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linux/drivers/rtc
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Matthew Garrett d8c1acb166 rtc: add boot_timesource sysfs attribute 
CONFIG_RTC_HCTOSYS allows the kernel to read the system time from the RTC
at boot and resume, avoiding the need for userspace to do so.
Unfortunately userspace currently has no way to know whether this
configuration option is enabled and thus cannot sensibly choose whether to
run hwclock itself or not.  Add a hctosys sysfs attribute which indicates
whether a given RTC set the system clock.

Signed-off-by: Matthew Garrett <mjg@redhat.com>
Acked-by: Alessandro Zummo <a.zummo@towertech.it>
Cc: Mark Brown <broonie@opensource.wolfsonmicro.com>
Cc: David Brownell <david-b@pacbell.net>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2009-09-23 07:39:46 -07:00
..
class.c
hctosys.c
interface.c rtc: make rtc_update_irq callable with irqs enabled 2009-06-19 16:46:05 -07:00
Kconfig rtc: driver for PCAP2 PMIC 2009-09-23 07:39:45 -07:00
Makefile rtc: driver for PCAP2 PMIC 2009-09-23 07:39:45 -07:00
rtc-ab3100.c rtc: AB3100 RTC support 2009-09-17 09:47:24 +02:00
rtc-at32ap700x.c
rtc-at91rm9200.c rtc: at91rm9200 fixes 2009-09-23 07:39:46 -07:00
rtc-at91sam9.c
rtc-au1xxx.c
rtc-bfin.c rtc-bfin: do not share RTC IRQ 2009-09-23 07:39:45 -07:00
rtc-bq4802.c
rtc-cmos.c rtc: mark if rtc-cmos drivers were successfully registered 2009-07-29 19:10:35 -07:00
rtc-coh901331.c rtc: U300 COH 901 331 RTC driver v3 2009-09-23 07:39:45 -07:00
rtc-core.h
rtc-dev.c rtc: make rtc_update_irq callable with irqs enabled 2009-06-19 16:46:05 -07:00
rtc-dm355evm.c
rtc-ds1216.c
rtc-ds1286.c
rtc-ds1302.c rtc: rtc-ds1302: Kill off unused variables. 2009-08-20 15:06:04 +09:00
rtc-ds1305.c spi: prefix modalias with "spi:" 2009-09-23 07:39:43 -07:00
rtc-ds1307.c drivers/rtc: correct error-handling code 2009-09-23 07:39:45 -07:00
rtc-ds1374.c rtc: ds1374, fix lock imbalance 2009-07-06 13:57:03 -07:00
rtc-ds1390.c spi: prefix modalias with "spi:" 2009-09-23 07:39:43 -07:00
rtc-ds1511.c
rtc-ds1553.c rtc-ds1553: drop IRQF_SHARED 2009-06-18 13:03:43 -07:00
rtc-ds1672.c
rtc-ds1742.c rtc: rtc-ds1742 nvram attribute fix 2009-06-18 13:03:43 -07:00
rtc-ds3234.c spi: prefix modalias with "spi:" 2009-09-23 07:39:43 -07:00
rtc-efi.c
rtc-ep93xx.c drivers/rtc: introduce missing kfree 2009-09-23 07:39:45 -07:00
rtc-fm3130.c
rtc-generic.c
rtc-isl1208.c
rtc-lib.c
rtc-m41t80.c
rtc-m41t94.c spi: prefix modalias with "spi:" 2009-09-23 07:39:43 -07:00
rtc-m48t35.c
rtc-m48t59.c
rtc-m48t86.c
rtc-max6900.c
rtc-max6902.c spi: prefix modalias with "spi:" 2009-09-23 07:39:43 -07:00
rtc-mv.c
rtc-mxc.c rtc: add driver for MXC's internal RTC module 2009-09-23 07:39:45 -07:00
rtc-omap.c trivial: remove unnecessary semicolons 2009-09-21 15:14:58 +02:00
rtc-pcap.c rtc: driver for PCAP2 PMIC 2009-09-23 07:39:45 -07:00
rtc-pcf2123.c rtc-philips-pcf2123-rtc-spi-driver-updates 2009-09-23 07:39:45 -07:00
rtc-pcf8563.c
rtc-pcf8583.c
rtc-pcf50633.c
rtc-pl030.c [ARM] 5544/1: Trust PrimeCell resource sizes 2009-06-11 15:36:56 +01:00
rtc-pl031.c [ARM] 5544/1: Trust PrimeCell resource sizes 2009-06-11 15:36:56 +01:00
rtc-proc.c
rtc-ps3.c
rtc-pxa.c
rtc-r9701.c spi: prefix modalias with "spi:" 2009-09-23 07:39:43 -07:00
rtc-rs5c313.c
rtc-rs5c348.c spi: prefix modalias with "spi:" 2009-09-23 07:39:43 -07:00
rtc-rs5c372.c
rtc-rx8025.c rtc: add stand-alone driver for RX8025 chip 2009-06-18 13:03:43 -07:00
rtc-rx8581.c
rtc-s3c.c
rtc-s35390a.c
rtc-sa1100.c Nicolas Pitre has a new email address 2009-09-15 09:37:12 -07:00
rtc-sh.c rtc: rtc-sh: Fix up oops in early periodic freq assignment. 2009-09-09 12:13:01 +09:00
rtc-starfire.c
rtc-stk17ta8.c
rtc-stmp3xxx.c rtc: add Freescale stmp37xx/378x driver 2009-09-23 07:39:45 -07:00
rtc-sun4v.c
rtc-sysfs.c rtc: add boot_timesource sysfs attribute 2009-09-23 07:39:46 -07:00
rtc-test.c rtc: make rtc_update_irq callable with irqs enabled 2009-06-19 16:46:05 -07:00
rtc-twl4030.c rtc: rtc-twl4030 don't mask alarm interrupts on suspend 2009-05-12 14:11:35 -07:00
rtc-tx4939.c rtc-tx4939: drop IRQF_SHARED 2009-06-18 13:03:43 -07:00
rtc-v3020.c
rtc-vr41xx.c Update Yoichi Yuasa's e-mail address 2009-07-03 15:45:29 +01:00
rtc-wm831x.c rtc: Add support for RTCs on Wolfson WM831x devices 2009-09-17 09:47:13 +02:00
rtc-wm8350.c
rtc-x1205.c