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, 347 insertions, 0 deletions

diff --git a/kernel/sound/soc/samsung/speyside.c b/kernel/sound/soc/samsung/speyside.c
new file mode 100644
index 000000000..2dcb988bd
--- /dev/null
+++ b/kernel/sound/soc/samsung/speyside.c
@@ -0,0 +1,347 @@
+/*
+ * Speyside audio support
+ *
+ * Copyright 2011 Wolfson Microelectronics
+ *
+ * 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 <sound/soc.h>
+#include <sound/soc-dapm.h>
+#include <sound/jack.h>
+#include <linux/gpio.h>
+#include <linux/module.h>
+
+#include "../codecs/wm8996.h"
+#include "../codecs/wm9081.h"
+
+#define WM8996_HPSEL_GPIO 214
+#define MCLK_AUDIO_RATE (512 * 48000)
+
+static int speyside_set_bias_level(struct snd_soc_card *card,
+				   struct snd_soc_dapm_context *dapm,
+				   enum snd_soc_bias_level level)
+{
+	struct snd_soc_dai *codec_dai = card->rtd[1].codec_dai;
+	int ret;
+
+	if (dapm->dev != codec_dai->dev)
+		return 0;
+
+	switch (level) {
+	case SND_SOC_BIAS_STANDBY:
+		ret = snd_soc_dai_set_sysclk(codec_dai, WM8996_SYSCLK_MCLK2,
+					     32768, SND_SOC_CLOCK_IN);
+		if (ret < 0)
+			return ret;
+
+		ret = snd_soc_dai_set_pll(codec_dai, WM8996_FLL_MCLK2,
+					  0, 0, 0);
+		if (ret < 0) {
+			pr_err("Failed to stop FLL\n");
+			return ret;
+		}
+		break;
+
+	default:
+		break;
+	}
+
+	return 0;
+}
+
+static int speyside_set_bias_level_post(struct snd_soc_card *card,
+					struct snd_soc_dapm_context *dapm,
+					enum snd_soc_bias_level level)
+{
+	struct snd_soc_dai *codec_dai = card->rtd[1].codec_dai;
+	int ret;
+
+	if (dapm->dev != codec_dai->dev)
+		return 0;
+
+	switch (level) {
+	case SND_SOC_BIAS_PREPARE:
+		if (card->dapm.bias_level == SND_SOC_BIAS_STANDBY) {
+			ret = snd_soc_dai_set_pll(codec_dai, 0,
+						  WM8996_FLL_MCLK2,
+						  32768, MCLK_AUDIO_RATE);
+			if (ret < 0) {
+				pr_err("Failed to start FLL\n");
+				return ret;
+			}
+
+			ret = snd_soc_dai_set_sysclk(codec_dai,
+						     WM8996_SYSCLK_FLL,
+						     MCLK_AUDIO_RATE,
+						     SND_SOC_CLOCK_IN);
+			if (ret < 0)
+				return ret;
+		}
+		break;
+
+	default:
+		break;
+	}
+
+	card->dapm.bias_level = level;
+
+	return 0;
+}
+
+static struct snd_soc_jack speyside_headset;
+
+/* Headset jack detection DAPM pins */
+static struct snd_soc_jack_pin speyside_headset_pins[] = {
+	{
+		.pin = "Headset Mic",
+		.mask = SND_JACK_MICROPHONE,
+	},
+};
+
+/* Default the headphone selection to active high */
+static int speyside_jack_polarity;
+
+static int speyside_get_micbias(struct snd_soc_dapm_widget *source,
+				struct snd_soc_dapm_widget *sink)
+{
+	if (speyside_jack_polarity && (strcmp(source->name, "MICB1") == 0))
+		return 1;
+	if (!speyside_jack_polarity && (strcmp(source->name, "MICB2") == 0))
+		return 1;
+
+	return 0;
+}
+
+static void speyside_set_polarity(struct snd_soc_codec *codec,
+				  int polarity)
+{
+	speyside_jack_polarity = !polarity;
+	gpio_direction_output(WM8996_HPSEL_GPIO, speyside_jack_polarity);
+
+	/* Re-run DAPM to make sure we're using the correct mic bias */
