#include <linux/interrupt.h>
#include <linux/sched.h>
#include <linux/spinlock.h>
+
#include <linux/err.h>
#include <linux/clk.h>
#include <linux/clocksource.h>
#define JIFFIES_TO_HW_TICKS(nr_jiffies, clock_rate) \
(((nr_jiffies) * (clock_rate)) / HZ)
-#if defined(CONFIG_ARCH_OMAP1)
-
static inline void omap_32k_timer_write(int val, int reg)
{
omap_writew(val, OMAP1_32K_TIMER_BASE + reg);
#define omap_32k_timer_ack_irq()
-#elif defined(CONFIG_ARCH_OMAP2)
-
-static struct omap_dm_timer *gptimer;
-
-static inline void omap_32k_timer_start(unsigned long load_val)
-{
- omap_dm_timer_set_load(gptimer, 1, 0xffffffff - load_val);
- omap_dm_timer_set_int_enable(gptimer, OMAP_TIMER_INT_OVERFLOW);
- omap_dm_timer_start(gptimer);
-}
-
-static inline void omap_32k_timer_stop(void)
-{
- omap_dm_timer_stop(gptimer);
-}
-
-static inline void omap_32k_timer_ack_irq(void)
-{
- u32 status = omap_dm_timer_read_status(gptimer);
- omap_dm_timer_write_status(gptimer, status);
-}
-
-#endif
-
static void omap_32k_timer_set_mode(enum clock_event_mode mode,
struct clock_event_device *evt)
{
return omap_readl(TIMER_32K_SYNCHRONIZED);
}
-/*
- * Rounds down to nearest usec. Note that this will overflow for larger values.
- */
-static inline unsigned long omap_32k_ticks_to_usecs(unsigned long ticks_32k)
-{
- return (ticks_32k * 5*5*5*5*5*5) >> 9;
-}
-
-/*
- * Rounds down to nearest nsec.
- */
-static inline unsigned long long
-omap_32k_ticks_to_nsecs(unsigned long ticks_32k)
-{
- return (unsigned long long) ticks_32k * 1000 * 5*5*5*5*5*5 >> 9;
-}
-
-/*
- * Returns current time from boot in nsecs. It's OK for this to wrap
- * around for now, as it's just a relative time stamp.
- */
-unsigned long long sched_clock(void)
-{
- return omap_32k_ticks_to_nsecs(omap_32k_sync_timer_read());
-}
-
static irqreturn_t omap_32k_timer_interrupt(int irq, void *dev_id)
{
struct clock_event_device *evt = &clockevent_32k_timer;
static __init void omap_init_32k_timer(void)
{
- if (cpu_class_is_omap1())
- setup_irq(INT_OS_TIMER, &omap_32k_timer_irq);
-
-#ifdef CONFIG_ARCH_OMAP2
- /* REVISIT: Check 24xx TIOCP_CFG settings after idle works */
- if (cpu_is_omap24xx()) {
- gptimer = omap_dm_timer_request_specific(1);
- BUG_ON(gptimer == NULL);
-
- omap_dm_timer_set_source(gptimer, OMAP_TIMER_SRC_32_KHZ);
- setup_irq(omap_dm_timer_get_irq(gptimer), &omap_32k_timer_irq);
- omap_dm_timer_set_int_enable(gptimer,
- OMAP_TIMER_INT_CAPTURE | OMAP_TIMER_INT_OVERFLOW |
- OMAP_TIMER_INT_MATCH);
- }
-#endif
-
clockevent_32k_timer.mult = div_sc(OMAP_32K_TICKS_PER_SEC,
NSEC_PER_SEC,
clockevent_32k_timer.shift);