- 14 Apr, 2017 5 commits
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Narcisa Ana Maria Vasile authored
This device operates in DIRECT_MODE and BUFFER_HARDWARE mode. Replace usages of iio_dev->mlock with iio_device_{claim|release}_direct_mode() helper functions to guarantee DIRECT mode and consequently protect BUFFER mode too. Add and use a device private lock to protect against conflicting access of the state data. This helps with IIO subsystem redefining iio_dev->mlock to be used by the IIO core only for protecting device operating mode changes. ie. Changes between INDIO_DIRECT_MODE, INDIO_BUFFER_* modes. Protect changing of attributes inside ad5933_store(). Attributes can no longer be changed while in buffered mode. Remove lock from ad5933_work() because buffer mode should be enabled when we reach this, and claiming DIRECT mode in all the other places should protect it. Signed-off-by:Narcisa Ana Maria Vasile <narcisaanamaria12@gmail.com> Signed-off-by:
Jonathan Cameron <jic23@kernel.org>
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Akinobu Mita authored
This adds max1117/max1118/max1119 8-bit, dual-channel ADC driver. This new driver uses the zero length spi_transfers with the cs_change flag set and/or the non-zero delay_usecs. 1. The zero length transfer with the spi_transfer.cs_change set is required in order to select CH1. The chip select line must be brought high and low again without transfer. 2. The zero length transfer with the spi_transfer.delay_usecs > 0 is required for waiting the conversion to be complete. The conversion begins with the falling edge of the chip select. During the conversion process, SCLK is ignored. These two usages are unusual. But the spi controller drivers that use a default implementation of transfer_one_message() are likely to work. (I've tested this adc driver with spi-omap2-mcspi and spi-xilinx) On the other hand, some spi controller drivers that have their own transfer_one_message() may not work. But at least for the zero length transfer with delay_usecs > 0, I'm proposing a new testcase for the spi-loopback-test that can test whether the delay_usecs setting has taken effect. Acked-by:
Rob Herring <robh@kernel.org> Signed-off-by:
Akinobu Mita <akinobu.mita@gmail.com> Cc: Jonathan Cameron <jic23@kernel.org> Cc: Hartmut Knaack <knaack.h@gmx.de> Cc: Lars-Peter Clausen <lars@metafoo.de> Cc: Peter Meerwald-Stadler <pmeerw@pmeerw.net> Cc: Rob Herring <robh+dt@kernel.org> Cc: Mark Rutland <mark.rutland@arm.com> Cc: Mark Brown <broonie@kernel.org> Signed-off-by:
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Chen Guanqiao authored
Removing use of deprecated macros(S_IRUGO, S_IWUSR, S_IXUGO), and replace with 4 digit octal. Signed-off-by:
Chen Guanqiao <chen.chenchacha@foxmail.com> Signed-off-by:
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Benjamin Gaignard authored
Device counting could be controlled by the level or the edges of a trigger. in_count0_enable_mode attibute allow to set the control mode. Signed-off-by:
Benjamin Gaignard <benjamin.gaignard@st.com> Signed-off-by:
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Benjamin Gaignard authored
One of the features of STM32 trigger hardware block is a quadrature encoder that can counts up/down depending of the levels and edges of the selected external pins. This patch allow to read/write the counter, get it direction, set/get quadrature modes and get scale factor. When counting up preset value is the limit of the counter. When counting down the counter start from preset value down to 0. This preset value could be set/get by using /sys/bus/iio/devices/iio:deviceX/in_count0_preset attribute. Signed-off-by:
William Breathitt Gray <vilhelm.gray@gmail.com> Signed-off-by:
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- 08 Apr, 2017 10 commits
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Lorenzo Bianconi authored
Use the correct chip name (e.g. lsm6dsm) as suffix for iio_dev name instead of a generic one (lsm6dsx) Signed-off-by:
Lorenzo Bianconi <lorenzo.bianconi@st.com> Signed-off-by:
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Linus Walleij authored
The Qualcomm PM8xxx PMICs contain a simpler ADC than its successors (already in the kernel as qcom-spmi-vadc.c): the HK/XO ADC (Housekeeping/Chrystal oscillator ADC). As far as I can understand this is equal to the PMICs using SSBI transport and encompass PM8018, PM8038, PM8058, and PM8921, so this is shortly named PM8xxx. This ADC monitors a bunch of on-board voltages and the die temperature of the PMIC itself, but it can also be routed to convert a few external MPPs (multi-purpose pins). On the APQ8060 DragonBoard this feature is used to let this ADC convert an analog ALS (Ambient Light Sensor) voltage signal from a Capella CM3605 ALS into a LUX value. Developed and tested with APQ8060 DragonBoard based on Ivan's driver and Rama Krishna's patches. The SPMI VADC driver is quite different, but share enough minor functionality that I have split out to the common file in a previous patch. Cc: linux-arm-kernel@lists.infradead.org Cc: linux-arm-msm@vger.kernel.org Cc: Ivan T. Ivanov <iivanov.xz@gmail.com> Cc: Andy Gross <andy.gross@linaro.org> Cc: Bjorn Andersson <bjorn.andersson@linaro.org> Cc: Stephen Boyd <sboyd@codeaurora.org> Cc: Srinivas Kandagatla <srinivas.kandagatla@linaro.org> Cc: Rama Krishna Phani A <rphani@codeaurora.org> Signed-off-by:
