sound/soc/davinci/davinci-evm.c - kernel/msm-4.9 - Gitiles

 /*
  * 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");
	/*
	* 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");