linux-toradex.git/drivers/w1/slaves, branch v2.6.32.45

w1: w1 temp: fix negative termperature calculation

2010-05-12T21:57:00+00:00

commit 9a6a1ecd9e9b5d046a236da2f7eb6b6812f04229 upstream.

Fix regression caused by commit 507e2fbaaacb6f164b4125b87c5002f95143174b
("w1: w1 temp calculation overflow fix") whereby negative temperatures for
the DS18B20 are not converted properly.

When the temperature exceeds 32767 milli-degrees the temperature overflows
to -32768 millidegrees.  These are both well within the -55 - +125 degree
range for the sensor.

Addresses https://bugzilla.kernel.org/show_bug.cgi?id=12646

Signed-of-by: Ian Dall 
Cc: Evgeniy Polyakov 
Tested-by: Karsten Elfenbein 
Signed-off-by: Andrew Morton 
Signed-off-by: Linus Torvalds 
Signed-off-by: Greg Kroah-Hartman

w1: ds2760_battery: add support for sleep mode feature

2009-06-08T19:25:17+00:00

This adds support for ds2760's sleep mode feature. With this feature
enabled, the chip enters a deep sleep mode and disconnects from the
battery when the w1 line is held down for more than 2 seconds.

This new behaviour can be switched on and off using a new module
parameter.

Signed-off-by: Daniel Mack 
Cc: Szabolcs Gyurko 
Acked-by: Matt Reimer 
Acked-by: Evgeniy Polyakov 
Signed-off-by: Anton Vorontsov

w1: ds2760: add support for EEPROM read and write

2009-06-08T19:25:17+00:00

In order to modify the DS2762's status registers and to add support for
sleep mode, there is need for functions to write the internal EEPROM.

Signed-off-by: Daniel Mack 
Acked-by: Matt Reimer 
Acked-by: Szabolcs Gyurko 
Acked-by: Evgeniy Polyakov 
Signed-off-by: Anton Vorontsov

w1: add missing Kconfig/Makefile entries for DS2431 slave driver

2009-02-28T00:26:21+00:00

Signed-off-by: Herton Ronaldo Krzesinski 
Acked-by: Evgeniy Polyakov 
Signed-off-by: Andrew Morton 
Signed-off-by: Linus Torvalds

w1_ds2433: clear the validcrc flag after a write

2009-02-28T00:26:20+00:00

The w1_ds2433 driver does not read from the hardware if the CRC was valid
on the last read.  The validcrc flag should be cleared after a write so
that the new value can be read.

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

w1: w1 temp calculation overflow fix

2009-02-11T22:25:37+00:00

Addresses http://bugzilla.kernel.org/show_bug.cgi?id=12646

When the temperature exceeds 32767 milli-degrees the temperature overflows
to -32768 millidegrees.  These are bothe well within the -55 - +125 degree
range for the sensor.

Fix overflow in left-shift of a u8.

Signed-off-by: Ian Dall 
Signed-off-by: Evgeniy Polyakov 
Cc: 
Signed-off-by: Andrew Morton 
Signed-off-by: Linus Torvalds

hdq: bQ27000 HDQ Slave Interface Driver

2008-11-13T01:17:18+00:00

Provide the BQ27000 slave interface driver.

Signed-off-by: Madhusudhan Chikkature
Acked-by: Evgeniy Polyakov 
Signed-off-by: Andrew Morton 
Signed-off-by: Linus Torvalds

x86: sysfs: kill owner field from attribute

2008-10-20T15:52:42+00:00

Tejun's commit 7b595756ec1f49e0049a9e01a1298d53a7faaa15 made sysfs
attribute->owner unnecessary.  But the field was left in the structure to
ease the merge.  It's been over a year since that change and it is now
time to start killing attribute->owner along with its users - one arch at
a time!

This patch is attempt #1 to get rid of attribute->owner only for
CONFIG_X86_64 or CONFIG_X86_32 .  We will deal with other arches later on
as and when possible - avr32 will be the next since that is something I
can test.  Compile (make allyesconfig / make allmodconfig / custom config)
and boot tested.

akpm: the idea is that we put the declaration of sttribute.owner inside
`#ifndef CONFIG_X86'.  But that proved to be too ambitious for now because
new usages kept on turning up in subsystem trees.

[akpm: remove the ifdef for now]
Signed-off-by: Parag Warudkar 
Cc: Greg KH 
Cc: Ingo Molnar 
Cc: Tejun Heo 
Cc: Len Brown 
Cc: Jens Axboe 
Cc: Jean Delvare 
Cc: Roland Dreier 
Cc: David Brownell 
Cc: Alessandro Zummo 
Signed-off-by: Andrew Morton 
Signed-off-by: Linus Torvalds

w1: new driver. DS2431 chip

2008-10-16T18:21:51+00:00

[akpm@linux-foundation.org: minor fixlets and cleanups]
Signed-off-by: Bernhard Weirich 
Signed-off-by: Evgeniy Polyakov 
Cc: Ben Gardner 
Signed-off-by: Andrew Morton 
Signed-off-by: Linus Torvalds

W1: w1_therm consistent mutex access code cleanup

2008-10-16T18:21:50+00:00

sl->master->mutex and dev->mutex refer to the same mutex variable, but be
consistent and use the same set of pointers for the lock and unlock calls.
 It is less confusing (and one less pointer dereference this way).

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