- 10 May, 2020 1 commit
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Alexandru Ardelean authored
The main intent here is to get rid of the iio_buffer_set_attrs() helper, or at least rework it's usage a bit. The problem with that helper is that it needs a pointer to the buffer, which makes supporting multiple buffers per IIO device a bit more cumbersome. The hid_sensor_setup_trigger() is pretty much used in the same way: - iio_triggered_buffer_setup() gets called before - then hid_sensor_setup_trigger() and hid_sensor_setup_batch_mode() gets called which may attach some fifo attributes This change merges the 2 together under the hid_sensor_setup_trigger() function. Only the &iio_pollfunc_store_time is passed to all devices, so it's not even required to pass it explicitly outside of the common hid_sensor_setup_trigger() function. Moving the devm_iio_triggered_buffer_setup/cleanup() calls into the common place code can help the rework of the buffer code, since it is in one place. One detail of the change is that there are 2 drivers that use devm_iio_triggered_buffer_setup(). That function gets implicitly replaced with iio_triggered_buffer_setup()/cleanup(), but since all drivers call both hid_sensor_setup_trigger9) & hid_sensor_remove_trigger() trigger, the iio_triggered_buffer_cleanup() piggy backs on the hid_sensor_remove_trigger() call, which should cover the cleanup. Signed-off-by:
Alexandru Ardelean <alexandru.ardelean@analog.com> Acked-by:
Srinivas Pandruvada <srinivas.pandruvada@linux.intel.com> Signed-off-by:
Jonathan Cameron <Jonathan.Cameron@huawei.com>
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- 03 May, 2020 39 commits
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Mathieu Othacehe authored
The VCNL4010 and VCNL4020 chips are able to raise interrupts on data ready. Use it to provide triggered buffer support for proximity data. Those two chips also provide ambient light data. However, they are sampled at different rate than proximity data. As this is not handled by the IIO framework for now, and the sample frequencies of ambient light data are very low, do add buffer support for them. Signed-off-by:
Mathieu Othacehe <m.othacehe@gmail.com> Signed-off-by:
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Mathieu Othacehe authored
Add sampling frequency support for proximity data on VCNL4010 and VCNL4020 chips. Signed-off-by:
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Mathieu Othacehe authored
The VCNL4010 and VCNL4020 chips are able to raise interrupts on proximity threshold events. Add support for threshold rising and falling events for those two chips. Signed-off-by:
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Mathieu Othacehe authored
Factorize data reading in vcnl4000_measure into a vcnl4000_read_data function. Also add a vcnl4000_write_data function. Signed-off-by:
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Mathieu Othacehe authored
The bytes returned by the i2c reading need to be swapped unconditionally. Otherwise, on be16 platforms, an incorrect value will be returned. Taking the slow path via next merge window as its been around a while and we have a patch set dependent on this which would be held up. Fixes: 62a1efb9 ("iio: add vcnl4000 combined ALS and proximity sensor") Signed-off-by:
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Alexandru Ardelean authored
The IIO core provides a iio_get_debugfs_dentry() helper. It seems that the ADIS IMU drivers access that field directly. This change converts them to use iio_get_debugfs_dentry() instead. Signed-off-by:
Nuno Sá <nuno.sa@analog.com> Signed-off-by:
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Chris Ruehl authored
This patch add support for Analog Devices (Linear Technology) LTC2634 Quad 12-/10-/8-Bit Rail-to-Rail DAC. The SPI functionality based on them from LTC2632 therefor add the definitions only and update the Kconfig. Signed-off-by:
Chris Ruehl <chris.ruehl@gtsys.com.hk> Acked-by:
Uwe Kleine-König <u.kleine-koenig@pengutronix.de> Signed-off-by:
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Chris Ruehl authored
The documentation for ltc_2632_chip_info missed the desciption for the num_channels. This trivial patch adds it. Signed-off-by:
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Linus Walleij authored
