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7d7aa2fd92
This change makes the names of Broadcom targets consistent by using the common notation based on SoC/CPU ID (which is used internally anyway), bcmXXXX instead of brcmXXXX. This is even used for target TITLE in make menuconfig already, only the short target name used brcm so far. Despite, since subtargets range from bcm2708 to bcm2711, it seems appropriate to use bcm27xx instead of bcm2708 (again, as already done for BOARDNAME). This also renames the packages brcm2708-userland and brcm2708-gpu-fw. Signed-off-by: Adrian Schmutzler <freifunk@adrianschmutzler.de> Acked-by: Álvaro Fernández Rojas <noltari@gmail.com>
139 lines
4.0 KiB
Diff
139 lines
4.0 KiB
Diff
From 858a3bbbf274ffcecca558f66aaab146c11fdfe9 Mon Sep 17 00:00:00 2001
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From: Miquel <miquelblauw@hotmail.com>
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Date: Fri, 24 Feb 2017 20:51:06 +0100
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Subject: [PATCH] sound: Support for Dion Audio LOCO-V2 DAC-AMP HAT
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Signed-off-by: Miquel Blauw <info@dionaudio.nl>
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ASoC: dionaudio_loco-v2: fix S24_LE format
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Remove set_bclk_ratio call so 24-bit data is transmitted in
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24 bclk cycles.
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Also remove hw_params and ops as they are no longer needed.
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Signed-off-by: Matthias Reichl <hias@horus.com>
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---
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sound/soc/bcm/dionaudio_loco-v2.c | 115 ++++++++++++++++++++++++++++++
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1 file changed, 115 insertions(+)
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create mode 100644 sound/soc/bcm/dionaudio_loco-v2.c
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--- /dev/null
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+++ b/sound/soc/bcm/dionaudio_loco-v2.c
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@@ -0,0 +1,115 @@
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+/*
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+ * ASoC Driver for Dion Audio LOCO-V2 DAC-AMP
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+ *
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+ * Author: Miquel Blauw <info@dionaudio.nl>
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+ * Copyright 2017
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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 bool digital_gain_0db_limit = true;
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+
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+static int snd_rpi_dionaudio_loco_v2_init(struct snd_soc_pcm_runtime *rtd)
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+{
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+ if (digital_gain_0db_limit) {
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+ int ret;
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+ struct snd_soc_card *card = rtd->card;
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+
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+ ret = snd_soc_limit_volume(card, "Digital Playback Volume", 207);
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+ if (ret < 0)
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+ dev_warn(card->dev, "Failed to set volume limit: %d\n", ret);
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+ }
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+
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+ return 0;
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+}
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+
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+static struct snd_soc_dai_link snd_rpi_dionaudio_loco_v2_dai[] = {
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+{
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+ .name = "DionAudio LOCO-V2",
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+ .stream_name = "DionAudio LOCO-V2 DAC-AMP",
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+ .cpu_dai_name = "bcm2708-i2s.0",
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+ .codec_dai_name = "pcm512x-hifi",
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+ .platform_name = "bcm2708-i2s.0",
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+ .codec_name = "pcm512x.1-004d",
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+ .dai_fmt = SND_SOC_DAIFMT_I2S | SND_SOC_DAIFMT_NB_NF |
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+ SND_SOC_DAIFMT_CBS_CFS,
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+ .init = snd_rpi_dionaudio_loco_v2_init,
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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_v2 = {
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+ .name = "Dion Audio LOCO-V2",
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+ .dai_link = snd_rpi_dionaudio_loco_v2_dai,
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+ .num_links = ARRAY_SIZE(snd_rpi_dionaudio_loco_v2_dai),
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+};
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+
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+static int snd_rpi_dionaudio_loco_v2_probe(struct platform_device *pdev)
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+{
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+ int ret = 0;
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+
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+ snd_rpi_dionaudio_loco_v2.dev = &pdev->dev;
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+
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+ if (pdev->dev.of_node) {
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+ struct device_node *i2s_node;
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+ struct snd_soc_dai_link *dai =
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+ &snd_rpi_dionaudio_loco_v2_dai[0];
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+
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+ i2s_node = of_parse_phandle(pdev->dev.of_node,
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+ "i2s-controller", 0);
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+ if (i2s_node) {
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+ dai->cpu_dai_name = NULL;
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+ dai->cpu_of_node = i2s_node;
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+ dai->platform_name = NULL;
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+ dai->platform_of_node = i2s_node;
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+ }
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+
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+ digital_gain_0db_limit = !of_property_read_bool(
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+ pdev->dev.of_node, "dionaudio,24db_digital_gain");
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+ }
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+
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+ ret = devm_snd_soc_register_card(&pdev->dev, &snd_rpi_dionaudio_loco_v2);
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+ if (ret)
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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 dionaudio_of_match[] = {
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+ { .compatible = "dionaudio,dionaudio-loco-v2", },
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+ {},
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+};
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+MODULE_DEVICE_TABLE(of, dionaudio_of_match);
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+
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+static struct platform_driver snd_rpi_dionaudio_loco_v2_driver = {
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+ .driver = {
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+ .name = "snd-rpi-dionaudio-loco-v2",
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+ .owner = THIS_MODULE,
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+ .of_match_table = dionaudio_of_match,
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+ },
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+ .probe = snd_rpi_dionaudio_loco_v2_probe,
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+};
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+
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+module_platform_driver(snd_rpi_dionaudio_loco_v2_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-V2");
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+MODULE_LICENSE("GPL v2");
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