#include <asm/io.h>
#include <div64.h>
#include <asm/arch/imx-regs.h>
+#include <asm/arch/clock.h>
/* General purpose timers registers */
struct mxc_gpt {
#define GPTCR_FRR (1 << 9) /* Freerun / restart */
#define GPTCR_CLKSOURCE_32 (4 << 6) /* Clock source */
#define GPTCR_TEN 1 /* Timer enable */
-#define CLK_32KHZ 32768 /* 32Khz input */
DECLARE_GLOBAL_DATA_PTR;
-#define timestamp (gd->tbl)
-#define lastinc (gd->lastinc)
-
static inline unsigned long long tick_to_time(unsigned long long tick)
{
tick *= CONFIG_SYS_HZ;
- do_div(tick, CLK_32KHZ);
+ do_div(tick, MXC_CLK32);
return tick;
}
static inline unsigned long long us_to_tick(unsigned long long usec)
{
- usec = usec * CLK_32KHZ + 999999;
+ usec = usec * MXC_CLK32 + 999999;
do_div(usec, 1000000);
return usec;
int timer_init(void)
{
int i;
- ulong val;
/* setup GP Timer 1 */
__raw_writel(GPTCR_SWR, &cur_gpt->control);
i = __raw_readl(&cur_gpt->control);
__raw_writel(i | GPTCR_CLKSOURCE_32 | GPTCR_TEN, &cur_gpt->control);
- val = __raw_readl(&cur_gpt->counter);
- lastinc = val / (CLK_32KHZ / CONFIG_SYS_HZ);
- timestamp = 0;
+ gd->arch.tbl = __raw_readl(&cur_gpt->counter);
+ gd->arch.tbu = 0;
return 0;
}
{
ulong now = __raw_readl(&cur_gpt->counter); /* current tick value */
- if (now >= lastinc) {
- /*
- * normal mode (non roll)
- * move stamp forward with absolut diff ticks
- */
- timestamp += (now - lastinc);
- } else {
- /* we have rollover of incrementer */
- timestamp += (0xFFFFFFFF - lastinc) + now;
- }
- lastinc = now;
- return timestamp;
+ /* increment tbu if tbl has rolled over */
+ if (now < gd->arch.tbl)
+ gd->arch.tbu++;
+ gd->arch.tbl = now;
+ return (((unsigned long long)gd->arch.tbu) << 32) | gd->arch.tbl;
}
ulong get_timer_masked(void)
{
/*
* get_ticks() returns a long long (64 bit), it wraps in
- * 2^64 / CONFIG_MX25_CLK32 = 2^64 / 2^15 = 2^49 ~ 5 * 10^14 (s) ~
+ * 2^64 / MXC_CLK32 = 2^64 / 2^15 = 2^49 ~ 5 * 10^14 (s) ~
* 5 * 10^9 days... and get_ticks() * CONFIG_SYS_HZ wraps in
* 5 * 10^6 days - long enough.
*/
*/
ulong get_tbclk(void)
{
- return CLK_32KHZ;
+ return MXC_CLK32;
}