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* iio:light:stk3310: make endianness independent of hostHartmut Knaack2015-07-191-6/+6
| | | | | | | | | Data is stored in the device in be16 format. Make use of be16_to_cpu and cpu_to_be16 to have correct endianness on any host architecture. Signed-off-by: Hartmut Knaack <knaack.h@gmx.de> Reviewed-by: Tiberiu Breana <tiberiu.a.breana@intel.com> Signed-off-by: Jonathan Cameron <jic23@kernel.org>
* iio:light:stk3310: move device register to end of probeHartmut Knaack2015-07-191-7/+7
| | | | | | | | | | | | | | | iio_device_register should be the last operation during probe. Therefor move up interrupt setup code and while at it, change the check for invalid values of client->irq to be smaller than zero. Fixes: 3dd477acbdd1 ("iio: light: Add threshold interrupt support for STK3310") As the device_register makes the userspace interfaces of the device available it is possible for requests to come in before the probe sequence has finished. This can lead to unhandled interrupts and similar. Signed-off-by: Hartmut Knaack <knaack.h@gmx.de> Reviewed-by: Tiberiu Breana <tiberiu.a.breana@intel.com> Signed-off-by: Jonathan Cameron <jic23@kernel.org>
* iio: mma8452: use iio event type IIO_EV_TYPE_MAGMartin Kepplinger2015-07-191-4/+4
| | | | | | | | | | | | | | | IIO_EV_TYPE_THRESH in rising direction describes an event where the threshold is crossed in rising direction, positive or negative values being possible. This is not the case here. Since the threshold is no signed value and only the magnitude is compared, IIO_EV_TYPE_MAG is what describes the behaviour of these devices, see the sysfs-bus-iio ABI Documentation. Signed-off-by: Martin Kepplinger <martin.kepplinger@theobroma-systems.com> Signed-off-by: Christoph Muellner <christoph.muellner@theobroma-systems.com> Cc: <Stable@vger.kernel.org> Signed-off-by: Jonathan Cameron <jic23@kernel.org>
* iio: mcp320x: Fix NULL pointer dereferenceManfred Schlaegl2015-07-191-0/+2
| | | | | | | | | | | | | | | | | | | On reading in_voltage_scale of we got an NULL pointer dereference Oops. The reason for this is, that mcp320x_read_raw tries to access chip_info->resolution from struct mcp320x, but chip_info is never set. chip_info was never set since the driver was added, but there was no acute problem, because it was not referenced. The acute problem exists since b12206e917ac34bec41b9ff93d37d8bd53a2b3bc iio: adc: mcp320x. Add support for more ADCs This patch fixes the issue by setting chip_info in mcp320x_probe. Signed-off-by: Manfred Schlaegl <manfred.schlaegl@gmx.at> Reviewed-by: Michael Welling <mwelling@ieee.org> Signed-off-by: Jonathan Cameron <jic23@kernel.org>
* iio: adc: vf610: fix the adc register read fail issueFugang Duan2015-07-191-1/+1
| | | | | | | | | | Read the register only when the adc register address is 4 byte aligned. (rather than the other way around). Signed-off-by: Haibo Chen <haibo.chen@freescale.com> Signed-off-by: Fugang Duan <B38611@freescale.com> Cc: <Stable.vger.kernel.org> Signed-off-by: Jonathan Cameron <jic23@kernel.org>
* iio: mlx96014: Replace offset signCrt Mori2015-07-191-1/+1
| | | | | | | | | | | Changed the offset to negative as usual equation is: (raw + offset)*scale and in this case offset should be negative (as we deduct 273.15 Kelvin to get temperature in Celsius). Signed-off-by: Crt Mori <cmo@melexis.com> Acked-by: Peter Meerwald <pmeerw@pmeerw.net> Signed-off-by: Jonathan Cameron <jic23@kernel.org>
* iio: magnetometer: mmc35240: fix SET/RESET sequenceViorel Suman2015-07-191-3/+4
