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Commit d33f250a authored by Yoshinori Sato's avatar Yoshinori Sato Committed by Daniel Lezcano
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clocksource/drivers/h8300: Use ioread / iowrite 

Signed-off-by: default avatarYoshinori Sato <ysato@users.sourceforge.jp>
Signed-off-by: default avatarDaniel Lezcano <daniel.lezcano@linaro.org>
parent 6f2b611d
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Showing with 50 additions and 43 deletions
drivers/clocksource/h8300_timer16.c
View file @ d33f250a
......@@ -19,6 +19,9 @@
#define TCR 0
#define TCNT 2
#define bset(b, a) iowrite8(ioread8(a) | (1 << (b)), (a))
#define bclr(b, a) iowrite8(ioread8(a) & ~(1 << (b)), (a))
struct timer16_priv {
struct clocksource cs;
unsigned long total_cycles;
......@@ -28,23 +31,22 @@ struct timer16_priv {
unsigned char enb;
unsigned char ovf;
unsigned char ovie;
struct clk *clk;
};
static unsigned long timer16_get_counter(struct timer16_priv *p)
{
unsigned long v1, v2, v3;
int o1, o2;
unsigned short v1, v2, v3;
unsigned char o1, o2;
o1 = readb(p->mapcommon + TISRC) & p->ovf;
o1 = ioread8(p->mapcommon + TISRC) & p->ovf;
/* Make sure the timer value is stable. Stolen from acpi_pm.c */
do {
o2 = o1;
v1 = readw(p->mapbase + TCNT);
v2 = readw(p->mapbase + TCNT);
v3 = readw(p->mapbase + TCNT);
o1 = readb(p->mapcommon + TISRC) & p->ovf;
v1 = ioread16be(p->mapbase + TCNT);
v2 = ioread16be(p->mapbase + TCNT);
v3 = ioread16be(p->mapbase + TCNT);
o1 = ioread8(p->mapcommon + TISRC) & p->ovf;
} while (unlikely((o1 != o2) || (v1 > v2 && v1 < v3)
|| (v2 > v3 && v2 < v1) || (v3 > v1 && v3 < v2)));
......@@ -59,8 +61,7 @@ static irqreturn_t timer16_interrupt(int irq, void *dev_id)
{
struct timer16_priv *p = (struct timer16_priv *)dev_id;
writeb(readb(p->mapcommon + TISRC) & ~p->ovf,
p->mapcommon + TISRC);
bclr(p->ovf, p->mapcommon + TISRC);
p->total_cycles += 0x10000;
return IRQ_HANDLED;
......@@ -89,12 +90,10 @@ static int timer16_enable(struct clocksource *cs)
WARN_ON(p->cs_enabled);
p->total_cycles = 0;
writew(0x0000, p->mapbase + TCNT);
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);
iowrite16be(0x0000, p->mapbase + TCNT);
iowrite8(0x83, p->mapbase + TCR);
bset(p->ovie, p->mapcommon + TISRC);
bset(p->enb, p->mapcommon + TSTR);
p->cs_enabled = true;
return 0;
......@@ -106,8 +105,8 @@ static void timer16_disable(struct clocksource *cs)
WARN_ON(!p->cs_enabled);
writeb(readb(p->mapcommon + TSTR) & ~p->enb,
p->mapcommon + TSTR);
bclr(p->ovie, p->mapcommon + TISRC);
bclr(p->enb, p->mapcommon + TSTR);
p->cs_enabled = false;
}
......@@ -162,9 +161,9 @@ 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.ovf = 1 << ch;
timer16_priv.ovie = 1 << (4 + ch);
timer16_priv.enb = ch;
timer16_priv.ovf = ch;
timer16_priv.ovie = 4 + ch;
ret = request_irq(irq, timer16_interrupt,
IRQF_TIMER, timer16_priv.cs.name, &timer16_priv);
......@@ -174,7 +173,7 @@ static void __init h8300_16timer_init(struct device_node *node)
}
clocksource_register_hz(&timer16_priv.cs,
clk_get_rate(timer16_priv.clk) / 8);
clk_get_rate(clk) / 8);
return;
unmap_comm:
......
