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path: root/drivers/rtc
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2009-12-08Merge branch 'for-linus' of ↵Linus Torvalds
git://git.kernel.org/pub/scm/linux/kernel/git/geert/linux-m68k * 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/geert/linux-m68k: m68k: parport_mfc3 - Not makes it a bool before the comparison. m68k: don't export static inline functions fbdev: atafb - add palette register check m68k: Remove the BKL from sys_execve m68k: Cleanup linker scripts using new linker script macros. m68k: Make thread_info.h usable from assembly. m68knommu: define arch_has_single_step() and friends m68k: ptrace fixes m68k: use generic code for ptrace requests rtc: Add an RTC driver for the Ricoh RP5C01 rtc: Add an RTC driver for the Oki MSM6242
2009-12-06Merge branch 'sa1100' into develRussell King
2009-12-04rtc: Add an RTC driver for the Ricoh RP5C01Geert Uytterhoeven
Signed-off-by: Geert Uytterhoeven <geert@linux-m68k.org> Acked-by: Alessandro Zummo <alessandro.zummo@towertech.it>
2009-12-04rtc: Add an RTC driver for the Oki MSM6242Geert Uytterhoeven
Signed-off-by: Geert Uytterhoeven <geert@linux-m68k.org> Acked-by: Alessandro Zummo <alessandro.zummo@towertech.it>
2009-12-01rtc-x1205: reset clock to sane state after power failureJohannes Weiner
When detecting power failure, the probe function would reset the clock time to defined state. However, the clock's _date_ might still be bogus and a subsequent probe fails when sanity-checking these values. Change the power-failure fixup code to do a full setting of rtc_time, including a valid date. Signed-off-by: Johannes Weiner <jw@emlix.com> Cc: Alessandro Zummo <a.zummo@towertech.it> Cc: Paul Gortmaker <p_gortmaker@yahoo.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2009-12-01rtc-x1205: fix rtc_time to y2k register value conversionJohannes Weiner
The possible CCR_Y2K register values are 19 or 20 and struct rtc_time's tm_year is in years since 1900. The function translating rtc_time to register values assumes tm_year to be years since first christmas, though, and we end up storing 0 or 1 in the CCR_Y2K register, which the hardware does not refuse to do. A subsequent probing of the clock fails due to the invalid value range in the register, though. [ And if it didn't, reading the clock would yield a bogus year because the function translating registers to tm_year is assuming a register value of 19 or 20. ] This fixes the conversion from years since 1900 in tm_year to the corresponding CCR_Y2K value of 19 or 20. Signed-off-by: Johannes Weiner <jw@emlix.com> Cc: Alessandro Zummo <a.zummo@towertech.it> Cc: Paul Gortmaker <p_gortmaker@yahoo.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2009-12-01drivers/rtc/rtc-pcf50633.c: fix use after free in pcf50633_rtc_probe()Dan Carpenter
"rtc" is freed and then dereferenced on the next line. This patch fixes that. Signed-off-by: Dan Carpenter <error27@gmail.com> Acked-by: Alessandro Zummo <a.zummo@towertech.it> Cc: David Brownell <david-b@pacbell.net> Cc: Paul Gortmaker <p_gortmaker@yahoo.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2009-12-01Merge branch 'for-rmk' of git://git.marvell.com/orion into devel-stableRussell King
2009-11-27RTC: let Dove soc select the rtc-mv driver.Saeed Bishara
Signed-off-by: Saeed Bishara <saeed@marvell.com> Signed-off-by: Nicolas Pitre <nico@marvell.com>
2009-11-16ARM: 5787/1: U300 COH 901 331 fixesLinus Walleij
