]> pilppa.com Git - linux-2.6-omap-h63xx.git/commitdiff
ALSA: ASoC: Add TLV320AIC23 codec driver
authorArun KS <arunks@mistralsolutions.com>
Thu, 2 Oct 2008 09:15:49 +0000 (14:45 +0530)
committerTakashi Iwai <tiwai@suse.de>
Mon, 13 Oct 2008 00:16:48 +0000 (02:16 +0200)
ASoC codec driver for TLV320AIC23 device

Signed-off-by: Arun KS <arunks@mistralsolutions.com>
Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
Signed-off-by: Takashi Iwai <tiwai@suse.de>
sound/soc/codecs/Kconfig
sound/soc/codecs/Makefile
sound/soc/codecs/tlv320aic23.c [new file with mode: 0644]
sound/soc/codecs/tlv320aic23.h [new file with mode: 0644]

index 0507fcf66084b3cdbbcdcf80f2465ac72c5ebdef..bdead2dc99680f9911113d487b331cec059850d2 100644 (file)
@@ -7,6 +7,7 @@ config SND_SOC_ALL_CODECS
        select SND_SOC_AK4535
        select SND_SOC_CS4270
        select SND_SOC_SSM2602
+       select SND_SOC_TLV320AIC23
        select SND_SOC_TLV320AIC26
        select SND_SOC_TLV320AIC3X
        select SND_SOC_UDA1380
@@ -62,6 +63,10 @@ config SND_SOC_CS4270_VD33_ERRATA
 config SND_SOC_SSM2602
        tristate
 
+config SND_SOC_TLV320AIC23
+       tristate
+       depends on I2C
+
 config SND_SOC_TLV320AIC26
        tristate "TI TLV320AIC26 Codec support"
        depends on SND_SOC && SPI
index 07318445a1fd7c3c8373410994673c5014a4885b..90f0a585fc70e1f5a4d9a9be1b8514a22100917a 100644 (file)
@@ -4,6 +4,7 @@ snd-soc-ad73311-objs := ad73311.o
 snd-soc-ak4535-objs := ak4535.o
 snd-soc-cs4270-objs := cs4270.o
 snd-soc-ssm2602-objs := ssm2602.o
+snd-soc-tlv320aic23-objs := tlv320aic23.o
 snd-soc-tlv320aic26-objs := tlv320aic26.o
 snd-soc-tlv320aic3x-objs := tlv320aic3x.o
 snd-soc-uda1380-objs := uda1380.o
@@ -25,6 +26,7 @@ obj-$(CONFIG_SND_SOC_AD73311) += snd-soc-ad73311.o
 obj-$(CONFIG_SND_SOC_AK4535)   += snd-soc-ak4535.o
 obj-$(CONFIG_SND_SOC_CS4270)   += snd-soc-cs4270.o
 obj-$(CONFIG_SND_SOC_SSM2602)  += snd-soc-ssm2602.o
+obj-$(CONFIG_SND_SOC_TLV320AIC23)      += snd-soc-tlv320aic23.o
 obj-$(CONFIG_SND_SOC_TLV320AIC26)      += snd-soc-tlv320aic26.o
 obj-$(CONFIG_SND_SOC_TLV320AIC3X)      += snd-soc-tlv320aic3x.o
 obj-$(CONFIG_SND_SOC_UDA1380)  += snd-soc-uda1380.o
diff --git a/sound/soc/codecs/tlv320aic23.c b/sound/soc/codecs/tlv320aic23.c
new file mode 100644 (file)
index 0000000..c2d35e9
--- /dev/null
@@ -0,0 +1,670 @@
+/*
+ * ALSA SoC TLV320AIC23 codec driver
+ *
+ * Author:      Arun KS, <arunks@mistralsolutions.com>
+ * Copyright:   (C) 2008 Mistral Solutions Pvt Ltd.,
+ *
+ * Based on sound/soc/codecs/wm8731.c by Richard Purdie
+ *
+ * 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.
+ *
+ * Notes:
+ *  The AIC23 is a driver for a low power stereo audio
+ *  codec tlv320aic23
+ *
+ *  The machine layer should disable unsupported inputs/outputs by
+ *  snd_soc_dapm_disable_pin(codec, "LHPOUT"), etc.
