diff options
author | Rob Herring <robh@kernel.org> | 2015-05-12 21:23:23 (GMT) |
---|---|---|
committer | Alexandre Belloni <alexandre.belloni@free-electrons.com> | 2015-09-05 17:37:15 (GMT) |
commit | 8c0961ba7c9356186a0606a391f08e2ecb491a57 (patch) | |
tree | dfcd9e54d61e118f2a805acbc240ec8143bd43e2 | |
parent | dc2280ebf45bfa4fbc4b1588a6642aa33454a9b8 (diff) | |
download | linux-8c0961ba7c9356186a0606a391f08e2ecb491a57.tar.xz |
rtc: sa1100: prepare to share sa1100_rtc_ops
Factor out the RTC initialization from the platform device specific
parts in order to share the RTC device ops with other drivers.
Specifically, it will be shared with rtc-pxa driver.
Signed-off-by: Rob Herring <robh@kernel.org>
Cc: Robert Jarzmik <robert.jarzmik@free.fr>
Cc: Russell King <linux@arm.linux.org.uk>
Cc: Alessandro Zummo <a.zummo@towertech.it>
Cc: Alexandre Belloni <alexandre.belloni@free-electrons.com>
Cc: rtc-linux@googlegroups.com
Signed-off-by: Alexandre Belloni <alexandre.belloni@free-electrons.com>
-rw-r--r-- | drivers/rtc/rtc-sa1100.c | 59 | ||||
-rw-r--r-- | drivers/rtc/rtc-sa1100.h | 19 |
2 files changed, 49 insertions, 29 deletions
diff --git a/drivers/rtc/rtc-sa1100.c b/drivers/rtc/rtc-sa1100.c index b6e1ca0..abc19ab 100644 --- a/drivers/rtc/rtc-sa1100.c +++ b/drivers/rtc/rtc-sa1100.c @@ -42,17 +42,12 @@ #include <mach/regs-rtc.h> #endif +#include "rtc-sa1100.h" + #define RTC_DEF_DIVIDER (32768 - 1) #define RTC_DEF_TRIM 0 #define RTC_FREQ 1024 -struct sa1100_rtc { - spinlock_t lock; - int irq_1hz; - int irq_alarm; - struct rtc_device *rtc; - struct clk *clk; -}; static irqreturn_t sa1100_rtc_interrupt(int irq, void *dev_id) { @@ -223,29 +218,18 @@ static const struct rtc_class_ops sa1100_rtc_ops = { .alarm_irq_enable = sa1100_rtc_alarm_irq_enable, }; -static int sa1100_rtc_probe(struct platform_device *pdev) +int sa1100_rtc_init(struct platform_device *pdev, struct sa1100_rtc *info) { struct rtc_device *rtc; - struct sa1100_rtc *info; - int irq_1hz, irq_alarm, ret = 0; + int ret; - irq_1hz = platform_get_irq_byname(pdev, "rtc 1Hz"); - irq_alarm = platform_get_irq_byname(pdev, "rtc alarm"); - if (irq_1hz < 0 || irq_alarm < 0) - return -ENODEV; + spin_lock_init(&info->lock); - info = devm_kzalloc(&pdev->dev, sizeof(struct sa1100_rtc), GFP_KERNEL); - if (!info) - return -ENOMEM; info->clk = devm_clk_get(&pdev->dev, NULL); if (IS_ERR(info->clk)) { dev_err(&pdev->dev, "failed to find rtc clock source\n"); return PTR_ERR(info->clk); } - info->irq_1hz = irq_1hz; - info->irq_alarm = irq_alarm; - spin_lock_init(&info->lock); - platform_set_drvdata(pdev, info); ret = clk_prepare_enable(info->clk); if (ret) @@ -265,14 +249,11 @@ static int sa1100_rtc_probe(struct platform_device *pdev) RCNR = 0; } - device_init_wakeup(&pdev->dev, 1); - rtc = devm_rtc_device_register(&pdev->dev, pdev->name, &sa1100_rtc_ops, THIS_MODULE); - if (IS_ERR(rtc)) { - ret = PTR_ERR(rtc); - goto err_dev; + clk_disable_unprepare(info->clk); + return PTR_ERR(rtc); } info->rtc = rtc; @@ -301,9 +282,29 @@ static int sa1100_rtc_probe(struct platform_device *pdev) RTSR = RTSR_AL | RTSR_HZ; return 0; -err_dev: - clk_disable_unprepare(info->clk); - return ret; +} +EXPORT_SYMBOL_GPL(sa1100_rtc_init); + +static int sa1100_rtc_probe(struct platform_device *pdev) +{ + struct sa1100_rtc *info; + int irq_1hz, irq_alarm; + + irq_1hz = platform_get_irq_byname(pdev, "rtc 1Hz"); + irq_alarm = platform_get_irq_byname(pdev, "rtc alarm"); + if (irq_1hz < 0 || irq_alarm < 0) + return -ENODEV; + + info = devm_kzalloc(&pdev->dev, sizeof(struct sa1100_rtc), GFP_KERNEL); + if (!info) + return -ENOMEM; + info->irq_1hz = irq_1hz; + info->irq_alarm = irq_alarm; + + platform_set_drvdata(pdev, info); + device_init_wakeup(&pdev->dev, 1); + + return sa1100_rtc_init(pdev, info); } static int sa1100_rtc_remove(struct platform_device *pdev) diff --git a/drivers/rtc/rtc-sa1100.h b/drivers/rtc/rtc-sa1100.h new file mode 100644 index 0000000..665d054 --- /dev/null +++ b/drivers/rtc/rtc-sa1100.h @@ -0,0 +1,19 @@ +#ifndef __RTC_SA1100_H__ +#define __RTC_SA1100_H__ + +#include <linux/kernel.h> + +struct clk; +struct platform_device; + +struct sa1100_rtc { + spinlock_t lock; + int irq_1hz; + int irq_alarm; + struct rtc_device *rtc; + struct clk *clk; +}; + +int sa1100_rtc_init(struct platform_device *pdev, struct sa1100_rtc *info); + +#endif |