EN;
+ break;
+ default:
+ return -EINVAL;
+ }
+
+ /* interface format */
+ format &= ~AIF_FORMAT;
+ switch (fmt & SND_SOC_DAIFMT_FORMAT_MASK) {
+ case SND_SOC_DAIFMT_I2S:
+ /* printk(KERN_INFO "TWL4030 set dai fmt: i2s\n"); */
+ format |= AIF_FORMAT_CODEC;
+ break;
+ default:
+ return -EINVAL;
+ }
+
+ if (format != old_format) {
+
+ /* turn off codec before changing format */
+ mode = twl4030_read_reg_cache(codec, REG_CODEC_MODE);
+ mode &= ~CODECPDZ;
+ twl4030_write(codec, REG_CODEC_MODE, mode);
+
+ /* change format */
+ twl4030_write(codec, REG_AUDIO_IF, format);
+
+ mode |= CODECPDZ;
+ twl4030_write(codec, REG_CODEC_MODE, mode);
+ }
+
+ return 0;
+}
+
+#define TWL4030_RATES (SNDRV_PCM_RATE_44100 | SNDRV_PCM_RATE_48000)
+#define TWL4030_FORMATS (SNDRV_PCM_FMTBIT_S16_LE | SNDRV_PCM_FORMAT_S24_LE)
+
+struct snd_soc_dai twl4030_dai = {
+ .name = "twl4030",
+ .playback = {
+ .stream_name = "Playback",
+ .channels_min = 2,
+ .channels_max = 2,
+ .rates = TWL4030_RATES,
+ .formats = TWL4030_FORMATS,},
+ .capture = {
+ .stream_name = "Capture",
+ .channels_min = 2,
+ .channels_max = 2,
+ .rates = TWL4030_RATES,
+ .formats = TWL4030_FORMATS,},
+ .ops = {
+ .hw_params = twl4030_hw_params,
+ },
+ .dai_ops = {
+ .digital_mute = twl4030_mute,
+ .set_fmt = twl4030_set_dai_fmt,
+ }
+};
+EXPORT_SYMBOL_GPL(twl4030_dai);
+
+static int twl4030_suspend(struct platform_device *pdev, pm_message_t state)
+{
+ struct snd_soc_device *socdev = platform_get_drvdata(pdev);
+ struct snd_soc_codec *codec = socdev->codec;
+
+ printk(KERN_INFO "TWL4030 Audio Codec suspend\n");
+ twl4030_set_bias_level(codec, SND_SOC_BIAS_OFF);
+
+ return 0;
+}
+
+static int twl4030_resume(struct platform_device *pdev)
+{
+ struct snd_soc_device *socdev = platform_get_drvdata(pdev);
+ struct snd_soc_codec *codec = socdev->codec;
+ int i;
+ u16 *cache = codec->reg_cache;
+
+ printk(KERN_INFO "TWL4030 Audio Codec resume\n");
+ /* Sync reg_cache with the hardware */
+ for (i = REG_CODEC_MODE; i <= REG_MISC_SET_2; i++)
+ twl4030_i2c_write_u8(TWL4030_MODULE_AUDIO_VOICE, cache[i], i);
+
+ twl4030_set_bias_level(codec, SND_SOC_BIAS_STANDBY);
+ twl4030_set_bias_level(codec, codec->suspend_bias_level);
+ return 0;
+}
+
+/*
+ * initialize the driver
+ * register the mixer and dsp interfaces with the kernel
+ */
+
+static int twl4030_init(struct snd_soc_device *socdev)
+{
+ struct snd_soc_codec *codec = socdev->codec;
+ int ret = 0;
+
+ printk(KERN_INFO "TWL4030 Audio Codec init \n");
+
+ codec->name = "twl4030";
+ codec->owner = THIS_MODULE;
+ codec->read = twl4030_read_reg_cache;
+ codec->write = twl4030_write;
+ codec->set_bias_level = twl4030_set_bias_level;
+ codec->dai = &twl4030_dai;
+ codec->num_dai = 1;
+ codec->reg_cache_size = sizeof(twl4030_reg);
+ codec->reg_cache = kmemdup(twl4030_reg, sizeof(twl4030_reg),
+ GFP_KERNEL);
+ if (codec->reg_cache == NULL)
+ return -ENOMEM;
+
+ /* register pcms */
+ ret = snd_soc_new_pcms(socdev, SNDRV_DEFAULT_IDX1, SNDRV_DEFAULT_STR1);
+ if (ret < 0) {
+ printk(KERN_ERR "twl4030: failed to create pcms\n");
