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* rtc: fix platform driver hotplug/coldplugKay Sievers2008-04-11
| | | | | | | | | | | | | | Since 43cc71eed1250755986da4c0f9898f9a635cb3bf, the platform modalias is prefixed with "platform:". Add MODULE_ALIAS() to the hotpluggable RTC platform drivers, to re-enable module auto loading. [dbrownell@users.sourceforge.net: more drivers, minor fix] Signed-off-by: Kay Sievers <kay.sievers@vrfy.org> Signed-off-by: David Brownell <dbrownell@users.sourceforge.net> Cc: Greg KH <greg@kroah.com> 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>
* rtc: rtc-s35390a.c needs the bitreverse libraryRandy Dunlap2008-04-11
| | | | | | | | | | | | | | | rtc-s35390a uses BITREVERSE functions so it needs to select that config symbol to ensure that the functions are built. drivers/built-in.o: In function `s35390a_set_datetime': linux-2.6.25-rc8-git7/drivers/rtc/rtc-s35390a.c:144: undefined reference to `byte_rev_table' drivers/built-in.o: In function `s35390a_get_datetime': linux-2.6.25-rc8-git7/drivers/rtc/rtc-s35390a.c:163: undefined reference to `byte_rev_table' Signed-off-by: Randy Dunlap <randy.dunlap@oracle.com> Acked-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>
* rtc-at91sam9 fixesDavid Brownell2008-03-19
| | | | | | | | | | | | | Updates to the at91sam9 rtt-as-rtc driver: - Bugfix: IRQ enable bits need shifting before masking with status - Platform code to initialize wakeup bits didn't get merged; cope Signed-off-by: David Brownell <dbrownell@users.sourceforge.net> Cc: Justin Waters <justin.waters@timesys.com> 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>
* rtc: fix kconfig helpAlessandro Zummo2008-03-19
| | | | | | | 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>
* rtc: add support for the S-35390A RTC chipByron Bradley2008-03-04
| | | | | | | | | | | | | | | This adds basic get/set time support for the Seiko Instruments S-35390A. This chip communicates using I2C and is used on the QNAP TS-109/TS-209 NAS devices. [akpm@linux-foundation.org: coding-style fixes] Signed-off-by: Byron Bradley <byron.bbradley@gmail.com> Acked-by: Jean Delvare <khali@linux-fr.org> Acked-by: David Brownell <david-b@pacbell.net> Tested-by: Tim Ellis <tim@ngndg.com> 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>
* rtc-cmos: display HPET emulation modeDavid Brownell2008-02-23
| | | | | | | | | | | | | | | For the "cmos" RTC, have /proc/driver/rtc say whether HPET based IRQ emulation is in effect. Given the problems we've had with this particular hardware maldesign (and the fact that most BIOS code seems not to provide the IRQ routing needed to use the saner HPET modes), this should help troubleshooting. Signed-off-by: David Brownell <dbrownell@users.sourceforge.net> Cc: Alessandro Zummo <a.zummo@towertech.it> Cc: Ingo Molnar <mingo@elte.hu> Cc: Thomas Gleixner <tglx@linutronix.de> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
* rtc-r9701.c: silence compiler warningS.Çağlar Onur2008-02-10
| | | | | | | | | | | Commit 75b6102257874a4ea796af686de2f72cfa0452f9 ("rtc: add support for Epson RTC-9701JE V4") introduced the warning drivers/rtc/rtc-r9701.c: In function `r9701_get_datetime': drivers/rtc/rtc-r9701.c:74: warning: unused variable `time' Signed-off-by: S.Çağlar Onur <caglar@pardus.org.tr> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
* rtc: at91sam9 RTC support (RTT and/or RTC)David Brownell2008-02-06
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | AT91sam9 RTC support, primarily in the form of an RTT-as-RTC driver that was extracted from 2.6.23-at91 patch and updated: - Relies on now-merged platform updates, which associate the RTT hardware address with each RTT and use the "at91_rtt" name. - RTC framework related fixes and cleanups, notably: * removed now-needless suspend/resume clock offset logic * alarm read/write now respects the "enabled" flag * suspend always disables update irqs * shutdown (and startup) disables all irqs - Misc cleanup: * use dev_*() messaging * add comments * remove globals, * ... etc - Don't force use of RTT0 and GPBR0. Either resource may need to be used for other purposes (like NO_HZ support). - Update "AT91RM9200 RTC" Kconfig to allow it on SAM9RL chips (it has both RTT and RTC). Driver binding uses bus_find_device() to avoid needing any kind of "timer library" code when there's more than one RTT module. (This timer can be used as an RTC, to support NO_HZ operation, or potentially for other stuff. The choice is a per-system policy.) Signed-off-by: David Brownell <dbrownell@users.sourceforge.net> Cc: Michel Benoit <murpme@gmail.com> Cc: Nicolas Ferre <nicolas.ferre@rfo.atmel.com> Cc: Andrew Victor <linux@maxim.org.za> Cc: Russell King <rmk@arm.linux.org.uk> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
