[linux-2.6-block.git] / sound / soc / blackfin / bf6xx-i2s.c

/*
 * bf6xx-i2s.c - Analog Devices BF6XX i2s interface driver
 *
 * Copyright (c) 2012 Analog Devices Inc.
 *
 * 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.
 *
 * 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, write to the Free Software
 * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
 */

#include <linux/device.h>
#include <linux/init.h>
#include <linux/module.h>
#include <linux/platform_device.h>
#include <sound/pcm.h>
#include <sound/pcm_params.h>
#include <sound/soc.h>
#include <sound/soc-dai.h>

#include "bf6xx-sport.h"

struct sport_params param;

static int bfin_i2s_set_dai_fmt(struct snd_soc_dai *cpu_dai,
		unsigned int fmt)
{
	struct sport_device *sport = snd_soc_dai_get_drvdata(cpu_dai);
	struct device *dev = &sport->pdev->dev;
	int ret = 0;

	param.spctl &= ~(SPORT_CTL_OPMODE | SPORT_CTL_CKRE | SPORT_CTL_FSR
			| SPORT_CTL_LFS | SPORT_CTL_LAFS);
	switch (fmt & SND_SOC_DAIFMT_FORMAT_MASK) {
	case SND_SOC_DAIFMT_I2S:
		param.spctl |= SPORT_CTL_OPMODE | SPORT_CTL_CKRE
			| SPORT_CTL_LFS;
		break;
	case SND_SOC_DAIFMT_DSP_A:
		param.spctl |= SPORT_CTL_FSR;
		break;
	case SND_SOC_DAIFMT_LEFT_J:
		param.spctl |= SPORT_CTL_OPMODE | SPORT_CTL_LFS
			| SPORT_CTL_LAFS;
		break;
	default:
		dev_err(dev, "%s: Unknown DAI format type\n", __func__);
		ret = -EINVAL;
		break;
	}

	param.spctl &= ~(SPORT_CTL_ICLK | SPORT_CTL_IFS);
	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(dev, "%s: Unknown DAI master type\n", __func__);
		ret = -EINVAL;
		break;
	}

	return ret;
}

static int bfin_i2s_hw_params(struct snd_pcm_substream *substream,
				struct snd_pcm_hw_params *params,
				struct snd_soc_dai *dai)
{
	struct sport_device *sport = snd_soc_dai_get_drvdata(dai);
	struct device *dev = &sport->pdev->dev;
	int ret = 0;

	param.spctl &= ~SPORT_CTL_SLEN;
	switch (params_format(params)) {
	case SNDRV_PCM_FORMAT_S8:
		param.spctl |= 0x70;
		sport->wdsize = 1;
	case SNDRV_PCM_FORMAT_S16_LE:
		param.spctl |= 0xf0;
		sport->wdsize = 2;
		break;
	case SNDRV_PCM_FORMAT_S24_LE:
		param.spctl |= 0x170;
		sport->wdsize = 3;
		break;
	case SNDRV_PCM_FORMAT_S32_LE:
		param.spctl |= 0x1f0;
		sport->wdsize = 4;
		break;
	}

	if (substream->stream == SNDRV_PCM_STREAM_PLAYBACK) {
		ret = sport_set_tx_params(sport, &param);
		if (ret) {
			dev_err(dev, "SPORT tx is busy!\n");
			return ret;
		}
	} else {
		ret = sport_set_rx_params(sport, &param);
		if (ret) {
			dev_err(dev, "SPORT rx is busy!\n");
			return ret;
		}
	}
	return 0;
}

#ifdef CONFIG_PM
static int bfin_i2s_suspend(struct snd_soc_dai *dai)
{
	struct sport_device *sport = snd_soc_dai_get_drvdata(dai);

