Add the rt linux 4.1.3-rt3 as base

Import the rt linux 4.1.3-rt3 as OPNFV kvm base.

It's from git://git.kernel.org/pub/scm/linux/kernel/git/rt/linux-rt-devel.git linux-4.1.y-rt and
the base is:

commit 0917f823c59692d751951bf5ea699a2d1e2f26a2
Author: Sebastian Andrzej Siewior <bigeasy@linutronix.de>
Date:   Sat Jul 25 12:13:34 2015 +0200

    Prepare v4.1.3-rt3

    Signed-off-by: Sebastian Andrzej Siewior <bigeasy@linutronix.de>

We lose all the git history this way and it's not good. We
should apply another opnfv project repo in future.

Change-Id: I87543d81c9df70d99c5001fbdf646b202c19f423
Signed-off-by: Yunhong Jiang <yunhong.jiang@intel.com>

1 files changed, 392 insertions, 0 deletions

diff --git a/kernel/sound/soc/codecs/ad193x.c b/kernel/sound/soc/codecs/ad193x.c
new file mode 100644
index 000000000..17c953595
--- /dev/null
+++ b/kernel/sound/soc/codecs/ad193x.c
@@ -0,0 +1,392 @@
+/*
+ * AD193X Audio Codec driver supporting AD1936/7/8/9
+ *
+ * Copyright 2010 Analog Devices Inc.
+ *
+ * Licensed under the GPL-2 or later.
+ */
+
+#include <linux/module.h>
+#include <linux/kernel.h>
+#include <linux/device.h>
+#include <linux/regmap.h>
+#include <linux/slab.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 "ad193x.h"
+
+/* codec private data */
+struct ad193x_priv {
+	struct regmap *regmap;
+	int sysclk;
+};
+
+/*
+ * AD193X volume/mute/de-emphasis etc. controls
+ */
+static const char * const ad193x_deemp[] = {"None", "48kHz", "44.1kHz", "32kHz"};
+
+static SOC_ENUM_SINGLE_DECL(ad193x_deemp_enum, AD193X_DAC_CTRL2, 1,
+			    ad193x_deemp);
+
+static const DECLARE_TLV_DB_MINMAX(adau193x_tlv, -9563, 0);
+
+static const struct snd_kcontrol_new ad193x_snd_controls[] = {
+	/* DAC volume control */
+	SOC_DOUBLE_R_TLV("DAC1 Volume", AD193X_DAC_L1_VOL,
+			AD193X_DAC_R1_VOL, 0, 0xFF, 1, adau193x_tlv),
+	SOC_DOUBLE_R_TLV("DAC2 Volume", AD193X_DAC_L2_VOL,
+			AD193X_DAC_R2_VOL, 0, 0xFF, 1, adau193x_tlv),
+	SOC_DOUBLE_R_TLV("DAC3 Volume", AD193X_DAC_L3_VOL,
+			AD193X_DAC_R3_VOL, 0, 0xFF, 1, adau193x_tlv),
+	SOC_DOUBLE_R_TLV("DAC4 Volume", AD193X_DAC_L4_VOL,
+			AD193X_DAC_R4_VOL, 0, 0xFF, 1, adau193x_tlv),
+
+	/* ADC switch control */
+	SOC_DOUBLE("ADC1 Switch", AD193X_ADC_CTRL0, AD193X_ADCL1_MUTE,
+		AD193X_ADCR1_MUTE, 1, 1),
+	SOC_DOUBLE("ADC2 Switch", AD193X_ADC_CTRL0, AD193X_ADCL2_MUTE,
+		AD193X_ADCR2_MUTE, 1, 1),
+
+	/* DAC switch control */
+	SOC_DOUBLE("DAC1 Switch", AD193X_DAC_CHNL_MUTE, AD193X_DACL1_MUTE,
+		AD193X_DACR1_MUTE, 1, 1),
+	SOC_DOUBLE("DAC2 Switch", AD193X_DAC_CHNL_MUTE, AD193X_DACL2_MUTE,
+		AD193X_DACR2_MUTE, 1, 1),
+	SOC_DOUBLE("DAC3 Switch", AD193X_DAC_CHNL_MUTE, AD193X_DACL3_MUTE,
+		AD193X_DACR3_MUTE, 1, 1),
+	SOC_DOUBLE("DAC4 Switch", AD193X_DAC_CHNL_MUTE, AD193X_DACL4_MUTE,
+		AD193X_DACR4_MUTE, 1, 1),
+
+	/* ADC high-pass filter */
+	SOC_SINGLE("ADC High Pass Filter Switch", AD193X_ADC_CTRL0,
+			AD193X_ADC_HIGHPASS_FILTER, 1, 0),
