Initial import

1 files changed, 347 insertions, 0 deletions

diff --git a/sound/soc/codecs/ad1980.c b/sound/soc/codecs/ad1980.c
new file mode 100644
index 000000000..3cc69a626
--- /dev/null
+++ b/sound/soc/codecs/ad1980.c
@@ -0,0 +1,347 @@
+/*
+ * ad1980.c  --  ALSA Soc AD1980 codec support
+ *
+ * Copyright:	Analog Device Inc.
+ * Author:	Roy Huang <roy.huang@analog.com>
+ * 		Cliff Cai <cliff.cai@analog.com>
+ *
+ *  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.
+ */
+
+/*
+ * WARNING:
+ *
+ * Because Analog Devices Inc. discontinued the ad1980 sound chip since
+ * Sep. 2009, this ad1980 driver is not maintained, tested and supported
+ * by ADI now.
+ */
+
+#include <linux/init.h>
+#include <linux/slab.h>
+#include <linux/module.h>
+#include <linux/kernel.h>
+#include <linux/device.h>
+#include <linux/regmap.h>
+#include <sound/core.h>
+#include <sound/pcm.h>
+#include <sound/ac97_codec.h>
+#include <sound/initval.h>
+#include <sound/soc.h>
+
+static const struct reg_default ad1980_reg_defaults[] = {
+	{ 0x02, 0x8000 },
+	{ 0x04, 0x8000 },
+	{ 0x06, 0x8000 },
+	{ 0x0c, 0x8008 },
+	{ 0x0e, 0x8008 },
+	{ 0x10, 0x8808 },
+	{ 0x12, 0x8808 },
+	{ 0x16, 0x8808 },
+	{ 0x18, 0x8808 },
+	{ 0x1a, 0x0000 },
+	{ 0x1c, 0x8000 },
+	{ 0x20, 0x0000 },
+	{ 0x28, 0x03c7 },
+	{ 0x2c, 0xbb80 },
+	{ 0x2e, 0xbb80 },
+	{ 0x30, 0xbb80 },
+	{ 0x32, 0xbb80 },
+	{ 0x36, 0x8080 },
+	{ 0x38, 0x8080 },
+	{ 0x3a, 0x2000 },
+	{ 0x60, 0x0000 },
+	{ 0x62, 0x0000 },
+	{ 0x72, 0x0000 },
+	{ 0x74, 0x1001 },
+	{ 0x76, 0x0000 },
+};
+
+static bool ad1980_readable_reg(struct device *dev, unsigned int reg)
+{
+	switch (reg) {
+	case AC97_RESET ... AC97_MASTER_MONO:
+	case AC97_PHONE ... AC97_CD:
+	case AC97_AUX ... AC97_GENERAL_PURPOSE:
+	case AC97_POWERDOWN ... AC97_PCM_LR_ADC_RATE:
+	case AC97_SPDIF:
+	case AC97_CODEC_CLASS_REV:
+	case AC97_PCI_SVID:
+	case AC97_AD_CODEC_CFG:
+	case AC97_AD_JACK_SPDIF:
+	case AC97_AD_SERIAL_CFG:
+	case AC97_VENDOR_ID1:
+	case AC97_VENDOR_ID2:
+		return true;
+	default:
+		return false;
+	}
+}
+
+static bool ad1980_writeable_reg(struct device *dev, unsigned int reg)
+{
+	switch (reg) {
+	case AC97_VENDOR_ID1:
+	case AC97_VENDOR_ID2:
+		return false;
+	default:
+		return ad1980_readable_reg(dev, reg);
+	}
+}
+
+static const struct regmap_config ad1980_regmap_config = {
+	.reg_bits = 16,
+	.reg_stride = 2,
+	.val_bits = 16,
+	.max_register = 0x7e,
+	.cache_type = REGCACHE_RBTREE,
+
+	.volatile_reg = regmap_ac97_default_volatile,
+	.readable_reg = ad1980_readable_reg,
+	.writeable_reg = ad1980_writeable_reg,
+
+	.reg_defaults = ad1980_reg_defaults,
+	.num_reg_defaults = ARRAY_SIZE(ad1980_reg_defaults),
+};
+
+static const char *ad1980_rec_sel[] = {"Mic", "CD", "NC", "AUX", "Line",
+		"Stereo Mix", "Mono Mix", "Phone"};
+
+static SOC_ENUM_DOUBLE_DECL(ad1980_cap_src,
+			    AC97_REC_SEL, 8, 0, ad1980_rec_sel);
+
+static const struct snd_kcontrol_new ad1980_snd_ac97_controls[] = {
+SOC_DOUBLE("Master Playback Volume", AC97_MASTER, 8, 0, 31, 1),
+SOC_SINGLE("Master Playback Switch", AC97_MASTER, 15, 1, 1),
+
+SOC_DOUBLE("Headphone Playback Volume", AC97_HEADPHONE, 8, 0, 31, 1),
+SOC_SINGLE("Headphone Playback Switch", AC97_HEADPHONE, 15, 1, 1),
