sound/soc/samsung/smartq_wm8987.c - maze/linux - Git at Google

 /* sound/soc/samsung/smartq_wm8987.c
  *
  * Copyright 2010 Maurus Cuelenaere <mcuelenaere@gmail.com>
  *
  * Based on smdk6410_wm8987.c
  *     Copyright 2007 Wolfson Microelectronics PLC. - linux@wolfsonmicro.com
  *     Graeme Gregory - graeme.gregory@wolfsonmicro.com
  *
  *  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/platform_device.h>
 #include <linux/gpio.h>

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

 #include <asm/mach-types.h>

 #include "dma.h"
 #include "i2s.h"

 #include "../codecs/wm8750.h"

 /*
  * WM8987 is register compatible with WM8750, so using that as base driver.
  */

 static struct snd_soc_card snd_soc_smartq;

 static int smartq_hifi_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;
 	unsigned int clk = 0;
 	int ret;

 	switch (params_rate(params)) {
 	case 8000:
 	case 16000:
 	case 32000:
 	case 48000:
 	case 96000:
 		clk = 12288000;
 		break;
 	case 11025:
 	case 22050:
 	case 44100:
 	case 88200:
 		clk = 11289600;
 		break;
 	}

 	/* set codec DAI configuration */
 	ret = snd_soc_dai_set_fmt(codec_dai, SND_SOC_DAIFMT_I2S |
 					     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_I2S |
 					   SND_SOC_DAIFMT_NB_NF |
 					   SND_SOC_DAIFMT_CBS_CFS);
 	if (ret < 0)
 		return ret;

 	/* Use PCLK for I2S signal generation */
 	ret = snd_soc_dai_set_sysclk(cpu_dai, SAMSUNG_I2S_RCLKSRC_0,
 					0, SND_SOC_CLOCK_IN);
 	if (ret < 0)
 		return ret;

 	/* Gate the RCLK output on PAD */
 	ret = snd_soc_dai_set_sysclk(cpu_dai, SAMSUNG_I2S_CDCLK,
 					0, SND_SOC_CLOCK_IN);
 	if (ret < 0)
 		return ret;

 	/* set the codec system clock for DAC and ADC */
 	ret = snd_soc_dai_set_sysclk(codec_dai, WM8750_SYSCLK, clk,
 				     SND_SOC_CLOCK_IN);
 	if (ret < 0)
 		return ret;

 	return 0;
 }

 /*
  * SmartQ WM8987 HiFi DAI operations.
  */
 static struct snd_soc_ops smartq_hifi_ops = {
 	.hw_params = smartq_hifi_hw_params,
 };

 static struct snd_soc_jack smartq_jack;

 static struct snd_soc_jack_pin smartq_jack_pins[] = {
 	/* Disable speaker when headphone is plugged in */
 	{
 		.pin	= "Internal Speaker",
 		.mask	= SND_JACK_HEADPHONE,
 	},
 };

 static struct snd_soc_jack_gpio smartq_jack_gpios[] = {
 	{
 		.gpio		= S3C64XX_GPL(12),
 		.name		= "headphone detect",
 		.report		= SND_JACK_HEADPHONE,
 		.debounce_time	= 200,
 	},
 };

 static const struct snd_kcontrol_new wm8987_smartq_controls[] = {
 	SOC_DAPM_PIN_SWITCH("Internal Speaker"),
 	SOC_DAPM_PIN_SWITCH("Headphone Jack"),
 	SOC_DAPM_PIN_SWITCH("Internal Mic"),
 };

 static int smartq_speaker_event(struct snd_soc_dapm_widget *w,
 				struct snd_kcontrol *k,
 				int event)
 {
 	gpio_set_value(S3C64XX_GPK(12), SND_SOC_DAPM_EVENT_OFF(event));

 	return 0;
 }

 static const struct snd_soc_dapm_widget wm8987_dapm_widgets[] = {
 	SND_SOC_DAPM_SPK("Internal Speaker", smartq_speaker_event),
 	SND_SOC_DAPM_HP("Headphone Jack", NULL),
 	SND_SOC_DAPM_MIC("Internal Mic", NULL),
 };

 static const struct snd_soc_dapm_route audio_map[] = {
 	{"Headphone Jack", NULL, "LOUT2"},
 	{"Headphone Jack", NULL, "ROUT2"},

 	{"Internal Speaker", NULL, "LOUT2"},
 	{"Internal Speaker", NULL, "ROUT2"},

 	{"Mic Bias", NULL, "Internal Mic"},
 	{"LINPUT2", NULL, "Mic Bias"},
 };

 static int smartq_wm8987_init(struct snd_soc_pcm_runtime *rtd)
 {
 	struct snd_soc_codec *codec = rtd->codec;
 	struct snd_soc_dapm_context *dapm = &codec->dapm;
 	int err = 0;

