[deliverable/linux.git] / sound / soc / jz4740 / qi_lb60.c

/*
 * Copyright (C) 2009, Lars-Peter Clausen <lars@metafoo.de>
 *
 * This program is free software; you can redistribute it and/or modify
 * it under the terms of the GNU General Public License version 2 as
 * published by the Free Software Foundation.
 *
 *  You should have received a copy of the  GNU General Public License along
 *  with this program; if not, write  to the Free Software Foundation, Inc.,
 *  675 Mass Ave, Cambridge, MA 02139, USA.
 *
 */

#include <linux/module.h>
#include <linux/moduleparam.h>
#include <linux/timer.h>
#include <linux/interrupt.h>
#include <linux/platform_device.h>
#include <sound/core.h>
#include <sound/pcm.h>
#include <sound/soc.h>
#include <linux/gpio.h>

#define QI_LB60_SND_GPIO JZ_GPIO_PORTB(29)
#define QI_LB60_AMP_GPIO JZ_GPIO_PORTD(4)

static int qi_lb60_spk_event(struct snd_soc_dapm_widget *widget,
			     struct snd_kcontrol *ctrl, int event)
{
	int on = 0;
	if (event & SND_SOC_DAPM_POST_PMU)
		on = 1;
	else if (event & SND_SOC_DAPM_PRE_PMD)
		on = 0;

	gpio_set_value(QI_LB60_SND_GPIO, on);
	gpio_set_value(QI_LB60_AMP_GPIO, on);

	return 0;
}

static const struct snd_soc_dapm_widget qi_lb60_widgets[] = {
	SND_SOC_DAPM_SPK("Speaker", qi_lb60_spk_event),
	SND_SOC_DAPM_MIC("Mic", NULL),
};

static const struct snd_soc_dapm_route qi_lb60_routes[] = {
	{"Mic", NULL, "MIC"},
	{"Speaker", NULL, "LOUT"},
	{"Speaker", NULL, "ROUT"},
};

#define QI_LB60_DAIFMT (SND_SOC_DAIFMT_I2S | \
			SND_SOC_DAIFMT_NB_NF | \
			SND_SOC_DAIFMT_CBM_CFM)

static int qi_lb60_codec_init(struct snd_soc_pcm_runtime *rtd)
{
	struct snd_soc_codec *codec = rtd->codec;
	struct snd_soc_dai *cpu_dai = rtd->cpu_dai;
	struct snd_soc_dapm_context *dapm = &codec->dapm;
	int ret;

	snd_soc_dapm_nc_pin(dapm, "LIN");
	snd_soc_dapm_nc_pin(dapm, "RIN");

	ret = snd_soc_dai_set_fmt(cpu_dai, QI_LB60_DAIFMT);
	if (ret < 0) {
		dev_err(codec->dev, "Failed to set cpu dai format: %d\n", ret);
		return ret;
	}

	snd_soc_dapm_new_controls(dapm, qi_lb60_widgets,
				  ARRAY_SIZE(qi_lb60_widgets));
	snd_soc_dapm_add_routes(dapm, qi_lb60_routes,
				ARRAY_SIZE(qi_lb60_routes));
	snd_soc_dapm_sync(dapm);

	return 0;
}

static struct snd_soc_dai_link qi_lb60_dai = {
	.name = "jz4740",
	.stream_name = "jz4740",
	.cpu_dai_name = "jz4740-i2s",
	.platform_name = "jz4740-pcm-audio",
	.codec_dai_name = "jz4740-hifi",
	.codec_name = "jz4740-codec",
	.init = qi_lb60_codec_init,
};

static struct snd_soc_card qi_lb60 = {
	.name = "QI LB60",
	.dai_link = &qi_lb60_dai,
	.num_links = 1,
};

static struct platform_device *qi_lb60_snd_device;

static int __init qi_lb60_init(void)
{
	int ret;

	qi_lb60_snd_device = platform_device_alloc("soc-audio", -1);

	if (!qi_lb60_snd_device)
		return -ENOMEM;

	ret = gpio_request(QI_LB60_SND_GPIO, "SND");
	if (ret) {
		pr_err("qi_lb60 snd: Failed to request SND GPIO(%d): %d\n",
				QI_LB60_SND_GPIO, ret);
		goto err_device_put;
	}

