aboutsummaryrefslogtreecommitdiffstats
path: root/include/linux/i2c.h
Commit message (Collapse)AuthorAge
* i2c: Drop unimplemented slave functionsJean Delvare2006-09-26
| | | | | | | | | | | | i2c: Drop unimplemented slave functions Drop the function declarations for slave mode support of i2c adapters. This was never implemented, and by the time it is I bet we will want something different anyway. Signed-off-by: Jean Delvare <khali@linux-fr.org> Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
* i2c: Let drivers constify i2c_algorithm dataDavid Brownell2006-09-26
| | | | | | | | | | | | i2c: Let drivers constify i2c_algorithm data Let drivers constify I2C algorithm method operations tables, moving them from ".data" to ".rodata". Signed-off-by: David Brownell <dbrownell@users.sourceforge.net> Signed-off-by: Jean Delvare <khali@linux-fr.org> Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
* [PATCH] i2c-powermac: Fix master_xfer return valueJean Delvare2006-07-12
| | | | | | | | | | | | | | Fix the value returned by the i2c-powermac's master_xfer method. It should return the number of messages processed successfully, but instead returns the number of data bytes in the first (and only) processed message. Also explicitly mention the master_xfer convention so that future implementations get it right directly. Signed-off-by: Jean Delvare <khali@linux-fr.org> Acked-by: Benjamin Herrenschmidt <benh@kernel.crashing.org> Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
* [PATCH] i2c: Mark block write buffers as constKrzysztof Halasa2006-06-22
| | | | | | | | | The attached patch marks i2c_smbus_write_block_data() and i2c_smbus_write_i2c_block_data() buffers as const. Signed-off-by: Krzysztof Halasa <khc@pm.waw.pl> Signed-off-by: Jean Delvare <khali@linux-fr.org> Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
* Sanitise linux/i2c.h for userspace consumptionDavid Woodhouse2006-04-25
| | | | | | | | It was unconditionally including a whole bunch of headers which aren't user-visible, and also exposing a lot of private internal stuff of its own. Also fix some legacy character set to UTF-8 while we're at it. Signed-off-by: David Woodhouse <dwmw2@infradead.org>
* [PATCH] i2c: Semaphore to mutex conversions, part 2Ingo Molnar2006-03-23
| | | | | | | | | | | | | semaphore to mutex conversion. the conversion was generated via scripts, and the result was validated automatically via a script as well. build tested. Signed-off-by: Ingo Molnar <mingo@elte.hu> Signed-off-by: Jean Delvare <khali@linux-fr.org> Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
* [PATCH] I2C: Resurrect i2c_smbus_write_i2c_block_data.Jean Delvare2006-02-06
| | | | Signed-off-by: Jean Delvare <khali@linux-fr.org>
* [PATCH] I2C: Make i2c_add_driver automatically set the proper module ownerGreg Kroah-Hartman2006-01-06
| | | | | | | | | This prevents i2c drivers from messing up and forgetting to set the module owner of their driver. It also reduces the size of their drivers by one line :) Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de> Cc: Jean Delvare <khali@linux-fr.org>
* [PATCH] i2c: Drop i2c_driver.{owner,name}, 1 of 11Laurent Riffard2006-01-06
| | | | | | | | | | | | | We should use the i2c_driver.driver's .name and .owner fields instead of the i2c_driver's ones. This patch updates the core of the i2c drivers: it removes .name and .owner fields from the struct i2c_device and modify various functions to use struct device fields instead. Signed-off-by: Laurent Riffard <laurent.riffard@free.fr> Signed-off-by: Jean Delvare <khali@linux-fr.org> Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
* [PATCH] i2c: i2c_get_client is goneJean Delvare2006-01-06
| | | | | | | | The i2c_get_client function doesn't exist anymore, so we shouldn't have a definition for it in i2c.h. Signed-off-by: Jean Delvare <khali@linux-fr.org> Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
* [PATCH] i2c: Rework client usage count, 3 of 3Jean Delvare2006-01-06
| | | | | | | | | | | | | 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>
* [PATCH] i2c: Rework client usage count, 2 of 3Jean Delvare2006-01-06
| | | | | | | | | Make I2C_CLIENT_ALLOW_USE the default for all i2c clients. It doesn't hurt if the usage count is actually never used for any given driver, and allows for nice code simplifications in i2c-core. Signed-off-by: Jean Delvare <khali@linux-fr.org> Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
* [PATCH] i2c: Rework client usage count, 1 of 3Jean Delvare2006-01-06
| | | | | | | No i2c client uses the I2C_CLIENT_ALLOW_MULTIPLE_USE flag, drop it. Signed-off-by: Jean Delvare <khali@linux-fr.org> Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
* [PATCH] i2c: Drop i2c_driver.flags, 3 of 3Jean Delvare2006-01-06
| | | | | | | The flags member of the i2c_driver structure is no more used. Drop it. Signed-off-by: Jean Delvare <khali@linux-fr.org> Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
* [PATCH] i2c: Drop i2c_driver.flags, 2 of 3Jean Delvare2006-01-06
