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/*
* Copyright (C) 2010, Lars-Peter Clausen <lars@metafoo.de>
* JZ4740 platform timer support
*
* This program is free software; you can redistribute it and/or modify it
* under the terms of the GNU General Public License as published by the
* Free Software Foundation; either version 2 of the License, or (at your
* option) any later version.
*
* You should have received a copy of the GNU General Public License along
* with this program; if not, write to the Free Software Foundation, Inc.,
* 675 Mass Ave, Cambridge, MA 02139, USA.
*
*/
#ifndef __ASM_MACH_JZ4740_TIMER
#define __ASM_MACH_JZ4740_TIMER
#define JZ_REG_TIMER_STOP 0x0C
#define JZ_REG_TIMER_STOP_SET 0x1C
#define JZ_REG_TIMER_STOP_CLEAR 0x2C
#define JZ_REG_TIMER_ENABLE 0x00
#define JZ_REG_TIMER_ENABLE_SET 0x04
#define JZ_REG_TIMER_ENABLE_CLEAR 0x08
#define JZ_REG_TIMER_FLAG 0x10
#define JZ_REG_TIMER_FLAG_SET 0x14
#define JZ_REG_TIMER_FLAG_CLEAR 0x18
#define JZ_REG_TIMER_MASK 0x20
#define JZ_REG_TIMER_MASK_SET 0x24
#define JZ_REG_TIMER_MASK_CLEAR 0x28
#define JZ_REG_TIMER_DFR(x) (((x) * 0x10) + 0x30)
#define JZ_REG_TIMER_DHR(x) (((x) * 0x10) + 0x34)
#define JZ_REG_TIMER_CNT(x) (((x) * 0x10) + 0x38)
#define JZ_REG_TIMER_CTRL(x) (((x) * 0x10) + 0x3C)
#define JZ_TIMER_IRQ_HALF(x) BIT((x) + 0x10)
#define JZ_TIMER_IRQ_FULL(x) BIT(x)
#define JZ_TIMER_CTRL_PWM_ABBRUPT_SHUTDOWN BIT(9)
#define JZ_TIMER_CTRL_PWM_ACTIVE_LOW BIT(8)
#define JZ_TIMER_CTRL_PWM_ENABLE BIT(7)
#define JZ_TIMER_CTRL_PRESCALE_MASK 0x1c
#define JZ_TIMER_CTRL_PRESCALE_OFFSET 0x3
#define JZ_TIMER_CTRL_PRESCALE_1 (0 << 3)
#define JZ_TIMER_CTRL_PRESCALE_4 (1 << 3)
#define JZ_TIMER_CTRL_PRESCALE_16 (2 << 3)
#define JZ_TIMER_CTRL_PRESCALE_64 (3 << 3)
#define JZ_TIMER_CTRL_PRESCALE_256 (4 << 3)
#define JZ_TIMER_CTRL_PRESCALE_1024 (5 << 3)
#define JZ_TIMER_CTRL_PRESCALER(x) ((x) << JZ_TIMER_CTRL_PRESCALE_OFFSET)
#define JZ_TIMER_CTRL_SRC_EXT BIT(2)
#define JZ_TIMER_CTRL_SRC_RTC BIT(1)
#define JZ_TIMER_CTRL_SRC_PCLK BIT(0)
extern void __iomem *jz4740_timer_base;
void __init jz4740_timer_init(void);
void jz4740_timer_enable_watchdog(void);
void jz4740_timer_disable_watchdog(void);
static inline void jz4740_timer_stop(unsigned int timer)
{
writel(BIT(timer), jz4740_timer_base + JZ_REG_TIMER_STOP_SET);
}
static inline void jz4740_timer_start(unsigned int timer)
{
writel(BIT(timer), jz4740_timer_base + JZ_REG_TIMER_STOP_CLEAR);
}
static inline bool jz4740_timer_is_enabled(unsigned int timer)
{
return readb(jz4740_timer_base + JZ_REG_TIMER_ENABLE) & BIT(timer);
}
static inline void jz4740_timer_enable(unsigned int timer)
{
writeb(BIT(timer), jz4740_timer_base + JZ_REG_TIMER_ENABLE_SET);
}
static inline void jz4740_timer_disable(unsigned int timer)
{
writeb(BIT(timer), jz4740_timer_base + JZ_REG_TIMER_ENABLE_CLEAR);
}
static inline void jz4740_timer_set_period(unsigned int timer, uint16_t period)
{
writew(period, jz4740_timer_base + JZ_REG_TIMER_DFR(timer));
}
static inline void jz4740_timer_set_duty(unsigned int timer, uint16_t duty)
{
writew(duty, jz4740_timer_base + JZ_REG_TIMER_DHR(timer));
}
static inline void jz4740_timer_set_count(unsigned int timer, uint16_t count)
{
writew(count, jz4740_timer_base + JZ_REG_TIMER_CNT(timer));
}
static inline uint16_t jz4740_timer_get_count(unsigned int timer)
{
return readw(jz4740_timer_base + JZ_REG_TIMER_CNT(timer));
}
static inline void jz4740_timer_ack_full(unsigned int timer)
{
writel(JZ_TIMER_IRQ_FULL(timer), jz4740_timer_base + JZ_REG_TIMER_FLAG_CLEAR);
}
static inline void jz4740_timer_irq_full_enable(unsigned int timer)
{
writel(JZ_TIMER_IRQ_FULL(timer), jz4740_timer_base + JZ_REG_TIMER_FLAG_CLEAR);
writel(JZ_TIMER_IRQ_FULL(timer), jz4740_timer_base + JZ_REG_TIMER_MASK_CLEAR);
}
static inline void jz4740_timer_irq_full_disable(unsigned int timer)
{
writel(JZ_TIMER_IRQ_FULL(timer), jz4740_timer_base + JZ_REG_TIMER_MASK_SET);
}
static inline void jz4740_timer_set_ctrl(unsigned int timer, uint16_t ctrl)
{
writew(ctrl, jz4740_timer_base + JZ_REG_TIMER_CTRL(timer));
}
static inline uint16_t jz4740_timer_get_ctrl(unsigned int timer)
{
return readw(jz4740_timer_base + JZ_REG_TIMER_CTRL(timer));
}
#endif