1 files changed, 0 insertions, 345 deletions
diff --git a/chip/it83xx/hwtimer.c b/chip/it83xx/hwtimer.c
deleted file mode 100644
index 291751a1cb..0000000000
--- a/chip/it83xx/hwtimer.c
+++ /dev/null
@@ -1,345 +0,0 @@
-/* Copyright 2013 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 "cpu.h"
-#include "common.h"
-#include "hooks.h"
-#include "hwtimer.h"
-#include "hwtimer_chip.h"
-#include "intc.h"
-#include "irq_chip.h"
-#include "registers.h"
-#include "task.h"
-#include "timer.h"
-#include "util.h"
-#include "watchdog.h"
-
-/*
- * The IT839X series support combinational mode for combining specific pairs of
- * timers: 3(24-bit) and 4(32-bit) / timer 5(24-bit) and 6(32-bit) /
- * timer 7(24-bit) and 8(32-bit).
- *
- * 32-bit MHz free-running counter: We combine (bit3@IT83XX_ETWD_ETXCTRL)
- * timer 3(TIMER_L) and 4(TIMER_H) and set clock source register to 8MHz.
- * In combinational mode, the counter register(IT83XX_ETWD_ETXCNTLR) of timer 3
- * is a fixed value = 7, and observation register(IT83XX_ETWD_ETXCNTOR)
- * of timer 4 will increase one per-us.
- *
- * For example, if
- * __hw_clock_source_set() set 0 us, the counter setting registers are
- * timer 3(TIMER_L) = 0x000007 (fixed, will not change)
- * timer 4(TIMER_H) = 0xffffffff
- *
- * Note:
- * In combinational mode, the counter observation value of
- * timer 4(TIMER_H), 6, 8 will in incrementing order.
- * For the above example, the counter observation value registers will be
- * timer 3(TIMER_L) 0x0000007
- * timer 4(TIMER_H) ~0xffffffff = 0x00000000
- *
- * The following will describe timer 3 and 4's operation in combinational mode:
- * 1. When timer 3(TIMER_L) has completed each counting (per-us),
-      timer 4(TIMER_H) observation value++.
- * 2. When timer 4(TIMER_H) observation value overflows:
- *    timer 4(TIMER_H) observation value = ~counter setting register.
- * 3. Timer 4(TIMER_H) interrupt occurs.
- *
- * IT839X only supports terminal count interrupt. We need a separate
- * 8 MHz 32-bit timer to handle events.
- */
-
-#define MS_TO_COUNT(hz, ms) ((hz) * (ms) / 1000)
-
-const struct ext_timer_ctrl_t et_ctrl_regs[] = {
-	{&IT83XX_INTC_IELMR19, &IT83XX_INTC_IPOLR19, &IT83XX_INTC_ISR19, 0x08,
-		IT83XX_IRQ_EXT_TIMER3},
-	{&IT83XX_INTC_IELMR19, &IT83XX_INTC_IPOLR19, &IT83XX_INTC_ISR19, 0x10,
-		IT83XX_IRQ_EXT_TIMER4},
-	{&IT83XX_INTC_IELMR19, &IT83XX_INTC_IPOLR19, &IT83XX_INTC_ISR19, 0x20,
-		IT83XX_IRQ_EXT_TIMER5},
-	{&IT83XX_INTC_IELMR19, &IT83XX_INTC_IPOLR19, &IT83XX_INTC_ISR19, 0x40,
-		IT83XX_IRQ_EXT_TIMER6},
-	{&IT83XX_INTC_IELMR19, &IT83XX_INTC_IPOLR19, &IT83XX_INTC_ISR19, 0x80,
-		IT83XX_IRQ_EXT_TIMER7},
-	{&IT83XX_INTC_IELMR10, &IT83XX_INTC_IPOLR10, &IT83XX_INTC_ISR10, 0x01,
-		IT83XX_IRQ_EXT_TMR8},
-};
-BUILD_ASSERT(ARRAY_SIZE(et_ctrl_regs) == EXT_TIMER_COUNT);
-
-static void free_run_timer_overflow(void)
-{
-	/*
-	 * If timer 4 (TIMER_H) counter register != 0xffffffff.
-	 * This usually happens once after sysjump, force time, and etc.
-	 * (when __hw_clock_source_set is called and param 'ts' != 0)
-	 */
-	if (IT83XX_ETWD_ETXCNTLR(FREE_EXT_TIMER_H) != 0xffffffff) {
-		/* set timer counter register */
-		IT83XX_ETWD_ETXCNTLR(FREE_EXT_TIMER_H) = 0xffffffff;
-		/* bit[1], timer reset */
-		IT83XX_ETWD_ETXCTRL(FREE_EXT_TIMER_L) |= BIT(1);
-	}
-	/* w/c interrupt status */
-	task_clear_pending_irq(et_ctrl_regs[FREE_EXT_TIMER_H].irq);
-	/* timer overflow */
-	process_timers(1);
-	update_exc_start_time();
-}
-
-static void event_timer_clear_pending_isr(void)
-{
-	/* w/c interrupt status */
-	task_clear_pending_irq(et_ctrl_regs[EVENT_EXT_TIMER].irq);
-}
-
-uint32_t __ram_code __hw_clock_source_read(void)
-{
-#ifdef IT83XX_EXT_OBSERVATION_REG_READ_TWO_TIMES
-	/*
-	 * In combinational mode, the counter observation register of
-	 * timer 4(TIMER_H) will increment.
