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https://github.com/openwrt/openwrt.git
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f07e572f64
bcm2708: boot tested on RPi B+ v1.2 bcm2709: boot tested on RPi 3B v1.2 and RPi 4B v1.1 4G bcm2710: boot tested on RPi 3B v1.2 bcm2711: boot tested on RPi 4B v1.1 4G Signed-off-by: Álvaro Fernández Rojas <noltari@gmail.com>
324 lines
10 KiB
Diff
324 lines
10 KiB
Diff
From 5b37b08ff1c29e7386eb8a29b168e94e33cf82c3 Mon Sep 17 00:00:00 2001
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From: Matt Flax <flatmax@flatmax.org>
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Date: Wed, 8 Apr 2020 20:00:30 +1000
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Subject: [PATCH] Add support for the AudioInjector.net Isolated sound
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card
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This patch adds support for the Audio Injector Isolated sound card.
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Signed-off-by: Matt Flax <flatmax@flatmax.org>
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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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...dioinjector-isolated-soundcard-overlay.dts | 55 ++++++
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sound/soc/bcm/Kconfig | 7 +
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sound/soc/bcm/Makefile | 2 +
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.../bcm/audioinjector-isolated-soundcard.c | 183 ++++++++++++++++++
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11 files changed, 259 insertions(+), 5 deletions(-)
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create mode 100644 arch/arm/boot/dts/overlays/audioinjector-isolated-soundcard-overlay.dts
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create mode 100644 sound/soc/bcm/audioinjector-isolated-soundcard.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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@@ -22,6 +22,7 @@ dtbo-$(CONFIG_ARCH_BCM2835) += \
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applepi-dac.dtbo \
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at86rf233.dtbo \
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audioinjector-addons.dtbo \
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+ audioinjector-isolated-soundcard.dtbo \
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audioinjector-ultra.dtbo \
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audioinjector-wm8731-audio.dtbo \
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audiosense-pi.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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@@ -505,6 +505,12 @@ Params: non-stop-clocks Keeps th
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is paused or stopped (default off)
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+Name: audioinjector-isolated-soundcard
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+Info: Configures the audioinjector.net isolated soundcard
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+Load: dtoverlay=audioinjector-isolated-soundcard
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+Params: <None>
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+
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+
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Name: audioinjector-ultra
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Info: Configures the audioinjector.net ultra soundcard
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Load: dtoverlay=audioinjector-ultra
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--- /dev/null
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+++ b/arch/arm/boot/dts/overlays/audioinjector-isolated-soundcard-overlay.dts
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@@ -0,0 +1,55 @@
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+// Definitions for audioinjector.net audio isolated soundcard
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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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+ cs4272_mclk: codec-mclk {
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+ compatible = "fixed-clock";
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+ #clock-cells = <0>;
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+ clock-frequency = <24576000>;
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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 = <&i2c1>;
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+ __overlay__ {
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+ #address-cells = <1>;
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+ #size-cells = <0>;
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+ status = "okay";
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+
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+ cs4272: cs4271@10 {
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+ #sound-dai-cells = <0>;
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+ compatible = "cirrus,cs4271";
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+ reg = <0x10>;
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+ reset-gpio = <&gpio 5 0>;
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+ clocks = <&cs4272_mclk>;
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+ clock-names = "mclk";
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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@3 {
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+ target = <&sound>;
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+ snd: __overlay__ {
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+ compatible = "ai,audioinjector-isolated-soundcard";
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+ mute-gpios = <&gpio 17 0>;
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+ i2s-controller = <&i2s>;
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+ codec = <&cs4272>;
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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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@@ -192,6 +192,13 @@ config SND_AUDIOINJECTOR_OCTO_SOUNDCARD
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help
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Say Y or M if you want to add support for audioinjector.net octo add on
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+config SND_AUDIOINJECTOR_ISOLATED_SOUNDCARD
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+ tristate "Support for audioinjector.net isolated DAC and ADC soundcard"
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+ depends on SND_BCM2708_SOC_I2S || SND_BCM2835_SOC_I2S
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+ select SND_SOC_CS4271_I2C
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+ help
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+ Say Y or M if you want to add support for audioinjector.net isolated soundcard
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+
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config SND_AUDIOSENSE_PI
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tristate "Support for AudioSense Add-On Soundcard"
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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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@@ -27,6 +27,7 @@ snd-soc-iqaudio-dac-objs := iqaudio-dac.
