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, 164 insertions, 0 deletions

diff --git a/target/linux/brcm2708/patches-4.14/950-0108-bcm2835-aux-Add-aux-interrupt-controller.patch b/target/linux/brcm2708/patches-4.14/950-0108-bcm2835-aux-Add-aux-interrupt-controller.patch
new file mode 100644
index 0000000000..bf1c1ab744
--- /dev/null
+++ b/target/linux/brcm2708/patches-4.14/950-0108-bcm2835-aux-Add-aux-interrupt-controller.patch
@@ -0,0 +1,164 @@
+From 61f87edd9a522d70d979f679d11849d1dc20cedb Mon Sep 17 00:00:00 2001
+From: Phil Elwell <phil@raspberrypi.org>
+Date: Thu, 23 Mar 2017 16:34:46 +0000
+Subject: [PATCH 108/454] bcm2835-aux: Add aux interrupt controller
+
+The AUX block has a shared interrupt line with a register indicating
+which devices have active IRQs. Expose this as a nested interrupt
+controller to avoid sharing problems.
+
+See: https://github.com/raspberrypi/linux/issues/1484
+     https://github.com/raspberrypi/linux/issues/1573
+
+Signed-off-by: Phil Elwell <phil@raspberrypi.org>
+---
+ drivers/clk/bcm/clk-bcm2835-aux.c | 120 ++++++++++++++++++++++++++++++
+ 1 file changed, 120 insertions(+)
+
+--- a/drivers/clk/bcm/clk-bcm2835-aux.c
++++ b/drivers/clk/bcm/clk-bcm2835-aux.c
+@@ -17,17 +17,107 @@
+ #include <linux/clk/bcm2835.h>
+ #include <linux/module.h>
+ #include <linux/platform_device.h>
++#include <linux/interrupt.h>
++#include <linux/irqdomain.h>
++#include <linux/of_irq.h>
+ #include <dt-bindings/clock/bcm2835-aux.h>
+ 
+ #define BCM2835_AUXIRQ		0x00
+ #define BCM2835_AUXENB		0x04
+ 
++#define BCM2835_AUXIRQ_NUM_IRQS  3
++
++#define BCM2835_AUXIRQ_UART_IRQ  0
++#define BCM2835_AUXIRQ_SPI1_IRQ  1
++#define BCM2835_AUXIRQ_SPI2_IRQ  2
++
++#define BCM2835_AUXIRQ_UART_MASK 0x01
++#define BCM2835_AUXIRQ_SPI1_MASK 0x02
++#define BCM2835_AUXIRQ_SPI2_MASK 0x04
++
++#define BCM2835_AUXIRQ_ALL_MASK \
++	(BCM2835_AUXIRQ_UART_MASK | \
++	 BCM2835_AUXIRQ_SPI1_MASK | \
++	 BCM2835_AUXIRQ_SPI2_MASK)
++
++struct auxirq_state {
++	void __iomem      *status;
++	u32                enables;
++	struct irq_domain *domain;
++	struct regmap     *local_regmap;
++};
++
++static struct auxirq_state auxirq __read_mostly;
++
++static irqreturn_t bcm2835_auxirq_handler(int irq, void *dev_id)
++{
++	u32 stat = readl_relaxed(auxirq.status);
++	u32 masked = stat & auxirq.enables;
++
++	if (masked & BCM2835_AUXIRQ_UART_MASK)
++		generic_handle_irq(irq_linear_revmap(auxirq.domain,
++						     BCM2835_AUXIRQ_UART_IRQ));
++
++	if (masked & BCM2835_AUXIRQ_SPI1_MASK)
++		generic_handle_irq(irq_linear_revmap(auxirq.domain,
++						     BCM2835_AUXIRQ_SPI1_IRQ));
++
++	if (masked & BCM2835_AUXIRQ_SPI2_MASK)
++		generic_handle_irq(irq_linear_revmap(auxirq.domain,
++						     BCM2835_AUXIRQ_SPI2_IRQ));
++
++	return (masked & BCM2835_AUXIRQ_ALL_MASK) ? IRQ_HANDLED : IRQ_NONE;
++}
++
++static int bcm2835_auxirq_xlate(struct irq_domain *d,
++				 struct device_node *ctrlr,
++				 const u32 *intspec, unsigned int intsize,
++				 unsigned long *out_hwirq,
++				 unsigned int *out_type)
++{
++	if (WARN_ON(intsize != 1))
++		return -EINVAL;
++
++	if (WARN_ON(intspec[0] >= BCM2835_AUXIRQ_NUM_IRQS))
++		return -EINVAL;
++
++	*out_hwirq = intspec[0];
++	*out_type = IRQ_TYPE_NONE;
++	return 0;
++}
++
++static void bcm2835_auxirq_mask(struct irq_data *data)
++{
++	irq_hw_number_t hwirq = irqd_to_hwirq(data);
++
++	auxirq.enables &= ~(1 << hwirq);
++}
++
++static void bcm2835_auxirq_unmask(struct irq_data *data)
++{
++	irq_hw_number_t hwirq = irqd_to_hwirq(data);
++
++	auxirq.enables |= (1 << hwirq);
++}
++
++static struct irq_chip bcm2835_auxirq_chip = {
++	.name = "bcm2835-auxirq",
++	.irq_mask = bcm2835_auxirq_mask,
++	.irq_unmask = bcm2835_auxirq_unmask,
++};
++
++static const struct irq_domain_ops bcm2835_auxirq_ops = {
++	.xlate = bcm2835_auxirq_xlate//irq_domain_xlate_onecell
++};
++
+ static int bcm2835_aux_clk_probe(struct platform_device *pdev)
+ {
+ 	struct device *dev = &pdev->dev;
++	struct device_node *node = dev->of_node;
+ 	struct clk_hw_onecell_data *onecell;
+ 	const char *parent;
+ 	struct clk *parent_clk;
++	int parent_irq;
+ 	struct resource *res;
+ 	void __iomem *reg, *gate;
+ 
+@@ -41,6 +131,36 @@ static int bcm2835_aux_clk_probe(struct
+ 	if (IS_ERR(reg))
+ 		return PTR_ERR(reg);
+ 
++	parent_irq = irq_of_parse_and_map(node, 0);
++	if (parent_irq) {
++		int ret;
++		int i;
++
++		/* Manage the AUX irq as well */
++		auxirq.status = reg + BCM2835_AUXIRQ;
++		auxirq.domain = irq_domain_add_linear(node,
++						      BCM2835_AUXIRQ_NUM_IRQS,
++						      &bcm2835_auxirq_ops,
++						      NULL);
++		if (!auxirq.domain)
++			return -ENXIO;
++
++		for (i = 0; i < BCM2835_AUXIRQ_NUM_IRQS; i++) {
++			unsigned int irq = irq_create_mapping(auxirq.domain, i);
++
++			if (irq == 0)
++				return -ENXIO;
++
++			irq_set_chip_and_handler(irq, &bcm2835_auxirq_chip,
++						 handle_level_irq);
++		}
++
++		ret = devm_request_irq(dev, parent_irq, bcm2835_auxirq_handler,
++				       0, "bcm2835-auxirq", NULL);
++		if (ret)
++			return ret;
++	}
++
+ 	onecell = devm_kmalloc(dev, sizeof(*onecell) + sizeof(*onecell->hws) *
+ 			       BCM2835_AUX_CLOCK_COUNT, GFP_KERNEL);
+ 	if (!onecell)