diff options
| author | Minkyu Kang <mk7.kang@samsung.com> | 2011-03-10 20:05:58 +0900 |
|---|---|---|
| committer | Albert Aribaud <albert.aribaud@free.fr> | 2011-03-27 19:19:59 +0200 |
| commit | 70fc52dfaa04a1ec70188dadec794b45fca48628 (patch) | |
| tree | 395f38dc5b6a2b01f976244e97fd75020acb5162 /arch | |
| parent | 3f129280b3f1df51387447d8366ab6c3b6607547 (diff) | |
| download | u-boot-imx-70fc52dfaa04a1ec70188dadec794b45fca48628.zip u-boot-imx-70fc52dfaa04a1ec70188dadec794b45fca48628.tar.gz u-boot-imx-70fc52dfaa04a1ec70188dadec794b45fca48628.tar.bz2 | |
S5P: timer: Use pwm functions
Use pwm functions for timer that is PWM timer 4.
Signed-off-by: Minkyu Kang <mk7.kang@samsung.com>
Diffstat (limited to 'arch')
| -rw-r--r-- | arch/arm/cpu/armv7/s5p-common/timer.c | 49 | ||||
| -rw-r--r-- | arch/arm/include/asm/arch-s5pc1xx/pwm.h | 8 | ||||
| -rw-r--r-- | 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 { |