This will fix some small issues with the COH 901 331 RTC driver: - Interrupt is disabled after alarm so that we don't fire multiple interrupts. - We return 0 from the coh901331_alarm_irq_enable() ridding a compile warning. - We alter the name in the U300 device registry to match that of the driver so they sucessfully resolve. Signed-off-by: Linus Walleij <linus.walleij@stericsson.com> Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
2009-11-12rtc: v3020: fix v3020_mmio_read_bit()Scott Valentine
v3020_mmio_read_bit() always returns 0 when left_shift > 7. v3020_mmio_read_bit()'s return type is (unsigned char). The code returns a value masked by (1 << left_shift) that is casted to the return type. If left_shift is larger than 7, the cast will always result in a 0 return value. The problem was discovered with left_shift = 16, and the included patch corrects the problem. The bug was introduced in the last (Apr 3 2009) commit of the file, kernel versions 2.6.30 and later. Cc: Alessandro Zummo <a.zummo@towertech.it> Cc: Paul Gortmaker <p_gortmaker@yahoo.com> Cc: Raphael Assenat <raph@8d.com> Cc: <stable@kernel.org> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2009-11-12rtc-vr41xx: fix do_div() warningYoichi Yuasa
drivers/rtc/rtc-vr41xx.c: In function 'vr41xx_rtc_irq_set_freq': drivers/rtc/rtc-vr41xx.c:217: warning: comparison of distinct pointer types lacks a cast drivers/rtc/rtc-vr41xx.c:217: warning: right shift count >= width of type drivers/rtc/rtc-vr41xx.c:217: warning: passing argument 1 of '__div64_32' from incompatible pointer type include/asm-generic/div64.h:35: note: expected 'uint64_t *' but argument is of type 'long unsigned int *' Signed-off-by: Yoichi Yuasa <yuasa@linux-mips.org> Cc: Alessandro Zummo <a.zummo@towertech.it> Cc: Paul Gortmaker <p_gortmaker@yahoo.com> Cc: Paul Mundt <lethal@linux-sh.org> Cc: David Brownell <dbrownell@users.sourceforge.net> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2009-11-12rtc: pcf50633: consider alrm->enable in pcf50633_rtc_set_alarmWerner Almesberger
According to Documentation/rtc.txt, RTC_WKALM_SET sets the alarm time and enables/disables the alarm. We implement RTC_WKALM_SET through pcf50633_rtc_set_alarm. The enabling/disabling part was missing. Signed-off-by: Werner Almesberger <werner@openmoko.org> Reported-by: Michael 'Mickey' Lauer <mickey@openmoko.org> Signed-off-by: Paul Fertser <fercerpav@gmail.com> Cc: Paul Gortmaker <p_gortmaker@yahoo.com> Cc: Balaji Rao <balajirrao@openmoko.org> Cc: Alessandro Zummo <a.zummo@towertech.it> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2009-11-12rtc: pcf50633: fix month off-by-one errorRask Ingemann Lambertsen
The PCF50633 stores a month value of 1-12, but the kernel wants 0-11. Signed-off-by: Rask Ingemann Lambertsen <rask@sygehus.dk> Signed-off-by: Paul Fertser <fercerpav@gmail.com> Cc: Paul Gortmaker <p_gortmaker@yahoo.com> Cc: Balaji Rao <balajirrao@openmoko.org> Cc: Alessandro Zummo <a.zummo@towertech.it> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2009-10-11headers: remove sched.h from interrupt.hAlexey Dobriyan
After m68k's task_thread_info() doesn't refer to current, it's possible to remove sched.h from interrupt.h and not break m68k! Many thanks to Heiko Carstens for allowing this. Signed-off-by: Alexey Dobriyan <adobriyan@gmail.com>
2009-09-24Merge branch 'origin' into for-linusRussell King
Conflicts: MAINTAINERS
2009-09-23rtc: add boot_timesource sysfs attributeMatthew Garrett
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>
2009-09-23rtc: at91rm9200 fixesDavid Brownell
