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* Fix ahci driver 'flags' typeLinus Torvalds2008-07-25
| | | | | | | | The new type checking of the flags arguments to irqsave and friends (commit 3f307891ce0e7b0438c432af1aacd656a092ff45) pointed out this thing with a big nice warning. Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
* edac: mpc85xx fix pci ofdev 2nd passDave Jiang2008-07-25
| | | | | | | | | | | Convert PCI err device from platform to open firmware of_dev to comply with powerpc schemes. [akpm@linux-foundation.org: coding-style fixes] Signed-off-by: Dave Jiang <djiang@mvista.com> Signed-off-by: Doug Thompson <dougthompson@xmission.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
* edac: mv64x60 add pci fixupDave Jiang2008-07-25
| | | | | | | | | | Fixup of missing bit 0 on 64360 PCIx_ERR_MASK and errata FEr-#11 and FEr-#16 for the 64460. Bit 0 must remain 0. Signed-off-by: Dave Jiang <djiang@mvista.com> Signed-off-by: Doug Thompson <dougthompson.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
* edac: mv64x60 fix get_propertyDave Jiang2008-07-25
| | | | | | | | | Update get_property() call to use of_get_property() in order to fix compile Signed-off-by: Dave Jiang <djiang@mvista.com> Signed-off-by: Doug Thompson <dougthompson.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
* edac: e752x fix too loud on nonmemory errorsDoug Thompson2008-07-25
| | | | | | | | | | | | | | | | This module harvests more than just memory errors, it also harvests various bus and dma errors that the Chipset detects. Previously, it would report all such errors, which would cause output to be TOO loud. This patches therefore adds a parameter which is used to turn off NON-MEMORY error reports by default. Or the reporting can be enabled via the parameter Also did code style cleanup: less than 80 characters per line rule Signed-off-by: Doug Thompson <dougthompson@xmission.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
* edac: core fix added newline to sysfs dimm labelsArthur Jones2008-07-25
| | | | | | | | | | | | | | | | | | | | | The channel DIMM label does not seem to be used much in the edac code. However, where it is used (in the core code), it is assumed to not have a newline embedded. This leaves the sysfs file newline free which looks funny when cat'ing it. Here we just add the trailing newline to the sysfs chX_dimm_label output... [Doug Thompson note: the DIMM label is one of the primary uses of EDAC. User space daemon scripts, edac-utils@sourceforge, populate the DIMM label fields, via /sys/devices/system/edac attributes, with the silk screen labels of the motherboard in use. dmidecode access BIOS tables, but BIOS tables are well known to be incorrect and useless in these respects. edac-utils will strip off any newlines before its use of the output, when displaying DIMM slot silk screen labels. Signed-off-by: Arthur Jones <ajones@riverbed.com> Signed-off-by: Doug Thompson <dougthompson@xmission.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
* edac: core fix static to dynamic ksetArthur Jones2008-07-25
| | | | | | | | | | | Static kobjects and ksets are not supported in Linux kernel. Convert the mc_kset from static to dynamic. This patch depends on my previous patch to remove the module parameter attributes from mc... Signed-off-by: Arthur Jones <ajones@riverbed.com> Signed-off-by: Doug Thompson <dougthompson@xmission.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
* edac: core fix redundant sysfs controls to parametersArthur Jones2008-07-25
| | | | | | | | | | | | /sys/devices/system/edac/mc has a few files which are duplicated in /sys/module/edac_core/parameters. Now that all the functionality is duplicated between these two locations, we remove the former kobject attributes and update the documentation. Signed-off-by: Arthur Jones <ajones@riverbed.com> Signed-off-by: Doug Thompson <dougthompson@xmission.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
* edac: core fix workq timerArthur Jones2008-07-25