+	snd_soc_dapm_sync(&codec->dapm);
+}
+
+static int speyside_wm0010_init(struct snd_soc_pcm_runtime *rtd)
+{
+	struct snd_soc_dai *dai = rtd->codec_dai;
+	int ret;
+
+	ret = snd_soc_dai_set_sysclk(dai, 0, MCLK_AUDIO_RATE, 0);
+	if (ret < 0)
+		return ret;
+
+	return 0;
+}
+
+static int speyside_wm8996_init(struct snd_soc_pcm_runtime *rtd)
+{
+	struct snd_soc_dai *dai = rtd->codec_dai;
+	struct snd_soc_codec *codec = rtd->codec;
+	int ret;
+
+	ret = snd_soc_dai_set_sysclk(dai, WM8996_SYSCLK_MCLK2, 32768, 0);
+	if (ret < 0)
+		return ret;
+
+	ret = gpio_request(WM8996_HPSEL_GPIO, "HP_SEL");
+	if (ret != 0)
+		pr_err("Failed to request HP_SEL GPIO: %d\n", ret);
+	gpio_direction_output(WM8996_HPSEL_GPIO, speyside_jack_polarity);
+
+	ret = snd_soc_card_jack_new(rtd->card, "Headset", SND_JACK_LINEOUT |
+				    SND_JACK_HEADSET | SND_JACK_BTN_0,
+				    &speyside_headset, speyside_headset_pins,
+				    ARRAY_SIZE(speyside_headset_pins));
+	if (ret)
+		return ret;
+
+	wm8996_detect(codec, &speyside_headset, speyside_set_polarity);
+
+	return 0;
+}
+
+static int speyside_late_probe(struct snd_soc_card *card)
+{
+	snd_soc_dapm_ignore_suspend(&card->dapm, "Headphone");
+	snd_soc_dapm_ignore_suspend(&card->dapm, "Headset Mic");
+	snd_soc_dapm_ignore_suspend(&card->dapm, "Main AMIC");
+	snd_soc_dapm_ignore_suspend(&card->dapm, "Main DMIC");
+	snd_soc_dapm_ignore_suspend(&card->dapm, "Main Speaker");
+	snd_soc_dapm_ignore_suspend(&card->dapm, "WM1250 Output");
+	snd_soc_dapm_ignore_suspend(&card->dapm, "WM1250 Input");
+
+	return 0;
+}
+
+static const struct snd_soc_pcm_stream dsp_codec_params = {
+	.formats = SNDRV_PCM_FMTBIT_S32_LE,
+	.rate_min = 48000,
+	.rate_max = 48000,
+	.channels_min = 2,
+	.channels_max = 2,
+};
+
+static struct snd_soc_dai_link speyside_dai[] = {
+	{
+		.name = "CPU-DSP",
+		.stream_name = "CPU-DSP",
+		.cpu_dai_name = "samsung-i2s.0",
+		.codec_dai_name = "wm0010-sdi1",
+		.platform_name = "samsung-i2s.0",
+		.codec_name = "spi0.0",
+		.init = speyside_wm0010_init,
+		.dai_fmt = SND_SOC_DAIFMT_I2S | SND_SOC_DAIFMT_NB_NF
+				| SND_SOC_DAIFMT_CBM_CFM,
+	},
+	{
+		.name = "DSP-CODEC",
+		.stream_name = "DSP-CODEC",
+		.cpu_dai_name = "wm0010-sdi2",
+		.codec_dai_name = "wm8996-aif1",
+		.codec_name = "wm8996.1-001a",
+		.init = speyside_wm8996_init,
+		.dai_fmt = SND_SOC_DAIFMT_I2S | SND_SOC_DAIFMT_NB_NF
+				| SND_SOC_DAIFMT_CBM_CFM,
+		.params = &dsp_codec_params,
+		.ignore_suspend = 1,
+	},
+	{
+		.name = "Baseband",
+		.stream_name = "Baseband",
+		.cpu_dai_name = "wm8996-aif2",
+		.codec_dai_name = "wm1250-ev1",
+		.codec_name = "wm1250-ev1.1-0027",
+		.dai_fmt = SND_SOC_DAIFMT_I2S | SND_SOC_DAIFMT_NB_NF
+				| SND_SOC_DAIFMT_CBM_CFM,
+		.ignore_suspend = 1,
+	},
+};
+
+static int speyside_wm9081_init(struct snd_soc_component *component)
+{
+	struct snd_soc_codec *codec = snd_soc_component_to_codec(component);
+
+	/* At any time the WM9081 is active it will have this clock */
+	return snd_soc_codec_set_sysclk(codec, WM9081_SYSCLK_MCLK, 0,
