diff options
| author |   Bob Moore <Robert.Moore@intel.com> | 2014-09-23 10:35:47 +0800 |
|---|---|---|
| committer |   Rafael J. Wysocki <rafael.j.wysocki@intel.com> | 2014-09-24 22:53:46 +0200 |
| commit | 75ec6e55f1384548311a13ce4fcb39c516053314 (patch) | |
| tree | 0165f3ba0f3fe31a1d27d17e4fee1a379df83c40 /drivers/acpi/acpica/exprep.c | |
| parent | Linux 3.17-rc6 (diff) | |
| download | linux-dev-75ec6e55f1384548311a13ce4fcb39c516053314.tar.xz linux-dev-75ec6e55f1384548311a13ce4fcb39c516053314.zip | |
ACPICA: Update to GPIO region handler interface.
Changes to correct several GPIO issues:
1) The update_rule in a GPIO field definition is now ignored;
a read-modify-write operation is never performed for GPIO fields.
(Internally, this means that the field assembly/disassembly
code is completely bypassed for GPIO.)
2) The Address parameter passed to a GPIO region handler is
now the bit offset of the field from a previous Connection()
operator. Thus, it becomes a "Pin Number Index" into the
Connection() resource descriptor.
3) The bit_width parameter passed to a GPIO region handler is
now the exact bit width of the GPIO field. Thus, it can be
interpreted as "number of pins".
Overall, we can now say that the region handler interface
to GPIO handlers is a raw "bit/pin" addressed interface, not
a byte-addressed interface like the system_memory handler interface.
Signed-off-by: Bob Moore <robert.moore@intel.com>
Signed-off-by: Lv Zheng <lv.zheng@intel.com>
Cc: 3.15+ <stable@vger.kernel.org> # 3.15+
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
Diffstat (limited to '')
| -rw-r--r-- | drivers/acpi/acpica/exprep.c | 2 |
1 files changed, 2 insertions, 0 deletions
diff --git a/drivers/acpi/acpica/exprep.c b/drivers/acpi/acpica/exprep.c index ee3f872870bc..118e942005e5 100644 --- a/drivers/acpi/acpica/exprep.c +++ b/drivers/acpi/acpica/exprep.c @@ -484,6 +484,8 @@ acpi_status acpi_ex_prep_field_value(struct acpi_create_field_info *info) obj_desc->field.resource_length = info->resource_length; } + obj_desc->field.pin_number_index = info->pin_number_index; + /* Allow full data read from EC address space */ if ((obj_desc->field.region_obj->region.space_id == |