ACPICA: New: acpi_read and acpi_write public interfaces

Changed the acpi_hw_low_level_read and acpi_hw_low_level_write functions to
the public acpi_read and acpi_write to allow direct access to
ACPI registers.  Removed the "width" parameter since the width
can be obtained from the input GAS structure. Updated the FADT
initialization to setup the GAS structures with the proper
widths. Some widths are still hardcoded because many FADTs have
incorrect register lengths.

Signed-off-by: Bob Moore <robert.moore@intel.com
Signed-off-by: Lin Ming <ming.m.lin@intel.com>
Signed-off-by: Len Brown <len.brown@intel.com>

1 files changed, 8 insertions, 6 deletions

diff --git a/include/acpi/acpixf.h b/include/acpi/acpixf.h
index 6d8fb6f..030aeb5 100644
--- a/include/acpi/acpixf.h
+++ b/include/acpi/acpixf.h
@@ -81,11 +81,6 @@ const char *acpi_format_exception(acpi_status exception);
 
 acpi_status acpi_purge_cached_objects(void);
 
-#ifdef ACPI_FUTURE_USAGE
-acpi_status
-acpi_install_initialization_handler(acpi_init_handler handler, u32 function);
-#endif
-
 /*
  * ACPI Memory management
  */
@@ -195,9 +190,12 @@ acpi_status acpi_get_id(acpi_handle object, acpi_owner_id * out_type);
 acpi_status acpi_get_parent(acpi_handle object, acpi_handle * out_handle);
 
 /*
- * Event handler interfaces
+ * Handler interfaces
  */
 acpi_status
+acpi_install_initialization_handler(acpi_init_handler handler, u32 function);
+
+acpi_status
 acpi_install_fixed_event_handler(u32 acpi_event,
 				 acpi_event_handler handler, void *context);
 
@@ -336,6 +334,10 @@ acpi_set_firmware_waking_vector(u32 physical_address);
 acpi_status
 acpi_set_firmware_waking_vector64(u64 physical_address);
 
+acpi_status acpi_read(u32 *value, struct acpi_generic_address *reg);
+
+acpi_status acpi_write(u32 value, struct acpi_generic_address *reg);
+
 acpi_status
 acpi_get_sleep_type_data(u8 sleep_state, u8 * slp_typ_a, u8 * slp_typ_b);