ARM: imx: pm-imx27: Include "common.h"

Since commit 879c0e5e0ac7 ("ARM: imx: Remove i.MX27 board files")
the following W=1 build warning is seen:

arch/arm/mach-imx/pm-imx27.c:40:13: warning: no previous prototype for 'imx27_pm_init' [-Wmissing-prototypes]

Fix it by including the "common.h" header file, which
contains the prototype for imx27_pm_init().

Fixes: 879c0e5e0ac7 ("ARM: imx: Remove i.MX27 board files")
Reported-by: kernel test robot <lkp@intel.com>
Signed-off-by: Fabio Estevam <festevam@gmail.com>
Signed-off-by: Shawn Guo <shawnguo@kernel.org>

ARM: imx27: Retrieve the CCM base address from devicetree

Now that imx27 has been converted to a devicetree-only platform,
retrieve the CCM base address from devicetree.

Signed-off-by: Fabio Estevam <festevam@gmail.com>
Acked-by: Arnd Bergmann <arnd@arndb.de>
Signed-off-by: Shawn Guo <shawnguo@kernel.org>

ARM: imx: rework mx27_pm_init() call

mx27_pm_init() uses its own initcall, unlike all of the other
functions like it. Replacing the initcall with a .init_late()
callback makes imx27 more like the others and lets us remove
the last caller of cpu_is_mx27().

Signed-off-by: Arnd Bergmann <arnd@arndb.de>
Signed-off-by: Shawn Guo <shawnguo@kernel.org>

ARM: imx: use endian-safe readl/readw/writel/writew

Instead of __raw_*, define imx_* to *_relaxed and use those.

Using imx_* was requested by Arnd because *_relaxed tends to
indicate that the code was carefully reviewed to not require
any synchronisation and otherwise be safe, which isn't the
case here with the automatic conversion.

The conversion itself was done using the following spatch
(since that automatically adjusts the coding style unlike
a simple search&replace).

@@
expression E1, E2;
@@
-__raw_writel(E1, E2)
+imx_writel(E1, E2)
@@
expression E1, E2;
@@
-__raw_writew(E1, E2)
+imx_writew(E1, E2)
@@
expression E1;
@@
-__raw_readl(E1)
+imx_readl(E1)
@@
expression E1;
@@
-__raw_readw(E1)
+imx_readw(E1)

Signed-off-by: Johannes Berg <johannes@sipsolutions.net>
Signed-off-by: Shawn Guo <shawnguo@kernel.org>

ARM: imx: include hardware.h rather than mach/hardware.h

It moves a bunch of header files included in hardware.h and itself
from mach-imx/include/mach to mach-imx, and updates users to include
hardware.h rather than mach/hardware.h. The files in mach-imx/devices
will need to include "../hardware.h".

Signed-off-by: Shawn Guo <shawn.guo@linaro.org>
Acked-by: Sascha Hauer <s.hauer@pengutronix.de>
Acked-by: Arnd Bergmann <arnd@arndb.de>

ARM: plat-mxc: hook special idle handlers to arm_pm_idle

... and remove redundant include of <mach/system.h>.

Signed-off-by: Nicolas Pitre <nicolas.pitre@linaro.org>

arm/imx: explicitly includes mach/hardware.h in pm-imx27.c

The pm-imx27.c references a number of things requiring the explicit
inclusion of mach/hardware.h. Otherwise, when indirect inclusion
to mach/hardware.h gets cleaned up, we will see the following
compile error.

CC arch/arm/mach-imx/pm-imx27.o
arch/arm/mach-imx/pm-imx27.c: In function ‘mx27_suspend_enter’:
arch/arm/mach-imx/pm-imx27.c:22:3: error: implicit declaration of function ‘IOMEM’
arch/arm/mach-imx/pm-imx27.c:22:3: error: implicit declaration of function ‘IMX_IO_P2V’
arch/arm/mach-imx/pm-imx27.c: In function ‘mx27_pm_init’:
arch/arm/mach-imx/pm-imx27.c:42:2: error: implicit declaration of function ‘cpu_is_mx27’

Signed-off-by: Shawn Guo <shawn.guo@linaro.org>
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>

arm/imx: remove cpu_is_xxx() from arch_idle()

This patch adds an idle hook imx_idle to be called in arch_idle().
Any soc that needs a customized idle implementation other than
cpu_do_idle() can set up this hook in soc specific call.

Signed-off-by: Shawn Guo <shawn.guo@linaro.org>
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>

ARM i.MX27 pm: return gracefully on different socs

Code called from an initcall can be maybe called for
machines it's not intended for. So check for valid
machines and return gracefully if an incompatible machine
is found.

Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>

suspend: constify platform_suspend_ops

While at it, fix two checkpatch errors.
Several non-const struct instances constified by this patch were added after
the introduction of platform_suspend_ops in checkpatch.pl's list of "should
be const" structs (79404849e90a41ea2109bd0e2f7c7164b0c4ce73).

Patch against mainline.
Inspired by hunks of the grsecurity patch, updated for newer kernels.

Signed-off-by: Lionel Debroux <lionel_debroux@yahoo.fr>
Acked-by: Ingo Molnar <mingo@elte.hu>
Signed-off-by: Jiri Kosina <jkosina@suse.cz>