* rtc: remove more dev->power.power_state usageDavid Brownell2008-02-06
| | | | | | | | | | | | | Remove some more references to dev->power.power_state. That field is overdue for removal, but we can't do that while it's still referenced in the kernel. The only reason to update it was to make the /sys/devices/.../power/state files (now removed) work better. Signed-off-by: David Brownell <dbrownell@users.sourceforge.net> Cc: Russell King <rmk@arm.linux.org.uk> 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>
* rtc ds1307: ds_1340 change initfrederic Rodo2008-02-06
| | | | | | | | | | For DS140, clear the oscillator fault flag as needed. Signed-off-by: Frederic RODO <f.rodo@til-technologies.fr> [ And remove some "sparse" warnings. ] Signed-off-by: David Brownell <dbrownell@users.sourceforge.net> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
* rtc: add support for Epson RTC-9701JE V4Magnus Damm2008-02-06
| | | | | | | | | | Add support for the Epson RTC-9701JE SPI RTC device. Signed-off-by: Magnus Damm <damm@igel.co.jp> Acked-by: Alessandro Zummo <a.zummo@towertech.it> Acked-by: David Brownell <david-b@pacbell.net> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
* rtc: add support for Epson RTC-9701JE V2Magnus Damm2008-02-06
| | | | | | | | | | Add support for the Epson RTC-9701JE SPI RTC device. Signed-off-by: Magnus Damm <damm@igel.co.jp> Acked-by: Alessandro Zummo <a.zummo@towertech.it> Acked-by: David Brownell <david-b@pacbell.net> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
* rtc: add HPET RTC emulation to RTC_DRV_CMOSBernhard Walle2008-02-06
| | | | | | | | | | | | | | | | | | That patch adds the RTC emulation of the HPET timer to the new RTC_DRV_CMOS. The old drivers/char/rtc.ko driver had that functionality and it's important on new systems. [akpm@linux-foundation.org: unbreak alpha build] Signed-off-by: Bernhard Walle <bwalle@suse.de> Cc: Alessandro Zummo <a.zummo@towertech.it> Cc: David Brownell <david-b@pacbell.net> Cc: Ingo Molnar <mingo@elte.hu> Cc: Thomas Gleixner <tglx@linutronix.de> Cc: Andi Kleen <ak@suse.de> Cc: john stultz <johnstul@us.ibm.com> Cc: Robert Picco <Robert.Picco@hp.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
* Blackfin RTC driver: convert sync wait to use the irq write complete noticeMike Frysinger2008-02-06
| | | | | | | | | | | - thus clearing out the need for spin locks - add a small optimization for reading of the rtc field Signed-off-by: Mike Frysinger <michael.frysinger@analog.com> Signed-off-by: Bryan Wu <bryan.wu@analog.com> Acked-by: Alessandro Zummo <alessandro.zummo@towertech.it> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
* Blackfin RTC driver: shave off another memcpy() by using assignment.Mike Frysinger2008-02-06
| | | | | | | | Signed-off-by: Mike Frysinger <michael.frysinger@analog.com> Signed-off-by: Bryan Wu <bryan.wu@analog.com> Acked-by: Alessandro Zummo <alessandro.zummo@towertech.it> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
* Blackfin RTC driver: read_alarm() checks the enabled field, not the pending ↵Mike Frysinger2008-02-06
| | | | | | | | | | | | field. also, dont bother using memcpy since we can just do an assignment of the same structure. Signed-off-by: Mike Frysinger <michael.frysinger@analog.com> Signed-off-by: Bryan Wu <bryan.wu@analog.com> Acked-by: Alessandro Zummo <alessandro.zummo@towertech.it> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
* Blackfin RTC driver: use dev_dbg() rather than pr_stamp()Mike Frysinger2008-02-06
