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[PATCH] m68k/Atari: Interrupt updates

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Misc Atari fixes:
  - initialize correct number of atari irqs
  - silence vbl interrupt until it's used by atafb
  - use mdelay() to read clock if necessary

Signed-off-by: Roman Zippel <zippel@linux-m68k.org>
Signed-off-by: Geert Uytterhoeven <geert@linux-m68k.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
This commit is contained in:
Geert Uytterhoeven 2006-10-09 22:23:31 +02:00 committed by Linus Torvalds
parent da96d0b58a
commit 69961c3752
3 changed files with 15 additions and 4 deletions
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9
arch/m68k/atari/ataints.c
View file

@ -332,6 +332,9 @@ static void atari_shutdown_irq(unsigned int irq)
atari_disable_irq(irq);
atari_turnoff_irq(irq);
m68k_irq_shutdown(irq);
if (irq == IRQ_AUTO_4)
vectors[VEC_INT4] = falcon_hblhandler;
}
static struct irq_controller atari_irq_controller = {
@ -356,7 +359,7 @@ static struct irq_controller atari_irq_controller = {
void __init atari_init_IRQ(void)
{
m68k_setup_user_interrupt(VEC_USER, 192, NULL);
m68k_setup_user_interrupt(VEC_USER, NUM_ATARI_SOURCES - IRQ_USER, NULL);
m68k_setup_irq_controller(&atari_irq_controller, 1, NUM_ATARI_SOURCES - 1);
/* Initialize the MFP(s) */
@ -403,8 +406,10 @@ void __init atari_init_IRQ(void)
* gets overruns)
*/
if (!MACH_IS_HADES)
if (!MACH_IS_HADES) {
vectors[VEC_INT2] = falcon_hblhandler;
vectors[VEC_INT4] = falcon_hblhandler;
}
}
if (ATARIHW_PRESENT(PCM_8BIT) && ATARIHW_PRESENT(MICROWIRE)) {

9
arch/m68k/atari/time.c
View file

@ -16,6 +16,7 @@
#include <linux/init.h>
#include <linux/rtc.h>
#include <linux/bcd.h>
#include <linux/delay.h>
#include <asm/atariints.h>
@ -212,8 +213,12 @@ int atari_tt_hwclk( int op, struct rtc_time *t )
* additionally the RTC_SET bit is set to prevent an update cycle.
*/
while( RTC_READ(RTC_FREQ_SELECT) & RTC_UIP )
schedule_timeout_interruptible(HWCLK_POLL_INTERVAL);
while( RTC_READ(RTC_FREQ_SELECT) & RTC_UIP ) {
if (in_atomic() || irqs_disabled())
mdelay(1);
else
schedule_timeout_interruptible(HWCLK_POLL_INTERVAL);
}
local_irq_save(flags);
RTC_WRITE( RTC_CONTROL, ctrl | RTC_SET );

1
arch/m68k/kernel/ints.c
View file

@ -132,6 +132,7 @@ void __init m68k_setup_user_interrupt(unsigned int vec, unsigned int cnt,
{
int i;
BUG_ON(IRQ_USER + cnt >= NR_IRQS);
m68k_first_user_vec = vec;
for (i = 0; i < cnt; i++)
irq_controller[IRQ_USER + i] = &user_irq_controller;