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path: root/target/linux/brcm2708/patches-4.9/950-0190-sound-Support-for-Dion-Audio-LOCO-V2-DAC-AMP-HAT.patch
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Diffstat (limited to 'target/linux/brcm2708/patches-4.9/950-0190-sound-Support-for-Dion-Audio-LOCO-V2-DAC-AMP-HAT.patch')
-rw-r--r--target/linux/brcm2708/patches-4.9/950-0190-sound-Support-for-Dion-Audio-LOCO-V2-DAC-AMP-HAT.patch251
1 files changed, 251 insertions, 0 deletions
diff --git a/target/linux/brcm2708/patches-4.9/950-0190-sound-Support-for-Dion-Audio-LOCO-V2-DAC-AMP-HAT.patch b/target/linux/brcm2708/patches-4.9/950-0190-sound-Support-for-Dion-Audio-LOCO-V2-DAC-AMP-HAT.patch
new file mode 100644
index 0000000..eb6422a
--- /dev/null
+++ b/target/linux/brcm2708/patches-4.9/950-0190-sound-Support-for-Dion-Audio-LOCO-V2-DAC-AMP-HAT.patch
@@ -0,0 +1,251 @@
+From a20dbe4972ea3df27f24c5397102e1346462a4f4 Mon Sep 17 00:00:00 2001
+From: Miquel <miquelblauw@hotmail.com>
+Date: Fri, 24 Feb 2017 20:51:06 +0100
+Subject: [PATCH] sound: Support for Dion Audio LOCO-V2 DAC-AMP HAT
+
+Signed-off-by: Miquel Blauw <info@dionaudio.nl>
+---
+ arch/arm/boot/dts/overlays/Makefile | 1 +
+ arch/arm/boot/dts/overlays/README | 19 +++++
+ arch/arm/configs/bcm2709_defconfig | 1 +
+ arch/arm/configs/bcmrpi_defconfig | 1 +
+ sound/soc/bcm/Kconfig | 7 ++
+ sound/soc/bcm/Makefile | 2 +
+ sound/soc/bcm/dionaudio_loco-v2.c | 140 ++++++++++++++++++++++++++++++++++++
+ 7 files changed, 171 insertions(+)
+ create mode 100644 sound/soc/bcm/dionaudio_loco-v2.c
+
+--- a/arch/arm/boot/dts/overlays/Makefile
++++ b/arch/arm/boot/dts/overlays/Makefile
+@@ -13,6 +13,7 @@ dtbo-$(CONFIG_ARCH_BCM2835) += \
+ bmp085_i2c-sensor.dtbo \
+ dht11.dtbo \
+ dionaudio-loco.dtbo \
++ dionaudio-loco-v2.dtbo \
+ dpi18.dtbo \
+ dpi24.dtbo \
+ dwc-otg.dtbo \
+--- a/arch/arm/boot/dts/overlays/README
++++ b/arch/arm/boot/dts/overlays/README
+@@ -308,6 +308,25 @@ Load: dtoverlay=dionaudio-loco
+ Params: <None>
+
+
++Name: dionaudio-loco-v2
++Info: Configures the Dion Audio LOCO-V2 DAC-AMP
++Load: dtoverlay=dionaudio-loco-v2,<param>=<val>
++Params: 24db_digital_gain Allow gain to be applied via the PCM512x codec
++ Digital volume control. Enable with
++ "dtoverlay=hifiberry-dacplus,24db_digital_gain"
++ (The default behaviour is that the Digital
++ volume control is limited to a maximum of
++ 0dB. ie. it can attenuate but not provide
++ gain. For most users, this will be desired
++ as it will prevent clipping. By appending
++ the 24dB_digital_gain parameter, the Digital
++ volume control will allow up to 24dB of
++ gain. If this parameter is enabled, it is the
++ responsibility of the user to ensure that
++ the Digital volume control is set to a value
++ that does not result in clipping/distortion!)