| | | | | | | | Signed-off-by: Mike Frysinger <michael.frysinger@analog.com> Signed-off-by: Bryan Wu <bryan.wu@analog.com> Acked-by: Alessandro Zummo <alessandro.zummo@towertech.it> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
* Blackfin RTC driver: cleanup proc handler (we dont need RTC reg dump now ↵Mike Frysinger2008-02-06
| | | | | | | | | | that we have MMR filesystem in sysfs) Signed-off-by: Mike Frysinger <michael.frysinger@analog.com> Signed-off-by: Bryan Wu <bryan.wu@analog.com> Acked-by: Alessandro Zummo <alessandro.zummo@towertech.it> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
* Blackfin RTC driver: we pass in a (struct device*) to the irq handler, not a ↵Mike Frysinger2008-02-06
| | | | | | | | | | (struct platform_device*), so fix the irq handler Signed-off-by: Mike Frysinger <michael.frysinger@analog.com> Signed-off-by: Bryan Wu <bryan.wu@analog.com> Acked-by: Alessandro Zummo <alessandro.zummo@towertech.it> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
* Blackfin RTC driver: the frequency function is in units of Hz, not units of ↵Mike Frysinger2008-02-06
| | | | | | | | | | seconds, so lock our driver down to 1 Hz Signed-off-by: Mike Frysinger <michael.frysinger@analog.com> Signed-off-by: Bryan Wu <bryan.wu@analog.com> Acked-by: Alessandro Zummo <alessandro.zummo@towertech.it> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
* Platform real time clock driver for Dallas 1511 chipAndrew Sharp2008-02-06
| | | | | | | | | | Add RTC support for DS1511 RTC/WDT chip. Signed-off-by: Andy Sharp <andy.sharp@onstor.com> 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>
* rtc-cmos alarm acts as oneshotDavid Brownell2008-02-06
| | | | | | | | | | | | | | | | | | | | | Start making the rtc-cmos alarm act more like a oneshot alarm by disabling that alarm after its IRQ fires. (ACPI hooks are also needed.) The Linux RTC framework has previously been a bit vague in this area, but any other behavior is problematic and not very portable. RTCs with full YYYY-MM-DD HH:MM[:SS] alarms won't have a problem here. Only ones with partial match criteria, with the most visible example being the PC RTC, get confused. (Because the criteria will match repeatedly.) Update comments relating to that oneshot behavior and timezone handling. (Timezones are another issue that's mostly visible with rtc-cmos. That's because PCs often dual-boot MS-Windows, which likes its RTC to match local wall-clock time instead of UTC.) Signed-off-by: David Brownell <dbrownell@users.sourceforge.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>
* rtc: ds1302 rtc supportPaul Mundt2008-02-06
| | | | | | | | | | | | | | | | | This adds a basic ds1302 RTC driver, which is basically a cleanup and move of the in-tree SH SecureEdge5410 code (which is currently located in arch/sh/board/snapgear/rtc.c) to drivers/rtc. This aims to be a building block that the M32R and CRIS code can be worked on top of, so we can get rid of drivers/char/ds1302.c and arch/cris/arch-v10/drivers/ds1302.c respectively, though more work is needed for this. [akpm@linux-foundation.org: coding-style fixes] Signed-off-by: Paul Mundt <lethal@linux-sh.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>
* rtc-cmos: export nvram in sysfsDavid Brownell2008-02-06
| | | | | | | | | | | | | | | | | | | | | | | | | | | This makes rtc-cmos export its NVRAM, like several other RTC drivers. It still works within the limits of the current CMOS_READ/CMOS_WRITE calls, which don't understand how to access multiple register banks. The primary impact of that limitation is that Linux can't access the uppermost 128 bytes of NVRAM on many systems. Note that this isn't aiming to be a drop-in replacement for the legacy /dev/nvram support. (Presumably that has real users, and isn't just getting carried forward automatically?) Userspace handles more work: - When userspace code updates NVRAM, that will need to include updating any platform-specific checksums that may apply. - No /proc/driver/nvram file will parse and display NVRAM data according to whichever boot firmware your board expects. Also minor pnp-related updates: update a comment, remove dead code. Signed-off-by: David Brownell <dbrownell@users.sourceforge.net> Signed-off-by: Alessandro Zummo <a.zummo@towertech.it> Cc: Bjorn Helgaas <bjorn.helgaas@hp.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
