sound/soc/pxa/raumfeld.c - linux/kernel/git/tj/wq - Git at Google

 /*
  * raumfeld_audio.c  --  SoC audio for Raumfeld audio devices
  *
  * Copyright (c) 2009 Daniel Mack <daniel@caiaq.de>
  *
  * based on code from:
  *
  *    Wolfson Microelectronics PLC.
  *    Openedhand Ltd.
  *    Liam Girdwood <lrg@slimlogic.co.uk>
  *    Richard Purdie <richard@openedhand.com>
  *
  * 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;  either version 2 of the  License, or (at your
  * option) any later version.
  */

 #include <linux/module.h>
 #include <linux/i2c.h>
 #include <linux/delay.h>
 #include <linux/gpio.h>
 #include <sound/pcm.h>
 #include <sound/soc.h>
 #include <sound/soc-dapm.h>

 #include <asm/mach-types.h>

 #include "../codecs/cs4270.h"
 #include "../codecs/ak4104.h"
 #include "pxa2xx-pcm.h"
 #include "pxa-ssp.h"

 #define GPIO_SPDIF_RESET	(38)
 #define GPIO_MCLK_RESET		(111)
 #define GPIO_CODEC_RESET	(120)

 static struct i2c_client *max9486_client;
 static struct i2c_board_info max9486_hwmon_info = {
 	I2C_BOARD_INFO("max9485", 0x63),
 };

 #define MAX9485_MCLK_FREQ_112896 0x22
 #define MAX9485_MCLK_FREQ_122880 0x23
 #define MAX9485_MCLK_FREQ_225792 0x32
 #define MAX9485_MCLK_FREQ_245760 0x33

 static void set_max9485_clk(char clk)
 {
 	i2c_master_send(max9486_client, &clk, 1);
 }

 static void raumfeld_enable_audio(bool en)
 {
 	if (en) {
 		gpio_set_value(GPIO_MCLK_RESET, 1);

 		/* wait some time to let the clocks become stable */
 		msleep(100);

 		gpio_set_value(GPIO_SPDIF_RESET, 1);
 		gpio_set_value(GPIO_CODEC_RESET, 1);
 	} else {
 		gpio_set_value(GPIO_MCLK_RESET, 0);
 		gpio_set_value(GPIO_SPDIF_RESET, 0);
 		gpio_set_value(GPIO_CODEC_RESET, 0);
 	}
 }

 /* CS4270 */
 static int raumfeld_cs4270_startup(struct snd_pcm_substream *substream)
 {
 	struct snd_soc_pcm_runtime *rtd = substream->private_data;
 	struct snd_soc_dai *codec_dai = rtd->dai->codec_dai;

 	/* set freq to 0 to enable all possible codec sample rates */
 	return snd_soc_dai_set_sysclk(codec_dai, 0, 0, 0);
 }

 static void raumfeld_cs4270_shutdown(struct snd_pcm_substream *substream)
 {
 	struct snd_soc_pcm_runtime *rtd = substream->private_data;
 	struct snd_soc_dai *codec_dai = rtd->dai->codec_dai;

 	/* set freq to 0 to enable all possible codec sample rates */
 	snd_soc_dai_set_sysclk(codec_dai, 0, 0, 0);
 }

 static int raumfeld_cs4270_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;
 	unsigned int fmt, clk = 0;
 	int ret = 0;

 	switch (params_rate(params)) {
 	case 44100:
 		set_max9485_clk(MAX9485_MCLK_FREQ_112896);
 		clk = 11289600;
 		break;
 	case 48000:
 		set_max9485_clk(MAX9485_MCLK_FREQ_122880);
 		clk = 12288000;
 		break;
 	case 88200:
 		set_max9485_clk(MAX9485_MCLK_FREQ_225792);
 		clk = 22579200;
 		break;
 	case 96000:
 		set_max9485_clk(MAX9485_MCLK_FREQ_245760);
 		clk = 24576000;
 		break;
 	default:
 		return -EINVAL;
 	}

 	fmt = SND_SOC_DAIFMT_I2S |
 	      SND_SOC_DAIFMT_NB_NF |
 	      SND_SOC_DAIFMT_CBS_CFS;

