brcm2708: add kernel 4.14 support

Patch generation process:
- rebase rpi/rpi-4.14.y on v4.14.89 from linux-stable
- git format-patch v4.14.89

Patches skipped during rebase:
- lan78xx: Read MAC address from DT if present
- lan78xx: Enable LEDs and auto-negotiation
- Revert "softirq: Let ksoftirqd do its job"
- sc16is7xx: Fix for multi-channel stall
- lan78xx: Ignore DT MAC address if already valid
- lan78xx: Simple patch to prevent some crashes
- tcp_write_queue_purge clears all the SKBs in the write queue
- Revert "lan78xx: Simple patch to prevent some crashes"
- lan78xx: Connect phy early
- Arm: mm: ftrace: Only set text back to ro after kernel has been marked ro
- Revert "Revert "softirq: Let ksoftirqd do its job""
- ASoC: cs4265: SOC_SINGLE register value error fix
- Revert "ASoC: cs4265: SOC_SINGLE register value error fix"
- Revert "net: pskb_trim_rcsum() and CHECKSUM_COMPLETE are friends"
- Revert "Revert "net: pskb_trim_rcsum() and CHECKSUM_COMPLETE are friends""

Patches dropped after rebase:
- net: Add non-mainline source for rtl8192cu wlan
- net: Fix rtl8192cu build errors on other platforms
- brcm: adds support for BCM43341 wifi
- brcmfmac: Mute expected startup 'errors'
- ARM64: Fix build break for RTL8187/RTL8192CU wifi
- ARM64: Enable RTL8187/RTL8192CU wifi in build config
- This is the driver for Sony CXD2880 DVB-T2/T tuner + demodulator
- brcmfmac: add CLM download support
- brcmfmac: request_firmware_direct is quieter
- Sets the BCDC priority to constant 0
- brcmfmac: Disable ARP offloading when promiscuous
- brcmfmac: Avoid possible out-of-bounds read
- brcmfmac: Delete redundant length check
- net: rtl8192cu: Normalize indentation
- net: rtl8192cu: Fix implicit fallthrough warnings
- Revert "Sets the BCDC priority to constant 0"
- media: cxd2880: Bump to match 4.18.y version
- media: cxd2880-spi: Bump to match 4.18.y version
- Revert "mm: alloc_contig: re-allow CMA to compact FS pages"
- Revert "Revert "mm: alloc_contig: re-allow CMA to compact FS pages""
- cxd2880: CXD2880_SPI_DRV should select DVB_CXD2880 with
  MEDIA_SUBDRV_AUTOSELECT
- 950-0421-HID-hid-bigbenff-driver-for-BigBen-Interactive-PS3OF.patch
- 950-0453-Add-hid-bigbenff-to-list-of-have_special_driver-for-.patch

Make I2C built-in instead of modular as in upstream defconfig; also the
easiest way to get MFD_ARIZONA enabled, which is required by
kmod-sound-soc-rpi-cirrus.
Add missing compatible strings from
4.9/960-add-rasbperrypi-compatible.patch, using upstream names for
compute modules.
Add extra patch to enable the LEDs on lan78xx.

Compile-tested: bcm2708, bcm2709, bcm2710 (with CONFIG_ALL_KMODS=y)
Runtime-tested: bcm2708, bcm2710

