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path: root/drivers/i2c
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2008-04-29i2c: Convert most new-style drivers to use module aliasingJean Delvare
Based on earlier work by Jon Smirl and Jochen Friedrich. Update most new-style i2c drivers to use standard module aliasing instead of the old driver_name/type driver matching scheme. I've left the video drivers apart (except for SoC camera drivers) as they're a bit more diffcult to deal with, they'll have their own patch later. Signed-off-by: Jean Delvare <khali@linux-fr.org> Cc: Jon Smirl <jonsmirl@gmail.com> Cc: Jochen Friedrich <jochen@scram.de>
2008-04-29i2c: Add support for device alias namesJean Delvare
Based on earlier work by Jon Smirl and Jochen Friedrich. This patch allows new-style i2c chip drivers to have alias names using the official kernel aliasing system and MODULE_DEVICE_TABLE(). At this point, the old i2c driver binding scheme (driver_name/type) is still supported. Signed-off-by: Jean Delvare <khali@linux-fr.org> Cc: Jochen Friedrich <jochen@scram.de> Cc: Jon Smirl <jonsmirl@gmail.com> Cc: Kay Sievers <kay.sievers@vrfy.org>
2008-04-29i2c-amd756-s4882: Fix an error pathJean Delvare
If initialization fails, we want to restore the physical bus, not delete it again. Signed-off-by: Jean Delvare <khali@linux-fr.org>
2008-04-29i2c/tps65010: Add missing intialization of client dataJean Delvare
tps65010_remove() calls i2c_get_clientdata(client) but the client data is never set during initialization, so it gets a NULL pointer at best. I guess it was never spotted because the tps65010 driver is typically not built modular so this function is discarded. Signed-off-by: Jean Delvare <khali@linux-fr.org> Cc: David Brownell <dbrownell@users.sourceforge.net>
2008-04-29i2c-sis5595: Minor cleanups in sis5595_accessJean Delvare
* Remove commented-out code. * Use dev_warn instead of printk. * Remove a legacy comment. Signed-off-by: Jean Delvare <khali@linux-fr.org>
2008-04-29i2c-piix4: Minor cleanupsJean Delvare
* Remove a needless include. * Remove a legacy comment in piix4_access. * Minor optimization in piix4_access. Signed-off-by: Jean Delvare <khali@linux-fr.org>
2008-04-29i2c: Spelling fix (successful)Jean Delvare
Signed-off-by: Jean Delvare <khali@linux-fr.org>
2008-04-29i2c-stub: No newline in parameter descriptionJean Delvare
Signed-off-by: Jean Delvare <khali@linux-fr.org>
2008-04-22i2c: Fix platform driver hotplug/coldplugKay Sievers
Since 43cc71eed1250755986da4c0f9898f9a635cb3bf, the platform modalias is prefixed with "platform:". Add MODULE_ALIAS() to the hotpluggable I2C platform drivers, to allow module auto loading. [ db: add some more drivers ] Signed-off-by: Kay Sievers <kay.sievers@vrfy.org> Signed-off-by: David Brownell <dbrownell@users.sourceforge.net> Signed-off-by: Jean Delvare <khali@linux-fr.org>
2008-04-22i2c: New driver for the SuperH Mobile I2C bus controllerMagnus Damm
This is V5 of the SuperH Mobile I2C Controller Driver. A simple Master only driver for the I2C block included in processors such as sh7343, sh7722 and sh7723. Tested on a sh7722 MigoR using a rs5c732b rtc. Signed-off-by: Magnus Damm <damm@igel.co.jp> Signed-off-by: Paul Mundt <lethal@linux-sh.org> Signed-off-by: Jean Delvare <khali@linux-fr.org>
2008-04-22i2c/scx200_acb: Don't use 0 as NULL pointerAdrian Bunk
Don't use 0 as NULL pointer. Spotted by sparse. Signed-off-by: Adrian Bunk <bunk@kernel.org> Signed-off-by: Jean Delvare <khali@linux-fr.org>
2008-04-22i2c-bfin-twi: Fix mismatch in add timer and delete timerHans Schillstrom
