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r: 272682
b: refs/heads/master
c: 05387a9
h: refs/heads/master
v: v3
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Jonas Aaberg authored and Linus Walleij committed Sep 22, 2011
1 parent a2f748b commit 02fb620
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2 changes: 1 addition & 1 deletion [refs]
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@@ -1,2 +1,2 @@
---
refs/heads/master: 2f73a06843e357190a7a3924c7afb0534cf6adef
refs/heads/master: 05387a9fbf334174e0f84fa77e493c1a804993c9
47 changes: 2 additions & 45 deletions trunk/arch/arm/plat-nomadik/include/plat/mtu.h
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@@ -1,54 +1,11 @@
#ifndef __PLAT_MTU_H
#define __PLAT_MTU_H

/*
* Guaranteed runtime conversion range in seconds for
* the clocksource and clockevent.
*/
#define MTU_MIN_RANGE 4

/* should be set by the platform code */
extern void __iomem *mtu_base;

/*
* The MTU device hosts four different counters, with 4 set of
* registers. These are register names.
*/

#define MTU_IMSC 0x00 /* Interrupt mask set/clear */
#define MTU_RIS 0x04 /* Raw interrupt status */
#define MTU_MIS 0x08 /* Masked interrupt status */
#define MTU_ICR 0x0C /* Interrupt clear register */

/* per-timer registers take 0..3 as argument */
#define MTU_LR(x) (0x10 + 0x10 * (x) + 0x00) /* Load value */
#define MTU_VAL(x) (0x10 + 0x10 * (x) + 0x04) /* Current value */
#define MTU_CR(x) (0x10 + 0x10 * (x) + 0x08) /* Control reg */
#define MTU_BGLR(x) (0x10 + 0x10 * (x) + 0x0c) /* At next overflow */

/* bits for the control register */
#define MTU_CRn_ENA 0x80
#define MTU_CRn_PERIODIC 0x40 /* if 0 = free-running */
#define MTU_CRn_PRESCALE_MASK 0x0c
#define MTU_CRn_PRESCALE_1 0x00
#define MTU_CRn_PRESCALE_16 0x04
#define MTU_CRn_PRESCALE_256 0x08
#define MTU_CRn_32BITS 0x02
#define MTU_CRn_ONESHOT 0x01 /* if 0 = wraps reloading from BGLR*/

/* Other registers are usual amba/primecell registers, currently not used */
#define MTU_ITCR 0xff0
#define MTU_ITOP 0xff4

#define MTU_PERIPH_ID0 0xfe0
#define MTU_PERIPH_ID1 0xfe4
#define MTU_PERIPH_ID2 0xfe8
#define MTU_PERIPH_ID3 0xfeC

#define MTU_PCELL0 0xff0
#define MTU_PCELL1 0xff4
#define MTU_PCELL2 0xff8
#define MTU_PCELL3 0xffC
void nmdk_clkevt_reset(void);
void nmdk_clksrc_reset(void);

#endif /* __PLAT_MTU_H */

50 changes: 47 additions & 3 deletions trunk/arch/arm/plat-nomadik/timer.c
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Expand Up @@ -21,7 +21,51 @@
#include <asm/mach/time.h>
#include <asm/sched_clock.h>

#include <plat/mtu.h>
/*
* Guaranteed runtime conversion range in seconds for
* the clocksource and clockevent.
*/
#define MTU_MIN_RANGE 4

/*
* The MTU device hosts four different counters, with 4 set of
* registers. These are register names.
*/

#define MTU_IMSC 0x00 /* Interrupt mask set/clear */
#define MTU_RIS 0x04 /* Raw interrupt status */
#define MTU_MIS 0x08 /* Masked interrupt status */
#define MTU_ICR 0x0C /* Interrupt clear register */

/* per-timer registers take 0..3 as argument */
#define MTU_LR(x) (0x10 + 0x10 * (x) + 0x00) /* Load value */
#define MTU_VAL(x) (0x10 + 0x10 * (x) + 0x04) /* Current value */
#define MTU_CR(x) (0x10 + 0x10 * (x) + 0x08) /* Control reg */
#define MTU_BGLR(x) (0x10 + 0x10 * (x) + 0x0c) /* At next overflow */

/* bits for the control register */
#define MTU_CRn_ENA 0x80
#define MTU_CRn_PERIODIC 0x40 /* if 0 = free-running */
#define MTU_CRn_PRESCALE_MASK 0x0c
#define MTU_CRn_PRESCALE_1 0x00
#define MTU_CRn_PRESCALE_16 0x04
#define MTU_CRn_PRESCALE_256 0x08
#define MTU_CRn_32BITS 0x02
#define MTU_CRn_ONESHOT 0x01 /* if 0 = wraps reloading from BGLR*/

/* Other registers are usual amba/primecell registers, currently not used */
#define MTU_ITCR 0xff0
#define MTU_ITOP 0xff4

#define MTU_PERIPH_ID0 0xfe0
#define MTU_PERIPH_ID1 0xfe4
#define MTU_PERIPH_ID2 0xfe8
#define MTU_PERIPH_ID3 0xfeC

#define MTU_PCELL0 0xff0
#define MTU_PCELL1 0xff4
#define MTU_PCELL2 0xff8
#define MTU_PCELL3 0xffC

static bool clkevt_periodic;
static u32 clk_prescale;
Expand Down Expand Up @@ -68,7 +112,7 @@ static int nmdk_clkevt_next(unsigned long evt, struct clock_event_device *ev)
return 0;
}

static void nmdk_clkevt_reset(void)
void nmdk_clkevt_reset(void)
{
if (clkevt_periodic) {

Expand Down Expand Up @@ -138,7 +182,7 @@ static struct irqaction nmdk_timer_irq = {
.dev_id = &nmdk_clkevt,
};

static void nmdk_clksrc_reset(void)
void nmdk_clksrc_reset(void)
{
/* Disable */
writel(0, mtu_base + MTU_CR(0));
Expand Down

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