[deliverable/linux.git] / sound / soc / blackfin / bf5xx-i2s.c

/*
 * File:         sound/soc/blackfin/bf5xx-i2s.c
 * Author:       Cliff Cai <Cliff.Cai@analog.com>
 *
 * Created:      Tue June 06 2008
 * Description:  Blackfin I2S CPU DAI driver
 *
 * 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/init.h>
#include <linux/module.h>
#include <linux/device.h>
#include <linux/delay.h>
#include <sound/core.h>
#include <sound/pcm.h>
#include <sound/pcm_params.h>
#include <sound/initval.h>
#include <sound/soc.h>

#include <asm/irq.h>
#include <asm/portmux.h>
#include <linux/mutex.h>
#include <linux/gpio.h>

#include "bf5xx-sport.h"
#include "bf5xx-i2s-pcm.h"

struct bf5xx_i2s_port {
	u16 tcr1;
	u16 rcr1;
	u16 tcr2;
	u16 rcr2;
	int configured;

	unsigned int slots;
	unsigned int tx_mask;
	unsigned int rx_mask;

	struct bf5xx_i2s_pcm_data tx_dma_data;
	struct bf5xx_i2s_pcm_data rx_dma_data;
};

static int bf5xx_i2s_set_dai_fmt(struct snd_soc_dai *cpu_dai,
		unsigned int fmt)
{
	struct sport_device *sport_handle = snd_soc_dai_get_drvdata(cpu_dai);
	struct bf5xx_i2s_port *bf5xx_i2s = sport_handle->private_data;
	int ret = 0;

	/* interface format:support I2S,slave mode */
	switch (fmt & SND_SOC_DAIFMT_FORMAT_MASK) {
	case SND_SOC_DAIFMT_I2S:
		bf5xx_i2s->tcr1 |= TFSR | TCKFE;
		bf5xx_i2s->rcr1 |= RFSR | RCKFE;
		bf5xx_i2s->tcr2 |= TSFSE;
		bf5xx_i2s->rcr2 |= RSFSE;
		break;
	case SND_SOC_DAIFMT_DSP_A:
		bf5xx_i2s->tcr1 |= TFSR;
		bf5xx_i2s->rcr1 |= RFSR;
		break;
	case SND_SOC_DAIFMT_LEFT_J:
		ret = -EINVAL;
		break;
	default:
		dev_err(cpu_dai->dev, "%s: Unknown DAI format type\n",
			__func__);
		ret = -EINVAL;
		break;
	}

	switch (fmt & SND_SOC_DAIFMT_MASTER_MASK) {
	case SND_SOC_DAIFMT_CBM_CFM:
		break;
	case SND_SOC_DAIFMT_CBS_CFS:
	case SND_SOC_DAIFMT_CBM_CFS:
	case SND_SOC_DAIFMT_CBS_CFM:
		ret = -EINVAL;
		break;
	default:
		dev_err(cpu_dai->dev, "%s: Unknown DAI master type\n",
			__func__);
		ret = -EINVAL;
		break;
	}

	return ret;
}

static int bf5xx_i2s_hw_params(struct snd_pcm_substream *substream,
				struct snd_pcm_hw_params *params,
				struct snd_soc_dai *dai)
{
	struct sport_device *sport_handle = snd_soc_dai_get_drvdata(dai);
	struct bf5xx_i2s_port *bf5xx_i2s = sport_handle->private_data;
	int ret = 0;

	bf5xx_i2s->tcr2 &= ~0x1f;
	bf5xx_i2s->rcr2 &= ~0x1f;
	switch (params_format(params)) {
	case SNDRV_PCM_FORMAT_S8:
		bf5xx_i2s->tcr2 |= 7;
		bf5xx_i2s->rcr2 |= 7;
		sport_handle->wdsize = 1;
		break;
	case SNDRV_PCM_FORMAT_S16_LE:
		bf5xx_i2s->tcr2 |= 15;
		bf5xx_i2s->rcr2 |= 15;
		sport_handle->wdsize = 2;
		break;
	case SNDRV_PCM_FORMAT_S24_LE:
		bf5xx_i2s->tcr2 |= 23;
		bf5xx_i2s->rcr2 |= 23;
		sport_handle->wdsize = 3;
		break;
	case SNDRV_PCM_FORMAT_S32_LE:
		bf5xx_i2s->tcr2 |= 31;
		bf5xx_i2s->rcr2 |= 31;
		sport_handle->wdsize = 4;
		break;
	}