| | | | | | | | | | | | | | | | | | When updating the edac_mc_poll_msec module parameter from the sysfs /sys/module/edac_core/parameters/edac_mc_poll_msec file, we don't update the workq timers. So that, if we move from a big poll time to a small one, the small one won't take effect until the big one has timed out. Here we provide a new module parameter set method to call out to the update routine. This brings the /sys/module/edac_core/parameters functionality up to that provided by the /sys/drivers/system/edac/mc sysfs module parameter files so that we can remove them or at least link to the /sys/module files... Signed-off-by: Arthur Jones <ajones@riverbed.com> Signed-off-by: Doug Thompson <dougthompson@xmission.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
* edac: core fix to use dynamic kobjectArthur Jones2008-07-25
| | | | | | | | | | | | | | | | | | | | | Static kobjects are not supported in linux kernel. Convert the edac_pci_top_main_kobj from static to dynamic. This avoids the double free of the edac_pci_top_main_kobj.name that we see on module reload of the e752x edac driver (and probably others as well). In addition Greg KH <greg@kroah.com> has pointed out that this code may be cleaned up significantly. I will look at that as a follow-on patch, for now, I just want the minimum fix to get this double-free oops bug squashed... Many thanks to Greg KH for his patience in showing me what the Documentation/kobject.txt already said (oops)... Signed-off-by: Arthur Jones <ajones@riverbed.com> Signed-off-by: Doug Thompson <dougthompson@xmission.com> Acked-by: Greg Kroah-Hartman <gregkh@suse.de> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
* edac: i5100: cleanupArthur Jones2008-07-25
| | | | | | | | | | | | | | | | | | | Some code cleanliness issues found by Andrew Morton (thanks!) which should not affect functionality, but which should help make the code more maintainable. In particular, we now: * convert all #define's w/ a parameter to static inlines * use 1UL rather than 1ULL when calculating an unsigned long * use pci_disable_device The resulting code is tested and seems to work fine... Signed-off-by: Arthur Jones <ajones@riverbed.com> Cc: Doug Thompson <dougthompson@xmission.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
* edac: i5100 fix unmask ecc bitsArthur Jones2008-07-25
| | | | | | | | | Explicitly unmask ECC errors we are interested in reporting. Signed-off-by: Arthur Jones <ajones@riverbed.com> Signed-off-by: Doug Thompson <dougthompson@xmission.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
* edac: i5100 fix enable ecc hardwareArthur Jones2008-07-25
| | | | | | | | | | It is possible that the BIOS did not enable ECC at boot time. We check for that case and fail to load if it is true. Signed-off-by: Arthur Jones <ajones@riverbed.com> Signed-off-by: Doug Thompson <dougthompson@xmission.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
* edac: i5100 fix missing bitsArthur Jones2008-07-25
| | | | | | | | | | | The error mask we use to trigger ECC notifications is missing many bits of interest. We add these bits here so that all possible ECC errors can be reported. Signed-off-by: Arthur Jones <ajones@riverbed.com> Signed-off-by: Doug Thompson <dougthompson@xmission.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
* edac: i5100 new intel chipset driverArthur Jones2008-07-25
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Preliminary support for the Intel 5100 MCH. CE and UE errors are reported along with the current DIMM label information and other memory parameters. Reasons why this is preliminary: 1) This chip has 2 independent memory controllers which, for best perforance, use interleaved accesses to the DDR2 memory. This architecture does not map very well to the current edac data structures which depend on symmetric channel access to the interleaved data. Without core changes, the best I could do for now is to map both memory controllers to different csrows (first all ranks of controller 0, then all ranks of controller 1). Someone much more familiar with the edac core than I will probably need to come up with a more general data structure to handle the interleaving and de-interleaving of the two memory controllers. 