[deliverable/linux.git] / sound / soc / davinci / davinci-evm.c

/*
 * ASoC driver for TI DAVINCI EVM platform
 *
 * Author:      Vladimir Barinov, <vbarinov@embeddedalley.com>
 * Copyright:   (C) 2007 MontaVista Software, Inc., <source@mvista.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 <sound/core.h>
#include <sound/pcm.h>
#include <sound/soc.h>
#include <sound/soc-dapm.h>

#include <asm/dma.h>
#include <asm/mach-types.h>

#include <mach/asp.h>
#include <mach/edma.h>
#include <mach/mux.h>

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


#define AUDIO_FORMAT (SND_SOC_DAIFMT_DSP_B | \
		SND_SOC_DAIFMT_CBM_CFM | SND_SOC_DAIFMT_IB_NF)
static int evm_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;
	unsigned sysclk;

	/* ASP1 on DM355 EVM is clocked by an external oscillator */
	if (machine_is_davinci_dm355_evm())
		sysclk = 27000000;

	/* ASP0 in DM6446 EVM is clocked by U55, as configured by
	 * board-dm644x-evm.c using GPIOs from U18.  There are six
	 * options; here we "know" we use a 48 KHz sample rate.
	 */
	else if (machine_is_davinci_evm())
		sysclk = 12288000;

	else
		return -EINVAL;

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

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

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

	return 0;
}

static struct snd_soc_ops evm_ops = {
	.hw_params = evm_hw_params,
};

/* davinci-evm machine dapm widgets */
static const struct snd_soc_dapm_widget aic3x_dapm_widgets[] = {
	SND_SOC_DAPM_HP("Headphone Jack", NULL),
	SND_SOC_DAPM_LINE("Line Out", NULL),
	SND_SOC_DAPM_MIC("Mic Jack", NULL),
	SND_SOC_DAPM_LINE("Line In", NULL),
};

/* davinci-evm machine audio_mapnections to the codec pins */
static const struct snd_soc_dapm_route audio_map[] = {
	/* Headphone connected to HPLOUT, HPROUT */
	{"Headphone Jack", NULL, "HPLOUT"},
	{"Headphone Jack", NULL, "HPROUT"},

	/* Line Out connected to LLOUT, RLOUT */
	{"Line Out", NULL, "LLOUT"},
	{"Line Out", NULL, "RLOUT"},

	/* Mic connected to (MIC3L | MIC3R) */
	{"MIC3L", NULL, "Mic Bias 2V"},
	{"MIC3R", NULL, "Mic Bias 2V"},
	{"Mic Bias 2V", NULL, "Mic Jack"},

	/* Line In connected to (LINE1L | LINE2L), (LINE1R | LINE2R) */
	{"LINE1L", NULL, "Line In"},
	{"LINE2L", NULL, "Line In"},
	{"LINE1R", NULL, "Line In"},
	{"LINE2R", NULL, "Line In"},
};

/* Logic for a aic3x as connected on a davinci-evm */
static int evm_aic3x_init(struct snd_soc_codec *codec)
{
	/* Add davinci-evm specific widgets */
	snd_soc_dapm_new_controls(codec, aic3x_dapm_widgets,
				  ARRAY_SIZE(aic3x_dapm_widgets));

	/* Set up davinci-evm specific audio path audio_map */
	snd_soc_dapm_add_routes(codec, audio_map, ARRAY_SIZE(audio_map));

	/* not connected */
	snd_soc_dapm_disable_pin(codec, "MONO_LOUT");
	snd_soc_dapm_disable_pin(codec, "HPLCOM");
	snd_soc_dapm_disable_pin(codec, "HPRCOM");

