[deliverable/linux.git] / sound / soc / pxa / z2.c

/*
 * linux/sound/soc/pxa/z2.c
 *
 * SoC Audio driver for Aeronix Zipit Z2
 *
 * Copyright (C) 2009 Ken McGuire <kenm@desertweyr.com>
 * Copyright (C) 2010 Marek Vasut <marek.vasut@gmail.com>
 *
 * 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.
 */

#include <linux/module.h>
#include <linux/moduleparam.h>
#include <linux/timer.h>
#include <linux/interrupt.h>
#include <linux/platform_device.h>
#include <linux/gpio.h>

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

#include <asm/mach-types.h>
#include <mach/hardware.h>
#include <mach/audio.h>
#include <mach/z2.h>

#include "../codecs/wm8750.h"
#include "pxa2xx-pcm.h"
#include "pxa2xx-i2s.h"

static struct snd_soc_card snd_soc_z2;

static int z2_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->dai->codec_dai;
	struct snd_soc_dai *cpu_dai = rtd->dai->cpu_dai;
	unsigned int clk = 0;
	int ret = 0;

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

	/* 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;

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

	return 0;
}

static struct snd_soc_jack hs_jack;

/* Headset jack detection DAPM pins */
static struct snd_soc_jack_pin hs_jack_pins[] = {
	{
		.pin	= "Mic Jack",
		.mask	= SND_JACK_MICROPHONE,
	},
	{
		.pin	= "Headphone Jack",
		.mask	= SND_JACK_HEADPHONE,
	},
};

/* Headset jack detection gpios */
static struct snd_soc_jack_gpio hs_jack_gpios[] = {
	{
		.gpio		= GPIO37_ZIPITZ2_HEADSET_DETECT,
		.name		= "hsdet-gpio",
		.report		= SND_JACK_HEADSET,
		.debounce_time	= 200,
	},
};

/* z2 machine dapm widgets */
static const struct snd_soc_dapm_widget wm8750_dapm_widgets[] = {
	SND_SOC_DAPM_HP("Headphone Jack", NULL),
	SND_SOC_DAPM_MIC("Mic Jack", NULL),
	SND_SOC_DAPM_SPK("Ext Spk", NULL),

	/* headset is a mic and mono headphone */
	SND_SOC_DAPM_HP("Headset Jack", NULL),
};

/* Z2 machine audio_map */
static const struct snd_soc_dapm_route audio_map[] = {

	/* headphone connected to LOUT1, ROUT1 */
	{"Headphone Jack", NULL, "LOUT1"},
	{"Headphone Jack", NULL, "ROUT1"},

	/* ext speaker connected to LOUT2, ROUT2  */
	{"Ext Spk", NULL , "ROUT2"},
	{"Ext Spk", NULL , "LOUT2"},

	/* mic is connected to R input 2 - with bias */
	{"RINPUT2", NULL, "Mic Bias"},
	{"Mic Bias", NULL, "Mic Jack"},
};

/*
 * Logic for a wm8750 as connected on a Z2 Device
 */
static int z2_wm8750_init(struct snd_soc_codec *codec)
{
	int ret;

	/* NC codec pins */
	snd_soc_dapm_disable_pin(codec, "LINPUT3");
	snd_soc_dapm_disable_pin(codec, "RINPUT3");
	snd_soc_dapm_disable_pin(codec, "OUT3");
	snd_soc_dapm_disable_pin(codec, "MONO");

	/* Add z2 specific widgets */
	snd_soc_dapm_new_controls(codec, wm8750_dapm_widgets,
				 ARRAY_SIZE(wm8750_dapm_widgets));

	/* Set up z2 specific audio paths */
	snd_soc_dapm_add_routes(codec, audio_map, ARRAY_SIZE(audio_map));

	ret = snd_soc_dapm_sync(codec);
	if (ret)
		goto err;

	/* Jack detection API stuff */
	ret = snd_soc_jack_new(&snd_soc_z2, "Headset Jack", SND_JACK_HEADSET,
				&hs_jack);
	if (ret)
		goto err;

	ret = snd_soc_jack_add_pins(&hs_jack, ARRAY_SIZE(hs_jack_pins),
				hs_jack_pins);
	if (ret)
		goto err;

	ret = snd_soc_jack_add_gpios(&hs_jack, ARRAY_SIZE(hs_jack_gpios),
				hs_jack_gpios);
	if (ret)
		goto err;

	return 0;

err:
	return ret;
}

static struct snd_soc_ops z2_ops = {
	.hw_params = z2_hw_params,
};

/* z2 digital audio interface glue - connects codec <--> CPU */
static struct snd_soc_dai_link z2_dai = {
	.name		= "wm8750",
	.stream_name	= "WM8750",
	.cpu_dai	= &pxa_i2s_dai,
	.codec_dai	= &wm8750_dai,
	.init		= z2_wm8750_init,
	.ops		= &z2_ops,
};

/* z2 audio machine driver */
static struct snd_soc_card snd_soc_z2 = {
	.name		= "Z2",
	.platform	= &pxa2xx_soc_platform,
	.dai_link	= &z2_dai,
	.num_links	= 1,
};

