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linux-hardened/drivers/rtc
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Mark Brown 35c86bf66d rtc: Add support for RTCs on Wolfson WM831x devices 
The WM831x series of PMICs contain RTC functionality. The hardware
provides a 32 bit counter incrementing at 1Hz together with a per
tick interrupt and an alarm value. For simplicity the driver chooses
to define the epoch for the counter as the Unix epoch - if required
platform data can be used in future to customise this.

When powered on from a completely cold state the RTC reports that it
has not been configured - when this happens an error is returned
when attempting to read the RTC in order to avoid use of values we
know to be invalid.

The hardware also provides security features which mean that it can
ignore attempts to set the RTC time in certain circumstances, most
notably if the RTC is written to too often. These errors are detected
by verifying the written RTC value.

Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
Acked-by: Alessandro Zummo <a.zummo@towertech.it>
Signed-off-by: Samuel Ortiz <sameo@linux.intel.com>
2009-09-17 09:47:13 +02:00
..
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: Add support for RTCs on Wolfson WM831x devices 2009-09-17 09:47:13 +02:00
Makefile rtc: Add support for RTCs on Wolfson WM831x devices 2009-09-17 09:47:13 +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 drivers/rtc/: use bcd2bin/bin2bcd 2008-10-20 08:52:41 -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 bfin: delay IRQ registration until driver is ready 2009-06-30 18:56:01 -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-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: rtc-ds1286 and rtc-m48t35 need <linux/io.h> 2008-10-16 11:32:38 -07:00
rtc-ds1302.c Merge git://git.kernel.org/pub/scm/linux/kernel/git/lethal/sh-2.6 2008-10-20 09:13:34 -07:00
rtc-ds1305.c rtc: make rtc_update_irq callable with irqs enabled 2009-06-19 16:46:05 -07:00
rtc-ds1307.c rtc: make rtc_update_irq callable with irqs enabled 2009-06-19 16:46:05 -07:00
rtc-ds1374.c rtc: ds1374, fix lock imbalance 2009-07-06 13:57:03 -07:00
rtc-ds1390.c rtc-ds1390: fix compilation warnings in drivers/rtc/rtc-ds1390.c 2009-02-05 12:56:48 -08:00
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 rtc: rtc-ds3234 fixes 2009-01-06 15:59:24 -08:00
rtc-efi.c rtc: add platform driver for EFI 2009-04-01 08:59:24 -07:00
rtc-ep93xx.c [ARM] 5452/1: ep93x: rtc: use ioremap'ed addresses 2009-04-26 13:57:29 +01:00
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 drivers/rtc/: use bcd2bin/bin2bcd 2008-10-20 08:52:41 -07:00
rtc-m48t35.c rtc: rtc-ds1286 and rtc-m48t35 need <linux/io.h> 2008-10-16 11:32:38 -07:00
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 rtc: rtc-max6902 fixes 2009-01-06 15:59:24 -08:00
rtc-mv.c [ARM] Kirkwood: fail the probe if internal RTC does not work 2009-03-24 09:11:39 -04:00
rtc-omap.c rtc: struct device - replace bus_id with dev_name(), dev_set_name() 2009-03-24 16:38:22 -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 drivers/rtc/: use bcd2bin/bin2bcd 2008-10-20 08:52:41 -07:00
rtc-rs5c313.c drivers/rtc/: use bcd2bin/bin2bcd 2008-10-20 08:52:41 -07:00
rtc-rs5c348.c drivers/rtc/: use bcd2bin/bin2bcd 2008-10-20 08:52:41 -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: clock framework support. 2009-04-16 14:12:22 +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-sun4v.c rtc: rtc-sun4v fixes, revised 2008-11-14 16:37:54 -08:00
rtc-sysfs.c rtc: add the support for alarm time relative to current time in sysfs 2008-04-28 08:58:17 -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