	if (!bf5xx_i2s->configured) {
		/*
		 * TX and RX are not independent,they are enabled at the
		 * same time, even if only one side is running. So, we
		 * need to configure both of them at the time when the first
		 * stream is opened.
		 *
		 * CPU DAI:slave mode.
		 */
		bf5xx_i2s->configured = 1;
		ret = sport_config_rx(sport_handle, bf5xx_i2s->rcr1,
				      bf5xx_i2s->rcr2, 0, 0);
		if (ret) {
			dev_err(dai->dev, "SPORT is busy!\n");
			return -EBUSY;
		}

		ret = sport_config_tx(sport_handle, bf5xx_i2s->tcr1,
				      bf5xx_i2s->tcr2, 0, 0);
		if (ret) {
			dev_err(dai->dev, "SPORT is busy!\n");
			return -EBUSY;
		}
	}

	return 0;
}

static void bf5xx_i2s_shutdown(struct snd_pcm_substream *substream,
			       struct snd_soc_dai *dai)
{
	struct sport_device *sport_handle = snd_soc_dai_get_drvdata(dai);
	struct bf5xx_i2s_port *bf5xx_i2s = sport_handle->private_data;

	dev_dbg(dai->dev, "%s enter\n", __func__);
	/* No active stream, SPORT is allowed to be configured again. */
	if (!dai->active)
		bf5xx_i2s->configured = 0;
}

static int bf5xx_i2s_set_channel_map(struct snd_soc_dai *dai,
		unsigned int tx_num, unsigned int *tx_slot,
		unsigned int rx_num, unsigned int *rx_slot)
{
	struct sport_device *sport_handle = snd_soc_dai_get_drvdata(dai);
	struct bf5xx_i2s_port *bf5xx_i2s = sport_handle->private_data;
	unsigned int tx_mapped = 0, rx_mapped = 0;
	unsigned int slot;
	int i;

	if ((tx_num > BFIN_TDM_DAI_MAX_SLOTS) ||
			(rx_num > BFIN_TDM_DAI_MAX_SLOTS))
		return -EINVAL;

	for (i = 0; i < tx_num; i++) {
		slot = tx_slot[i];
		if ((slot < BFIN_TDM_DAI_MAX_SLOTS) &&
				(!(tx_mapped & (1 << slot)))) {
			bf5xx_i2s->tx_dma_data.map[i] = slot;
			tx_mapped |= 1 << slot;
		} else
			return -EINVAL;
	}
	for (i = 0; i < rx_num; i++) {
		slot = rx_slot[i];
		if ((slot < BFIN_TDM_DAI_MAX_SLOTS) &&
				(!(rx_mapped & (1 << slot)))) {
			bf5xx_i2s->rx_dma_data.map[i] = slot;
			rx_mapped |= 1 << slot;
		} else
			return -EINVAL;
	}

	return 0;
}

static int bf5xx_i2s_set_tdm_slot(struct snd_soc_dai *dai, unsigned int tx_mask,
	unsigned int rx_mask, int slots, int width)
{
	struct sport_device *sport_handle = snd_soc_dai_get_drvdata(dai);
	struct bf5xx_i2s_port *bf5xx_i2s = sport_handle->private_data;

	if (slots % 8 != 0 || slots > 8)
		return -EINVAL;

	if (width != 32)
		return -EINVAL;

	bf5xx_i2s->slots = slots;
	bf5xx_i2s->tx_mask = tx_mask;
	bf5xx_i2s->rx_mask = rx_mask;

	bf5xx_i2s->tx_dma_data.tdm_mode = slots != 0;
	bf5xx_i2s->rx_dma_data.tdm_mode = slots != 0;

	return sport_set_multichannel(sport_handle, slots, tx_mask, rx_mask, 0);
}

#ifdef CONFIG_PM
static int bf5xx_i2s_suspend(struct snd_soc_dai *dai)
{
	struct sport_device *sport_handle = snd_soc_dai_get_drvdata(dai);

	dev_dbg(dai->dev, "%s : sport %d\n", __func__, dai->id);

