sound/soc/blackfin/bf5xx-ad73311.c - maze/linux - Git at Google

 /*
  * File:         sound/soc/blackfin/bf5xx-ad73311.c
  * Author:       Cliff Cai <Cliff.Cai@analog.com>
  *
  * Created:      Thur Sep 25 2008
  * Description:  Board driver for ad73311 sound chip
  *
  * Modified:
  *               Copyright 2008 Analog Devices Inc.
  *
  * Bugs:         Enter bugs at http://blackfin.uclinux.org/
  *
  * 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.
  *
  * This program is distributed in the hope that it will be useful,
  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  * GNU General Public License for more details.
  *
  * You should have received a copy of the GNU General Public License
  * along with this program; if not, see the file COPYING, or write
  * to the Free Software Foundation, Inc.,
  * 51 Franklin St, Fifth Floor, Boston, MA  02110-1301  USA
  */

 #include <linux/module.h>
 #include <linux/moduleparam.h>
 #include <linux/device.h>
 #include <linux/delay.h>
 #include <linux/gpio.h>

 #include <sound/core.h>
 #include <sound/pcm.h>
 #include <sound/soc.h>
 #include <sound/soc-dapm.h>
 #include <sound/pcm_params.h>

 #include <asm/blackfin.h>
 #include <asm/cacheflush.h>
 #include <asm/irq.h>
 #include <asm/dma.h>
 #include <asm/portmux.h>

 #include "../codecs/ad73311.h"
 #include "bf5xx-sport.h"
 #include "bf5xx-i2s-pcm.h"
 #include "bf5xx-i2s.h"

 #if CONFIG_SND_BF5XX_SPORT_NUM == 0
 #define bfin_write_SPORT_TCR1	bfin_write_SPORT0_TCR1
 #define bfin_read_SPORT_TCR1	bfin_read_SPORT0_TCR1
 #define bfin_write_SPORT_TCR2	bfin_write_SPORT0_TCR2
 #define bfin_write_SPORT_TX16	bfin_write_SPORT0_TX16
 #define bfin_read_SPORT_STAT	bfin_read_SPORT0_STAT
 #else
 #define bfin_write_SPORT_TCR1	bfin_write_SPORT1_TCR1
 #define bfin_read_SPORT_TCR1	bfin_read_SPORT1_TCR1
 #define bfin_write_SPORT_TCR2	bfin_write_SPORT1_TCR2
 #define bfin_write_SPORT_TX16	bfin_write_SPORT1_TX16
 #define bfin_read_SPORT_STAT	bfin_read_SPORT1_STAT
 #endif

 #define GPIO_SE CONFIG_SND_BFIN_AD73311_SE

 static struct snd_soc_card bf5xx_ad73311;

 static int snd_ad73311_startup(void)
 {
 	pr_debug("%s enter\n", __func__);

 	/* Pull up SE pin on AD73311L */
 	gpio_set_value(GPIO_SE, 1);
 	return 0;
 }

 static int snd_ad73311_configure(void)
 {
 	unsigned short ctrl_regs[6];
 	unsigned short status = 0;
 	int count = 0;

 	/* DMCLK = MCLK = 16.384 MHz
 	 * SCLK = DMCLK/8 = 2.048 MHz
 	 * Sample Rate = DMCLK/2048  = 8 KHz
 	 */
 	ctrl_regs[0] = AD_CONTROL | AD_WRITE | CTRL_REG_B | REGB_MCDIV(0) | \
 			REGB_SCDIV(0) | REGB_DIRATE(0);
 	ctrl_regs[1] = AD_CONTROL | AD_WRITE | CTRL_REG_C | REGC_PUDEV | \
 			REGC_PUADC | REGC_PUDAC | REGC_PUREF | REGC_REFUSE ;
 	ctrl_regs[2] = AD_CONTROL | AD_WRITE | CTRL_REG_D | REGD_OGS(2) | \
 			REGD_IGS(2);
 	ctrl_regs[3] = AD_CONTROL | AD_WRITE | CTRL_REG_E | REGE_DA(0x1f);
 	ctrl_regs[4] = AD_CONTROL | AD_WRITE | CTRL_REG_F | REGF_SEEN ;
 	ctrl_regs[5] = AD_CONTROL | AD_WRITE | CTRL_REG_A | REGA_MODE_DATA;

 	local_irq_disable();
 	snd_ad73311_startup();
 	udelay(1);

 	bfin_write_SPORT_TCR1(TFSR);
 	bfin_write_SPORT_TCR2(0xF);
 	SSYNC();

