Add SPDX license identifiers to all files which:
- Have no license information of any form
- Have MODULE_LICENCE("GPL*") inside which was used in the initial
scan/conversion to ignore the file
These files fall under the project license, GPL v2 only. The resulting SPDX
license identifier is:
GPL-2.0-only
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
devm_regmap_init_i2c may fail and return NULL. The fix returns
the error when it fails.
Signed-off-by: Kangjie Lu <kjlu@umn.edu>
Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
- use temporary variable in get_mount_matrix()
- remove , after { }
Signed-off-by: H. Nikolaus Schaller <hns@goldelico.com>
Reviewed-by: Andy Shevchenko <andy.shevchenko@gmail.com>
Reviewed-by: Linus Walleij <linus.walleij@linaro.org>
Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
This patch allows to read a mount-matrix device tree
property and report to user-space or in-kernel iio
clients.
Signed-off-by: H. Nikolaus Schaller <hns@goldelico.com>
Reviewed-by: Linus Walleij <linus.walleij@linaro.org>
Reviewed-by: Andy Shevchenko <andy.shevchenko@gmail.com>
Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
This patch allows to read a mount-matrix device tree
property and report to user-space or in-kernel iio
clients.
Signed-off-by: H. Nikolaus Schaller <hns@goldelico.com>
Reviewed-by: Linus Walleij <linus.walleij@linaro.org>
Reviewed-by: Andy Shevchenko <andy.shevchenko@gmail.com>
Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
Currently mount matrix is allowed in Device Tree, though there is
no technical issue to extend it to support ACPI.
Convert the function to use device_property_read_string_array() and
thus allow to read mount matrix from ACPI if available.
Example of use in _DSD method:
Name (_DSD, Package ()
{
ToUUID("daffd814-6eba-4d8c-8a91-bc9bbf4aa301"),
Package ()
{
Package () { "mount-matrix", Package() {
"1", "0", "0",
"0", "0.866", "0.5",
"0", "-0.5", "0.866",
} },
}
})
At the same time drop the "of" prefix from its name and
convert current users.
No functional change intended.
Signed-off-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
Reviewed-by: Linus Walleij <linus.walleij@linaro.org>
Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
The magnetometer's power supplies could be controllable on some platforms,
such as i.MX6Q-SABRESD board, the mag3110's power supplies are controlled
by a GPIO fixed regulator, need to make sure the regulators are enabled
before any communication with mag3110, this patch adds vdd/vddio regulator
operation support.
Signed-off-by: Anson Huang <Anson.Huang@nxp.com>
Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
Staging graduation
* ad2s90
- Driver for this resolver to digital chip.
New drivers and device support.
* ad5686
- Add support for ad5310r DAC and associated fix in value read back.
* exynos-adc
- Support for S5PV210 which is slightly different from other parts.
* mcp41010
- Driver supporting MCP41010, MCP41050, MCP41100, MCP42010, MCP42050 and
MCP42100 microchip potentiometers.
New ACPI ids.
* ak8975
- AKM9911 ACPI HID.
* kxcjk-1013
- KXJ2109 ACPI HID.
- KIOX010A ACPI HID.
New features
* ad5933
- Explicit DT binding.
* ad2s90
- Explicit DT binding including dropping spi setup that is done via dt
in favour of verifying the settings form DT.
* adt7316
- Explicit DT binding and support for gpio, irq_flags etc.
* stm32-adc
- Runtime power management.
Minor fixes and cleanups
* core
- Protect against missing info structure.
* ad2s90
- SPDX
- Add documentation fo the mutex.
* ad7280a
- Check allocation failure.
- Fix an accidental replacement of an error return.
* adt7316
- Switch some variables to be local and rename for consistency with other
drivers.
- Revert a false handling of 0 as an error introduced earlier this cycle.
* bmi160
- Use devm functions throughout probe() to avoid need for remove().
* hid-sensor-hub
- White space cleanup.
* hts221
- MAINTAINERS entry.
* lis302
- Use generic name in the DT binding doc.
* Messon-saradc
- Check for allocation error.
- Fix some presented clock names that break clk debugfs.
* qcom-spmi-adc
- A fix for initialization of the prescale property. Came late in the
cycle, so merge window is probably the best route for this.
