011f2c26f1
As usual these patches were extracted and rebased from the raspberry pi repo: https://github.com/raspberrypi/linux/tree/rpi-4.4.y Signed-off-by: Álvaro Fernández Rojas <noltari@gmail.com>
399 lines
12 KiB
Diff
399 lines
12 KiB
Diff
From 6fac57fc7d9e04a6f5083897b2f424cb3505dbf7 Mon Sep 17 00:00:00 2001
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From: DigitalDreamtime <clive.messer@digitaldreamtime.co.uk>
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Date: Thu, 30 Jun 2016 18:38:42 +0100
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Subject: [PATCH] Add IQAudIO Digi WM8804 board support
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Support IQAudIO Digi board with iqaudio_digi machine driver and
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iqaudio-digi-wm8804-audio overlay.
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NB. Machine driver is a cut and paste of hifiberry_digi code, with format
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and general cleanup to comply with kernel coding standards.
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Signed-off-by: DigitalDreamtime <clive.messer@digitaldreamtime.co.uk>
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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 | 9 +
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.../overlays/iqaudio-digi-wm8804-audio-overlay.dts | 47 ++++
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arch/arm/configs/bcm2709_defconfig | 1 +
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arch/arm/configs/bcmrpi_defconfig | 1 +
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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/iqaudio_digi.c | 239 +++++++++++++++++++++
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8 files changed, 307 insertions(+)
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create mode 100644 arch/arm/boot/dts/overlays/iqaudio-digi-wm8804-audio-overlay.dts
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create mode 100644 sound/soc/bcm/iqaudio_digi.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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@@ -42,6 +42,7 @@ dtbo-$(RPI_DT_OVERLAYS) += i2s-gpio28-31
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dtbo-$(RPI_DT_OVERLAYS) += i2s-mmap.dtbo
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dtbo-$(RPI_DT_OVERLAYS) += iqaudio-dac.dtbo
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dtbo-$(RPI_DT_OVERLAYS) += iqaudio-dacplus.dtbo
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+dtbo-$(RPI_DT_OVERLAYS) += iqaudio-digi-wm8804-audio.dtbo
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dtbo-$(RPI_DT_OVERLAYS) += justboom-dac.dtbo
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dtbo-$(RPI_DT_OVERLAYS) += justboom-digi.dtbo
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dtbo-$(RPI_DT_OVERLAYS) += lirc-rpi.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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@@ -546,6 +546,15 @@ Params: 24db_digital_gain Allow ga
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the DAC driver module loads.
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+Name: iqaudio-digi-wm8804-audio
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+Info: Configures the IQAudIO Digi WM8804 audio card
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+Load: dtoverlay=iqaudio-digi-wm8804-audio,<param>=<val>
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+Params: card_name Override the default, "IQAudIODigi", card name.
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+ dai_name Override the default, "IQAudIO Digi", dai name.
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+ dai_stream_name Override the default, "IQAudIO Digi HiFi",
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+ dai stream name.
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+
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+
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Name: justboom-dac
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Info: Configures the JustBoom DAC HAT, Amp HAT, DAC Zero and Amp Zero audio
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cards
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--- /dev/null
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+++ b/arch/arm/boot/dts/overlays/iqaudio-digi-wm8804-audio-overlay.dts
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@@ -0,0 +1,47 @@
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+// Definitions for IQAudIO Digi WM8804 audio board
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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,bcm2708";
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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 = <&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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+ wm8804@3b {
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+ #sound-dai-cells = <0>;
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+ compatible = "wlf,wm8804";
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+ reg = <0x3b>;
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+ status = "okay";
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+ // DVDD-supply = <®_3v3>;
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+ // PVDD-supply = <®_3v3>;
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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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+ wm8804_digi: __overlay__ {
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+ compatible = "iqaudio,wm8804-digi";
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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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+ __overrides__ {
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+ card_name = <&wm8804_digi>,"wm8804-digi,card-name";
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+ dai_name = <&wm8804_digi>,"wm8804-digi,dai-name";
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+ dai_stream_name = <&wm8804_digi>,"wm8804-digi,dai-stream-name";
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+ };
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+};
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--- a/arch/arm/configs/bcm2709_defconfig
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+++ b/arch/arm/configs/bcm2709_defconfig
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@@ -865,6 +865,7 @@ CONFIG_SND_BCM2708_SOC_RPI_PROTO=m
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CONFIG_SND_BCM2708_SOC_JUSTBOOM_DAC=m
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CONFIG_SND_BCM2708_SOC_JUSTBOOM_DIGI=m
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CONFIG_SND_BCM2708_SOC_IQAUDIO_DAC=m
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+CONFIG_SND_BCM2708_SOC_IQAUDIO_DIGI=m
