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-rw-r--r--arch/m68knommu/platform/coldfire/sltimers.c145
1 files changed, 0 insertions, 145 deletions
diff --git a/arch/m68knommu/platform/coldfire/sltimers.c b/arch/m68knommu/platform/coldfire/sltimers.c
deleted file mode 100644
index 0a1b937c3e18..000000000000
--- a/arch/m68knommu/platform/coldfire/sltimers.c
+++ /dev/null
@@ -1,145 +0,0 @@
-/***************************************************************************/
-
-/*
- * sltimers.c -- generic ColdFire slice timer support.
- *
- * Copyright (C) 2009-2010, Philippe De Muyter <phdm@macqel.be>
- * based on
- * timers.c -- generic ColdFire hardware timer support.
- * Copyright (C) 1999-2008, Greg Ungerer <gerg@snapgear.com>
- */
-
-/***************************************************************************/
-
-#include <linux/kernel.h>
-#include <linux/init.h>
-#include <linux/sched.h>
-#include <linux/interrupt.h>
-#include <linux/irq.h>
-#include <linux/profile.h>
-#include <linux/clocksource.h>
-#include <asm/io.h>
-#include <asm/traps.h>
-#include <asm/machdep.h>
-#include <asm/coldfire.h>
-#include <asm/mcfslt.h>
-#include <asm/mcfsim.h>
-
-/***************************************************************************/
-
-#ifdef CONFIG_HIGHPROFILE
-
-/*
- * By default use Slice Timer 1 as the profiler clock timer.
- */
-#define PA(a) (MCF_MBAR + MCFSLT_TIMER1 + (a))
-
-/*
- * Choose a reasonably fast profile timer. Make it an odd value to
- * try and get good coverage of kernel operations.
- */
-#define PROFILEHZ 1013
-
-irqreturn_t mcfslt_profile_tick(int irq, void *dummy)
-{
- /* Reset Slice Timer 1 */
- __raw_writel(MCFSLT_SSR_BE | MCFSLT_SSR_TE, PA(MCFSLT_SSR));
- if (current->pid)
- profile_tick(CPU_PROFILING);
- return IRQ_HANDLED;
-}
-
-static struct irqaction mcfslt_profile_irq = {
- .name = "profile timer",
- .flags = IRQF_DISABLED | IRQF_TIMER,
- .handler = mcfslt_profile_tick,
-};
-
-void mcfslt_profile_init(void)
-{
- printk(KERN_INFO "PROFILE: lodging TIMER 1 @ %dHz as profile timer\n",
- PROFILEHZ);
-
- setup_irq(MCF_IRQ_PROFILER, &mcfslt_profile_irq);
-
- /* Set up TIMER 2 as high speed profile clock */
- __raw_writel(MCF_BUSCLK / PROFILEHZ - 1, PA(MCFSLT_STCNT));
- __raw_writel(MCFSLT_SCR_RUN | MCFSLT_SCR_IEN | MCFSLT_SCR_TEN,
- PA(MCFSLT_SCR));
-
-}
-
-#endif /* CONFIG_HIGHPROFILE */
-
-/***************************************************************************/
-
-/*
- * By default use Slice Timer 0 as the system clock timer.
- */
-#define TA(a) (MCF_MBAR + MCFSLT_TIMER0 + (a))
-
-static u32 mcfslt_cycles_per_jiffy;
-static u32 mcfslt_cnt;
-
-static irqreturn_t mcfslt_tick(int irq, void *dummy)
-{
- /* Reset Slice Timer 0 */
- __raw_writel(MCFSLT_SSR_BE | MCFSLT_SSR_TE, TA(MCFSLT_SSR));
- mcfslt_cnt += mcfslt_cycles_per_jiffy;
- return arch_timer_interrupt(irq, dummy);
-}
-
-static struct irqaction mcfslt_timer_irq = {
- .name = "timer",
- .flags = IRQF_DISABLED | IRQF_TIMER,
- .handler = mcfslt_tick,
-};
-
-static cycle_t mcfslt_read_clk(struct clocksource *cs)
-{
- unsigned long flags;
- u32 cycles;
- u16 scnt;
-
- local_irq_save(flags);
- scnt = __raw_readl(TA(MCFSLT_SCNT));
- cycles = mcfslt_cnt;
- local_irq_restore(flags);
-
- /* substract because slice timers count down */
- return cycles - scnt;
-}
-
-static struct clocksource mcfslt_clk = {
- .name = "slt",
- .rating = 250,
- .read = mcfslt_read_clk,
- .shift = 20,
- .mask = CLOCKSOURCE_MASK(32),
- .flags = CLOCK_SOURCE_IS_CONTINUOUS,
-};
-
-void hw_timer_init(void)
-{
- mcfslt_cycles_per_jiffy = MCF_BUSCLK / HZ;
- /*
- * The coldfire slice timer (SLT) runs from STCNT to 0 included,
- * then STCNT again and so on. It counts thus actually
- * STCNT + 1 steps for 1 tick, not STCNT. So if you want
- * n cycles, initialize STCNT with n - 1.
- */
- __raw_writel(mcfslt_cycles_per_jiffy - 1, TA(MCFSLT_STCNT));
- __raw_writel(MCFSLT_SCR_RUN | MCFSLT_SCR_IEN | MCFSLT_SCR_TEN,
- TA(MCFSLT_SCR));
- /* initialize mcfslt_cnt knowing that slice timers count down */
- mcfslt_cnt = mcfslt_cycles_per_jiffy;
-
- setup_irq(MCF_IRQ_TIMER, &mcfslt_timer_irq);
-
- mcfslt_clk.mult = clocksource_hz2mult(MCF_BUSCLK, mcfslt_clk.shift);
- clocksource_register(&mcfslt_clk);
-
-#ifdef CONFIG_HIGHPROFILE
- mcfslt_profile_init();
-#endif
-}