+ */
+
+#include <linux/module.h>
+#include <linux/moduleparam.h>
+#include <linux/init.h>
+#include <linux/delay.h>
+#include <linux/pm.h>
+#include <linux/i2c.h>
+#include <linux/platform_device.h>
+#include <sound/core.h>
+#include <sound/pcm.h>
+#include <sound/pcm_params.h>
+#include <sound/soc.h>
+#include <sound/soc-dapm.h>
+#include <sound/tlv.h>
+#include <sound/initval.h>
+
+#include "tlv320aic23.h"
+
+#define AUDIO_NAME "tlv320aic23"
+#define AIC23_VERSION "0.1"
+
+struct tlv320aic23_srate_reg_info {
+       u32 sample_rate;
+       u8 control;             /* SR3, SR2, SR1, SR0 and BOSR */
+       u8 divider;             /* if 0 CLKIN = MCLK, if 1 CLKIN = MCLK/2 */
+};
+
+/*
+ * AIC23 register cache
+ */
+static const u16 tlv320aic23_reg[] = {
+       0x0097, 0x0097, 0x00F9, 0x00F9, /* 0 */
+       0x001A, 0x0004, 0x0007, 0x0001, /* 4 */
+       0x0020, 0x0000, 0x0000, 0x0000, /* 8 */
+       0x0000, 0x0000, 0x0000, 0x0000, /* 12 */
+};
+
+/*
+ * read tlv320aic23 register cache
+ */
+static inline unsigned int tlv320aic23_read_reg_cache(struct snd_soc_codec
+                                                     *codec, unsigned int reg)
+{
+       u16 *cache = codec->reg_cache;
+       if (reg >= ARRAY_SIZE(tlv320aic23_reg))
+               return -1;
+       return cache[reg];
+}
+
+/*
+ * write tlv320aic23 register cache
+ */
+static inline void tlv320aic23_write_reg_cache(struct snd_soc_codec *codec,
+                                              u8 reg, u16 value)
+{
+       u16 *cache = codec->reg_cache;
+       if (reg >= ARRAY_SIZE(tlv320aic23_reg))
+               return;
+       cache[reg] = value;
+}
+
+/*
+ * write to the tlv320aic23 register space
+ */
+static int tlv320aic23_write(struct snd_soc_codec *codec, unsigned int reg,
+                            unsigned int value)
+{
+
+       u8 data;
+
+       /* TLV320AIC23 has 7 bit address and 9 bits of data
+        * so we need to switch one data bit into reg and rest
+        * of data into val
+        */
+
+       if ((reg < 0 || reg > 9) && (reg != 15)) {
+               printk(KERN_WARNING "%s Invalid register R%d\n", __func__, reg);
+               return -1;
+       }
+
+       data = (reg << 1) | (value >> 8 & 0x01);
+
+       tlv320aic23_write_reg_cache(codec, reg, value);
+
+       if (codec->hw_write(codec->control_data, data,
+                           (value & 0xff)) == 0)
+               return 0;
+
+       printk(KERN_ERR "%s cannot write %03x to register R%d\n", __func__,
+              value, reg);
+
+       return -EIO;
+}
+
+static const char *rec_src_text[] = { "Line", "Mic" };
+static const char *deemph_text[] = {"None", "32Khz", "44.1Khz", "48Khz"};
+static const char *sidetone_text[] = {"-6db", "-9db", "-12db", "-18db", "0db"};
+
+static const struct soc_enum rec_src_enum =
+       SOC_ENUM_SINGLE(TLV320AIC23_ANLG, 2, 2, rec_src_text);
+
+static const struct snd_kcontrol_new tlv320aic23_rec_src_mux_controls =
+SOC_DAPM_ENUM("Input Select", rec_src_enum);
+
+static const struct soc_enum tlv320aic23_rec_src =
+       SOC_ENUM_SINGLE(TLV320AIC23_ANLG, 2, 2, rec_src_text);
+static const struct soc_enum tlv320aic23_deemph =
+       SOC_ENUM_SINGLE(TLV320AIC23_DIGT, 1, 4, deemph_text);
+static const struct soc_enum tlv320aic23_sidetone =
+       SOC_ENUM_SINGLE(TLV320AIC23_ANLG, 6, 5, sidetone_text);
+
+static const DECLARE_TLV_DB_SCALE(out_gain_tlv, -12100, 100, 0);
+static const DECLARE_TLV_DB_SCALE(input_gain_tlv, -1725, 75, 0);
+
+static const struct snd_kcontrol_new tlv320aic23_snd_controls[] = {
+       SOC_DOUBLE_R_TLV("Digital Playback Volume", TLV320AIC23_LCHNVOL,
+                        TLV320AIC23_RCHNVOL, 0, 127, 0, out_gain_tlv),