-	 */
-	return ext_observation_reg_read(FREE_EXT_TIMER_H);
-#else
-	return IT83XX_ETWD_ETXCNTOR(FREE_EXT_TIMER_H);
-#endif
-}
-
-void __hw_clock_source_set(uint32_t ts)
-{
-	/* counting down timer, microseconds to timer counter register */
-	IT83XX_ETWD_ETXCNTLR(FREE_EXT_TIMER_H) = 0xffffffff - ts;
-	/* bit[1], timer reset */
-	IT83XX_ETWD_ETXCTRL(FREE_EXT_TIMER_L) |= BIT(1);
-}
-
-void __hw_clock_event_set(uint32_t deadline)
-{
-	uint32_t wait;
-	/* bit0, disable event timer */
-	IT83XX_ETWD_ETXCTRL(EVENT_EXT_TIMER) &= ~BIT(0);
-	/* w/c interrupt status */
-	event_timer_clear_pending_isr();
-	/* microseconds to timer counter */
-	wait = deadline - __hw_clock_source_read();
-	IT83XX_ETWD_ETXCNTLR(EVENT_EXT_TIMER) =
-		wait < EVENT_TIMER_COUNT_TO_US(0xffffffff) ?
-		EVENT_TIMER_US_TO_COUNT(wait) : 0xffffffff;
-	/* enable and re-start timer */
-	IT83XX_ETWD_ETXCTRL(EVENT_EXT_TIMER) |= 0x03;
-	task_enable_irq(et_ctrl_regs[EVENT_EXT_TIMER].irq);
-}
-
-uint32_t __hw_clock_event_get(void)
-{
-	uint32_t next_event_us = __hw_clock_source_read();
-
-	/* bit0, event timer is enabled */
-	if (IT83XX_ETWD_ETXCTRL(EVENT_EXT_TIMER) & BIT(0)) {
-		/* timer counter observation value to microseconds */
-		next_event_us += EVENT_TIMER_COUNT_TO_US(
-#ifdef IT83XX_EXT_OBSERVATION_REG_READ_TWO_TIMES
-			ext_observation_reg_read(EVENT_EXT_TIMER));
-#else
-			IT83XX_ETWD_ETXCNTOR(EVENT_EXT_TIMER));
-#endif
-	}
-	return next_event_us;
-}
-
-void __hw_clock_event_clear(void)
-{
-	/* stop event timer */
-	ext_timer_stop(EVENT_EXT_TIMER, 1);
-	event_timer_clear_pending_isr();
-}
-
-int __hw_clock_source_init(uint32_t start_t)
-{
-	/* bit3, timer 3 and timer 4 combinational mode */
-	IT83XX_ETWD_ETXCTRL(FREE_EXT_TIMER_L) |= BIT(3);
-	/* init free running timer (timer 4, TIMER_H), clock source is 8mhz */
-	ext_timer_ms(FREE_EXT_TIMER_H, EXT_PSR_8M_HZ, 0, 1, 0xffffffff, 1, 1);
-	/* 1us counter setting (timer 3, TIMER_L) */
-	ext_timer_ms(FREE_EXT_TIMER_L, EXT_PSR_8M_HZ, 1, 0, 7, 1, 1);
-	__hw_clock_source_set(start_t);
-	/* init event timer */
-	ext_timer_ms(EVENT_EXT_TIMER, EXT_PSR_8M_HZ, 0, 0, 0xffffffff, 1, 1);
-	/* returns the IRQ number of event timer */
-	return et_ctrl_regs[EVENT_EXT_TIMER].irq;
-}
-
-static void __hw_clock_source_irq(void)
-{
-	/* Determine interrupt number. */
-	int irq = intc_get_ec_int();
-
-	/* SW/HW interrupt of event timer. */
-	if (irq == et_ctrl_regs[EVENT_EXT_TIMER].irq) {
-		IT83XX_ETWD_ETXCNTLR(EVENT_EXT_TIMER) = 0xffffffff;
-		IT83XX_ETWD_ETXCTRL(EVENT_EXT_TIMER) |= BIT(1);
-		event_timer_clear_pending_isr();
-		process_timers(0);
-		return;
-	}
-
-#ifdef CONFIG_WATCHDOG
-	/*
-	 * Both the external timer for the watchdog warning and the HW timer
-	 * go through this irq. So, if this interrupt was caused by watchdog
-	 * warning timer, then call that function.
