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-rw-r--r--sys-kernel/boest-v5.0.15/raspberrypi/0068-Add-Support-for-JustBoom-Audio-boards.patch175
1 files changed, 175 insertions, 0 deletions
diff --git a/sys-kernel/boest-v5.0.15/raspberrypi/0068-Add-Support-for-JustBoom-Audio-boards.patch b/sys-kernel/boest-v5.0.15/raspberrypi/0068-Add-Support-for-JustBoom-Audio-boards.patch
new file mode 100644
index 00000000..f50a6b56
--- /dev/null
+++ b/sys-kernel/boest-v5.0.15/raspberrypi/0068-Add-Support-for-JustBoom-Audio-boards.patch
@@ -0,0 +1,175 @@
+From cb2fb44c24d65db2ffc52218e554ef277062b503 Mon Sep 17 00:00:00 2001
+From: Aaron Shaw <shawaj@gmail.com>
+Date: Thu, 7 Apr 2016 21:26:21 +0100
+Subject: [PATCH 068/194] Add Support for JustBoom Audio boards
+
+justboom-dac: Adjust for ALSA API change
+
+As of 4.4, snd_soc_limit_volume now takes a struct snd_soc_card *
+rather than a struct snd_soc_codec *.
+
+Signed-off-by: Phil Elwell <phil@raspberrypi.org>
+
+ASoC: justboom-dac: fix S24_LE format
+
+Remove set_bclk_ratio call so 24-bit data is transmitted in
+24 bclk cycles.
+
+Also remove hw_params as it's no longer needed.
+
+Signed-off-by: Matthias Reichl <hias@horus.com>
+---
+ sound/soc/bcm/justboom-dac.c | 145 +++++++++++++++++++++++++++++++++++
+ 1 file changed, 145 insertions(+)
+
+diff --git a/sound/soc/bcm/justboom-dac.c b/sound/soc/bcm/justboom-dac.c
+new file mode 100644
+index 000000000000..9e7bb9f68ee2
+--- /dev/null
++++ b/sound/soc/bcm/justboom-dac.c
+@@ -0,0 +1,145 @@
++/*
++ * ASoC Driver for JustBoom DAC Raspberry Pi HAT Sound Card
++ *
++ * Author: Milan Neskovic
++ * Copyright 2016
++ * based on code by Daniel Matuschek <info@crazy-audio.com>
++ * based on code by Florian Meier <florian.meier@koalo.de>
++ *
++ * 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>
++
++#include "../codecs/pcm512x.h"
++
++static bool digital_gain_0db_limit = true;
++
++static int snd_rpi_justboom_dac_init(struct snd_soc_pcm_runtime *rtd)
++{
++ struct snd_soc_component *component = rtd->codec_dai->component;
++ snd_soc_component_update_bits(component, PCM512x_GPIO_EN, 0x08, 0x08);
++ snd_soc_component_update_bits(component, PCM512x_GPIO_OUTPUT_4, 0xf, 0x02);
++ snd_soc_component_update_bits(component, PCM512x_GPIO_CONTROL_1, 0x08,0x08);
++
++ 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_justboom_dac_startup(struct snd_pcm_substream *substream) {
++ struct snd_soc_pcm_runtime *rtd = substream->private_data;
++ struct snd_soc_component *component = rtd->codec_dai->component;
++ snd_soc_component_update_bits(component, PCM512x_GPIO_CONTROL_1, 0x08,0x08);
++ return 0;
++}
++
++static void snd_rpi_justboom_dac_shutdown(struct snd_pcm_substream *substream) {
++ struct snd_soc_pcm_runtime *rtd = substream->private_data;
++ struct snd_soc_component *component = rtd->codec_dai->component;
++ snd_soc_component_update_bits(component, PCM512x_GPIO_CONTROL_1, 0x08,0x00);
++}
++
++/* machine stream operations */
++static struct snd_soc_ops snd_rpi_justboom_dac_ops = {
++ .startup = snd_rpi_justboom_dac_startup,
++ .shutdown = snd_rpi_justboom_dac_shutdown,
++};
++
++static struct snd_soc_dai_link snd_rpi_justboom_dac_dai[] = {
++{
++ .name = "JustBoom DAC",
++ .stream_name = "JustBoom DAC HiFi",
++ .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_justboom_dac_ops,
++ .init = snd_rpi_justboom_dac_init,
++},
++};
++
++/* audio machine driver */
++static struct snd_soc_card snd_rpi_justboom_dac = {
++ .name = "snd_rpi_justboom_dac",
++ .driver_name = "JustBoomDac",
++ .owner = THIS_MODULE,
++ .dai_link = snd_rpi_justboom_dac_dai,
++ .num_links = ARRAY_SIZE(snd_rpi_justboom_dac_dai),
++};
++
++static int snd_rpi_justboom_dac_probe(struct platform_device *pdev)
++{
++ int ret = 0;
++
++ snd_rpi_justboom_dac.dev = &pdev->dev;
++
++ if (pdev->dev.of_node) {
++ struct device_node *i2s_node;
++ struct snd_soc_dai_link *dai = &snd_rpi_justboom_dac_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, "justboom,24db_digital_gain");
++ }
++
++ ret = devm_snd_soc_register_card(&pdev->dev, &snd_rpi_justboom_dac);
++ if (ret && ret != -EPROBE_DEFER)
++ dev_err(&pdev->dev,
++ "snd_soc_register_card() failed: %d\n", ret);
++
++ return ret;
++}
++
++static const struct of_device_id snd_rpi_justboom_dac_of_match[] = {
++ { .compatible = "justboom,justboom-dac", },
++ {},
++};
++MODULE_DEVICE_TABLE(of, snd_rpi_justboom_dac_of_match);
++
++static struct platform_driver snd_rpi_justboom_dac_driver = {
++ .driver = {
++ .name = "snd-rpi-justboom-dac",
++ .owner = THIS_MODULE,
++ .of_match_table = snd_rpi_justboom_dac_of_match,
++ },
++ .probe = snd_rpi_justboom_dac_probe,
++};
++
++module_platform_driver(snd_rpi_justboom_dac_driver);
++
++MODULE_AUTHOR("Milan Neskovic <info@justboom.co>");
++MODULE_DESCRIPTION("ASoC Driver for JustBoom PI DAC HAT Sound Card");
++MODULE_LICENSE("GPL v2");