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* iio:dac:ti-dac7612: Add driver for Texas Instruments DAC7612Ricardo Ribalda Delgado2019-02-093-0/+195
| | | | | | | | | | | It is a driver for Texas Instruments Dual, 12-Bit Serial Input Digital-to-Analog Converter. Datasheet of this chip: http://www.ti.com/lit/ds/sbas106/sbas106.pdf Signed-off-by: Ricardo Ribalda Delgado <ricardo@ribalda.com> Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
* drivers: iio: dac: Fix wrong license for ADI driversStefan Popa2019-02-095-5/+5
| | | | | | | | Analog Devices drivers are typically GPL v2 only. This patch fixes the inconsistencies between the module license and SPDX. Signed-off-by: Stefan Popa <stefan.popa@analog.com> Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
* iio: dac: ad5686: Add support for AD5674R/AD5679RMircea Caprioru2019-01-124-7/+50
| | | | | | | | | | | | The AD5674R/AD5679R are low power, 16-channel, 12-/16-bit buffered voltage output digital-to-analog converters (DACs). They include a 2.5 V internal reference (enabled by default). These devices are very similar to AD5684R/AD5686R, except that they have 16 channels. Signed-off-by: Mircea Caprioru <mircea.caprioru@analog.com> Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
* iio: dac: ad5686: fix bit shift read registerMircea Caprioru2018-12-081-1/+2
| | | | | | | | | | | | | 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 <mircea.caprioru@analog.com> Cc: <Stable@vger.kernel.org> Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
* iio:dac:ad5686: Add AD5310R supportStefan Popa2018-12-083-3/+41
| | | | | | | | | | | | | | | | | | | | | | | The AD5310R is a single channel DAC with 10-bit precision, which is part of the same family as AD5311R, except that it uses the spi interface instead of i2c. The device has a built-in 2.5V reference which is enabled by default. Another important difference is that the SPI write command operation is 16 bits long. The first four bits represent the command, while the remaining 12 bits are for data. In the control reg, DB9 and DB10 are used for power-down modes, while DB8 is the REF bit. In order to accommodate this change, a new regmap type was defined and checked accordingly. Because AD5310R does not have a readback register, the read_raw operation will return "Operation is not supported". Datasheet: Link: http://www.analog.com/media/en/technical-documentation/data-sheets/AD5310R_5311R.pdf Signed-off-by: Stefan Popa <stefan.popa@analog.com> Signed-off-by: Mircea Caprioru <mircea.caprioru@analog.com> Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
* iio:dac:ti-dac7311 Add driver for Texas Instrument DAC7311Charles-Antoine Couret2018-11-113-0/+348
| | | | | | | | | | | It is a driver for Texas Instruments 8/10/12-bit 1-channel compatible with DAC6311 and DAC5311 chips. Datasheet of this chip: http://www.ti.com/lit/ds/symlink/dac7311.pdf Signed-off-by: Charles-Antoine Couret <charles-antoine.couret@essensium.com> Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
* iio: dpot-dac: mark expected switch fall-through with text GCC expects.Gustavo A. R. Silva2018-10-141-2/+2
| | | | | | | | | | | | | | | | | In preparation to enabling -Wimplicit-fallthrough, mark switch cases where we are expecting to fall through. Notice that in this particular case, I replaced "...and fall through." with the specific string "fall through", which is what GCC is expecting to find thus supressing this false positive. As Peter has observed this breaks the nice English flow, which is less than ideal, but short of teaching GCC to read English, there isn't a lot that we can do about it. Addresses-Coverity-ID: 1462408 ("Missing break in switch") Signed-off-by: Gustavo A. R. Silva <gustavo@embeddedor.com> Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
* iio: ad5064: Fix regulator handlingLars-Peter Clausen2018-09-291-15/+38
| | | | | | | | | | | | | | 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 <lars@metafoo.de> Cc: <Stable@vger.kernel.org> Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
* Merge tag 'iio-for-4.20a' of ↵Greg Kroah-Hartman2018-09-1414-38/+308
|\ | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | git://git.kernel.org/pub/scm/linux/kernel/git/jic23/iio into staging-next 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 resetStefan Popa2018-09-021-2/+24
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | 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 <stefan.popa@analog.com> Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
| * iio: dac: ti-dac5571: provide of_match_table to driverMarcus Folkesson2018-08-251-0/+1
| | | | | | | | | | | | | | Use the created list of of_device_id's as a match table. Signed-off-by: Marcus Folkesson <marcus.folkesson@gmail.com> Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
| * iio: dac: mcp4922: fix error handling in mcp4922_write_rawMarcus Folkesson2018-08-251-3/+8
| | | | | | | | | | | | | | Do not try to write negative values and make sure that the write goes well. Signed-off-by: Marcus Folkesson <marcus.folkesson@gmail.com> Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
| * iio: dac: add support for ltc1660Marcus Folkesson2018-08-253-0/+261
| | | | | | | | | | | | | | | | LTC1665/LTC1660 is a 8/10-bit Digital-to-Analog Converter (DAC) with eight individual channels. Signed-off-by: Marcus Folkesson <marcus.folkesson@gmail.com> Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
| * iio: dpot-dac: switch to SPDX license identifierPeter Rosin2018-08-201-4/+1
| | | | | | | | | | | | | | Drop the boilerplate license text. Signed-off-by: Peter Rosin <peda@axentia.se> Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
