[deliverable/linux.git] / sound / soc / omap / am3517evm.c

/*
 * am3517evm.c  -- ALSA SoC support for OMAP3517 / AM3517 EVM
 *
 * Author: Anuj Aggarwal <anuj.aggarwal@ti.com>
 *
 * Based on sound/soc/omap/beagle.c by Steve Sakoman
 *
 * Copyright (C) 2009 Texas Instruments Incorporated
 *
 * 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 version 2.
 *
 * This program is distributed "as is" WITHOUT ANY WARRANTY of any kind,
 * whether express or implied; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
 * General Public License for more details.
 */

#include <linux/clk.h>
#include <linux/platform_device.h>
#include <linux/module.h>
#include <sound/core.h>
#include <sound/pcm.h>
#include <sound/soc.h>

#include <asm/mach-types.h>
#include <mach/hardware.h>
#include <mach/gpio.h>
#include <plat/mcbsp.h>

#include "omap-mcbsp.h"
#include "omap-pcm.h"

#include "../codecs/tlv320aic23.h"

#define CODEC_CLOCK 	12000000

static int am3517evm_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;

	/* Set the codec system clock for DAC and ADC */
	ret = snd_soc_dai_set_sysclk(codec_dai, 0,
			CODEC_CLOCK, SND_SOC_CLOCK_IN);
	if (ret < 0) {
		printk(KERN_ERR "can't set codec system clock\n");
		return ret;
	}

	ret = snd_soc_dai_set_sysclk(cpu_dai, OMAP_MCBSP_CLKR_SRC_CLKX, 0,
				SND_SOC_CLOCK_IN);
	if (ret < 0) {
		printk(KERN_ERR "can't set CPU system clock OMAP_MCBSP_CLKR_SRC_CLKX\n");
		return ret;
	}

	snd_soc_dai_set_sysclk(cpu_dai, OMAP_MCBSP_FSR_SRC_FSX, 0,
				SND_SOC_CLOCK_IN);
	if (ret < 0) {
		printk(KERN_ERR "can't set CPU system clock OMAP_MCBSP_FSR_SRC_FSX\n");
		return ret;
	}

	return 0;
}

static struct snd_soc_ops am3517evm_ops = {
	.hw_params = am3517evm_hw_params,
};

/* am3517evm machine dapm widgets */
static const struct snd_soc_dapm_widget tlv320aic23_dapm_widgets[] = {
	SND_SOC_DAPM_HP("Line Out", NULL),
	SND_SOC_DAPM_LINE("Line In", NULL),
	SND_SOC_DAPM_MIC("Mic In", NULL),
};

static const struct snd_soc_dapm_route audio_map[] = {
	/* Line Out connected to LLOUT, RLOUT */
	{"Line Out", NULL, "LOUT"},
	{"Line Out", NULL, "ROUT"},

	{"LLINEIN", NULL, "Line In"},
	{"RLINEIN", NULL, "Line In"},

	{"MICIN", NULL, "Mic In"},
};

/* Digital audio interface glue - connects codec <--> CPU */
static struct snd_soc_dai_link am3517evm_dai = {
	.name = "TLV320AIC23",
	.stream_name = "AIC23",
	.cpu_dai_name ="omap-mcbsp-dai.0",
	.codec_dai_name = "tlv320aic23-hifi",
	.platform_name = "omap-pcm-audio",
	.codec_name = "tlv320aic23-codec.2-001a",
	.dai_fmt = SND_SOC_DAIFMT_DSP_B | SND_SOC_DAIFMT_NB_NF |
		   SND_SOC_DAIFMT_CBM_CFM,
	.ops = &am3517evm_ops,
};

/* Audio machine driver */
static struct snd_soc_card snd_soc_am3517evm = {
	.name = "am3517evm",
	.dai_link = &am3517evm_dai,
	.num_links = 1,