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CONFIG_SND_BCM2708_SOC_RASPIDAC3=m
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CONFIG_SND_AUDIOINJECTOR_PI_SOUNDCARD=m
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CONFIG_SND_DIGIDAC1_SOUNDCARD=m
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--- a/arch/arm/configs/bcmrpi_defconfig
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+++ b/arch/arm/configs/bcmrpi_defconfig
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@@ -857,6 +857,7 @@ CONFIG_SND_BCM2708_SOC_RPI_PROTO=m
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CONFIG_SND_BCM2708_SOC_JUSTBOOM_DAC=m
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CONFIG_SND_BCM2708_SOC_JUSTBOOM_DIGI=m
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CONFIG_SND_BCM2708_SOC_IQAUDIO_DAC=m
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+CONFIG_SND_BCM2708_SOC_IQAUDIO_DIGI=m
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CONFIG_SND_BCM2708_SOC_RASPIDAC3=m
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CONFIG_SND_AUDIOINJECTOR_PI_SOUNDCARD=m
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CONFIG_SND_DIGIDAC1_SOUNDCARD=m
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--- a/sound/soc/bcm/Kconfig
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+++ b/sound/soc/bcm/Kconfig
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@@ -71,6 +71,13 @@ config SND_BCM2708_SOC_IQAUDIO_DAC
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help
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Say Y or M if you want to add support for IQaudIO-DAC.
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+config SND_BCM2708_SOC_IQAUDIO_DIGI
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+ tristate "Support for IQAudIO Digi"
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+ depends on SND_BCM2708_SOC_I2S || SND_BCM2835_SOC_I2S
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+ select SND_SOC_WM8804
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+ help
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+ Say Y or M if you want to add support for IQAudIO Digital IO board.
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+
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config SND_BCM2708_SOC_RASPIDAC3
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tristate "Support for RaspiDAC Rev.3x"
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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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@@ -14,6 +14,7 @@ snd-soc-justboom-digi-objs := justboom-d
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snd-soc-rpi-dac-objs := rpi-dac.o
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snd-soc-rpi-proto-objs := rpi-proto.o
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snd-soc-iqaudio-dac-objs := iqaudio-dac.o
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+snd-soc-iqaudio-digi-objs := iqaudio_digi.o
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snd-soc-raspidac3-objs := raspidac3.o
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snd-soc-audioinjector-pi-soundcard-objs := audioinjector-pi-soundcard.o
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snd-soc-digidac1-soundcard-objs := digidac1-soundcard.o
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@@ -28,6 +29,7 @@ obj-$(CONFIG_SND_BCM2708_SOC_JUSTBOOM_DI
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obj-$(CONFIG_SND_BCM2708_SOC_RPI_DAC) += snd-soc-rpi-dac.o
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obj-$(CONFIG_SND_BCM2708_SOC_RPI_PROTO) += snd-soc-rpi-proto.o
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obj-$(CONFIG_SND_BCM2708_SOC_IQAUDIO_DAC) += snd-soc-iqaudio-dac.o
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+obj-$(CONFIG_SND_BCM2708_SOC_IQAUDIO_DIGI) += snd-soc-iqaudio-digi.o
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obj-$(CONFIG_SND_BCM2708_SOC_RASPIDAC3) += snd-soc-raspidac3.o
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obj-$(CONFIG_SND_AUDIOINJECTOR_PI_SOUNDCARD) += snd-soc-audioinjector-pi-soundcard.o
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obj-$(CONFIG_SND_DIGIDAC1_SOUNDCARD) += snd-soc-digidac1-soundcard.o
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--- /dev/null
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+++ b/sound/soc/bcm/iqaudio_digi.c
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@@ -0,0 +1,239 @@
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+/*
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+ * ASoC Driver for IQAudIO WM8804 Digi
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+ *
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+ * Author: Daniel Matuschek <info@crazy-audio.com>
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+ * based on the HifiBerry DAC driver by Florian Meier <florian.meier@koalo.de>
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+ * Copyright 2013
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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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+#include "../codecs/wm8804.h"
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+
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+static short int auto_shutdown_output;
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+module_param(auto_shutdown_output, short,
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+ S_IRUSR | S_IWUSR | S_IRGRP | S_IWGRP);
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+MODULE_PARM_DESC(auto_shutdown_output, "Shutdown SP/DIF output if playback is stopped");
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+
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+static int snd_rpi_iqaudio_digi_init(struct snd_soc_pcm_runtime *rtd)
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+{
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+ struct snd_soc_codec *codec = rtd->codec;
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+
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+ /* enable TX output */
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+ snd_soc_update_bits(codec, WM8804_PWRDN, 0x4, 0x0);
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+
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+ return 0;
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+}
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+
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+static int snd_rpi_iqaudio_digi_startup(struct snd_pcm_substream *substream)
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+{
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+ struct snd_soc_pcm_runtime *rtd = substream->private_data;
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+ struct snd_soc_codec *codec = rtd->codec;
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+
