From 863753a81e4f863015be34900dc2ba3637622f34 Mon Sep 17 00:00:00 2001 From: Lennert Buytenhek Date: Mon, 18 Sep 2006 23:19:02 +0100 Subject: [ARM] 3823/1: iop3xx: switch iop32x/iop33x over to shared time code Switch the iop32x and iop33x code over to the common time implementation, and remove the (nearly identical) iop32x and iop33x time implementations. Signed-off-by: Lennert Buytenhek Signed-off-by: Russell King --- arch/arm/mach-iop33x/Makefile | 2 +- arch/arm/mach-iop33x/setup.c | 12 ++++- arch/arm/mach-iop33x/time.c | 106 ------------------------------------------ 3 files changed, 12 insertions(+), 108 deletions(-) delete mode 100644 arch/arm/mach-iop33x/time.c (limited to 'arch/arm/mach-iop33x') diff --git a/arch/arm/mach-iop33x/Makefile b/arch/arm/mach-iop33x/Makefile index 6c74f13b113..f825cee57d9 100644 --- a/arch/arm/mach-iop33x/Makefile +++ b/arch/arm/mach-iop33x/Makefile @@ -2,7 +2,7 @@ # Makefile for the linux kernel. # -obj-y := setup.o irq.o time.o +obj-y := setup.o irq.o obj-m := obj-n := obj- := diff --git a/arch/arm/mach-iop33x/setup.c b/arch/arm/mach-iop33x/setup.c index ad737d6582b..7cf5015436f 100644 --- a/arch/arm/mach-iop33x/setup.c +++ b/arch/arm/mach-iop33x/setup.c @@ -28,6 +28,7 @@ #include #include #include +#include #include #define IOP331_UART_XTAL 33334000 @@ -118,9 +119,18 @@ void __init iop33x_init(void) #ifdef CONFIG_ARCH_IOP33X extern void iop331_init_irq(void); -extern struct sys_timer iop331_timer; #endif +static void __init iop3xx_timer_init(void) +{ + iop3xx_init_time(IOP331_TICK_RATE); +} + +struct sys_timer iop331_timer = { + .init = iop3xx_timer_init, + .offset = iop3xx_gettimeoffset, +}; + #if defined(CONFIG_ARCH_IQ80331) MACHINE_START(IQ80331, "Intel IQ80331") /* Maintainer: Intel Corp. */ diff --git a/arch/arm/mach-iop33x/time.c b/arch/arm/mach-iop33x/time.c deleted file mode 100644 index d839cd0d926..00000000000 --- a/arch/arm/mach-iop33x/time.c +++ /dev/null @@ -1,106 +0,0 @@ -/* - * arch/arm/mach-iop33x/time.c - * - * Timer code for IOP331 based systems - * - * Author: Dave Jiang - * - * Copyright 2003 Intel Corp. - * - * 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 -#include -#include -#include -#include - -#include -#include -#include -#include -#include -#include - -static inline unsigned long get_elapsed(void) -{ - return LATCH - *IOP331_TU_TCR0; -} - -static unsigned long iop331_gettimeoffset(void) -{ - unsigned long elapsed, usec; - u32 tisr1, tisr2; - - /* - * If an interrupt was pending before we read the timer, - * we've already wrapped. Factor this into the time. - * If an interrupt was pending after we read the timer, - * it may have wrapped between checking the interrupt - * status and reading the timer. Re-read the timer to - * be sure its value is after the wrap. - */ - - asm volatile("mrc p6, 0, %0, c6, c1, 0" : "=r" (tisr1)); - elapsed = get_elapsed(); - asm volatile("mrc p6, 0, %0, c6, c1, 0" : "=r" (tisr2)); - - if(tisr1 & 1) - elapsed += LATCH; - else if (tisr2 & 1) - elapsed = LATCH + get_elapsed(); - - /* - * Now convert them to usec. - */ - usec = (unsigned long)(elapsed / (CLOCK_TICK_RATE/1000000)); - - return usec; -} - -static irqreturn_t -iop331_timer_interrupt(int irq, void *dev_id, struct pt_regs *regs) -{ - u32 tisr; - - write_seqlock(&xtime_lock); - - asm volatile("mrc p6, 0, %0, c6, c1, 0" : "=r" (tisr)); - tisr |= 1; - asm volatile("mcr p6, 0, %0, c6, c1, 0" : : "r" (tisr)); - - timer_tick(regs); - - write_sequnlock(&xtime_lock); - return IRQ_HANDLED; -} - -static struct irqaction iop331_timer_irq = { - .name = "IOP331 Timer Tick", - .handler = iop331_timer_interrupt, - .flags = IRQF_DISABLED | IRQF_TIMER, -}; - -static void __init iop331_timer_init(void) -{ - u32 timer_ctl; - - setup_irq(IRQ_IOP331_TIMER0, &iop331_timer_irq); - - timer_ctl = IOP331_TMR_EN | IOP331_TMR_PRIVILEGED | IOP331_TMR_RELOAD | - IOP331_TMR_RATIO_1_1; - - asm volatile("mcr p6, 0, %0, c4, c1, 0" : : "r" (LATCH)); - - asm volatile("mcr p6, 0, %0, c0, c1, 0" : : "r" (timer_ctl)); - -} - -struct sys_timer iop331_timer = { - .init = iop331_timer_init, - .offset = iop331_gettimeoffset, -}; -- cgit v1.2.3