mtk-lk/platform/common/include/timer/mt_gpt_v4.h

/* Copyright Statement:
 *
 * This software/firmware and related documentation ("MediaTek Software") are
 * protected under relevant copyright laws. The information contained herein
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 */
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#ifndef __MT_GPT_H__
#define __MT_GPT_H__
#include <platform/mt_typedefs.h>
#include <sys/types.h>

#define GPT_IRQEN_REG       ((volatile unsigned int*)(APXGPT_BASE))
#define GPT_IRQSTA_REG      ((volatile unsigned int*)(APXGPT_BASE+0x04))
#define GPT_IRQACK_REG      ((volatile unsigned int*)(APXGPT_BASE+0x08))

#define GPT5_CON_REG        ((volatile unsigned int*)(APXGPT_BASE+0x50))
#define GPT5_CLK_REG        ((volatile unsigned int*)(APXGPT_BASE+0x54))
#define GPT5_COUNT_REG      ((volatile unsigned int*)(APXGPT_BASE+0x58))
#define GPT5_COMPARE_REG    ((volatile unsigned int*)(APXGPT_BASE+0x5C))

#define GPT_MODE4_ONE_SHOT (0x00 << 4)
#define GPT_MODE4_REPEAT   (0x01 << 4)
#define GPT_MODE4_KEEP_GO  (0x02 << 4)
#define GPT_MODE4_FREERUN  (0x03 << 4)

#define GPT_CLEAR       2

#define GPT_ENABLE      1
#define GPT_DISABLE     0

#define GPT_CLK_SYS     (0x0 << 4)
#define GPT_CLK_RTC     (0x1 << 4)

#define GPT_DIV_BY_1        0
#define GPT_DIV_BY_2        1

#define CNTPCT_BIT_MASK_L 0x00000000FFFFFFFF
#define CNTPCT_1US_TICK       ((U32)13)           //    1000 / 76.92ns = 13.000
#define CNTPCT_1MS_TICK       ((U32)13000)        // 1000000 / 76.92ns = 13000.520

static inline U64 arch_counter_get_cntpct(void)
{
	U64 cval;

	__asm__ __volatile__("mrrc p15, 0, %Q0, %R0, c14" : "=r" (cval));
	return cval;
}

extern void gpt_busy_wait_us(unsigned int timeout_us);
extern void gpt_busy_wait_ms(unsigned int timeout_ms);

extern unsigned long get_timer(unsigned long base);
extern void mdelay(unsigned long msec);
extern void udelay(unsigned long usec);
extern void mtk_timer_init(void);

void gpt_one_shot_irq(unsigned int ms);
int gpt_irq_init(void);
void gpt_irq_ack();
extern unsigned int gpt4_tick2time_us (unsigned int tick);
extern unsigned int gpt4_get_current_tick (void);
extern bool gpt4_timeout_tick (U32 start_tick, U32 timeout_tick);
extern U32 gpt4_time2tick_us (U32 time_us);

#endif  /* !__MT_GPT_H__ */