| * iio: dac: mcp4725: avoid using CONFIG_PM_SLEEPMarcus Folkesson2018-08-191-9/+3
| | | | | | | | | | | | | | This is already handled by SIMPLE_DEV_PM_OPS(). Signed-off-by: Marcus Folkesson <marcus.folkesson@gmail.com> Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
| * iio: dac: max5821: avoid using CONFIG_PM_SLEEPMarcus Folkesson2018-08-191-8/+3
| | | | | | | | | | | | | | This is already handled by SIMPLE_DEV_PM_OPS(). Signed-off-by: Marcus Folkesson <marcus.folkesson@gmail.com> Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
| * iio: dac: max517: avoid using CONFIG_PM_SLEEPMarcus Folkesson2018-08-191-8/+3
| | | | | | | | | | | | | | This is already handled by SIMPLE_DEV_PM_OPS(). Signed-off-by: Marcus Folkesson <marcus.folkesson@gmail.com> Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
| * drivers: iio: Update MODULE AUTHOR email addressMichael Hennerich2018-08-194-4/+4
| | | | | | | | | | | | | | no functional changes Signed-off-by: Michael Hennerich <michael.hennerich@analog.com> Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
* | treewide: convert ISO_8859-1 text comments to utf-8Arnd Bergmann2018-08-241-1/+1
|/ | | | | | | | | | | | | | | | | | | | | | 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 <arnd@arndb.de> Acked-by: Simon Horman <horms@verge.net.au> [IPVS portion] Acked-by: Jonathan Cameron <Jonathan.Cameron@huawei.com> [IIO] Acked-by: Michael Ellerman <mpe@ellerman.id.au> [powerpc] Acked-by: Rob Herring <robh@kernel.org> Cc: Joe Perches <joe@perches.com> Cc: Arnd Bergmann <arnd@arndb.de> Cc: Samuel Ortiz <sameo@linux.intel.com> Cc: "David S. Miller" <davem@davemloft.net> Cc: Rob Herring <robh+dt@kernel.org> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
* iio: dac: Add AD5758 supportStefan Popa2018-07-073-0/+908
| | | | | | | | | | | | | | The AD5758 is a single channel DAC with 16-bit precision which uses the SPI interface that operates at clock rates up to 50MHz. The output can be configured as voltage or current and is available on a single terminal. Datasheet: http://www.analog.com/media/en/technical-documentation/data-sheets/ad5758.pdf Signed-off-by: Stefan Popa <stefan.popa@analog.com> Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
* iio: dac: ltc2632 remove redundant pointer chip_info and spi_dev_idColin Ian King2018-07-071-5/+0
| | | | | | | | | | | Pointers chip_info and spi_dev_id are being assigned but are never used hence they are redundant and can be removed. Cleans up clang warning: warning: variable 'chip_info' set but not used [-Wunused-but-set-variable] Signed-off-by: Colin Ian King <colin.king@canonical.com> Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
* iio: dac: ti-dac5571 remove redundant variable 'shift'Colin Ian King2018-07-071-6/+0
| | | | | | | | | | | | Variable shift is being assigned but is never used hence it is redundant and can be removed. Cleans up two clang warnings: warning: variable ‘shift’ set but not used [-Wunused-but-set-variable] Signed-off-by: Colin Ian King <colin.king@canonical.com> Reviewed-by: Sean Nyekjaer <sean.nyekjaer@prevas.dk> Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
* Merge tag 'iio-for-4.19a' of ↵Greg Kroah-Hartman2018-06-263-0/+9
|\ | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | git://git.kernel.org/pub/scm/linux/kernel/git/jic23/iio into staging-next Jonathan writes: First set of IIO new device support, features and cleanups in the 4.19 cycle The usual mixed bunch. Particular good to see is the generic touch screen driver. Will be interesting to see if this works for other ADCs without major changes. Core features * Channel types - New position relative channel type primarily for touch screen sensors to feed the generic touchscreen driver. New device support * ad5586 - Add support for the AD5311R DAC. * Generic touch screen driver as an IIO consumer. - Note this is in input, but due to dependencies is coming through the IIO tree. - Specific support for this added to the at91-sama5d2 ADC. - Various necessary DT bindings added. Staging Drops * ADIS16060 gyro - A device with a very odd interface that was never cleanly supported. It's now very difficult to get, so unlikely it'll ever be fixed up. Cleanups and minor features and fixes * core - Fix y2038 timestamp issues now the core support is in place. * 104-quad-8 - Provide some defines for magic numbers to help readability. - Fix an off by one error in register selection * ad7606 - Put in a missing function parameter name in a prototype. * adis16023 - Use generic sign_extend function rather than local version. * adis16240 - Use generic sign_extend funciton rather than local version. * at91-sama5d2 - Drop dependency on HAS_DMA now this is handled elsewhere. Will improve build test coverage. - Add oversampling ratio control. Note there is a minor ABI change here to increase the apparent depth to 14 bits so as to allow for transparent provision of different oversampling ratios that drop the actual bit depth to 13 or 12 bits. * hx711 - Add a MAINTAINERS entry for this device. * inv_mpu6050 - Replace the timestamp fifo 'special' code with generic timestamp handling. - Switch to using local store of timestamp divider rather than rate as that is more helpful for accurate time measurement. - Fix an unaligned access that didn't seem to be causing any trouble. - Use the fifo overflow bit to track the overflow status rather than a software counter. - New timestamping mechanism to deal with missed sample interrupts. * stm32-adc - Drop HAS_DMA build dependency. * sun4i-gpadc - Select REGMAP_IRQ a very rarely hit build issue fix.
