counter: Introduce the COUNTER_COMP_FREQUENCY() macro

Now that there are two users for the "frequency" extension, introduce a
new COUNTER_COMP_FREQUENCY() macro.
This extension is intended to be a read-only signal attribute.

Suggested-by: William Breathitt Gray <william.gray@linaro.org>
Signed-off-by: Fabrice Gasnier <fabrice.gasnier@foss.st.com>
Link: https://lore.kernel.org/r/20240306153631.4051115-1-fabrice.gasnier@foss.st.com
Signed-off-by: William Breathitt Gray <william.gray@linaro.org>

diff --git a/include/linux/counter.h b/include/linux/counter.h
index b767b5c821f58e0d79f8a167ea7259d370b2df53..cd35d8574ee2198dfb816f083739c87d6872a5d4 100644 (file)
--- a/include/linux/counter.h
+++ b/include/linux/counter.h
@@ -601,6 +601,9 @@ struct counter_array {
 #define COUNTER_COMP_FLOOR(_read, _write) \
        COUNTER_COMP_COUNT_U64("floor", _read, _write)
 
+#define COUNTER_COMP_FREQUENCY(_read) \
+       COUNTER_COMP_SIGNAL_U64("frequency", _read, NULL)
+
 #define COUNTER_COMP_POLARITY(_read, _write, _available) \
 { \
        .type = COUNTER_COMP_SIGNAL_POLARITY, \