 	/* SPORT Tx Register is a 8 x 16 FIFO, all the data can be put to
 	 * FIFO before enable SPORT to transfer the data
 	 */
 	for (count = 0; count < 6; count++)
 		bfin_write_SPORT_TX16(ctrl_regs[count]);
 	SSYNC();
 	bfin_write_SPORT_TCR1(bfin_read_SPORT_TCR1() | TSPEN);
 	SSYNC();

 	/* When TUVF is set, the data is already send out */
 	while (!(status & TUVF) && count++ < 10000) {
 		udelay(1);
 		status = bfin_read_SPORT_STAT();
 		SSYNC();
 	}
 	bfin_write_SPORT_TCR1(bfin_read_SPORT_TCR1() & ~TSPEN);
 	SSYNC();
 	local_irq_enable();

 	if (count == 10000) {
 		printk(KERN_ERR "ad73311: failed to configure codec\n");
 		return -1;
 	}
 	return 0;
 }

 static int bf5xx_probe(struct platform_device *pdev)
 {
 	int err;
 	if (gpio_request(GPIO_SE, "AD73311_SE")) {
 		printk(KERN_ERR "%s: Failed ro request GPIO_%d\n", __func__, GPIO_SE);
 		return -EBUSY;
 	}

 	gpio_direction_output(GPIO_SE, 0);

 	err = snd_ad73311_configure();
 	if (err < 0)
 		return -EFAULT;

 	return 0;
 }

 static int bf5xx_ad73311_startup(struct snd_pcm_substream *substream)
 {
 	struct snd_soc_pcm_runtime *rtd = substream->private_data;
 	struct snd_soc_dai *cpu_dai = rtd->dai->cpu_dai;

 	pr_debug("%s enter\n", __func__);
 	cpu_dai->private_data = sport_handle;
 	return 0;
 }

 static int bf5xx_ad73311_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 *cpu_dai = rtd->dai->cpu_dai;
 	int ret = 0;

 	pr_debug("%s rate %d format %x\n", __func__, params_rate(params),
 		params_format(params));

 	/* set cpu DAI configuration */
 	ret = snd_soc_dai_set_fmt(cpu_dai, SND_SOC_DAIFMT_DSP_A |
 		SND_SOC_DAIFMT_NB_NF | SND_SOC_DAIFMT_CBM_CFM);
 	if (ret < 0)
 		return ret;

 	return 0;
 }


 static struct snd_soc_ops bf5xx_ad73311_ops = {
 	.startup = bf5xx_ad73311_startup,
 	.hw_params = bf5xx_ad73311_hw_params,
 };

 static struct snd_soc_dai_link bf5xx_ad73311_dai = {
 	.name = "ad73311",
 	.stream_name = "AD73311",
 	.cpu_dai = &bf5xx_i2s_dai,
 	.codec_dai = &ad73311_dai,
 	.ops = &bf5xx_ad73311_ops,
 };

 static struct snd_soc_card bf5xx_ad73311 = {
 	.name = "bf5xx_ad73311",
 	.platform = &bf5xx_i2s_soc_platform,
 	.probe = bf5xx_probe,
 	.dai_link = &bf5xx_ad73311_dai,
 	.num_links = 1,
 };

 static struct snd_soc_device bf5xx_ad73311_snd_devdata = {
 	.card = &bf5xx_ad73311,
 	.codec_dev = &soc_codec_dev_ad73311,
 };

 static struct platform_device *bf52x_ad73311_snd_device;

 static int __init bf5xx_ad73311_init(void)
 {
 	int ret;

 	pr_debug("%s enter\n", __func__);
 	bf52x_ad73311_snd_device = platform_device_alloc("soc-audio", -1);
 	if (!bf52x_ad73311_snd_device)
 		return -ENOMEM;

 	platform_set_drvdata(bf52x_ad73311_snd_device, &bf5xx_ad73311_snd_devdata);
 	bf5xx_ad73311_snd_devdata.dev = &bf52x_ad73311_snd_device->dev;
 	ret = platform_device_add(bf52x_ad73311_snd_device);

 	if (ret)
 		platform_device_put(bf52x_ad73311_snd_device);

 	return ret;
 }

 static void __exit bf5xx_ad73311_exit(void)
 {
 	pr_debug("%s enter\n", __func__);
 	platform_device_unregister(bf52x_ad73311_snd_device);
 }

 module_init(bf5xx_ad73311_init);
 module_exit(bf5xx_ad73311_exit);