 	/* setup the CODEC DAI */
 	ret = snd_soc_dai_set_fmt(codec_dai, fmt);
 	if (ret < 0)
 		return ret;

 	ret = snd_soc_dai_set_sysclk(codec_dai, 0, clk, 0);
 	if (ret < 0)
 		return ret;

 	/* setup the CPU DAI */
 	ret = snd_soc_dai_set_pll(cpu_dai, 0, 0, 0, clk);
 	if (ret < 0)
 		return ret;

 	ret = snd_soc_dai_set_fmt(cpu_dai, fmt);
 	if (ret < 0)
 		return ret;

 	ret = snd_soc_dai_set_clkdiv(cpu_dai, PXA_SSP_DIV_SCR, 4);
 	if (ret < 0)
 		return ret;

 	ret = snd_soc_dai_set_sysclk(cpu_dai, PXA_SSP_CLK_EXT, clk, 1);
 	if (ret < 0)
 		return ret;

 	return 0;
 }

 static struct snd_soc_ops raumfeld_cs4270_ops = {
 	.startup = raumfeld_cs4270_startup,
 	.shutdown = raumfeld_cs4270_shutdown,
 	.hw_params = raumfeld_cs4270_hw_params,
 };

 static int raumfeld_line_suspend(struct platform_device *pdev, pm_message_t state)
 {
 	raumfeld_enable_audio(false);
 	return 0;
 }

 static int raumfeld_line_resume(struct platform_device *pdev)
 {
 	raumfeld_enable_audio(true);
 	return 0;
 }

 static struct snd_soc_dai_link raumfeld_line_dai = {
 	.name		= "CS4270",
 	.stream_name	= "CS4270",
 	.cpu_dai	= &pxa_ssp_dai[PXA_DAI_SSP1],
 	.codec_dai	= &cs4270_dai,
 	.ops		= &raumfeld_cs4270_ops,
 };

 static struct snd_soc_card snd_soc_line_raumfeld = {
 	.name		= "Raumfeld analog",
 	.platform	= &pxa2xx_soc_platform,
 	.dai_link	= &raumfeld_line_dai,
 	.suspend_post	= raumfeld_line_suspend,
 	.resume_pre	= raumfeld_line_resume,
 	.num_links	= 1,
 };


 /* AK4104 */

 static int raumfeld_ak4104_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 fmt, ret = 0, clk = 0;

 	switch (params_rate(params)) {
 	case 44100:
 		set_max9485_clk(MAX9485_MCLK_FREQ_112896);
 		clk = 11289600;
 		break;
 	case 48000:
 		set_max9485_clk(MAX9485_MCLK_FREQ_122880);
 		clk = 12288000;
 		break;
 	case 88200:
 		set_max9485_clk(MAX9485_MCLK_FREQ_225792);
 		clk = 22579200;
 		break;
 	case 96000:
 		set_max9485_clk(MAX9485_MCLK_FREQ_245760);
 		clk = 24576000;
 		break;
 	default:
 		return -EINVAL;
 	}

 	fmt = SND_SOC_DAIFMT_I2S | SND_SOC_DAIFMT_NB_NF;

 	/* setup the CODEC DAI */
 	ret = snd_soc_dai_set_fmt(codec_dai, fmt | SND_SOC_DAIFMT_CBS_CFS);
 	if (ret < 0)
 		return ret;

