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authorAlan Cox <alan@lxorguk.ukuu.org.uk>2008-01-30 13:33:14 +0100
committerIngo Molnar <mingo@elte.hu>2008-01-30 13:33:14 +0100
commit466eed22d127a1f16e1251cdc54a9f8f944140c0 (patch)
treef9b85efa895f3e2dd7f112a4aded5b2ae0bd0ca2 /arch/x86/kernel/i8253.c
parentfb8830e72d9bd86f1e7b6886cb1886c391130f86 (diff)
x86: isolate PIC/PIT in/out calls
Rather than remove and/or mangle inb_p/outb_p we want to remove the use of them from inappropriate places. For the PIC/PIT this may eventually depend on 32/64bitism or similar so start by adding inb/outb_pit and inb/outb_pic so that we can make them use any scheme we settle on without disturbing the existing, correct (for ISA), port 0x80 usage. (eg we can make inb_pit use udelay without messing up inb_p). Floppy already does this for the fdc. That really only leaves the CMOS as a core logic item to tackle, and bits of parallel port handling in the chipset layers. Signed-off-by: Alan Cox <alan@redhat.com> Signed-off-by: Ingo Molnar <mingo@elte.hu> Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Diffstat (limited to 'arch/x86/kernel/i8253.c')
-rw-r--r--arch/x86/kernel/i8253.c30
1 files changed, 15 insertions, 15 deletions
diff --git a/arch/x86/kernel/i8253.c b/arch/x86/kernel/i8253.c
index c76fef1ce35..ef62b07b2b4 100644
--- a/arch/x86/kernel/i8253.c
+++ b/arch/x86/kernel/i8253.c
@@ -43,26 +43,26 @@ static void init_pit_timer(enum clock_event_mode mode,
switch(mode) {
case CLOCK_EVT_MODE_PERIODIC:
/* binary, mode 2, LSB/MSB, ch 0 */
- outb_p(0x34, PIT_MODE);
- outb_p(LATCH & 0xff , PIT_CH0); /* LSB */
- outb(LATCH >> 8 , PIT_CH0); /* MSB */
+ outb_pit(0x34, PIT_MODE);
+ outb_pit(LATCH & 0xff , PIT_CH0); /* LSB */
+ outb_pit(LATCH >> 8 , PIT_CH0); /* MSB */
break;
case CLOCK_EVT_MODE_SHUTDOWN:
case CLOCK_EVT_MODE_UNUSED:
if (evt->mode == CLOCK_EVT_MODE_PERIODIC ||
evt->mode == CLOCK_EVT_MODE_ONESHOT) {
- outb_p(0x30, PIT_MODE);
- outb_p(0, PIT_CH0);
- outb_p(0, PIT_CH0);
+ outb_pit(0x30, PIT_MODE);
+ outb_pit(0, PIT_CH0);
+ outb_pit(0, PIT_CH0);
}
pit_disable_clocksource();
break;
case CLOCK_EVT_MODE_ONESHOT:
/* One shot setup */
- outb_p(0x38, PIT_MODE);
pit_disable_clocksource();
+ outb_pit(0x38, PIT_MODE);
break;
case CLOCK_EVT_MODE_RESUME:
@@ -80,8 +80,8 @@ static void init_pit_timer(enum clock_event_mode mode,
static int pit_next_event(unsigned long delta, struct clock_event_device *evt)
{
spin_lock(&i8253_lock);
- outb_p(delta & 0xff , PIT_CH0); /* LSB */
- outb(delta >> 8 , PIT_CH0); /* MSB */
+ outb_pit(delta & 0xff , PIT_CH0); /* LSB */
+ outb_pit(delta >> 8 , PIT_CH0); /* MSB */
spin_unlock(&i8253_lock);
return 0;
@@ -153,15 +153,15 @@ static cycle_t pit_read(void)
* count), it cannot be newer.
*/
jifs = jiffies;
- outb_p(0x00, PIT_MODE); /* latch the count ASAP */
- count = inb_p(PIT_CH0); /* read the latched count */
- count |= inb_p(PIT_CH0) << 8;
+ outb_pit(0x00, PIT_MODE); /* latch the count ASAP */
+ count = inb_pit(PIT_CH0); /* read the latched count */
+ count |= inb_pit(PIT_CH0) << 8;
/* VIA686a test code... reset the latch if count > max + 1 */
if (count > LATCH) {
- outb_p(0x34, PIT_MODE);
- outb_p(LATCH & 0xff, PIT_CH0);
- outb(LATCH >> 8, PIT_CH0);
+ outb_pit(0x34, PIT_MODE);
+ outb_pit(LATCH & 0xff, PIT_CH0);
+ outb_pit(LATCH >> 8, PIT_CH0);
count = LATCH - 1;
}