Move init_completion to just before i2c transfer. http://blackfin.uclinux.org/gf/project/uclinux-dist/tracker/?action=TrackerItemEdit&tracker_item_id=3385 Signed-off-by: Hans Schillstrom <hans.schillstrom@shlsys.com> Signed-off-by: Sonic Zhang <sonic.zhang@analog.com> Signed-off-by: Bryan Wu <cooloney@kernel.org> Signed-off-by: Jean Delvare <khali@linux-fr.org>
2008-04-22i2c-bfin-twi: Just let i2c-bfin-twi driver depends on BLACKFINBryan Wu
Simply use "depends on BLACKFIN" (which is technically correct) and just document which machines have the device. Signed-off-by: Bryan Wu <cooloney@kernel.org> Signed-off-by: Jean Delvare <khali@linux-fr.org>
2008-04-22i2c-bfin-twi: Use simpler comment headers and strip out information that is ↵Mike Frysinger
maintained in the scm's log Signed-off-by: Mike Frysinger <vapier.adi@gmail.com> Signed-off-by: Bryan Wu <cooloney@kernel.org> Signed-off-by: Jean Delvare <khali@linux-fr.org>
2008-04-22i2c-bfin-twi: Cleanup driver descriptions, versions and some module useful ↵Bryan Wu
information Signed-off-by: Bryan Wu <cooloney@kernel.org> Signed-off-by: Jean Delvare <khali@linux-fr.org>
2008-04-22i2c-bfin-twi: Add missing pin mux operationBryan Wu
Blackfin TWI controller hardware pin should be requested from GPIO port controller Before BF54x, there is no need to do this. But as long as BF54x and BF52x are supported by this generic driver, the missing pin mux operation should be added. Signed-off-by: Bryan Wu <cooloney@kernel.org> Signed-off-by: Jean Delvare <khali@linux-fr.org>
2008-04-22i2c-bfin-twi: Add platform_resource interface to support multi-port TWI ↵Bryan Wu
controllers - Dynamic alloc the resource of TWI driver data according to board information - TWI register read/write accessor based on dynamic regs_base - Support TWI0/TWI1 for BF54x Signed-off-by: Bryan Wu <cooloney@kernel.org> Signed-off-by: Jean Delvare <khali@linux-fr.org>
2008-04-22i2c-bfin-twi: Add repeat start feature to avoid break of a bundle of i2c ↵Sonic Zhang
master xfer operation - Create a new mode TWI_I2C_MODE_REPEAT. - No change to smbus operation. Signed-off-by: Sonic Zhang <sonic.zhang@analog.com> Signed-off-by: Bryan Wu <cooloney@kernel.org> Signed-off-by: Jean Delvare <khali@linux-fr.org>
2008-04-22i2c: Remove trailing whitespaces in busses/KconfigWolfram Sang
Signed-off-by: Wolfram Sang <w.sang@pengutronix.de> Signed-off-by: Jean Delvare <khali@linux-fr.org>
2008-04-22i2c: Replace remaining __FUNCTION__ occurrencesHarvey Harrison
__FUNCTION__ is gcc-specific, use __func__. Signed-off-by: Harvey Harrison <harvey.harrison@gmail.com> Signed-off-by: Jean Delvare <khali@linux-fr.org>
2008-04-22i2c: Renesas SH7760 I2C master driverManuel Lauss
Driver for I2C interfaces in master mode on SH7760. Signed-off-by: Manuel Lauss <mano@roarinelk.homelinux.net> Signed-off-by: Jean Delvare <khali@linux-fr.org>
2008-04-22i2c-dev: Split i2cdev_ioctlJean Delvare
Split the handling of the I2C_RDWR and I2C_SMBUS ioctls to their own functions. This limits the stack usage, saves one level of indentation and makes the code more readable. Signed-off-by: Jean Delvare <khali@linux-fr.org>
2008-04-22i2c-ibm_iic: Support building as an of_platform driverSean MacLennan
This patch allows the i2c-ibm_iic driver to be built either as an ocp driver or an of_platform driver. This allows it to run under the powerpc arch but maintains backward compatibility with the ppc arch. Signed-off-by: Sean MacLennan <smaclennan@pikatech.com> Signed-off-by: Jean Delvare <khali@linux-fr.org>
2008-04-22i2c-ibm_iic: Change the log levelsSean MacLennan
Change the log levels based on feedback from linxppc-dev. Signed-off-by: Sean MacLennan <smaclennan@pikatech.com> Signed-off-by: Jean Delvare <khali@linux-fr.org>
2008-04-22i2c: Add platform driver on top of the new pca-algorithmWolfram Sang
