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From f0715f5e178f2f7c0afb719a3a35c8ac250b7586 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?J=C3=B6rg=20Schambacher?=
<j-schambacher@users.noreply.github.com>
Date: Thu, 12 Sep 2019 14:57:32 +0200
Subject: [PATCH] Add Hifiberry DAC+DSP soundcard driver (#3224)
Adds the driver for the Hifiberry DAC+DSP. It supports capture and
playback depending on the DSP firmware.
Signed-off-by: Joerg Schambacher <joerg@i2audio.com>
---
arch/arm/boot/dts/overlays/Makefile | 1 +
arch/arm/boot/dts/overlays/README | 6 ++
.../overlays/hifiberry-dacplusdsp-overlay.dts | 34 +++++++
sound/soc/bcm/Kconfig | 7 ++
sound/soc/bcm/Makefile | 2 +
sound/soc/bcm/hifiberry_dacplusdsp.c | 90 +++++++++++++++++++
sound/soc/bcm/rpi-simple-soundcard.c | 19 ++++
10 files changed, 162 insertions(+)
create mode 100644 arch/arm/boot/dts/overlays/hifiberry-dacplusdsp-overlay.dts
create mode 100644 sound/soc/bcm/hifiberry_dacplusdsp.c
--- a/arch/arm/boot/dts/overlays/Makefile
+++ b/arch/arm/boot/dts/overlays/Makefile
@@ -54,6 +54,7 @@ dtbo-$(CONFIG_ARCH_BCM2835) += \
hifiberry-dacplus.dtbo \
hifiberry-dacplusadc.dtbo \
hifiberry-dacplusadcpro.dtbo \
+ hifiberry-dacplusdsp.dtbo \
hifiberry-digi.dtbo \
hifiberry-digi-pro.dtbo \
hy28a.dtbo \
--- a/arch/arm/boot/dts/overlays/README
+++ b/arch/arm/boot/dts/overlays/README
@@ -904,6 +904,12 @@ Params: 24db_digital_gain Allow ga
master for bit clock and frame clock.
+Name: hifiberry-dacplusdsp
+Info: Configures the HifiBerry DAC+DSP audio card
+Load: dtoverlay=hifiberry-dacplusdsp
+Params: <None>
+
+
Name: hifiberry-digi
Info: Configures the HifiBerry Digi and Digi+ audio card
Load: dtoverlay=hifiberry-digi
--- /dev/null
+++ b/arch/arm/boot/dts/overlays/hifiberry-dacplusdsp-overlay.dts
@@ -0,0 +1,34 @@
+// Definitions for hifiberry DAC+DSP soundcard overlay
+/dts-v1/;
+/plugin/;
+
+/ {
+ compatible = "brcm,bcm2835";
+
+ fragment@0 {
+ target = <&i2s>;
+ __overlay__ {
+ status = "okay";
+ };
+ };
+
+ fragment@1 {
+ target-path = "/";
+ __overlay__ {
+ dacplusdsp-codec {
+ #sound-dai-cells = <0>;
+ compatible = "hifiberry,dacplusdsp";
+ status = "okay";
+ };
+ };
+ };
+
+ fragment@2 {
+ target = <&sound>;
+ __overlay__ {
+ compatible = "hifiberrydacplusdsp,hifiberrydacplusdsp-soundcard";
+ i2s-controller = <&i2s>;
+ status = "okay";
+ };
+ };
+};
--- a/sound/soc/bcm/Kconfig
+++ b/sound/soc/bcm/Kconfig
@@ -56,6 +56,13 @@ config SND_BCM2708_SOC_HIFIBERRY_DACPLUS
help
Say Y or M if you want to add support for HifiBerry DAC+ADC PRO.
+config SND_BCM2708_SOC_HIFIBERRY_DACPLUSDSP
+ tristate "Support for HifiBerry DAC+DSP"
+ depends on SND_BCM2708_SOC_I2S || SND_BCM2835_SOC_I2S
+ select SND_RPI_SIMPLE_SOUNDCARD
+ help
+ Say Y or M if you want to add support for HifiBerry DSP-DAC.
