X-Git-Url: https://git.sur5r.net/?a=blobdiff_plain;f=arch%2Farm%2Fcpu%2Farmv7%2Fs5p-common%2Ftimer.c;h=b750d161417bb891a641aee19afceb4dec078e2a;hb=c04bf5e9a45d7335681352faa125193258f8e976;hp=04906503e6e40332507211ac070a3d1054eb6301;hpb=a78ded13111dde555ed5de99cff10f41ae674cb1;p=u-boot

diff --git a/arch/arm/cpu/armv7/s5p-common/timer.c b/arch/arm/cpu/armv7/s5p-common/timer.c
index 04906503e6..b750d16141 100644
--- a/arch/arm/cpu/armv7/s5p-common/timer.c
+++ b/arch/arm/cpu/armv7/s5p-common/timer.c
@@ -27,21 +27,9 @@
 #include <asm/io.h>
 #include <asm/arch/pwm.h>
 #include <asm/arch/clk.h>
+#include <pwm.h>
 
-#define PRESCALER_1		(16 - 1)	/* prescaler of timer 2, 3, 4 */
-#define MUX_DIV_2		1		/* 1/2 period */
-#define MUX_DIV_4		2		/* 1/4 period */
-#define MUX_DIV_8		3		/* 1/8 period */
-#define MUX_DIV_16		4		/* 1/16 period */
-#define MUX4_DIV_SHIFT		16
-
-#define TCON_TIMER4_SHIFT	20
-
-static unsigned long count_value;
-
-/* Internal tick units */
-static unsigned long long timestamp;	/* Monotonic incrementing timer */
-static unsigned long lastdec;		/* Last decremneter snapshot */
+DECLARE_GLOBAL_DATA_PTR;
 
 /* macro to read the 16 bit timer */
 static inline struct s5p_timer *s5p_get_base_timer(void)
@@ -51,44 +39,10 @@ static inline struct s5p_timer *s5p_get_base_timer(void)
 
 int timer_init(void)
 {
-	struct s5p_timer *const timer = s5p_get_base_timer();
-	u32 val;
-
-	/*
-	 * @ PWM Timer 4
-	 * Timer Freq(HZ) =
-	 *	PWM_CLK / { (prescaler_value + 1) * (divider_value) }
-	 */
-
-	/* set prescaler : 16 */
-	/* set divider : 2 */
-	writel((PRESCALER_1 & 0xff) << 8, &timer->tcfg0);
-	writel((MUX_DIV_2 & 0xf) << MUX4_DIV_SHIFT, &timer->tcfg1);
-
-	if (count_value == 0) {
-		/* reset initial value */
-		/* count_value = 2085937.5(HZ) (per 1 sec)*/
-		count_value = get_pwm_clk() / ((PRESCALER_1 + 1) *
-				(MUX_DIV_2 + 1));
-
-		/* count_value / 100 = 20859.375(HZ) (per 10 msec) */
-		count_value = count_value / 100;
-	}
-
-	/* set count value */
-	writel(count_value, &timer->tcntb4);
-	lastdec = count_value;
-
-	val = (readl(&timer->tcon) & ~(0x07 << TCON_TIMER4_SHIFT)) |
-		TCON4_AUTO_RELOAD;
-
-	/* auto reload & manual update */
-	writel(val | TCON4_UPDATE, &timer->tcon);
-
-	/* start PWM timer 4 */
-	writel(val | TCON4_START, &timer->tcon);
-
-	timestamp = 0;
+	/* PWM Timer 4 */
+	pwm_init(4, MUX_DIV_2, 0);
+	pwm_config(4, 0, 0);
+	pwm_enable(4);
 
 	return 0;
 }
@@ -108,13 +62,16 @@ unsigned long get_timer(unsigned long base)
 
 void set_timer(unsigned long t)
 {
-	timestamp = t;
+	gd->tbl = t;
 }
 
 /* delay x useconds */
 void __udelay(unsigned long usec)
 {
-	unsigned long tmo, tmp;
+	struct s5p_timer *const timer = s5p_get_base_timer();
+	unsigned long tmo, tmp, count_value;
+
+	count_value = readl(&timer->tcntb4);
 
 	if (usec >= 1000) {
 		/*
@@ -137,7 +94,7 @@ void __udelay(unsigned long usec)
 	tmp = get_timer(0);
 
 	/* if setting this fordward will roll time stamp */
-	/* reset "advancing" timestamp to 0, set lastdec value */
+	/* reset "advancing" timestamp to 0, set lastinc value */
 	/* else, set advancing stamp wake up time */
 	if ((tmo + tmp + 1) < tmp)
 		reset_timer_masked();
@@ -154,23 +111,24 @@ void reset_timer_masked(void)
 	struct s5p_timer *const timer = s5p_get_base_timer();
 
 	/* reset time */
-	lastdec = readl(&timer->tcnto4);
-	timestamp = 0;
+	gd->lastinc = readl(&timer->tcnto4);
+	gd->tbl = 0;
 }
 
 unsigned long get_timer_masked(void)
 {
 	struct s5p_timer *const timer = s5p_get_base_timer();
 	unsigned long now = readl(&timer->tcnto4);
+	unsigned long count_value = readl(&timer->tcntb4);
 
-	if (lastdec >= now)
-		timestamp += lastdec - now;
+	if (gd->lastinc >= now)
+		gd->tbl += gd->lastinc - now;
 	else
-		timestamp += lastdec + count_value - now;
+		gd->tbl += gd->lastinc + count_value - now;
 
-	lastdec = now;
+	gd->lastinc = now;
 
-	return timestamp;
+	return gd->tbl;
 }
 
 /*