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clocksource: scx200_hrt: Convert scx200 to use clocksource_register_hz
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Converts the scx200 clocksource to using clocksource_register_hz.

CC: Jim Cromie <jim.cromie@gmail.com>
Tested-by: Jim Cromie <jim.cromie@gmail.com>
Acked-by: Jim Cromie <jim.cromie@gmail.com>
Signed-off-by: John Stultz <john.stultz@linaro.org>
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John Stultz committed Feb 2, 2012
1 parent c7f798e commit 12d6d41
Showing 1 changed file with 7 additions and 13 deletions.
20 changes: 7 additions & 13 deletions drivers/clocksource/scx200_hrt.c
Original file line number Diff line number Diff line change
@@ -49,9 +49,6 @@ static cycle_t read_hrt(struct clocksource *cs)
return (cycle_t) inl(scx200_cb_base + SCx200_TIMER_OFFSET);
}

#define HRT_SHIFT_1 22
#define HRT_SHIFT_27 26

static struct clocksource cs_hrt = {
.name = "scx200_hrt",
.rating = 250,
@@ -63,6 +60,7 @@ static struct clocksource cs_hrt = {

static int __init init_hrt_clocksource(void)
{
u32 freq;
/* Make sure scx200 has initialized the configuration block */
if (!scx200_cb_present())
return -ENODEV;
@@ -79,19 +77,15 @@ static int __init init_hrt_clocksource(void)
outb(HR_TMEN | (mhz27 ? HR_TMCLKSEL : 0),
scx200_cb_base + SCx200_TMCNFG_OFFSET);

if (mhz27) {
cs_hrt.shift = HRT_SHIFT_27;
cs_hrt.mult = clocksource_hz2mult((HRT_FREQ + ppm) * 27,
cs_hrt.shift);
} else {
cs_hrt.shift = HRT_SHIFT_1;
cs_hrt.mult = clocksource_hz2mult(HRT_FREQ + ppm,
cs_hrt.shift);
}
freq = (HRT_FREQ + ppm);
if (mhz27)
freq *= 27;

pr_info("enabling scx200 high-res timer (%s MHz +%d ppm)\n",
printk(KERN_INFO "enabling scx200 high-res timer (%s MHz +%d ppm)\n",
mhz27 ? "27":"1", ppm);

return clocksource_register(&cs_hrt);
return clocksource_register_hz(&cs_hrt, freq);
}

module_init(init_hrt_clocksource);

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