aboutsummaryrefslogtreecommitdiff
path: root/Documentation/i2c
AgeCommit message (Collapse)Author
2007-05-01i2c: Documentation updateJean Delvare
Make the documentation on how to write and port i2c drivers more in line with the current state of things: * i2c-isa is deprecated and soon gone, so stop advertising it. * Drop many sensors-specific references. Most of them were outdated anyway. * Update the example code to reflect the recent and not-so-recent API and coding style preference changes. * Simplify the example init and cleanup functions. This should make things less complex to understand for newcomers. Signed-off-by: Jean Delvare <khali@linux-fr.org>
2007-05-01i2c: Make i2c_del_driver a void functionJean Delvare
Make i2c_del_driver a void function, like all other driver removal functions. It always returned 0 even when errors occured, and nobody ever actually checked the return value anyway. And we cannot fail a module removal anyway. Signed-off-by: Jean Delvare <khali@linux-fr.org>
2007-05-01i2c: Document i2c_new_device()Jean Delvare
Document the new i2c_new_device(), i2c_new_probed_device() and i2c_unregister_device() functions. Signed-off-by: Jean Delvare <khali@linux-fr.org>
2007-05-01i2c: i2c probe() and remove() documentedDavid Brownell
Update Documentation/i2c to match previous patches updating probe() and remove() logic. Signed-off-by: David Brownell <dbrownell@users.sourceforge.net> Signed-off-by: Jean Delvare <khali@linux-fr.org>
2007-05-01i2c-nforce2: Add support for the MCP61 and MCP65Jean Delvare
Signed-off-by: Jean Delvare <khali@linux-fr.org> Cc: Hans-Frieder Vogt <hfvogt@gmx.net>
2007-02-13i2c-parport: Add support for One For All remote JP1 interfaceJonathan McDowell
This simple patch adds support to i2c-parport for the One For All remote JP1 parallel port interfaces which can be found detailed at: http://www.hifi-remote.com/jp1/hardware.shtml These allow access to the internal configuration EEPROM on various remote controls and there are a variety of Windows tools that make use of this hardware. I have tested this patch with the "simple" parallel port device and a One For All URC-7562 and confirmed that the data read using the eeprom i2c driver matches that returned by the Windows "IR" JP1 tool. Signed-off-by: Jonathan McDowell <noodles@earth.li> Signed-off-by: Jean Delvare <khali@linux-fr.org>
2007-02-13i2c-viapro: Add support for the VIA CX700 south bridgeJean Delvare
We do not have any documentation for the CX700, but it was reported to work fine. Thanks to Claas Langbehn for testing. Signed-off-by: Jean Delvare <khali@linux-fr.org>
2007-02-13i2c: Add driver suspend/resume/shutdown supportDavid Brownell
Driver model updates for the I2C core: - Add new suspend(), resume(), and shutdown() methods. Use them in the standard driver model style; document them. - Minor doc updates to highlight zero-initialized fields in drivers, and the driver model accessors for "clientdata". If any i2c drivers were previously using the old suspend/resume calls in "struct driver", they were getting warning messages ... and will now no longer work. Other than that, this patch changes no behaviors; and it lets I2C drivers use conventional PM and shutdown support. Signed-off-by: David Brownell <dbrownell@users.sourceforge.net> Signed-off-by: Jean Delvare <khali@linux-fr.org>
2007-02-13i2c-i801: Document the SMBus unhiding quirkJean Delvare
This is a frequently asked question so it deserves a paragraph in the driver documentation. Signed-off-by: Jean Delvare <khali@linux-fr.org>
2007-02-13i2c: Fix typo in SMBus Write Word Data descriptionMike Frysinger
Write data, don't read it. Signed-off-by: Mike Frysinger <vapier@gentoo.org> Signed-off-by: Jean Delvare <khali@linux-fr.org>
2007-02-13i2c-piix4: Add support for the ATI SB600Jean Delvare
Add support for the ATI SB600 SMBus controller. Signed-off-by: Jean Delvare <khali@linux-fr.org>
2006-12-10i2c: i2c-i801 documentation updateJason Gaston
Add the Intel ICH9/ICH8/ESB2 SMBus Controller text to i2c-i801 documentation. Signed-off-by: Jason Gaston <jason.d.gaston@intel.com> Signed-off-by: Jean Delvare <khali@linux-fr.org>
2006-12-10i2c: Cleanups to the i2c-nforce2 bus driverHans-Frieder Vogt
