/* * ALSA SoC TLV320AIC23 codec driver * * Author: Arun KS, * 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 #include #include #include #include #include #include #include #include #include #include #include #include #include #include "tlv320aic23.h" #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[2]; /* 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[0] = (reg << 1) | (value >> 8 & 0x01); data[1] = value & 0xff; tlv320aic23_write_reg_cache(codec, reg, value); if (codec->hw_write(codec->control_data, data, 2) == 2) 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 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 DECLARE_TLV_DB_SCALE(out_gain_tlv, -12100, 100, 0); static const DECLARE_TLV_DB_SCALE(input_gain_tlv, -1725, 75, 0); static const DECLARE_TLV_DB_SCALE(sidetone_vol_tlv, -1800, 300, 0); static int snd_soc_tlv320aic23_put_volsw(struct snd_kcontrol *kcontrol, struct snd_ctl_elem_value *ucontrol) { struct snd_soc_codec *codec = snd_kcontrol_chip(kcontrol); u16 val, reg; val = (ucontrol->value.integer.value[0] & 0x07); /* linear conversion to userspace * 000 = -6db * 001 = -9db * 010 = -12db * 011 = -18db (Min) * 100 = 0db (Max) */ val = (val >= 4) ? 4 : (3 - val); reg = tlv320aic23_read_reg_cache(codec, TLV320AIC23_ANLG) & (~0x1C0); tlv320aic23_write(codec, TLV320AIC23_ANLG, reg | (val << 6)); return 0; } static int snd_soc_tlv320aic23_get_volsw(struct snd_kcontrol *kcontrol, struct snd_ctl_elem_value *ucontrol) { struct snd_soc_codec *codec = snd_kcontrol_chip(kcontrol); u16 val; val = tlv320aic23_read_reg_cache(codec, TLV320AIC23_ANLG) & (0x1C0); val = val >> 6; val = (val >= 4) ? 4 : (3 - val); ucontrol->value.integer.value[0] = val; return 0; } #define SOC_TLV320AIC23_SINGLE_TLV(xname, reg, shift, max, invert, tlv_array) \ { .iface = SNDRV_CTL_ELEM_IFACE_MIXER, .name = xname, \ .access = SNDRV_CTL_ELEM_ACCESS_TLV_READ |\ SNDRV_CTL_ELEM_ACCESS_READWRITE,\ .tlv.p = (tlv_array), \ .info = snd_soc_info_volsw, .get = snd_soc_tlv320aic23_get_volsw,\ .put = snd_soc_tlv320aic23_put_volsw, \ .private_value = SOC_SINGLE_VALUE(reg, shift, max, invert) } 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_TLV320AIC23_SINGLE_TLV("Sidetone Volume", TLV320AIC23_ANLG, 6, 4, 0, sidetone_vol_tlv), 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_master_send; 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 "); MODULE_LICENSE("GPL");