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authorRafael J. Wysocki <rafael.j.wysocki@intel.com>2014-08-05 22:50:12 +0200
committerRafael J. Wysocki <rafael.j.wysocki@intel.com>2014-08-05 22:50:12 +0200
commit8b80c0f187d8711fede71b7bd6fb80cb76bb8be9 (patch)
tree1f7582124a4dc42eded38668f393db16ddd7d658 /drivers/acpi/acpica/uthex.c
parent49c68fd448568e79598b159efc09a7864bc59ede (diff)
parent796ca778585d833023c18e1815b2e30a2d2f00fd (diff)
Merge branch 'acpica'
* acpica: ACPICA: Update version to 20140724. ACPICA: ACPI 5.1: Update for PCCT table changes. ACPICA/ARM: ACPI 5.1: Update for GTDT table changes. ACPICA/ARM: ACPI 5.1: Update for MADT changes. ACPICA/ARM: ACPI 5.1: Update for FADT changes. ACPICA: ACPI 5.1: Support for the _CCA predifined name. ACPICA: ACPI 5.1: New notify value for System Affinity Update. ACPICA: ACPI 5.1: Support for the _DSD predefined name. ACPICA: Debug object: Add current value of Timer() to debug line prefix. ACPICA: acpihelp: Add UUID support, restructure some existing files. ACPICA: Utilities: Fix local printf issue. ACPICA: Tables: Update for DMAR table changes. ACPICA: Remove some extraneous printf arguments. ACPICA: Update for comments/formatting. No functional changes. ACPICA: Disassembler: Add support for the ToUUID opererator (macro). ACPICA: Remove a redundant cast to acpi_size for ACPI_OFFSET() macro. ACPICA: Work around an ancient GCC bug.
Diffstat (limited to 'drivers/acpi/acpica/uthex.c')
-rw-r--r--drivers/acpi/acpica/uthex.c100
1 files changed, 100 insertions, 0 deletions
diff --git a/drivers/acpi/acpica/uthex.c b/drivers/acpi/acpica/uthex.c
new file mode 100644
index 00000000000..9afa9441b18
--- /dev/null
+++ b/drivers/acpi/acpica/uthex.c
@@ -0,0 +1,100 @@
+/******************************************************************************
+ *
+ * Module Name: uthex -- Hex/ASCII support functions
+ *
+ *****************************************************************************/
+
+/*
+ * Copyright (C) 2000 - 2014, Intel Corp.
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the above copyright
+ * notice, this list of conditions, and the following disclaimer,
+ * without modification.
+ * 2. Redistributions in binary form must reproduce at minimum a disclaimer
+ * substantially similar to the "NO WARRANTY" disclaimer below
+ * ("Disclaimer") and any redistribution must be conditioned upon
+ * including a substantially similar Disclaimer requirement for further
+ * binary redistribution.
+ * 3. Neither the names of the above-listed copyright holders nor the names
+ * of any contributors may be used to endorse or promote products derived
+ * from this software without specific prior written permission.
+ *
+ * Alternatively, this software may be distributed under the terms of the
+ * GNU General Public License ("GPL") version 2 as published by the Free
+ * Software Foundation.
+ *
+ * NO WARRANTY
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+ * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+ * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTIBILITY AND FITNESS FOR
+ * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
+ * HOLDERS OR CONTRIBUTORS BE LIABLE FOR SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+ * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
+ * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING
+ * IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
+ * POSSIBILITY OF SUCH DAMAGES.
+ */
+
+#include <acpi/acpi.h>
+#include "accommon.h"
+
+#define _COMPONENT ACPI_COMPILER
+ACPI_MODULE_NAME("uthex")
+
+/* Hex to ASCII conversion table */
+static char acpi_gbl_hex_to_ascii[] = {
+ '0', '1', '2', '3', '4', '5', '6', '7', '8', '9', 'A', 'B', 'C', 'D',
+ 'E', 'F'
+};
+
+/*******************************************************************************
+ *
+ * FUNCTION: acpi_ut_hex_to_ascii_char
+ *
+ * PARAMETERS: integer - Contains the hex digit
+ * position - bit position of the digit within the
+ * integer (multiple of 4)
+ *
+ * RETURN: The converted Ascii character
+ *
+ * DESCRIPTION: Convert a hex digit to an Ascii character
+ *
+ ******************************************************************************/
+
+char acpi_ut_hex_to_ascii_char(u64 integer, u32 position)
+{
+
+ return (acpi_gbl_hex_to_ascii[(integer >> position) & 0xF]);
+}
+
+/*******************************************************************************
+ *
+ * FUNCTION: acpi_ut_hex_char_to_value
+ *
+ * PARAMETERS: ascii_char - Hex character in Ascii
+ *
+ * RETURN: The binary value of the ascii/hex character
+ *
+ * DESCRIPTION: Perform ascii-to-hex translation
+ *
+ ******************************************************************************/
+
+u8 acpi_ut_ascii_char_to_hex(int hex_char)
+{
+
+ if (hex_char <= 0x39) {
+ return ((u8)(hex_char - 0x30));
+ }
+
+ if (hex_char <= 0x46) {
+ return ((u8)(hex_char - 0x37));
+ }
+
+ return ((u8)(hex_char - 0x57));
+}