linux-toradex.git/drivers/w1/slaves, branch v3.4.2

DS2781 Maxim Stand-Alone Fuel Gauge battery and w1 slave drivers

2012-03-08T19:15:33+00:00

Signed-off-by: Renata Sayakhova 
Acked-by: Evgeniy Polyakov 
Signed-off-by: Greg Kroah-Hartman

w1_bq27000: Only one thread can access the bq27000 at a time.

2012-02-24T22:25:50+00:00

If multiple threads try, they trip over each other badly.

Signed-off-by: NeilBrown 
Acked-by: Evgeniy Polyakov 
Signed-off-by: Greg Kroah-Hartman

w1_bq27000 - remove w1_bq27000_write

2012-02-24T22:25:50+00:00

The function is never used so remove it to avoid bit-rot.
It can trivially be re-added if there is ever a need.

Signed-off-by: NeilBrown 
Acked-by: Evgeniy Polyakov 
Signed-off-by: Greg Kroah-Hartman

w1_bq27000: remove unnecessary NULL test.

2012-02-24T22:25:50+00:00

As recent change means that we now dereference 'dev' before testing
for NULL.

That means either the change was wrong, or the test isn't needed.
As this function is only called from one driver (bq27x000_battery) and
it always passed a non-NULL dev, it seems good to assume that the
test isn't needed.

So remove it.

Reported-by: Dan Carpenter 
Signed-off-by: NeilBrown 
Acked-by: Evgeniy Polyakov 
Signed-off-by: Greg Kroah-Hartman

w1: Fix w1_bq27000

2012-02-16T01:17:50+00:00

w1_bq27000 adds a bq27000-battery platform device but does not provide
platform data for it. This causes the bq27x00 driver to dereference a NULL
pointer.
So provide the appropriate platform data.  This requires modifying
w1_bq27000_read so that it find the w1 device as the parent of the bq device.

Also there is no point exporting w1_bq27000_read as nothing else uses it
or could use it.  So make it static.

Finally, as there is no way to track how many batteries have been found, and
we will probably only find one, use an id number of '-1' to assert that this
is a unique instance.

Signed-off-by: NeilBrown 
Tested-by: Thomas Weber 
Acked-by: Evgeniy Polyakov 
Signed-off-by: Greg Kroah-Hartman

W1: w1_therm: release the bus during conversion on externally powered devices

2011-11-17T19:47:56+00:00

w1_therm devices can either be bus powered or externally powered.

When device is bus powered during temperature conversion the bus
have to be left high to provide necessary power. Some masters also allow
strong power-up to be enabled in this case.
Naturally, no communication over bus can occur during that time.

However, if device has external power then there is no such restriction,
and host can talk to other devices during temperature conversion.

There is command which allows us to check how device is powered,
this patch uses it to release the bus on externally w1_therm powered devices
during temperature conversion.

Also, this changes uninterruptible sleeps there into interruptible ones to
avoid long uninterruptible sleep if w1 subsystem happens to grab bus for
scan during w1_therm_read().

Signed-off-by: Maciej Szmigiero 
Acked-by: Evgeniy Polyakov 
Signed-off-by: Greg Kroah-Hartman

drivers/power/ds2780_battery.c: add a nolock function to w1 interface

2011-11-02T23:07:03+00:00

Adds a nolock function to the w1 interface to avoid locking the
mutex if needed.

Signed-off-by: Clifton Barnes 
Cc: Evgeniy Polyakov 
Cc: 
Cc: 
Signed-off-by: Andrew Morton 
Signed-off-by: Linus Torvalds

w1: ds2760 and ds2780, use ida for id and ida_simple_get() to get it

2011-11-02T23:07:02+00:00

Straightforward.  As an aside, the ida_init calls are not needed as far as
I can see needed.  (DEFINE_IDA does the same already).

Signed-off-by: Jonathan Cameron 
Cc: Evgeniy Polyakov 
Acked-by: Clifton Barnes 
Signed-off-by: Andrew Morton 
Signed-off-by: Linus Torvalds

MAINTAINERS: Evgeniy has moved

2011-08-25T23:25:33+00:00

Signed-off-by: Evgeniy Polyakov 
Signed-off-by: Andrew Morton 
Signed-off-by: Linus Torvalds

w1: fix for loop in w1_f29_remove_slave()

2011-08-25T23:25:33+00:00

The for loop was looking for i <= 0 instead of i >= 0 so this function
never did anything.  Also we started with i = NB_SYSFS_BIN_FILES instead
of "NB_SYSFS_BIN_FILES - 1" which is an off by one bug.

Reported-by: Bojan Prtvar 
Signed-off-by: Dan Carpenter 
Acked-by: Jean-Franois Dagenais 
Cc: Evgeniy Polyakov 
Signed-off-by: Andrew Morton 
Signed-off-by: Linus Torvalds