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ARM: shmobile: r8a7740: Add OF support to initialze the GIC 

We add a variant to initalize the interrupt controller in case we describe
the GIC using the Device Tree and not platform data.

Signed-off-by: Bastian Hecht <hechtb+renesas@gmail.com>
Signed-off-by: Simon Horman <horms+renesas@verge.net.au>
This commit is contained in:
Bastian Hecht 2013-04-17 12:34:04 +02:00 committed by Simon Horman
parent c7788792a5
commit f9b4df4a4d
2 changed files with 19 additions and 6 deletions
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1
arch/arm/mach-shmobile/include/mach/r8a7740.h
View File

@ -534,6 +534,7 @@ enum {
extern void r8a7740_meram_workaround(void);
extern void r8a7740_init_irq(void);
extern void r8a7740_init_irq_of(void);
extern void r8a7740_map_io(void);
extern void r8a7740_add_early_devices(void);
extern void r8a7740_add_standard_devices(void);

24
arch/arm/mach-shmobile/intc-r8a7740.c
View File

@ -20,19 +20,15 @@
#include <linux/init.h>
#include <linux/io.h>
#include <linux/irqchip.h>
#include <linux/irqchip/arm-gic.h>
void __init r8a7740_init_irq(void)
static void __init r8a7740_init_irq_common(void)
{
void __iomem *gic_dist_base = ioremap_nocache(0xc2800000, 0x1000);
void __iomem *gic_cpu_base = ioremap_nocache(0xc2000000, 0x1000);
void __iomem *intc_prio_base = ioremap_nocache(0xe6900010, 0x10);
void __iomem *intc_msk_base = ioremap_nocache(0xe6900040, 0x10);
void __iomem *pfc_inta_ctrl = ioremap_nocache(0xe605807c, 0x4);
/* initialize the Generic Interrupt Controller PL390 r0p0 */
gic_init(0, 29, gic_dist_base, gic_cpu_base);
/* route signals to GIC */
iowrite32(0x0, pfc_inta_ctrl);
@ -54,3 +50,19 @@ void __init r8a7740_init_irq(void)
iounmap(intc_msk_base);
iounmap(pfc_inta_ctrl);
}
void __init r8a7740_init_irq_of(void)
{
irqchip_init();
r8a7740_init_irq_common();
}
void __init r8a7740_init_irq(void)
{
void __iomem *gic_dist_base = ioremap_nocache(0xc2800000, 0x1000);
void __iomem *gic_cpu_base = ioremap_nocache(0xc2000000, 0x1000);
/* initialize the Generic Interrupt Controller PL390 r0p0 */
gic_init(0, 29, gic_dist_base, gic_cpu_base);
r8a7740_init_irq_common();
}