Add support for the Broadcom HT1100 LD chipset (SMBus function.)
Signed-off-by: NFlavio Leitner <fbl@redhat.com>
Signed-off-by: NJean Delvare <khali@linux-fr.org>

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: NJean Delvare <khali@linux-fr.org>
Cc: Oleg Ryjkov <olegr@olegr.ca>
Cc: Malcolm Lalkaka <mlalkaka@gmail.com>
Cc: Zbigniew Luszpinski <zbiggy@o2.pl>

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: NJean Delvare <khali@linux-fr.org>
Acked-by: NMichael Lawnick <nospam_lawnick@gmx.de>
Acked-by: NHans Verkuil <hverkuil@xs4all.nl>

Replace all references to the old i2c mailing list.
Signed-off-by: NJean Delvare <khali@linux-fr.org>

* 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* Remove out-of-date or irrelevant parts.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: NJean Delvare <khali@linux-fr.org>

The legacy i2c binding model is deprecated and will be removed soon,
so we no longer need to document it.
Signed-off-by: NJean Delvare <khali@linux-fr.org>

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: NJean Delvare <khali@linux-fr.org>

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Linux 2.6 is outdated.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: NJean Delvare <khali@linux-fr.org>

Adds the Intel Ibex Peak (PCH) SMBus Controller Device IDs.
Signed-off-by: NSeth Heasley <seth.heasley@intel.com>
Signed-off-by: NJean Delvare <khali@linux-fr.org>

Restore the i2c_smbus_process_call() as one driver (for the
Micronas MAP5401) will need it soon.

[JD: Update documentation accordingly.]
Signed-off-by: NPrakash Mortha <pmortha@escient.com>
Signed-off-by: NJean Delvare <khali@linux-fr.org>

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: NJean Delvare <khali@linux-fr.org>

* Clarify some points.
* Point developers to i2c-tools instead of lm_sensors.
* Fix coding style in code examples.
Signed-off-by: NJean Delvare <khali@linux-fr.org>

Thanks to new datasheets published on http://linux.via.com.tw we can now add 
support for VX800/VX820 chipsets.
Signed-off-by: NRudolf Marek <r.marek@assembler.cz>
Signed-off-by: NJean Delvare <khali@linux-fr.org>

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: NBen Dooks <ben-linux@fluff.org>

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: NJean Delvare <khali@linux-fr.org>

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: NJean Delvare <khali@linux-fr.org>

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: NJean Delvare <khali@linux-fr.org>

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: NJean Delvare <khali@linux-fr.org>

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
  <linux/i2c.h> 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: NJean Delvare <khali@linux-fr.org>

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: NJean Delvare <khali@linux-fr.org>

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: NDavid Brownell <dbrownell@users.sourceforge.net>
Signed-off-by: NJean Delvare <khali@linux-fr.org>

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: NDavid Brownell <dbrownell@users.sourceforge.net>
Signed-off-by: NJean Delvare <khali@linux-fr.org>

This patch contains the scheduled removal of i2c-i810, i2c-prosavage
and i2c-savage4.
Signed-off-by: NAdrian Bunk <bunk@kernel.org>
Signed-off-by: NJean Delvare <khali@linux-fr.org>

The matching process described for new style clients in
Documentation/i2c/writing-clients is classed as out-of-date
as it requires the presence of an .id_table entry in the
driver's i2c_driver entry.
Signed-off-by: NBen Dooks <ben-linux@fluff.org>
Signed-off-by: NJean Delvare <khali@linux-fr.org>

Attempt to make the documentation about the I2C/SMBus functionality
checking API clearer.
Signed-off-by: NJean Delvare <khali@linux-fr.org>

Improve the smbus-protocol documentation file somewhat:

 - Use the names of the SMBus protocol operations (from the 2.0
   specification), not made-up-for-Linux names.

 - Add the name of the call used to execute each operation ... and
   point out that there are mismatches, where functions execute
   different protocol operations than their names specify.
   