* rtc-s3c: Use is_power_of_2() macro for simplicity.Robert P. J. Day2008-02-06
| | | | | | | | | | Use is_power_of_2() macro for simplicity. Signed-off-by: Robert P. J. Day <rpjday@crashcourse.ca> 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>
* rtc-pcf8583: Don't abuse I2C_M_NOSTARTJean Delvare2008-02-06
| | | | | | | | | | | | The rtc-pcf8583 driver is using the I2C_M_NOSTART flag but shouldn't. This flag is only meant for broken chips and the PCF8583 RTC chip is not one of these. Signed-off-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>
* Cosmetic fixes to RTC subsystem's KconfigAlessandro Zummo2008-02-06
| | | | | | | | | | Add adds a warning if a potentially conflicting RTC option has been selected and makes some other cosmetic fixes to the Kconfig. 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>
* Merge git://git.kernel.org/pub/scm/linux/kernel/git/lethal/sh-2.6Linus Torvalds2008-01-28
|\ | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | * git://git.kernel.org/pub/scm/linux/kernel/git/lethal/sh-2.6: (197 commits) sh: add spi header and r2d platform data V3 sh: update r7780rp interrupt code sh: remove consistent alloc stuff from the machine vector sh: use declared coherent memory for dreamcast pci ethernet adapter sh: declared coherent memory support V2 sh: Add support for SDK7780 board. sh: constify function pointer tables sh: Kill off -traditional for linker script. cdrom: Add support for Sega Dreamcast GD-ROM. sh: Kill off hs7751rvoip reference from arch/sh/Kconfig. sh: Drop r7780rp_defconfig, use r7780mp_defconfig as kbuild default. sh: Kill off dead HS771RVoIP board support. sh: r7785rp: Fix up DECLARE_INTC_DESC() arg mismatch. sh: r7785rp: Hook up the rest of the HL7785 FPGA IRQ vectors. sh: r2d - enable sm501 usb host function sh: remove voyagergx sh: r2d - add lcd planel timings to sm501 platform data sh: Add OHCI and UDC platform devices for SH7720. sh: intc - remove default interrupt priority tables sh: Correct pte size mismatch for X2 TLB. ...
| * rtc: rtc-sh: Split out the CPU defs to asm/cpu/.Paul Mundt2008-01-27
| | | | | | | | | | | | | | | | | | | | | | With all of the different CPU types this was getting a but unwieldly. Since sh64 is now integrated, we don't have to worry about multiple architectures caring about the header definitions. Split out the defs for each asm/cpu/ to make rtc-sh slightly less visually offensive. Signed-off-by: Paul Mundt <lethal@linux-sh.org>
| * rtc: rtc-sh: SH-2A support.Paul Mundt2008-01-27
| | | | | | | | | | | | Trivial support for the SH-2A on-chip RTC. Signed-off-by: Paul Mundt <lethal@linux-sh.org>
| * rtc: rtc-sh: SH-5 support.Paul Mundt2008-01-27
| | | | | | | | | | | | Trivial support for the SH-5 (sh64) on-chip RTC. Signed-off-by: Paul Mundt <lethal@linux-sh.org>
* | Merge branch 'pxa-plat' into develRussell King2008-01-28
|\ \ | |/ |/| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | * pxa-plat: (53 commits) [ARM] 4762/1: Basic support for Toradex Colibri module [ARM] pxa: fix mci_init functions returning -1 [ARM] 4737/1: Refactor corgi_lcd to improve readability + bugfix [ARM] 4747/1: pcm027: support for pcm990 baseboard for phyCORE-PXA270 [ARM] 4746/1: pcm027: network support for phyCORE-PXA270 [ARM] 4745/1: pcm027: default configuration [ARM] 4744/1: pcm027: add support for phyCORE-PXA270 CPU module [NET] smc91x: Make smc91x use IRQ resource trigger flags [ARM] pxa: add default config for littleton [ARM] pxa: add basic support for Littleton (PXA3xx Form Factor Platform) [ARM] 4664/1: Add basic support for HTC Magician PDA phones [ARM] 4649/1: Base support for pxa-based Toshiba e-series PDAs. [ARM] pxa: skip registers saving/restoring if entering standby mode [ARM] pxa: fix PXA27x resume [ARM] pxa: Avoid fiddling with CKEN register on suspend [ARM] pxa: Add PXA3 standby code hooked into the IRQ wake scheme [ARM] pxa: Add zylonite MFP wakeup configurations [ARM] pxa: program MFPs for low power mode when suspending [ARM] pxa: make MFP configuration processor independent [ARM] pxa: remove un-used pxa3xx_mfp_set_xxx() functions ... Conflicts: arch/arm/mach-pxa/ssp.c Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
