[deliverable/linux.git] / sound / soc / s6000 / s6105-ipcam.c

/*
 * ASoC driver for Stretch s6105 IP camera platform
 *
 * Author:      Daniel Gloeckner, <dg@emlix.com>
 * Copyright:   (C) 2009 emlix GmbH <info@emlix.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/i2c.h>
#include <sound/core.h>
#include <sound/pcm.h>
#include <sound/soc.h>
#include <sound/soc-dapm.h>

#include <variant/dmac.h>

#include "../codecs/tlv320aic3x.h"
#include "s6000-pcm.h"
#include "s6000-i2s.h"

#define S6105_CAM_CODEC_CLOCK 12288000

static int s6105_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;
	int ret = 0;

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

	/* set cpu DAI configuration */
	ret = snd_soc_dai_set_fmt(cpu_dai, SND_SOC_DAIFMT_CBM_CFM |
					   SND_SOC_DAIFMT_NB_NF);
	if (ret < 0)
		return ret;

	/* set the codec system clock */
	ret = snd_soc_dai_set_sysclk(codec_dai, 0, S6105_CAM_CODEC_CLOCK,
					    SND_SOC_CLOCK_OUT);
	if (ret < 0)
		return ret;

	return 0;
}

static struct snd_soc_ops s6105_ops = {
	.hw_params = s6105_hw_params,
};

/* s6105 machine dapm widgets */
static const struct snd_soc_dapm_widget aic3x_dapm_widgets[] = {
	SND_SOC_DAPM_LINE("Audio Out Differential", NULL),
	SND_SOC_DAPM_LINE("Audio Out Stereo", NULL),
	SND_SOC_DAPM_LINE("Audio In", NULL),
};

/* s6105 machine audio_mapnections to the codec pins */
static const struct snd_soc_dapm_route audio_map[] = {
	/* Audio Out connected to HPLOUT, HPLCOM, HPROUT */
	{"Audio Out Differential", NULL, "HPLOUT"},
	{"Audio Out Differential", NULL, "HPLCOM"},
	{"Audio Out Stereo", NULL, "HPLOUT"},
	{"Audio Out Stereo", NULL, "HPROUT"},

	/* Audio In connected to LINE1L, LINE1R */
	{"LINE1L", NULL, "Audio In"},
	{"LINE1R", NULL, "Audio In"},
};

static int output_type_info(struct snd_kcontrol *kcontrol,
			    struct snd_ctl_elem_info *uinfo)
{
	uinfo->type = SNDRV_CTL_ELEM_TYPE_ENUMERATED;
	uinfo->count = 1;
	uinfo->value.enumerated.items = 2;
	if (uinfo->value.enumerated.item) {
		uinfo->value.enumerated.item = 1;
		strcpy(uinfo->value.enumerated.name, "HPLOUT/HPROUT");
	} else {
		strcpy(uinfo->value.enumerated.name, "HPLOUT/HPLCOM");
	}
	return 0;
}

static int output_type_get(struct snd_kcontrol *kcontrol,
			   struct snd_ctl_elem_value *ucontrol)
{
	ucontrol->value.enumerated.item[0] = kcontrol->private_value;
	return 0;
}

static int output_type_put(struct snd_kcontrol *kcontrol,
			   struct snd_ctl_elem_value *ucontrol)
{
	struct snd_soc_codec *codec = kcontrol->private_data;
	unsigned int val = (ucontrol->value.enumerated.item[0] != 0);
	char *differential = "Audio Out Differential";
	char *stereo = "Audio Out Stereo";

	if (kcontrol->private_value == val)
		return 0;
	kcontrol->private_value = val;
	snd_soc_dapm_disable_pin(codec, val ? differential : stereo);
	snd_soc_dapm_sync(codec);
	snd_soc_dapm_enable_pin(codec, val ? stereo : differential);
	snd_soc_dapm_sync(codec);

	return 1;
}

static const struct snd_kcontrol_new audio_out_mux = {
	.iface = SNDRV_CTL_ELEM_IFACE_MIXER,
	.name = "Master Output Mux",
	.index = 0,
	.access = SNDRV_CTL_ELEM_ACCESS_READWRITE,
	.info = output_type_info,
	.get = output_type_get,
	.put = output_type_put,
	.private_value = 1 /* default to stereo */
};

