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2014-12-08Merge branch 'pm-runtime'Rafael J. Wysocki
* pm-runtime: (25 commits) i2c-omap / PM: Drop CONFIG_PM_RUNTIME from i2c-omap.c dmaengine / PM: Replace CONFIG_PM_RUNTIME with CONFIG_PM drivers: sh / PM: Replace CONFIG_PM_RUNTIME with CONFIG_PM e1000e / igb / PM: Eliminate CONFIG_PM_RUNTIME MMC / PM: Replace CONFIG_PM_RUNTIME with CONFIG_PM MFD / PM: Replace CONFIG_PM_RUNTIME with CONFIG_PM misc / PM: Replace CONFIG_PM_RUNTIME with CONFIG_PM media / PM: Replace CONFIG_PM_RUNTIME with CONFIG_PM input / PM: Replace CONFIG_PM_RUNTIME with CONFIG_PM iio / PM: Replace CONFIG_PM_RUNTIME with CONFIG_PM hsi / OMAP / PM: Replace CONFIG_PM_RUNTIME with CONFIG_PM i2c-hid / PM: Replace CONFIG_PM_RUNTIME with CONFIG_PM drm / exynos / PM: Replace CONFIG_PM_RUNTIME with CONFIG_PM gpio / PM: Replace CONFIG_PM_RUNTIME with CONFIG_PM hwrandom / exynos / PM: Use CONFIG_PM in #ifdef block / PM: Replace CONFIG_PM_RUNTIME with CONFIG_PM USB / PM: Drop CONFIG_PM_RUNTIME from the USB core PM: Merge the SET*_RUNTIME_PM_OPS() macros PM / Kconfig: Do not select PM directly from Kconfig files PCI / PM: Drop CONFIG_PM_RUNTIME from the PCI core ...
2014-12-08Merge branches 'acpi-video' and 'acpi-pmic'Rafael J. Wysocki
* acpi-video: ACPI / video: Run _BCL before deciding registering backlight * acpi-pmic: ACPI / PMIC: AXP288: support virtual GPIO in ACPI table ACPI / PMIC: support PMIC operation region for XPower AXP288 ACPI / PMIC: support PMIC operation region for CrystalCove iio/axp288_adc: remove THIS_MODULE owner mfd/axp20x: avoid irq numbering collision iio: adc: Add module device table for autoloading iio: adc: Add support for axp288 adc mfd: axp20x: Extend axp20x to support axp288 pmic
2014-12-04iio / PM: Replace CONFIG_PM_RUNTIME with CONFIG_PMRafael J. Wysocki
After commit b2b49ccbdd54 (PM: Kconfig: Set PM_RUNTIME if PM_SLEEP is selected) PM_RUNTIME is always set if PM is set, so #ifdef blocks depending on CONFIG_PM_RUNTIME may now be changed to depend on CONFIG_PM. Replace CONFIG_PM_RUNTIME with CONFIG_PM everywhere under drivers/iio/. Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com> Acked-by: Srinivas Pandruvada <srinivas.pandruvada@linux.intel.com>
2014-11-25Merge branch 'ib-mfd-iio-3.19' of ↵Rafael J. Wysocki
git://git.kernel.org/pub/scm/linux/kernel/git/lee/mfd into acpi-pmic Pull MFD changes that the ACPI PMIC changes depend on from Lee Jones.
