- 22 Sep, 2018 6 commits
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Song Qiang authored
This driver was originally written by ST in 2016 as a misc input device driver, and hasn't been maintained for a long time. I grabbed some code from it's API and reformed it into an iio proximity device driver. This version of driver uses i2c bus to talk to the sensor and polling for measuring completes, so no irq line is needed. It can be tested with reading from /sys/bus/iio/devices/iio:deviceX/in_distance_input Signed-off-by: Song Qiang <songqiang1304521@gmail.com> Reviewed-by: Rob Herring <robh@kernel.org> Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
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Alexandru Ardelean authored
The current structs are only partially documented via annotations. This change updates annotations for all structs in the ad7606.h file. Signed-off-by: Alexandru Ardelean <alexandru.ardelean@analog.com> Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
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Song Qiang authored
Replace 'hcm5843' with 'hmc5843'. Signed-off-by: Song Qiang <songqiang1304521@gmail.com> Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
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Alexey Khoroshilov authored
Leaving for_each_child_of_node loop we should release child device node, if it is not stored for future use. Found by Linux Driver Verification project (linuxtesting.org). JC: I'm not sending this as a quick fix as it's been wrong for years, but good to pick up for stable after the merge window. Signed-off-by: Alexey Khoroshilov <khoroshilov@ispras.ru> Fixes: 6df2e98c ("iio: adc: Add imx25-gcq ADC driver") Cc: <Stable@vger.kernel.org> Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
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David Lechner authored
This changes how the SPI message for the triggered buffer is setup in the TI ADS7950 A/DC driver. By using the SPI_CS_WORD flag, we can read multiple samples in a single SPI transfer. If the SPI controller supports DMA transfers, we can see a significant reduction in CPU usage. For example, on an ARM9 system running at 456MHz reading just 4 channels at 100Hz: before this change, top shows the CPU usage of the IRQ thread of this driver to be ~7.7%. After this change, the CPU usage drops to ~3.8%. The use of big-endian for the raw data was cargo culted from another driver when this driver was originally written. It used an SPI word size of 8 bits and big-endian byte ordering to effectively emulate 16 bit words. Now, in order to inject a CS toggle between each word, we need to use the correct word size, otherwise we would get a CS toggle half way through each word 16-bit. The SPI subsystem uses CPU byte ordering for multi-byte words. So, the data we get back from the SPI is going to be CPU endian now no matter what. Converting that to big endian will just add overhead on little endian systems so we opt to change the raw data format from big endian to CPU endian. There is a small risk that this could break some lazy userspace programs that use the raw data without checking the data format. We can address this if/when it actually comes up. Signed-off-by: David Lechner <david@lechnology.com> Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
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Jonathan Cameron authored
spi: Provide SPI_CS_WORD This provides a SPI operation mode which changes chip select after every word, used by some devices such as ADCs and DACs.
