arm: timer and interrupt init rework

actually the timer init use the interrupt_init as init callback
which make the interrupt and timer implementation difficult to follow

so now rename it as int timer_init(void) and use interrupt_init for interrupt

btw also remane the corresponding file to the functionnality implemented

as ixp arch implement two timer - one based on interrupt - so all the timer
related code is moved to timer.c

Signed-off-by: Jean-Christophe PLAGNIOL-VILLARD <plagnioj@jcrosoft.com>

1 files changed, 0 insertions, 228 deletions

diff --git a/cpu/arm920t/s3c24x0/interrupts.c b/cpu/arm920t/s3c24x0/interrupts.c
deleted file mode 100644
index b8ce6ae94a..0000000000
--- a/cpu/arm920t/s3c24x0/interrupts.c
+++ /dev/null
@@ -1,228 +0,0 @@
-/*
- * (C) Copyright 2002
- * Sysgo Real-Time Solutions, GmbH <www.elinos.com>
- * Marius Groeger <mgroeger@sysgo.de>
- *
- * (C) Copyright 2002
- * Sysgo Real-Time Solutions, GmbH <www.elinos.com>
- * Alex Zuepke <azu@sysgo.de>
- *
- * (C) Copyright 2002
- * Gary Jennejohn, DENX Software Engineering, <garyj@denx.de>
- *
- * See file CREDITS for list of people who contributed to this
- * project.
- *
- * 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.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software
- * Foundation, Inc., 59 Temple Place, Suite 330, Boston,
- * MA 02111-1307 USA
- */
-
-#include <common.h>
-#if defined(CONFIG_S3C2400) || defined (CONFIG_S3C2410) || defined (CONFIG_TRAB)
-
-#include <arm920t.h>
-#if defined(CONFIG_S3C2400)
-#include <s3c2400.h>
-#elif defined(CONFIG_S3C2410)
-#include <s3c2410.h>
-#endif
-
-int timer_load_val = 0;
-
-/* macro to read the 16 bit timer */
-static inline ulong READ_TIMER(void)
-{
-	S3C24X0_TIMERS * const timers = S3C24X0_GetBase_TIMERS();
-
-	return (timers->TCNTO4 & 0xffff);
-}
-
-static ulong timestamp;
-static ulong lastdec;
-
-int interrupt_init (void)
-{
-	S3C24X0_TIMERS * const timers = S3C24X0_GetBase_TIMERS();
-
-	/* use PWM Timer 4 because it has no output */
-	/* prescaler for Timer 4 is 16 */
-	timers->TCFG0 = 0x0f00;
-	if (timer_load_val == 0)
-	{
-		/*
-		 * for 10 ms clock period @ PCLK with 4 bit divider = 1/2
-		 * (default) and prescaler = 16. Should be 10390
-		 * @33.25MHz and 15625 @ 50 MHz
-		 */
-		timer_load_val = get_PCLK()/(2 * 16 * 100);
-	}
-	/* load value for 10 ms timeout */
-	lastdec = timers->TCNTB4 = timer_load_val;
-	/* auto load, manual update of Timer 4 */
-	timers->TCON = (timers->TCON & ~0x0700000) | 0x600000;
-	/* auto load, start Timer 4 */
-	timers->TCON = (timers->TCON & ~0x0700000) | 0x500000;
-	timestamp = 0;
-
-	return (0);
-}
-
-/*
- * timer without interrupts
- */
-
-void reset_timer (void)
-{
-	reset_timer_masked ();
-}
-
-ulong get_timer (ulong base)
-{
-	return get_timer_masked () - base;
-}
-
-void set_timer (ulong t)
-{
-	timestamp = t;
-}
-
-void udelay (unsigned long usec)
-{
-	ulong tmo;
-	ulong start = get_timer(0);
-
-	tmo = usec / 1000;
-	tmo *= (timer_load_val * 100);
-	tmo /= 1000;
-
-	while ((ulong)(get_timer_masked () - start) < tmo)
-		/*NOP*/;
-}
-
-void reset_timer_masked (void)
-{
-	/* reset time */
-	lastdec = READ_TIMER();
-	timestamp = 0;
-}
-
-ulong get_timer_masked (void)
-{
-	ulong now = READ_TIMER();
-
-	if (lastdec >= now) {
-		/* normal mode */
-		timestamp += lastdec - now;
-	} else {
-		/* we have an overflow ... */
-		timestamp += lastdec + timer_load_val - now;
-	}
-	lastdec = now;
-
-	return timestamp;
-}
-
-void udelay_masked (unsigned long usec)
-{
-	ulong tmo;
-	ulong endtime;
-	signed long diff;
-
-	if (usec >= 1000) {
-		tmo = usec / 1000;
-		tmo *= (timer_load_val * 100);
-		tmo /= 1000;
-	} else {
-		tmo = usec * (timer_load_val * 100);
-		tmo /= (1000*1000);
-	}
-
-	endtime = get_timer_masked () + tmo;
-
-	do {
-		ulong now = get_timer_masked ();
-		diff = endtime - now;
-	} while (diff >= 0);
-}
-
-/*
- * This function is derived from PowerPC code (read timebase as long long).
- * On ARM it just returns the timer value.
- */
-unsigned long long get_ticks(void)
-{
-	return get_timer(0);
-}
-
-/*
- * This function is derived from PowerPC code (timebase clock frequency).
- * On ARM it returns the number of timer ticks per second.
- */
-ulong get_tbclk (void)
-{
-	ulong tbclk;
-
-#if defined(CONFIG_SMDK2400) || defined(CONFIG_TRAB)
-	tbclk = timer_load_val * 100;
-#elif defined(CONFIG_SBC2410X) || \
-      defined(CONFIG_SMDK2410) || \
-      defined(CONFIG_VCMA9)
-	tbclk = CONFIG_SYS_HZ;
-#else
-#	error "tbclk not configured"
-#endif
-
-	return tbclk;
-}
-
-/*
- * reset the cpu by setting up the watchdog timer and let him time out
- */
-void reset_cpu (ulong ignored)
-{
-	volatile S3C24X0_WATCHDOG * watchdog;
-
-#ifdef CONFIG_TRAB
-	extern void disable_vfd (void);
-
-	disable_vfd();
-#endif
-
-	watchdog = S3C24X0_GetBase_WATCHDOG();
-
-	/* Disable watchdog */
-	watchdog->WTCON = 0x0000;
-
-	/* Initialize watchdog timer count register */
-	watchdog->WTCNT = 0x0001;
-
-	/* Enable watchdog timer; assert reset at timer timeout */
-	watchdog->WTCON = 0x0021;
-
-	while(1);	/* loop forever and wait for reset to happen */
-
-	/*NOTREACHED*/
-}
-
-#ifdef CONFIG_USE_IRQ
-void s3c2410_irq(void)
-{
-	S3C24X0_INTERRUPT * irq = S3C24X0_GetBase_INTERRUPT();
-	u_int32_t intpnd = irq->INTPND;
-
-}
-#endif /* USE_IRQ */
-
-#endif /* defined(CONFIG_S3C2400) || defined (CONFIG_S3C2410) || defined (CONFIG_TRAB) */