summaryrefslogtreecommitdiffstats
path: root/arch/tile/include/asm/timex.h
diff options
context:
space:
mode:
authorPaul Mundt <lethal@linux-sh.org>2010-08-16 13:32:24 +0900
committerPaul Mundt <lethal@linux-sh.org>2010-08-16 13:32:24 +0900
commitbbcf6e8b66ab2fb5ddab4d0fe40c2e6a5ebe5301 (patch)
tree071fa9f86dc04a16570be367d04cff3b00c694ad /arch/tile/include/asm/timex.h
parent57682827b9a5edb52e33af0be9082b51bffcd5c7 (diff)
parentda5cabf80e2433131bf0ed8993abc0f7ea618c73 (diff)
downloadop-kernel-dev-bbcf6e8b66ab2fb5ddab4d0fe40c2e6a5ebe5301.zip
op-kernel-dev-bbcf6e8b66ab2fb5ddab4d0fe40c2e6a5ebe5301.tar.gz
Merge branch 'master' of git://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux-2.6
Conflicts: arch/sh/include/asm/Kbuild drivers/Makefile Signed-off-by: Paul Mundt <lethal@linux-sh.org>
Diffstat (limited to 'arch/tile/include/asm/timex.h')
-rw-r--r--arch/tile/include/asm/timex.h47
1 files changed, 47 insertions, 0 deletions
diff --git a/arch/tile/include/asm/timex.h b/arch/tile/include/asm/timex.h
new file mode 100644
index 0000000..3baf5fc
--- /dev/null
+++ b/arch/tile/include/asm/timex.h
@@ -0,0 +1,47 @@
+/*
+ * Copyright 2010 Tilera Corporation. All Rights Reserved.
+ *
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU General Public License
+ * as published by the Free Software Foundation, version 2.
+ *
+ * This program is distributed in the hope that it will be useful, but
+ * WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY OR FITNESS FOR A PARTICULAR PURPOSE, GOOD TITLE or
+ * NON INFRINGEMENT. See the GNU General Public License for
+ * more details.
+ */
+
+#ifndef _ASM_TILE_TIMEX_H
+#define _ASM_TILE_TIMEX_H
+
+/*
+ * This rate should be a multiple of the possible HZ values (100, 250, 1000)
+ * and a fraction of the possible hardware timer frequencies. Our timer
+ * frequency is highly tunable but also quite precise, so for the primary use
+ * of this value (setting ACT_HZ from HZ) we just pick a value that causes
+ * ACT_HZ to be set to HZ. We make the value somewhat large just to be
+ * more robust in case someone tries out a new value of HZ.
+ */
+#define CLOCK_TICK_RATE 1000000
+
+typedef unsigned long long cycles_t;
+
+#if CHIP_HAS_SPLIT_CYCLE()
+cycles_t get_cycles(void);
+#else
+static inline cycles_t get_cycles(void)
+{
+ return __insn_mfspr(SPR_CYCLE);
+}
+#endif
+
+cycles_t get_clock_rate(void);
+
+/* Called at cpu initialization to set some low-level constants. */
+void setup_clock(void);
+
+/* Called at cpu initialization to start the tile-timer clock device. */
+void setup_tile_timer(void);
+
+#endif /* _ASM_TILE_TIMEX_H */
OpenPOWER on IntegriCloud