ARM: OMAP2: Optimize INTC register accesses and enable autoidling

Use virtual addresses directly instead of physical addresses to
avoid having to recalculate the virtual address with every
register access.
Signed-off-by: Juha Yrjola <juha.yrjola@solidboot.com>

arch/arm/mach-omap2/irq.c

@@ -37,7 +37,7 @@ static struct omap_irq_bank {
 } __attribute__ ((aligned(4))) irq_banks[] = {
 	{
 		/* MPU INTC */
-		.base_reg	= OMAP24XX_IC_BASE,
+		.base_reg	= IO_ADDRESS(OMAP24XX_IC_BASE),
 		.nr_irqs	= 96,
 	}, {
 		/* XXX: DSP INTC */
@@ -47,7 +47,7 @@ static struct omap_irq_bank {
 /* XXX: FIQ and additional INTC support (only MPU at the moment) */
 static void omap_ack_irq(unsigned int irq)
 {
-	omap_writel(0x1, irq_banks[0].base_reg + INTC_CONTROL);
+	__raw_writel(0x1, irq_banks[0].base_reg + INTC_CONTROL);
 }
 
 static void omap_mask_irq(unsigned int irq)
@@ -60,7 +60,7 @@ static void omap_mask_irq(unsigned int irq)
 		irq %= 32;
 	}
 
-	omap_writel(1 << irq, irq_banks[0].base_reg + INTC_MIR_SET0 + offset);
+	__raw_writel(1 << irq, irq_banks[0].base_reg + INTC_MIR_SET0 + offset);
 }
 
 static void omap_unmask_irq(unsigned int irq)
@@ -73,7 +73,7 @@ static void omap_unmask_irq(unsigned int irq)
 		irq %= 32;
 	}
 
-	omap_writel(1 << irq, irq_banks[0].base_reg + INTC_MIR_CLEAR0 + offset);
+	__raw_writel(1 << irq, irq_banks[0].base_reg + INTC_MIR_CLEAR0 + offset);
 }
 
 static void omap_mask_ack_irq(unsigned int irq)
@@ -93,17 +93,20 @@ static void __init omap_irq_bank_init_one(struct omap_irq_bank *bank)
 {
 	unsigned long tmp;
 
-	tmp = omap_readl(bank->base_reg + INTC_REVISION) & 0xff;
+	tmp = __raw_readl(bank->base_reg + INTC_REVISION) & 0xff;
 	printk(KERN_INFO "IRQ: Found an INTC at 0x%08lx "
 			 "(revision %ld.%ld) with %d interrupts\n",
 			 bank->base_reg, tmp >> 4, tmp & 0xf, bank->nr_irqs);
 
-	tmp = omap_readl(bank->base_reg + INTC_SYSCONFIG);
+	tmp = __raw_readl(bank->base_reg + INTC_SYSCONFIG);
 	tmp |= 1 << 1;	/* soft reset */
-	omap_writel(tmp, bank->base_reg + INTC_SYSCONFIG);
+	__raw_writel(tmp, bank->base_reg + INTC_SYSCONFIG);
 
-	while (!(omap_readl(bank->base_reg + INTC_SYSSTATUS) & 0x1))
+	while (!(__raw_readl(bank->base_reg + INTC_SYSSTATUS) & 0x1))
 		/* Wait for reset to complete */;
+
+	/* Enable autoidle */
+	__raw_writel(1 << 0, bank->base_reg + INTC_SYSCONFIG);
 }
 
 void __init omap_init_irq(void)