| | | | | | | | | | | 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>
* [PATCH] i2c: Drop i2c_driver.flags, 1 of 3Jean Delvare2006-01-06
| | | | | | | | The I2C_DF_DUMMY flag is gone since 2.5.70, it's about time to drop all ifdef'd out references thereto. Signed-off-by: Jean Delvare <khali@linux-fr.org> Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
* [PATCH] fix missing includesTim Schmielau2005-10-30
| | | | | | | | | | | | | | | | | | | | | I recently picked up my older work to remove unnecessary #includes of sched.h, starting from a patch by Dave Jones to not include sched.h from module.h. This reduces the number of indirect includes of sched.h by ~300. Another ~400 pointless direct includes can be removed after this disentangling (patch to follow later). However, quite a few indirect includes need to be fixed up for this. In order to feed the patches through -mm with as little disturbance as possible, I've split out the fixes I accumulated up to now (complete for i386 and x86_64, more archs to follow later) and post them before the real patch. This way this large part of the patch is kept simple with only adding #includes, and all hunks are independent of each other. So if any hunk rejects or gets in the way of other patches, just drop it. My scripts will pick it up again in the next round. Signed-off-by: Tim Schmielau <tim@physik3.uni-rostock.de> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
* [PATCH] I2C: add i2c module alias for i2c drivers to useGreg Kroah-Hartman2005-10-28
| | | | | | This is the start of adding hotplug-like support for i2c devices. Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
* [PATCH] i2c: SMBus PEC support rewrite, 3 of 3Jean Delvare2005-10-28
| | | | | | | | The new SMBus PEC implementation doesn't support PEC emulation on non-PEC non-I2C SMBus masters, so we can drop all related code. Signed-off-by: Jean Delvare <khali@linux-fr.org> Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
* [PATCH] i2c: SMBus PEC support rewrite, 2 of 3Jean Delvare2005-10-28
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | This is my rewrite of the SMBus PEC support. The original implementation was known to have bugs (credits go to Hideki Iwamoto for reporting many of them recently), and was incomplete due to a conceptual limitation. The rewrite affects only software PEC. Hardware PEC needs very little code and is mostly untouched. Technically, both implementations differ in that the original one was emulating PEC in software by modifying the contents of an i2c_smbus_data union (changing the transaction to a different type), while the new one works one level lower, on i2c_msg structures (working on message contents). Due to the definition of the i2c_smbus_data union, not all SMBus transactions could be handled (at least not without changing the definition of this union, which would break user-space compatibility), and those which could had to be implemented individually. At the opposite, adding PEC to an i2c_msg structure can be done on any SMBus transaction with common code. Advantages of the new implementation: * It's about twice as small (from ~136 lines before to ~70 now, only counting i2c-core, including blank and comment lines). The memory used by i2c-core is down by ~640 bytes (~3.5%). * Easier to validate, less tricky code. The code being common to all transactions by design, the risk that a bug can stay uncovered is lower. * All SMBus transactions have PEC support in I2C emulation mode (providing the non-PEC transaction is also implemented). Transactions which have no emulation code right now will get PEC support for free when they finally get implemented. * Allows for code simplifications in header files and bus drivers (patch follows). Drawbacks (I guess there had to be at least one): * PEC emulation for non-PEC capable non-I2C SMBus masters was dropped. It was based on SMBus tricks and doesn't quite fit in the new design. I don't think it's really a problem, as the benefit was certainly not worth the additional complexity, but it's only fair that I at least mention it. Lastly, let's note that the new implementation does slightly affect compatibility (both in kernel and user-space), but doesn't actually break it. Some defines will be dropped, but the code can always be changed in a way that will work with both the old and the new implementations. It shouldn't be a problem as there doesn't seem to be many users of SMBus PEC to date anyway. Signed-off-by: Jean Delvare <khali@linux-fr.org> Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
* [PATCH] i2c: SMBus PEC support rewrite, 1 of 3Jean Delvare2005-10-28
| | | | | | | | | Discard I2C_FUNC_SMBUS_*_PEC defines. i2c clients are not supposed to check for PEC support of i2c bus drivers on individual SMBus transactions, and i2c bus drivers are not supposed to advertise them. Signed-off-by: Jean Delvare <khali@linux-fr.org> Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
