diff options
| author | Russ Dill <Russ.Dill@ti.com> | 2014-08-26 11:13:22 +0530 |
|---|---|---|
| committer | Tero Kristo <t-kristo@ti.com> | 2014-09-01 10:55:10 +0300 |
| commit | f1afc4828f47033d82bf49c8e9941e2e10d9f35a (patch) | |
| tree | 073190f19ed6f606a21862f68eea881696e5a11a /include | |
| parent | 0b235d848008d12da1012dad93c9c49e94472f19 (diff) | |
RTC: Add functionality to read/write rtc scratch registers.
Many RTCs provide scratch registers that are maintained so long as the RTC
has power. Provide a generic method to access these registers.
Signed-off-by: Russ Dill <Russ.Dill@ti.com>
[j-keerthy@ti.com] ported to 3.14
Signed-off-by: Keerthy <j-keerthy@ti.com>
Diffstat (limited to 'include')
| -rw-r--r-- | include/linux/rtc.h | 7 |
1 files changed, 7 insertions, 0 deletions
diff --git a/include/linux/rtc.h b/include/linux/rtc.h index c2c28975293..4be0268fd38 100644 --- a/include/linux/rtc.h +++ b/include/linux/rtc.h @@ -63,6 +63,10 @@ struct rtc_class_ops { int (*set_mmss)(struct device *, unsigned long secs); int (*read_callback)(struct device *, int data); int (*alarm_irq_enable)(struct device *, unsigned int enabled); + int (*read_scratch)(struct device *, unsigned int, u32*); + int (*write_scratch)(struct device *, unsigned int, u32); + + unsigned int scratch_size; }; #define RTC_DEVICE_NAME_SIZE 20 @@ -186,6 +190,9 @@ int rtc_timer_start(struct rtc_device *rtc, struct rtc_timer* timer, int rtc_timer_cancel(struct rtc_device *rtc, struct rtc_timer* timer); void rtc_timer_do_work(struct work_struct *work); +int rtc_read_scratch(struct rtc_device *rtc, unsigned index, u32 *value); +int rtc_write_scratch(struct rtc_device *rtc, unsigned index, u32 value); + static inline bool is_leap_year(unsigned int year) { return (!(year % 4) && (year % 100)) || !(year % 400); |