The most confusing examples are that "Read Byte" isn't executed by
i2c_smbus_read_byte(), and that "Write Byte" isn't executed by
i2c_smbus_write_byte().  When coding, that's not as bad as it may
seem; but that case would seem to be worth fixing.
Signed-off-by: NDavid Brownell <dbrownell@users.sourceforge.net>
Signed-off-by: NJean Delvare <khali@linux-fr.org>

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: NJean Delvare <khali@linux-fr.org>
Cc: Jochen Friedrich <jochen@scram.de>
Cc: Jon Smirl <jonsmirl@gmail.com>
Cc: Kay Sievers <kay.sievers@vrfy.org>

Add the Intel ICH10 SMBus Controller DeviceID's and updates
Tolapai support.
Signed-off-by: NJason Gaston <jason.d.gaston@intel.com>
Signed-off-by: NJean Delvare <khali@linux-fr.org>

It's about time to reflect the move of the lm-sensors project to
lm-sensors.org.
Signed-off-by: NJean Delvare <khali@linux-fr.org>
Signed-off-by: NMark M. Hoffman <mhoffman@lightlink.com>

Use drivers/gpio/pca9539.c instead.
Signed-off-by: Neric miao <eric.miao@marvell.com>
Acked-by: NBen Gardner <bgardner@wabtec.com>
Acked-by: NJean Delvare <khali@linux-fr.org>
Signed-off-by: NDavid Brownell <dbrownell@users.sourceforge.net>
Cc: Sam Ravnborg <sam@ravnborg.org>
Cc: Haavard Skinnemoen <hskinnemoen@atmel.com>
Cc: Philipp Zabel <philipp.zabel@gmail.com>
Cc: Russell King <rmk@arm.linux.org.uk>
Signed-off-by: NAndrew Morton <akpm@linux-foundation.org>
Signed-off-by: NLinus Torvalds <torvalds@linux-foundation.org>

Add support for another variant of the VT8237. I couldn't test
I2C block support but I assume it is present as well.
Signed-off-by: NJean Delvare <khali@linux-fr.org>

I2C block read is supported since the ICH5. I couldn't get it to work
using the block buffer, so it's using the old-style byte-by-byte mode
for now.

Note: I'm also updating the driver author... The i2c-i801 driver was
really written by Mark Studebaker, even though he based his work on
the i2c-piix4 driver which was written by Philip Edelbrock.
Signed-off-by: NJean Delvare <khali@linux-fr.org>

Signed-off-by: NJean Delvare <khali@linux-fr.org>

This mimics the behavior of actual SMBus chips better.
Signed-off-by: NJean Delvare <khali@linux-fr.org>
Cc: Mark M. Hoffman <mhoffman@lightlink.com>

There's a new script named i2c-stub-from-dump that can be very helpful
when working with the i2c-stub driver.
Signed-off-by: NJean Delvare <khali@linux-fr.org>

Signed-off-by: NBart Van Assche <bart.vanassche@gmail.com>
Signed-off-by: NJean Delvare <khali@linux-fr.org>

I'm amazed that this old piece of documentation managed to survive
until today.
Signed-off-by: NJean Delvare <khali@linux-fr.org>

Signed-off-by: NAdrian Bunk <bunk@kernel.org>

Rename I2C_FUNC_SMBUS_HWPEC_CALC as I2C_FUNC_SMBUS_PEC, and list that
functionality as always available through the software implementation.
Update documentation accordingly (and list similar requirements).

The way it's currently packaged doesn't present the capability in a
useful way.
Signed-off-by: NDavid Brownell <dbrownell@users.sourceforge.net>
Signed-off-by: NJean Delvare <khali@linux-fr.org>

Add support for multiple chips to i2c-stub. I've changed the memory
allocation scheme from static to dynamic, so that we don't waste too
much memory.
Signed-off-by: NJean Delvare <khali@linux-fr.org>
Acked-by: NMark M. Hoffman <mhoffman@lightlink.com>