Remove obsolete #include <linux/config.h>
[linux-2.6.git] / arch / arm / mach-lh7a40x / time.c
1 /*
2  *  arch/arm/mach-lh7a40x/time.c
3  *
4  *  Copyright (C) 2004 Logic Product Development
5  *
6  *  This program is free software; you can redistribute it and/or
7  *  modify it under the terms of the GNU General Public License
8  *  version 2 as published by the Free Software Foundation.
9  *
10  */
11 #include <linux/module.h>
12 #include <linux/kernel.h>
13 #include <linux/interrupt.h>
14 #include <linux/time.h>
15
16 #include <asm/hardware.h>
17 #include <asm/io.h>
18 #include <asm/irq.h>
19 #include <asm/leds.h>
20
21 #include <asm/mach/time.h>
22 #include "common.h"
23
24 #if HZ < 100
25 # define TIMER_CONTROL  TIMER_CONTROL2
26 # define TIMER_LOAD     TIMER_LOAD2
27 # define TIMER_CONSTANT (508469/HZ)
28 # define TIMER_MODE     (TIMER_C_ENABLE | TIMER_C_PERIODIC | TIMER_C_508KHZ)
29 # define TIMER_EOI      TIMER_EOI2
30 # define TIMER_IRQ      IRQ_T2UI
31 #else
32 # define TIMER_CONTROL  TIMER_CONTROL3
33 # define TIMER_LOAD     TIMER_LOAD3
34 # define TIMER_CONSTANT (3686400/HZ)
35 # define TIMER_MODE     (TIMER_C_ENABLE | TIMER_C_PERIODIC)
36 # define TIMER_EOI      TIMER_EOI3
37 # define TIMER_IRQ      IRQ_T3UI
38 #endif
39
40 static irqreturn_t
41 lh7a40x_timer_interrupt(int irq, void *dev_id, struct pt_regs *regs)
42 {
43         write_seqlock(&xtime_lock);
44
45         TIMER_EOI = 0;
46         timer_tick(regs);
47
48         write_sequnlock(&xtime_lock);
49
50         return IRQ_HANDLED;
51 }
52
53 static struct irqaction lh7a40x_timer_irq = {
54         .name           = "LHA740x Timer Tick",
55         .flags          = SA_INTERRUPT | SA_TIMER,
56         .handler        = lh7a40x_timer_interrupt,
57 };
58
59 static void __init lh7a40x_timer_init (void)
60 {
61                                 /* Stop/disable all timers */
62         TIMER_CONTROL1 = 0;
63         TIMER_CONTROL2 = 0;
64         TIMER_CONTROL3 = 0;
65
66         setup_irq (TIMER_IRQ, &lh7a40x_timer_irq);
67
68         TIMER_LOAD = TIMER_CONSTANT;
69         TIMER_CONTROL = TIMER_MODE;
70 }
71
72 struct sys_timer lh7a40x_timer = {
73         .init           = &lh7a40x_timer_init,
74 };