sound/soc/pxa/hx4700.c - kernel/msm-4.9 - Gitiles

 /*
  * SoC audio for HP iPAQ hx4700
  *
  * Copyright (c) 2009 Philipp Zabel
  *
  *  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 <linux/module.h>
 #include <linux/timer.h>
 #include <linux/interrupt.h>
 #include <linux/platform_device.h>
 #include <linux/delay.h>
 #include <linux/gpio.h>

 #include <sound/core.h>
 #include <sound/jack.h>
 #include <sound/pcm.h>
 #include <sound/pcm_params.h>
 #include <sound/soc.h>

 #include <mach/hx4700.h>
 #include <asm/mach-types.h>
 #include "pxa2xx-i2s.h"

 #include "../codecs/ak4641.h"

 static struct snd_soc_jack hs_jack;

 /* Headphones jack detection DAPM pin */
 static struct snd_soc_jack_pin hs_jack_pin[] = {
 	{
 		.pin	= "Headphone Jack",
 		.mask	= SND_JACK_HEADPHONE,
 	},
 	{
 		.pin	= "Speaker",
 		/* disable speaker when hp jack is inserted */
 		.mask   = SND_JACK_HEADPHONE,
 		.invert	= 1,
 	},
 };

 /* Headphones jack detection GPIO */
 static struct snd_soc_jack_gpio hs_jack_gpio = {
 	.gpio		= GPIO75_HX4700_EARPHONE_nDET,
 	.invert		= true,
 	.name		= "hp-gpio",
 	.report		= SND_JACK_HEADPHONE,
 	.debounce_time	= 200,
 };

 /*
  * iPAQ hx4700 uses I2S for capture and playback.
  */
 static int hx4700_hw_params(struct snd_pcm_substream *substream,
 			    struct snd_pcm_hw_params *params)
 {
 	struct snd_soc_pcm_runtime *rtd = substream->private_data;
 	struct snd_soc_dai *codec_dai = rtd->codec_dai;
 	struct snd_soc_dai *cpu_dai = rtd->cpu_dai;
 	int ret = 0;

 	/* set codec DAI configuration */
 	ret = snd_soc_dai_set_fmt(codec_dai,
 			SND_SOC_DAIFMT_MSB | SND_SOC_DAIFMT_NB_NF |
 			SND_SOC_DAIFMT_CBS_CFS);
 	if (ret < 0)
 		return ret;

 	/* set cpu DAI configuration */
 	ret = snd_soc_dai_set_fmt(cpu_dai,
 			SND_SOC_DAIFMT_MSB | SND_SOC_DAIFMT_NB_NF |
 			SND_SOC_DAIFMT_CBS_CFS);
 	if (ret < 0)
 		return ret;

 	/* set the I2S system clock as output */
 	ret = snd_soc_dai_set_sysclk(cpu_dai, PXA2XX_I2S_SYSCLK, 0,
 			SND_SOC_CLOCK_OUT);
 	if (ret < 0)
 		return ret;

 	/* inform codec driver about clock freq *
 	 * (PXA I2S always uses divider 256)    */
 	ret = snd_soc_dai_set_sysclk(codec_dai, 0, 256 * params_rate(params),
 			SND_SOC_CLOCK_IN);
 	if (ret < 0)
 		return ret;

 	return 0;
 }

 static struct snd_soc_ops hx4700_ops = {
 	.hw_params = hx4700_hw_params,
 };

 static int hx4700_spk_power(struct snd_soc_dapm_widget *w,
 			    struct snd_kcontrol *k, int event)
 {
 	gpio_set_value(GPIO107_HX4700_SPK_nSD, !!SND_SOC_DAPM_EVENT_ON(event));
 	return 0;
 }

 static int hx4700_hp_power(struct snd_soc_dapm_widget *w,
 			   struct snd_kcontrol *k, int event)
 {
 	gpio_set_value(GPIO92_HX4700_HP_DRIVER, !!SND_SOC_DAPM_EVENT_ON(event));
 	return 0;
 }

 /* hx4700 machine dapm widgets */
 static const struct snd_soc_dapm_widget hx4700_dapm_widgets[] = {
 	SND_SOC_DAPM_HP("Headphone Jack", hx4700_hp_power),
 	SND_SOC_DAPM_SPK("Speaker", hx4700_spk_power),
 	SND_SOC_DAPM_MIC("Built-in Microphone", NULL),
 };

 /* hx4700 machine audio_map */
 static const struct snd_soc_dapm_route hx4700_audio_map[] = {

 	/* Headphone connected to LOUT, ROUT */
 	{"Headphone Jack", NULL, "LOUT"},
 	{"Headphone Jack", NULL, "ROUT"},

