[U-Boot] [PATCH 1/4] S5P: timer: Use pwm functions

[Minkyu Kang]

Use pwm functions for timer that is PWM timer 4.

Signed-off-by: Minkyu Kang <mk7.kang at samsung.com>
Signed-off-by: Kyungmin Park <kyungmin.park at samsung.com>
---
 arch/arm/cpu/armv7/s5p-common/timer.c   |   49 +++---------------------------
 arch/arm/include/asm/arch-s5pc1xx/pwm.h |    8 +----
 arch/arm/include/asm/arch-s5pc2xx/pwm.h |    8 +----
 3 files changed, 7 insertions(+), 58 deletions(-)

diff --git a/arch/arm/cpu/armv7/s5p-common/timer.c b/arch/arm/cpu/armv7/s5p-common/timer.c
index 651fd5d..cf61ee0 100644
--- a/arch/arm/cpu/armv7/s5p-common/timer.c
+++ b/arch/arm/cpu/armv7/s5p-common/timer.c
@@ -27,15 +27,7 @@
 #include <asm/io.h>
 #include <asm/arch/pwm.h>
 #include <asm/arch/clk.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
+#include <pwm.h>
 
 static unsigned long count_value;
 
@@ -51,41 +43,10 @@ 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);
-
-	/* 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;
 }
diff --git a/arch/arm/include/asm/arch-s5pc1xx/pwm.h b/arch/arm/include/asm/arch-s5pc1xx/pwm.h
index de4dbce..d0cf3cb 100644
--- a/arch/arm/include/asm/arch-s5pc1xx/pwm.h
+++ b/arch/arm/include/asm/arch-s5pc1xx/pwm.h
@@ -34,19 +34,13 @@
 
 #define MUX_DIV_SHIFT(x)	(x * 4)
 
-/* Interval mode(Auto Reload) of PWM Timer 4 */
-#define TCON4_AUTO_RELOAD	(1 << 22)
-/* Update TCNTB4 */
-#define TCON4_UPDATE		(1 << 21)
-/* start bit of PWM Timer 4 */
-#define TCON4_START		(1 << 20)
-
 #define TCON_OFFSET(x)		((x + 1) * (!!x) << 2)
 
 #define TCON_START(x)		(1 << TCON_OFFSET(x))
 #define TCON_UPDATE(x)		(1 << (TCON_OFFSET(x) + 1))
 #define TCON_INVERTER(x)	(1 << (TCON_OFFSET(x) + 2))
 #define TCON_AUTO_RELOAD(x)	(1 << (TCON_OFFSET(x) + 3))
+#define TCON4_AUTO_RELOAD	(1 << 22)
 
 #ifndef __ASSEMBLY__
 struct s5p_timer {
diff --git a/arch/arm/include/asm/arch-s5pc2xx/pwm.h b/arch/arm/include/asm/arch-s5pc2xx/pwm.h
index de4dbce..d0cf3cb 100644
--- a/arch/arm/include/asm/arch-s5pc2xx/pwm.h
+++ b/arch/arm/include/asm/arch-s5pc2xx/pwm.h
@@ -34,19 +34,13 @@
 
 #define MUX_DIV_SHIFT(x)	(x * 4)
 
-/* Interval mode(Auto Reload) of PWM Timer 4 */
-#define TCON4_AUTO_RELOAD	(1 << 22)
-/* Update TCNTB4 */
-#define TCON4_UPDATE		(1 << 21)
-/* start bit of PWM Timer 4 */
-#define TCON4_START		(1 << 20)
-
 #define TCON_OFFSET(x)		((x + 1) * (!!x) << 2)
 
 #define TCON_START(x)		(1 << TCON_OFFSET(x))
 #define TCON_UPDATE(x)		(1 << (TCON_OFFSET(x) + 1))
 #define TCON_INVERTER(x)	(1 << (TCON_OFFSET(x) + 2))
 #define TCON_AUTO_RELOAD(x)	(1 << (TCON_OFFSET(x) + 3))
+#define TCON4_AUTO_RELOAD	(1 << 22)
 
 #ifndef __ASSEMBLY__
 struct s5p_timer {
-- 
1.7.1