- 01 Oct, 2016 9 commits
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William Breathitt Gray authored
The ACCES 104-QUAD-8 is a general purpose quadrature encoder counter/interface board. The 104-QUAD-8 is capable of monitoring the outputs of eight encoders via four on-board LSI/CSI LS7266R1 24-bit dual-axis quadrature counter chips. Core functions handled by the LS7266R1, such as direction and total count, are available. Performing a write to a counter's IIO_CHAN_INFO_RAW sets the counter and also clears the counter's respective error flag. Although the counters have a 25-bit range, only the lower 24 bits may be set, either directly or via a counter's preset attribute. Interrupts are not supported by this driver. This driver adds IIO support for the ACCES 104-QUAD-8 and ACCES 104-QUAD-4. The base port addresses for the devices may be configured via the base array module parameter. Signed-off-by:
William Breathitt Gray <vilhelm.gray@gmail.com> Signed-off-by:
Jonathan Cameron <jic23@kernel.org>
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William Breathitt Gray authored
Quadrature encoders, such as rotary encoders and linear encoders, are devices which are capable of encoding the relative position and direction of motion of a shaft. This patch introduces several IIO constants for supporting quadrature encoder counter devices. IIO_COUNT: Current count (main data provided by the counter device) IIO_INDEX: Counter device index value Signed-off-by:
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Marcin Malagowski authored
This patch adds minimal driver for the Honeywell Amplified Basic Pressure sensors series. Sensors are pretty simple but are available in many variants: - psi/mbar/kPa output, - analog/i2c/spi, - gage/differential measurement, - different measure ranges etc. Refer to datasheets for more details: http://sensing.honeywell.com/honeywell-sensing-basic-board-mount-pressure-sensors-abp-series-datasheet-323005128-c-en.pdf http://sensing.honeywell.com/index.php%3Fci_id%3D45841 Driver internals: - i2c only. measure request is done by the SMBUS QUICK cmd, so if the i2c bus doesn't support it, it is required to send a dummy byte to trigger measurement, - since iio sysfs expects kilopascals, mbar-variants are treated as their respective kPa-s, hence i2c id-table has doubled entries in one line: { "abp060mg", ABP006KG }, { "abp006kg", ABP006KG }, - psi-variants have prescaled values in config, - no temperature reads yet. Work remained: - optional temperature channel, - SPI support, - DT binding. Changes since v1: - mutex is now locked in read_raw(), - corrected error codes, - fixed coding style issues, - renamed few defines and functions abp -> abp060mg (some structs left as they were to keep the sensible meaning). Signed-off-by:
Marcin Malagowski <mrc@bourne.st> Signed-off-by:
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Brian Masney authored
Add a check to isl29018_write_raw() to ensure that the chip is not in a suspended state. This makes the code consistent with what is present in isl29018_read_raw(). Signed-off-by:
Brian Masney <masneyb@onstation.org> Signed-off-by:
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Brian Masney authored
When the chip is in a suspended state, isl29018_read_raw() will return -EBUSY. Change the function so that it only has a single exit point. Signed-off-by:
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Brian Masney authored
in_illuminance_scale_available_show() references the isl29018_chip->int_time variable in three places inside a for loop. The value of the int_time variable can be updated by the isl29018_set_integration_time() function, which is called by the isl29018_write_raw() function. isl29018_write_raw() locks a mutex specific to this driver when the integration time variable is updated. Signed-off-by:
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Brian Masney authored
Use the IIO_DEVICE_ATTR_RO and IIO_DEVICE_ATTR_RW macros to create the device attributes. Signed-off-by:
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Brian Masney authored
Add new macros: IIO_ATTR_RO, IIO_ATTR_WO, IIO_ATTR_RW, IIO_DEVICE_ATTR_RO, IIO_DEVICE_ATTR_WO and IIO_DEVICE_ATTR_RW to reduce the amount of boiler plate code that is needed for creating new attributes. This mimics the *_RO, *_WO, and *_RW macros that are found in include/linux/device.h and include/linux/sysfs.h. Signed-off-by:
Greg Kroah-Hartman <gregkh@linuxfoundation.org> Signed-off-by:
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Bhumika Goyal authored
The event_attrs field of iio_info structure is only initialized once whenever an object of iio_info is created. After that this field is never modified again anywhere in the kernel. So, declare event_attrs field of iio_info as a const struct attribute_group. Checked for occurences throughout the kernel using grep and coccinelle. Signed-off-by:
Bhumika Goyal <bhumirks@gmail.com> Signed-off-by:
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- 27 Sep, 2016 15 commits
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Bhumika Goyal 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: drivers/staging/iio/light/tsl2583.o text data bss dec hex filename 6529 1052 0 7581 1d9d drivers/staging/iio/light/tsl2583.o File size after: drivers/staging/iio/light/tsl2583.o text data bss dec hex filename 6593 988 0 7581 1d9d drivers/staging/iio/light/tsl2583.o Signed-off-by: -
