From: Ben Dooks <ben-linux@fluff.org>
Date: Tue, 21 Oct 2008 13:07:01 +0000 (+0100)
Subject: [ARM] S3C: Add TICK_MAX for timer code
X-Git-Tag: firefly_0821_release~16459^2~9^2~9^2~21
X-Git-Url: http://demsky.eecs.uci.edu/git/?a=commitdiff_plain;h=c652d2ddb97ccdc4774e149ef998928263fd8886;p=firefly-linux-kernel-4.4.55.git

[ARM] S3C: Add TICK_MAX for timer code

Add TICK_MAX definition for the timer code
as the S3C64XX series have 32bit capable
PWM timers.

Signed-off-by: Ben Dooks <ben-linux@fluff.org>
---

diff --git a/arch/arm/mach-s3c6400/include/mach/tick.h b/arch/arm/mach-s3c6400/include/mach/tick.h
index 95e5ec92ee98..d9c0dc7014ec 100644
--- a/arch/arm/mach-s3c6400/include/mach/tick.h
+++ b/arch/arm/mach-s3c6400/include/mach/tick.h
@@ -24,4 +24,6 @@ static inline u32 s3c24xx_ostimer_pending(void)
 	return pend & 1 << (IRQ_TIMER4_VIC - S3C64XX_IRQ_VIC0(0));
 }
 
+#define TICK_MAX	(0xffffffff)
+
 #endif /* __ASM_ARCH_6400_TICK_H */
diff --git a/arch/arm/plat-s3c/time.c b/arch/arm/plat-s3c/time.c
index d35e149f4ebf..a581ff7ba664 100644
--- a/arch/arm/plat-s3c/time.c
+++ b/arch/arm/plat-s3c/time.c
@@ -44,6 +44,10 @@
 static unsigned long timer_startval;
 static unsigned long timer_usec_ticks;
 
+#ifndef TICK_MAX
+#define TICK_MAX (0xffff)
+#endif
+
 #define TIMER_USEC_SHIFT 16
 
 /* we use the shifted arithmetic to work out the ratio of timer ticks
@@ -156,7 +160,7 @@ static void s3c2410_timer_setup (void)
 	unsigned long tcfg1;
 	unsigned long tcfg0;
 
-	tcnt = 0xffff;  /* default value for tcnt */
+	tcnt = TICK_MAX;  /* default value for tcnt */
 
 	/* read the current timer configuration bits */
 
@@ -217,7 +221,7 @@ static void s3c2410_timer_setup (void)
 	       tcon, tcnt, tcfg0, tcfg1, timer_usec_ticks);
 
 	/* check to see if timer is within 16bit range... */
-	if (tcnt > 0xffff) {
+	if (tcnt > TICK_MAX) {
 		panic("setup_timer: HZ is too small, cannot configure timer!");
 		return;
 	}