When S3C_PM_DEBUG_LED_SMDK is enabled for suspend/resume debugging, the following
compilation error occurs:

arch/arm/mach-s3c64xx/pm.c: In function 's3c_pm_debug_smdkled':
arch/arm/mach-s3c64xx/pm.c:41: error: implicit declaration of function 'gpio_set_value'
arch/arm/mach-s3c64xx/pm.c:41: error: implicit declaration of function 'S3C64XX_GPN'
arch/arm/mach-s3c64xx/pm.c: In function 's3c64xx_pm_init':
arch/arm/mach-s3c64xx/pm.c:184: error: implicit declaration of function 'gpio_request'
arch/arm/mach-s3c64xx/pm.c:188: error: implicit declaration of function 'gpio_direction_output'

Fix the error by including linux/gpio.h
Signed-off-by: NAbhilash Kesavan <a.kesavan@samsung.com>
Signed-off-by: NKukjin Kim <kgene.kim@samsung.com>

There are SoCs where attempting to enter a low power state is ignored,
and the CPU continues executing instructions with all state preserved.
It is over-complex at that point to disable the MMU just to call the
resume path.

Instead, allow the suspend finisher to return error codes to abort
suspend in this circumstance, where the cpu_suspend internals will then
unwind the saved state on the stack.  Also omit the tlb flush as no
changes to the page tables will have happened.
Signed-off-by: NRussell King <rmk+kernel@arm.linux.org.uk>

Move the call to cpu_suspend into C code, and noticing that all the
s3c_cpu_save implementations are now identical, we can move this
into the common samsung code.
Signed-off-by: NRussell King <rmk+kernel@arm.linux.org.uk>

The gpio-bank-X header files of S3C64XX have definitions
which can be substituted by other common GPIO API.
Signed-off-by: NJoonyoung Shim <jy0922.shim@samsung.com>
Signed-off-by: NKyungmin Park <kyungmin.park@samsung.com>
Signed-off-by: NKukjin Kim <kgene.kim@samsung.com>

Use the new wakeup mask synchronisation code to set the
relevant wakeup mask bits.
Signed-off-by: NBen Dooks <ben-linux@fluff.org>

Move the core S3C64XX support to mach-s3c64xx as it is unlikely to be used
outside of this directory. Also move the SoC header files in with it.

This includes the clock, cpu, cpufreq, dma, gpiolib and pll support.
Signed-off-by: NBen Dooks <ben-linux@fluff.org>

Move the register and GPIO definition files from plat-s3c64xx into the
machine include direcotry as they are unlikely to be reused outside
mach-s3c64xx.

This move includes removing the empty <mach/regs-clock.h> and replacing
it with the <plat/regs-clock.h> implementation.
Signed-off-by: NBen Dooks <ben-linux@fluff.org>

fix the following 'make includecheck' warning:

  arch/arm/plat-s3c64xx/pm.c: plat/regs-gpio.h is included more than once.
Signed-off-by: NJaswinder Singh Rajput <jaswinderrajput@gmail.com>
Acked-by: NBen Dooks <ben-linux@fluff.org>
Signed-off-by: NRussell King <rmk+kernel@arm.linux.org.uk>

Move the GPIO suspend/resume support inline with the gpiolib support
so that it will work with both the S3C24XX and S3C64XX series.

The s3c_gpio_chip is extended to have a pm callback and a save block
to keep the state of the GPIO over suspend, and the code from the
s3c24xx implementation is added to a new common file.

The suspend process now uses the list of registered chips to go through
saving and restoring each one as appropriate, using the pm callback to
select the appropriate routine depending on the type of control register
present.

This change also means that any additional GPIO added should not require
changes to the PM.
Signed-off-by: NBen Dooks <ben-linux@fluff.org>

Add the initial support for the S3C64XX based systems to use
suspend-to-RAM to sleep.

Includes basic debugging for use with the SMDK6410 usign the
LEDs on the baseboard.
Signed-off-by: NBen Dooks <ben-linux@fluff.org>