diff options
Diffstat (limited to 'ANDROID_3.4.5/sound/soc/codecs/ad1836.c')
| -rw-r--r-- | ANDROID_3.4.5/sound/soc/codecs/ad1836.c | 398 |
1 files changed, 398 insertions, 0 deletions
diff --git a/ANDROID_3.4.5/sound/soc/codecs/ad1836.c b/ANDROID_3.4.5/sound/soc/codecs/ad1836.c new file mode 100644 index 00000000..12e3b411 --- /dev/null +++ b/ANDROID_3.4.5/sound/soc/codecs/ad1836.c @@ -0,0 +1,398 @@ + /* + * Audio Codec driver supporting: + * AD1835A, AD1836, AD1837A, AD1838A, AD1839A + * + * Copyright 2009-2011 Analog Devices Inc. + * + * Licensed under the GPL-2 or later. + */ + +#include <linux/init.h> +#include <linux/slab.h> +#include <linux/module.h> +#include <linux/kernel.h> +#include <linux/device.h> +#include <sound/core.h> +#include <sound/pcm.h> +#include <sound/pcm_params.h> +#include <sound/initval.h> +#include <sound/soc.h> +#include <sound/tlv.h> +#include <linux/spi/spi.h> +#include "ad1836.h" + +enum ad1836_type { + AD1835, + AD1836, + AD1838, +}; + +/* codec private data */ +struct ad1836_priv { + enum ad1836_type type; +}; + +/* + * AD1836 volume/mute/de-emphasis etc. controls + */ +static const char *ad1836_deemp[] = {"None", "44.1kHz", "32kHz", "48kHz"}; + +static const struct soc_enum ad1836_deemp_enum = + SOC_ENUM_SINGLE(AD1836_DAC_CTRL1, 8, 4, ad1836_deemp); + +#define AD1836_DAC_VOLUME(x) \ + SOC_DOUBLE_R("DAC" #x " Playback Volume", AD1836_DAC_L_VOL(x), \ + AD1836_DAC_R_VOL(x), 0, 0x3FF, 0) + +#define AD1836_DAC_SWITCH(x) \ + SOC_DOUBLE("DAC" #x " Playback Switch", AD1836_DAC_CTRL2, \ + AD1836_MUTE_LEFT(x), AD1836_MUTE_RIGHT(x), 1, 1) + +#define AD1836_ADC_SWITCH(x) \ + SOC_DOUBLE("ADC" #x " Capture Switch", AD1836_ADC_CTRL2, \ + AD1836_MUTE_LEFT(x), AD1836_MUTE_RIGHT(x), 1, 1) + +static const struct snd_kcontrol_new ad183x_dac_controls[] = { + AD1836_DAC_VOLUME(1), + AD1836_DAC_SWITCH(1), + AD1836_DAC_VOLUME(2), + AD1836_DAC_SWITCH(2), + AD1836_DAC_VOLUME(3), + AD1836_DAC_SWITCH(3), + AD1836_DAC_VOLUME(4), + AD1836_DAC_SWITCH(4), +}; + +static const struct snd_soc_dapm_widget ad183x_dac_dapm_widgets[] = { + SND_SOC_DAPM_OUTPUT("DAC1OUT"), + SND_SOC_DAPM_OUTPUT("DAC2OUT"), + SND_SOC_DAPM_OUTPUT("DAC3OUT"), + SND_SOC_DAPM_OUTPUT("DAC4OUT"), +}; + +static const struct snd_soc_dapm_route ad183x_dac_routes[] = { + { "DAC1OUT", NULL, "DAC" }, + { "DAC2OUT", NULL, "DAC" }, + { "DAC3OUT", NULL, "DAC" }, + { "DAC4OUT", NULL, "DAC" }, +}; + +static const struct snd_kcontrol_new ad183x_adc_controls[] = { + AD1836_ADC_SWITCH(1), + AD1836_ADC_SWITCH(2), + AD1836_ADC_SWITCH(3), +}; + +static const struct snd_soc_dapm_widget ad183x_adc_dapm_widgets[] = { + SND_SOC_DAPM_INPUT("ADC1IN"), + SND_SOC_DAPM_INPUT("ADC2IN"), +}; + +static