[PATCH v2 3/9] arm64: delay: Move USECS_TO_CYCLES() to generic header

[Sneh Mankad]

USECS_TO_CYCLES() converts a microsecond delay to arch timer cycles.
rpmh-rsc carries a private copy of it and of its xloops_to_cycles()
helper, and the MPM irqchip now needs the same conversion.

Move both to linux/delay.h and drop the rpmh-rsc copy, so there is one
definition for drivers to use.

No functional change.

Signed-off-by: Sneh Mankad <sneh.mankad at oss.qualcomm.com>
---
 arch/arm64/lib/delay.c      | 8 --------
 drivers/soc/qcom/rpmh-rsc.c | 8 --------
 include/linux/delay.h       | 8 ++++++++
 3 files changed, 8 insertions(+), 16 deletions(-)

diff --git a/arch/arm64/lib/delay.c b/arch/arm64/lib/delay.c
index e278e060e78a9ec3953657a6bc8c0de0da4399fc..117ac5a2f13df1935dbcbc7bf32901f7a4411295 100644
--- a/arch/arm64/lib/delay.c
+++ b/arch/arm64/lib/delay.c
@@ -15,14 +15,6 @@
 
 #include <clocksource/arm_arch_timer.h>
 
-#define USECS_TO_CYCLES(time_usecs)			\
-	xloops_to_cycles((time_usecs) * 0x10C7UL)
-
-static inline unsigned long xloops_to_cycles(unsigned long xloops)
-{
-	return (xloops * loops_per_jiffy * HZ) >> 32;
-}
-
 /*
  * Force the use of CNTVCT_EL0 in order to have the same base as WFxT.
  * This avoids some annoying issues when CNTVOFF_EL2 is not reset 0 on a
diff --git a/drivers/soc/qcom/rpmh-rsc.c b/drivers/soc/qcom/rpmh-rsc.c
index c6f7d5c9c493d9e06c048930b8a14a38660df4b1..4a664d522142747427de5589f8aa90b3e3b74bd9 100644
--- a/drivers/soc/qcom/rpmh-rsc.c
+++ b/drivers/soc/qcom/rpmh-rsc.c
@@ -146,14 +146,6 @@ enum {
  *  +---------------------------------------------------+
  */
 
-#define USECS_TO_CYCLES(time_usecs)			\
-	xloops_to_cycles((time_usecs) * 0x10C7UL)
-
-static inline unsigned long xloops_to_cycles(u64 xloops)
-{
-	return (xloops * loops_per_jiffy * HZ) >> 32;
-}
-
 static u32 rpmh_rsc_reg_offset_ver_2_7[] = {
 	[RSC_DRV_TCS_OFFSET]		= 672,
 	[RSC_DRV_CMD_OFFSET]		= 20,
diff --git a/include/linux/delay.h b/include/linux/delay.h
index 68b2a69dd24d6c135f9f749c1e2f15f8b3bdb141..31e1a3dfe2dfc1a9dea7fd6d7db735f9a2507474 100644
--- a/include/linux/delay.h
+++ b/include/linux/delay.h
@@ -17,6 +17,14 @@ extern unsigned long loops_per_jiffy;
 
 #include <asm/delay.h>
 
+#define USECS_TO_CYCLES(time_usecs)			\
+	xloops_to_cycles((time_usecs) * 0x10C7UL)
+
+static inline unsigned long xloops_to_cycles(unsigned long xloops)
+{
+	return (xloops * loops_per_jiffy * HZ) >> 32;
+}
+
 /*
  * Using udelay() for intervals greater than a few milliseconds can
  * risk overflow for high loops_per_jiffy (high bogomips) machines. The

-- 
2.34.1