Linus Walleij <linus.walleij@linaro.org> Signed-off-by:
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Linus Walleij authored
The SPMI VADC and the earlier XOADC share a subset of common code, so to be able to use the same code in both drivers, we break out a separate file with the common code, prefix exported functions that are no longer static with qcom_* and bake an object qcom-spmi-vadc.o that contains both files: qcom-vadc-common.o and qcom-spmi-vadc-core.o. As we need to follow the procedure for making a kernel module or compiled in object from several files, but still want to produce the same module name, rename the qcom-spmi-vadc.c file to qcom-spmi-vadc-core.c so we can bake the two objects into qcom-spmi-vadc.o Cc: linux-arm-kernel@lists.infradead.org Cc: linux-arm-msm@vger.kernel.org Cc: Ivan T. Ivanov <iivanov.xz@gmail.com> Cc: Andy Gross <andy.gross@linaro.org> Cc: Bjorn Andersson <bjorn.andersson@linaro.org> Cc: Stephen Boyd <sboyd@codeaurora.org> Cc: Srinivas Kandagatla <srinivas.kandagatla@linaro.org> Cc: Rama Krishna Phani A <rphani@codeaurora.org> Signed-off-by:
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Linus Walleij authored
In order to accommodate in a logical manner for the premuxed channels in PM8921 and the similarly addressed channels in later PMICs, we need a twocell arrangement with premux and analog mux setting as a tuple to uniquely identify a hardware channel. These bindings are not yet in use, so it should be fine to augment them before we actually start using it in drivers and device trees. This scheme came out of lengthy discussions and reverse-engineering and reading of the few information sources we have. Cc: devicetree@vger.kernel.org Acked-by:
Rob Herring <robh+dt@kernel.org> Suggested-by:
Björn Andersson <bjorn.andersson@linaro.org> Signed-off-by:
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Quentin Schulz authored
This adds support for the Allwinner A33 thermal sensor. Unlike the A10, A13 and A31, the Allwinner A33 only has one channel which is dedicated to the thermal sensor. Moreover, its thermal sensor does not generate interruptions, thus we only need to directly read the register storing the temperature value. The MFD used by the A10, A13 and A31, was created to avoid breaking the DT binding, but since the nodes for the ADC weren't there for the A33, it is not needed. Though the A33 does not have an internal ADC, it has a thermal sensor which shares the same registers with GPADC of the already supported SoCs and almost the same bits, for the same purpose (thermal sensor). The thermal sensor behaves exactly the same (except the presence of interrupts or not) on the different SoCs. Signed-off-by:
Quentin Schulz <quentin.schulz@free-electrons.com> Acked-by:
Lee Jones <lee.jones@linaro.org> Signed-off-by:
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Quentin Schulz authored
This moves code used in MFD probing to a new sun4i_gpadc_probe_mfd function. This driver was initially written for A10, A13 and A31 SoCs which already had a DT binding for this IP, thus we needed to use an MFD to probe the different drivers without changing the DT binding of these SoCs. For SoCs that will require to create a DT binding for this IP, we can avoid using an MFD, thus we need two separate functions: one for probing via MFD and one for probing without MFD. This split the code specific to MFD probing in a function separated from the driver probe function. Signed-off-by:
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Jacopo Mondi authored
Add iio driver for Maxim max9611 and max9612 current-sense amplifiers with 12-bits ADC interface. Datasheet publicly available at: https://datasheets.maximintegrated.com/en/ds/MAX9611-MAX9612.pdfSigned-off-by:
Jacopo Mondi <jacopo+renesas@jmondi.org> Signed-off-by:
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Jacopo Mondi authored
Add documentation for max9611 driver. Document attributes describing value of shunt resistor installed between RS+ and RS- voltage sense inputs. Signed-off-by:
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Jacopo Mondi authored
Add device tree bindings documentation for Maxim max9611/max9612 current sense amplifier. Signed-off-by:
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Srinivas Pandruvada authored