 	/* Add SmartQ specific widgets */
 	snd_soc_dapm_new_controls(dapm, wm8987_dapm_widgets,
 				  ARRAY_SIZE(wm8987_dapm_widgets));

 	/* add SmartQ specific controls */
 	err = snd_soc_add_controls(codec, wm8987_smartq_controls,
 				   ARRAY_SIZE(wm8987_smartq_controls));

 	if (err < 0)
 		return err;

 	/* setup SmartQ specific audio path */
 	snd_soc_dapm_add_routes(dapm, audio_map, ARRAY_SIZE(audio_map));

 	/* set endpoints to not connected */
 	snd_soc_dapm_nc_pin(dapm, "LINPUT1");
 	snd_soc_dapm_nc_pin(dapm, "RINPUT1");
 	snd_soc_dapm_nc_pin(dapm, "OUT3");
 	snd_soc_dapm_nc_pin(dapm, "ROUT1");

 	/* set endpoints to default off mode */
 	snd_soc_dapm_enable_pin(dapm, "Internal Speaker");
 	snd_soc_dapm_enable_pin(dapm, "Internal Mic");
 	snd_soc_dapm_disable_pin(dapm, "Headphone Jack");

 	err = snd_soc_dapm_sync(dapm);
 	if (err)
 		return err;

 	/* Headphone jack detection */
 	err = snd_soc_jack_new(codec, "Headphone Jack",
 			       SND_JACK_HEADPHONE, &smartq_jack);
 	if (err)
 		return err;

 	err = snd_soc_jack_add_pins(&smartq_jack, ARRAY_SIZE(smartq_jack_pins),
 				    smartq_jack_pins);
 	if (err)
 		return err;

 	err = snd_soc_jack_add_gpios(&smartq_jack,
 				     ARRAY_SIZE(smartq_jack_gpios),
 				     smartq_jack_gpios);

 	return err;
 }

 static struct snd_soc_dai_link smartq_dai[] = {
 	{
 		.name		= "wm8987",
 		.stream_name	= "SmartQ Hi-Fi",
 		.cpu_dai_name	= "samsung-i2s.0",
 		.codec_dai_name	= "wm8750-hifi",
 		.platform_name	= "samsung-audio",
 		.codec_name	= "wm8750-codec.0-0x1a",
 		.init		= smartq_wm8987_init,
 		.ops		= &smartq_hifi_ops,
 	},
 };

 static struct snd_soc_card snd_soc_smartq = {
 	.name = "SmartQ",
 	.dai_link = smartq_dai,
 	.num_links = ARRAY_SIZE(smartq_dai),
 };

 static struct platform_device *smartq_snd_device;

 static int __init smartq_init(void)
 {
 	int ret;

 	if (!machine_is_smartq7() && !machine_is_smartq5()) {
 		pr_info("Only SmartQ is supported by this ASoC driver\n");
 		return -ENODEV;
 	}

 	smartq_snd_device = platform_device_alloc("soc-audio", -1);
 	if (!smartq_snd_device)
 		return -ENOMEM;

 	platform_set_drvdata(smartq_snd_device, &snd_soc_smartq);

 	ret = platform_device_add(smartq_snd_device);
 	if (ret) {
 		platform_device_put(smartq_snd_device);
 		return ret;
 	}

 	/* Initialise GPIOs used by amplifiers */
 	ret = gpio_request(S3C64XX_GPK(12), "amplifiers shutdown");
 	if (ret) {
 		dev_err(&smartq_snd_device->dev, "Failed to register GPK12\n");
 		goto err_unregister_device;
 	}

 	/* Disable amplifiers */
 	ret = gpio_direction_output(S3C64XX_GPK(12), 1);
 	if (ret) {
 		dev_err(&smartq_snd_device->dev, "Failed to configure GPK12\n");
 		goto err_free_gpio_amp_shut;
 	}

 	return 0;

 err_free_gpio_amp_shut:
 	gpio_free(S3C64XX_GPK(12));
 err_unregister_device:
 	platform_device_unregister(smartq_snd_device);

 	return ret;
 }

 static void __exit smartq_exit(void)
 {
 	gpio_free(S3C64XX_GPK(12));
 	snd_soc_jack_free_gpios(&smartq_jack, ARRAY_SIZE(smartq_jack_gpios),
 				smartq_jack_gpios);

 	platform_device_unregister(smartq_snd_device);
 }

 module_init(smartq_init);
 module_exit(smartq_exit);