| * iio:dac:ad5686: Add AD5311R supportStefan Popa2018-06-103-0/+9
| | | | | | | | | | | | | | | | | | | | | | | | | | | | AD5311R is a single channel DAC with 10-bit precision and i2c interface. The device includes a 2.5V internal reference which is enabled by default. This device is similar to AD5691R/AD5692R/AD5693/AD5693R, the only difference is that it has 10-bit precision. Datasheet: http://www.analog.com/media/en/technical-documentation/data-sheets/AD5310R_5311R.pdf Signed-off-by: Stefan Popa <stefan.popa@analog.com> Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
* | treewide: devm_kzalloc() -> devm_kcalloc()Kees Cook2018-06-131-2/+3
|/ | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | The devm_kzalloc() function has a 2-factor argument form, devm_kcalloc(). This patch replaces cases of: devm_kzalloc(handle, a * b, gfp) with: devm_kcalloc(handle, a * b, gfp) as well as handling cases of: devm_kzalloc(handle, a * b * c, gfp) with: devm_kzalloc(handle, array3_size(a, b, c), gfp) as it's slightly less ugly than: devm_kcalloc(handle, array_size(a, b), c, gfp) This does, however, attempt to ignore constant size factors like: devm_kzalloc(handle, 4 * 1024, gfp) though any constants defined via macros get caught up in the conversion. Any factors with a sizeof() of "unsigned char", "char", and "u8" were dropped, since they're redundant. Some manual whitespace fixes were needed in this patch, as Coccinelle really liked to write "=devm_kcalloc..." instead of "= devm_kcalloc...". The Coccinelle script used for this was: // Fix redundant parens around sizeof(). @@ expression HANDLE; type TYPE; expression THING, E; @@ ( devm_kzalloc(HANDLE, - (sizeof(TYPE)) * E + sizeof(TYPE) * E , ...) | devm_kzalloc(HANDLE, - (sizeof(THING)) * E + sizeof(THING) * E , ...) ) // Drop single-byte sizes and redundant parens. @@ expression HANDLE; expression COUNT; typedef u8; typedef __u8; @@ ( devm_kzalloc(HANDLE, - sizeof(u8) * (COUNT) + COUNT , ...) | devm_kzalloc(HANDLE, - sizeof(__u8) * (COUNT) + COUNT , ...) | devm_kzalloc(HANDLE, - sizeof(char) * (COUNT) + COUNT , ...) | devm_kzalloc(HANDLE, - sizeof(unsigned char) * (COUNT) + COUNT , ...) | devm_kzalloc(HANDLE, - sizeof(u8) * COUNT + COUNT , ...) | devm_kzalloc(HANDLE, - sizeof(__u8) * COUNT + COUNT , ...) | devm_kzalloc(HANDLE, - sizeof(char) * COUNT + COUNT , ...) | devm_kzalloc(HANDLE, - sizeof(unsigned char) * COUNT + COUNT , ...) ) // 2-factor product with sizeof(type/expression) and identifier or constant. @@ expression HANDLE; type TYPE; expression THING; identifier COUNT_ID; constant COUNT_CONST; @@ ( - devm_kzalloc + devm_kcalloc (HANDLE, - sizeof(TYPE) * (COUNT_ID) + COUNT_ID, sizeof(TYPE) , ...) | - devm_kzalloc + devm_kcalloc (HANDLE, - sizeof(TYPE) * COUNT_ID + COUNT_ID, sizeof(TYPE) , ...) | - devm_kzalloc + devm_kcalloc (HANDLE, - sizeof(TYPE) * (COUNT_CONST) + COUNT_CONST, sizeof(TYPE) , ...) | - devm_kzalloc + devm_kcalloc (HANDLE, - sizeof(TYPE) * COUNT_CONST + COUNT_CONST, sizeof(TYPE) , ...) | - devm_kzalloc + devm_kcalloc (HANDLE, - sizeof(THING) * (COUNT_ID) + COUNT_ID, sizeof(THING) , ...) | - devm_kzalloc + devm_kcalloc (HANDLE, - sizeof(THING) * COUNT_ID + COUNT_ID, sizeof(THING) , ...) | - devm_kzalloc + devm_kcalloc (HANDLE, - sizeof(THING) * (COUNT_CONST) + COUNT_CONST, sizeof(THING) , ...) | - devm_kzalloc + devm_kcalloc (HANDLE, - sizeof(THING) * COUNT_CONST + COUNT_CONST, sizeof(THING) , ...) ) // 2-factor product, only identifiers. @@ expression HANDLE; identifier SIZE, COUNT; @@ - devm_kzalloc + devm_kcalloc (HANDLE, - SIZE * COUNT + COUNT, SIZE , ...) // 3-factor product with 1 sizeof(type) or sizeof(expression), with // redundant parens removed. @@ expression HANDLE; expression THING; identifier STRIDE, COUNT; type TYPE; @@ ( devm_kzalloc(HANDLE, - sizeof(TYPE) * (COUNT) * (STRIDE) + array3_size(COUNT, STRIDE, sizeof(TYPE)) , ...) | devm_kzalloc(HANDLE, - sizeof(TYPE) * (COUNT) * STRIDE + array3_size(COUNT, STRIDE, sizeof(TYPE)) , ...) | devm_kzalloc(HANDLE, - sizeof(TYPE) * COUNT * (STRIDE) + array3_size(COUNT, STRIDE, sizeof(TYPE)) , ...) | devm_kzalloc(HANDLE, - sizeof(TYPE) * COUNT * STRIDE + array3_size(COUNT, STRIDE, sizeof(TYPE)) , ...) | devm_kzalloc(HANDLE, - sizeof(THING) * (COUNT) * (STRIDE) + array3_size(COUNT, STRIDE, sizeof(THING)) , ...) | devm_kzalloc(HANDLE, - sizeof(THING) * (COUNT) * STRIDE + array3_size(COUNT, STRIDE, sizeof(THING)) , ...) | devm_kzalloc(HANDLE, - sizeof(THING) * COUNT * (STRIDE) + array3_size(COUNT, STRIDE, sizeof(THING)) , ...) | devm_kzalloc(HANDLE, - sizeof(THING) * COUNT * STRIDE + array3_size(COUNT, STRIDE, sizeof(THING)) , ...) ) // 3-factor product with 2 sizeof(variable), with redundant parens removed. @@ expression HANDLE; expression THING1, THING2; identifier COUNT; type TYPE1, TYPE2; @@ ( devm_kzalloc(HANDLE, - sizeof(TYPE1) * sizeof(TYPE2) * COUNT + array3_size(COUNT, sizeof(TYPE1), sizeof(TYPE2)) , ...) | devm_kzalloc(HANDLE, - sizeof(TYPE1) * sizeof(THING2) * (COUNT) + array3_size(COUNT, sizeof(TYPE1), sizeof(TYPE2)) , ...) | devm_kzalloc(HANDLE, - sizeof(THING1) * sizeof(THING2) * COUNT + array3_size(COUNT, sizeof(THING1), sizeof(THING2)) , ...) | devm_kzalloc(HANDLE, - sizeof(THING1) * sizeof(THING2) * (COUNT) + array3_size(COUNT, sizeof(THING1), sizeof(THING2)) , ...) | devm_kzalloc(HANDLE, - sizeof(TYPE1) * sizeof(THING2) * COUNT + array3_size(COUNT, sizeof(TYPE1), sizeof(THING2)) , ...) | devm_kzalloc(HANDLE, - sizeof(TYPE1) * sizeof(THING2) * (COUNT) + array3_size(COUNT, sizeof(TYPE1), sizeof(THING2)) , ...) ) // 3-factor product, only identifiers, with redundant parens removed. @@ expression HANDLE; identifier STRIDE, SIZE, COUNT; @@ ( devm_kzalloc(HANDLE, - (COUNT) * STRIDE * SIZE + array3_size(COUNT, STRIDE, SIZE) , ...) | devm_kzalloc(HANDLE, - COUNT * (STRIDE) * SIZE + array3_size(COUNT, STRIDE, SIZE) , ...) | devm_kzalloc(HANDLE, - COUNT * STRIDE * (SIZE) + array3_size(COUNT, STRIDE, SIZE) , ...) | devm_kzalloc(HANDLE, - (COUNT) * (STRIDE) * SIZE + array3_size(COUNT, STRIDE, SIZE) , ...) | devm_kzalloc(HANDLE, - COUNT * (STRIDE) * (SIZE) + array3_size(COUNT, STRIDE, SIZE) , ...) | devm_kzalloc(HANDLE, - (COUNT) * STRIDE * (SIZE) + array3_size(COUNT, STRIDE, SIZE) , ...) | devm_kzalloc(HANDLE, - (COUNT) * (STRIDE) * (SIZE) + array3_size(COUNT, STRIDE, SIZE) , ...) | devm_kzalloc(HANDLE, - COUNT * STRIDE * SIZE + array3_size(COUNT, STRIDE, SIZE) , ...) ) // Any remaining multi-factor products, first at least 3-factor products, // when they're not all constants... @@ expression HANDLE; expression E1, E2, E3; constant C1, C2, C3; @@ ( devm_kzalloc(HANDLE, C1 * C2 * C3, ...) | devm_kzalloc(HANDLE, - (E1) * E2 * E3 + array3_size(E1, E2, E3) , ...) | devm_kzalloc(HANDLE, - (E1) * (E2) * E3 + array3_size(E1, E2, E3) , ...) | devm_kzalloc(HANDLE, - (E1) * (E2) * (E3) + array3_size(E1, E2, E3) , ...) | devm_kzalloc(HANDLE, - E1 * E2 * E3 + array3_size(E1, E2, E3) , ...) ) // And then all remaining 2 factors products when they're not all constants, // keeping sizeof() as the second factor argument. @@ expression HANDLE; expression THING, E1, E2; type TYPE; constant C1, C2, C3; @@ ( devm_kzalloc(HANDLE, sizeof(THING) * C2, ...) | devm_kzalloc(HANDLE, sizeof(TYPE) * C2, ...) | devm_kzalloc(HANDLE, C1 * C2 * C3, ...) | devm_kzalloc(HANDLE, C1 * C2, ...) | - devm_kzalloc + devm_kcalloc (HANDLE, - sizeof(TYPE) * (E2) + E2, sizeof(TYPE) , ...) | - devm_kzalloc + devm_kcalloc (HANDLE, - sizeof(TYPE) * E2 + E2, sizeof(TYPE) , ...) | - devm_kzalloc + devm_kcalloc (HANDLE, - sizeof(THING) * (E2) + E2, sizeof(THING) , ...) | - devm_kzalloc + devm_kcalloc (HANDLE, - sizeof(THING) * E2 + E2, sizeof(THING) , ...) | - devm_kzalloc + devm_kcalloc (HANDLE, - (E1) * E2 + E1, E2 , ...) | - devm_kzalloc + devm_kcalloc (HANDLE, - (E1) * (E2) + E1, E2 , ...) | - devm_kzalloc + devm_kcalloc (HANDLE, - E1 * E2 + E1, E2 , ...) ) Signed-off-by: Kees Cook <keescook@chromium.org>
* iio: dac: Add support for external reference voltage through the regulator ↵Silvan Murer2018-05-221-9/+61
| | | | | | | | framework. Signed-off-by: Silvan Murer <silvan.murer@gmail.com> Reviewed-by: Lars-Peter Clausen <lars@metafoo.de> Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
* iio: dac: fix missing of_match_table assignment in the LTC 2632 deviceSilvan Murer2018-05-221-9/+10
| | | | | | Signed-off-by: Silvan Murer <silvan.murer@gmail.com> Reviewed-by: Lars-Peter Clausen <lars@metafoo.de> Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
* iio:dac:ad5686: Add AD5681R/AD5682R/AD5683/AD5683R supportStefan Popa2018-05-203-8/+74
| | | | | | | | | | | | | | | | | | | | | | | | | | The AD5681R/AD5682R/AD5683/AD5683R are a family of one channel DACs with 12-bit, 14-bit and 16-bit precision respectively. The devices have either no built-in reference, or built-in 2.5V reference. These devices are similar to AD5691R/AD5692R/AD5693/AD5693R except with a few notable differences: * they use the SPI interface instead of I2C * in the write control register, DB18 and DB17 are used for setting the power mode, while DB16 is the REF bit. This is why a new regmap type was defined and checked accordingly. * the shift register is 24 bits wide, the first four bits are the command bits followed by the data bits. As the data comprises of 20-bit, 18-bit or 16-bit input code, this means that 4 LSB bits are don't care. This is why the data needs to be shifted on the left with four bits. Therefore, AD5683_REGMAP is checked inside a switch case in the ad5686_spi_write() function. On the other hand, similar devices such as AD5693R family, have the 4 MSB command bits followed by 4 don't care bits. Datasheet: http://www.analog.com/media/en/technical-documentation/data-sheets/AD5683R_5682R_5681R_5683.pdf Signed-off-by: Stefan Popa <stefan.popa@analog.com> Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
* iio:dac:ad5686: Add AD5691R/AD5692R/AD5693/AD5693R supportStefan Popa2018-05-203-7/+109
| | | | | | | | | | | | | | | | | | The AD5691R/AD5692R/AD5693/AD5693R are a family of one channel DACs with 12-bit, 14-bit and 16-bit precision respectively. The devices have either no built-in reference, or built-in 2.5V reference. These devices are pretty similar to AD5671R/AD5675R and AD5694/AD5694R/AD5695R/AD5696/AD5696R, except that they have one channel. Another difference is that they use a write control register(addr 0x04) for setting the power down modes and the internal reference instead of separate registers for each function. Datasheet: http://www.analog.com/media/en/technical-documentation/data-sheets/AD5693R_5692R_5691R_5693.pdf Signed-off-by: Stefan Popa <stefan.popa@analog.com> Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
* Merge tag 'iio-for-4.18a' of ↵Greg Kroah-Hartman2018-05-117-185/+912
|\ | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | git://git.kernel.org/pub/scm/linux/kernel/git/jic23/iio into staging-next Jonathan writes: 1st round of IIO new device support, features and cleanup for the 4.18 cycle A nice mix this time of excellent cleanups (many to send drivers speeding toward staging graduations) and new drivers / device support. A good part of this is Brian Masney's never ending task on the tsl2x7x driver. The end is in sight so hopefully we'll get that one out of staging very soon! New device support * AD5686 - Support AD5685R (was wrongly present as AD5685) - Support AD5672R, AD5676, AD5676, AD5684R and AD5686R 4 and 8 channel SPI DACs with various precisions. - Support AD5671R, AD5675R, AD5694, AD5694R, AD5695R, AD5696 and AD5696R I2C DACs with various percisions and numbers of channels. * Analog front end rescale driver - New driver. - Support current sensing