[mirror_ubuntu-zesty-kernel.git] / sound / soc / bcm / dionaudio_loco.c

/*
 * ASoC Driver for Dion Audio LOCO DAC-AMP
 *
 * Author:      Miquel Blauw <info@dionaudio.nl>
 *              Copyright 2016
 *
 * Based on the software of the RPi-DAC writen by Florian Meier
 *
 * 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.
 */

#include <linux/module.h>
#include <linux/platform_device.h>

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

static int snd_rpi_dionaudio_loco_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->cpu_dai;

	unsigned int sample_bits =
		snd_pcm_format_physical_width(params_format(params));

	return snd_soc_dai_set_bclk_ratio(cpu_dai, sample_bits * 2);
}

/* machine stream operations */
static struct snd_soc_ops snd_rpi_dionaudio_loco_ops = {
	.hw_params = snd_rpi_dionaudio_loco_hw_params,
};

static struct snd_soc_dai_link snd_rpi_dionaudio_loco_dai[] = {
{
	.name		= "DionAudio LOCO",
	.stream_name	= "DionAudio LOCO DAC-AMP",
	.cpu_dai_name	= "bcm2708-i2s.0",
	.codec_dai_name	= "pcm5102a-hifi",
	.platform_name	= "bcm2708-i2s.0",
	.codec_name	= "pcm5102a-codec",
	.dai_fmt	= SND_SOC_DAIFMT_I2S |
			  SND_SOC_DAIFMT_NB_NF |
			  SND_SOC_DAIFMT_CBS_CFS,
	.ops		= &snd_rpi_dionaudio_loco_ops,
},
};

/* audio machine driver */
static struct snd_soc_card snd_rpi_dionaudio_loco = {
	.name		= "snd_rpi_dionaudio_loco",
	.dai_link	= snd_rpi_dionaudio_loco_dai,
	.num_links	= ARRAY_SIZE(snd_rpi_dionaudio_loco_dai),
};

static int snd_rpi_dionaudio_loco_probe(struct platform_device *pdev)
{
	struct device_node *np;
	int ret = 0;

	snd_rpi_dionaudio_loco.dev = &pdev->dev;

	np = pdev->dev.of_node;
	if (np) {
		struct snd_soc_dai_link *dai = &snd_rpi_dionaudio_loco_dai[0];
		struct device_node *i2s_np;

		i2s_np = of_parse_phandle(np, "i2s-controller", 0);
		if (i2s_np) {
			dai->cpu_dai_name = NULL;
			dai->cpu_of_node = i2s_np;
			dai->platform_name = NULL;
			dai->platform_of_node = i2s_np;
		}
	}

	ret = snd_soc_register_card(&snd_rpi_dionaudio_loco);
	if (ret && ret != -EPROBE_DEFER)
		dev_err(&pdev->dev, "snd_soc_register_card() failed: %d\n",
			ret);

	return ret;
}

static int snd_rpi_dionaudio_loco_remove(struct platform_device *pdev)
{
	return snd_soc_unregister_card(&snd_rpi_dionaudio_loco);
}

static const struct of_device_id snd_rpi_dionaudio_loco_of_match[] = {
	{ .compatible = "dionaudio,loco-pcm5242-tpa3118", },
	{ /* sentinel */ },
};
MODULE_DEVICE_TABLE(of, snd_rpi_dionaudio_loco_of_match);

static struct platform_driver snd_rpi_dionaudio_loco_driver = {
	.driver = {
		.name		= "snd-dionaudio-loco",
		.owner		= THIS_MODULE,
		.of_match_table	= snd_rpi_dionaudio_loco_of_match,
	},
	.probe  = snd_rpi_dionaudio_loco_probe,
	.remove = snd_rpi_dionaudio_loco_remove,
};

module_platform_driver(snd_rpi_dionaudio_loco_driver);

