sound/soc/s3c24xx/s3c64xx-i2s.c - kernel/msm-4.9 - Gitiles

 /* sound/soc/s3c24xx/s3c64xx-i2s.c
  *
  * ALSA SoC Audio Layer - S3C64XX I2S driver
  *
  * Copyright 2008 Openmoko, Inc.
  * Copyright 2008 Simtec Electronics
  *      Ben Dooks <ben@simtec.co.uk>
  *      http://armlinux.simtec.co.uk/
  *
  * 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/init.h>
 #include <linux/module.h>
 #include <linux/device.h>
 #include <linux/clk.h>
 #include <linux/gpio.h>
 #include <linux/io.h>

 #include <sound/soc.h>

 #include <plat/regs-s3c2412-iis.h>
 #include <plat/gpio-bank-d.h>
 #include <plat/gpio-bank-e.h>
 #include <plat/gpio-cfg.h>

 #include <mach/map.h>
 #include <mach/dma.h>

 #include "s3c-dma.h"
 #include "s3c64xx-i2s.h"

 /* The value should be set to maximum of the total number
  * of I2Sv3 controllers that any supported SoC has.
  */
 #define MAX_I2SV3	2

 static struct s3c2410_dma_client s3c64xx_dma_client_out = {
 	.name		= "I2S PCM Stereo out"
 };

 static struct s3c2410_dma_client s3c64xx_dma_client_in = {
 	.name		= "I2S PCM Stereo in"
 };

 static struct s3c_dma_params s3c64xx_i2s_pcm_stereo_out[MAX_I2SV3];
 static struct s3c_dma_params s3c64xx_i2s_pcm_stereo_in[MAX_I2SV3];
 static struct s3c_i2sv2_info s3c64xx_i2s[MAX_I2SV3];

 struct snd_soc_dai s3c64xx_i2s_dai[MAX_I2SV3];
 EXPORT_SYMBOL_GPL(s3c64xx_i2s_dai);

 static inline struct s3c_i2sv2_info *to_info(struct snd_soc_dai *cpu_dai)
 {
 	return cpu_dai->private_data;
 }

 static int s3c64xx_i2s_set_sysclk(struct snd_soc_dai *cpu_dai,
 				  int clk_id, unsigned int freq, int dir)
 {
 	struct s3c_i2sv2_info *i2s = to_info(cpu_dai);
 	u32 iismod = readl(i2s->regs + S3C2412_IISMOD);

 	switch (clk_id) {
 	case S3C64XX_CLKSRC_PCLK:
 		iismod &= ~S3C64XX_IISMOD_IMS_SYSMUX;
 		break;

 	case S3C64XX_CLKSRC_MUX:
 		iismod |= S3C64XX_IISMOD_IMS_SYSMUX;
 		break;

 	case S3C64XX_CLKSRC_CDCLK:
 		switch (dir) {
 		case SND_SOC_CLOCK_IN:
 			iismod |= S3C64XX_IISMOD_CDCLKCON;
 			break;
 		case SND_SOC_CLOCK_OUT:
 			iismod &= ~S3C64XX_IISMOD_CDCLKCON;
 			break;
 		default:
 			return -EINVAL;
 		}
 		break;

 	default:
 		return -EINVAL;
 	}

 	writel(iismod, i2s->regs + S3C2412_IISMOD);

 	return 0;
 }

 struct clk *s3c64xx_i2s_get_clock(struct snd_soc_dai *dai)
 {
 	struct s3c_i2sv2_info *i2s = to_info(dai);
 	u32 iismod = readl(i2s->regs + S3C2412_IISMOD);

 	if (iismod & S3C64XX_IISMOD_IMS_SYSMUX)
 		return i2s->iis_cclk;
 	else
 		return i2s->iis_pclk;
 }
 EXPORT_SYMBOL_GPL(s3c64xx_i2s_get_clock);