	.dapm_widgets = tlv320aic23_dapm_widgets,
	.num_dapm_widgets = ARRAY_SIZE(tlv320aic23_dapm_widgets),
	.dapm_routes = audio_map,
	.num_dapm_routes = ARRAY_SIZE(audio_map),
};

static struct platform_device *am3517evm_snd_device;

static int __init am3517evm_soc_init(void)
{
	int ret;

	if (!machine_is_omap3517evm())
		return -ENODEV;
	pr_info("OMAP3517 / AM3517 EVM SoC init\n");

	am3517evm_snd_device = platform_device_alloc("soc-audio", -1);
	if (!am3517evm_snd_device) {
		printk(KERN_ERR "Platform device allocation failed\n");
		return -ENOMEM;
	}

	platform_set_drvdata(am3517evm_snd_device, &snd_soc_am3517evm);

	ret = platform_device_add(am3517evm_snd_device);
	if (ret)
		goto err1;

	return 0;

err1:
	printk(KERN_ERR "Unable to add platform device\n");
	platform_device_put(am3517evm_snd_device);

	return ret;
}

static void __exit am3517evm_soc_exit(void)
{
	platform_device_unregister(am3517evm_snd_device);
}

module_init(am3517evm_soc_init);
module_exit(am3517evm_soc_exit);

