Author: adrian
Date: Sat May 14 20:09:37 2016
New Revision: 299757
URL: https://svnweb.freebsd.org/changeset/base/299757
Log:
[bwn] add Q52 macros.
The PHY-N code uses a different format for gain values, so these macros
are used for converting to/from and print out values.
Modified:
head/sys/dev/bwn/if_bwn_util.h
Modified: head/sys/dev/bwn/if_bwn_util.h
==============================================================================
--- head/sys/dev/bwn/if_bwn_util.h Sat May 14 20:06:38 2016
(r299756)
+++ head/sys/dev/bwn/if_bwn_util.h Sat May 14 20:09:37 2016
(r299757)
@@ -55,6 +55,12 @@ bwn_clamp_val(int val, int lo, int hi)
return val;
}
+/* Q52 format - used in PHY routines */
+#define INT_TO_Q52(i) ((i) << 2)
+#define Q52_TO_INT(q52) ((q52) >> 2)
+#define Q52_FMT "%u.%u"
+#define Q52_ARG(q52) Q52_TO_INT(q52), ((((q52) & 0x3) * 100)
/ 4)
+
extern unsigned int bwn_sqrt(struct bwn_mac *mac, unsigned int x);
#endif /* __IF_BWN_UTIL_H__ */
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