brcm2708: rename all patches from raspberrypi git tree to use 950 prefix

Right now all brcm2708 patches are extracted from the non-mainline
raspberrypi/linux git tree. Many of them are hacks and/or are unneeded
in LEDE. Raspberry Pi is getting better and better mainline support so
it would be nice to finally start maintaining patches in a cleaner way:
1) Backport patches accepted in upstream tree
2) Start using upstream drivers
3) Pick only these patches that are needed for more complete support

Handling above tasks requires grouping patches - ideally using the same
prefixes as generic ones. It means we should rename existing patches to
use some high prefix. This will allow e.g. use 0xx for backported code.

Signed-off-by: Rafał Miłecki <rafal@milecki.pl>
Acked-by: Florian Fainelli <f.fainelli@gmail.com>
Acked-by: Stijn Tintel <stijn@linux-ipv6.be>

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 0000000000..eb6422a469
--- /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");