+       SOC_SINGLE("Digital Playback Switch", TLV320AIC23_DIGT, 3, 1, 1),
+       SOC_DOUBLE_R("Line Input Switch", TLV320AIC23_LINVOL,
+                    TLV320AIC23_RINVOL, 7, 1, 0),
+       SOC_DOUBLE_R_TLV("Line Input Volume", TLV320AIC23_LINVOL,
+                        TLV320AIC23_RINVOL, 0, 31, 0, input_gain_tlv),
+       SOC_SINGLE("Mic Input Switch", TLV320AIC23_ANLG, 1, 1, 1),
+       SOC_SINGLE("Mic Booster Switch", TLV320AIC23_ANLG, 0, 1, 0),
+       SOC_ENUM("Sidetone Gain", tlv320aic23_sidetone),
+       SOC_ENUM("Playback De-emphasis", tlv320aic23_deemph),
+};
+
+/* add non dapm controls */
+static int tlv320aic23_add_controls(struct snd_soc_codec *codec)
+{
+
+       int err, i;
+
+       for (i = 0; i < ARRAY_SIZE(tlv320aic23_snd_controls); i++) {
+               err = snd_ctl_add(codec->card,
+                                 snd_soc_cnew(&tlv320aic23_snd_controls[i],
+                                              codec, NULL));
+               if (err < 0)
+                       return err;
+       }
+
+       return 0;
+
+}
+
+/* PGA Mixer controls for Line and Mic switch */
+static const struct snd_kcontrol_new tlv320aic23_output_mixer_controls[] = {
+       SOC_DAPM_SINGLE("Line Bypass Switch", TLV320AIC23_ANLG, 3, 1, 0),
+       SOC_DAPM_SINGLE("Mic Sidetone Switch", TLV320AIC23_ANLG, 5, 1, 0),
+       SOC_DAPM_SINGLE("Playback Switch", TLV320AIC23_ANLG, 4, 1, 0),
+};
+
+static const struct snd_soc_dapm_widget tlv320aic23_dapm_widgets[] = {
+       SND_SOC_DAPM_DAC("DAC", "Playback", TLV320AIC23_PWR, 3, 1),
+       SND_SOC_DAPM_ADC("ADC", "Capture", TLV320AIC23_PWR, 2, 1),
+       SND_SOC_DAPM_MUX("Capture Source", SND_SOC_NOPM, 0, 0,
+                        &tlv320aic23_rec_src_mux_controls),
+       SND_SOC_DAPM_MIXER("Output Mixer", TLV320AIC23_PWR, 4, 1,
+                          &tlv320aic23_output_mixer_controls[0],
+                          ARRAY_SIZE(tlv320aic23_output_mixer_controls)),
+       SND_SOC_DAPM_PGA("Line Input", TLV320AIC23_PWR, 0, 1, NULL, 0),
+       SND_SOC_DAPM_PGA("Mic Input", TLV320AIC23_PWR, 1, 1, NULL, 0),
+
+       SND_SOC_DAPM_OUTPUT("LHPOUT"),
+       SND_SOC_DAPM_OUTPUT("RHPOUT"),
+       SND_SOC_DAPM_OUTPUT("LOUT"),
+       SND_SOC_DAPM_OUTPUT("ROUT"),
+
+       SND_SOC_DAPM_INPUT("LLINEIN"),
+       SND_SOC_DAPM_INPUT("RLINEIN"),
+
+       SND_SOC_DAPM_INPUT("MICIN"),
+};
+
+static const struct snd_soc_dapm_route intercon[] = {
+       /* Output Mixer */
+       {"Output Mixer", "Line Bypass Switch", "Line Input"},
+       {"Output Mixer", "Playback Switch", "DAC"},
+       {"Output Mixer", "Mic Sidetone Switch", "Mic Input"},
+
+       /* Outputs */
+       {"RHPOUT", NULL, "Output Mixer"},
+       {"LHPOUT", NULL, "Output Mixer"},
+       {"LOUT", NULL, "Output Mixer"},
+       {"ROUT", NULL, "Output Mixer"},
+
+       /* Inputs */
+       {"Line Input", "NULL", "LLINEIN"},
+       {"Line Input", "NULL", "RLINEIN"},
+
+       {"Mic Input", "NULL", "MICIN"},
+
+       /* input mux */
+       {"Capture Source", "Line", "Line Input"},
+       {"Capture Source", "Mic", "Mic Input"},
+       {"ADC", NULL, "Capture Source"},
+
+};
+
+/* tlv320aic23 related */
+static const struct tlv320aic23_srate_reg_info srate_reg_info[] = {
+       {4000, 0x06, 1},        /*  4000 */
+       {8000, 0x06, 0},        /*  8000 */
+       {16000, 0x0C, 1},       /* 16000 */
+       {22050, 0x11, 1},       /* 22050 */
+       {24000, 0x00, 1},       /* 24000 */
+       {32000, 0x0C, 0},       /* 32000 */
+       {44100, 0x11, 0},       /* 44100 */
+       {48000, 0x00, 0},       /* 48000 */
+       {88200, 0x1F, 0},       /* 88200 */
+       {96000, 0x0E, 0},       /* 96000 */
+};
+
