1 files changed, 0 insertions, 341 deletions
diff --git a/chip/npcx/hwtimer.c b/chip/npcx/hwtimer.c
deleted file mode 100644
index 92f9843d09..0000000000
--- a/chip/npcx/hwtimer.c
+++ /dev/null
@@ -1,341 +0,0 @@
-/* Copyright 2014 The Chromium OS Authors. All rights reserved.
- * Use of this source code is governed by a BSD-style license that can be
- * found in the LICENSE file.
- */
-
-/* Hardware timers driver */
-
-#include "clock.h"
-#include "clock_chip.h"
-#include "common.h"
-#include "hooks.h"
-#include "hwtimer.h"
-#include "hwtimer_chip.h"
-#include "math_util.h"
-#include "registers.h"
-#include "console.h"
-#include "task.h"
-#include "timer.h"
-#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_INTERVAL_MASK (TICK_EVT_INTERVAL - 1) /* Mask of interval */
-#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;
-/* 32-bits event counter */
-static volatile uint32_t evt_cnt;
-/* Debugger information */
-#if DEBUG_TMR
-static volatile uint32_t evt_cnt_us_dbg;
-static volatile uint32_t cur_cnt_us_dbg;
-#endif
-
-#if !(DEBUG_TMR)
-#define CPUTS(...)
-#define CPRINTS(...)
-#else
-#define CPUTS(outstr) cputs(CC_CLOCK, outstr)
-#define CPRINTS(format, args...) cprints(CC_CLOCK, format, ## args)
-#endif
-
-/*****************************************************************************/
-/* Internal functions */
-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);
-
-	/* Clear timeout status */
-	SET_BIT(NPCX_ITCTS(itim_no), NPCX_ITCTS_TO_STS);
-
-	/* ITIM timeout interrupt enable */
-	SET_BIT(NPCX_ITCTS(itim_no), NPCX_ITCTS_TO_IE);
-
-	/* ITIM timeout wake-up enable */
-	SET_BIT(NPCX_ITCTS(itim_no), NPCX_ITCTS_TO_WUE);
-}
-
-/*****************************************************************************/
-/* 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;
-	/* Is deadline min value? */
-	if (evt_expired_us != 0 && evt_expired_us < deadline)
-		return;
-
-	/* mark min event value */
-	evt_expired_us = deadline;
-	evt_cnt_us = deadline - __hw_clock_source_read();
-#if DEBUG_TMR
-	evt_cnt_us_dbg = deadline - __hw_clock_source_read();
-#endif
-	/* Deadline is behind current timer */
-	if (evt_cnt_us < 0)
-		evt_cnt_us = 1;
-
-	/* Event module disable */
-	CLEAR_BIT(NPCX_ITCTS(ITIM_EVENT_NO), NPCX_ITCTS_ITEN);
-
-	/*
-	 * 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);
-	if (evt_cnt > TICK_EVT_MAX_CNT) {
-		CPRINTS("Event overflow! 0x%08x, us is %d",
-				evt_cnt, evt_cnt_us);
-		evt_cnt = TICK_EVT_MAX_CNT;
-	}
-
-	/* Wait for module disable to take effect before updating count */
-	while (IS_BIT_SET(NPCX_ITCTS(ITIM_EVENT_NO), NPCX_ITCTS_ITEN))
-		;
-
-	NPCX_ITCNT(ITIM_EVENT_NO) = MAX(evt_cnt, 1);
-
-	/* Event module enable */
-	SET_BIT(NPCX_ITCTS(ITIM_EVENT_NO), NPCX_ITCTS_ITEN);
-
-	/* Wait for module enable */
-	while (!IS_BIT_SET(NPCX_ITCTS(ITIM_EVENT_NO), NPCX_ITCTS_ITEN))
-		;
-
-	/* Enable interrupt of ITIM */