2014-11-18iio/axp288_adc: remove THIS_MODULE ownerJacob Pan
This is no longer needed in that platform driver_register will do it. Signed-off-by: Jacob Pan <jacob.jun.pan@linux.intel.com> Acked-by: Jonathan Cameron <jic23@kernel.org> Signed-off-by: Lee Jones <lee.jones@linaro.org>
2014-11-18iio: adc: Add module device table for autoloadingAaron Lu
Add the module device id table so that the driver can be automatically loaded once the platform device is created. Signed-off-by: Aaron Lu <aaron.lu@intel.com> Signed-off-by: Jacob Pan <jacob.jun.pan@linux.intel.com> Acked-by: Jonathan Cameron <jic23@kernel.org> Signed-off-by: Lee Jones <lee.jones@linaro.org>
2014-11-16iio: accel: bmc150: set low default thresholdsSrinivas Pandruvada
Set the threshold to low by default. With this thresholds any movement on the device with this sensor will generate event. Signed-off-by: Srinivas Pandruvada <srinivas.pandruvada@linux.intel.com> Signed-off-by: Jonathan Cameron <jic23@kernel.org>
2014-11-16iio: accel: bmc150: Fix iio_event_spec directionSrinivas Pandruvada
Change event spec direction from IIO_EV_DIR_RISING | IIO_EV_DIR_FALLING to IIO_EV_DIR_EITHER Suggested-by: Daniel Baluta <daniel.baluta@intel.com> Signed-off-by: Srinivas Pandruvada <srinivas.pandruvada@linux.intel.com> Signed-off-by: Jonathan Cameron <jic23@kernel.org>
2014-11-16iio: accel: bmc150: Send x, y and z motion separatelySrinivas Pandruvada
This chip is capable to identify motion across x, y and z axes. So send different events. Signed-off-by: Srinivas Pandruvada <srinivas.pandruvada@linux.intel.com> Signed-off-by: Jonathan Cameron <jic23@kernel.org>
2014-11-16iio: accel: bmc150: Error handling when mode set failsSrinivas Pandruvada
When mode set fails due to some transient failures, it will atleast reset the state of runtime usage count and also let the runtime suspend retry from the driver framework. Signed-off-by: Srinivas Pandruvada <srinivas.pandruvada@linux.intel.com> Signed-off-by: Jonathan Cameron <jic23@kernel.org>
2014-11-16iio: gyro: bmg160: Fix iio_event_spec directionSrinivas Pandruvada
Change event spec direction from IIO_EV_DIR_RISING | IIO_EV_DIR_FALLING to IIO_EV_DIR_EITHER Suggested-by: Daniel Baluta <daniel.baluta@intel.com> Signed-off-by: Srinivas Pandruvada <srinivas.pandruvada@linux.intel.com> Signed-off-by: Jonathan Cameron <jic23@kernel.org>
2014-11-16iio: gyro: bmg160: Send x, y and z motion separatelySrinivas Pandruvada
This chip is capable to identify motion across x, y and z axes. So send different events. Signed-off-by: Srinivas Pandruvada <srinivas.pandruvada@linux.intel.com> Signed-off-by: Jonathan Cameron <jic23@kernel.org>
2014-11-16iio: gyro: bmg160: Don't let interrupt mode to be open drainSrinivas Pandruvada
Change the mode to push/pull type instead of open drain as some platforms fails to drive the GPIO pin with open drain. Signed-off-by: Srinivas Pandruvada <srinivas.pandruvada@linux.intel.com> Signed-off-by: Jonathan Cameron <jic23@kernel.org>
2014-11-16iio: gyro: bmg160: Error handling when mode set failsSrinivas Pandruvada
When mode set fails due to some transient failures, it will atleast reset the state of runtime usage count and also let the runtime suspend retry from the driver framework. Signed-off-by: Srinivas Pandruvada <srinivas.pandruvada@linux.intel.com> Signed-off-by: Jonathan Cameron <jic23@kernel.org>
2014-11-15iio: adc: men_z188_adc: Add terminating entry for men_z188_idsAxel Lin
The mcb_device_id table is supposed to be zero-terminated. Signed-off-by: Axel Lin <axel.lin@ingics.com> Cc: <Stable@vger.kernel.org> Signed-off-by: Jonathan Cameron <jic23@kernel.org>
2014-11-15iio: accel: kxcjk-1013: Fix kxcjk10013_set_rangeDaniel Baluta