+
config SND_BCM2708_SOC_HIFIBERRY_DIGI
tristate "Support for HifiBerry Digi"
depends on SND_BCM2708_SOC_I2S || SND_BCM2835_SOC_I2S
--- a/sound/soc/bcm/Makefile
+++ b/sound/soc/bcm/Makefile
@@ -15,6 +15,7 @@ snd-soc-googlevoicehat-codec-objs := goo
snd-soc-hifiberry-dacplus-objs := hifiberry_dacplus.o
snd-soc-hifiberry-dacplusadc-objs := hifiberry_dacplusadc.o
snd-soc-hifiberry-dacplusadcpro-objs := hifiberry_dacplusadcpro.o
+snd-soc-hifiberry-dacplusdsp-objs := hifiberry_dacplusdsp.o
snd-soc-justboom-dac-objs := justboom-dac.o
snd-soc-rpi-cirrus-objs := rpi-cirrus.o
snd-soc-rpi-proto-objs := rpi-proto.o
@@ -40,6 +41,7 @@ obj-$(CONFIG_SND_BCM2708_SOC_GOOGLEVOICE
obj-$(CONFIG_SND_BCM2708_SOC_HIFIBERRY_DACPLUS) += snd-soc-hifiberry-dacplus.o
obj-$(CONFIG_SND_BCM2708_SOC_HIFIBERRY_DACPLUSADC) += snd-soc-hifiberry-dacplusadc.o
obj-$(CONFIG_SND_BCM2708_SOC_HIFIBERRY_DACPLUSADCPRO) += snd-soc-hifiberry-dacplusadcpro.o
+obj-$(CONFIG_SND_BCM2708_SOC_HIFIBERRY_DACPLUSDSP) += snd-soc-hifiberry-dacplusdsp.o
obj-$(CONFIG_SND_BCM2708_SOC_JUSTBOOM_DAC) += snd-soc-justboom-dac.o
obj-$(CONFIG_SND_BCM2708_SOC_RPI_CIRRUS) += snd-soc-rpi-cirrus.o
obj-$(CONFIG_SND_BCM2708_SOC_RPI_PROTO) += snd-soc-rpi-proto.o
--- /dev/null
+++ b/sound/soc/bcm/hifiberry_dacplusdsp.c
@@ -0,0 +1,90 @@
+// SPDX-License-Identifier: GPL-2.0
+/*
+ * ASoC Driver for HiFiBerry DAC + DSP
+ *
+ * Author: Joerg Schambacher <joscha@schambacher.com>
+ * Copyright 2018
+ *
+ * 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/init.h>
+#include <linux/module.h>
+#include <linux/of.h>
+#include <linux/platform_device.h>
+#include <sound/soc.h>
+
+static struct snd_soc_component_driver dacplusdsp_component_driver;
+
+static struct snd_soc_dai_driver dacplusdsp_dai = {
+ .name = "dacplusdsp-hifi",
+ .capture = {
+ .stream_name = "DAC+DSP Capture",
+ .channels_min = 2,
+ .channels_max = 2,
+ .rates = SNDRV_PCM_RATE_CONTINUOUS,
+ .formats = SNDRV_PCM_FMTBIT_S16_LE |
+ SNDRV_PCM_FMTBIT_S24_LE |
+ SNDRV_PCM_FMTBIT_S32_LE,
+ },
+ .playback = {
+ .stream_name = "DACP+DSP Playback",
+ .channels_min = 2,
+ .channels_max = 2,
+ .rates = SNDRV_PCM_RATE_CONTINUOUS,
+ .formats = SNDRV_PCM_FMTBIT_S16_LE |
+ SNDRV_PCM_FMTBIT_S24_LE |
+ SNDRV_PCM_FMTBIT_S32_LE,
+ },
+ .symmetric_rates = 1};
+
+#ifdef CONFIG_OF
+static const struct of_device_id dacplusdsp_ids[] = {
+ {
+ .compatible = "hifiberry,dacplusdsp",
+ },
+ {} };
+MODULE_DEVICE_TABLE(of, dacplusdsp_ids);
+#endif
+
+static int dacplusdsp_platform_probe(struct platform_device *pdev)
+{
+ int ret;
+
+ ret = snd_soc_register_component(&pdev->dev,
+ &dacplusdsp_component_driver, &dacplusdsp_dai, 1);
+ if (ret) {
+ pr_alert("snd_soc_register_component failed\n");
+ return ret;
+ }
+
+ return 0;
+}
+
+static int dacplusdsp_platform_remove(struct platform_device *pdev)
+{
+ snd_soc_unregister_component(&pdev->dev);
+ return 0;
+}
+
+static struct platform_driver dacplusdsp_driver = {
+ .driver = {
+ .name = "hifiberry-dacplusdsp-codec",
+ .of_match_table = of_match_ptr(dacplusdsp_ids),
+ },
+ .probe = dacplusdsp_platform_probe,
+ .remove = dacplusdsp_platform_remove,
+};
+
+module_platform_driver(dacplusdsp_driver);
+
+MODULE_AUTHOR("Joerg Schambacher <joerg@i2audio.com>");
+MODULE_DESCRIPTION("ASoC Driver for HiFiBerry DAC+DSP");
+MODULE_LICENSE("GPL v2");
--- a/sound/soc/bcm/rpi-simple-soundcard.c
+++ b/sound/soc/bcm/rpi-simple-soundcard.c
@@ -136,6 +136,23 @@ static struct snd_rpi_simple_drvdata drv
.dai = snd_googlevoicehat_soundcard_dai,
};
+static struct snd_soc_dai_link snd_hifiberrydacplusdsp_soundcard_dai[] = {
+{
+ .name = "Hifiberry DAC+DSP SoundCard",
+ .stream_name = "Hifiberry DAC+DSP SoundCard HiFi",
+ .codec_dai_name = "dacplusdsp-hifi",
+ .codec_name = "dacplusdsp-codec",
+ .dai_fmt = SND_SOC_DAIFMT_I2S |
+ SND_SOC_DAIFMT_NB_NF |
+ SND_SOC_DAIFMT_CBS_CFS,
+},
+};
+
+static struct snd_rpi_simple_drvdata drvdata_hifiberrydacplusdsp = {
+ .card_name = "snd_rpi_hifiberrydacplusdsp_soundcard",
+ .dai = snd_hifiberrydacplusdsp_soundcard_dai,
+};
+
static struct snd_soc_dai_link snd_hifiberry_amp_dai[] = {
{
.name = "HifiBerry AMP",
@@ -193,6 +210,8 @@ static const struct of_device_id snd_rpi
.data = (void *) &drvdata_adau1977 },
{ .compatible = "googlevoicehat,googlevoicehat-soundcard",
.data = (void *) &drvdata_googlevoicehat },
+ { .compatible = "hifiberrydacplusdsp,hifiberrydacplusdsp-soundcard",
+ .data = (void *) &drvdata_hifiberrydacplusdsp },
{ .compatible = "hifiberry,hifiberry-amp",
.data = (void *) &drvdata_hifiberry_amp },
{ .compatible = "hifiberry,hifiberry-dac",
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