omap: Use separate init_irq functions to avoid cpu_is_omap tests early

This allows us to remove cpu_is_omap calls from init_irq functions.
There should not be any need for cpu_is_omap calls as at this point.
During the timer init we only care about SoC generation, and not about
subrevisions.

The main reason for the patch is that we want to initialize only
minimal omap specific code from the init_early call.

Signed-off-by: Tony Lindgren <tony@atomide.com>
Reviewed-by: Kevin Hilman <khilman@ti.com>

1 files changed, 21 insertions, 11 deletions

diff --git a/arch/arm/mach-omap2/irq.c b/arch/arm/mach-omap2/irq.c
index 3af2b7a1045e..3a12f7586a4c 100644
--- a/arch/arm/mach-omap2/irq.c
+++ b/arch/arm/mach-omap2/irq.c
@@ -141,25 +141,20 @@ omap_alloc_gc(void __iomem *base, unsigned int irq_start, unsigned int num)
 				IRQ_NOREQUEST | IRQ_NOPROBE, 0);
 }
 
-void __init omap_init_irq(void)
+static void __init omap_init_irq(u32 base, int nr_irqs)
 {
 	unsigned long nr_of_irqs = 0;
 	unsigned int nr_banks = 0;
 	int i, j;
 
+	omap_irq_base = ioremap(base, SZ_4K);
+	if (WARN_ON(!omap_irq_base))
+		return;
+
 	for (i = 0; i < ARRAY_SIZE(irq_banks); i++) {
-		unsigned long base = 0;
 		struct omap_irq_bank *bank = irq_banks + i;
 
-		if (cpu_is_omap24xx())
-			base = OMAP24XX_IC_BASE;
-		else if (cpu_is_omap34xx())
-			base = OMAP34XX_IC_BASE;
-
-		BUG_ON(!base);
-
-		if (cpu_is_ti816x())
-			bank->nr_irqs = 128;
+		bank->nr_irqs = nr_irqs;
 
 		/* Static mapping, never released */
 		bank->base_reg = ioremap(base, SZ_4K);
@@ -181,6 +176,21 @@ void __init omap_init_irq(void)
 	       nr_of_irqs, nr_banks, nr_banks > 1 ? "s" : "");
 }
 
+void __init omap2_init_irq(void)
+{
+	omap_init_irq(OMAP24XX_IC_BASE, 96);
+}
+
+void __init omap3_init_irq(void)
+{
+	omap_init_irq(OMAP34XX_IC_BASE, 96);
+}
+
+void __init ti816x_init_irq(void)
+{
+	omap_init_irq(OMAP34XX_IC_BASE, 128);
+}
+
 #ifdef CONFIG_ARCH_OMAP3
 static struct omap3_intc_regs intc_context[ARRAY_SIZE(irq_banks)];