Bhumika Goyal 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: drivers/staging/iio/adc/ad7280a.o text data bss dec hex filename 6487 584 776 7847 1ea7 drivers/staging/iio/adc/ad7280a.o File size after: drivers/staging/iio/adc/ad7280a.o text data bss dec hex filename 6551 544 776 7871 1ebf drivers/staging/iio/adc/ad7280a.o Signed-off-by:Lars-Peter Clausen <lars@metafoo.de> Signed-off-by:
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Brian Masney authored
Fixes warning found by make W=2: warning: comparison between signed and unsigned integer expressions Signed-off-by:
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Brian Masney authored
Changed the processing of IIO_CHAN_INFO_INT_TIME in isl29018_write_raw() to unlock the mutex and return at the end of the function if invalid input is passed in. This makes the error handling code consistent with the processing of IIO_CHAN_INFO_CALIBSCALE and IIO_CHAN_INFO_SCALE within the same function. Signed-off-by:
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Brian Masney authored
Removes unused variable and associated #defines that was found using make W=1. Signed-off-by:
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Sandhya Bankar authored
Fix the following sparse endianness warnings: drivers/iio/magnetometer/ak8975.c:716:16: warning: cast to restricted __le16 drivers/iio/magnetometer/ak8975.c:837:19: warning: cast to restricted __le16 drivers/iio/magnetometer/ak8975.c:838:19: warning: cast to restricted __le16 drivers/iio/magnetometer/ak8975.c:839:19: warning: cast to restricted __le16 Signed-off-by:
Sandhya Bankar <bankarsandhya512@gmail.com> Signed-off-by:
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Matt Ranostay authored
Add support for the LMP91000 potentiostat which is used for chemical sensing applications. Signed-off-by:
Matt Ranostay <matt@ranostay.consulting> Signed-off-by:
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Matt Ranostay authored
Allow IIO_CHAN_INFO_SCALE and IIO_CHAN_INFO_OFFSET attributes for processing by checking voltage from a regulator. Signed-off-by:
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Matt Ranostay authored
Allow access to underlying channel IIO_CHAN_INFO_OFFSET from a consumer. Signed-off-by:
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Sandhya Bankar authored
Fixing below warnings: drivers/iio/light/max44000.c:217:18: warning: cast to restricted __be16 drivers/iio/light/max44000.c:217:18: warning: cast to restricted __be16 drivers/iio/light/max44000.c:217:18: warning: cast to restricted __be16 drivers/iio/light/max44000.c:217:18: warning: cast to restricted __be16 Signed-off-by:
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Lars-Peter Clausen authored
Add support for the AD7766, AD7766-1, AD7766-2, AD7767, AD7767-1, AD7767-2 Analog to Digital converters. It's a family of single channel 24-bit SAR ADCs. They are all digital interface compatible and the main difference is the internal decimation rate and analog performance. For communication with the host processor a SPI interface is used. In addition the part has a data ready pin that is pulsed for one MCLK cycle when a conversion has completed and can be used as a IIO trigger. Datasheets: http://www.analog.com/media/en/technical-documentation/data-sheets/AD7766.pdf http://www.analog.com/media/en/technical-documentation/data-sheets/AD7767.pdfSigned-off-by:
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Lars-Peter Clausen authored
Use the new iio_trigger_validate_own_device() to verify that the trigger can only be attached to the matching IIO device rather than using a custom variant. While the implementation of iio_trigger_validate_own_device() and the custom variant and are not identical their behaviour is. Signed-off-by:
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Lars-Peter Clausen authored
Use the new iio_trigger_validate_own_device() to verify that the trigger can only be attached to the matching IIO device rather than using a custom variant. While the implementation of iio_trigger_validate_own_device() and the custom variant and are not identical their behaviour is. Signed-off-by:
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Lars-Peter Clausen authored
Some triggers can only be attached to the IIO device that corresponds to the same physical device. Currently each driver that requires this implements its own trigger validation function. Introduce a new helper function called iio_trigger_validate_own_device() that can be used to do this check. Having a common implementation avoids code duplication and unnecessary boiler-plate code. Signed-off-by:
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Sandhya Bankar authored
Fixing below warnings: drivers/iio/dac/ad5592r.c:58:41: warning: incorrect type in argument 2 (different base types) drivers/iio/dac/ad5592r.c:58:41: expected unsigned short [usertype] *buf drivers/iio/dac/ad5592r.c:58:41: got restricted __be16 *<noident> drivers/iio/dac/ad5592r.c:62:41: warning: incorrect type in argument 2 (different base types) drivers/iio/dac/ad5592r.c:62:41: expected unsigned short [usertype] *buf drivers/iio/dac/ad5592r.c:62:41: got restricted __be16 *<noident> drivers/iio/dac/ad5592r.c:92:41: warning: incorrect type in argument 2 (different base types) drivers/iio/dac/ad5592r.c:92:41: expected unsigned short [usertype] *buf drivers/iio/dac/ad5592r.c:92:41: got restricted __be16 *<noident> drivers/iio/dac/ad5592r.c:110:41: warning: incorrect type in argument 2 (different base types) drivers/iio/dac/ad5592r.c:110:41: expected unsigned short [usertype] *buf drivers/iio/dac/ad5592r.c:110:41: got restricted __be16 *<noident> Signed-off-by:
