diff options
| author | Lan Tianyu <tianyu.lan@intel.com> | 2013-06-05 02:27:50 +0000 |
|---|---|---|
| committer | Rafael J. Wysocki <rafael.j.wysocki@intel.com> | 2013-06-27 21:35:37 +0200 |
| commit | 2fa97feb4406c546b52e35b6b6c50cb8f63425d2 (patch) | |
| tree | 48dbba1a1f9e6e7e9035030e605bdeb410df0d2f /drivers/acpi/internal.h | |
| parent | 358b4b35c8fa97a83c4d476cbd0830205504d798 (diff) | |
ACPI: Add CMOS RTC Operation Region handler support
On HP Folio 13-2000, the BIOS defines a CMOS RTC Operation Region and
the EC's _REG methord accesses that region. Thus an appropriate
address space handler must be registered for that region before the
EC driver is loaded.
Introduce a mechanism for adding CMOS RTC address space handlers.
Register an ACPI scan handler for CMOS RTC devices such that, when
a device of that kind is detected during an ACPI namespace scan, a
common CMOS RTC operation region address space handler will be
installed for it.
References: https://bugzilla.kernel.org/show_bug.cgi?id=54621
Reported-and-tested-by: Stefan Nagy <public@stefan-nagy.at>
Signed-off-by: Lan Tianyu <tianyu.lan@intel.com>
Cc: 3.9+ <stable@vger.kernel.org>
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
Diffstat (limited to 'drivers/acpi/internal.h')
| -rw-r--r-- | drivers/acpi/internal.h | 5 |
1 files changed, 5 insertions, 0 deletions
diff --git a/drivers/acpi/internal.h b/drivers/acpi/internal.h index 297cbf456f86..4163d4ba0175 100644 --- a/drivers/acpi/internal.h +++ b/drivers/acpi/internal.h @@ -45,6 +45,11 @@ void acpi_memory_hotplug_init(void); #else static inline void acpi_memory_hotplug_init(void) {} #endif +#ifdef CONFIG_X86 +void acpi_cmos_rtc_init(void); +#else +static inline void acpi_cmos_rtc_init(void) {} +#endif void acpi_sysfs_add_hotplug_profile(struct acpi_hotplug_profile *hotplug, const char *name); |