ARM: S5P: pwm driver support

This is common pwm driver of S5P.

Signed-off-by: Donghwa Lee <dh09.lee@samsung.com>
Signed-off-by: Kyungmin Park <kyungmin.park@samsung.com>
Signed-off-by: Minkyu Kang <mk7.kang@samsung.com>

1 files changed, 19 insertions, 0 deletions

diff --git a/arch/arm/include/asm/arch-s5pc2xx/pwm.h b/arch/arm/include/asm/arch-s5pc2xx/pwm.h
index 0369968d4a..de4dbce076 100644
--- a/arch/arm/include/asm/arch-s5pc2xx/pwm.h
+++ b/arch/arm/include/asm/arch-s5pc2xx/pwm.h
@@ -22,6 +22,18 @@
 #ifndef __ASM_ARM_ARCH_PWM_H_
 #define __ASM_ARM_ARCH_PWM_H_
 
+#define PRESCALER_0		(8 - 1)		/* prescaler of timer 0, 1 */
+#define PRESCALER_1		(16 - 1)	/* prescaler of timer 2, 3, 4 */
+
+/* Divider MUX */
+#define MUX_DIV_1		0		/* 1/1 period */
+#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 MUX_DIV_SHIFT(x)	(x * 4)
+
 /* Interval mode(Auto Reload) of PWM Timer 4 */
 #define TCON4_AUTO_RELOAD	(1 << 22)
 /* Update TCNTB4 */
@@ -29,6 +41,13 @@
 /* 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))
+
 #ifndef __ASSEMBLY__
 struct s5p_timer {
 	unsigned int	tcfg0;