[deliverable/linux.git] / sound / soc / codecs / si476x.c

/*
 * sound/soc/codecs/si476x.c -- Codec driver for SI476X chips
 *
 * Copyright (C) 2012 Innovative Converged Devices(ICD)
 * Copyright (C) 2013 Andrey Smirnov
 *
 * Author: Andrey Smirnov <andrew.smirnov@gmail.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; version 2 of the License.
 *
 * 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.
 *
 */

#include <linux/module.h>
#include <linux/slab.h>
#include <sound/pcm.h>
#include <sound/pcm_params.h>
#include <sound/soc.h>
#include <sound/initval.h>

#include <linux/i2c.h>

#include <linux/mfd/si476x-core.h>

enum si476x_audio_registers {
	SI476X_DIGITAL_IO_OUTPUT_FORMAT		= 0x0203,
	SI476X_DIGITAL_IO_OUTPUT_SAMPLE_RATE	= 0x0202,
};

enum si476x_digital_io_output_format {
	SI476X_DIGITAL_IO_SLOT_SIZE_SHIFT	= 11,
	SI476X_DIGITAL_IO_SAMPLE_SIZE_SHIFT	= 8,
};

#define SI476X_DIGITAL_IO_OUTPUT_WIDTH_MASK	((0x7 << SI476X_DIGITAL_IO_SLOT_SIZE_SHIFT) | \
						  (0x7 << SI476X_DIGITAL_IO_SAMPLE_SIZE_SHIFT))
#define SI476X_DIGITAL_IO_OUTPUT_FORMAT_MASK	(0x7e)

enum si476x_daudio_formats {
	SI476X_DAUDIO_MODE_I2S		= (0x0 << 1),
	SI476X_DAUDIO_MODE_DSP_A	= (0x6 << 1),
	SI476X_DAUDIO_MODE_DSP_B	= (0x7 << 1),
	SI476X_DAUDIO_MODE_LEFT_J	= (0x8 << 1),
	SI476X_DAUDIO_MODE_RIGHT_J	= (0x9 << 1),

	SI476X_DAUDIO_MODE_IB		= (1 << 5),
	SI476X_DAUDIO_MODE_IF		= (1 << 6),
};

enum si476x_pcm_format {
	SI476X_PCM_FORMAT_S8		= 2,
	SI476X_PCM_FORMAT_S16_LE	= 4,
	SI476X_PCM_FORMAT_S20_3LE	= 5,
	SI476X_PCM_FORMAT_S24_LE	= 6,
};

static const struct snd_soc_dapm_widget si476x_dapm_widgets[] = {
SND_SOC_DAPM_OUTPUT("LOUT"),
SND_SOC_DAPM_OUTPUT("ROUT"),
};

static const struct snd_soc_dapm_route si476x_dapm_routes[] = {
	{ "Capture", NULL, "LOUT" },
	{ "Capture", NULL, "ROUT" },
};

static int si476x_codec_set_dai_fmt(struct snd_soc_dai *codec_dai,
				    unsigned int fmt)
{
	struct si476x_core *core = i2c_mfd_cell_to_core(codec_dai->dev);
	int err;
	u16 format = 0;

	if ((fmt & SND_SOC_DAIFMT_MASTER_MASK) != SND_SOC_DAIFMT_CBS_CFS)
		return -EINVAL;

	switch (fmt & SND_SOC_DAIFMT_FORMAT_MASK) {
	case SND_SOC_DAIFMT_DSP_A:
		format |= SI476X_DAUDIO_MODE_DSP_A;
		break;
	case SND_SOC_DAIFMT_DSP_B:
		format |= SI476X_DAUDIO_MODE_DSP_B;
		break;
	case SND_SOC_DAIFMT_I2S:
		format |= SI476X_DAUDIO_MODE_I2S;
		break;
	case SND_SOC_DAIFMT_RIGHT_J:
		format |= SI476X_DAUDIO_MODE_RIGHT_J;
		break;
	case SND_SOC_DAIFMT_LEFT_J:
		format |= SI476X_DAUDIO_MODE_LEFT_J;
		break;
	default:
		return -EINVAL;
	}