Fix two new-ish runtime warnings in the at91rm9200 (etc) RTC: Platform driver 'at91_rtc' needs updating - please use dev_pm_ops ... by just switching IRQ 1/at91_rtc: IRQF_DISABLED is not guaranteed on shared IRQs ... no longer needed now that rtc_update_irq() changed Signed-off-by: David Brownell <dbrownell@users.sourceforge.net> Acked-by: Alessandro Zummo <a.zummo@towertech.it> Cc: Andrew Victor <linux@maxim.org.za> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2009-09-23drivers/rtc: introduce missing kfreeJulia Lawall
Error handling code following a kzalloc should free the allocated data. The semantic match that finds the problem is as follows: (http://www.emn.fr/x-info/coccinelle/) // <smpl> @r exists@ local idexpression x; statement S; expression E; identifier f,f1,l; position p1,p2; expression *ptr != NULL; @@ x@p1 = \(kmalloc\|kzalloc\|kcalloc\)(...); ... if (x == NULL) S <... when != x when != if (...) { <+...x...+> } ( x->f1 = E | (x->f1 == NULL || ...) | f(...,x->f1,...) ) ...> ( return \(0\|<+...x...+>\|ptr\); | return@p2 ...; ) @script:python@ p1 << r.p1; p2 << r.p2; @@ print "* file: %s kmalloc %s return %s" % (p1[0].file,p1[0].line,p2[0].line) // </smpl> Signed-off-by: Julia Lawall <julia@diku.dk> Cc: David Brownell <david-b@pacbell.net> Cc: Alessandro Zummo <a.zummo@towertech.it> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2009-09-23drivers/rtc: correct error-handling codeJulia Lawall
This code is not executed before ds1307->rtc has been successfully initialized to the result of calling rtc_device_register. Thus the test that ds1307->rtc is not NULL is always true. A simplified version of the semantic match that finds this problem is as follows: (http://coccinelle.lip6.fr/) // <smpl> @match exists@ expression x, E; statement S1, S2; @@ x = rtc_device_register(...) ... when != x = E ( * if (x == NULL || ...) S1 else S2 | * if (x == NULL && ...) S1 else S2 ) // </smpl> Signed-off-by: Julia Lawall <julia@diku.dk> Acked-by: Wolfram Sang <w.sang@pengutronix.de> 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>
2009-09-23rtc: driver for PCAP2 PMICDaniel Ribeiro
[ospite@studenti.unina.it: get pcap data from the parent device] Signed-off-by: guiming zhuo <gmzhuo@gmail.com> Signed-off-by: Daniel Ribeiro <drwyrm@gmail.com> Acked-by: Alessandro Zummo <a.zummo@towertech.it> Signed-off-by: Antonio Ospite <ospite@studenti.unina.it> Cc: Mark Brown <broonie@opensource.wolfsonmicro.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2009-09-23rtc: reorder MakefileAlessandro Zummo
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>
2009-09-23rtc: add Freescale stmp37xx/378x driverdmitry pervushin
Add support for RTC on the Freescale STMP37xx/378x platform. Signed-off-by: dmitry pervushin <dpervushin@embeddedalley.com> 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>
2009-09-23rtc-bfin: do not share RTC IRQMichael Hennerich
The Blackfin RTC IRQ is an internal interrupt, so it makes no sense to have it be shared. Signed-off-by: Michael Hennerich <michael.hennerich@analog.com> Signed-off-by: Mike Frysinger <vapier@gentoo.org> 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>
2009-09-23rtc: U300 COH 901 331 RTC driver v3Linus Walleij
This adds a driver for the RTC COH 901 331 found in the ST-Ericsson U300 series mobile platforms to the RTC subsystem. It integrates to the ARM kernel support recently added to RMKs ARM tree and will be enabled in the U300 defconfig in due time. Signed-off-by: Linus Walleij <linus.walleij@stericsson.com> 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>