+static int tlv320aic23_add_widgets(struct snd_soc_codec *codec)
+{
+       snd_soc_dapm_new_controls(codec, tlv320aic23_dapm_widgets,
+                                 ARRAY_SIZE(tlv320aic23_dapm_widgets));
+
+       /* set up audio path interconnects */
+       snd_soc_dapm_add_routes(codec, intercon, ARRAY_SIZE(intercon));
+
+       snd_soc_dapm_new_widgets(codec);
+       return 0;
+}
+
+static int tlv320aic23_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;
+       u16 iface_reg, data;
+       u8 count = 0;
+
+       iface_reg =
+           tlv320aic23_read_reg_cache(codec,
+                                      TLV320AIC23_DIGT_FMT) & ~(0x03 << 2);
+
+       /* Search for the right sample rate */
+       /* Verify what happens if the rate is not supported
+        * now it goes to 96Khz */
+       while ((srate_reg_info[count].sample_rate != params_rate(params)) &&
+              (count < ARRAY_SIZE(srate_reg_info))) {
+               count++;
+       }
+
+       data =  (srate_reg_info[count].divider << TLV320AIC23_CLKIN_SHIFT) |
+               (srate_reg_info[count]. control << TLV320AIC23_BOSR_SHIFT) |
+               TLV320AIC23_USB_CLK_ON;
+
+       tlv320aic23_write(codec, TLV320AIC23_SRATE, data);
+
+       switch (params_format(params)) {
+       case SNDRV_PCM_FORMAT_S16_LE:
+               break;
+       case SNDRV_PCM_FORMAT_S20_3LE:
+               iface_reg |= (0x01 << 2);
+               break;
+       case SNDRV_PCM_FORMAT_S24_LE:
+               iface_reg |= (0x02 << 2);
+               break;
+       case SNDRV_PCM_FORMAT_S32_LE:
+               iface_reg |= (0x03 << 2);
+               break;
+       }
+       tlv320aic23_write(codec, TLV320AIC23_DIGT_FMT, iface_reg);
+
+       return 0;
+}
+
+static int tlv320aic23_pcm_prepare(struct snd_pcm_substream *substream)
+{
+       struct snd_soc_pcm_runtime *rtd = substream->private_data;
+       struct snd_soc_device *socdev = rtd->socdev;
+       struct snd_soc_codec *codec = socdev->codec;
+
+       /* set active */
+       tlv320aic23_write(codec, TLV320AIC23_ACTIVE, 0x0001);
+
+       return 0;
+}
+
+static void tlv320aic23_shutdown(struct snd_pcm_substream *substream)
+{
+       struct snd_soc_pcm_runtime *rtd = substream->private_data;
+       struct snd_soc_device *socdev = rtd->socdev;
+       struct snd_soc_codec *codec = socdev->codec;
+
+       /* deactivate */
+       if (!codec->active) {
+               udelay(50);
+               tlv320aic23_write(codec, TLV320AIC23_ACTIVE, 0x0);
+       }
+}
+
+static int tlv320aic23_mute(struct snd_soc_dai *dai, int mute)
+{
+       struct snd_soc_codec *codec = dai->codec;
+       u16 reg;
+
+       reg = tlv320aic23_read_reg_cache(codec, TLV320AIC23_DIGT);
+       if (mute)
+               reg |= TLV320AIC23_DACM_MUTE;
+
+       else
+               reg &= ~TLV320AIC23_DACM_MUTE;
+
+       tlv320aic23_write(codec, TLV320AIC23_DIGT, reg);
+
+       return 0;
+}
+
+static int tlv320aic23_set_dai_fmt(struct snd_soc_dai *codec_dai,
+                                  unsigned int fmt)
+{
+       struct snd_soc_codec *codec = codec_dai->codec;
+       u16 iface_reg;
+
+       iface_reg =
+           tlv320aic23_read_reg_cache(codec, TLV320AIC23_DIGT_FMT) & (~0x03);
+
+       /* set master/slave audio interface */
+       switch (fmt & SND_SOC_DAIFMT_MASTER_MASK) {
+       case SND_SOC_DAIFMT_CBM_CFM:
+               iface_reg |= TLV320AIC23_MS_MASTER;
+               break;
+       case SND_SOC_DAIFMT_CBS_CFS:
+               break;
+       default:
+               return -EINVAL;
+
+       }
+
+       /* interface format */
+       switch (fmt & SND_SOC_DAIFMT_FORMAT_MASK) {
+       case SND_SOC_DAIFMT_I2S:
