sh: SE7206 build fixes.

[karo-tx-linux.git] / arch / sh / kernel / timers / timer-mtu2.c

diff --git a/arch/sh/kernel/timers/timer-mtu2.c b/arch/sh/kernel/timers/timer-mtu2.c
index 73a5ef3c457de73fbef7da02c611dba6a2749287..045b2aba13fae9220d8bda6525cfcce78a7e36fd 100644 (file)
--- a/arch/sh/kernel/timers/timer-mtu2.c
+++ b/arch/sh/kernel/timers/timer-mtu2.c
@@ -98,8 +98,7 @@ static unsigned long mtu2_timer_get_offset(void)
        return count;
 }
 
-static irqreturn_t mtu2_timer_interrupt(int irq, void *dev_id,
-                                      struct pt_regs *regs)
+static irqreturn_t mtu2_timer_interrupt(int irq, void *dev_id)
 {
        unsigned long timer_status;
 
@@ -110,7 +109,7 @@ static irqreturn_t mtu2_timer_interrupt(int irq, void *dev_id,
 
        /* Do timer tick */
        write_seqlock(&xtime_lock);
-       handle_timer_tick(regs);
+       handle_timer_tick();
        write_sequnlock(&xtime_lock);
 
        return IRQ_HANDLED;
@@ -119,62 +118,10 @@ static irqreturn_t mtu2_timer_interrupt(int irq, void *dev_id,
 static struct irqaction mtu2_irq = {
        .name           = "timer",
        .handler        = mtu2_timer_interrupt,
-       .flags          = SA_INTERRUPT,
+       .flags          = IRQF_DISABLED,
        .mask           = CPU_MASK_NONE,
 };
 
-/*
- * Hah!  We'll see if this works (switching from usecs to nsecs).
- */
-static unsigned long mtu2_timer_get_frequency(void)
-{
-       u32 freq;
-       struct timespec ts1, ts2;
-       unsigned long diff_nsec;
-       unsigned long factor;
-
-       /* Setup the timer:  We don't want to generate interrupts, just
-        * have it count down at its natural rate.
-        */
-       
-       ctrl_outb(ctrl_inb(MTU2_TSTR) & ~MTU2_TSTR_CST1, MTU2_TSTR);
-       ctrl_outb(MTU2_TCR_CALIB, MTU2_TCR_1);
-       ctrl_outb(ctrl_inb(MTU2_TIER_1) & ~MTU2_TIER_TGIEA, MTU2_TIER_1);
-       ctrl_outw(0, MTU2_TCNT_1);
-
-       rtc_get_time(&ts2);
-
-       do {
-               rtc_get_time(&ts1);
-       } while (ts1.tv_nsec == ts2.tv_nsec && ts1.tv_sec == ts2.tv_sec);
-
-       /* actually start the timer */
-       ctrl_outw(ctrl_inw(CMT_CMSTR) | 0x01, CMT_CMSTR);
-
-       do {
-               rtc_get_time(&ts2);
-       } while (ts1.tv_nsec == ts2.tv_nsec && ts1.tv_sec == ts2.tv_sec);
-
-       freq = ctrl_inw(MTU2_TCNT_0);
-       if (ts2.tv_nsec < ts1.tv_nsec) {
-               ts2.tv_nsec += 1000000000;
-               ts2.tv_sec--;
-       }
-
-       diff_nsec = (ts2.tv_sec - ts1.tv_sec) * 1000000000 + (ts2.tv_nsec - ts1.tv_nsec);
-
-       /* this should work well if the RTC has a precision of n Hz, where
-        * n is an integer.  I don't think we have to worry about the other
-        * cases. */
-       factor = (1000000000 + diff_nsec/2) / diff_nsec;
-
-       if (factor * diff_nsec > 1100000000 ||
-           factor * diff_nsec <  900000000)
-               panic("weird RTC (diff_nsec %ld)", diff_nsec);
-
-       return freq * factor;
-}
-
 static unsigned int divisors[] = { 1, 4, 16, 64, 1, 1, 256 };
 
 static void mtu2_clk_init(struct clk *clk)
@@ -250,8 +197,9 @@ struct sys_timer_ops mtu2_timer_ops = {
        .init           = mtu2_timer_init,
        .start          = mtu2_timer_start,
        .stop           = mtu2_timer_stop,
-       .get_frequency  = mtu2_timer_get_frequency,
+#ifndef CONFIG_GENERIC_TIME
        .get_offset     = mtu2_timer_get_offset,
+#endif
 };
 
 struct sys_timer mtu2_timer = {