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authorLan Tianyu <tianyu.lan@intel.com>2013-06-05 06:27:50 +0400
committerRafael J. Wysocki <rafael.j.wysocki@intel.com>2013-06-27 23:35:37 +0400
commit2fa97feb4406c546b52e35b6b6c50cb8f63425d2 (patch)
tree48dbba1a1f9e6e7e9035030e605bdeb410df0d2f /drivers/acpi/internal.h
parent358b4b35c8fa97a83c4d476cbd0830205504d798 (diff)
downloadlinux-2fa97feb4406c546b52e35b6b6c50cb8f63425d2.tar.xz
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.h5
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);