aboutsummaryrefslogtreecommitdiff
diff options
context:
space:
mode:
-rw-r--r--arch/mips/au1000/pb1200/irqmap.c100
1 files changed, 56 insertions, 44 deletions
diff --git a/arch/mips/au1000/pb1200/irqmap.c b/arch/mips/au1000/pb1200/irqmap.c
index bdf00e2a35e..c096be4ed4e 100644
--- a/arch/mips/au1000/pb1200/irqmap.c
+++ b/arch/mips/au1000/pb1200/irqmap.c
@@ -94,51 +94,41 @@ inline void pb1200_disable_irq(unsigned int irq_nr)
bcsr->intclr = 1<<(irq_nr - PB1200_INT_BEGIN);
}
-static unsigned int pb1200_startup_irq( unsigned int irq_nr )
+static unsigned int pb1200_setup_cascade(void)
{
- if (++pb1200_cascade_en == 1)
- {
- request_irq(AU1000_GPIO_7, &pb1200_cascade_handler,
- 0, "Pb1200 Cascade", (void *)&pb1200_cascade_handler );
-#ifdef CONFIG_MIPS_PB1200
- /* We have a problem with CPLD rev3. Enable a workaround */
- if( ((bcsr->whoami & BCSR_WHOAMI_CPLD)>>4) <= 3)
- {
- printk("\nWARNING!!!\n");
- printk("\nWARNING!!!\n");
- printk("\nWARNING!!!\n");
- printk("\nWARNING!!!\n");
- printk("\nWARNING!!!\n");
- printk("\nWARNING!!!\n");
- printk("Pb1200 must be at CPLD rev4. Please have Pb1200\n");
- printk("updated to latest revision. This software will not\n");
- printk("work on anything less than CPLD rev4\n");
- printk("\nWARNING!!!\n");
- printk("\nWARNING!!!\n");
- printk("\nWARNING!!!\n");
- printk("\nWARNING!!!\n");
- printk("\nWARNING!!!\n");
- printk("\nWARNING!!!\n");
- while(1);
- }
-#endif
- }
- pb1200_enable_irq(irq_nr);
+ int err;
+
+ err = request_irq(AU1000_GPIO_7, &pb1200_cascade_handler,
+ 0, "Pb1200 Cascade", &pb1200_cascade_handler);
+ if (err)
+ return err;
+
return 0;
}
-static void pb1200_shutdown_irq( unsigned int irq_nr )
+static unsigned int pb1200_startup_irq(unsigned int irq)
{
- pb1200_disable_irq(irq_nr);
- if (--pb1200_cascade_en == 0)
- {
- free_irq(AU1000_GPIO_7, &pb1200_cascade_handler );
+ if (++pb1200_cascade_en == 1) {
+ int res;
+
+ res = pb1200_setup_cascade();
+ if (res)
+ return res;
}
- return;
+
+ pb1200_enable_irq(irq);
+
+ return 0;
}
-static struct irq_chip external_irq_type =
+static void pb1200_shutdown_irq(unsigned int irq)
{
+ pb1200_disable_irq(irq);
+ if (--pb1200_cascade_en == 0)
+ free_irq(AU1000_GPIO_7, &pb1200_cascade_handler);
+}
+
+static struct irq_chip external_irq_type = {
#ifdef CONFIG_MIPS_PB1200
.name = "Pb1200 Ext",
#endif
@@ -155,16 +145,38 @@ static struct irq_chip external_irq_type =
void _board_init_irq(void)
{
- int irq_nr;
+ unsigned int irq;
- for (irq_nr = PB1200_INT_BEGIN; irq_nr <= PB1200_INT_END; irq_nr++)
- {
- set_irq_chip_and_handler(irq_nr, &external_irq_type,
+#ifdef CONFIG_MIPS_PB1200
+ /* We have a problem with CPLD rev3. Enable a workaround */
+ if (((bcsr->whoami & BCSR_WHOAMI_CPLD) >> 4) <= 3) {
+ printk("\nWARNING!!!\n");
+ printk("\nWARNING!!!\n");
+ printk("\nWARNING!!!\n");
+ printk("\nWARNING!!!\n");
+ printk("\nWARNING!!!\n");
+ printk("\nWARNING!!!\n");
+ printk("Pb1200 must be at CPLD rev4. Please have Pb1200\n");
+ printk("updated to latest revision. This software will not\n");
+ printk("work on anything less than CPLD rev4\n");
+ printk("\nWARNING!!!\n");
+ printk("\nWARNING!!!\n");
+ printk("\nWARNING!!!\n");
+ printk("\nWARNING!!!\n");
+ printk("\nWARNING!!!\n");
+ printk("\nWARNING!!!\n");
+ panic("Game over. Your score is 0.");
+ }
+#endif
+
+ for (irq = PB1200_INT_BEGIN; irq <= PB1200_INT_END; irq++) {
+ set_irq_chip_and_handler(irq, &external_irq_type,
handle_level_irq);
- pb1200_disable_irq(irq_nr);
+ pb1200_disable_irq(irq);
}
- /* GPIO_7 can not be hooked here, so it is hooked upon first
- request of any source attached to the cascade */
+ /*
+ * GPIO_7 can not be hooked here, so it is hooked upon first
+ * request of any source attached to the cascade
+ */
}
-