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>
diff --git a/drivers/acpi/acpica/exutils.c b/drivers/acpi/acpica/exutils.c
index 3f4225e..30c3f46 100644
--- a/drivers/acpi/acpica/exutils.c
+++ b/drivers/acpi/acpica/exutils.c
@@ -380,6 +380,38 @@
/*******************************************************************************
*
+ * 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