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clocksource/drivers/timer-atmel-pit: Drop at91sam926x_pit_common_init 

Merge at91sam926x_pit_common_init in at91sam926x_pit_dt_init as this is the
only initialization method now.

Acked-by: Nicolas Ferre <nicolas.ferre@atmel.com>
Signed-off-by: Alexandre Belloni <alexandre.belloni@free-electrons.com>
Signed-off-by: Daniel Lezcano <daniel.lezcano@linaro.org>
This commit is contained in:
Alexandre Belloni 2016-09-09 13:13:48 +02:00 committed by Daniel Lezcano
parent e2a2d38501
commit a17686c462
1 changed files with 34 additions and 45 deletions
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79
drivers/clocksource/timer-atmel-pit.c
View File

@ -177,11 +177,41 @@ static irqreturn_t at91sam926x_pit_interrupt(int irq, void *dev_id)
/*
* Set up both clocksource and clockevent support.
*/
static int __init at91sam926x_pit_common_init(struct pit_data *data)
static int __init at91sam926x_pit_dt_init(struct device_node *node)
{
unsigned long pit_rate;
unsigned bits;
int ret;
unsigned long pit_rate;
unsigned bits;
int ret;
struct pit_data *data;
data = kzalloc(sizeof(*data), GFP_KERNEL);
if (!data)
return -ENOMEM;
data->base = of_iomap(node, 0);
if (!data->base) {
pr_err("Could not map PIT address\n");
return -ENXIO;
}
data->mck = of_clk_get(node, 0);
if (IS_ERR(data->mck)) {
pr_err("Unable to get mck clk\n");
return PTR_ERR(data->mck);
}
ret = clk_prepare_enable(data->mck);
if (ret) {
pr_err("Unable to enable mck\n");
return ret;
}
/* Get the interrupts property */
data->irq = irq_of_parse_and_map(node, 0);
if (!data->irq) {
pr_err("Unable to get IRQ from DT\n");
return -EINVAL;
}
/*
* Use our actual MCK to figure out how many MCK/16 ticks per
@ -236,46 +266,5 @@ static int __init at91sam926x_pit_common_init(struct pit_data *data)
return 0;
}
static int __init at91sam926x_pit_dt_init(struct device_node *node)
{
struct pit_data *data;
int ret;
data = kzalloc(sizeof(*data), GFP_KERNEL);
if (!data)
return -ENOMEM;
data->base = of_iomap(node, 0);
if (!data->base) {
pr_err("Could not map PIT address\n");
return -ENXIO;
}
data->mck = of_clk_get(node, 0);
if (IS_ERR(data->mck))
/* Fallback on clkdev for !CCF-based boards */
data->mck = clk_get(NULL, "mck");
if (IS_ERR(data->mck)) {
pr_err("Unable to get mck clk\n");
return PTR_ERR(data->mck);
}
ret = clk_prepare_enable(data->mck);
if (ret) {
pr_err("Unable to enable mck\n");
return ret;
}
/* Get the interrupts property */
data->irq = irq_of_parse_and_map(node, 0);
if (!data->irq) {
pr_err("Unable to get IRQ from DT\n");
return -EINVAL;
}
return at91sam926x_pit_common_init(data);
}
CLOCKSOURCE_OF_DECLARE(at91sam926x_pit, "atmel,at91sam9260-pit",
at91sam926x_pit_dt_init);