+               iface_reg |= TLV320AIC23_FOR_I2S;
+               break;
+       case SND_SOC_DAIFMT_DSP_A:
+               iface_reg |= TLV320AIC23_FOR_DSP;
+               break;
+       case SND_SOC_DAIFMT_RIGHT_J:
+               break;
+       case SND_SOC_DAIFMT_LEFT_J:
+               iface_reg |= TLV320AIC23_FOR_LJUST;
+               break;
+       default:
+               return -EINVAL;
+
+       }
+
+       tlv320aic23_write(codec, TLV320AIC23_DIGT_FMT, iface_reg);
+
+       return 0;
+}
+
+static int tlv320aic23_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;
+
+       switch (freq) {
+       case 12000000:
+               return 0;
+       }
+       return -EINVAL;
+}
+
+static int tlv320aic23_set_bias_level(struct snd_soc_codec *codec,
+                                     enum snd_soc_bias_level level)
+{
+       u16 reg = tlv320aic23_read_reg_cache(codec, TLV320AIC23_PWR) & 0xff7f;
+
+       switch (level) {
+       case SND_SOC_BIAS_ON:
+               /* vref/mid, osc on, dac unmute */
+               tlv320aic23_write(codec, TLV320AIC23_PWR, reg);
+               break;
+       case SND_SOC_BIAS_PREPARE:
+               break;
+       case SND_SOC_BIAS_STANDBY:
+               /* everything off except vref/vmid, */
+               tlv320aic23_write(codec, TLV320AIC23_PWR, reg | 0x0040);
+               break;
+       case SND_SOC_BIAS_OFF:
+               /* everything off, dac mute, inactive */
+               tlv320aic23_write(codec, TLV320AIC23_ACTIVE, 0x0);
+               tlv320aic23_write(codec, TLV320AIC23_PWR, 0xffff);
+               break;
+       }
+       codec->bias_level = level;
+       return 0;
+}
+
+#define AIC23_RATES    SNDRV_PCM_RATE_8000_96000
+#define AIC23_FORMATS  (SNDRV_PCM_FMTBIT_S16_LE | SNDRV_PCM_FMTBIT_S20_3LE | \
+                        SNDRV_PCM_FMTBIT_S24_3LE | SNDRV_PCM_FMTBIT_S32_LE)
+
+struct snd_soc_dai tlv320aic23_dai = {
+       .name = "tlv320aic23",
+       .playback = {
+                    .stream_name = "Playback",
+                    .channels_min = 2,
+                    .channels_max = 2,
+                    .rates = AIC23_RATES,
+                    .formats = AIC23_FORMATS,},
+       .capture = {
+                   .stream_name = "Capture",
+                   .channels_min = 2,
+                   .channels_max = 2,
+                   .rates = AIC23_RATES,
+                   .formats = AIC23_FORMATS,},
+       .ops = {
+               .prepare = tlv320aic23_pcm_prepare,
+               .hw_params = tlv320aic23_hw_params,
+               .shutdown = tlv320aic23_shutdown,
+               },
+       .dai_ops = {
+                   .digital_mute = tlv320aic23_mute,
+                   .set_fmt = tlv320aic23_set_dai_fmt,
+                   .set_sysclk = tlv320aic23_set_dai_sysclk,
+                   }
+};
+EXPORT_SYMBOL_GPL(tlv320aic23_dai);
+
+static int tlv320aic23_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;
+
+       tlv320aic23_write(codec, TLV320AIC23_ACTIVE, 0x0);
+       tlv320aic23_set_bias_level(codec, SND_SOC_BIAS_OFF);
+
+       return 0;
+}
+
+static int tlv320aic23_resume(struct platform_device *pdev)
+{
+       struct snd_soc_device *socdev = platform_get_drvdata(pdev);
+       struct snd_soc_codec *codec = socdev->codec;
+       int i;
+       u16 reg;
+
+       /* Sync reg_cache with the hardware */
+       for (reg = 0; reg < ARRAY_SIZE(tlv320aic23_reg); i++) {
+               u16 val = tlv320aic23_read_reg_cache(codec, reg);
+               tlv320aic23_write(codec, reg, val);
+       }
+
+       tlv320aic23_set_bias_level(codec, SND_SOC_BIAS_STANDBY);
+       tlv320aic23_set_bias_level(codec, codec->suspend_bias_level);
+
+       return 0;
