15 Dec, 2009
1 commit
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Struct i2c_client_address_data only contains one field at this point,
which makes its usefulness questionable. Get rid of it and pass simple
address lists around instead.Signed-off-by: Jean Delvare
Tested-by: Wolfram Sang
07 Dec, 2009
5 commits
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There is nothing sensors-specific to i2c-stub.
Signed-off-by: Jean Delvare
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Add a module parameter to override the functionality bitfield. This
lets the user disable some commands. This can be used to force a chip
driver to take different code paths.Signed-off-by: Jean Delvare
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This is required to test some drivers, for example at24.
Signed-off-by: Jean Delvare
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The legacy probe and force module parameters are obsolete now, the
same can be achieved using the new_device sysfs interface, which is
both more flexible and cheaper (it is implemented by i2c-core rather
than replicated in every driver module.)The legacy ignore module parameters can be dropped as well. Ignoring
can be done by instantiating a "dummy" device at the problematic
address.This is the first step of a huge cleanup to i2c-core's i2c_detect
function, i2c.h's I2C_CLIENT_INSMOD* macros, and all drivers that made
use of them.Signed-off-by: Jean Delvare
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Superseded by tdfxfb. I2C/DDC support used to live in a separate
driver but this caused driver conflicts.Signed-off-by: Jean Delvare
Cc: Krzysztof Helt
07 Nov, 2009
1 commit
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Change SB900 to its formal code name Hudson-2.
Signed-off-by: Crane Cai
Signed-off-by: Jean Delvare
05 Oct, 2009
2 commits
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The sysfs path to i2c adapters has changed recently, update the
documentation to reflect that change.Signed-off-by: Jean Delvare
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Some times ago the eeprom and max6875 drivers moved to
drivers/misc/eeprom, but their documentation did not follow. It's
finally time to get rid of Documentation/i2c/chips.Signed-off-by: Jean Delvare
Cc: Ben Gardner
Acked-by: Wolfram Sang
19 Sep, 2009
4 commits
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Add new SMBus device ID for AMD SB900.
Signed-off-by: Crane Cai
Signed-off-by: Jean Delvare -
The pcf8574 driver in drivers/i2c/chips which just exports its register to
sysfs is superseded by drivers/gpio/pcf857x.c which properly uses the gpiolib.
As this driver has been deprecated for more than a year, finally remove it.Signed-off-by: Wolfram Sang
Cc: Aurelien Jarno
Signed-off-by: Jean Delvare -
The pca9539 driver in drivers/i2c/chips which just exports its registers to
sysfs is superseded by drivers/gpio/pca953x.c which properly uses the gpiolib.
As this driver has been deprecated for more than a year, finally remove it.Signed-off-by: Wolfram Sang
Acked-by: Ben Gardner
Signed-off-by: Jean Delvare -
The pcf8575 driver in drivers/i2c/chips which just exports its register to
sysfs is superseded by drivers/gpio/pcf857x.c which properly uses the gpiolib.
As this driver has been deprecated for more than a year, finally remove it.Signed-off-by: Wolfram Sang
Cc: Bart Van Assche
Signed-off-by: Jean Delvare
19 Jun, 2009
2 commits
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Add a sysfs interface to instantiate and delete I2C devices. This is
primarily a replacement of the force_* module parameters implemented
by some i2c drivers. These module parameters were implemented
internally by the I2C_CLIENT_INSMOD* macros, which don't scale well.This can also be used when developing a driver on a self-soldered
board which doesn't yet have proper I2C device declaration at the
platform level, and presumably for various debugging situations.Signed-off-by: Jean Delvare
Cc: David Brownell -
We converted all the legacy i2c drivers so we can finally get rid of
the legacy binding model. Hooray!Signed-off-by: Jean Delvare
Cc: David Brownell
16 Jun, 2009
1 commit
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The south bridge of the VIA VX855 chipset has a different PCI Device ID
so i2c-viapro.c needs to be updated with this.Signed-off-by: Harald Welte
Signed-off-by: Jean Delvare
13 Jun, 2009
1 commit
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There is sometimes a need for the ocores driver to add devices to the
bus when installed.i2c_register_board_info can not always be used, because the I2C devices
are not known at an early state, they could for instance be connected
on a I2C bus on a PCI device which has the Open Cores IP.i2c_new_device can not be used in all cases either since the resulting
bus nummer might be unknown.The solution is the pass a list of I2C devices in the platform data to
the Open Cores driver. This is useful for MFD drivers.Signed-off-by: Richard Röjfors
Signed-off-by: Ben Dooks
31 Mar, 2009
1 commit
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Directory drivers/i2c/chips is going away, so drivers there must find
new homes. For the pcf8591 driver, the best choice seems to be the
hwmon subsystem. While the Philips PCF8591 device isn't a typical
hardware monitoring chip, its DAC interface is compatible with the
hwmon one, so it fits somewhat.If a better subsystem is ever created for ADC/DAC chips, the driver
could be moved there.Signed-off-by: Jean Delvare
Cc: Aurelien Jarno
29 Mar, 2009
3 commits
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Add support for the Broadcom HT1100 LD chipset (SMBus function.)
Signed-off-by: Flavio Leitner
Signed-off-by: Jean Delvare -
The MCP78S and MCP79 appear to be compatible with the previous nForce
chips as far as the SMBus controller is concerned. The MCP67 and MCP73
were not tested yet but I'd be very surprised if they weren't
compatible too.Signed-off-by: Jean Delvare
Cc: Oleg Ryjkov
Cc: Malcolm Lalkaka
Cc: Zbigniew Luszpinski -
On popular demand, here comes some documentation about how to
instantiate i2c devices in the new (standard) i2c device driver
binding model.I have also clarified how the class bitfield lets driver authors
control which buses are probed in the auto-detect case, and warned
more loudly against the abuse of this method.Signed-off-by: Jean Delvare
Acked-by: Michael Lawnick
Acked-by: Hans Verkuil
30 Oct, 2008
1 commit
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Replace all references to the old i2c mailing list.
