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, 295 insertions, 0 deletions

diff --git a/target/linux/brcm2708/patches-4.9/950-0080-Add-IQAudIO-Digi-WM8804-board-support.patch b/target/linux/brcm2708/patches-4.9/950-0080-Add-IQAudIO-Digi-WM8804-board-support.patch
new file mode 100644
index 0000000..f6a23f9
--- /dev/null
+++ b/target/linux/brcm2708/patches-4.9/950-0080-Add-IQAudIO-Digi-WM8804-board-support.patch
@@ -0,0 +1,295 @@
+From 5d70e6012f390d6292ea8017cebb947a003fce00 Mon Sep 17 00:00:00 2001
+From: DigitalDreamtime <clive.messer@digitaldreamtime.co.uk>
+Date: Thu, 30 Jun 2016 18:38:42 +0100
+Subject: [PATCH] Add IQAudIO Digi WM8804 board support
+
+Support IQAudIO Digi board with iqaudio_digi machine driver and
+ iqaudio-digi-wm8804-audio overlay.
+
+NB. Machine driver is a cut and paste of hifiberry_digi code, with format
+    and general cleanup to comply with kernel coding standards.
+
+Signed-off-by: DigitalDreamtime <clive.messer@digitaldreamtime.co.uk>
+---
+ sound/soc/bcm/Kconfig        |   7 ++
+ sound/soc/bcm/Makefile       |   2 +
+ sound/soc/bcm/iqaudio_digi.c | 239 +++++++++++++++++++++++++++++++++++++++++++
+ 3 files changed, 248 insertions(+)
+ create mode 100644 sound/soc/bcm/iqaudio_digi.c
+
+--- a/sound/soc/bcm/Kconfig
++++ b/sound/soc/bcm/Kconfig
+@@ -80,6 +80,13 @@ config SND_BCM2708_SOC_IQAUDIO_DAC
+ 	help
+ 	  Say Y or M if you want to add support for IQaudIO-DAC.
+ 
++config SND_BCM2708_SOC_IQAUDIO_DIGI
++        tristate "Support for IQAudIO Digi"
++        depends on SND_BCM2708_SOC_I2S || SND_BCM2835_SOC_I2S
++        select SND_SOC_WM8804
++        help
++         Say Y or M if you want to add support for IQAudIO Digital IO board.
++
+ config SND_BCM2708_SOC_RASPIDAC3
+ 	tristate "Support for RaspiDAC Rev.3x"
+ 	depends on SND_BCM2708_SOC_I2S || SND_BCM2835_SOC_I2S
+--- a/sound/soc/bcm/Makefile
++++ b/sound/soc/bcm/Makefile
+@@ -19,6 +19,7 @@ snd-soc-justboom-digi-objs := justboom-d
+ snd-soc-rpi-dac-objs := rpi-dac.o
+ snd-soc-rpi-proto-objs := rpi-proto.o
+ snd-soc-iqaudio-dac-objs := iqaudio-dac.o
++snd-soc-iqaudio-digi-objs := iqaudio_digi.o
+ snd-soc-raspidac3-objs := raspidac3.o
+ snd-soc-audioinjector-pi-soundcard-objs := audioinjector-pi-soundcard.o
+ 
+@@ -32,6 +33,7 @@ obj-$(CONFIG_SND_BCM2708_SOC_JUSTBOOM_DI
+ obj-$(CONFIG_SND_BCM2708_SOC_RPI_DAC) += snd-soc-rpi-dac.o
+ obj-$(CONFIG_SND_BCM2708_SOC_RPI_PROTO) += snd-soc-rpi-proto.o
+ obj-$(CONFIG_SND_BCM2708_SOC_IQAUDIO_DAC) += snd-soc-iqaudio-dac.o
++obj-$(CONFIG_SND_BCM2708_SOC_IQAUDIO_DIGI) += snd-soc-iqaudio-digi.o
+ obj-$(CONFIG_SND_BCM2708_SOC_RASPIDAC3) += snd-soc-raspidac3.o
+ obj-$(CONFIG_SND_AUDIOINJECTOR_PI_SOUNDCARD) += snd-soc-audioinjector-pi-soundcard.o
+ 
+--- /dev/null
++++ b/sound/soc/bcm/iqaudio_digi.c
+@@ -0,0 +1,239 @@
++/*
++ * ASoC Driver for IQAudIO WM8804 Digi
++ *
++ * Author: Daniel Matuschek <info@crazy-audio.com>
