Davinci: cpintc host map configuration

Host map configuration instructs the interrupt controller to route interrupt
channels to FIQ or IRQ lines.  Currently, DA8xx family of devices leave these
registers at their reset-default values.

TNETV107X however does not have sane reset defaults, and therefore this
architecture needs to reconfigure the host-map such that channels 0 and 1
go to FIQ, and the remaining channels raise IRQs.

This patch adds an optional host map argument to cp_intc_init() for this.

Signed-off-by: Cyril Chemparathy <cyril@ti.com>
Signed-off-by: Kevin Hilman <khilman@deeprootsystems.com>

arch/arm/mach-davinci/board-da830-evm.c

@@ -569,7 +569,7 @@ static __init void da830_evm_irq_init(void)
 	struct davinci_soc_info *soc_info = &davinci_soc_info;
 
 	cp_intc_init((void __iomem *)DA8XX_CP_INTC_VIRT, DA830_N_CP_INTC_IRQ,
-			soc_info->intc_irq_prios);
+			soc_info->intc_irq_prios, NULL);
 }
 
 static void __init da830_evm_map_io(void)

arch/arm/mach-davinci/board-da850-evm.c

@@ -741,7 +741,7 @@ static __init void da850_evm_irq_init(void)
 	struct davinci_soc_info *soc_info = &davinci_soc_info;
 
 	cp_intc_init((void __iomem *)DA8XX_CP_INTC_VIRT, DA850_N_CP_INTC_IRQ,
-			soc_info->intc_irq_prios);
+			soc_info->intc_irq_prios, NULL);
 }
 
 static void __init da850_evm_map_io(void)

arch/arm/mach-davinci/cp_intc.c

@@ -101,7 +101,7 @@ static struct irq_chip cp_intc_irq_chip = {
 };
 
 void __init cp_intc_init(void __iomem *base, unsigned short num_irq,
-			 u8 *irq_prio)
+			 u8 *irq_prio, u32 *host_map)
 {
 	unsigned num_reg	= BITS_TO_LONGS(num_irq);
 	int i;
@@ -157,6 +157,10 @@ void __init cp_intc_init(void __iomem *base, unsigned short num_irq,
 			cp_intc_write(0x0f0f0f0f, CP_INTC_CHAN_MAP(i));
 	}
 
+	if (host_map)
+		for (i = 0; host_map[i] != -1; i++)
+			cp_intc_write(host_map[i], CP_INTC_HOST_MAP(i));
+
 	/* Set up genirq dispatching for cp_intc */
 	for (i = 0; i < num_irq; i++) {
 		set_irq_chip(i, &cp_intc_irq_chip);

arch/arm/mach-davinci/include/mach/cp_intc.h

@@ -52,6 +52,6 @@
 #define CP_INTC_VECTOR_ADDR(n)		(0x2000 + (n << 2))
 
 void __init cp_intc_init(void __iomem *base, unsigned short num_irq,
-			 u8 *irq_prio);
+			 u8 *irq_prio, u32 *host_map);
 
 #endif	/* __ASM_HARDWARE_CP_INTC_H */