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ARM: arch_timer: add support to configure and enable event stream

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This patch adds support for configuring the event stream frequency
and enabling it.

It also adds the hwcaps definitions to the user to detect this event
stream feature.

Cc: Russell King <linux@arm.linux.org.uk>
Cc: Lorenzo Pieralisi <lorenzo.pieralisi@arm.com>
Acked-by: Catalin Marinas <catalin.marinas@arm.com>
Acked-by: Will Deacon <will.deacon@arm.com>
Acked-by: Olof Johansson <olof@lixom.net>
Signed-off-by: Sudeep KarkadaNagesha <sudeep.karkadanagesha@arm.com>
This commit is contained in:
Sudeep KarkadaNagesha
2013-08-13 14:30:32 +01:00
parent 28061758dc
commit e9faebc66e
3 changed files with 27 additions and 4 deletions
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1
arch/arm/include/uapi/asm/hwcap.h
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@@ -26,5 +26,6 @@
#define HWCAP_VFPD32 (1 << 19) /* set if VFP has 32 regs (not 16) */
#define HWCAP_IDIV (HWCAP_IDIVA | HWCAP_IDIVT)
#define HWCAP_LPAE (1 << 20)
#define HWCAP_EVTSTRM (1 << 21)
#endif /* _UAPI__ASMARM_HWCAP_H */