usings a shunt resistor. - Support simple voltage dividers. - support simple current sense amplifiers. * TI dac5571 - New driver and device bindings supporting: dac5571, dac6571, dac7571, dac5574, dac6574, dac7574, dac5573, dac6573 and dac7573 * Meson-adc - Support for Meson AXG with DT bindings. * mpu6050 - Support the mpu9255 which only requires additional WHOAMI entry and compatible string. * st_lsm6dsx - Support for lsm330dlc combinded accelerometer and gyro sensors with DT bindings. * stm32_adc - Add support for STM32MP1 with bindings. Staging graduations * adis16201 after some excelent cleanup by Himanshu Jha. * adis16029 after some excelent cleanup by Shreeya Patel. New features: * ABI docs - Add core ABI docs for angle channels. * inv_mpu6050 - Provide support for the full range of interrupts the device supports. * st_accel - Add SMO8840 ACPI ID seen in the wild on some Lenovo machines. * stx104 - Provide a multiple gpio get function. Cleanups / Minor fixes * core - Use new nested structure support to improve kernel-doc. * ad2s1200 - Use be16_to_cpup instead of opencoding. * ad5686 - Indentation tidy up. - Switch to SPDX - Refactor to allow various numbers of channels. - Refactor to separate core and SPI specific support, prior to addition of i2c equivalent devices. * ad7606 - Use drvdata directly from device rather than boucing via the platform_device structure. * ad7746 - Replace opencoded byte swapped i2c calls with _swapped variants. - White space and line break readability improvements. - Reorder includes and variable declarations where appropriate. * ad7791 - Changes to the AD ADC library used by this driver took in the sampling frequency. This lead to be the wrong path being the one tied to the resulting attribute, so it didn't work, and a warning to be printed. * ad7780 - Remove apparent support for sampling frequency control on devices that don't support changing the sampling attributes. * ade7854 - Fix a read of the wrong number of bits. - Improve error handling on i2c read/write errors. - Rework i2c and spi code to reduce duplication. * adis16201 (staging) - Improve meaning inherent in some macro names by adding units etc where relevant. - Adjust comments to improve detail and drop the irrelevant. - Rename register address definitions definitions to add a _REG postfix, clearly separating them from field definitions. Reorganize the definitions to group register address and fields. - Use sign_extend32 rather than open coding. - Reverse Xmas tree ordering where appropriate and align function args. - Remove unused headers. - Use GENMASK where appropriate instead of open coding. * adis16209 (staging) - Indent field definitions to visually separate them from register address definitions. - Use reverse xmas tree ordering where appropriate. - Add some whitespace where it will help readability. - Drop some unused headers. - Use GENMASK where appropriate. * ad2s1200 - Drop unnecessary includes and reorder alphabetically. - Reverse xmas tree and blank line cleanups. * atlas-ph-sensor - Use msleep instead of usleep_range where the precise value doesn't matter and the delays are long. * bcm150 - Drop transaction splitting as core now handles it. * cros_ec - Move the shared header to the include/iio/common directory. This brings it inline with the other multiple type devices. - Use drvdata directly from device rather than boucing via the platform_device structure. * hid-sensors - Use drvdata directly from device rather than boucing via the platform_device structure. * inv_mpu6050 - Clear out a second function definition for the same function. - Don't flush fifo when the iio buffer is full but just drop excess data. - Tidy up set_power_itg and ensure it is used in the right places. - Use set_power_itg rather than opencoding it again in the i2c mux control. - Make sure error paths disable the power if undoing power on. - Used managed devm_ functions during probe. Delete remove function. - Refactor to pull raw data read out of read_raw function. - Simplify data reading error paths. - Only enable the i2c mux for chips with the i2c aux bus (not icm20608) - Fix a potential deadlock due to varying lock ordering. - Fix an issue where first sample from gyro after enabling is unstable by dropping the first sample. - Fix an issue where the user_ctrl register is incorrectly overwritten. - Tidy up some grammar and spelling minor issus. * mcp320x - Use vendor compatible strings. * mcp4018 - Switch to using i2c .probe_new. * mcp4351 - switch to using i2c .probe_new. * meson-adc - rework handing on common ADC platform data so it can be shared across multiple families of SoCs. * sca3000 - Fix an error handling path if the ring configure fails. * st_lsm6dsx - Fix a wrong fifo threshold mask (no actual effect) * stm32-dfsdm - Style fixes and cleanups. - Check filter ID is in range and check spi-max-frequency. * tsl2x7x (staging) - Drop some unnecessary function calls, unused variables and unnecessary local variables. - Fix wrong interrupt type. - Avoid unnecessary double clear of interrupt. - Simplify proximity calibration call which did various things unrelated to actually calibrating. - Separate control of the proximity and ALS interrupts. - Improve consistency of logging. - Separate ALS and proximity persistence settings as they have separate hardware controls. - Tidy up variable ordering. - Add Brian to copyright notice given consider work on this driver. - Take advantage of hardware support for I2C address auto increment. - Combine individuaal enable and period attributes for the two directions on the threshold events into a single value as the hardware doesn't separate them. - Move integration_time* attributes from light channel to intensity value as they effect the intensity readings directly and the light reading only indirectly. Hence this