MODULE_AUTHOR("Anuj Aggarwal <anuj.aggarwal@ti.com>");
MODULE_DESCRIPTION("ALSA SoC OMAP3517 / AM3517 EVM");
MODULE_LICENSE("GPL v2");
Commit	Line	Data
89e9abe7 AA	1	/*
	2	* am3517evm.c -- ALSA SoC support for OMAP3517 / AM3517 EVM
	3	*
	4	* Author: Anuj Aggarwal <anuj.aggarwal@ti.com>
	5	*
	6	* Based on sound/soc/omap/beagle.c by Steve Sakoman
	7	*
	8	* Copyright (C) 2009 Texas Instruments Incorporated
	9	*
	10	* This program is free software; you can redistribute it and/or modify it
	11	* under the terms of the GNU General Public License as published by the
	12	* Free Software Foundation version 2.
	13	*
	14	* This program is distributed "as is" WITHOUT ANY WARRANTY of any kind,
	15	* whether express or implied; without even the implied warranty of
	16	* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
	17	* General Public License for more details.
	18	*/
	19
	20	#include <linux/clk.h>
	21	#include <linux/platform_device.h>
da155d5b	22	#include <linux/module.h>
89e9abe7 AA	23	#include <sound/core.h>
	24	#include <sound/pcm.h>
	25	#include <sound/soc.h>
89e9abe7 AA	26
	27	#include <asm/mach-types.h>
	28	#include <mach/hardware.h>
	29	#include <mach/gpio.h>
	30	#include <plat/mcbsp.h>
	31
	32	#include "omap-mcbsp.h"
	33	#include "omap-pcm.h"
	34
	35	#include "../codecs/tlv320aic23.h"
	36
	37	#define CODEC_CLOCK 12000000
	38
	39	static int am3517evm_hw_params(struct snd_pcm_substream *substream,
	40	struct snd_pcm_hw_params *params)
	41	{
	42	struct snd_soc_pcm_runtime *rtd = substream->private_data;
f0fba2ad LG	43	struct snd_soc_dai *codec_dai = rtd->codec_dai;
f0fba2ad LG	44	struct snd_soc_dai *cpu_dai = rtd->cpu_dai;
89e9abe7 AA	45	int ret;
89e9abe7 AA	46
89e9abe7 AA	47	/* Set the codec system clock for DAC and ADC */
	48	ret = snd_soc_dai_set_sysclk(codec_dai, 0,
	49	CODEC_CLOCK, SND_SOC_CLOCK_IN);
	50	if (ret < 0) {
	51	printk(KERN_ERR "can't set codec system clock\n");
	52	return ret;
	53	}
	54
	55	ret = snd_soc_dai_set_sysclk(cpu_dai, OMAP_MCBSP_CLKR_SRC_CLKX, 0,
	56	SND_SOC_CLOCK_IN);
	57	if (ret < 0) {
	58	printk(KERN_ERR "can't set CPU system clock OMAP_MCBSP_CLKR_SRC_CLKX\n");
	59	return ret;
	60	}
	61
	62	snd_soc_dai_set_sysclk(cpu_dai, OMAP_MCBSP_FSR_SRC_FSX, 0,
	63	SND_SOC_CLOCK_IN);
	64	if (ret < 0) {
	65	printk(KERN_ERR "can't set CPU system clock OMAP_MCBSP_FSR_SRC_FSX\n");
	66	return ret;
	67	}
	68
	69	return 0;
	70	}
	71
	72	static struct snd_soc_ops am3517evm_ops = {
	73	.hw_params = am3517evm_hw_params,
	74	};
	75
	76	/* am3517evm machine dapm widgets */
	77	static const struct snd_soc_dapm_widget tlv320aic23_dapm_widgets[] = {
	78	SND_SOC_DAPM_HP("Line Out", NULL),
	79	SND_SOC_DAPM_LINE("Line In", NULL),
	80	SND_SOC_DAPM_MIC("Mic In", NULL),
	81	};
	82
	83	static const struct snd_soc_dapm_route audio_map[] = {
	84	/* Line Out connected to LLOUT, RLOUT */
	85	{"Line Out", NULL, "LOUT"},
	86	{"Line Out", NULL, "ROUT"},
	87
	88	{"LLINEIN", NULL, "Line In"},
	89	{"RLINEIN", NULL, "Line In"},
	90
	91	{"MICIN", NULL, "Mic In"},
	92	};
	93
89e9abe7 AA	94	/* Digital audio interface glue - connects codec <--> CPU */
	95	static struct snd_soc_dai_link am3517evm_dai = {
	96	.name = "TLV320AIC23",
	97	.stream_name = "AIC23",
f0fba2ad LG	98	.cpu_dai_name ="omap-mcbsp-dai.0",
	99	.codec_dai_name = "tlv320aic23-hifi",
	100	.platform_name = "omap-pcm-audio",
ffd6eae2	101	.codec_name = "tlv320aic23-codec.2-001a",
cf9feff2 JN	102	.dai_fmt = SND_SOC_DAIFMT_DSP_B \| SND_SOC_DAIFMT_NB_NF \|
cf9feff2 JN	103	SND_SOC_DAIFMT_CBM_CFM,
89e9abe7 AA	104	.ops = &am3517evm_ops,
	105	};
	106
	107	/* Audio machine driver */
	108	static struct snd_soc_card snd_soc_am3517evm = {
	109	.name = "am3517evm",
89e9abe7 AA	110	.dai_link = &am3517evm_dai,
89e9abe7 AA	111	.num_links = 1,
d2266025 PU	112
	113	.dapm_widgets = tlv320aic23_dapm_widgets,
	114	.num_dapm_widgets = ARRAY_SIZE(tlv320aic23_dapm_widgets),
	115	.dapm_routes = audio_map,
	116	.num_dapm_routes = ARRAY_SIZE(audio_map),
89e9abe7 AA	117	};
89e9abe7 AA	118
89e9abe7 AA	119	static struct platform_device *am3517evm_snd_device;
	120
	121	static int __init am3517evm_soc_init(void)
	122	{
	123	int ret;
	124
ec588ae6	125	if (!machine_is_omap3517evm())
89e9abe7	126	return -ENODEV;
89e9abe7 AA	127	pr_info("OMAP3517 / AM3517 EVM SoC init\n");
	128
	129	am3517evm_snd_device = platform_device_alloc("soc-audio", -1);
	130	if (!am3517evm_snd_device) {
	131	printk(KERN_ERR "Platform device allocation failed\n");
	132	return -ENOMEM;
	133	}
	134
f0fba2ad	135	platform_set_drvdata(am3517evm_snd_device, &snd_soc_am3517evm);
89e9abe7 AA	136
	137	ret = platform_device_add(am3517evm_snd_device);
	138	if (ret)
	139	goto err1;
	140
	141	return 0;
	142
	143	err1:
	144	printk(KERN_ERR "Unable to add platform device\n");
	145	platform_device_put(am3517evm_snd_device);
	146
	147	return ret;
	148	}
	149
	150	static void __exit am3517evm_soc_exit(void)
	151	{
	152	platform_device_unregister(am3517evm_snd_device);
	153	}
	154
	155	module_init(am3517evm_soc_init);
	156	module_exit(am3517evm_soc_exit);
	157
	158	MODULE_AUTHOR("Anuj Aggarwal <anuj.aggarwal@ti.com>");
	159	MODULE_DESCRIPTION("ALSA SoC OMAP3517 / AM3517 EVM");
	160	MODULE_LICENSE("GPL v2");