summaryrefslogtreecommitdiffstats
path: root/arch/m68knommu/platform/5307/pit.c
diff options
context:
space:
mode:
Diffstat (limited to 'arch/m68knommu/platform/5307/pit.c')
-rw-r--r--arch/m68knommu/platform/5307/pit.c97
1 files changed, 0 insertions, 97 deletions
diff --git a/arch/m68knommu/platform/5307/pit.c b/arch/m68knommu/platform/5307/pit.c
deleted file mode 100644
index 173b754d1cd..00000000000
--- a/arch/m68knommu/platform/5307/pit.c
+++ /dev/null
@@ -1,97 +0,0 @@
-/***************************************************************************/
-
-/*
- * pit.c -- Freescale ColdFire PIT timer. Currently this type of
- * hardware timer only exists in the Freescale ColdFire
- * 5270/5271, 5282 and other CPUs.
- *
- * Copyright (C) 1999-2007, Greg Ungerer (gerg@snapgear.com)
- * Copyright (C) 2001-2004, SnapGear Inc. (www.snapgear.com)
- */
-
-/***************************************************************************/
-
-#include <linux/kernel.h>
-#include <linux/sched.h>
-#include <linux/param.h>
-#include <linux/init.h>
-#include <linux/interrupt.h>
-#include <linux/irq.h>
-#include <asm/machdep.h>
-#include <asm/io.h>
-#include <asm/coldfire.h>
-#include <asm/mcfpit.h>
-#include <asm/mcfsim.h>
-
-/***************************************************************************/
-
-/*
- * By default use timer1 as the system clock timer.
- */
-#define TA(a) (MCF_IPSBAR + MCFPIT_BASE1 + (a))
-
-/***************************************************************************/
-
-static irqreturn_t hw_tick(int irq, void *dummy)
-{
- unsigned short pcsr;
-
- /* Reset the ColdFire timer */
- pcsr = __raw_readw(TA(MCFPIT_PCSR));
- __raw_writew(pcsr | MCFPIT_PCSR_PIF, TA(MCFPIT_PCSR));
-
- return arch_timer_interrupt(irq, dummy);
-}
-
-/***************************************************************************/
-
-static struct irqaction coldfire_pit_irq = {
- .name = "timer",
- .flags = IRQF_DISABLED | IRQF_TIMER,
- .handler = hw_tick,
-};
-
-void hw_timer_init(void)
-{
- volatile unsigned char *icrp;
- volatile unsigned long *imrp;
-
- setup_irq(MCFINT_VECBASE + MCFINT_PIT1, &coldfire_pit_irq);
-
- icrp = (volatile unsigned char *) (MCF_IPSBAR + MCFICM_INTC0 +
- MCFINTC_ICR0 + MCFINT_PIT1);
- *icrp = ICR_INTRCONF;
-
- imrp = (volatile unsigned long *) (MCF_IPSBAR + MCFICM_INTC0 + MCFPIT_IMR);
- *imrp &= ~MCFPIT_IMR_IBIT;
-
- /* Set up PIT timer 1 as poll clock */
- __raw_writew(MCFPIT_PCSR_DISABLE, TA(MCFPIT_PCSR));
- __raw_writew(((MCF_CLK / 2) / 64) / HZ, TA(MCFPIT_PMR));
- __raw_writew(MCFPIT_PCSR_EN | MCFPIT_PCSR_PIE | MCFPIT_PCSR_OVW |
- MCFPIT_PCSR_RLD | MCFPIT_PCSR_CLK64, TA(MCFPIT_PCSR));
-}
-
-/***************************************************************************/
-
-unsigned long hw_timer_offset(void)
-{
- volatile unsigned long *ipr;
- unsigned long pmr, pcntr, offset;
-
- ipr = (volatile unsigned long *) (MCF_IPSBAR + MCFICM_INTC0 + MCFPIT_IMR);
-
- pmr = __raw_readw(TA(MCFPIT_PMR));
- pcntr = __raw_readw(TA(MCFPIT_PCNTR));
-
- /*
- * If we are still in the first half of the upcount and a
- * timer interrupt is pending, then add on a ticks worth of time.
- */
- offset = ((pmr - pcntr) * (1000000 / HZ)) / pmr;
- if ((offset < (1000000 / HZ / 2)) && (*ipr & MCFPIT_IMR_IBIT))
- offset += 1000000 / HZ;
- return offset;
-}
-
-/***************************************************************************/