[MIPS] Jazz clockevent driver
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
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@ -6,6 +6,7 @@
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* Copyright (C) 1992 Linus Torvalds
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* Copyright (C) 1992 Linus Torvalds
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* Copyright (C) 1994 - 2001, 2003 Ralf Baechle
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* Copyright (C) 1994 - 2001, 2003 Ralf Baechle
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*/
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*/
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#include <linux/clockchips.h>
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#include <linux/init.h>
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#include <linux/init.h>
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#include <linux/interrupt.h>
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#include <linux/interrupt.h>
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#include <linux/kernel.h>
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#include <linux/kernel.h>
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@ -105,3 +106,50 @@ asmlinkage void plat_irq_dispatch(void)
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panic("Unimplemented loc_no_irq handler");
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panic("Unimplemented loc_no_irq handler");
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}
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}
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}
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}
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static void r4030_set_mode(enum clock_event_mode mode,
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struct clock_event_device *evt)
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{
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/* Nothing to do ... */
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}
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struct clock_event_device r4030_clockevent = {
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.name = "r4030",
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.features = CLOCK_EVT_FEAT_PERIODIC,
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.rating = 100,
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.irq = JAZZ_TIMER_IRQ,
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.cpumask = CPU_MASK_CPU0,
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.set_mode = r4030_set_mode,
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};
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static irqreturn_t r4030_timer_interrupt(int irq, void *dev_id)
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{
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r4030_clockevent.event_handler(&r4030_clockevent);
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return IRQ_HANDLED;
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}
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static struct irqaction r4030_timer_irqaction = {
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.handler = r4030_timer_interrupt,
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.flags = IRQF_DISABLED,
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.mask = CPU_MASK_CPU0,
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.name = "timer",
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};
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void __init plat_timer_setup(struct irqaction *ignored)
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{
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struct irqaction *irq = &r4030_timer_irqaction;
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BUG_ON(HZ != 100);
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/*
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* Set clock to 100Hz.
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*
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* The R4030 timer receives an input clock of 1kHz which is divieded by
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* a programmable 4-bit divider. This makes it fairly inflexible.
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*/
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r4030_write_reg32(JAZZ_TIMER_INTERVAL, 9);
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setup_irq(JAZZ_TIMER_IRQ, irq);
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clockevents_register_device(&r4030_clockevent);
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}
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@ -39,13 +39,6 @@ extern asmlinkage void jazz_handle_int(void);
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extern void jazz_machine_restart(char *command);
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extern void jazz_machine_restart(char *command);
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void __init plat_timer_setup(struct irqaction *irq)
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{
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/* set the clock to 100 Hz */
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r4030_write_reg32(JAZZ_TIMER_INTERVAL, 9);
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setup_irq(JAZZ_TIMER_IRQ, irq);
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}
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static struct resource jazz_io_resources[] = {
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static struct resource jazz_io_resources[] = {
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{
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{
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.start = 0x00,
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.start = 0x00,
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