	switch (fmt & SND_SOC_DAIFMT_FORMAT_MASK) {
	case SND_SOC_DAIFMT_DSP_A:
	case SND_SOC_DAIFMT_DSP_B:
		switch (fmt & SND_SOC_DAIFMT_INV_MASK) {
		case SND_SOC_DAIFMT_NB_NF:
			break;
		case SND_SOC_DAIFMT_IB_NF:
			format |= SI476X_DAUDIO_MODE_IB;
			break;
		default:
			return -EINVAL;
		}
		break;
	case SND_SOC_DAIFMT_I2S:
	case SND_SOC_DAIFMT_RIGHT_J:
	case SND_SOC_DAIFMT_LEFT_J:
		switch (fmt & SND_SOC_DAIFMT_INV_MASK) {
		case SND_SOC_DAIFMT_NB_NF:
			break;
		case SND_SOC_DAIFMT_IB_IF:
			format |= SI476X_DAUDIO_MODE_IB |
				SI476X_DAUDIO_MODE_IF;
			break;
		case SND_SOC_DAIFMT_IB_NF:
			format |= SI476X_DAUDIO_MODE_IB;
			break;
		case SND_SOC_DAIFMT_NB_IF:
			format |= SI476X_DAUDIO_MODE_IF;
			break;
		default:
			return -EINVAL;
		}
		break;
	default:
		return -EINVAL;
	}

	si476x_core_lock(core);

	err = snd_soc_update_bits(codec_dai->codec, SI476X_DIGITAL_IO_OUTPUT_FORMAT,
				  SI476X_DIGITAL_IO_OUTPUT_FORMAT_MASK,
				  format);

	si476x_core_unlock(core);

	if (err < 0) {
		dev_err(codec_dai->codec->dev, "Failed to set output format\n");
		return err;
	}

	return 0;
}

static int si476x_codec_hw_params(struct snd_pcm_substream *substream,
				  struct snd_pcm_hw_params *params,
				  struct snd_soc_dai *dai)
{
	struct si476x_core *core = i2c_mfd_cell_to_core(dai->dev);
	int rate, width, err;

	rate = params_rate(params);
	if (rate < 32000 || rate > 48000) {
		dev_err(dai->codec->dev, "Rate: %d is not supported\n", rate);
		return -EINVAL;
	}

	switch (params_format(params)) {
	case SNDRV_PCM_FORMAT_S8:
		width = SI476X_PCM_FORMAT_S8;
		break;
	case SNDRV_PCM_FORMAT_S16_LE:
		width = SI476X_PCM_FORMAT_S16_LE;
		break;
	case SNDRV_PCM_FORMAT_S20_3LE:
		width = SI476X_PCM_FORMAT_S20_3LE;
		break;
	case SNDRV_PCM_FORMAT_S24_LE:
		width = SI476X_PCM_FORMAT_S24_LE;
		break;
	default:
		return -EINVAL;
	}

	si476x_core_lock(core);

	err = snd_soc_write(dai->codec, SI476X_DIGITAL_IO_OUTPUT_SAMPLE_RATE,
			    rate);
	if (err < 0) {
		dev_err(dai->codec->dev, "Failed to set sample rate\n");
		goto out;
	}

	err = snd_soc_update_bits(dai->codec, SI476X_DIGITAL_IO_OUTPUT_FORMAT,
				  SI476X_DIGITAL_IO_OUTPUT_WIDTH_MASK,
				  (width << SI476X_DIGITAL_IO_SLOT_SIZE_SHIFT) |
				  (width << SI476X_DIGITAL_IO_SAMPLE_SIZE_SHIFT));
	if (err < 0) {
		dev_err(dai->codec->dev, "Failed to set output width\n");
		goto out;
	}

out:
	si476x_core_unlock(core);

	return err;
}

static int si476x_codec_probe(struct snd_soc_codec *codec)
{
	codec->control_data = dev_get_regmap(codec->dev->parent, NULL);
	return 0;
}

static struct snd_soc_dai_ops si476x_dai_ops = {
	.hw_params	= si476x_codec_hw_params,
	.set_fmt	= si476x_codec_set_dai_fmt,
};

static struct snd_soc_dai_driver si476x_dai = {
	.name		= "si476x-codec",
	.capture	= {
		.stream_name	= "Capture",
		.channels_min	= 2,
		.channels_max	= 2,

		.rates = SNDRV_PCM_RATE_32000 |
		SNDRV_PCM_RATE_44100 |
		SNDRV_PCM_RATE_48000,
		.formats = SNDRV_PCM_FMTBIT_S8 |
		SNDRV_PCM_FMTBIT_S16_LE |
		SNDRV_PCM_FMTBIT_S20_3LE |
		SNDRV_PCM_FMTBIT_S24_LE
	},
	.ops		= &si476x_dai_ops,
};

static struct snd_soc_codec_driver soc_codec_dev_si476x = {
	.probe  = si476x_codec_probe,
	.dapm_widgets = si476x_dapm_widgets,
	.num_dapm_widgets = ARRAY_SIZE(si476x_dapm_widgets),
	.dapm_routes = si476x_dapm_routes,
	.num_dapm_routes = ARRAY_SIZE(si476x_dapm_routes),
};

static int si476x_platform_probe(struct platform_device *pdev)
{
	return snd_soc_register_codec(&pdev->dev, &soc_codec_dev_si476x,
				      &si476x_dai, 1);
}

static int si476x_platform_remove(struct platform_device *pdev)
{
	snd_soc_unregister_codec(&pdev->dev);
	return 0;
}