const struct snd_soc_dapm_route ad183x_adc_routes[] = { + { "ADC", NULL, "ADC1IN" }, + { "ADC", NULL, "ADC2IN" }, +}; + +static const struct snd_kcontrol_new ad183x_controls[] = { + /* ADC high-pass filter */ + SOC_SINGLE("ADC High Pass Filter Switch", AD1836_ADC_CTRL1, + AD1836_ADC_HIGHPASS_FILTER, 1, 0), + + /* DAC de-emphasis */ + SOC_ENUM("Playback Deemphasis", ad1836_deemp_enum), +}; + +static const struct snd_soc_dapm_widget ad183x_dapm_widgets[] = { + SND_SOC_DAPM_DAC("DAC", "Playback", AD1836_DAC_CTRL1, + AD1836_DAC_POWERDOWN, 1), + SND_SOC_DAPM_ADC("ADC", "Capture", SND_SOC_NOPM, 0, 0), + SND_SOC_DAPM_SUPPLY("ADC_PWR", AD1836_ADC_CTRL1, + AD1836_ADC_POWERDOWN, 1, NULL, 0), +}; + +static const struct snd_soc_dapm_route ad183x_dapm_routes[] = { + { "DAC", NULL, "ADC_PWR" }, + { "ADC", NULL, "ADC_PWR" }, +}; + +static const DECLARE_TLV_DB_SCALE(ad1836_in_tlv, 0, 300, 0); + +static const struct snd_kcontrol_new ad1836_controls[] = { + SOC_DOUBLE_TLV("ADC2 Capture Volume", AD1836_ADC_CTRL1, 3, 0, 4, 0, + ad1836_in_tlv), +}; + +/* + * DAI ops entries + */ + +static int ad1836_set_dai_fmt(struct snd_soc_dai *codec_dai, + unsigned int fmt) +{ + switch (fmt & SND_SOC_DAIFMT_FORMAT_MASK) { + /* at present, we support adc aux mode to interface with + * blackfin sport tdm mode + */ + case SND_SOC_DAIFMT_DSP_A: + break; + default: + return -EINVAL; + } + + switch (fmt & SND_SOC_DAIFMT_INV_MASK) { + case SND_SOC_DAIFMT_IB_IF: + break; + default: + return -EINVAL; + } + + switch (fmt & SND_SOC_DAIFMT_MASTER_MASK) { + /* ALCLK,ABCLK are both output, AD1836 can only be master */ + case SND_SOC_DAIFMT_CBM_CFM: + break; + default: + return -EINVAL; + } + + return 0; +} + +static int ad1836_hw_params(struct snd_pcm_substream *substream, + struct snd_pcm_hw_params *params, + struct snd_soc_dai *dai) +{ + int word_len = 0; + + struct snd_soc_pcm_runtime *rtd = substream->private_data; + struct snd_soc_codec *codec = rtd->codec; + + /* bit size */ + switch (params_format(params)) { + case SNDRV_PCM_FORMAT_S16_LE: + word_len = AD1836_WORD_LEN_16; + break; + case SNDRV_PCM_FORMAT_S20_3LE: + word_len = AD1836_WORD_LEN_20; + break; + case SNDRV_PCM_FORMAT_S24_LE: + case SNDRV_PCM_FORMAT_S32_LE: + word_len = AD1836_WORD_LEN_24; + break; + } + + snd_soc_update_bits(codec, AD1836_DAC_CTRL1, AD1836_DAC_WORD_LEN_MASK, + word_len << AD1836_DAC_WORD_LEN_OFFSET); + + snd_soc_update_bits(codec, AD1836_ADC_CTRL2, AD1836_ADC_WORD_LEN_MASK, + word_len << AD1836_ADC_WORD_OFFSET); + + return 0; +} + +static const struct snd_soc_dai_ops ad1836_dai_ops = { + .hw_params = ad1836_hw_params, + .set_fmt = ad1836_set_dai_fmt, +}; + +#define