Summary of changes: - fixes: o legacy I/O region size is 64 bytes, not 8 bytes - general cleanup: o removed code for the unsupported I2C block data, block data, proc call and block proc call transfer modes o removed detail warnings about unsupported modes that are covered in a general warning (unsupported transaction...) anyway o removed necessity of a definition of struct i2c_adapter o moved definition of struct i2c_algorithm, making forward declarations of nforce2_access and nforce2_func unnecessary - minor changes: o in the description mention the nForce 5xx chipsets o changes my e-mail address in MODULE_AUTHOR Theses cleanups shrink the driver binary size from 4.0 kB to 2.7 kB on i386. Signed-off-by: Hans-Frieder Vogt <hfvogt@gmx.net> Signed-off-by: Jean Delvare <khali@linux-fr.org>
2006-12-10i2c: Fix documentation typosJean Delvare
Fix typos in i2c bus drivers documentation. Signed-off-by: Jean Delvare <khali@linux-fr.org>
2006-09-26i2c-viapro: Add support for the VT8237A and VT8251Rudolf Marek
i2c-viapro: Add support for the VT8237A and VT8251 Documentation update included. Compile tested. Signed-off-by: Rudolf Marek <r.marek@sh.cvut.cz> Signed-off-by: Jean Delvare <khali@linux-fr.org> Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
2006-09-26i2c-stub: Chip address as a module parameterJean Delvare
i2c-stub: Chip address as a module parameter Add a mandatory chip_addr parameter to i2c-stub. This parameter defines to which chip address the driver will respond, instead of reponding to all addresses as before. The idea is to prevent the users from loading i2c-stub at random and being then confused by the results of sensors-detect or other user-space tools. Signed-off-by: Jean Delvare <khali@linux-fr.org> Signed-off-by: Mark M. Hoffman <mhoffman@lightlink.com> Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
2006-07-12[PATCH] i2c: New mailing listJean Delvare
We have a new mailing list dedicated to linux i2c: http://lists.lm-sensors.org/mailman/listinfo/i2c Signed-off-by: Jean Delvare <khali@linux-fr.org> Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
2006-06-22[PATCH] i2c-i801: Remove force_addr parameterJean Delvare
i2c-i801: Remove force_addr parameter Remove the force_addr module parameter. It doesn't appear to ever have been needed, and PCI resources shouldn't be arbitrarily changed anyway. Signed-off-by: Jean Delvare <khali@linux-fr.org> Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
2006-06-22[PATCH] scx200_acb: Documentation updateJean Delvare
Documentation update for the scx200_acb driver. Hopefully this will help future users. References: [lm-sensors] Support of i2c-nscacb (April, May 2005) http://lists.lm-sensors.org/pipermail/lm-sensors/2005-April/011756.html http://lists.lm-sensors.org/pipermail/lm-sensors/2005-May/012043.html [lm-sensors] making a geode i2c slave driver (April 2006) http://lists.lm-sensors.org/pipermail/lm-sensors/2006-April/015998.html Kernel bug #6445 http://bugzilla.kernel.org/show_bug.cgi?id=6445 Signed-off-by: Jean Delvare <khali@linux-fr.org> Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
2006-06-22[PATCH] i2c: New bus driver for the OpenCores I2C controllerPeter Korsgaard
The following patch adds support for the OpenCores I2C controller IP core (See http://www.opencores.org/projects.cgi/web/i2c/overview). Signed-off-by: Peter Korsgaard <jacmet@sunsite.dk> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Jean Delvare <khali@linux-fr.org> Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
2006-06-22[PATCH] I2C: i2c-nforce2: Add support for the nForce4 MCP51 and MCP55Jean Delvare
Add support for the new nForce4 MCP51 (also known as nForce 410 or 430) and nForce4 MCP55 to the i2c-nforce2 driver. Some code changes were required because the base I/O address registers have changed in these versions. Standard BARs are now being used, while the original nForce2 chips used non-standard ones. Signed-off-by: Jean Delvare <khali@linux-fr.org> Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
2006-06-22[PATCH] I2C: i2c-piix4: Document the IBM problem more clearlyJean Delvare
Properly document on which systems the i2c-piix4 SMBus driver will refuse to load. Hopefully this will make it clearer for users, which were often wondering why their destop or server systems were detected as laptops. Closes bug #6429. Signed-off-by: Jean Delvare <khali@linux-fr.org> Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
2006-06-22[PATCH] I2C: i2c-piix4: Fix typo in documentationJean Delvare
Fix i2c-piix4 documentation typo. Signed-off-by: Jean Delvare <khali@linux-fr.org> Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
2006-06-22[PATCH] I2C: i2c-piix4: Remove the fix_hstcfg parameterRudolf Marek