* [PATCH] i2c: Drop I2C_SMBUS_I2C_BLOCK_MAXJean Delvare2005-10-28
| | | | | | | | | | | | | | | Drop I2C_SMBUS_I2C_BLOCK_MAX, use I2C_SMBUS_BLOCK_MAX instead. I2C_SMBUS_I2C_BLOCK_MAX has always been defined to the same value as I2C_SMBUS_BLOCK_MAX, and this will never change: setting it to a lower value would make no sense, setting it to a higher value would break i2c_smbus_data compatibility. There is no point in changing i2c_smbus_data to support larger block transactions in SMBus mode, as no SMBus hardware supports more than 32 byte blocks. Thus, for larger transactions, direct I2C transfers are the way to go. Signed-off-by: Jean Delvare <khali@linux-fr.org> Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
* [PATCH] i2c: Drop out-of-date, colliding ioctl definitionsJean Delvare2005-10-28
| | | | | | | | | | | Delete 2 out-of-date, colliding ioctl defines. I2C_UDELAY and I2C_MDELAY are supposed to be used by i2c-algo-bit, but actually aren't (and I suspect never were). Moreover, their values are the same as I2C_FUNCS and I2C_SLAVE_FORCE, respectively, which *are* widely used. Signed-off-by: Jean Delvare <khali@linux-fr.org> Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
* [PATCH] i2c: Fix misplaced i2c.h commentJean Delvare2005-10-28
| | | | | | | Fix a misplaced comment in i2c.h. Spotted by Hideki Iwamoto. Signed-off-by: Jean Delvare <khali@linux-fr.org> Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
* [PATCH] i2c: Drop useless CVS revision IDsJean Delvare2005-10-28
| | | | | | | CVS revision IDs are totally useless and irrelevant by now. Signed-off-by: Jean Delvare <khali@linux-fr.org> Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
* [PATCH] i2c: Fix union i2c_smbus_data definitionHideki Iwamoto2005-10-28
| | | | | | | | | | | | | | The i2c_smbus_data union block member has a comment stating that an extra byte is required for SMBus Block Process Call transactions. This has been true for three weeks around June 2002, but no more since, so it is about time that we drop this comment and fix the definition. 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> include/linux/i2c.h | 3 +-- 1 file changed, 1 insertion(+), 2 deletions(-)
* [PATCH] i2c: kill an unused i2c_adapter struct memberJean Delvare2005-09-17
| | | | | | | | | | | | | | | | Kill an unused member of the i2c_adapter structure. This additionally fixes a potential bug, because <linux/i2c.h> doesn't include <linux/config.h>, so different files including <linux/i2c.h> could see a different definition of the i2c_adapter structure, depending on them including <linux/config.h> (or other header files themselves including <linux/config.h>) before <linux/i2c.h>, or not. Credits go to Jörn Engel for pointing me to the problem. Signed-off-by: Jean Delvare <khali@linux-fr.org> Cc: Greg KH <greg@kroah.com> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
* [PATCH] I2C: Drop the I2C_ACK_TEST ioctlJean Delvare2005-09-05
| | | | | | | | | Drop the I2C_ACK_TEST ioctl, which was commented out. It never really existed (not after 1999 anyway), and there is no such thing as a ack test on I2C/SMBus anyway. Signed-off-by: Jean Delvare <khali@linux-fr.org> Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
* [PATCH] I2C: Drop I2C_DEVNAME and i2c_clientnameJean Delvare2005-09-05
| | | | | | | | | | | | | | | | | I2C_DEVNAME and i2c_clientname were introduced in 2.5.68 [1] to help media/video driver authors who wanted their code to be compatible with both Linux 2.4 and 2.6. The cause of the incompatibility has gone since [2], so I think we can get rid of them, as they tend to make the code harder to read and longer to preprocess/compile for no more benefit. I'd hope nobody seriously attempts to keep media/video driver compatible across Linux trees anymore, BTW. [1] http://marc.theaimsgroup.com/?l=linux-kernel&m=104930186524598&w=2 [2] http://www.linuxhq.com/kernel/v2.6/0-test3/include/linux/i2c.h Signed-off-by: Jean Delvare <khali@linux-fr.org> Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
* [PATCH] I2C: Outdated i2c_adapter commentJean Delvare2005-09-05
| | | | | | | | Delete an outdated comment about i2c_algorithm.id being computed from algo->id. Signed-off-by: Jean Delvare <khali@linux-fr.org> Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
* [PATCH] I2C: Kill i2c_algorithm.id (4/7)Jean Delvare2005-09-05
| | | | | | | | There are no more users of i2c_algorithm.id, so we can finally drop this structure member. Signed-off-by: Jean Delvare <khali@linux-fr.org> Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
* [PATCH] I2C: Kill i2c_algorithm.name (1/7)Jean Delvare2005-09-05
| | | | | | | | | The name member of the i2c_algorithm is never used, although all drivers conscientiously fill it. We can drop it completely, this structure doesn't need to have a name. Signed-off-by: Jean Delvare <khali@linux-fr.org> Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
* [PATCH] hwmon: hwmon vs i2c, second round (06/11)Jean Delvare2005-09-05