 /* Module information */
 MODULE_AUTHOR("Maurus Cuelenaere <mcuelenaere@gmail.com>");
 MODULE_DESCRIPTION("ALSA SoC SmartQ WM8987");
 MODULE_LICENSE("GPL");
	/* sound/soc/samsung/smartq_wm8987.c
	*
	* Copyright 2010 Maurus Cuelenaere <mcuelenaere@gmail.com>
	*
	* Based on smdk6410_wm8987.c
	* Copyright 2007 Wolfson Microelectronics PLC. - linux@wolfsonmicro.com
	* Graeme Gregory - graeme.gregory@wolfsonmicro.com
	*
	* 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/platform_device.h>
	#include <linux/gpio.h>

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

	#include <asm/mach-types.h>

	#include "dma.h"
	#include "i2s.h"

	#include "../codecs/wm8750.h"

	/*
	* WM8987 is register compatible with WM8750, so using that as base driver.
	*/

	static struct snd_soc_card snd_soc_smartq;

	static int smartq_hifi_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;
	unsigned int clk = 0;
	int ret;

	switch (params_rate(params)) {
	case 8000:
	case 16000:
	case 32000:
	case 48000:
	case 96000:
	clk = 12288000;
	break;
	case 11025:
	case 22050:
	case 44100:
	case 88200:
	clk = 11289600;
	break;
	}

	/* set codec DAI configuration */
	ret = snd_soc_dai_set_fmt(codec_dai, SND_SOC_DAIFMT_I2S \|
	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_I2S \|
	SND_SOC_DAIFMT_NB_NF \|
	SND_SOC_DAIFMT_CBS_CFS);
	if (ret < 0)
	return ret;

	/* Use PCLK for I2S signal generation */
	ret = snd_soc_dai_set_sysclk(cpu_dai, SAMSUNG_I2S_RCLKSRC_0,
	0, SND_SOC_CLOCK_IN);
	if (ret < 0)
	return ret;

	/* Gate the RCLK output on PAD */
	ret = snd_soc_dai_set_sysclk(cpu_dai, SAMSUNG_I2S_CDCLK,
	0, SND_SOC_CLOCK_IN);
	if (ret < 0)
	return ret;

	/* set the codec system clock for DAC and ADC */
	ret = snd_soc_dai_set_sysclk(codec_dai, WM8750_SYSCLK, clk,
	SND_SOC_CLOCK_IN);
	if (ret < 0)
	return ret;

	return 0;
	}

	/*
	* SmartQ WM8987 HiFi DAI operations.
	*/
	static struct snd_soc_ops smartq_hifi_ops = {
	.hw_params = smartq_hifi_hw_params,
	};

	static struct snd_soc_jack smartq_jack;

	static struct snd_soc_jack_pin smartq_jack_pins[] = {
	/* Disable speaker when headphone is plugged in */
	{
	.pin = "Internal Speaker",
	.mask = SND_JACK_HEADPHONE,
	},
	};

	static struct snd_soc_jack_gpio smartq_jack_gpios[] = {
	{
	.gpio = S3C64XX_GPL(12),
	.name = "headphone detect",
	.report = SND_JACK_HEADPHONE,
	.debounce_time = 200,
	},
	};

	static const struct snd_kcontrol_new wm8987_smartq_controls[] = {
	SOC_DAPM_PIN_SWITCH("Internal Speaker"),
	SOC_DAPM_PIN_SWITCH("Headphone Jack"),
	SOC_DAPM_PIN_SWITCH("Internal Mic"),
	};

	static int smartq_speaker_event(struct snd_soc_dapm_widget *w,
	struct snd_kcontrol *k,
	int event)
	{
	gpio_set_value(S3C64XX_GPK(12), SND_SOC_DAPM_EVENT_OFF(event));

	return 0;
	}

	static const struct snd_soc_dapm_widget wm8987_dapm_widgets[] = {
	SND_SOC_DAPM_SPK("Internal Speaker", smartq_speaker_event),
	SND_SOC_DAPM_HP("Headphone Jack", NULL),
	SND_SOC_DAPM_MIC("Internal Mic", NULL),
	};

	static const struct snd_soc_dapm_route audio_map[] = {
	{"Headphone Jack", NULL, "LOUT2"},
	{"Headphone Jack", NULL, "ROUT2"},

	{"Internal Speaker", NULL, "LOUT2"},
	{"Internal Speaker", NULL, "ROUT2"},

	{"Mic Bias", NULL, "Internal Mic"},
	{"LINPUT2", NULL, "Mic Bias"},
	};

	static int smartq_wm8987_init(struct snd_soc_pcm_runtime *rtd)
	{
	struct snd_soc_codec *codec = rtd->codec;
	struct snd_soc_dapm_context *dapm = &codec->dapm;
	int err = 0;