This patch removes the fix_hstcfg option from the driver and related SMBus Interrupt Select register magic because now we know what are valid values for this register. This patch updates the documentation and adds new IRQ mode check so we are sure not to miss any new "unusual" value. The PCI quirk for users of fix_hstcfg was not developed because the chipset lacks of subsystem ID registers and DMI is stated "To be filled". Impact to existing systems is minimal because the problem showed up on motherboards like 10 years back. On the other hand users of newer Serverworks and HT1000 systems won't be misleaded by the message suggesting to try the fix_hstcfg any more. Signed-off-by: Rudolf Marek <r.marek@sh.cvut.cz> Signed-off-by: Jean Delvare <khali@linux-fr.org> Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
2006-06-22[PATCH] i2c-piix4: Add ATI IXP200/300/400 supportRudolf Marek
This patch adds the ATI IXP southbridges support to i2c-piix4, as it turned out those chips are compatible with it. Signed-off-by: Rudolf Marek <r.marek@sh.cvut.cz> Signed-off-by: Jean Delvare <khali@linux-fr.org> Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
2006-04-14[PATCH] i2c-parport: Make type parameter mandatoryMark M. Hoffman
This patch forces the user to specify what type of adapter is present when loading i2c-parport or i2c-parport-light. If none is specified, the driver init simply fails - instead of assuming adapter type 0. This alleviates the sometimes lengthy boot time delays which can be caused by accidentally building one of these into a kernel along with several i2c slave drivers that have lengthy probe routines (e.g. hwmon drivers). Kconfig and documentation updated accordingly. Signed-off-by: Mark M. Hoffman <mhoffman@lightlink.com> Signed-off-by: Jean Delvare <khali@linux-fr.org> Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
2006-03-23[PATCH] I2C: i2c-piix4: Add Broadcom HT-1000 supportMartin Devera
Add Broadcom HT-1000 south bridge's PCI ID to i2c-piix driver. Note that at least on Supermicro H8SSL it uses non-standard SMBHSTCFG = 3 and standard values like 0 or 9 causes hangup. Signed-off-by: Martin Devera <devik@cdi.cz> Signed-off-by: Jean Delvare <khali@linux-fr.org> Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
2006-03-23[PATCH] i2c: scx200_acb minimal documentation updateBen Gardner
scx200_acb: Minimal documentation update Signed-off-by: Ben Gardner <bgardner@wabtec.com> Signed-off-by: Jean Delvare <khali@linux-fr.org> Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
2006-02-06[PATCH] i2c: Rename i2c-sis96x documentation fileRudolf Marek
This patch just renames the documentation file to correct file name. i2c-sis69x -> i2c-sis96x. Signed-off-by: Rudolf Marek <r.marek@sh.cvut.cz> Signed-off-by: Jean Delvare <khali@linux-fr.org> Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
2006-01-05[PATCH] i2c: i2c-nforce2 add nforce4 MCP-04 device IDJean Delvare
One more supported PCI ID for the i2c-nforce2 driver. Signed-off-by: Jean Delvare <khali@linux-fr.org> Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
2006-01-05[PATCH] i2c: update i2c_driver.command documentationJean Delvare
Document i2c_driver.command as being deprecated, and don't suggest an empty implementation of this callback as it doesn't make any sense. Signed-off-by: Jean Delvare <khali@linux-fr.org> Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
2006-01-05[PATCH] i2c: Documentation updateJean Delvare
Update the i2c documentation to reflect the recent change to i2c_add_driver. Signed-off-by: Jean Delvare <khali@linux-fr.org> Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
2006-01-05[PATCH] i2c: Drop i2c_driver.{owner,name}, 11 of 11Jean Delvare
Document the drop of the owner and name fields of the i2c_driver structure. Signed-off-by: Jean Delvare <khali@linux-fr.org> CC: Laurent Riffard <laurent.riffard@free.fr> Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
2006-01-05[PATCH] i2c: Chip driver porting guide updateJean Delvare
Update Documentation/i2c/porting-clients. Many recent changes to the i2c and hwmon subsystems were never reported there. Signed-off-by: Jean Delvare <khali@linux-fr.org> Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
2006-01-05[PATCH] i2c: Rework client usage count, 3 of 3Jean Delvare
Do not limit the usage count of i2c clients to 1. In other words, change the client usage count behavior from the old I2C_CLIENT_ALLOW_USE to the old I2C_CLIENT_ALLOW_MULTIPLE_USE. The rationale is that no driver actually needs the limiting behavior, and the unlimiting behavior is slightly easier to implement. Update the documentation to reflect this change. Signed-off-by: Jean Delvare <khali@linux-fr.org> Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
