diff options
Diffstat (limited to 'chip/npcx/hwtimer.c')
| -rw-r--r-- | chip/npcx/hwtimer.c | 37 |
1 files changed, 18 insertions, 19 deletions
diff --git a/chip/npcx/hwtimer.c b/chip/npcx/hwtimer.c index b479f237c0..dfa06f69b2 100644 --- a/chip/npcx/hwtimer.c +++ b/chip/npcx/hwtimer.c @@ -1,4 +1,4 @@ -/* Copyright 2014 The Chromium OS Authors. All rights reserved. +/* Copyright 2014 The ChromiumOS Authors * Use of this source code is governed by a BSD-style license that can be * found in the LICENSE file. */ @@ -19,10 +19,10 @@ #include "util.h" /* Depth of event timer */ -#define TICK_EVT_DEPTH 16 /* Depth of event timer Unit: bits */ -#define TICK_EVT_INTERVAL BIT(TICK_EVT_DEPTH) /* Unit: us */ +#define TICK_EVT_DEPTH 16 /* Depth of event timer Unit: bits */ +#define TICK_EVT_INTERVAL BIT(TICK_EVT_DEPTH) /* Unit: us */ #define TICK_EVT_INTERVAL_MASK (TICK_EVT_INTERVAL - 1) /* Mask of interval */ -#define TICK_EVT_MAX_CNT (TICK_EVT_INTERVAL - 1) /* Maximum event counter */ +#define TICK_EVT_MAX_CNT (TICK_EVT_INTERVAL - 1) /* Maximum event counter */ /* Time when event will be expired unit:us */ static volatile uint32_t evt_expired_us; @@ -39,7 +39,7 @@ static volatile uint32_t cur_cnt_us_dbg; #define CPRINTS(...) #else #define CPUTS(outstr) cputs(CC_CLOCK, outstr) -#define CPRINTS(format, args...) cprints(CC_CLOCK, format, ## args) +#define CPRINTS(format, args...) cprints(CC_CLOCK, format, ##args) #endif /*****************************************************************************/ @@ -48,7 +48,7 @@ void init_hw_timer(int itim_no, enum ITIM_SOURCE_CLOCK_T source) { /* Select which clock to use for this timer */ UPDATE_BIT(NPCX_ITCTS(itim_no), NPCX_ITCTS_CKSEL, - source != ITIM_SOURCE_CLOCK_APB2); + source != ITIM_SOURCE_CLOCK_APB2); /* Clear timeout status */ SET_BIT(NPCX_ITCTS(itim_no), NPCX_ITCTS_TO_STS); @@ -64,8 +64,8 @@ void init_hw_timer(int itim_no, enum ITIM_SOURCE_CLOCK_T source) /* HWTimer event handlers */ void __hw_clock_event_set(uint32_t deadline) { - fp_t inv_evt_tick = FLOAT_TO_FP(INT_32K_CLOCK/(float)SECOND); - int32_t evt_cnt_us; + fp_t inv_evt_tick = FLOAT_TO_FP(INT_32K_CLOCK / (float)SECOND); + int32_t evt_cnt_us; /* Is deadline min value? */ if (evt_expired_us != 0 && evt_expired_us < deadline) return; @@ -87,10 +87,10 @@ void __hw_clock_event_set(uint32_t deadline) * ITIM count down : event expired : Unit: 1/32768 sec * It must exceed evt_expired_us for process_timers function */ - evt_cnt = FP_TO_INT((fp_inter_t)(evt_cnt_us) * inv_evt_tick); + evt_cnt = FP_TO_INT((fp_inter_t)(evt_cnt_us)*inv_evt_tick); if (evt_cnt > TICK_EVT_MAX_CNT) { - CPRINTS("Event overflow! 0x%08x, us is %d", - evt_cnt, evt_cnt_us); + CPRINTS("Event overflow! 0x%08x, us is %d", evt_cnt, + evt_cnt_us); evt_cnt = TICK_EVT_MAX_CNT; } @@ -136,16 +136,17 @@ uint16_t __hw_clock_event_count(void) /* Returns time delay cause of deep idle */ uint32_t __hw_clock_get_sleep_time(uint16_t pre_evt_cnt) { - fp_t evt_tick = FLOAT_TO_FP(SECOND/(float)INT_32K_CLOCK); + fp_t evt_tick = FLOAT_TO_FP(SECOND / (float)INT_32K_CLOCK); uint32_t sleep_time; uint16_t cnt = __hw_clock_event_count(); /* Event has been triggered but timer ISR doesn't handle it */ if (IS_BIT_SET(NPCX_ITCTS(ITIM_EVENT_NO), NPCX_ITCTS_TO_STS)) - sleep_time = FP_TO_INT((fp_inter_t)(pre_evt_cnt+1) * evt_tick); + sleep_time = + FP_TO_INT((fp_inter_t)(pre_evt_cnt + 1) * evt_tick); /* Event hasn't been triggered */ else - sleep_time = FP_TO_INT((fp_inter_t)(pre_evt_cnt+1 - cnt) * + sleep_time = FP_TO_INT((fp_inter_t)(pre_evt_cnt + 1 - cnt) * evt_tick); return sleep_time; @@ -194,7 +195,6 @@ static void __hw_clock_event_irq(void) if (evt_expired_us == 0) __hw_clock_event_set(EVT_MAX_EXPIRED_US); #endif - } DECLARE_IRQ(ITIM_INT(ITIM_EVENT_NO), __hw_clock_event_irq, 3); @@ -295,10 +295,9 @@ static void update_prescaler(void) * Ttick_unit = (PRE_8+1) * Tapb2_clk * PRE_8 = (Ttick_unit/Tapb2_clk) -1 */ - NPCX_ITPRE(ITIM_SYSTEM_NO) = (clock_get_apb2_freq() / SECOND) - 1; + NPCX_ITPRE(ITIM_SYSTEM_NO) = (clock_get_apb2_freq() / SECOND) - 1; /* Set event tick unit = 1/32768 sec */ NPCX_ITPRE(ITIM_EVENT_NO) = 0; - } DECLARE_HOOK(HOOK_FREQ_CHANGE, update_prescaler, HOOK_PRIO_DEFAULT); @@ -311,10 +310,10 @@ void __hw_early_init_hwtimer(uint32_t start_t) /* Enable clock for ITIM peripheral */ clock_enable_peripheral(CGC_OFFSET_TIMER, CGC_TIMER_MASK, - CGC_MODE_RUN | CGC_MODE_SLEEP); + CGC_MODE_RUN | CGC_MODE_SLEEP); /* init tick & event timer first */ - init_hw_timer(ITIM_SYSTEM_NO, ITIM_SOURCE_CLOCK_APB2); + init_hw_timer(ITIM_SYSTEM_NO, ITIM_SOURCE_CLOCK_APB2); init_hw_timer(ITIM_EVENT_NO, ITIM_SOURCE_CLOCK_32K); /* Set initial prescaler */ |