	/* Add SmartQ specific widgets */
	snd_soc_dapm_new_controls(dapm, wm8987_dapm_widgets,
	ARRAY_SIZE(wm8987_dapm_widgets));

	/* add SmartQ specific controls */
	err = snd_soc_add_controls(codec, wm8987_smartq_controls,
	ARRAY_SIZE(wm8987_smartq_controls));

	if (err < 0)
	return err;

	/* setup SmartQ specific audio path */
	snd_soc_dapm_add_routes(dapm, audio_map, ARRAY_SIZE(audio_map));

	/* set endpoints to not connected */
	snd_soc_dapm_nc_pin(dapm, "LINPUT1");
	snd_soc_dapm_nc_pin(dapm, "RINPUT1");
	snd_soc_dapm_nc_pin(dapm, "OUT3");
	snd_soc_dapm_nc_pin(dapm, "ROUT1");

	/* set endpoints to default off mode */
	snd_soc_dapm_enable_pin(dapm, "Internal Speaker");
	snd_soc_dapm_enable_pin(dapm, "Internal Mic");
	snd_soc_dapm_disable_pin(dapm, "Headphone Jack");

	err = snd_soc_dapm_sync(dapm);
	if (err)
	return err;

	/* Headphone jack detection */
	err = snd_soc_jack_new(codec, "Headphone Jack",
	SND_JACK_HEADPHONE, &smartq_jack);
	if (err)
	return err;

	err = snd_soc_jack_add_pins(&smartq_jack, ARRAY_SIZE(smartq_jack_pins),
	smartq_jack_pins);
	if (err)
	return err;

	err = snd_soc_jack_add_gpios(&smartq_jack,
	ARRAY_SIZE(smartq_jack_gpios),
	smartq_jack_gpios);

	return err;
	}

	static struct snd_soc_dai_link smartq_dai[] = {
	{
	.name = "wm8987",
	.stream_name = "SmartQ Hi-Fi",
	.cpu_dai_name = "samsung-i2s.0",
	.codec_dai_name = "wm8750-hifi",
	.platform_name = "samsung-audio",
	.codec_name = "wm8750-codec.0-0x1a",
	.init = smartq_wm8987_init,
	.ops = &smartq_hifi_ops,
	},
	};

	static struct snd_soc_card snd_soc_smartq = {
	.name = "SmartQ",
	.dai_link = smartq_dai,
	.num_links = ARRAY_SIZE(smartq_dai),
	};

	static struct platform_device *smartq_snd_device;

	static int __init smartq_init(void)
	{
	int ret;

	if (!machine_is_smartq7() && !machine_is_smartq5()) {
	pr_info("Only SmartQ is supported by this ASoC driver\n");
	return -ENODEV;
	}

	smartq_snd_device = platform_device_alloc("soc-audio", -1);
	if (!smartq_snd_device)
	return -ENOMEM;

	platform_set_drvdata(smartq_snd_device, &snd_soc_smartq);

	ret = platform_device_add(smartq_snd_device);
	if (ret) {
	platform_device_put(smartq_snd_device);
	return ret;
	}

	/* Initialise GPIOs used by amplifiers */
	ret = gpio_request(S3C64XX_GPK(12), "amplifiers shutdown");
	if (ret) {
	dev_err(&smartq_snd_device->dev, "Failed to register GPK12\n");
	goto err_unregister_device;
	}

	/* Disable amplifiers */
	ret = gpio_direction_output(S3C64XX_GPK(12), 1);
	if (ret) {
	dev_err(&smartq_snd_device->dev, "Failed to configure GPK12\n");
	goto err_free_gpio_amp_shut;
	}

	return 0;

	err_free_gpio_amp_shut:
	gpio_free(S3C64XX_GPK(12));
	err_unregister_device:
	platform_device_unregister(smartq_snd_device);

	return ret;
	}

	static void __exit smartq_exit(void)
	{
	gpio_free(S3C64XX_GPK(12));
	snd_soc_jack_free_gpios(&smartq_jack, ARRAY_SIZE(smartq_jack_gpios),
	smartq_jack_gpios);

	platform_device_unregister(smartq_snd_device);
	}

	module_init(smartq_init);
	module_exit(smartq_exit);

	/* Module information */
	MODULE_AUTHOR("Maurus Cuelenaere <mcuelenaere@gmail.com>");
	MODULE_DESCRIPTION("ALSA SoC SmartQ WM8987");
	MODULE_LICENSE("GPL");