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| author | Yoshinori Sato <ysato@users.sourceforge.jp> | 2015-12-05 02:48:14 +0900 |
|---|---|---|
| committer | Daniel Lezcano <daniel.lezcano@linaro.org> | 2015-12-16 11:33:22 +0100 |
| commit | 2a0ff87774e468e4b146fe5af9ffadf5169424f9 (patch) | |
| tree | 1c35f77d47782cc33c0760da9ddf926909159efc /drivers/clocksource/h8300_timer16.c | |
| parent | d662ed204357cfcf3b069ba705446f7395b80fc5 (diff) | |
| download | lwn-2a0ff87774e468e4b146fe5af9ffadf5169424f9.tar.gz lwn-2a0ff87774e468e4b146fe5af9ffadf5169424f9.zip | |
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>
Diffstat (limited to 'drivers/clocksource/h8300_timer16.c')
| -rw-r--r-- | drivers/clocksource/h8300_timer16.c | 14 |
1 files changed, 7 insertions, 7 deletions
diff --git a/drivers/clocksource/h8300_timer16.c b/drivers/clocksource/h8300_timer16.c index fc14a3f741bf..b14a8da90ecc 100644 --- a/drivers/clocksource/h8300_timer16.c +++ b/drivers/clocksource/h8300_timer16.c @@ -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); |