[deliverable/linux.git] / sound / soc / pxa / hx4700.c

/*
 * 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");
Commit	Line	Data
c26f642e DA	1	/*
	2	* SoC audio for HP iPAQ hx4700
	3	*
	4	* Copyright (c) 2009 Philipp Zabel
	5	*
	6	* This program is free software; you can redistribute it and/or modify it
	7	* under the terms of the GNU General Public License as published by the
	8	* Free Software Foundation; either version 2 of the License, or (at your
	9	* option) any later version.
	10	*
	11	*/
	12
	13	#include <linux/module.h>
	14	#include <linux/timer.h>
	15	#include <linux/interrupt.h>
	16	#include <linux/platform_device.h>
	17	#include <linux/delay.h>
	18	#include <linux/gpio.h>
	19
	20	#include <sound/core.h>
	21	#include <sound/jack.h>
	22	#include <sound/pcm.h>
	23	#include <sound/pcm_params.h>
	24	#include <sound/soc.h>
	25
	26	#include <mach/hx4700.h>
	27	#include <asm/mach-types.h>
	28	#include "pxa2xx-i2s.h"
	29
	30	#include "../codecs/ak4641.h"
	31
	32	static struct snd_soc_jack hs_jack;
	33
	34	/* Headphones jack detection DAPM pin */
	35	static struct snd_soc_jack_pin hs_jack_pin[] = {
	36	{
	37	.pin = "Headphone Jack",
	38	.mask = SND_JACK_HEADPHONE,
	39	},
	40	{
	41	.pin = "Speaker",
	42	/* disable speaker when hp jack is inserted */
	43	.mask = SND_JACK_HEADPHONE,
	44	.invert = 1,
	45	},
	46	};
	47
	48	/* Headphones jack detection GPIO */
	49	static struct snd_soc_jack_gpio hs_jack_gpio = {
	50	.gpio = GPIO75_HX4700_EARPHONE_nDET,
	51	.invert = true,
	52	.name = "hp-gpio",
	53	.report = SND_JACK_HEADPHONE,
	54	.debounce_time = 200,
	55	};
	56
	57	/*
	58	* iPAQ hx4700 uses I2S for capture and playback.
	59	*/
	60	static int hx4700_hw_params(struct snd_pcm_substream *substream,
	61	struct snd_pcm_hw_params *params)
	62	{
	63	struct snd_soc_pcm_runtime *rtd = substream->private_data;
	64	struct snd_soc_dai *codec_dai = rtd->codec_dai;
65	struct snd_soc_dai *cpu_dai = rtd->cpu_dai;
66	int ret = 0;
67
68	/* set codec DAI configuration */
69	ret = snd_soc_dai_set_fmt(codec_dai,
70	SND_SOC_DAIFMT_MSB \| SND_SOC_DAIFMT_NB_NF \|
71	SND_SOC_DAIFMT_CBS_CFS);
72	if (ret < 0)
73	return ret;
74
75	/* set cpu DAI configuration */
76	ret = snd_soc_dai_set_fmt(cpu_dai,
77	SND_SOC_DAIFMT_MSB \| SND_SOC_DAIFMT_NB_NF \|
78	SND_SOC_DAIFMT_CBS_CFS);
79	if (ret < 0)
80	return ret;
81
82	/* set the I2S system clock as output */
83	ret = snd_soc_dai_set_sysclk(cpu_dai, PXA2XX_I2S_SYSCLK, 0,
84	SND_SOC_CLOCK_OUT);
85	if (ret < 0)
86	return ret;
87
88	/* inform codec driver about clock freq *
89	* (PXA I2S always uses divider 256) */
90	ret = snd_soc_dai_set_sysclk(codec_dai, 0, 256 * params_rate(params),
91	SND_SOC_CLOCK_IN);
92	if (ret < 0)
93	return ret;
94
95	return 0;
96	}
97
98	static struct snd_soc_ops hx4700_ops = {
99	.hw_params = hx4700_hw_params,
100	};
101
102	static int hx4700_spk_power(struct snd_soc_dapm_widget *w,
103	struct snd_kcontrol *k, int event)
104	{
105	gpio_set_value(GPIO107_HX4700_SPK_nSD, !!SND_SOC_DAPM_EVENT_ON(event));
106	return 0;
107	}
108
109	static int hx4700_hp_power(struct snd_soc_dapm_widget *w,
110	struct snd_kcontrol *k, int event)
111	{
112	gpio_set_value(GPIO92_HX4700_HP_DRIVER, !!SND_SOC_DAPM_EVENT_ON(event));
113	return 0;
114	}
115
116	/* hx4700 machine dapm widgets */
117	static const struct snd_soc_dapm_widget hx4700_dapm_widgets[] = {
118	SND_SOC_DAPM_HP("Headphone Jack", hx4700_hp_power),
119	SND_SOC_DAPM_SPK("Speaker", hx4700_spk_power),
120	SND_SOC_DAPM_MIC("Built-in Microphone", NULL),
121	};
122
123	/* hx4700 machine audio_map */
124	static const struct snd_soc_dapm_route hx4700_audio_map[] = {
