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author | Linus Torvalds <torvalds@ppc970.osdl.org> | 2005-04-16 15:20:36 -0700 |
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committer | Linus Torvalds <torvalds@ppc970.osdl.org> | 2005-04-16 15:20:36 -0700 |
commit | 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 (patch) | |
tree | 0bba044c4ce775e45a88a51686b5d9f90697ea9d /arch/arm/mach-h720x/cpu-h7201.c | |
download | linux-1da177e4c3f41524e886b7f1b8a0c1fc7321cac2.tar.bz2 |
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.c | 64 |
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 @@ +/* + * linux/arch/arm/mach-h720x/cpu-h7201.c + * + * Copyright (C) 2003 Thomas Gleixner <tglx@linutronix.de> + * 2003 Robert Schwebel <r.schwebel@pengutronix.de> + * 2004 Sascha Hauer <s.hauer@pengutronix.de> + * + * processor specific stuff for the Hynix h7201 + * + * This program is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License version 2 as + * published by the Free Software Foundation. + * + */ + +#include <linux/init.h> +#include <linux/interrupt.h> +#include <linux/module.h> +#include <asm/types.h> +#include <asm/hardware.h> +#include <asm/irq.h> +#include <asm/arch/irqs.h> +#include <asm/mach/irq.h> +#include <asm/mach/time.h> +#include "common.h" +/* + * Timer interrupt handler + */ +static irqreturn_t +h7201_timer_interrupt(int irq, void *dev_id, struct pt_regs *regs) +{ + write_seqlock(&xtime_lock); + + CPU_REG (TIMER_VIRT, TIMER_TOPSTAT); + timer_tick(regs); + + write_sequnlock(&xtime_lock); + + return IRQ_HANDLED; +} + +static struct irqaction h7201_timer_irq = { + .name = "h7201 Timer Tick", + .flags = SA_INTERRUPT, + .handler = h7201_timer_interrupt +}; + +/* + * Setup TIMER0 as system timer + */ +void __init h7201_init_time(void) +{ + CPU_REG (TIMER_VIRT, TM0_PERIOD) = LATCH; + CPU_REG (TIMER_VIRT, TM0_CTRL) = TM_RESET; + CPU_REG (TIMER_VIRT, TM0_CTRL) = TM_REPEAT | TM_START; + CPU_REG (TIMER_VIRT, TIMER_TOPCTRL) = ENABLE_TM0_INTR | TIMER_ENABLE_BIT; + + setup_irq(IRQ_TIMER0, &h7201_timer_irq); +} + +struct sys_timer h7201_timer = { + .init = h7201_init_time, + .offset = h720x_gettimeoffset, +}; |