The manual for the HSCDTD008A gives us a scaling for the three axis as +/- 2.4mT (24 Gauss) per axis. The manual for the AMI305 and AMI306 gives us a scaling for the three axis as +/- 12 Gauss per axis. Tests with the HSCDTD008A sensor, cat the raw values: $ cat in_magn_*_raw raw 45 189 -19 The scaling factor in in_magn_*_scale is 0.001464843, which gives: 0.065 Gauss 0.277 Gauss -0.027 Gauss The earths magnetic field is in the range of 0.25 to 0.65 Gauss on the surface according to Wikipedia, so these seem like reasonable values. Again we are guessing that the AK8974 has a 12 bit ADC, based on the similarity with AMI305 and AMI306. Cc: Nick Reitemeyer <nick.reitemeyer@web.de> Cc: Stephan Gerhold <stephan@gerhold.net> Cc: Michał Mirosław <mirq-linux@rere.qmqm.pl> Signed-off-by:
Linus Walleij <linus.walleij@linaro.org> Signed-off-by:
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Linus Walleij authored
This breaks out the measurement code to its own function so we can handle this without swirling it up with the big switch() statement inside ak8974_read_raw(). Keep a local s16 helper variable for the signed value coming out of the measurement before assigning it to the integer *val. The local variable makes the code easier to read and the compiler will optimize it if possible. Cc: Nick Reitemeyer <nick.reitemeyer@web.de> Cc: Stephan Gerhold <stephan@gerhold.net> Reviewed-by:
Michał Mirosław <mirq-linux@rere.qmqm.pl> Signed-off-by:
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Linus Walleij authored
The HSCDTD008A has 15 bits of actual ADC valie, and the AMI305 and AMI306 has 12 bits. Correct this by providing an extra parameter to the channel macro and define a separate set of channels for each variant of the chip. The resolution is the actual resolution of the internal ADC of the chip. The values are stored in a S16 in 2's complement so all 16 bits are used for storing (no shifting needed). The AMI305, AMI306 and HSCDTD008A valid bits are picked from respective datasheet. My best educated guess is that AK8974 is also 12 bits. The AK8973 is an 8 bit and earlier version, and the sibling drivers AMI305 and AMI306 are 12 bits, so it makes sense to assume that the AK8974 is also 12 bits. Cc: Nick Reitemeyer <nick.reitemeyer@web.de> Cc: Stephan Gerhold <stephan@gerhold.net> Cc: Michał Mirosław <mirq-linux@rere.qmqm.pl> Signed-off-by:
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Nick Reitemeyer authored
The hscdtd008a is similar to the AK8974: Only the whoami value and some registers are different. Signed-off-by:
Nick Reitemeyer <nick.reitemeyer@web.de> Reviewed-by:
Stephan Gerhold <stephan@gerhold.net> Tested-by:
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Nick Reitemeyer authored
Add binding documentation for the Alps HSCDTD008A, which is similar to the ak8974. Signed-off-by:
Rob Herring <robh@kernel.org> Signed-off-by:
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Lorenzo Bianconi authored
Enable 833Hz ODR for sensors that supports tagged hw FIFO: - LSM6DSO/LSM6DSOX - LSM6DSR/LSM6DSRX - ASM330LHH Signed-off-by:
Lorenzo Bianconi <lorenzo@kernel.org> Signed-off-by:
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Colin Ian King authored
The null check on st->chip_info->convst_channel is redundant because convst_channel is a 2 element array of struct iio_chan_spec objects and this can never be null. Fix this by removing the null check. Addresses-Coverity: ("Array compared against 0") Signed-off-by:Colin Ian King <colin.king@canonical.com> Reviewed-by:
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Alexandru Ardelean authored
This change is both cosmetic and a prequel to adding support for attaching multiple buffers per IIO device. The IIO buffer sysfs attrs are mostly designed to support only one attached buffer, and in order to support more, we need to centralize [in each attr function] the buffer which is being accessed. This also makes it a bit more uniform, as in some functions there is a short-hand 'buffer' variable and at the same time the 'indio_dev->buffer' is still access directly. Signed-off-by:
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Christophe JAILLET authored
This module is related to AD5592R, not AD5593R, so be consistent in naming. Signed-off-by:
Christophe JAILLET <christophe.jaillet@wanadoo.fr> Signed-off-by:
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Christophe JAILLET authored
This module is related to AD5593R, not AD5592R. Signed-off-by:
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Andy Shevchenko authored
Use these functions instead of open-coding them. Cc: Denis Ciocca <denis.ciocca@st.com> Signed-off-by:
