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path: root/drivers/iio
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2014-01-09iio:adc:ad7887 Fix channel reported endianness from cpu to big endianJonathan Cameron
commit e39d99059ad7f75d7ae2d3c59055d3c476cdb0d9 upstream. Note this also sets the endianness to big endian whereas it would previously have defaulted to the cpu endian. Hence technically this is a bug fix on LE platforms. Signed-off-by: Jonathan Cameron <jic23@kernel.org> Acked-by: Lars-Peter Clausen <lars@metafoo.de> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2014-01-09iio:imu:adis16400 fix pressure channel scan typeJonathan Cameron
commit 3425c0f7ac61f2fcfb7f2728e9b7ba7e27aec429 upstream. A single channel in this driver was using the IIO_ST macro. This does not provide a parameter for setting the endianness of the channel. Thus this channel will have been reported as whatever is the native endianness of the cpu rather than big endian. This means it would be incorrect on little endian platforms. Signed-off-by: Jonathan Cameron <jic23@kernel.org> Acked-by: Lars-Peter Clausen <lars@metafoo.de> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2013-12-04iio:accel:kxsd9 fix missing mutex unlockFrank Zago
commit 0ee005c7dc2803125275e24598f0fb37775a6af3 upstream. This will leave a lock held after reading from the device, preventing any further reads. Signed-off-by: Frank Zago <frank@zago.net> Signed-off-by: Jonathan Cameron <jic23@kernel.org> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2013-10-15iio:buffer: Free active scan mask in iio_disable_all_buffers()Lars-Peter Clausen
Usually the active scan mask is freed in __iio_update_buffers() when the buffer is disabled. But when the device is still sampling when it is removed we'll end up disabling the buffers in iio_disable_all_buffers(). So we also need to free the active scan mask here, otherwise it will be leaked. Signed-off-by: Lars-Peter Clausen <lars@metafoo.de> Signed-off-by: Jonathan Cameron <jic23@kernel.org>
2013-10-12iio: frequency: adf4350: add missing clk_disable_unprepare() on error in ↵Wei Yongjun
adf4350_probe() Add the missing clk_disable_unprepare() before return from adf4350_probe() in the error handling case. Signed-off-by: Wei Yongjun <yongjun_wei@trendmicro.com.cn> Reviewed-by: Lars-Peter CLausen <lars@metafoo.de> Signed-off-by: Jonathan Cameron <jic23@kernel.org>
2013-09-30iio:magnetometer: Bugfix magnetometer default output registersDenis CIOCCA
Signed-off-by: Denis Ciocca <denis.ciocca@st.com> Signed-off-by: Jonathan Cameron <jic23@kernel.org>
2013-09-30iio: Remove debugfs entries in iio_device_unregister()Lars-Peter Clausen
Remove the the debugfs entries in iio_device_unregister(). Otherwise the debugfs entries might still be accessible even though the device used in the debugfs callback has already been freed. Signed-off-by: Lars-Peter Clausen <lars@metafoo.de> Signed-off-by: Jonathan Cameron <jic23@kernel.org>
2013-09-28iio: amplifiers: ad8366: Remove regulator_putSachin Kamat
Since devm_regulator_get is used, regulator_put should not be used. Remove it. Signed-off-by: Sachin Kamat <sachin.kamat@linaro.org> Signed-off-by: Jonathan Cameron <jic23@kernel.org>
2013-09-21iio:buffer_cb: Add missing iio_buffer_init()Lars-Peter Clausen
Make sure to properly initialize the IIO buffer data structure. Signed-off-by: Lars-Peter Clausen <lars@metafoo.de> Signed-off-by: Jonathan Cameron <jic23@kernel.org>
2013-09-21iio: Prevent race between IIO chardev opening and IIO device freeLars-Peter Clausen
