| /* |
| * File: sound/soc/codecs/ad1836.c |
| * Author: Barry Song <Barry.Song@analog.com> |
| * |
| * Created: Aug 04 2009 |
| * Description: Driver for AD1836 sound chip |
| * |
| * Modified: |
| * Copyright 2009 Analog Devices Inc. |
| * |
| * Bugs: Enter bugs at http://blackfin.uclinux.org/ |
| * |
| * This program is free software; you can redistribute it and/or modify |
| * it under the terms of the GNU General Public License as published by |
| * the Free Software Foundation; either version 2 of the License, or |
| * (at your option) any later version. |
| */ |
| |
| #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 snd_soc_control_type control_type; |
| void *control_data; |
| 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" }, |
| }; |
| |
| /* |
| * 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 = 3; |
| break; |
| case SNDRV_PCM_FORMAT_S20_3LE: |
| word_len = 1; |
| break; |
| case SNDRV_PCM_FORMAT_S24_LE: |
| case SNDRV_PCM_FORMAT_S32_LE: |
| word_len = 0; |
| break; |
| } |
| |
| snd_soc_update_bits(codec, AD1836_DAC_CTRL1, |
| AD1836_DAC_WORD_LEN_MASK, word_len); |
| |
| snd_soc_update_bits(codec, AD1836_ADC_CTRL2, |
| AD1836_ADC_WORD_LEN_MASK, word_len); |
| |
| return 0; |
| } |
| |
| #ifdef CONFIG_PM |
| static int ad1836_soc_suspend(struct snd_soc_codec *codec, |
| pm_message_t state) |
| { |
| /* reset clock control mode */ |
| return snd_soc_update_bits(codec, AD1836_ADC_CTRL2, |
| AD1836_ADC_SERFMT_MASK, 0); |
| } |
| |
| static int ad1836_soc_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_soc_suspend NULL |
| #define ad1836_soc_resume NULL |
| #endif |
| |
| static 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), |
| }; |
| |
| 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; |
| |
| codec->control_data = ad1836->control_data; |
| 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); |
| } else { |
| snd_soc_write(codec, AD1836_ADC_CTRL3, 0x00); |
| } |
| |
| ret = snd_soc_add_controls(codec, ad183x_dac_controls, num_dacs * 2); |
| if (ret) |
| return ret; |
| |
| ret = snd_soc_add_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_soc_suspend, |
| .resume = ad1836_soc_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 = kzalloc(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); |
| ad1836->control_data = spi; |
| ad1836->control_type = SND_SOC_SPI; |
| |
| ret = snd_soc_register_codec(&spi->dev, |
| &soc_codec_dev_ad1836, &ad183x_dais[ad1836->type], 1); |
| if (ret < 0) |
| kfree(ad1836); |
| return ret; |
| } |
| |
| static int __devexit ad1836_spi_remove(struct spi_device *spi) |
| { |
| snd_soc_unregister_codec(&spi->dev); |
| kfree(spi_get_drvdata(spi)); |
| 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-codec", |
| .owner = THIS_MODULE, |
| }, |
| .probe = ad1836_spi_probe, |
| .remove = __devexit_p(ad1836_spi_remove), |
| .id_table = ad1836_ids, |
| }; |
| |
| static int __init ad1836_init(void) |
| { |
| int ret; |
| |
| ret = spi_register_driver(&ad1836_spi_driver); |
| if (ret != 0) { |
| printk(KERN_ERR "Failed to register ad1836 SPI driver: %d\n", |
| ret); |
| } |
| |
| return ret; |
| } |
| 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"); |