 	/* Speaker connected to MOUT2 */
 	{"Speaker", NULL, "MOUT2"},

 	/* Microphone connected to MICIN */
 	{"MICIN", NULL, "Built-in Microphone"},
 	{"AIN", NULL, "MICOUT"},
 };

 /*
  * Logic for a ak4641 as connected on a HP iPAQ hx4700
  */
 static int hx4700_ak4641_init(struct snd_soc_pcm_runtime *rtd)
 {
 	struct snd_soc_codec *codec = rtd->codec;
 	struct snd_soc_dapm_context *dapm = &codec->dapm;
 	int err;

 	/* NC codec pins */
 	/* FIXME: is anything connected here? */
 	snd_soc_dapm_nc_pin(dapm, "MOUT1");
 	snd_soc_dapm_nc_pin(dapm, "MICEXT");
 	snd_soc_dapm_nc_pin(dapm, "AUX");

 	/* Jack detection API stuff */
 	err = snd_soc_jack_new(codec, "Headphone Jack",
 				SND_JACK_HEADPHONE, &hs_jack);
 	if (err)
 		return err;

 	err = snd_soc_jack_add_pins(&hs_jack, ARRAY_SIZE(hs_jack_pin),
 					hs_jack_pin);
 	if (err)
 		return err;

 	err = snd_soc_jack_add_gpios(&hs_jack, 1, &hs_jack_gpio);

 	return err;
 }

 /* hx4700 digital audio interface glue - connects codec <--> CPU */
 static struct snd_soc_dai_link hx4700_dai = {
 	.name = "ak4641",
 	.stream_name = "AK4641",
 	.cpu_dai_name = "pxa2xx-i2s",
 	.codec_dai_name = "ak4641-hifi",
 	.platform_name = "pxa-pcm-audio",
 	.codec_name = "ak4641.0-0012",
 	.init = hx4700_ak4641_init,
 	.ops = &hx4700_ops,
 };

 /* hx4700 audio machine driver */
 static struct snd_soc_card snd_soc_card_hx4700 = {
 	.name			= "iPAQ hx4700",
 	.dai_link		= &hx4700_dai,
 	.num_links		= 1,
 	.dapm_widgets		= hx4700_dapm_widgets,
 	.num_dapm_widgets	= ARRAY_SIZE(hx4700_dapm_widgets),
 	.dapm_routes		= hx4700_audio_map,
 	.num_dapm_routes	= ARRAY_SIZE(hx4700_audio_map),
 };

 static struct gpio hx4700_audio_gpios[] = {
 	{ GPIO107_HX4700_SPK_nSD, GPIOF_OUT_INIT_HIGH, "SPK_POWER" },
 	{ GPIO92_HX4700_HP_DRIVER, GPIOF_OUT_INIT_LOW, "EP_POWER" },
 };

 static int __devinit hx4700_audio_probe(struct platform_device *pdev)
 {
 	int ret;

 	if (!machine_is_h4700())
 		return -ENODEV;

 	ret = gpio_request_array(hx4700_audio_gpios,
 				ARRAY_SIZE(hx4700_audio_gpios));
 	if (ret)
 		return ret;

 	snd_soc_card_hx4700.dev = &pdev->dev;
 	ret = snd_soc_register_card(&snd_soc_card_hx4700);
 	if (ret)
 		return ret;

 	return 0;
 }

 static int __devexit hx4700_audio_remove(struct platform_device *pdev)
 {
 	snd_soc_jack_free_gpios(&hs_jack, 1, &hs_jack_gpio);
 	snd_soc_unregister_card(&snd_soc_card_hx4700);

 	gpio_set_value(GPIO92_HX4700_HP_DRIVER, 0);
 	gpio_set_value(GPIO107_HX4700_SPK_nSD, 0);

 	gpio_free_array(hx4700_audio_gpios, ARRAY_SIZE(hx4700_audio_gpios));
 	return 0;
 }

 static struct platform_driver hx4700_audio_driver = {
 	.driver	= {
 		.name = "hx4700-audio",
 		.owner = THIS_MODULE,
 		.pm = &snd_soc_pm_ops,
 	},
 	.probe	= hx4700_audio_probe,
 	.remove	= __devexit_p(hx4700_audio_remove),
 };

 static int __init hx4700_modinit(void)
 {
 	return platform_driver_register(&hx4700_audio_driver);
 }
 module_init(hx4700_modinit);

 static void __exit hx4700_modexit(void)
 {
 	platform_driver_unregister(&hx4700_audio_driver);
 }

 module_exit(hx4700_modexit);