* st_lsm6dsx
- Allow for variable read length to support wider range of slave devices.
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Merge tag 'iio-for-4.21b' of git://git.kernel.org/pub/scm/linux/kernel/git/jic23/iio into staging-next
Jonathan writes:
Second set of IIO new device support, features and cleanups for the 4.21 cycle.
Staging graduation
* ad2s90
- Driver for this resolver to digital chip.
New drivers and device support.
* ad5686
- Add support for ad5310r DAC and associated fix in value read back.
* exynos-adc
- Support for S5PV210 which is slightly different from other parts.
* mcp41010
- Driver supporting MCP41010, MCP41050, MCP41100, MCP42010, MCP42050 and
MCP42100 microchip potentiometers.
New ACPI ids.
* ak8975
- AKM9911 ACPI HID.
* kxcjk-1013
- KXJ2109 ACPI HID.
- KIOX010A ACPI HID.
New features
* ad5933
- Explicit DT binding.
* ad2s90
- Explicit DT binding including dropping spi setup that is done via dt
in favour of verifying the settings form DT.
* adt7316
- Explicit DT binding and support for gpio, irq_flags etc.
* stm32-adc
- Runtime power management.
Minor fixes and cleanups
* core
- Protect against missing info structure.
* ad2s90
- SPDX
- Add documentation fo the mutex.
* ad7280a
- Check allocation failure.
- Fix an accidental replacement of an error return.
* adt7316
- Switch some variables to be local and rename for consistency with other
drivers.
- Revert a false handling of 0 as an error introduced earlier this cycle.
* bmi160
- Use devm functions throughout probe() to avoid need for remove().
* hid-sensor-hub
- White space cleanup.
* hts221
- MAINTAINERS entry.
* lis302
- Use generic name in the DT binding doc.
* Messon-saradc
- Check for allocation error.
- Fix some presented clock names that break clk debugfs.
* qcom-spmi-adc
- A fix for initialization of the prescale property. Came late in the
cycle, so merge window is probably the best route for this.
* st_lsm6dsx
- Allow for variable read length to support wider range of slave devices.
* tag 'iio-for-4.21b' of git://git.kernel.org/pub/scm/linux/kernel/git/jic23/iio: (37 commits)
iio: adc: qcom-spmi-adc5: Initialize prescale properly
dt-bindings: iio: adc: exynos-adc: Add S5PV210 variant
iio: adc: Allow selection of Exynos ADC on S5PV210
iio: adc: exynos-adc: Add S5PV210 variant
iio: bmi160: use all devm functions in probe
iio: dac: ad5686: fix bit shift read register
iio:dac:ad5686: Add AD5310R support
Revert "Staging: iio: adt7316: Add an extra check for 'ret' equals to 0"
dt-bindings: iio: accel: use a generic node name for lis302
iio: core: check 'info' value before registering the device
staging: iio: adc: ad7280a: fix overwrite of the returned value
staging: iio: adc: ad7280a: check for devm_kasprint() failure
iio: humidity: hts221: add entry in MAINTAINERS file
iio: magnetometer: ak8975: Add the "AKM9911" ACPI HID
staging:iio:ad2s90: Move out of staging
staging:iio:ad2s90: Add comment to device state mutex
staging:iio:ad2s90: Replace license text w/ SPDX identifier
dt-bindings:iio:resolver: Add docs for ad2s90
staging:iio:ad2s90: Add max frequency check at probe
staging:iio:ad2s90: Remove spi setup that should be done via dt
...
This HID is used on the ASUS MeMO Pad 7 (ME176C) tablet.
Signed-off-by: Stephan Gerhold <stephan@gerhold.net>
Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
PNI RM3100 is a high resolution, large signal immunity magnetometer,
composed of 3 single sensors and a processing chip with a MagI2C
interface.
Following functions are available:
- Single-shot measurement from
/sys/bus/iio/devices/iio:deviceX/in_magn_{axis}_raw
- Triggerd buffer measurement.
- DRDY pin for data ready trigger.
- Both i2c and spi interface are supported.
- Both interrupt and polling measurement is supported, depends on if
the 'interrupts' in DT is declared.