| | | | | | | | | | | The RESET operation invoked in the last instance will align in the natural way all 3 axis and the chip top view. Without this, north and south are swapped. Signed-off-by: Viorel Suman <viorel.suman@intel.com> Signed-off-by: Daniel Baluta <daniel.baluta@intel.com> Signed-off-by: Jonathan Cameron <jic23@kernel.org>
* iio: magnetometer: mmc35240: Fix SET/RESET maskDaniel Baluta2015-07-191-2/+2
| | | | | | | | This fixes setting the SET/RESET bit in the REG_CTRL0 register. Signed-off-by: Daniel Baluta <daniel.baluta@intel.com> Signed-off-by: Jonathan Cameron <jic23@kernel.org>
* iio: magnetometer: mmc35240: Fix crash in pm suspendDaniel Baluta2015-07-191-0/+1
| | | | | | | | | | | | | | | | | | | | | We must set i2c client private data at probe in order to correctly retrieve it in pm suspend/resume, preventing the following crash: [ 321.790582] PM: Syncing filesystems ... done. [ 322.364440] PM: Preparing system for mem sleep [ 322.400047] PM: Entering mem sleep [ 322.462178] BUG: unable to handle kernel NULL pointer dereference at 0000036c [ 322.469119] IP: [<80e0b3d2>] mmc35240_suspend+0x12/0x30 [ 322.474291] *pdpt = 000000002fd6f001 *pde = 0000000000000000 [ 322.479967] Oops: 0000 1 PREEMPT SMP [ 322.496516] task: a86d0df0 ti: a8766000 task.ti: a8766000 [ 322.570744] Call Trace: [ 322.573217] [<80c0d2d1>] pm_generic_suspend+0x21/0x30 [ 322.578284] [<80d042ab>] i2c_device_pm_suspend+0x1b/0x30 Signed-off-by: Daniel Baluta <daniel.baluta@intel.com> Signed-off-by: Jonathan Cameron <jic23@kernel.org>
* iio:magnetometer:bmc150_magn: output intended variableHartmut Knaack2015-07-191-2/+2
| | | | | | | | | | According to the debug/error string, the content of chip_id is supposed to be output, rather than the return value of the previous operation. Fixes: c91746a2361d ("iio: magn: Add support for BMC150 magnetometer") Signed-off-by: Hartmut Knaack <knaack.h@gmx.de> Signed-off-by: Jonathan Cameron <jic23@kernel.org>
* iio:magnetometer:bmc150_magn: add regmap dependencyHartmut Knaack2015-07-191-0/+1
| | | | | | | | | | bmc150_magn makes use of REGMAP_I2C, so select it to build always without errors. Fixes: c91746a2361d ("iio: magn: Add support for BMC150 magnetometer") Signed-off-by: Hartmut Knaack <knaack.h@gmx.de> Signed-off-by: Jonathan Cameron <jic23@kernel.org>
* iio: tmp006: Check channel info on writePeter Meerwald2015-07-191-0/+3
| | | | | | | | | | | | only SAMP_FREQ is writable Will lead to SAMP_FREQ being written by any attempt to write to the other exported attributes and hence a rather unexpected result! Signed-off-by: Peter Meerwald <pmeerw@pmeerw.net> Cc: <Stable@vger.kernel.org> Signed-off-by: Jonathan Cameron <jic23@kernel.org>
* iio: sx9500: Add missing init in sx9500_buffer_pre{en,dis}able()Geert Uytterhoeven2015-07-191-2/+2
| | | | | | | | | | | | | | drivers/iio/proximity/sx9500.c: In function ‘sx9500_buffer_preenable’: drivers/iio/proximity/sx9500.c:682: warning: ‘ret’ may be used uninitialized in this function drivers/iio/proximity/sx9500.c: In function ‘sx9500_buffer_predisable’: drivers/iio/proximity/sx9500.c:706: warning: ‘ret’ may be used uninitialized in this function If active_scan_mask is empty, it will loop once more over all channels, doing nothing. Signed-off-by: Geert Uytterhoeven <geert@linux-m68k.org> Reviewed-by: Vlad Dogaru <vlad.dogaru@intel.com> Signed-off-by: Jonathan Cameron <jic23@kernel.org>
* iio:light:ltr501: fix regmap dependencyHartmut Knaack2015-07-191-0/+1
| | | | | | | | | | | The use of regmap in commit 2f2c96338afc requires REGMAP_I2C to be selected, in order to meet all dependencies. Fixes: 2f2c96338afc ("iio: ltr501: Add regmap support.") Signed-off-by: Hartmut Knaack <knaack.h@gmx.de> Acked-by: Daniel Baluta <daniel.baluta@intel.com> Signed-off-by: Jonathan Cameron <jic23@kernel.org>
