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[ARM] 3823/1: iop3xx: switch iop32x/iop33x over to shared time code

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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 <buytenh@wantstofly.org>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
This commit is contained in:
Lennert Buytenhek 2006-09-18 23:19:02 +01:00 committed by Russell King
parent 48388b2a56
commit 863753a81e
10 changed files with 26 additions and 265 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

2
arch/arm/mach-iop32x/Makefile
View File

@ -2,7 +2,7 @@
# Makefile for the linux kernel.
#
obj-y := common.o setup.o irq.o time.o
obj-y := common.o setup.o irq.o
obj-m :=
obj-n :=
obj- :=

15
arch/arm/mach-iop32x/setup.c
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@ -29,6 +29,7 @@
#include <asm/hardware.h>
#include <asm/mach-types.h>
#include <asm/mach/arch.h>
#include <asm/mach/time.h>
#include <asm/hardware/iop3xx.h>
#define IOP321_UART_XTAL 1843200
@ -67,16 +68,22 @@ void __init iop32x_init(void)
#ifdef CONFIG_ARCH_IQ80321
extern void iq80321_map_io(void);
extern struct sys_timer iop321_timer;
extern void iop321_init_time(void);
#endif
#ifdef CONFIG_ARCH_IQ31244
extern void iq31244_map_io(void);
extern struct sys_timer iop321_timer;
extern void iop321_init_time(void);
#endif
static void __init iop3xx_timer_init(void)
{
iop3xx_init_time(IOP321_TICK_RATE);
}
struct sys_timer iop321_timer = {
.init = iop3xx_timer_init,
.offset = iop3xx_gettimeoffset,
};
#if defined(CONFIG_ARCH_IQ80321)
MACHINE_START(IQ80321, "Intel IQ80321")
/* Maintainer: Intel Corporation */

108
arch/arm/mach-iop32x/time.c
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@ -1,108 +0,0 @@
/*
* arch/arm/mach-iop32x/time.c
*
* Timer code for IOP321 based systems
*
* Author: Deepak Saxena <dsaxena@mvista.com>
*
* Copyright 2002-2003 MontaVista Software Inc.
*
* 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 <linux/kernel.h>
#include <linux/interrupt.h>
#include <linux/time.h>
#include <linux/init.h>
#include <linux/timex.h>
#include <asm/hardware.h>
#include <asm/io.h>
#include <asm/irq.h>
#include <asm/uaccess.h>
#include <asm/mach/irq.h>
#include <asm/mach/time.h>
#define IOP321_TIME_SYNC 0
static inline unsigned long get_elapsed(void)
{
return LATCH - *IOP321_TU_TCR0;
}
static unsigned long iop321_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
iop321_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 iop321_timer_irq = {
.name = "IOP321 Timer Tick",
.handler = iop321_timer_interrupt,
.flags = IRQF_DISABLED | IRQF_TIMER,
};
static void __init iop321_timer_init(void)
{
u32 timer_ctl;
setup_irq(IRQ_IOP321_TIMER0, &iop321_timer_irq);
timer_ctl = IOP321_TMR_EN | IOP321_TMR_PRIVILEGED | IOP321_TMR_RELOAD |
IOP321_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 iop321_timer = {
.init = &iop321_timer_init,
.offset = iop321_gettimeoffset,
};

2
arch/arm/mach-iop33x/Makefile
View File

@ -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- :=

12
arch/arm/mach-iop33x/setup.c
View File

@ -28,6 +28,7 @@
#include <asm/hardware.h>
#include <asm/mach-types.h>
#include <asm/mach/arch.h>
#include <asm/mach/time.h>
#include <asm/hardware/iop3xx.h>
#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. */

106
arch/arm/mach-iop33x/time.c
View File

@ -1,106 +0,0 @@
/*
* arch/arm/mach-iop33x/time.c
*
* Timer code for IOP331 based systems
*
* Author: Dave Jiang <dave.jiang@intel.com>
*
* 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 <linux/kernel.h>
#include <linux/interrupt.h>
#include <linux/time.h>
#include <linux/init.h>
#include <linux/timex.h>
#include <asm/hardware.h>
#include <asm/io.h>
#include <asm/irq.h>
#include <asm/uaccess.h>
#include <asm/mach/irq.h>
#include <asm/mach/time.h>
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,
};

