linux-stable.git/drivers/i2c, branch linux-3.13.y

i2c: cpm: Fix build by adding of_address.h and of_irq.h

2014-04-03T19:02:36+00:00

commit 5f12c5eca6e6b7aeb4b2028d579f614b4fe7a81f upstream.

Fixes a build break due to the undeclared use of irq_of_parse_and_map()
and of_iomap().  This build break was apparently introduced while the
driver was unbuildable due to the bug fixed by
62c19c9d29e65086e5ae76df371ed2e6b23f00cd ("i2c: Remove usage of
orphaned symbol OF_I2C").  When 62c19c was added in v3.14-rc7,
the driver was enabled again, breaking the powerpc mpc85xx_defconfig
and mpc85xx_smp_defconfig.

62c19c is marked for stable, so this should go there as well.

Reported-by: Geert Uytterhoeven 
Signed-off-by: Scott Wood 
Signed-off-by: Wolfram Sang 
Signed-off-by: Greg Kroah-Hartman

i2c: Remove usage of orphaned symbol OF_I2C

2014-03-24T04:44:15+00:00

commit 62c19c9d29e65086e5ae76df371ed2e6b23f00cd upstream.

The symbol is an orphan, don't depend on it anymore.

Signed-off-by: Richard Weinberger 
[wsa: enhanced commit message]
Signed-off-by: Wolfram Sang 
Fixes: 687b81d083c0 (i2c: move OF helpers into the core)
Signed-off-by: Greg Kroah-Hartman

i2c: mv64xxx: refactor message start to ensure proper initialization

2014-02-22T21:34:59+00:00

commit 79970db213344b4a4034645db5ebfc31571f3fa3 upstream.

Because the offload mechanism can fall back to a standard transfer,
having two seperate initialization states is unfortunate. Let's just
have one state which does things consistently. This fixes a bug where
some preparation was missing when the fallback happened. And it makes
the code much easier to follow. To implement this, we put the check
if offload is possible at the top of the offload setup function.

Signed-off-by: Wolfram Sang 
Tested-by: Gregory CLEMENT 
Fixes: 930ab3d403ae (i2c: mv64xxx: Add I2C Transaction Generator support)
Signed-off-by: Greg Kroah-Hartman

i2c: piix4: Add support for AMD ML and CZ SMBus changes

2014-02-06T19:34:07+00:00

commit 032f708bc4f6da868ec49dac48ddf3670d8035d3 upstream.

The locations of SMBus register base address and enablement bit are changed
from AMD ML, which need this patch to be supported.

Signed-off-by: Shane Huang 
Reviewed-by: Jean Delvare 
Signed-off-by: Wolfram Sang 
Signed-off-by: Greg Kroah-Hartman

i2c: mv64xxx: Fix bus hang on A0 version of the Armada XP SoCs

2014-02-06T19:34:07+00:00

commit 6cf70ae928bae17077efc0d528dec49bc380438b upstream.

The first variants of Armada XP SoCs (A0 stepping) have issues related
to the i2c controller which prevent to use the offload mechanism and
lead to a kernel hang during boot.

The commit introduces a new the compatible string
marvell,mv78230-a0-i2c for the i2c controller. When this compatible
string is used the driver disables the offload mechanism and the
kernel no more hangs on these SoCs.

Signed-off-by: Gregory CLEMENT 
Reported-by: Andrew Lunn 
Acked-by: Wolfram Sang 
Acked-by: Arnd Bergmann 
Fixes: 930ab3d403ae (i2c: mv64xxx: Add I2C Transaction Generator support)
Signed-off-by: Jason Cooper 
Signed-off-by: Greg Kroah-Hartman

i2c: imx: Check the return value from clk_prepare_enable()

2013-12-12T21:48:22+00:00

clk_prepare_enable() may fail, so let's check its return value and propagate it
in the case of error.

Signed-off-by: Fabio Estevam 
Signed-off-by: Wolfram Sang

i2c: mux: Inherit retry count and timeout from parent for muxed bus

2013-12-12T21:39:28+00:00

If a muxed i2c bus gets created the default retry count and
timeout of the muxed bus is zero. Hence it it possible that you
end up with a situation where the parent controller sets a default
retry count and timeout which gets applied and used while the muxed
bus (using the same controller) has a default retry count of zero
and a default timeout of 1s (set in i2c_add_adapter()). This can be
solved by initializing the retry count and timeout of the muxed
bus with the values used by the the parent at creation time.

Signed-off-by: Elie De Brauwer 
Signed-off-by: Wolfram Sang

Merge branch 'i2c/for-current' of git://git.kernel.org/pub/scm/linux/kernel/git/wsa/linux

2013-11-29T17:55:13+00:00

Pull i2c fixes from Wolfram Sang:
 "Some easy but needed fixes for i2c drivers since rc1"

* 'i2c/for-current' of git://git.kernel.org/pub/scm/linux/kernel/git/wsa/linux:
  i2c: bcm2835: Linking platform nodes to adapter nodes
  i2c: omap: raw read and write endian fix
  i2c: i2c-bcm-kona: Fix module build
  i2c: i2c-diolan-u2c: different usb endpoints for DLN-2-U2C
  i2c: bcm-kona: remove duplicated include
  i2c: davinci: raw read and write endian fix

i2c: bcm2835: Linking platform nodes to adapter nodes

2013-11-28T08:47:53+00:00

In order to find I2C devices in the device tree, the platform nodes
have to be known by the I2C core. This requires setting the
dev.of_node parameter of the adapter.

Signed-off-by: Florian Meier 
Tested-by: Stephen Warren 
Signed-off-by: Wolfram Sang

i2c: omap: raw read and write endian fix

2013-11-27T18:26:05+00:00

All OMAP IP blocks expect LE data, but CPU may operate in BE mode.
Need to use endian neutral functions to read/write h/w registers.
I.e instead of __raw_read[lw] and __raw_write[lw] functions code
need to use read[lw]_relaxed and write[lw]_relaxed functions.
If the first simply reads/writes register, the second will byteswap
it if host operates in BE mode.

Changes are trivial sed like replacement of __raw_xxx functions
with xxx_relaxed variant.

Signed-off-by: Victor Kamensky 
Signed-off-by: Taras Kondratiuk 
Signed-off-by: Wolfram Sang