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

static int bfin_i2s_resume(struct snd_soc_dai *dai)
{
	struct sport_device *sport = snd_soc_dai_get_drvdata(dai);
	struct device *dev = &sport->pdev->dev;
	int ret;

	ret = sport_set_tx_params(sport, &param);
	if (ret) {
		dev_err(dev, "SPORT tx is busy!\n");
		return ret;
	}
	ret = sport_set_rx_params(sport, &param);
	if (ret) {
		dev_err(dev, "SPORT rx is busy!\n");
		return ret;
	}

	return 0;
}

#else
#define bfin_i2s_suspend NULL
#define bfin_i2s_resume NULL
#endif

#define BFIN_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 BFIN_I2S_FORMATS (SNDRV_PCM_FMTBIT_S8 | SNDRV_PCM_FMTBIT_S16_LE | \
		SNDRV_PCM_FMTBIT_S24_LE | SNDRV_PCM_FMTBIT_S32_LE)

static struct snd_soc_dai_ops bfin_i2s_dai_ops = {
	.hw_params	= bfin_i2s_hw_params,
	.set_fmt	= bfin_i2s_set_dai_fmt,
};

static struct snd_soc_dai_driver bfin_i2s_dai = {
	.suspend = bfin_i2s_suspend,
	.resume = bfin_i2s_resume,
	.playback = {
		.channels_min = 1,
		.channels_max = 2,
		.rates = BFIN_I2S_RATES,
		.formats = BFIN_I2S_FORMATS,
	},
	.capture = {
		.channels_min = 1,
		.channels_max = 2,
		.rates = BFIN_I2S_RATES,
		.formats = BFIN_I2S_FORMATS,
	},
	.ops = &bfin_i2s_dai_ops,
};

static int bfin_i2s_probe(struct platform_device *pdev)
{
	struct sport_device *sport;
	struct device *dev = &pdev->dev;
	int ret;

	sport = sport_create(pdev);
	if (!sport)
		return -ENODEV;

	/* register with the ASoC layers */
	ret = snd_soc_register_dai(dev, &bfin_i2s_dai);
	if (ret) {
		dev_err(dev, "Failed to register DAI: %d\n", ret);
		sport_delete(sport);
		return ret;
	}
	platform_set_drvdata(pdev, sport);

	return 0;
}

static int bfin_i2s_remove(struct platform_device *pdev)
{
	struct sport_device *sport = platform_get_drvdata(pdev);

	snd_soc_unregister_dai(&pdev->dev);
	sport_delete(sport);

	return 0;
}

static struct platform_driver bfin_i2s_driver = {
	.probe  = bfin_i2s_probe,
	.remove = bfin_i2s_remove,
	.driver = {
		.name = "bfin-i2s",
		.owner = THIS_MODULE,
	},
};

module_platform_driver(bfin_i2s_driver);

