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