2) I have not yet tackled the de-interleaving of the rank/controller address space into the physical address space of the CPU. There is nothing fundamentally missing, it is just ending up to be a lot of code, and I'd rather keep it separate for now, esp since it doesn't work yet... 3) The code depends on a particular i5100 chip select to DIMM mainboard chip select mapping. This mapping seems obvious to me in order to support dual and single ranked memory, but it is not unique and DIMM labels could be wrong on other mainboards. There is no way to query this mapping that I know of. 4) The code requires that the i5100 is in 32GB mode. Only 4 ranks per controller, 2 ranks per DIMM are supported. I do not have hardware (nor do I expect to have hardware anytime soon) for the 48GB (6 ranks per controller) mode. 5) The serial presence detect code should be broken out into a "real" i2c driver so that decode-dimms.pl can work. Signed-off-by: Arthur Jones <ajones@riverbed.com> Signed-off-by: Doug Thompson <dougthompson@xmission.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
* aoe: convert emsgs_sema into a completionMatthias Kaehlcke2008-07-25
| | | | | | | | | | ATA over Ethernet: The semaphore emsgs_sema is used for signalling an event, convert it in a completion. Signed-off-by: Matthias Kaehlcke <matthias@kaehlcke.net> Cc: "Ed L. Cashin" <ecashin@coraid.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
* unexport proc_clear_ttyAdrian Bunk2008-07-25
| | | | | | | | | | | With the removal of the Solaris binary emulation the export of proc_clear_tty became unused. Signed-off-by: Adrian Bunk <bunk@kernel.org> Acked-by: David S. Miller <davem@davemloft.net> Acked-by: Alan Cox <alan@redhat.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
* dell_rbu: use memory_read_from_buffer()Akinobu Mita2008-07-25
| | | | | | | | | Signed-off-by: Akinobu Mita <akinobu.mita@gmail.com> Cc: Abhay Salunke <Abhay_Salunke@dell.com> Cc: Zhang Rui <rui.zhang@intel.com> Cc: Matt Domsch <Matt_Domsch@dell.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
* dcdbas: use memory_read_from_buffer()Akinobu Mita2008-07-25
| | | | | | | | | Signed-off-by: Akinobu Mita <akinobu.mita@gmail.com> Cc: Doug Warzecha <Douglas_Warzecha@dell.com> Cc: Zhang Rui <rui.zhang@intel.com> Cc: Matt Domsch <Matt_Domsch@dell.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
* firmware: use memory_read_from_buffer()Akinobu Mita2008-07-25
| | | | | | | | | Signed-off-by: Akinobu Mita <akinobu.mita@gmail.com> Cc: Greg Kroah-Hartman <gregkh@suse.de> Cc: Markus Rechberger <markus.rechberger@amd.com> Cc: Kay Sievers <kay.sievers@vrfy.org> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
* drivers/misc/phantom: note PCIJiri Slaby2008-07-25
| | | | | | | | | Tell users that the driver is only for PCI devices to stop asking for support of firewire and parallel devices. 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>
* Char: mxser, various cleanupsJiri Slaby2008-07-25
| | | | | | | | | | | - remove unused macro - some whitespace cleanup - useless debug prints removal Signed-off-by: Jiri Slaby <jirislaby@gmail.com> Acked-by: Alan Cox <alan@redhat.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
* Char: mxser, remove predefined isa supportJiri Slaby2008-07-25
| | | | | | | | | | | Remove a support of ISA addresses predefined at compile time. It is unused (filled by zeroes) and prolongs the code. Don't initialize global array and add `ioaddr' module param description. Signed-off-by: Jiri Slaby <jirislaby@gmail.com> Acked-by: Alan Cox <alan@redhat.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
* Char: mxser, prints cleanupJiri Slaby2008-07-25
| | | | | | | | | | | | - use dev_* for printing in pci probe function - move ISA p[rints directly into isa find function, do not postpone it. Remove macros bound to it then. - prepend some prints by "mxser: " to know what it belongs to Signed-off-by: Jiri Slaby <jirislaby@gmail.com> Acked-by: Alan Cox <alan@redhat.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
* Char: mxser, globals cleanupJiri Slaby2008-07-25
| | | | | | | | | | | | | | | - remove unused mxvar_diagflag - move mxser_msr into the only user/function - GMStatus, hmm, fix race-prone access to it. We need only one instance for real, not MXSER_PORTS. Move it to MOXA_GETMSTATUS ioctl. - mxser_mon_ext, almost the same, but alloc it on heap, since it has more than 2 kilos. - fix indexing, `i' is not the index value, `i * MXSER_PORTS_PER_BOARD + j' is Signed-off-by: Jiri Slaby <jirislaby@gmail.com> Acked-by: Alan Cox <alan@redhat.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
