summaryrefslogtreecommitdiffstats
path: root/arch/arm/mach-nomadik/timer.c
diff options
context:
space:
mode:
Diffstat (limited to 'arch/arm/mach-nomadik/timer.c')
-rw-r--r--arch/arm/mach-nomadik/timer.c54
1 files changed, 3 insertions, 51 deletions
diff --git a/arch/arm/mach-nomadik/timer.c b/arch/arm/mach-nomadik/timer.c
index becd36357a..0b8dc866eb 100644
--- a/arch/arm/mach-nomadik/timer.c
+++ b/arch/arm/mach-nomadik/timer.c
@@ -10,55 +10,16 @@
*/
#include <common.h>
#include <init.h>
-#include <clock.h>
#include <io.h>
#include <mach/hardware.h>
-#include <mach/mtu.h>
-#include <mach/timex.h>
/* Initial value for SRC control register: all timers use MXTAL/8 source */
#define SRC_CR_INIT_MASK 0x00007fff
#define SRC_CR_INIT_VAL 0x2aaa8000
-static u32 nmdk_cycle; /* write-once */
-static __iomem void *mtu_base;
-
-/*
- * clocksource: the MTU device is a decrementing counters, so we negate
- * the value being read.
- */
-static uint64_t nmdk_read_timer(void)
-{
- return nmdk_cycle - readl(mtu_base + MTU_VAL(0));
-}
-
-static struct clocksource nmdk_clksrc = {
- .read = nmdk_read_timer,
- .shift = 20,
- .mask = CLOCKSOURCE_MASK(32),
-};
-
-static void nmdk_timer_reset(void)
-{
- u32 cr;
-
- writel(0, mtu_base + MTU_CR(0)); /* off */
-
- /* configure load and background-load, and fire it up */
- writel(nmdk_cycle, mtu_base + MTU_LR(0));
- writel(nmdk_cycle, mtu_base + MTU_BGLR(0));
- cr = MTU_CRn_PRESCALE_1 | MTU_CRn_32BITS;
- writel(cr, mtu_base + MTU_CR(0));
- writel(cr | MTU_CRn_ENA, mtu_base + MTU_CR(0));
-}
-
-static int nmdk_timer_init(void)
+static int st8815_timer_init(void)
{
u32 src_cr;
- unsigned long rate;
-
- rate = CLOCK_TICK_RATE; /* 2.4MHz */
- nmdk_cycle = (rate + 1000 / 2) / 1000;
/* Configure timer sources in "system reset controller" ctrl reg */
src_cr = readl(NOMADIK_SRC_BASE);
@@ -66,16 +27,7 @@ static int nmdk_timer_init(void)
src_cr |= SRC_CR_INIT_VAL;
writel(src_cr, NOMADIK_SRC_BASE);
- /* Save global pointer to mtu, used by functions above */
- mtu_base = (void *)NOMADIK_MTU0_BASE;
-
- /* Init the timer and register clocksource */
- nmdk_timer_reset();
-
- nmdk_clksrc.mult = clocksource_hz2mult(rate, nmdk_clksrc.shift);
-
- init_clock(&nmdk_clksrc);
-
+ add_generic_device("nomadik_mtu", DEVICE_ID_SINGLE, NULL, NOMADIK_MTU0_BASE, 0x1000, IORESOURCE_MEM, NULL);
return 0;
}
-core_initcall(nmdk_timer_init);
+coredevice_initcall(st8815_timer_init);