	if (dai->capture_active)
		sport_rx_stop(sport_handle);
	if (dai->playback_active)
		sport_tx_stop(sport_handle);
	return 0;
}

static int bf5xx_i2s_resume(struct snd_soc_dai *dai)
{
	struct sport_device *sport_handle = snd_soc_dai_get_drvdata(dai);
	struct bf5xx_i2s_port *bf5xx_i2s = sport_handle->private_data;
	int ret;

	dev_dbg(dai->dev, "%s : sport %d\n", __func__, dai->id);

	ret = sport_config_rx(sport_handle, bf5xx_i2s->rcr1,
				      bf5xx_i2s->rcr2, 0, 0);
	if (ret) {
		dev_err(dai->dev, "SPORT is busy!\n");
		return -EBUSY;
	}

	ret = sport_config_tx(sport_handle, bf5xx_i2s->tcr1,
				      bf5xx_i2s->tcr2, 0, 0);
	if (ret) {
		dev_err(dai->dev, "SPORT is busy!\n");
		return -EBUSY;
	}

	return sport_set_multichannel(sport_handle, bf5xx_i2s->slots,
			bf5xx_i2s->tx_mask, bf5xx_i2s->rx_mask, 0);
}

#else
#define bf5xx_i2s_suspend	NULL
#define bf5xx_i2s_resume	NULL
#endif

static int bf5xx_i2s_dai_probe(struct snd_soc_dai *dai)
{
	struct sport_device *sport_handle = snd_soc_dai_get_drvdata(dai);
	struct bf5xx_i2s_port *bf5xx_i2s = sport_handle->private_data;
	unsigned int i;

	for (i = 0; i < BFIN_TDM_DAI_MAX_SLOTS; i++) {
		bf5xx_i2s->tx_dma_data.map[i] = i;
		bf5xx_i2s->rx_dma_data.map[i] = i;
	}

	dai->playback_dma_data = &bf5xx_i2s->tx_dma_data;
	dai->capture_dma_data = &bf5xx_i2s->rx_dma_data;

	return 0;
}

#define BF5XX_I2S_RATES (SNDRV_PCM_RATE_8000 | SNDRV_PCM_RATE_11025 |\
		SNDRV_PCM_RATE_16000 | SNDRV_PCM_RATE_22050 | \
		SNDRV_PCM_RATE_44100 | SNDRV_PCM_RATE_48000 | \
		SNDRV_PCM_RATE_96000)

#define BF5XX_I2S_FORMATS \
	(SNDRV_PCM_FMTBIT_S8 | \
	 SNDRV_PCM_FMTBIT_S16_LE | \
	 SNDRV_PCM_FMTBIT_S24_LE | \
	 SNDRV_PCM_FMTBIT_S32_LE)

static const struct snd_soc_dai_ops bf5xx_i2s_dai_ops = {
	.shutdown	 = bf5xx_i2s_shutdown,
	.hw_params	 = bf5xx_i2s_hw_params,
	.set_fmt	 = bf5xx_i2s_set_dai_fmt,
	.set_tdm_slot	 = bf5xx_i2s_set_tdm_slot,
	.set_channel_map = bf5xx_i2s_set_channel_map,
};

static struct snd_soc_dai_driver bf5xx_i2s_dai = {
	.probe = bf5xx_i2s_dai_probe,
	.suspend = bf5xx_i2s_suspend,
	.resume = bf5xx_i2s_resume,
	.playback = {
		.channels_min = 2,
		.channels_max = 8,
		.rates = BF5XX_I2S_RATES,
		.formats = BF5XX_I2S_FORMATS,},
	.capture = {
		.channels_min = 2,
		.channels_max = 8,
		.rates = BF5XX_I2S_RATES,
		.formats = BF5XX_I2S_FORMATS,},
	.ops = &bf5xx_i2s_dai_ops,
};

static const struct snd_soc_component_driver bf5xx_i2s_component = {
	.name		= "bf5xx-i2s",
};

static int bf5xx_i2s_probe(struct platform_device *pdev)
{
	struct sport_device *sport_handle;
	int ret;

	/* configure SPORT for I2S */
	sport_handle = sport_init(pdev, 4, 8 * sizeof(u32),
		sizeof(struct bf5xx_i2s_port));
	if (!sport_handle)
		return -ENODEV;