Tested on a blackfin. Signed-off-by: Wolfram Sang <w.sang@pengutronix.de> Signed-off-by: Jean Delvare <khali@linux-fr.org>
2008-04-22i2c-algo-pca: Extend for future driversWolfram Sang
The separation between algorithm and adapter was unsharp at places. This was partly hidden by the fact, that the ISA-driver allowed just one instance and had all private data in static variables. This patch makes neccessary preparations to add a platform driver on top of the algorithm, while still supporting ISA. Note: Due to lack of hardware, the ISA-driver could not be tested except that it builds. Concerning the core struct i2c_algo_pca_data: - A private data field was added, all hardware dependant data may go here. Similar to other algorithms, now a pointer to this data is passed to the adapter's functions. In order to make as less changes as possible to the ISA-driver, it leaves the private data empty and still only uses its static variables. - A "reset_chip" function pointer was added; such a functionality must come from the adapter, not the algorithm. - use a variable "i2c_clock" instead of a function pointer "get_clock", allowing for write access to a default in case a wrong value was supplied. In the algorithm-file: - move "i2c-pca-algo.h" into "linux/i2c-algo-pca.h" - now using per_instance timeout values (i2c_adap->timeout) - error messages specify the device, not only the driver name - restructure initialization to easily support "i2c_add_numbered_adapter" - drop "retries" and "own" (i2c address) as they were unused (The state-machine for I2C-communication was not touched.) In the ISA-driver: - adapt to new algorithm Signed-off-by: Wolfram Sang <w.sang@pengutronix.de> Signed-off-by: Jean Delvare <khali@linux-fr.org>
2008-04-22i2c-algo-pca: Remove trailing whitespaces and unnecessary UTFWolfram Sang
Remove trailing whitespaces to make further patches more readable. Also remove an unnecessary UTF-char for simplicity ("us" for microseconds is fine enough). Signed-off-by: Wolfram Sang <w.sang@pengutronix.de> Signed-off-by: Jean Delvare <khali@linux-fr.org>
2008-04-22i2c: Remove the algorithm drivers from the config menuJean Delvare
The algorithm drivers are helper drivers that are selected automatically as needed. There's no point in listing them in the config menu, it can only confuse users and waste their time. Signed-off-by: Jean Delvare <khali@linux-fr.org>
2008-04-21Merge branch 'semaphore' of ↵Linus Torvalds
git://git.kernel.org/pub/scm/linux/kernel/git/willy/misc * 'semaphore' of git://git.kernel.org/pub/scm/linux/kernel/git/willy/misc: Deprecate the asm/semaphore.h files in feature-removal-schedule. Convert asm/semaphore.h users to linux/semaphore.h security: Remove unnecessary inclusions of asm/semaphore.h lib: Remove unnecessary inclusions of asm/semaphore.h kernel: Remove unnecessary inclusions of asm/semaphore.h include: Remove unnecessary inclusions of asm/semaphore.h fs: Remove unnecessary inclusions of asm/semaphore.h drivers: Remove unnecessary inclusions of asm/semaphore.h net: Remove unnecessary inclusions of asm/semaphore.h arch: Remove unnecessary inclusions of asm/semaphore.h
2008-04-19Merge branch 'omap2-upstream' into develRussell King
2008-04-19Merge branches 'arm', 'at91', 'ep93xx', 'iop', 'ks8695', 'misc', 'mxc', ↵Russell King
'ns9x', 'orion', 'pxa', 'sa1100', 's3c' and 'sparsemem' into devel
2008-04-19[ARM] pxa: separate GPIOs and their mode definitions to pxa2xx-gpio.heric miao
two reasons: 1. GPIO namings and their mode definitions are conceptually not part of the PXA register definitions 2. this is actually a temporary move in the transition of PXA2xx to use MFP-alike APIs (as what PXA3xx is now doing), so that legacy code will still work and new code can be added in step by step Signed-off-by: eric miao <eric.miao@marvell.com> Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