Signed-off-by: Song Qiang <songqiang1304521@gmail.com>
Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
Before this commit sensor_hub_input_attr_get_raw_value() failed to take
the signedness of 16 and 8 bit values into account, returning e.g.
65436 instead of -100 for the z-axis reading of an accelerometer.
This commit adds a new is_signed parameter to the function and makes all
callers pass the appropriate value for this.
While at it, this commit also fixes up some neighboring lines where
statements were needlessly split over 2 lines to improve readability.
Signed-off-by: Hans de Goede <hdegoede@redhat.com>
Acked-by: Srinivas Pandruvada <srinivas.pandruvada@linux.intel.com>
Acked-by: Benjamin Tissoires <benjamin.tissoires@redhat.com>
Cc: <Stable@vger.kernel.org>
Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
LIS3MDL and LSM9DS1 are missing BDU settings in their register maps, so add
them. I don't have a LIS3MDL sensor to test, but this works correctly on
the LSM9DS1, which has the same register map.
Signed-off-by: Martin Kelly <martin@martingkelly.com>
Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
Update the sensor settings to support the LSM9DS1 sensor. Although the
LSM9DS1 accelerometer and gyroscope are coupled together to use the same
FIFO, the magnetometer is separate and can be cleanly supported without
refactoring the existing driver.
Signed-off-by: Martin Kelly <martin@martingkelly.com>
Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
Add a comment clarifying better when to use <device_name> vs
<device_name>-magn in compatibility strings.
Signed-off-by: Martin Kelly <martin@martingkelly.com>
Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
Currently, we enable the device before we enable the device trigger. At
high frequencies, this can cause interrupts that don't yet have a poll
function associated with them and are thus treated as spurious. At high
frequencies with level interrupts, this can even cause an interrupt storm
of repeated spurious interrupts (~100,000 on my Beagleboard with the
LSM9DS1 magnetometer). If these repeat too much, the interrupt will get
disabled and the device will stop functioning.
To prevent these problems, enable the device prior to enabling the device
trigger, and disable the divec prior to disabling the trigger. This means
there's no window of time during which the device creates interrupts but we
have no trigger to answer them.
Fixes: 90efe05562 ("iio: st_sensors: harden interrupt handling")
Signed-off-by: Martin Kelly <martin@martingkelly.com>
Tested-by: Denis Ciocca <denis.ciocca@st.com>
Cc: <Stable@vger.kernel.org>
Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
Miscellaneous cleanup to fix minor consistency, grammar, and spelling
issues.
Signed-off-by: Martin Kelly <martin@martingkelly.com>
Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
Adds the ability to run the Mag3110 in continuous mode to speed up the
sampling rate.
Depending on the sampling rate requested the device can be put in or out
of continuous mode automatically.
Shifting out of continuous mode requires a potential 1 / ODR wait which
is also implemented.
Modified the sleep method when data is not ready to allow for
sampling > 50sps to work.
Signed-off-by: Richard Tresidder <rtresidd@electromag.com.au>
Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
The function magn_3d_read_raw has a switch statement handling multiple
cases per channel. The first case statement uses the magic number 0,
which means IIO_CHAN_INFO_RAW. Additionally, the iio_chan_spec for
magn_3d_channels is configured to be IIO_CHAN_INFO_RAW. Therefore, this
patch replaces the magic number 0 for the appropriate IIO_CHAN_INFO_RAW.
Signed-off-by: Rodrigo Siqueira <rodrigosiqueiramelo@gmail.com>
Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
Add new ACPI ID for ak9911 as had been found on prototype board.
Signed-off-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
Here is the "big" staging and IIO driver update for 4.15-rc1.
Lots and lots of little changes, almost all minor code cleanups as the
Outreachy application process happened during this development cycle.
Also happened was a lot of IIO driver activity, and the typec USB code
moving out of staging to drivers/usb (same commits are in the USB tree
on a persistent branch to not cause merge issues.)
Overall, it's a wash, I think we added a few hundred more lines than
removed, but really only a few thousand were modified at all.
All of these have been in linux-next for a while. There might be a
merge issue with Al's vfs tree in the pi433 driver (take his changes,
they are always better), and the media tree with some of the odd atomisp
cleanups (take the media tree's version).