 	/* setup the CPU DAI */
 	ret = snd_soc_dai_set_pll(cpu_dai, 0, 0, 0, clk);
 	if (ret < 0)
 		return ret;

 	ret = snd_soc_dai_set_fmt(cpu_dai, fmt | SND_SOC_DAIFMT_CBS_CFS);
 	if (ret < 0)
 		return ret;

 	ret = snd_soc_dai_set_clkdiv(cpu_dai, PXA_SSP_DIV_SCR, 4);
 	if (ret < 0)
 		return ret;

 	ret = snd_soc_dai_set_sysclk(cpu_dai, PXA_SSP_CLK_EXT, clk, 1);
 	if (ret < 0)
 		return ret;

 	return 0;
 }

 static struct snd_soc_ops raumfeld_ak4104_ops = {
 	.hw_params = raumfeld_ak4104_hw_params,
 };

 static struct snd_soc_dai_link raumfeld_spdif_dai = {
 	.name		= "ak4104",
 	.stream_name	= "Playback",
 	.cpu_dai	= &pxa_ssp_dai[PXA_DAI_SSP2],
 	.codec_dai	= &ak4104_dai,
 	.ops		= &raumfeld_ak4104_ops,
 };

 static struct snd_soc_card snd_soc_spdif_raumfeld = {
 	.name		= "Raumfeld S/PDIF",
 	.platform	= &pxa2xx_soc_platform,
 	.dai_link	= &raumfeld_spdif_dai,
 	.num_links	= 1
 };

 /* raumfeld_audio audio subsystem */
 static struct snd_soc_device raumfeld_line_devdata = {
 	.card = &snd_soc_line_raumfeld,
 	.codec_dev = &soc_codec_device_cs4270,
 };

 static struct snd_soc_device raumfeld_spdif_devdata = {
 	.card = &snd_soc_spdif_raumfeld,
 	.codec_dev = &soc_codec_device_ak4104,
 };

 static struct platform_device *raumfeld_audio_line_device;
 static struct platform_device *raumfeld_audio_spdif_device;

 static int __init raumfeld_audio_init(void)
 {
 	int ret;

 	if (!machine_is_raumfeld_speaker() &&
 	    !machine_is_raumfeld_connector())
 		return 0;

 	max9486_client = i2c_new_device(i2c_get_adapter(0),
 					&max9486_hwmon_info);

 	if (!max9486_client)
 		return -ENOMEM;

 	set_max9485_clk(MAX9485_MCLK_FREQ_122880);

 	/* LINE */
 	raumfeld_audio_line_device = platform_device_alloc("soc-audio", 0);
 	if (!raumfeld_audio_line_device)
 		return -ENOMEM;

 	platform_set_drvdata(raumfeld_audio_line_device,
 			     &raumfeld_line_devdata);
 	raumfeld_line_devdata.dev = &raumfeld_audio_line_device->dev;
 	ret = platform_device_add(raumfeld_audio_line_device);
 	if (ret)
 		platform_device_put(raumfeld_audio_line_device);

 	/* no S/PDIF on Speakers */
 	if (machine_is_raumfeld_speaker())
 		return ret;

 	/* S/PDIF */
 	raumfeld_audio_spdif_device = platform_device_alloc("soc-audio", 1);
 	if (!raumfeld_audio_spdif_device) {
 		platform_device_put(raumfeld_audio_line_device);
 		return -ENOMEM;
 	}

 	platform_set_drvdata(raumfeld_audio_spdif_device,
 			     &raumfeld_spdif_devdata);
 	raumfeld_spdif_devdata.dev = &raumfeld_audio_spdif_device->dev;
 	ret = platform_device_add(raumfeld_audio_spdif_device);
 	if (ret) {
 		platform_device_put(raumfeld_audio_line_device);
 		platform_device_put(raumfeld_audio_spdif_device);
 	}

 	raumfeld_enable_audio(true);

 	return ret;
 }

 static void __exit raumfeld_audio_exit(void)
 {
 	raumfeld_enable_audio(false);

 	platform_device_unregister(raumfeld_audio_line_device);

 	if (machine_is_raumfeld_connector())
 		platform_device_unregister(raumfeld_audio_spdif_device);

 	i2c_unregister_device(max9486_client);

 	gpio_free(GPIO_MCLK_RESET);
 	gpio_free(GPIO_CODEC_RESET);
 	gpio_free(GPIO_SPDIF_RESET);
 }

 module_init(raumfeld_audio_init);
 module_exit(raumfeld_audio_exit);