 /* Module information */
 MODULE_AUTHOR("Cliff Cai");
 MODULE_DESCRIPTION("ALSA SoC AD73311 Blackfin");
 MODULE_LICENSE("GPL");
	/*
	* File: sound/soc/blackfin/bf5xx-ad73311.c
	* Author: Cliff Cai <Cliff.Cai@analog.com>
	*
	* Created: Thur Sep 25 2008
	* Description: Board driver for ad73311 sound chip
	*
	* Modified:
	* Copyright 2008 Analog Devices Inc.
	*
	* Bugs: Enter bugs at http://blackfin.uclinux.org/
	*
	* 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.
	*
	* This program is distributed in the hope that it will be useful,
	* but WITHOUT ANY WARRANTY; without even the implied warranty of
	* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
	* GNU General Public License for more details.
	*
	* You should have received a copy of the GNU General Public License
	* along with this program; if not, see the file COPYING, or write
	* to the Free Software Foundation, Inc.,
	* 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
	*/

	#include <linux/module.h>
	#include <linux/moduleparam.h>
	#include <linux/device.h>
	#include <linux/delay.h>
	#include <linux/gpio.h>

	#include <sound/core.h>
	#include <sound/pcm.h>
	#include <sound/soc.h>
	#include <sound/soc-dapm.h>
	#include <sound/pcm_params.h>

	#include <asm/blackfin.h>
	#include <asm/cacheflush.h>
	#include <asm/irq.h>
	#include <asm/dma.h>
	#include <asm/portmux.h>

	#include "../codecs/ad73311.h"
	#include "bf5xx-sport.h"
	#include "bf5xx-i2s-pcm.h"
	#include "bf5xx-i2s.h"

	#if CONFIG_SND_BF5XX_SPORT_NUM == 0
	#define bfin_write_SPORT_TCR1 bfin_write_SPORT0_TCR1
	#define bfin_read_SPORT_TCR1 bfin_read_SPORT0_TCR1
	#define bfin_write_SPORT_TCR2 bfin_write_SPORT0_TCR2
	#define bfin_write_SPORT_TX16 bfin_write_SPORT0_TX16
	#define bfin_read_SPORT_STAT bfin_read_SPORT0_STAT
	#else
	#define bfin_write_SPORT_TCR1 bfin_write_SPORT1_TCR1
	#define bfin_read_SPORT_TCR1 bfin_read_SPORT1_TCR1
	#define bfin_write_SPORT_TCR2 bfin_write_SPORT1_TCR2
	#define bfin_write_SPORT_TX16 bfin_write_SPORT1_TX16
	#define bfin_read_SPORT_STAT bfin_read_SPORT1_STAT
	#endif

	#define GPIO_SE CONFIG_SND_BFIN_AD73311_SE

	static struct snd_soc_card bf5xx_ad73311;

	static int snd_ad73311_startup(void)
	{
	pr_debug("%s enter\n", __func__);

	/* Pull up SE pin on AD73311L */
	gpio_set_value(GPIO_SE, 1);
	return 0;
	}

	static int snd_ad73311_configure(void)
	{
	unsigned short ctrl_regs[6];
	unsigned short status = 0;
	int count = 0;

	/* DMCLK = MCLK = 16.384 MHz
	* SCLK = DMCLK/8 = 2.048 MHz
	* Sample Rate = DMCLK/2048 = 8 KHz
	*/
	ctrl_regs[0] = AD_CONTROL \| AD_WRITE \| CTRL_REG_B \| REGB_MCDIV(0) \| \
	REGB_SCDIV(0) \| REGB_DIRATE(0);
	ctrl_regs[1] = AD_CONTROL \| AD_WRITE \| CTRL_REG_C \| REGC_PUDEV \| \
	REGC_PUADC \| REGC_PUDAC \| REGC_PUREF \| REGC_REFUSE ;
	ctrl_regs[2] = AD_CONTROL \| AD_WRITE \| CTRL_REG_D \| REGD_OGS(2) \| \
	REGD_IGS(2);
	ctrl_regs[3] = AD_CONTROL \| AD_WRITE \| CTRL_REG_E \| REGE_DA(0x1f);
	ctrl_regs[4] = AD_CONTROL \| AD_WRITE \| CTRL_REG_F \| REGF_SEEN ;
	ctrl_regs[5] = AD_CONTROL \| AD_WRITE \| CTRL_REG_A \| REGA_MODE_DATA;

	local_irq_disable();
	snd_ad73311_startup();
	udelay(1);

	bfin_write_SPORT_TCR1(TFSR);
	bfin_write_SPORT_TCR2(0xF);
	SSYNC();