	/* always connected */
	snd_soc_dapm_enable_pin(codec, "Headphone Jack");
	snd_soc_dapm_enable_pin(codec, "Line Out");
	snd_soc_dapm_enable_pin(codec, "Mic Jack");
	snd_soc_dapm_enable_pin(codec, "Line In");

	snd_soc_dapm_sync(codec);

	return 0;
}

/* davinci-evm digital audio interface glue - connects codec <--> CPU */
static struct snd_soc_dai_link evm_dai = {
	.name = "TLV320AIC3X",
	.stream_name = "AIC3X",
	.cpu_dai = &davinci_i2s_dai,
	.codec_dai = &aic3x_dai,
	.init = evm_aic3x_init,
	.ops = &evm_ops,
};

/* davinci-evm audio machine driver */
static struct snd_soc_card snd_soc_card_evm = {
	.name = "DaVinci EVM",
	.platform = &davinci_soc_platform,
	.dai_link = &evm_dai,
	.num_links = 1,
};

/* evm audio private data */
static struct aic3x_setup_data evm_aic3x_setup = {
	.i2c_bus = 1,
	.i2c_address = 0x1b,
};

/* evm audio subsystem */
static struct snd_soc_device evm_snd_devdata = {
	.card = &snd_soc_card_evm,
	.codec_dev = &soc_codec_dev_aic3x,
	.codec_data = &evm_aic3x_setup,
};

/* DM6446 EVM uses ASP0; line-out is a pair of RCA jacks */
static struct resource evm_snd_resources[] = {
	{
		.start = DAVINCI_ASP0_BASE,
		.end = DAVINCI_ASP0_BASE + SZ_8K - 1,
		.flags = IORESOURCE_MEM,
	},
};

static struct evm_snd_platform_data evm_snd_data = {
	.tx_dma_ch	= DAVINCI_DMA_ASP0_TX,
	.rx_dma_ch	= DAVINCI_DMA_ASP0_RX,
};

/* DM335 EVM uses ASP1; line-out is a stereo mini-jack */
static struct resource dm335evm_snd_resources[] = {
	{
		.start = DAVINCI_ASP1_BASE,
		.end = DAVINCI_ASP1_BASE + SZ_8K - 1,
		.flags = IORESOURCE_MEM,
	},
};

static struct evm_snd_platform_data dm335evm_snd_data = {
	.tx_dma_ch	= DAVINCI_DMA_ASP1_TX,
	.rx_dma_ch	= DAVINCI_DMA_ASP1_RX,
};

static struct platform_device *evm_snd_device;

static int __init evm_init(void)
{
	struct resource *resources;
	unsigned num_resources;
	struct evm_snd_platform_data *data;
	int index;
	int ret;

	if (machine_is_davinci_evm()) {
		davinci_cfg_reg(DM644X_MCBSP);

		resources = evm_snd_resources;
		num_resources = ARRAY_SIZE(evm_snd_resources);
		data = &evm_snd_data;
		index = 0;
	} else if (machine_is_davinci_dm355_evm()) {
		/* we don't use ASP1 IRQs, or we'd need to mux them ... */
		davinci_cfg_reg(DM355_EVT8_ASP1_TX);
		davinci_cfg_reg(DM355_EVT9_ASP1_RX);

		resources = dm335evm_snd_resources;
		num_resources = ARRAY_SIZE(dm335evm_snd_resources);
		data = &dm335evm_snd_data;
		index = 1;
	} else
		return -EINVAL;

	evm_snd_device = platform_device_alloc("soc-audio", index);
	if (!evm_snd_device)
		return -ENOMEM;

	platform_set_drvdata(evm_snd_device, &evm_snd_devdata);
	evm_snd_devdata.dev = &evm_snd_device->dev;
	platform_device_add_data(evm_snd_device, data, sizeof(*data));

	ret = platform_device_add_resources(evm_snd_device, resources,
			num_resources);
	if (ret) {
		platform_device_put(evm_snd_device);
		return ret;
	}

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

	return ret;
}

static void __exit evm_exit(void)
{
	platform_device_unregister(evm_snd_device);
}

module_init(evm_init);
module_exit(evm_exit);