2009-09-23rtc: add driver for MXC's internal RTC moduleDaniel Mack
This adds a driver for Freescale's MXC internal real time clock modules. The code is taken from Freescale's BSPs, but modified to fit the current kernel coding mechanisms. Also, the PMIC external clock function was removed for now to not add dead bits and keep the code as simple as possible. [akpm@linux-foundation.org: make PIE_BIT_DEF[] static] Signed-off-by: Daniel Mack <daniel@caiaq.de> Cc: Sascha Hauer <s.hauer@pengutronix.de> Signed-off-by: Alessandro Zummo <a.zummo@towertech.it> Cc: Alessandro Zummo <a.zummo@towertech.it> Cc: Daniel Mack <daniel@caiaq.de> Cc: Sascha Hauer <s.hauer@pengutronix.de> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2009-09-23rtc-philips-pcf2123-rtc-spi-driver-updatesChris Verges
Signed-off: Chris Verges <chrisv@cyberswitching.com> Cc: Christian Pellegrin <chripell@fsfe.org> Cc: Alessandro Zummo <a.zummo@towertech.it> 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>
2009-09-23rtc: Philips PCF2123 RTC SPI driverChris Verges
Add support for the Philips/NXP PCF2123 RTC. Signed-off: Chris Verges <chrisv@cyberswitching.com> Tested-by: Chris Verges <chrisv@cyberswitching.com> Signed-off: Christian Pellegrin <chripell@fsfe.org> Tested-by: Christian Pellegrin <chripell@fsfe.org> Cc: Alessandro Zummo <a.zummo@towertech.it> 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>
2009-09-23spi: prefix modalias with "spi:"Anton Vorontsov
This makes it consistent with other buses (platform, i2c, vio, ...). I'm not sure why we use the prefixes, but there must be a reason. This was easy enough to do it, and I did it. Signed-off-by: Anton Vorontsov <avorontsov@ru.mvista.com> Cc: David Brownell <dbrownell@users.sourceforge.net> Cc: David Woodhouse <dwmw2@infradead.org> Cc: Grant Likely <grant.likely@secretlab.ca> Cc: Jean Delvare <khali@linux-fr.org> Cc: Ben Dooks <ben-linux@fluff.org> Cc: Benjamin Herrenschmidt <benh@kernel.crashing.org> Cc: Dmitry Torokhov <dtor@mail.ru> Cc: Samuel Ortiz <sameo@openedhand.com> Cc: "John W. Linville" <linville@tuxdriver.com> Acked-by: Mike Frysinger <vapier.adi@gmail.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2009-09-22Merge branch 'master' into for-linusRussell King
2009-09-21trivial: remove unnecessary semicolonsJoe Perches
Signed-off-by: Joe Perches <joe@perches.com> Signed-off-by: Jiri Kosina <jkosina@suse.cz>
2009-09-18Merge git://git.kernel.org/pub/scm/linux/kernel/git/lethal/sh-2.6Linus Torvalds
* git://git.kernel.org/pub/scm/linux/kernel/git/lethal/sh-2.6: (262 commits) sh: mach-ecovec24: Add user debug switch support sh: Kill off unused se_skipped in alignment trap notification code. sh: Wire up HAVE_SYSCALL_TRACEPOINTS. video: sh_mobile_lcdcfb: use both register sets for display panning video: sh_mobile_lcdcfb: implement display panning sh: Fix up sh7705 flush_dcache_page() build. sh: kfr2r09: document the PLL/FLL <-> RF relationship. sh: mach-ecovec24: need asm/clock.h. sh: mach-ecovec24: deassert usb irq on boot. sh: Add KEYSC support for EcoVec24 sh: add kycr2_delay for sh_keysc sh: cpufreq: Include CPU id in info messages. sh: multi-evt support for SH-X3 proto CPU. sh: clkfwk: remove bogus set_bus_parent() from SH7709. sh: Fix the indication point of the liquid crystal of AP-325RXA(AP3300) sh: Add EcoVec24 romImage defconfig sh: USB disable process is needed if romImage boot for EcoVec24 sh: EcoVec24: add HIZA setting for LED sh: EcoVec24: write MAC address in boot sh: Add romImage support for EcoVec24 ...