	/* register with the ASoC layers */
	ret = snd_soc_register_component(&pdev->dev, &bf5xx_i2s_component,
					 &bf5xx_i2s_dai, 1);
	if (ret) {
		dev_err(&pdev->dev, "Failed to register DAI: %d\n", ret);
		sport_done(sport_handle);
		return ret;
	}

	return 0;
}

static int bf5xx_i2s_remove(struct platform_device *pdev)
{
	struct sport_device *sport_handle = platform_get_drvdata(pdev);

	dev_dbg(&pdev->dev, "%s enter\n", __func__);

	snd_soc_unregister_component(&pdev->dev);
	sport_done(sport_handle);

	return 0;
}

static struct platform_driver bfin_i2s_driver = {
	.probe  = bf5xx_i2s_probe,
	.remove = bf5xx_i2s_remove,
	.driver = {
		.name = "bfin-i2s",
		.owner = THIS_MODULE,
	},
};

module_platform_driver(bfin_i2s_driver);

/* Module information */
MODULE_AUTHOR("Cliff Cai");
MODULE_DESCRIPTION("I2S driver for ADI Blackfin");
MODULE_LICENSE("GPL");
Commit	Line	Data
912c2ac9 CC	1	/*
	2	* File: sound/soc/blackfin/bf5xx-i2s.c
	3	* Author: Cliff Cai <Cliff.Cai@analog.com>
	4	*
	5	* Created: Tue June 06 2008
	6	* Description: Blackfin I2S CPU DAI driver
	7	*
	8	* Modified:
	9	* Copyright 2008 Analog Devices Inc.
	10	*
	11	* Bugs: Enter bugs at http://blackfin.uclinux.org/
	12	*
	13	* This program is free software; you can redistribute it and/or modify
	14	* it under the terms of the GNU General Public License as published by
	15	* the Free Software Foundation; either version 2 of the License, or
	16	* (at your option) any later version.
	17	*
	18	* This program is distributed in the hope that it will be useful,
	19	* but WITHOUT ANY WARRANTY; without even the implied warranty of
	20	* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
	21	* GNU General Public License for more details.
	22	*
	23	* You should have received a copy of the GNU General Public License
	24	* along with this program; if not, see the file COPYING, or write
	25	* to the Free Software Foundation, Inc.,
	26	* 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
	27	*/
	28
	29	#include <linux/init.h>
	30	#include <linux/module.h>
	31	#include <linux/device.h>
	32	#include <linux/delay.h>
	33	#include <sound/core.h>
	34	#include <sound/pcm.h>
	35	#include <sound/pcm_params.h>
	36	#include <sound/initval.h>
	37	#include <sound/soc.h>
	38
	39	#include <asm/irq.h>
	40	#include <asm/portmux.h>
	41	#include <linux/mutex.h>
	42	#include <linux/gpio.h>
	43
	44	#include "bf5xx-sport.h"
8b5e2e39	45	#include "bf5xx-i2s-pcm.h"
912c2ac9 CC	46
	47	struct bf5xx_i2s_port {
	48	u16 tcr1;
	49	u16 rcr1;
	50	u16 tcr2;
	51	u16 rcr2;
895c9c05	52	int configured;
8b5e2e39 LPC	53
	54	unsigned int slots;
	55	unsigned int tx_mask;
	56	unsigned int rx_mask;
	57
	58	struct bf5xx_i2s_pcm_data tx_dma_data;
	59	struct bf5xx_i2s_pcm_data rx_dma_data;
912c2ac9 CC	60	};