MODULE_AUTHOR("Vladimir Barinov");
MODULE_DESCRIPTION("TI DAVINCI EVM ASoC driver");
MODULE_LICENSE("GPL");
Commit	Line	Data
310355c1 VB	1	/*
	2	* ASoC driver for TI DAVINCI EVM platform
	3	*
d6b52039	4	* Author: Vladimir Barinov, <vbarinov@embeddedalley.com>
310355c1 VB	5	* Copyright: (C) 2007 MontaVista Software, Inc., <source@mvista.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>
	17	#include <sound/core.h>
	18	#include <sound/pcm.h>
	19	#include <sound/soc.h>
	20	#include <sound/soc-dapm.h>
	21
310355c1	22	#include <asm/dma.h>
f492ec9f DB	23	#include <asm/mach-types.h>
	24
	25	#include <mach/asp.h>
	26	#include <mach/edma.h>
	27	#include <mach/mux.h>
310355c1 VB	28
	29	#include "../codecs/tlv320aic3x.h"
	30	#include "davinci-pcm.h"
	31	#include "davinci-i2s.h"
	32
310355c1	33
d6f83396 TK	34	#define AUDIO_FORMAT (SND_SOC_DAIFMT_DSP_B \| \
d6f83396 TK	35	SND_SOC_DAIFMT_CBM_CFM \| SND_SOC_DAIFMT_IB_NF)
310355c1 VB	36	static int evm_hw_params(struct snd_pcm_substream *substream,
	37	struct snd_pcm_hw_params *params)
	38	{
	39	struct snd_soc_pcm_runtime *rtd = substream->private_data;
9cb132d7 LG	40	struct snd_soc_dai *codec_dai = rtd->dai->codec_dai;
9cb132d7 LG	41	struct snd_soc_dai *cpu_dai = rtd->dai->cpu_dai;
310355c1	42	int ret = 0;
05d5e991 DB	43	unsigned sysclk;
	44
	45	/* ASP1 on DM355 EVM is clocked by an external oscillator */
	46	if (machine_is_davinci_dm355_evm())
	47	sysclk = 27000000;
	48
	49	/* ASP0 in DM6446 EVM is clocked by U55, as configured by
	50	* board-dm644x-evm.c using GPIOs from U18. There are six
	51	* options; here we "know" we use a 48 KHz sample rate.
	52	*/
	53	else if (machine_is_davinci_evm())
	54	sysclk = 12288000;
	55
	56	else
	57	return -EINVAL;
310355c1 VB	58
310355c1 VB	59	/* set codec DAI configuration */
9e031624	60	ret = snd_soc_dai_set_fmt(codec_dai, AUDIO_FORMAT);
310355c1 VB	61	if (ret < 0)
	62	return ret;
	63
	64	/* set cpu DAI configuration */
9e031624	65	ret = snd_soc_dai_set_fmt(cpu_dai, AUDIO_FORMAT);
310355c1 VB	66	if (ret < 0)
	67	return ret;
	68
	69	/* set the codec system clock */
05d5e991	70	ret = snd_soc_dai_set_sysclk(codec_dai, 0, sysclk, SND_SOC_CLOCK_OUT);
310355c1 VB	71	if (ret < 0)
	72	return ret;
	73
	74	return 0;
	75	}
	76
	77	static struct snd_soc_ops evm_ops = {
	78	.hw_params = evm_hw_params,
	79	};
	80
	81	/* davinci-evm machine dapm widgets */
	82	static const struct snd_soc_dapm_widget aic3x_dapm_widgets[] = {
	83	SND_SOC_DAPM_HP("Headphone Jack", NULL),
	84	SND_SOC_DAPM_LINE("Line Out", NULL),
	85	SND_SOC_DAPM_MIC("Mic Jack", NULL),
	86	SND_SOC_DAPM_LINE("Line In", NULL),
	87	};
	88
	89	/* davinci-evm machine audio_mapnections to the codec pins */
acf497f9	90	static const struct snd_soc_dapm_route audio_map[] = {
