linux-kernel - [PATCH 16/20] clocksource/drivers/vf-pit: Consolidate calls to pit_*

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Message-ID: <20250705160129.3688026-16-daniel.lezcano@linaro.org>
Date: Sat,  5 Jul 2025 18:01:22 +0200
From: Daniel Lezcano <daniel.lezcano@...aro.org>
To: daniel.lezcano@...aro.org,
	tglx@...utronix.de
Cc: ghennadi.procopciuc@....nxp.com,
	S32@....com,
	linux-kernel@...r.kernel.org
Subject: [PATCH 16/20] clocksource/drivers/vf-pit: Consolidate calls to pit_*_disable/enable

The difference between the pit_clocksource_enable() and
pit_clocksource_disable() is only setting the TIF flag for the
clockevent. Let's group them and pass the TIF flag parameter to the
function so we save some lines of code. But as the base address is
different regarding if it is a clocksource or a clockevent, we pass
the base address in parameter instead of the struct pit_timer.

Signed-off-by: Daniel Lezcano <daniel.lezcano@...aro.org>
---
 drivers/clocksource/timer-vf-pit.c | 34 ++++++++++++------------------
 1 file changed, 13 insertions(+), 21 deletions(-)

diff --git a/drivers/clocksource/timer-vf-pit.c b/drivers/clocksource/timer-vf-pit.c
index cd104129e900..f4b25d5a5685 100644
--- a/drivers/clocksource/timer-vf-pit.c
+++ b/drivers/clocksource/timer-vf-pit.c
@@ -64,14 +64,16 @@ static inline void pit_module_disable(void __iomem *base)
 	writel(PITMCR_MDIS, PITMCR(base));
 }
 
-static inline void pit_timer_enable(struct pit_timer *pit)
+static inline void pit_timer_enable(void __iomem *base, bool tie)
 {
-	writel(PITTCTRL_TEN | PITTCTRL_TIE, PITTCTRL(pit->clkevt_base));
+	int val = PITTCTRL_TEN | (tie ? PITTCTRL_TIE : 0);
+
+	writel(val, PITTCTRL(base));
 }
 
-static inline void pit_timer_disable(struct pit_timer *pit)
+static inline void pit_timer_disable(void __iomem *base)
 {
-	writel(0, PITTCTRL(pit->clkevt_base));
+	writel(0, PITTCTRL(base));
 }
 
 static inline void pit_timer_set_counter(void __iomem *base, unsigned int cnt)
@@ -79,16 +81,6 @@ static inline void pit_timer_set_counter(void __iomem *base, unsigned int cnt)
 	writel(cnt, PITLDVAL(base));
 }
 
-static inline void pit_clocksource_enable(struct pit_timer *pit)
-{
-	writel(PITTCTRL_TEN, PITTCTRL(pit->clksrc_base));
-}
-
-static inline void pit_clocksource_disable(struct pit_timer *pit)
-{
-	pit_timer_disable(pit);
-}
-
 static inline void pit_irq_acknowledge(struct pit_timer *pit)
 {
 	writel(PITTFLG_TIF, PITTFLG(pit->clkevt_base));
@@ -122,9 +114,9 @@ static int __init pit_clocksource_init(struct pit_timer *pit, const char *name,
 	pit->cs.flags = CLOCK_SOURCE_IS_CONTINUOUS;
 
 	/* set the max load value and start the clock source counter */
-	pit_clocksource_disable(pit);
+	pit_timer_disable(pit->clksrc_base);
 	pit_timer_set_counter(pit->clksrc_base, ~0);
-	pit_clocksource_enable(pit);
+	pit_timer_enable(pit->clksrc_base, 0);
 
 	sched_clock_base = pit->clksrc_base + PITCVAL_OFFSET;
 	sched_clock_register(pit_read_sched_clock, 32, rate);
@@ -143,9 +135,9 @@ static int pit_set_next_event(unsigned long delta, struct clock_event_device *ce
 	 * and the PITLAVAL should be set to delta minus one according to pit
 	 * hardware requirement.
 	 */
-	pit_timer_disable(pit);
+	pit_timer_disable(pit->clkevt_base);
 	pit_timer_set_counter(pit->clkevt_base, delta - 1);
-	pit_timer_enable(pit);
+	pit_timer_enable(pit->clkevt_base, true);
 
 	return 0;
 }
@@ -154,7 +146,7 @@ static int pit_shutdown(struct clock_event_device *ced)
 {
 	struct pit_timer *pit = ced_to_pit(ced);
 
-	pit_timer_disable(pit);
+	pit_timer_disable(pit->clkevt_base);
 
 	return 0;
 }
@@ -182,7 +174,7 @@ static irqreturn_t pit_timer_interrupt(int irq, void *dev_id)
 	 * to stop the counter loop in ONESHOT mode.
 	 */
 	if (likely(clockevent_state_oneshot(ced)))
-		pit_timer_disable(pit);
+		pit_timer_disable(pit->clkevt_base);
 
 	ced->event_handler(ced);
 
@@ -200,7 +192,7 @@ static int __init pit_clockevent_init(struct pit_timer *pit, const char *name,
 	pit->clkevt_base = base + PIT_CH(3);
 	pit->cycle_per_jiffy = rate / (HZ);
 
-	pit_timer_disable(pit);
+	pit_timer_disable(pit->clkevt_base);
 
 	pit_irq_acknowledge(pit);
 
-- 
2.43.0