MODULE_DESCRIPTION("Analog Devices BF6XX i2s interface driver");
MODULE_AUTHOR("Scott Jiang <Scott.Jiang.Linux@gmail.com>");
MODULE_LICENSE("GPL v2");
Commit	Line	Data
f62ae7bd SJ	1	/*
	2	* bf6xx-i2s.c - Analog Devices BF6XX i2s interface driver
	3	*
	4	* Copyright (c) 2012 Analog Devices Inc.
	5	*
	6	* This program is free software; you can redistribute it and/or modify
	7	* it under the terms of the GNU General Public License version 2 as
	8	* published by the Free Software Foundation.
	9	*
	10	* This program is distributed in the hope that it will be useful,
	11	* but WITHOUT ANY WARRANTY; without even the implied warranty of
	12	* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
	13	* GNU General Public License for more details.
	14	*
	15	* You should have received a copy of the GNU General Public License
	16	* along with this program; if not, write to the Free Software
	17	* Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
	18	*/
	19
	20	#include <linux/device.h>
	21	#include <linux/init.h>
	22	#include <linux/module.h>
	23	#include <linux/platform_device.h>
	24	#include <sound/pcm.h>
	25	#include <sound/pcm_params.h>
	26	#include <sound/soc.h>
	27	#include <sound/soc-dai.h>
	28
	29	#include "bf6xx-sport.h"
	30
	31	struct sport_params param;
	32
	33	static int bfin_i2s_set_dai_fmt(struct snd_soc_dai *cpu_dai,
	34	unsigned int fmt)
	35	{
	36	struct sport_device *sport = snd_soc_dai_get_drvdata(cpu_dai);
	37	struct device *dev = &sport->pdev->dev;
	38	int ret = 0;
	39
	40	param.spctl &= ~(SPORT_CTL_OPMODE \| SPORT_CTL_CKRE \| SPORT_CTL_FSR
	41	\| SPORT_CTL_LFS \| SPORT_CTL_LAFS);
	42	switch (fmt & SND_SOC_DAIFMT_FORMAT_MASK) {
	43	case SND_SOC_DAIFMT_I2S:
	44	param.spctl \|= SPORT_CTL_OPMODE \| SPORT_CTL_CKRE
	45	\| SPORT_CTL_LFS;
	46	break;
	47	case SND_SOC_DAIFMT_DSP_A:
	48	param.spctl \|= SPORT_CTL_FSR;
	49	break;
	50	case SND_SOC_DAIFMT_LEFT_J:
	51	param.spctl \|= SPORT_CTL_OPMODE \| SPORT_CTL_LFS
	52	\| SPORT_CTL_LAFS;
	53	break;
	54	default:
	55	dev_err(dev, "%s: Unknown DAI format type\n", __func__);
	56	ret = -EINVAL;
	57	break;
	58	}
	59
	60	param.spctl &= ~(SPORT_CTL_ICLK \| SPORT_CTL_IFS);
	61	switch (fmt & SND_SOC_DAIFMT_MASTER_MASK) {
	62	case SND_SOC_DAIFMT_CBM_CFM:
	63	break;
	64	case SND_SOC_DAIFMT_CBS_CFS:
65	case SND_SOC_DAIFMT_CBM_CFS:
66	case SND_SOC_DAIFMT_CBS_CFM:
67	ret = -EINVAL;
68	break;
69	default:
70	dev_err(dev, "%s: Unknown DAI master type\n", __func__);
71	ret = -EINVAL;
72	break;
73	}
74
75	return ret;
76	}
77
78	static int bfin_i2s_hw_params(struct snd_pcm_substream *substream,
79	struct snd_pcm_hw_params *params,
80	struct snd_soc_dai *dai)
81	{
82	struct sport_device *sport = snd_soc_dai_get_drvdata(dai);
83	struct device *dev = &sport->pdev->dev;
84	int ret = 0;
85
86	param.spctl &= ~SPORT_CTL_SLEN;
87	switch (params_format(params)) {
88	case SNDRV_PCM_FORMAT_S8:
89	param.spctl \|= 0x70;
90	sport->wdsize = 1;
91	case SNDRV_PCM_FORMAT_S16_LE:
92	param.spctl \|= 0xf0;
93	sport->wdsize = 2;
94	break;
95	case SNDRV_PCM_FORMAT_S24_LE:
96	param.spctl \|= 0x170;
97	sport->wdsize = 3;
98	break;
99	case SNDRV_PCM_FORMAT_S32_LE:
100	param.spctl \|= 0x1f0;
101	sport->wdsize = 4;
102	break;
103	}
104
105	if (substream->stream == SNDRV_PCM_STREAM_PLAYBACK) {