* Char: mxser, ioctl cleanupJiri Slaby2008-07-25
| | | | | | | | | | | | | - remove break ctl from ioctl handler, it's never reached, since tty_ops->break_ctl is defined (mxser break handling is done in software) - mark MOXA_GET_MAJOR as deprecated - fix TIOCGICOUNT (some retval non-checks of put_user). Use copy_to_user to whole structure instead. Signed-off-by: Jiri Slaby <jirislaby@gmail.com> Acked-by: Alan Cox <alan@redhat.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
* nwflash: use simple_read_from_buffer()Akinobu Mita2008-07-25
| | | | | | | | Signed-off-by: Akinobu Mita <akinobu.mita@gmail.com> Cc: Russell King <linux@arm.linux.org.uk> Cc: Tim Schmielau <tim@physik3.uni-rostock.de> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
* dsp56k: BKL pushdownAlan Cox2008-07-25
| | | | | | | | | Push the BKL down into the driver ioctl methods Signed-off-by: Alan Cox <alan@redhat.com> Cc: Jiri Slaby <jirislaby@gmail.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
* ds1302: push down the BKL into the driver ioctl codeAlan Cox2008-07-25
| | | | | | | Signed-off-by: Alan Cox <alan@redhat.com> Cc: Jiri Kosina <jkosina@suse.cz> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
* ppdev: wrap ioctl handler in driver and push lock downAlan Cox2008-07-25
| | | | | | | Signed-off-by: Alan Cox <alan@redhat.com> Cc: Jiri Slaby <jirislaby@gmail.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
* ixj: push BKL into driver and wrap ioctlsAlan Cox2008-07-25
| | | | | | | | Signed-off-by: Alan Cox <alan@redhat.com> Cc: Nishanth Aravamudan <nacc@us.ibm.com> Cc: Domen Puncer <domen@coderock.org> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
* sx: push BKL down into the firmware ioctl handlerAlan Cox2008-07-25
| | | | | | | | | Also fix the capability checking for firmware load. Signed-off-by: Alan Cox <alan@redhat.com> Cc: Jiri Slaby <jirislaby@gmail.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
* rio: push down the BKL into the firmware ioctl handlerAlan Cox2008-07-25
| | | | | | | | | TTY side is already done. Signed-off-by: Alan Cox <alan@redhat.com> Cc: Jiri Slaby <jirislaby@gmail.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
* mwave: ioctl BKL pushdownAlan Cox2008-07-25
| | | | | | | | | | Push the BKL down to the point it wraps the actual mwave method handlers Signed-off-by: Alan Cox <alan@redhat.com> Cc: Eric Sesterhenn <snakebyte@gmx.de> Cc: Yani Ioannou <yani.ioannou@gmail.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
* ip2: push BKL down for the firmware interfaceAlan Cox2008-07-25
| | | | | | | | | (The tty side is already done) Signed-off-by: Alan Cox <alan@redhat.com> Cc: Jiri Slaby <jirislaby@gmail.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
* efirtc: push down the BKLAlan Cox2008-07-25
| | | | | | | | | | Push it down as far as the EFI method calls. Someone who knows EFI can do the other bits. Also fix another wrong unknown ioctl return. Signed-off-by: Alan Cox <alan@redhat.com> Cc: Joe Perches <joe@perches.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
* #if 0 hpet_unregister()Adrian Bunk2008-07-25
| | | | | | | | | This patch #if 0's the unused hpet_unregister(). Signed-off-by: Adrian Bunk <bunk@kernel.org> Acked-by: Clemens Ladisch <clemens@ladisch.de> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
* proper extern for mwave_s_mddAdrian Bunk2008-07-25
| | | | | | | | | This patch adds a proper extern for mwave_s_mdd in drivers/char/mwave/mwavedd.h Signed-off-by: Adrian Bunk <bunk@kernel.org> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
* gpio: max732x driverEric Miao2008-07-25
| | | | | | | | | | | | | This adds a driver supporting a family of I2C port expanders from Maxim, which includes the MAX7319 and MAX7320-7327 chips. [dbrownell@users.sourceforge.net: minor fixes] Signed-off-by: Jack Ren <jack.ren@marvell.com> Signed-off-by: Eric Miao <eric.miao@marvell.com> Acked-by: Jean Delvare <khali@linux-fr.org> 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>
