[ARM] 4820/1: RealView: Select the timer IRQ at run-time
This patch sets the timer IRQ at run-time by moving the sys_timer
structure and the timer_init function to the realview_eb.c file. This
allows multiple RealView platforms to be compiled in the same kernel
image.
Signed-off-by: Catalin Marinas <catalin.marinas@arm.com>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
diff --git a/arch/arm/mach-realview/core.c b/arch/arm/mach-realview/core.c
index 29514ac..98aefc9 100644
--- a/arch/arm/mach-realview/core.c
+++ b/arch/arm/mach-realview/core.c
@@ -39,7 +39,6 @@
#include <asm/mach/arch.h>
#include <asm/mach/flash.h>
#include <asm/mach/irq.h>
-#include <asm/mach/time.h>
#include <asm/mach/map.h>
#include <asm/mach/mmc.h>
@@ -513,12 +512,12 @@
.set_mode = timer_set_mode,
.set_next_event = timer_set_next_event,
.rating = 300,
- .irq = IRQ_TIMERINT0_1,
.cpumask = CPU_MASK_ALL,
};
-static void __init realview_clockevents_init(void)
+static void __init realview_clockevents_init(unsigned int timer_irq)
{
+ timer0_clockevent.irq = timer_irq;
timer0_clockevent.mult =
div_sc(1000000, NSEC_PER_SEC, timer0_clockevent.shift);
timer0_clockevent.max_delta_ns =
@@ -581,7 +580,7 @@
/*
* Set up the clock source and clock events devices
*/
-static void __init realview_timer_init(void)
+void __init realview_timer_init(unsigned int timer_irq)
{
u32 val;
@@ -616,12 +615,8 @@
/*
* Make irqs happen for the system timer
*/
- setup_irq(IRQ_TIMERINT0_1, &realview_timer_irq);
+ setup_irq(timer_irq, &realview_timer_irq);
realview_clocksource_init();
- realview_clockevents_init();
+ realview_clockevents_init(timer_irq);
}
-
-struct sys_timer realview_timer = {
- .init = realview_timer_init,
-};
diff --git a/arch/arm/mach-realview/core.h b/arch/arm/mach-realview/core.h
index 1c09137..16c9d45 100644
--- a/arch/arm/mach-realview/core.h
+++ b/arch/arm/mach-realview/core.h
@@ -27,8 +27,6 @@
#include <asm/leds.h>
#include <asm/io.h>
-extern struct sys_timer realview_timer;
-
#define AMBA_DEVICE(name,busid,base,plat) \
static struct amba_device name##_device = { \
.dev = { \
@@ -55,5 +53,6 @@
extern void __iomem *gic_cpu_base_addr;
extern void realview_leds_event(led_event_t ledevt);
+extern void realview_timer_init(unsigned int timer_irq);
#endif
diff --git a/arch/arm/mach-realview/realview_eb.c b/arch/arm/mach-realview/realview_eb.c
index f36af13..20b05f2 100644
--- a/arch/arm/mach-realview/realview_eb.c
+++ b/arch/arm/mach-realview/realview_eb.c
@@ -36,6 +36,7 @@
#include <asm/mach/arch.h>
#include <asm/mach/map.h>
#include <asm/mach/mmc.h>
+#include <asm/mach/time.h>
#include <asm/arch/board-eb.h>
#include <asm/arch/irqs.h>
@@ -304,6 +305,22 @@
realview_eb_smc91x_resources[1].end = IRQ_EB11MP_ETH;
}
+static void __init realview_eb_timer_init(void)
+{
+ unsigned int timer_irq;
+
+ if (core_tile_eb11mp())
+ timer_irq = IRQ_EB11MP_TIMER0_1;
+ else
+ timer_irq = IRQ_EB_TIMER0_1;
+
+ realview_timer_init(timer_irq);
+}
+
+static struct sys_timer realview_eb_timer = {
+ .init = realview_eb_timer_init,
+};
+
static void __init realview_eb_init(void)
{
int i;
@@ -339,6 +356,6 @@
.boot_params = 0x00000100,
.map_io = realview_eb_map_io,
.init_irq = gic_init_irq,
- .timer = &realview_timer,
+ .timer = &realview_eb_timer,
.init_machine = realview_eb_init,
MACHINE_END