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snd-soc-i-sabre-q2m-objs := i-sabre-q2m.o
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snd-soc-audioinjector-pi-soundcard-objs := audioinjector-pi-soundcard.o
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snd-soc-audioinjector-octo-soundcard-objs := audioinjector-octo-soundcard.o
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+snd-soc-audioinjector-isolated-soundcard-objs := audioinjector-isolated-soundcard.o
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snd-soc-audiosense-pi-objs := audiosense-pi.o
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snd-soc-digidac1-soundcard-objs := digidac1-soundcard.o
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snd-soc-dionaudio-loco-objs := dionaudio_loco.o
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@@ -55,6 +56,7 @@ obj-$(CONFIG_SND_BCM2708_SOC_IQAUDIO_DAC
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obj-$(CONFIG_SND_BCM2708_SOC_I_SABRE_Q2M) += snd-soc-i-sabre-q2m.o
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obj-$(CONFIG_SND_AUDIOINJECTOR_PI_SOUNDCARD) += snd-soc-audioinjector-pi-soundcard.o
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obj-$(CONFIG_SND_AUDIOINJECTOR_OCTO_SOUNDCARD) += snd-soc-audioinjector-octo-soundcard.o
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+obj-$(CONFIG_SND_AUDIOINJECTOR_ISOLATED_SOUNDCARD) += snd-soc-audioinjector-isolated-soundcard.o
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obj-$(CONFIG_SND_AUDIOSENSE_PI) += snd-soc-audiosense-pi.o
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obj-$(CONFIG_SND_DIGIDAC1_SOUNDCARD) += snd-soc-digidac1-soundcard.o
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obj-$(CONFIG_SND_BCM2708_SOC_DIONAUDIO_LOCO) += snd-soc-dionaudio-loco.o
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--- /dev/null
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+++ b/sound/soc/bcm/audioinjector-isolated-soundcard.c
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@@ -0,0 +1,183 @@
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+/*
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+ * ASoC Driver for AudioInjector.net isolated soundcard
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+ *
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+ * Created on: 20-February-2020
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+ * Author: flatmax@flatmax.org
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+ * based on audioinjector-octo-soundcard.c
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+ *
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+ * Copyright (C) 2020 Flatmax Pty. Ltd.
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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/types.h>
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+#include <linux/gpio/consumer.h>
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+
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+#include <sound/core.h>
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+#include <sound/soc.h>
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+#include <sound/pcm_params.h>
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+#include <sound/control.h>
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+
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+static struct gpio_desc *mute_gpio;
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+
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+static const unsigned int audioinjector_isolated_rates[] = {
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+ 192000, 96000, 48000, 32000, 24000, 16000, 8000
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+};
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+
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+static struct snd_pcm_hw_constraint_list audioinjector_isolated_constraints = {
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+ .list = audioinjector_isolated_rates,
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+ .count = ARRAY_SIZE(audioinjector_isolated_rates),
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+};
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+
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+static int audioinjector_isolated_dai_init(struct snd_soc_pcm_runtime *rtd)
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+{
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+ int ret=snd_soc_dai_set_sysclk(rtd->codec_dai, 0, 24576000, 0);
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+ if (ret)
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+ return ret;
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+
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+ return snd_soc_dai_set_bclk_ratio(rtd->cpu_dai, 64);
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+}
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+
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+static int audioinjector_isolated_startup(struct snd_pcm_substream *substream)
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+{
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+ snd_pcm_hw_constraint_list(substream->runtime, 0,
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+ SNDRV_PCM_HW_PARAM_RATE, &audioinjector_isolated_constraints);
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+
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+ return 0;
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+}
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+
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+static int audioinjector_isolated_trigger(struct snd_pcm_substream *substream,
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+ int cmd){
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+
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+ switch (cmd) {
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+ case SNDRV_PCM_TRIGGER_STOP:
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+ case SNDRV_PCM_TRIGGER_SUSPEND:
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+ case SNDRV_PCM_TRIGGER_PAUSE_PUSH:
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+ gpiod_set_value(mute_gpio, 0);
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+ break;
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+ case SNDRV_PCM_TRIGGER_START:
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+ case SNDRV_PCM_TRIGGER_RESUME:
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+ case SNDRV_PCM_TRIGGER_PAUSE_RELEASE:
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+ gpiod_set_value(mute_gpio, 1);
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+ break;
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+ default:
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+ return -EINVAL;
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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_ops audioinjector_isolated_ops = {
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+ .startup = audioinjector_isolated_startup,
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+ .trigger = audioinjector_isolated_trigger,
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+};
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+
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+SND_SOC_DAILINK_DEFS(audioinjector_isolated,
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+ DAILINK_COMP_ARRAY(COMP_CPU("bcm2708-i2s.0")),
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+ DAILINK_COMP_ARRAY(COMP_CODEC("cs4271.1-0010", "cs4271-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 audioinjector_isolated_dai[] = {
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+ {
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+ .name = "AudioInjector ISO",