* iio:light:ltr501: fix variable in ltr501_initHartmut Knaack2015-07-191-1/+1
| | | | | | | | | | | When filling data->als_contr, the register content read into status needs to be used, instead of the return status value of regmap_read. Fixes: 8592a7eefa540 ("iio: ltr501: Add support for ltr559 chip") Signed-off-by: Hartmut Knaack <knaack.h@gmx.de> Acked-by: Daniel Baluta <daniel.baluta@intel.com> Signed-off-by: Jonathan Cameron <jic23@kernel.org>
* iio: sx9500: fix bug in compensation codeVlad Dogaru2015-07-191-3/+3
| | | | | | | | | | | The initial compensation was mistakingly toggling an extra bit in the control register. Fix this and make sure it's less likely to happen by introducing an additional macro. Reported-by: Hartmut Knaack <knaack.h@gmx.de> Signed-off-by: Vlad Dogaru <vlad.dogaru@intel.com> Acked-by: Hartmut Knaack <knaack.h@gmx.de> Signed-off-by: Jonathan Cameron <jic23@kernel.org>
* iio: sx9500: rework error handling of raw readingsVlad Dogaru2015-07-191-7/+9
| | | | | | | | | | Fix error handling so that we can power the chip down even if a raw read fails. Reported-by: Hartmut Knaack <knaack.h@gmx.de> Signed-off-by: Vlad Dogaru <vlad.dogaru@intel.com> Acked-by: Hartmut Knaack <knaack.h@gmx.de> Signed-off-by: Jonathan Cameron <jic23@kernel.org>
* iio: magnetometer: mmc35240: fix available sampling frequenciesTeodora Baluta2015-07-191-14/+21
| | | | | | | | | | | Fix the sampling frequencies according to the datasheet (page 8). The datasheet specifies the following available frequencies for continuous mode: 1.5 Hz, 13 Hz, 25 Hz, and 50 Hz. Also fix comments about the ODR to comply with datasheet. Signed-off-by: Teodora Baluta <teodora.baluta@intel.com> Signed-off-by: Jonathan Cameron <jic23@kernel.org>
* iio:light:stk3310: Fix REGMAP_I2C dependencyHartmut Knaack2015-07-191-0/+1
| | | | | | | | The stk3310 driver makes use of regmap_i2c, so this dependency needs to be reflected in Kconfig. Signed-off-by: Hartmut Knaack <knaack.h@gmx.de> Signed-off-by: Jonathan Cameron <jic23@kernel.org>
* iio: light: STK3310: un-invert proximity valuesTiberiu Breana2015-07-191-36/+17
| | | | | | | | | | | | | | | | In accordance with the recent proximity ABI changes, STK3310's proximity readings should be un-inversed in order to return low values for far-away objects and high values for close ones. As consequences of this change, iio event directions have been switched and maximum proximity sensor reference values have also been adjusted in accordance with the real readings. Signed-off-by: Tiberiu Breana <tiberiu.a.breana@intel.com> Acked-by: Hartmut Knaack <knaack.h@gmx.de> Signed-off-by: Jonathan Cameron <jic23@kernel.org>
* iio:adc:cc10001_adc: fix Kconfig dependencyHartmut Knaack2015-07-191-2/+1
| | | | | | | | | The Cosmic Circuits 10001 ADC driver depends on HAS_IOMEM, HAVE_CLK and REGULATOR together, not just any of these. Signed-off-by: Hartmut Knaack <knaack.h@gmx.de> Cc: <Stable@vger.kernel.org> Signed-off-by: Jonathan Cameron <jic23@kernel.org>
* iio: light: tcs3414: Fix bug preventing to set integration timePeter Meerwald2015-07-191-1/+1
| | | | | | | | | | the millisecond values in tcs3414_times should be checked against val2, not val, which is always zero. Signed-off-by: Peter Meerwald <pmeerw@pmeerw.net> Reported-by: Stephan Kleisinger <stephan.kleisinger@gmail.com> Cc: <Stable@vger.kernel.org> Signed-off-by: Jonathan Cameron <jic23@kernel.org>
* iio:accel:bmc150-accel: fix counting directionHartmut Knaack2015-07-191-1/+1
| | | | | | | | | | | In bmc150_accel_unregister_triggers() triggers should be unregistered in reverse order of registration. Trigger registration starts with number 0, counting up. In consequence, trigger number needs to be count down here. Signed-off-by: Hartmut Knaack <knaack.h@gmx.de> Reviewed-by: Octavian Purdila <octavian.purdila@intel.com> Cc: <Stable@vger.kernel.org> Signed-off-by: Jonathan Cameron <jic23@kernel.org>