Currently, we get the new GSEL bits by OR-ing the old values with the new ones. This only works first time when the old values are 0. Startup: * GSEL0 = 0, GSEL1 = 0 Set range to 4G: (GSEL0 = 1, GSEL1 = 0) * GSEL0 = 0 | 1 = 1 * GSEL1 = 0 | 0 = 0 * correct Change range to 2G: (GSEL0 = 0, GSEL1 = 0) * GSEL0 = 1 | 0 = 1 * GSEL1 = 0 | 0 = 0 * wrong, GSEL0 should be 0 This has the nice effect that we can use the full scale range, exported in in_accel_scale_available. Fixes: a735e3d7f03 (iio: accel: kxcjk-1013: Set adjustable range) Signed-off-by: Daniel Baluta <daniel.baluta@intel.com> Reviewed-by: Srinivas Pandruvada <srinivas.pandruvada@linux.intel.com> Cc: <Stable@vger.kernel.org> Signed-off-by: Jonathan Cameron <jic23@kernel.org>
2014-11-05iio: as3935: allocate correct iio_device sizeGeorge McCollister
Signed-off-by: George McCollister <george.mccollister@gmail.com> Acked-by: Hartmut Knaack <knaack.h@gmx.de> Cc: <Stable@vger.kernel.org> Signed-off-by: Jonathan Cameron <jic23@kernel.org>
2014-11-05io: accel: kxcjk-1013: Fix iio_event_spec directionDaniel Baluta
Because IIO_EV_DIR_* are not bitmasks but enums, IIO_EV_DIR_RISING | IIO_EV_DIR_FALLING is not equal with IIO_EV_DIR_EITHER. This could lead to potential misformatted sysfs attributes like: * in_accel_x_thresh_(null)_en * in_accel_x_thresh_(null)_period * in_accel_x_thresh_(null)_value or even memory corruption. Fixes: b4b491c083 (iio: accel: kxcjk-1013: Support threshold) Signed-off-by: Daniel Baluta <daniel.baluta@intel.com> Cc: <Stable@vger.kernel.org> Signed-off-by: Jonathan Cameron <jic23@kernel.org>
2014-11-05iio: tsl4531: Fix compiler error when CONFIG_PM_OPS is not definedDan Murphy
Fix the compiler error when the CONFIG_PM_OPS flag is not set. drivers/iio/light/tsl4531.c:235:8: error: ‘tsl4531_suspend’ undeclared here (not in a function) drivers/iio/light/tsl4531.c:235:8: error: ‘tsl4531_resume’ undeclared here (not in a function) Signed-off-by: Dan Murphy <dmurphy@ti.com> Signed-off-by: Jonathan Cameron <jic23@kernel.org>
2014-11-05iio: st_sensors: Fix buffer copyRobin van der Gracht
Use byte_for_channel as iterator to properly initialize the buffer. Signed-off-by: Robin van der Gracht <robin@protonic.nl> Acked-by: Denis Ciocca <denis.ciocca@st.com> Signed-off-by: Jonathan Cameron <jic23@kernel.org> Cc: <Stable@vger.kernel.org>
2014-10-07iio: adc: Add support for axp288 adcJacob Pan
Platform driver for X-Powers AXP288 ADC, which is a sub-device of the customized AXP288 PMIC for Intel Baytrail-CR platforms. GPADC device enumerates as one of the MFD cell devices. It uses IIO infrastructure to communicate with userspace and consumer drivers. Usages of ADC channels include battery charging and thermal sensors. Based on initial work by: Ramakrishna Pallala <ramakrishna.pallala@intel.com> Acked-by: Jonathan Cameron <jic23@kernel.org> Signed-off-by: Jacob Pan <jacob.jun.pan@linux.intel.com> Signed-off-by: Lee Jones <lee.jones@linaro.org>
2014-09-22staging: iio: fix up merge errorGreg Kroah-Hartman
Fix up a build merge error in drivers/iio/accel/bma180.c that I caused. Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2014-09-22Merge 3.17-rc6 into staging-next.Greg Kroah-Hartman
We want the fixes in there, and it resolves a merge issue with drivers/iio/accel/bma180.c Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2014-09-14iio:bma180: Add BMA250 chip supportPeter Meerwald
the BMA250 has only 10-bit resolution; while the data readout registers have identical layout, the configuration is completely different compared to the BMA180 datasheet: http://ae-bst.resource.bosch.com/media/products/dokumente/bma250/BST-BMA250-DS002-05.pdf Signed-off-by: Peter Meerwald <pmeerw@pmeerw.net> Cc: Oleksandr Kravchenko <o.v.kravchenko@globallogic.com> Signed-off-by: Jonathan Cameron <jic23@kernel.org>
