units: Add HZ_PER_GHZ

The is going to be a new user of the HZ_PER_GHZ definition besides
possibly existing ones. Add that one to the header.

While at it, split Hz and kHz groups of the multipliers for better
maintenance and readability.

Signed-off-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
Reviewed-by: Andi Shyti <andi.shyti@kernel.org>
Reviewed-by: Linus Walleij <linusw@kernel.org>
Reviewed-by: Wolfram Sang <wsa+renesas@sang-engineering.com>
Reviewed-by: AngeloGioacchino Del Regno <angelogioacchino.delregno@collabora.com>
Signed-off-by: Andi Shyti <andi.shyti@kernel.org>
Link: https://lore.kernel.org/r/20260112134900.4142954-2-andriy.shevchenko@linux.intel.com

diff --git a/include/linux/units.h b/include/linux/units.h
index 00e15de33eca2f870d2e2e4301ed6d5aedcec4f0..0c296a004e897e3eab16d366fdfef18997534180 100644 (file)
--- a/include/linux/units.h
+++ b/include/linux/units.h
@@ -25,9 +25,12 @@
 #define MICROHZ_PER_HZ         1000000UL
 #define MILLIHZ_PER_HZ         1000UL
 
+/* Hz based multipliers */
 #define HZ_PER_KHZ             1000UL
 #define HZ_PER_MHZ             1000000UL
+#define HZ_PER_GHZ             1000000000UL
 
+/* kHz based multipliers */
 #define KHZ_PER_MHZ            1000UL
 #define KHZ_PER_GHZ            1000000UL