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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 rtc: struct device: replace bus_id with dev_name(), dev_set_name() 2009-01-06 15:59:23 -08:00
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: bunch of drivers: fix 'no irq' case handing 2009-01-06 15:59:23 -08:00
rtc-at91rm9200.c rtc: at91rm9200 fixes 2009-09-23 07:39:46 -07:00
rtc-at91sam9.c rtc: struct device - replace bus_id with dev_name(), dev_set_name() 2009-03-24 16:38:22 -07:00
rtc-au1xxx.c rtc: t reaches -1, tested 0 2009-02-11 14:25:36 -08:00
rtc-bfin.c rtc-bfin: do not share RTC IRQ 2009-09-23 07:39:45 -07:00
rtc-bq4802.c drivers/rtc/rtc-bq4802.c: don't use BIN_2_BCD and BCD_2_BIN 2008-10-20 08:52:41 -07:00
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: rtc-dm355evm driver 2009-02-05 12:56:46 -08:00
rtc-ds1216.c rtc: rtc-ds1216 fixes 2009-01-06 15:59:25 -08:00
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 Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/jikos/trivial 2009-01-07 11:31:52 -08:00
rtc-ds1553.c rtc-ds1553: drop IRQF_SHARED 2009-06-18 13:03:43 -07:00
rtc-ds1672.c rtc: use set_mmss when set_time is not available 2009-01-06 15:59:25 -08:00
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: add platform driver for EFI 2009-04-01 08:59:24 -07:00
rtc-ep93xx.c drivers/rtc: introduce missing kfree 2009-09-23 07:39:45 -07:00
rtc-fm3130.c drivers/rtc/: use bcd2bin/bin2bcd 2008-10-20 08:52:41 -07:00
rtc-generic.c parisc: rtc: Rename rtc-parisc to rtc-generic 2009-04-02 01:05:31 +00:00
rtc-isl1208.c rtc: rtc-isl1208: reject invalid dates 2008-12-23 15:58:21 -08:00
rtc-lib.c rtc: convert LEAP_YEAR into an inline 2009-04-01 08:59:24 -07:00
rtc-m41t80.c rtc: add m41t62 support to rtc-m41t80 driver 2009-04-02 19:04:51 -07:00
rtc-m41t94.c spi: prefix modalias with "spi:" 2009-09-23 07:39:43 -07:00
rtc-m48t35.c
rtc-m48t59.c rtc: bunch of drivers: fix 'no irq' case handing 2009-01-06 15:59:23 -08:00
rtc-m48t86.c drivers/rtc/: use bcd2bin/bin2bcd 2008-10-20 08:52:41 -07:00
rtc-max6900.c rtc: fix missing id_table in rtc-ds1672 and rtc-max6900 drivers 2008-12-10 08:01:52 -08:00
rtc-max6902.c spi: prefix modalias with "spi:" 2009-09-23 07:39:43 -07:00
rtc-mv.c [ARM] Kirkwood: fail the probe if internal RTC does not work 2009-03-24 09:11:39 -04:00
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 drivers/rtc/: use bcd2bin/bin2bcd 2008-10-20 08:52:41 -07:00
rtc-pcf8583.c drivers/rtc/: use bcd2bin/bin2bcd 2008-10-20 08:52:41 -07:00
rtc-pcf50633.c rtc: PCF50633 rtc driver 2009-01-11 01:34:24 +01:00
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 proc 2/2: remove struct proc_dir_entry::owner 2009-03-31 01:14:44 +04:00
rtc-ps3.c powerpc/ps3: Add rtc-ps3 2009-04-02 01:05:32 +00:00
rtc-pxa.c rtc: update maintainership of pxa rtc driver 2009-02-11 14:25:34 -08:00
rtc-r9701.c spi: prefix modalias with "spi:" 2009-09-23 07:39:43 -07:00
rtc-rs5c313.c drivers/rtc/: use bcd2bin/bin2bcd 2008-10-20 08:52:41 -07:00
rtc-rs5c348.c spi: prefix modalias with "spi:" 2009-09-23 07:39:43 -07:00
rtc-rs5c372.c drivers/rtc/: use bcd2bin/bin2bcd 2008-10-20 08:52:41 -07:00
rtc-rx8025.c rtc: add stand-alone driver for RX8025 chip 2009-06-18 13:03:43 -07:00
rtc-rx8581.c rtc: basic implementation of Epson RX-8581 I2C Real Time Clock 2008-11-12 17:17:18 -08:00
rtc-s3c.c rtc: move power of 2 periodic frequency check down into drivers 2009-01-06 15:59:24 -08:00
rtc-s35390a.c drivers/rtc/: use bcd2bin/bin2bcd 2008-10-20 08:52:41 -07:00
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: rtc-starfire fixes 2008-11-21 01:24:38 -08:00
rtc-stk17ta8.c Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/jikos/trivial 2009-01-07 11:31:52 -08:00
rtc-stmp3xxx.c rtc: add Freescale stmp37xx/378x driver 2009-09-23 07:39:45 -07:00
rtc-sun4v.c rtc: rtc-sun4v fixes, revised 2008-11-14 16:37:54 -08:00
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-v3020: add ability to access v3020 chip with GPIOs 2009-04-02 19:04:51 -07:00
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-wm8350: retries will reach -1 2009-04-01 08:59:26 -07:00
rtc-x1205.c drivers/rtc/: use bcd2bin/bin2bcd 2008-10-20 08:52:41 -07:00