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clocksource/drivers/tango-xtal: Replace code by clocksource_mmio_init

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The current code to initialize, register and read the clocksource is
already factored out in mmio.c via the clocksource_mmio_init function.

Factor out the code with the clocksource_mmio_init function.

Signed-off-by: Daniel Lezcano <daniel.lezcano@linaro.org>
This commit is contained in:
Daniel Lezcano 2015-11-13 10:44:38 +01:00
parent 46e7c3c6e5
commit 0881841f7e
2 changed files with 4 additions and 15 deletions
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1
drivers/clocksource/Kconfig
View File

@ -351,6 +351,7 @@ config CLKSRC_TANGO_XTAL
bool "Clocksource for Tango SoC" if COMPILE_TEST
depends on ARM
select CLKSRC_OF
select CLKSRC_MMIO
help
This enables the clocksource for Tango SoC

18
drivers/clocksource/tango_xtal.c
View File

@ -19,19 +19,6 @@ static u64 notrace read_sched_clock(void)
return read_xtal_counter();
}
static cycle_t read_clocksource(struct clocksource *cs)
{
return read_xtal_counter();
}
static struct clocksource tango_xtal = {
.name = "tango-xtal",
.rating = 350,
.read = read_clocksource,
.mask = CLOCKSOURCE_MASK(32),
.flags = CLOCK_SOURCE_IS_CONTINUOUS,
};
static void __init tango_clocksource_init(struct device_node *np)
{
struct clk *clk;
@ -53,8 +40,9 @@ static void __init tango_clocksource_init(struct device_node *np)
delay_timer.freq = xtal_freq;
delay_timer.read_current_timer = read_xtal_counter;
ret = clocksource_register_hz(&tango_xtal, xtal_freq);
if (ret != 0) {
ret = clocksource_mmio_init(xtal_in_cnt, "tango-xtal", xtal_freq, 350,
32, clocksource_mmio_readl_up);
if (!ret) {
pr_err("%s: registration failed\n", np->full_name);
return;
}