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118 lines
3.3 KiB
C
118 lines
3.3 KiB
C
/*
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* ASoC Driver for Dion Audio LOCO DAC-AMP
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*
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* Author: Miquel Blauw <info@dionaudio.nl>
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* Copyright 2016
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*
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* Based on the software of the RPi-DAC writen by Florian Meier
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*
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* This program is free software; you can redistribute it and/or
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* modify it under the terms of the GNU General Public License
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* version 2 as published by the Free Software Foundation.
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*
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* This program is distributed in the hope that it will be useful, but
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* WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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* General Public License for more details.
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*/
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#include <linux/module.h>
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#include <linux/platform_device.h>
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#include <sound/core.h>
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#include <sound/pcm.h>
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#include <sound/pcm_params.h>
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#include <sound/soc.h>
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#include <sound/jack.h>
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static int snd_rpi_dionaudio_loco_hw_params(
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struct snd_pcm_substream *substream, struct snd_pcm_hw_params *params)
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{
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struct snd_soc_pcm_runtime *rtd = substream->private_data;
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struct snd_soc_dai *cpu_dai = asoc_rtd_to_cpu(rtd, 0);
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unsigned int sample_bits =
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snd_pcm_format_physical_width(params_format(params));
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return snd_soc_dai_set_bclk_ratio(cpu_dai, sample_bits * 2);
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}
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/* machine stream operations */
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static struct snd_soc_ops snd_rpi_dionaudio_loco_ops = {
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.hw_params = snd_rpi_dionaudio_loco_hw_params,
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};
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SND_SOC_DAILINK_DEFS(dionaudio_loco,
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DAILINK_COMP_ARRAY(COMP_CPU("bcm2708-i2s.0")),
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DAILINK_COMP_ARRAY(COMP_CODEC("pcm5102a-codec", "pcm5102a-hifi")),
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DAILINK_COMP_ARRAY(COMP_PLATFORM("bcm2708-i2s.0")));
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static struct snd_soc_dai_link snd_rpi_dionaudio_loco_dai[] = {
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{
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.name = "DionAudio LOCO",
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.stream_name = "DionAudio LOCO DAC-AMP",
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.dai_fmt = SND_SOC_DAIFMT_I2S |
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SND_SOC_DAIFMT_NB_NF |
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SND_SOC_DAIFMT_CBS_CFS,
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.ops = &snd_rpi_dionaudio_loco_ops,
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SND_SOC_DAILINK_REG(dionaudio_loco),
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},
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};
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/* audio machine driver */
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static struct snd_soc_card snd_rpi_dionaudio_loco = {
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.name = "snd_rpi_dionaudio_loco",
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.dai_link = snd_rpi_dionaudio_loco_dai,
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.num_links = ARRAY_SIZE(snd_rpi_dionaudio_loco_dai),
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};
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static int snd_rpi_dionaudio_loco_probe(struct platform_device *pdev)
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{
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struct device_node *np;
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int ret = 0;
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snd_rpi_dionaudio_loco.dev = &pdev->dev;
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np = pdev->dev.of_node;
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if (np) {
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struct snd_soc_dai_link *dai = &snd_rpi_dionaudio_loco_dai[0];
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struct device_node *i2s_np;
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i2s_np = of_parse_phandle(np, "i2s-controller", 0);
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if (i2s_np) {
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dai->cpus->dai_name = NULL;
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dai->cpus->of_node = i2s_np;
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dai->platforms->name = NULL;
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dai->platforms->of_node = i2s_np;
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}
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}
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ret = devm_snd_soc_register_card(&pdev->dev, &snd_rpi_dionaudio_loco);
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if (ret && ret != -EPROBE_DEFER)
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dev_err(&pdev->dev, "snd_soc_register_card() failed: %d\n",
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ret);
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return ret;
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}
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static const struct of_device_id snd_rpi_dionaudio_loco_of_match[] = {
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{ .compatible = "dionaudio,loco-pcm5242-tpa3118", },
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{ /* sentinel */ },
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};
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MODULE_DEVICE_TABLE(of, snd_rpi_dionaudio_loco_of_match);
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static struct platform_driver snd_rpi_dionaudio_loco_driver = {
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.driver = {
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.name = "snd-dionaudio-loco",
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.owner = THIS_MODULE,
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.of_match_table = snd_rpi_dionaudio_loco_of_match,
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},
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.probe = snd_rpi_dionaudio_loco_probe,
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};
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module_platform_driver(snd_rpi_dionaudio_loco_driver);
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MODULE_AUTHOR("Miquel Blauw <info@dionaudio.nl>");
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MODULE_DESCRIPTION("ASoC Driver for DionAudio LOCO");
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MODULE_LICENSE("GPL v2");
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