+ goto pcm_err;
+ }
+
+ twl4030_add_controls(codec);
+ twl4030_add_widgets(codec);
+
+ ret = snd_soc_register_card(socdev);
+ if (ret < 0) {
+ printk(KERN_ERR "twl4030: failed to register card\n");
+ goto card_err;
+ }
+
+ twl4030_init_chip();
+ twl4030_power_up(codec, APLL_RATE_44100 | OPT_MODE);
+
+ return ret;
+
+card_err:
+ printk(KERN_INFO "TWL4030 Audio Codec init card error\n");
+ snd_soc_free_pcms(socdev);
+ snd_soc_dapm_free(socdev);
+pcm_err:
+ printk(KERN_INFO "TWL4030 Audio Codec init pcm error\n");
+ kfree(codec->reg_cache);
+ return ret;
+}
+
+static struct snd_soc_device *twl4030_socdev;
+
+static int twl4030_probe(struct platform_device *pdev)
+{
+ struct snd_soc_device *socdev = platform_get_drvdata(pdev);
+ struct snd_soc_codec *codec;
+ struct twl4030_priv *twl4030;
+
+ codec = kzalloc(sizeof(struct snd_soc_codec), GFP_KERNEL);
+ if (codec == NULL)
+ return -ENOMEM;
+
+ twl4030 = kzalloc(sizeof(struct twl4030_priv), GFP_KERNEL);
+ if (twl4030 == NULL) {
+ kfree(codec);
+ return -ENOMEM;
+ }
+
+ codec->private_data = twl4030;
+ socdev->codec = codec;
+ mutex_init(&codec->mutex);
+ INIT_LIST_HEAD(&codec->dapm_widgets);
+ INIT_LIST_HEAD(&codec->dapm_paths);
+
+ twl4030_socdev = socdev;
+ twl4030_init(socdev);
+
+ return 0;
+}
+
+static int twl4030_remove(struct platform_device *pdev)
+{
+ struct snd_soc_device *socdev = platform_get_drvdata(pdev);
+ struct snd_soc_codec *codec = socdev->codec;
+
+ printk(KERN_INFO "TWL4030 Audio Codec remove\n");
+ kfree(codec->private_data);
+ kfree(codec);
+
+ return 0;
+}
+
+struct snd_soc_codec_device soc_codec_dev_twl4030 = {
+ .probe = twl4030_probe,
+ .remove = twl4030_remove,
+ .suspend = twl4030_suspend,
+ .resume = twl4030_resume,
+};
+EXPORT_SYMBOL_GPL(soc_codec_dev_twl4030);
+
+MODULE_DESCRIPTION("ASoC TWL4030 codec driver");
+MODULE_AUTHOR("Steve Sakoman");
+MODULE_LICENSE("GPL");
diff --git a/sound/soc/codecs/twl4030.h b/sound/soc/codecs/twl4030.h
new file mode 100644
index 0000000..73afbd8
--- /dev/null
+++ b/sound/soc/codecs/twl4030.h
@@ -0,0 +1,152 @@
+/*
+ * ALSA SoC TWL4030 codec driver
+ *
+ * Author: Steve Sakoman, <steve at sakoman.com>
+ *
+ * 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 __TWL4030_AUDIO_H__
+#define __TWL4030_AUDIO_H__
+
+#define REG_CODEC_MODE 0x1
+#define REG_OPTION 0x2
+#define REG_UNKNOWN 0x3
+#define REG_MICBIAS_CTL 0x4
+#define REG_ANAMICL 0x5
+#define REG_ANAMICR 0x6
+#define REG_AVADC_CTL 0x7
+#define REG_ADCMICSEL 0x8
+#define REG_DIGMIXING 0x9
+#define REG_ATXL1PGA 0xA
+#define REG_ATXR1PGA 0xB
+#define REG_AVTXL2PGA 0xC
+#define REG_AVTXR2PGA 0xD
+#define REG_AUDIO_IF 0xE
+#define REG_VOICE_IF 0xF
+#define REG_ARXR1PGA 0x10
+#define REG_ARXL1PGA 0x11
+#define REG_ARXR2PGA 0x12
+#define REG_ARXL2PGA 0x13
+#define REG_VRXPGA 0x14
+#define REG_VSTPGA 0x15
+#define REG_VRX2ARXPGA 0x16
+#define REG_AVDAC_CTL 0x17
+#define REG_ARX2VTXPGA 0x18
+#define REG_ARXL1_APGA_CTL 0x19
+#define REG_ARXR1_APGA_CTL 0x1A
+#define REG_ARXL2_APGA_CTL 0x1B
+#define REG_ARXR2_APGA_CTL 0x1C