| | | | | | | | | | | The only thing left in i2c-sensor.h are module parameter definition macros. It's only an extension of what i2c.h offers, and this extension is not sensors-specific. As a matter of fact, a few non-sensors drivers use them. So we better merge them in i2c.h, and get rid of i2c-sensor.h altogether. Signed-off-by: Jean Delvare <khali@linux-fr> Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
* [PATCH] hwmon: hwmon vs i2c, second round (01/11)Jean Delvare2005-09-05
| | | | | | | | | | | | | | | Add support for kind-forced addresses to i2c_probe, like i2c_detect has for (essentially) hardware monitoring drivers. Note that this change will slightly increase the size of the drivers using I2C_CLIENT_INSMOD, with no immediate benefit. This is a requirement if we want to merge i2c_probe and i2c_detect though, and seems a reasonable price to pay in comparison with the previous cleanups which saved much more than that (such as the i2c-isa cleanup or the i2c address ranges removal.) Signed-off-by: Jean Delvare <khali@linux-fr.org> Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
* [PATCH] I2C: inline i2c_adapter_idJean Delvare2005-09-05
| | | | | | | | | | | | | | | | | | | | We could inline i2c_adapter_id, as it is really, really short. Doing so saves a few bytes both in i2c-core and in the drivers using this function. before after diff drivers/hwmon/adm1026.ko 41344 41305 -39 drivers/hwmon/asb100.ko 27325 27246 -79 drivers/hwmon/gl518sm.ko 20824 20785 -39 drivers/hwmon/it87.ko 26419 26380 -39 drivers/hwmon/lm78.ko 21424 21385 -39 drivers/hwmon/lm85.ko 41034 40939 -95 drivers/hwmon/w83781d.ko 39561 39514 -47 drivers/hwmon/w83792d.ko 32979 32932 -47 drivers/i2c/i2c-core.ko 24708 24531 -177 Signed-off-by: Jean Delvare <khali@linux-fr.org> Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
* [PATCH] I2C: Separate non-i2c hwmon drivers from i2c-core (9/9)Jean Delvare2005-09-05
| | | | | | | Move the definitions of i2c_is_isa_client and i2c_is_isa_adapter from i2c.h to i2c-isa.h. Only hybrid drivers still need them. Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
* [PATCH] I2C: Separate non-i2c hwmon drivers from i2c-core (7/9)Jean Delvare2005-09-05
| | | | | | | | | | | Kill normal_isa in header files, documentation and all chip drivers, as it is no more used. normal_i2c could be renamed to normal, but I decided not to do so at the moment, so as to limit the number of changes. This might be done later as part of the i2c_probe/i2c_detect merge. Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
* [PATCH] I2C: Separate non-i2c hwmon drivers from i2c-core (1/9)Jean Delvare2005-09-05
| | | | | | | | Temporarily export a few structures and functions from i2c-core, because we will soon need them in i2c-isa. Signed-off-by: Jean Delvare <khali@linux-fr.org> Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
* [PATCH] I2C: add kobj_to_i2c_clientbgardner@wabtec.com2005-09-05
| | | | | | | Move the inline function kobj_to_i2c_client() from max6875.c to i2c.h. Signed-off-by: Ben Gardner <bgardner@wabtec.com> Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
* [PATCH] I2C: Kill address ranges in non-sensors i2c chip driversJean Delvare2005-06-22
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Some months ago, you killed the address ranges mechanism from all sensors i2c chip drivers (both the module parameters and the in-code address lists). I think it was a very good move, as the ranges can easily be replaced by individual addresses, and this allowed for significant cleanups in the i2c core (let alone the impressive size shrink for all these drivers). Unfortunately you did not do the same for non-sensors i2c chip drivers. These need the address ranges even less, so we could get rid of the ranges here as well for another significant i2c core cleanup. Here comes a patch which does just that. Since the process is exactly the same as what you did for the other drivers set already, I did not split this one in parts. A documentation update is included. The change saves 308 bytes in the i2c core, and an average 1382 bytes for chip drivers which use I2C_CLIENT_INSMOD, 126 bytes for those which do not. This change is required if we want to merge the sensors and non-sensors i2c code (and we want to do this). Signed-off-by: Jean Delvare <khali@linux-fr.org> Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de> Index: gregkh-2.6/Documentation/i2c/writing-clients ===================================================================
* Linux-2.6.12-rc2v2.6.12-rc2Linus Torvalds2005-04-16
Initial git repository build. I'm not bothering with the full history, even though we have it. We can create a separate "historical" git archive of that later if we want to, and in the meantime it's about 3.2GB when imported into git - space that would just make the early git days unnecessarily complicated, when we don't have a lot of good infrastructure for it. Let it rip!
generated by cgit v1.2.2 (git 2.25.0) at 2024-11-24 16:15:07 -0500