2009-09-17rtc: AB3100 RTC supportLinus Walleij
This adds support for the RTC found inside the AB3100 Mixed Signal chip. The symbols used for communicating with the chip is found in the mfd/ab3100-core.c driver that also provides the platform device. Signed-off-by: Linus Walleij <linus.walleij@stericsson.com> Acked-by: Alessandro Zummo <alessandro.zummo@towertech.it> Signed-off-by: Samuel Ortiz <sameo@linux.intel.com>
2009-09-17rtc: Add support for RTCs on Wolfson WM831x devicesMark Brown
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>
2009-09-16Merge branch 'master' of ↵Paul Mundt
git://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux-2.6 Conflicts: arch/sh/kernel/vmlinux.lds.S
2009-09-15Nicolas Pitre has a new email addressNicolas Pitre
Due to problems at cam.org, my nico@cam.org email address is no longer valid. FRom now on, nico@fluxnic.net should be used instead. Signed-off-by: Nicolas Pitre <nico@fluxnic.net> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2009-09-10[ARM] pxa: update rtc-sa1100.c to use 'struct dev_pm_ops'Haojian Zhuang
Remove the following warning: Platform driver 'sa1100-rtc' needs updating - please use dev_pm_ops Signed-off-by: Haojian Zhuang <haojian.zhuang@marvell.com> Signed-off-by: Eric Miao <eric.y.miao@gmail.com>
2009-09-10[ARM] pxa: update rtc-pxa.c to use 'struct dev_pm_ops'Robert Jarzmik
Remove the following warning: Platform driver 'pxa-rtc' needs updating - please use dev_pm_ops Signed-off-by: Haojian Zhuang <haojian.zhuang@marvell.com> Signed-off-by: Robert Jarzmik <robert.jarzmik@free.fr> Signed-off-by: Eric Miao <eric.y.miao@gmail.com>
2009-09-09rtc: rtc-sh: Fix up oops in early periodic freq assignment.Paul Mundt
With the reordered init order, the rtc device is not registered until later, while sh_rtc_irq_set_freq() was attempting to assign ->irq_freq directly, resulting in an oops. This is handled by the upper layers for us, so just kill off the problematic dereference completely. Reported-by: Guennadi Liakhovetski <g.liakhovetski@gmx.de> Signed-off-by: Paul Mundt <lethal@linux-sh.org>
2009-08-20rtc: rtc-ds1302: Kill off unused variables.Paul Mundt
There were a few stray unused variables left over, kill them off. Signed-off-by: Paul Mundt <lethal@linux-sh.org>
2009-08-20rtc: rtc-sh fixesAlessandro Zummo
- simplifies irq set freq - ioctl() was duplicating functionalities of rtc-dev core - corrected initialization sequence - use platform_driver_probe Signed-off-by: Alessandro Zummo <a.zummo@towertech.it> Cc: Angelo Castello <angelo.castello@st.com> Cc: Giuseppe Cavallaro <peppe.cavallaro@st.com> Cc: Kay Sievers <kay.sievers@vrfy.org> Cc: Jamie Lenehan <lenehan@twibble.org> Signed-off-by: Paul Mundt <lethal@linux-sh.org>
2009-08-20rtc: rtc-ds1302 fixesAlessandro Zummo
- removed spinlock protection, it's handled by the rtc class - use platform_driver_probe - return appropriate code for rtc_read_time - style issues Signed-off-by: Alessandro Zummo <a.zummo@towertech.it> Signed-off-by: Paul Mundt <lethal@linux-sh.org>
2009-07-29rtc: mark if rtc-cmos drivers were successfully registeredThadeu Lima de Souza Cascardo
rtc-cmos has two drivers, one PNP and one platform. When PNP has not succeeded probing, platform is registered. However, it tries to unregister both drivers unconditionally, instead of only unregistering those that were successfully registered. This causes runtime warnings to be emitted from the driver core code. Fix this with a boolean variable for each driver indicating whether registering was successful. Signed-off-by: Thadeu Lima de Souza Cascardo <cascardo@holoscopio.com> Cc: David Brownell <david-b@pacbell.net> Cc: Bjorn Helgaas <bjorn.helgaas@hp.com> Cc: Alessandro Zummo <alessandro.zummo@towertech.it> Cc: Ingo Molnar <mingo@elte.hu> Cc: David Brownell <david-b@pacbell.net> Cc: Kay Sievers <kay.sievers@vrfy.org> Cc: Greg KH <greg@kroah.com> Cc: Ozan Caglayan <ozan@pardus.org.tr> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2009-07-06rtc: ds1374, fix lock imbalanceJiri Slaby
