mirror of
https://github.com/openwrt/openwrt.git
synced 2024-12-26 17:01:14 +00:00
139 lines
4.0 KiB
Diff
139 lines
4.0 KiB
Diff
From 858a3bbbf274ffcecca558f66aaab146c11fdfe9 Mon Sep 17 00:00:00 2001
|
|
From: Miquel <miquelblauw@hotmail.com>
|
|
Date: Fri, 24 Feb 2017 20:51:06 +0100
|
|
Subject: [PATCH] sound: Support for Dion Audio LOCO-V2 DAC-AMP HAT
|
|
|
|
Signed-off-by: Miquel Blauw <info@dionaudio.nl>
|
|
|
|
ASoC: dionaudio_loco-v2: fix S24_LE format
|
|
|
|
Remove set_bclk_ratio call so 24-bit data is transmitted in
|
|
24 bclk cycles.
|
|
|
|
Also remove hw_params and ops as they are no longer needed.
|
|
|
|
Signed-off-by: Matthias Reichl <hias@horus.com>
|
|
---
|
|
sound/soc/bcm/dionaudio_loco-v2.c | 115 ++++++++++++++++++++++++++++++
|
|
1 file changed, 115 insertions(+)
|
|
create mode 100644 sound/soc/bcm/dionaudio_loco-v2.c
|
|
|
|
--- /dev/null
|
|
+++ b/sound/soc/bcm/dionaudio_loco-v2.c
|
|
@@ -0,0 +1,115 @@
|
|
+/*
|
|
+ * ASoC Driver for Dion Audio LOCO-V2 DAC-AMP
|
|
+ *
|
|
+ * Author: Miquel Blauw <info@dionaudio.nl>
|
|
+ * Copyright 2017
|
|
+ *
|
|
+ * 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 bool digital_gain_0db_limit = true;
|
|
+
|
|
+static int snd_rpi_dionaudio_loco_v2_init(struct snd_soc_pcm_runtime *rtd)
|
|
+{
|
|
+ if (digital_gain_0db_limit) {
|
|
+ int ret;
|
|
+ struct snd_soc_card *card = rtd->card;
|
|
+
|
|
+ ret = snd_soc_limit_volume(card, "Digital Playback Volume", 207);
|
|
+ if (ret < 0)
|
|
+ dev_warn(card->dev, "Failed to set volume limit: %d\n", ret);
|
|
+ }
|
|
+
|
|
+ return 0;
|
|
+}
|
|
+
|
|
+static struct snd_soc_dai_link snd_rpi_dionaudio_loco_v2_dai[] = {
|
|
+{
|
|
+ .name = "DionAudio LOCO-V2",
|
|
+ .stream_name = "DionAudio LOCO-V2 DAC-AMP",
|
|
+ .cpu_dai_name = "bcm2708-i2s.0",
|
|
+ .codec_dai_name = "pcm512x-hifi",
|
|
+ .platform_name = "bcm2708-i2s.0",
|
|
+ .codec_name = "pcm512x.1-004d",
|
|
+ .dai_fmt = SND_SOC_DAIFMT_I2S | SND_SOC_DAIFMT_NB_NF |
|
|
+ SND_SOC_DAIFMT_CBS_CFS,
|
|
+ .init = snd_rpi_dionaudio_loco_v2_init,
|
|
+},};
|
|
+
|
|
+/* audio machine driver */
|
|
+static struct snd_soc_card snd_rpi_dionaudio_loco_v2 = {
|
|
+ .name = "Dion Audio LOCO-V2",
|
|
+ .dai_link = snd_rpi_dionaudio_loco_v2_dai,
|
|
+ .num_links = ARRAY_SIZE(snd_rpi_dionaudio_loco_v2_dai),
|
|
+};
|
|
+
|
|
+static int snd_rpi_dionaudio_loco_v2_probe(struct platform_device *pdev)
|
|
+{
|
|
+ int ret = 0;
|
|
+
|
|
+ snd_rpi_dionaudio_loco_v2.dev = &pdev->dev;
|
|
+
|
|
+ if (pdev->dev.of_node) {
|
|
+ struct device_node *i2s_node;
|
|
+ struct snd_soc_dai_link *dai =
|
|
+ &snd_rpi_dionaudio_loco_v2_dai[0];
|
|
+
|
|
+ i2s_node = of_parse_phandle(pdev->dev.of_node,
|
|
+ "i2s-controller", 0);
|
|
+ if (i2s_node) {
|
|
+ dai->cpu_dai_name = NULL;
|
|
+ dai->cpu_of_node = i2s_node;
|
|
+ dai->platform_name = NULL;
|
|
+ dai->platform_of_node = i2s_node;
|
|
+ }
|
|
+
|
|
+ digital_gain_0db_limit = !of_property_read_bool(
|
|
+ pdev->dev.of_node, "dionaudio,24db_digital_gain");
|
|
+ }
|
|
+
|
|
+ ret = devm_snd_soc_register_card(&pdev->dev, &snd_rpi_dionaudio_loco_v2);
|
|
+ if (ret)
|
|
+ dev_err(&pdev->dev, "snd_soc_register_card() failed: %d\n",
|
|
+ ret);
|
|
+
|
|
+ return ret;
|
|
+}
|
|
+
|
|
+static const struct of_device_id dionaudio_of_match[] = {
|
|
+ { .compatible = "dionaudio,dionaudio-loco-v2", },
|
|
+ {},
|
|
+};
|
|
+MODULE_DEVICE_TABLE(of, dionaudio_of_match);
|
|
+
|
|
+static struct platform_driver snd_rpi_dionaudio_loco_v2_driver = {
|
|
+ .driver = {
|
|
+ .name = "snd-rpi-dionaudio-loco-v2",
|
|
+ .owner = THIS_MODULE,
|
|
+ .of_match_table = dionaudio_of_match,
|
|
+ },
|
|
+ .probe = snd_rpi_dionaudio_loco_v2_probe,
|
|
+};
|
|
+
|
|
+module_platform_driver(snd_rpi_dionaudio_loco_v2_driver);
|
|
+
|
|
+MODULE_AUTHOR("Miquel Blauw <info@dionaudio.nl>");
|
|
+MODULE_DESCRIPTION("ASoC Driver for DionAudio LOCO-V2");
|
|
+MODULE_LICENSE("GPL v2");
|