bcm27xx: import latest patches from the RPi foundation

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>
(cherry-picked from commit f07e572f64)

1 files changed, 238 insertions, 0 deletions

diff --git a/target/linux/bcm27xx/patches-5.4/950-0307-Add-Hifiberry-DAC-DSP-soundcard-driver-3224.patch b/target/linux/bcm27xx/patches-5.4/950-0307-Add-Hifiberry-DAC-DSP-soundcard-driver-3224.patch
new file mode 100644
index 0000000000..5855d0057b
--- /dev/null
+++ b/target/linux/bcm27xx/patches-5.4/950-0307-Add-Hifiberry-DAC-DSP-soundcard-driver-3224.patch
@@ -0,0 +1,238 @@
+From 59c54c8b3b5afe051ca627fb42a685909b58d631 Mon Sep 17 00:00:00 2001
+From: =?UTF-8?q?J=C3=B6rg=20Schambacher?=
+ <j-schambacher@users.noreply.github.com>
+Date: Thu, 12 Sep 2019 14:57:32 +0200
+Subject: [PATCH] Add Hifiberry DAC+DSP soundcard driver (#3224)
+
+Adds the driver for the Hifiberry DAC+DSP. It supports capture and
+playback depending on the DSP firmware.
+
+Signed-off-by: Joerg Schambacher <joerg@i2audio.com>
+---
+ sound/soc/bcm/Kconfig                   |  7 ++
+ sound/soc/bcm/Makefile                  |  2 +
+ sound/soc/bcm/hifiberry_dacplusadcpro.c | 28 +++-----
+ sound/soc/bcm/hifiberry_dacplusdsp.c    | 90 +++++++++++++++++++++++++
+ sound/soc/bcm/rpi-simple-soundcard.c    | 23 +++++++
+ 5 files changed, 132 insertions(+), 18 deletions(-)
+ create mode 100644 sound/soc/bcm/hifiberry_dacplusdsp.c
+
+--- a/sound/soc/bcm/Kconfig
++++ b/sound/soc/bcm/Kconfig
+@@ -59,6 +59,13 @@ config SND_BCM2708_SOC_HIFIBERRY_DACPLUS
+         help
+          Say Y or M if you want to add support for HifiBerry DAC+ADC PRO.
+ 
++config SND_BCM2708_SOC_HIFIBERRY_DACPLUSDSP
++        tristate "Support for HifiBerry DAC+DSP"
++        depends on SND_BCM2708_SOC_I2S || SND_BCM2835_SOC_I2S
++	select SND_RPI_SIMPLE_SOUNDCARD
++        help
++         Say Y or M if you want to add support for HifiBerry DSP-DAC.
++
+ config SND_BCM2708_SOC_HIFIBERRY_DIGI
+         tristate "Support for HifiBerry Digi"
+         depends on SND_BCM2708_SOC_I2S || SND_BCM2835_SOC_I2S
+--- a/sound/soc/bcm/Makefile
++++ b/sound/soc/bcm/Makefile
+@@ -16,6 +16,7 @@ snd-soc-googlevoicehat-codec-objs := goo
+ snd-soc-hifiberry-dacplus-objs := hifiberry_dacplus.o
+ snd-soc-hifiberry-dacplusadc-objs := hifiberry_dacplusadc.o
+ snd-soc-hifiberry-dacplusadcpro-objs := hifiberry_dacplusadcpro.o
++snd-soc-hifiberry-dacplusdsp-objs := hifiberry_dacplusdsp.o
+ snd-soc-justboom-dac-objs := justboom-dac.o
+ snd-soc-rpi-cirrus-objs := rpi-cirrus.o
+ snd-soc-rpi-proto-objs := rpi-proto.o
+@@ -41,6 +42,7 @@ obj-$(CONFIG_SND_BCM2708_SOC_GOOGLEVOICE
+ obj-$(CONFIG_SND_BCM2708_SOC_HIFIBERRY_DACPLUS) += snd-soc-hifiberry-dacplus.o
+ obj-$(CONFIG_SND_BCM2708_SOC_HIFIBERRY_DACPLUSADC) += snd-soc-hifiberry-dacplusadc.o
+ obj-$(CONFIG_SND_BCM2708_SOC_HIFIBERRY_DACPLUSADCPRO) += snd-soc-hifiberry-dacplusadcpro.o
