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units: add the HZ macros

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The macros for the unit conversion for frequency are duplicated in
different places.

Provide these macros in the 'units' header, so they can be reused.

Link: https://lkml.kernel.org/r/[email protected]
Signed-off-by: Daniel Lezcano <[email protected]>
Reviewed-by: Christian Eggers <[email protected]>
Reviewed-by: Andy Shevchenko <[email protected]>
Cc: Chanwoo Choi <[email protected]>
Cc: Guenter Roeck <[email protected]>
Cc: Jonathan Cameron <[email protected]>
Cc: Jonathan Cameron <[email protected]>
Cc: Kyungmin Park <[email protected]>
Cc: Lars-Peter Clausen <[email protected]>
Cc: Lukasz Luba <[email protected]>
Cc: Maxime Coquelin <[email protected]>
Cc: Miquel Raynal <[email protected]>
Cc: MyungJoo Ham <[email protected]>
Cc: Peter Meerwald <[email protected]>
Cc: "Rafael J. Wysocki" <[email protected]>
Cc: Zhang Rui <[email protected]>
Signed-off-by: Andrew Morton <[email protected]>
Signed-off-by: Linus Torvalds <[email protected]>
This commit is contained in:
Daniel Lezcano authored and Linus Torvalds committed 2021-09-08 11:50:25 -07:00
1 parent c9221919a2
commit e2c77032fc
1 file changed
+4
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include/linux/units.h
+4
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@@ -4,6 +4,10 @@
#include <linux/math.h>
#define HZ_PER_KHZ 1000UL
#define KHZ_PER_MHZ 1000UL
#define HZ_PER_MHZ 1000000UL
#define MILLIWATT_PER_WATT 1000UL
#define MICROWATT_PER_MILLIWATT 1000UL
#define MICROWATT_PER_WATT 1000000UL