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authorAlexandre Belloni <alexandre.belloni@free-electrons.com>2016-09-09 13:13:48 +0200
committerDaniel Lezcano <daniel.lezcano@linaro.org>2016-09-12 07:28:45 +0200
commita17686c462441a01973c18c4c47986a320a5ebe3 (patch)
tree9c6ec47f432f9686395f0180f092632955b5cf38 /drivers/clocksource/timer-atmel-pit.c
parente2a2d38501cb759333342d97442b3742830752ca (diff)
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>
Diffstat (limited to 'drivers/clocksource/timer-atmel-pit.c')
-rw-r--r--drivers/clocksource/timer-atmel-pit.c79
1 files changed, 34 insertions, 45 deletions
diff --git a/drivers/clocksource/timer-atmel-pit.c b/drivers/clocksource/timer-atmel-pit.c
index 7f0f5b26d8c5..da7e6d4eef4d 100644
--- a/drivers/clocksource/timer-atmel-pit.c
+++ b/drivers/clocksource/timer-atmel-pit.c
@@ -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);