Signed-off-by: Stijn Tintel <stijn@linux-ipv6.be>

1 files changed, 245 insertions, 0 deletions

diff --git a/target/linux/brcm2708/patches-4.14/950-0412-PoE-HAT-driver-cleanup.patch b/target/linux/brcm2708/patches-4.14/950-0412-PoE-HAT-driver-cleanup.patch
new file mode 100644
index 0000000000..58aa539550
--- /dev/null
+++ b/target/linux/brcm2708/patches-4.14/950-0412-PoE-HAT-driver-cleanup.patch
@@ -0,0 +1,245 @@
+From 97a6a1f61eb949892457a739435fd5280fc800f8 Mon Sep 17 00:00:00 2001
+From: XECDesign <XECDesign@users.noreply.github.com>
+Date: Wed, 29 Aug 2018 15:08:30 +0100
+Subject: [PATCH 412/454] PoE HAT driver cleanup
+
+* Fix undeclared variable in rpi_poe_fan_suspend
+* Add SPDX-License-Identifier
+* Expand PoE acronym in Kconfig help
+* Give clearer error message on of_property_count_u32_elems fail
+* Add documentation
+* Add vendor to of_device_id compatible string.
+* Rename m_data_s struct to fw_data_s
+* Fix typos
+
+Fixes: #2665
+
+Signed-off-by: Serge Schneider <serge@raspberrypi.org>
+---
+ .../devicetree/bindings/hwmon/rpi-poe-fan.txt | 55 +++++++++++++++++++
+ Documentation/hwmon/rpi-poe-fan               | 15 +++++
+ .../arm/boot/dts/overlays/rpi-poe-overlay.dts |  2 +-
+ drivers/hwmon/Kconfig                         |  5 +-
+ drivers/hwmon/rpi-poe-fan.c                   | 39 ++++++-------
+ 5 files changed, 90 insertions(+), 26 deletions(-)
+ create mode 100644 Documentation/devicetree/bindings/hwmon/rpi-poe-fan.txt
+ create mode 100644 Documentation/hwmon/rpi-poe-fan
+
+--- /dev/null
++++ b/Documentation/devicetree/bindings/hwmon/rpi-poe-fan.txt
+@@ -0,0 +1,55 @@
++Bindings for the Raspberry Pi PoE HAT fan
++
++Required properties:
++- compatible	: "raspberrypi,rpi-poe-fan"
++- firmware	: Reference to the RPi firmware device node
++- pwms		: the PWM that is used to control the PWM fan
++- cooling-levels      : PWM duty cycle values in a range from 0 to 255
++			which correspond to thermal cooling states
++
++Example:
++	fan0: rpi-poe-fan@0 {
++		compatible = "raspberrypi,rpi-poe-fan";
++		firmware = <&firmware>;
++		cooling-min-state = <0>;
++		cooling-max-state = <3>;
++		#cooling-cells = <2>;
++		cooling-levels = <0 50 150 255>;
++		status = "okay";
++	};
++
++	thermal-zones {
++		cpu_thermal: cpu-thermal {
++			trips {
++				threshold: trip-point@0 {
++					temperature = <45000>;
++					hysteresis = <5000>;
++					type = "active";
++				};
++				target: trip-point@1 {
++					temperature = <50000>;
++					hysteresis = <2000>;
++					type = "active";
++				};
++				cpu_hot: cpu_hot@0 {
++					temperature = <55000>;
++					hysteresis = <2000>;
++					type = "active";
++				};
++			};
++			cooling-maps {
++				map0 {
++					trip = <&threshold>;
++					cooling-device = <&fan0 0 1>;
++				};
++				map1 {
++					trip = <&target>;
++					cooling-device = <&fan0 1 2>;
++				};
++				map2 {
++					trip = <&cpu_hot>;
++					cooling-device = <&fan0 2 3>;
++				};
++			};
++		};
++	};
+--- /dev/null
++++ b/Documentation/hwmon/rpi-poe-fan
+@@ -0,0 +1,15 @@
++Kernel driver rpi-poe-fan
++=====================
++
++This driver enables the use of the Raspberry Pi PoE HAT fan.
++
++Author: Serge Schneider <serge@raspberrypi.org>
++
++Description
++-----------
++
++The driver implements a simple interface for driving the Raspberry Pi PoE
++(Power over Ethernet) HAT fan. The driver passes commands to the Raspberry Pi
++firmware through the mailbox property interface. The firmware then forwards
++the commands to the board over I2C on the ID_EEPROM pins. The driver exposes
++the fan to the user space through the hwmon sysfs interface.
+--- a/arch/arm/boot/dts/overlays/rpi-poe-overlay.dts
++++ b/arch/arm/boot/dts/overlays/rpi-poe-overlay.dts
+@@ -11,7 +11,7 @@
+ 		target-path = "/";
+ 		__overlay__ {
+ 			fan0: rpi-poe-fan@0 {
+-				compatible = "rpi-poe-fan";
