[MIPS] Jazz clockevent driver (584d98be) · Commits · e / devices / android_kernel_teracube_2e

arch/mips/jazz/irq.c

+48 −0

Original line number	Diff line number	Diff line
		@@ -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);
		}

+0 −7

Original line number	Diff line number	Diff line
		@@ -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,