1 files changed, 418 insertions, 0 deletions

diff --git a/kernel/sound/soc/codecs/ad1836.c b/kernel/sound/soc/codecs/ad1836.c
new file mode 100644
index 000000000..685998dd0
--- /dev/null
+++ b/kernel/sound/soc/codecs/ad1836.c
@@ -0,0 +1,418 @@
+ /*
+ * 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");