diff options
Diffstat (limited to 'arch/m68k/cpu/mcf547x_8x/slicetimer.c')
| -rw-r--r-- | arch/m68k/cpu/mcf547x_8x/slicetimer.c | 38 |
1 files changed, 21 insertions, 17 deletions
diff --git a/arch/m68k/cpu/mcf547x_8x/slicetimer.c b/arch/m68k/cpu/mcf547x_8x/slicetimer.c index ee2e35bd51..25dd2aed56 100644 --- a/arch/m68k/cpu/mcf547x_8x/slicetimer.c +++ b/arch/m68k/cpu/mcf547x_8x/slicetimer.c @@ -1,5 +1,5 @@ /* - * (C) Copyright 2007 Freescale Semiconductor, Inc. + * (C) Copyright 2007, 2012 Freescale Semiconductor, Inc. * TsiChung Liew (Tsi-Chung.Liew@freescale.com) * * See file CREDITS for list of people who contributed to this @@ -25,6 +25,7 @@ #include <asm/timer.h> #include <asm/immap.h> +#include <asm/io.h> DECLARE_GLOBAL_DATA_PTR; @@ -42,31 +43,32 @@ extern void dtimer_intr_setup(void); void __udelay(unsigned long usec) { - volatile slt_t *timerp = (slt_t *) (CONFIG_SYS_UDELAY_BASE); + slt_t *timerp = (slt_t *) (CONFIG_SYS_UDELAY_BASE); u32 now, freq; /* 1 us period */ freq = CONFIG_SYS_TIMER_PRESCALER; - timerp->cr = 0; /* Disable */ - timerp->tcnt = usec * freq; - timerp->cr = SLT_CR_TEN; + /* Disable */ + out_be32(&timerp->cr, 0); + out_be32(&timerp->tcnt, usec * freq); + out_be32(&timerp->cr, SLT_CR_TEN); - now = timerp->cnt; + now = in_be32(&timerp->cnt); while (now != 0) - now = timerp->cnt; + now = in_be32(&timerp->cnt); - timerp->sr |= SLT_SR_ST; - timerp->cr = 0; + setbits_be32(&timerp->sr, SLT_SR_ST); + out_be32(&timerp->cr, 0); } void dtimer_interrupt(void *not_used) { - volatile slt_t *timerp = (slt_t *) (CONFIG_SYS_TMR_BASE); + slt_t *timerp = (slt_t *) (CONFIG_SYS_TMR_BASE); /* check for timer interrupt asserted */ if ((CONFIG_SYS_TMRPND_REG & CONFIG_SYS_TMRINTR_MASK) == CONFIG_SYS_TMRINTR_PEND) { - timerp->sr |= SLT_SR_ST; + setbits_be32(&timerp->sr, SLT_SR_ST); timestamp++; return; } @@ -74,25 +76,27 @@ void dtimer_interrupt(void *not_used) int timer_init(void) { - volatile slt_t *timerp = (slt_t *) (CONFIG_SYS_TMR_BASE); + slt_t *timerp = (slt_t *) (CONFIG_SYS_TMR_BASE); timestamp = 0; - timerp->cr = 0; /* disable timer */ - timerp->tcnt = 0; - timerp->sr = SLT_SR_BE | SLT_SR_ST; /* clear status */ + /* disable timer */ + out_be32(&timerp->cr, 0); + out_be32(&timerp->tcnt, 0); + /* clear status */ + out_be32(&timerp->sr, SLT_SR_BE | SLT_SR_ST); /* initialize and enable timer interrupt */ irq_install_handler(CONFIG_SYS_TMRINTR_NO, dtimer_interrupt, 0); /* Interrupt every ms */ - timerp->tcnt = 1000 * CONFIG_SYS_TIMER_PRESCALER; + out_be32(&timerp->tcnt, 1000 * CONFIG_SYS_TIMER_PRESCALER); dtimer_intr_setup(); /* set a period of 1us, set timer mode to restart and enable timer and interrupt */ - timerp->cr = SLT_CR_RUN | SLT_CR_IEN | SLT_CR_TEN; + out_be32(&timerp->cr, SLT_CR_RUN | SLT_CR_IEN | SLT_CR_TEN); return 0; } |