diff options
author | Alexandre Belloni <alexandre.belloni@free-electrons.com> | 2016-09-09 11:13:48 (GMT) |
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committer | Daniel Lezcano <daniel.lezcano@linaro.org> | 2016-09-12 05:28:45 (GMT) |
commit | a17686c462441a01973c18c4c47986a320a5ebe3 (patch) | |
tree | 9c6ec47f432f9686395f0180f092632955b5cf38 /drivers/clocksource/timer-atmel-pit.c | |
parent | e2a2d38501cb759333342d97442b3742830752ca (diff) | |
download | linux-a17686c462441a01973c18c4c47986a320a5ebe3.tar.xz |
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.c | 79 |
1 files changed, 34 insertions, 45 deletions
diff --git a/drivers/clocksource/timer-atmel-pit.c b/drivers/clocksource/timer-atmel-pit.c index 7f0f5b2..da7e6d4 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); |