aboutsummaryrefslogtreecommitdiffstats
path: root/arch/arm/mach-h720x/cpu-h7201.c
diff options
context:
space:
mode:
authorLinus Torvalds <torvalds@ppc970.osdl.org>2005-04-16 18:20:36 -0400
committerLinus Torvalds <torvalds@ppc970.osdl.org>2005-04-16 18:20:36 -0400
commit1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 (patch)
tree0bba044c4ce775e45a88a51686b5d9f90697ea9d /arch/arm/mach-h720x/cpu-h7201.c
Linux-2.6.12-rc2v2.6.12-rc2
Initial git repository build. I'm not bothering with the full history, even though we have it. We can create a separate "historical" git archive of that later if we want to, and in the meantime it's about 3.2GB when imported into git - space that would just make the early git days unnecessarily complicated, when we don't have a lot of good infrastructure for it. Let it rip!
Diffstat (limited to 'arch/arm/mach-h720x/cpu-h7201.c')
-rw-r--r--arch/arm/mach-h720x/cpu-h7201.c64
1 files changed, 64 insertions, 0 deletions
diff --git a/arch/arm/mach-h720x/cpu-h7201.c b/arch/arm/mach-h720x/cpu-h7201.c
new file mode 100644
index 000000000000..743656881ed6
--- /dev/null
+++ b/arch/arm/mach-h720x/cpu-h7201.c
@@ -0,0 +1,64 @@
1/*
2 * linux/arch/arm/mach-h720x/cpu-h7201.c
3 *
4 * Copyright (C) 2003 Thomas Gleixner <tglx@linutronix.de>
5 * 2003 Robert Schwebel <r.schwebel@pengutronix.de>
6 * 2004 Sascha Hauer <s.hauer@pengutronix.de>
7 *
8 * processor specific stuff for the Hynix h7201
9 *
10 * This program is free software; you can redistribute it and/or modify
11 * it under the terms of the GNU General Public License version 2 as
12 * published by the Free Software Foundation.
13 *
14 */
15
16#include <linux/init.h>
17#include <linux/interrupt.h>
18#include <linux/module.h>
19#include <asm/types.h>
20#include <asm/hardware.h>
21#include <asm/irq.h>
22#include <asm/arch/irqs.h>
23#include <asm/mach/irq.h>
24#include <asm/mach/time.h>
25#include "common.h"
26/*
27 * Timer interrupt handler
28 */
29static irqreturn_t
30h7201_timer_interrupt(int irq, void *dev_id, struct pt_regs *regs)
31{
32 write_seqlock(&xtime_lock);
33
34 CPU_REG (TIMER_VIRT, TIMER_TOPSTAT);
35 timer_tick(regs);
36
37 write_sequnlock(&xtime_lock);
38
39 return IRQ_HANDLED;
40}
41
42static struct irqaction h7201_timer_irq = {
43 .name = "h7201 Timer Tick",
44 .flags = SA_INTERRUPT,
45 .handler = h7201_timer_interrupt
46};
47
48/*
49 * Setup TIMER0 as system timer
50 */
51void __init h7201_init_time(void)
52{
53 CPU_REG (TIMER_VIRT, TM0_PERIOD) = LATCH;
54 CPU_REG (TIMER_VIRT, TM0_CTRL) = TM_RESET;
55 CPU_REG (TIMER_VIRT, TM0_CTRL) = TM_REPEAT | TM_START;
56 CPU_REG (TIMER_VIRT, TIMER_TOPCTRL) = ENABLE_TM0_INTR | TIMER_ENABLE_BIT;
57
58 setup_irq(IRQ_TIMER0, &h7201_timer_irq);
59}
60
61struct sys_timer h7201_timer = {
62 .init = h7201_init_time,
63 .offset = h720x_gettimeoffset,
64};