ARM: Remove dependency of plat-orion time code on mach directory includes.

This patch makes the various mach dirs that use the plat-orion time
code pass in timer and bridge addresses explicitly, instead of having
plat-orion get those values by including a mach dir include file --
the latter mechanism is problematic if you want to support multiple
ARM platforms in the same kernel image.

Signed-off-by: Lennert Buytenhek <buytenh@secretlab.ca>
Signed-off-by: Nicolas Pitre <nico@fluxnic.net>

2 files changed, 78 insertions, 46 deletions

diff --git a/arch/arm/plat-orion/include/plat/time.h b/arch/arm/plat-orion/include/plat/time.h
index c06ca35f3613..4d5f1f6e18df 100644
--- a/arch/arm/plat-orion/include/plat/time.h
+++ b/arch/arm/plat-orion/include/plat/time.h
@@ -11,7 +11,10 @@
 #ifndef __PLAT_TIME_H
 #define __PLAT_TIME_H
 
-void orion_time_init(unsigned int irq, unsigned int tclk);
+void orion_time_set_base(u32 timer_base);
+
+void orion_time_init(u32 bridge_base, u32 bridge_timer1_clr_mask,
+                     unsigned int irq, unsigned int tclk);
 
 
 #endif
diff --git a/arch/arm/plat-orion/time.c b/arch/arm/plat-orion/time.c
index c3da2478b2aa..742b0323c57b 100644
--- a/arch/arm/plat-orion/time.c
+++ b/arch/arm/plat-orion/time.c
@@ -18,28 +18,42 @@
 #include <linux/interrupt.h>
 #include <linux/irq.h>
 #include <asm/sched_clock.h>
-#include <asm/mach/time.h>
-#include <mach/bridge-regs.h>
-#include <mach/hardware.h>
 
 /*
- * Number of timer ticks per jiffy.
+ * MBus bridge block registers.
  */
-static u32 ticks_per_jiffy;
+#define BRIDGE_CAUSE_OFF        0x0110
+#define BRIDGE_MASK_OFF         0x0114
+#define  BRIDGE_INT_TIMER0       0x0002
+#define  BRIDGE_INT_TIMER1       0x0004
 
 
 /*
  * Timer block registers.
  */
-#define TIMER_CTRL              (TIMER_VIRT_BASE + 0x0000)
-#define  TIMER0_EN              0x0001
-#define  TIMER0_RELOAD_EN       0x0002
-#define  TIMER1_EN              0x0004
-#define  TIMER1_RELOAD_EN       0x0008
-#define TIMER0_RELOAD           (TIMER_VIRT_BASE + 0x0010)
-#define TIMER0_VAL              (TIMER_VIRT_BASE + 0x0014)
-#define TIMER1_RELOAD           (TIMER_VIRT_BASE + 0x0018)
-#define TIMER1_VAL              (TIMER_VIRT_BASE + 0x001c)
+#define TIMER_CTRL_OFF          0x0000
+#define  TIMER0_EN               0x0001
+#define  TIMER0_RELOAD_EN        0x0002
+#define  TIMER1_EN               0x0004
+#define  TIMER1_RELOAD_EN        0x0008
+#define TIMER0_RELOAD_OFF       0x0010
+#define TIMER0_VAL_OFF          0x0014
+#define TIMER1_RELOAD_OFF       0x0018
+#define TIMER1_VAL_OFF          0x001c
+
+
+/*
+ * SoC-specific data.
+ */
+static void __iomem *bridge_base;
+static u32 bridge_timer1_clr_mask;
+static void __iomem *timer_base;
+
+
+/*
+ * Number of timer ticks per jiffy.
+ */
+static u32 ticks_per_jiffy;
 
 
 /*
@@ -50,14 +64,14 @@ static DEFINE_CLOCK_DATA(cd);
 
 unsigned long long notrace sched_clock(void)
 {
-        u32 cyc = 0xffffffff - readl(TIMER0_VAL);
+        u32 cyc = ~readl(timer_base + TIMER0_VAL_OFF);
         return cyc_to_sched_clock(&cd, cyc, (u32)~0);
 }
 
 
 static void notrace orion_update_sched_clock(void)
 {
-        u32 cyc = 0xffffffff - readl(TIMER0_VAL);
+        u32 cyc = ~readl(timer_base + TIMER0_VAL_OFF);
         update_sched_clock(&cd, cyc, (u32)~0);
 }
 
@@ -71,7 +85,7 @@ static void __init setup_sched_clock(unsigned long tclk)
  */
 static cycle_t orion_clksrc_read(struct clocksource *cs)
 {
-        return 0xffffffff - readl(TIMER0_VAL);
+        return 0xffffffff - readl(timer_base + TIMER0_VAL_OFF);
 }
 
 static struct clocksource orion_clksrc = {
@@ -101,23 +115,23 @@ orion_clkevt_next_event(unsigned long delta, struct clock_event_device *dev)
         /*
          * Clear and enable clockevent timer interrupt.
          */
-        writel(BRIDGE_INT_TIMER1_CLR, BRIDGE_CAUSE);
+        writel(bridge_timer1_clr_mask, bridge_base + BRIDGE_CAUSE_OFF);
 
-        u = readl(BRIDGE_MASK);
+        u = readl(bridge_base + BRIDGE_MASK_OFF);
         u |= BRIDGE_INT_TIMER1;
-        writel(u, BRIDGE_MASK);
+        writel(u, bridge_base + BRIDGE_MASK_OFF);
 
         /*
          * Setup new clockevent timer value.
          */
-        writel(delta, TIMER1_VAL);
+        writel(delta, timer_base + TIMER1_VAL_OFF);
 