/* z2 audio subsystem */
static struct snd_soc_device z2_snd_devdata = {
	.card		= &snd_soc_z2,
	.codec_dev	= &soc_codec_dev_wm8750,
};

static struct platform_device *z2_snd_device;

static int __init z2_init(void)
{
	int ret;

	if (!machine_is_zipit2())
		return -ENODEV;

	z2_snd_device = platform_device_alloc("soc-audio", -1);
	if (!z2_snd_device)
		return -ENOMEM;

	platform_set_drvdata(z2_snd_device, &z2_snd_devdata);
	z2_snd_devdata.dev = &z2_snd_device->dev;
	ret = platform_device_add(z2_snd_device);

	if (ret)
		platform_device_put(z2_snd_device);

	return ret;
}

static void __exit z2_exit(void)
{
	platform_device_unregister(z2_snd_device);
}

module_init(z2_init);
module_exit(z2_exit);

MODULE_AUTHOR("Ken McGuire <kenm@desertweyr.com>, "
		"Marek Vasut <marek.vasut@gmail.com>");
MODULE_DESCRIPTION("ALSA SoC ZipitZ2");
MODULE_LICENSE("GPL");
Commit	Line	Data
d21e0f4c MV	1	/*
	2	* linux/sound/soc/pxa/z2.c
	3	*
	4	* SoC Audio driver for Aeronix Zipit Z2
	5	*
	6	* Copyright (C) 2009 Ken McGuire <kenm@desertweyr.com>
	7	* Copyright (C) 2010 Marek Vasut <marek.vasut@gmail.com>
	8	*
	9	* This program is free software; you can redistribute it and/or modify
	10	* it under the terms of the GNU General Public License version 2 as
	11	* published by the Free Software Foundation.
	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 <linux/gpio.h>
	20
	21	#include <sound/core.h>
	22	#include <sound/pcm.h>
	23	#include <sound/soc.h>
	24	#include <sound/soc-dapm.h>
	25	#include <sound/jack.h>
	26
	27	#include <asm/mach-types.h>
	28	#include <mach/hardware.h>
	29	#include <mach/audio.h>
	30	#include <mach/z2.h>
	31
	32	#include "../codecs/wm8750.h"
	33	#include "pxa2xx-pcm.h"
	34	#include "pxa2xx-i2s.h"
	35
	36	static struct snd_soc_card snd_soc_z2;
	37
	38	static int z2_hw_params(struct snd_pcm_substream *substream,
	39	struct snd_pcm_hw_params *params)
	40	{
	41	struct snd_soc_pcm_runtime *rtd = substream->private_data;
	42	struct snd_soc_dai *codec_dai = rtd->dai->codec_dai;
	43	struct snd_soc_dai *cpu_dai = rtd->dai->cpu_dai;
	44	unsigned int clk = 0;
	45	int ret = 0;
	46
	47	switch (params_rate(params)) {
	48	case 8000:
	49	case 16000:
	50	case 48000:
	51	case 96000:
	52	clk = 12288000;
	53	break;
	54	case 11025:
	55	case 22050:
	56	case 44100:
	57	clk = 11289600;
	58	break;
	59	}
	60
	61	/* set codec DAI configuration */
	62	ret = snd_soc_dai_set_fmt(codec_dai, SND_SOC_DAIFMT_I2S \|
	63	SND_SOC_DAIFMT_NB_NF \| SND_SOC_DAIFMT_CBS_CFS);
	64	if (ret < 0)
65	return ret;
66
67	/* set cpu DAI configuration */
68	ret = snd_soc_dai_set_fmt(cpu_dai, SND_SOC_DAIFMT_I2S \|
69	SND_SOC_DAIFMT_NB_NF \| SND_SOC_DAIFMT_CBS_CFS);
70	if (ret < 0)
71	return ret;
72
73	/* set the codec system clock for DAC and ADC */
74	ret = snd_soc_dai_set_sysclk(codec_dai, WM8750_SYSCLK, clk,
75	SND_SOC_CLOCK_IN);
76	if (ret < 0)
77	return ret;
78
79	/* set the I2S system clock as input (unused) */
80	ret = snd_soc_dai_set_sysclk(cpu_dai, PXA2XX_I2S_SYSCLK, 0,
81	SND_SOC_CLOCK_IN);
82	if (ret < 0)
83	return ret;
84
85	return 0;
86	}
87
88	static struct snd_soc_jack hs_jack;
89
90	/* Headset jack detection DAPM pins */
91	static struct snd_soc_jack_pin hs_jack_pins[] = {
92	{
93	.pin = "Mic Jack",
94	.mask = SND_JACK_MICROPHONE,
95	},
96	{
97	.pin = "Headphone Jack",
98	.mask = SND_JACK_HEADPHONE,
99	},
100	};
101
102	/* Headset jack detection gpios */
103	static struct snd_soc_jack_gpio hs_jack_gpios[] = {
104	{
105	.gpio = GPIO37_ZIPITZ2_HEADSET_DETECT,
106	.name = "hsdet-gpio",
107	.report = SND_JACK_HEADSET,
