[ARM] 4821/1: RealView: Remove the platform dependencies from localti…

…mer.c

This patch removes the TWD_BASE macro used to set up and configure the
local timers on ARM11MPCore. The twd_base_addr and twd_size variables
are defined in localtimer.c and set from the realview_eb_init function.

Signed-off-by: Catalin Marinas <catalin.marinas@arm.com>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>

arch/arm/mach-realview/core.h

@@ -51,6 +51,10 @@ extern struct mmc_platform_data realview_mmc1_plat_data;
 extern struct clk realview_clcd_clk;
 extern struct clcd_board clcd_plat_data;
 extern void __iomem *gic_cpu_base_addr;
+#ifdef CONFIG_LOCAL_TIMERS
+extern void __iomem *twd_base_addr;
+extern unsigned int twd_size;
+#endif
 
 extern void realview_leds_event(led_event_t ledevt);
 extern void realview_timer_init(unsigned int timer_irq);

arch/arm/mach-realview/localtimer.c

@@ -24,9 +24,6 @@
 #include <asm/io.h>
 #include <asm/irq.h>
 
-#define TWD_BASE(cpu)	(__io_address(REALVIEW_EB11MP_TWD_BASE) + \
-			 ((cpu) * REALVIEW_EB11MP_TWD_SIZE))
-
 static DEFINE_PER_CPU(struct clock_event_device, local_clockevent);
 
 /*
@@ -41,6 +38,12 @@ void local_timer_interrupt(void)
 
 #ifdef CONFIG_LOCAL_TIMERS
 
+#define TWD_BASE(cpu)	(twd_base_addr + (cpu) * twd_size)
+
+/* set up by the platform code */
+void __iomem *twd_base_addr;
+unsigned int twd_size;
+
 static unsigned long mpcore_timer_rate;
 
 static void local_timer_set_mode(enum clock_event_mode mode,

arch/arm/mach-realview/realview_eb.c

@@ -309,9 +309,13 @@ static void __init realview_eb_timer_init(void)
 {
 	unsigned int timer_irq;
 
-	if (core_tile_eb11mp())
+	if (core_tile_eb11mp()) {
+#ifdef CONFIG_LOCAL_TIMERS
+		twd_base_addr = __io_address(REALVIEW_EB11MP_TWD_BASE);
+		twd_size = REALVIEW_EB11MP_TWD_SIZE;
+#endif
 		timer_irq = IRQ_EB11MP_TIMER0_1;
-	else
+	} else
 		timer_irq = IRQ_EB_TIMER0_1;
 
 	realview_timer_init(timer_irq);