++
++
+ Name: dpi18
+ Info: Overlay for a generic 18-bit DPI display
+ This uses GPIOs 0-21 (so no I2C, uart etc.), and activates the output
+--- a/arch/arm/configs/bcm2709_defconfig
++++ b/arch/arm/configs/bcm2709_defconfig
+@@ -889,6 +889,7 @@ CONFIG_SND_BCM2708_SOC_ADAU1977_ADC=m
+ CONFIG_SND_AUDIOINJECTOR_PI_SOUNDCARD=m
+ CONFIG_SND_DIGIDAC1_SOUNDCARD=m
+ CONFIG_SND_BCM2708_SOC_DIONAUDIO_LOCO=m
++CONFIG_SND_BCM2708_SOC_DIONAUDIO_LOCO_V2=m
+ CONFIG_SND_BCM2708_SOC_ALLO_PIANO_DAC=m
+ CONFIG_SND_PISOUND=m
+ CONFIG_SND_SOC_ADAU1701=m
+--- a/arch/arm/configs/bcmrpi_defconfig
++++ b/arch/arm/configs/bcmrpi_defconfig
+@@ -883,6 +883,7 @@ CONFIG_SND_BCM2708_SOC_ADAU1977_ADC=m
+ CONFIG_SND_AUDIOINJECTOR_PI_SOUNDCARD=m
+ CONFIG_SND_DIGIDAC1_SOUNDCARD=m
+ CONFIG_SND_BCM2708_SOC_DIONAUDIO_LOCO=m
++CONFIG_SND_BCM2708_SOC_DIONAUDIO_LOCO_V2=m
+ CONFIG_SND_BCM2708_SOC_ALLO_PIANO_DAC=m
+ CONFIG_SND_PISOUND=m
+ CONFIG_SND_SOC_ADAU1701=m
+--- a/sound/soc/bcm/Kconfig
++++ b/sound/soc/bcm/Kconfig
+@@ -133,6 +133,13 @@ config SND_BCM2708_SOC_DIONAUDIO_LOCO
+ help
+ Say Y or M if you want to add support for Dion Audio LOCO.
+
++config SND_BCM2708_SOC_DIONAUDIO_LOCO_V2
++ tristate "Support for Dion Audio LOCO-V2 DAC-AMP"
++ depends on SND_BCM2708_SOC_I2S || SND_BCM2835_SOC_I2S
++ select SND_SOC_PCM5122
++ help
++ Say Y or M if you want to add support for Dion Audio LOCO-V2.
++
+ config SND_BCM2708_SOC_ALLO_PIANO_DAC
+ tristate "Support for Allo Piano DAC"
+ depends on SND_BCM2708_SOC_I2S || SND_BCM2835_SOC_I2S
+--- a/sound/soc/bcm/Makefile
++++ b/sound/soc/bcm/Makefile
+@@ -25,6 +25,7 @@ snd-soc-raspidac3-objs := raspidac3.o
+ snd-soc-audioinjector-pi-soundcard-objs := audioinjector-pi-soundcard.o
+ snd-soc-digidac1-soundcard-objs := digidac1-soundcard.o
+ snd-soc-dionaudio-loco-objs := dionaudio_loco.o
++snd-soc-dionaudio-loco-v2-objs := dionaudio_loco-v2.o
+ snd-soc-allo-piano-dac-objs := allo-piano-dac.o
+ snd-soc-pisound-objs := pisound.o
+
+@@ -44,5 +45,6 @@ obj-$(CONFIG_SND_BCM2708_SOC_RASPIDAC3)
+ obj-$(CONFIG_SND_AUDIOINJECTOR_PI_SOUNDCARD) += snd-soc-audioinjector-pi-soundcard.o
+ obj-$(CONFIG_SND_DIGIDAC1_SOUNDCARD) += snd-soc-digidac1-soundcard.o
+ obj-$(CONFIG_SND_BCM2708_SOC_DIONAUDIO_LOCO) += snd-soc-dionaudio-loco.o
++obj-$(CONFIG_SND_BCM2708_SOC_DIONAUDIO_LOCO_V2) += snd-soc-dionaudio-loco-v2.o
+ obj-$(CONFIG_SND_BCM2708_SOC_ALLO_PIANO_DAC) += snd-soc-allo-piano-dac.o
+ obj-$(CONFIG_SND_PISOUND) += snd-soc-pisound.o
+--- /dev/null
++++ b/sound/soc/bcm/dionaudio_loco-v2.c
+@@ -0,0 +1,140 @@
++/*
++ * ASoC Driver for Dion Audio LOCO-V2 DAC-AMP
++ *
++ * Author: Miquel Blauw <info@dionaudio.nl>
++ * Copyright 2017
++ *
++ * Based on the software of the RPi-DAC writen by Florian Meier
++ *
++ * 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/module.h>
++#include <linux/platform_device.h>
++
++#include <sound/core.h>
++#include <sound/pcm.h>
++#include <sound/pcm_params.h>
++#include <sound/soc.h>
++#include <sound/jack.h>
++
++static bool digital_gain_0db_limit = true;
++
++static int snd_rpi_dionaudio_loco_v2_init(struct snd_soc_pcm_runtime *rtd)
++{
++ if (digital_gain_0db_limit) {
++ int ret;