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+ .stream_name = "AI-HIFI",
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+ .ops = &audioinjector_isolated_ops,
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+ .init = audioinjector_isolated_dai_init,
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+ .symmetric_rates = 1,
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+ .symmetric_channels = 1,
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+ .dai_fmt = SND_SOC_DAIFMT_CBM_CFM|SND_SOC_DAIFMT_I2S|SND_SOC_DAIFMT_NB_NF,
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+ SND_SOC_DAILINK_REG(audioinjector_isolated),
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+ }
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+};
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+
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+static const struct snd_soc_dapm_widget audioinjector_isolated_widgets[] = {
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+ SND_SOC_DAPM_OUTPUT("OUTPUTS"),
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+ SND_SOC_DAPM_INPUT("INPUTS"),
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+};
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+
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+static const struct snd_soc_dapm_route audioinjector_isolated_route[] = {
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+ /* Balanced outputs */
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+ {"OUTPUTS", NULL, "AOUTA+"},
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+ {"OUTPUTS", NULL, "AOUTA-"},
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+ {"OUTPUTS", NULL, "AOUTB+"},
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+ {"OUTPUTS", NULL, "AOUTB-"},
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+
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+ /* Balanced inputs */
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+ {"AINA", NULL, "INPUTS"},
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+ {"AINB", NULL, "INPUTS"},
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+};
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+
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+static struct snd_soc_card snd_soc_audioinjector_isolated = {
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+ .name = "audioinjector-isolated-soundcard",
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+ .dai_link = audioinjector_isolated_dai,
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+ .num_links = ARRAY_SIZE(audioinjector_isolated_dai),
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+
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+ .dapm_widgets = audioinjector_isolated_widgets,
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+ .num_dapm_widgets = ARRAY_SIZE(audioinjector_isolated_widgets),
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+ .dapm_routes = audioinjector_isolated_route,
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+ .num_dapm_routes = ARRAY_SIZE(audioinjector_isolated_route),
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+};
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+
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+static int audioinjector_isolated_probe(struct platform_device *pdev)
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+{
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+ struct snd_soc_card *card = &snd_soc_audioinjector_isolated;
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+ int ret;
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+
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+ card->dev = &pdev->dev;
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+
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+ if (pdev->dev.of_node) {
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+ struct snd_soc_dai_link *dai = &audioinjector_isolated_dai[0];
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+ struct device_node *i2s_node =
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+ of_parse_phandle(pdev->dev.of_node, "i2s-controller", 0);
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+
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+ if (i2s_node) {
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+ dai->cpus->dai_name = NULL;
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+ dai->cpus->of_node = i2s_node;
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+ dai->platforms->name = NULL;
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+ dai->platforms->of_node = i2s_node;
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+ } else {
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+ dev_err(&pdev->dev,
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+ "i2s-controller missing or invalid in DT\n");
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+ return -EINVAL;
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+ }
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+
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+ mute_gpio = devm_gpiod_get_optional(&pdev->dev, "mute", GPIOD_OUT_LOW);
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+ if (IS_ERR(mute_gpio)){
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+ dev_err(&pdev->dev, "mute gpio not found in dt overlay\n");
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+ return PTR_ERR(mute_gpio);
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+ }
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+ }
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+
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+ ret = devm_snd_soc_register_card(&pdev->dev, card);
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+ if (ret && ret != -EPROBE_DEFER)
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+ dev_err(&pdev->dev, "snd_soc_register_card failed (%d)\n", ret);
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+ return ret;
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+}
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+
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+static const struct of_device_id audioinjector_isolated_of_match[] = {
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+ { .compatible = "ai,audioinjector-isolated-soundcard", },
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+ {},
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+};
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+MODULE_DEVICE_TABLE(of, audioinjector_isolated_of_match);
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+
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+static struct platform_driver audioinjector_isolated_driver = {
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+ .driver = {
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+ .name = "audioinjector-isolated",
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+ .owner = THIS_MODULE,
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+ .of_match_table = audioinjector_isolated_of_match,
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+ },
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+ .probe = audioinjector_isolated_probe,
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+};
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+
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+module_platform_driver(audioinjector_isolated_driver);
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+MODULE_AUTHOR("Matt Flax <flatmax@flatmax.org>");
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+MODULE_DESCRIPTION("AudioInjector.net isolated Soundcard");
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+MODULE_LICENSE("GPL v2");
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+MODULE_ALIAS("platform:audioinjector-isolated-soundcard");
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