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- 24 Sep, 2016 3 commits
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Sandhya Bankar authored
Fixing below warning: drivers/iio/adc/max1027.c:241:34: warning: dubious: x | !y . Signed-off-by:
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Markus Elfring authored
A multiplication for the size determination of a memory allocation indicated that an array data structure should be processed. Thus use the corresponding function "kmalloc_array". This issue was detected by using the Coccinelle software. Signed-off-by:
Markus Elfring <elfring@users.sourceforge.net> Signed-off-by:
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Wei Yongjun authored
Fixes the following sparse warning: drivers/iio/accel/mma7660.c:42:11: warning: symbol 'mma7660_nscale' was not declared. Should it be static? Signed-off-by:
Wei Yongjun <weiyongjun1@huawei.com> Signed-off-by:
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- 22 Sep, 2016 13 commits
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Mugunthan V N authored
When help ('?') option is passed to the command, the help text printed but not from '?' switch case of getopt_long() but as a invalid argument as below. Fix this by adding '?' to opt_String of getopt_long(). root@am437x-evm:~# ./iio_generic_buffer -? ./iio_generic_buffer: invalid option -- '?' Usage: generic_buffer [options]... Capture, convert and output data from IIO device buffer -a Auto-activate all available channels ... Signed-off-by:Mugunthan V N <mugunthanvnm@ti.com> Signed-off-by:
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Arnd Bergmann authored
The -Wempty-body gcc warning triggers in the newly added zpa2326 driver: drivers/iio/pressure/zpa2326.c: In function 'zpa2326_dequeue_pressure': drivers/iio/pressure/zpa2326.c:578:3: error: suggest braces around empty body in an 'if' statement [-Werror=empty-body] The use of an empty statement behind 'if (...)' is harmless here, but it shows that the dev_dbg() macro is not used correctly: when the "DEBUG" macro is not set, dev_dbg() already defaults to a no-operation, though one that lets the compiler know that the arguments are used, and lets it check the format string. Fixing this also simplifies the driver. Fixes: 03b262f2 ("iio:pressure: initial zpa2326 barometer support") Signed-off-by:
Arnd Bergmann <arnd@arndb.de> Signed-off-by:
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Arnd Bergmann authored
The newly added __sca3000_get_base_freq function handles all valid modes of the SCA3000_REG_ADDR_MODE register, but gcc notices that any other value (i.e. 0x00) causes the base_freq variable to not get initialized: drivers/staging/iio/accel/sca3000_core.c: In function 'sca3000_write_raw': drivers/staging/iio/accel/sca3000_core.c:527:23: error: 'base_freq' may be used uninitialized in this function [-Werror=maybe-uninitialized] This adds explicit error handling for unexpected register values, to ensure this cannot happen. Fixes: e0f3fc9b ("iio: accel: sca3000_core: implemented IIO_CHAN_INFO_SAMP_FREQ") Signed-off-by:
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Sandhya Bankar authored
This issue was found by checkpatch. Signed-off-by:
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Sandhya Bankar authored
This patch was found by checkpatch. Signed-off-by:
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Rehas Sachdeva authored
Move the test to check if a variable is NULL, to right after it is being assigned, rather than some statements later. Signed-off-by:
Rehas Sachdeva <aquannie@gmail.com> Signed-off-by:
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sayli karnik authored
This patch removes an unnecessary variable used to store return values in order to reduce memory usage. Done using coccinelle: @@ type T; constant C; identifier ret; @@ - T ret = C; ... when != ret return - ret + C ; Signed-off-by:
sayli karnik <karniksayli1995@gmail.com> Signed-off-by:
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Rehas Sachdeva authored
Remove 'x=a;' from a consecutive double assignment of the form 'x=a; x=b;'. Issue detected by the semantic patch found here: https://github.com/coccinelle/coccinellery/blob/master/write2/write2.cocciSigned-off-by:
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Yannis Damigos authored
This patch fixes multiple black lines issue found by checkpatch.pl Signed-off-by:
Yannis Damigos <giannis.damigos@gmail.com> Signed-off-by:
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Rehas Sachdeva authored
Remove unnecessary parentheses from right side of an assignment. Issue detected by the following Coccinelle semantic patch: @r@ identifier x; expression e1, e2; @@ - x = (e1 << e2); + x = e1 << e2; Signed-off-by:
Julia Lawall <julia.lawall@lip6.fr> Signed-off-by:
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Rehas Sachdeva authored
Replaces left shift operation (1 << d) by BIT(x) macro. Signed-off-by:
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Rehas Sachdeva authored
Setting the variable 'refresh_rate = 60;' has no use to the rest of the function. Hence the if statement setting it and the variable itself can be removed. This was detected using the following Coccinelle semantic patch: @@ type T; identifier i; constant C; @@ ( extern T i; | - T i; <+... when != i - i = C; ...+> ) Signed-off-by:
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Katie Dunne authored
Issue found by checkpatch. Signed-off-by:
Katie Dunne <kdunne@mail.ccsf.edu> Signed-off-by:
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