 MODULE_AUTHOR("Philipp Zabel");
 MODULE_DESCRIPTION("ALSA SoC iPAQ hx4700");
 MODULE_LICENSE("GPL");
 MODULE_ALIAS("platform:hx4700-audio");
	/*
	* SoC audio for HP iPAQ hx4700
	*
	* Copyright (c) 2009 Philipp Zabel
	*
	* 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 <linux/module.h>
	#include <linux/timer.h>
	#include <linux/interrupt.h>
	#include <linux/platform_device.h>
	#include <linux/delay.h>
	#include <linux/gpio.h>

	#include <sound/core.h>
	#include <sound/jack.h>
	#include <sound/pcm.h>
	#include <sound/pcm_params.h>
	#include <sound/soc.h>

	#include <mach/hx4700.h>
	#include <asm/mach-types.h>
	#include "pxa2xx-i2s.h"

	#include "../codecs/ak4641.h"

	static struct snd_soc_jack hs_jack;

	/* Headphones jack detection DAPM pin */
	static struct snd_soc_jack_pin hs_jack_pin[] = {
	{
	.pin = "Headphone Jack",
	.mask = SND_JACK_HEADPHONE,
	},
	{
	.pin = "Speaker",
	/* disable speaker when hp jack is inserted */
	.mask = SND_JACK_HEADPHONE,
	.invert = 1,
	},
	};

	/* Headphones jack detection GPIO */
	static struct snd_soc_jack_gpio hs_jack_gpio = {
	.gpio = GPIO75_HX4700_EARPHONE_nDET,
	.invert = true,
	.name = "hp-gpio",
	.report = SND_JACK_HEADPHONE,
	.debounce_time = 200,
	};

	/*
	* iPAQ hx4700 uses I2S for capture and playback.
	*/
	static int hx4700_hw_params(struct snd_pcm_substream *substream,
	struct snd_pcm_hw_params *params)
	{
	struct snd_soc_pcm_runtime *rtd = substream->private_data;
	struct snd_soc_dai *codec_dai = rtd->codec_dai;
	struct snd_soc_dai *cpu_dai = rtd->cpu_dai;
	int ret = 0;

	/* set codec DAI configuration */
	ret = snd_soc_dai_set_fmt(codec_dai,
	SND_SOC_DAIFMT_MSB \| SND_SOC_DAIFMT_NB_NF \|
	SND_SOC_DAIFMT_CBS_CFS);
	if (ret < 0)
	return ret;

	/* set cpu DAI configuration */
	ret = snd_soc_dai_set_fmt(cpu_dai,
	SND_SOC_DAIFMT_MSB \| SND_SOC_DAIFMT_NB_NF \|
	SND_SOC_DAIFMT_CBS_CFS);
	if (ret < 0)
	return ret;

	/* set the I2S system clock as output */
	ret = snd_soc_dai_set_sysclk(cpu_dai, PXA2XX_I2S_SYSCLK, 0,
	SND_SOC_CLOCK_OUT);
	if (ret < 0)
	return ret;

	/* inform codec driver about clock freq *
	* (PXA I2S always uses divider 256) */
	ret = snd_soc_dai_set_sysclk(codec_dai, 0, 256 * params_rate(params),
	SND_SOC_CLOCK_IN);
	if (ret < 0)
	return ret;

	return 0;
	}

	static struct snd_soc_ops hx4700_ops = {
	.hw_params = hx4700_hw_params,
	};

	static int hx4700_spk_power(struct snd_soc_dapm_widget *w,
	struct snd_kcontrol *k, int event)
	{
	gpio_set_value(GPIO107_HX4700_SPK_nSD, !!SND_SOC_DAPM_EVENT_ON(event));
	return 0;
	}

	static int hx4700_hp_power(struct snd_soc_dapm_widget *w,
	struct snd_kcontrol *k, int event)
	{
	gpio_set_value(GPIO92_HX4700_HP_DRIVER, !!SND_SOC_DAPM_EVENT_ON(event));
	return 0;
	}

	/* hx4700 machine dapm widgets */
	static const struct snd_soc_dapm_widget hx4700_dapm_widgets[] = {
	SND_SOC_DAPM_HP("Headphone Jack", hx4700_hp_power),
	SND_SOC_DAPM_SPK("Speaker", hx4700_spk_power),
	SND_SOC_DAPM_MIC("Built-in Microphone", NULL),
	};

	/* hx4700 machine audio_map */
	static const struct snd_soc_dapm_route hx4700_audio_map[] = {

	/* Headphone connected to LOUT, ROUT */
	{"Headphone Jack", NULL, "LOUT"},
	{"Headphone Jack", NULL, "ROUT"},