* iio:light:cm3323: clear bitmask before setHartmut Knaack2015-07-191-1/+1
| | | | | | | | | When setting the bits for integration time, the appropriate bitmask needs to be cleared first. Signed-off-by: Hartmut Knaack <knaack.h@gmx.de> Cc: <Stable@vger.kernel.org> Signed-off-by: Jonathan Cameron <jic23@kernel.org>
* iio: adc: at91_adc: allow to use full range of startup timeJan Leupold2015-07-191-4/+4
| | | | | | | | | | | | | | | | The DT-Property "atmel,adc-startup-time" is stored in an u8 for a microsecond value. When trying to increase the value of STARTUP in Register AT91_ADC_MR some higher values can't be reached. Change the type in function parameter and private structure field from u8 to u32. Signed-off-by: Jan Leupold <leupold@rsi-elektrotechnik.de> [nicolas.ferre@atmel.com: change commit message, increase u16 to u32 for startup time] Signed-off-by: Nicolas Ferre <nicolas.ferre@atmel.com> Acked-by: Alexandre Belloni <alexandre.belloni@free-electrons.com> Cc: <Stable@vger.kernel.org> Signed-off-by: Jonathan Cameron <jic23@kernel.org>
* iio: DAC: ad5624r_spi: fix bit shift of output data valueJM Friedt2015-07-191-2/+2
| | | | | | | | | | | | The value sent on the SPI bus is shifted by an erroneous number of bits. The shift value was already computed in the iio_chan_spec structure and hence subtracting this argument to 16 yields an erroneous data position in the SPI stream. Signed-off-by: JM Friedt <jmfriedt@femto-st.fr> Acked-by: Lars-Peter Clausen <lars@metafoo.de> Cc: <Stable@vger.kernel.org> Signed-off-by: Jonathan Cameron <jic23@kernel.org>
* iio: proximity: sx9500: Fix proximity valueDaniel Baluta2015-07-191-1/+1
| | | | | | | | | | Because of the ABI confusion proximity value exposed by SX9500 was inverted. Signed-off-by: Daniel Baluta <daniel.baluta@intel.com> Reviewed-by: Vlad Dogaru <vlad.dogaru@intel.com> Cc: <Stable@vger.kernel.org> Signed-off-by: Jonathan Cameron <jic23@kernel.org>
* iio: inv-mpu: Specify the expected format/precision for write channelsAdriana Reus2015-07-191-0/+18
| | | | | | | | | | | The gyroscope needs IIO_VAL_INT_PLUS_NANO for the scale channel and unless specified write returns MICRO by default. This needs to be properly specified so that write operations into scale have the expected behaviour. Signed-off-by: Adriana Reus <adriana.reus@intel.com> Cc: <Stable@vger.kernel.org> Signed-off-by: Jonathan Cameron <jic23@kernel.org>
* iio: twl4030-madc: Pass the IRQF_ONESHOT flagFabio Estevam2015-07-191-1/+2
| | | | | | | | | | | | | | | Since commit 1c6c69525b40 ("genirq: Reject bogus threaded irq requests") threaded IRQs without a primary handler need to be requested with IRQF_ONESHOT, otherwise the request will fail. So pass the IRQF_ONESHOT flag in this case. The semantic patch that makes this change is available in scripts/coccinelle/misc/irqf_oneshot.cocci. Signed-off-by: Fabio Estevam <fabio.estevam@freescale.com> Cc: <stable@vger.kernel.org> Signed-off-by: Jonathan Cameron <jic23@kernel.org>
* iio: adc: rockchip_saradc: add missing MODULE_* dataHeiko Stuebner2015-07-191-0/+4
| | | | | | | | | | | The module-data is currently missing. This includes the license-information which makes the driver taint the kernel and miss symbols when compiled as module. Fixes: 44d6f2ef94f9 ("iio: adc: add driver for Rockchip saradc") Signed-off-by: Heiko Stuebner <heiko@sntech.de> Cc: <Stable@vger.kernel.org> Signed-off-by: Jonathan Cameron <jic23@kernel.org>
* hid-sensor: Fix suspend/resume delaySrinivas Pandruvada2015-07-191-1/+10
