linux.git/drivers/w1, branch v2.6.29

drivers/w1/masters/w1-gpio.c: fix read_bit()

2009-03-12T23:20:23+00:00

W1 master implementations are expected to return 0 or 1 from their
read_bit() function.  However, not all platforms do return these values
from gpio_get_value() - namely PXAs won't.  Hence the w1 gpio-master needs
to break the result down to 0 or 1 itself.

Signed-off-by: Daniel Mack 
Cc: Ville Syrjala 
Cc: Evgeniy Polyakov 
Cc: David Brownell 
Signed-off-by: Andrew Morton 
Signed-off-by: Linus Torvalds

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

w1: send status messages after command processing

2009-01-08T16:31:14+00:00

Send completion status of the commands to the userspace.  Message and
protocol are described in the documentation.

Signed-off-by: Evgeniy Polyakov 
Cc: Paul Alfille 
Signed-off-by: Andrew Morton 
Signed-off-by: Linus Torvalds

w1: added w1 reset command

2009-01-08T16:31:14+00:00

Command which allows to reset the bus.

Signed-off-by: Evgeniy Polyakov 
Cc: Paul Alfille 
Signed-off-by: Andrew Morton 
Signed-off-by: Linus Torvalds

w1: move w1 commands from defines to enum

2009-01-08T16:31:13+00:00

Signed-off-by: Evgeniy Polyakov 
Cc: Paul Alfille 
Signed-off-by: Andrew Morton 
Signed-off-by: Linus Torvalds

w1: allow master IO commands

2009-01-08T16:31:13+00:00

This small patchset extendes existing commands with reset, master IO and
status messages.  Reset is used to reset the bus for given master device,
master IO command allows to initiate IO against bus itself not selecting
slave device first, which can be used to probe the device for example.
And status messages carry command completion status back to the userspace
(namely very useful to get -ENODEV from when requested device was not
found).

Great thanks to Paul Alfille of OWFS for testing and commands suggestions.

This patch:

Allow starting of IO not against already found slave devices, but against
the bus itself, which can be used for example to probe devices.

[akpm@linux-foundation.org: reindent switch statements]
Signed-off-by: Evgeniy Polyakov 
Cc: Paul Alfille 
Signed-off-by: Andrew Morton 
Signed-off-by: Linus Torvalds

w1: list slaves commands

2009-01-08T16:31:13+00:00

Initiates search (or alarm search) and returns all found devices to
userspace.  Found devices are not added into the system (i.e.  they are
not attached to family devices or bus masters), it will be done via (if
was not done yet) usual timed searching.

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

w1: add touch block command

2009-01-08T16:31:13+00:00

Writes and returns sampled data back to userspace.

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