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- 17 Sep, 2018 2 commits
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David Lechner authored
This adds a default software implementation for the SPI_CS_WORD flag for controllers that don't have such a feature. The SPI_CS_WORD flag indicates that the CS line should be toggled between each word sent, not just between each transfer. The implementation works by using existing functions to split transfers into one-word-sized transfers and sets the cs_change bit for each of the new transfers. Signed-off-by: David Lechner <david@lechnology.com> Acked-by: Jonathan Cameron <Jonathan.Cameron@huawei.com> Signed-off-by: Mark Brown <broonie@kernel.org>
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David Lechner authored
This adds a new SPI mode flag, SPI_CS_WORD, that is used to indicate that a SPI device requires the chip select to be toggled after each word that is transferred. Signed-off-by: David Lechner <david@lechnology.com> Signed-off-by: Mark Brown <broonie@kernel.org>
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- 16 Sep, 2018 2 commits
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Alexandru Ardelean authored
The ad7606_chip_info struct does not have the lock & name fields. Remove the kernel documentation annotations for it. Signed-off-by: Alexandru Ardelean <alexandru.ardelean@analog.com> Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
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Alexandru Ardelean authored
Fixes commit 17be2a29 ("staging: iio: ad7606: replace range/range_available with corresponding scale"). The AD7606 devices don't have a 2.5V voltage range, they have 5V & 10V voltage range, which is selectable via the `gpio_range` descriptor. The scales also seem to have been miscomputed, because when they were applied to the raw values, the results differ from the expected values. After checking the ADC transfer function in the datasheet, these were re-computed. Signed-off-by: Alexandru Ardelean <alexandru.ardelean@analog.com> Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
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- 14 Sep, 2018 7 commits
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Thomas Petazzoni authored
Even though I did introduce the fbtft code in staging a while ago to stop seeing this being developed out-of-tree, I don't intend to maintain it, and I don't use it actively. So be honest and remove myself from the MAINTAINERS file for this subsystem. Signed-off-by: Thomas Petazzoni <thomas.petazzoni@bootlin.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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Igor Stoppa authored
WARN_ON() already contains an unlikely(), so it's not necessary to wrap it into another. Signed-off-by: Igor Stoppa <igor.stoppa@huawei.com> Cc: Aaro Koskinen <aaro.koskinen@iki.fi> Cc: Greg Kroah-Hartman <gregkh@linuxfoundation.org> Cc: devel@driverdev.osuosl.org Cc: linux-kernel@vger.kernel.org Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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zhong jiang authored
platform_driver_register will set the .owner field. So it is safe to remove the redundant assignment. The issue is detected with the help of Coccinelle. Signed-off-by: zhong jiang <zhongjiang@huawei.com> Acked-by: Vaibhav Agarwal <vaibhav.sr@gmail.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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Colin Ian King authored
Currently the pointer wilc is being null checked several times and yet not checked for the final workqueue flush and destroy (which can lead to a null pointer dereference if wilc is null); these missing null checks were overlooked in an earlier core refactoring commit. Clean up the code by checking wilc at the start and bailing out early if it is null allowing the subsequent null checks to be removed, this also fixes the potential null pointer deferences on the workqueue flush and destroy calls. Detected by CoverityScan, CID#1473305 ("Dereference after null check") Fixes: b3ee105c ("staging: wilc1000: refactor code to move initilization in wilc_netdev_init()") Signed-off-by: Colin Ian King <colin.king@canonical.com> Reviewed-by: Claudiu Beznea <claudiu.beznea@microchip.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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Greg Kroah-Hartman authored
Merge tag 'iio-for-4.20a' of git://git.kernel.org/pub/scm/linux/kernel/git/jic23/iio into staging-next Jonathan writes: 1st round of IIO new device support, features and cleanups in the 4.20 cycle. There is a merge commit in here to pull in regmap support for repeatedly reading the same register (to read out FIFOs). Used by the adxl372 driver. This will find uses elsewhere once we tidy up various drivers that are effectively doing this and relying on not enabling regcache. New device support * Analog devices ADXL372 accelerometer - new driver for this accelerometer including fifo and and interrupt support. Follow up patches enforce trigger validation, add sampling frequency control and filter bandwidth control. A later series added i2c support to the existing SPI support. * ST lsm6dsx - rework and add support fo the LSM6DSO 6 axis mems sensor. * Linear LTC 1660 DAC - new driver supporting the LTC 1660 and LTC 1665 SPI DACs. * Microchip mcp3911 ADC. - new driver for this integrated analog front