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Diffstat (limited to 'arch/mips/pnx8550/common/time.c')
-rw-r--r--arch/mips/pnx8550/common/time.c151
1 files changed, 0 insertions, 151 deletions
diff --git a/arch/mips/pnx8550/common/time.c b/arch/mips/pnx8550/common/time.c
deleted file mode 100644
index 831d6b369e9c..000000000000
--- a/arch/mips/pnx8550/common/time.c
+++ /dev/null
@@ -1,151 +0,0 @@
-/*
- * Copyright 2001, 2002, 2003 MontaVista Software Inc.
- * Author: Jun Sun, jsun@mvista.com or jsun@junsun.net
- * Copyright (C) 2007 Ralf Baechle (ralf@linux-mips.org)
- *
- * Common time service routines for MIPS machines. See
- * Documents/MIPS/README.txt.
- *
- * This program is free software; you can redistribute it and/or modify it
- * under the terms of the GNU General Public License as published by the
- * Free Software Foundation; either version 2 of the License, or (at your
- * option) any later version.
- */
-#include <linux/types.h>
-#include <linux/kernel.h>
-#include <linux/init.h>
-#include <linux/sched.h>
-#include <linux/param.h>
-#include <linux/time.h>
-#include <linux/timer.h>
-#include <linux/smp.h>
-#include <linux/kernel_stat.h>
-#include <linux/spinlock.h>
-#include <linux/interrupt.h>
-
-#include <asm/bootinfo.h>
-#include <asm/cpu.h>
-#include <asm/time.h>
-#include <asm/hardirq.h>
-#include <asm/div64.h>
-#include <asm/debug.h>
-
-#include <int.h>
-#include <cm.h>
-
-static unsigned long cpj;
-
-static cycle_t hpt_read(struct clocksource *cs)
-{
- return read_c0_count2();
-}
-
-static struct clocksource pnx_clocksource = {
- .name = "pnx8xxx",
- .rating = 200,
- .read = hpt_read,
- .flags = CLOCK_SOURCE_IS_CONTINUOUS,
-};
-
-static irqreturn_t pnx8xxx_timer_interrupt(int irq, void *dev_id)
-{
- struct clock_event_device *c = dev_id;
-
- /* clear MATCH, signal the event */
- c->event_handler(c);
-
- return IRQ_HANDLED;
-}
-
-static struct irqaction pnx8xxx_timer_irq = {
- .handler = pnx8xxx_timer_interrupt,
- .flags = IRQF_PERCPU | IRQF_TIMER,
- .name = "pnx8xxx_timer",
-};
-
-static irqreturn_t monotonic_interrupt(int irq, void *dev_id)
-{
- /* Timer 2 clear interrupt */
- write_c0_compare2(-1);
- return IRQ_HANDLED;
-}
-
-static struct irqaction monotonic_irqaction = {
- .handler = monotonic_interrupt,
- .flags = IRQF_TIMER,
- .name = "Monotonic timer",
-};
-
-static int pnx8xxx_set_next_event(unsigned long delta,
- struct clock_event_device *evt)
-{
- write_c0_compare(delta);
- return 0;
-}
-
-static struct clock_event_device pnx8xxx_clockevent = {
- .name = "pnx8xxx_clockevent",
- .features = CLOCK_EVT_FEAT_ONESHOT,
- .set_next_event = pnx8xxx_set_next_event,
-};
-
-static inline void timer_ack(void)
-{
- write_c0_compare(cpj);
-}
-
-__init void plat_time_init(void)
-{
- unsigned int configPR;
- unsigned int n;
- unsigned int m;
- unsigned int p;
- unsigned int pow2p;
-
- pnx8xxx_clockevent.cpumask = cpu_none_mask;
- clockevents_register_device(&pnx8xxx_clockevent);
- clocksource_register(&pnx_clocksource);
-
- /* Timer 1 start */
- configPR = read_c0_config7();
- configPR &= ~0x00000008;
- write_c0_config7(configPR);
-
- /* Timer 2 start */
- configPR = read_c0_config7();
- configPR &= ~0x00000010;
- write_c0_config7(configPR);
-
- /* Timer 3 stop */
- configPR = read_c0_config7();
- configPR |= 0x00000020;
- write_c0_config7(configPR);
-
-
- /* PLL0 sets MIPS clock (PLL1 <=> TM1, PLL6 <=> TM2, PLL5 <=> mem) */
- /* (but only if CLK_MIPS_CTL select value [bits 3:1] is 1: FIXME) */
-
- n = (PNX8550_CM_PLL0_CTL & PNX8550_CM_PLL_N_MASK) >> 16;
- m = (PNX8550_CM_PLL0_CTL & PNX8550_CM_PLL_M_MASK) >> 8;
- p = (PNX8550_CM_PLL0_CTL & PNX8550_CM_PLL_P_MASK) >> 2;
- pow2p = (1 << p);
-
- db_assert(m != 0 && pow2p != 0);
-
- /*
- * Compute the frequency as in the PNX8550 User Manual 1.0, p.186
- * (a.k.a. 8-10). Divide by HZ for a timer offset that results in
- * HZ timer interrupts per second.
- */
- mips_hpt_frequency = 27UL * ((1000000UL * n)/(m * pow2p));
- cpj = DIV_ROUND_CLOSEST(mips_hpt_frequency, HZ);
- write_c0_count(0);
- timer_ack();
-
- /* Setup Timer 2 */
- write_c0_count2(0);
- write_c0_compare2(0xffffffff);
-
- setup_irq(PNX8550_INT_TIMER1, &pnx8xxx_timer_irq);
- setup_irq(PNX8550_INT_TIMER2, &monotonic_irqaction);
-}