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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Merge tag 'staging-4.15-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/staging
Pull staging and IIO updates from Greg KH:
"Here is the "big" staging and IIO driver update for 4.15-rc1.
Lots and lots of little changes, almost all minor code cleanups as the
Outreachy application process happened during this development cycle.
Also happened was a lot of IIO driver activity, and the typec USB code
moving out of staging to drivers/usb (same commits are in the USB tree
on a persistent branch to not cause merge issues.)
Overall, it's a wash, I think we added a few hundred more lines than
removed, but really only a few thousand were modified at all.
All of these have been in linux-next for a while. There might be a
merge issue with Al's vfs tree in the pi433 driver (take his changes,
they are always better), and the media tree with some of the odd
atomisp cleanups (take the media tree's version)"
* tag 'staging-4.15-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/staging: (507 commits)
staging: lustre: add SPDX identifiers to all lustre files
staging: greybus: Remove redundant license text
staging: greybus: add SPDX identifiers to all greybus driver files
staging: ccree: simplify ioread/iowrite
staging: ccree: simplify registers access
staging: ccree: simplify error handling logic
staging: ccree: remove dead code
staging: ccree: handle limiting of DMA masks
staging: ccree: copy IV to DMAable memory
staging: fbtft: remove redundant initialization of buf
staging: sm750fb: Fix parameter mistake in poke32
staging: wilc1000: Fix bssid buffer offset in Txq
staging: fbtft: fb_ssd1331: fix mirrored display
staging: android: Fix checkpatch.pl error
staging: greybus: loopback: convert loopback to use generic async operations
staging: greybus: operation: add private data with get/set accessors
staging: greybus: loopback: Fix iteration count on async path
staging: greybus: loopback: Hold per-connection mutex across operations
staging: greybus/loopback: use ktime_get() for time intervals
staging: fsl-dpaa2/eth: Extra headroom in RX buffers
...
Many source files in the tree are missing licensing information, which
makes it harder for compliance tools to determine the correct license.
By default all files without license information are under the default
license of the kernel, which is GPL version 2.
Update the files which contain no license information with the 'GPL-2.0'
SPDX license identifier. The SPDX identifier is a legally binding
shorthand, which can be used instead of the full boiler plate text.
This patch is based on work done by Thomas Gleixner and Kate Stewart and
Philippe Ombredanne.
How this work was done:
Patches were generated and checked against linux-4.14-rc6 for a subset of
the use cases:
- file had no licensing information it it.
- file was a */uapi/* one with no licensing information in it,
- file was a */uapi/* one with existing licensing information,
Further patches will be generated in subsequent months to fix up cases
where non-standard license headers were used, and references to license
had to be inferred by heuristics based on keywords.
The analysis to determine which SPDX License Identifier to be applied to
a file was done in a spreadsheet of side by side results from of the
output of two independent scanners (ScanCode & Windriver) producing SPDX
tag:value files created by Philippe Ombredanne. Philippe prepared the
base worksheet, and did an initial spot review of a few 1000 files.
The 4.13 kernel was the starting point of the analysis with 60,537 files
assessed. Kate Stewart did a file by file comparison of the scanner
results in the spreadsheet to determine which SPDX license identifier(s)
to be applied to the file. She confirmed any determination that was not
immediately clear with lawyers working with the Linux Foundation.
Criteria used to select files for SPDX license identifier tagging was:
- Files considered eligible had to be source code files.
- Make and config files were included as candidates if they contained >5
lines of source
- File already had some variant of a license header in it (even if <5
lines).
All documentation files were explicitly excluded.
The following heuristics were used to determine which SPDX license
identifiers to apply.
- when both scanners couldn't find any license traces, file was
considered to have no license information in it, and the top level
COPYING file license applied.
For non */uapi/* files that summary was:
SPDX license identifier # files
---------------------------------------------------|-------
GPL-2.0 11139
and resulted in the first patch in this series.
If that file was a */uapi/* path one, it was "GPL-2.0 WITH
Linux-syscall-note" otherwise it was "GPL-2.0". Results of that was:
SPDX license identifier # files
---------------------------------------------------|-------
GPL-2.0 WITH Linux-syscall-note 930
and resulted in the second patch in this series.
