[ARM] Delete include/asm-arm/arch-versatile/time.h

Signed-off-by: Deepak Saxena <dsaxena@plexity.net>

include/asm-arm/arch-versatile/time.h

-/*
- *  linux/include/asm-arm/arch-versatile/time.h
- *
- * 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 <asm/system.h>
-#include <asm/leds.h>
-
-/*
- * Where is the timer (VA)?
- */
-#define TIMER0_VA_BASE		 IO_ADDRESS(VERSATILE_TIMER0_1_BASE)
-#define TIMER1_VA_BASE		(IO_ADDRESS(VERSATILE_TIMER0_1_BASE) + 0x20)
-#define TIMER2_VA_BASE		 IO_ADDRESS(VERSATILE_TIMER2_3_BASE)
-#define TIMER3_VA_BASE		(IO_ADDRESS(VERSATILE_TIMER2_3_BASE) + 0x20)
-#define VA_IC_BASE		 IO_ADDRESS(VERSATILE_VIC_BASE) 
-
-/*
- * How long is the timer interval?
- */
-#define TIMER_INTERVAL	(TICKS_PER_uSEC * mSEC_10)
-#if TIMER_INTERVAL >= 0x100000
-#define TIMER_RELOAD	(TIMER_INTERVAL >> 8)		/* Divide by 256 */
-#define TIMER_CTRL	0x88				/* Enable, Clock / 256 */
-#define TICKS2USECS(x)	(256 * (x) / TICKS_PER_uSEC)
-#elif TIMER_INTERVAL >= 0x10000
-#define TIMER_RELOAD	(TIMER_INTERVAL >> 4)		/* Divide by 16 */
-#define TIMER_CTRL	0x84				/* Enable, Clock / 16 */
-#define TICKS2USECS(x)	(16 * (x) / TICKS_PER_uSEC)
-#else
-#define TIMER_RELOAD	(TIMER_INTERVAL)
-#define TIMER_CTRL	0x80				/* Enable */
-#define TICKS2USECS(x)	((x) / TICKS_PER_uSEC)
-#endif
-
-#define TIMER_CTRL_IE	(1 << 5)	/* Interrupt Enable */
-
-/*
- * What does it look like?
- */
-typedef struct TimerStruct {
-	unsigned long TimerLoad;
-	unsigned long TimerValue;
-	unsigned long TimerControl;
-	unsigned long TimerClear;
-} TimerStruct_t;
-
-extern unsigned long (*gettimeoffset)(void);
-
-/*
- * Returns number of ms since last clock interrupt.  Note that interrupts
- * will have been disabled by do_gettimeoffset()
- */
-static unsigned long versatile_gettimeoffset(void)
-{
-	volatile TimerStruct_t *timer0 = (TimerStruct_t *)TIMER0_VA_BASE;
-	unsigned long ticks1, ticks2, status;
-
-	/*
-	 * Get the current number of ticks.  Note that there is a race
-	 * condition between us reading the timer and checking for
-	 * an interrupt.  We get around this by ensuring that the
-	 * counter has not reloaded between our two reads.
-	 */
-	ticks2 = timer0->TimerValue & 0xffff;
-	do {
-		ticks1 = ticks2;
-		status = __raw_readl(VA_IC_BASE + VIC_IRQ_RAW_STATUS);
-		ticks2 = timer0->TimerValue & 0xffff;
-	} while (ticks2 > ticks1);
-
-	/*
-	 * Number of ticks since last interrupt.
-	 */
-	ticks1 = TIMER_RELOAD - ticks2;
-
-	/*
-	 * Interrupt pending?  If so, we've reloaded once already.
-	 *
-	 * FIXME: Need to check this is effectively timer 0 that expires
-	 */
-	if (status & IRQMASK_TIMERINT0_1)
-		ticks1 += TIMER_RELOAD;
-
-	/*
-	 * Convert the ticks to usecs
-	 */
-	return TICKS2USECS(ticks1);
-}
-
-/*
- * IRQ handler for the timer
- */
-static irqreturn_t versatile_timer_interrupt(int irq, void *dev_id, struct pt_regs *regs)
-{
-	volatile TimerStruct_t *timer0 = (volatile TimerStruct_t *)TIMER0_VA_BASE;
-
-	// ...clear the interrupt
-	timer0->TimerClear = 1;
-
-	do_leds();
-	do_timer(regs);
-	do_profile(regs);
-
-	return IRQ_HANDLED;
-}
-
-/*
- * Set up timer interrupt, and return the current time in seconds.
- */
-void __init time_init(void)
-{
-	volatile TimerStruct_t *timer0 = (volatile TimerStruct_t *)TIMER0_VA_BASE;
-	volatile TimerStruct_t *timer1 = (volatile TimerStruct_t *)TIMER1_VA_BASE;
-	volatile TimerStruct_t *timer2 = (volatile TimerStruct_t *)TIMER2_VA_BASE;
-	volatile TimerStruct_t *timer3 = (volatile TimerStruct_t *)TIMER3_VA_BASE;
-
-	/* 
-	 * set clock frequency: 
-	 *	VERSATILE_REFCLK is 32KHz
-	 *	VERSATILE_TIMCLK is 1MHz
-	 */
-	*(volatile unsigned int *)IO_ADDRESS(VERSATILE_SCTL_BASE) |= 
-	  ((VERSATILE_TIMCLK << VERSATILE_TIMER1_EnSel) | (VERSATILE_TIMCLK << VERSATILE_TIMER2_EnSel) | 
-	   (VERSATILE_TIMCLK << VERSATILE_TIMER3_EnSel) | (VERSATILE_TIMCLK << VERSATILE_TIMER4_EnSel));
-
-	timer_irq.handler = versatile_timer_interrupt;
-
-	/*
-	 * Initialise to a known state (all timers off)
-	 */
-	timer0->TimerControl = 0;
-	timer1->TimerControl = 0;
-	timer2->TimerControl = 0;
-	timer3->TimerControl = 0;
-
-	timer0->TimerLoad    = TIMER_RELOAD;
-	timer0->TimerValue   = TIMER_RELOAD;
-	timer0->TimerControl = TIMER_CTRL | 0x40 | TIMER_CTRL_IE;  /* periodic + IE */
-
-	/* 
-	 * Make irqs happen for the system timer
-	 */
-	setup_irq(IRQ_TIMERINT0_1, &timer_irq);
-	gettimeoffset = versatile_gettimeoffset;
-}