--- /dev/null
+ /*
+ * 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 <linux/regmap.h>
+
+#include "ad1836.h"
+
+enum ad1836_type {
+ AD1835,
+ AD1836,
+ AD1838,
+};
+
+/* codec private data */
+struct ad1836_priv {
+ enum ad1836_type type;
+ struct regmap *regmap;
+};
+
+/*
+ * AD1836 volume/mute/de-emphasis etc. controls
+ */
+static const char *ad1836_deemp[] = {"None", "44.1kHz", "32kHz", "48kHz"};
+
+static SOC_ENUM_SINGLE_DECL(ad1836_deemp_enum,
+ AD1836_DAC_CTRL1, 8, 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)
+{
+ struct ad1836_priv *ad1836 = snd_soc_codec_get_drvdata(dai->codec);
+ int word_len = 0;
+
+ /* bit size */
+ switch (params_width(params)) {
+ case 16:
+ word_len = AD1836_WORD_LEN_16;
+ break;
+ case 20:
+ word_len = AD1836_WORD_LEN_20;
+ break;
+ case 24:
+ case 32:
+ word_len = AD1836_WORD_LEN_24;
+ break;
+ default:
+ return -EINVAL;
+ }
+
+ regmap_update_bits(ad1836->regmap, AD1836_DAC_CTRL1,
+ AD1836_DAC_WORD_LEN_MASK,
+ word_len << AD1836_DAC_WORD_LEN_OFFSET);
+
+ regmap_update_bits(ad1836->regmap, 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)
+{
+ struct ad1836_priv *ad1836 = snd_soc_codec_get_drvdata(codec);
+ /* reset clock control mode */
+ return regmap_update_bits(ad1836->regmap, AD1836_ADC_CTRL2,
+ AD1836_ADC_SERFMT_MASK, 0);
+}
+
+static int ad1836_resume(struct snd_soc_codec *codec)
+{
+ struct ad1836_priv *ad1836 = snd_soc_codec_get_drvdata(codec);
+ /* restore clock control mode */
+ return regmap_update_bits(ad1836->regmap, 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;
+
+ /* default setting for ad1836 */
+ /* de-emphasis: 48kHz, power-on dac */
+ regmap_write(ad1836->regmap, AD1836_DAC_CTRL1, 0x300);
+ /* unmute dac channels */
+ regmap_write(ad1836->regmap, AD1836_DAC_CTRL2, 0x0);
+ /* high-pass filter enable, power-on adc */
+ regmap_write(ad1836->regmap, AD1836_ADC_CTRL1, 0x100);
+ /* unmute adc channles, adc aux mode */
+ regmap_write(ad1836->regmap, AD1836_ADC_CTRL2, 0x180);
+ /* volume */
+ for (i = 1; i <= num_dacs; ++i) {
+ regmap_write(ad1836->regmap, AD1836_DAC_L_VOL(i), 0x3FF);
+ regmap_write(ad1836->regmap, AD1836_DAC_R_VOL(i), 0x3FF);
+ }
+
+ if (ad1836->type == AD1836) {
+ /* left/right diff:PGA/MUX */
+ regmap_write(ad1836->regmap, AD1836_ADC_CTRL3, 0x3A);
+ ret = snd_soc_add_codec_controls(codec, ad1836_controls,
+ ARRAY_SIZE(ad1836_controls));
+ if (ret)
+ return ret;
+ } else {
+ regmap_write(ad1836->regmap, 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)
+{
+ struct ad1836_priv *ad1836 = snd_soc_codec_get_drvdata(codec);
+ /* reset clock control mode */
+ return regmap_update_bits(ad1836->regmap, 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,
+
+ .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 const struct reg_default ad1836_reg_defaults[] = {
+ { AD1836_DAC_CTRL1, 0x0000 },
+ { AD1836_DAC_CTRL2, 0x0000 },
+ { AD1836_DAC_L_VOL(0), 0x0000 },
+ { AD1836_DAC_R_VOL(0), 0x0000 },
+ { AD1836_DAC_L_VOL(1), 0x0000 },
+ { AD1836_DAC_R_VOL(1), 0x0000 },
+ { AD1836_DAC_L_VOL(2), 0x0000 },
+ { AD1836_DAC_R_VOL(2), 0x0000 },
+ { AD1836_DAC_L_VOL(3), 0x0000 },
+ { AD1836_DAC_R_VOL(3), 0x0000 },
+ { AD1836_ADC_CTRL1, 0x0000 },
+ { AD1836_ADC_CTRL2, 0x0000 },
+ { AD1836_ADC_CTRL3, 0x0000 },
+};
+
+static const struct regmap_config ad1836_regmap_config = {
+ .val_bits = 12,
+ .reg_bits = 4,
+ .read_flag_mask = 0x08,
+
+ .max_register = AD1836_ADC_CTRL3,
+ .reg_defaults = ad1836_reg_defaults,
+ .num_reg_defaults = ARRAY_SIZE(ad1836_reg_defaults),
+ .cache_type = REGCACHE_RBTREE,
+};
+
+static int 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->regmap = devm_regmap_init_spi(spi, &ad1836_regmap_config);
+ if (IS_ERR(ad1836->regmap))
+ return PTR_ERR(ad1836->regmap);
+
+ 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 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 = ad1836_spi_remove,
+ .id_table = ad1836_ids,
+};
+
+module_spi_driver(ad1836_spi_driver);
+
+MODULE_DESCRIPTION("ASoC ad1836 driver");
+MODULE_AUTHOR("Barry Song <21cnbao@gmail.com>");
+MODULE_LICENSE("GPL");
Code Review / kvmfornfv.git / blobdiff