Signed-off-by: Jean Delvare
23 Oct, 2008
5 commits
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* Strip trailing white space.
* Remove out-of-date or irrelevant parts.
* Insist on the fact that command is deprecated.
* Fix spelling mistakes and typos.
* Reformat code examples and function prototypes to comply with the
kernel coding style.Signed-off-by: Jean Delvare
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The legacy i2c binding model is deprecated and will be removed soon,
so we no longer need to document it.Signed-off-by: Jean Delvare
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i2c_get_clientdata doesn't change the i2c_client it is passed as a
parameter, so it can be constified. Same for i2c_get_adapdata.Signed-off-by: Jean Delvare
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The document describing how to port i2c chip drivers from Linux 2.4 to
Linux 2.6 is outdated. As I suspect that most drivers that had to be
ported have already been by now, I do not want to spend time updating
it. Let's just delete it instead.Signed-off-by: Jean Delvare
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Adds the Intel Ibex Peak (PCH) SMBus Controller Device IDs.
Signed-off-by: Seth Heasley
Signed-off-by: Jean Delvare
14 Oct, 2008
4 commits
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Restore the i2c_smbus_process_call() as one driver (for the
Micronas MAP5401) will need it soon.[JD: Update documentation accordingly.]
Signed-off-by: Prakash Mortha
Signed-off-by: Jean Delvare -
I wrote this explanation to answer a question on the i2c mailing list,
and thought it would be good to have in the kernel documentation.Signed-off-by: Jean Delvare
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* Clarify some points.
* Point developers to i2c-tools instead of lm_sensors.
* Fix coding style in code examples.Signed-off-by: Jean Delvare
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Thanks to new datasheets published on http://linux.via.com.tw we can now add
support for VX800/VX820 chipsets.Signed-off-by: Rudolf Marek
Signed-off-by: Jean Delvare
28 Jul, 2008
1 commit
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Add a document describing how i2c clients on Linux 2.6 can be
moved from the old to the new driver model.Signed-off-by: Ben Dooks
17 Jul, 2008
4 commits
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The new-style max6875 driver implements the optional detect() callback
to cover the use cases of the legacy driver. I'm curious if anyone
really needs this though, so it might be removed in the feature.Signed-off-by: Jean Delvare
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The new-style pca9539 driver implements the optional detect() callback
to cover the use cases of the legacy driver.Warning: users will now have to use the force module parameter to get
the driver to attach to their device. That's not a bad thing as these
devices can't be detected anyway.Note that this doesn't change the fact that this driver is deprecated
in favor of gpio/pca953x.Signed-off-by: Jean Delvare
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The new-style pcf8575 driver implements the optional detect() callback
to cover the use cases of the legacy driver.Warning: users will now have to use the force module parameter to get
the driver to attach to their device. That's not a bad thing as these
devices can't be detected anyway.Note that this doesn't change the fact that this driver is deprecated
in favor of gpio/pcf857x.Signed-off-by: Jean Delvare
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The new-style pcf8574 driver implements the optional detect() callback
to cover the use cases of the legacy driver.Warning: users will now have to use the force module parameter to get
the driver to attach to their device. That's not a bad thing as these
devices can't be detected anyway.Note that this doesn't change the fact that this driver is deprecated
in favor of gpio/pcf857x.Signed-off-by: Jean Delvare
15 Jul, 2008
4 commits
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Add a mechanism to let new-style i2c drivers optionally autodetect
devices they would support on selected buses and ask i2c-core to
instantiate them. This is a replacement for legacy i2c drivers, much
cleaner.Where drivers had to implement both a legacy i2c_driver and a
new-style i2c_driver so far, this mechanism makes it possible to get
rid of the legacy i2c_driver and implement both enumerated and
detected device support with just one (new-style) i2c_driver.Here is a quick conversion guide for these drivers, step by step:
* Delete the legacy driver definition, registration and removal.
Delete the attach_adapter and detach_client methods of the legacy
driver.* Change the prototype of the legacy detect function from
static int foo_detect(struct i2c_adapter *adapter, int address, int kind);
to
static int foo_detect(struct i2c_client *client, int kind,
struct i2c_board_info *info);* Set the new-style driver detect callback to this new function, and
set its address_data to &addr_data (addr_data is generally provided
by I2C_CLIENT_INSMOD.)* Add the appropriate class to the new-style driver. This is
typically the class the legacy attach_adapter method was checking
for. Class checking is now mandatory (done by i2c-core.) See
for the list of available classes.* Remove the i2c_client allocation and freeing from the detect
function. A pre-allocated client is now handed to you by i2c-core,
and is freed automatically.* Make the detect function fill the type field of the i2c_board_info
structure it was passed as a parameter, and return 0, on success. If
the detection fails, return -ENODEV.Signed-off-by: Jean Delvare
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Function i2c_smbus_write_quick has no users left, so we can delete it.
Also update the list of these helper functions which are gone but
could be added back if needed.Signed-off-by: Jean Delvare
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More updates to the I2C stack's fault reporting: make the core stop
returning "-1" (usually "-EPERM") for all faults. Instead, pass lower
level fault code up the stack, or return some appropriate errno.This patch happens to touch almost exclusively SMBus calls.
Signed-off-by: David Brownell
Signed-off-by: Jean Delvare -
Create Documentation/i2c/fault-codes to help standardize
fault/error code usage in the I2C stack. It turns out that
returning -1 (-EPERM) for everything was not at all helpful.Signed-off-by: David Brownell
Signed-off-by: Jean Delvare
