timer.c File Reference

#include <timer.h>
#include <delay.h>
#include <device/mmio.h>
#include "dmtimer.h"
#include "clock.h"

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Macros
#define	CLKSEL_M_OSC   (0x01 << 0)

Functions
static uint32_t	timer_raw_value (void)
void	timer_monotonic_get (struct mono_time *mt)
	Get GTI counter value. More...
void	init_timer (void)
	Init Global System Timers Unit (GTI). More...

Variables
struct am335x_dmtimer *	dmtimer_2 = (struct am335x_dmtimer *)DMTIMER_2

Macro Definition Documentation

CLKSEL_M_OSC

#define CLKSEL_M_OSC   (0x01 << 0)

Definition at line 12 of file timer.c.

Function Documentation

init_timer()

void init_timer

(

void

)

Init Global System Timers Unit (GTI).

Configure timer to run at 1MHz tick-rate.

Init Global System Timers Unit (GTI).

Definition at line 24 of file timer.c.

References am335x_cm_dpll, CLKSEL_M_OSC, am335x_cm_dpll_regs::clksel_timer2_clk, dmtimer_2, am335x_dmtimer::tclr, TCLR_AR, TCLR_ST, and write32().

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timer_monotonic_get()

void timer_monotonic_get

(

struct mono_time *

mt

)

Get GTI counter value.

Parameters

mt	Structure to fill

Definition at line 19 of file timer.c.

References M_OSC_MHZ, mono_time_set_usecs(), and timer_raw_value().

Referenced by stopwatch_init(), and stopwatch_tick().

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timer_raw_value()

static uint32_t timer_raw_value ( void  )

static

Definition at line 14 of file timer.c.

References dmtimer_2, read32(), and am335x_dmtimer::tcrr.

Referenced by timer_monotonic_get().

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Variable Documentation

dmtimer_2

struct am335x_dmtimer* dmtimer_2 = (struct am335x_dmtimer *)DMTIMER_2

Definition at line 10 of file timer.c.

Referenced by init_timer(), and timer_raw_value().