912c2ac9 CC	61
912c2ac9 CC	62	static int bf5xx_i2s_set_dai_fmt(struct snd_soc_dai *cpu_dai,
	63	unsigned int fmt)
	64	{
2c66cb99 BS	65	struct sport_device *sport_handle = snd_soc_dai_get_drvdata(cpu_dai);
2c66cb99 BS	66	struct bf5xx_i2s_port *bf5xx_i2s = sport_handle->private_data;
912c2ac9 CC	67	int ret = 0;
	68
	69	/* interface format:support I2S,slave mode */
	70	switch (fmt & SND_SOC_DAIFMT_FORMAT_MASK) {
	71	case SND_SOC_DAIFMT_I2S:
2c66cb99 BS	72	bf5xx_i2s->tcr1 \|= TFSR \| TCKFE;
	73	bf5xx_i2s->rcr1 \|= RFSR \| RCKFE;
	74	bf5xx_i2s->tcr2 \|= TSFSE;
	75	bf5xx_i2s->rcr2 \|= RSFSE;
33392680 CC	76	break;
33392680 CC	77	case SND_SOC_DAIFMT_DSP_A:
2c66cb99 BS	78	bf5xx_i2s->tcr1 \|= TFSR;
2c66cb99 BS	79	bf5xx_i2s->rcr1 \|= RFSR;
912c2ac9 CC	80	break;
	81	case SND_SOC_DAIFMT_LEFT_J:
	82	ret = -EINVAL;
	83	break;
	84	default:
b7ede5de LPC	85	dev_err(cpu_dai->dev, "%s: Unknown DAI format type\n",
b7ede5de LPC	86	__func__);
912c2ac9 CC	87	ret = -EINVAL;
	88	break;
	89	}
	90
	91	switch (fmt & SND_SOC_DAIFMT_MASTER_MASK) {
912c2ac9 CC	92	case SND_SOC_DAIFMT_CBM_CFM:
912c2ac9 CC	93	break;
c3e5203b CC	94	case SND_SOC_DAIFMT_CBS_CFS:
c3e5203b CC	95	case SND_SOC_DAIFMT_CBM_CFS:
912c2ac9 CC	96	case SND_SOC_DAIFMT_CBS_CFM:
	97	ret = -EINVAL;
	98	break;
	99	default:
b7ede5de LPC	100	dev_err(cpu_dai->dev, "%s: Unknown DAI master type\n",
b7ede5de LPC	101	__func__);
912c2ac9 CC	102	ret = -EINVAL;
	103	break;
	104	}
	105
	106	return ret;
	107	}
	108
912c2ac9	109	static int bf5xx_i2s_hw_params(struct snd_pcm_substream *substream,
dee89c4d MB	110	struct snd_pcm_hw_params *params,
dee89c4d MB	111	struct snd_soc_dai *dai)
912c2ac9	112	{
2c66cb99 BS	113	struct sport_device *sport_handle = snd_soc_dai_get_drvdata(dai);
2c66cb99 BS	114	struct bf5xx_i2s_port *bf5xx_i2s = sport_handle->private_data;
912c2ac9 CC	115	int ret = 0;
912c2ac9 CC	116
2c66cb99 BS	117	bf5xx_i2s->tcr2 &= ~0x1f;
2c66cb99 BS	118	bf5xx_i2s->rcr2 &= ~0x1f;
912c2ac9	119	switch (params_format(params)) {
4b2ffc20 CC	120	case SNDRV_PCM_FORMAT_S8:
	121	bf5xx_i2s->tcr2 \|= 7;
	122	bf5xx_i2s->rcr2 \|= 7;
	123	sport_handle->wdsize = 1;
afed4dbe	124	break;
912c2ac9	125	case SNDRV_PCM_FORMAT_S16_LE:
2c66cb99 BS	126	bf5xx_i2s->tcr2 \|= 15;
2c66cb99 BS	127	bf5xx_i2s->rcr2 \|= 15;
33392680	128	sport_handle->wdsize = 2;
912c2ac9 CC	129	break;
912c2ac9 CC	130	case SNDRV_PCM_FORMAT_S24_LE:
2c66cb99 BS	131	bf5xx_i2s->tcr2 \|= 23;
2c66cb99 BS	132	bf5xx_i2s->rcr2 \|= 23;
33392680	133	sport_handle->wdsize = 3;
912c2ac9 CC	134	break;
912c2ac9 CC	135	case SNDRV_PCM_FORMAT_S32_LE:
2c66cb99 BS	136	bf5xx_i2s->tcr2 \|= 31;
2c66cb99 BS	137	bf5xx_i2s->rcr2 \|= 31;
33392680	138	sport_handle->wdsize = 4;
912c2ac9 CC	139	break;
	140	}
	141
2c66cb99	142	if (!bf5xx_i2s->configured) {
912c2ac9 CC	143	/*
