linux-toradex.git/drivers/iio/potentiometer, branch v5.1 Linux kernel for Apalis and Colibri modules iio: potentiometer: Add driver for Microchip MCP41xxx/42xxx 2018-11-25T12:35:26+00:00 Chris Coffey cmc@babblebit.net 2018-11-20T14:17:13+00:00 092cb71a604e2d8dd3b79fddef779a2d4aaad5a8 This patch adds driver support for the Microchip MCP41xxx/42xxx family of digital potentiometers: DEVICE Wipers Positions Resistance (kOhm) MCP41010 1 256 10 MCP41050 1 256 50 MCP41100 1 256 100 MCP42010 2 256 10 MCP42050 2 256 50 MCP42100 2 256 100 Datasheet: http://ww1.microchip.com/downloads/en/devicedoc/11195c.pdf Signed-off-by: Chris Coffey <cmc@babblebit.net> Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com> 
This patch adds driver support for the Microchip MCP41xxx/42xxx family
of digital potentiometers:

DEVICE      Wipers  Positions   Resistance (kOhm)
MCP41010    1       256         10
MCP41050    1       256         50
MCP41100    1       256         100
MCP42010    2       256         10
MCP42050    2       256         50
MCP42100    2       256         100

Datasheet: http://ww1.microchip.com/downloads/en/devicedoc/11195c.pdf

Signed-off-by: Chris Coffey <cmc@babblebit.net>
Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
iio: potentiometer: mcp4131: use of_device_get_match_data() 2018-11-16T18:32:35+00:00 Slawomir Stepien sst@poczta.fm 2018-11-16T09:47:21+00:00 853bfaf43555e6352e4f9d7856603f6443292d05 Try to get the device's data using OF API. In case of failure, fallback to the spi_get_device_id() method. Signed-off-by: Slawomir Stepien <sst@poczta.fm> Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com> 
Try to get the device's data using OF API. In case of failure, fallback
to the spi_get_device_id() method.

Signed-off-by: Slawomir Stepien <sst@poczta.fm>
Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
iio: potentiometer: tpl0102: add IIO_AVAIL_RANGE support 2018-11-11T15:29:45+00:00 Matt Ranostay matt.ranostay@konsulko.com 2018-10-28T20:43:54+00:00 74cf7b8614bc0ddad9ba00857b54cec1ef2ac635 Report the step range of the respective potentiometers that are possible to userspace. Signed-off-by: Matt Ranostay <matt.ranostay@konsulko.com> Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com> 
Report the step range of the respective potentiometers that are
possible to userspace.

Signed-off-by: Matt Ranostay <matt.ranostay@konsulko.com>
Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
iio: potentiometer: tpl0102: switch to using pointer to chip config 2018-11-11T15:29:42+00:00 Matt Ranostay matt.ranostay@konsulko.com 2018-10-24T10:38:57+00:00 ee2303515e7555abb93297d8b8d8a55b0d156388 More concise to have a pointer to tpl0102_cfg struct in the iio_priv data than an integer to an index of an array. Signed-off-by: Matt Ranostay <matt.ranostay@konsulko.com> Reviewed-by: Slawomir Stepien <sst@poczta.fm> Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com> 
More concise to have a pointer to tpl0102_cfg struct in the iio_priv
data than an integer to an index of an array.

Signed-off-by: Matt Ranostay <matt.ranostay@konsulko.com>
Reviewed-by: Slawomir Stepien <sst@poczta.fm>
Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
iio: potentiometer: mcp4531: switch to SPDX license identifier 2018-08-20T18:26:25+00:00 Peter Rosin peda@axentia.se 2018-08-20T10:01:11+00:00 0ba56985824e2232ac2d8dfe5e793385c36527d4 Drop the boilerplate license text and use the correct MODULE_LICENSE. Signed-off-by: Peter Rosin <peda@axentia.se> Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com> 
Drop the boilerplate license text and use the correct MODULE_LICENSE.

