Merge tag 'v3.4-rc3' into staging/for_v3.5

* tag 'v3.4-rc3': (3755 commits)
  Linux 3.4-rc3
  x86-32: fix up strncpy_from_user() sign error
  ARM: 7386/1: jump_label: fixup for rename to static_key
  ARM: 7384/1: ThumbEE: Disable userspace TEEHBR access for !CONFIG_ARM_THUMBEE
  ARM: 7382/1: mm: truncate memory banks to fit in 4GB space for classic MMU
  ARM: 7359/2: smp_twd: Only wait for reprogramming on active cpus
  PCI: Fix regression in pci_restore_state(), v3
  SCSI: Fix error handling when no ULD is attached
  ARM: OMAP: clock: cleanup CPUfreq leftovers, fix build errors
  ARM: dts: remove blank interrupt-parent properties
  ARM: EXYNOS: Fix Kconfig dependencies for device tree enabled machine files
  do not export kernel's NULL #define to userspace
  ARM: EXYNOS: Remove broken config values for touchscren for NURI board
  ARM: EXYNOS: set fix xusbxti clock for NURI and Universal210 boards
  ARM: EXYNOS: fix regulator name for NURI board
  ARM: SAMSUNG: make SAMSUNG_PM_DEBUG select DEBUG_LL
  cpufreq: OMAP: fix build errors: depends on ARCH_OMAP2PLUS
  sparc64: Eliminate obsolete __handle_softirq() function
  sparc64: Fix bootup crash on sun4v.
  ARM: msm: Fix section mismatches in proc_comm.c
  ...

1 files changed, 66 insertions, 2 deletions

diff --git a/arch/arm/mach-at91/at91sam926x_time.c b/arch/arm/mach-at91/at91sam926x_time.c
index d89ead740a99..a94758b42737 100644
--- a/arch/arm/mach-at91/at91sam926x_time.c
+++ b/arch/arm/mach-at91/at91sam926x_time.c
@@ -14,6 +14,9 @@
 #include <linux/kernel.h>
 #include <linux/clk.h>
 #include <linux/clockchips.h>
+#include <linux/of.h>
+#include <linux/of_address.h>
+#include <linux/of_irq.h>
 
 #include <asm/mach/time.h>
 
@@ -133,7 +136,8 @@ static irqreturn_t at91sam926x_pit_interrupt(int irq, void *dev_id)
 static struct irqaction at91sam926x_pit_irq = {
 	.name		= "at91_tick",
 	.flags		= IRQF_SHARED | IRQF_DISABLED | IRQF_TIMER | IRQF_IRQPOLL,
-	.handler	= at91sam926x_pit_interrupt
+	.handler	= at91sam926x_pit_interrupt,
+	.irq		= AT91_ID_SYS,
 };
 
 static void at91sam926x_pit_reset(void)
@@ -149,6 +153,51 @@ static void at91sam926x_pit_reset(void)
 	pit_write(AT91_PIT_MR, (pit_cycle - 1) | AT91_PIT_PITEN);
 }
 
+#ifdef CONFIG_OF
+static struct of_device_id pit_timer_ids[] = {
+	{ .compatible = "atmel,at91sam9260-pit" },
+	{ /* sentinel */ }
+};
+
+static int __init of_at91sam926x_pit_init(void)
+{
+	struct device_node	*np;
+	int			ret;
+
+	np = of_find_matching_node(NULL, pit_timer_ids);
+	if (!np)
+		goto err;
+
+	pit_base_addr = of_iomap(np, 0);
+	if (!pit_base_addr)
+		goto node_err;
+
+	/* Get the interrupts property */
+	ret = irq_of_parse_and_map(np, 0);
+	if (!ret) {
+		pr_crit("AT91: PIT: Unable to get IRQ from DT\n");
+		goto ioremap_err;
+	}
+	at91sam926x_pit_irq.irq = ret;
+
+	of_node_put(np);
+
+	return 0;
+
+ioremap_err:
+	iounmap(pit_base_addr);
+node_err:
+	of_node_put(np);
+err:
+	return -EINVAL;
+}
+#else
+static int __init of_at91sam926x_pit_init(void)
+{
+	return -EINVAL;
+}
+#endif
+
 /*
  * Set up both clocksource and clockevent support.
  */
@@ -156,6 +205,10 @@ static void __init at91sam926x_pit_init(void)
 {
 	unsigned long	pit_rate;
 	unsigned	bits;
+	int		ret;
+
+	/* For device tree enabled device: initialize here */
+	of_at91sam926x_pit_init();
 
 	/*
 	 * Use our actual MCK to figure out how many MCK/16 ticks per
@@ -177,7 +230,9 @@ static void __init at91sam926x_pit_init(void)
 	clocksource_register_hz(&pit_clk, pit_rate);
 
 	/* Set up irq handler */
-	setup_irq(AT91_ID_SYS, &at91sam926x_pit_irq);
+	ret = setup_irq(at91sam926x_pit_irq.irq, &at91sam926x_pit_irq);
+	if (ret)
+		pr_crit("AT91: PIT: Unable to setup IRQ\n");
 
 	/* Set up and register clockevents */
 	pit_clkevt.mult = div_sc(pit_rate, NSEC_PER_SEC, pit_clkevt.shift);
@@ -193,6 +248,15 @@ static void at91sam926x_pit_suspend(void)
 
 void __init at91sam926x_ioremap_pit(u32 addr)
 {
+#if defined(CONFIG_OF)
+	struct device_node *np =
+		of_find_matching_node(NULL, pit_timer_ids);
+
+	if (np) {
+		of_node_put(np);
+		return;
+	}
+#endif
 	pit_base_addr = ioremap(addr, 16);
 
 	if (!pit_base_addr)