end and ADC. * Qualcomm SPMI PMIC5 adc driver - using the spmi framework, new driver and bindings for this ADC. Follow up patch adds some missing channels. Features * ad5758 - support hard reset using a gpio (if provided). * mpu6050 - Regulator support * qcom-spmi-adc5 - Sanity check the channel numbers provided by DT to make sure the driver actually knows about them. * sc27xx - give raw data for channel 20 as it's used on all known boards for the headset which needs a custom converstion function. If it turns out someone builds a board where this isn't true we will deal with it when it happens. - add ADC scale calibration. * tsl2772 - support device tree binding to set the proximity led settings. - regulator supprot. - binding for apds9930 - trivial addition as register compatible with tsl2772. Cleanups / Minor fixes * adxl345 - supress a static checker warning but explicitly checking if the id object is null. * bh1750 - avoid CONFIG_PM_SLEEP checks. - SPDX. * bme680 - spelling mistake - use clamp rather than open coding. - white space and other similar fixes. - rename MSK to MASK for clarifty and use GENMASK to specify them. - use the FIELD_GET macro rather than a very odd accessor of dividing by 16 to get the shift. - rework to share handing for oversampling of the various channels in a unified way. - check explicitly for val2 in write_raw function to ensure it is 0. - drop some field defines that don't add anything. * dpot-adc - SPDX * envelope detector - SPDX * isl29501 - fix an ancient compiler warning mostly because it results in much nicer code. * max30102 - mark switch fall throughs. * max44000 - drop an unused variable. * max512 - avoid CONFIG_PM_SLEEP checks. * max5481 - use of_device_get_match_data rather than open coding it. * max5821 - avoid CONFIG_PM_SLEEP checks. * max9611 - explicity cast an enum to an integer to make it totally clear that this is intended. * mcp4018 - fix an inconsistent MODULE_LICENSE. - use of_device_get_match_data rather than open coding it. * mcp4531 - use of_device_get_match_data rather than open coding it. - SPDX * mcp4725 - avoid CONFIG_PM_SLEEP checks. * mcp4922 - Fix error handling and prevent writing a negative to when setting the output voltage. * ms5611 - drop deprecated compatible strings without manufacturer from being explicitly listed. They are handled anyway. - SPDX * multiplexer - SPDX * qcom-vadc - fix inconsistent documentation for reg. * ti-dac5571 - provide and of_match_table. * treewide - update Michael Hennerich's email address. - Use %pOFn rather than device_node.name. * documentation. - tidy up a wrong kernel version for the introduction of the position_relative ABI.
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Chengguang Xu authored
It's a little bit strange when fault_injection related option fail with -EINVAL which was already disabled from config, so surround all fault_injection related option parsing code using CONFIG_EROFS_FAULT_INJECTION. Meanwhile, slightly change warning message to keep consistency with option POSIX_ACL and FS_XATTR. Signed-off-by: Chengguang Xu <cgxu519@gmx.com> Reviewed-by: Chao Yu <yuchao0@huawei.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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Thomas Weißschuh authored
Fix coding style issue "Prefer 'unsigned int' to bare use of 'unsigned'" detected by checkpatch.pl. Signed-off-by: Thomas Weißschuh <linux@weissschuh.net> Reviewed-by: Chao Yu <yuchao0@huawei.com> Reviewed-by: Gao Xiang <gaoxiang25@huawei.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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- 11 Sep, 2018 4 commits
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Michael Straube authored
The the last two parameters of write_cam() have type u8. Change the type of the passed arrays from unsigned char to u8. Clears a line over 80 characters checkpatch warning. Signed-off-by: Michael Straube <straube.linux@gmail.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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Michael Straube authored
Wrap lines over 80 characters where appropriate to clear checkpatch warnings. Signed-off-by: Michael Straube <straube.linux@gmail.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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Michael Straube authored
Remove unnecessary parentheses from conditionals. Also clears 'Alignment should match open parenthesis' checkpatch issue. Signed-off-by: Michael Straube <straube.linux@gmail.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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Michael Straube authored
Refactor switch cases in SwLedControlMode1() to reduce indentation level. Also clears line over 80 characters checkpatch warnings. Suggested-by: Joe Perches <joe@perches.com> Signed-off-by: Michael Straube <straube.linux@gmail.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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- 10 Sep, 2018 19 commits
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Ajay Singh authored
Cleanup to remove handle_hif_exit_work(), as after code refactoring its not required anymore. Signed-off-by: Ajay Singh <ajay.kathat@microchip.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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Ajay Singh authored
