From deb77c8501f47ab228bf7cc7fd649e50603ed2cd Mon Sep 17 00:00:00 2001 From: Greg Ungerer Date: Wed, 6 Dec 2006 11:36:59 +1000 Subject: [PATCH] [PATCH] m68knommu: fix timer register access on 523x ColdFire platforms The 523x timer TRR register is a full 32bits, the older register (on other ColdFire parts) was only 16 bits. Use the right type of __raw_read when accessing it. Problem found by Yaroslav Vinogradov Signed-off-by: Greg Ungerer Signed-off-by: Linus Torvalds --- arch/m68knommu/platform/5307/timers.c | 16 ++++++++++++---- 1 file changed, 12 insertions(+), 4 deletions(-) diff --git a/arch/m68knommu/platform/5307/timers.c b/arch/m68knommu/platform/5307/timers.c index 24781f00933..e5668af1978 100644 --- a/arch/m68knommu/platform/5307/timers.c +++ b/arch/m68knommu/platform/5307/timers.c @@ -3,7 +3,7 @@ /* * timers.c -- generic ColdFire hardware timer support. * - * Copyright (C) 1999-2003, Greg Ungerer (gerg@snapgear.com) + * Copyright (C) 1999-2006, Greg Ungerer (gerg@snapgear.com) */ /***************************************************************************/ @@ -44,6 +44,14 @@ unsigned int mcf_timerlevel = 5; extern void mcf_settimericr(int timer, int level); extern int mcf_timerirqpending(int timer); +#if defined(CONFIG_M532x) +#define __raw_readtrr __raw_readl +#define __raw_writetrr __raw_writel +#else +#define __raw_readtrr __raw_readw +#define __raw_writetrr __raw_writew +#endif + /***************************************************************************/ void coldfire_tick(void) @@ -57,7 +65,7 @@ void coldfire_tick(void) void coldfire_timer_init(irqreturn_t (*handler)(int, void *, struct pt_regs *)) { __raw_writew(MCFTIMER_TMR_DISABLE, TA(MCFTIMER_TMR)); - __raw_writew(((MCF_BUSCLK / 16) / HZ), TA(MCFTIMER_TRR)); + __raw_writetrr(((MCF_BUSCLK / 16) / HZ), TA(MCFTIMER_TRR)); __raw_writew(MCFTIMER_TMR_ENORI | MCFTIMER_TMR_CLK16 | MCFTIMER_TMR_RESTART | MCFTIMER_TMR_ENABLE, TA(MCFTIMER_TMR)); @@ -76,7 +84,7 @@ unsigned long coldfire_timer_offset(void) unsigned long trr, tcn, offset; tcn = __raw_readw(TA(MCFTIMER_TCN)); - trr = __raw_readw(TA(MCFTIMER_TRR)); + trr = __raw_readtrr(TA(MCFTIMER_TRR)); offset = (tcn * (1000000 / HZ)) / trr; /* Check if we just wrapped the counters and maybe missed a tick */ @@ -120,7 +128,7 @@ void coldfire_profile_init(void) /* Set up TIMER 2 as high speed profile clock */ __raw_writew(MCFTIMER_TMR_DISABLE, PA(MCFTIMER_TMR)); - __raw_writew(((MCF_CLK / 16) / PROFILEHZ), PA(MCFTIMER_TRR)); + __raw_writetrr(((MCF_CLK / 16) / PROFILEHZ), PA(MCFTIMER_TRR)); __raw_writew(MCFTIMER_TMR_ENORI | MCFTIMER_TMR_CLK16 | MCFTIMER_TMR_RESTART | MCFTIMER_TMR_ENABLE, PA(MCFTIMER_TMR)); -- 2.41.1