init android origin source code

1 files changed, 179 insertions, 0 deletions

diff --git a/ANDROID_3.4.5/sound/soc/codecs/pcm3008.c b/ANDROID_3.4.5/sound/soc/codecs/pcm3008.c
new file mode 100644
index 00000000..edcaa7ea
--- /dev/null
+++ b/ANDROID_3.4.5/sound/soc/codecs/pcm3008.c
@@ -0,0 +1,179 @@
+/*
+ * ALSA Soc PCM3008 codec support
+ *
+ * Author:	Hugo Villeneuve
+ * Copyright (C) 2008 Lyrtech inc
+ *
+ * Based on AC97 Soc codec, original copyright follow:
+ * Copyright 2005 Wolfson Microelectronics PLC.
+ *
+ *  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.
+ *
+ * Generic PCM3008 support.
+ */
+
+#include <linux/init.h>
+#include <linux/kernel.h>
+#include <linux/device.h>
+#include <linux/gpio.h>
+#include <linux/slab.h>
+#include <linux/module.h>
+#include <sound/core.h>
+#include <sound/pcm.h>
+#include <sound/initval.h>
+#include <sound/soc.h>
+
+#include "pcm3008.h"
+
+#define PCM3008_VERSION "0.2"
+
+#define PCM3008_RATES (SNDRV_PCM_RATE_32000 | SNDRV_PCM_RATE_44100 |	\
+		       SNDRV_PCM_RATE_48000)
+
+static struct snd_soc_dai_driver pcm3008_dai = {
+	.name = "pcm3008-hifi",
+	.playback = {
+		.stream_name = "PCM3008 Playback",
+		.channels_min = 1,
+		.channels_max = 2,
+		.rates = PCM3008_RATES,
+		.formats = SNDRV_PCM_FMTBIT_S16_LE,
+	},
+	.capture = {
+		.stream_name = "PCM3008 Capture",
+		.channels_min = 1,
+		.channels_max = 2,
+		.rates = PCM3008_RATES,
+		.formats = SNDRV_PCM_FMTBIT_S16_LE,
+	},
+};
+
+static void pcm3008_gpio_free(struct pcm3008_setup_data *setup)
+{
+	gpio_free(setup->dem0_pin);
+	gpio_free(setup->dem1_pin);
+	gpio_free(setup->pdad_pin);
+	gpio_free(setup->pdda_pin);
+}
+
+static int pcm3008_soc_probe(struct snd_soc_codec *codec)
+{
+	struct pcm3008_setup_data *setup = codec->dev->platform_data;
+	int ret = 0;
+
+	printk(KERN_INFO "PCM3008 SoC Audio Codec %s\n", PCM3008_VERSION);
+
+	/* DEM1  DEM0  DE-EMPHASIS_MODE
+	 * Low   Low   De-emphasis 44.1 kHz ON
+	 * Low   High  De-emphasis OFF
+	 * High  Low   De-emphasis 48 kHz ON
+	 * High  High  De-emphasis 32 kHz ON
+	 */
+
+	/* Configure DEM0 GPIO (turning OFF DAC De-emphasis). */
+	ret = gpio_request(setup->dem0_pin, "codec_dem0");
+	if (ret == 0)
+		ret = gpio_direction_output(setup->dem0_pin, 1);
+	if (ret != 0)
+		goto gpio_err;
+
+	/* Configure DEM1 GPIO (turning OFF DAC De-emphasis). */
+	ret = gpio_request(setup->dem1_pin, "codec_dem1");
+	if (ret == 0)
+		ret = gpio_direction_output(setup->dem1_pin, 0);
+	if (ret != 0)
+		goto gpio_err;
+
+	/* Configure PDAD GPIO. */
+	ret = gpio_request(setup->pdad_pin, "codec_pdad");
+	if (ret == 0)
+		ret = gpio_direction_output(setup->pdad_pin, 1);
+	if (ret != 0)
+		goto gpio_err;
+
+	/* Configure PDDA GPIO. */
+	ret = gpio_request(setup->pdda_pin, "codec_pdda");
+	if (ret == 0)
+		ret = gpio_direction_output(setup->pdda_pin, 1);
+	if (ret != 0)
+		goto gpio_err;
+
+	return ret;
+
+gpio_err:
+	pcm3008_gpio_free(setup);
+
+	return ret;
+}
+
+static int pcm3008_soc_remove(struct snd_soc_codec *codec)
+{
+	struct pcm3008_setup_data *setup = codec->dev->platform_data;
+
+	pcm3008_gpio_free(setup);
+	return 0;
+}
+
+#ifdef CONFIG_PM
+static int pcm3008_soc_suspend(struct snd_soc_codec *codec)
+{
+	struct pcm3008_setup_data *setup = codec->dev->platform_data;
+
+	gpio_set_value(setup->pdad_pin, 0);
+	gpio_set_value(setup->pdda_pin, 0);
+
+	return 0;
+}
+
+static int pcm3008_soc_resume(struct snd_soc_codec *codec)
+{
+	struct pcm3008_setup_data *setup = codec->dev->platform_data;
+
+	gpio_set_value(setup->pdad_pin, 1);
+	gpio_set_value(setup->pdda_pin, 1);
+
+	return 0;
+}
+#else
+#define pcm3008_soc_suspend NULL
+#define pcm3008_soc_resume NULL
+#endif
+
+static struct snd_soc_codec_driver soc_codec_dev_pcm3008 = {
+	.probe = 	pcm3008_soc_probe,
+	.remove = 	pcm3008_soc_remove,
+	.suspend =	pcm3008_soc_suspend,
+	.resume =	pcm3008_soc_resume,
+};
+
+static int __devinit pcm3008_codec_probe(struct platform_device *pdev)
+{
+	return snd_soc_register_codec(&pdev->dev,
+			&soc_codec_dev_pcm3008, &pcm3008_dai, 1);
+}
+
+static int __devexit pcm3008_codec_remove(struct platform_device *pdev)
+{
+	snd_soc_unregister_codec(&pdev->dev);
+	return 0;
+}
+
+MODULE_ALIAS("platform:pcm3008-codec");
+
+static struct platform_driver pcm3008_codec_driver = {
+	.probe		= pcm3008_codec_probe,
+	.remove		= __devexit_p(pcm3008_codec_remove),
+	.driver		= {
+		.name	= "pcm3008-codec",
+		.owner	= THIS_MODULE,
+	},
+};
+
+module_platform_driver(pcm3008_codec_driver);
+
+MODULE_DESCRIPTION("Soc PCM3008 driver");
+MODULE_AUTHOR("Hugo Villeneuve");
+MODULE_LICENSE("GPL");