Refactor the wilc_netdev_init() to cleanup the memory for error scenario and remove unnecessary 'dev' pointer check. Signed-off-by: Ajay Singh <ajay.kathat@microchip.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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Ajay Singh authored
Refactor code to move the initialization of wilc related parameters in wilc_netdev_init() and move their deinitialization in wilc_netdev_cleanup(). For 'hif_workqueue' creation 'clients_count' check is not required as the single instance is maintained. Signed-off-by: Ajay Singh <ajay.kathat@microchip.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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Ajay Singh authored
Remove the use of unnecessary static variable 'p2p_listen_state'. Already 'p2p_listen_state' is present in 'wilc_priv' struct. So making use of that variable as its getting set in channel ready and remain on channel expired callback. Signed-off-by: Ajay Singh <ajay.kathat@microchip.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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Ajay Singh authored
Move static variable 'wilc_connecting' as part of 'wilc_vif' private struct. Remove "wilc_" prefix from name as its already part of wilc_vif struct. Signed-off-by: Ajay Singh <ajay.kathat@microchip.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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Ajay Singh authored
Move the static variable as part of 'wilc' priv struct. Signed-off-by: Ajay Singh <ajay.kathat@microchip.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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Ajay Singh authored
Cleanup code to remove the variables related to setting and getting IP address as this case was not handled from firmware side. Signed-off-by: Ajay Singh <ajay.kathat@microchip.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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Ajay Singh authored
Use short variable names to avoid line over 80 chars checkpatch warning in tcp_process(). struct pending_acks_info --> struct pending_ack int tcp_pending_ack_idx --> int ack_idx u32 pending_ack --> u32 pending_ack_idx Signed-off-by: Ajay Singh <ajay.kathat@microchip.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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Ajay Singh authored
Cleanup patch to avoid line over 80 chars checkpatch issue introduced in previous code refactor commit. Signed-off-by: Ajay Singh <ajay.kathat@microchip.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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Ajay Singh authored
Avoid use of static variables and move them as part of wilc_vif struct. Move all the parameters related to tcp_ack_filter algo to wilc_vif struct. Signed-off-by: Ajay Singh <ajay.kathat@microchip.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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Ajay Singh authored
Cleanup patch to use lowercase name for get_BSSID() and HIL variable. Signed-off-by: Ajay Singh <ajay.kathat@microchip.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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Ajay Singh authored
Refactor tcp_process() to avoid unnecessary leading tabs in the function. Signed-off-by: Ajay Singh <ajay.kathat@microchip.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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Ajay Singh authored
Avoid use of static variable and move 'rcv_assoc_resp' as part of 'hif_drv' struct. Rename from 'rcv_assoc_resp' to 'assoc_resp'. Signed-off-by: Ajay Singh <ajay.kathat@microchip.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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Ajay Singh authored
Cleanup patch to use appropriate variable name to fetch the periodic statistics. Signed-off-by: Ajay Singh <ajay.kathat@microchip.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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Ajay Singh authored
Refactor code to move 'periodic_rssi' as part of wilc_vif struct. Move 'dummy_statistics' from 'wilc' struct to 'wilc_vif' to maintain for each interface separately. Signed-off-by: Ajay Singh <ajay.kathat@microchip.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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Ajay Singh authored
Avoid use of static variable hif_workqueue and move it inside 'wilc' structure. Signed-off-by: Ajay Singh <ajay.kathat@microchip.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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Ajay Singh authored
Refactor the code to avoid use of 'wilc_set_multicast_list' global variable. Allocate the memory required to keep the multicast mac address and pass it to the worker thread. Signed-off-by: Ajay Singh <ajay.kathat@microchip.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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Ajay Singh authored
Avoid use of static variable 'clients_count' and move it part of 'wilc' structure. Signed-off-by: Ajay Singh <ajay.kathat@microchip.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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Ajay Singh authored
Cleanup patch to avoid the avoid extra 'if' condition and clubbed the same condition in single 'if' block. Signed-off-by: Ajay Singh <ajay.kathat@microchip.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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