 static int s3c64xx_i2s_probe(struct platform_device *pdev,
 			     struct snd_soc_dai *dai)
 {
 	/* configure GPIO for i2s port */
 	switch (dai->id) {
 	case 0:
 		s3c_gpio_cfgpin(S3C64XX_GPD(0), S3C64XX_GPD0_I2S0_CLK);
 		s3c_gpio_cfgpin(S3C64XX_GPD(1), S3C64XX_GPD1_I2S0_CDCLK);
 		s3c_gpio_cfgpin(S3C64XX_GPD(2), S3C64XX_GPD2_I2S0_LRCLK);
 		s3c_gpio_cfgpin(S3C64XX_GPD(3), S3C64XX_GPD3_I2S0_DI);
 		s3c_gpio_cfgpin(S3C64XX_GPD(4), S3C64XX_GPD4_I2S0_D0);
 		break;
 	case 1:
 		s3c_gpio_cfgpin(S3C64XX_GPE(0), S3C64XX_GPE0_I2S1_CLK);
 		s3c_gpio_cfgpin(S3C64XX_GPE(1), S3C64XX_GPE1_I2S1_CDCLK);
 		s3c_gpio_cfgpin(S3C64XX_GPE(2), S3C64XX_GPE2_I2S1_LRCLK);
 		s3c_gpio_cfgpin(S3C64XX_GPE(3), S3C64XX_GPE3_I2S1_DI);
 		s3c_gpio_cfgpin(S3C64XX_GPE(4), S3C64XX_GPE4_I2S1_D0);
 	}

 	return 0;
 }


 #define S3C64XX_I2S_RATES \
 	(SNDRV_PCM_RATE_8000 | SNDRV_PCM_RATE_11025 | SNDRV_PCM_RATE_16000 | \
 	SNDRV_PCM_RATE_22050 | SNDRV_PCM_RATE_32000 | SNDRV_PCM_RATE_44100 | \
 	SNDRV_PCM_RATE_48000 | SNDRV_PCM_RATE_88200 | SNDRV_PCM_RATE_96000)

 #define S3C64XX_I2S_FMTS \
 	(SNDRV_PCM_FMTBIT_S8 | SNDRV_PCM_FMTBIT_S16_LE |\
 	 SNDRV_PCM_FMTBIT_S24_LE)

 static struct snd_soc_dai_ops s3c64xx_i2s_dai_ops = {
 	.set_sysclk	= s3c64xx_i2s_set_sysclk,
 };

 static __devinit int s3c64xx_iis_dev_probe(struct platform_device *pdev)
 {
 	struct s3c_i2sv2_info *i2s;
 	struct snd_soc_dai *dai;
 	int ret;

 	if (pdev->id >= MAX_I2SV3) {
 		dev_err(&pdev->dev, "id %d out of range\n", pdev->id);
 		return -EINVAL;
 	}

 	i2s = &s3c64xx_i2s[pdev->id];
 	dai = &s3c64xx_i2s_dai[pdev->id];
 	dai->dev = &pdev->dev;
 	dai->name = "s3c64xx-i2s";
 	dai->id = pdev->id;
 	dai->symmetric_rates = 1;
 	dai->playback.channels_min = 2;
 	dai->playback.channels_max = 2;
 	dai->playback.rates = S3C64XX_I2S_RATES;
 	dai->playback.formats = S3C64XX_I2S_FMTS;
 	dai->capture.channels_min = 2;
 	dai->capture.channels_max = 2;
 	dai->capture.rates = S3C64XX_I2S_RATES;
 	dai->capture.formats = S3C64XX_I2S_FMTS;
 	dai->probe = s3c64xx_i2s_probe;
 	dai->ops = &s3c64xx_i2s_dai_ops;

 	i2s->dma_capture = &s3c64xx_i2s_pcm_stereo_in[pdev->id];
 	i2s->dma_playback = &s3c64xx_i2s_pcm_stereo_out[pdev->id];

 	if (pdev->id == 0) {
 		i2s->dma_capture->channel = DMACH_I2S0_IN;
 		i2s->dma_capture->dma_addr = S3C64XX_PA_IIS0 + S3C2412_IISRXD;
 		i2s->dma_playback->channel = DMACH_I2S0_OUT;
 		i2s->dma_playback->dma_addr = S3C64XX_PA_IIS0 + S3C2412_IISTXD;
 	} else {
 		i2s->dma_capture->channel = DMACH_I2S1_IN;
 		i2s->dma_capture->dma_addr = S3C64XX_PA_IIS1 + S3C2412_IISRXD;
 		i2s->dma_playback->channel = DMACH_I2S1_OUT;
 		i2s->dma_playback->dma_addr = S3C64XX_PA_IIS1 + S3C2412_IISTXD;
 	}

