This patch adds support AFTR(ARM OFF TOP RUNNING) mode in
cpuidle driver. L2 cache keeps their data in this mode.
This patch ports the code to the latest interfaces to
save/restore CPU state inclusive of CPU PM notifiers, l2
resume and cpu_suspend/resume.
Signed-off-by: NJaecheol Lee <jc.lee@samsung.com>
Signed-off-by: NLorenzo Pieralisi <lorenzo.pieralisi@arm.com>
Signed-off-by: NAmit Daniel Kachhap <amit.kachhap@linaro.org>
[kgene.kim@samsung.com: fixed for non-smp as per Tushar's pointing out]
Signed-off-by: NKukjin Kim <kgene.kim@samsung.com>

  CC      arch/arm/mach-exynos/cpuidle.o
arch/arm/mach-exynos/cpuidle.c:36: error: 'THIS_MODULE' undeclared here (not in a function)
arch/arm/mach-exynos/cpuidle.c: In function 'exynos4_enter_idle':
arch/arm/mach-exynos/cpuidle.c:42: error: storage size of 'before' isn't known
arch/arm/mach-exynos/cpuidle.c:42: error: storage size of 'after' isn't known
arch/arm/mach-exynos/cpuidle.c:46: error: implicit declaration of function 'do_gettimeofday'
arch/arm/mach-exynos/cpuidle.c:52: error: 'USEC_PER_SEC' undeclared (first use in this function)
arch/arm/mach-exynos/cpuidle.c:52: error: (Each undeclared identifier is reported only once
arch/arm/mach-exynos/cpuidle.c:52: error: for each function it appears in.)
arch/arm/mach-exynos/cpuidle.c:42: warning: unused variable 'after'
arch/arm/mach-exynos/cpuidle.c:42: warning: unused variable 'before'
make[1]: *** [arch/arm/mach-exynos/cpuidle.o] Error 1
Signed-off-by: NKyungmin Park <kyungmin.park@samsung.com>
[kgene.kim@samsung.com: Fixed as per Stephen's suggestion]
Signed-off-by: NKukjin Kim <kgene.kim@samsung.com>

The arch/arm/mach-exynos4 directory (CONFIG_ARCH_EXYNOS4) has
made for plaforms based on EXYNOS4 SoCs. But since upcoming
Samsung's SoCs such as EXYNOS5 (ARM Cortex A15) can reuse most
codes in current mach-exynos4, one mach-exynos directory will
be used for them.

This patch changes to CONFIG_ARCH_EXYNOS (arch/arm/mach-exynos)
but keeps original CONFIG_ARCH_EXYNOS4 in mach-exynos/Kconfig to
avoid changing in driver side.

Cc: Arnd Bergmann <arnd@arndb.de>
Cc: Russell King <rmk+kernel@arm.linux.org.uk>
Signed-off-by: NKukjin Kim <kgene.kim@samsung.com>

This patch supports cpuidle framework for EXYNOS4210. Currently,
Only one idle state is possible to use, but more idle states can
be added following by this patch.
Signed-off-by: NJaecheol Lee <jc.lee@samsung.com>
Signed-off-by: NKukjin Kim <kgene.kim@samsung.com>