amlogic-aml8726-mx-kernel/arch/arm/mach-footbridge/common.h

extern struct sys_timer footbridge_timer;
extern struct sys_timer isa_timer;

extern void isa_rtc_init(void);

extern void footbridge_map_io(void);
extern void footbridge_init_irq(void);

extern void isa_init_irq(unsigned int irq);