125
126	/* Headphone connected to LOUT, ROUT */
127	{"Headphone Jack", NULL, "LOUT"},
128	{"Headphone Jack", NULL, "ROUT"},
129
130	/* Speaker connected to MOUT2 */
131	{"Speaker", NULL, "MOUT2"},
132
133	/* Microphone connected to MICIN */
134	{"MICIN", NULL, "Built-in Microphone"},
135	{"AIN", NULL, "MICOUT"},
136	};
137
138	/*
139	* Logic for a ak4641 as connected on a HP iPAQ hx4700
140	*/
141	static int hx4700_ak4641_init(struct snd_soc_pcm_runtime *rtd)
142	{
143	struct snd_soc_codec *codec = rtd->codec;
144	struct snd_soc_dapm_context *dapm = &codec->dapm;
145	int err;
146
147	/* NC codec pins */
148	/* FIXME: is anything connected here? */
149	snd_soc_dapm_nc_pin(dapm, "MOUT1");
150	snd_soc_dapm_nc_pin(dapm, "MICEXT");
151	snd_soc_dapm_nc_pin(dapm, "AUX");
152
153	/* Jack detection API stuff */
154	err = snd_soc_jack_new(codec, "Headphone Jack",
155	SND_JACK_HEADPHONE, &hs_jack);
156	if (err)
157	return err;
158
159	err = snd_soc_jack_add_pins(&hs_jack, ARRAY_SIZE(hs_jack_pin),
160	hs_jack_pin);
161	if (err)
162	return err;
163
164	err = snd_soc_jack_add_gpios(&hs_jack, 1, &hs_jack_gpio);
165
166	return err;
167	}
168
169	/* hx4700 digital audio interface glue - connects codec <--> CPU */
170	static struct snd_soc_dai_link hx4700_dai = {
171	.name = "ak4641",
172	.stream_name = "AK4641",
173	.cpu_dai_name = "pxa2xx-i2s",
174	.codec_dai_name = "ak4641-hifi",
175	.platform_name = "pxa-pcm-audio",
176	.codec_name = "ak4641.0-0012",
177	.init = hx4700_ak4641_init,
178	.ops = &hx4700_ops,
179	};
180
181	/* hx4700 audio machine driver */
182	static struct snd_soc_card snd_soc_card_hx4700 = {
183	.name = "iPAQ hx4700",
184	.dai_link = &hx4700_dai,
185	.num_links = 1,
186	.dapm_widgets = hx4700_dapm_widgets,
187	.num_dapm_widgets = ARRAY_SIZE(hx4700_dapm_widgets),
188	.dapm_routes = hx4700_audio_map,
189	.num_dapm_routes = ARRAY_SIZE(hx4700_audio_map),
190	};
191
192	static struct gpio hx4700_audio_gpios[] = {
193	{ GPIO107_HX4700_SPK_nSD, GPIOF_OUT_INIT_HIGH, "SPK_POWER" },
194	{ GPIO92_HX4700_HP_DRIVER, GPIOF_OUT_INIT_LOW, "EP_POWER" },
195	};
196
197	static int __devinit hx4700_audio_probe(struct platform_device *pdev)
198	{
199	int ret;
200
201	if (!machine_is_h4700())
202	return -ENODEV;
203
204	ret = gpio_request_array(hx4700_audio_gpios,
205	ARRAY_SIZE(hx4700_audio_gpios));
206	if (ret)
207	return ret;
208
209	snd_soc_card_hx4700.dev = &pdev->dev;
210	ret = snd_soc_register_card(&snd_soc_card_hx4700);
211	if (ret)
212	return ret;
213
214	return 0;
215	}
216
217	static int __devexit hx4700_audio_remove(struct platform_device *pdev)
218	{
219	snd_soc_jack_free_gpios(&hs_jack, 1, &hs_jack_gpio);
220	snd_soc_unregister_card(&snd_soc_card_hx4700);
221
222	gpio_set_value(GPIO92_HX4700_HP_DRIVER, 0);
223	gpio_set_value(GPIO107_HX4700_SPK_nSD, 0);
224
225	gpio_free_array(hx4700_audio_gpios, ARRAY_SIZE(hx4700_audio_gpios));
226	return 0;
227	}
228
229	static struct platform_driver hx4700_audio_driver = {
230	.driver = {
231	.name = "hx4700-audio",
232	.owner = THIS_MODULE,
233	.pm = &snd_soc_pm_ops,
234	},
235	.probe = hx4700_audio_probe,
236	.remove = __devexit_p(hx4700_audio_remove),
237	};
238
239	static int __init hx4700_modinit(void)
240	{
241	return platform_driver_register(&hx4700_audio_driver);
242	}
243	module_init(hx4700_modinit);
244
245	static void __exit hx4700_modexit(void)
246	{
247	platform_driver_unregister(&hx4700_audio_driver);
248	}
249
250	module_exit(hx4700_modexit);
251
252	MODULE_AUTHOR("Philipp Zabel");
253	MODULE_DESCRIPTION("ALSA SoC iPAQ hx4700");
254	MODULE_LICENSE("GPL");
255	MODULE_ALIAS("platform:hx4700-audio");