[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 <buytenh@wantstofly.org>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>

arch/arm/mach-iop32x/Makefile

@@ -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-			:=

arch/arm/mach-iop32x/setup.c

@@ -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 */

arch/arm/mach-iop32x/time.c

@@ -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,
-};

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-			:=

arch/arm/mach-iop33x/setup.c

@@ -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. */

arch/arm/mach-iop33x/time.c

@@ -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,
-};

include/asm-arm/arch-iop32x/iop321.h

@@ -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)

include/asm-arm/arch-iop32x/timex.h

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

include/asm-arm/arch-iop33x/iop331.h

@@ -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

include/asm-arm/arch-iop33x/timex.h

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