diff options
author | Will Deacon <will.deacon@arm.com> | 2012-07-06 15:46:45 +0100 |
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committer | Russell King <rmk+kernel@arm.linux.org.uk> | 2012-07-09 17:42:23 +0100 |
commit | 923df96b9f31b7d08d8438ff9677326d9537accf (patch) | |
tree | 3df937a0431a2ae0500ae011f5742a28611490fa /arch/arm/mach-imx/mach-pcm043.c | |
parent | f8f5701bdaf9134b1f90e5044a82c66324d2073f (diff) |
ARM: 7451/1: arch timer: implement read_current_timer and get_cycles
This patch implements read_current_timer using the architected timers
when they are selected via CONFIG_ARM_ARCH_TIMER. If they are detected
not to be usable at runtime, we return -ENXIO to the caller.
Furthermore, if read_current_timer is exported then we can implement
get_cycles in terms of it for use as both an entropy source and for
implementing __udelay and friends.
Tested-by: Shinya Kuribayashi <shinya.kuribayashi.px@renesas.com>
Reviewed-by: Stephen Boyd <sboyd@codeaurora.org>
Signed-off-by: Will Deacon <will.deacon@arm.com>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
Diffstat (limited to 'arch/arm/mach-imx/mach-pcm043.c')
0 files changed, 0 insertions, 0 deletions