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[PATCH] m68knommu: extract common timer code for 68328 processor
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Rework the 68x328 configuration and setup code. All 68x328 varient
share the same timer hardware, so extract that into its own file,
instead of keeping copies in each processors setup code.

Signed-off-by: Greg Ungerer <gerg@uclinux.com>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
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Greg Ungerer authored and Linus Torvalds committed Sep 9, 2005
1 parent 8c2b58c commit ee72112
Showing 1 changed file with 21 additions and 73 deletions.
94 changes: 21 additions & 73 deletions arch/m68knommu/platform/68328/config.c
Original file line number Diff line number Diff line change
@@ -1,5 +1,7 @@
/***************************************************************************/

/*
* linux/arch/$(ARCH)/platform/$(PLATFORM)/config.c
* linux/arch/m68knommu/platform/68328/config.c
*
* Copyright (C) 1993 Hamish Macdonald
* Copyright (C) 1999 D. Jeff Dionne
Expand All @@ -11,6 +13,8 @@
* VZ Support/Fixes Evan Stawnyczy <e@lineo.ca>
*/

/***************************************************************************/

#include <asm/dbg.h>
#include <stdarg.h>
#include <linux/config.h>
Expand All @@ -29,76 +33,16 @@
#include <asm/machdep.h>
#include <asm/MC68328.h>

/***************************************************************************/

void BSP_sched_init(irqreturn_t (*timer_routine)(int, void *, struct pt_regs *))
{

#ifdef CONFIG_XCOPILOT_BUGS
/*
* The only thing I know is that CLK32 is not available on Xcopilot
* I have little idea about what frequency SYSCLK has on Xcopilot.
* The values for prescaler and compare registers were simply
* taken from the original source
*/

/* Restart mode, Enable int, SYSCLK, Enable timer */
TCTL2 = TCTL_OM | TCTL_IRQEN | TCTL_CLKSOURCE_SYSCLK | TCTL_TEN;
/* Set prescaler */
TPRER2 = 2;
/* Set compare register */
TCMP2 = 0xd7e4;
#else
/* Restart mode, Enable int, 32KHz, Enable timer */
TCTL2 = TCTL_OM | TCTL_IRQEN | TCTL_CLKSOURCE_32KHZ | TCTL_TEN;
/* Set prescaler (Divide 32KHz by 32)*/
TPRER2 = 31;
/* Set compare register 32Khz / 32 / 10 = 100 */
TCMP2 = 10;
#endif

request_irq(TMR2_IRQ_NUM, timer_routine, IRQ_FLG_LOCK, "timer", NULL);
}

void BSP_tick(void)
{
/* Reset Timer2 */
TSTAT2 &= 0;
}
void m68328_timer_init(irqreturn_t (*timer_routine) (int, void *, struct pt_regs *));
void m68328_timer_tick(void);
unsigned long m68328_timer_gettimeoffset(void);
void m68328_timer_gettod(int *year, int *mon, int *day, int *hour, int *min, int *sec);

unsigned long BSP_gettimeoffset (void)
{
return 0;
}
/***************************************************************************/

void BSP_gettod (int *yearp, int *monp, int *dayp,
int *hourp, int *minp, int *secp)
{
}

int BSP_hwclk(int op, struct hwclk_time *t)
{
if (!op) {
/* read */
} else {
/* write */
}
return 0;
}

int BSP_set_clock_mmss (unsigned long nowtime)
{
#if 0
short real_seconds = nowtime % 60, real_minutes = (nowtime / 60) % 60;

tod->second1 = real_seconds / 10;
tod->second2 = real_seconds % 10;
tod->minute1 = real_minutes / 10;
tod->minute2 = real_minutes % 10;
#endif
return 0;
}

void BSP_reset (void)
void m68328_reset (void)
{
local_irq_disable();
asm volatile ("moveal #0x10c00000, %a0;\n\t"
Expand All @@ -108,18 +52,22 @@ void BSP_reset (void)
"jmp (%a0);");
}

/***************************************************************************/

void config_BSP(char *command, int len)
{
printk(KERN_INFO "\n68328 support D. Jeff Dionne <jeff@uclinux.org>\n");
printk(KERN_INFO "68328 support Kenneth Albanowski <kjahds@kjshds.com>\n");
printk(KERN_INFO "68328/Pilot support Bernhard Kuhn <kuhn@lpr.e-technik.tu-muenchen.de>\n");

mach_sched_init = BSP_sched_init;
mach_tick = BSP_tick;
mach_gettimeoffset = BSP_gettimeoffset;
mach_gettod = BSP_gettod;
mach_sched_init = m68328_timer_init;
mach_tick = m68328_timer_tick;
mach_gettimeoffset = m68328_timer_gettimeoffset;
mach_gettod = m68328_timer_gettod;
mach_hwclk = NULL;
mach_set_clock_mmss = NULL;
mach_reset = BSP_reset;
mach_reset = m68328_reset;
*command = '\0';
}

/***************************************************************************/

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