2008-04-18Convert asm/semaphore.h users to linux/semaphore.hMatthew Wilcox
Signed-off-by: Matthew Wilcox <willy@linux.intel.com>
2008-04-14ARM: OMAP: I2C: tps65010 driver converts to gpiolibDavid Brownell
Make the tps65010 driver use gpiolib to expose its GPIOs. Note: This patch will get merged via omap tree instead of I2C as it will cause some board updates. This has been discussed at on the I2C list: http://lists.lm-sensors.org/pipermail/i2c/2008-March/003031.html Signed-off-by: David Brownell <dbrownell@users.sourceforge.net> Cc: i2c@lm-sensors.org Signed-off-by: Tony Lindgren <tony@atomide.com>
2008-04-11i2c-tiny-usb: New VID/PID pairTill Harbaum
I have recently bought some USB PIDs from EZPrototypes for my USB projects and one will be for the i2c-tiny-usb. I have not yet started to use the new one in the official i2c-tiny-usb firmware since i think it makes sense to get the change into the kernel before releasing a modified firmware. This patch adds support for the EZPrototypes USB vid/pid pair used in later i2c-tiny-usb firmware versions (avrusb v1.06 and up, usbtiny v2.06 and up). Signed-off-by: Till Harbaum <Till@Harbaum.org> Signed-off-by: Jean Delvare <khali@linux-fr.org>
2008-04-11i2c-davinci: Fix lost interruptTroy Kisky
DAVINCI_I2C_STR_REG is a write 1 to clear register, so don't use a read/modify/write cycle. Signed-off-by: Troy Kisky <troy.kisky@boundarydevices.com> Acked-by: Dirk Behme <dirk.behme@gmail.com> Signed-off-by: Kevin Hilman <khilman@mvista.com> Signed-off-by: Jean Delvare <khali@linux-fr.org>
2008-04-11i2c-ibm_iic: Fast mode parm desc fixupPaul Mundt
Noticed this when grepping for fast mode module params, the i2c-ibm_iic driver was using a non-existent variable for MODULE_PARM_DESC. Fix it up to reflect what it's actually supposed to be describing. Signed-off-by: Paul Mundt <lethal@linux-sh.org> Signed-off-by: Jean Delvare <khali@linux-fr.org>
2008-03-27plat-orion: make i2c-mv64xxx available for all Orion familiesLennert Buytenhek
Signed-off-by: Lennert Buytenhek <buytenh@marvell.com> Reviewed-by: Tzachi Perelstein <tzachi@marvell.com> Acked-by: Russell King <rmk+kernel@arm.linux.org.uk> Signed-off-by: Nicolas Pitre <nico@marvell.com>
2008-03-23i2c: Fix docbook problemRandy Dunlap
Sometimes kernel-doc and xmlto conspire to create output that is invalid and causes problems. Until I know a real/better solution, change the source code that causes this. If anyone has better fixes or can just explain what is happening here, that would be great. xmlto: input does not validate (status 1) mmotm-2008-0314-1449/Documentation/DocBook/kernel-api.xml:71468: parser error : Opening and ending tag mismatch: programlisting line 71464 and para </para><para> ^ mmotm-2008-0314-1449/Documentation/DocBook/kernel-api.xml:71480: parser error : Opening and ending tag mismatch: para line 71473 and programlisting </programlisting></informalexample> ^ make[1]: *** [Documentation/DocBook/kernel-api.html] Error 1 Signed-off-by: Randy Dunlap <randy.dunlap@oracle.com> Signed-off-by: Jean Delvare <khali@linux-fr.org>
2008-03-23i2c-omap: Fix unhandled faultTony Lindgren
If an I2C interrupt happens between disabling interface clock and functional clock, the interrupt handler will produce an external abort on non-linefetch error when trying to access driver registers while interface clock is disabled. This patch fixes the problem by saving and disabling i2c-omap interrupt before turning off the clocks. Also disable functional clock before the interface clock as suggested by Paul Walmsley. Patch also renames enable/disable_clocks functions to unidle/idle functions. Note that the driver is currently not taking advantage of the idle interrupts. To use the idle interrupts, driver would have to enable interface clock based on the idle interrupt and dev->idle flag. This patch has been tested in linux-omap tree with various omaps. Cc: Paul Walmsley <paul@pwsan.com> Signed-off-by: Tony Lindgren <tony@atomide.com> Signed-off-by: Jean Delvare <khali@linux-fr.org>