21
include/asm-arm/arch-iop32x/iop321.h
View File

@ -151,10 +151,6 @@
#define IOP321_FINTSRC (volatile u32 *)IOP321_REG_ADDR(0x000007DC)
/* Timers */
#define IOP321_TU_TMR0 (volatile u32 *)IOP321_REG_ADDR(0x000007E0)
#define IOP321_TU_TMR1 (volatile u32 *)IOP321_REG_ADDR(0x000007E4)
#ifdef CONFIG_ARCH_IQ80321
#define IOP321_TICK_RATE 200000000 /* 200 MHz clock */
#elif defined(CONFIG_ARCH_IQ31244)
@ -166,23 +162,6 @@
#define IOP321_TICK_RATE 200000000 /* 33.333333 Mhz crystal */
#endif
#define IOP321_TMR_TC 0x01
#define IOP321_TMR_EN 0x02
#define IOP321_TMR_RELOAD 0x04
#define IOP321_TMR_PRIVILEGED 0x09
#define IOP321_TMR_RATIO_1_1 0x00
#define IOP321_TMR_RATIO_4_1 0x10
#define IOP321_TMR_RATIO_8_1 0x20
#define IOP321_TMR_RATIO_16_1 0x30
#define IOP321_TU_TCR0 (volatile u32 *)IOP321_REG_ADDR(0x000007E8)
#define IOP321_TU_TCR1 (volatile u32 *)IOP321_REG_ADDR(0x000007EC)
#define IOP321_TU_TRR0 (volatile u32 *)IOP321_REG_ADDR(0x000007F0)
#define IOP321_TU_TRR1 (volatile u32 *)IOP321_REG_ADDR(0x000007F4)
#define IOP321_TU_TISR (volatile u32 *)IOP321_REG_ADDR(0x000007F8)
#define IOP321_TU_WDTCR (volatile u32 *)IOP321_REG_ADDR(0x000007FC)
/* Application accelerator unit 0x00000800 - 0x000008FF */
#define IOP321_AAU_ACR (volatile u32 *)IOP321_REG_ADDR(0x00000800)
#define IOP321_AAU_ASR (volatile u32 *)IOP321_REG_ADDR(0x00000804)

2
include/asm-arm/arch-iop32x/timex.h
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@ -5,4 +5,4 @@
*/
#include <asm/hardware.h>
#define CLOCK_TICK_RATE IOP321_TICK_RATE
#define CLOCK_TICK_RATE (100 * HZ)

21
include/asm-arm/arch-iop33x/iop331.h
View File

@ -137,27 +137,6 @@
/* Timers */
#define IOP331_TU_TMR0 (volatile u32 *)IOP331_REG_ADDR(0x000007D0)
#define IOP331_TU_TMR1 (volatile u32 *)IOP331_REG_ADDR(0x000007D4)
#define IOP331_TMR_TC 0x01
#define IOP331_TMR_EN 0x02
#define IOP331_TMR_RELOAD 0x04
#define IOP331_TMR_PRIVILEGED 0x09
#define IOP331_TMR_RATIO_1_1 0x00
#define IOP331_TMR_RATIO_4_1 0x10
#define IOP331_TMR_RATIO_8_1 0x20
#define IOP331_TMR_RATIO_16_1 0x30
#define IOP331_TU_TCR0 (volatile u32 *)IOP331_REG_ADDR(0x000007D8)
#define IOP331_TU_TCR1 (volatile u32 *)IOP331_REG_ADDR(0x000007DC)
#define IOP331_TU_TRR0 (volatile u32 *)IOP331_REG_ADDR(0x000007E0)
#define IOP331_TU_TRR1 (volatile u32 *)IOP331_REG_ADDR(0x000007E4)
#define IOP331_TU_TISR (volatile u32 *)IOP331_REG_ADDR(0x000007E8)
#define IOP331_TU_WDTCR (volatile u32 *)IOP331_REG_ADDR(0x000007EC)
#if defined(CONFIG_ARCH_IOP33X)
#define IOP331_TICK_RATE 266000000 /* 266 MHz IB clock */
#endif

2
include/asm-arm/arch-iop33x/timex.h
View File

@ -5,4 +5,4 @@
*/
#include <asm/hardware.h>
#define CLOCK_TICK_RATE IOP331_TICK_RATE
#define CLOCK_TICK_RATE (100 * HZ)