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| author | James Hogan <james.hogan@imgtec.com> | 2014-03-04 10:25:45 +0000 |
|---|---|---|
| committer | Paul Burton <paul.burton@imgtec.com> | 2014-05-02 16:39:10 +0100 |
| commit | 74e91335190c628b870c69cff8360d23707b1f53 (patch) | |
| tree | 255cb7709b6123938c057f206522f00e2b450d9f /arch/mips/kernel/pm.c | |
| parent | eaa38d6343adbb5070c27af29aeeb3df126f47f2 (diff) | |
| download | linux-74e91335190c628b870c69cff8360d23707b1f53.tar.gz | |
MIPS: PM: Implement PM helper macros
Implement assembler helper macros in asm/pm.h for platform code to use for saving context across low power states - for example suspend to RAM or powered down cpuidle states. Macros are provided for saving and restoring the main CPU context used by C code and doing important configuration which must be done very early during resume. Notably EVA needs segmentation control registers to be restored before the stack or dynamically allocated memory is accessed, so that state is saved in global data. Signed-off-by: James Hogan <james.hogan@imgtec.com> Signed-off-by: Paul Burton <paul.burton@imgtec.com>
Diffstat (limited to 'arch/mips/kernel/pm.c')
| -rw-r--r-- | arch/mips/kernel/pm.c | 4 |
1 files changed, 4 insertions, 0 deletions
diff --git a/arch/mips/kernel/pm.c b/arch/mips/kernel/pm.c index 112903f36b89..fefdf39d3df3 100644 --- a/arch/mips/kernel/pm.c +++ b/arch/mips/kernel/pm.c @@ -15,8 +15,12 @@ #include <asm/dsp.h> #include <asm/fpu.h> #include <asm/mmu_context.h> +#include <asm/pm.h> #include <asm/watch.h> +/* Used by PM helper macros in asm/pm.h */ +struct mips_static_suspend_state mips_static_suspend_state; + /** * mips_cpu_save() - Save general CPU state. * Ensures that general CPU context is saved, notably FPU and DSP. |