106	ret = sport_set_tx_params(sport, &param);
107	if (ret) {
108	dev_err(dev, "SPORT tx is busy!\n");
109	return ret;
110	}
111	} else {
112	ret = sport_set_rx_params(sport, &param);
113	if (ret) {
114	dev_err(dev, "SPORT rx is busy!\n");
115	return ret;
116	}
117	}
118	return 0;
119	}
120
121	#ifdef CONFIG_PM
122	static int bfin_i2s_suspend(struct snd_soc_dai *dai)
123	{
124	struct sport_device *sport = snd_soc_dai_get_drvdata(dai);
125
126	if (dai->capture_active)
127	sport_rx_stop(sport);
128	if (dai->playback_active)
129	sport_tx_stop(sport);
130	return 0;
131	}
132
133	static int bfin_i2s_resume(struct snd_soc_dai *dai)
134	{
135	struct sport_device *sport = snd_soc_dai_get_drvdata(dai);
136	struct device *dev = &sport->pdev->dev;
137	int ret;
138
139	ret = sport_set_tx_params(sport, &param);
140	if (ret) {
141	dev_err(dev, "SPORT tx is busy!\n");
142	return ret;
143	}
144	ret = sport_set_rx_params(sport, &param);
145	if (ret) {
146	dev_err(dev, "SPORT rx is busy!\n");
147	return ret;
148	}
149
150	return 0;
151	}
152
153	#else
154	#define bfin_i2s_suspend NULL
155	#define bfin_i2s_resume NULL
156	#endif
157
158	#define BFIN_I2S_RATES (SNDRV_PCM_RATE_8000 \| SNDRV_PCM_RATE_11025 \|\
159	SNDRV_PCM_RATE_16000 \| SNDRV_PCM_RATE_22050 \| \
160	SNDRV_PCM_RATE_44100 \| SNDRV_PCM_RATE_48000 \| \
161	SNDRV_PCM_RATE_96000)
162
163	#define BFIN_I2S_FORMATS (SNDRV_PCM_FMTBIT_S8 \| SNDRV_PCM_FMTBIT_S16_LE \| \
164	SNDRV_PCM_FMTBIT_S24_LE \| SNDRV_PCM_FMTBIT_S32_LE)
165
166	static struct snd_soc_dai_ops bfin_i2s_dai_ops = {
167	.hw_params = bfin_i2s_hw_params,
168	.set_fmt = bfin_i2s_set_dai_fmt,
169	};
170
171	static struct snd_soc_dai_driver bfin_i2s_dai = {
172	.suspend = bfin_i2s_suspend,
173	.resume = bfin_i2s_resume,
174	.playback = {
175	.channels_min = 1,
176	.channels_max = 2,
177	.rates = BFIN_I2S_RATES,
178	.formats = BFIN_I2S_FORMATS,
179	},
180	.capture = {
181	.channels_min = 1,
182	.channels_max = 2,
183	.rates = BFIN_I2S_RATES,
184	.formats = BFIN_I2S_FORMATS,
185	},
186	.ops = &bfin_i2s_dai_ops,
187	};
188
dca66dab	189	static int bfin_i2s_probe(struct platform_device *pdev)
f62ae7bd SJ	190	{
	191	struct sport_device *sport;
	192	struct device *dev = &pdev->dev;
	193	int ret;
	194
	195	sport = sport_create(pdev);
	196	if (!sport)
	197	return -ENODEV;
	198
	199	/* register with the ASoC layers */
	200	ret = snd_soc_register_dai(dev, &bfin_i2s_dai);
	201	if (ret) {
	202	dev_err(dev, "Failed to register DAI: %d\n", ret);
	203	sport_delete(sport);
	204	return ret;
	205	}
	206	platform_set_drvdata(pdev, sport);
	207
	208	return 0;
	209	}
	210
dca66dab	211	static int bfin_i2s_remove(struct platform_device *pdev)
f62ae7bd SJ	212	{
	213	struct sport_device *sport = platform_get_drvdata(pdev);
	214
	215	snd_soc_unregister_dai(&pdev->dev);
	216	sport_delete(sport);
	217
	218	return 0;
	219	}
	220
	221	static struct platform_driver bfin_i2s_driver = {
	222	.probe = bfin_i2s_probe,
dca66dab	223	.remove = bfin_i2s_remove,
f62ae7bd SJ	224	.driver = {
	225	.name = "bfin-i2s",
	226	.owner = THIS_MODULE,
	227	},
	228	};
	229
	230	module_platform_driver(bfin_i2s_driver);
	231
	232	MODULE_DESCRIPTION("Analog Devices BF6XX i2s interface driver");
	233	MODULE_AUTHOR("Scott Jiang <Scott.Jiang.Linux@gmail.com>");
	234	MODULE_LICENSE("GPL v2");