+#define REG_ATX2ARXPGA 0x1D
+#define REG_BT_IF 0x1E
+#define REG_BTPGA 0x1F
+#define REG_BTSTPGA 0x20
+#define REG_EAR_CTL 0x21
+#define REG_HS_SEL 0x22
+#define REG_HS_GAIN_SET 0x23
+#define REG_HS_POPN_SET 0x24
+#define REG_PREDL_CTL 0x25
+#define REG_PREDR_CTL 0x26
+#define REG_PRECKL_CTL 0x27
+#define REG_PRECKR_CTL 0x28
+#define REG_HFL_CTL 0x29
+#define REG_HFR_CTL 0x2A
+#define REG_ALC_CTL 0x2B
+#define REG_ALC_SET1 0x2C
+#define REG_ALC_SET2 0x2D
+#define REG_BOOST_CTL 0x2E
+#define REG_SOFTVOL_CTL 0x2F
+#define REG_DTMF_FREQSEL 0x30
+#define REG_DTMF_TONEXT1H 0x31
+#define REG_DTMF_TONEXT1L 0x32
+#define REG_DTMF_TONEXT2H 0x33
+#define REG_DTMF_TONEXT2L 0x34
+#define REG_DTMF_TONOFF 0x35
+#define REG_DTMF_WANONOFF 0x36
+#define REG_I2S_RX_SCRAMBLE_H 0x37
+#define REG_I2S_RX_SCRAMBLE_M 0x38
+#define REG_I2S_RX_SCRAMBLE_L 0x39
+#define REG_APLL_CTL 0x3A
+#define REG_DTMF_CTL 0x3B
+#define REG_DTMF_PGA_CTL2 0x3C
+#define REG_DTMF_PGA_CTL1 0x3D
+#define REG_MISC_SET_1 0x3E
+#define REG_PCMBTMUX 0x3F
+#define REG_RX_PATH_SEL 0x43
+#define REG_VDL_APGA_CTL 0x44
+#define REG_VIBRA_CTL 0x45
+#define REG_VIBRA_SET 0x46
+#define REG_VIBRA_PWM_SET 0x47
+#define REG_ANAMIC_GAIN 0x48
+#define REG_MISC_SET_2 0x49
+
+#define TWL4030_CACHEREGNUM (REG_MISC_SET_2 + 1)
+
+/* Bitfield Definitions */
+
+/* CODEC_MODE (0x01) Fields */
+
+#define APLL_RATE 0xF0
+#define APLL_RATE_8000 0x00
+#define APLL_RATE_11025 0x10
+#define APLL_RATE_12000 0x20
+#define APLL_RATE_16000 0x40
+#define APLL_RATE_22050 0x50
+#define APLL_RATE_24000 0x60
+#define APLL_RATE_32000 0x80
+#define APLL_RATE_44100 0x90
+#define APLL_RATE_48000 0xa0
+#define SEL_16K 0x04
+#define CODECPDZ 0x02
+#define OPT_MODE 0x01
+
+/* AUDIO_IF (0x0E) Fields */
+
+#define AIF_SLAVE_EN 0x80
+#define DATA_WIDTH 0x60
+#define DATA_WIDTH_16S_16W 0x00
+#define DATA_WIDTH_32S_16W 0x40
+#define DATA_WIDTH_32S_24W 0x60
+#define AIF_FORMAT 0x18
+#define AIF_FORMAT_CODEC 0x00
+#define AIF_FORMAT_LEFT 0x08
+#define AIF_FORMAT_RIGHT 0x10
+#define AIF_FORMAT_TDM 0x18
+#define AIF_TRI_EN 0x04
+#define CLK256FS_EN 0x02
+#define AIF_EN 0x01
+
+/* HS_GAIN_SET (0x23) Fields */
+
+#define HSR_GAIN 0x0c
+#define HSR_GAIN_PWR_DOWN 0x00
+#define HSR_GAIN_PLUS_6DB 0x04
+#define HSR_GAIN_0DB 0x08
+#define HSR_GAIN_MINUS_6DB 0x0c
+#define HSL_GAIN 0x0c
+#define HSL_GAIN_PWR_DOWN 0x00
+#define HSL_GAIN_PLUS_6DB 0x01
+#define HSL_GAIN_0DB 0x02
+#define HSL_GAIN_MINUS_6DB 0x03
+
+/* HS_POPN_SET (0x24) Fields */
+
+#define VMID_EN 0x40
+#define EXTMUTE 0x20
+#define RAMP_DELAY 0x1C
+#define RAMP_DELAY_20MS 0x00
+#define RAMP_DELAY_40MS 0x04
+#define RAMP_DELAY_81MS 0x08
+#define RAMP_DELAY_161MS 0x0c
+#define RAMP_DELAY_323MS 0x10
+#define RAMP_DELAY_645MS 0x14
+#define RAMP_DELAY_1291MS 0x18
+#define RAMP_DELAY_2581MS 0x1c
+#define RAMP_EN 0x02
+
+extern struct snd_soc_dai twl4030_dai;
+extern struct snd_soc_codec_device soc_codec_dev_twl4030;
+
+#endif /* End of __TWL4030_AUDIO_H__ */
--
1.5.4.5
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