When a hid sensor module is removed and modprobed again we see error for unbalanced pm_runtime. This issue is caused by not deactivating runtime PM on removal. So on modprobe again when activated again, this will print this error. Signed-off-by:
Srinivas Pandruvada <srinivas.pandruvada@linux.intel.com> Signed-off-by:
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- 03 Apr, 2017 4 commits
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Fabrice Gasnier authored
stm32 adc supports several resolution. Add 'assigned-resolution-bits' dt optional property to set it. Default to maximum resolution in case it isn't set. Signed-off-by:
Fabrice Gasnier <fabrice.gasnier@st.com> Signed-off-by:
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Fabrice Gasnier authored
Add documentation for 'assigned-resolution-bits' dt optional property. Signed-off-by:
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Peter Rosin authored
i2c_mux_add_adapter already logs a message on failure. Signed-off-by:
Peter Rosin <peda@axentia.se> Reviewed-by:
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Greg Kroah-Hartman authored
Merge tag 'iio-for-4.12c' of git://git.kernel.org/pub/scm/linux/kernel/git/jic23/iio into staging-next Third set of new device support, cleanups and features for IIO in the 4.12 cycle Somewhat dominated in patch numbers of last of the outreachy application window related patches (they are still coming, despite window being closed which is good to see!) Good set of new drivers as well. New device support * ASPEED ADC - new driver * cpcap PMIC ADC - new driver * hid-humidity - driver for HID compatible humidity sensors. * ltc2497 ADC - new driver * mpu6050 - bring bindings up to date and add trivial support for 9250 * rockchip-saradc - update bindings to cover rk3328 * vl6180 light, proximity and time of flight sensor. - new driver Features * meson-saradc - add calibration Cleanup and minor fixes * ad5504 - constify attribute_group structure - drop casting of void * * ad7150 - replace some shifts of 1 by BIT macro usage * ad7152 - blank lines between function definitions * ad7280a - octal permissions. * ad7606 - replace use of core mlock mutex with a local lock * ad7746 - replace some shifts of 1 by BIT macro usage - function parameter alignment - drop some excessive brackets (introduced in last pull request) * ad7753 - white space cleanup * ad7754 - includes in alphabetical order and groupped appropriately. - change from missuse of internal mlock mutex to using the buffer lock to also protect values during frequency update. * ad779x - constify attribute_group structures * ad9832 - octal permissions * adis16060 - remove use of core mlock mutex in favour of adding a local _spi_write_then_read which can use the local buffer protection lock. - fix naming of above function. * adis16203 - remove locking during reads of calibbias that doesn't protect anything not protected elsewhere. * adis16209 - remove unnecessary braces in single statement if * adis16240 - remove unnecessary braces in single statement if * adt7136 - drop excess blank lines and put some in between functions. * ams-iaq - replace comma with semi colon. Not actual bug, just unusual syntax. * apds9960 - constify attribute group structure * as3935 - constify attribute group structure * bm1750 - constify attribute group structure * cros_ec - devm version of triggered buffer setup to simplify code. * exynos - drop casting of void * * hdc100x - constify attribute_group structure * hid-accel - fix wrong scale for newly introduced gravity sensor. * hts221 - drop casting of void * * hx711 - constify attribute_group structure * imx7d_adc - drop casting of void * * lm35333 - constify attribute_group structure * lsm6dsx - drop casting of void * - hold ODR configuration until enabling to avoid a race condition. * max1027 - drop casting of void * * max11100 - fix a comma where semicolon was intended (no actual bug, just odd) * max1363 - constify attribute_group structure * ms sensors - drop casting of void * * rockchip_saradc - drop casting of void * * sun4i-gpadc - fix missing dependency on THERMAL or presence of stubs (issue only introduced in pervious set) - drop casting of void * * tsl2x7x - fix wrong standard deviation calc. Note these aren't actually used for anything at the moment so bug didn't really matter. - constify attribute group structure. * vf610adc - drop casting of void * * vz89x - replace comma with semicolon. Not actual bug, just odd syntax. * zpa2326 - drop casting of void *
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- 02 Apr, 2017 15 commits
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Lorenzo Bianconi authored
