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Michael Hamel 471d47e322 rtc-x1205: Fix alarm set ... I have discovered that the current version of rtc-x1205.c does not work correctly when asked to set the alarm time by the RTC_WKALM_SET ioctl() call. This happens because the alarm registers do not behave like the current-time registers. They are non-volatile. Two things go wrong: - the X1205 requires a 10 msec delay after any attempt to write to the non-volatile registers. The x1205_set_datetime() routine does the write as 8 single-byte writes without any delay. Only the first write succeeds. The second is NAKed because the chip is busy. - the X1205 resets the RWEL bit after any write to the non-volatile registers. This would lock out any further writes after the first even with a 10msec delay. I fix this by doing a single 8-byte write and then waiting 10msec for the chip to be ready. A side effect of this change is that it will speed up x1205_rtc_set_time() which uses the same code. I have also implemented the 'enable' bit in the rtc_wkalm structure, which the existing driver does not attempt to do. I have modified both x1205_rtc_set_alarm() to set the AL0E bit, and x1205_rtc_read_alarm() to return it. I have tested this patch on a LinkSys NSLU2 under OpenWRT, but on no other hardware. On the NSLU2 the X1205 correctly asserts its IRQ pin when the alarm time matches the current time. [akpm@linux-foundation.org: clean up over-parenthesisation] Signed-off-by: Michael Hamel <mhamel@adi.co.nz> Signed-off-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>		17 years ago
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Kconfig	rtc: Ramtron FM3130 RTC support	17 years ago
Makefile	rtc: Ramtron FM3130 RTC support	17 years ago
class.c	RTC: periodic irq fix	18 years ago
hctosys.c	rtc_hctosys expects RTCs in UTC (doc)	17 years ago
interface.c	rtc: rtc_read_alarm() handles wraparound	17 years ago
rtc-at32ap700x.c	rtc-at32ap700x: fix bug in at32_rtc_readalarm()	17 years ago
rtc-at91rm9200.c	rtc: replace remaining __FUNCTION__ occurrences	17 years ago
rtc-at91sam9.c	rtc: replace remaining __FUNCTION__ occurrences	17 years ago
rtc-bfin.c	Remove duplicated unlikely() in IS_ERR()	17 years ago
rtc-cmos.c	provide rtc_cmos platform device	17 years ago
rtc-core.h	rtc: update to class device removal patches	18 years ago
rtc-dev.c	rtc-cmos alarm acts as oneshot	17 years ago
rtc-ds1216.c	rtc: fix platform driver hotplug/coldplug	17 years ago
rtc-ds1302.c	rtc: replace remaining __FUNCTION__ occurrences	17 years ago
rtc-ds1307.c	i2c: Convert most new-style drivers to use module aliasing	17 years ago
rtc-ds1374.c	rtc-ds1374: rename device to just "ds1374"	17 years ago
rtc-ds1511.c	fix irq flags in rtc-ds1511	17 years ago
rtc-ds1553.c	rtc: fix platform driver hotplug/coldplug	17 years ago
rtc-ds1672.c	rtc: replace remaining __FUNCTION__ occurrences	17 years ago
rtc-ds1742.c	rtc: fix platform driver hotplug/coldplug	17 years ago
rtc-ep93xx.c	rtc: fix platform driver hotplug/coldplug	17 years ago
rtc-fm3130.c	rtc: Ramtron FM3130 RTC support	17 years ago
rtc-isl1208.c	i2c: Convert most new-style drivers to use module aliasing	17 years ago
rtc-lib.c	rtc: rtc_time_to_tm: use unsigned arithmetic	17 years ago
rtc-m41t80.c	rtc: m41t80: include <linux/kernel.h> for printk()	17 years ago
rtc-m48t59.c	rtc: fix platform driver hotplug/coldplug	17 years ago
rtc-m48t86.c	rtc: fix platform driver hotplug/coldplug	17 years ago
rtc-max6900.c	rtc: replace remaining __FUNCTION__ occurrences	17 years ago
rtc-max6902.c	rtc: replace remaining __FUNCTION__ occurrences	17 years ago
rtc-omap.c	rtc: fix platform driver hotplug/coldplug	17 years ago
rtc-pcf8563.c	i2c: Convert most new-style drivers to use module aliasing	17 years ago
rtc-pcf8583.c	rtc-pcf8583 build fix	17 years ago
rtc-pl031.c	remove asm/bitops.h includes	18 years ago
rtc-ppc.c	rtc: class driver for ppc_md RTC functions	17 years ago
rtc-proc.c	drivers: use non-racy method for proc entries creation (2)	17 years ago
rtc-r9701.c	rtc-r9701.c: silence compiler warning	17 years ago
rtc-rs5c313.c	rtc: replace remaining __FUNCTION__ occurrences	17 years ago
rtc-rs5c348.c	[PATCH] rtc: Make rtc-rs5c348 driver hotplug-aware	18 years ago
rtc-rs5c372.c	i2c: Convert most new-style drivers to use module aliasing	17 years ago
rtc-s3c.c	rtc: replace remaining __FUNCTION__ occurrences	17 years ago
rtc-s35390a.c	i2c: Match dummy devices by type	17 years ago
rtc-sa1100.c	[ARM] 5109/1: Mark rtc sa1100 driver as wakeup source before registering it	17 years ago
rtc-sh.c	rtc: rtc-sh: Fixup for 64-bit resources.	17 years ago
rtc-stk17ta8.c	rtc: fix platform driver hotplug/coldplug	17 years ago
rtc-sysfs.c	rtc: add the support for alarm time relative to current time in sysfs	17 years ago
rtc-test.c	rtc: silence section mismatch warning in rtc-test	17 years ago
rtc-v3020.c	rtc: replace remaining __FUNCTION__ occurrences	17 years ago
rtc-vr41xx.c	rtc: fix platform driver hotplug/coldplug	17 years ago
rtc-x1205.c	rtc-x1205: Fix alarm set	17 years ago