+}
+
+/*
+ * initialise the AIC23 driver
+ * register the mixer and dsp interfaces with the kernel
+ */
+static int tlv320aic23_init(struct snd_soc_device *socdev)
+{
+       struct snd_soc_codec *codec = socdev->codec;
+       int ret = 0;
+       u16 reg;
+
+       codec->name = "tlv320aic23";
+       codec->owner = THIS_MODULE;
+       codec->read = tlv320aic23_read_reg_cache;
+       codec->write = tlv320aic23_write;
+       codec->set_bias_level = tlv320aic23_set_bias_level;
+       codec->dai = &tlv320aic23_dai;
+       codec->num_dai = 1;
+       codec->reg_cache_size = ARRAY_SIZE(tlv320aic23_reg);
+       codec->reg_cache =
+           kmemdup(tlv320aic23_reg, sizeof(tlv320aic23_reg), GFP_KERNEL);
+       if (codec->reg_cache == NULL)
+               return -ENOMEM;
+
+       /* Reset codec */
+       tlv320aic23_write(codec, TLV320AIC23_RESET, 0);
+
+       /* register pcms */
+       ret = snd_soc_new_pcms(socdev, SNDRV_DEFAULT_IDX1, SNDRV_DEFAULT_STR1);
+       if (ret < 0) {
+               printk(KERN_ERR "tlv320aic23: failed to create pcms\n");
+               goto pcm_err;
+       }
+
+       /* power on device */
+       tlv320aic23_set_bias_level(codec, SND_SOC_BIAS_STANDBY);
+
+       tlv320aic23_write(codec, TLV320AIC23_DIGT, TLV320AIC23_DEEMP_44K);
+
+       /* Unmute input */
+       reg = tlv320aic23_read_reg_cache(codec, TLV320AIC23_LINVOL);
+       tlv320aic23_write(codec, TLV320AIC23_LINVOL,
+                         (reg & (~TLV320AIC23_LIM_MUTED)) |
+                         (TLV320AIC23_LRS_ENABLED));
+
+       reg = tlv320aic23_read_reg_cache(codec, TLV320AIC23_RINVOL);
+       tlv320aic23_write(codec, TLV320AIC23_RINVOL,
+                         (reg & (~TLV320AIC23_LIM_MUTED)) |
+                         TLV320AIC23_LRS_ENABLED);
+
+       reg = tlv320aic23_read_reg_cache(codec, TLV320AIC23_ANLG);
+       tlv320aic23_write(codec, TLV320AIC23_ANLG,
+                        (reg) & (~TLV320AIC23_BYPASS_ON) &
+                        (~TLV320AIC23_MICM_MUTED));
+
+       /* Default output volume */
+       tlv320aic23_write(codec, TLV320AIC23_LCHNVOL,
+                         TLV320AIC23_DEFAULT_OUT_VOL &
+                         TLV320AIC23_OUT_VOL_MASK);
+       tlv320aic23_write(codec, TLV320AIC23_RCHNVOL,
+                         TLV320AIC23_DEFAULT_OUT_VOL &
+                         TLV320AIC23_OUT_VOL_MASK);
+
+       tlv320aic23_write(codec, TLV320AIC23_ACTIVE, 0x1);
+
+       tlv320aic23_add_controls(codec);
+       tlv320aic23_add_widgets(codec);
+       ret = snd_soc_register_card(socdev);
+       if (ret < 0) {
+               printk(KERN_ERR "tlv320aic23: failed to register card\n");
+               goto card_err;
+       }
+
+       return ret;
+
+card_err:
+       snd_soc_free_pcms(socdev);
+       snd_soc_dapm_free(socdev);
+pcm_err:
+       kfree(codec->reg_cache);
+       return ret;
+}
+static struct snd_soc_device *tlv320aic23_socdev;
+
+#if defined(CONFIG_I2C) || defined(CONFIG_I2C_MODULE)
+/*
+ * If the i2c layer weren't so broken, we could pass this kind of data
+ * around
+ */
+static int tlv320aic23_codec_probe(struct i2c_client *i2c,
+                                  const struct i2c_device_id *i2c_id)
+{
+       struct snd_soc_device *socdev = tlv320aic23_socdev;
+       struct snd_soc_codec *codec = socdev->codec;
+       int ret;
+
+       if (!i2c_check_functionality(i2c->adapter, I2C_FUNC_SMBUS_BYTE_DATA))
+               return -EINVAL;
+
+       i2c_set_clientdata(i2c, codec);
+       codec->control_data = i2c;
+
+       ret = tlv320aic23_init(socdev);
+       if (ret < 0) {
+               printk(KERN_ERR "tlv320aic23: failed to initialise AIC23\n");
+               goto err;