++ struct snd_soc_card *card = rtd->card;
++
++ ret = snd_soc_limit_volume(card, "Digital Playback Volume", 207);
++ if (ret < 0)
++ dev_warn(card->dev, "Failed to set volume limit: %d\n", ret);
++ }
++
++ return 0;
++}
++
++static int snd_rpi_dionaudio_loco_v2_hw_params(
++ struct snd_pcm_substream *substream,
++ struct snd_pcm_hw_params *params)
++{
++ struct snd_soc_pcm_runtime *rtd = substream->private_data;
++ struct snd_soc_dai *cpu_dai = rtd->cpu_dai;
++
++ unsigned int sample_bits =
++ snd_pcm_format_physical_width(params_format(params));
++
++ return snd_soc_dai_set_bclk_ratio(cpu_dai, sample_bits * 2);
++}
++
++/* machine stream operations */
++static struct snd_soc_ops snd_rpi_dionaudio_loco_v2_ops = {
++ .hw_params = snd_rpi_dionaudio_loco_v2_hw_params,
++};
++
++static struct snd_soc_dai_link snd_rpi_dionaudio_loco_v2_dai[] = {
++{
++ .name = "DionAudio LOCO-V2",
++ .stream_name = "DionAudio LOCO-V2 DAC-AMP",
++ .cpu_dai_name = "bcm2708-i2s.0",
++ .codec_dai_name = "pcm512x-hifi",
++ .platform_name = "bcm2708-i2s.0",
++ .codec_name = "pcm512x.1-004d",
++ .dai_fmt = SND_SOC_DAIFMT_I2S | SND_SOC_DAIFMT_NB_NF |
++ SND_SOC_DAIFMT_CBS_CFS,
++ .ops = &snd_rpi_dionaudio_loco_v2_ops,
++ .init = snd_rpi_dionaudio_loco_v2_init,
++},};
++
++/* audio machine driver */
++static struct snd_soc_card snd_rpi_dionaudio_loco_v2 = {
++ .name = "Dion Audio LOCO-V2",
++ .dai_link = snd_rpi_dionaudio_loco_v2_dai,
++ .num_links = ARRAY_SIZE(snd_rpi_dionaudio_loco_v2_dai),
++};
++
++static int snd_rpi_dionaudio_loco_v2_probe(struct platform_device *pdev)
++{
++ int ret = 0;
++
++ snd_rpi_dionaudio_loco_v2.dev = &pdev->dev;
++
++ if (pdev->dev.of_node) {
++ struct device_node *i2s_node;
++ struct snd_soc_dai_link *dai =
++ &snd_rpi_dionaudio_loco_v2_dai[0];
++
++ i2s_node = of_parse_phandle(pdev->dev.of_node,
++ "i2s-controller", 0);
++ if (i2s_node) {
++ dai->cpu_dai_name = NULL;
++ dai->cpu_of_node = i2s_node;
++ dai->platform_name = NULL;
++ dai->platform_of_node = i2s_node;
++ }
++
++ digital_gain_0db_limit = !of_property_read_bool(
++ pdev->dev.of_node, "dionaudio,24db_digital_gain");
++ }
++
++ ret = snd_soc_register_card(&snd_rpi_dionaudio_loco_v2);
++ if (ret)
++ dev_err(&pdev->dev, "snd_soc_register_card() failed: %d\n",
++ ret);
++
++ return ret;
++}
++
++static int snd_rpi_dionaudio_loco_v2_remove(struct platform_device *pdev)
++{
++ return snd_soc_unregister_card(&snd_rpi_dionaudio_loco_v2);
++}
++
++static const struct of_device_id dionaudio_of_match[] = {
++ { .compatible = "dionaudio,dionaudio-loco-v2", },
++ {},
++};
++MODULE_DEVICE_TABLE(of, dionaudio_of_match);
++
++static struct platform_driver snd_rpi_dionaudio_loco_v2_driver = {
++ .driver = {
++ .name = "snd-rpi-dionaudio-loco-v2",
++ .owner = THIS_MODULE,
++ .of_match_table = dionaudio_of_match,
++ },
++ .probe = snd_rpi_dionaudio_loco_v2_probe,
++ .remove = snd_rpi_dionaudio_loco_v2_remove,
++};
++
++module_platform_driver(snd_rpi_dionaudio_loco_v2_driver);
++
++MODULE_AUTHOR("Miquel Blauw <info@dionaudio.nl>");
++MODULE_DESCRIPTION("ASoC Driver for DionAudio LOCO-V2");
++MODULE_LICENSE("GPL v2");
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