kernel/git/stable/linux.git/drivers/iio/dac, branch linux-4.20.y

iio: dac: ad5686: fix bit shift read register

2019-01-13T08:24:07+00:00

commit 0e76df5c978338f3051e5126fc0c4245c57a307a upstream. This patch solves the register readback issue with the bit shift. When the dac resolution was lower than the register size (ex. 12 bits out of 16 bits) the readback value was not shifted with the difference in bits and the value was higher. Also a mask is applied on the read value in order to get the value relative to the actual bit size. Fixes: 0357e488b8 ("iio:dac:ad5686: Refactor the driver") Signed-off-by: Mircea Caprioru Cc: Signed-off-by: Jonathan Cameron Signed-off-by: Greg Kroah-Hartman

iio: ad5064: Fix regulator handling

2018-09-29T12:28:47+00:00

The correct way to handle errors returned by regualtor_get() and friends is to propagate the error since that means that an regulator was specified, but something went wrong when requesting it. For handling optional regulators, e.g. when the device has an internal vref, regulator_get_optional() should be used to avoid getting the dummy regulator that the regulator core otherwise provides. Signed-off-by: Lars-Peter Clausen Cc: Signed-off-by: Jonathan Cameron

Merge tag 'iio-for-4.20a' of git://git.kernel.org/pub/scm/linux/kernel/git/jic23/iio into staging-next

2018-09-14T08:38:48+00:00

Jonathan writes: 1st round of IIO new device support, features and cleanups in the 4.20 cycle. There is a merge commit in here to pull in regmap support for repeatedly reading the same register (to read out FIFOs). Used by the adxl372 driver. This will find uses elsewhere once we tidy up various drivers that are effectively doing this and relying on not enabling regcache. New device support * Analog devices ADXL372 accelerometer - new driver for this accelerometer including fifo and and interrupt support. Follow up patches enforce trigger validation, add sampling frequency control and filter bandwidth control. A later series added i2c support to the existing SPI support. * ST lsm6dsx - rework and add support fo the LSM6DSO 6 axis mems sensor. * Linear LTC 1660 DAC - new driver supporting the LTC 1660 and LTC 1665 SPI DACs. * Microchip mcp3911 ADC. - new driver for this integrated analog front end and ADC. * Qualcomm SPMI PMIC5 adc driver - using the spmi framework, new driver and bindings for this ADC. Follow up patch adds some missing channels. Features * ad5758 - support hard reset using a gpio (if provided). * mpu6050 - Regulator support * qcom-spmi-adc5 - Sanity check the channel numbers provided by DT to make sure the driver actually knows about them. * sc27xx - give raw data for channel 20 as it's used on all known boards for the headset which needs a custom converstion function. If it turns out someone builds a board where this isn't true we will deal with it when it happens. - add ADC scale calibration. * tsl2772 - support device tree binding to set the proximity led settings. - regulator supprot. - binding for apds9930 - trivial addition as register compatible with tsl2772. Cleanups / Minor fixes * adxl345 - supress a static checker warning but explicitly checking if the id object is null. * bh1750 - avoid CONFIG_PM_SLEEP checks. - SPDX. * bme680 - spelling mistake - use clamp rather than open coding. - white space and other similar fixes. - rename MSK to MASK for clarifty and use GENMASK to specify them. - use the FIELD_GET macro rather than a very odd accessor of dividing by 16 to get the shift. - rework to share handing for oversampling of the various channels in a unified way. - check explicitly for val2 in write_raw function to ensure it is 0. - drop some field defines that don't add anything. * dpot-adc - SPDX * envelope detector - SPDX * isl29501 - fix an ancient compiler warning mostly because it results in much nicer code. * max30102 - mark switch fall throughs. * max44000 - drop an unused variable. * max512 - avoid CONFIG_PM_SLEEP checks. * max5481 - use of_device_get_match_data rather than open coding it. * max5821 - avoid CONFIG_PM_SLEEP checks. * max9611 - explicity cast an enum to an integer to make it totally clear that this is intended. * mcp4018 - fix an inconsistent MODULE_LICENSE. - use of_device_get_match_data rather than open coding it. * mcp4531 - use of_device_get_match_data rather than open coding it. - SPDX * mcp4725 - avoid CONFIG_PM_SLEEP checks. * mcp4922 - Fix error handling and prevent writing a negative to when setting the output voltage. * ms5611 - drop deprecated compatible strings without manufacturer from being explicitly listed. They are handled anyway. - SPDX * multiplexer - SPDX * qcom-vadc - fix inconsistent documentation for reg. * ti-dac5571 - provide and of_match_table. * treewide - update Michael Hennerich's email address. - Use %pOFn rather than device_node.name. * documentation. - tidy up a wrong kernel version for the introduction of the position_relative ABI.

iio: dac: ad5758: Add support for hard reset

2018-09-02T18:01:30+00:00

The ad5758 has a hardware reset active low input pin. This patch adds a devicetree entry for a reset GPIO and a new ad5758_reset() function. During initialization, it is checked if the reset property is specified and the the GPIO is being asserted, therefore the device will become active. When the reset function is called, if the gpio_reset var is set, then the GPIO will be toggled, otherwise a software reset is performed. Signed-off-by: Stefan Popa Signed-off-by: Jonathan Cameron

iio: dac: ti-dac5571: provide of_match_table to driver

2018-08-25T08:58:52+00:00

Use the created list of of_device_id's as a match table. Signed-off-by: Marcus Folkesson Signed-off-by: Jonathan Cameron

iio: dac: mcp4922: fix error handling in mcp4922_write_raw

2018-08-25T08:47:36+00:00

Do not try to write negative values and make sure that the write goes well. Signed-off-by: Marcus Folkesson Signed-off-by: Jonathan Cameron

iio: dac: add support for ltc1660

2018-08-25T08:24:07+00:00

LTC1665/LTC1660 is a 8/10-bit Digital-to-Analog Converter (DAC) with eight individual channels. Signed-off-by: Marcus Folkesson Signed-off-by: Jonathan Cameron

treewide: convert ISO_8859-1 text comments to utf-8

2018-08-24T01:48:43+00:00

Almost all files in the kernel are either plain text or UTF-8 encoded. A couple however are ISO_8859-1, usually just a few characters in a C comments, for historic reasons. This converts them all to UTF-8 for consistency. Link: http://lkml.kernel.org/r/20180724111600.4158975-1-arnd@arndb.de Signed-off-by: Arnd Bergmann Acked-by: Simon Horman [IPVS portion] Acked-by: Jonathan Cameron [IIO] Acked-by: Michael Ellerman [powerpc] Acked-by: Rob Herring Cc: Joe Perches Cc: Arnd Bergmann Cc: Samuel Ortiz Cc: "David S. Miller" Cc: Rob Herring Signed-off-by: Andrew Morton Signed-off-by: Linus Torvalds

iio: dpot-dac: switch to SPDX license identifier

2018-08-20T18:27:47+00:00

Drop the boilerplate license text. Signed-off-by: Peter Rosin Signed-off-by: Jonathan Cameron

iio: dac: mcp4725: avoid using CONFIG_PM_SLEEP

2018-08-19T16:42:21+00:00

This is already handled by SIMPLE_DEV_PM_OPS(). Signed-off-by: Marcus Folkesson Signed-off-by: Jonathan Cameron