Set the IIO device as the parent for the character device We need to make sure that the IIO device is not freed while the character device exists, otherwise the freeing of the IIO device might race against the file open callback. Do this by setting the character device's parent to the IIO device, this will cause the character device to grab a reference to the IIO device and only release it once the character device itself has been removed. Also move the registration of the character device before the registration of the IIO device to avoid the (rather theoretical case) that the IIO device is already freed again before we can add the character device and grab a reference to the IIO device. We also need to move the call to cdev_del() from iio_dev_release() to iio_device_unregister() (where it should have been in the first place anyway) to avoid a reference cycle. As iio_dev_release() is only called once all reference are dropped, but the character device holds a reference to the IIO device. Signed-off-by: Lars-Peter Clausen <lars@metafoo.de> Signed-off-by: Jonathan Cameron <jic23@kernel.org>
2013-09-21iio: fix: Keep a reference to the IIO device for open file descriptorsLars-Peter Clausen
Make sure that the IIO device is not freed while we still have file descriptors for it. Signed-off-by: Lars-Peter Clausen <lars@metafoo.de> Signed-off-by: Jonathan Cameron <jic23@kernel.org>
2013-09-21iio: Stop sampling when the device is removedLars-Peter Clausen
Make sure to stop sampling when the device is removed, otherwise it will continue to sample forever. Signed-off-by: Lars-Peter Clausen <lars@metafoo.de> Signed-off-by: Jonathan Cameron <jic23@kernel.org>
2013-09-21iio: Fix crash when scan_bytes is computed with active_scan_mask == NULLPeter Meerwald
if device has available_scan_masks set and the buffer is enabled without any scan_elements enabled, in a NULL pointer is dereferenced in iio_compute_scan_bytes() [ 18.993713] Unable to handle kernel NULL pointer dereference at virtual address 00000000 [ 19.002593] pgd = debd4000 [ 19.005432] [00000000] *pgd=9ebc0831, *pte=00000000, *ppte=00000000 [ 19.012329] Internal error: Oops: 17 [#1] PREEMPT ARM [ 19.017639] Modules linked in: [ 19.020843] CPU: 0 Not tainted (3.9.11-00036-g75c888a-dirty #207) [ 19.027587] PC is at _find_first_bit_le+0xc/0x2c [ 19.032440] LR is at iio_compute_scan_bytes+0x2c/0xf4 [ 19.037719] pc : [<c021dc60>] lr : [<c03198d0>] psr: 200d0013 [ 19.037719] sp : debd9ed0 ip : 00000000 fp : 000802bc [ 19.049713] r10: 00000000 r9 : 00000000 r8 : deb67250 [ 19.055206] r7 : 00000000 r6 : 00000000 r5 : 00000000 r4 : deb67000 [ 19.062011] r3 : de96ec00 r2 : 00000000 r1 : 00000004 r0 : 00000000 [ 19.068847] Flags: nzCv IRQs on FIQs on Mode SVC_32 ISA ARM Segment user [ 19.076324] Control: 10c5387d Table: 9ebd4019 DAC: 00000015 problem is the rollback code in iio_update_buffers(), old_mask may be NULL (e.g. on first call) I'm not too confident about the fix; works for me... Signed-off-by: Peter Meerwald <pmeerw@pmeerw.net> Reviewed-by: Lars-Peter Clausen <lars@metafoo.de> Signed-off-by: Jonathan Cameron <jic23@kernel.org>
2013-09-21iio: Fix mcp4725 dev-to-indio_dev conversion in suspend/resumePeter Meerwald
dev_to_iio_dev() is a false friend Signed-off-by: Peter Meerwald <pmeerw@pmeerw.net> Signed-off-by: Jonathan Cameron <jic23@kernel.org>
2013-09-21iio: Fix bma180 dev-to-indio_dev conversion in suspend/resumePeter Meerwald
dev_to_iio_dev() is a false friend Signed-off-by: Peter Meerwald <pmeerw@pmeerw.net> Cc: Oleksandr Kravchenko <o.v.kravchenko@globallogic.com> Signed-off-by: Jonathan Cameron <jic23@kernel.org>
2013-09-21iio: Fix tmp006 dev-to-indio_dev conversion in suspend/resumePeter Meerwald
dev_to_iio_dev() is a false friend Signed-off-by: Peter Meerwald <pmeerw@pmeerw.net> Signed-off-by: Jonathan Cameron <jic23@kernel.org>
2013-09-18iio: iio_device_add_event_sysfs() bugfixLukasz Czerwinski
Fix mask generation for modified channels. Signed-off-by: Lukasz Czerwinski <l.czerwinski@samsung.com> Signed-off-by: Jonathan Cameron <jic23@kernel.org>
2013-09-18iio: at91: fix adc_clk overflowJosh Wu
