[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 <sound/soc-dapm.h>
#include <linux/gpio.h>

#include "../codecs/jz4740.h"
#include "jz4740-pcm.h"
#include "jz4740-i2s.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_codec *codec)
{
	int ret;
	struct snd_soc_dai *cpu_dai = codec->socdev->card->dai_link->cpu_dai;

	snd_soc_dapm_nc_pin(codec, "LIN");
	snd_soc_dapm_nc_pin(codec, "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(codec, qi_lb60_widgets, ARRAY_SIZE(qi_lb60_widgets));
	snd_soc_dapm_add_routes(codec, qi_lb60_routes, ARRAY_SIZE(qi_lb60_routes));
	snd_soc_dapm_sync(codec);

	return 0;
}

static struct snd_soc_dai_link qi_lb60_dai = {
	.name = "jz4740",
	.stream_name = "jz4740",
	.cpu_dai = &jz4740_i2s_dai,
	.codec_dai = &jz4740_codec_dai,
	.init = qi_lb60_codec_init,
};

static struct snd_soc_card qi_lb60 = {
	.name = "QI LB60",
	.dai_link = &qi_lb60_dai,
	.num_links = 1,
	.platform = &jz4740_soc_platform,
};

static struct snd_soc_device qi_lb60_snd_devdata = {
	.card = &qi_lb60,
	.codec_dev = &soc_codec_dev_jz4740_codec,
};

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_snd_devdata);
	qi_lb60_snd_devdata.dev = &qi_lb60_snd_device->dev;

	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>
	22	#include <sound/soc-dapm.h>
	23	#include <linux/gpio.h>
	24
	25	#include "../codecs/jz4740.h"
	26	#include "jz4740-pcm.h"
	27	#include "jz4740-i2s.h"
	28
	29
	30	#define QI_LB60_SND_GPIO JZ_GPIO_PORTB(29)
	31	#define QI_LB60_AMP_GPIO JZ_GPIO_PORTD(4)
	32
	33	static int qi_lb60_spk_event(struct snd_soc_dapm_widget *widget,
	34	struct snd_kcontrol *ctrl, int event)
	35	{
	36	int on = 0;
	37	if (event & SND_SOC_DAPM_POST_PMU)
	38	on = 1;
	39	else if (event & SND_SOC_DAPM_PRE_PMD)
	40	on = 0;
	41
	42	gpio_set_value(QI_LB60_SND_GPIO, on);
	43	gpio_set_value(QI_LB60_AMP_GPIO, on);
	44
	45	return 0;
	46	}
	47
	48	static const struct snd_soc_dapm_widget qi_lb60_widgets[] = {
	49	SND_SOC_DAPM_SPK("Speaker", qi_lb60_spk_event),
	50	SND_SOC_DAPM_MIC("Mic", NULL),
	51	};
	52
	53	static const struct snd_soc_dapm_route qi_lb60_routes[] = {
	54	{"Mic", NULL, "MIC"},
	55	{"Speaker", NULL, "LOUT"},
	56	{"Speaker", NULL, "ROUT"},
	57	};
	58
	59	#define QI_LB60_DAIFMT (SND_SOC_DAIFMT_I2S \| \
	60	SND_SOC_DAIFMT_NB_NF \| \
	61	SND_SOC_DAIFMT_CBM_CFM)
	62
	63	static int qi_lb60_codec_init(struct snd_soc_codec *codec)
	64	{
65	int ret;
66	struct snd_soc_dai *cpu_dai = codec->socdev->card->dai_link->cpu_dai;
67
68	snd_soc_dapm_nc_pin(codec, "LIN");
69	snd_soc_dapm_nc_pin(codec, "RIN");
70
71	ret = snd_soc_dai_set_fmt(cpu_dai, QI_LB60_DAIFMT);
72	if (ret < 0) {
73	dev_err(codec->dev, "Failed to set cpu dai format: %d\n", ret);
74	return ret;
75	}
76
77	snd_soc_dapm_new_controls(codec, qi_lb60_widgets, ARRAY_SIZE(qi_lb60_widgets));
78	snd_soc_dapm_add_routes(codec, qi_lb60_routes, ARRAY_SIZE(qi_lb60_routes));
79	snd_soc_dapm_sync(codec);
80
81	return 0;
82	}
83
84	static struct snd_soc_dai_link qi_lb60_dai = {
85	.name = "jz4740",
86	.stream_name = "jz4740",
87	.cpu_dai = &jz4740_i2s_dai,
88	.codec_dai = &jz4740_codec_dai,
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,
96	.platform = &jz4740_soc_platform,
97	};
98
99	static struct snd_soc_device qi_lb60_snd_devdata = {
100	.card = &qi_lb60,
101	.codec_dev = &soc_codec_dev_jz4740_codec,
102	};
103
104	static struct platform_device *qi_lb60_snd_device;
105
106	static int __init qi_lb60_init(void)
107	{
108	int ret;
109
110	qi_lb60_snd_device = platform_device_alloc("soc-audio", -1);
111
112	if (!qi_lb60_snd_device)
113	return -ENOMEM;
114
115	ret = gpio_request(QI_LB60_SND_GPIO, "SND");
116	if (ret) {
117	pr_err("qi_lb60 snd: Failed to request SND GPIO(%d): %d\n",
118	QI_LB60_SND_GPIO, ret);
119	goto err_device_put;
120	}
121
122	ret = gpio_request(QI_LB60_AMP_GPIO, "AMP");
123	if (ret) {
124	pr_err("qi_lb60 snd: Failed to request AMP GPIO(%d): %d\n",
125	QI_LB60_AMP_GPIO, ret);
126	goto err_gpio_free_snd;
127	}
128
129	gpio_direction_output(QI_LB60_SND_GPIO, 0);
130	gpio_direction_output(QI_LB60_AMP_GPIO, 0);
131
132	platform_set_drvdata(qi_lb60_snd_device, &qi_lb60_snd_devdata);
133	qi_lb60_snd_devdata.dev = &qi_lb60_snd_device->dev;
134
135	ret = platform_device_add(qi_lb60_snd_device);
136	if (ret) {
137	pr_err("qi_lb60 snd: Failed to add snd soc device: %d\n", ret);
138	goto err_unset_pdata;
139	}
140
141	return 0;
142
143	err_unset_pdata:
144	platform_set_drvdata(qi_lb60_snd_device, NULL);
145	/err_gpio_free_amp:/
146	gpio_free(QI_LB60_AMP_GPIO);
147	err_gpio_free_snd:
148	gpio_free(QI_LB60_SND_GPIO);
149	err_device_put:
150	platform_device_put(qi_lb60_snd_device);
151
152	return ret;
153	}
154	module_init(qi_lb60_init);
155
156	static void __exit qi_lb60_exit(void)
157	{
158	gpio_free(QI_LB60_AMP_GPIO);
159	gpio_free(QI_LB60_SND_GPIO);
160	platform_device_unregister(qi_lb60_snd_device);
161	}
162	module_exit(qi_lb60_exit);
163
164	MODULE_AUTHOR("Lars-Peter Clausen <lars@metafoo.de>");
165	MODULE_DESCRIPTION("ALSA SoC QI LB60 Audio support");
166	MODULE_LICENSE("GPL v2");