[ARM] S3C: Move time.c to arch/arm/plat-s3c

Move time.c to arch/arm/plat-s3c
to be shared with the S3C64XX implementations.

Signed-off-by: Ben Dooks <ben-linux@fluff.org>

2 files changed, 0 insertions, 261 deletions

diff --git a/arch/arm/plat-s3c24xx/Makefile b/arch/arm/plat-s3c24xx/Makefile
index 80cf8eb211ff..8da14beda770 100644
--- a/arch/arm/plat-s3c24xx/Makefile
+++ b/arch/arm/plat-s3c24xx/Makefile
@@ -17,7 +17,6 @@ obj-y				+= irq.o
 obj-y                           += devs.o
 obj-y                           += gpio.o
 obj-y                           += gpiolib.o
-obj-y                           += time.o
 obj-y                           += clock.o
 obj-y                           += pwm-clock.o
 obj-$(CONFIG_S3C24XX_DCLK)      += clock-dclk.o
diff --git a/arch/arm/plat-s3c24xx/time.c b/arch/arm/plat-s3c24xx/time.c
deleted file mode 100644
index c51916236ac0..000000000000
--- a/arch/arm/plat-s3c24xx/time.c
+++ /dev/null
@@ -1,260 +0,0 @@
-/* linux/arch/arm/plat-s3c24xx/time.c
- *
- * Copyright (C) 2003-2005 Simtec Electronics
- *      Ben Dooks, <ben@simtec.co.uk>
- *
- * 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 <linux/kernel.h>
-#include <linux/sched.h>
-#include <linux/init.h>
-#include <linux/interrupt.h>
-#include <linux/irq.h>
-#include <linux/err.h>
-#include <linux/clk.h>
-#include <linux/io.h>
-
-#include <asm/system.h>
-#include <asm/leds.h>
-#include <asm/mach-types.h>
-
-#include <asm/irq.h>
-#include <mach/map.h>
-#include <plat/regs-timer.h>
-#include <mach/regs-irq.h>
-#include <asm/mach/time.h>
-
-#include <plat/clock.h>
-#include <plat/cpu.h>
-
-static unsigned long timer_startval;
-static unsigned long timer_usec_ticks;
-
-#define TIMER_USEC_SHIFT 16
-
-/* we use the shifted arithmetic to work out the ratio of timer ticks
- * to usecs, as often the peripheral clock is not a nice even multiple
- * of 1MHz.
- *
- * shift of 14 and 15 are too low for the 12MHz, 16 seems to be ok
- * for the current HZ value of 200 without producing overflows.
- *
- * Original patch by Dimitry Andric, updated by Ben Dooks
-*/
-
-
-/* timer_mask_usec_ticks
- *
- * given a clock and divisor, make the value to pass into timer_ticks_to_usec
- * to scale the ticks into usecs
-*/
-
-static inline unsigned long
-timer_mask_usec_ticks(unsigned long scaler, unsigned long pclk)
-{
-        unsigned long den = pclk / 1000;
-
-        return ((1000 << TIMER_USEC_SHIFT) * scaler + (den >> 1)) / den;
-}
-
-/* timer_ticks_to_usec
- *
- * convert timer ticks to usec.
-*/
-
-static inline unsigned long timer_ticks_to_usec(unsigned long ticks)
-{
-        unsigned long res;
-
-        res = ticks * timer_usec_ticks;
-        res += 1 << (TIMER_USEC_SHIFT - 4);     /* round up slightly */
-
-        return res >> TIMER_USEC_SHIFT;
-}
-
-/***
- * Returns microsecond  since last clock interrupt.  Note that interrupts
- * will have been disabled by do_gettimeoffset()
- * IRQs are disabled before entering here from do_gettimeofday()
- */
-
-#define SRCPND_TIMER4 (1<<(IRQ_TIMER4 - IRQ_EINT0))
-
-static unsigned long s3c2410_gettimeoffset (void)
-{
-        unsigned long tdone;
-        unsigned long irqpend;
-        unsigned long tval;
-
-        /* work out how many ticks have gone since last timer interrupt */
-
-        tval =  __raw_readl(S3C2410_TCNTO(4));
-        tdone = timer_startval - tval;
-
-        /* check to see if there is an interrupt pending */
-
-        irqpend = __raw_readl(S3C2410_SRCPND);
-        if (irqpend & SRCPND_TIMER4) {
-                /* re-read the timer, and try and fix up for the missed
-                 * interrupt. Note, the interrupt may go off before the
-                 * timer has re-loaded from wrapping.
-                 */
-
-                tval =  __raw_readl(S3C2410_TCNTO(4));
-                tdone = timer_startval - tval;
-
-                if (tval != 0)
-                        tdone += timer_startval;
-        }
-
-        return timer_ticks_to_usec(tdone);
-}
-
-
-/*
- * IRQ handler for the timer
- */
-static irqreturn_t
-s3c2410_timer_interrupt(int irq, void *dev_id)
-{
-        timer_tick();