better reflects reality. Also move the calibscale_available. - Avoid returning an error in the IRQ handler. - Hard code the reg value in _clear_interrupts as it only takes one value in the code. Result is the function has little purpose so opencode the two remaining i2c_smbus_write_byte calls. - Drop some unnecessary checking of the chip status register. - Tidy up return path in _write_interrupt_config. - Tidy up the ID verification code. - Move the power and diode settings defines into the header as these are needed for platform data configuration. - Various renames and comment cleanups for consistency and clarity. - Use actual device defaults for default startup settings. - SPDX - Add some range sanity checking to sysfs attribute writes. - Don't provide event interfaces if the interrupt line isn't available. - Use IIO_CONST_ATTR macro for calibscale_available as it's a constant string. - Fix the integration time and lux equations. - Make device IDs explicit index values in the device_channel_config array.
| * iio: dac: add TI DAC5571 family supportSean Nyekjaer2018-05-063-0/+450
| | | | | | | | | | | | | | This patch adds support for the Texas Intruments DAC5571 Family. Signed-off-by: Sean Nyekjaer <sean.nyekjaer@prevas.dk> Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
| * iio:dac:ad5686: Add AD5671R/75R/94/94R/95R/96/96R supportStefan Popa2018-04-155-0/+143
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | The AD5694/AD5694R/AD5695R/AD5696/AD5696R are a family of 4 channel DACs with 12-bit, 14-bit and 16-bit precision respectively. The devices have either no built-in reference, or built-in 2.5V reference. The AD5671R/AD5675R are similar, except that they have 8 instead of 4 channels. These devices are similar to AD5672R/AD5676/AD5676R and AD5684/AD5684R/AD5684/AD5685R/AD5686/AD5686R, except that they use i2c instead of spi. Datasheets: http://www.analog.com/media/en/technical-documentation/data-sheets/AD5671R_5675R.pdf http://www.analog.com/media/en/technical-documentation/data-sheets/AD5696R_5695R_5694R.pdf Signed-off-by: Stefan Popa <stefan.popa@analog.com> Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
| * iio:dac:ad5686: Refactor the driverStefan Popa2018-04-155-166/+246
| | | | | | | | | | | | | | | | | | | | | | | | | | In this patch restructures the existing ad5686 driver by adding a module for SPI and a header file, while the baseline module deals with the chip-logic. This is a necessary step, as this driver should support in the future similar devices which differ only in the type of interface used (I2C instead of SPI). Signed-off-by: Stefan Popa <stefan.popa@analog.com> Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
| * iio:dac:ad5686: Add AD5672R/76/76R/84R/86R supportStefan Popa2018-04-151-0/+46
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | The AD5684R/AD5686R are a family of 4 channel DACs with 12-bit, 14-bit and 16-bit precision respectively. The devices come either with a built-in reference or no built-in reference. The AD5672R/AD5676/AD5676R are similar, except that they have 8 channels instead of 4. Datasheets: http://www.analog.com/media/en/technical-documentation/data-sheets/AD5672R_5676R.pdf http://www.analog.com/media/en/technical-documentation/data-sheets/AD5686R_5685R_5684R.pdf Signed-off-by: Stefan Popa <stefan.popa@analog.com> Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
| * iio:dac:ad5686: Add support for AD5685RStefan Popa2018-04-151-3/+4
| | | | | | | | | | | | | | | | | | | | | | | | This driver acctually supports the AD5685R device and NOT the AD5685, which does not exist. Maintain old id entry in case we have devicetrees out there which are using the wrong name. More information can be found in the datasheet: http://www.analog.com/media/en/technical-documentation/data-sheets/AD5686_5684.pdf Signed-off-by: Stefan Popa <stefan.popa@analog.com> Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
| * iio:dac:ad5686: Add support for various number of channelsStefan Popa2018-04-151-20/+25
| | | | | | | | | | | | | | | | | | | | This patch adds a new num_channels attribute as part of the ad5686_chip_info struct which replaces the AD5686_DAC_CHANNELS define. This is a necessary step, since this driver should support similar devices which differ only in the number of channels. Signed-off-by: Stefan Popa <stefan.popa@analog.com> Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
| * iio:dac:ad5686: Change license descriptionStefan Popa2018-04-151-2/+1
| | | | | | | | | | | | | | | | Add GPLv2+ SPDX identifier and remove license notice to keep the whole purpose of using an SPDx id. Signed-off-by: Stefan Popa <stefan.popa@analog.com> Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
| * iio:dac:ad5686: Style fixes no functional changesStefan Popa2018-04-151-11/+14
| | | | | | | | | | | | | | | | This patch fixes some indentation issues and does not modify the functionality of the driver. Signed-off-by: Stefan Popa <stefan.popa@analog.com> Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
* | Merge tag 'gpio-v4.17-1' of ↵Linus Torvalds2018-04-051-1/+2