| | | | | | | | | | | | | | | | | | | | | | By default all the sensors are runtime suspended state (lowest power state). During Linux suspend process, all the run time suspended devices are resumed and then suspended. This caused all sensors to power up and introduced delay in suspend time, when we introduced runtime PM for HID sensors. The opposite process happens during resume process. To fix this, we do powerup process of the sensors only when the request is issued from user (raw or tiggerred). In this way when runtime, resume calls for powerup it will simply return as this will not match user requested state. Note this is a regression fix as the increase in suspend / resume times can be substantial (report of 8 seconds on Len's laptop!) Signed-off-by: Srinivas Pandruvada <srinivas.pandruvada@linux.intel.com> Tested-by: Len Brown <len.brown@intel.com> Cc: <Stable@vger.kernel.org> Signed-off-by: Jonathan Cameron <jic23@kernel.org>
* Merge tag 'iio-for-v4.2c' of ↵Greg Kroah-Hartman2015-06-1012-96/+829
|\ | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | git://git.kernel.org/pub/scm/linux/kernel/git/jic23/iio into staging-next Jonathan writes: Third round of new IIO drivers, cleanups and functionality for the 4.2 cycle. Given Linus announced a 4.8rc coming up, hopefully time for one more lot of IIO patches this cycle. Some of these are actually improvements / fixes for patches earlier in the cycle. New device support * st_accel driver - support devices with 8 bit channels. Cleanup * A general cleanup of the iio tools under /tools/ from Hartmut. I'm more than a little embarassed by how bad some of these were! Are well, much more refined and less bug prone now. These cover lots of stuff like unhandled error returns, memory leaks as well as general refactoring to tidy the code up. * iio_simple_dummy - fix memory leaks in the init functions, drop some pointless error returns from functions that never generate errors and make the module parameter explicitly unsigned. * More buffer handling reworks from Lars-Peter, this time targetting hardware buffers (a little used corner that looks likely to get more use in the near future). Specifically: - Always compute the masklength as inkernel buffer users may need it. - Add a means of labeling which buffer modes a given buffer implementation supports. - In the case of hardware buffers, require strict scan matching rather than matching to a superset. Currently the demux is bypassed by these drivers (this may well not change for efficiency reasons) so allowing a superset of channels to be selected would otherwise lead to more data than requested confusing userspace. Driver funcationality improvments * mmc35240 - adds a compensation to the raw values as borrowed form Memsic's own input driver. * mma8452 - event support - event debouncing - high pass filter configuration - triggers * vf610 - allow conversion mode to be adjusted Fixlets * mmc35240 - Off by one error that by coincidence had no real effect. - i2c_device_name should be lowercase. - Lack of null terminator at end of attributes array. - Avoid computing the fractional part of the magnetic field by moving the scaling into userspace where floating point is available to simplify the maths. - Use a smaller sleep before assuming the measurement is done. This is safe and improves the possible polling rate. - Fix sensitivity on z-axis - datasheet disagrees with Memsic's releasedd code and the value used in the code seems to be correct. * stk3310 - make a local variable signed to ensure error handling works. * twl4030 - fix calculation of the temperature sense current - bug unlikely to have ever been noticed as the difference is small. - Fix errors in descriptions.