Signed-off-by: Peter Rosin <peda@axentia.se>
Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
iio: potentiometer: mcp4018: use the correct MODULE_LICENSE 2018-08-20T18:25:07+00:00 Peter Rosin peda@axentia.se 2018-08-20T10:01:10+00:00 b9ea8c31e36e8e244becf5250ec28d82b8faf4b0 The file is GPL v2 only. Signed-off-by: Peter Rosin <peda@axentia.se> Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com> 
The file is GPL v2 only.

Signed-off-by: Peter Rosin <peda@axentia.se>
Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
iio: potentiometer: merge calls to of_match_device and of_device_get_match_data 2018-08-19T19:16:39+00:00 Julia Lawall Julia.Lawall@lip6.fr 2018-05-21T09:49:10+00:00 ce7c637a8368d0293649a4acc0b89930295cb62a Drop call to of_match_device, which is subsumed by the subsequent call to of_device_get_match_data. The code becomes simpler, and a temporary variable can be dropped. The semantic match that makes this change is as follows: (http://coccinelle.lip6.fr/) // <smpl> @r@ local idexpression match; identifier i; expression x, dev, e, e1; @@ - match@i = of_match_device(x, dev); - if (match) e = of_device_get_match_data(dev); - else e = e1; + e = of_device_get_match_data(dev); + if (!e) e = e1; @@ identifier r.i; @@ - const struct of_device_id *i; ... when != i // </smpl> Signed-off-by: Julia Lawall <Julia.Lawall@lip6.fr> Reviewed-by: Peter Rosin <peda@axentia.se> Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com> 
Drop call to of_match_device, which is subsumed by the subsequent
call to of_device_get_match_data.  The code becomes simpler, and a
temporary variable can be dropped.

The semantic match that makes this change is as follows:
(http://coccinelle.lip6.fr/)

// <smpl>
@r@
local idexpression match;
identifier i;
expression x, dev, e, e1;
@@
-        match@i = of_match_device(x, dev);
-        if (match) e = of_device_get_match_data(dev);
-        else e = e1;
+        e = of_device_get_match_data(dev);
+        if (!e) e = e1;

@@
identifier r.i;
@@
- const struct of_device_id *i;
... when != i
// </smpl>

Signed-off-by: Julia Lawall <Julia.Lawall@lip6.fr>
Reviewed-by: Peter Rosin <peda@axentia.se>
Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
iio: potentiometer: mcp4531: switch to using .probe_new 2018-04-15T17:12:51+00:00 Peter Rosin peda@axentia.se 2018-04-11T12:49:15+00:00 c18af98bc875e8f2be99aad13b410f60d34064cf Use the new probe style for i2c drivers. Signed-off-by: Peter Rosin <peda@axentia.se> Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com> 
Use the new probe style for i2c drivers.

Signed-off-by: Peter Rosin <peda@axentia.se>
Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
iio: potentiometer: mcp4018: switch to using .probe_new 2018-04-15T17:09:47+00:00 Peter Rosin peda@axentia.se 2018-04-11T12:49:14+00:00 0f6f400e6980b2eb675289fd0296f916dd4cb0f0 Use the new probe style for i2c drivers. Signed-off-by: Peter Rosin <peda@axentia.se> Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com> 
Use the new probe style for i2c drivers.

Signed-off-by: Peter Rosin <peda@axentia.se>
Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
iio: potentiometer: mcp4018: driver for Microchip digital potentiometers 2018-03-10T16:03:25+00:00 Peter Rosin peda@axentia.se 2018-03-08T19:58:30+00:00 5214ad6dcc1bf72ea60a72741a0143356b8d66b7 Add support for Microchip digital potentiometers and rheostats MCP4017, MCP4018, MCP4019 They all have one wiper with 128 steps and come in 5, 10, 50 and 100 kOhm variations. Datasheet: http://www.microchip.com/downloads/en/DeviceDoc/22147a.pdf Signed-off-by: Peter Rosin <peda@axentia.se> Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com> 
Add support for Microchip digital potentiometers and rheostats
	MCP4017, MCP4018, MCP4019

They all have one wiper with 128 steps and come in 5, 10, 50 and 100 kOhm
variations.

Datasheet: http://www.microchip.com/downloads/en/DeviceDoc/22147a.pdf

Signed-off-by: Peter Rosin <peda@axentia.se>
Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>