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clocksource/drivers/h8300: Change to overflow interrupt 

Counter overflow detection use for overflow interrupt

Signed-off-by: Yoshinori Sato <ysato@users.sourceforge.jp>
Signed-off-by: Daniel Lezcano <daniel.lezcano@linaro.org>
This commit is contained in:
Yoshinori Sato 2015-12-05 02:48:14 +09:00 committed by Daniel Lezcano
parent d662ed2043
commit 2a0ff87774
1 changed files with 7 additions and 7 deletions
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14
drivers/clocksource/h8300_timer16.c
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@ -14,7 +14,6 @@
#include <linux/of_irq.h>
#define TSTR 0
#define TISRA 4
#define TISRC 6
#define TCR 0
@ -27,9 +26,8 @@ struct timer16_priv {
void __iomem *mapcommon;
unsigned short cs_enabled;
unsigned char enb;
unsigned char imfa;
unsigned char imiea;
unsigned char ovf;
unsigned char ovie;
struct clk *clk;
};
@ -59,8 +57,8 @@ static irqreturn_t timer16_interrupt(int irq, void *dev_id)
{
struct timer16_priv *p = (struct timer16_priv *)dev_id;
writeb(readb(p->mapcommon + TISRA) & ~p->imfa,
p->mapcommon + TISRA);
writeb(readb(p->mapcommon + TISRC) & ~p->ovf,
p->mapcommon + TISRC);
p->total_cycles += 0x10000;
return IRQ_HANDLED;
@ -93,6 +91,8 @@ static int timer16_enable(struct clocksource *cs)
writeb(0x83, p->mapbase + TCR);
writeb(readb(p->mapcommon + TSTR) | p->enb,
p->mapcommon + TSTR);
writeb(readb(p->mapcommon + TISRC) | p->ovie,
p->mapcommon + TSTR);
p->cs_enabled = true;
return 0;
@ -161,8 +161,8 @@ static void __init h8300_16timer_init(struct device_node *node)
timer16_priv.mapbase = base[REG_CH];
timer16_priv.mapcommon = base[REG_COMM];
timer16_priv.enb = 1 << ch;
timer16_priv.imfa = 1 << ch;
timer16_priv.imiea = 1 << (4 + ch);
timer16_priv.ovf = 1 << ch;
timer16_priv.ovie = 1 << (4 + ch);
ret = request_irq(irq, timer16_interrupt,
IRQF_TIMER, timer16_priv.cs.name, &timer16_priv);