diff options
Diffstat (limited to 'chip/it83xx/hwtimer_chip.h')
| -rw-r--r-- | chip/it83xx/hwtimer_chip.h | 23 |
1 files changed, 22 insertions, 1 deletions
diff --git a/chip/it83xx/hwtimer_chip.h b/chip/it83xx/hwtimer_chip.h index 690505dcb1..18ee3f0f13 100644 --- a/chip/it83xx/hwtimer_chip.h +++ b/chip/it83xx/hwtimer_chip.h @@ -8,11 +8,30 @@ #ifndef __CROS_EC_HWTIMER_CHIP_H #define __CROS_EC_HWTIMER_CHIP_H +#define TIMER_COUNT_1US_SHIFT 3 + +/* Combinational mode, microseconds to timer counter setting register */ +#define TIMER_H_US_TO_COUNT(us) ((us) >> (24 - TIMER_COUNT_1US_SHIFT)) +#define TIMER_L_US_TO_COUNT(us) (((us) << TIMER_COUNT_1US_SHIFT) & 0x00ffffff) + +/* Free running timer counter observation value to microseconds */ +#define TIMER_H_COUNT_TO_US(cnt) ((~(cnt)) << (24 - TIMER_COUNT_1US_SHIFT)) +#define TIMER_L_COUNT_TO_US(cnt) (((cnt) & 0x00ffffff) >> TIMER_COUNT_1US_SHIFT) + +/* Microseconds to event timer counter setting register */ +#define EVENT_TIMER_US_TO_COUNT(us) ((us) << TIMER_COUNT_1US_SHIFT) +/* Event timer counter observation value to microseconds */ +#define EVENT_TIMER_COUNT_TO_US(cnt) ((cnt) >> TIMER_COUNT_1US_SHIFT) + +#define TIMER_H_CNT_COMP TIMER_H_US_TO_COUNT(0xffffffff) +#define TIMER_L_CNT_COMP TIMER_L_US_TO_COUNT(0xffffffff) + #define FREE_EXT_TIMER_L EXT_TIMER_3 #define FREE_EXT_TIMER_H EXT_TIMER_4 #define FAN_CTRL_EXT_TIMER EXT_TIMER_5 #define EVENT_EXT_TIMER EXT_TIMER_6 #define WDT_EXT_TIMER EXT_TIMER_7 +#define LOW_POWER_EXT_TIMER EXT_TIMER_8 enum ext_timer_clock_source { EXT_PSR_32P768K_HZ = 0, @@ -35,7 +54,7 @@ enum ext_timer_sel { EXT_TIMER_6, /* For WDT capture important state information before being reset */ EXT_TIMER_7, - /* reserved */ + /* HW timer for low power mode */ EXT_TIMER_8, EXT_TIMER_COUNT, }; @@ -43,6 +62,7 @@ enum ext_timer_sel { struct ext_timer_ctrl_t { volatile uint8_t *mode; volatile uint8_t *polarity; + volatile uint8_t *isr; uint8_t mask; uint8_t irq; }; @@ -52,6 +72,7 @@ void ext_timer_start(enum ext_timer_sel ext_timer, int en_irq); void ext_timer_stop(enum ext_timer_sel ext_timer, int dis_irq); void fan_ext_timer_interrupt(void); void update_exc_start_time(void); + /** * Config a external timer. * |