* gpiolib: allow user-selectionMichael Buesch2008-07-25
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | This patch adds functionality to the gpio-lib subsystem to make it possible to enable the gpio-lib code even if the architecture code didn't request to get it built in. The archtitecture code does still need to implement the gpiolib accessor functions in its asm/gpio.h file. This patch adds the implementations for x86 and PPC. With these changes it is possible to run generic GPIO expansion cards on every architecture that implements the trivial wrapper functions. Support for more architectures can easily be added. Signed-off-by: Michael Buesch <mb@bu3sch.de> Cc: Benjamin Herrenschmidt <benh@kernel.crashing.org> Cc: Stephen Rothwell <sfr@canb.auug.org.au> Cc: David Brownell <david-b@pacbell.net> Cc: Russell King <rmk@arm.linux.org.uk> Cc: Haavard Skinnemoen <hskinnemoen@atmel.com> Cc: Jesper Nilsson <jesper.nilsson@axis.com> Cc: Ralf Baechle <ralf@linux-mips.org> Cc: Paul Mackerras <paulus@samba.org> Cc: Benjamin Herrenschmidt <benh@kernel.crashing.org> Cc: Ingo Molnar <mingo@elte.hu> Cc: Thomas Gleixner <tglx@linutronix.de> Cc: Jean Delvare <khali@linux-fr.org> Cc: Samuel Ortiz <sameo@openedhand.com> Cc: Kumar Gala <galak@gate.crashing.org> Cc: Sam Ravnborg <sam@ravnborg.org> Cc: Adrian Bunk <bunk@stusta.de> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
* gpio: add bt8xxgpio driverMichael Buesch2008-07-25
| | | | | | | | | | | | | | | | | This adds the bt8xxgpio driver. The purpose of the bt8xxgpio driver is to export all of the 24 GPIO pins available on Brooktree 8xx chips to the kernel GPIO infrastructure. This makes it possible to use a physically modified BT8xx card as cheap digital GPIO card. [akpm@linux-foundation.org: coding-style fixes] Signed-off-by: Michael Buesch <mb@bu3sch.de> Cc: David Brownell <david-b@pacbell.net> Cc: Stephen Rothwell <sfr@canb.auug.org.au> Cc: Mauro Carvalho Chehab <mchehab@infradead.org> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
* gpio: mcp23s08 handles multiple chips per chipselectDavid Brownell2008-07-25
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Teach the mcp23s08 driver about a curious feature of these chips: up to four of them can share the same chipselect, with the SPI signals wired in parallel, by matching two bits in the first protocol byte against two address lines on the chip. This is handled by three software changes: * Platform data now holds an array of per-chip structs, not just one chip's address and pullup configuration. * Probe() and remove() now use another level of structure, wrapping an instance of the original structure for each mcp23s08 chip sharing that chipselect. * The HAEN bit is set, so that the hardware address bits can no longer be ignored (boot firmware may not have enabled them). The "one struct per chip" preserves the guts of the current code, but platform_data will need minor changes. OLD: /* incorrect "slave" ID may not have mattered */ .slave = 3, .pullups = BIT(3) | BIT(1) | BIT(0), NEW: /* slave address _must_ match chip's wiring */ .chip[3] = { .is_present = true, .pullups = BIT(3) | BIT(1) | BIT(0), }, There's no change in how things _behave_ for spi_device nodes with a single mcp23s08 chip. New multi-chip configurations assign GPIOs in sequence, without holes. The spi_device just resembles a bigger controller, but internally it has multiple gpio_chip instances. 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>
* gpio: sysfs interfaceDavid Brownell2008-07-25