	ret = gpio_request(QI_LB60_AMP_GPIO, "AMP");
	if (ret) {
		pr_err("qi_lb60 snd: Failed to request AMP GPIO(%d): %d\n",
				QI_LB60_AMP_GPIO, ret);
		goto err_gpio_free_snd;
	}

	gpio_direction_output(QI_LB60_SND_GPIO, 0);
	gpio_direction_output(QI_LB60_AMP_GPIO, 0);

	platform_set_drvdata(qi_lb60_snd_device, &qi_lb60);

	ret = platform_device_add(qi_lb60_snd_device);
	if (ret) {
		pr_err("qi_lb60 snd: Failed to add snd soc device: %d\n", ret);
		goto err_unset_pdata;
	}

	 return 0;

err_unset_pdata:
	platform_set_drvdata(qi_lb60_snd_device, NULL);
/*err_gpio_free_amp:*/
	gpio_free(QI_LB60_AMP_GPIO);
err_gpio_free_snd:
	gpio_free(QI_LB60_SND_GPIO);
err_device_put:
	platform_device_put(qi_lb60_snd_device);

	return ret;
}
module_init(qi_lb60_init);

static void __exit qi_lb60_exit(void)
{
	gpio_free(QI_LB60_AMP_GPIO);
	gpio_free(QI_LB60_SND_GPIO);
	platform_device_unregister(qi_lb60_snd_device);
}
module_exit(qi_lb60_exit);