++obj-$(CONFIG_SND_BCM2708_SOC_HIFIBERRY_DACPLUSDSP) += snd-soc-hifiberry-dacplusdsp.o
+ obj-$(CONFIG_SND_BCM2708_SOC_JUSTBOOM_DAC) += snd-soc-justboom-dac.o
+ obj-$(CONFIG_SND_BCM2708_SOC_RPI_CIRRUS) += snd-soc-rpi-cirrus.o
+ obj-$(CONFIG_SND_BCM2708_SOC_RPI_PROTO) += snd-soc-rpi-proto.o
+--- a/sound/soc/bcm/hifiberry_dacplusadcpro.c
++++ b/sound/soc/bcm/hifiberry_dacplusadcpro.c
+@@ -445,29 +445,21 @@ static struct snd_soc_ops snd_rpi_hifibe
+ 	.shutdown = snd_rpi_hifiberry_dacplusadcpro_shutdown,
+ };
+ 
+-static struct snd_soc_dai_link_component snd_rpi_hifiberry_dacplusadcpro_codecs[] = {
+-	{
+-		.name		= "pcm512x.1-004d",
+-		.dai_name	= "pcm512x-hifi",
+-	},
+-	{
+-		.name		= "pcm186x.1-004a",
+-		.dai_name	= "pcm1863-aif",
+-	},
+-};
++SND_SOC_DAILINK_DEFS(hifi,
++	DAILINK_COMP_ARRAY(COMP_CPU("bcm2708-i2s.0")),
++	DAILINK_COMP_ARRAY(COMP_CODEC("pcm512x.1-004d", "pcm512x-hifi"),
++			   COMP_CODEC("pcm186x.1-004a", "pcm1863-aif")),
++	DAILINK_COMP_ARRAY(COMP_PLATFORM("bcm2708-i2s.0")));
+ 
+ static struct snd_soc_dai_link snd_rpi_hifiberry_dacplusadcpro_dai[] = {
+ {
+ 	.name		= "HiFiBerry DAC+ADC PRO",
+ 	.stream_name	= "HiFiBerry DAC+ADC PRO HiFi",
+-	.cpu_dai_name	= "bcm2708-i2s.0",
+-	.platform_name	= "bcm2708-i2s.0",
+-	.codecs		= snd_rpi_hifiberry_dacplusadcpro_codecs,
+-	.num_codecs	= 2,
+ 	.dai_fmt	= SND_SOC_DAIFMT_I2S | SND_SOC_DAIFMT_NB_NF |
+ 				SND_SOC_DAIFMT_CBS_CFS,
+ 	.ops		= &snd_rpi_hifiberry_dacplusadcpro_ops,
+ 	.init		= snd_rpi_hifiberry_dacplusadcpro_init,
++	SND_SOC_DAILINK_REG(hifi),
+ },
+ };
+ 
+@@ -495,10 +487,10 @@ static int snd_rpi_hifiberry_dacplusadcp
+ 			"i2s-controller", 0);
+ 		if (i2s_node) {
+ 			for (i = 0; i < card->num_links; i++) {
+-				dai->cpu_dai_name = NULL;
+-				dai->cpu_of_node = i2s_node;
+-				dai->platform_name = NULL;
+-				dai->platform_of_node = i2s_node;
++				dai->cpus->dai_name = NULL;
++				dai->cpus->of_node = i2s_node;
++				dai->platforms->name = NULL;
++				dai->platforms->of_node = i2s_node;
+ 			}
+ 		}
+ 	}
+--- /dev/null
++++ b/sound/soc/bcm/hifiberry_dacplusdsp.c
+@@ -0,0 +1,90 @@
++// SPDX-License-Identifier: GPL-2.0
++/*
++ * ASoC Driver for HiFiBerry DAC + DSP
++ *
++ * Author:	Joerg Schambacher <joscha@schambacher.com>
++ *		Copyright 2018
++ *
++ * 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/init.h>
++#include <linux/module.h>
++#include <linux/of.h>
++#include <linux/platform_device.h>
++#include <sound/soc.h>
++
++static struct snd_soc_component_driver dacplusdsp_component_driver;
++
++static struct snd_soc_dai_driver dacplusdsp_dai = {
++	.name = "dacplusdsp-hifi",
++	.capture = {
++		.stream_name = "DAC+DSP Capture",
++		.channels_min = 2,
++		.channels_max = 2,
++		.rates = SNDRV_PCM_RATE_CONTINUOUS,
++		.formats = SNDRV_PCM_FMTBIT_S16_LE |
++			   SNDRV_PCM_FMTBIT_S24_LE |
++			   SNDRV_PCM_FMTBIT_S32_LE,
++	},
++	.playback = {
++		.stream_name = "DACP+DSP Playback",