	/* SPORT Tx Register is a 8 x 16 FIFO, all the data can be put to
	* FIFO before enable SPORT to transfer the data
	*/
	for (count = 0; count < 6; count++)
	bfin_write_SPORT_TX16(ctrl_regs[count]);
	SSYNC();
	bfin_write_SPORT_TCR1(bfin_read_SPORT_TCR1() \| TSPEN);
	SSYNC();

	/* When TUVF is set, the data is already send out */
	while (!(status & TUVF) && count++ < 10000) {
	udelay(1);
	status = bfin_read_SPORT_STAT();
	SSYNC();
	}
	bfin_write_SPORT_TCR1(bfin_read_SPORT_TCR1() & ~TSPEN);
	SSYNC();
	local_irq_enable();

	if (count == 10000) {
	printk(KERN_ERR "ad73311: failed to configure codec\n");
	return -1;
	}
	return 0;
	}

	static int bf5xx_probe(struct platform_device *pdev)
	{
	int err;
	if (gpio_request(GPIO_SE, "AD73311_SE")) {
	printk(KERN_ERR "%s: Failed ro request GPIO_%d\n", __func__, GPIO_SE);
	return -EBUSY;
	}

	gpio_direction_output(GPIO_SE, 0);

	err = snd_ad73311_configure();
	if (err < 0)
	return -EFAULT;

	return 0;
	}

	static int bf5xx_ad73311_startup(struct snd_pcm_substream *substream)
	{
	struct snd_soc_pcm_runtime *rtd = substream->private_data;
	struct snd_soc_dai *cpu_dai = rtd->dai->cpu_dai;

	pr_debug("%s enter\n", __func__);
	cpu_dai->private_data = sport_handle;
	return 0;
	}

	static int bf5xx_ad73311_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 *cpu_dai = rtd->dai->cpu_dai;
	int ret = 0;

	pr_debug("%s rate %d format %x\n", __func__, params_rate(params),
	params_format(params));

	/* set cpu DAI configuration */
	ret = snd_soc_dai_set_fmt(cpu_dai, SND_SOC_DAIFMT_DSP_A \|
	SND_SOC_DAIFMT_NB_NF \| SND_SOC_DAIFMT_CBM_CFM);
	if (ret < 0)
	return ret;

	return 0;
	}


	static struct snd_soc_ops bf5xx_ad73311_ops = {
	.startup = bf5xx_ad73311_startup,
	.hw_params = bf5xx_ad73311_hw_params,
	};

	static struct snd_soc_dai_link bf5xx_ad73311_dai = {
	.name = "ad73311",
	.stream_name = "AD73311",
	.cpu_dai = &bf5xx_i2s_dai,
	.codec_dai = &ad73311_dai,
	.ops = &bf5xx_ad73311_ops,
	};

	static struct snd_soc_card bf5xx_ad73311 = {
	.name = "bf5xx_ad73311",
	.platform = &bf5xx_i2s_soc_platform,
	.probe = bf5xx_probe,
	.dai_link = &bf5xx_ad73311_dai,
	.num_links = 1,
	};

	static struct snd_soc_device bf5xx_ad73311_snd_devdata = {
	.card = &bf5xx_ad73311,
	.codec_dev = &soc_codec_dev_ad73311,
	};

	static struct platform_device *bf52x_ad73311_snd_device;

	static int __init bf5xx_ad73311_init(void)
	{
	int ret;

	pr_debug("%s enter\n", __func__);
	bf52x_ad73311_snd_device = platform_device_alloc("soc-audio", -1);
	if (!bf52x_ad73311_snd_device)
	return -ENOMEM;

	platform_set_drvdata(bf52x_ad73311_snd_device, &bf5xx_ad73311_snd_devdata);
	bf5xx_ad73311_snd_devdata.dev = &bf52x_ad73311_snd_device->dev;
	ret = platform_device_add(bf52x_ad73311_snd_device);

	if (ret)
	platform_device_put(bf52x_ad73311_snd_device);

	return ret;
	}

	static void __exit bf5xx_ad73311_exit(void)
	{
	pr_debug("%s enter\n", __func__);
	platform_device_unregister(bf52x_ad73311_snd_device);
	}

	module_init(bf5xx_ad73311_init);
	module_exit(bf5xx_ad73311_exit);

	/* Module information */
	MODULE_AUTHOR("Cliff Cai");
	MODULE_DESCRIPTION("ALSA SoC AD73311 Blackfin");
	MODULE_LICENSE("GPL");