- if a file had some form of licensing information in it, and was one
of the */uapi/* ones, it was denoted with the Linux-syscall-note if
any GPL family license was found in the file or had no licensing in
it (per prior point). Results summary:
SPDX license identifier # files
---------------------------------------------------|------
GPL-2.0 WITH Linux-syscall-note 270
GPL-2.0+ WITH Linux-syscall-note 169
((GPL-2.0 WITH Linux-syscall-note) OR BSD-2-Clause) 21
((GPL-2.0 WITH Linux-syscall-note) OR BSD-3-Clause) 17
LGPL-2.1+ WITH Linux-syscall-note 15
GPL-1.0+ WITH Linux-syscall-note 14
((GPL-2.0+ WITH Linux-syscall-note) OR BSD-3-Clause) 5
LGPL-2.0+ WITH Linux-syscall-note 4
LGPL-2.1 WITH Linux-syscall-note 3
((GPL-2.0 WITH Linux-syscall-note) OR MIT) 3
((GPL-2.0 WITH Linux-syscall-note) AND MIT) 1
and that resulted in the third patch in this series.
- when the two scanners agreed on the detected license(s), that became
the concluded license(s).
- when there was disagreement between the two scanners (one detected a
license but the other didn't, or they both detected different
licenses) a manual inspection of the file occurred.
- In most cases a manual inspection of the information in the file
resulted in a clear resolution of the license that should apply (and
which scanner probably needed to revisit its heuristics).
- When it was not immediately clear, the license identifier was
confirmed with lawyers working with the Linux Foundation.
- If there was any question as to the appropriate license identifier,
the file was flagged for further research and to be revisited later
in time.
In total, over 70 hours of logged manual review was done on the
spreadsheet to determine the SPDX license identifiers to apply to the
source files by Kate, Philippe, Thomas and, in some cases, confirmation
by lawyers working with the Linux Foundation.
Kate also obtained a third independent scan of the 4.13 code base from
FOSSology, and compared selected files where the other two scanners
disagreed against that SPDX file, to see if there was new insights. The
Windriver scanner is based on an older version of FOSSology in part, so
they are related.
Thomas did random spot checks in about 500 files from the spreadsheets
for the uapi headers and agreed with SPDX license identifier in the
files he inspected. For the non-uapi files Thomas did random spot checks
in about 15000 files.
In initial set of patches against 4.14-rc6, 3 files were found to have
copy/paste license identifier errors, and have been fixed to reflect the
correct identifier.
Additionally Philippe spent 10 hours this week doing a detailed manual
inspection and review of the 12,461 patched files from the initial patch
version early this week with:
- a full scancode scan run, collecting the matched texts, detected
license ids and scores
- reviewing anything where there was a license detected (about 500+
files) to ensure that the applied SPDX license was correct
- reviewing anything where there was no detection but the patch license
was not GPL-2.0 WITH Linux-syscall-note to ensure that the applied
SPDX license was correct
This produced a worksheet with 20 files needing minor correction. This
worksheet was then exported into 3 different .csv files for the
different types of files to be modified.
These .csv files were then reviewed by Greg. Thomas wrote a script to
parse the csv files and add the proper SPDX tag to the file, in the
format that the file expected. This script was further refined by Greg
based on the output to detect more types of files automatically and to
distinguish between header and source .c files (which need different
comment types.) Finally Greg ran the script using the .csv files to
generate the patches.
Reviewed-by: Kate Stewart <kstewart@linuxfoundation.org>
Reviewed-by: Philippe Ombredanne <pombredanne@nexb.com>
Reviewed-by: Thomas Gleixner <tglx@linutronix.de>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Add SPI Serial Interface Mode (SIM) register information to
LIS3MDL magn sensor
Signed-off-by: Lorenzo Bianconi <lorenzo.bianconi@st.com>
Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
Separate data-ready configuration parameters for INT1 and INT2 pins in
st_sensor_data_ready_irq data structure. That change will be use to
properly support LIS2DW12 accel sensor.
Signed-off-by: Lorenzo Bianconi <lorenzo.bianconi@st.com>
Reviewed-by: Linus Walleij <linus.walleij@linaro.org>
Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
Introduce register mask for data-ready status register since
pressure sensors (e.g. LPS22HB) export just two channels
(BIT(0) and BIT(1)) and BIT(2) is marked reserved while in
st_sensors_new_samples_available() value read from status register
is masked using 0x7.
