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-rw-r--r--chip/lm4/hwtimer.c108
1 files changed, 0 insertions, 108 deletions
diff --git a/chip/lm4/hwtimer.c b/chip/lm4/hwtimer.c
deleted file mode 100644
index 44e1c2fb27..0000000000
--- a/chip/lm4/hwtimer.c
+++ /dev/null
@@ -1,108 +0,0 @@
-/* Copyright 2012 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 "common.h"
-#include "hooks.h"
-#include "hwtimer.h"
-#include "registers.h"
-#include "task.h"
-#include "timer.h"
-
-void __hw_clock_event_set(uint32_t deadline)
-{
- /* set the match on the deadline */
- LM4_TIMER_TAMATCHR(6) = 0xffffffff - deadline;
- /* Set the match interrupt */
- LM4_TIMER_IMR(6) |= 0x10;
-}
-
-uint32_t __hw_clock_event_get(void)
-{
- return 0xffffffff - LM4_TIMER_TAMATCHR(6);
-}
-
-void __hw_clock_event_clear(void)
-{
- /* Disable the match interrupt */
- LM4_TIMER_IMR(6) &= ~0x10;
-}
-
-uint32_t __hw_clock_source_read(void)
-{
- return 0xffffffff - LM4_TIMER_TAV(6);
-}
-
-void __hw_clock_source_set(uint32_t ts)
-{
- LM4_TIMER_TAV(6) = 0xffffffff - ts;
-}
-
-void __hw_clock_source_irq(void)
-{
- uint32_t status = LM4_TIMER_RIS(6);
-
- /* Clear interrupt */
- LM4_TIMER_ICR(6) = status;
-
- /*
- * Find expired timers and set the new timer deadline; check the IRQ
- * status to determine if the free-running counter overflowed.
- */
- process_timers(status & 0x01);
-}
-DECLARE_IRQ(LM4_IRQ_TIMERW0A, __hw_clock_source_irq, 1);
-
-static void update_prescaler(void)
-{
- /*
- * Set the prescaler to increment every microsecond. This takes
- * effect immediately, because the TAILD bit in TAMR is clear.
- */
- LM4_TIMER_TAPR(6) = clock_get_freq() / SECOND;
-}
-DECLARE_HOOK(HOOK_FREQ_CHANGE, update_prescaler, HOOK_PRIO_DEFAULT);
-
-int __hw_clock_source_init(uint32_t start_t)
-{
- /*
- * Use WTIMER0 (timer 6) configured as a free running counter with 1 us
- * period.
- */
-
- /* Enable WTIMER0 clock in run and sleep modes. */
- clock_enable_peripheral(CGC_OFFSET_WTIMER, 0x1,
- CGC_MODE_RUN | CGC_MODE_SLEEP);
-
- /* Ensure timer is disabled : TAEN = TBEN = 0 */
- LM4_TIMER_CTL(6) &= ~0x101;
- /* Set overflow interrupt */
- LM4_TIMER_IMR(6) = 0x1;
- /* 32-bit timer mode */
- LM4_TIMER_CFG(6) = 4;
-
- /* Set initial prescaler */
- update_prescaler();
-
- /* Periodic mode, counting down */
- LM4_TIMER_TAMR(6) = 0x22;
- /* Use the full 32-bits of the timer */
- LM4_TIMER_TAILR(6) = 0xffffffff;
- /* Starts counting in timer A */
- LM4_TIMER_CTL(6) |= 0x1;
-
- /*
- * Override the count with the start value now that counting has
- * started.
- */
- __hw_clock_source_set(start_t);
-
- /* Enable interrupt */
- task_enable_irq(LM4_IRQ_TIMERW0A);
-
- return LM4_IRQ_TIMERW0A;
-}