2014-09-14iio:bma180: Implement _available sysfs attribute dynamicallyPeter Meerwald
makes it easier to add more chip variants and removes redundancy: scales and frequencies are now stated just once Signed-off-by: Peter Meerwald <pmeerw@pmeerw.net> Cc: Oleksandr Kravchenko <o.v.kravchenko@globallogic.com> Signed-off-by: Jonathan Cameron <jic23@kernel.org>
2014-09-14iio:bma180: Prepare for accelerometer channels with different resolutionsPeter Meerwald
allow to specify channels resolution and compute shift assuming 16-bit registers and MSB allocation Signed-off-by: Peter Meerwald <pmeerw@pmeerw.net> Cc: Oleksandr Kravchenko <o.v.kravchenko@globallogic.com> Signed-off-by: Jonathan Cameron <jic23@kernel.org>
2014-09-14iio:bma180: Introduce part-specific _config() and disable() codePeter Meerwald
move part of bma180_init() to bma180_config() (split initialization and configuration code); configuration is heavily chip-specific Signed-off-by: Peter Meerwald <pmeerw@pmeerw.net> Cc: Oleksandr Kravchenko <o.v.kravchenko@globallogic.com> Signed-off-by: Jonathan Cameron <jic23@kernel.org>
2014-09-14iio:bma180: Introduce part_info to differentiate further chip variantsPeter Meerwald
Signed-off-by: Peter Meerwald <pmeerw@pmeerw.net> Cc: Oleksandr Kravchenko <o.v.kravchenko@globallogic.com> Signed-off-by: Jonathan Cameron <jic23@kernel.org>
2014-09-14iio:bma180: Drop _update_scan_mode()Peter Meerwald
statically allocate maximum size Signed-off-by: Peter Meerwald <pmeerw@pmeerw.net> Cc: Oleksandr Kravchenko <o.v.kravchenko@globallogic.com> Signed-off-by: Jonathan Cameron <jic23@kernel.org>
2014-09-14iio:bma180: Expose temperature channelPeter Meerwald
8-bit signed; 0 LSB @ 24 °C, 0.5 °C per LSB Signed-off-by: Peter Meerwald <pmeerw@pmeerw.net> Cc: Oleksandr Kravchenko <o.v.kravchenko@globallogic.com> Signed-off-by: Jonathan Cameron <jic23@kernel.org>
2014-09-14iio:bma180: Use bool instead of int for statePeter Meerwald
Signed-off-by: Peter Meerwald <pmeerw@pmeerw.net> Cc: Oleksandr Kravchenko <o.v.kravchenko@globallogic.com> Signed-off-by: Jonathan Cameron <jic23@kernel.org>
2014-09-14iio:bma180: Rename BMA_180 to BMA180_Peter Meerwald
Signed-off-by: Peter Meerwald <pmeerw@pmeerw.net> Cc: Oleksandr Kravchenko <o.v.kravchenko@globallogic.com> Signed-off-by: Jonathan Cameron <jic23@kernel.org>
2014-09-14iio:bma180: Prefix remaining tables and functions with bma18_Peter Meerwald
and minor cleanups Signed-off-by: Peter Meerwald <pmeerw@pmeerw.net> Cc: Oleksandr Kravchenko <o.v.kravchenko@globallogic.com> Signed-off-by: Jonathan Cameron <jic23@kernel.org>
2014-09-14iio:bma180: Enable use of device without IRQPeter Meerwald
Signed-off-by: Peter Meerwald <pmeerw@pmeerw.net> Cc: Oleksandr Kravchenko <o.v.kravchenko@globallogic.com> Signed-off-by: Jonathan Cameron <jic23@kernel.org>
2014-09-14iio: gyro: bmi055 gyro sensor driverIrina Tirdea
Add support for the BMI055 gyroscope sensor. BMI055 is a package consisting of an acceleration sensor and a gyroscope. This patch adds support for the gyroscope only. Spec downloaded from: http://ae-bst.resource.bosch.com/media/products/dokumente/bmi055/BST-BMI055-DS000-06.pdf The BMI055 gyroscope uses the same register definition as BMG160, but does not specify a temp register. However, the temp register seems to be working in the same way as for BMG160, so this patch does not remove the temp channel for BMI055. Signed-off-by: Irina Tirdea <irina.tirdea@intel.com> Reviewed-by: Srinivas Pandruvada <srinivas.pandruvada@linux.intel.com> Signed-off-by: Jonathan Cameron <jic23@kernel.org>
2014-09-14iio: accel: kxcjk-1013: Fix defined but unused warningDaniel Baluta