This patch allows to avoid a transitory that occurs when a given sensor has been already enabled (e.g. gyroscope) and the user is configuring the sample frequency of the other one (e.g. accelerometer). The transitory lasts until the accelerometer is enabled. During that time slice the gyroscope ODR is incorrectly modified as well. At the end of the transitory both sensors work at the right frequency. Fix it introducing st_lsm6dsx_check_odr() routine to check ODR consistency in write_raw handler in order to apply frequency configuration just in st_lsm6dsx_set_odr() Fixes: 290a6ce1 (iio: imu: add support to lsm6dsx driver) Signed-off-by:
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Arnd Bergmann authored
With CONFIG_THERMAL=m and CONFIG_SUN4I_GPADC=y, we get a link error from calling devm_thermal_zone_of_sensor_register: drivers/iio/built-in.o: In function `sun4i_gpadc_probe': :(.text+0x1c284): undefined reference to `devm_thermal_zone_of_sensor_register' This adds a Kconfig dependency to ensure we can only have the ADC driver as built-in when this function is also built-in, or when we see the empty stub implementation. When the thermal code is a module, we can still build the adc driver as a module, too. Signed-off-by:
Arnd Bergmann <arnd@arndb.de> Fixes: d1caa990 ("iio: adc: add support for Allwinner SoCs ADC") Signed-off-by:
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Michael Hennerich authored
This patch adds support for the Analog Devices / Linear Technology LTC2497 ADCs. The LTC2497 is a 16-channel (eight differential), 16-bit, high precision, delta-sigma ADC with an automatic, differential, input current cancellation front end and a 2-wire, I2C interface. Signed-off-by:
Michael Hennerich <michael.hennerich@analog.com> Signed-off-by:
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Guru Das Srinagesh authored
This fixes the coding style issue of using S_IWUSR in place of 4-digit octal numbers. Issue detected by checkpatch. Signed-off-by:
Guru Das Srinagesh <gurooodas@gmail.com> Signed-off-by:
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Jonathan Cameron authored
The mpu9250 is a SIP containing an mpu6500 and an ak8975. If this was all there was too it there would be no need for explicit handling in the driver. Arguably the bindings would also only reflect the presence of an mpu6500 with the ak8975 hanging off it, as the kernel doesn't care that they are in one package. However, the WHOAMI value changes as well so best to add explicit support. Signed-off-by: -
Jonathan Cameron authored
These bindings are somewhat lagging the state of the driver. The i2c-gate bindings are documented elsewhere, but it seems sensible to at least have an example and cross reference in here. SPI bindings will need to be the subject of a future patch. Signed-off-by:
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Liang Chen authored
The rk3328 saradc is the same as rk3399. Signed-off-by:
Liang Chen <cl@rock-chips.com> Reviewed-by:
Heiko Stuebner <heiko@sntech.de> Acked-by:
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simran singhal authored
The following Coccinelle script was used to detect this: @r@ expression x; void* e; type T; identifier f; @@ ( *((T *)e) | ((T *)x)[...] | ((T*)x)->f | - (T*) e ) Signed-off-by:
simran singhal <singhalsimran0@gmail.com> Signed-off-by:
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simran singhal authored
The following Coccinelle script was used to detect this: @r@ expression x; void* e; type T; identifier f; @@ ( *((T *)e) | ((T *)x)[...] | ((T*)x)->f | - (T*) e ) Signed-off-by:
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simran singhal authored
The following Coccinelle script was used to detect this: @r@ expression x; void* e; type T; identifier f; @@ ( *((T *)e) | ((T *)x)[...] | ((T*)x)->f | - (T*) e ) Signed-off-by:
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simran singhal authored
The following Coccinelle script was used to detect this: @r@ expression x; void* e; type T; identifier f; @@ ( *((T *)e) | ((T *)x)[...] | ((T*)x)->f | - (T*) e ) Signed-off-by:
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simran singhal authored
The following Coccinelle script was used to detect this: @r@ expression x; void* e; type T; identifier f; @@ ( *((T *)e) | ((T *)x)[...] | ((T*)x)->f | - (T*) e ) Signed-off-by:
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simran singhal authored
The following Coccinelle script was used to detect this: @r@ expression x; void* e; type T; identifier f; @@ ( *((T *)e) | ((T *)x)[...] | ((T*)x)->f | - (T*) e ) Signed-off-by:
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simran singhal authored
Change the name of function from adis16060_spi_write_than_read() to adis16060_spi_write_then_read(). change "than" to "then" as its time depended. Signed-off-by:
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simran singhal authored