+
+SOC_DOUBLE("PCM Playback Volume", AC97_PCM, 8, 0, 31, 1),
+SOC_SINGLE("PCM Playback Switch", AC97_PCM, 15, 1, 1),
+
+SOC_DOUBLE("PCM Capture Volume", AC97_REC_GAIN, 8, 0, 31, 0),
+SOC_SINGLE("PCM Capture Switch", AC97_REC_GAIN, 15, 1, 1),
+
+SOC_SINGLE("Mono Playback Volume", AC97_MASTER_MONO, 0, 31, 1),
+SOC_SINGLE("Mono Playback Switch", AC97_MASTER_MONO, 15, 1, 1),
+
+SOC_SINGLE("Phone Capture Volume", AC97_PHONE, 0, 31, 1),
+SOC_SINGLE("Phone Capture Switch", AC97_PHONE, 15, 1, 1),
+
+SOC_SINGLE("Mic Volume", AC97_MIC, 0, 31, 1),
+SOC_SINGLE("Mic Switch", AC97_MIC, 15, 1, 1),
+
+SOC_SINGLE("Stereo Mic Switch", AC97_AD_MISC, 6, 1, 0),
+SOC_DOUBLE("Line HP Swap Switch", AC97_AD_MISC, 10, 5, 1, 0),
+
+SOC_DOUBLE("Surround Playback Volume", AC97_SURROUND_MASTER, 8, 0, 31, 1),
+SOC_DOUBLE("Surround Playback Switch", AC97_SURROUND_MASTER, 15, 7, 1, 1),
+
+SOC_DOUBLE("Center/LFE Playback Volume", AC97_CENTER_LFE_MASTER, 8, 0, 31, 1),
+SOC_DOUBLE("Center/LFE Playback Switch", AC97_CENTER_LFE_MASTER, 15, 7, 1, 1),
+
+SOC_ENUM("Capture Source", ad1980_cap_src),
+
+SOC_SINGLE("Mic Boost Switch", AC97_MIC, 6, 1, 0),
+};
+
+static const struct snd_soc_dapm_widget ad1980_dapm_widgets[] = {
+SND_SOC_DAPM_INPUT("MIC1"),
+SND_SOC_DAPM_INPUT("MIC2"),
+SND_SOC_DAPM_INPUT("CD_L"),
+SND_SOC_DAPM_INPUT("CD_R"),
+SND_SOC_DAPM_INPUT("AUX_L"),
+SND_SOC_DAPM_INPUT("AUX_R"),
+SND_SOC_DAPM_INPUT("LINE_IN_L"),
+SND_SOC_DAPM_INPUT("LINE_IN_R"),
+
+SND_SOC_DAPM_OUTPUT("LFE_OUT"),
+SND_SOC_DAPM_OUTPUT("CENTER_OUT"),
+SND_SOC_DAPM_OUTPUT("LINE_OUT_L"),
+SND_SOC_DAPM_OUTPUT("LINE_OUT_R"),
+SND_SOC_DAPM_OUTPUT("MONO_OUT"),
+SND_SOC_DAPM_OUTPUT("HP_OUT_L"),
+SND_SOC_DAPM_OUTPUT("HP_OUT_R"),
+};
+
+static const struct snd_soc_dapm_route ad1980_dapm_routes[] = {
+	{ "Capture", NULL, "MIC1" },
+	{ "Capture", NULL, "MIC2" },
+	{ "Capture", NULL, "CD_L" },
+	{ "Capture", NULL, "CD_R" },
+	{ "Capture", NULL, "AUX_L" },
+	{ "Capture", NULL, "AUX_R" },
+	{ "Capture", NULL, "LINE_IN_L" },
+	{ "Capture", NULL, "LINE_IN_R" },
+
+	{ "LFE_OUT", NULL, "Playback" },
+	{ "CENTER_OUT", NULL, "Playback" },
+	{ "LINE_OUT_L", NULL, "Playback" },
+	{ "LINE_OUT_R", NULL, "Playback" },
+	{ "MONO_OUT", NULL, "Playback" },
+	{ "HP_OUT_L", NULL, "Playback" },
+	{ "HP_OUT_R", NULL, "Playback" },
+};
+
+static struct snd_soc_dai_driver ad1980_dai = {
+	.name = "ad1980-hifi",
+	.playback = {
+		.stream_name = "Playback",
+		.channels_min = 2,
+		.channels_max = 6,
+		.rates = SNDRV_PCM_RATE_48000,
+		.formats = SND_SOC_STD_AC97_FMTS, },
+	.capture = {
+		.stream_name = "Capture",
+		.channels_min = 2,
+		.channels_max = 2,
+		.rates = SNDRV_PCM_RATE_48000,
+		.formats = SND_SOC_STD_AC97_FMTS, },
+};
+
+static int ad1980_reset(struct snd_soc_codec *codec, int try_warm)
+{
+	struct snd_ac97 *ac97 = snd_soc_codec_get_drvdata(codec);
+	unsigned int retry_cnt = 0;
+
+	do {
+		if (try_warm && soc_ac97_ops->warm_reset) {
+			soc_ac97_ops->warm_reset(ac97);
+			if (snd_soc_read(codec, AC97_RESET) == 0x0090)
+				return 1;
+		}
+
+		soc_ac97_ops->reset(ac97);
+		/*
+		 * Set bit 16slot in register 74h, then every slot will has only
+		 * 16 bits. This command is sent out in 20bit mode, in which
