31 lines
590 B
C
31 lines
590 B
C
/*
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* Copyright (C) 2013 Jean-Christophe PLAGNIOL-VILLARD <plagnio@jcrosoft.com>
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*
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* GPLv2 only
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*/
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#ifndef __AMBA_SP804_H__
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#define __AMBA_SP804_H__
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#include <linux/amba/bus.h>
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#include <sizes.h>
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#define AMBA_ARM_SP804_ID 0x00141804
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#define AMBA_ARM_SP804_ID_MASK 0x00ffffff
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static inline bool amba_is_arm_sp804(void __iomem *base)
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{
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u32 pid, cid;
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u32 size = SZ_4K;
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cid = amba_device_get_cid(base, size);
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if (cid != AMBA_CID)
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return false;
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pid = amba_device_get_pid(base, size);
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return (pid & AMBA_ARM_SP804_ID_MASK) == AMBA_ARM_SP804_ID;
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}
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#endif /* __AMBA_SP804_H__ */
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