diff options
Diffstat (limited to 'arch/m68knommu/platform/68328/timers.c')
-rw-r--r-- | arch/m68knommu/platform/68328/timers.c | 134 |
1 files changed, 0 insertions, 134 deletions
diff --git a/arch/m68knommu/platform/68328/timers.c b/arch/m68knommu/platform/68328/timers.c deleted file mode 100644 index 309f725995bf..000000000000 --- a/arch/m68knommu/platform/68328/timers.c +++ /dev/null @@ -1,134 +0,0 @@ -/***************************************************************************/ - -/* - * linux/arch/m68knommu/platform/68328/timers.c - * - * Copyright (C) 1993 Hamish Macdonald - * Copyright (C) 1999 D. Jeff Dionne - * Copyright (C) 2001 Georges Menie, Ken Desmet - * - * This file is subject to the terms and conditions of the GNU General Public - * License. See the file COPYING in the main directory of this archive - * for more details. - */ - -/***************************************************************************/ - -#include <linux/types.h> -#include <linux/kernel.h> -#include <linux/mm.h> -#include <linux/interrupt.h> -#include <linux/irq.h> -#include <linux/clocksource.h> -#include <asm/setup.h> -#include <asm/system.h> -#include <asm/pgtable.h> -#include <asm/machdep.h> -#include <asm/MC68VZ328.h> - -/***************************************************************************/ - -#if defined(CONFIG_DRAGEN2) -/* with a 33.16 MHz clock, this will give usec resolution to the time functions */ -#define CLOCK_SOURCE TCTL_CLKSOURCE_SYSCLK -#define CLOCK_PRE 7 -#define TICKS_PER_JIFFY 41450 - -#elif defined(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 - */ -#define CLOCK_SOURCE TCTL_CLKSOURCE_SYSCLK -#define CLOCK_PRE 2 -#define TICKS_PER_JIFFY 0xd7e4 - -#else -/* default to using the 32Khz clock */ -#define CLOCK_SOURCE TCTL_CLKSOURCE_32KHZ -#define CLOCK_PRE 31 -#define TICKS_PER_JIFFY 10 -#endif - -static u32 m68328_tick_cnt; - -/***************************************************************************/ - -static irqreturn_t hw_tick(int irq, void *dummy) -{ - /* Reset Timer1 */ - TSTAT &= 0; - - m68328_tick_cnt += TICKS_PER_JIFFY; - return arch_timer_interrupt(irq, dummy); -} - -/***************************************************************************/ - -static struct irqaction m68328_timer_irq = { - .name = "timer", - .flags = IRQF_DISABLED | IRQF_TIMER, - .handler = hw_tick, -}; - -/***************************************************************************/ - -static cycle_t m68328_read_clk(struct clocksource *cs) -{ - unsigned long flags; - u32 cycles; - - local_irq_save(flags); - cycles = m68328_tick_cnt + TCN; - local_irq_restore(flags); - - return cycles; -} - -/***************************************************************************/ - -static struct clocksource m68328_clk = { - .name = "timer", - .rating = 250, - .read = m68328_read_clk, - .shift = 20, - .mask = CLOCKSOURCE_MASK(32), - .flags = CLOCK_SOURCE_IS_CONTINUOUS, -}; - -/***************************************************************************/ - -void hw_timer_init(void) -{ - /* disable timer 1 */ - TCTL = 0; - - /* set ISR */ - setup_irq(TMR_IRQ_NUM, &m68328_timer_irq); - - /* Restart mode, Enable int, Set clock source */ - TCTL = TCTL_OM | TCTL_IRQEN | CLOCK_SOURCE; - TPRER = CLOCK_PRE; - TCMP = TICKS_PER_JIFFY; - - /* Enable timer 1 */ - TCTL |= TCTL_TEN; - m68328_clk.mult = clocksource_hz2mult(TICKS_PER_JIFFY*HZ, m68328_clk.shift); - clocksource_register(&m68328_clk); -} - -/***************************************************************************/ - -void m68328_timer_gettod(int *year, int *mon, int *day, int *hour, int *min, int *sec) -{ - long now = RTCTIME; - - *year = *mon = *day = 1; - *hour = (now >> 24) % 24; - *min = (now >> 16) % 60; - *sec = now % 60; -} - -/***************************************************************************/ |