 	i2s->dma_capture->client = &s3c64xx_dma_client_in;
 	i2s->dma_capture->dma_size = 4;
 	i2s->dma_playback->client = &s3c64xx_dma_client_out;
 	i2s->dma_playback->dma_size = 4;

 	i2s->iis_cclk = clk_get(&pdev->dev, "audio-bus");
 	if (IS_ERR(i2s->iis_cclk)) {
 		dev_err(&pdev->dev, "failed to get audio-bus\n");
 		ret = PTR_ERR(i2s->iis_cclk);
 		goto err;
 	}

 	clk_enable(i2s->iis_cclk);

 	ret = s3c_i2sv2_probe(pdev, dai, i2s, 0);
 	if (ret)
 		goto err_clk;

 	ret = s3c_i2sv2_register_dai(dai);
 	if (ret != 0)
 		goto err_i2sv2;

 	return 0;

 err_i2sv2:
 	/* Not implemented for I2Sv2 core yet */
 err_clk:
 	clk_put(i2s->iis_cclk);
 err:
 	return ret;
 }

 static __devexit int s3c64xx_iis_dev_remove(struct platform_device *pdev)
 {
 	dev_err(&pdev->dev, "Device removal not yet supported\n");
 	return 0;
 }

 static struct platform_driver s3c64xx_iis_driver = {
 	.probe  = s3c64xx_iis_dev_probe,
 	.remove = s3c64xx_iis_dev_remove,
 	.driver = {
 		.name = "s3c64xx-iis",
 		.owner = THIS_MODULE,
 	},
 };

 static int __init s3c64xx_i2s_init(void)
 {
 	return platform_driver_register(&s3c64xx_iis_driver);
 }
 module_init(s3c64xx_i2s_init);

 static void __exit s3c64xx_i2s_exit(void)
 {
 	platform_driver_unregister(&s3c64xx_iis_driver);
 }
 module_exit(s3c64xx_i2s_exit);

 /* Module information */
 MODULE_AUTHOR("Ben Dooks, <ben@simtec.co.uk>");
 MODULE_DESCRIPTION("S3C64XX I2S SoC Interface");
 MODULE_LICENSE("GPL");
	/* sound/soc/s3c24xx/s3c64xx-i2s.c
	*
	* ALSA SoC Audio Layer - S3C64XX I2S driver
	*
	* Copyright 2008 Openmoko, Inc.
	* Copyright 2008 Simtec Electronics
	* Ben Dooks <ben@simtec.co.uk>
	* http://armlinux.simtec.co.uk/
	*
	* 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/init.h>
	#include <linux/module.h>
	#include <linux/device.h>
	#include <linux/clk.h>
	#include <linux/gpio.h>
	#include <linux/io.h>

	#include <sound/soc.h>

	#include <plat/regs-s3c2412-iis.h>
	#include <plat/gpio-bank-d.h>
	#include <plat/gpio-bank-e.h>
	#include <plat/gpio-cfg.h>

	#include <mach/map.h>
	#include <mach/dma.h>

	#include "s3c-dma.h"
	#include "s3c64xx-i2s.h"

	/* The value should be set to maximum of the total number
	* of I2Sv3 controllers that any supported SoC has.
	*/
	#define MAX_I2SV3 2

	static struct s3c2410_dma_client s3c64xx_dma_client_out = {
	.name = "I2S PCM Stereo out"
	};

	static struct s3c2410_dma_client s3c64xx_dma_client_in = {
	.name = "I2S PCM Stereo in"
	};

	static struct s3c_dma_params s3c64xx_i2s_pcm_stereo_out[MAX_I2SV3];
	static struct s3c_dma_params s3c64xx_i2s_pcm_stereo_in[MAX_I2SV3];
	static struct s3c_i2sv2_info s3c64xx_i2s[MAX_I2SV3];

	struct snd_soc_dai s3c64xx_i2s_dai[MAX_I2SV3];
	EXPORT_SYMBOL_GPL(s3c64xx_i2s_dai);

	static inline struct s3c_i2sv2_info to_info(struct snd_soc_dai cpu_dai)
	{
	return cpu_dai->private_data;
	}