|\ \ | |/ |/| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | git://git.kernel.org/pub/scm/linux/kernel/git/linusw/linux-gpio Pull GPIO updates from Linus Walleij: "This is the bulk of GPIO changes for the v4.17 kernel cycle: New drivers: - Nintendo Wii GameCube GPIO, known as "Hollywood" - Raspberry Pi mailbox service GPIO expander - Spreadtrum main SC9860 SoC and IEC GPIO controllers. Improvements: - Implemented .get_multiple() callback for most of the high-performance industrial GPIO cards for the ISA bus. - ISA GPIO drivers now select the ISA_BUS_API instead of depending on it. This is merged with the same pattern for all the ISA drivers and some other Kconfig cleanups related to this. Cleanup: - Delete the TZ1090 GPIO drivers following the deletion of this SoC from the ARM tree. - Move the documentation over to driver-api to conform with the rest of the kernel documentation build. - Continue to make the GPIO drivers include only <linux/gpio/driver.h> and not the too broad <linux/gpio.h> that we want to get rid of. - Managed to remove VLA allocation from two drivers pending more fixes in this area for the next merge window. - Misc janitorial fixes" * tag 'gpio-v4.17-1' of git://git.kernel.org/pub/scm/linux/kernel/git/linusw/linux-gpio: (77 commits) gpio: Add Spreadtrum PMIC EIC driver support gpio: Add Spreadtrum EIC driver support dt-bindings: gpio: Add Spreadtrum EIC controller documentation gpio: ath79: Fix potential NULL dereference in ath79_gpio_probe() pinctrl: qcom: Don't allow protected pins to be requested gpiolib: Support 'gpio-reserved-ranges' property gpiolib: Change bitmap allocation to kmalloc_array gpiolib: Extract mask allocation into subroutine dt-bindings: gpio: Add a gpio-reserved-ranges property gpio: mockup: fix a potential crash when creating debugfs entries gpio: pca953x: add compatibility for pcal6524 and pcal9555a gpio: dwapb: Add support for a bus clock gpio: Remove VLA from xra1403 driver gpio: Remove VLA from MAX3191X driver gpio: ws16c48: Implement get_multiple callback gpio: gpio-mm: Implement get_multiple callback gpio: 104-idi-48: Implement get_multiple callback gpio: 104-dio-48e: Implement get_multiple callback gpio: pcie-idio-24: Implement get_multiple/set_multiple callbacks gpio: pci-idio-16: Implement get_multiple callback ...
| * iio: Change ISA_BUS_API dependency to selectionWilliam Breathitt Gray2018-02-221-1/+2
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | The ISA_BUS_API Kconfig option enables the compilation of the ISA bus driver. The ISA bus driver does not perform any hardware interaction, and is instead just a thin layer of software abstraction to eliminate boilerplate code common to ISA-style device drivers. Since ISA_BUS_API has no dependencies and does not jeopardize the integrity of the system when enabled, drivers should select it when the ISA bus driver functionality is needed. Cc: Hartmut Knaack <knaack.h@gmx.de> Cc: Lars-Peter Clausen <lars@metafoo.de> Cc: Peter Meerwald-Stadler <pmeerw@pmeerw.net> Signed-off-by: William Breathitt Gray <vilhelm.gray@gmail.com> Acked-by: Jonathan Cameron <Jonathan.Cameron@huawei.com> Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
* | iio: Replace occurrences of magic number 0 by IIO_CHAN_INFO_RAWRodrigo Siqueira2018-03-072-2/+2
|/ | | | | | | | | | | | Usually, functions responsible for reading raw data typically relies on values from iio_chan_info_enum to correctly identify the type of data to be read. There is a set of a device driver that uses the magic number 0 instead of IIO_CHAN_INFO_RAW. This patch improves the readability by replaces the magic number 0 for the appropriate IIO_CHAN_INFO_RAW in six devices driver in the IIO subsystem. Signed-off-by: Rodrigo Siqueira <rodrigosiqueiramelo@gmail.com> Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
* iio: dac: mcp4725: Remove unneeded conversions to boolAndrew F. Davis2018-01-081-1/+1
| | | | | | | | Found with scripts/coccinelle/misc/boolconv.cocci. Signed-off-by: Andrew F. Davis <afd@ti.com> Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
* iio: stm32: Adopt SPDX identifierBenjamin Gaignard2018-01-083-41/+3
| | | | | | | | | | Add SPDX identifier in stm32's files in IIO directory Signed-off-by: Benjamin Gaignard <benjamin.gaignard@st.com> Acked-by: Fabrice Gasnier <fabrice.gasnier@st.com> Acked-by: Philippe Ombredanne <pombredanne@nexb.com> Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
* Merge tag 'staging-4.15-rc1' of ↵Linus Torvalds2017-11-1431-28/+745
|\ | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/staging Pull staging and IIO updates from Greg KH: "Here is the "big" staging and IIO driver update for 4.15-rc1. Lots and lots of little changes, almost all minor code cleanups as the Outreachy application process happened during this development cycle. Also happened was a lot of IIO driver activity, and the typec USB code moving out of staging to drivers/usb (same commits are in the USB tree on a persistent branch to not cause merge issues.) Overall, it's a wash, I think we added a few hundred more lines than removed, but really only a few thousand were modified at all. All of these have been in linux-next for a while. There might be a merge issue with Al's vfs tree in the pi433 driver (take his changes, they are always better), and the media tree with some of the odd atomisp cleanups (take the media tree's version)" * tag 'staging-4.15-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/staging: (507 commits) staging: lustre: add SPDX identifiers to all lustre files staging: greybus: Remove redundant license text staging: greybus: add SPDX identifiers to all greybus driver files staging: ccree: simplify ioread/iowrite staging: ccree: simplify registers access staging: ccree: simplify error handling logic staging: ccree: remove dead code staging: ccree: handle limiting of DMA masks staging: ccree: copy IV to DMAable memory staging: fbtft: remove redundant initialization of buf staging: sm750fb: Fix parameter mistake in poke32 staging: wilc1000: Fix bssid buffer offset in Txq staging: fbtft: fb_ssd1331: fix mirrored display staging: android: Fix checkpatch.pl error staging: greybus: loopback: convert loopback to use generic async operations staging: greybus: operation: add private data with get/set accessors staging: greybus: loopback: Fix iteration count on async path staging: greybus: loopback: Hold per-connection mutex across operations staging: greybus/loopback: use ktime_get() for time intervals staging: fsl-dpaa2/eth: Extra headroom in RX buffers ...
