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x86/platform: Add a wallclock_init func to x86_platforms ops

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Some wall clock devices use MMIO based HW register, this new
function will give them a chance to do some initialization work
before their get/set_time service get called.

Signed-off-by: Feng Tang <feng.tang@intel.com>
Signed-off-by: Jacob Pan <jacob.jun.pan@linux.intel.com>
Signed-off-by: Alan Cox <alan@linux.intel.com>
Signed-off-by: Dirk Brandewie <dirk.brandewie@gmail.com>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
This commit is contained in:
Feng Tang
2011-11-10 13:42:02 +00:00
committed by Ingo Molnar
parent 66f5ddf30a
commit cf8ff6b6ab
3 changed files with 6 additions and 0 deletions
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arch/x86/include/asm/x86_init.h
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@@ -152,6 +152,7 @@ struct x86_cpuinit_ops {
/**
* struct x86_platform_ops - platform specific runtime functions
* @calibrate_tsc: calibrate TSC
* @wallclock_init: init the wallclock device
* @get_wallclock: get time from HW clock like RTC etc.
* @set_wallclock: set time back to HW clock
* @is_untracked_pat_range exclude from PAT logic
@@ -160,6 +161,7 @@ struct x86_cpuinit_ops {
*/
struct x86_platform_ops {
unsigned long (*calibrate_tsc)(void);
void (*wallclock_init)(void);
unsigned long (*get_wallclock)(void);
int (*set_wallclock)(unsigned long nowtime);
void (*iommu_shutdown)(void);