MODULE_ALIAS("platform:si476x-codec");

static struct platform_driver si476x_platform_driver = {
	.driver		= {
		.name	= "si476x-codec",
		.owner	= THIS_MODULE,
	},
	.probe		= si476x_platform_probe,
	.remove		= si476x_platform_remove,
};
module_platform_driver(si476x_platform_driver);

MODULE_AUTHOR("Andrey Smirnov <andrew.smirnov@gmail.com>");
MODULE_DESCRIPTION("ASoC Si4761/64 codec driver");
MODULE_LICENSE("GPL");
Commit	Line	Data
06d7c133 AS	1	/*
	2	* sound/soc/codecs/si476x.c -- Codec driver for SI476X chips
	3	*
	4	* Copyright (C) 2012 Innovative Converged Devices(ICD)
	5	* Copyright (C) 2013 Andrey Smirnov
	6	*
	7	* Author: Andrey Smirnov <andrew.smirnov@gmail.com>
	8	*
	9	* This program is free software; you can redistribute it and/or modify
	10	* it under the terms of the GNU General Public License as published by
	11	* the Free Software Foundation; version 2 of the License.
	12	*
	13	* This program is distributed in the hope that it will be useful, but
	14	* WITHOUT ANY WARRANTY; without even the implied warranty of
	15	* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
	16	* General Public License for more details.
	17	*
	18	*/
	19
330345eb AS	20	#include <linux/module.h>
	21	#include <linux/slab.h>
	22	#include <sound/pcm.h>
	23	#include <sound/pcm_params.h>
	24	#include <sound/soc.h>
	25	#include <sound/initval.h>
	26
	27	#include <linux/i2c.h>
	28
	29	#include <linux/mfd/si476x-core.h>
	30
	31	enum si476x_audio_registers {
	32	SI476X_DIGITAL_IO_OUTPUT_FORMAT = 0x0203,
	33	SI476X_DIGITAL_IO_OUTPUT_SAMPLE_RATE = 0x0202,
	34	};
	35
	36	enum si476x_digital_io_output_format {
	37	SI476X_DIGITAL_IO_SLOT_SIZE_SHIFT = 11,
	38	SI476X_DIGITAL_IO_SAMPLE_SIZE_SHIFT = 8,
	39	};
	40
3b1f9f53 AM	41	#define SI476X_DIGITAL_IO_OUTPUT_WIDTH_MASK ((0x7 << SI476X_DIGITAL_IO_SLOT_SIZE_SHIFT) \| \
	42	(0x7 << SI476X_DIGITAL_IO_SAMPLE_SIZE_SHIFT))
	43	#define SI476X_DIGITAL_IO_OUTPUT_FORMAT_MASK (0x7e)
330345eb AS	44
	45	enum si476x_daudio_formats {
	46	SI476X_DAUDIO_MODE_I2S = (0x0 << 1),
	47	SI476X_DAUDIO_MODE_DSP_A = (0x6 << 1),
	48	SI476X_DAUDIO_MODE_DSP_B = (0x7 << 1),
	49	SI476X_DAUDIO_MODE_LEFT_J = (0x8 << 1),
	50	SI476X_DAUDIO_MODE_RIGHT_J = (0x9 << 1),
	51
	52	SI476X_DAUDIO_MODE_IB = (1 << 5),
	53	SI476X_DAUDIO_MODE_IF = (1 << 6),
	54	};
	55
	56	enum si476x_pcm_format {
	57	SI476X_PCM_FORMAT_S8 = 2,
	58	SI476X_PCM_FORMAT_S16_LE = 4,
	59	SI476X_PCM_FORMAT_S20_3LE = 5,
	60	SI476X_PCM_FORMAT_S24_LE = 6,
	61	};
	62
ac0b82b1 MB	63	static const struct snd_soc_dapm_widget si476x_dapm_widgets[] = {
	64	SND_SOC_DAPM_OUTPUT("LOUT"),
	65	SND_SOC_DAPM_OUTPUT("ROUT"),
	66	};
	67
	68	static const struct snd_soc_dapm_route si476x_dapm_routes[] = {
	69	{ "Capture", NULL, "LOUT" },
	70	{ "Capture", NULL, "ROUT" },
	71	};
	72
330345eb AS	73	static int si476x_codec_set_dai_fmt(struct snd_soc_dai *codec_dai,
	74	unsigned int fmt)
	75	{