+		 * case the first nibble of data is eaten by the addr. (Tag is
+		 * always 16 bit)
+		 */
+		snd_soc_write(codec, AC97_AD_SERIAL_CFG, 0x9900);
+
+		if (snd_soc_read(codec, AC97_RESET)  == 0x0090)
+			return 0;
+	} while (retry_cnt++ < 10);
+
+	dev_err(codec->dev, "Failed to reset: AC97 link error\n");
+
+	return -EIO;
+}
+
+static int ad1980_soc_probe(struct snd_soc_codec *codec)
+{
+	struct snd_ac97 *ac97;
+	struct regmap *regmap;
+	int ret;
+	u16 vendor_id2;
+	u16 ext_status;
+
+	ac97 = snd_soc_new_ac97_codec(codec);
+	if (IS_ERR(ac97)) {
+		ret = PTR_ERR(ac97);
+		dev_err(codec->dev, "Failed to register AC97 codec: %d\n", ret);
+		return ret;
+	}
+
+	regmap = regmap_init_ac97(ac97, &ad1980_regmap_config);
+	if (IS_ERR(regmap)) {
+		ret = PTR_ERR(regmap);
+		goto err_free_ac97;
+	}
+
+	snd_soc_codec_init_regmap(codec, regmap);
+	snd_soc_codec_set_drvdata(codec, ac97);
+
+	ret = ad1980_reset(codec, 0);
+	if (ret < 0)
+		goto reset_err;
+
+	/* Read out vendor ID to make sure it is ad1980 */
+	if (snd_soc_read(codec, AC97_VENDOR_ID1) != 0x4144) {
+		ret = -ENODEV;
+		goto reset_err;
+	}
+
+	vendor_id2 = snd_soc_read(codec, AC97_VENDOR_ID2);
+
+	if (vendor_id2 != 0x5370) {
+		if (vendor_id2 != 0x5374) {
+			ret = -ENODEV;
+			goto reset_err;
+		} else {
+			dev_warn(codec->dev,
+				"Found AD1981 - only 2/2 IN/OUT Channels supported\n");
+		}
+	}
+
+	/* unmute captures and playbacks volume */
+	snd_soc_write(codec, AC97_MASTER, 0x0000);
+	snd_soc_write(codec, AC97_PCM, 0x0000);
+	snd_soc_write(codec, AC97_REC_GAIN, 0x0000);
+	snd_soc_write(codec, AC97_CENTER_LFE_MASTER, 0x0000);
+	snd_soc_write(codec, AC97_SURROUND_MASTER, 0x0000);
+
+	/*power on LFE/CENTER/Surround DACs*/
+	ext_status = snd_soc_read(codec, AC97_EXTENDED_STATUS);
+	snd_soc_write(codec, AC97_EXTENDED_STATUS, ext_status&~0x3800);
+
+	return 0;
+
+reset_err:
+	snd_soc_codec_exit_regmap(codec);
+err_free_ac97:
+	snd_soc_free_ac97_codec(ac97);
+	return ret;
+}
+
+static int ad1980_soc_remove(struct snd_soc_codec *codec)
+{
+	struct snd_ac97 *ac97 = snd_soc_codec_get_drvdata(codec);
+
+	snd_soc_codec_exit_regmap(codec);
+	snd_soc_free_ac97_codec(ac97);
+	return 0;
+}
+
+static struct snd_soc_codec_driver soc_codec_dev_ad1980 = {
+	.probe = 	ad1980_soc_probe,
+	.remove = 	ad1980_soc_remove,
+
+	.controls = ad1980_snd_ac97_controls,
+	.num_controls = ARRAY_SIZE(ad1980_snd_ac97_controls),
+	.dapm_widgets = ad1980_dapm_widgets,
+	.num_dapm_widgets = ARRAY_SIZE(ad1980_dapm_widgets),
+	.dapm_routes = ad1980_dapm_routes,
+	.num_dapm_routes = ARRAY_SIZE(ad1980_dapm_routes),
+};
+
+static int ad1980_probe(struct platform_device *pdev)
+{
+	return snd_soc_register_codec(&pdev->dev,
+			&soc_codec_dev_ad1980, &ad1980_dai, 1);
+}
+
+static int ad1980_remove(struct platform_device *pdev)
+{
+	snd_soc_unregister_codec(&pdev->dev);
+	return 0;
+}
+
+static struct platform_driver ad1980_codec_driver = {
+	.driver = {
+			.name = "ad1980",
+	},
+
+	.probe = ad1980_probe,
+	.remove = ad1980_remove,
+};
+
+module_platform_driver(ad1980_codec_driver);
+
+MODULE_DESCRIPTION("ASoC ad1980 driver (Obsolete)");
+MODULE_AUTHOR("Roy Huang, Cliff Cai");
+MODULE_LICENSE("GPL");