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| author |   Mika Westerberg <mika.westerberg@linux.intel.com> | 2020-02-12 17:59:39 +0300 |
|---|---|---|
| committer |   Rafael J. Wysocki <rafael.j.wysocki@intel.com> | 2020-02-13 23:51:30 +0100 |
| commit | 1dade3a7048ccfc675650cd2cf13d578b095e5fb (patch) | |
| tree | 2a34e22fe926489f057b0bc92182cf87ae49b773 /include/acpi/actypes.h | |
| parent | ACPI: watchdog: Allow disabling WDAT at boot (diff) | |
| download | linux-dev-1dade3a7048ccfc675650cd2cf13d578b095e5fb.tar.xz linux-dev-1dade3a7048ccfc675650cd2cf13d578b095e5fb.zip | |
ACPICA: Introduce ACPI_ACCESS_BYTE_WIDTH() macro
Sometimes it is useful to find the access_width field value in bytes and
not in bits so add a helper that can be used for this purpose.
Suggested-by: Jean Delvare <jdelvare@suse.de>
Signed-off-by: Mika Westerberg <mika.westerberg@linux.intel.com>
Reviewed-by: Jean Delvare <jdelvare@suse.de>
Cc: 4.16+ <stable@vger.kernel.org> # 4.16+
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
Diffstat (limited to '')
| -rw-r--r-- | include/acpi/actypes.h | 3 |
1 files changed, 2 insertions, 1 deletions
diff --git a/include/acpi/actypes.h b/include/acpi/actypes.h index a2583c2bc054..4defed58ea33 100644 --- a/include/acpi/actypes.h +++ b/include/acpi/actypes.h @@ -532,11 +532,12 @@ typedef u64 acpi_integer; strnlen (a, ACPI_NAMESEG_SIZE) == ACPI_NAMESEG_SIZE) /* - * Algorithm to obtain access bit width. + * Algorithm to obtain access bit or byte width. * Can be used with access_width of struct acpi_generic_address and access_size of * struct acpi_resource_generic_register. */ #define ACPI_ACCESS_BIT_WIDTH(size) (1 << ((size) + 2)) +#define ACPI_ACCESS_BYTE_WIDTH(size) (1 << ((size) - 1)) /******************************************************************************* * |