cfcff69a	76	struct si476x_core *core = i2c_mfd_cell_to_core(codec_dai->dev);
330345eb AS	77	int err;
	78	u16 format = 0;
	79
	80	if ((fmt & SND_SOC_DAIFMT_MASTER_MASK) != SND_SOC_DAIFMT_CBS_CFS)
	81	return -EINVAL;
	82
	83	switch (fmt & SND_SOC_DAIFMT_FORMAT_MASK) {
	84	case SND_SOC_DAIFMT_DSP_A:
	85	format \|= SI476X_DAUDIO_MODE_DSP_A;
	86	break;
	87	case SND_SOC_DAIFMT_DSP_B:
	88	format \|= SI476X_DAUDIO_MODE_DSP_B;
	89	break;
	90	case SND_SOC_DAIFMT_I2S:
	91	format \|= SI476X_DAUDIO_MODE_I2S;
	92	break;
	93	case SND_SOC_DAIFMT_RIGHT_J:
	94	format \|= SI476X_DAUDIO_MODE_RIGHT_J;
	95	break;
	96	case SND_SOC_DAIFMT_LEFT_J:
	97	format \|= SI476X_DAUDIO_MODE_LEFT_J;
	98	break;
	99	default:
	100	return -EINVAL;
	101	}
	102
	103	switch (fmt & SND_SOC_DAIFMT_FORMAT_MASK) {
	104	case SND_SOC_DAIFMT_DSP_A:
	105	case SND_SOC_DAIFMT_DSP_B:
	106	switch (fmt & SND_SOC_DAIFMT_INV_MASK) {
	107	case SND_SOC_DAIFMT_NB_NF:
	108	break;
	109	case SND_SOC_DAIFMT_IB_NF:
	110	format \|= SI476X_DAUDIO_MODE_IB;
	111	break;
	112	default:
	113	return -EINVAL;
	114	}
	115	break;
	116	case SND_SOC_DAIFMT_I2S:
	117	case SND_SOC_DAIFMT_RIGHT_J:
	118	case SND_SOC_DAIFMT_LEFT_J:
	119	switch (fmt & SND_SOC_DAIFMT_INV_MASK) {
	120	case SND_SOC_DAIFMT_NB_NF:
	121	break;
	122	case SND_SOC_DAIFMT_IB_IF:
	123	format \|= SI476X_DAUDIO_MODE_IB \|
	124	SI476X_DAUDIO_MODE_IF;
	125	break;
	126	case SND_SOC_DAIFMT_IB_NF:
	127	format \|= SI476X_DAUDIO_MODE_IB;
	128	break;
	129	case SND_SOC_DAIFMT_NB_IF:
	130	format \|= SI476X_DAUDIO_MODE_IF;
	131	break;
	132	default:
	133	return -EINVAL;
	134	}
	135	break;
	136	default:
	137	return -EINVAL;
	138	}
	139
cfcff69a MB	140	si476x_core_lock(core);
cfcff69a MB	141
330345eb AS	142	err = snd_soc_update_bits(codec_dai->codec, SI476X_DIGITAL_IO_OUTPUT_FORMAT,
	143	SI476X_DIGITAL_IO_OUTPUT_FORMAT_MASK,
	144	format);
cfcff69a MB	145
	146	si476x_core_unlock(core);
	147
330345eb AS	148	if (err < 0) {
	149	dev_err(codec_dai->codec->dev, "Failed to set output format\n");
	150	return err;
	151	}
06d7c133	152
330345eb AS	153	return 0;
	154	}
	155
	156	static int si476x_codec_hw_params(struct snd_pcm_substream *substream,
	157	struct snd_pcm_hw_params *params,
	158	struct snd_soc_dai *dai)
	159	{
cfcff69a	160	struct si476x_core *core = i2c_mfd_cell_to_core(dai->dev);
330345eb AS	161	int rate, width, err;
	162
	163	rate = params_rate(params);
	164	if (rate < 32000 \|\| rate > 48000) {
	165	dev_err(dai->codec->dev, "Rate: %d is not supported\n", rate);
	166	return -EINVAL;
	167	}
	168
	169	switch (params_format(params)) {
	170	case SNDRV_PCM_FORMAT_S8:
	171	width = SI476X_PCM_FORMAT_S8;
4e38b745	172	break;
330345eb AS	173	case SNDRV_PCM_FORMAT_S16_LE:
	174	width = SI476X_PCM_FORMAT_S16_LE;
	175	break;
	176	case SNDRV_PCM_FORMAT_S20_3LE:
	177	width = SI476X_PCM_FORMAT_S20_3LE;
	178	break;
	179	case SNDRV_PCM_FORMAT_S24_LE:
