linux-toradex.git/include/linux/i2c.h, branch tegra-12r3

[ARM]tegra:i2c: Adding i2c slave support apis.

2011-04-26T22:49:24+00:00

To support the i2c slave functionality in the kernel, adding the
framework so that chip specific slave driver can be plugged in.

Adding slave adapter and alogithms in framework so that slave bus driver
can register chip specific driver.

Original-Change-Id: Ie002dbd3b021f70814b455471e66a5da378ab3e9
Reviewed-on: http://git-master/r/14206
Reviewed-by: Laxman Dewangan 
Tested-by: Laxman Dewangan 
Reviewed-by: Alok Chauhan 
Reviewed-by: Scott Williams 
Change-Id: I92b6bc4f3953a9edc7f9414a65b69005d2bbf8db

i2c: Multiplexed I2C bus core support

2010-08-11T16:21:02+00:00

Add multiplexed bus core support. I2C multiplexer and switches
like pca954x get instantiated as new adapters per port.

Signed-off-by: Michael Lawnick 
Acked-by: Rodolfo Giometti 
Signed-off-by: Jean Delvare

i2c: Use a separate mutex for userspace client lists

2010-08-11T16:21:01+00:00

Moving userspace-instantiated clients to separate lists wasn't nearly
enough to avoid deadlocks in multiplexed bus cases. We also want to
have a dedicated mutex to protect each list.

Signed-off-by: Jean Delvare 
Cc: Michael Lawnick

i2c: Move adapter locking helpers to i2c-core

2010-08-11T16:20:58+00:00

Uninline i2c adapter locking helper functions, move them to i2c-core,
and use them in i2c-core itself. The functions are still exported for
external users. This makes future updates to the locking model (which
will be needed for multiplexing support) possible and transparent.

Signed-off-by: Jean Delvare 
Cc: Michael Lawnick

V4L/DVB: Use custom I2C probing function mechanism

2010-08-11T16:20:57+00:00

Now that i2c-core offers the possibility to provide custom probing
function for I2C devices, let's make use of it.

Signed-off-by: Jean Delvare 
Acked-by: Mauro Carvalho Chehab

i2c: Add support for custom probe function

2010-08-11T16:20:56+00:00

The probe method used by i2c_new_probed_device() may not be suitable
for all cases. Let the caller provide its own, optional probe
function.

Signed-off-by: Jean Delvare 
Acked-by: Mauro Carvalho Chehab

i2c.h: fix kernel-doc warnings

2010-08-10T22:33:09+00:00

Fix kernel-doc warnings in linux/i2c.h:

  Warning(include/linux/i2c.h:176): No description found for parameter 'alert'
  Warning(include/linux/i2c.h:259): No description found for parameter 'of_node'

Signed-off-by: Randy Dunlap 
Signed-off-by: Linus Torvalds

Merge remote branch 'origin' into secretlab/next-devicetree

2010-05-22T06:36:56+00:00

Merging in current state of Linus' tree to deal with merge conflicts and
build failures in vio.c after merge.

Conflicts:
	drivers/i2c/busses/i2c-cpm.c
	drivers/i2c/busses/i2c-mpc.c
	drivers/net/gianfar.c

Also fixed up one line in arch/powerpc/kernel/vio.c to use the
correct node pointer.

Signed-off-by: Grant Likely

i2c-core: Use per-adapter userspace device lists

2010-05-04T09:09:28+00:00

Using a single list for all userspace devices leads to a dead lock
on multiplexed buses in some circumstances (mux chip instantiated
from userspace). This is solved by using a separate list for each
bus segment.

Signed-off-by: Jean Delvare 
Acked-by: Michael Lawnick

i2c/of: Allow device node to be passed via i2c_board_info

2010-04-29T00:21:56+00:00

The struct device_node *of_node pointer is moving out of dev->archdata
and into the struct device proper.  of_i2c.c needs to set the of_node
pointer before the device is registered.  Since the i2c subsystem
doesn't allow 2 stage allocation and registration of i2c devices, the
of_node pointer needs to be passed via the i2c_board_info structure
so that it is set prior to registration.

This patch adds of_node to struct i2c_board_info (conditional on
CONFIG_OF), sets of_node in i2c_new_device(), and modifies of_i2c.c
to use the new parameter.  The calling of dev_archdata_set_node()
from of_i2c will be removed in a subsequent patch when of_node is
removed from archdata and all users are converted over.

Signed-off-by: Grant Likely