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2019-05-30treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 157Thomas Gleixner1-10/+1
Based on 3 normalized pattern(s): this program is free software you can redistribute it and or modify it under the terms of the gnu general public license as published by the free software foundation either version 2 of the license or at your option any later version this program is distributed in the hope that it will be useful but without any warranty without even the implied warranty of merchantability or fitness for a particular purpose see the gnu general public license for more details this program is free software you can redistribute it and or modify it under the terms of the gnu general public license as published by the free software foundation either version 2 of the license or at your option any later version [author] [kishon] [vijay] [abraham] [i] [kishon]@[ti] [com] this program is distributed in the hope that it will be useful but without any warranty without even the implied warranty of merchantability or fitness for a particular purpose see the gnu general public license for more details this program is free software you can redistribute it and or modify it under the terms of the gnu general public license as published by the free software foundation either version 2 of the license or at your option any later version [author] [graeme] [gregory] [gg]@[slimlogic] [co] [uk] [author] [kishon] [vijay] [abraham] [i] [kishon]@[ti] [com] [based] [on] [twl6030]_[usb] [c] [author] [hema] [hk] [hemahk]@[ti] [com] this program is distributed in the hope that it will be useful but without any warranty without even the implied warranty of merchantability or fitness for a particular purpose see the gnu general public license for more details extracted by the scancode license scanner the SPDX license identifier GPL-2.0-or-later has been chosen to replace the boilerplate/reference in 1105 file(s). Signed-off-by: Thomas Gleixner <tglx@linutronix.de> Reviewed-by: Allison Randal <allison@lohutok.net> Reviewed-by: Richard Fontana <rfontana@redhat.com> Reviewed-by: Kate Stewart <kstewart@linuxfoundation.org> Cc: linux-spdx@vger.kernel.org Link: https://lkml.kernel.org/r/20190527070033.202006027@linutronix.de Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2019-04-04iio: adc: fix a potential NULL pointer dereferenceKangjie Lu1-0/+2
devm_iio_trigger_alloc may fail and return NULL. The fix returns ENOMEM when it fails. Signed-off-by: Kangjie Lu <kjlu@umn.edu> Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
2017-08-22iio:adc: drop assign iio_info.driver_module and iio_trigger_ops.ownerJonathan Cameron1-2/+0
The equivalent of both of these are now done via macro magic when the relevant register calls are 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>
2017-06-26Merge tag 'iio-for-4.13b' of git://git.kernel.org/pub/scm/linux/kernel/git/jic23/iio into staging-nextGreg Kroah-Hartman1-16/+16
Jonathan writes: Second set of IIO new device support, features and cleanups for the 4.13 cycle. A few reverts here. One was a general failure to notice a device was already supported by another driver. The second is due to a review comment pointing out that the original patch was a bad idea and would break existing systems. Reverts * bma180 - Revert addition of support for the BMA250E it is already supported by the bmc150-accel and better supported at that. Oops. * hi8435 - The fix for cleanup of the reset gpio stuff isn't a good way to go. It breaks systems where an inverting level convertor is used. The right fix is to make the original devicetree correct - even if it involves patching the devicetree in kernel. New Device Support * stm32-adc - STM32H7 support and bindings. Features * core - add a hardware triggered operating mode for systems in which the actual trigger is never seen by the kernel. This is typically only used when a device 'can' use other triggers, but if a particular magic one is enabled the interrupt is effectively handled in hardware and we never see it. * st-lsm6dsx - support active low interrupts. * stm32-adc - Make the core adc clock optional as not all hardware supported requires it. - Make the bus clock optional in the per instance driver as it may be shared by all instances of the ADC and is handled by the core. - Rework to have a data