Current code uses data_rate as array index in ads1015_read_adc() and uses pga
as array index in ads1015_reg_to_mv, so we must make sure both data_rate and
pga settings are in valid value range.
Return -EINVAL if the setting is out-of-range.
Signed-off-by: NAxel Lin <axel.lin@ingics.com>
Cc: stable@vger.kernel.org
Signed-off-by: NGuenter Roeck <linux@roeck-us.net>

Current code uses channel as array index, so the valid channel value is
0 .. ADS1015_CHANNELS - 1.
Signed-off-by: NAxel Lin <axel.lin@ingics.com>
Cc: stable@vger.kernel.org
Signed-off-by: NGuenter Roeck <linux@roeck-us.net>

This patch adds support for ads1115 device to ads1015 driver.
Based on work of Emiliano Carnati <carnatiatebneuro.com>.
Tested on ARM CPU based board.
Signed-off-by: NEvgeniy A. Dushistov <dushistov@mail.ru>
Signed-off-by: NGuenter Roeck <linux@roeck-us.net>

Convert to use devm_ functions to reduce code size and simplify the code.

Cc: Dirk Eibach <eibach@gdsys.de>
Signed-off-by: NGuenter Roeck <linux@roeck-us.net>

The following build warning is seen in some configurations.

drivers/hwmon/ads1015.c: In function 'show_in':
drivers/hwmon/ads1015.c:129: warning: 'in' may be used uninitialized in this function

Fix by separating the register read function from the code converting the result
into mV.
Signed-off-by: NGuenter Roeck <guenter.roeck@ericsson.com>
Cc: Dirk Eibach <eibach@gdsys.de>
Reviewed-by: NRobert Coulson <robert.coulson@ericsson.com>

This patch converts the drivers in drivers/hwmon/* to use the
module_i2c_driver() macro which makes the code smaller and a bit simpler.
Signed-off-by: NAxel Lin <axel.lin@gmail.com>
Cc: Corentin Labbe <corentin.labbe@geomatys.fr>
Cc: Dirk Eibach <eibach@gdsys.de>
Cc: "Mark M. Hoffman" <mhoffman@lightlink.com>
Cc: Steve Glendinning <steve.glendinning@smsc.com>
Cc: Riku Voipio <riku.voipio@iki.fi>
Cc: Guillaume Ligneul <guillaume.ligneul@gmail.com>
Cc: David George <david.george@ska.ac.za>
Cc: "Hans J. Koch" <hjk@hansjkoch.de>
Cc: Marc Hulsman <m.hulsman@tudelft.nl>
Cc: Rudolf Marek <r.marek@assembler.cz>
Signed-off-by: NGuenter Roeck <guenter.roeck@ericsson.com>

An error while creating sysfs attribute files in the driver's probe function
results in an error abort, but already created files are not removed. This patch
fixes the problem.
Signed-off-by: NGuenter Roeck <guenter.roeck@ericsson.com>
Cc: stable@vger.kernel.org # 3.0+
Cc: Dirk Eibach <eibach@gdsys.de>
Acked-by: NJean Delvare <khali@linux-fr.org>

Make use of the new i2c_smbus_{read,write}_word_swapped functions.
This makes the driver code more compact and readable. It also ensures
proper error handling.
Signed-off-by: NJean Delvare <khali@linux-fr.org>
Acked-by: NJonathan Cameron <jic23@cam.ac.uk>
Acked-by: NGuenter Roeck <guenter.roeck@ericsson.com>
Cc: Dirk Eibach <eibach@gdsys.de>
Cc: "Mark M. Hoffman" <mhoffman@lightlink.com>
Cc: Guillaume Ligneul <guillaume.ligneul@gmail.com>

Configuration for ads1015 gain and datarate is possible via
devicetree or platform data.

This is a followup patch to previous ads1015 patches on Jean Delvares
tree.
Signed-off-by: NDirk Eibach <eibach@gdsys.de>
Signed-off-by: NJean Delvare <khali@linux-fr.org>

It is cheaper to handle attributes individually.
Signed-off-by: NJean Delvare <khali@linux-fr.org>
Acked-by: NDirk Eibach <eibach@gdsys.de>

Signed-off-by: NDirk Eibach <eibach@gdsys.de>
Signed-off-by: NJean Delvare <khali@linux-fr.org>