	144	* TX and RX are not independent,they are enabled at the
	145	* same time, even if only one side is running. So, we
	146	* need to configure both of them at the time when the first
	147	* stream is opened.
	148	*
33392680	149	* CPU DAI:slave mode.
912c2ac9	150	*/
2c66cb99 BS	151	bf5xx_i2s->configured = 1;
	152	ret = sport_config_rx(sport_handle, bf5xx_i2s->rcr1,
	153	bf5xx_i2s->rcr2, 0, 0);
912c2ac9	154	if (ret) {
b7ede5de	155	dev_err(dai->dev, "SPORT is busy!\n");
912c2ac9 CC	156	return -EBUSY;
	157	}
	158
2c66cb99 BS	159	ret = sport_config_tx(sport_handle, bf5xx_i2s->tcr1,
2c66cb99 BS	160	bf5xx_i2s->tcr2, 0, 0);
912c2ac9	161	if (ret) {
b7ede5de	162	dev_err(dai->dev, "SPORT is busy!\n");
912c2ac9 CC	163	return -EBUSY;
	164	}
	165	}
	166
	167	return 0;
	168	}
	169
dee89c4d MB	170	static void bf5xx_i2s_shutdown(struct snd_pcm_substream *substream,
dee89c4d MB	171	struct snd_soc_dai *dai)
912c2ac9	172	{
2c66cb99 BS	173	struct sport_device *sport_handle = snd_soc_dai_get_drvdata(dai);
	174	struct bf5xx_i2s_port *bf5xx_i2s = sport_handle->private_data;
	175
b7ede5de	176	dev_dbg(dai->dev, "%s enter\n", __func__);
895c9c05	177	/* No active stream, SPORT is allowed to be configured again. */
766df6d9	178	if (!dai->active)
2c66cb99	179	bf5xx_i2s->configured = 0;
33392680 CC	180	}
33392680 CC	181
8b5e2e39 LPC	182	static int bf5xx_i2s_set_channel_map(struct snd_soc_dai *dai,
	183	unsigned int tx_num, unsigned int *tx_slot,
	184	unsigned int rx_num, unsigned int *rx_slot)
	185	{
	186	struct sport_device *sport_handle = snd_soc_dai_get_drvdata(dai);
	187	struct bf5xx_i2s_port *bf5xx_i2s = sport_handle->private_data;
	188	unsigned int tx_mapped = 0, rx_mapped = 0;
	189	unsigned int slot;
	190	int i;
	191
	192	if ((tx_num > BFIN_TDM_DAI_MAX_SLOTS) \|\|
	193	(rx_num > BFIN_TDM_DAI_MAX_SLOTS))
	194	return -EINVAL;
	195
	196	for (i = 0; i < tx_num; i++) {
	197	slot = tx_slot[i];
	198	if ((slot < BFIN_TDM_DAI_MAX_SLOTS) &&
	199	(!(tx_mapped & (1 << slot)))) {
	200	bf5xx_i2s->tx_dma_data.map[i] = slot;
	201	tx_mapped \|= 1 << slot;
	202	} else
	203	return -EINVAL;
	204	}
	205	for (i = 0; i < rx_num; i++) {
	206	slot = rx_slot[i];
	207	if ((slot < BFIN_TDM_DAI_MAX_SLOTS) &&
	208	(!(rx_mapped & (1 << slot)))) {
	209	bf5xx_i2s->rx_dma_data.map[i] = slot;
	210	rx_mapped \|= 1 << slot;
	211	} else
	212	return -EINVAL;
	213	}
	214
	215	return 0;
	216	}
	217
	218	static int bf5xx_i2s_set_tdm_slot(struct snd_soc_dai *dai, unsigned int tx_mask,
	219	unsigned int rx_mask, int slots, int width)
	220	{
	221	struct sport_device *sport_handle = snd_soc_dai_get_drvdata(dai);
	222	struct bf5xx_i2s_port *bf5xx_i2s = sport_handle->private_data;
	223
	224	if (slots % 8 != 0 \|\| slots > 8)
	225	return -EINVAL;
	226
	227	if (width != 32)
