[ARM] 4488/1: pxa: move pxa25x/pxa27x specific code out of pm.c
1. introduce a structure pxa_cpu_pm_fns for pxa25x/pxa27x specific
operations as follows:
struct pxa_cpu_pm_fns {
int save_size;
void (*save)(unsigned long *);
void (*restore)(unsigned long *);
int (*valid)(suspend_state_t state);
void (*enter)(suspend_state_t state);
}
2. processor specific registers saving and restoring are performed
by calling the corresponding (*save) and (*restore)
3. pxa_cpu_pm_fns->save_size should be initialized to the required
size for processor specific registers saving, the allocated
memory address will be passed to (*save) and (*restore)
memory allocation happens early in pxa_pm_init(), and save_size
should be assigned prior to this (which is usually true, since
pxa_pm_init() happens in device_initcall()
4. there're some redundancies for those SLEEP_SAVE_XXX and related
macros, will be fixed later, one way possible is for the system
devices to handle the specific registers saving and restoring
Signed-off-by: eric miao <eric.y.miao@gmail.com>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
diff --git a/include/asm-arm/arch-pxa/pm.h b/include/asm-arm/arch-pxa/pm.h
index 52243a6..62b6900 100644
--- a/include/asm-arm/arch-pxa/pm.h
+++ b/include/asm-arm/arch-pxa/pm.h
@@ -7,5 +7,14 @@
*
*/
-extern int pxa_pm_prepare(suspend_state_t state);
+struct pxa_cpu_pm_fns {
+ int save_size;
+ void (*save)(unsigned long *);
+ void (*restore)(unsigned long *);
+ int (*valid)(suspend_state_t state);
+ void (*enter)(suspend_state_t state);
+};
+
+extern struct pxa_cpu_pm_fns *pxa_cpu_pm_fns;
+
extern int pxa_pm_enter(suspend_state_t state);