++				compatible = "raspberrypi,rpi-poe-fan";
+ 				firmware = <&firmware>;
+ 				cooling-min-state = <0>;
+ 				cooling-max-state = <3>;
+--- a/drivers/hwmon/Kconfig
++++ b/drivers/hwmon/Kconfig
+@@ -1287,11 +1287,12 @@ config SENSORS_PWM_FAN
+ 	  will be called pwm-fan.
+ 
+ config SENSORS_RPI_POE_FAN
+-	tristate "Raspberry Pi POE HAT fan"
++	tristate "Raspberry Pi PoE HAT fan"
+ 	depends on RASPBERRYPI_FIRMWARE
+ 	depends on THERMAL || THERMAL=n
+ 	help
+-	  If you say yes here you get support for Raspberry Pi POE HAT fan.
++	  If you say yes here you get support for Raspberry Pi PoE (Power over
++	  Ethernet) HAT fan.
+ 
+ 	  This driver can also be built as a module.  If so, the module
+ 	  will be called rpi-poe-fan.
+--- a/drivers/hwmon/rpi-poe-fan.c
++++ b/drivers/hwmon/rpi-poe-fan.c
+@@ -1,20 +1,11 @@
++// SPDX-License-Identifier: GPL-2.0
+ /*
+- * rpi-poe-fan.c - Hwmon driver for Raspberry Pi POE HAT fan.
++ * rpi-poe-fan.c - Hwmon driver for Raspberry Pi PoE HAT fan.
+  *
+  * Copyright (C) 2018 Raspberry Pi (Trading) Ltd.
+  * Based on pwm-fan.c by Kamil Debski <k.debski@samsung.com>
+  *
+  * Author: Serge Schneider <serge@raspberrypi.org>
+- *
+- * This program is free software; you can redistribute it and/or modify
+- * it under the terms of the GNU General Public License as published by
+- * the Free Software Foundation; either version 2 of the License, or
+- * (at your option) any later version.
+- *
+- * 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/hwmon.h>
+@@ -46,41 +37,41 @@ struct rpi_poe_fan_ctx {
+ 	struct notifier_block nb;
+ };
+ 
+-struct m_data_s{
++struct fw_tag_data_s{
+ 	u32 reg;
+ 	u32 val;
+ 	u32 ret;
+ };
+ 
+ static int write_reg(struct rpi_firmware *fw, u32 reg, u32 *val){
+-	struct m_data_s m_data = {
++	struct fw_tag_data_s fw_tag_data = {
+ 		.reg = reg,
+ 		.val = *val
+ 	};
+ 	int ret;
+ 	ret = rpi_firmware_property(fw, RPI_FIRMWARE_SET_POE_HAT_VAL,
+-				    &m_data, sizeof(m_data));
++				    &fw_tag_data, sizeof(fw_tag_data));
+ 	if (ret) {
+ 		return ret;
+-	} else if (m_data.ret) {
++	} else if (fw_tag_data.ret) {
+ 		return -EIO;
+ 	}
+ 	return 0;
+ }
+ 
+ static int read_reg(struct rpi_firmware *fw, u32 reg, u32 *val){
+-	struct m_data_s m_data = {
++	struct fw_tag_data_s fw_tag_data = {
+ 		.reg = reg,
+ 	};
+ 	int ret;
+ 	ret = rpi_firmware_property(fw, RPI_FIRMWARE_GET_POE_HAT_VAL,
+-				    &m_data, sizeof(m_data));
++				    &fw_tag_data, sizeof(fw_tag_data));
+ 	if (ret) {
+ 		return ret;
+-	} else if (m_data.ret) {
++	} else if (fw_tag_data.ret) {
+ 		return -EIO;
+ 	}
+-	*val = m_data.val;
++	*val = fw_tag_data.val;
+ 	return 0;
+ }
+ 
+@@ -268,7 +259,8 @@ static int rpi_poe_fan_of_get_cooling_da
+ 
+ 	ret = of_property_count_u32_elems(np, "cooling-levels");
+ 	if (ret <= 0) {
+-		dev_err(dev, "Wrong data!\n");
++		dev_err(dev, "cooling-levels property missing or invalid: %d\n",
++			ret);
+ 		return ret ? : -EINVAL;
+ 	}
+ 
+@@ -397,10 +389,11 @@ static int rpi_poe_fan_suspend(struct de
+ {
+ 	struct rpi_poe_fan_ctx *ctx = dev_get_drvdata(dev);
+ 	u32 value = 0;
++	int ret = 0;
+ 
+ 	if (ctx->pwm_value != value)
+ 		ret = write_reg(ctx->fw, POE_CUR_PWM, &value);
+-	return 0;
++	return ret;
+ }
+ 
+ static int rpi_poe_fan_resume(struct device *dev)
+@@ -420,7 +413,7 @@ static SIMPLE_DEV_PM_OPS(rpi_poe_fan_pm,
+ 			 rpi_poe_fan_resume);
+ 
+ static const struct of_device_id of_rpi_poe_fan_match[] = {
+-	{ .compatible = "rpi-poe-fan", },
++	{ .compatible = "raspberrypi,rpi-poe-fan", },
+ 	{},
+ };
+ MODULE_DEVICE_TABLE(of, of_rpi_poe_fan_match);
+@@ -439,5 +432,5 @@ module_platform_driver(rpi_poe_fan_drive
+ 
+ MODULE_AUTHOR("Serge Schneider <serge@raspberrypi.org>");
+ MODULE_ALIAS("platform:rpi-poe-fan");
+-MODULE_DESCRIPTION("Raspberry Pi POE HAT fan driver");
++MODULE_DESCRIPTION("Raspberry Pi PoE HAT fan driver");
+ MODULE_LICENSE("GPL");