/* Logic for a aic3x as connected on the s6105 ip camera ref design */
static int s6105_aic3x_init(struct snd_soc_codec *codec)
{
	/* Add s6105 specific widgets */
	snd_soc_dapm_new_controls(codec, aic3x_dapm_widgets,
				  ARRAY_SIZE(aic3x_dapm_widgets));

	/* Set up s6105 specific audio path audio_map */
	snd_soc_dapm_add_routes(codec, audio_map, ARRAY_SIZE(audio_map));

	/* not present */
	snd_soc_dapm_nc_pin(codec, "MONO_LOUT");
	snd_soc_dapm_nc_pin(codec, "LINE2L");
	snd_soc_dapm_nc_pin(codec, "LINE2R");

	/* not connected */
	snd_soc_dapm_nc_pin(codec, "MIC3L"); /* LINE2L on this chip */
	snd_soc_dapm_nc_pin(codec, "MIC3R"); /* LINE2R on this chip */
	snd_soc_dapm_nc_pin(codec, "LLOUT");
	snd_soc_dapm_nc_pin(codec, "RLOUT");
	snd_soc_dapm_nc_pin(codec, "HPRCOM");

	/* always connected */
	snd_soc_dapm_enable_pin(codec, "Audio In");

	/* must correspond to audio_out_mux.private_value initializer */
	snd_soc_dapm_disable_pin(codec, "Audio Out Differential");
	snd_soc_dapm_sync(codec);
	snd_soc_dapm_enable_pin(codec, "Audio Out Stereo");

	snd_soc_dapm_sync(codec);

	snd_ctl_add(codec->card, snd_ctl_new1(&audio_out_mux, codec));

	return 0;
}

/* s6105 digital audio interface glue - connects codec <--> CPU */
static struct snd_soc_dai_link s6105_dai = {
	.name = "TLV320AIC31",
	.stream_name = "AIC31",
	.cpu_dai = &s6000_i2s_dai,
	.codec_dai = &aic3x_dai,
	.init = s6105_aic3x_init,
	.ops = &s6105_ops,
};

/* s6105 audio machine driver */
static struct snd_soc_card snd_soc_card_s6105 = {
	.name = "Stretch IP Camera",
	.platform = &s6000_soc_platform,
	.dai_link = &s6105_dai,
	.num_links = 1,
};

/* s6105 audio private data */
static struct aic3x_setup_data s6105_aic3x_setup = {
};

/* s6105 audio subsystem */
static struct snd_soc_device s6105_snd_devdata = {
	.card = &snd_soc_card_s6105,
	.codec_dev = &soc_codec_dev_aic3x,
	.codec_data = &s6105_aic3x_setup,
};

static struct s6000_snd_platform_data __initdata s6105_snd_data = {
	.wide		= 0,
	.channel_in	= 0,
	.channel_out	= 1,
	.lines_in	= 1,
	.lines_out	= 1,
	.same_rate	= 1,
};

static struct platform_device *s6105_snd_device;