-	task_enable_irq(ITIM_INT(ITIM_EVENT_NO));
-}
-
-/* Returns the time-stamp of the next programmed event */
-uint32_t __hw_clock_event_get(void)
-{
-	if (evt_expired_us)
-		return evt_expired_us;
-	else /* No events. Give maximum deadline */
-		return EVT_MAX_EXPIRED_US;
-}
-
-/* Get current counter value of event timer */
-uint16_t __hw_clock_event_count(void)
-{
-	uint16_t cnt, cnt2;
-
-	cnt = NPCX_ITCNT(ITIM_EVENT_NO);
-	/* Wait for two consecutive equal values are read */
-	while ((cnt2 = NPCX_ITCNT(ITIM_EVENT_NO)) != cnt)
-		cnt = cnt2;
-
-	return cnt;
-}
-
-/* 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);
-	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);
-	/* Event hasn't been triggered */
-	else
-		sleep_time = FP_TO_INT((fp_inter_t)(pre_evt_cnt+1 - cnt) *
-				       evt_tick);
-
-	return sleep_time;
-}
-
-/* Cancel the next event programmed by __hw_clock_event_set */
-void __hw_clock_event_clear(void)
-{
-	/* ITIM event module disable */
-	CLEAR_BIT(NPCX_ITCTS(ITIM_EVENT_NO), NPCX_ITCTS_ITEN);
-
-	/* Disable interrupt of Event */
-	task_disable_irq(ITIM_INT(ITIM_EVENT_NO));
-
-	/* Clear event parameters */
-	evt_expired_us = 0;
-	evt_cnt = 0;
-}
-
-/* Irq for hwtimer event */
-void __hw_clock_event_irq(void)
-{
-	/* ITIM event module disable */
-	CLEAR_BIT(NPCX_ITCTS(ITIM_EVENT_NO), NPCX_ITCTS_ITEN);
-
-	/* Disable interrupt of event */
-	task_disable_irq(ITIM_INT(ITIM_EVENT_NO));
-
-	/* Clear timeout status for event */
-	SET_BIT(NPCX_ITCTS(ITIM_EVENT_NO), NPCX_ITCTS_TO_STS);
-
-	/* Clear event parameters */
-	evt_expired_us = 0;
-	evt_cnt = 0;
-
-	/* handle upper driver */
-	process_timers(0);
-
-#ifdef CONFIG_LOW_POWER_IDLE
-	/*
-	 * Set event for ITIM32 after process_timers() since no events set if
-	 * event's deadline is over 32 bits but current source clock isn't.
-	 * ITIM32 is based on apb2 and ec won't wake-up in deep-idle even if it
-	 * expires.
-	 */
-	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);
-
-/*****************************************************************************/
-/* HWTimer tick handlers */
-
-/* Modify preload counter of source clock. */
-void hw_clock_source_set_preload(uint32_t ts, uint8_t clear)
-{
-	/* ITIM32 module disable */
-	CLEAR_BIT(NPCX_ITCTS(ITIM_SYSTEM_NO), NPCX_ITCTS_ITEN);
-	CLEAR_BIT(NPCX_ITCTS(ITIM_SYSTEM_NO), NPCX_ITCTS_CKSEL);
-
-	/* Set preload counter to current time */
-	NPCX_ITCNT_SYSTEM = TICK_ITIM32_MAX_CNT - ts;
-	/* Clear timeout status or not */
-	if (clear)
-		SET_BIT(NPCX_ITCTS(ITIM_SYSTEM_NO), NPCX_ITCTS_TO_STS);
-	/* ITIM32 module enable */
-	SET_BIT(NPCX_ITCTS(ITIM_SYSTEM_NO), NPCX_ITCTS_ITEN);
-}
-
-/* Returns the value of the free-running counter used as clock. */
-uint32_t __hw_clock_source_read(void)
-{
-	uint32_t cnt, cnt2;
-
-	cnt = NPCX_ITCNT_SYSTEM;
-	/*
-	 * Wait for two consecutive equal values are read no matter
-	 * ITIM's source clock is APB2 or 32K since mux's delay.