2006-01-05[PATCH] i2c: Drop i2c_driver.flags, 2 of 3Jean Delvare
Just about every i2c chip driver sets the I2C_DF_NOTIFY flag, so we can simply make it the default and drop the flag. If any driver really doesn't want to be notified when i2c adapters are added, that driver can simply omit to set .attach_adapter. This approach is also more robust as it prevents accidental NULL pointer dereferences. Signed-off-by: Jean Delvare <khali@linux-fr.org> Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
2006-01-05[PATCH] i2c: Add support for Barco LPT->DVI to i2c-parportPeter Korsgaard
The following patch adds support for the Barco LPT->DVI I2C adapter to the i2c-parport driver. Signed-off-by: Peter Korsgaard <jacmet@sunsite.dk> Signed-off-by: Jean Delvare <khali@linux-fr.org> Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
2005-11-07[PATCH] i2c-viapro: Some adjustmentsJean Delvare
The big i2c-viapro SMBus driver update which went into 2.6.14-git1 introduced a few minor issues. Nothing critical, but I would like a few adjustments to be merged in to fix the following problems: * VIA should not be spelled Via. * Frodo Looijaard and Philip Edelbrock did not write the i2c-viapro driver. * When debugging is disabled, half of messages would be logged. * Drop an unneeded masking. * Some port reads can be avoided now that the transaction size is passed as a parameter to vt596_transaction(). * SMBus Receive Byte transactions are used for probing too (for EEPROMs), so hide errors on these too. Signed-off-by: Jean Delvare <khali@linux-fr.org> Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
2005-11-07[PATCH] i2c: writing-client doc update complementJean Delvare
My latest update to the writing-clients i2c documentation file was incomplete, here's the complement. Large parts of this file are still way out-of-date, but at least now the memory allocation and freeing instructions are consistent. Signed-off-by: Jean Delvare <khali@linux-fr.org> Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
2005-10-30[PATCH] remove some more check_region stuffJeff Garzik
Removed some more references to check_region(). I checked these changes into the 'checkreg' branch of rsync://rsync.kernel.org/pub/scm/linux/kernel/git/jgarzik/misc-2.6.git The only valid references remaining are in: drivers/scsi/advansys.c drivers/scsi/BusLogic.c drivers/cdrom/sbpcd.c sound/oss/pss.c Remove last vestiges of ide_check_region() drivers/char/specialix: trim trailing whitespace drivers/char/specialix: eliminate use of check_region() Remove outdated and unused references to check_region() [sound oss] remove check_region() usage from cs4232, wavfront [netdrvr eepro] trim trailing whitespace [netdrvr eepro] remove check_region() usage Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2005-10-28[PATCH] i2c: i2c-i810 documentation updateJean Delvare
Update the documented list of devices supported by the i2c-i810 driver. Signed-off-by: Jean Delvare <khali@linux-fr.org> Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
2005-10-28[PATCH] i2c: Documentation updateJean Delvare
Update the i2c documentation: kzalloc should be used instead of kmalloc. I also fixed a couple other things nearby in writing-clients, as several past changes had never been reported there. Signed-off-by: Jean Delvare <khali@linux-fr.org> Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
2005-10-28[PATCH] i2c: New Xicor X1205 RTC driverAlessandro Zummo
New driver for the Xicor X1205 RTC chip. Signed-off-by: Alessandro Zummo <alessandro.zummo@towertech.it> Signed-off-by: Jean Delvare <khali@linux-fr.org> Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
2005-10-28[PATCH] i2c: Documentation fixesJean Delvare
i2c documentation fixes. >From Hideki Iwamoto: * i2c_smbus_read_i2c_block_data is not deleted in 2.6.10. It still exists. * The name which can be set to i2c_driver is up to 31 characters. >From Jean Delvare: * Reword the paragraph about i2c_driver.name, to reflect the "new" naming policy. * Delete the out-of-date note about now gone inc_use and dec_use fields. Signed-off-by: Jean Delvare <khali@linux-fr.org> Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
2005-10-28[PATCH] i2c-viapro: Update supported devices listJean Delvare
Make it clearer which chips are supported by the i2c-viapro driver, and which support I2C block transactions. Signed-off-by: Jean Delvare <khali@linux-fr.org> Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de> Documentation/i2c/busses/i2c-viapro | 12 ++++++------ drivers/i2c/busses/i2c-viapro.c | 22 +++++++++++++--------- 2 files changed, 19 insertions(+), 15 deletions(-)