/* temporary i2c device creation until this can be moved into the machine
 * support file.
*/
static struct i2c_board_info i2c_device[] = {
	{ I2C_BOARD_INFO("tlv320aic33", 0x18), }
};

static int __init s6105_init(void)
{
	int ret;

	i2c_register_board_info(0, i2c_device, ARRAY_SIZE(i2c_device));

	s6105_snd_device = platform_device_alloc("soc-audio", -1);
	if (!s6105_snd_device)
		return -ENOMEM;

	platform_set_drvdata(s6105_snd_device, &s6105_snd_devdata);
	s6105_snd_devdata.dev = &s6105_snd_device->dev;
	platform_device_add_data(s6105_snd_device, &s6105_snd_data,
				 sizeof(s6105_snd_data));

	ret = platform_device_add(s6105_snd_device);
	if (ret)
		platform_device_put(s6105_snd_device);

	return ret;
}

static void __exit s6105_exit(void)
{
	platform_device_unregister(s6105_snd_device);
}

module_init(s6105_init);
module_exit(s6105_exit);

MODULE_AUTHOR("Daniel Gloeckner");
MODULE_DESCRIPTION("Stretch s6105 IP camera ASoC driver");
MODULE_LICENSE("GPL");
Commit	Line	Data
2b7dbbe0 DG	1	/*
	2	* ASoC driver for Stretch s6105 IP camera platform
	3	*
	4	* Author: Daniel Gloeckner, <dg@emlix.com>
	5	* Copyright: (C) 2009 emlix GmbH <info@emlix.com>
	6	*
	7	* This program is free software; you can redistribute it and/or modify
	8	* it under the terms of the GNU General Public License version 2 as
	9	* published by the Free Software Foundation.
	10	*/
	11
	12	#include <linux/module.h>
	13	#include <linux/moduleparam.h>
	14	#include <linux/timer.h>
	15	#include <linux/interrupt.h>
	16	#include <linux/platform_device.h>
aa6b904e	17	#include <linux/i2c.h>
2b7dbbe0 DG	18	#include <sound/core.h>
	19	#include <sound/pcm.h>
	20	#include <sound/soc.h>
	21	#include <sound/soc-dapm.h>
	22
	23	#include <variant/dmac.h>
	24
	25	#include "../codecs/tlv320aic3x.h"
	26	#include "s6000-pcm.h"
	27	#include "s6000-i2s.h"
	28
	29	#define S6105_CAM_CODEC_CLOCK 12288000
	30
	31	static int s6105_hw_params(struct snd_pcm_substream *substream,
	32	struct snd_pcm_hw_params *params)
	33	{
	34	struct snd_soc_pcm_runtime *rtd = substream->private_data;
	35	struct snd_soc_dai *codec_dai = rtd->dai->codec_dai;
	36	struct snd_soc_dai *cpu_dai = rtd->dai->cpu_dai;
	37	int ret = 0;
	38
	39	/* set codec DAI configuration */
	40	ret = snd_soc_dai_set_fmt(codec_dai, SND_SOC_DAIFMT_I2S \|
	41	SND_SOC_DAIFMT_CBM_CFM);
	42	if (ret < 0)
	43	return ret;
	44
	45	/* set cpu DAI configuration */
	46	ret = snd_soc_dai_set_fmt(cpu_dai, SND_SOC_DAIFMT_CBM_CFM \|
80fbe6ac	47	SND_SOC_DAIFMT_NB_NF);
2b7dbbe0 DG	48	if (ret < 0)
	49	return ret;
	50
	51	/* set the codec system clock */
	52	ret = snd_soc_dai_set_sysclk(codec_dai, 0, S6105_CAM_CODEC_CLOCK,
	53	SND_SOC_CLOCK_OUT);
	54	if (ret < 0)
	55	return ret;
	56
	57	return 0;
	58	}
	59
	60	static struct snd_soc_ops s6105_ops = {
	61	.hw_params = s6105_hw_params,
	62	};
	63
	64	/* s6105 machine dapm widgets */
	65	static const struct snd_soc_dapm_widget aic3x_dapm_widgets[] = {