| * [ARM] pxa/sa1100: replace wakeup supportRussell King2008-01-26
| | | | | | | | | | | | | | | | | | Replace wakeup support using the alarm via the SA1100 RTC driver on SA1100 and PXA platforms. This allows RTC alarm wakeup to be enabled via sysfs using the conventional attributes. Acked-by: Alessandro Zummo <a.zummo@towertech.it> Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
* | i2c: normal_i2c can be made const (rtc drivers)Jean Delvare2008-01-27
|/ | | | | Signed-off-by: Jean Delvare <khali@linux-fr.org> Acked-by: Alessandro Zummo <alessandro.zummo@towertech.it>
* rtc: use class iteration apiDave Young2008-01-24
| | | | | | | | | | Convert to use the class iteration api. Signed-off-by: Dave Young <hidave.darkstar@gmail.com> Cc: Alessandro Zummo <a.zummo@towertech.it> Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
* rtc-at32ap700x: fix irq init oopsDavid Brownell2007-12-17
| | | | | | | | | | | | Reorder at32_rtc_probe() so that it's safe (no oopsing) to fire the IRQ handler the instant that it's registered. (Bug noted via "Debug shared IRQ handlers" kernel debug option.) Signed-off-by: David Brownell <dbrownell@users.sourceforge.net> Cc: Alessandro Zummo <a.zummo@towertech.it> Cc: <hcegtvedt@atmel.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
* spi: use simplified spi_sync() calling conventionMarc Pignat2007-12-05
| | | | | | | | | | | Given the patch which simplifies the spi_sync calling convention, this one updates the callers of that routine which tried using it according to the previous specification. (Most didn't.) Signed-off-by: Marc Pignat <marc.pignat@hevs.ch> Signed-off-by: David Brownell <dbrownell@users.sourceforge.net> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
* RTC: assure proper memory ordering with respect to RTC_DEV_BUSY flagJiri Kosina2007-12-05
| | | | | | | | | | | | | | | We must make sure that the RTC_DEV_BUSY flag has proper lock semantics, i.e. that the RTC_DEV_BUSY stores clearing the flag don't get reordered before the preceeding stores and loads and vice versa. Spotted by Nick Piggin. Signed-off-by: Jiri Kosina <jkosina@suse.cz> Cc: Nick Piggin <nickpiggin@yahoo.com.au> Cc: David Brownell <david-b@pacbell.net> Acked-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>
* RTC: convert mutex to bitfieldJiri Kosina2007-11-29
| | | | | | | | | | | | | | RTC code is using mutex to assure exclusive access to /dev/rtc. This is however wrong usage, as it leaves the mutex locked when returning into userspace, which is unacceptable. Convert rtc->char_lock into bit operation. Signed-off-by: Jiri Kosina <jkosina@suse.cz> Acked-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>
* Blackfin arch: punt CONFIG_BFIN -- we already have CONFIG_BLACKFINMike Frysinger2007-11-23
| | | | | | Signed-off-by: Mike Frysinger <michael.frysinger@analog.com> Signed-off-by: Bryan Wu <bryan.wu@analog.com>
* rtc-ds1307 exports NVRAMDavid Brownell2007-11-14
| | | | | | | | | | Export the NVRAM on DS1307 and DS1338 chips, like several of the other drivers do for such combination RTC-and-NVRAM chips. Signed-off-by: David Brownell <dbrownell@users.sourceforge.net> Acked-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>
* RTCs: handle NVRAM betterDavid Brownell2007-11-14
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Several of the RTC drivers are exporting binary "nvram" files in sysfs. Such NVRAM (or on many systems, EEPROM) data is often initialized during system manufacture to hold data about identity (serial numbers, Ethernet addresses, etc), configuration, calibration, and so forth. This patch improves integrity and security of those files: - Correctly initializes the size in one of the two cases where that was not yet being done. - Improves system security/integrity by making this state not be world-writable by default. Letting arbitrary userspace code mangle such state by default is at least Not A Good Thing; and it could sometimes be worse, depending on the particular data that might be corrupted. (I disregard the paranoiac "don't let anyone read it either" approach. Anyone storing passwords in such memory doesn't really care about security.) Signed-off-by: David Brownell <dbrownell@users.sourceforge.net> Acked-by: Atsushi Nemoto <anemo@mba.ocn.ne.jp> Cc: Torsten Ertbjerg Rasmussen <tr@newtec.dk> Cc: Mark Zhan <rongkai.zhan@windriver.com> Cc: Thomas Hommel <thomas.hommel@gefanuc.com> Acked-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>