| * iio: dac: ti-dac082s085: Read chip spec from device tableLukas Wunner2017-10-211-9/+26
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | The two properties unique to each supported chip, resolution and number of channels, are currently gleaned from the chip's name. E.g. dac102s085 is a dual channel 10-bit DAC. ^^^ This was deemed unmaintainable by the subsystem maintainer once the driver is extended to support further chips, hence it was requested to add an explicit table for chip-specific information and use an enum to reference into it. This adds 17 LoC without any immediate gain, so make the change in a separate commit which can be reverted if we determine in 10 years that it was unnecessary. Signed-off-by: Lukas Wunner <lukas@wunner.de> Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
| * iio: dac: Add Texas Instruments 8/10/12-bit 2/4-channel DAC driverLukas Wunner2017-10-213-0/+362
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | The DACrrcS085 (rr = 08/10/12, c = 2/4) family of SPI DACs was inherited by TI when they acquired National Semiconductor in 2011. This driver was developed for and tested with the DAC082S085 built into the Revolution Pi by KUNBUS, but should work with any of the other chips as they share the same programming interface. There is also a family of I2C DACs with just a single channel called DACrr1C08x (rr = 08/10/12, x = 1/5). Their programming interface is very similar and it should be possible to extend the driver for these chips with moderate effort. Alternatively they could be integrated into ad5446.c. (The AD5301/AD5311/AD5321 use different power-down modes but otherwise appear to be comparable.) Furthermore there is a family of 8-channel DACs called DACrr8S085 (rr = 08/10/12) as well as two 16-bit DACs called DAC161Sxxx (xxx = 055/997). These are more complicated devices with support for daisy-chaining and the ability to power down each channel separately. They could either be handled by a separate driver or integrated into the present driver with a larger effort. Cc: Mathias Duckeck <m.duckeck@kunbus.de> Signed-off-by: Lukas Wunner <lukas@wunner.de> Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
| * iio: dac: ds4422/ds4424 dac driverIsmail H. Kose2017-10-093-0/+351
| | | | | | | | | | | | | | | | | | This patch provides an iio device driver for DS4422/DS4424 chips that support two/four channel 7-bit Sink/Source Current DAC. Signed-off-by: Ismail H. Kose <Ismail.Kose@maximintegrated.com> Signed-off-by: Ismail H. Kose <ihkose@gmail.com> Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
| * drivers: misc: ti_dac7512: Remove duplicate driverLukas Wunner2017-09-131-0/+10
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | The Texas Instruments DAC7512 has the exact same pinout, programming interface and power-down modes as the Texas Instruments DAC121S101 and Analog Devices AD5320, which are already supported by the IIO driver ad5446.c. Remove the duplicate misc driver. This requires user space to migrate to the standardized IIO sysfs ABI. (In other words, it needs to change a filename.) The IIO driver supports the chip's features more fully, e.g. the ability to power down the output or choose one of the available powerdown modes. There is an oddity with the misc driver in that it initializes the SPI slave to SPI_MODE_0, in contradiction to the datasheet which specifies that data is latched in on the falling edge, implying that SPI_MODE_1 or SPI_MODE_2 must be used. Another oddity is that Kconfig and the MODULE_DESCRIPTION() claim the chip has 16-bit resolution although it actually has 12-bit. Datasheets: http://www.ti.com/lit/ds/symlink/dac7512.pdf http://www.ti.com/lit/ds/symlink/dac121s101.pdf http://www.analog.com/media/en/technical-documentation/data-sheets/AD5320.pdf Signed-off-by: Lukas Wunner <lukas@wunner.de> Acked-by: Daniel Mack <daniel@zonque.org> Acked-by: Arnd Bergmann <arnd@arndb.de> Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
| * iio: dac: ad5446: Add IDs of compatible Texas Instruments chipsLukas Wunner2017-09-132-1/+5
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | The Texas Instruments DAC081S101, DAC101S101 and DAC121S101 have the exact same pinout, programming interface and power-down modes as the AD5300, AD5310 and AD5320, respectively, and their datasheets declare them "a direct replacement" for the Analog Devices chips. This may not be immediately obvious to a casual observer, so add them to the supported modalias strings. Datasheets: http://www.ti.com/lit/ds/symlink/dac081s101.pdf http://www.ti.com/lit/ds/symlink/dac101s101.pdf http://www.ti.com/lit/ds/symlink/dac121s101.pdf http://www.analog.com/media/en/technical-documentation/data-sheets/AD5300.pdf http://www.analog.com/media/en/technical-documentation/data-sheets/AD5310.pdf http://www.analog.com/media/en/technical-documentation/data-sheets/AD5320.pdf Signed-off-by: Lukas Wunner <lukas@wunner.de> Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
| * iio:dac: drop assignment of iio_info.driver_moduleJonathan Cameron2017-08-2227-27/+0
| | | | | | | | | | | | | | | | | | The equivalent of this is now done via macro magic when the relevant register call is made. The actual structure element will shortly go away. Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com> Reviewed-by: Lars-Peter Clausen <lars@metafoo.de>