-	 */
-	while ((cnt2 = NPCX_ITCNT_SYSTEM) != cnt)
-		cnt = cnt2;
-
-#if DEBUG_TMR
-	cur_cnt_us_dbg = TICK_ITIM32_MAX_CNT - cnt;
-#endif
-	return TICK_ITIM32_MAX_CNT - cnt;
-}
-
-/* Override the current value of the hardware counter */
-void __hw_clock_source_set(uint32_t ts)
-{
-#if DEBUG_TMR
-	cur_cnt_us_dbg = TICK_ITIM32_MAX_CNT - ts;
-#endif
-	hw_clock_source_set_preload(ts, 0);
-}
-
-/* Irq for hwtimer tick */
-void __hw_clock_source_irq(void)
-{
-	/* Is timeout trigger trigger? */
-	if (IS_BIT_SET(NPCX_ITCTS(ITIM_SYSTEM_NO), NPCX_ITCTS_TO_STS)) {
-		/* Restore ITIM32 preload counter value to maximum value */
-		hw_clock_source_set_preload(0, 1);
-		/* 32-bits timer count overflow */
-		process_timers(1);
-
-	} else { /* Handle soft trigger */
-		process_timers(0);
-#ifdef CONFIG_LOW_POWER_IDLE
-		/* Set event for ITIM32. Please see above for detail */
-		if (evt_expired_us == 0)
-			__hw_clock_event_set(EVT_MAX_EXPIRED_US);
-#endif
-	}
-}
-DECLARE_IRQ(ITIM_INT(ITIM_SYSTEM_NO), __hw_clock_source_irq, 3);
-
-/* Handle ITIM32 overflow if interrupt is disabled */
-void __hw_clock_handle_overflow(uint32_t clksrc_high)
-{
-	timestamp_t newtime;
-
-	/* Overflow occurred? */
-	if (!IS_BIT_SET(NPCX_ITCTS(ITIM_SYSTEM_NO), NPCX_ITCTS_TO_STS))
-		return;
-
-	/* Clear timeout status */
-	SET_BIT(NPCX_ITCTS(ITIM_SYSTEM_NO), NPCX_ITCTS_TO_STS);
-
-	/*
-	 * Restore ITIM32 preload counter value to maximum and execute
-	 * process_timers() later in ISR by trigger software interrupt in
-	 * force_time().
-	 */
-	newtime.le.hi = clksrc_high + 1;
-	newtime.le.lo = 0;
-	force_time(newtime);
-}
-
-static void update_prescaler(void)
-{
-	/*
-	 * prescaler to time tick
-	 * 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;
-	/* Set event tick unit = 1/32768 sec */
-	NPCX_ITPRE(ITIM_EVENT_NO) = 0;
-
-}
-DECLARE_HOOK(HOOK_FREQ_CHANGE, update_prescaler, HOOK_PRIO_DEFAULT);
-
-void __hw_early_init_hwtimer(uint32_t start_t)
-{
-	/*
-	 * 1. Use ITIM16-1 as internal time reading
-	 * 2. Use ITIM16-2 for event handling
-	 */
-
-	/* Enable clock for ITIM peripheral */
-	clock_enable_peripheral(CGC_OFFSET_TIMER, CGC_TIMER_MASK,
-			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_EVENT_NO, ITIM_SOURCE_CLOCK_32K);
-
-	/* Set initial prescaler */
-	update_prescaler();
-
-	hw_clock_source_set_preload(start_t, 1);
-}
-
-/* Note that early_init_hwtimer() has already executed by this point */
-int __hw_clock_source_init(uint32_t start_t)
-{
-	/*
-	 * Override the count with the start value now that counting has
-	 * started. Note that we may have already called this function from
-	 * gpio_pre_init(), but only in the case where we expected a reset, so
-	 * we should not get here in that case.
-	 */
-	__hw_early_init_hwtimer(start_t);
-
-	/* Enable interrupt of ITIM */
-	task_enable_irq(ITIM_INT(ITIM_SYSTEM_NO));
-
-	return ITIM_INT(ITIM_SYSTEM_NO);
-}