Initial import

1 files changed, 242 insertions, 0 deletions

diff --git a/sound/soc/samsung/tobermory.c b/sound/soc/samsung/tobermory.c
new file mode 100644
index 000000000..85ccfb718
--- /dev/null
+++ b/sound/soc/samsung/tobermory.c
@@ -0,0 +1,242 @@
+/*
+ * Tobermory 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/wm8962.h"
+
+static int sample_rate = 44100;
+
+static int tobermory_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[0].codec_dai;
+	int ret;
+
+	if (dapm->dev != codec_dai->dev)
+		return 0;
+
+	switch (level) {
+	case SND_SOC_BIAS_PREPARE:
+		if (dapm->bias_level == SND_SOC_BIAS_STANDBY) {
+			ret = snd_soc_dai_set_pll(codec_dai, WM8962_FLL,
+						  WM8962_FLL_MCLK, 32768,
+						  sample_rate * 512);
+			if (ret < 0)
+				pr_err("Failed to start FLL: %d\n", ret);
+
+			ret = snd_soc_dai_set_sysclk(codec_dai,
+						     WM8962_SYSCLK_FLL,
+						     sample_rate * 512,
+						     SND_SOC_CLOCK_IN);
+			if (ret < 0) {
+				pr_err("Failed to set SYSCLK: %d\n", ret);
+				snd_soc_dai_set_pll(codec_dai, WM8962_FLL,
+						    0, 0, 0);
+				return ret;
+			}
+		}
+		break;
+
+	default:
+		break;
+	}
+
+	return 0;
+}
+
+static int tobermory_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[0].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, WM8962_SYSCLK_MCLK,
+					     32768, SND_SOC_CLOCK_IN);
+		if (ret < 0) {
+			pr_err("Failed to switch away from FLL: %d\n", ret);
+			return ret;
+		}
+
+		ret = snd_soc_dai_set_pll(codec_dai, WM8962_FLL,
+					  0, 0, 0);
+		if (ret < 0) {
+			pr_err("Failed to stop FLL: %d\n", ret);
+			return ret;
+		}
+		break;
+
+	default:
+		break;
+	}
+
+	dapm->bias_level = level;
+
+	return 0;
+}
+
+static int tobermory_hw_params(struct snd_pcm_substream *substream,
+			      struct snd_pcm_hw_params *params)
+{
+	sample_rate = params_rate(params);
+
+	return 0;
+}
+
+static struct snd_soc_ops tobermory_ops = {
+	.hw_params = tobermory_hw_params,
+};
+
+static struct snd_soc_dai_link tobermory_dai[] = {
+	{
+		.name = "CPU",
+		.stream_name = "CPU",
+		.cpu_dai_name = "samsung-i2s.0",
+		.codec_dai_name = "wm8962",
+		.platform_name = "samsung-i2s.0",
+		.codec_name = "wm8962.1-001a",
+		.dai_fmt = SND_SOC_DAIFMT_I2S | SND_SOC_DAIFMT_NB_NF
+				| SND_SOC_DAIFMT_CBM_CFM,
+		.ops = &tobermory_ops,
+	},
+};
+
+static const struct snd_kcontrol_new controls[] = {
+	SOC_DAPM_PIN_SWITCH("Main Speaker"),
+	SOC_DAPM_PIN_SWITCH("DMIC"),
+};
+
+static struct snd_soc_dapm_widget widgets[] = {
+	SND_SOC_DAPM_HP("Headphone", NULL),
+	SND_SOC_DAPM_MIC("Headset Mic", NULL),
+
+	SND_SOC_DAPM_MIC("DMIC", NULL),
+	SND_SOC_DAPM_MIC("AMIC", NULL),
+
+	SND_SOC_DAPM_SPK("Main Speaker", NULL),
+};
+
+static struct snd_soc_dapm_route audio_paths[] = {
+	{ "Headphone", NULL, "HPOUTL" },
+	{ "Headphone", NULL, "HPOUTR" },
+
+	{ "Main Speaker", NULL, "SPKOUTL" },
+	{ "Main Speaker", NULL, "SPKOUTR" },
+
+	{ "Headset Mic", NULL, "MICBIAS" },
+	{ "IN4L", NULL, "Headset Mic" },
+	{ "IN4R", NULL, "Headset Mic" },
+
+	{ "AMIC", NULL, "MICBIAS" },
+	{ "IN1L", NULL, "AMIC" },
+	{ "IN1R", NULL, "AMIC" },
+
+	{ "DMIC", NULL, "MICBIAS" },
+	{ "DMICDAT", NULL, "DMIC" },
+};
+
+static struct snd_soc_jack tobermory_headset;
+
+/* Headset jack detection DAPM pins */
+static struct snd_soc_jack_pin tobermory_headset_pins[] = {
+	{
+		.pin = "Headset Mic",
+		.mask = SND_JACK_MICROPHONE,
+	},
+	{
+		.pin = "Headphone",
+		.mask = SND_JACK_MICROPHONE,
+	},
+};
+
+static int tobermory_late_probe(struct snd_soc_card *card)
+{
+	struct snd_soc_codec *codec = card->rtd[0].codec;
+	struct snd_soc_dai *codec_dai = card->rtd[0].codec_dai;
+	int ret;
+
+	ret = snd_soc_dai_set_sysclk(codec_dai, WM8962_SYSCLK_MCLK,
+				     32768, SND_SOC_CLOCK_IN);
+	if (ret < 0)
+		return ret;
+
+	ret = snd_soc_card_jack_new(card, "Headset", SND_JACK_HEADSET |
+				    SND_JACK_BTN_0, &tobermory_headset,
+				    tobermory_headset_pins,
+				    ARRAY_SIZE(tobermory_headset_pins));
+	if (ret)
+		return ret;
+
+	wm8962_mic_detect(codec, &tobermory_headset);
+
+	return 0;
+}
+
+static struct snd_soc_card tobermory = {
+	.name = "Tobermory",
+	.owner = THIS_MODULE,
+	.dai_link = tobermory_dai,
+	.num_links = ARRAY_SIZE(tobermory_dai),
+
+	.set_bias_level = tobermory_set_bias_level,
+	.set_bias_level_post = tobermory_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 = tobermory_late_probe,
+};
+
+static int tobermory_probe(struct platform_device *pdev)
+{
+	struct snd_soc_card *card = &tobermory;
+	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 tobermory_driver = {
+	.driver = {
+		.name = "tobermory",
+		.pm = &snd_soc_pm_ops,
+	},
+	.probe = tobermory_probe,
+};
+
+module_platform_driver(tobermory_driver);
+
+MODULE_DESCRIPTION("Tobermory audio support");
+MODULE_AUTHOR("Mark Brown <broonie@opensource.wolfsonmicro.com>");
+MODULE_LICENSE("GPL");
+MODULE_ALIAS("platform:tobermory");