2005-10-28[PATCH] i2c-viapro: Implement I2C Block transactionsJean Delvare
Implement the I2C block transactions on VIA chips which support them: VT82C686B, VT8233, VT8233A, VT8235 and VT8237R. This speeds up EEPROM accesses by a factor 10 or so. I would like to thank Antonino A. Daplas, Hinko Kocevar, Salah Coronya and Andreas Henriksson for their help in testing this new feature. Signed-off-by: Jean Delvare <khali@linux-fr.org> Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de> Documentation/i2c/busses/i2c-viapro | 7 +++++- drivers/i2c/busses/i2c-viapro.c | 39 +++++++++++++++++++++++++++++++++--- 2 files changed, 42 insertions(+), 4 deletions(-)
2005-10-28[PATCH] i2c-viapro: Coding style fixesJean Delvare
Before I go on cleaning up and improving the i2c-viapro driver, let's fix all the coding style issues: mostly trailing white space, and spaces used where tabs should be. Signed-off-by: Jean Delvare <khali@linux-fr> Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de> Documentation/i2c/busses/i2c-viapro | 12 ++--- drivers/i2c/busses/i2c-viapro.c | 76 ++++++++++++++++++------------------ 2 files changed, 43 insertions(+), 45 deletions(-)
2005-10-28[PATCH] i2c: Fix I2C_FUNC_PROTOCOL_MANGLING documentationHideki Iwamoto
Fix the description of I2C_FUNC_PROTOCOL_MANGLING. From: Hideki Iwamoto <h-iwamoto@kit.hi-ho.ne.jp> Signed-off-by: Jean Delvare <khali@linux-fr.org> Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de> Documentation/i2c/functionality | 7 ++++--- 1 file changed, 4 insertions(+), 3 deletions(-)
2005-09-05[PATCH] I2C: Centralize 24RF08 corruption preventionJean Delvare
The 24RF08 corruption would better be prevented at i2c-core level than at chip driver level, for several reasons: * The second quick write should happen as soon as possible after the first one, so as to limit the risk that another command is issued on the bus inbetween, causing the corruption. * As a matter of fact, the protection code at driver level was reworked at least three times already, which proves how hard it is to get it right there, while it's straightforward at i2c-core level. * It's easy to add a new driver that would need the protection, and forget to add it. This did happen already. * As additional probing addresses can be passed to most i2c chip drivers as module parameters, virtually every i2c chip driver would need the protection if we want to be really safe. * Why duplicate code when we can easily avoid it? Signed-off-by: Jean Delvare <khali@linux-fr.org> Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
2005-09-05[PATCH] I2C: Rewrite i2c_probeJean Delvare
i2c_probe was quite complex and slow, so I rewrote it in a more efficient and hopefully clearer way. Note that this slightly changes the way the module parameters are handled. This shouldn't change anything for the most common cases though. For one thing, the function now respects the order of the parameters for address probing. It used to always do lower addresses first. The new approach gives the user more control. For another, ignore addresses don't overrule probe addresses anymore. This could have been restored the way it was at the cost of a few more lines of code, but I don't think it's worth it. Both lists are given as module parameters, so a user would be quite silly to specify the same addresses in both lists. The normal addresses list is the only one that isn't controlled by a module parameter, thus is the only one the user may reasonably want to remove an address from. Another significant change is the fact that i2c_probe() will no more stop when a detection function returns -ENODEV. Just because a driver found a chip it doesn't support isn't a valid reason to stop all probings for this one driver. This closes the long standing lm_sensors ticket #1807. http://www2.lm-sensors.nu/~lm78/readticket.cgi?ticket=1807 I updated the documentation accordingly. In terms of algorithmic complexity, the new code is way better. If I is the ignore address count, P the probe address count, N the normal address count and F the force address count, the old code was doing 128 * (F + I + P + N) iterations max, while the new code does F + P + ((I+1) * N) iterations max. For the most common case where F, I and P are empty, this is down from 128 * N to N. Signed-off-by: Jean Delvare <khali@linux-fr.org> Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
generated by cgit v1.2.3 (git 2.25.1) at 2024-11-23 14:33:32 +0000