310355c1 VB	91	/* Headphone connected to HPLOUT, HPROUT */
	92	{"Headphone Jack", NULL, "HPLOUT"},
	93	{"Headphone Jack", NULL, "HPROUT"},
	94
	95	/* Line Out connected to LLOUT, RLOUT */
	96	{"Line Out", NULL, "LLOUT"},
	97	{"Line Out", NULL, "RLOUT"},
	98
	99	/* Mic connected to (MIC3L \| MIC3R) */
	100	{"MIC3L", NULL, "Mic Bias 2V"},
	101	{"MIC3R", NULL, "Mic Bias 2V"},
	102	{"Mic Bias 2V", NULL, "Mic Jack"},
	103
	104	/* Line In connected to (LINE1L \| LINE2L), (LINE1R \| LINE2R) */
	105	{"LINE1L", NULL, "Line In"},
	106	{"LINE2L", NULL, "Line In"},
	107	{"LINE1R", NULL, "Line In"},
	108	{"LINE2R", NULL, "Line In"},
310355c1 VB	109	};
	110
	111	/* Logic for a aic3x as connected on a davinci-evm */
	112	static int evm_aic3x_init(struct snd_soc_codec *codec)
	113	{
310355c1	114	/* Add davinci-evm specific widgets */
acf497f9 MB	115	snd_soc_dapm_new_controls(codec, aic3x_dapm_widgets,
acf497f9 MB	116	ARRAY_SIZE(aic3x_dapm_widgets));
310355c1 VB	117
310355c1 VB	118	/* Set up davinci-evm specific audio path audio_map */
acf497f9	119	snd_soc_dapm_add_routes(codec, audio_map, ARRAY_SIZE(audio_map));
310355c1 VB	120
310355c1 VB	121	/* not connected */
a5302181 LG	122	snd_soc_dapm_disable_pin(codec, "MONO_LOUT");
	123	snd_soc_dapm_disable_pin(codec, "HPLCOM");
	124	snd_soc_dapm_disable_pin(codec, "HPRCOM");
310355c1 VB	125
310355c1 VB	126	/* always connected */
a5302181 LG	127	snd_soc_dapm_enable_pin(codec, "Headphone Jack");
	128	snd_soc_dapm_enable_pin(codec, "Line Out");
	129	snd_soc_dapm_enable_pin(codec, "Mic Jack");
	130	snd_soc_dapm_enable_pin(codec, "Line In");
310355c1	131
a5302181	132	snd_soc_dapm_sync(codec);
310355c1 VB	133
	134	return 0;
	135	}
	136
	137	/* davinci-evm digital audio interface glue - connects codec <--> CPU */
	138	static struct snd_soc_dai_link evm_dai = {
	139	.name = "TLV320AIC3X",
	140	.stream_name = "AIC3X",
	141	.cpu_dai = &davinci_i2s_dai,
	142	.codec_dai = &aic3x_dai,
	143	.init = evm_aic3x_init,
	144	.ops = &evm_ops,
	145	};
	146
	147	/* davinci-evm audio machine driver */
87506549	148	static struct snd_soc_card snd_soc_card_evm = {
310355c1	149	.name = "DaVinci EVM",
87689d56	150	.platform = &davinci_soc_platform,
310355c1 VB	151	.dai_link = &evm_dai,
	152	.num_links = 1,
	153	};
	154
	155	/* evm audio private data */
	156	static struct aic3x_setup_data evm_aic3x_setup = {
f492ec9f	157	.i2c_bus = 1,
310355c1 VB	158	.i2c_address = 0x1b,
	159	};
	160
	161	/* evm audio subsystem */
	162	static struct snd_soc_device evm_snd_devdata = {
87506549	163	.card = &snd_soc_card_evm,
310355c1 VB	164	.codec_dev = &soc_codec_dev_aic3x,
	165	.codec_data = &evm_aic3x_setup,
	166	};
	167