MODULE_AUTHOR("Lars-Peter Clausen <lars@metafoo.de>");
MODULE_DESCRIPTION("ALSA SoC QI LB60 Audio support");
MODULE_LICENSE("GPL v2");
Commit	Line	Data
5898dd9e LPC	1	/*
	2	* Copyright (C) 2009, Lars-Peter Clausen <lars@metafoo.de>
	3	*
	4	* This program is free software; you can redistribute it and/or modify
	5	* it under the terms of the GNU General Public License version 2 as
	6	* published by the Free Software Foundation.
	7	*
	8	* You should have received a copy of the GNU General Public License along
	9	* with this program; if not, write to the Free Software Foundation, Inc.,
	10	* 675 Mass Ave, Cambridge, MA 02139, USA.
	11	*
	12	*/
	13
	14	#include <linux/module.h>
	15	#include <linux/moduleparam.h>
	16	#include <linux/timer.h>
	17	#include <linux/interrupt.h>
	18	#include <linux/platform_device.h>
	19	#include <sound/core.h>
	20	#include <sound/pcm.h>
	21	#include <sound/soc.h>
5898dd9e LPC	22	#include <linux/gpio.h>
5898dd9e LPC	23
5898dd9e LPC	24	#define QI_LB60_SND_GPIO JZ_GPIO_PORTB(29)
	25	#define QI_LB60_AMP_GPIO JZ_GPIO_PORTD(4)
	26
	27	static int qi_lb60_spk_event(struct snd_soc_dapm_widget *widget,
	28	struct snd_kcontrol *ctrl, int event)
	29	{
	30	int on = 0;
	31	if (event & SND_SOC_DAPM_POST_PMU)
	32	on = 1;
	33	else if (event & SND_SOC_DAPM_PRE_PMD)
	34	on = 0;
	35
	36	gpio_set_value(QI_LB60_SND_GPIO, on);
	37	gpio_set_value(QI_LB60_AMP_GPIO, on);
	38
	39	return 0;
	40	}
	41
	42	static const struct snd_soc_dapm_widget qi_lb60_widgets[] = {
	43	SND_SOC_DAPM_SPK("Speaker", qi_lb60_spk_event),
	44	SND_SOC_DAPM_MIC("Mic", NULL),
	45	};
	46
	47	static const struct snd_soc_dapm_route qi_lb60_routes[] = {
	48	{"Mic", NULL, "MIC"},
	49	{"Speaker", NULL, "LOUT"},
	50	{"Speaker", NULL, "ROUT"},
	51	};
	52
	53	#define QI_LB60_DAIFMT (SND_SOC_DAIFMT_I2S \| \
	54	SND_SOC_DAIFMT_NB_NF \| \
	55	SND_SOC_DAIFMT_CBM_CFM)
	56
f0fba2ad	57	static int qi_lb60_codec_init(struct snd_soc_pcm_runtime *rtd)
5898dd9e	58	{
f0fba2ad LG	59	struct snd_soc_codec *codec = rtd->codec;
f0fba2ad LG	60	struct snd_soc_dai *cpu_dai = rtd->cpu_dai;
ce6120cc	61	struct snd_soc_dapm_context *dapm = &codec->dapm;
5898dd9e	62	int ret;
5898dd9e	63
ce6120cc LG	64	snd_soc_dapm_nc_pin(dapm, "LIN");
ce6120cc LG	65	snd_soc_dapm_nc_pin(dapm, "RIN");
5898dd9e LPC	66
	67	ret = snd_soc_dai_set_fmt(cpu_dai, QI_LB60_DAIFMT);
	68	if (ret < 0) {
	69	dev_err(codec->dev, "Failed to set cpu dai format: %d\n", ret);
	70	return ret;
	71	}
	72
ce6120cc LG	73	snd_soc_dapm_new_controls(dapm, qi_lb60_widgets,
	74	ARRAY_SIZE(qi_lb60_widgets));
	75	snd_soc_dapm_add_routes(dapm, qi_lb60_routes,
	76	ARRAY_SIZE(qi_lb60_routes));
	77	snd_soc_dapm_sync(dapm);
5898dd9e LPC	78
	79	return 0;
	80	}
	81
	82	static struct snd_soc_dai_link qi_lb60_dai = {
	83	.name = "jz4740",
	84	.stream_name = "jz4740",
f0fba2ad	85	.cpu_dai_name = "jz4740-i2s",
3ca2ecd9	86	.platform_name = "jz4740-pcm-audio",
f0fba2ad LG	87	.codec_dai_name = "jz4740-hifi",
f0fba2ad LG	88	.codec_name = "jz4740-codec",
5898dd9e LPC	89	.init = qi_lb60_codec_init,
	90	};
	91
	92	static struct snd_soc_card qi_lb60 = {
	93	.name = "QI LB60",
	94	.dai_link = &qi_lb60_dai,
	95	.num_links = 1,
5898dd9e LPC	96	};
	97
	98	static struct platform_device *qi_lb60_snd_device;
	99
	100	static int __init qi_lb60_init(void)
	101	{
	102	int ret;
	103
	104	qi_lb60_snd_device = platform_device_alloc("soc-audio", -1);
	105
	106	if (!qi_lb60_snd_device)
	107	return -ENOMEM;
	108
	109	ret = gpio_request(QI_LB60_SND_GPIO, "SND");
	110	if (ret) {
	111	pr_err("qi_lb60 snd: Failed to request SND GPIO(%d): %d\n",
	112	QI_LB60_SND_GPIO, ret);
	113	goto err_device_put;
	114	}
	115
	116	ret = gpio_request(QI_LB60_AMP_GPIO, "AMP");
	117	if (ret) {
	118	pr_err("qi_lb60 snd: Failed to request AMP GPIO(%d): %d\n",
	119	QI_LB60_AMP_GPIO, ret);
	120	goto err_gpio_free_snd;
	121	}
	122
	123	gpio_direction_output(QI_LB60_SND_GPIO, 0);
	124	gpio_direction_output(QI_LB60_AMP_GPIO, 0);
	125
f0fba2ad	126	platform_set_drvdata(qi_lb60_snd_device, &qi_lb60);
5898dd9e LPC	127
	128	ret = platform_device_add(qi_lb60_snd_device);
	129	if (ret) {
	130	pr_err("qi_lb60 snd: Failed to add snd soc device: %d\n", ret);
	131	goto err_unset_pdata;
	132	}
	133
	134	return 0;
	135
	136	err_unset_pdata:
	137	platform_set_drvdata(qi_lb60_snd_device, NULL);
	138	/err_gpio_free_amp:/
	139	gpio_free(QI_LB60_AMP_GPIO);
	140	err_gpio_free_snd:
	141	gpio_free(QI_LB60_SND_GPIO);
	142	err_device_put:
	143	platform_device_put(qi_lb60_snd_device);
	144
	145	return ret;
	146	}
	147	module_init(qi_lb60_init);
	148
	149	static void __exit qi_lb60_exit(void)
	150	{
	151	gpio_free(QI_LB60_AMP_GPIO);
	152	gpio_free(QI_LB60_SND_GPIO);
	153	platform_device_unregister(qi_lb60_snd_device);
	154	}
	155	module_exit(qi_lb60_exit);
	156
	157	MODULE_AUTHOR("Lars-Peter Clausen <lars@metafoo.de>");
	158	MODULE_DESCRIPTION("ALSA SoC QI LB60 Audio support");
	159	MODULE_LICENSE("GPL v2");