The adc_clk variable is currently defined using a 32-bits unsigned integer, which will overflow under some very valid range of operations. Such overflow will occur if, for example, the parent clock is set to a 20MHz frequency and the ADC startup time is larger than 215ns. To fix this, introduce an intermediate variable holding the clock rate in kHz. Signed-off-by: Josh Wu <josh.wu@atmel.com> Acked-by: Maxime Ripard <maxime.ripard@free-electrons.com> Signed-off-by: Jonathan Cameron <jic23@kernel.org>
2013-09-13Remove GENERIC_HARDIRQ config optionMartin Schwidefsky
After the last architecture switched to generic hard irqs the config options HAVE_GENERIC_HARDIRQS & GENERIC_HARDIRQS and the related code for !CONFIG_GENERIC_HARDIRQS can be removed. Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
2013-09-03Merge tag 'staging-3.12-rc1' of ↵Linus Torvalds
git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/staging Pull staging tree merge from Greg KH: "Here's the bit staging tree pull request for 3.12-rc1. Lots of staging driver updates, and fixes. Lustre is finally enabled in the build, and lots of cleanup started happening in it. There's a new wireless driver in here, and 2 new TTY drivers, which cause the overall lines added/removed to be quite large on the "added" side. The IIO driver updates are also coming through here, as they are tied to the staging iio drivers" * tag 'staging-3.12-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/staging: (942 commits) staging: dwc2: make dwc2_core_params documentation more complete staging: dwc2: validate the value for phy_utmi_width staging: dwc2: interpret all hwcfg and related register at init time staging: dwc2: properly mask the GRXFSIZ register staging: dwc2: remove redundant register reads staging: dwc2: re-use hptxfsiz variable staging: dwc2: simplify debug output in dwc_hc_init staging: dwc2: add missing shift staging: dwc2: simplify register shift expressions staging: dwc2: only read the snpsid register once staging: dwc2: unshift non-bool register value constants staging: dwc2: fix off-by-one in check for max_packet_count parameter staging: dwc2: remove specific fifo size constants Staging:BCM:DDRInit.c:Renaming __FUNCTION__ staging: bcm: remove Version.h file. staging: rtl8188eu: off by one in rtw_set_802_11_add_wep() staging: r8188eu: copying one byte too much staging: rtl8188eu: || vs && typo staging: r8188eu: off by one bugs staging: crystalhd: Resolve sparse 'different base types' warnings. ...
2013-08-29iio: at91: Use different prescal, startup mask in MR for different IPJosh Wu
For at91 boards, there are different IPs for adc. Different IPs has different STARTUP & PRESCAL mask in ADC_MR. Signed-off-by: Josh Wu <josh.wu@atmel.com> Acked-by: Maxime Ripard <maxime.ripard@free-electrons.com> Signed-off-by: Jonathan Cameron <jic23@kernel.org>
2013-08-29iio: at91: introduce the multiple compatible string for different IPs.Josh Wu
As use the multiple compatible string, we can remove hardware register in dt. CC: devicetree@vger.kernel.org Signed-off-by: Josh Wu <josh.wu@atmel.com> Acked-by: Maxime Ripard <maxime.ripard@free-electrons.com> Signed-off-by: Jonathan Cameron <jic23@kernel.org>
2013-08-28iio: adc: twl6030-gpadc: fix error return code in twl6030_gpadc_read_raw()Wei Yongjun
Fix to return -EINTR in the error handling case instead of 0 (ret is assigned after goto, which has no effect), as done elsewhere in this function. Signed-off-by: Wei Yongjun <yongjun_wei@trendmicro.com.cn> Reported-by: Dan Carpenter <dan.carpenter@oracle.com> Signed-off-by: Jonathan Cameron <jic23@kernel.org>
2013-08-28iio: add Bosch BMA180 acceleration sensor driverOleksandr Kravchenko
