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path: root/drivers/iio/potentiometer/mcp4531.c
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2023-07-29iio: potentiometer: mcp4531: Use i2c_get_match_data()Biju Das1-68/+71
Replace device_get_match_data() and i2c_match_id() by i2c_get_match _data() by making similar I2C and DT-based matching table. Signed-off-by: Biju Das <biju.das.jz@bp.renesas.com> Link: https://lore.kernel.org/r/20230723102743.102284-1-biju.das.jz@bp.renesas.com Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
2023-05-21iio: Switch i2c drivers back to use .probe()Uwe Kleine-König1-1/+1
After commit b8a1a4cd5a98 ("i2c: Provide a temporary .probe_new() call-back type"), all drivers being converted to .probe_new() and then 03c835f498b5 ("i2c: Switch .probe() to not take an id parameter") convert back to (the new) .probe() to be able to eventually drop .probe_new() from struct i2c_driver. Signed-off-by: Uwe Kleine-König <u.kleine-koenig@pengutronix.de> Link: https://lore.kernel.org/r/20230515205048.19561-1-u.kleine-koenig@pengutronix.de Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
2020-09-21iio:potentiometer:mcp4531: Drop of_match_ptr and CONFIG_OF protections.Jonathan Cameron1-7/+4
These prevent use of this driver with ACPI via PRP0001 and are an example of an anti pattern I'm trying to remove from IIO. Hence drop them from this driver. Also switch to device_get_match_data() from of_ variant and adjust headers to reflect the change. Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com> Reviewed-by: Andy Shevchenko <andy.shevchenko@gmail.com> Cc: Peter Rosin <peda@axentia.se> Link: https://lore.kernel.org/r/20200910173242.621168-9-jic23@kernel.org
2020-06-14iio: remove explicit IIO device parent assignmentAlexandru Ardelean1-1/+0
This patch applies the semantic patch: @@ expression I, P, SP; @@ I = devm_iio_device_alloc(P, SP); ... - I->dev.parent = P; It updates 302 files and does 307 deletions. This semantic patch also removes some comments like '/* Establish that the iio_dev is a child of the i2c device */' But this is is only done in case where the block is left empty. The patch does not seem to cover all cases. It looks like in some cases a different variable is used in some cases to assign the parent, but it points to the same reference. In other cases, the block covered by ... may be just too big to be covered by the semantic patch. However, this looks pretty good as well, as it does cover a big bulk of the drivers that should remove the parent assignment. Signed-off-by: Alexandru Ardelean <alexandru.ardelean@analog.com> Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
2018-08-20iio: potentiometer: mcp4531: switch to SPDX license identifierPeter Rosin1-5/+2
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>
2018-08-19iio: potentiometer: merge calls to of_match_device and of_device_get_match_dataJulia Lawall1-5/+2
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>
2018-04-15iio: potentiometer: mcp4531: switch to using .probe_newPeter Rosin1-73/+72
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>
2017-08-22iio:dpot: drop assign iio_info.driver_moduleJonathan Cameron1-1/+0
The equivalent of this is now done via macro magic when the relevant register call is made. The actual structure elements will shortly go away. Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com> Reviewed-by: Lars-Peter Clausen <lars@metafoo.de>
2017-01-22iio: potentiometer: mcp4531: Export OF device ID table as module aliasesJavier Martinez Canillas1-0/+1
The I2C core always reports a MODALIAS of the form i2c:<foo> even if the device was registered via OF, this means that exporting the OF device ID table device aliases in the module is not needed. But in order to change how the core reports modaliases to user-space, it's better to export it. Signed-off-by: Javier Martinez Canillas <javier@osg.samsung.com> Signed-off-by: Jonathan Cameron <jic23@kernel.org>
2016-11-13iio: mcp4531: provide range of available raw valuesPeter Rosin1-42/+62
Example: $ cat '/sys/bus/iio/devices/iio:device0/out_resistance_raw_available' [0 1 256] Meaning: min 0, step 1 and max 256. Signed-off-by: Peter Rosin <peda@axentia.se> Signed-off-by: Jonathan Cameron <jic23@kernel.org>
2016-07-03iio: potentiometer: mcp4531: Add device tree bindingFlorian Vaussard1-1/+86
This patch adds the necessary device tree binding to allow DT probing of currently supported parts. Signed-off-by: Florian Vaussard <florian.vaussard@heig-vd.ch> Acked-by: Peter Rosin <peda@axentia.se> Signed-off-by: Jonathan Cameron <jic23@kernel.org>
2016-07-03iio: potentiometer: mcp4531: Add support for MCP454x, MCP456x, MCP464x and ↵Florian Vaussard1-0/+72
MCP466x This patch adds support for MCP454x, MCP456x, MCP464x and MCP466x parts. The main difference with currently supported parts (MCP453x and alike) is the addition of a non-volatile memory in order to recall the wiper setting at power-on. This feature is currently not supported and only the volatile memory is used to set the wiper. Signed-off-by: Florian Vaussard <florian.vaussard@heig-vd.ch> Acked-by: Peter Rosin <peda@axentia.se> Signed-off-by: Jonathan Cameron <jic23@kernel.org>
2016-04-03iio: potentiometer: mcp4531: use pointer to access model parametersSlawomir Stepien1-7/+6
Use const pointer to element from model configuration array rather then array index, as it will not change anyway. Signed-off-by: Slawomir Stepien <sst@poczta.fm> Signed-off-by: Peter Rosin <peda@axentia.se> Signed-off-by: Jonathan Cameron <jic23@kernel.org>
2016-02-27iio: convert to common i2c_check_functionality() return valueMatt Ranostay1-1/+1
Previously most drivers that used a i2c_check_functionality() check condition required various error codes on failure. This patchset converts to a standard of -EOPNOTSUPP Signed-off-by: Matt Ranostay <mranostay@gmail.com> Signed-off-by: Jonathan Cameron <jic23@kernel.org>
2015-09-30iio: mcp4531: Driver for Microchip digital potentiometersPeter Rosin1-0/+231
Add support for Microchip digital potentiometers and rheostats MCP4531, MCP4532, MCP4551, MCP4552 MCP4631, MCP4632, MCP4651, MCP4652 DEVICE Wipers Steps Resistor Opts (kOhm) i2c address MCP4531 1 129 5, 10, 50, 100 010111x MCP4532 1 129 5, 10, 50, 100 01011xx MCP4551 1 257 5, 10, 50, 100 010111x MCP4552 1 257 5, 10, 50, 100 01011xx MCP4631 2 129 5, 10, 50, 100 0101xxx MCP4632 2 129 5, 10, 50, 100 01011xx MCP4651 2 257 5, 10, 50, 100 0101xxx MCP4652 2 257 5, 10, 50, 100 01011xx Datasheet: http://www.microchip.com/downloads/en/DeviceDoc/22096b.pdf Signed-off-by: Peter Rosin <peda@axentia.se> Signed-off-by: Jonathan Cameron <jic23@kernel.org>
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