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+ /* turn on digital output */
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+ snd_soc_update_bits(codec, WM8804_PWRDN, 0x3c, 0x00);
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+
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+ return 0;
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+}
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+
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+static void snd_rpi_iqaudio_digi_shutdown(struct snd_pcm_substream *substream)
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+{
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+ if (auto_shutdown_output) {
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+ struct snd_soc_pcm_runtime *rtd = substream->private_data;
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+ struct snd_soc_codec *codec = rtd->codec;
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+
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+ /* turn off digital output */
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+ snd_soc_update_bits(codec, WM8804_PWRDN, 0x3c, 0x3c);
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+ }
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+}
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+
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+
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+static int snd_rpi_iqaudio_digi_hw_params(struct snd_pcm_substream *substream,
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+ struct snd_pcm_hw_params *params)
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+{
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+ struct snd_soc_pcm_runtime *rtd = substream->private_data;
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+ struct snd_soc_dai *codec_dai = rtd->codec_dai;
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+ struct snd_soc_codec *codec = rtd->codec;
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+ struct snd_soc_dai *cpu_dai = rtd->cpu_dai;
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+
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+ int sysclk = 27000000; /* This is fixed on this board */
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+
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+ long mclk_freq = 0;
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+ int mclk_div = 1;
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+ int sampling_freq = 1;
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+
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+ int ret;
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+
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+ int samplerate = params_rate(params);
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+
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+ if (samplerate <= 96000) {
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+ mclk_freq = samplerate * 256;
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+ mclk_div = WM8804_MCLKDIV_256FS;
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+ } else {
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+ mclk_freq = samplerate * 128;
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+ mclk_div = WM8804_MCLKDIV_128FS;
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+ }
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+
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+ switch (samplerate) {
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+ case 32000:
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+ sampling_freq = 0x03;
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+ break;
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+ case 44100:
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+ sampling_freq = 0x00;
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+ break;
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+ case 48000:
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+ sampling_freq = 0x02;
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+ break;
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+ case 88200:
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+ sampling_freq = 0x08;
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+ break;
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+ case 96000:
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+ sampling_freq = 0x0a;
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+ break;
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+ case 176400:
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+ sampling_freq = 0x0c;
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+ break;
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+ case 192000:
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+ sampling_freq = 0x0e;
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+ break;
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+ default:
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+ dev_err(codec->dev, "Failed to set WM8804 SYSCLK, unsupported samplerate %d\n",
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+ samplerate);
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+ }
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+
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+ snd_soc_dai_set_clkdiv(codec_dai, WM8804_MCLK_DIV, mclk_div);
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+ snd_soc_dai_set_pll(codec_dai, 0, 0, sysclk, mclk_freq);
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+
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+ ret = snd_soc_dai_set_sysclk(codec_dai, WM8804_TX_CLKSRC_PLL,
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+ sysclk, SND_SOC_CLOCK_OUT);
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+ if (ret < 0) {
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+ dev_err(codec->dev, "Failed to set WM8804 SYSCLK: %d\n", ret);
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+ return ret;
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+ }
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+
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+ /* Enable TX output */
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+ snd_soc_update_bits(codec, WM8804_PWRDN, 0x4, 0x0);
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+
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+ /* Power on */
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+ snd_soc_update_bits(codec, WM8804_PWRDN, 0x9, 0);
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+
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+ /* set sampling frequency status bits */
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+ snd_soc_update_bits(codec, WM8804_SPDTX4, 0x0f, sampling_freq);
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+
