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, 4 insertions, 10 deletions

diff --git a/drivers/acpi/events/evgpeblk.c b/drivers/acpi/events/evgpeblk.c
index 2872be2b9be5..488503ffcd3e 100644
--- a/drivers/acpi/events/evgpeblk.c
+++ b/drivers/acpi/events/evgpeblk.c
@@ -830,10 +830,8 @@ acpi_ev_create_gpe_info_blocks(struct acpi_gpe_block_info *gpe_block)
                     ACPI_GPE_REGISTER_WIDTH;
                 this_register->enable_address.bit_width =
                     ACPI_GPE_REGISTER_WIDTH;
-                this_register->status_address.bit_offset =
-                    ACPI_GPE_REGISTER_WIDTH;
-                this_register->enable_address.bit_offset =
-                    ACPI_GPE_REGISTER_WIDTH;
+                this_register->status_address.bit_offset = 0;
+                this_register->enable_address.bit_offset = 0;
 
                 /* Init the event_info for each GPE within this register */
 
@@ -846,18 +844,14 @@ acpi_ev_create_gpe_info_blocks(struct acpi_gpe_block_info *gpe_block)
 
                 /* Disable all GPEs within this register */
 
-                status = acpi_hw_low_level_write(ACPI_GPE_REGISTER_WIDTH, 0x00,
-                                                 &this_register->
-                                                 enable_address);
+                status = acpi_write(0x00, &this_register->enable_address);
                 if (ACPI_FAILURE(status)) {
                         goto error_exit;
                 }
 
                 /* Clear any pending GPE events within this register */
 
-                status = acpi_hw_low_level_write(ACPI_GPE_REGISTER_WIDTH, 0xFF,
-                                                 &this_register->
-                                                 status_address);
+                status = acpi_write(0xFF, &this_register->status_address);
                 if (ACPI_FAILURE(status)) {
                         goto error_exit;
                 }