linux.git/drivers/w1, branch v2.6.27

w1/ds2482: Convert to a new-style driver

2008-07-16T17:30:07+00:00

The new-style ds2482 driver implements the optional detect() callback
to cover the use cases of the legacy driver. I'm curious if anyone
really needs this though, so it might be removed in the feature.

Signed-off-by: Jean Delvare

drivers: replace remaining FUNCTION occurrences

2008-04-30T15:29:53+00:00

__FUNCTION__ is gcc-specific, use __func__

Signed-off-by: Harvey Harrison 
Cc: Ben Dooks 
Signed-off-by: Andrew Morton 
Signed-off-by: Linus Torvalds

ds1wm: report bus reset error

2008-03-05T00:35:12+00:00

The patch replaces dev_dbg() by dev_err(), so the user could actually see the
error, instead of wondering why w1 doesn't work.  The root cause of the bus
reset error isn't yet debugged though, but this sometimes happens on iPaq
H5555.

And while I'm at it, some cosmetic cleanups also made (few lines were using
spaces instead of tabs).

Signed-off-by: Anton Vorontsov 
Acked-by: Evgeniy Polyakov 
Signed-off-by: Andrew Morton 
Signed-off-by: Linus Torvalds

ds1wm: should check for IS_ERR(clk) instead of NULL

2008-03-05T00:35:12+00:00

On the error condition clk_get() returns ERR_PTR(..), so checking for NULL
doesn't work.  ds1wm module causes a kernel oops when ds1wm clock isn't
registered.

This patch converts NULL check to IS_ERR(), plus uses PTR_ERR()
for the return code.

Signed-off-by: Anton Vorontsov 
Acked-by: Evgeniy Polyakov 
Signed-off-by: Andrew Morton 
Signed-off-by: Linus Torvalds

DS1WM: decouple host IRQ and INTR active state settings

2008-02-07T16:42:06+00:00

The DS1WM driver incorrectly infers the IAS bit (1-wire interrupt active
high) from IRQ settings.  There are devices that have IAS=0 but still need
the IRQ to trigger on a rising edge.  With this patch, machines with DS1WM
that need IAS=1 have to set .active_high=1 in the ds1wm_platform_data.

Signed-off-by: Philipp Zabel 
Acked-by: Evgeniy Polyakov 
Acked-by: Matt Reimer 
Signed-off-by: Andrew Morton 
Signed-off-by: Linus Torvalds

w1-gpio: add GPIO w1 bus master driver

2008-02-06T18:41:15+00:00

Add a GPIO 1-wire bus master driver.  The driver used the GPIO API to
control the wire and the GPIO pin can be specified using platform data
similar to i2c-gpio.  The driver was tested with AT91SAM9260 + DS2401.

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

W1: w1_therm.c standardize units to millidegrees C

2008-02-06T18:41:10+00:00

Standardize the temperature units to millidegrees C for the two sensor
conversion routines.  Previously the routines were,

w1_DS18B20_convert_temp degrees C
w1_DS18S20_convert_temp millidegrees C

Unfortunately this will break any program using the ds18b20 value as it
will now be 1000 times bigger.  Fortunately there can't be that many users
out there, or some of these bugs will have been fixed by now, such as the
negative C error (see previous patch) that makes me think the ds18b20 is
the better choice to change because of the current bugs.

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

w1: remove unused and confusing variable.

2008-02-06T18:41:10+00:00

Remvoe variable which actually is not used (except assigning it a value)
and confusing break out of the family checking loop.  Found by Harry Mason.

Signed-off-by: Evgeniy Polyakov 
Cc: Harry J Mason 
Signed-off-by: Andrew Morton 
Signed-off-by: Linus Torvalds

i2c: normal_i2c can be made const (remaining drivers)

2008-01-27T17:14:47+00:00

Signed-off-by: Jean Delvare

W1: w1_therm.c is flagging 0C etc as invalid

2008-01-22T17:17:48+00:00

The extra rom[0] check is flagging valid temperatures as invalid when
there is already a CRC data transmission check.

w1_therm_read_bin()
	if (rom[8] == crc && rom[0])
		verdict = 1;

Requiring rom[0] to be non-zero will flag as invalid temperature
conversions when the low byte is zero, specifically the temperatures 0C,
16C, 32C, 48C, -16C, -32C, and -48C.

The CRC check is produced on the device for the previous 8 bytes and is
required to ensure the data integrity in transmission.  I don't see why the
extra check for rom[0] being non-zero is in there.  Evgeniy Polyakov didn't
know either.  Just for a check I unplugged the sensor, executed a
temperature conversion, and read the results.  The read was all ff's, which
also failed the CRC, so it doesn't need to protect against a disconnected
sensor.

I have more extensive patches in the work, but these two trivial ones will
do for today.  I would like to hear from people who use the ds2490 USB to
one wire dongle.  1 if you would be willing to test the patches as I
currently only have the one sensor on a short parisite powered wire, 2 if
there is any cheap sources for the ds2490.

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

linux.git/drivers/w1, branch v2.6.27

w1/ds2482: Convert to a new-style driver

drivers: replace remaining __FUNCTION__ occurrences

ds1wm: report bus reset error

ds1wm: should check for IS_ERR(clk) instead of NULL

DS1WM: decouple host IRQ and INTR active state settings

w1-gpio: add GPIO w1 bus master driver

W1: w1_therm.c standardize units to millidegrees C

w1: remove unused and confusing variable.

i2c: normal_i2c can be made const (remaining drivers)

W1: w1_therm.c is flagging 0C etc as invalid

drivers: replace remaining FUNCTION occurrences