| * iio: st_accel: support the LIS331DL sensorLinus Walleij2015-06-083-0/+75
| | | | | | | | | | | | | | | | | | This adds support for the LIS331DL sensor version. This is a simple 8bit-only accelerometer. Signed-off-by: Linus Walleij <linus.walleij@linaro.org> Acked-by: Denis Ciocca <denis.ciocca@st.com> Signed-off-by: Jonathan Cameron <jic23@kernel.org>
| * iio: st_accel: support 8bit channel dataLinus Walleij2015-06-072-1/+19
| | | | | | | | | | | | | | | | | | | | | | | | | | Some sensors like the LIS331DL only support 8bit data by a single register per axis. These utilize the MSB byte. Make it possible to register these apropriately. A oneliner change is needed in the ST sensors core to handle 8bit reads as this is the first supported 8bit sensor. Signed-off-by: Linus Walleij <linus.walleij@linaro.org> Acked-by: Denis Ciocca <denis.ciocca@st.com> Signed-off-by: Jonathan Cameron <jic23@kernel.org>
| * iio: adc: vf610: implement configurable conversion modesStefan Agner2015-06-071-42/+104
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Support configurable conversion mode through sysfs. So far, the mode used was low-power, which is enabled by default now. Beside that, the modes normal and high-speed are selectable as well. Use the new device tree property which specifies the maximum ADC conversion clock frequencies. Depending on the mode used, the available resulting conversion frequency are calculated dynamically. Acked-by: Fugang Duan <B38611@freescale.com> Signed-off-by: Stefan Agner <stefan@agner.ch> Signed-off-by: Jonathan Cameron <jic23@kernel.org>
| * iio: adc: twl4030_madc: Fix description of twl4030_madc_set_current_generator()H. Nikolaus Schaller2015-06-071-4/+2
| | | | | | | | | | | | | | | | The @chan parameter can be 0 or 1 and not a bit mask. Fix wrong description. Signed-off-by: H. Nikolaus Schaller <hns@goldelico.com> Signed-off-by: Marek Belisko <marek@goldelico.com> Signed-off-by: Jonathan Cameron <jic23@kernel.org>
| * iio: adc: twl4030_madc: Fix calculation of the temperature sense currentH. Nikolaus Schaller2015-06-071-1/+1
| | | | | | | | | | | | | | | | | | | | | | The bit mask to read the setting of the constant current source for measuring the NTC voltage was the wrong one. Since default value is initialized to the lowest level (000 = 10uA) the difference was probably never noticed in practice. Signed-off-by: H. Nikolaus Schaller <hns@goldelico.com> Signed-off-by: Marek Belisko <marek@goldelico.com> Signed-off-by: Jonathan Cameron <jic23@kernel.org>
| * iio: mma8452: Add support for interrupt driven triggers.Martin Fuzzey2015-06-071-6/+91
| | | | | | | | | | | | | | | | Implement interrupt driven trigger for data ready. This allows more efficient access to the sample data. Signed-off-by: Martin Fuzzey <mfuzzey@parkeon.com> Signed-off-by: Jonathan Cameron <jic23@kernel.org>
| * iio: mma8452: Add highpass filter configuration.Martin Fuzzey2015-06-071-4/+136
| | | | | | | | | | | | | | Allow the cutoff frequency of the high pass filter to be configured. Signed-off-by: Martin Fuzzey <mfuzzey@parkeon.com> Signed-off-by: Jonathan Cameron <jic23@kernel.org>
| * iio: mma8452: Add support for transient event debouncingMartin Fuzzey2015-06-071-11/+65
| | | | | | | | | | | | | | | | Allow the debouce counter for transient events to be configured using the sysfs attribute events/in_accel_thresh_rising_period Signed-off-by: Martin Fuzzey <mfuzzey@parkeon.com> Signed-off-by: Jonathan Cameron <jic23@kernel.org>
| * iio: mma8452: Basic support for transient events.Martin Fuzzey2015-06-071-1/+211
| | | | | | | | | | | | | | | | The event is triggered when the highpass filtered absolute acceleration exceeds the threshold. Signed-off-by: Martin Fuzzey <mfuzzey@parkeon.com> Signed-off-by: Jonathan Cameron <jic23@kernel.org>
| * iio: magnetometer: mmc35240: Add compensation for raw valuesDaniel Baluta2015-06-071-4/+58
| | | | | | | | | | | | | | | | This patch adds compensation formula to raw readings, borrowed from Memsic's input driver. Signed-off-by: Daniel Baluta <daniel.baluta@intel.com> Signed-off-by: Jonathan Cameron <jic23@kernel.org>