Check for attribute_group structures that are only stored in the event_attrs filed of iio_info structure. As the event_attrs field of iio_info structures is constant, so these attribute_group structures can also be declared constant. Done using coccinelle: @r1 disable optional_qualifier @ identifier i; position p; @@ static struct attribute_group i@p = {...}; @ok1@ identifier r1.i; position p; struct iio_info x; @@ x.event_attrs=&i@p; @bad@ position p!={r1.p,ok1.p}; identifier r1.i; @@ i@p @depends on !bad disable optional_qualifier@ identifier r1.i; @@ static +const struct attribute_group i={...}; @depends on !bad disable optional_qualifier@ identifier r1.i; @@ +const struct attribute_group i; As the attrs field of iio_info structures is also constant, so these attribute_group structures can also be declared constant. Done manually. File size before: text data bss dec hex filename 5798 2376 0 8174 1fee drivers/iio/light/lm3533-als.o File size after: text data bss dec hex filename 5926 2248 0 8174 1fee drivers/iio/light/lm3533-als.o Signed-off-by:
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- 01 Apr, 2017 6 commits
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Rick Altherr authored
Aspeed BMC SoCs include a 16 channel, 10-bit ADC. Low and high threshold interrupts are supported by the hardware but are not currently implemented. Signed-off-by:
Rick Altherr <raltherr@google.com> Tested-by:
Xo Wang <xow@google.com> Reviewed-by:
Joel Stanley <joel@jms.id.au> Signed-off-by:
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Rick Altherr authored
Signed-off-by:
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simran singhal authored
As the event_attrs field of iio_info structures is constant, so these attribute_group structures can also be declared constant. File size before: text data bss dec hex filename 15064 1528 0 16592 40d0 drivers/staging/iio/light/tsl2x7x_core.o File size after: text data bss dec hex filename 15192 1400 0 16592 40d0 drivers/staging/iio/light/tsl2x7x_core.o Signed-off-by:
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simran singhal authored
Check for attribute_group structures that are only stored in the attrs filed of iio_info structure. As the attrs field of iio_info structures is constant, so these attribute_group structures can also be declared constant. Done using coccinelle: @r1 disable optional_qualifier @ identifier i; position p; @@ static struct attribute_group i@p = {...}; @ok1@ identifier r1.i; position p; struct iio_info x; @@ x.attrs=&i@p; @bad@ position p!={r1.p,ok1.p}; identifier r1.i; @@ i@p @depends on !bad disable optional_qualifier@ identifier r1.i; @@ static +const struct attribute_group i={...}; @depends on !bad disable optional_qualifier@ identifier r1.i; @@ +const struct attribute_group i; File size before: text data bss dec hex filename 3042 480 0 3522 dc2 drivers/iio/adc/hx711.o File size after: text data bss dec hex filename 3098 416 0 3514 dba drivers/iio/adc/hx711.o Signed-off-by: -
simran singhal authored
Check for attribute_group structures that are only stored in the attrs filed of iio_info structure. As the attrs field of iio_info structures is constant, so these attribute_group structures can also be declared constant. Done using coccinelle: @r1 disable optional_qualifier @ identifier i; position p; @@ static struct attribute_group i@p = {...}; @ok1@ identifier r1.i; position p; struct iio_info x; @@ x.attrs=&i@p; @bad@ position p!={r1.p,ok1.p}; identifier r1.i; @@ i@p @depends on !bad disable optional_qualifier@ identifier r1.i; @@ static +const struct attribute_group i={...}; @depends on !bad disable optional_qualifier@ identifier r1.i; @@ +const struct attribute_group i; File size before: text data bss dec hex filename 3459 488 0 3947 f6b drivers/iio/humidity/hdc100x.o File size after: text data bss dec hex filename 3507 424 0 3931 f5b drivers/iio/humidity/hdc100x.o Signed-off-by: -
simran singhal authored
Check for attribute_group structures that are only stored in the attrs filed of iio_info structure. As the attrs field of iio_info structures is constant, so these attribute_group structures can also be declared constant. Done using coccinelle: @r1 disable optional_qualifier @ identifier i; position p; @@ static struct attribute_group i@p = {...}; @ok1@ identifier r1.i; position p; struct iio_info x; @@ x.attrs=&i@p; @bad@ position p!={r1.p,ok1.p}; identifier r1.i; @@ i@p @depends on !bad disable optional_qualifier@ identifier r1.i; @@ static +const struct attribute_group i={...}; @depends on !bad disable optional_qualifier@ identifier r1.i; @@ +const struct attribute_group i; File size before: text data bss dec hex filename 8503 488 0 8991 231f drivers/iio/light/apds9960.o File size after: text data bss dec hex filename 8567 424 0 8991 231f drivers/iio/light/apds9960.o Signed-off-by:
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