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ARM: set arch_gettimeoffset directly

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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>
This commit is contained in:
Stephen Warren
2012-11-08 11:51:58 -07:00
parent c8d5ba1891
commit 23c197b77f
11 changed files with 42 additions and 46 deletions
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8
arch/arm/mach-at91/at91x40_time.c
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@@ -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 @@ void __init at91x40_timer_init(void)
{
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 @@ void __init at91x40_timer_init(void)
struct sys_timer at91x40_timer = {
.init = at91x40_timer_init,
.offset = at91x40_gettimeoffset,
};