+
+	/* DAC de-emphasis */
+	SOC_ENUM("Playback Deemphasis", ad193x_deemp_enum),
+};
+
+static const struct snd_soc_dapm_widget ad193x_dapm_widgets[] = {
+	SND_SOC_DAPM_DAC("DAC", "Playback", SND_SOC_NOPM, 0, 0),
+	SND_SOC_DAPM_PGA("DAC Output", AD193X_DAC_CTRL0, 0, 1, NULL, 0),
+	SND_SOC_DAPM_ADC("ADC", "Capture", SND_SOC_NOPM, 0, 0),
+	SND_SOC_DAPM_SUPPLY("PLL_PWR", AD193X_PLL_CLK_CTRL0, 0, 1, NULL, 0),
+	SND_SOC_DAPM_SUPPLY("ADC_PWR", AD193X_ADC_CTRL0, 0, 1, NULL, 0),
+	SND_SOC_DAPM_SUPPLY("SYSCLK", AD193X_PLL_CLK_CTRL0, 7, 0, NULL, 0),
+	SND_SOC_DAPM_VMID("VMID"),
+	SND_SOC_DAPM_OUTPUT("DAC1OUT"),
+	SND_SOC_DAPM_OUTPUT("DAC2OUT"),
+	SND_SOC_DAPM_OUTPUT("DAC3OUT"),
+	SND_SOC_DAPM_OUTPUT("DAC4OUT"),
+	SND_SOC_DAPM_INPUT("ADC1IN"),
+	SND_SOC_DAPM_INPUT("ADC2IN"),
+};
+
+static const struct snd_soc_dapm_route audio_paths[] = {
+	{ "DAC", NULL, "SYSCLK" },
+	{ "DAC Output", NULL, "DAC" },
+	{ "DAC Output", NULL, "VMID" },
+	{ "ADC", NULL, "SYSCLK" },
+	{ "DAC", NULL, "ADC_PWR" },
+	{ "ADC", NULL, "ADC_PWR" },
+	{ "DAC1OUT", NULL, "DAC Output" },
+	{ "DAC2OUT", NULL, "DAC Output" },
+	{ "DAC3OUT", NULL, "DAC Output" },
+	{ "DAC4OUT", NULL, "DAC Output" },
+	{ "ADC", NULL, "ADC1IN" },
+	{ "ADC", NULL, "ADC2IN" },
+	{ "SYSCLK", NULL, "PLL_PWR" },
+};
+
+/*
+ * DAI ops entries
+ */
+
+static int ad193x_mute(struct snd_soc_dai *dai, int mute)
+{
+	struct ad193x_priv *ad193x = snd_soc_codec_get_drvdata(dai->codec);
+
+	if (mute)
+		regmap_update_bits(ad193x->regmap, AD193X_DAC_CTRL2,
+				    AD193X_DAC_MASTER_MUTE,
+				    AD193X_DAC_MASTER_MUTE);
+	else
+		regmap_update_bits(ad193x->regmap, AD193X_DAC_CTRL2,
+				    AD193X_DAC_MASTER_MUTE, 0);
+
+	return 0;
+}
+
+static int ad193x_set_tdm_slot(struct snd_soc_dai *dai, unsigned int tx_mask,
+			       unsigned int rx_mask, int slots, int width)
+{
+	struct ad193x_priv *ad193x = snd_soc_codec_get_drvdata(dai->codec);
+	unsigned int channels;
+
+	switch (slots) {
+	case 2:
+		channels = AD193X_2_CHANNELS;
+		break;
+	case 4:
+		channels = AD193X_4_CHANNELS;
+		break;
+	case 8:
+		channels = AD193X_8_CHANNELS;
+		break;
+	case 16:
+		channels = AD193X_16_CHANNELS;
+		break;
+	default:
+		return -EINVAL;
+	}
+
+	regmap_update_bits(ad193x->regmap, AD193X_DAC_CTRL1,
+		AD193X_DAC_CHAN_MASK, channels << AD193X_DAC_CHAN_SHFT);
+	regmap_update_bits(ad193x->regmap, AD193X_ADC_CTRL2,
+		AD193X_ADC_CHAN_MASK, channels << AD193X_ADC_CHAN_SHFT);
+
+	return 0;
+}
+
+static int ad193x_set_dai_fmt(struct snd_soc_dai *codec_dai,
+		unsigned int fmt)
+{
+	struct ad193x_priv *ad193x = snd_soc_codec_get_drvdata(codec_dai->codec);
+	unsigned int adc_serfmt = 0;
+	unsigned int adc_fmt = 0;
+	unsigned int dac_fmt = 0;
+
+	/* At present, the driver only support AUX ADC mode(SND_SOC_DAIFMT_I2S
+	 * with TDM) and ADC&DAC TDM mode(SND_SOC_DAIFMT_DSP_A)
+	 */
+	switch (fmt & SND_SOC_DAIFMT_FORMAT_MASK) {
+	case SND_SOC_DAIFMT_I2S:
