ARM: set arch_gettimeoffset directly
remove ARM's struct sys_timer .offset function pointer, and instead
directly set the arch_gettimeoffset function pointer when the timer
driver is initialized. This requires multiplying all function results
by 1000, since the removed arm_gettimeoffset() did this. Also,
s/unsigned long/u32/ just to make the function prototypes exactly
match that of arch_gettimeoffset.
Cc: Russell King <linux@arm.linux.org.uk>
Cc: Andrew Victor <linux@maxim.org.za>
Cc: Nicolas Ferre <nicolas.ferre@atmel.com>
Cc: Jean-Christophe Plagniol-Villard <plagnioj@jcrosoft.com>
Cc: Hartley Sweeten <hsweeten@visionengravers.com>
Cc: Ryan Mallon <rmallon@gmail.com>
Cc: Ben Dooks <ben-linux@fluff.org>
Cc: Kukjin Kim <kgene.kim@samsung.com>
Signed-off-by: Stephen Warren <swarren@nvidia.com>
diff --git a/arch/arm/mach-at91/at91x40_time.c b/arch/arm/mach-at91/at91x40_time.c
index 0e57e44..fb3c701 100644
--- a/arch/arm/mach-at91/at91x40_time.c
+++ b/arch/arm/mach-at91/at91x40_time.c
@@ -42,9 +42,10 @@
#define AT91_TC_CLK1BASE 0x40
#define AT91_TC_CLK2BASE 0x80
-static unsigned long at91x40_gettimeoffset(void)
+static u32 at91x40_gettimeoffset(void)
{
- return (at91_tc_read(AT91_TC_CLK1BASE + AT91_TC_CV) * 1000000 / (AT91X40_MASTER_CLOCK / 128));
+ return (at91_tc_read(AT91_TC_CLK1BASE + AT91_TC_CV) * 1000000 /
+ (AT91X40_MASTER_CLOCK / 128)) * 1000;
}
static irqreturn_t at91x40_timer_interrupt(int irq, void *dev_id)
@@ -64,6 +65,8 @@
{
unsigned int v;
+ arch_gettimeoffset = at91x40_gettimeoffset;
+
at91_tc_write(AT91_TC_BCR, 0);
v = at91_tc_read(AT91_TC_BMR);
v = (v & ~AT91_TC_TC1XC1S) | AT91_TC_TC1XC1S_NONE;
@@ -82,6 +85,5 @@
struct sys_timer at91x40_timer = {
.init = at91x40_timer_init,
- .offset = at91x40_gettimeoffset,
};