This patch adds IIO driver for Bosch BMA180 triaxial acceleration sensor. http://dlnmh9ip6v2uc.cloudfront.net/datasheets/ Sensors/Accelerometers/BST-BMA180-DS000-07_2.pdf Signed-off-by: Oleksandr Kravchenko <o.v.kravchenko@globallogic.com> Acked-by: Stephen Warren <swarren@nvidia.com> Signed-off-by: Jonathan Cameron <jic23@kernel.org>
2013-08-19iio: dac: max517: Use devm_iio_device_allocSachin Kamat
Using devm_iio_device_alloc makes code simpler. Signed-off-by: Sachin Kamat <sachin.kamat@linaro.org> Cc: Roland Stigge <stigge@antcom.de> Signed-off-by: Jonathan Cameron <jic23@kernel.org>
2013-08-19iio: dac: ad7303: Use devm_* APIsSachin Kamat
devm_* APIs are device managed and make code simpler. Signed-off-by: Sachin Kamat <sachin.kamat@linaro.org> Signed-off-by: Jonathan Cameron <jic23@kernel.org>
2013-08-19iio: dac: ad5791: Use devm_* APIsSachin Kamat
devm_* APIs are device managed and make code simpler. Signed-off-by: Sachin Kamat <sachin.kamat@linaro.org> Signed-off-by: Jonathan Cameron <jic23@kernel.org>
2013-08-19iio: dac: ad5764: Use devm_* APIsSachin Kamat
devm_* APIs are device managed and make code simpler. Signed-off-by: Sachin Kamat <sachin.kamat@linaro.org> Signed-off-by: Jonathan Cameron <jic23@kernel.org>
2013-08-19iio: dac: ad5755: Use devm_iio_device_allocSachin Kamat
Using devm_iio_device_alloc makes code simpler. Signed-off-by: Sachin Kamat <sachin.kamat@linaro.org> Signed-off-by: Jonathan Cameron <jic23@kernel.org>
2013-08-19iio: dac: ad5686: Use devm_* APIsSachin Kamat
devm_* APIs are device managed and make code simpler. Signed-off-by: Sachin Kamat <sachin.kamat@linaro.org> Signed-off-by: Jonathan Cameron <jic23@kernel.org>
2013-08-19iio: dac: ad5624r_spi: Use devm_* APIsSachin Kamat
devm_* APIs are device managed and make code simpler. Signed-off-by: Sachin Kamat <sachin.kamat@linaro.org> Signed-off-by: Jonathan Cameron <jic23@kernel.org>
2013-08-19iio: dac: ad5504: Use devm_* APIsSachin Kamat
devm_* APIs are device managed and make code simpler. Signed-off-by: Sachin Kamat <sachin.kamat@linaro.org> Signed-off-by: Jonathan Cameron <jic23@kernel.org>
2013-08-19iio: dac: ad5449: Use devm_* APIsSachin Kamat
devm_* APIs are device managed and make code simpler. Signed-off-by: Sachin Kamat <sachin.kamat@linaro.org> Signed-off-by: Jonathan Cameron <jic23@kernel.org>
2013-08-19iio: dac: ad5446: Use devm_* APIsSachin Kamat
devm_* APIs are device managed and make code simpler. Signed-off-by: Sachin Kamat <sachin.kamat@linaro.org> Signed-off-by: Jonathan Cameron <jic23@kernel.org>
2013-08-19iio: dac: ad5421: Use devm_* APIsSachin Kamat
devm_* APIs are device managed and make code simpler. Signed-off-by: Sachin Kamat <sachin.kamat@linaro.org> Signed-off-by: Jonathan Cameron <jic23@kernel.org>
2013-08-19iio: dac: ad5380: Use devm_* APIsSachin Kamat
devm_* APIs are device managed and make code simpler. Signed-off-by: Sachin Kamat <sachin.kamat@linaro.org> Signed-off-by: Jonathan Cameron <jic23@kernel.org>
2013-08-19iio: dac: ad5360: Use devm_* APIsSachin Kamat
devm_* APIs are device managed and make code simpler. Signed-off-by: Sachin Kamat <sachin.kamat@linaro.org> Signed-off-by: Jonathan Cameron <jic23@kernel.org>
2013-08-19iio: dac: ad5064: Use devm_* APIsSachin Kamat
devm_* APIs are device managed and make code simpler. Signed-off-by: Sachin Kamat <sachin.kamat@linaro.org> Signed-off-by: Jonathan Cameron <jic23@kernel.org>
2013-08-19iio: adc: twl6030-gpadc: Use devm_* API familyOleksandr Kozaruk
Using devm_iio_device_alloc and devm_request_threaded_irq makes code simpler. Signed-off-by: Oleksandr Kozaruk <oleksandr.kozaruk@ti.com> Signed-off-by: Jonathan Cameron <jic23@kernel.org>
2013-08-19iio: adjd_s311: Cleanup unused #definesPeter Meerwald
using word reads, no need for HI/LO register #defines Signed-off-by: Peter Meerwald <pmeerw@pmeerw.net> Signed-off-by: Jonathan Cameron <jic23@kernel.org>
2013-08-19iio: Remove unnecessary _write_raw_get_fmt() in several hid-sensor driversPeter Meerwald
