brcm2708: update to v3.18

Signed-off-by: Álvaro Fernández Rojas <noltari@gmail.com>

git-svn-id: svn://svn.openwrt.org/openwrt/trunk@44392 3c298f89-4303-0410-b956-a3cf2f4a3e73

1 files changed, 175 insertions, 0 deletions

diff --git a/target/linux/brcm2708/patches-3.18/0050-BCM2708-armctrl-Add-IRQ-Device-Tree-support.patch b/target/linux/brcm2708/patches-3.18/0050-BCM2708-armctrl-Add-IRQ-Device-Tree-support.patch
new file mode 100755
index 0000000000..04d58fcd3d
--- /dev/null
+++ b/target/linux/brcm2708/patches-3.18/0050-BCM2708-armctrl-Add-IRQ-Device-Tree-support.patch
@@ -0,0 +1,175 @@
+From 6be3809614db2d52724eb4b5193c27d2466142be Mon Sep 17 00:00:00 2001
+From: notro <notro@tronnes.org>
+Date: Wed, 9 Jul 2014 14:47:48 +0200
+Subject: [PATCH 050/114] BCM2708: armctrl: Add IRQ Device Tree support
+
+Add Device Tree IRQ support for BCM2708.
+Usage is the same as for irq-bcm2835.
+See binding document: brcm,bcm2835-armctrl-ic.txt
+
+A bank 3 is added to handle GPIO interrupts. This is done because
+armctrl also handles GPIO interrupts.
+
+Signed-off-by: Noralf Tronnes <notro@tronnes.org>
+
+BCM2708: armctrl: remove irq bank 3
+
+irq bank 3 was needed by the pinctrl-bcm2708 and bcm2708_gpio
+combination. It is no longer required.
+
+Signed-off-by: Noralf Tronnes <notro@tronnes.org>
+---
+ arch/arm/boot/dts/bcm2708.dtsi  |  9 ++++
+ arch/arm/mach-bcm2708/armctrl.c | 96 +++++++++++++++++++++++++++++++++++++++++
+ 2 files changed, 105 insertions(+)
+
+diff --git a/arch/arm/boot/dts/bcm2708.dtsi b/arch/arm/boot/dts/bcm2708.dtsi
+index 50da059..a06f5b8 100644
+--- a/arch/arm/boot/dts/bcm2708.dtsi
++++ b/arch/arm/boot/dts/bcm2708.dtsi
+@@ -4,6 +4,8 @@
+ 	compatible = "brcm,bcm2708";
+ 	model = "BCM2708";
+ 
++	interrupt-parent = <&intc>;
++
+ 	chosen {
+ 		/*
+ 		   bootargs must be 1024 characters long because the
+@@ -17,6 +19,13 @@
+ 		#address-cells = <1>;
+ 		#size-cells = <1>;
+ 		ranges = <0x7e000000 0x20000000 0x02000000>;
++
++		intc: interrupt-controller {
++			compatible = "brcm,bcm2708-armctrl-ic";
++			reg = <0x7e00b200 0x200>;
++			interrupt-controller;
++			#interrupt-cells = <2>;
++		};
+ 	};
+ 
+ 	clocks {
+diff --git a/arch/arm/mach-bcm2708/armctrl.c b/arch/arm/mach-bcm2708/armctrl.c
+index 96fa9b9..74bacb3 100644
+--- a/arch/arm/mach-bcm2708/armctrl.c
++++ b/arch/arm/mach-bcm2708/armctrl.c
+@@ -23,6 +23,8 @@
+ #include <linux/version.h>
+ #include <linux/syscore_ops.h>
+ #include <linux/interrupt.h>
++#include <linux/irqdomain.h>
++#include <linux/of.h>
+ 
+ #include <asm/mach/irq.h>
+ #include <mach/hardware.h>
+@@ -79,6 +81,99 @@ static void armctrl_unmask_irq(struct irq_data *d)
+ 	}
+ }
+ 
++#ifdef CONFIG_OF
++
++#define NR_IRQS_BANK0           21
++#define NR_BANKS                3
++#define IRQS_PER_BANK           32
++
++/* from drivers/irqchip/irq-bcm2835.c */
++static int armctrl_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 != 2))
++                return -EINVAL;
++
++        if (WARN_ON(intspec[0] >= NR_BANKS))
++                return -EINVAL;
++
++        if (WARN_ON(intspec[1] >= IRQS_PER_BANK))
++                return -EINVAL;
++
++        if (WARN_ON(intspec[0] == 0 && intspec[1] >= NR_IRQS_BANK0))
++                return -EINVAL;
++
++	if (intspec[0] == 0)
++		*out_hwirq = ARM_IRQ0_BASE + intspec[1];
++	else if (intspec[0] == 1)
++		*out_hwirq = ARM_IRQ1_BASE + intspec[1];
++	else
++		*out_hwirq = ARM_IRQ2_BASE + intspec[1];
++
++	/* reverse remap_irqs[] */
++	switch (*out_hwirq) {
++	case INTERRUPT_VC_JPEG:
++		*out_hwirq = INTERRUPT_JPEG;
++		break;
++	case INTERRUPT_VC_USB:
++		*out_hwirq = INTERRUPT_USB;
++		break;
++	case INTERRUPT_VC_3D:
++		*out_hwirq = INTERRUPT_3D;
++		break;
++	case INTERRUPT_VC_DMA2:
++		*out_hwirq = INTERRUPT_DMA2;
++		break;
++	case INTERRUPT_VC_DMA3:
++		*out_hwirq = INTERRUPT_DMA3;
++		break;
++	case INTERRUPT_VC_I2C:
++		*out_hwirq = INTERRUPT_I2C;
++		break;
++	case INTERRUPT_VC_SPI:
++		*out_hwirq = INTERRUPT_SPI;
++		break;
++	case INTERRUPT_VC_I2SPCM:
++		*out_hwirq = INTERRUPT_I2SPCM;
++		break;
++	case INTERRUPT_VC_SDIO:
++		*out_hwirq = INTERRUPT_SDIO;
++		break;
++	case INTERRUPT_VC_UART:
++		*out_hwirq = INTERRUPT_UART;
++		break;
++	case INTERRUPT_VC_ARASANSDIO:
++		*out_hwirq = INTERRUPT_ARASANSDIO;
++		break;
++	}
++
++        *out_type = IRQ_TYPE_NONE;
++        return 0;
++}
++
++static struct irq_domain_ops armctrl_ops = {
++        .xlate = armctrl_xlate
++};
++
++void __init armctrl_dt_init(void)
++{
++	struct device_node *np;
++	struct irq_domain *domain;
++
++	np = of_find_compatible_node(NULL, NULL, "brcm,bcm2708-armctrl-ic");
++	if (!np)
++		return;
++
++	domain = irq_domain_add_legacy(np, BCM2708_ALLOC_IRQS,
++					IRQ_ARMCTRL_START, 0,
++					&armctrl_ops, NULL);
++        WARN_ON(!domain);
++}
++#else
++void __init armctrl_dt_init(void) { }
++#endif /* CONFIG_OF */
++
+ #if defined(CONFIG_PM)
+ 
+ /* for kernels 3.xx use the new syscore_ops apis but for older kernels use the sys dev class */
+@@ -215,5 +310,6 @@ int __init armctrl_init(void __iomem * base, unsigned int irq_start,
+ 
+ 	armctrl_pm_register(base, irq_start, resume_sources);
+ 	init_FIQ(FIQ_START);
++	armctrl_dt_init();
+ 	return 0;
+ }
+-- 
+1.8.3.2
+