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Commit 3e2abc5a authored by Seth Forshee's avatar Seth Forshee Committed by Matthew Garrett
Browse files

ACPI: EC: Add ec_get_handle() 



toshiba_acpi needs to execute an AML method within the EC namespace
to make hotkeys work on some platforms. Provide an interface to
allow it to easily get a handle to the EC namespace for this purpose.

Signed-off-by: default avatarSeth Forshee <seth.forshee@canonical.com>
Signed-off-by: default avatarMatthew Garrett <mjg@redhat.com>
parent 7714567c

drivers/acpi/ec.c

+10 −0
Original line number Diff line number Diff line
@@ -445,6 +445,16 @@ int ec_transaction(u8 command, 


EXPORT_SYMBOL(ec_transaction);



/* Get the handle to the EC device */

acpi_handle ec_get_handle(void)

{

	if (!first_ec)

		return NULL;

	return first_ec->handle;

}



EXPORT_SYMBOL(ec_get_handle);



void acpi_ec_block_transactions(void)

{

	struct acpi_ec *ec = first_ec;

include/linux/acpi.h

+1 −0
Original line number Diff line number Diff line
@@ -151,6 +151,7 @@ extern int ec_write(u8 addr, u8 val); 
extern int ec_transaction(u8 command,

                          const u8 *wdata, unsigned wdata_len,

                          u8 *rdata, unsigned rdata_len);

extern acpi_handle ec_get_handle(void);



#if defined(CONFIG_ACPI_WMI) || defined(CONFIG_ACPI_WMI_MODULE)