| * iio: magnetometer: mmc35240: Fix sensitivity on z-axisDaniel Baluta2015-06-071-1/+1
| | | | | | | | | | | | | | | | | | | | | | | | | | | | Datasheet says (Page 2) that typical value for sensitivity for 16 bits mode on Z-axis is 770. Anyhow, looking at the input driver provided by Memsic the value for MMC35240 is 1024. Also, testing shows that using 1024 for Z-axis senzitivity offers better results. Fixes: abeb6b1e7b ("iio: magnetometer: Add support for MEMSIC MMC35240") Signed-off-by: Daniel Baluta <daniel.baluta@intel.com> Signed-off-by: Jonathan Cameron <jic23@kernel.org>
| * iio: magnetometer: mmc35240: Use a smaller sleep valueDaniel Baluta2015-06-071-1/+2
| | | | | | | | | | | | | | | | | | | | According to datasheet, Page 8, minimum wait time to complete measurement is 10ms. Adjusting this value will increase the userspace polling rate. Fixes: abeb6b1e7b ("iio: magnetometer: Add support for MEMSIC MMC35240") Signed-off-by: Daniel Baluta <daniel.baluta@intel.com> Signed-off-by: Jonathan Cameron <jic23@kernel.org>
| * iio: magnetometer: mmc35240: Fix broken processed valueDaniel Baluta2015-06-071-16/+27
| | | | | | | | | | | | | | | | | | | | | | | | | | | | The current computation for fractional part of the magnetic field is broken. This patch fixes it by taking a different approach. We expose the raw reading in milli Gauss (to avoid rounding errors) with a scale of 0.001. Thus the final computation is done in userspace where floating point operation are more relaxed. Fixes: abeb6b1e7b ("iio: magnetometer: Add support for MEMSIC MMC35240") Signed-off-by: Daniel Baluta <daniel.baluta@intel.com> Signed-off-by: Jonathan Cameron <jic23@kernel.org>
| * iio: magnetometer: mmc35240: NULL terminate attribute arrayDaniel Baluta2015-06-071-0/+1
| | | | | | | | | | | | | | | | This avoid nasty crashes when registering the IIO device. Fixes: abeb6b1e7b ("iio: magnetometer: Add support for MEMSIC MMC35240") Signed-off-by: Daniel Baluta <daniel.baluta@intel.com> Signed-off-by: Jonathan Cameron <jic23@kernel.org>
| * iio: magnetometer: mmc35240: i2c device name should be lower caseDaniel Baluta2015-06-071-1/+1
| | | | | | | | | | | | | | | | | | | | This is the standard convention for i2c device name and also this is the name used in some Intel platforms DT files. Fixes: abeb6b1e7b ("iio: magnetometer: Add support for MEMSIC MMC35240") Signed-off-by: Daniel Baluta <daniel.baluta@intel.com> Signed-off-by: Jonathan Cameron <jic23@kernel.org>
| * iio: light: signedness bug in stk3310_write_raw()Dan Carpenter2015-06-011-1/+1
| | | | | | | | | | | | | | | | "index" needs to be signed for the error handling to work. Fixes: be9e6229d676 ('iio: light: Add support for Sensortek STK3310') Signed-off-by: Dan Carpenter <dan.carpenter@oracle.com> Signed-off-by: Jonathan Cameron <jic23@kernel.org>
| * iio: magnetometer: correct a harmless off by one checkDan Carpenter2015-06-011-1/+1
| | | | | | | | | | | | | | | | | | The line before limits i to 0-3 so the existing code works fine but the check is still off by one and >= is intended instead of >. Signed-off-by: Dan Carpenter <dan.carpenter@oracle.com> Reviewed-by: Daniel Baluta <daniel.baluta@intel.com> Signed-off-by: Jonathan Cameron <jic23@kernel.org>
| * iio: Require strict scan mask matching in hardware modeLars-Peter Clausen2015-06-011-5/+20
| | | | | | | | | | | | | | | | | | | | | | | | | | In hardware mode we can not use the software demuxer, this means that the selected scan mask needs to match one of the available scan masks exactly. It also means that all attached buffers need to use the same scan mask. Given that when operating in hardware mode there is typically only a single buffer attached to the device this not an issue. Add a sanity check to make sure that only a single buffer is attached in hardware mode nevertheless. Signed-off-by: Lars-Peter Clausen <lars@metafoo.de> Signed-off-by: Jonathan Cameron <jic23@kernel.org>
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