Moreover do not mask status register using active_scan_mask since
now status value is properly masked and if the result is not zero the
interrupt has to be consumed by the driver. This fix an issue on LPS25H
and LPS331AP where channel definition is swapped respect to status
register.
Furthermore that change allows to properly support new devices
(e.g LIS2DW12) that report just ZYXDA (data-ready) field in status register
to figure out if the interrupt has been generated by the device.
Fixes: 97865fe413 (iio: st_sensors: verify interrupt event to status)
Signed-off-by: Lorenzo Bianconi <lorenzo.bianconi@st.com>
Reviewed-by: Linus Walleij <linus.walleij@linaro.org>
Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
Note there is a misc driver drop in here given we have support
in IIO and the feeling is no one will care.
A large part of this series is a boiler plate removal series avoiding
the need to explicitly provide THIS_MODULE in various locations.
It's very dull but touches all drivers.
New device support
* ad5446
- add ids to support compatible parts DAC081S101, DAC101S101,
DAC121S101.
- add the dac7512 id and drop the misc driver as feeling is no
one is using it (was introduced for a board that is long obsolete)
* mt6577
- add bindings for mt2712 which is fully compatible with other
supported parts.
* st_pressure
- add support for LPS33HW and LPS35HW with bindings (ids mostly).
New features
* ccs811
- Add support for the data ready trigger.
* mma8452
- remove artifical restriction on supporting multiple event types
at the same time.
* tcs3472
- support out of threshold events
Core and tree wide cleanup
* Use macro magic to remove the need to provide THIS_MODULE as part of
struct iio_info or struct iio_trigger_ops. This is similar to
work done in a number of other subsystems (e.g. i2c, spi).
All drivers are fixed and then the fields in these structures are
removed.
This will cause build failures for out of tree drivers and any
new drivers that cross with this work going into the kernel.
Note mostly done with a coccinelle patch, included in the series
on the mailing list but not merged as the fields no longer exist
in the structures so the any hold outs will cause a build failure.
Cleanups
* ads1015
- avoid writing config register when it doesn't change.
- add 10% to conversion wait time as it seems it is sometimes
a little small.
* ade7753
- replace use of core mlock with a local lock. This is part of a
long term effort to make the use of mlock opaque and single
purpose.
* ade7759
- expand the use of buf_lock to cover previous mlock cases. This
is a slightly nicer solution to the same issue as in ade7753.
* cros_ec
- drop an unused variable
* inv_mpu6050
- add a missing break in a switch for consistency - not actual
bug,
- make some local arrays static to save on object code size.
* max5481
- drop manual setting of the spi module owner as handled by the
spi core.
* max5487
- drop manual setting of the spi module owner as handled by the
spi core.
* max9611
- drop explicit setting of the i2c module owner as handled by
the i2c core.
* mcp320x
- speed up reads on single channel devices,
- drop unused of_device_id data elements,
- document the struct mcp320x,
- improve binding docs to reflect restrictions on spi setup and
to make it explicit that the reference regulator is needed.
* mma8452
- symbolic to octal permissions,
- unsigned to unsigned int.
* st_lsm6dsx
- avoid setting odr values multiple times,
- drop config of LIR as it is only ever set to the existing
defaults,
- drop rounding configuration as it only ever matches the defaults.
* ti-ads8688
- drop manual setting of the spi module owner as handled by the
spi core.
* tsl2x7x
- constify the i2c_device_id,
- cleanup limit checks to avoid static checker warnings (and generally
have nicer code).
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Merge tag 'iio-for-4.15a' of git://git.kernel.org/pub/scm/linux/kernel/git/jic23/iio into staging-next
Jonathan writes:
Round one of new device support, features and cleanup for IIO in the 4.15 cycle.
Note there is a misc driver drop in here given we have support
in IIO and the feeling is no one will care.
A large part of this series is a boiler plate removal series avoiding
the need to explicitly provide THIS_MODULE in various locations.
It's very dull but touches all drivers.
New device support
* ad5446
- add ids to support compatible parts DAC081S101, DAC101S101,
DAC121S101.
