[MIPS] Sibyte: Split and move clock code.

Signed-off-by: Ralf Baechle <ralf@linux-mips.org>

1 files changed, 3 insertions, 173 deletions

diff --git a/arch/mips/sibyte/sb1250/time.c b/arch/mips/sibyte/sb1250/time.c
index 24b9c8bad62..68337bf7a5a 100644
--- a/arch/mips/sibyte/sb1250/time.c
+++ b/arch/mips/sibyte/sb1250/time.c
@@ -15,180 +15,10 @@
  * 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/clockchips.h>
-#include <linux/interrupt.h>
-#include <linux/percpu.h>
+#include <linux/init.h>
 
-#include <asm/addrspace.h>
-#include <asm/io.h>
-#include <asm/time.h>
-
-#include <asm/sibyte/sb1250.h>
-#include <asm/sibyte/sb1250_regs.h>
-#include <asm/sibyte/sb1250_int.h>
-#include <asm/sibyte/sb1250_scd.h>
-
-#define IMR_IP2_VAL	K_INT_MAP_I0
-#define IMR_IP3_VAL	K_INT_MAP_I1
-#define IMR_IP4_VAL	K_INT_MAP_I2
-
-#define SB1250_HPT_NUM		3
-#define SB1250_HPT_VALUE	M_SCD_TIMER_CNT /* max value */
-
-/*
- * The general purpose timer ticks at 1MHz independent if
- * the rest of the system
- */
-static void sibyte_set_mode(enum clock_event_mode mode,
-                           struct clock_event_device *evt)
-{
-	unsigned int cpu = smp_processor_id();
-	void __iomem *cfg, *init;
-
-	cfg = IOADDR(A_SCD_TIMER_REGISTER(cpu, R_SCD_TIMER_CFG));
-	init = IOADDR(A_SCD_TIMER_REGISTER(cpu, R_SCD_TIMER_INIT));
-
-	switch (mode) {
-	case CLOCK_EVT_MODE_PERIODIC:
-		__raw_writeq(0, cfg);
-		__raw_writeq((V_SCD_TIMER_FREQ / HZ) - 1, init);
-		__raw_writeq(M_SCD_TIMER_ENABLE | M_SCD_TIMER_MODE_CONTINUOUS,
-			     cfg);
-		break;
-
-	case CLOCK_EVT_MODE_ONESHOT:
-		/* Stop the timer until we actually program a shot */
-	case CLOCK_EVT_MODE_SHUTDOWN:
-		__raw_writeq(0, cfg);
-		break;
-
-	case CLOCK_EVT_MODE_UNUSED:	/* shuddup gcc */
-	case CLOCK_EVT_MODE_RESUME:
-		;
-	}
-}
-
-static int sibyte_next_event(unsigned long delta, struct clock_event_device *cd)
-{
-	unsigned int cpu = smp_processor_id();
-	void __iomem *cfg, *init;
-
-	cfg = IOADDR(A_SCD_TIMER_REGISTER(cpu, R_SCD_TIMER_CFG));
-	init = IOADDR(A_SCD_TIMER_REGISTER(cpu, R_SCD_TIMER_INIT));
-
-	__raw_writeq(delta - 1, init);
-	__raw_writeq(M_SCD_TIMER_ENABLE, cfg);
-
-	return 0;
-}
-
-static irqreturn_t sibyte_counter_handler(int irq, void *dev_id)
-{
-	unsigned int cpu = smp_processor_id();
-	struct clock_event_device *cd = dev_id;
-	void __iomem *cfg;
-	unsigned long tmode;
-
-	if (cd->mode == CLOCK_EVT_MODE_PERIODIC)
-		tmode = M_SCD_TIMER_ENABLE | M_SCD_TIMER_MODE_CONTINUOUS;
-	else
-		tmode = 0;
-
-	/* ACK interrupt */
-	cfg = IOADDR(A_SCD_TIMER_REGISTER(cpu, R_SCD_TIMER_CFG));
-	____raw_writeq(tmode, cfg);
-
-	cd->event_handler(cd);
-
-	return IRQ_HANDLED;
-}
-
