ARM: omap1: convert to using readl/writel instead of volatile struct

Tested-by: Tony Lindgren <tony@atomide.com>
Cc: linux-omap@vger.kernel.org
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>

1 files changed, 16 insertions, 15 deletions

diff --git a/arch/arm/mach-omap1/time.c b/arch/arm/mach-omap1/time.c
index e2c29b477c95..e7ab61625b44 100644
--- a/arch/arm/mach-omap1/time.c
+++ b/arch/arm/mach-omap1/time.c
@@ -68,49 +68,50 @@ typedef struct {
 } omap_mpu_timer_regs_t;
 
 #define omap_mpu_timer_base(n)                                                  \
-((volatile omap_mpu_timer_regs_t*)OMAP1_IO_ADDRESS(OMAP_MPU_TIMER_BASE +        \
+((omap_mpu_timer_regs_t __iomem *)OMAP1_IO_ADDRESS(OMAP_MPU_TIMER_BASE +        \
                                  (n)*OMAP_MPU_TIMER_OFFSET))
 
 static inline unsigned long notrace omap_mpu_timer_read(int nr)
 {
-        volatile omap_mpu_timer_regs_t* timer = omap_mpu_timer_base(nr);
-        return timer->read_tim;
+        omap_mpu_timer_regs_t __iomem *timer = omap_mpu_timer_base(nr);
+        return readl(&timer->read_tim);
 }
 
 static inline void omap_mpu_set_autoreset(int nr)
 {
-        volatile omap_mpu_timer_regs_t* timer = omap_mpu_timer_base(nr);
+        omap_mpu_timer_regs_t __iomem *timer = omap_mpu_timer_base(nr);
 
-        timer->cntl = timer->cntl | MPU_TIMER_AR;
+        writel(readl(&timer->cntl) | MPU_TIMER_AR, &timer->cntl);
 }
 
 static inline void omap_mpu_remove_autoreset(int nr)
 {
-        volatile omap_mpu_timer_regs_t* timer = omap_mpu_timer_base(nr);
+        omap_mpu_timer_regs_t __iomem *timer = omap_mpu_timer_base(nr);
 
-        timer->cntl = timer->cntl & ~MPU_TIMER_AR;
+        writel(readl(&timer->cntl) & ~MPU_TIMER_AR, &timer->cntl);
 }
 
 static inline void omap_mpu_timer_start(int nr, unsigned long load_val,
                                         int autoreset)
 {
-        volatile omap_mpu_timer_regs_t* timer = omap_mpu_timer_base(nr);
-        unsigned int timerflags = (MPU_TIMER_CLOCK_ENABLE | MPU_TIMER_ST);
+        omap_mpu_timer_regs_t __iomem *timer = omap_mpu_timer_base(nr);
+        unsigned int timerflags = MPU_TIMER_CLOCK_ENABLE | MPU_TIMER_ST;
 
-        if (autoreset) timerflags |= MPU_TIMER_AR;
+        if (autoreset)
+                timerflags |= MPU_TIMER_AR;
 
-        timer->cntl = MPU_TIMER_CLOCK_ENABLE;
+        writel(MPU_TIMER_CLOCK_ENABLE, &timer->cntl);
         udelay(1);
-        timer->load_tim = load_val;
+        writel(load_val, &timer->load_tim);
         udelay(1);
-        timer->cntl = timerflags;
+        writel(timerflags, &timer->cntl);
 }
 
 static inline void omap_mpu_timer_stop(int nr)
 {
-        volatile omap_mpu_timer_regs_t* timer = omap_mpu_timer_base(nr);
+        omap_mpu_timer_regs_t __iomem *timer = omap_mpu_timer_base(nr);
 
-        timer->cntl &= ~MPU_TIMER_ST;
+        writel(readl(&timer->cntl) & ~MPU_TIMER_ST, &timer->cntl);
 }
 
 /*