Noticed when compiling with CONFIG_PM_RUNTIME not set: kxcjk-1013.c: warning: ‘kxcjk1013_get_startup_times’ defined but not used [-Wunused-function] Introduced by commit 124e1b1d (iio: accel: kxcjk-1013: support runtime pm). Signed-off-by: Daniel Baluta <daniel.baluta@intel.com> Reviewed-by: Srinivas Pandruvada <srinivas.pandruvada@linux.intel.com> Signed-off-by: Jonathan Cameron <jic23@kernel.org>
2014-09-14iio: magn: ak8975: fix unnecessary casting between char* and const char*Irina Tirdea
Use const char* instead of casting const char* to char*. Signed-off-by: Irina Tirdea <irina.tirdea@intel.com> Signed-off-by: Jonathan Cameron <jic23@kernel.org>
2014-09-14iio: gyro: bmg160: only set power state if PM_RUNTIME is definedIrina Tirdea
When CONFIG_PM_RUNTIME is not defined and bmg160 tries to power off the device, bmg160_set_power_state will call pm_runtime_put_autosuspend, which is not implemented (wil return -ENOSYS). Only call bmg160_set_power_state when CONFIG_PM_RUNTIME is defined. Signed-off-by: Irina Tirdea <irina.tirdea@intel.com> Acked-by: Hartmut Knaack <knaack.h@gmx.de> Signed-off-by: Jonathan Cameron <jic23@kernel.org>
2014-09-14iio:magnetometer: bugfix magnetometers gain valuesDenis CIOCCA
This patch fix gains values. The first driver was designed using engineering samples, in mass production the values are changed. Signed-off-by: Denis Ciocca <denis.ciocca@st.com> Cc: Stable@vger.kernel.org Signed-off-by: Jonathan Cameron <jic23@kernel.org>
2014-09-14iio: adc: at91: don't use the last converted data registerLudovic Desroches
If touchscreen mode is enabled and a conversion is requested on another channel, the result in the last converted data register can be a touchscreen relative value. Starting a conversion involves to do a conversion for all active channel. It starts with ADC channels and ends with touchscreen channels. Then if ADC_LCD register is not read quickly, its content may be a touchscreen conversion. To remove this temporal constraint, the conversion value is taken from the channel data register. Signed-off-by: Ludovic Desroches <ludovic.desroches@atmel.com> Acked-by: Alexandre Belloni <alexandre.belloni@free-electrons.com> Acked-by: Nicolas Ferre <nicolas.ferre@atmel.com> Cc: Stable@vger.kernel.org Signed-off-by: Jonathan Cameron <jic23@kernel.org>
2014-09-14iio: adc: xilinx-xadc: assign auxiliary channels address correctlySubbaraya Sundeep Bhatta
This patch fixes incorrect logic for assigning address to auxiliary channels of xilinx xadc. Signed-off-by: Subbaraya Sundeep Bhatta <sbhatta@xilinx.com> Acked-by: Lars-Peter Clausen <lars@metafoo.de> Cc: Stable@vger.kernel.org Signed-off-by: Jonathan Cameron <jic23@kernel.org>
2014-09-14iio: accel: kxcjk-1013: add support for kxtj2-1009Daniel Baluta
This patch adds support for KXTJ2-1009 3-axis acceleromenter sensor. KXTJ2-1009 uses the same register definitions as KXCJK-1013. The specification for KXTJ2-1009 can be downloaded from: http://www.kionix.com/sites/default/files/KXTJ2-1009%20Specifications%20Rev%204.pdf Reviewed-by: Srinivas Pandruvada <srinivas.pandruvada@linux.intel.com> Signed-off-by: Daniel Baluta <daniel.baluta@intel.com> Signed-off-by: Jonathan Cameron <jic23@kernel.org>
2014-09-13iio: accel: BMC150: add support for other Bosch chipsLaurentiu Palcu