Andy Shevchenko <andriy.shevchenko@linux.intel.com> Signed-off-by:
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Andy Shevchenko authored
This makes the driver code slightly easier to read. Signed-off-by:
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Andy Shevchenko authored
This makes the driver code slightly easier to read. Signed-off-by:
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Andy Shevchenko authored
This makes the driver code slightly easier to read. Signed-off-by:
Tomasz Duszynski <tduszyns@gmail.com> Signed-off-by:
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Andy Shevchenko authored
This makes the driver code slightly easier to read. Signed-off-by:
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Andy Shevchenko authored
This makes the driver code slightly easier to read. Cc: Song Qiang <songqiang1304521@gmail.com> Signed-off-by:
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Andy Shevchenko authored
This makes the driver code slightly easier to read. Signed-off-by:
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Andy Shevchenko authored
This makes the driver code slightly easier to read. Cc: Maxime Roussin-Bélanger <maxime.roussinbelanger@gmail.com> Signed-off-by:
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Andy Shevchenko authored
This makes the driver code slightly easier to read. Signed-off-by:
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Andy Shevchenko authored
This makes the driver code slightly easier to read. Cc: Lars-Peter Clausen <lars@metafoo.de> Cc: Michael Hennerich <Michael.Hennerich@analog.com> Signed-off-by:
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Andy Shevchenko authored
This makes the driver code slightly easier to read. Cc: Lars-Peter Clausen <lars@metafoo.de> Cc: Michael Hennerich <Michael.Hennerich@analog.com> Signed-off-by:
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Andy Shevchenko authored
This makes the driver code slightly easier to read. Cc: Lars-Peter Clausen <lars@metafoo.de> Cc: Michael Hennerich <Michael.Hennerich@analog.com> Signed-off-by:
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Andy Shevchenko authored
This makes the driver code slightly easier to read. Signed-off-by:
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Andy Shevchenko authored
This makes the driver code slightly easier to read. Signed-off-by:
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Andy Shevchenko authored
This makes the driver code slightly easier to read. Signed-off-by:
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Andy Shevchenko authored
This makes the driver code slightly easier to read. Cc: Lars-Peter Clausen <lars@metafoo.de> Cc: Michael Hennerich <Michael.Hennerich@analog.com> Signed-off-by:
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Jonathan Cameron authored
Noticed whilst reviewing Alexandru's patch to the same function. If we simply flip the logic and return NULL immediately after memory allocation failure we reduce the indent of the following block and end up with more 'idiomatic' kernel code. Signed-off-by:
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Manivannan Sadhasivam authored
Add devicetree OF match table support for CCS811 VOC sensor. Reviewed-by:
Andy Shevchenko <andy.shevchenko@gmail.com> Signed-off-by:
Manivannan Sadhasivam <mani@kernel.org> Signed-off-by:
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Manivannan Sadhasivam authored
CCS811 VOC sensor exposes nRESET and nWAKE pins which can be connected to GPIO pins of the host controller. These pins can be used to externally release the device from reset and also to wake it up before any I2C transaction. The initial driver support assumed that the nRESET pin is not connected and the nWAKE pin is tied to ground. This commit improves it by adding support for controlling those two pins externally using a host controller. For the case of reset, if the hardware reset is not available, the mechanism to do software reset is also added. As a side effect of doing this, the IIO device allocation needs to be slightly moved to top of probe to make use of priv data early. Signed-off-by:
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Manivannan Sadhasivam authored
This commit adds devicetree binding for AMS CCS811 VOC sensor. Signed-off-by:
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Nuno Sá authored
Document the ADIS16475 device devicetree bindings Signed-off-by:
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