diff options
author | David Brownell <david-b@pacbell.net> | 2007-05-08 00:33:30 -0700 |
---|---|---|
committer | Linus Torvalds <torvalds@woody.linux-foundation.org> | 2007-05-08 11:15:18 -0700 |
commit | ab6a2d70d18edc7a716ef3127b9e13382faec98c (patch) | |
tree | 6de624dfcbd0181e54e21f1730d2a52ae9822c47 /drivers/rtc/interface.c | |
parent | 5726fb2012f0d96153113ddb7f988a0daea587ce (diff) |
rtc: rtc interfaces don't use class_device
This patch removes class_device from the programming interface that the RTC
framework exposes to the rest of the kernel. Now an rtc_device is passed,
which is more type-safe and streamlines all the relevant code.
Signed-off-by: David Brownell <dbrownell@users.sourceforge.net>
Acked-by: Greg Kroah-Hartman <gregkh@suse.de>
Acked-By: Alessandro Zummo <a.zummo@towertech.it>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Diffstat (limited to 'drivers/rtc/interface.c')
-rw-r--r-- | drivers/rtc/interface.c | 78 |
1 files changed, 36 insertions, 42 deletions
diff --git a/drivers/rtc/interface.c b/drivers/rtc/interface.c index ef40df0f169d..d9d326ff6253 100644 --- a/drivers/rtc/interface.c +++ b/drivers/rtc/interface.c @@ -13,10 +13,9 @@ #include <linux/rtc.h> -int rtc_read_time(struct class_device *class_dev, struct rtc_time *tm) +int rtc_read_time(struct rtc_device *rtc, struct rtc_time *tm) { int err; - struct rtc_device *rtc = to_rtc_device(class_dev); err = mutex_lock_interruptible(&rtc->ops_lock); if (err) @@ -28,7 +27,7 @@ int rtc_read_time(struct class_device *class_dev, struct rtc_time *tm) err = -EINVAL; else { memset(tm, 0, sizeof(struct rtc_time)); - err = rtc->ops->read_time(class_dev->dev, tm); + err = rtc->ops->read_time(rtc->class_dev.dev, tm); } mutex_unlock(&rtc->ops_lock); @@ -36,10 +35,9 @@ int rtc_read_time(struct class_device *class_dev, struct rtc_time *tm) } EXPORT_SYMBOL_GPL(rtc_read_time); -int rtc_set_time(struct class_device *class_dev, struct rtc_time *tm) +int rtc_set_time(struct rtc_device *rtc, struct rtc_time *tm) { int err; - struct rtc_device *rtc = to_rtc_device(class_dev); err = rtc_valid_tm(tm); if (err != 0) @@ -54,17 +52,16 @@ int rtc_set_time(struct class_device *class_dev, struct rtc_time *tm) else if (!rtc->ops->set_time) err = -EINVAL; else - err = rtc->ops->set_time(class_dev->dev, tm); + err = rtc->ops->set_time(rtc->class_dev.dev, tm); mutex_unlock(&rtc->ops_lock); return err; } EXPORT_SYMBOL_GPL(rtc_set_time); -int rtc_set_mmss(struct class_device *class_dev, unsigned long secs) +int rtc_set_mmss(struct rtc_device *rtc, unsigned long secs) { int err; - struct rtc_device *rtc = to_rtc_device(class_dev); err = mutex_lock_interruptible(&rtc->ops_lock); if (err) @@ -73,11 +70,11 @@ int rtc_set_mmss(struct class_device *class_dev, unsigned long secs) if (!rtc->ops) err = -ENODEV; else if (rtc->ops->set_mmss) - err = rtc->ops->set_mmss(class_dev->dev, secs); + err = rtc->ops->set_mmss(rtc->class_dev.dev, secs); else if (rtc->ops->read_time && rtc->ops->set_time) { struct rtc_time new, old; - err = rtc->ops->read_time(class_dev->dev, &old); + err = rtc->ops->read_time(rtc->class_dev.dev, &old); if (err == 0) { rtc_time_to_tm(secs, &new); @@ -89,7 +86,8 @@ int rtc_set_mmss(struct class_device *class_dev, unsigned long secs) */ if (!((old.tm_hour == 23 && old.tm_min == 59) || (new.tm_hour == 23 && new.tm_min == 59))) - err = rtc->ops->set_time(class_dev->dev, &new); + err = rtc->ops->set_time(rtc->class_dev.dev, + &new); } } else @@ -101,10 +99,9 @@ int rtc_set_mmss(struct class_device *class_dev, unsigned long secs) } EXPORT_SYMBOL_GPL(rtc_set_mmss); -int rtc_read_alarm(struct class_device *class_dev, struct rtc_wkalrm *alarm) +int rtc_read_alarm(struct rtc_device *rtc, struct rtc_wkalrm *alarm) { int err; - struct rtc_device *rtc = to_rtc_device(class_dev); err = mutex_lock_interruptible(&rtc->ops_lock); if (err) @@ -116,7 +113,7 @@ int rtc_read_alarm(struct class_device *class_dev, struct rtc_wkalrm *alarm) err = -EINVAL; else { memset(alarm, 0, sizeof(struct rtc_wkalrm)); - err = rtc->ops->read_alarm(class_dev->dev, alarm); + err = rtc->ops->read_alarm(rtc->class_dev.dev, alarm); } mutex_unlock(&rtc->ops_lock); @@ -124,10 +121,9 @@ int rtc_read_alarm(struct class_device *class_dev, struct rtc_wkalrm *alarm) } EXPORT_SYMBOL_GPL(rtc_read_alarm); -int rtc_set_alarm(struct class_device *class_dev, struct rtc_wkalrm *alarm) +int rtc_set_alarm(struct rtc_device *rtc, struct rtc_wkalrm *alarm) { int err; - struct rtc_device *rtc = to_rtc_device(class_dev); err = mutex_lock_interruptible(&rtc->ops_lock); if (err) @@ -138,7 +134,7 @@ int rtc_set_alarm(struct class_device *class_dev, struct rtc_wkalrm *alarm) else if (!rtc->ops->set_alarm) err = -EINVAL; else - err = rtc->ops->set_alarm(class_dev->dev, alarm); + err = rtc->ops->set_alarm(rtc->class_dev.dev, alarm); mutex_unlock(&rtc->ops_lock); return err; @@ -147,16 +143,14 @@ EXPORT_SYMBOL_GPL(rtc_set_alarm); /** * rtc_update_irq - report RTC periodic, alarm, and/or update irqs - * @class_dev: the rtc's class device + * @rtc: the rtc device * @num: how many irqs are being reported (usually one) * @events: mask of RTC_IRQF with one or more of RTC_PF, RTC_AF, RTC_UF * Context: in_interrupt(), irqs blocked */ -void rtc_update_irq(struct class_device *class_dev, +void rtc_update_irq(struct rtc_device *rtc, unsigned long num, unsigned long events) { - struct rtc_device *rtc = to_rtc_device(class_dev); - spin_lock(&rtc->irq_lock); rtc->irq_data = (rtc->irq_data + (num << 8)) | events; spin_unlock(&rtc->irq_lock); @@ -171,40 +165,43 @@ void rtc_update_irq(struct class_device *class_dev, } EXPORT_SYMBOL_GPL(rtc_update_irq); -struct class_device *rtc_class_open(char *name) +struct rtc_device *rtc_class_open(char *name) { - struct class_device *class_dev = NULL, - *class_dev_tmp; + struct class_device *class_dev_tmp; + struct rtc_device *rtc = NULL; down(&rtc_class->sem); list_for_each_entry(class_dev_tmp, &rtc_class->children, node) { if (strncmp(class_dev_tmp->class_id, name, BUS_ID_SIZE) == 0) { - class_dev = class_device_get(class_dev_tmp); + class_dev_tmp = class_device_get(class_dev_tmp); + if (class_dev_tmp) + rtc = to_rtc_device(class_dev_tmp); break; } } - if (class_dev) { - if (!try_module_get(to_rtc_device(class_dev)->owner)) - class_dev = NULL; + if (rtc) { + if (!try_module_get(rtc->owner)) { + class_device_put(class_dev_tmp); + rtc = NULL; + } } up(&rtc_class->sem); - return class_dev; + return rtc; } EXPORT_SYMBOL_GPL(rtc_class_open); -void rtc_class_close(struct class_device *class_dev) +void rtc_class_close(struct rtc_device *rtc) { - module_put(to_rtc_device(class_dev)->owner); - class_device_put(class_dev); + module_put(rtc->owner); + class_device_put(&rtc->class_dev); } EXPORT_SYMBOL_GPL(rtc_class_close); -int rtc_irq_register(struct class_device *class_dev, struct rtc_task *task) +int rtc_irq_register(struct rtc_device *rtc, struct rtc_task *task) { int retval = -EBUSY; - struct rtc_device *rtc = to_rtc_device(class_dev); if (task == NULL || task->func == NULL) return -EINVAL; @@ -220,9 +217,8 @@ int rtc_irq_register(struct class_device *class_dev, struct rtc_task *task) } EXPORT_SYMBOL_GPL(rtc_irq_register); -void rtc_irq_unregister(struct class_device *class_dev, struct rtc_task *task) +void rtc_irq_unregister(struct rtc_device *rtc, struct rtc_task *task) { - struct rtc_device *rtc = to_rtc_device(class_dev); spin_lock_irq(&rtc->irq_task_lock); if (rtc->irq_task == task) @@ -231,11 +227,10 @@ void rtc_irq_unregister(struct class_device *class_dev, struct rtc_task *task) } EXPORT_SYMBOL_GPL(rtc_irq_unregister); -int rtc_irq_set_state(struct class_device *class_dev, struct rtc_task *task, int enabled) +int rtc_irq_set_state(struct rtc_device *rtc, struct rtc_task *task, int enabled) { int err = 0; unsigned long flags; - struct rtc_device *rtc = to_rtc_device(class_dev); if (rtc->ops->irq_set_state == NULL) return -ENXIO; @@ -246,17 +241,16 @@ int rtc_irq_set_state(struct class_device *class_dev, struct rtc_task *task, int spin_unlock_irqrestore(&rtc->irq_task_lock, flags); if (err == 0) - err = rtc->ops->irq_set_state(class_dev->dev, enabled); + err = rtc->ops->irq_set_state(rtc->class_dev.dev, enabled); return err; } EXPORT_SYMBOL_GPL(rtc_irq_set_state); -int rtc_irq_set_freq(struct class_device *class_dev, struct rtc_task *task, int freq) +int rtc_irq_set_freq(struct rtc_device *rtc, struct rtc_task *task, int freq) { int err = 0; unsigned long flags; - struct rtc_device *rtc = to_rtc_device(class_dev); if (rtc->ops->irq_set_freq == NULL) return -ENXIO; @@ -267,7 +261,7 @@ int rtc_irq_set_freq(struct class_device *class_dev, struct rtc_task *task, int spin_unlock_irqrestore(&rtc->irq_task_lock, flags); if (err == 0) { - err = rtc->ops->irq_set_freq(class_dev->dev, freq); + err = rtc->ops->irq_set_freq(rtc->class_dev.dev, freq); if (err == 0) rtc->irq_freq = freq; } |