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117 lines
3.3 KiB
117 lines
3.3 KiB
/* |
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* ASoC Driver for Dion Audio LOCO DAC-AMP |
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* |
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* Author: Miquel Blauw <[email protected]> |
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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 <[email protected]>"); |
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MODULE_DESCRIPTION("ASoC Driver for DionAudio LOCO"); |
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MODULE_LICENSE("GPL v2");
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