AD183X_DAI(_name, num_dacs, num_adcs) \ +{ \ + .name = _name "-hifi", \ + .playback = { \ + .stream_name = "Playback", \ + .channels_min = 2, \ + .channels_max = (num_dacs) * 2, \ + .rates = SNDRV_PCM_RATE_48000, \ + .formats = SNDRV_PCM_FMTBIT_S32_LE | SNDRV_PCM_FMTBIT_S16_LE | \ + SNDRV_PCM_FMTBIT_S20_3LE | SNDRV_PCM_FMTBIT_S24_LE, \ + }, \ + .capture = { \ + .stream_name = "Capture", \ + .channels_min = 2, \ + .channels_max = (num_adcs) * 2, \ + .rates = SNDRV_PCM_RATE_48000, \ + .formats = SNDRV_PCM_FMTBIT_S32_LE | SNDRV_PCM_FMTBIT_S16_LE | \ + SNDRV_PCM_FMTBIT_S20_3LE | SNDRV_PCM_FMTBIT_S24_LE, \ + }, \ + .ops = &ad1836_dai_ops, \ +} + +static struct snd_soc_dai_driver ad183x_dais[] = { + [AD1835] = AD183X_DAI("ad1835", 4, 1), + [AD1836] = AD183X_DAI("ad1836", 3, 2), + [AD1838] = AD183X_DAI("ad1838", 3, 1), +}; + +#ifdef CONFIG_PM +static int ad1836_suspend(struct snd_soc_codec *codec) +{ + /* reset clock control mode */ + return snd_soc_update_bits(codec, AD1836_ADC_CTRL2, + AD1836_ADC_SERFMT_MASK, 0); +} + +static int ad1836_resume(struct snd_soc_codec *codec) +{ + /* restore clock control mode */ + return snd_soc_update_bits(codec, AD1836_ADC_CTRL2, + AD1836_ADC_SERFMT_MASK, AD1836_ADC_AUX); +} +#else +#define ad1836_suspend NULL +#define ad1836_resume NULL +#endif + +static int ad1836_probe(struct snd_soc_codec *codec) +{ + struct ad1836_priv *ad1836 = snd_soc_codec_get_drvdata(codec); + struct snd_soc_dapm_context *dapm = &codec->dapm; + int num_dacs, num_adcs; + int ret = 0; + int i; + + num_dacs = ad183x_dais[ad1836->type].playback.channels_max / 2; + num_adcs = ad183x_dais[ad1836->type].capture.channels_max / 2; + + ret = snd_soc_codec_set_cache_io(codec, 4, 12, SND_SOC_SPI); + if (ret < 0) { + dev_err(codec->dev, "failed to set cache I/O: %d\n", + ret); + return ret; + } + + /* default setting for ad1836 */ + /* de-emphasis: 48kHz, power-on dac */ + snd_soc_write(codec, AD1836_DAC_CTRL1, 0x300); + /* unmute dac channels */ + snd_soc_write(codec, AD1836_DAC_CTRL2, 0x0); + /* high-pass filter enable, power-on adc */ + snd_soc_write(codec, AD1836_ADC_CTRL1, 0x100); + /* unmute adc channles, adc aux mode */ + snd_soc_write(codec, AD1836_ADC_CTRL2, 0x180); + /* volume */ + for (i = 1; i <= num_dacs; ++i) { + snd_soc_write(codec, AD1836_DAC_L_VOL(i), 0x3FF); + snd_soc_write(codec, AD1836_DAC_R_VOL(i), 0x3FF); + } + + if (ad1836->type == AD1836) { + /* left/right diff:PGA/MUX */ + snd_soc_write(codec, AD1836_ADC_CTRL3, 0x3A); + ret = snd_soc_add_codec_controls(codec, ad1836_controls, + ARRAY_SIZE(ad1836_controls)); + if (ret) + return ret; + } else { + snd_soc_write(codec, AD1836_ADC_CTRL3, 0x00); + } + + ret = snd_soc_add_codec_controls(codec, ad183x_dac_controls, num_dacs * 2); + if (ret) + return ret; + + ret = snd_soc_add_codec_controls(codec, ad183x_adc_controls, num_adcs); + if (ret) + return ret; + + ret = snd_soc_dapm_new_controls(dapm, ad183x_dac_dapm_widgets, num_dacs); + if (ret) + return ret; + + ret = snd_soc_dapm_new_controls(dapm, ad183x_adc_dapm_widgets, num_adcs); + if (ret) + return ret; + + ret = snd_soc_dapm_add_routes(dapm, ad183x_dac_routes, num_dacs); + if (ret) + return ret; + + ret = snd_soc_dapm_add_routes(dapm, ad183x_adc_routes, num_adcs); + if (ret) + return ret; + + return ret; +} + +/* power down chip */ +static int ad1836_remove(struct snd_soc_codec *codec) +{ + /* reset clock control mode */ + return snd_soc_update_bits(codec, AD1836_ADC_CTRL2, + AD1836_ADC_SERFMT_MASK, 0); +} + +static struct snd_soc_codec_driver soc_codec_dev_ad1836 = { + .probe = ad1836_probe, + .remove = ad1836_remove, + .suspend = ad1836_suspend, + .resume = ad1836_resume, + .reg_cache_size = AD1836_NUM_REGS, + .reg_word_size = sizeof(u16), + + .controls = ad183x_controls, + .num_controls = ARRAY_SIZE(ad183x_controls), + .dapm_widgets = ad183x_dapm_widgets, + .num_dapm_widgets = ARRAY_SIZE(ad183x_dapm_widgets), + .dapm_routes = ad183x_dapm_routes, + .num_dapm_routes = ARRAY_SIZE(ad183x_dapm_routes), +}; + +static int __devinit ad1836_spi_probe(struct spi_device *spi) +{ + struct ad1836_priv *ad1836; + int ret; + + ad1836 = devm_kzalloc(&spi->dev, sizeof(struct ad1836_priv), + GFP_KERNEL); + if (ad1836 == NULL) + return -ENOMEM; + + ad1836->type = spi_get_device_id(spi)->driver_data; + + spi_set_drvdata(spi, ad1836); + + ret = snd_soc_register_codec(&spi->dev, + &soc_codec_dev_ad1836, &ad183x_dais[ad1836->type], 1); + return ret; +} + +static int __devexit ad1836_spi_remove(struct spi_device *spi) +{ + snd_soc_unregister_codec(&spi->dev); + return 0; +} + +static const struct spi_device_id ad1836_ids[] = { + { "ad1835", AD1835 }, + { "ad1836", AD1836 }, + { "ad1837", AD1835 }, + { "ad1838", AD1838 }, + { "ad1839", AD1838 }, + { }, +}; +MODULE_DEVICE_TABLE(spi, ad1836_ids); + +static struct spi_driver ad1836_spi_driver = { + .driver = { + .name = "ad1836", + .owner = THIS_MODULE, + }, + .probe = ad1836_spi_probe, + .remove = __devexit_p(ad1836_spi_remove), + .id_table = ad1836_ids, +}; + +static int __init ad1836_init(void) +{ + return spi_register_driver(&ad1836_spi_driver); +} +module_init(ad1836_init); + +static void __exit ad1836_exit(void) +{ + spi_unregister_driver(&ad1836_spi_driver); +} +module_exit(ad1836_exit); + +MODULE_DESCRIPTION("ASoC ad1836 driver"); +MODULE_AUTHOR("Barry Song <21cnbao@gmail.com>"); +MODULE_LICENSE("GPL"); |