	static int s3c64xx_i2s_set_sysclk(struct snd_soc_dai *cpu_dai,
	int clk_id, unsigned int freq, int dir)
	{
	struct s3c_i2sv2_info *i2s = to_info(cpu_dai);
	u32 iismod = readl(i2s->regs + S3C2412_IISMOD);

	switch (clk_id) {
	case S3C64XX_CLKSRC_PCLK:
	iismod &= ~S3C64XX_IISMOD_IMS_SYSMUX;
	break;

	case S3C64XX_CLKSRC_MUX:
	iismod \|= S3C64XX_IISMOD_IMS_SYSMUX;
	break;

	case S3C64XX_CLKSRC_CDCLK:
	switch (dir) {
	case SND_SOC_CLOCK_IN:
	iismod \|= S3C64XX_IISMOD_CDCLKCON;
	break;
	case SND_SOC_CLOCK_OUT:
	iismod &= ~S3C64XX_IISMOD_CDCLKCON;
	break;
	default:
	return -EINVAL;
	}
	break;

	default:
	return -EINVAL;
	}

	writel(iismod, i2s->regs + S3C2412_IISMOD);

	return 0;
	}

	struct clk s3c64xx_i2s_get_clock(struct snd_soc_dai dai)
	{
	struct s3c_i2sv2_info *i2s = to_info(dai);
	u32 iismod = readl(i2s->regs + S3C2412_IISMOD);

	if (iismod & S3C64XX_IISMOD_IMS_SYSMUX)
	return i2s->iis_cclk;
	else
	return i2s->iis_pclk;
	}
	EXPORT_SYMBOL_GPL(s3c64xx_i2s_get_clock);

	static int s3c64xx_i2s_probe(struct platform_device *pdev,
	struct snd_soc_dai *dai)
	{
	/* configure GPIO for i2s port */
	switch (dai->id) {
	case 0:
	s3c_gpio_cfgpin(S3C64XX_GPD(0), S3C64XX_GPD0_I2S0_CLK);
	s3c_gpio_cfgpin(S3C64XX_GPD(1), S3C64XX_GPD1_I2S0_CDCLK);
	s3c_gpio_cfgpin(S3C64XX_GPD(2), S3C64XX_GPD2_I2S0_LRCLK);
	s3c_gpio_cfgpin(S3C64XX_GPD(3), S3C64XX_GPD3_I2S0_DI);
	s3c_gpio_cfgpin(S3C64XX_GPD(4), S3C64XX_GPD4_I2S0_D0);
	break;
	case 1:
	s3c_gpio_cfgpin(S3C64XX_GPE(0), S3C64XX_GPE0_I2S1_CLK);
	s3c_gpio_cfgpin(S3C64XX_GPE(1), S3C64XX_GPE1_I2S1_CDCLK);
	s3c_gpio_cfgpin(S3C64XX_GPE(2), S3C64XX_GPE2_I2S1_LRCLK);
	s3c_gpio_cfgpin(S3C64XX_GPE(3), S3C64XX_GPE3_I2S1_DI);
	s3c_gpio_cfgpin(S3C64XX_GPE(4), S3C64XX_GPE4_I2S1_D0);
	}

	return 0;
	}


	#define S3C64XX_I2S_RATES \
	(SNDRV_PCM_RATE_8000 \| SNDRV_PCM_RATE_11025 \| SNDRV_PCM_RATE_16000 \| \
	SNDRV_PCM_RATE_22050 \| SNDRV_PCM_RATE_32000 \| SNDRV_PCM_RATE_44100 \| \
	SNDRV_PCM_RATE_48000 \| SNDRV_PCM_RATE_88200 \| SNDRV_PCM_RATE_96000)