++		.channels_min = 2,
++		.channels_max = 2,
++		.rates = SNDRV_PCM_RATE_CONTINUOUS,
++		.formats = SNDRV_PCM_FMTBIT_S16_LE |
++			   SNDRV_PCM_FMTBIT_S24_LE |
++			   SNDRV_PCM_FMTBIT_S32_LE,
++	},
++	.symmetric_rates = 1};
++
++#ifdef CONFIG_OF
++static const struct of_device_id dacplusdsp_ids[] = {
++	{
++		.compatible = "hifiberry,dacplusdsp",
++	},
++	{} };
++MODULE_DEVICE_TABLE(of, dacplusdsp_ids);
++#endif
++
++static int dacplusdsp_platform_probe(struct platform_device *pdev)
++{
++	int ret;
++
++	ret = snd_soc_register_component(&pdev->dev,
++			&dacplusdsp_component_driver, &dacplusdsp_dai, 1);
++	if (ret) {
++		pr_alert("snd_soc_register_component failed\n");
++		return ret;
++	}
++
++	return 0;
++}
++
++static int dacplusdsp_platform_remove(struct platform_device *pdev)
++{
++	snd_soc_unregister_component(&pdev->dev);
++	return 0;
++}
++
++static struct platform_driver dacplusdsp_driver = {
++	.driver = {
++		.name = "hifiberry-dacplusdsp-codec",
++		.of_match_table = of_match_ptr(dacplusdsp_ids),
++		},
++		.probe = dacplusdsp_platform_probe,
++		.remove = dacplusdsp_platform_remove,
++};
++
++module_platform_driver(dacplusdsp_driver);
++
++MODULE_AUTHOR("Joerg Schambacher <joerg@i2audio.com>");
++MODULE_DESCRIPTION("ASoC Driver for HiFiBerry DAC+DSP");
++MODULE_LICENSE("GPL v2");
+--- a/sound/soc/bcm/rpi-simple-soundcard.c
++++ b/sound/soc/bcm/rpi-simple-soundcard.c
+@@ -144,6 +144,27 @@ static struct snd_rpi_simple_drvdata drv
+ 	.dai       = snd_googlevoicehat_soundcard_dai,
+ };
+ 
++SND_SOC_DAILINK_DEFS(hifiberry_dacplusdsp,
++	DAILINK_COMP_ARRAY(COMP_EMPTY()),
++	DAILINK_COMP_ARRAY(COMP_CODEC("dacplusdsp-codec", "dacplusdsp-hifi")),
++	DAILINK_COMP_ARRAY(COMP_EMPTY()));
++
++static struct snd_soc_dai_link snd_hifiberrydacplusdsp_soundcard_dai[] = {
++{
++	.name           = "Hifiberry DAC+DSP SoundCard",
++	.stream_name    = "Hifiberry DAC+DSP SoundCard HiFi",
++	.dai_fmt        =  SND_SOC_DAIFMT_I2S |
++			   SND_SOC_DAIFMT_NB_NF |
++			   SND_SOC_DAIFMT_CBS_CFS,
++	SND_SOC_DAILINK_REG(hifiberry_dacplusdsp),
++},
++};
++
++static struct snd_rpi_simple_drvdata drvdata_hifiberrydacplusdsp = {
++	.card_name = "snd_rpi_hifiberrydacplusdsp_soundcard",
++	.dai       = snd_hifiberrydacplusdsp_soundcard_dai,
++};
++
+ SND_SOC_DAILINK_DEFS(hifiberry_amp,
+ 	DAILINK_COMP_ARRAY(COMP_EMPTY()),
+ 	DAILINK_COMP_ARRAY(COMP_CODEC("tas5713.1-001b", "tas5713-hifi")),
+@@ -213,6 +234,8 @@ static const struct of_device_id snd_rpi
+ 		.data = (void *) &drvdata_adau1977 },
+ 	{ .compatible = "googlevoicehat,googlevoicehat-soundcard",
+ 		.data = (void *) &drvdata_googlevoicehat },
++	{ .compatible = "hifiberrydacplusdsp,hifiberrydacplusdsp-soundcard",
++		.data = (void *) &drvdata_hifiberrydacplusdsp },
+ 	{ .compatible = "hifiberry,hifiberry-amp",
+ 		.data = (void *) &drvdata_hifiberry_amp },
+ 	{ .compatible = "hifiberry,hifiberry-dac",