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+ return snd_soc_dai_set_bclk_ratio(cpu_dai, 64);
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+}
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+
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+/* machine stream operations */
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+static struct snd_soc_ops snd_rpi_iqaudio_digi_ops = {
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+ .hw_params = snd_rpi_iqaudio_digi_hw_params,
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+ .startup = snd_rpi_iqaudio_digi_startup,
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+ .shutdown = snd_rpi_iqaudio_digi_shutdown,
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+};
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+
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+static struct snd_soc_dai_link snd_rpi_iqaudio_digi_dai[] = {
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+{
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+ .name = "IQAudIO Digi",
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+ .stream_name = "IQAudIO Digi HiFi",
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+ .cpu_dai_name = "bcm2708-i2s.0",
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+ .codec_dai_name = "wm8804-spdif",
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+ .platform_name = "bcm2708-i2s.0",
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+ .codec_name = "wm8804.1-003b",
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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_CBM_CFM,
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+ .ops = &snd_rpi_iqaudio_digi_ops,
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+ .init = snd_rpi_iqaudio_digi_init,
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+},
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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_iqaudio_digi = {
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+ .name = "IQAudIODigi",
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+ .owner = THIS_MODULE,
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+ .dai_link = snd_rpi_iqaudio_digi_dai,
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+ .num_links = ARRAY_SIZE(snd_rpi_iqaudio_digi_dai),
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+};
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+
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+static int snd_rpi_iqaudio_digi_probe(struct platform_device *pdev)
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+{
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+ struct snd_soc_card *card = &snd_rpi_iqaudio_digi;
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+ char *prefix = "wm8804-digi,";
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+ char prop[128];
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+ struct device_node *np;
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+ int ret = 0;
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+
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+ snd_rpi_iqaudio_digi.dev = &pdev->dev;
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+
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+ np = pdev->dev.of_node;
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+ if (np) {
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+ struct snd_soc_dai_link *dai = &snd_rpi_iqaudio_digi_dai[0];
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+ struct device_node *i2s_node;
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+
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+ i2s_node = of_parse_phandle(np, "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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+ snprintf(prop, sizeof(prop), "%scard-name", prefix);
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+ of_property_read_string(np, prop, &card->name);
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+
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+ snprintf(prop, sizeof(prop), "%sdai-name", prefix);
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+ of_property_read_string(np, prop, &dai->name);
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+
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+ snprintf(prop, sizeof(prop), "%sdai-stream-name", prefix);
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+ of_property_read_string(np, prop, &dai->stream_name);
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+ }
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+
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+ ret = snd_soc_register_card(card);
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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 int snd_rpi_iqaudio_digi_remove(struct platform_device *pdev)
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+{
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+ return snd_soc_unregister_card(&snd_rpi_iqaudio_digi);
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+}
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+
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+static const struct of_device_id snd_rpi_iqaudio_digi_of_match[] = {
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+ { .compatible = "iqaudio,wm8804-digi", },
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+ {},
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+};
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+MODULE_DEVICE_TABLE(of, snd_rpi_iqaudio_digi_of_match);
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+
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+static struct platform_driver snd_rpi_iqaudio_digi_driver = {
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+ .driver = {
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+ .name = "IQAudIODigi",
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+ .owner = THIS_MODULE,
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+ .of_match_table = snd_rpi_iqaudio_digi_of_match,
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+ },
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+ .probe = snd_rpi_iqaudio_digi_probe,
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+ .remove = snd_rpi_iqaudio_digi_remove,
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+};
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+
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+module_platform_driver(snd_rpi_iqaudio_digi_driver);
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+
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+MODULE_AUTHOR("Daniel Matuschek <info@crazy-audio.com>");
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+MODULE_DESCRIPTION("ASoC Driver for IQAudIO WM8804 Digi");
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+MODULE_LICENSE("GPL v2");
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