kernel/linux.git/include/linux/i2c.h, branch linux-2.6.28.y

i2c: Add info->archdata field

2008-10-22T18:21:33+00:00

If present the info->archdata is copied into the dev->archdata. Some (OpenFirmware) platforms need it. Signed-off-by: Anton Vorontsov Signed-off-by: Jean Delvare

i2c: Clean up

2008-10-22T18:21:32+00:00

Fix most checkpatch.pl errors and warnings. This includes replacing spaces with tabs in many places, adding and removing spaces, and folding long lines. Also complete a couple prototypes to make it clearer what the parameters represent. Signed-off-by: Jean Delvare

i2c: Drop 2-byte address block transfer defines

2008-10-22T18:21:31+00:00

We have no users and no implementers for these transfer types so it makes little sense to define functionality bits for them. Signed-off-by: Jean Delvare

i2c: Constify i2c_get_clientdata's parameter

2008-10-22T18:21:31+00:00

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

i2c: Make clear what the class field of i2c_adapter is good for

2008-10-22T18:21:30+00:00

Make clear what the class field of i2c_adapter is good for. Signed-off-by: Wolfram Sang Signed-off-by: Jean Delvare

i2c: Add missing kerneldoc descriptions

2008-08-28T06:33:23+00:00

Add missing kernel descriptions of struct i2c_driver members. Signed-off-by: Jean Delvare Acked-by: Randy Dunlap Cc: David Brownell

i2c: Add detection capability to new-style drivers

2008-07-14T20:38:36+00:00

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

i2c: Export the i2c_bus_type symbol

2008-07-14T20:38:35+00:00

Export the root of the i2c bus so that PowerPC device tree code can iterate over devices on the i2c bus. Signed-off-by: Jon Smirl Signed-off-by: Jean Delvare

i2c: Let bus drivers add SPD to their class

2008-07-14T20:38:29+00:00

Let general purpose I2C/SMBus bus drivers add SPD to their class. Once this is done, we will be able to tell the eeprom driver to only probe for SPD EEPROMs and similar on these buses. Note that I took a conservative approach here, adding I2C_CLASS_SPD to many drivers that have no idea whether they can host SPD EEPROMs or not. This is to make sure that the eeprom driver doesn't stop probing buses where SPD EEPROMs or equivalent live. So, bus driver maintainers and users should feel free to remove the SPD class from drivers those buses never have SPD EEPROMs or they don't want the eeprom driver to bind to them. Likewise, feel free to add the SPD class to any bus driver I might have missed. Signed-off-by: Jean Delvare

i2c: Let framebuffer drivers set their I2C bus class to DDC

2008-07-14T20:38:28+00:00

Let framebuffer drivers set their I2C bus class to DDC. Once this is done, we will be able to tell the eeprom driver to only probe for EDID EEPROMs on these buses. Signed-off-by: Jean Delvare