+       }
+       return ret;
+
+err:
+       kfree(codec);
+       kfree(i2c);
+       return ret;
+}
+static int __exit tlv320aic23_i2c_remove(struct i2c_client *i2c)
+{
+       put_device(&i2c->dev);
+       return 0;
+}
+
+static const struct i2c_device_id tlv320aic23_id[] = {
+       {"tlv320aic23", 0},
+       {}
+};
+
+MODULE_DEVICE_TABLE(i2c, tlv320aic23_id);
+
+static struct i2c_driver tlv320aic23_i2c_driver = {
+       .driver = {
+                  .name = "tlv320aic23",
+                  },
+       .probe = tlv320aic23_codec_probe,
+       .remove = __exit_p(tlv320aic23_i2c_remove),
+       .id_table = tlv320aic23_id,
+};
+
+#endif
+
+static int tlv320aic23_probe(struct platform_device *pdev)
+{
+       struct snd_soc_device *socdev = platform_get_drvdata(pdev);
+       struct snd_soc_codec *codec;
+       int ret = 0;
+
+       printk(KERN_INFO "AIC23 Audio Codec %s\n", AIC23_VERSION);
+
+       codec = kzalloc(sizeof(struct snd_soc_codec), GFP_KERNEL);
+       if (codec == NULL)
+               return -ENOMEM;
+
+       socdev->codec = codec;
+       mutex_init(&codec->mutex);
+       INIT_LIST_HEAD(&codec->dapm_widgets);
+       INIT_LIST_HEAD(&codec->dapm_paths);
+
+       tlv320aic23_socdev = socdev;
+#if defined(CONFIG_I2C) || defined(CONFIG_I2C_MODULE)
+       codec->hw_write = (hw_write_t) i2c_smbus_write_byte_data;
+       codec->hw_read = NULL;
+       ret = i2c_add_driver(&tlv320aic23_i2c_driver);
+       if (ret != 0)
+               printk(KERN_ERR "can't add i2c driver");
+#endif
+       return ret;
+}
+
+static int tlv320aic23_remove(struct platform_device *pdev)
+{
+       struct snd_soc_device *socdev = platform_get_drvdata(pdev);
+       struct snd_soc_codec *codec = socdev->codec;
+
+       if (codec->control_data)
+               tlv320aic23_set_bias_level(codec, SND_SOC_BIAS_OFF);
+
+       snd_soc_free_pcms(socdev);
+       snd_soc_dapm_free(socdev);
+#if defined(CONFIG_I2C) || defined(CONFIG_I2C_MODULE)
+       i2c_del_driver(&tlv320aic23_i2c_driver);
+#endif
+       kfree(codec->reg_cache);
+       kfree(codec);
+
+       return 0;
+}
+struct snd_soc_codec_device soc_codec_dev_tlv320aic23 = {
+       .probe = tlv320aic23_probe,
+       .remove = tlv320aic23_remove,
+       .suspend = tlv320aic23_suspend,
+       .resume = tlv320aic23_resume,
+};
+EXPORT_SYMBOL_GPL(soc_codec_dev_tlv320aic23);
+
+MODULE_DESCRIPTION("ASoC TLV320AIC23 codec driver");
+MODULE_AUTHOR("Arun KS <arunks@mistralsolutions.com>");
+MODULE_LICENSE("GPL");
diff --git a/sound/soc/codecs/tlv320aic23.h b/sound/soc/codecs/tlv320aic23.h
new file mode 100644 (file)
index 0000000..79d1faf
--- /dev/null
@@ -0,0 +1,122 @@
+/*
+ * ALSA SoC TLV320AIC23 codec driver
+ *
+ * Author:      Arun KS, <arunks@mistralsolutions.com>
+ * Copyright:   (C) 2008 Mistral Solutions Pvt Ltd
+ *
+ * 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 _TLV320AIC23_H
+#define _TLV320AIC23_H
+
+/* Codec TLV320AIC23 */
+#define TLV320AIC23_LINVOL             0x00
+#define TLV320AIC23_RINVOL             0x01
+#define TLV320AIC23_LCHNVOL            0x02
+#define TLV320AIC23_RCHNVOL            0x03
+#define TLV320AIC23_ANLG               0x04
+#define TLV320AIC23_DIGT               0x05
+#define TLV320AIC23_PWR                        0x06
+#define TLV320AIC23_DIGT_FMT           0x07
+#define TLV320AIC23_SRATE              0x08
+#define TLV320AIC23_ACTIVE             0x09
+#define TLV320AIC23_RESET              0x0F
+
+/* Left (right) line input volume control register */
+#define TLV320AIC23_LRS_ENABLED                0x0100
+#define TLV320AIC23_LIM_MUTED          0x0080
+#define TLV320AIC23_LIV_DEFAULT                0x0017
+#define TLV320AIC23_LIV_MAX            0x001f