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | This adds a simple sysfs interface for GPIOs. /sys/class/gpio /export ... asks the kernel to export a GPIO to userspace /unexport ... to return a GPIO to the kernel /gpioN ... for each exported GPIO #N /value ... always readable, writes fail for input GPIOs /direction ... r/w as: in, out (default low); write high, low /gpiochipN ... for each gpiochip; #N is its first GPIO /base ... (r/o) same as N /label ... (r/o) descriptive, not necessarily unique /ngpio ... (r/o) number of GPIOs; numbered N .. N+(ngpio - 1) GPIOs claimed by kernel code may be exported by its owner using a new gpio_export() call, which should be most useful for driver debugging. Such exports may optionally be done without a "direction" attribute. Userspace may ask to take over a GPIO by writing to a sysfs control file, helping to cope with incomplete board support or other "one-off" requirements that don't merit full kernel support: echo 23 > /sys/class/gpio/export ... will gpio_request(23, "sysfs") and gpio_export(23); use /sys/class/gpio/gpio-23/direction to (re)configure it, when that GPIO can be used as both input and output. echo 23 > /sys/class/gpio/unexport ... will gpio_free(23), when it was exported as above The extra D-space footprint is a few hundred bytes, except for the sysfs resources associated with each exported GPIO. The additional I-space footprint is about two thirds of the current size of gpiolib (!). Since no /dev node creation is involved, no "udev" support is needed. Related changes: * This adds a device pointer to "struct gpio_chip". When GPIO providers initialize that, sysfs gpio class devices become children of that device instead of being "virtual" devices. * The (few) gpio_chip providers which have such a device node have been updated. * Some gpio_chip drivers also needed to update their module "owner" field ... for which missing kerneldoc was added. * Some gpio_chips don't support input GPIOs. Those GPIOs are now flagged appropriately when the chip is registered. Based on previous patches, and discussion both on and off LKML. A Documentation/ABI/testing/sysfs-gpio update is ready to submit once this merges to mainline. [akpm@linux-foundation.org: a few maintenance build fixes] Signed-off-by: David Brownell <dbrownell@users.sourceforge.net> Cc: Guennadi Liakhovetski <g.liakhovetski@pengutronix.de> Cc: Greg KH <greg@kroah.com> Cc: Kay Sievers <kay.sievers@vrfy.org> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
* mfd: sm501 fix gpio number calculation for upper bankBen Dooks2008-07-25
| | | | | | | | | The sm501_gpio_pin2nr() routine returns the wrong values for gpios in the upper bank. Signed-off-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>
* mfd: sm501 build fixes when CONFIG_MFD_SM501_GPIO unsetBen Dooks2008-07-25
| | | | | | | | | | | Fix the build problems if CONFIG_MFD_SM501_GPIO is not set, which is generally when there is no gpiolib support available as currently happens on x86 when building PCI SM501. Signed-off-by: Ben Dooks <ben-linux@fluff.org> Tested-by: Li Zefan <lizf@cn.fujitsu.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
* sm501: fixes for akpms comments on gpiolib additionBen Dooks2008-07-25
| | | | | | | | | | Fixup the comments from the patch that added the gpiolib support from Andrew Morton. These include spotting some missing frees on error or release, and changing a memcpy for a type-safe assingment. Signed-off-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>
* sm501: gpio I2C supportBen Dooks2008-07-25
| | | | | | | | | | Add support for adding the GPIO based I2C resources. Signed-off-by: Ben Dooks <ben-linux@fluff.org> Cc: Arnaud Patard <apatard@mandriva.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>
* sm501: gpio dynamic registration for PCI devicesArnaud Patard2008-07-25
| | | | | | | | | | | | The SM501 PCI card requires a dyanmic gpio allocation as the number of cards is not known at compile time. Fixup the platform data and registration to deal with this. Acked-by: Ben Dooks <ben-linux@fluff.org> Signed-off-by: Arnaud Patard <apatard@mandriva.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>
* sm501: add gpiolib supportBen Dooks2008-07-25
| | | | | | | | | | Add support for exporting the GPIOs on the SM501 via gpiolib. Signed-off-by: Ben Dooks <ben-linux@fluff.org> Cc: Arnaud Patard <apatard@mandriva.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>
* sm501: add power control callbackBen Dooks2008-07-25
| | | | | | | | | | Add callback to get or set the power control if the device has the sleep connected to some form of GPIO. Signed-off-by: Ben Dooks <ben-linux@fluff.org> Cc: Arnaud Patard <apatard@mandriva.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
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