 /* Module information */
 MODULE_AUTHOR("Daniel Mack <daniel@caiaq.de>");
 MODULE_DESCRIPTION("Raumfeld audio SoC");
 MODULE_LICENSE("GPL");
	/*
	* raumfeld_audio.c -- SoC audio for Raumfeld audio devices
	*
	* Copyright (c) 2009 Daniel Mack <daniel@caiaq.de>
	*
	* based on code from:
	*
	* Wolfson Microelectronics PLC.
	* Openedhand Ltd.
	* Liam Girdwood <lrg@slimlogic.co.uk>
	* Richard Purdie <richard@openedhand.com>
	*
	* 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; either version 2 of the License, or (at your
	* option) any later version.
	*/

	#include <linux/module.h>
	#include <linux/i2c.h>
	#include <linux/delay.h>
	#include <linux/gpio.h>
	#include <sound/pcm.h>
	#include <sound/soc.h>
	#include <sound/soc-dapm.h>

	#include <asm/mach-types.h>

	#include "../codecs/cs4270.h"
	#include "../codecs/ak4104.h"
	#include "pxa2xx-pcm.h"
	#include "pxa-ssp.h"

	#define GPIO_SPDIF_RESET (38)
	#define GPIO_MCLK_RESET (111)
	#define GPIO_CODEC_RESET (120)

	static struct i2c_client *max9486_client;
	static struct i2c_board_info max9486_hwmon_info = {
	I2C_BOARD_INFO("max9485", 0x63),
	};

	#define MAX9485_MCLK_FREQ_112896 0x22
	#define MAX9485_MCLK_FREQ_122880 0x23
	#define MAX9485_MCLK_FREQ_225792 0x32
	#define MAX9485_MCLK_FREQ_245760 0x33

	static void set_max9485_clk(char clk)
	{
	i2c_master_send(max9486_client, &clk, 1);
	}

	static void raumfeld_enable_audio(bool en)
	{
	if (en) {
	gpio_set_value(GPIO_MCLK_RESET, 1);

	/* wait some time to let the clocks become stable */
	msleep(100);

	gpio_set_value(GPIO_SPDIF_RESET, 1);
	gpio_set_value(GPIO_CODEC_RESET, 1);
	} else {
	gpio_set_value(GPIO_MCLK_RESET, 0);
	gpio_set_value(GPIO_SPDIF_RESET, 0);
	gpio_set_value(GPIO_CODEC_RESET, 0);
	}
	}

	/* CS4270 */
	static int raumfeld_cs4270_startup(struct snd_pcm_substream *substream)
	{
	struct snd_soc_pcm_runtime *rtd = substream->private_data;
	struct snd_soc_dai *codec_dai = rtd->dai->codec_dai;

	/* set freq to 0 to enable all possible codec sample rates */
	return snd_soc_dai_set_sysclk(codec_dai, 0, 0, 0);
	}

	static void raumfeld_cs4270_shutdown(struct snd_pcm_substream *substream)
	{
	struct snd_soc_pcm_runtime *rtd = substream->private_data;
	struct snd_soc_dai *codec_dai = rtd->dai->codec_dai;

	/* set freq to 0 to enable all possible codec sample rates */
	snd_soc_dai_set_sysclk(codec_dai, 0, 0, 0);
	}

	static int raumfeld_cs4270_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;
	unsigned int fmt, clk = 0;
	int ret = 0;

	switch (params_rate(params)) {
	case 44100:
	set_max9485_clk(MAX9485_MCLK_FREQ_112896);
	clk = 11289600;
	break;
	case 48000:
	set_max9485_clk(MAX9485_MCLK_FREQ_122880);
	clk = 12288000;
	break;
	case 88200:
	set_max9485_clk(MAX9485_MCLK_FREQ_225792);
	clk = 22579200;
	break;
	case 96000:
	set_max9485_clk(MAX9485_MCLK_FREQ_245760);
	clk = 24576000;
	break;
	default:
	return -EINVAL;
	}

	fmt = SND_SOC_DAIFMT_I2S \|
	SND_SOC_DAIFMT_NB_NF \|
	SND_SOC_DAIFMT_CBS_CFS;