2008-03-23i2c-bfin-twi: Disable BF54x support for nowBryan Wu
The i2c-bfin-twi driver doesn't support BF54x for now due to missing header definitions causing the build to fail. Exclude it for now, it will be enabled again later. Signed-off-by: Bryan Wu <cooloney@kernel.org> Signed-off-by: Jean Delvare <khali@linux-fr.org>
2008-03-12i2c: chips subdirectory is deprecatedJean Delvare
Let driver authors know that drivers/i2c/chips is usually the wrong place for new drivers. Signed-off-by: Jean Delvare <khali@linux-fr.org>
2008-03-12i2c: Keep client->driver and client->dev.driver in syncHans Verkuil
Ensure that client->driver is set to NULL if the probe() returns an error (this keeps client->driver and client->dev.driver in sync). Signed-off-by: Hans Verkuil <hverkuil@xs4all.nl> Acked-by: David Brownell <dbrownell@users.sourceforge.net> Signed-off-by: Jean Delvare <khali@linux-fr.org>
2008-03-12i2c-amd756: Fix off-by-oneAdrian Bunk
This patch fixes an off-by-one error spotted by the Coverity checker. Signed-off-by: Adrian Bunk <bunk@kernel.org> Signed-off-by: Jean Delvare <khali@linux-fr.org>
2008-02-24i2c-i801: Add support for the ICH10Gaston, Jason D
Add the Intel ICH10 SMBus Controller DeviceID's and updates Tolapai support. Signed-off-by: Jason Gaston <jason.d.gaston@intel.com> Signed-off-by: Jean Delvare <khali@linux-fr.org>
2008-02-24i2c-pca-isa: Add access check to legacy ioportsChristian Krafft
When probing i2c-pca-isa writes to legacy ioports, which crashes the kernel if there is no device at that port. This patch adds a check_legacy_ioport call, so probe fails gracefully and thus prevents the oops. Signed-off-by: Christian Krafft <krafft@de.ibm.com> Signed-off-by: Jean Delvare <khali@linux-fr.org>
2008-02-24i2c: Storage class should be before const qualifierTobias Klauser
The C99 specification states in section 6.11.5: The placement of a storage-class specifier other than at the beginning of the declaration specifiers in a declaration is an obsolescent feature. Signed-off-by: Tobias Klauser <tklauser@distanz.ch> Signed-off-by: Jean Delvare <khali@linux-fr.org>
2008-02-24i2c-pxa: Misc fixesWolfram Sang
While working on the PCA9564-platform driver, I sometimes had a glimpse at the pxa-driver. I found some suspicious places, and this patch contains my suggestions. Note: They are not tested, due to no hardware. [JD: Some more fixes.] Signed-off-by: Wolfram Sang <w.sang@pengutronix.de> Signed-off-by: Jean Delvare <khali@linux-fr.org> Tested-by: Mike Rapoport <mike@compulab.co.il> Tested-by: Eric Miao <ymiao3@marvell.com>
2008-02-17[ARM] 4827/1: fix two warnings in drivers/i2c/busses/i2c-pxa.cHolger Schurig
This fixes two warnings: * unused static defined function decode_ICR() when compiled without CONFIG_I2C_PXA_SLAVE * a sparse warning about a void function returning something Signed-off-by: Holger Schurig <hs4233@mail.mn-solutions.de> Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
2008-02-07hwmon: Discard useless I2C driver IDsJean Delvare
Many I2C hwmon drivers define a driver ID but no other code references these, meaning that they are useless. Discard them, along with a few IDs which are defined but never used at all. Signed-off-by: Jean Delvare <khali@linux-fr.org> Signed-off-by: Mark M. Hoffman <mhoffman@lightlink.com>
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