IIO_VAL_INT_PLUS_MICRO is the default, no need to return it explicitly Signed-off-by: Peter Meerwald <pmeerw@pmeerw.net> Acked-by: srinivas pandruvada <srinivas.pandruvada@intel.com> Signed-off-by: Jonathan Cameron <jic23@kernel.org>
2013-08-19iio: adjd_s311: Fix non-scan mode data readPeter Meerwald
forgot to convert channel index to data register Signed-off-by: Peter Meerwald <pmeerw@pmeerw.net> Signed-off-by: Jonathan Cameron <jic23@kernel.org>
2013-08-17iio: trigger: implement devm_iio_trigger_alloc/devm_iio_triger_freeJacek Anaszewski
Add a resource managed devm_iio_trigger_alloc()/devm_iio_triger_free() to automatically clean up triggers allocated by IIO drivers, thus leading to simplified IIO drivers code. Signed-off-by: Jacek Anaszewski <j.anaszewski@samsung.com> Signed-off-by: Kyunmin Park <kyungmin.park@samsung.com> Signed-off-by: Jonathan Cameron <jic23@kernel.org>
2013-08-17iio: twl6030-gpadc: TWL6030, TWL6032 GPADC driverOleksandr Kozaruk
The GPADC is general purpose ADC found on TWL6030, and TWL6032 PMIC, known also as Phoenix and PhoenixLite. The TWL6030 and TWL6032 have GPADC with 17 and 19 channels respectively. Some channels have current source and are used for measuring voltage drop on resistive load for detecting battery ID resistance, or measuring voltage drop on NTC resistors for external temperature measurements. Some channels measure voltage, (i.e. battery voltage), and have voltage dividers, thus, capable to scale voltage. Some channels are dedicated for measuring die temperature. Some channels are calibrated in 2 points, having offsets from ideal values kept in trim registers. This is used to correct measurements. The differences between GPADC in TWL6030 and TWL6032: - 10 bit vs 12 bit ADC; - 17 vs 19 channels; - channels have different purpose(i.e. battery voltage channel 8 vs channel 18); - trim values are interpreted differently. Based on the driver patched from Balaji TK, Graeme Gregory, Ambresh K, Girish S Ghongdemath. Signed-off-by: Balaji T K <balajitk@ti.com> Signed-off-by: Graeme Gregory <gg@slimlogic.co.uk> Signed-off-by: Oleksandr Kozaruk <oleksandr.kozaruk@ti.com> Signed-off-by: Jonathan Cameron <jic23@kernel.org>
2013-08-17iio: gyro: st_gyro: Use devm_iio_device_allocSachin Kamat
Using devm_iio_device_alloc makes code simpler. Signed-off-by: Sachin Kamat <sachin.kamat@linaro.org> Cc: Denis Ciocca <denis.ciocca@st.com> Signed-off-by: Jonathan Cameron <jic23@kernel.org>
2013-08-17iio: gyro: itg3200_core: Use devm_iio_device_allocSachin Kamat
Using devm_iio_device_alloc makes code simpler. Signed-off-by: Sachin Kamat <sachin.kamat@linaro.org> Cc: Christian Strobel <christian.strobel@iis.fraunhofer.de> Signed-off-by: Jonathan Cameron <jic23@kernel.org>
2013-08-17iio: gyro: adxrs450: Use devm_iio_device_allocSachin Kamat
Using devm_iio_device_alloc makes code simpler. Signed-off-by: Sachin Kamat <sachin.kamat@linaro.org> Signed-off-by: Jonathan Cameron <jic23@kernel.org>
2013-08-17iio: hid-sensor-gyro-3d: Use devm_iio_device_allocSachin Kamat
Using devm_iio_device_alloc makes code simpler. Signed-off-by: Sachin Kamat <sachin.kamat@linaro.org> Cc: Srinivas Pandruvada <srinivas.pandruvada@intel.com> Signed-off-by: Jonathan Cameron <jic23@kernel.org>
2013-08-17iio: gyro: adis16260: Use devm_iio_device_allocSachin Kamat
Using devm_iio_device_alloc makes code simpler. Signed-off-by: Sachin Kamat <sachin.kamat@linaro.org> Acked-by: Lars-Peter Clausen <lars@metafoo.de> Signed-off-by: Jonathan Cameron <jic23@kernel.org>
2013-08-17iio: gyro: adis16136: Use devm_iio_device_allocSachin Kamat
Using devm_iio_device_alloc makes code simpler. Signed-off-by: Sachin Kamat <sachin.kamat@linaro.org> Cc: Lars-Peter Clausen <lars@metafoo.de> Signed-off-by: Jonathan Cameron <jic23@kernel.org>
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