-static DEFINE_PER_CPU(struct clock_event_device, sibyte_hpt_clockevent);
-static DEFINE_PER_CPU(struct irqaction, sibyte_hpt_irqaction);
-static DEFINE_PER_CPU(char [18], sibyte_hpt_name);
-
-void __cpuinit sb1250_clockevent_init(void)
-{
-	unsigned int cpu = smp_processor_id();
-	unsigned int irq = K_INT_TIMER_0 + cpu;
-	struct irqaction *action = &per_cpu(sibyte_hpt_irqaction, cpu);
-	struct clock_event_device *cd = &per_cpu(sibyte_hpt_clockevent, cpu);
-	unsigned char *name = per_cpu(sibyte_hpt_name, cpu);
-
-	/* Only have 4 general purpose timers, and we use last one as hpt */
-	BUG_ON(cpu > 2);
-
-	sprintf(name, "sb1250-counter-%d", cpu);
-	cd->name		= name;
-	cd->features		= CLOCK_EVT_FEAT_PERIODIC |
-				  CLOCK_EVT_FEAT_ONESHOT;
-	clockevent_set_clock(cd, V_SCD_TIMER_FREQ);
-	cd->max_delta_ns	= clockevent_delta2ns(0x7fffff, cd);
-	cd->min_delta_ns	= clockevent_delta2ns(1, cd);
-	cd->rating		= 200;
-	cd->irq			= irq;
-	cd->cpumask		= cpumask_of_cpu(cpu);
-	cd->set_next_event	= sibyte_next_event;
-	cd->set_mode		= sibyte_set_mode;
-	clockevents_register_device(cd);
-
-	sb1250_mask_irq(cpu, irq);
-
-	/*
-	 * Map the timer interrupt to IP[4] of this cpu
-	 */
-	__raw_writeq(IMR_IP4_VAL,
-		     IOADDR(A_IMR_REGISTER(cpu, R_IMR_INTERRUPT_MAP_BASE) +
-			    (irq << 3)));
-
-	sb1250_unmask_irq(cpu, irq);
-
-	action->handler	= sibyte_counter_handler;
-	action->flags	= IRQF_DISABLED | IRQF_PERCPU;
-	action->name	= name;
-	action->dev_id	= cd;
-	setup_irq(irq, action);
-}
-
-/*
- * The HPT is free running from SB1250_HPT_VALUE down to 0 then starts over
- * again.
- */
-static cycle_t sb1250_hpt_read(void)
-{
-	unsigned int count;
-
-	count = G_SCD_TIMER_CNT(__raw_readq(IOADDR(A_SCD_TIMER_REGISTER(SB1250_HPT_NUM, R_SCD_TIMER_CNT))));
-
-	return SB1250_HPT_VALUE - count;
-}
-
-struct clocksource bcm1250_clocksource = {
-	.name	= "MIPS",
-	.rating	= 200,
-	.read	= sb1250_hpt_read,
-	.mask	= CLOCKSOURCE_MASK(23),
-	.flags	= CLOCK_SOURCE_IS_CONTINUOUS,
-};
-
-void __init sb1250_clocksource_init(void)
-{
-	struct clocksource *cs = &bcm1250_clocksource;
-
-	/* Setup hpt using timer #3 but do not enable irq for it */
-	__raw_writeq(0,
-		     IOADDR(A_SCD_TIMER_REGISTER(SB1250_HPT_NUM,
-						 R_SCD_TIMER_CFG)));
-	__raw_writeq(SB1250_HPT_VALUE,
-		     IOADDR(A_SCD_TIMER_REGISTER(SB1250_HPT_NUM,
-						 R_SCD_TIMER_INIT)));
-	__raw_writeq(M_SCD_TIMER_ENABLE | M_SCD_TIMER_MODE_CONTINUOUS,
-		     IOADDR(A_SCD_TIMER_REGISTER(SB1250_HPT_NUM,
-						 R_SCD_TIMER_CFG)));
-
-	clocksource_set_clock(cs, V_SCD_TIMER_FREQ);
-	clocksource_register(cs);
-}
+extern void sb1250_clocksource_init(void);
+extern void sb1250_clockevent_init(void);
 
 void __init plat_time_init(void)
 {