	66	SND_SOC_DAPM_LINE("Audio Out Differential", NULL),
	67	SND_SOC_DAPM_LINE("Audio Out Stereo", NULL),
	68	SND_SOC_DAPM_LINE("Audio In", NULL),
	69	};
	70
	71	/* s6105 machine audio_mapnections to the codec pins */
	72	static const struct snd_soc_dapm_route audio_map[] = {
	73	/* Audio Out connected to HPLOUT, HPLCOM, HPROUT */
	74	{"Audio Out Differential", NULL, "HPLOUT"},
	75	{"Audio Out Differential", NULL, "HPLCOM"},
	76	{"Audio Out Stereo", NULL, "HPLOUT"},
	77	{"Audio Out Stereo", NULL, "HPROUT"},
	78
	79	/* Audio In connected to LINE1L, LINE1R */
	80	{"LINE1L", NULL, "Audio In"},
	81	{"LINE1R", NULL, "Audio In"},
	82	};
	83
	84	static int output_type_info(struct snd_kcontrol *kcontrol,
	85	struct snd_ctl_elem_info *uinfo)
	86	{
	87	uinfo->type = SNDRV_CTL_ELEM_TYPE_ENUMERATED;
	88	uinfo->count = 1;
	89	uinfo->value.enumerated.items = 2;
	90	if (uinfo->value.enumerated.item) {
	91	uinfo->value.enumerated.item = 1;
	92	strcpy(uinfo->value.enumerated.name, "HPLOUT/HPROUT");
	93	} else {
	94	strcpy(uinfo->value.enumerated.name, "HPLOUT/HPLCOM");
	95	}
	96	return 0;
	97	}
	98
	99	static int output_type_get(struct snd_kcontrol *kcontrol,
	100	struct snd_ctl_elem_value *ucontrol)
	101	{
	102	ucontrol->value.enumerated.item[0] = kcontrol->private_value;
	103	return 0;
	104	}
	105
	106	static int output_type_put(struct snd_kcontrol *kcontrol,
	107	struct snd_ctl_elem_value *ucontrol)
	108	{
	109	struct snd_soc_codec *codec = kcontrol->private_data;
	110	unsigned int val = (ucontrol->value.enumerated.item[0] != 0);
	111	char *differential = "Audio Out Differential";
112	char *stereo = "Audio Out Stereo";
113
114	if (kcontrol->private_value == val)
115	return 0;
116	kcontrol->private_value = val;
117	snd_soc_dapm_disable_pin(codec, val ? differential : stereo);
118	snd_soc_dapm_sync(codec);
119	snd_soc_dapm_enable_pin(codec, val ? stereo : differential);
120	snd_soc_dapm_sync(codec);
121
122	return 1;
123	}
124
125	static const struct snd_kcontrol_new audio_out_mux = {
126	.iface = SNDRV_CTL_ELEM_IFACE_MIXER,
127	.name = "Master Output Mux",
128	.index = 0,
129	.access = SNDRV_CTL_ELEM_ACCESS_READWRITE,
130	.info = output_type_info,
131	.get = output_type_get,
132	.put = output_type_put,
133	.private_value = 1 /* default to stereo */
134	};
135
136	/* Logic for a aic3x as connected on the s6105 ip camera ref design */
137	static int s6105_aic3x_init(struct snd_soc_codec *codec)
138	{
139	/* Add s6105 specific widgets */
140	snd_soc_dapm_new_controls(codec, aic3x_dapm_widgets,
141	ARRAY_SIZE(aic3x_dapm_widgets));
142
143	/* Set up s6105 specific audio path audio_map */
144	snd_soc_dapm_add_routes(codec, audio_map, ARRAY_SIZE(audio_map));
145
146	/* not present */
147	snd_soc_dapm_nc_pin(codec, "MONO_LOUT");
148	snd_soc_dapm_nc_pin(codec, "LINE2L");
149	snd_soc_dapm_nc_pin(codec, "LINE2R");
150
151	/* not connected */
152	snd_soc_dapm_nc_pin(codec, "MIC3L"); /* LINE2L on this chip */