* rtc_hctosys expects RTCs in UTC (doc)David Brownell2007-11-14
| | | | | | | | | | | | | | The RTC "hctosys" mechanism expects that RTC clock will use UTC, not local time (e.g. PST). Say so in Kconfig and in the kernel message. (Strictly speaking, the RTC clock should be tracking the POSIX epoch. That's not worth going into here. Goofing timezones means clocks are wrong by many hours; the POSIX-v-UTC differences just cost seconds.) Signed-off-by: David Brownell <dbrownell@users.sourceforge.net> Acked-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>
* rtc: rtc-sh: Zero out tm value for invalid rtc states.Paul Mundt2007-11-07
| | | | | | | Follows the changes of some of the other RTC drivers. If the tm value is bogus, just zero it out. Adds some sanity for RTC_RD_TIME. Signed-off-by: Paul Mundt <lethal@linux-sh.org>
* rtc: sh-rtc: Handle rtc_device_register() failure properly.Paul Mundt2007-11-07
| | | | | | | | | Currently if rtc_device_register() fails we have an IS_ERR() on the wrong pointer, which causes this to always be skipped. Fix this up to actually check the right pointer. The return value was always correct, even though the check was wrong. Signed-off-by: Paul Mundt <lethal@linux-sh.org>
* rtc: m48t59 fix section mismatch warningRandy Dunlap2007-11-05
| | | | | | | | | | | | | Change the name of this data to use a name (suffix) that is whitelisted by MODPOST so that the section warning is fixed (not generated). WARNING: vmlinux.o(.data+0x1b140): Section mismatch: reference to .init.text:m48t59_rtc_probe (between 'm48t59_rtc_platdrv' and 'm48t59_nvram_attr') Signed-off-by: Randy Dunlap <randy.dunlap@oracle.com> Acked-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>
* rtc: ignore msb when reading back mday from alarmMark Lord2007-11-04
| | | | | | | | | | | | | | | | | | | | I have a system here that actively relies upon RTC wake alarms, and it has been failing (again) for a few days when attempting to use the /sys/class/rtc/rtc?/wakealarm interface. The old (fixed by Linus) /proc/ interface still works, but I'd like to get it using the new one. This patch fixes rtc-cmos to ignore the two upper bits when reading the BCD mday (day of month) register from CMOS. Some systems (eg. mine) seem to have the top bit set to "1" for some reason. The older /proc/ interface ignores the upper bits, and so we should too. Signed-off-by: Mark Lord <mlord@pobox.com> Acked-by: David Brownell <david-b@pacbell.net> Cc: Alessandro Zummo <a.zummo@towertech.it> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
* s3c-rtc: remove unused variableKrzysztof Helt2007-10-30
| | | | | | | Signed-off-by: Krzysztof Helt <krzysztof.h1@wp.pl> Acked-by: Ben Dooks <ben-linux@fluff.org> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
* typo fixesMatt LaPlante2007-10-19
| | | | | | | | | | | | Most of these fixes were already submitted for old kernel versions, and were approved, but for some reason they never made it into the releases. Because this is a consolidation of a couple old missed patches, it touches both Kconfigs and documentation texts. Signed-off-by: Matt LaPlante <kernel1@cyberdogtech.com> Acked-by: Randy Dunlap <randy.dunlap@oracle.com> Signed-off-by: Adrian Bunk <bunk@kernel.org>
* remove asm/bitops.h includesJiri Slaby2007-10-19
| | | | | | | | | | | | | remove asm/bitops.h includes including asm/bitops directly may cause compile errors. don't include it and include linux/bitops instead. next patch will deny including asm header directly. Cc: Adrian Bunk <bunk@kernel.org> Signed-off-by: Jiri Slaby <jirislaby@gmail.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
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