When i2c_smbus_read_byte_data fails in ds1374_work, we forgot to unlock the held lock. Fix that. Signed-off-by: Jiri Slaby <jirislaby@gmail.com> Cc: Alessandro Zummo <a.zummo@towertech.it> Cc: Scott Wood <scottwood@freescale.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2009-07-03Update Yoichi Yuasa's e-mail addressYoichi Yuasa
Signed-off-by: Yoichi Yuasa <yuasa@linux-mips.org> Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
2009-06-30bfin: delay IRQ registration until driver is readyMike Frysinger
Make sure we do not actually request the RTC IRQ until the device driver is fully ready to handle and process any interrupt. This way a spurious interrupt won't crash the system (which may happen if the bootloader was poking the RTC right before booting Linux). Signed-off-by: Mike Frysinger <vapier@gentoo.org> 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>
2009-06-19rtc: make rtc_update_irq callable with irqs enabledAtsushi Nemoto
The rtc_update_irq() might be called with irqs enabled, if a interrupt handler was registered without IRQF_DISABLED. Use spin_lock_irqsave/spin_unlock_irqrestore instead of spin_lock/spin_unlock. Also update kerneldoc and drivers which do extra work to follow the current interface spec, as suggestted by David Brownell. Signed-off-by: Atsushi Nemoto <anemo@mba.ocn.ne.jp> Cc: Alessandro Zummo <a.zummo@towertech.it> 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>
2009-06-18rtc-ds1553: drop IRQF_SHAREDAtsushi Nemoto
IRQF_SHARED should not be used with IRQF_DISABLED. There is no in-tree user of this driver and only out-of-tree user I know uses a dedicated irq line for this RTC. Signed-off-by: Atsushi Nemoto <anemo@mba.ocn.ne.jp> Cc: Alessandro Zummo <a.zummo@towertech.it> 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>
2009-06-18rtc-tx4939: drop IRQF_SHAREDAtsushi Nemoto
IRQF_SHARED should not be used with IRQF_DISABLED. This RTC have a dedicated irq line to SoC's internal interrupt controller so there is no reason to use IRQF_SHARED. Signed-off-by: Atsushi Nemoto <anemo@mba.ocn.ne.jp> Cc: Alessandro Zummo <a.zummo@towertech.it> 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>
2009-06-18rtc: add stand-alone driver for RX8025 chipWolfgang Grandegger
Add support for the Epson RX-8025SA/NB RTC chips. It includes support for alarms, periodic interrupts (1 Hz) and clock precision adjustment. For clock precision adjustment, the SYSFS file "clock_adjust_ppb" gets created in "/sys/class/rtc/rtcX/device". It permits to set and get the clock adjustment in ppb (parts per billion), e.g.: # echo -183000 > /sys/class/rtc/rtc0/device/clock_adjust_ppb # cat /sys/class/rtc/rtc0/device/clock_adjust_ppb -183000 This allows to compensate temperature dependent clock drifts. According to the RX8025 SA/NB application manual the frequency and temperature characteristics can be approximated using the following equation: df = a * (ut - t)**2 df: Frequency deviation in any temperature a : Coefficient = (-35 +-5) * 10**-9 ut: Ultimate temperature in degree = +25 +-5 degree t : Any temperature in degree Signed-off-by: Wolfgang Grandegger <wg@grandegger.com> Signed-off-by: Sergei Poselenov <sposelenov@emcraft.com> Signed-off-by: Yuri Tikhonov <yur@emcraft.com> Signed-off-by: Dmitry Rakhchev <rda@emcraft.com> Signed-off-by: Matthias Fuchs <matthias.fuchs@esd.eu> Acked-by: Jean Delvare <khali@linux-fr.org> Signed-off-by: Alessandro Zummo <a.zummo@towertech.it> 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>
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