/* * ALSA SoC TWL4030 codec driver * * Author: Steve Sakoman, * * 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. * * You should have received a copy of the GNU General Public License * along with this program; if not, write to the Free Software * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA * 02110-1301 USA * */ #include #include #include #include #include #include #include #include #include #include #include #include #include #include #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) */ 0x24, /* REG_ANAMICL (0x5) */ 0x04, /* 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) */ }; /* * 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_clear_codecpdz(struct snd_soc_codec *codec) { u8 mode; mode = twl4030_read_reg_cache(codec, TWL4030_REG_CODEC_MODE); twl4030_write(codec, TWL4030_REG_CODEC_MODE, mode & ~TWL4030_CODECPDZ); /* REVISIT: this delay is present in TI sample drivers */ /* but there seems to be no TRM requirement for it */ udelay(10); } static void twl4030_set_codecpdz(struct snd_soc_codec *codec) { u8 mode; mode = twl4030_read_reg_cache(codec, TWL4030_REG_CODEC_MODE); twl4030_write(codec, TWL4030_REG_CODEC_MODE, mode | TWL4030_CODECPDZ); /* REVISIT: this delay is present in TI sample drivers */ /* but there seems to be no TRM requirement for it */ udelay(10); } static void twl4030_init_chip(struct snd_soc_codec *codec) { int i; /* clear CODECPDZ prior to setting register defaults */ twl4030_clear_codecpdz(codec); /* set all audio section registers to reasonable defaults */ for (i = TWL4030_REG_OPTION; i <= TWL4030_REG_MISC_SET_2; i++) twl4030_write(codec, i, twl4030_reg[i]); } static const struct snd_kcontrol_new twl4030_snd_controls[] = { SOC_DOUBLE_R("Master Playback Volume", TWL4030_REG_ARXL2PGA, TWL4030_REG_ARXR2PGA, 0, 127, 0), SOC_DOUBLE_R("Capture Volume", TWL4030_REG_ATXL1PGA, TWL4030_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 void twl4030_power_up(struct snd_soc_codec *codec) { u8 anamicl, regmisc1, byte, popn, hsgain; int i = 0; /* set CODECPDZ to turn on codec */ twl4030_set_codecpdz(codec); /* initiate offset cancellation */ anamicl = twl4030_read_reg_cache(codec, TWL4030_REG_ANAMICL); twl4030_write(codec, TWL4030_REG_ANAMICL, anamicl | TWL4030_CNCL_OFFSET_START); /* wait for offset cancellation to complete */ do { /* this takes a little while, so don't slam i2c */ udelay(2000); twl4030_i2c_read_u8(TWL4030_MODULE_AUDIO_VOICE, &byte, TWL4030_REG_ANAMICL); } while ((i++ < 100) && ((byte & TWL4030_CNCL_OFFSET_START) == TWL4030_CNCL_OFFSET_START)); /* anti-pop when changing analog gain */ regmisc1 = twl4030_read_reg_cache(codec, TWL4030_REG_MISC_SET_1); twl4030_write(codec, TWL4030_REG_MISC_SET_1, regmisc1 | TWL4030_SMOOTH_ANAVOL_EN); /* toggle CODECPDZ as per TRM */ twl4030_clear_codecpdz(codec); twl4030_set_codecpdz(codec); /* program anti-pop with bias ramp delay */ popn = twl4030_read_reg_cache(codec, TWL4030_REG_HS_POPN_SET); popn &= TWL4030_RAMP_DELAY; popn |= TWL4030_RAMP_DELAY_645MS; twl4030_write(codec, TWL4030_REG_HS_POPN_SET, popn); popn |= TWL4030_VMID_EN; twl4030_write(codec, TWL4030_REG_HS_POPN_SET, popn); /* enable output stage and gain setting */ hsgain = TWL4030_HSR_GAIN_0DB | TWL4030_HSL_GAIN_0DB; twl4030_write(codec, TWL4030_REG_HS_GAIN_SET, hsgain); /* enable anti-pop ramp */ popn |= TWL4030_RAMP_EN; twl4030_write(codec, TWL4030_REG_HS_POPN_SET, popn); } static void twl4030_power_down(struct snd_soc_codec *codec) { u8 popn, hsgain; /* disable anti-pop ramp */ popn = twl4030_read_reg_cache(codec, TWL4030_REG_HS_POPN_SET); popn &= ~TWL4030_RAMP_EN; twl4030_write(codec, TWL4030_REG_HS_POPN_SET, popn); /* disable output stage and gain setting */ hsgain = TWL4030_HSR_GAIN_PWR_DOWN | TWL4030_HSL_GAIN_PWR_DOWN; twl4030_write(codec, TWL4030_REG_HS_GAIN_SET, hsgain); /* disable bias out */ popn &= ~TWL4030_VMID_EN; twl4030_write(codec, TWL4030_REG_HS_POPN_SET, popn); /* power down */ twl4030_clear_codecpdz(codec); } static int twl4030_set_bias_level(struct snd_soc_codec *codec, enum snd_soc_bias_level level) { switch (level) { case SND_SOC_BIAS_ON: twl4030_power_up(codec); break; case SND_SOC_BIAS_PREPARE: /* TODO: develop a twl4030_prepare function */ break; case SND_SOC_BIAS_STANDBY: /* TODO: develop a twl4030_standby function */ twl4030_power_down(codec); break; case SND_SOC_BIAS_OFF: twl4030_power_down(codec); break; } codec->bias_level = level; return 0; } 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; u8 mode, old_mode, format, old_format; /* bit rate */ old_mode = twl4030_read_reg_cache(codec, TWL4030_REG_CODEC_MODE) & ~TWL4030_CODECPDZ; mode = old_mode & ~TWL4030_APLL_RATE; switch (params_rate(params)) { case 8000: mode |= TWL4030_APLL_RATE_8000; break; case 11025: mode |= TWL4030_APLL_RATE_11025; break; case 12000: mode |= TWL4030_APLL_RATE_12000; break; case 16000: mode |= TWL4030_APLL_RATE_16000; break; case 22050: mode |= TWL4030_APLL_RATE_22050; break; case 24000: mode |= TWL4030_APLL_RATE_24000; break; case 32000: mode |= TWL4030_APLL_RATE_32000; break; case 44100: mode |= TWL4030_APLL_RATE_44100; break; case 48000: mode |= TWL4030_APLL_RATE_48000; break; default: printk(KERN_ERR "TWL4030 hw params: unknown rate %d\n", params_rate(params)); return -EINVAL; } if (mode != old_mode) { /* change rate and set CODECPDZ */ twl4030_write(codec, TWL4030_REG_CODEC_MODE, mode); twl4030_set_codecpdz(codec); } /* sample size */ old_format = twl4030_read_reg_cache(codec, TWL4030_REG_AUDIO_IF); format = old_format; format &= ~TWL4030_DATA_WIDTH; switch (params_format(params)) { case SNDRV_PCM_FORMAT_S16_LE: format |= TWL4030_DATA_WIDTH_16S_16W; break; case SNDRV_PCM_FORMAT_S24_LE: format |= TWL4030_DATA_WIDTH_32S_24W; break; default: printk(KERN_ERR "TWL4030 hw params: unknown format %d\n", params_format(params)); return -EINVAL; } if (format != old_format) { /* clear CODECPDZ before changing format (codec requirement) */ twl4030_clear_codecpdz(codec); /* change format */ twl4030_write(codec, TWL4030_REG_AUDIO_IF, format); /* set CODECPDZ afterwards */ twl4030_set_codecpdz(codec); } return 0; } static int twl4030_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; u8 infreq; switch (freq) { case 19200000: infreq = TWL4030_APLL_INFREQ_19200KHZ; break; case 26000000: infreq = TWL4030_APLL_INFREQ_26000KHZ; break; case 38400000: infreq = TWL4030_APLL_INFREQ_38400KHZ; break; default: printk(KERN_ERR "TWL4030 set sysclk: unknown rate %d\n", freq); return -EINVAL; } infreq |= TWL4030_APLL_EN; twl4030_write(codec, TWL4030_REG_APLL_CTL, infreq); 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; u8 old_format, format; /* get format */ old_format = twl4030_read_reg_cache(codec, TWL4030_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 &= ~(TWL4030_AIF_SLAVE_EN); format |= TWL4030_CLK256FS_EN; break; case SND_SOC_DAIFMT_CBS_CFS: format &= ~(TWL4030_CLK256FS_EN); format |= TWL4030_AIF_SLAVE_EN; break; default: return -EINVAL; } /* interface format */ format &= ~TWL4030_AIF_FORMAT; switch (fmt & SND_SOC_DAIFMT_FORMAT_MASK) { case SND_SOC_DAIFMT_I2S: format |= TWL4030_AIF_FORMAT_CODEC; break; default: return -EINVAL; } if (format != old_format) { /* clear CODECPDZ before changing format (codec requirement) */ twl4030_clear_codecpdz(codec); /* change format */ twl4030_write(codec, TWL4030_REG_AUDIO_IF, format); /* set CODECPDZ afterwards */ twl4030_set_codecpdz(codec); } 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 = { .set_sysclk = twl4030_set_dai_sysclk, .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; 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; 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_init_chip(codec); /* power on device */ twl4030_set_bias_level(codec, SND_SOC_BIAS_STANDBY); 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; } 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 *twl4030_socdev; static int twl4030_probe(struct platform_device *pdev) { struct snd_soc_device *socdev = platform_get_drvdata(pdev); struct snd_soc_codec *codec; 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); 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); 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");