net: ipa: move ipa_aggr_granularity_val()

We only use ipa_aggr_granularity_val() inside "ipa_main.c", so it
doesn't really need to be defined in a header file.  It makes some
sense to be grouped with the register definitions, but it is unlike
the other inline functions now defined in "ipa_reg.h".  So move it
into "ipa_main.c" where it's used.  TIMER_FREQUENCY is used only
by that function, so move that definition as well.
Signed-off-by: Alex Elder <elder@linaro.org>
Signed-off-by: David S. Miller <davem@davemloft.net>

drivers/net/ipa/ipa_main.c

@@ -287,6 +287,21 @@ ipa_hardware_config_qsb(struct ipa *ipa, const struct ipa_data *data)
 	iowrite32(val, ipa->reg_virt + IPA_REG_QSB_MAX_READS_OFFSET);
 }
 
+/* The internal inactivity timer clock is used for the aggregation timer */
+#define TIMER_FREQUENCY	32000		/* 32 KHz inactivity timer clock */
+
+/* Compute the value to use in the COUNTER_CFG register AGGR_GRANULARITY
+ * field to represent the given number of microseconds.  The value is one
+ * less than the number of timer ticks in the requested period.  0 is not
+ * a valid granularity value.
+ */
+static u32 ipa_aggr_granularity_val(u32 usec)
+{
+	/* assert(usec != 0); */
+
+	return DIV_ROUND_CLOSEST(usec * TIMER_FREQUENCY, USEC_PER_SEC) - 1;
+}
+
 /* IPA uses unified Qtime starting at IPA v4.5, implementing various
  * timestamps and timers independent of the IPA core clock rate.  The
  * Qtimer is based on a 56-bit timestamp incremented at each tick of

drivers/net/ipa/ipa_reg.h

@@ -237,18 +237,6 @@ static inline u32 proc_cntxt_base_addr_encoded(enum ipa_version version,
 #define IPA_REG_COUNTER_CFG_OFFSET			0x000001f0
 #define AGGR_GRANULARITY_FMASK			GENMASK(8, 4)
 
-/* The internal inactivity timer clock is used for the aggregation timer */
-#define TIMER_FREQUENCY	32000		/* 32 KHz inactivity timer clock */
-
-/* Compute the value to use in the AGGR_GRANULARITY field representing the
- * given number of microseconds.  The value is one less than the number of
- * timer ticks in the requested period.  0 not a valid granularity value.
- */
-static inline u32 ipa_aggr_granularity_val(u32 usec)
-{
-	return DIV_ROUND_CLOSEST(usec * TIMER_FREQUENCY, USEC_PER_SEC) - 1;
-}
-
 /* The next register is not present for IPA v4.5 */
 #define IPA_REG_TX_CFG_OFFSET				0x000001fc
 /* The first three fields are present for IPA v3.5.1 only */