ARM: at91: enclose at91_aic_xx calls in IS_ENABLED(CONFIG_OLD_IRQ_AT91) blocks

Enclose at91_aic_xx calls in IS_ENABLED(CONFIG_OLD_IRQ_AT91) blocks in
order to prepare migration to the new AIC driver.

In the new AIC driver the suspend/resume functions are called by the
generic irq framework and are no longer needed in the PM specific code.

Moreover, the new AIC driver no longer exposes the at91_aic_base variable
which is used by the at91_aic_read functions.
Signed-off-by: Boris BREZILLON <boris.brezillon@free-electrons.com>
Signed-off-by: Nicolas Ferre <nicolas.ferre@atmel.com>

arch/arm/mach-at91/pm.c

@@ -206,6 +206,8 @@ static int at91_pm_enter(suspend_state_t state)
 		at91_pinctrl_gpio_suspend();
 	else
 		at91_gpio_suspend();
+
+	if (IS_ENABLED(CONFIG_OLD_IRQ_AT91) && at91_aic_base) {
 		at91_irq_suspend();
 
 		pr_debug("AT91: PM - wake mask %08x, pm state %d\n",
@@ -216,6 +218,7 @@ static int at91_pm_enter(suspend_state_t state)
 						| (at91_get_extern_irq()))
 					& at91_aic_read(AT91_AIC_IMR),
 				state);
+	}
 
 	switch (state) {
 		/*
@@ -280,12 +283,17 @@ static int at91_pm_enter(suspend_state_t state)
 			goto error;
 	}
 
+	if (IS_ENABLED(CONFIG_OLD_IRQ_AT91) && at91_aic_base)
 		pr_debug("AT91: PM - wakeup %08x\n",
-			at91_aic_read(AT91_AIC_IPR) & at91_aic_read(AT91_AIC_IMR));
+			 at91_aic_read(AT91_AIC_IPR) &
+			 at91_aic_read(AT91_AIC_IMR));
 
 error:
 	target_state = PM_SUSPEND_ON;
+
+	if (IS_ENABLED(CONFIG_OLD_IRQ_AT91) && at91_aic_base)
 		at91_irq_resume();
+
 	if (of_have_populated_dt())
 		at91_pinctrl_gpio_resume();
 	else

arch/arm/mach-at91/setup.c

@@ -49,6 +49,7 @@ void __init at91_init_irq_default(void)
 void __init at91_init_interrupts(unsigned int *priority)
 {
 	/* Initialize the AIC interrupt controller */
+	if (IS_ENABLED(CONFIG_OLD_IRQ_AT91))
 		at91_aic_init(priority, at91_boot_soc.extern_irq);
 
 	/* Enable GPIO interrupts */