+#define TLV320AIC23_LIV_MIN            0x0000
+
+/* Left (right) channel headphone volume control register */
+#define TLV320AIC23_LZC_ON             0x0080
+#define TLV320AIC23_LHV_DEFAULT                0x0079
+#define TLV320AIC23_LHV_MAX            0x007f
+#define TLV320AIC23_LHV_MIN            0x0000
+
+/* Analog audio path control register */
+#define TLV320AIC23_STA_REG(x)         ((x)<<6)
+#define TLV320AIC23_STE_ENABLED                0x0020
+#define TLV320AIC23_DAC_SELECTED       0x0010
+#define TLV320AIC23_BYPASS_ON          0x0008
+#define TLV320AIC23_INSEL_MIC          0x0004
+#define TLV320AIC23_MICM_MUTED         0x0002
+#define TLV320AIC23_MICB_20DB          0x0001
+
+/* Digital audio path control register */
+#define TLV320AIC23_DACM_MUTE          0x0008
+#define TLV320AIC23_DEEMP_32K          0x0002
+#define TLV320AIC23_DEEMP_44K          0x0004
+#define TLV320AIC23_DEEMP_48K          0x0006
+#define TLV320AIC23_ADCHP_ON           0x0001
+
+/* Power control down register */
+#define TLV320AIC23_DEVICE_PWR_OFF     0x0080
+#define TLV320AIC23_CLK_OFF            0x0040
+#define TLV320AIC23_OSC_OFF            0x0020
+#define TLV320AIC23_OUT_OFF            0x0010
+#define TLV320AIC23_DAC_OFF            0x0008
+#define TLV320AIC23_ADC_OFF            0x0004
+#define TLV320AIC23_MIC_OFF            0x0002
+#define TLV320AIC23_LINE_OFF           0x0001
+
+/* Digital audio interface register */
+#define TLV320AIC23_MS_MASTER          0x0040
+#define TLV320AIC23_LRSWAP_ON          0x0020
+#define TLV320AIC23_LRP_ON             0x0010
+#define TLV320AIC23_IWL_16             0x0000
+#define TLV320AIC23_IWL_20             0x0004
+#define TLV320AIC23_IWL_24             0x0008
+#define TLV320AIC23_IWL_32             0x000C
+#define TLV320AIC23_FOR_I2S            0x0002
+#define TLV320AIC23_FOR_DSP            0x0003
+#define TLV320AIC23_FOR_LJUST          0x0001
+
+/* Sample rate control register */
+#define TLV320AIC23_CLKOUT_HALF                0x0080
+#define TLV320AIC23_CLKIN_HALF         0x0040
+#define TLV320AIC23_BOSR_384fs         0x0002  /* BOSR_272fs in USB mode */
+#define TLV320AIC23_USB_CLK_ON         0x0001
+#define TLV320AIC23_SR_MASK             0xf
+#define TLV320AIC23_CLKOUT_SHIFT        7
+#define TLV320AIC23_CLKIN_SHIFT         6
+#define TLV320AIC23_SR_SHIFT            2
+#define TLV320AIC23_BOSR_SHIFT          1
+
+/* Digital interface register */
+#define TLV320AIC23_ACT_ON             0x0001
+
+/*
+ * AUDIO related MACROS
+ */
+
+#define TLV320AIC23_DEFAULT_OUT_VOL    0x70
+#define TLV320AIC23_DEFAULT_IN_VOLUME  0x10
+
+#define TLV320AIC23_OUT_VOL_MIN                TLV320AIC23_LHV_MIN
+#define TLV320AIC23_OUT_VOL_MAX                TLV320AIC23_LHV_MAX
+#define TLV320AIC23_OUT_VO_RANGE       (TLV320AIC23_OUT_VOL_MAX - \
+                                       TLV320AIC23_OUT_VOL_MIN)
+#define TLV320AIC23_OUT_VOL_MASK       TLV320AIC23_OUT_VOL_MAX
+
+#define TLV320AIC23_IN_VOL_MIN         TLV320AIC23_LIV_MIN
+#define TLV320AIC23_IN_VOL_MAX         TLV320AIC23_LIV_MAX
+#define TLV320AIC23_IN_VOL_RANGE       (TLV320AIC23_IN_VOL_MAX - \
+                                       TLV320AIC23_IN_VOL_MIN)
+#define TLV320AIC23_IN_VOL_MASK                TLV320AIC23_IN_VOL_MAX
+
+#define TLV320AIC23_SIDETONE_MASK      0x1c0
+#define TLV320AIC23_SIDETONE_0         0x100
+#define TLV320AIC23_SIDETONE_6         0x000
+#define TLV320AIC23_SIDETONE_9         0x040
+#define TLV320AIC23_SIDETONE_12                0x080
+#define TLV320AIC23_SIDETONE_18                0x0c0
+
+extern struct snd_soc_dai tlv320aic23_dai;
+extern struct snd_soc_codec_device soc_codec_dev_tlv320aic23;
+
+#endif /* _TLV320AIC23_H */