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authorStuart Brady2005-05-05 16:15:07 -0700
committerLinus Torvalds2005-05-05 16:36:31 -0700
commit60d300c02fe2e0be9bb02904361e41e0307264b2 (patch)
tree28734e32dd7b7deea4d9d1456b354f59de2f2187 /include
parent42d77c70177b2f7535766bce938d965fd863f0fd (diff)
[PATCH] include/linux/soundcard.h: endianness fix
Fixes for big-endian systems in soundcard.h and awe_voice.h This patch fixes the AFMT_S16_NE (include/linux/soundcard.h) and AWE_PATCH (awe_voice.h) macros on big-endian systems. It also moves _PATCHKEY into a new file, patchkey.h, in order to remove a duplicate definition of it from awe_voice.h. Signed-off-by: Stuart Brady <sdbrady@ntlworld.com> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
Diffstat (limited to 'include')
-rw-r--r--include/linux/awe_voice.h6
-rw-r--r--include/linux/patchkey.h45
-rw-r--r--include/linux/soundcard.h34
3 files changed, 75 insertions, 10 deletions
diff --git a/include/linux/awe_voice.h b/include/linux/awe_voice.h
index da0e27de752c..4bf9f33048e2 100644
--- a/include/linux/awe_voice.h
+++ b/include/linux/awe_voice.h
@@ -29,9 +29,9 @@
#define SAMPLE_TYPE_AWE32 0x20
#endif
-#ifndef _PATCHKEY
-#define _PATCHKEY(id) ((id<<8)|0xfd)
-#endif
+#define _LINUX_PATCHKEY_H_INDIRECT
+#include <linux/patchkey.h>
+#undef _LINUX_PATCHKEY_H_INDIRECT
/*----------------------------------------------------------------
* patch information record
diff --git a/include/linux/patchkey.h b/include/linux/patchkey.h
new file mode 100644
index 000000000000..d974a6e92372
--- /dev/null
+++ b/include/linux/patchkey.h
@@ -0,0 +1,45 @@
+/*
+ * <linux/patchkey.h> -- definition of _PATCHKEY macro
+ *
+ * Copyright (C) 2005 Stuart Brady
+ *
+ * This exists because awe_voice.h defined its own _PATCHKEY and it wasn't
+ * clear whether removing this would break anything in userspace.
+ *
+ * Do not include this file directly. Please use <sys/soundcard.h> instead.
+ * For kernel code, use <linux/soundcard.h>
+ */
+
+#ifndef _LINUX_PATCHKEY_H_INDIRECT
+#error "patchkey.h included directly"
+#endif
+
+#ifndef _LINUX_PATCHKEY_H
+#define _LINUX_PATCHKEY_H
+
+/* Endian macros. */
+#ifdef __KERNEL__
+# include <asm/byteorder.h>
+#else
+# include <endian.h>
+#endif
+
+#if defined(__KERNEL__)
+# if defined(__BIG_ENDIAN)
+# define _PATCHKEY(id) (0xfd00|id)
+# elif defined(__LITTLE_ENDIAN)
+# define _PATCHKEY(id) ((id<<8)|0x00fd)
+# else
+# error "could not determine byte order"
+# endif
+#elif defined(__BYTE_ORDER)
+# if __BYTE_ORDER == __BIG_ENDIAN
+# define _PATCHKEY(id) (0xfd00|id)
+# elif __BYTE_ORDER == __LITTLE_ENDIAN
+# define _PATCHKEY(id) ((id<<8)|0x00fd)
+# else
+# error "could not determine byte order"
+# endif
+#endif
+
+#endif /* _LINUX_PATCHKEY_H */
diff --git a/include/linux/soundcard.h b/include/linux/soundcard.h
index 28d2d1881978..523d069c862c 100644
--- a/include/linux/soundcard.h
+++ b/include/linux/soundcard.h
@@ -39,6 +39,13 @@
/* In Linux we need to be prepared for cross compiling */
#include <linux/ioctl.h>
+/* Endian macros. */
+#ifdef __KERNEL__
+# include <asm/byteorder.h>
+#else
+# include <endian.h>
+#endif
+
/*
* Supported card ID numbers (Should be somewhere else?)
*/
@@ -179,13 +186,26 @@ typedef struct seq_event_rec {
* Some big endian/little endian handling macros
*/
-#if defined(_AIX) || defined(AIX) || defined(sparc) || defined(__sparc__) || defined(HPPA) || defined(PPC) || defined(__mc68000__)
-/* Big endian machines */
-# define _PATCHKEY(id) (0xfd00|id)
-# define AFMT_S16_NE AFMT_S16_BE
-#else
-# define _PATCHKEY(id) ((id<<8)|0xfd)
-# define AFMT_S16_NE AFMT_S16_LE
+#define _LINUX_PATCHKEY_H_INDIRECT
+#include <linux/patchkey.h>
+#undef _LINUX_PATCHKEY_H_INDIRECT
+
+#if defined(__KERNEL__)
+# if defined(__BIG_ENDIAN)
+# define AFMT_S16_NE AFMT_S16_BE
+# elif defined(__LITTLE_ENDIAN)
+# define AFMT_S16_NE AFMT_S16_LE
+# else
+# error "could not determine byte order"
+# endif
+#elif defined(__BYTE_ORDER)
+# if __BYTE_ORDER == __BIG_ENDIAN
+# define AFMT_S16_NE AFMT_S16_BE
+# elif __BYTE_ORDER == __LITTLE_ENDIAN
+# define AFMT_S16_NE AFMT_S16_LE
+# else
+# error "could not determine byte order"
+# endif
#endif
/*