	180	width = SI476X_PCM_FORMAT_S24_LE;
	181	break;
	182	default:
	183	return -EINVAL;
	184	}
	185
cfcff69a MB	186	si476x_core_lock(core);
cfcff69a MB	187
330345eb AS	188	err = snd_soc_write(dai->codec, SI476X_DIGITAL_IO_OUTPUT_SAMPLE_RATE,
	189	rate);
	190	if (err < 0) {
	191	dev_err(dai->codec->dev, "Failed to set sample rate\n");
cfcff69a	192	goto out;
330345eb AS	193	}
	194
	195	err = snd_soc_update_bits(dai->codec, SI476X_DIGITAL_IO_OUTPUT_FORMAT,
	196	SI476X_DIGITAL_IO_OUTPUT_WIDTH_MASK,
06d7c133	197	(width << SI476X_DIGITAL_IO_SLOT_SIZE_SHIFT) \|
330345eb AS	198	(width << SI476X_DIGITAL_IO_SAMPLE_SIZE_SHIFT));
	199	if (err < 0) {
	200	dev_err(dai->codec->dev, "Failed to set output width\n");
cfcff69a	201	goto out;
330345eb AS	202	}
330345eb AS	203
cfcff69a MB	204	out:
	205	si476x_core_unlock(core);
	206
	207	return err;
330345eb AS	208	}
	209
	210	static int si476x_codec_probe(struct snd_soc_codec *codec)
	211	{
d6173df3	212	codec->control_data = dev_get_regmap(codec->dev->parent, NULL);
330345eb AS	213	return 0;
	214	}
	215
	216	static struct snd_soc_dai_ops si476x_dai_ops = {
	217	.hw_params = si476x_codec_hw_params,
	218	.set_fmt = si476x_codec_set_dai_fmt,
	219	};
	220
	221	static struct snd_soc_dai_driver si476x_dai = {
	222	.name = "si476x-codec",
	223	.capture = {
	224	.stream_name = "Capture",
	225	.channels_min = 2,
	226	.channels_max = 2,
	227
	228	.rates = SNDRV_PCM_RATE_32000 \|
	229	SNDRV_PCM_RATE_44100 \|
	230	SNDRV_PCM_RATE_48000,
	231	.formats = SNDRV_PCM_FMTBIT_S8 \|
	232	SNDRV_PCM_FMTBIT_S16_LE \|
	233	SNDRV_PCM_FMTBIT_S20_3LE \|
	234	SNDRV_PCM_FMTBIT_S24_LE
	235	},
	236	.ops = &si476x_dai_ops,
	237	};
	238
	239	static struct snd_soc_codec_driver soc_codec_dev_si476x = {
	240	.probe = si476x_codec_probe,
ac0b82b1 MB	241	.dapm_widgets = si476x_dapm_widgets,
	242	.num_dapm_widgets = ARRAY_SIZE(si476x_dapm_widgets),
	243	.dapm_routes = si476x_dapm_routes,
	244	.num_dapm_routes = ARRAY_SIZE(si476x_dapm_routes),
330345eb AS	245	};
330345eb AS	246
7a79e94e	247	static int si476x_platform_probe(struct platform_device *pdev)
330345eb AS	248	{
	249	return snd_soc_register_codec(&pdev->dev, &soc_codec_dev_si476x,
	250	&si476x_dai, 1);
	251	}
	252
7a79e94e	253	static int si476x_platform_remove(struct platform_device *pdev)
330345eb AS	254	{
	255	snd_soc_unregister_codec(&pdev->dev);
	256	return 0;
	257	}
	258
	259	MODULE_ALIAS("platform:si476x-codec");
	260
	261	static struct platform_driver si476x_platform_driver = {
	262	.driver = {
	263	.name = "si476x-codec",
	264	.owner = THIS_MODULE,
	265	},
	266	.probe = si476x_platform_probe,
7a79e94e	267	.remove = si476x_platform_remove,
330345eb AS	268	};
	269	module_platform_driver(si476x_platform_driver);
	270
06d7c133	271	MODULE_AUTHOR("Andrey Smirnov <andrew.smirnov@gmail.com>");
330345eb AS	272	MODULE_DESCRIPTION("ASoC Si4761/64 codec driver");
330345eb AS	273	MODULE_LICENSE("GPL");