The following chips are either similar or have only the resolution different. Hence, change this driver to support these chips too: BMI055 - combo chip (accelerometer part is identical to BMC150's) BMA255 - identical to BMC150's accelerometer BMA222E - 8 bit resolution BMA250E - 10 bit resolution BMA280 - 14 bit resolution Additionally: * add bmc150_accel_match_acpi_device() function to check that the device has been enumerated through ACPI; * rename bmc150_accel_acpi_gpio_probe() to bmc150_accel_gpio_probe() since the ACPI matching has been moved to the new function. Also, this will allow for the GPIO matching to be done against a device tree too, not only ACPI tree; * rename bmc150_scale_info struct member 'range' to 'reg_range' to be consistent with the naming convention used elsewhere in the driver and declare it u8, instead of int; * change CONFIG description to list all supported chips; Signed-off-by: Laurentiu Palcu <laurentiu.palcu@intel.com> Acked-by: Srinivas Pandruvada <srinivas.pandruvada@linux.intel.com> Signed-off-by: Jonathan Cameron <jic23@kernel.org>
2014-09-10iio: Add Dyna-Image AL3320A ambient light sensor driverDaniel Baluta
Minimal implementation. This driver provides raw illuminance readings. This is based on drivers/hwmon/al3320.c (*) driver from msm tree written by Tsechih Lin <Tsechih_Lin@asus.com> * https://android.googlesource.com/kernel/msm.git Signed-off-by: Daniel Baluta <daniel.baluta@intel.com> Reviewed-by: Hartmut Knaack <knaack.h@gmx.de> Signed-off-by: Jonathan Cameron <jic23@kernel.org>
2014-08-30iio: accel: kxcjk-1013: add support for kxcj9-1008Daniel Baluta
This patch adds support for KXCJ9-1008 3-axis acceleromenter sensor. KXCJ9-1008 uses the same register definitions as KXCJK-1013. The specification for KXCJ9-1008 can be downloaded from: http://www.kionix.com/sites/default/files/KXCJ9-1008%20Specifications%20Rev%205.pdf Signed-off-by: Daniel Baluta <daniel.baluta@intel.com> Signed-off-by: Jonathan Cameron <jic23@kernel.org>
2014-08-30iio: accel: BMC150: fix issues when CONFIG_PM_RUNTIME is not setLaurentiu Palcu
When CONFIG_PM_RUNTIME is not set, the following issues are seen: * warning message at compilation time: warning: 'bmc150_accel_get_startup_times' defined but not used [-Wunused-function] * bmc150_accel_set_power_state() will always fail and reading the accelerometer data is impossible; This occurs because of the call to pm_runtime_put_autosuspend calls __pm_runtime_suspend which returns -ENOSYS. This commit fixes these. Signed-off-by: Laurentiu Palcu <laurentiu.palcu@intel.com> Signed-off-by: Jonathan Cameron <jic23@kernel.org>
2014-08-30iio: accel: BMC150: fix scale value for 16GLaurentiu Palcu
According to documentation ([1] - page 27), the range for 16G is 7.81mg/LSB. Converted to SI, this is: 7.81 * 10^-3 * 9.80665 m/s^2 / LSB = 0.0765899365 m/s^2 / LSB [1] http://ae-bst.resource.bosch.com/media/products/dokumente/bmc150/BST-BMC150-DS000-04.pdf Signed-off-by: Laurentiu Palcu <laurentiu.palcu@intel.com> Signed-off-by: Jonathan Cameron <jic23@kernel.org>
2014-08-30iio: sensors-core: st: Check st_sensors_set_drdy_int_pin()'s return valueLee Jones
Value from st_sensors_set_drdy_int_pin() is assigned to err here, but that stored value is not used before it is overwritten. To fix this we're enforcing a check on st_sensors_set_drdy_int_pin()'s return value and if it's an error, we're returning right away. Cc: jic23@kernel.org Cc: linux-iio@vger.kernel.org Signed-off-by: Lee Jones <lee.jones@linaro.org> Signed-off-by: Jonathan Cameron <jic23@kernel.org>
2014-08-30iio: adc: at91: make the function handle_adc_eoc_trigger() staticJosh Wu
The handle_adc_eoc_trigger() in only used in at91_adc.c. So make it static. Signed-off-by: Josh Wu <josh.wu@atmel.com> Acked-by: Nicolas Ferre <nicolas.ferre@atmel.com> Signed-off-by: Jonathan Cameron <jic23@kernel.org>
2014-08-30iio: adc: rockchip_saradc: remove unused variable in probeHeiko Stübner
The rate variable in the probe function of the saradc is a remnant of a previous patch iteration. It is unused and thus produces a compile time warning. Therefore remove it. Signed-off-by: Heiko Stuebner <heiko@sntech.de> Signed-off-by: Jonathan Cameron <jic23@kernel.org>