153	snd_soc_dapm_nc_pin(codec, "MIC3R"); /* LINE2R on this chip */
154	snd_soc_dapm_nc_pin(codec, "LLOUT");
155	snd_soc_dapm_nc_pin(codec, "RLOUT");
156	snd_soc_dapm_nc_pin(codec, "HPRCOM");
157
158	/* always connected */
159	snd_soc_dapm_enable_pin(codec, "Audio In");
160
161	/* must correspond to audio_out_mux.private_value initializer */
162	snd_soc_dapm_disable_pin(codec, "Audio Out Differential");
163	snd_soc_dapm_sync(codec);
164	snd_soc_dapm_enable_pin(codec, "Audio Out Stereo");
165
166	snd_soc_dapm_sync(codec);
167
168	snd_ctl_add(codec->card, snd_ctl_new1(&audio_out_mux, codec));
169
170	return 0;
171	}
172
173	/* s6105 digital audio interface glue - connects codec <--> CPU */
174	static struct snd_soc_dai_link s6105_dai = {
175	.name = "TLV320AIC31",
176	.stream_name = "AIC31",
177	.cpu_dai = &s6000_i2s_dai,
178	.codec_dai = &aic3x_dai,
179	.init = s6105_aic3x_init,
180	.ops = &s6105_ops,
181	};
182
183	/* s6105 audio machine driver */
184	static struct snd_soc_card snd_soc_card_s6105 = {
185	.name = "Stretch IP Camera",
186	.platform = &s6000_soc_platform,
187	.dai_link = &s6105_dai,
188	.num_links = 1,
189	};
190
191	/* s6105 audio private data */
192	static struct aic3x_setup_data s6105_aic3x_setup = {
2b7dbbe0 DG	193	};
	194
	195	/* s6105 audio subsystem */
	196	static struct snd_soc_device s6105_snd_devdata = {
	197	.card = &snd_soc_card_s6105,
	198	.codec_dev = &soc_codec_dev_aic3x,
	199	.codec_data = &s6105_aic3x_setup,
	200	};
	201
	202	static struct s6000_snd_platform_data __initdata s6105_snd_data = {
	203	.wide = 0,
	204	.channel_in = 0,
	205	.channel_out = 1,
	206	.lines_in = 1,
	207	.lines_out = 1,
	208	.same_rate = 1,
	209	};
	210
	211	static struct platform_device *s6105_snd_device;
	212
aa6b904e BD	213	/* temporary i2c device creation until this can be moved into the machine
	214	* support file.
	215	*/
	216	static struct i2c_board_info i2c_device[] = {
	217	{ I2C_BOARD_INFO("tlv320aic33", 0x18), }
	218	};
	219
2b7dbbe0 DG	220	static int __init s6105_init(void)
	221	{
	222	int ret;
	223
aa6b904e BD	224	i2c_register_board_info(0, i2c_device, ARRAY_SIZE(i2c_device));
aa6b904e BD	225
2b7dbbe0 DG	226	s6105_snd_device = platform_device_alloc("soc-audio", -1);
	227	if (!s6105_snd_device)
	228	return -ENOMEM;
	229
	230	platform_set_drvdata(s6105_snd_device, &s6105_snd_devdata);
	231	s6105_snd_devdata.dev = &s6105_snd_device->dev;
	232	platform_device_add_data(s6105_snd_device, &s6105_snd_data,
	233	sizeof(s6105_snd_data));
	234
	235	ret = platform_device_add(s6105_snd_device);
	236	if (ret)
	237	platform_device_put(s6105_snd_device);
	238
	239	return ret;
	240	}
	241
	242	static void __exit s6105_exit(void)
	243	{
	244	platform_device_unregister(s6105_snd_device);
	245	}
	246
	247	module_init(s6105_init);
	248	module_exit(s6105_exit);
	249
	250	MODULE_AUTHOR("Daniel Gloeckner");
	251	MODULE_DESCRIPTION("Stretch s6105 IP camera ASoC driver");
	252	MODULE_LICENSE("GPL");