         /*
          * Enable the timer.
          */
-        u = readl(TIMER_CTRL);
+        u = readl(timer_base + TIMER_CTRL_OFF);
         u = (u & ~TIMER1_RELOAD_EN) | TIMER1_EN;
-        writel(u, TIMER_CTRL);
+        writel(u, timer_base + TIMER_CTRL_OFF);
 
         local_irq_restore(flags);
 
@@ -135,37 +149,38 @@ orion_clkevt_mode(enum clock_event_mode mode, struct clock_event_device *dev)
                 /*
                  * Setup timer to fire at 1/HZ intervals.
                  */
-                writel(ticks_per_jiffy - 1, TIMER1_RELOAD);
-                writel(ticks_per_jiffy - 1, TIMER1_VAL);
+                writel(ticks_per_jiffy - 1, timer_base + TIMER1_RELOAD_OFF);
+                writel(ticks_per_jiffy - 1, timer_base + TIMER1_VAL_OFF);
 
                 /*
                  * Enable timer interrupt.
                  */
-                u = readl(BRIDGE_MASK);
-                writel(u | BRIDGE_INT_TIMER1, BRIDGE_MASK);
+                u = readl(bridge_base + BRIDGE_MASK_OFF);
+                writel(u | BRIDGE_INT_TIMER1, bridge_base + BRIDGE_MASK_OFF);
 
                 /*
                  * Enable timer.
                  */
-                u = readl(TIMER_CTRL);
-                writel(u | TIMER1_EN | TIMER1_RELOAD_EN, TIMER_CTRL);
+                u = readl(timer_base + TIMER_CTRL_OFF);
+                writel(u | TIMER1_EN | TIMER1_RELOAD_EN,
+                       timer_base + TIMER_CTRL_OFF);
         } else {
                 /*
                  * Disable timer.
                  */
-                u = readl(TIMER_CTRL);
-                writel(u & ~TIMER1_EN, TIMER_CTRL);
+                u = readl(timer_base + TIMER_CTRL_OFF);
+                writel(u & ~TIMER1_EN, timer_base + TIMER_CTRL_OFF);
 
                 /*
                  * Disable timer interrupt.
                  */
-                u = readl(BRIDGE_MASK);
-                writel(u & ~BRIDGE_INT_TIMER1, BRIDGE_MASK);
+                u = readl(bridge_base + BRIDGE_MASK_OFF);
+                writel(u & ~BRIDGE_INT_TIMER1, bridge_base + BRIDGE_MASK_OFF);
 
                 /*
                  * ACK pending timer interrupt.
                  */
-                writel(BRIDGE_INT_TIMER1_CLR, BRIDGE_CAUSE);
+                writel(bridge_timer1_clr_mask, bridge_base + BRIDGE_CAUSE_OFF);
 
         }
         local_irq_restore(flags);
@@ -185,7 +200,7 @@ static irqreturn_t orion_timer_interrupt(int irq, void *dev_id)
         /*
          * ACK timer interrupt and call event handler.
          */
-        writel(BRIDGE_INT_TIMER1_CLR, BRIDGE_CAUSE);
+        writel(bridge_timer1_clr_mask, bridge_base + BRIDGE_CAUSE_OFF);
         orion_clkevt.event_handler(&orion_clkevt);
 
         return IRQ_HANDLED;
@@ -197,31 +212,45 @@ static struct irqaction orion_timer_irq = {
         .handler        = orion_timer_interrupt
 };
 
-void __init orion_time_init(unsigned int irq, unsigned int tclk)
+void __init
+orion_time_set_base(u32 _timer_base)
+{
+        timer_base = (void __iomem *)_timer_base;
+}
+
+void __init
+orion_time_init(u32 _bridge_base, u32 _bridge_timer1_clr_mask,
+                unsigned int irq, unsigned int tclk)
 {
         u32 u;
 
+        /*
+         * Set SoC-specific data.
+         */
+        bridge_base = (void __iomem *)_bridge_base;
+        bridge_timer1_clr_mask = _bridge_timer1_clr_mask;
+
         ticks_per_jiffy = (tclk + HZ/2) / HZ;
 
         /*
-         * Set scale and timer for sched_clock
+         * Set scale and timer for sched_clock.
          */
         setup_sched_clock(tclk);
 
         /*
          * Setup free-running clocksource timer (interrupts
-         * disabled.)
+         * disabled).
          */
-        writel(0xffffffff, TIMER0_VAL);
-        writel(0xffffffff, TIMER0_RELOAD);
-        u = readl(BRIDGE_MASK);
-        writel(u & ~BRIDGE_INT_TIMER0, BRIDGE_MASK);
-        u = readl(TIMER_CTRL);
-        writel(u | TIMER0_EN | TIMER0_RELOAD_EN, TIMER_CTRL);
+        writel(0xffffffff, timer_base + TIMER0_VAL_OFF);
+        writel(0xffffffff, timer_base + TIMER0_RELOAD_OFF);
+        u = readl(bridge_base + BRIDGE_MASK_OFF);
+        writel(u & ~BRIDGE_INT_TIMER0, bridge_base + BRIDGE_MASK_OFF);
+        u = readl(timer_base + TIMER_CTRL_OFF);
+        writel(u | TIMER0_EN | TIMER0_RELOAD_EN, timer_base + TIMER_CTRL_OFF);
         clocksource_register_hz(&orion_clksrc, tclk);
 
         /*
-         * Setup clockevent timer (interrupt-driven.)
+         * Setup clockevent timer (interrupt-driven).
          */
         setup_irq(irq, &orion_timer_irq);
         orion_clkevt.mult = div_sc(tclk, NSEC_PER_SEC, orion_clkevt.shift);