- add the dac7512 id and drop the misc driver as feeling is no
one is using it (was introduced for a board that is long obsolete)
* mt6577
- add bindings for mt2712 which is fully compatible with other
supported parts.
* st_pressure
- add support for LPS33HW and LPS35HW with bindings (ids mostly).
New features
* ccs811
- Add support for the data ready trigger.
* mma8452
- remove artifical restriction on supporting multiple event types
at the same time.
* tcs3472
- support out of threshold events
Core and tree wide cleanup
* Use macro magic to remove the need to provide THIS_MODULE as part of
struct iio_info or struct iio_trigger_ops. This is similar to
work done in a number of other subsystems (e.g. i2c, spi).
All drivers are fixed and then the fields in these structures are
removed.
This will cause build failures for out of tree drivers and any
new drivers that cross with this work going into the kernel.
Note mostly done with a coccinelle patch, included in the series
on the mailing list but not merged as the fields no longer exist
in the structures so the any hold outs will cause a build failure.
Cleanups
* ads1015
- avoid writing config register when it doesn't change.
- add 10% to conversion wait time as it seems it is sometimes
a little small.
* ade7753
- replace use of core mlock with a local lock. This is part of a
long term effort to make the use of mlock opaque and single
purpose.
* ade7759
- expand the use of buf_lock to cover previous mlock cases. This
is a slightly nicer solution to the same issue as in ade7753.
* cros_ec
- drop an unused variable
* inv_mpu6050
- add a missing break in a switch for consistency - not actual
bug,
- make some local arrays static to save on object code size.
* max5481
- drop manual setting of the spi module owner as handled by the
spi core.
* max5487
- drop manual setting of the spi module owner as handled by the
spi core.
* max9611
- drop explicit setting of the i2c module owner as handled by
the i2c core.
* mcp320x
- speed up reads on single channel devices,
- drop unused of_device_id data elements,
- document the struct mcp320x,
- improve binding docs to reflect restrictions on spi setup and
to make it explicit that the reference regulator is needed.
* mma8452
- symbolic to octal permissions,
- unsigned to unsigned int.
* st_lsm6dsx
- avoid setting odr values multiple times,
- drop config of LIR as it is only ever set to the existing
defaults,
- drop rounding configuration as it only ever matches the defaults.
* ti-ads8688
- drop manual setting of the spi module owner as handled by the
spi core.
* tsl2x7x
- constify the i2c_device_id,
- cleanup limit checks to avoid static checker warnings (and generally
have nicer code).
Note this includes fixes from recent merge window. As such the tree
is based on top of a prior staging/staging-next tree.
* iio core
- return and error for a failed read_reg debugfs call rather than
eating the error.
* ad7192
- Use the dedicated reset function in the ad_sigma_delta library
instead of an spi transfer with the data on the stack which
could cause problems with DMA.
* ad7793
- Implement a dedicate reset function in the ad_sigma_delta library
and use it to correctly reset this part.
* bme280
- ctrl_reg write must occur after any register writes
for updates to take effect.
* mcp320x
- negative voltage readout was broken.
- Fix an oops on module unload due to spi_set_drvdata not being called
in probe.
* st_magn
- Fix the data ready line configuration for the lis3mdl. It is not
configurable so the st_magn core was assuming it didn't exist
and so wasn't consuming interrupts resulting in an unhandled
interrupt.
* stm32-adc
- off by one error on max channels checking.
* stm32-timer
- preset should not be buffered - reorganising register writes avoids
this.
- fix a corner case in which write preset goes wrong when a timer is
used first as a trigger then as a counter with preset. Odd case but
you never know.
* ti-ads1015
- Fix setting of comparator polarity by fixing bitfield definition.
* twl4030
- Error path handling fix to cleanup in event of regulator
registration failure.
- Disable the vusb3v1 regulator correctly in error handling
- Don't paper over a regulator enable failure.
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Merge tag 'iio-fixes-for-4.14a' of git://git.kernel.org/pub/scm/linux/kernel/git/jic23/iio into staging-linus
Jonathan writes:
First round of IIO fixes for the 4.14 cycle
Note this includes fixes from recent merge window. As such the tree
is based on top of a prior staging/staging-next tree.
