diff options
Diffstat (limited to 'arch/mips')
| -rw-r--r-- | arch/mips/jazz/irq.c | 48 | ||||
| -rw-r--r-- | arch/mips/jazz/setup.c | 7 |
2 files changed, 48 insertions, 7 deletions
diff --git a/arch/mips/jazz/irq.c b/arch/mips/jazz/irq.c index 56235412cbb..835b056cea3 100644 --- a/arch/mips/jazz/irq.c +++ b/arch/mips/jazz/irq.c @@ -6,6 +6,7 @@ * Copyright (C) 1992 Linus Torvalds * Copyright (C) 1994 - 2001, 2003 Ralf Baechle */ +#include <linux/clockchips.h> #include <linux/init.h> #include <linux/interrupt.h> #include <linux/kernel.h> @@ -105,3 +106,50 @@ asmlinkage void plat_irq_dispatch(void) panic("Unimplemented loc_no_irq handler"); } } + +static void r4030_set_mode(enum clock_event_mode mode, + struct clock_event_device *evt) +{ + /* Nothing to do ... */ +} + +struct clock_event_device r4030_clockevent = { + .name = "r4030", + .features = CLOCK_EVT_FEAT_PERIODIC, + .rating = 100, + .irq = JAZZ_TIMER_IRQ, + .cpumask = CPU_MASK_CPU0, + .set_mode = r4030_set_mode, +}; + +static irqreturn_t r4030_timer_interrupt(int irq, void *dev_id) +{ + r4030_clockevent.event_handler(&r4030_clockevent); + + return IRQ_HANDLED; +} + +static struct irqaction r4030_timer_irqaction = { + .handler = r4030_timer_interrupt, + .flags = IRQF_DISABLED, + .mask = CPU_MASK_CPU0, + .name = "timer", +}; + +void __init plat_timer_setup(struct irqaction *ignored) +{ + struct irqaction *irq = &r4030_timer_irqaction; + + BUG_ON(HZ != 100); + + /* + * Set clock to 100Hz. + * + * The R4030 timer receives an input clock of 1kHz which is divieded by + * a programmable 4-bit divider. This makes it fairly inflexible. + */ + r4030_write_reg32(JAZZ_TIMER_INTERVAL, 9); + setup_irq(JAZZ_TIMER_IRQ, irq); + + clockevents_register_device(&r4030_clockevent); +} diff --git a/arch/mips/jazz/setup.c b/arch/mips/jazz/setup.c index 5c6271ab927..fa890df3658 100644 --- a/arch/mips/jazz/setup.c +++ b/arch/mips/jazz/setup.c @@ -39,13 +39,6 @@ extern asmlinkage void jazz_handle_int(void); extern void jazz_machine_restart(char *command); -void __init plat_timer_setup(struct irqaction *irq) -{ - /* set the clock to 100 Hz */ - r4030_write_reg32(JAZZ_TIMER_INTERVAL, 9); - setup_irq(JAZZ_TIMER_IRQ, irq); -} - static struct resource jazz_io_resources[] = { { .start = 0x00, |