-	 */
-	if (irq == et_ctrl_regs[WDT_EXT_TIMER].irq) {
-		watchdog_warning_irq();
-		return;
-	}
-#endif
-
-#ifdef CONFIG_FANS
-	if (irq == et_ctrl_regs[FAN_CTRL_EXT_TIMER].irq) {
-		fan_ext_timer_interrupt();
-		return;
-	}
-#endif
-
-	/* Interrupt of free running timer TIMER_H. */
-	if (irq == et_ctrl_regs[FREE_EXT_TIMER_H].irq) {
-		free_run_timer_overflow();
-		return;
-	}
-
-	/*
-	 * This interrupt is used to wakeup EC from sleep mode
-	 * to complete PLL frequency change.
-	 */
-	if (irq == et_ctrl_regs[LOW_POWER_EXT_TIMER].irq) {
-		ext_timer_stop(LOW_POWER_EXT_TIMER, 1);
-		return;
-	}
-}
-DECLARE_IRQ(CPU_INT_GROUP_3, __hw_clock_source_irq, 1);
-
-#ifdef IT83XX_EXT_OBSERVATION_REG_READ_TWO_TIMES
-/* Number of CPU cycles in 125 us */
-#define CYCLES_125NS (125*(PLL_CLOCK/SECOND) / 1000)
-uint32_t __ram_code ext_observation_reg_read(enum ext_timer_sel ext_timer)
-{
-	uint32_t prev_mask = read_clear_int_mask();
-	uint32_t val;
-
-	asm volatile(
-		/* read observation register for the first time */
-		"lwi %0,[%1]\n\t"
-		/*
-		 * the delay time between reading the first and second
-		 * observation registers need to be greater than 0.125us and
-		 * smaller than 0.250us.
-		 */
-		".rept %2\n\t"
-		"nop\n\t"
-		".endr\n\t"
-		/* read for the second time */
-		"lwi %0,[%1]\n\t"
-		: "=&r"(val)
-		: "r"((uintptr_t) &IT83XX_ETWD_ETXCNTOR(ext_timer)),
-			"i"(CYCLES_125NS));
-	/* restore interrupts */
-	set_int_mask(prev_mask);
-
-	return val;
-}
-#endif
-
-void ext_timer_start(enum ext_timer_sel ext_timer, int en_irq)
-{
-	/* enable external timer n */
-	IT83XX_ETWD_ETXCTRL(ext_timer) |= 0x03;
-
-	if (en_irq) {
-		task_clear_pending_irq(et_ctrl_regs[ext_timer].irq);
-		task_enable_irq(et_ctrl_regs[ext_timer].irq);
-	}
-}
-
-void ext_timer_stop(enum ext_timer_sel ext_timer, int dis_irq)
-{
-	/* disable external timer n */
-	IT83XX_ETWD_ETXCTRL(ext_timer) &= ~0x01;
-
-	if (dis_irq)
-		task_disable_irq(et_ctrl_regs[ext_timer].irq);
-}
-
-static void ext_timer_ctrl(enum ext_timer_sel ext_timer,
-		enum ext_timer_clock_source ext_timer_clock,
-		int start,
-		int with_int,
-		int32_t count)
-{
-	uint8_t intc_mask;
-
-	/* rising-edge-triggered */
-	intc_mask = et_ctrl_regs[ext_timer].mask;
-	*et_ctrl_regs[ext_timer].mode |= intc_mask;
-	*et_ctrl_regs[ext_timer].polarity &= ~intc_mask;
-
-	/* clear interrupt status */
-	task_clear_pending_irq(et_ctrl_regs[ext_timer].irq);
-
-	/* These bits control the clock input source to the exttimer 3 - 8 */
-	IT83XX_ETWD_ETXPSR(ext_timer) = ext_timer_clock;
-
-	/* The count number of external timer n. */
-	IT83XX_ETWD_ETXCNTLR(ext_timer) = count;
-
-	ext_timer_stop(ext_timer, 0);
-	if (start)
-		ext_timer_start(ext_timer, 0);
-
-	if (with_int)
-		task_enable_irq(et_ctrl_regs[ext_timer].irq);
-	else
-		task_disable_irq(et_ctrl_regs[ext_timer].irq);
-}
-
-int ext_timer_ms(enum ext_timer_sel ext_timer,
-		enum ext_timer_clock_source ext_timer_clock,
-		int start,
-		int with_int,
-		int32_t ms,
-		int first_time_enable,
-		int raw)
-{
-	uint32_t count;
-
-	if (raw) {
-		count = ms;
-	} else {
-		if (ext_timer_clock == EXT_PSR_32P768K_HZ)
-			count = MS_TO_COUNT(32768, ms);
-		else if (ext_timer_clock == EXT_PSR_1P024K_HZ)
-			count = MS_TO_COUNT(1024, ms);
-		else if (ext_timer_clock == EXT_PSR_32_HZ)
-			count = MS_TO_COUNT(32, ms);
-		else if (ext_timer_clock == EXT_PSR_8M_HZ)
-			count = 8000 * ms;
-		else
-			return -1;
-	}
-
-	if (count == 0)
-		return -3;
-
-	if (first_time_enable) {
-		ext_timer_start(ext_timer, 0);
-		ext_timer_stop(ext_timer, 0);
-	}
-
-	ext_timer_ctrl(ext_timer, ext_timer_clock, start, with_int, count);
-
-	return 0;
-}