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ARM: pm: add generic CPU suspend/resume support

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This adds core support for saving and restoring CPU coprocessor
registers for suspend/resume support.  This contains support for suspend
with ARM920, ARM926, SA11x0, PXA25x, PXA27x, PXA3xx, V6 and V7 CPUs.
Tested on Assabet and Tegra 2.

Tested-by: Colin Cross <ccross@android.com>
Tested-by: Kukjin Kim <kgene.kim@samsung.com>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
This commit is contained in:
Russell King
2011-02-06 15:48:39 +00:00
parent 753790e713
commit f6b0fa02e8
29 changed files with 522 additions and 33 deletions
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3
arch/arm/include/asm/glue-proc.h
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@@ -256,6 +256,9 @@
#define cpu_dcache_clean_area __glue(CPU_NAME,_dcache_clean_area)
#define cpu_do_switch_mm __glue(CPU_NAME,_switch_mm)
#define cpu_set_pte_ext __glue(CPU_NAME,_set_pte_ext)
#define cpu_suspend_size __glue(CPU_NAME,_suspend_size)
#define cpu_do_suspend __glue(CPU_NAME,_do_suspend)
#define cpu_do_resume __glue(CPU_NAME,_do_resume)
#endif
#endif

7
arch/arm/include/asm/proc-fns.h
View File

@@ -66,6 +66,11 @@ extern struct processor {
* ignore 'ext'.
*/
void (*set_pte_ext)(pte_t *ptep, pte_t pte, unsigned int ext);
/* Suspend/resume */
unsigned int suspend_size;
void (*do_suspend)(void *);
void (*do_resume)(void *);
} processor;
#ifndef MULTI_CPU
@@ -86,6 +91,8 @@ extern void cpu_reset(unsigned long addr) __attribute__((noreturn));
#define cpu_do_switch_mm(pgd,mm) processor.switch_mm(pgd,mm)
#endif
extern void cpu_resume(void);
#include <asm/memory.h>
#ifdef CONFIG_MMU