+		adc_serfmt |= AD193X_ADC_SERFMT_TDM;
+		break;
+	case SND_SOC_DAIFMT_DSP_A:
+		adc_serfmt |= AD193X_ADC_SERFMT_AUX;
+		break;
+	default:
+		return -EINVAL;
+	}
+
+	switch (fmt & SND_SOC_DAIFMT_INV_MASK) {
+	case SND_SOC_DAIFMT_NB_NF: /* normal bit clock + frame */
+		break;
+	case SND_SOC_DAIFMT_NB_IF: /* normal bclk + invert frm */
+		adc_fmt |= AD193X_ADC_LEFT_HIGH;
+		dac_fmt |= AD193X_DAC_LEFT_HIGH;
+		break;
+	case SND_SOC_DAIFMT_IB_NF: /* invert bclk + normal frm */
+		adc_fmt |= AD193X_ADC_BCLK_INV;
+		dac_fmt |= AD193X_DAC_BCLK_INV;
+		break;
+	case SND_SOC_DAIFMT_IB_IF: /* invert bclk + frm */
+		adc_fmt |= AD193X_ADC_LEFT_HIGH;
+		adc_fmt |= AD193X_ADC_BCLK_INV;
+		dac_fmt |= AD193X_DAC_LEFT_HIGH;
+		dac_fmt |= AD193X_DAC_BCLK_INV;
+		break;
+	default:
+		return -EINVAL;
+	}
+
+	switch (fmt & SND_SOC_DAIFMT_MASTER_MASK) {
+	case SND_SOC_DAIFMT_CBM_CFM: /* codec clk & frm master */
+		adc_fmt |= AD193X_ADC_LCR_MASTER;
+		adc_fmt |= AD193X_ADC_BCLK_MASTER;
+		dac_fmt |= AD193X_DAC_LCR_MASTER;
+		dac_fmt |= AD193X_DAC_BCLK_MASTER;
+		break;
+	case SND_SOC_DAIFMT_CBS_CFM: /* codec clk slave & frm master */
+		adc_fmt |= AD193X_ADC_LCR_MASTER;
+		dac_fmt |= AD193X_DAC_LCR_MASTER;
+		break;
+	case SND_SOC_DAIFMT_CBM_CFS: /* codec clk master & frame slave */
+		adc_fmt |= AD193X_ADC_BCLK_MASTER;
+		dac_fmt |= AD193X_DAC_BCLK_MASTER;
+		break;
+	case SND_SOC_DAIFMT_CBS_CFS: /* codec clk & frm slave */
+		break;
+	default:
+		return -EINVAL;
+	}
+
+	regmap_update_bits(ad193x->regmap, AD193X_ADC_CTRL1,
+		AD193X_ADC_SERFMT_MASK, adc_serfmt);
+	regmap_update_bits(ad193x->regmap, AD193X_ADC_CTRL2,
+		AD193X_ADC_FMT_MASK, adc_fmt);
+	regmap_update_bits(ad193x->regmap, AD193X_DAC_CTRL1,
+		AD193X_DAC_FMT_MASK, dac_fmt);
+
+	return 0;
+}
+
+static int ad193x_set_dai_sysclk(struct snd_soc_dai *codec_dai,
+		int clk_id, unsigned int freq, int dir)
+{
+	struct snd_soc_codec *codec = codec_dai->codec;
+	struct ad193x_priv *ad193x = snd_soc_codec_get_drvdata(codec);
+	switch (freq) {
+	case 12288000:
+	case 18432000:
+	case 24576000:
+	case 36864000:
+		ad193x->sysclk = freq;
+		return 0;
+	}
+	return -EINVAL;
+}
+
+static int ad193x_hw_params(struct snd_pcm_substream *substream,
+		struct snd_pcm_hw_params *params,
+		struct snd_soc_dai *dai)
+{
+	int word_len = 0, master_rate = 0;
+	struct snd_soc_codec *codec = dai->codec;
+	struct ad193x_priv *ad193x = snd_soc_codec_get_drvdata(codec);
+
+	/* bit size */
+	switch (params_width(params)) {
+	case 16:
+		word_len = 3;
+		break;
+	case 20:
+		word_len = 1;
+		break;
+	case 24:
+	case 32:
+		word_len = 0;
+		break;
+	}
+
+	switch (ad193x->sysclk) {
+	case 12288000:
+		master_rate = AD193X_PLL_INPUT_256;
+		break;
+	case 18432000:
+		master_rate = AD193X_PLL_INPUT_384;
+		break;
+	case 24576000:
+		master_rate = AD193X_PLL_INPUT_512;
+		break;
+	case 36864000:
+		master_rate = AD193X_PLL_INPUT_768;
+		break;
+	}
+