-        return IRQ_HANDLED;
-}
-
-static struct irqaction s3c2410_timer_irq = {
-        .name           = "S3C2410 Timer Tick",
-        .flags          = IRQF_DISABLED | IRQF_TIMER | IRQF_IRQPOLL,
-        .handler        = s3c2410_timer_interrupt,
-};
-
-#define use_tclk1_12() ( \
-        machine_is_bast()       || \
-        machine_is_vr1000()     || \
-        machine_is_anubis()     || \
-        machine_is_osiris() )
-
-/*
- * Set up timer interrupt, and return the current time in seconds.
- *
- * Currently we only use timer4, as it is the only timer which has no
- * other function that can be exploited externally
- */
-static void s3c2410_timer_setup (void)
-{
-        unsigned long tcon;
-        unsigned long tcnt;
-        unsigned long tcfg1;
-        unsigned long tcfg0;
-
-        tcnt = 0xffff;  /* default value for tcnt */
-
-        /* read the current timer configuration bits */
-
-        tcon = __raw_readl(S3C2410_TCON);
-        tcfg1 = __raw_readl(S3C2410_TCFG1);
-        tcfg0 = __raw_readl(S3C2410_TCFG0);
-
-        /* configure the system for whichever machine is in use */
-
-        if (use_tclk1_12()) {
-                /* timer is at 12MHz, scaler is 1 */
-                timer_usec_ticks = timer_mask_usec_ticks(1, 12000000);
-                tcnt = 12000000 / HZ;
-
-                tcfg1 &= ~S3C2410_TCFG1_MUX4_MASK;
-                tcfg1 |= S3C2410_TCFG1_MUX4_TCLK1;
-        } else {
-                unsigned long pclk;
-                struct clk *clk;
-
-                /* for the h1940 (and others), we use the pclk from the core
-                 * to generate the timer values. since values around 50 to
-                 * 70MHz are not values we can directly generate the timer
-                 * value from, we need to pre-scale and divide before using it.
-                 *
-                 * for instance, using 50.7MHz and dividing by 6 gives 8.45MHz
-                 * (8.45 ticks per usec)
-                 */
-
-                /* this is used as default if no other timer can be found */
-
-                clk = clk_get(NULL, "timers");
-                if (IS_ERR(clk))
-                        panic("failed to get clock for system timer");
-
-                clk_enable(clk);
-
-                pclk = clk_get_rate(clk);
-
-                /* configure clock tick */
-
-                timer_usec_ticks = timer_mask_usec_ticks(6, pclk);
-
-                tcfg1 &= ~S3C2410_TCFG1_MUX4_MASK;
-                tcfg1 |= S3C2410_TCFG1_MUX4_DIV2;
-
-                tcfg0 &= ~S3C2410_TCFG_PRESCALER1_MASK;
-                tcfg0 |= ((6 - 1) / 2) << S3C2410_TCFG_PRESCALER1_SHIFT;
-
-                tcnt = (pclk / 6) / HZ;
-        }
-
-        /* timers reload after counting zero, so reduce the count by 1 */
-
-        tcnt--;
-
-        printk("timer tcon=%08lx, tcnt %04lx, tcfg %08lx,%08lx, usec %08lx\n",
-               tcon, tcnt, tcfg0, tcfg1, timer_usec_ticks);
-
-        /* check to see if timer is within 16bit range... */
-        if (tcnt > 0xffff) {
-                panic("setup_timer: HZ is too small, cannot configure timer!");
-                return;
-        }
-
-        __raw_writel(tcfg1, S3C2410_TCFG1);
-        __raw_writel(tcfg0, S3C2410_TCFG0);
-
-        timer_startval = tcnt;
-        __raw_writel(tcnt, S3C2410_TCNTB(4));
-
-        /* ensure timer is stopped... */
-
-        tcon &= ~(7<<20);
-        tcon |= S3C2410_TCON_T4RELOAD;
-        tcon |= S3C2410_TCON_T4MANUALUPD;
-
-        __raw_writel(tcon, S3C2410_TCON);
-        __raw_writel(tcnt, S3C2410_TCNTB(4));
-        __raw_writel(tcnt, S3C2410_TCMPB(4));
-
-        /* start the timer running */
-        tcon |= S3C2410_TCON_T4START;
-        tcon &= ~S3C2410_TCON_T4MANUALUPD;
-        __raw_writel(tcon, S3C2410_TCON);
-}
-
-static void __init s3c2410_timer_init (void)
-{
-        s3c2410_timer_setup();
-        setup_irq(IRQ_TIMER4, &s3c2410_timer_irq);
-}
-
-struct sys_timer s3c24xx_timer = {
-        .init           = s3c2410_timer_init,
-        .offset         = s3c2410_gettimeoffset,
-        .resume         = s3c2410_timer_setup
-};