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ACPICA: Utilities: Add _CLS processing

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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>
This commit is contained in:
Suravee Suthikulpanit
2015-07-01 14:44:04 +08:00
committed by Rafael J. Wysocki
parent cbc823405a
commit f65358e572
7 changed files with 164 additions and 13 deletions
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32
drivers/acpi/acpica/exutils.c
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@@ -378,6 +378,38 @@ 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