MODULE_AUTHOR("Miquel Blauw <info@dionaudio.nl>");
MODULE_DESCRIPTION("ASoC Driver for DionAudio LOCO");
MODULE_LICENSE("GPL v2");
Commit	Line	Data
b9110a1c D	1	/*
	2	* ASoC Driver for Dion Audio LOCO DAC-AMP
	3	*
	4	* Author: Miquel Blauw <info@dionaudio.nl>
	5	* Copyright 2016
	6	*
	7	* Based on the software of the RPi-DAC writen by Florian Meier
	8	*
	9	* This program is free software; you can redistribute it and/or
	10	* modify it under the terms of the GNU General Public License
	11	* version 2 as published by the Free Software Foundation.
	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	#include <linux/module.h>
	20	#include <linux/platform_device.h>
	21
	22	#include <sound/core.h>
	23	#include <sound/pcm.h>
	24	#include <sound/pcm_params.h>
	25	#include <sound/soc.h>
	26	#include <sound/jack.h>
	27
	28	static int snd_rpi_dionaudio_loco_hw_params(
	29	struct snd_pcm_substream substream, struct snd_pcm_hw_params params)
	30	{
	31	struct snd_soc_pcm_runtime *rtd = substream->private_data;
	32	struct snd_soc_dai *cpu_dai = rtd->cpu_dai;
	33
	34	unsigned int sample_bits =
	35	snd_pcm_format_physical_width(params_format(params));
	36
	37	return snd_soc_dai_set_bclk_ratio(cpu_dai, sample_bits * 2);
	38	}
	39
	40	/* machine stream operations */
	41	static struct snd_soc_ops snd_rpi_dionaudio_loco_ops = {
	42	.hw_params = snd_rpi_dionaudio_loco_hw_params,
	43	};
	44
	45	static struct snd_soc_dai_link snd_rpi_dionaudio_loco_dai[] = {
	46	{
	47	.name = "DionAudio LOCO",
	48	.stream_name = "DionAudio LOCO DAC-AMP",
	49	.cpu_dai_name = "bcm2708-i2s.0",
	50	.codec_dai_name = "pcm5102a-hifi",
	51	.platform_name = "bcm2708-i2s.0",
	52	.codec_name = "pcm5102a-codec",
	53	.dai_fmt = SND_SOC_DAIFMT_I2S \|
	54	SND_SOC_DAIFMT_NB_NF \|
	55	SND_SOC_DAIFMT_CBS_CFS,
	56	.ops = &snd_rpi_dionaudio_loco_ops,
	57	},
	58	};
	59
	60	/* audio machine driver */
	61	static struct snd_soc_card snd_rpi_dionaudio_loco = {
	62	.name = "snd_rpi_dionaudio_loco",
	63	.dai_link = snd_rpi_dionaudio_loco_dai,
	64	.num_links = ARRAY_SIZE(snd_rpi_dionaudio_loco_dai),
65	};
66
67	static int snd_rpi_dionaudio_loco_probe(struct platform_device *pdev)
68	{
69	struct device_node *np;
70	int ret = 0;
71
72	snd_rpi_dionaudio_loco.dev = &pdev->dev;
73
74	np = pdev->dev.of_node;
75	if (np) {
76	struct snd_soc_dai_link *dai = &snd_rpi_dionaudio_loco_dai[0];
77	struct device_node *i2s_np;
78
79	i2s_np = of_parse_phandle(np, "i2s-controller", 0);
80	if (i2s_np) {
81	dai->cpu_dai_name = NULL;
82	dai->cpu_of_node = i2s_np;
83	dai->platform_name = NULL;
84	dai->platform_of_node = i2s_np;
85	}
86	}
87
88	ret = snd_soc_register_card(&snd_rpi_dionaudio_loco);
49dbf1af	89	if (ret && ret != -EPROBE_DEFER)
b9110a1c D	90	dev_err(&pdev->dev, "snd_soc_register_card() failed: %d\n",
	91	ret);
	92
	93	return ret;
	94	}
	95
	96	static int snd_rpi_dionaudio_loco_remove(struct platform_device *pdev)
	97	{
	98	return snd_soc_unregister_card(&snd_rpi_dionaudio_loco);
	99	}
	100
	101	static const struct of_device_id snd_rpi_dionaudio_loco_of_match[] = {
	102	{ .compatible = "dionaudio,loco-pcm5242-tpa3118", },
	103	{ /* sentinel */ },
	104	};
	105	MODULE_DEVICE_TABLE(of, snd_rpi_dionaudio_loco_of_match);
	106
	107	static struct platform_driver snd_rpi_dionaudio_loco_driver = {
	108	.driver = {
	109	.name = "snd-dionaudio-loco",
	110	.owner = THIS_MODULE,
	111	.of_match_table = snd_rpi_dionaudio_loco_of_match,
	112	},
	113	.probe = snd_rpi_dionaudio_loco_probe,
	114	.remove = snd_rpi_dionaudio_loco_remove,
	115	};
	116
	117	module_platform_driver(snd_rpi_dionaudio_loco_driver);
	118
	119	MODULE_AUTHOR("Miquel Blauw <info@dionaudio.nl>");
	120	MODULE_DESCRIPTION("ASoC Driver for DionAudio LOCO");
	121	MODULE_LICENSE("GPL v2");