structure representing the device type specific elements. * stm32-trigger (and counter) - Use the INDIO_HARDWARE_TRIGGERED_MODE where appropriate. - Add an attribute to configure device modes for quadrature counting etc. Clean ups and minor fixes * IIO core. - use __sysfs_match_string() helper rather than open coding the same. * ad7791 - use sysfs_match_string() helper rather than open coding the same. * aspeed-adc - handle return value of clk_prepare_enable * cpcap - Fix default register values and ensure the battery thermistor is enabled correctly. - Fix the reported die temperature where we can - docs are lacking. - Remove the hung interrupt quirk as no longer happens due to fix in the mfd driver. * hi8435 - Remove &s from hi8435_info definition as unneeded and inconsistent. * hid-sensor-trgger - Add kconfig depends on IIO_BUFFER (fixes patch in previous series) * ina2xx - Make the use of iio_info_mask* elements consistent for all channels. This doesn't have any visible effect, but acts as clear documentation of which channels various resulting attributes apply to. * lpc32xx - handle the return value of clk_prepare_enable. * meson-saradc - NULL instead of 0 for pointer. * mma9551 - use NULL for GPIO connection ID to aid implementation fo ACPI support. Here the connection ID doesn't actually tell us anything and it is much easier to deal with the driver if it's not there. * mpu6050 - Fix lock issues through use of a local mux. - Replace sprintf with scnprintf as appropriate. - Check whoami against all known values. This allows for a small number of boards where we are really fishing for the part not being present at all. It is unfortunately common to have undescribed changes to use newer chips. We paper over this but just emitting a warning for those cases as long as we know about. * mxs-lradc - Fix some non static warnings. * rcar-adc - Part of making the naming for this part consistent across the kernel. * st_accel - drop some spi_device_id entries for variants with no SPI support * st_magn - drop some spi_device_id entries for variants with no SPI support. * sx9500 - Use devm_gpiod_get instead of indexed value with an index of 0 on all occasions. * twl4030 - Drop unused twl4030_get_madc_conversion as callers removed now throughout kernel. - Unexport twl4030_madc_conversion() as no used only within this driver. - Drop twl4030_madc_user_params as not used now. - Drop twl4030_madc_request.func_cb as not used now. - Fold the twl4030-madc.h header into the driver as no longer used anywhere else in the kernel. * xilinx - Handle the return value of clk_prepare_enable
2017-06-03iio: adc: mxs-lradc: Fix return value check in mxs_lradc_adc_probe()Wei Yongjun1-2/+5
In case of error, the function devm_ioremap() returns NULL pointer not ERR_PTR(). The IS_ERR() test in the return value check should be replaced with NULL test. Also add NULL test for iores. Signed-off-by: Wei Yongjun <weiyongjun1@huawei.com> Signed-off-by: Jonathan Cameron <jic23@kernel.org>
2017-06-03iio: adc: mxs-lradc: fix non-static symbol warningsPaolo Cretaro1-16/+16
Fix sparse warning "symbol foo was not declared. Should it be static?" for the following symbols: mx23_lradc_adc_irq_names mx28_lradc_adc_irq_names iio_dev_attr_in_voltage0_scale_available iio_dev_attr_in_voltage1_scale_available iio_dev_attr_in_voltage2_scale_available iio_dev_attr_in_voltage3_scale_available iio_dev_attr_in_voltage4_scale_available iio_dev_attr_in_voltage5_scale_available iio_dev_attr_in_voltage6_scale_available iio_dev_attr_in_voltage7_scale_available iio_dev_attr_in_voltage10_scale_available iio_dev_attr_in_voltage11_scale_available iio_dev_attr_in_voltage12_scale_available iio_dev_attr_in_voltage13_scale_available iio_dev_attr_in_voltage14_scale_available iio_dev_attr_in_voltage15_scale_available Signed-off-by: Paolo Cretaro <paolocretaro@gmail.com> Signed-off-by: Jonathan Cameron <jic23@kernel.org>
2017-03-23iio: adc: mxs-lradc: Add support for ADC driverKsenija Stanojevic1-0/+843
Add support for sixteen-channel 12-bit resolution ADC and its functions, which include general-purpose ADC readings, battery voltage measurement, and die temperature measurement. Signed-off-by: Ksenija Stanojevic <ksenija.stanojevic@gmail.com> Reviewed-by: Jonathan Cameron <jic23@kernel.org> Reviewed-by: Marek Vasut <marex@denx.de> Signed-off-by: Lee Jones <lee.jones@linaro.org>