	/* setup the CODEC DAI */
	ret = snd_soc_dai_set_fmt(codec_dai, fmt);
	if (ret < 0)
	return ret;

	ret = snd_soc_dai_set_sysclk(codec_dai, 0, clk, 0);
	if (ret < 0)
	return ret;

	/* setup the CPU DAI */
	ret = snd_soc_dai_set_pll(cpu_dai, 0, 0, 0, clk);
	if (ret < 0)
	return ret;

	ret = snd_soc_dai_set_fmt(cpu_dai, fmt);
	if (ret < 0)
	return ret;

	ret = snd_soc_dai_set_clkdiv(cpu_dai, PXA_SSP_DIV_SCR, 4);
	if (ret < 0)
	return ret;

	ret = snd_soc_dai_set_sysclk(cpu_dai, PXA_SSP_CLK_EXT, clk, 1);
	if (ret < 0)
	return ret;

	return 0;
	}

	static struct snd_soc_ops raumfeld_cs4270_ops = {
	.startup = raumfeld_cs4270_startup,
	.shutdown = raumfeld_cs4270_shutdown,
	.hw_params = raumfeld_cs4270_hw_params,
	};

	static int raumfeld_line_suspend(struct platform_device *pdev, pm_message_t state)
	{
	raumfeld_enable_audio(false);
	return 0;
	}

	static int raumfeld_line_resume(struct platform_device *pdev)
	{
	raumfeld_enable_audio(true);
	return 0;
	}

	static struct snd_soc_dai_link raumfeld_line_dai = {
	.name = "CS4270",
	.stream_name = "CS4270",
	.cpu_dai = &pxa_ssp_dai[PXA_DAI_SSP1],
	.codec_dai = &cs4270_dai,
	.ops = &raumfeld_cs4270_ops,
	};

	static struct snd_soc_card snd_soc_line_raumfeld = {
	.name = "Raumfeld analog",
	.platform = &pxa2xx_soc_platform,
	.dai_link = &raumfeld_line_dai,
	.suspend_post = raumfeld_line_suspend,
	.resume_pre = raumfeld_line_resume,
	.num_links = 1,
	};


	/* AK4104 */

	static int raumfeld_ak4104_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 fmt, ret = 0, clk = 0;

	switch (params_rate(params)) {
	case 44100:
	set_max9485_clk(MAX9485_MCLK_FREQ_112896);
	clk = 11289600;
	break;
	case 48000:
	set_max9485_clk(MAX9485_MCLK_FREQ_122880);
	clk = 12288000;
	break;
	case 88200:
	set_max9485_clk(MAX9485_MCLK_FREQ_225792);
	clk = 22579200;
	break;
	case 96000:
	set_max9485_clk(MAX9485_MCLK_FREQ_245760);
	clk = 24576000;
	break;
	default:
	return -EINVAL;
	}

	fmt = SND_SOC_DAIFMT_I2S \| SND_SOC_DAIFMT_NB_NF;

	/* setup the CODEC DAI */
	ret = snd_soc_dai_set_fmt(codec_dai, fmt \| SND_SOC_DAIFMT_CBS_CFS);
	if (ret < 0)
	return ret;

