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138 lines
4.1 KiB
Diff
138 lines
4.1 KiB
Diff
From 12b182ee61ee6654c480f6643fcf818c6fe43e33 Mon Sep 17 00:00:00 2001
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From: DigitalDreamtime <clive.messer@digitaldreamtime.co.uk>
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Date: Sat, 2 Jul 2016 16:26:19 +0100
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Subject: [PATCH] Add support for Dion Audio LOCO DAC-AMP HAT
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Using dedicated machine driver and pcm5102a codec driver.
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Signed-off-by: DigitalDreamtime <clive.messer@digitaldreamtime.co.uk>
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ASoC: dionaudio_loco: use modern dai_link style
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Signed-off-by: Hui Wang <hui.wang@canonical.com>
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---
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sound/soc/bcm/dionaudio_loco.c | 117 +++++++++++++++++++++++++++++++++
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1 file changed, 117 insertions(+)
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create mode 100644 sound/soc/bcm/dionaudio_loco.c
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--- /dev/null
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+++ b/sound/soc/bcm/dionaudio_loco.c
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@@ -0,0 +1,117 @@
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+/*
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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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+
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+#include <linux/module.h>
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+#include <linux/platform_device.h>
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+
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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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+
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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 = rtd->cpu_dai;
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+
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+ unsigned int sample_bits =
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+ snd_pcm_format_physical_width(params_format(params));
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+
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+ return snd_soc_dai_set_bclk_ratio(cpu_dai, sample_bits * 2);
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+}
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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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+
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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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+
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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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+
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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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+
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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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+
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+ snd_rpi_dionaudio_loco.dev = &pdev->dev;
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+
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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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+
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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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+
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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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+
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+ return ret;
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+}
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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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+
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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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+
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+module_platform_driver(snd_rpi_dionaudio_loco_driver);
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+
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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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