linux-stable.git/drivers/i2c, branch v3.12.20

i2c: i801: enable Intel BayTrail SMBUS

2014-05-05T09:26:00+00:00

commit 1b31e9b76ef8c62291e698dfdb973499986a7f68 upstream.

Add Device ID of Intel BayTrail SMBus Controller.

Signed-off-by: Chew, Kean ho 
Signed-off-by: Chew, Chiau Ee 
Reviewed-by: Jean Delvare 
Signed-off-by: Wolfram Sang 
Signed-off-by: Jiri Slaby

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

2014-04-03T08:32:27+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: Jiri Slaby

i2c: i801: Add Device IDs for Intel Wildcat Point-LP PCH

2014-04-01T20:12:08+00:00

commit afc659241258b40b683998ec801d25d276529f43 upstream.

This patch adds the SMBus Device IDs for the Intel Wildcat Point-LP PCH.

Signed-off-by: James Ralston 
Signed-off-by: Wolfram Sang 
Signed-off-by: Jiri Slaby

i2c: Remove usage of orphaned symbol OF_I2C

2014-03-24T08:44:55+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: Jiri Slaby

i2c: mv64xxx: refactor message start to ensure proper initialization

2014-02-22T21:32:29+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

2014-02-06T19:22:20+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

2014-02-06T19:22:19+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: mux: gpio: use gpio_set_value_cansleep()

2013-12-04T19:05:11+00:00

commit 250ad590d6f12d93f4d85be305b0a598d609232e upstream.

Some gpio chips may have get/set operations that
can sleep. gpio_set_value() only works for chips
which do not sleep, for the others we will get a
kernel warning. Using gpio_set_value_cansleep()
will work for both chips that do sleep and those
who don't.

Signed-off-by: Ionut Nicu 
Acked-by: Peter Korsgaard 
Signed-off-by: Wolfram Sang 
Signed-off-by: Greg Kroah-Hartman

i2c: mux: gpio: use reg value for i2c_add_mux_adapter

2013-12-04T19:05:11+00:00

commit 8c0ec2500eeb89749341884a972860d7f9e56f9c upstream.

The i2c-mux driver requires that the chan_id parameter
passed to the i2c_add_mux_adapter() function is equal
to the reg value for that adapter:

for_each_child_of_node(mux_dev->of_node, child) {
	ret = of_property_read_u32(child, "reg", ®);
	if (ret)
		continue;
	if (chan_id == reg) {
		priv->adap.dev.of_node = child;
		break;
	}
}

The i2c-mux-gpio driver uses an internal logical index
for chan_id when calling i2c_add_mux_adapter() instead
of using the reg value.

Because of this, there will problems in selecting the
right adapter when the i2c-mux-gpio's index into
mux->data.values doesn't match the reg value.

An example of such a case:

mux->data.values = { 1, 0 }

For chan_id = 0, i2c-mux will bind the adapter to the
of_node with reg = <0>, but when it will call the
select() callback with chan_id set to 0, the i2c-mux-gpio
will use it as an index into mux->data.values and it will
actually select the bus with reg = <1>.

Signed-off-by: Ionut Nicu 
Acked-by: Alexander Sverdlin 
Signed-off-by: Wolfram Sang 
Signed-off-by: Greg Kroah-Hartman

i2c: wmt: add missing clk_disable_unprepare() on error

2013-12-04T19:05:11+00:00

commit 2dc9688a106886db7191d30f30ffd61fde827efd upstream.

Add the missing clk_disable_unprepare() before return
from wmt_i2c_reset_hardware() in the error handling case.

Signed-off-by: Wei Yongjun 
Signed-off-by: Wolfram Sang 
Signed-off-by: Greg Kroah-Hartman