+	regmap_update_bits(ad193x->regmap, AD193X_PLL_CLK_CTRL0,
+			    AD193X_PLL_INPUT_MASK, master_rate);
+
+	regmap_update_bits(ad193x->regmap, AD193X_DAC_CTRL2,
+			    AD193X_DAC_WORD_LEN_MASK,
+			    word_len << AD193X_DAC_WORD_LEN_SHFT);
+
+	regmap_update_bits(ad193x->regmap, AD193X_ADC_CTRL1,
+			    AD193X_ADC_WORD_LEN_MASK, word_len);
+
+	return 0;
+}
+
+static const struct snd_soc_dai_ops ad193x_dai_ops = {
+	.hw_params = ad193x_hw_params,
+	.digital_mute = ad193x_mute,
+	.set_tdm_slot = ad193x_set_tdm_slot,
+	.set_sysclk	= ad193x_set_dai_sysclk,
+	.set_fmt = ad193x_set_dai_fmt,
+};
+
+/* codec DAI instance */
+static struct snd_soc_dai_driver ad193x_dai = {
+	.name = "ad193x-hifi",
+	.playback = {
+		.stream_name = "Playback",
+		.channels_min = 2,
+		.channels_max = 8,
+		.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 = 4,
+		.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 = &ad193x_dai_ops,
+};
+
+static int ad193x_codec_probe(struct snd_soc_codec *codec)
+{
+	struct ad193x_priv *ad193x = snd_soc_codec_get_drvdata(codec);
+
+	/* default setting for ad193x */
+
+	/* unmute dac channels */
+	regmap_write(ad193x->regmap, AD193X_DAC_CHNL_MUTE, 0x0);
+	/* de-emphasis: 48kHz, powedown dac */
+	regmap_write(ad193x->regmap, AD193X_DAC_CTRL2, 0x1A);
+	/* dac in tdm mode */
+	regmap_write(ad193x->regmap, AD193X_DAC_CTRL0, 0x40);
+	/* high-pass filter enable */
+	regmap_write(ad193x->regmap, AD193X_ADC_CTRL0, 0x3);
+	/* sata delay=1, adc aux mode */
+	regmap_write(ad193x->regmap, AD193X_ADC_CTRL1, 0x43);
+	/* pll input: mclki/xi */
+	regmap_write(ad193x->regmap, AD193X_PLL_CLK_CTRL0, 0x99); /* mclk=24.576Mhz: 0x9D; mclk=12.288Mhz: 0x99 */
+	regmap_write(ad193x->regmap, AD193X_PLL_CLK_CTRL1, 0x04);
+
+	return 0;
+}
+
+static struct snd_soc_codec_driver soc_codec_dev_ad193x = {
+	.probe = ad193x_codec_probe,
+	.controls = ad193x_snd_controls,
+	.num_controls = ARRAY_SIZE(ad193x_snd_controls),
+	.dapm_widgets = ad193x_dapm_widgets,
+	.num_dapm_widgets = ARRAY_SIZE(ad193x_dapm_widgets),
+	.dapm_routes = audio_paths,
+	.num_dapm_routes = ARRAY_SIZE(audio_paths),
+};
+
+static bool adau193x_reg_volatile(struct device *dev, unsigned int reg)
+{
+	return false;
+}
+
+const struct regmap_config ad193x_regmap_config = {
+	.max_register = AD193X_NUM_REGS - 1,
+	.volatile_reg = adau193x_reg_volatile,
+};
+EXPORT_SYMBOL_GPL(ad193x_regmap_config);
+
+int ad193x_probe(struct device *dev, struct regmap *regmap)
+{
+	struct ad193x_priv *ad193x;
+
+	if (IS_ERR(regmap))
+		return PTR_ERR(regmap);
+
+	ad193x = devm_kzalloc(dev, sizeof(*ad193x), GFP_KERNEL);
+	if (ad193x == NULL)
+		return -ENOMEM;
+
+	ad193x->regmap = regmap;
+
+	dev_set_drvdata(dev, ad193x);
+
+	return snd_soc_register_codec(dev, &soc_codec_dev_ad193x,
+		&ad193x_dai, 1);
+}
+EXPORT_SYMBOL_GPL(ad193x_probe);
+
+MODULE_DESCRIPTION("ASoC ad193x driver");
+MODULE_AUTHOR("Barry Song <21cnbao@gmail.com>");
+MODULE_LICENSE("GPL");