Merge branch 'disintegrate-asm-generic' of git://git.infradead.org/users/dhowells/linux-headers into asm-generic

Patches from David Howells <dhowells@redhat.com>:

This is to complete part of the UAPI disintegration for which the
preparatory patches were pulled recently.

Note that there are some fixup patches which are at the base of the
branch aimed at you, plus all arches get the asm-generic branch merged in too.

* 'disintegrate-asm-generic' of git://git.infradead.org/users/dhowells/linux-headers:
  UAPI: (Scripted) Disintegrate include/asm-generic
  UAPI: Fix conditional header installation handling (notably kvm_para.h on m68k)
  c6x: remove c6x signal.h
  UAPI: Split compound conditionals containing __KERNEL__ in Arm64
  UAPI: Fix the guards on various asm/unistd.h files

Signed-off-by: Arnd Bergmann <arnd@arndb.de>

1 files changed, 48 insertions, 19 deletions

diff --git a/arch/arm/mach-vt8500/timer.c b/arch/arm/mach-vt8500/timer.c
index d5376c592ab..050e1833f2d 100644
--- a/arch/arm/mach-vt8500/timer.c
+++ b/arch/arm/mach-vt8500/timer.c
@@ -1,6 +1,7 @@
 /*
- *  arch/arm/mach-vt8500/timer.c
+ *  arch/arm/mach-vt8500/timer_dt.c
  *
+ *  Copyright (C) 2012 Tony Prisk <linux@prisktech.co.nz>
  *  Copyright (C) 2010 Alexey Charkov <alchark@gmail.com>
  *
  * This program is free software; you can redistribute it and/or modify
@@ -18,18 +19,25 @@
  * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
  */
 
+/*
+ * This file is copied and modified from the original timer.c provided by
+ * Alexey Charkov. Minor changes have been made for Device Tree Support.
+ */
+
 #include <linux/io.h>
 #include <linux/irq.h>
 #include <linux/interrupt.h>
 #include <linux/clocksource.h>
 #include <linux/clockchips.h>
 #include <linux/delay.h>
-
 #include <asm/mach/time.h>
 
-#include "devices.h"
+#include <linux/of.h>
+#include <linux/of_address.h>
+#include <linux/of_irq.h>
 
 #define VT8500_TIMER_OFFSET	0x0100
+#define VT8500_TIMER_HZ		3000000
 #define TIMER_MATCH_VAL		0x0000
 #define TIMER_COUNT_VAL		0x0010
 #define TIMER_STATUS_VAL	0x0014
@@ -39,7 +47,6 @@
 #define TIMER_COUNT_R_ACTIVE	(1 << 5)	/* not ready for read */
 #define TIMER_COUNT_W_ACTIVE	(1 << 4)	/* not ready for write */
 #define TIMER_MATCH_W_ACTIVE	(1 << 0)	/* not ready for write */
-#define VT8500_TIMER_HZ		3000000
 
 #define msecs_to_loops(t) (loops_per_jiffy / 1000 * HZ * t)
 
@@ -55,7 +62,7 @@ static cycle_t vt8500_timer_read(struct clocksource *cs)
 	return readl(regbase + TIMER_COUNT_VAL);
 }
 
-struct clocksource clocksource = {
+static struct clocksource clocksource = {
 	.name           = "vt8500_timer",
 	.rating         = 200,
 	.read           = vt8500_timer_read,
@@ -98,7 +105,7 @@ static void vt8500_timer_set_mode(enum clock_event_mode mode,
 	}
 }
 
-struct clock_event_device clockevent = {
+static struct clock_event_device clockevent = {
 	.name           = "vt8500_timer",
 	.features       = CLOCK_EVT_FEAT_ONESHOT,
 	.rating         = 200,
@@ -115,26 +122,51 @@ static irqreturn_t vt8500_timer_interrupt(int irq, void *dev_id)
 	return IRQ_HANDLED;
 }
 
-struct irqaction irq = {
+static struct irqaction irq = {
 	.name    = "vt8500_timer",
 	.flags   = IRQF_DISABLED | IRQF_TIMER | IRQF_IRQPOLL,
 	.handler = vt8500_timer_interrupt,
 	.dev_id  = &clockevent,
 };
 
-static void __init vt8500_timer_init(void)
+static struct of_device_id vt8500_timer_ids[] = {
+	{ .compatible = "via,vt8500-timer" },
+	{ }
+};
+
+void __init vt8500_timer_init(void)
 {
-	regbase = ioremap(wmt_pmc_base + VT8500_TIMER_OFFSET, 0x28);
-	if (!regbase)
-		printk(KERN_ERR "vt8500_timer_init: failed to map MMIO registers\n");
+	struct device_node *np;
+	int timer_irq;
+
+	np = of_find_matching_node(NULL, vt8500_timer_ids);
+	if (!np) {
+		pr_err("%s: Timer description missing from Device Tree\n",
+								__func__);
+		return;
+	}
+	regbase = of_iomap(np, 0);
+	if (!regbase) {
+		pr_err("%s: Missing iobase description in Device Tree\n",
+								__func__);
+		of_node_put(np);
+		return;
+	}
+	timer_irq = irq_of_parse_and_map(np, 0);
+	if (!timer_irq) {
+		pr_err("%s: Missing irq description in Device Tree\n",
+								__func__);
+		of_node_put(np);
+		return;
+	}
 
 	writel(1, regbase + TIMER_CTRL_VAL);
 	writel(0xf, regbase + TIMER_STATUS_VAL);
 	writel(~0, regbase + TIMER_MATCH_VAL);
 
 	if (clocksource_register_hz(&clocksource, VT8500_TIMER_HZ))
-		printk(KERN_ERR "vt8500_timer_init: clocksource_register failed for %s\n",
-					clocksource.name);
+		pr_err("%s: vt8500_timer_init: clocksource_register failed for %s\n",
+					__func__, clocksource.name);
 
 	clockevents_calc_mult_shift(&clockevent, VT8500_TIMER_HZ, 4);
 
@@ -144,12 +176,9 @@ static void __init vt8500_timer_init(void)
 	clockevent.min_delta_ns = clockevent_delta2ns(4, &clockevent);
 	clockevent.cpumask = cpumask_of(0);
 
-	if (setup_irq(wmt_timer_irq, &irq))
-		printk(KERN_ERR "vt8500_timer_init: setup_irq failed for %s\n",
-					clockevent.name);
+	if (setup_irq(timer_irq, &irq))
+		pr_err("%s: setup_irq failed for %s\n", __func__,
+							clockevent.name);
 	clockevents_register_device(&clockevent);
 }
 
-struct sys_timer vt8500_timer = {
-	.init = vt8500_timer_init
-};