	#define S3C64XX_I2S_FMTS \
	(SNDRV_PCM_FMTBIT_S8 \| SNDRV_PCM_FMTBIT_S16_LE \|\
	SNDRV_PCM_FMTBIT_S24_LE)

	static struct snd_soc_dai_ops s3c64xx_i2s_dai_ops = {
	.set_sysclk = s3c64xx_i2s_set_sysclk,
	};

	static __devinit int s3c64xx_iis_dev_probe(struct platform_device *pdev)
	{
	struct s3c_i2sv2_info *i2s;
	struct snd_soc_dai *dai;
	int ret;

	if (pdev->id >= MAX_I2SV3) {
	dev_err(&pdev->dev, "id %d out of range\n", pdev->id);
	return -EINVAL;
	}

	i2s = &s3c64xx_i2s[pdev->id];
	dai = &s3c64xx_i2s_dai[pdev->id];
	dai->dev = &pdev->dev;
	dai->name = "s3c64xx-i2s";
	dai->id = pdev->id;
	dai->symmetric_rates = 1;
	dai->playback.channels_min = 2;
	dai->playback.channels_max = 2;
	dai->playback.rates = S3C64XX_I2S_RATES;
	dai->playback.formats = S3C64XX_I2S_FMTS;
	dai->capture.channels_min = 2;
	dai->capture.channels_max = 2;
	dai->capture.rates = S3C64XX_I2S_RATES;
	dai->capture.formats = S3C64XX_I2S_FMTS;
	dai->probe = s3c64xx_i2s_probe;
	dai->ops = &s3c64xx_i2s_dai_ops;

	i2s->dma_capture = &s3c64xx_i2s_pcm_stereo_in[pdev->id];
	i2s->dma_playback = &s3c64xx_i2s_pcm_stereo_out[pdev->id];

	if (pdev->id == 0) {
	i2s->dma_capture->channel = DMACH_I2S0_IN;
	i2s->dma_capture->dma_addr = S3C64XX_PA_IIS0 + S3C2412_IISRXD;
	i2s->dma_playback->channel = DMACH_I2S0_OUT;
	i2s->dma_playback->dma_addr = S3C64XX_PA_IIS0 + S3C2412_IISTXD;
	} else {
	i2s->dma_capture->channel = DMACH_I2S1_IN;
	i2s->dma_capture->dma_addr = S3C64XX_PA_IIS1 + S3C2412_IISRXD;
	i2s->dma_playback->channel = DMACH_I2S1_OUT;
	i2s->dma_playback->dma_addr = S3C64XX_PA_IIS1 + S3C2412_IISTXD;
	}

	i2s->dma_capture->client = &s3c64xx_dma_client_in;
	i2s->dma_capture->dma_size = 4;
	i2s->dma_playback->client = &s3c64xx_dma_client_out;
	i2s->dma_playback->dma_size = 4;

	i2s->iis_cclk = clk_get(&pdev->dev, "audio-bus");
	if (IS_ERR(i2s->iis_cclk)) {
	dev_err(&pdev->dev, "failed to get audio-bus\n");
	ret = PTR_ERR(i2s->iis_cclk);
	goto err;
	}

	clk_enable(i2s->iis_cclk);

	ret = s3c_i2sv2_probe(pdev, dai, i2s, 0);
	if (ret)
	goto err_clk;

	ret = s3c_i2sv2_register_dai(dai);
	if (ret != 0)
	goto err_i2sv2;

	return 0;

	err_i2sv2:
	/* Not implemented for I2Sv2 core yet */
	err_clk:
	clk_put(i2s->iis_cclk);
	err:
	return ret;
	}

	static __devexit int s3c64xx_iis_dev_remove(struct platform_device *pdev)
	{
	dev_err(&pdev->dev, "Device removal not yet supported\n");
	return 0;
	}

	static struct platform_driver s3c64xx_iis_driver = {
	.probe = s3c64xx_iis_dev_probe,
	.remove = s3c64xx_iis_dev_remove,
	.driver = {
	.name = "s3c64xx-iis",
	.owner = THIS_MODULE,
	},
	};

	static int __init s3c64xx_i2s_init(void)
	{
	return platform_driver_register(&s3c64xx_iis_driver);
	}
	module_init(s3c64xx_i2s_init);

	static void __exit s3c64xx_i2s_exit(void)
	{
	platform_driver_unregister(&s3c64xx_iis_driver);
	}
	module_exit(s3c64xx_i2s_exit);

	/* Module information */
	MODULE_AUTHOR("Ben Dooks, <ben@simtec.co.uk>");
	MODULE_DESCRIPTION("S3C64XX I2S SoC Interface");
	MODULE_LICENSE("GPL");