drivers/clocksource/h8300_timer8.c
View file @ d33f250a
......@@ -24,10 +24,16 @@
#define TCORB 6
#define _8TCNT 8
#define CMIEA 6
#define CMFA 6
#define FLAG_STARTED (1 << 3)
#define SCALE 64
#define bset(b, a) iowrite8(ioread8(a) | (1 << (b)), (a))
#define bclr(b, a) iowrite8(ioread8(a) & ~(1 << (b)), (a))
struct timer8_priv {
struct clock_event_device ced;
void __iomem *mapbase;
......@@ -40,12 +46,11 @@ static irqreturn_t timer8_interrupt(int irq, void *dev_id)
struct timer8_priv *p = dev_id;
if (clockevent_state_oneshot(&p->ced))
writew(0x0000, p->mapbase + _8TCR);
iowrite16be(0x0000, p->mapbase + _8TCR);
p->ced.event_handler(&p->ced);
writeb(readb(p->mapbase + _8TCSR) & ~0x40,
p->mapbase + _8TCSR);
bclr(CMFA, p->mapbase + _8TCSR);
return IRQ_HANDLED;
}
......@@ -54,17 +59,18 @@ static void timer8_set_next(struct timer8_priv *p, unsigned long delta)
{
if (delta >= 0x10000)
pr_warn("delta out of range\n");
writeb(readb(p->mapbase + _8TCR) & ~0x40, p->mapbase + _8TCR);
writew(0, p->mapbase + _8TCNT);
writew(delta, p->mapbase + TCORA);
writeb(readb(p->mapbase + _8TCR) | 0x40, p->mapbase + _8TCR);
bclr(CMIEA, p->mapbase + _8TCR);
iowrite16be(delta, p->mapbase + TCORA);
iowrite16be(0x0000, p->mapbase + _8TCNT);
bclr(CMFA, p->mapbase + _8TCSR);
bset(CMIEA, p->mapbase + _8TCR);
}
static int timer8_enable(struct timer8_priv *p)
{
writew(0xffff, p->mapbase + TCORA);
writew(0x0000, p->mapbase + _8TCNT);
writew(0x0c02, p->mapbase + _8TCR);
iowrite16be(0xffff, p->mapbase + TCORA);
iowrite16be(0x0000, p->mapbase + _8TCNT);
iowrite16be(0x0c02, p->mapbase + _8TCR);
return 0;
}
......@@ -85,7 +91,7 @@ static int timer8_start(struct timer8_priv *p)
static void timer8_stop(struct timer8_priv *p)
{
writew(0x0000, p->mapbase + _8TCR);
iowrite16be(0x0000, p->mapbase + _8TCR);
}
static inline struct timer8_priv *ced_to_priv(struct clock_event_device *ced)
......
drivers/clocksource/h8300_tpu.c
View file @ d33f250a
......@@ -19,6 +19,8 @@
#define TSR 0x5
#define TCNT 0x6
#define TCFV 0x10
struct tpu_priv {
struct clocksource cs;
void __iomem *mapbase1;
......@@ -31,8 +33,8 @@ static inline unsigned long read_tcnt32(struct tpu_priv *p)
{
unsigned long tcnt;
tcnt = readw(p->mapbase1 + TCNT) << 16;
tcnt |= readw(p->mapbase2 + TCNT);
tcnt = ioread16be(p->mapbase1 + TCNT) << 16;
tcnt |= ioread16be(p->mapbase2 + TCNT);
return tcnt;
}
......@@ -41,7 +43,7 @@ static int tpu_get_counter(struct tpu_priv *p, unsigned long long *val)
unsigned long v1, v2, v3;
int o1, o2;
o1 = readb(p->mapbase1 + TSR) & 0x10;
o1 = ioread8(p->mapbase1 + TSR) & TCFV;
/* Make sure the timer value is stable. Stolen from acpi_pm.c */
do {
......@@ -49,7 +51,7 @@ static int tpu_get_counter(struct tpu_priv *p, unsigned long long *val)
v1 = read_tcnt32(p);
v2 = read_tcnt32(p);
v3 = read_tcnt32(p);
o1 = readb(p->mapbase1 + TSR) & 0x10;
o1 = ioread8(p->mapbase1 + TSR) & TCFV;
} while (unlikely((o1 != o2) || (v1 > v2 && v1 < v3)
|| (v2 > v3 && v2 < v1) || (v3 > v1 && v3 < v2)));
......@@ -82,10 +84,10 @@ static int tpu_clocksource_enable(struct clocksource *cs)
WARN_ON(p->cs_enabled);
writew(0, p->mapbase1 + TCNT);
writew(0, p->mapbase2 + TCNT);
writeb(0x0f, p->mapbase1 + TCR);
writeb(0x03, p->mapbase2 + TCR);
iowrite16be(0, p->mapbase1 + TCNT);
iowrite16be(0, p->mapbase2 + TCNT);
iowrite8(0x0f, p->mapbase1 + TCR);
iowrite8(0x03, p->mapbase2 + TCR);
p->cs_enabled = true;
return 0;
......@@ -97,8 +99,8 @@ static void tpu_clocksource_disable(struct clocksource *cs)
WARN_ON(!p->cs_enabled);
writeb(0, p->mapbase1 + TCR);
writeb(0, p->mapbase2 + TCR);
iowrite8(0, p->mapbase1 + TCR);
iowrite8(0, p->mapbase2 + TCR);
p->cs_enabled = false;
}
......
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