++ * based on the HifiBerry DAC driver by Florian Meier <florian.meier@koalo.de>
++ *	Copyright 2013
++ *
++ * 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/wm8804.h"
++
++static short int auto_shutdown_output;
++module_param(auto_shutdown_output, short,
++	      S_IRUSR | S_IWUSR | S_IRGRP | S_IWGRP);
++MODULE_PARM_DESC(auto_shutdown_output, "Shutdown SP/DIF output if playback is stopped");
++
++static int snd_rpi_iqaudio_digi_init(struct snd_soc_pcm_runtime *rtd)
++{
++	struct snd_soc_codec *codec = rtd->codec;
++
++	/* enable TX output */
++	snd_soc_update_bits(codec, WM8804_PWRDN, 0x4, 0x0);
++
++	return 0;
++}
++
++static int snd_rpi_iqaudio_digi_startup(struct snd_pcm_substream *substream)
++{
++	struct snd_soc_pcm_runtime *rtd = substream->private_data;
++	struct snd_soc_codec *codec = rtd->codec;
++
++	/* turn on digital output */
++	snd_soc_update_bits(codec, WM8804_PWRDN, 0x3c, 0x00);
++
++	return 0;
++}
++
++static void snd_rpi_iqaudio_digi_shutdown(struct snd_pcm_substream *substream)
++{
++	if (auto_shutdown_output) {
++		struct snd_soc_pcm_runtime *rtd = substream->private_data;
++		struct snd_soc_codec *codec = rtd->codec;
++
++		/* turn off digital output */
++		snd_soc_update_bits(codec, WM8804_PWRDN, 0x3c, 0x3c);
++	}
++}
++
++
++static int snd_rpi_iqaudio_digi_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 *codec_dai = rtd->codec_dai;
++	struct snd_soc_codec *codec = rtd->codec;
++	struct snd_soc_dai *cpu_dai = rtd->cpu_dai;
++
++	int sysclk = 27000000; /* This is fixed on this board */
++
++	long mclk_freq = 0;
++	int mclk_div = 1;
++	int sampling_freq = 1;
++
++	int ret;
++
++	int samplerate = params_rate(params);
++
++	if (samplerate <= 96000) {
++		mclk_freq = samplerate * 256;
++		mclk_div = WM8804_MCLKDIV_256FS;
++	} else {
++		mclk_freq = samplerate * 128;
++		mclk_div = WM8804_MCLKDIV_128FS;
++	}
++
++	switch (samplerate) {
++	case 32000:
++		sampling_freq = 0x03;
++		break;
++	case 44100:
++		sampling_freq = 0x00;
++		break;
++	case 48000:
++		sampling_freq = 0x02;
++		break;
++	case 88200:
++		sampling_freq = 0x08;
++		break;
++	case 96000:
++		sampling_freq = 0x0a;
++		break;
++	case 176400:
++		sampling_freq = 0x0c;
++		break;
++	case 192000:
++		sampling_freq = 0x0e;
++		break;
++	default:
++		dev_err(codec->dev, "Failed to set WM8804 SYSCLK, unsupported samplerate %d\n",
++			samplerate);
++	}
++
++	snd_soc_dai_set_clkdiv(codec_dai, WM8804_MCLK_DIV, mclk_div);
++	snd_soc_dai_set_pll(codec_dai, 0, 0, sysclk, mclk_freq);
++
++	ret = snd_soc_dai_set_sysclk(codec_dai, WM8804_TX_CLKSRC_PLL,
++					sysclk, SND_SOC_CLOCK_OUT);
++	if (ret < 0) {
++		dev_err(codec->dev, "Failed to set WM8804 SYSCLK: %d\n", ret);
++		return ret;
++	}
++
++	/* Enable TX output */
++	snd_soc_update_bits(codec, WM8804_PWRDN, 0x4, 0x0);
++
++	/* Power on */
++	snd_soc_update_bits(codec, WM8804_PWRDN, 0x9, 0);
++
++	/* set sampling frequency status bits */
