projects / deliverable / linux.git / blame
| Commit | Line | Data |
|---|---|---|
| 1da177e4 LT |
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> | |
| a09e64fb | 20 | #include <mach/hardware.h> |
| 1da177e4 | 21 | #include <asm/irq.h> |
| a09e64fb | 22 | #include <mach/irqs.h> |
| 1da177e4 LT |
23 | #include <asm/mach/irq.h> |
| 24 | #include <asm/mach/time.h> | |
| 25 | #include "common.h" | |
| 26 | /* | |
| 27 | * Timer interrupt handler | |
| 28 | */ | |
| 29 | static irqreturn_t | |
| 0cd61b68 | 30 | h7201_timer_interrupt(int irq, void *dev_id) |
| 1da177e4 | 31 | { |
| 1da177e4 | 32 | CPU_REG (TIMER_VIRT, TIMER_TOPSTAT); |
| 0cd61b68 | 33 | timer_tick(); |
| 1da177e4 | 34 | |
| 1da177e4 LT |
35 | return IRQ_HANDLED; |
| 36 | } | |
| 37 | ||
| 38 | static struct irqaction h7201_timer_irq = { | |
| 39 | .name = "h7201 Timer Tick", | |
| b30fabad | 40 | .flags = IRQF_DISABLED | IRQF_TIMER | IRQF_IRQPOLL, |
| 09b8b5f8 | 41 | .handler = h7201_timer_interrupt, |
| 1da177e4 LT |
42 | }; |
| 43 | ||
| 44 | /* | |
| 45 | * Setup TIMER0 as system timer | |
| 46 | */ | |
| 47 | void __init h7201_init_time(void) | |
| 48 | { | |
| 49 | CPU_REG (TIMER_VIRT, TM0_PERIOD) = LATCH; | |
| 50 | CPU_REG (TIMER_VIRT, TM0_CTRL) = TM_RESET; | |
| 51 | CPU_REG (TIMER_VIRT, TM0_CTRL) = TM_REPEAT | TM_START; | |
| 52 | CPU_REG (TIMER_VIRT, TIMER_TOPCTRL) = ENABLE_TM0_INTR | TIMER_ENABLE_BIT; | |
| 53 | ||
| 54 | setup_irq(IRQ_TIMER0, &h7201_timer_irq); | |
| 55 | } | |
| 56 | ||
| 57 | struct sys_timer h7201_timer = { | |
| 58 | .init = h7201_init_time, | |
| 59 | .offset = h720x_gettimeoffset, | |
| 60 | }; |