	/* setup the CPU DAI */
	ret = snd_soc_dai_set_pll(cpu_dai, 0, 0, 0, clk);
	if (ret < 0)
	return ret;

	ret = snd_soc_dai_set_fmt(cpu_dai, fmt \| SND_SOC_DAIFMT_CBS_CFS);
	if (ret < 0)
	return ret;

	ret = snd_soc_dai_set_clkdiv(cpu_dai, PXA_SSP_DIV_SCR, 4);
	if (ret < 0)
	return ret;

	ret = snd_soc_dai_set_sysclk(cpu_dai, PXA_SSP_CLK_EXT, clk, 1);
	if (ret < 0)
	return ret;

	return 0;
	}

	static struct snd_soc_ops raumfeld_ak4104_ops = {
	.hw_params = raumfeld_ak4104_hw_params,
	};

	static struct snd_soc_dai_link raumfeld_spdif_dai = {
	.name = "ak4104",
	.stream_name = "Playback",
	.cpu_dai = &pxa_ssp_dai[PXA_DAI_SSP2],
	.codec_dai = &ak4104_dai,
	.ops = &raumfeld_ak4104_ops,
	};

	static struct snd_soc_card snd_soc_spdif_raumfeld = {
	.name = "Raumfeld S/PDIF",
	.platform = &pxa2xx_soc_platform,
	.dai_link = &raumfeld_spdif_dai,
	.num_links = 1
	};

	/* raumfeld_audio audio subsystem */
	static struct snd_soc_device raumfeld_line_devdata = {
	.card = &snd_soc_line_raumfeld,
	.codec_dev = &soc_codec_device_cs4270,
	};

	static struct snd_soc_device raumfeld_spdif_devdata = {
	.card = &snd_soc_spdif_raumfeld,
	.codec_dev = &soc_codec_device_ak4104,
	};

	static struct platform_device *raumfeld_audio_line_device;
	static struct platform_device *raumfeld_audio_spdif_device;

	static int __init raumfeld_audio_init(void)
	{
	int ret;

	if (!machine_is_raumfeld_speaker() &&
	!machine_is_raumfeld_connector())
	return 0;

	max9486_client = i2c_new_device(i2c_get_adapter(0),
	&max9486_hwmon_info);

	if (!max9486_client)
	return -ENOMEM;

	set_max9485_clk(MAX9485_MCLK_FREQ_122880);

	/* LINE */
	raumfeld_audio_line_device = platform_device_alloc("soc-audio", 0);
	if (!raumfeld_audio_line_device)
	return -ENOMEM;

	platform_set_drvdata(raumfeld_audio_line_device,
	&raumfeld_line_devdata);
	raumfeld_line_devdata.dev = &raumfeld_audio_line_device->dev;
	ret = platform_device_add(raumfeld_audio_line_device);
	if (ret)
	platform_device_put(raumfeld_audio_line_device);

	/* no S/PDIF on Speakers */
	if (machine_is_raumfeld_speaker())
	return ret;

	/* S/PDIF */
	raumfeld_audio_spdif_device = platform_device_alloc("soc-audio", 1);
	if (!raumfeld_audio_spdif_device) {
	platform_device_put(raumfeld_audio_line_device);
	return -ENOMEM;
	}

	platform_set_drvdata(raumfeld_audio_spdif_device,
	&raumfeld_spdif_devdata);
	raumfeld_spdif_devdata.dev = &raumfeld_audio_spdif_device->dev;
	ret = platform_device_add(raumfeld_audio_spdif_device);
	if (ret) {
	platform_device_put(raumfeld_audio_line_device);
	platform_device_put(raumfeld_audio_spdif_device);
	}

	raumfeld_enable_audio(true);

	return ret;
	}

	static void __exit raumfeld_audio_exit(void)
	{
	raumfeld_enable_audio(false);

	platform_device_unregister(raumfeld_audio_line_device);

	if (machine_is_raumfeld_connector())
	platform_device_unregister(raumfeld_audio_spdif_device);

	i2c_unregister_device(max9486_client);

	gpio_free(GPIO_MCLK_RESET);
	gpio_free(GPIO_CODEC_RESET);
	gpio_free(GPIO_SPDIF_RESET);
	}

	module_init(raumfeld_audio_init);
	module_exit(raumfeld_audio_exit);

	/* Module information */
	MODULE_AUTHOR("Daniel Mack <daniel@caiaq.de>");
	MODULE_DESCRIPTION("Raumfeld audio SoC");
	MODULE_LICENSE("GPL");