ACPI: Export interfaces for ioremapping/iounmapping ACPI registers
authorMyron Stowe <mstowe@redhat.com>
Mon, 7 Nov 2011 23:23:34 +0000 (16:23 -0700)
committerLen Brown <len.brown@intel.com>
Tue, 17 Jan 2012 09:35:20 +0000 (04:35 -0500)
commit6f68c91c55ea3576d366797fa8d45e31c4aa79f8
treec896013c1a5d63a6a20c8cc4b68eee53ce24844a
parentbc9ffce27962c0c5fdc6adf74790ea0fcbe4a99c
ACPI: Export interfaces for ioremapping/iounmapping ACPI registers

Export remapping and unmapping interfaces - acpi_os_map_generic_address()
and acpi_os_unmap_generic_address() - for ACPI generic registers that are
backed by memory mapped I/O (MMIO).

The acpi_os_map_generic_address() and acpi_os_unmap_generic_address()
declarations may more properly belong in include/acpi/acpiosxf.h next to
acpi_os_read_memory() but I believe that would require the ACPI CA making
them an official part of the ACPI CA - OS interface.

ACPI Generic Address Structure (GAS) reference (ACPI's fixed/generic
hardware registers use the GAS format):
  ACPI Specification, Revision 4.0, Section 5.2.3.1, "Generic Address
  Structure"

Signed-off-by: Myron Stowe <myron.stowe@redhat.com>
Acked-by: Rafael J. Wysocki <rjw@sisk.pl>
Signed-off-by: Len Brown <len.brown@intel.com>
drivers/acpi/osl.c
include/linux/acpi_io.h