+					MCLK_AUDIO_RATE, 0);
+}
+
+static struct snd_soc_aux_dev speyside_aux_dev[] = {
+	{
+		.name = "wm9081",
+		.codec_name = "wm9081.1-006c",
+		.init = speyside_wm9081_init,
+	},
+};
+
+static struct snd_soc_codec_conf speyside_codec_conf[] = {
+	{
+		.dev_name = "wm9081.1-006c",
+		.name_prefix = "Sub",
+	},
+};
+
+static const struct snd_kcontrol_new controls[] = {
+	SOC_DAPM_PIN_SWITCH("Main Speaker"),
+	SOC_DAPM_PIN_SWITCH("Main DMIC"),
+	SOC_DAPM_PIN_SWITCH("Main AMIC"),
+	SOC_DAPM_PIN_SWITCH("WM1250 Input"),
+	SOC_DAPM_PIN_SWITCH("WM1250 Output"),
+	SOC_DAPM_PIN_SWITCH("Headphone"),
+};
+
+static struct snd_soc_dapm_widget widgets[] = {
+	SND_SOC_DAPM_HP("Headphone", NULL),
+	SND_SOC_DAPM_MIC("Headset Mic", NULL),
+
+	SND_SOC_DAPM_SPK("Main Speaker", NULL),
+
+	SND_SOC_DAPM_MIC("Main AMIC", NULL),
+	SND_SOC_DAPM_MIC("Main DMIC", NULL),
+};
+
+static struct snd_soc_dapm_route audio_paths[] = {
+	{ "IN1RN", NULL, "MICB1" },
+	{ "IN1RP", NULL, "MICB1" },
+	{ "IN1RN", NULL, "MICB2" },
+	{ "IN1RP", NULL, "MICB2" },
+	{ "MICB1", NULL, "Headset Mic", speyside_get_micbias },
+	{ "MICB2", NULL, "Headset Mic", speyside_get_micbias },
+
+	{ "IN1LP", NULL, "MICB2" },
+	{ "IN1RN", NULL, "MICB1" },
+	{ "MICB2", NULL, "Main AMIC" },
+
+	{ "DMIC1DAT", NULL, "MICB1" },
+	{ "DMIC2DAT", NULL, "MICB1" },
+	{ "MICB1", NULL, "Main DMIC" },
+
+	{ "Headphone", NULL, "HPOUT1L" },
+	{ "Headphone", NULL, "HPOUT1R" },
+
+	{ "Sub IN1", NULL, "HPOUT2L" },
+	{ "Sub IN2", NULL, "HPOUT2R" },
+
+	{ "Main Speaker", NULL, "Sub SPKN" },
+	{ "Main Speaker", NULL, "Sub SPKP" },
+	{ "Main Speaker", NULL, "SPKDAT" },
+};
+
+static struct snd_soc_card speyside = {
+	.name = "Speyside",
+	.owner = THIS_MODULE,
+	.dai_link = speyside_dai,
+	.num_links = ARRAY_SIZE(speyside_dai),
+	.aux_dev = speyside_aux_dev,
+	.num_aux_devs = ARRAY_SIZE(speyside_aux_dev),
+	.codec_conf = speyside_codec_conf,
+	.num_configs = ARRAY_SIZE(speyside_codec_conf),
+
+	.set_bias_level = speyside_set_bias_level,
+	.set_bias_level_post = speyside_set_bias_level_post,
+
+	.controls = controls,
+	.num_controls = ARRAY_SIZE(controls),
+	.dapm_widgets = widgets,
+	.num_dapm_widgets = ARRAY_SIZE(widgets),
+	.dapm_routes = audio_paths,
+	.num_dapm_routes = ARRAY_SIZE(audio_paths),
+	.fully_routed = true,
+
+	.late_probe = speyside_late_probe,
+};
+
+static int speyside_probe(struct platform_device *pdev)
+{
+	struct snd_soc_card *card = &speyside;
+	int ret;
+
+	card->dev = &pdev->dev;
+
+	ret = devm_snd_soc_register_card(&pdev->dev, card);
+	if (ret)
+		dev_err(&pdev->dev, "snd_soc_register_card() failed: %d\n",
+			ret);
+
+	return ret;
+}
+
+static struct platform_driver speyside_driver = {
+	.driver = {
+		.name = "speyside",
+		.pm = &snd_soc_pm_ops,
+	},
+	.probe = speyside_probe,
+};
+
+module_platform_driver(speyside_driver);
+
+MODULE_DESCRIPTION("Speyside audio support");
+MODULE_AUTHOR("Mark Brown <broonie@opensource.wolfsonmicro.com>");
+MODULE_LICENSE("GPL");
+MODULE_ALIAS("platform:speyside");