108	.debounce_time = 200,
109	},
110	};
111
112	/* z2 machine dapm widgets */
113	static const struct snd_soc_dapm_widget wm8750_dapm_widgets[] = {
114	SND_SOC_DAPM_HP("Headphone Jack", NULL),
115	SND_SOC_DAPM_MIC("Mic Jack", NULL),
116	SND_SOC_DAPM_SPK("Ext Spk", NULL),
117
118	/* headset is a mic and mono headphone */
119	SND_SOC_DAPM_HP("Headset Jack", NULL),
120	};
121
122	/* Z2 machine audio_map */
123	static const struct snd_soc_dapm_route audio_map[] = {
124
125	/* headphone connected to LOUT1, ROUT1 */
126	{"Headphone Jack", NULL, "LOUT1"},
127	{"Headphone Jack", NULL, "ROUT1"},
128
129	/* ext speaker connected to LOUT2, ROUT2 */
130	{"Ext Spk", NULL , "ROUT2"},
131	{"Ext Spk", NULL , "LOUT2"},
132
133	/* mic is connected to R input 2 - with bias */
134	{"RINPUT2", NULL, "Mic Bias"},
135	{"Mic Bias", NULL, "Mic Jack"},
136	};
137
138	/*
139	* Logic for a wm8750 as connected on a Z2 Device
140	*/
141	static int z2_wm8750_init(struct snd_soc_codec *codec)
142	{
143	int ret;
144
145	/* NC codec pins */
146	snd_soc_dapm_disable_pin(codec, "LINPUT3");
147	snd_soc_dapm_disable_pin(codec, "RINPUT3");
148	snd_soc_dapm_disable_pin(codec, "OUT3");
149	snd_soc_dapm_disable_pin(codec, "MONO");
150
151	/* Add z2 specific widgets */
152	snd_soc_dapm_new_controls(codec, wm8750_dapm_widgets,
153	ARRAY_SIZE(wm8750_dapm_widgets));
154
155	/* Set up z2 specific audio paths */
156	snd_soc_dapm_add_routes(codec, audio_map, ARRAY_SIZE(audio_map));
157
158	ret = snd_soc_dapm_sync(codec);
159	if (ret)
160	goto err;
161
162	/* Jack detection API stuff */
163	ret = snd_soc_jack_new(&snd_soc_z2, "Headset Jack", SND_JACK_HEADSET,
164	&hs_jack);
165	if (ret)
166	goto err;
167
168	ret = snd_soc_jack_add_pins(&hs_jack, ARRAY_SIZE(hs_jack_pins),
169	hs_jack_pins);
170	if (ret)
171	goto err;
172
173	ret = snd_soc_jack_add_gpios(&hs_jack, ARRAY_SIZE(hs_jack_gpios),
174	hs_jack_gpios);
175	if (ret)
176	goto err;
177
178	return 0;
179
180	err:
181	return ret;
182	}
183
184	static struct snd_soc_ops z2_ops = {
185	.hw_params = z2_hw_params,
186	};
187
188	/* z2 digital audio interface glue - connects codec <--> CPU */
189	static struct snd_soc_dai_link z2_dai = {
190	.name = "wm8750",
191	.stream_name = "WM8750",
192	.cpu_dai = &pxa_i2s_dai,
193	.codec_dai = &wm8750_dai,
194	.init = z2_wm8750_init,
195	.ops = &z2_ops,
196	};
197
198	/* z2 audio machine driver */
199	static struct snd_soc_card snd_soc_z2 = {
200	.name = "Z2",
201	.platform = &pxa2xx_soc_platform,
202	.dai_link = &z2_dai,
203	.num_links = 1,
204	};
205
206	/* z2 audio subsystem */
207	static struct snd_soc_device z2_snd_devdata = {
208	.card = &snd_soc_z2,
209	.codec_dev = &soc_codec_dev_wm8750,
210	};
211
212	static struct platform_device *z2_snd_device;
213
214	static int __init z2_init(void)
215	{
216	int ret;
217
218	if (!machine_is_zipit2())
219	return -ENODEV;
220
221	z2_snd_device = platform_device_alloc("soc-audio", -1);
222	if (!z2_snd_device)
223	return -ENOMEM;
224
225	platform_set_drvdata(z2_snd_device, &z2_snd_devdata);
226	z2_snd_devdata.dev = &z2_snd_device->dev;
227	ret = platform_device_add(z2_snd_device);
228
229	if (ret)
230	platform_device_put(z2_snd_device);
231
232	return ret;
233	}
234
235	static void __exit z2_exit(void)
236	{
237	platform_device_unregister(z2_snd_device);
238	}
239
240	module_init(z2_init);
241	module_exit(z2_exit);
242
243	MODULE_AUTHOR("Ken McGuire <kenm@desertweyr.com>, "
244	"Marek Vasut <marek.vasut@gmail.com>");
245	MODULE_DESCRIPTION("ALSA SoC ZipitZ2");
246	MODULE_LICENSE("GPL");