	228	return -EINVAL;
	229
	230	bf5xx_i2s->slots = slots;
	231	bf5xx_i2s->tx_mask = tx_mask;
	232	bf5xx_i2s->rx_mask = rx_mask;
	233
	234	bf5xx_i2s->tx_dma_data.tdm_mode = slots != 0;
	235	bf5xx_i2s->rx_dma_data.tdm_mode = slots != 0;
	236
	237	return sport_set_multichannel(sport_handle, slots, tx_mask, rx_mask, 0);
	238	}
	239
912c2ac9	240	#ifdef CONFIG_PM
dc7d7b83	241	static int bf5xx_i2s_suspend(struct snd_soc_dai *dai)
912c2ac9	242	{
2c66cb99	243	struct sport_device *sport_handle = snd_soc_dai_get_drvdata(dai);
912c2ac9	244
b7ede5de	245	dev_dbg(dai->dev, "%s : sport %d\n", __func__, dai->id);
ad80efc4	246
f0fba2ad	247	if (dai->capture_active)
ad80efc4	248	sport_rx_stop(sport_handle);
f0fba2ad	249	if (dai->playback_active)
ad80efc4	250	sport_tx_stop(sport_handle);
912c2ac9 CC	251	return 0;
	252	}
	253
92a6ad34	254	static int bf5xx_i2s_resume(struct snd_soc_dai *dai)
912c2ac9	255	{
2c66cb99 BS	256	struct sport_device *sport_handle = snd_soc_dai_get_drvdata(dai);
2c66cb99 BS	257	struct bf5xx_i2s_port *bf5xx_i2s = sport_handle->private_data;
912c2ac9	258	int ret;
912c2ac9	259
b7ede5de	260	dev_dbg(dai->dev, "%s : sport %d\n", __func__, dai->id);
912c2ac9	261
2c66cb99 BS	262	ret = sport_config_rx(sport_handle, bf5xx_i2s->rcr1,
2c66cb99 BS	263	bf5xx_i2s->rcr2, 0, 0);
912c2ac9	264	if (ret) {
b7ede5de	265	dev_err(dai->dev, "SPORT is busy!\n");
912c2ac9 CC	266	return -EBUSY;
	267	}
	268
2c66cb99 BS	269	ret = sport_config_tx(sport_handle, bf5xx_i2s->tcr1,
2c66cb99 BS	270	bf5xx_i2s->tcr2, 0, 0);
912c2ac9	271	if (ret) {
b7ede5de	272	dev_err(dai->dev, "SPORT is busy!\n");
912c2ac9 CC	273	return -EBUSY;
	274	}
	275
8b5e2e39 LPC	276	return sport_set_multichannel(sport_handle, bf5xx_i2s->slots,
8b5e2e39 LPC	277	bf5xx_i2s->tx_mask, bf5xx_i2s->rx_mask, 0);
912c2ac9 CC	278	}
	279
	280	#else
	281	#define bf5xx_i2s_suspend NULL
	282	#define bf5xx_i2s_resume NULL
	283	#endif
	284
8b5e2e39 LPC	285	static int bf5xx_i2s_dai_probe(struct snd_soc_dai *dai)
	286	{
	287	struct sport_device *sport_handle = snd_soc_dai_get_drvdata(dai);
	288	struct bf5xx_i2s_port *bf5xx_i2s = sport_handle->private_data;
	289	unsigned int i;
	290
	291	for (i = 0; i < BFIN_TDM_DAI_MAX_SLOTS; i++) {
	292	bf5xx_i2s->tx_dma_data.map[i] = i;
	293	bf5xx_i2s->rx_dma_data.map[i] = i;
	294	}
	295
	296	dai->playback_dma_data = &bf5xx_i2s->tx_dma_data;
	297	dai->capture_dma_data = &bf5xx_i2s->rx_dma_data;
	298
	299	return 0;
	300	}
	301
912c2ac9 CC	302	#define BF5XX_I2S_RATES (SNDRV_PCM_RATE_8000 \| SNDRV_PCM_RATE_11025 \|\
	303	SNDRV_PCM_RATE_16000 \| SNDRV_PCM_RATE_22050 \| \
	304	SNDRV_PCM_RATE_44100 \| SNDRV_PCM_RATE_48000 \| \
	305	SNDRV_PCM_RATE_96000)
	306
4b2ffc20 CC	307	#define BF5XX_I2S_FORMATS \
	308	(SNDRV_PCM_FMTBIT_S8 \| \
	309	SNDRV_PCM_FMTBIT_S16_LE \| \
