clocksource/drivers/vf-pit: Encapsulate the PTLCVAL macro

Pass the channel and the base address to the PITLCVAL macro so it is
possible to use multiple instances of the timer with the macro.

Signed-off-by: Daniel Lezcano <daniel.lezcano@linaro.org>
Link: https://lore.kernel.org/r/20250804152344.1109310-12-daniel.lezcano@linaro.org

diff --git a/drivers/clocksource/timer-vf-pit.c b/drivers/clocksource/timer-vf-pit.c
index c81c68b826a0c970f116c70a07066e6854e73d42..4f1b85ba5de3aac8da088444066cbafb9c27fb4e 100644 (file)
--- a/drivers/clocksource/timer-vf-pit.c
+++ b/drivers/clocksource/timer-vf-pit.c
@@ -17,13 +17,14 @@
 #define PIT0_OFFSET    0x100
 #define PIT_CH(n)       (PIT0_OFFSET + 0x10 * (n))
 
-#define PITCVAL                0x04
-
 #define PITMCR_MDIS    BIT(1)
 
 #define PITLDVAL(__base)       (__base)
 #define PITTCTRL(__base)       ((__base) + 0x08)
 
+#define PITCVAL_OFFSET 0x04
+#define PITCVAL(__base)        ((__base) + 0x04)
+
 #define PITTCTRL_TEN                   BIT(0)
 #define PITTCTRL_TIE                   BIT(1)
 
@@ -39,7 +40,7 @@ struct pit_timer {
        struct clocksource cs;
 };
 
-static void __iomem *clksrc_base;
+static void __iomem *sched_clock_base;
 
 static inline struct pit_timer *ced_to_pit(struct clock_event_device *ced)
 {
@@ -68,14 +69,14 @@ static inline void pit_irq_acknowledge(struct pit_timer *pit)
 
 static u64 notrace pit_read_sched_clock(void)
 {
-       return ~readl(clksrc_base + PITCVAL);
+       return ~readl(sched_clock_base);
 }
 
 static u64 pit_timer_clocksource_read(struct clocksource *cs)
 {
        struct pit_timer *pit = cs_to_pit(cs);
 
-       return (u64)~readl(pit->clksrc_base + PITCVAL);
+       return (u64)~readl(PITCVAL(pit->clksrc_base));
 }
 
 static int __init pit_clocksource_init(struct pit_timer *pit, void __iomem *base,
@@ -98,8 +99,7 @@ static int __init pit_clocksource_init(struct pit_timer *pit, void __iomem *base
        writel(~0, PITLDVAL(pit->clksrc_base));
        writel(PITTCTRL_TEN, PITTCTRL(pit->clksrc_base));
 
-       clksrc_base = pit->clksrc_base;
-
+       sched_clock_base = pit->clksrc_base + PITCVAL_OFFSET;
        sched_clock_register(pit_read_sched_clock, 32, rate);
 
        return clocksource_register_hz(&pit->cs, rate);