++	snd_soc_update_bits(codec, WM8804_SPDTX4, 0x0f, sampling_freq);
++
++	return snd_soc_dai_set_bclk_ratio(cpu_dai, 64);
++}
++
++/* machine stream operations */
++static struct snd_soc_ops snd_rpi_iqaudio_digi_ops = {
++	.hw_params	= snd_rpi_iqaudio_digi_hw_params,
++	.startup	= snd_rpi_iqaudio_digi_startup,
++	.shutdown	= snd_rpi_iqaudio_digi_shutdown,
++};
++
++static struct snd_soc_dai_link snd_rpi_iqaudio_digi_dai[] = {
++{
++	.name		= "IQAudIO Digi",
++	.stream_name	= "IQAudIO Digi HiFi",
++	.cpu_dai_name	= "bcm2708-i2s.0",
++	.codec_dai_name	= "wm8804-spdif",
++	.platform_name	= "bcm2708-i2s.0",
++	.codec_name	= "wm8804.1-003b",
++	.dai_fmt	= SND_SOC_DAIFMT_I2S |
++			  SND_SOC_DAIFMT_NB_NF |
++			  SND_SOC_DAIFMT_CBM_CFM,
++	.ops		= &snd_rpi_iqaudio_digi_ops,
++	.init		= snd_rpi_iqaudio_digi_init,
++},
++};
++
++/* audio machine driver */
++static struct snd_soc_card snd_rpi_iqaudio_digi = {
++	.name		= "IQAudIODigi",
++	.owner		= THIS_MODULE,
++	.dai_link	= snd_rpi_iqaudio_digi_dai,
++	.num_links	= ARRAY_SIZE(snd_rpi_iqaudio_digi_dai),
++};
++
++static int snd_rpi_iqaudio_digi_probe(struct platform_device *pdev)
++{
++	struct snd_soc_card *card = &snd_rpi_iqaudio_digi;
++	char *prefix = "wm8804-digi,";
++	char prop[128];
++	struct device_node *np;
++	int ret = 0;
++
++	snd_rpi_iqaudio_digi.dev = &pdev->dev;
++
++	np = pdev->dev.of_node;
++	if (np) {
++		struct snd_soc_dai_link *dai = &snd_rpi_iqaudio_digi_dai[0];
++		struct device_node *i2s_node;
++
++		i2s_node = of_parse_phandle(np, "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;
++		}
++
++		snprintf(prop, sizeof(prop), "%scard-name", prefix);
++		of_property_read_string(np, prop, &card->name);
++
++		snprintf(prop, sizeof(prop), "%sdai-name", prefix);
++		of_property_read_string(np, prop, &dai->name);
++
++		snprintf(prop, sizeof(prop), "%sdai-stream-name", prefix);
++		of_property_read_string(np, prop, &dai->stream_name);
++	}
++
++	ret = snd_soc_register_card(card);
++	if (ret)
++		dev_err(&pdev->dev, "snd_soc_register_card() failed: %d\n",
++			ret);
++
++	return ret;
++}
++
++static int snd_rpi_iqaudio_digi_remove(struct platform_device *pdev)
++{
++	return snd_soc_unregister_card(&snd_rpi_iqaudio_digi);
++}
++
++static const struct of_device_id snd_rpi_iqaudio_digi_of_match[] = {
++	{ .compatible = "iqaudio,wm8804-digi", },
++	{},
++};
++MODULE_DEVICE_TABLE(of, snd_rpi_iqaudio_digi_of_match);
++
++static struct platform_driver snd_rpi_iqaudio_digi_driver = {
++	.driver = {
++		.name		= "IQAudIODigi",
++		.owner		= THIS_MODULE,
++		.of_match_table	= snd_rpi_iqaudio_digi_of_match,
++	},
++	.probe  = snd_rpi_iqaudio_digi_probe,
++	.remove = snd_rpi_iqaudio_digi_remove,
++};
++
++module_platform_driver(snd_rpi_iqaudio_digi_driver);
++
++MODULE_AUTHOR("Daniel Matuschek <info@crazy-audio.com>");
++MODULE_DESCRIPTION("ASoC Driver for IQAudIO WM8804 Digi");
++MODULE_LICENSE("GPL v2");