	/* Speaker connected to MOUT2 */
	{"Speaker", NULL, "MOUT2"},

	/* Microphone connected to MICIN */
	{"MICIN", NULL, "Built-in Microphone"},
	{"AIN", NULL, "MICOUT"},
	};

	/*
	* Logic for a ak4641 as connected on a HP iPAQ hx4700
	*/
	static int hx4700_ak4641_init(struct snd_soc_pcm_runtime *rtd)
	{
	struct snd_soc_codec *codec = rtd->codec;
	struct snd_soc_dapm_context *dapm = &codec->dapm;
	int err;

	/* NC codec pins */
	/* FIXME: is anything connected here? */
	snd_soc_dapm_nc_pin(dapm, "MOUT1");
	snd_soc_dapm_nc_pin(dapm, "MICEXT");
	snd_soc_dapm_nc_pin(dapm, "AUX");

	/* Jack detection API stuff */
	err = snd_soc_jack_new(codec, "Headphone Jack",
	SND_JACK_HEADPHONE, &hs_jack);
	if (err)
	return err;

	err = snd_soc_jack_add_pins(&hs_jack, ARRAY_SIZE(hs_jack_pin),
	hs_jack_pin);
	if (err)
	return err;

	err = snd_soc_jack_add_gpios(&hs_jack, 1, &hs_jack_gpio);

	return err;
	}

	/* hx4700 digital audio interface glue - connects codec <--> CPU */
	static struct snd_soc_dai_link hx4700_dai = {
	.name = "ak4641",
	.stream_name = "AK4641",
	.cpu_dai_name = "pxa2xx-i2s",
	.codec_dai_name = "ak4641-hifi",
	.platform_name = "pxa-pcm-audio",
	.codec_name = "ak4641.0-0012",
	.init = hx4700_ak4641_init,
	.ops = &hx4700_ops,
	};

	/* hx4700 audio machine driver */
	static struct snd_soc_card snd_soc_card_hx4700 = {
	.name = "iPAQ hx4700",
	.dai_link = &hx4700_dai,
	.num_links = 1,
	.dapm_widgets = hx4700_dapm_widgets,
	.num_dapm_widgets = ARRAY_SIZE(hx4700_dapm_widgets),
	.dapm_routes = hx4700_audio_map,
	.num_dapm_routes = ARRAY_SIZE(hx4700_audio_map),
	};

	static struct gpio hx4700_audio_gpios[] = {
	{ GPIO107_HX4700_SPK_nSD, GPIOF_OUT_INIT_HIGH, "SPK_POWER" },
	{ GPIO92_HX4700_HP_DRIVER, GPIOF_OUT_INIT_LOW, "EP_POWER" },
	};

	static int __devinit hx4700_audio_probe(struct platform_device *pdev)
	{
	int ret;

	if (!machine_is_h4700())
	return -ENODEV;

	ret = gpio_request_array(hx4700_audio_gpios,
	ARRAY_SIZE(hx4700_audio_gpios));
	if (ret)
	return ret;

	snd_soc_card_hx4700.dev = &pdev->dev;
	ret = snd_soc_register_card(&snd_soc_card_hx4700);
	if (ret)
	return ret;

	return 0;
	}

	static int __devexit hx4700_audio_remove(struct platform_device *pdev)
	{
	snd_soc_jack_free_gpios(&hs_jack, 1, &hs_jack_gpio);
	snd_soc_unregister_card(&snd_soc_card_hx4700);

	gpio_set_value(GPIO92_HX4700_HP_DRIVER, 0);
	gpio_set_value(GPIO107_HX4700_SPK_nSD, 0);

	gpio_free_array(hx4700_audio_gpios, ARRAY_SIZE(hx4700_audio_gpios));
	return 0;
	}

	static struct platform_driver hx4700_audio_driver = {
	.driver = {
	.name = "hx4700-audio",
	.owner = THIS_MODULE,
	.pm = &snd_soc_pm_ops,
	},
	.probe = hx4700_audio_probe,
	.remove = __devexit_p(hx4700_audio_remove),
	};

	static int __init hx4700_modinit(void)
	{
	return platform_driver_register(&hx4700_audio_driver);
	}
	module_init(hx4700_modinit);

	static void __exit hx4700_modexit(void)
	{
	platform_driver_unregister(&hx4700_audio_driver);
	}

	module_exit(hx4700_modexit);

	MODULE_AUTHOR("Philipp Zabel");
	MODULE_DESCRIPTION("ALSA SoC iPAQ hx4700");
	MODULE_LICENSE("GPL");
	MODULE_ALIAS("platform:hx4700-audio");