	310	SNDRV_PCM_FMTBIT_S24_LE \| \
	311	SNDRV_PCM_FMTBIT_S32_LE)
912c2ac9	312
85e7652d	313	static const struct snd_soc_dai_ops bf5xx_i2s_dai_ops = {
8b5e2e39 LPC	314	.shutdown = bf5xx_i2s_shutdown,
	315	.hw_params = bf5xx_i2s_hw_params,
	316	.set_fmt = bf5xx_i2s_set_dai_fmt,
	317	.set_tdm_slot = bf5xx_i2s_set_tdm_slot,
	318	.set_channel_map = bf5xx_i2s_set_channel_map,
6335d055 EM	319	};
6335d055 EM	320
f0fba2ad	321	static struct snd_soc_dai_driver bf5xx_i2s_dai = {
8b5e2e39	322	.probe = bf5xx_i2s_dai_probe,
912c2ac9 CC	323	.suspend = bf5xx_i2s_suspend,
	324	.resume = bf5xx_i2s_resume,
	325	.playback = {
8b5e2e39 LPC	326	.channels_min = 2,
8b5e2e39 LPC	327	.channels_max = 8,
912c2ac9 CC	328	.rates = BF5XX_I2S_RATES,
	329	.formats = BF5XX_I2S_FORMATS,},
	330	.capture = {
8b5e2e39 LPC	331	.channels_min = 2,
8b5e2e39 LPC	332	.channels_max = 8,
912c2ac9 CC	333	.rates = BF5XX_I2S_RATES,
912c2ac9 CC	334	.formats = BF5XX_I2S_FORMATS,},
6335d055	335	.ops = &bf5xx_i2s_dai_ops,
912c2ac9	336	};
f0fba2ad	337
b56733bd KM	338	static const struct snd_soc_component_driver bf5xx_i2s_component = {
	339	.name = "bf5xx-i2s",
	340	};
	341
dca66dab	342	static int bf5xx_i2s_probe(struct platform_device *pdev)
f0fba2ad	343	{
2c66cb99 BS	344	struct sport_device *sport_handle;
	345	int ret;
	346
	347	/* configure SPORT for I2S */
8b5e2e39	348	sport_handle = sport_init(pdev, 4, 8 * sizeof(u32),
2c66cb99 BS	349	sizeof(struct bf5xx_i2s_port));
	350	if (!sport_handle)
	351	return -ENODEV;
	352
	353	/* register with the ASoC layers */
b56733bd KM	354	ret = snd_soc_register_component(&pdev->dev, &bf5xx_i2s_component,
b56733bd KM	355	&bf5xx_i2s_dai, 1);
2c66cb99	356	if (ret) {
b7ede5de	357	dev_err(&pdev->dev, "Failed to register DAI: %d\n", ret);
2c66cb99 BS	358	sport_done(sport_handle);
	359	return ret;
	360	}
	361
	362	return 0;
f0fba2ad LG	363	}
f0fba2ad LG	364
dca66dab	365	static int bf5xx_i2s_remove(struct platform_device *pdev)
f0fba2ad	366	{
2c66cb99 BS	367	struct sport_device *sport_handle = platform_get_drvdata(pdev);
2c66cb99 BS	368
b7ede5de	369	dev_dbg(&pdev->dev, "%s enter\n", __func__);
2c66cb99	370
b56733bd	371	snd_soc_unregister_component(&pdev->dev);
2c66cb99 BS	372	sport_done(sport_handle);
2c66cb99 BS	373
f0fba2ad LG	374	return 0;
	375	}
	376
	377	static struct platform_driver bfin_i2s_driver = {
2c66cb99	378	.probe = bf5xx_i2s_probe,
dca66dab	379	.remove = bf5xx_i2s_remove,
f0fba2ad	380	.driver = {
bfe4ee0a	381	.name = "bfin-i2s",
f0fba2ad LG	382	.owner = THIS_MODULE,
	383	},
	384	};
912c2ac9	385
fb80297e	386	module_platform_driver(bfin_i2s_driver);
3f4b783c	387
912c2ac9 CC	388	/* Module information */
	389	MODULE_AUTHOR("Cliff Cai");
	390	MODULE_DESCRIPTION("I2S driver for ADI Blackfin");
	391	MODULE_LICENSE("GPL");
	392