f492ec9f	168	/* DM6446 EVM uses ASP0; line-out is a pair of RCA jacks */
310355c1 VB	169	static struct resource evm_snd_resources[] = {
310355c1 VB	170	{
f492ec9f DB	171	.start = DAVINCI_ASP0_BASE,
f492ec9f DB	172	.end = DAVINCI_ASP0_BASE + SZ_8K - 1,
310355c1 VB	173	.flags = IORESOURCE_MEM,
	174	},
	175	};
	176
	177	static struct evm_snd_platform_data evm_snd_data = {
f492ec9f DB	178	.tx_dma_ch = DAVINCI_DMA_ASP0_TX,
	179	.rx_dma_ch = DAVINCI_DMA_ASP0_RX,
	180	};
	181
	182	/* DM335 EVM uses ASP1; line-out is a stereo mini-jack */
	183	static struct resource dm335evm_snd_resources[] = {
	184	{
	185	.start = DAVINCI_ASP1_BASE,
	186	.end = DAVINCI_ASP1_BASE + SZ_8K - 1,
	187	.flags = IORESOURCE_MEM,
	188	},
	189	};
	190
	191	static struct evm_snd_platform_data dm335evm_snd_data = {
	192	.tx_dma_ch = DAVINCI_DMA_ASP1_TX,
	193	.rx_dma_ch = DAVINCI_DMA_ASP1_RX,
310355c1 VB	194	};
	195
	196	static struct platform_device *evm_snd_device;
	197
	198	static int __init evm_init(void)
	199	{
f492ec9f DB	200	struct resource *resources;
	201	unsigned num_resources;
	202	struct evm_snd_platform_data *data;
	203	int index;
310355c1 VB	204	int ret;
310355c1 VB	205
f492ec9f DB	206	if (machine_is_davinci_evm()) {
	207	davinci_cfg_reg(DM644X_MCBSP);
	208
	209	resources = evm_snd_resources;
	210	num_resources = ARRAY_SIZE(evm_snd_resources);
	211	data = &evm_snd_data;
	212	index = 0;
	213	} else if (machine_is_davinci_dm355_evm()) {
	214	/* we don't use ASP1 IRQs, or we'd need to mux them ... */
	215	davinci_cfg_reg(DM355_EVT8_ASP1_TX);
	216	davinci_cfg_reg(DM355_EVT9_ASP1_RX);
	217
	218	resources = dm335evm_snd_resources;
	219	num_resources = ARRAY_SIZE(dm335evm_snd_resources);
	220	data = &dm335evm_snd_data;
	221	index = 1;
	222	} else
	223	return -EINVAL;
	224
	225	evm_snd_device = platform_device_alloc("soc-audio", index);
310355c1 VB	226	if (!evm_snd_device)
	227	return -ENOMEM;
	228
	229	platform_set_drvdata(evm_snd_device, &evm_snd_devdata);
	230	evm_snd_devdata.dev = &evm_snd_device->dev;
f492ec9f	231	platform_device_add_data(evm_snd_device, data, sizeof(*data));
310355c1	232
f492ec9f DB	233	ret = platform_device_add_resources(evm_snd_device, resources,
f492ec9f DB	234	num_resources);
310355c1 VB	235	if (ret) {
	236	platform_device_put(evm_snd_device);
	237	return ret;
	238	}
	239
	240	ret = platform_device_add(evm_snd_device);
	241	if (ret)
	242	platform_device_put(evm_snd_device);
	243
	244	return ret;
	245	}
	246
	247	static void __exit evm_exit(void)
	248	{
	249	platform_device_unregister(evm_snd_device);
	250	}
	251
	252	module_init(evm_init);
	253	module_exit(evm_exit);
	254
	255	MODULE_AUTHOR("Vladimir Barinov");
	256	MODULE_DESCRIPTION("TI DAVINCI EVM ASoC driver");
	257	MODULE_LICENSE("GPL");