diff options
| author | Suravee Suthikulpanit <Suravee.Suthikulpanit@amd.com> | 2015-07-01 14:44:04 +0800 |
|---|---|---|
| committer | Rafael J. Wysocki <rafael.j.wysocki@intel.com> | 2015-07-01 23:17:53 +0200 |
| commit | f65358e5724890ef473d28762f6de0f3284b146e (patch) | |
| tree | f061b692bf48756d4b4c9cad28419507129c59cb /drivers/acpi/acpica/exutils.c | |
| parent | cbc823405a48c93a6e98bb97ccdcb23ae034ab93 (diff) | |
ACPICA: Utilities: Add _CLS processing
ACPICA commit 9a2b638acb3a7215209432e070c6bd0312374229
ACPI Device object often contains a _CLS object to supply PCI-defined class
code for the device. This patch introduces logic to process the _CLS
object. Suravee Suthikulpanit, Lv Zheng.
Link: https://github.com/acpica/acpica/commit/9a2b638a
Acked-by: Mika Westerberg <mika.westerberg@linux.intel.com>
Reviewed-by: Hanjun Guo <hanjun.guo@linaro.org>
Signed-off-by: Suravee Suthikulpanit <Suravee.Suthikulpanit@amd.com>
Signed-off-by: Lv Zheng <lv.zheng@intel.com>
Signed-off-by: Bob Moore <robert.moore@intel.com>
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
Diffstat (limited to 'drivers/acpi/acpica/exutils.c')
| -rw-r--r-- | drivers/acpi/acpica/exutils.c | 32 |
1 files changed, 32 insertions, 0 deletions
diff --git a/drivers/acpi/acpica/exutils.c b/drivers/acpi/acpica/exutils.c index 3f4225e95d93..30c3f464fda5 100644 --- a/drivers/acpi/acpica/exutils.c +++ b/drivers/acpi/acpica/exutils.c @@ -380,6 +380,38 @@ void acpi_ex_integer_to_string(char *out_string, u64 value) /******************************************************************************* * + * FUNCTION: acpi_ex_pci_cls_to_string + * + * PARAMETERS: out_string - Where to put the converted string (7 bytes) + * PARAMETERS: class_code - PCI class code to be converted (3 bytes) + * + * RETURN: None + * + * DESCRIPTION: Convert 3-bytes PCI class code to string representation. + * Return buffer must be large enough to hold the string. The + * string returned is always exactly of length + * ACPI_PCICLS_STRING_SIZE (includes null terminator). + * + ******************************************************************************/ + +void acpi_ex_pci_cls_to_string(char *out_string, u8 class_code[3]) +{ + + ACPI_FUNCTION_ENTRY(); + + /* All 3 bytes are hexadecimal */ + + out_string[0] = acpi_ut_hex_to_ascii_char((u64)class_code[0], 4); + out_string[1] = acpi_ut_hex_to_ascii_char((u64)class_code[0], 0); + out_string[2] = acpi_ut_hex_to_ascii_char((u64)class_code[1], 4); + out_string[3] = acpi_ut_hex_to_ascii_char((u64)class_code[1], 0); + out_string[4] = acpi_ut_hex_to_ascii_char((u64)class_code[2], 4); + out_string[5] = acpi_ut_hex_to_ascii_char((u64)class_code[2], 0); + out_string[6] = 0; +} + +/******************************************************************************* + * * FUNCTION: acpi_is_valid_space_id * * PARAMETERS: space_id - ID to be validated |