* iio core
- return and error for a failed read_reg debugfs call rather than
eating the error.
* ad7192
- Use the dedicated reset function in the ad_sigma_delta library
instead of an spi transfer with the data on the stack which
could cause problems with DMA.
* ad7793
- Implement a dedicate reset function in the ad_sigma_delta library
and use it to correctly reset this part.
* bme280
- ctrl_reg write must occur after any register writes
for updates to take effect.
* mcp320x
- negative voltage readout was broken.
- Fix an oops on module unload due to spi_set_drvdata not being called
in probe.
* st_magn
- Fix the data ready line configuration for the lis3mdl. It is not
configurable so the st_magn core was assuming it didn't exist
and so wasn't consuming interrupts resulting in an unhandled
interrupt.
* stm32-adc
- off by one error on max channels checking.
* stm32-timer
- preset should not be buffered - reorganising register writes avoids
this.
- fix a corner case in which write preset goes wrong when a timer is
used first as a trigger then as a counter with preset. Odd case but
you never know.
* ti-ads1015
- Fix setting of comparator polarity by fixing bitfield definition.
* twl4030
- Error path handling fix to cleanup in event of regulator
registration failure.
- Disable the vusb3v1 regulator correctly in error handling
- Don't paper over a regulator enable failure.
Data-ready line in LIS3MDL is routed to drdy pin and it is not possible
to select a different INT pin. st_sensors_set_dataready_irq() assumes
that if drdy int address is not exported in register map, irq trigger
is not supported by the sensor and hw_irq_trigger is always false.
Based on this configuration st_sensors_irq_thread does not consume
generated interrupt causing an unhandled irq.
Fix this taking into account status register address in
st_sensors_set_dataready_irq()
Fixes: 90efe05562 (iio: st_sensors: harden interrupt handling)
Signed-off-by: Lorenzo Bianconi <lorenzo.bianconi@st.com>
Cc: <Stable@vger.kernel.org>
Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
The equivalent of both of these are now done via macro magic when
the relevant register calls are made. The actual structure
elements will shortly go away.
Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
Reviewed-by: Lars-Peter Clausen <lars@metafoo.de>
Use AMI306 calibration data for randomness and debugging.
Signed-off-by: Michał Mirosław <mirq-linux@rere.qmqm.pl>
Reviewed-by: Linus Walleij <linus.walleij@linaro.org>
Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
Remove IRQ active low support for LSM303AGR since the sensor does not
support that capability for data-ready line
Fixes: a9fd053b56 (iio: st_sensors: support active-low interrupts)
Signed-off-by: Lorenzo Bianconi <lorenzo.bianconi@st.com>
Reviewed-by: Linus Walleij <linus.walleij@linaro.org>
Cc: <Stable@vger.kernel.org>
Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
Reading INT_CLEAR has side effects - disallow reading it via debugfs.
Signed-off-by: Michał Mirosław <mirq-linux@rere.qmqm.pl>
Reviewed-by: Linus Walleij <linus.walleij@linaro.org>
Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
Mix device-specific data into randomness pool.
Signed-off-by: Michał Mirosław <mirq-linux@rere.qmqm.pl>
Reviewed-by: Linus Walleij <linus.walleij@linaro.org>
Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
Add support for AMI306 magnetometer - very similar to AMI305.
Signed-off-by: Michał Mirosław <mirq-linux@rere.qmqm.pl>
Reviewed-by: Linus Walleij <linus.walleij@linaro.org>
Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
add support to STMicroelectronics LIS2MDL magnetometer in
st_magn framework
http://www.st.com/resource/en/datasheet/lis2mdl.pdf
Signed-off-by: Lorenzo Bianconi <lorenzo.bianconi@st.com>
Reviewed-by: Linus Walleij <linus.walleij@linaro.org>
Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
Add device tree support for LIS3MDL and LSM303AGR magnetometer sensors
Signed-off-by: Lorenzo Bianconi <lorenzo.bianconi@st.com>
Reviewed-by: Linus Walleij <linus.walleij@linaro.org>
Signed-off-by: Jonathan Cameron <jic23@kernel.org>
Don't inflate the kernel size with data that isn't used. The conditional
declaration also fixes the following warning when building with clang:
drivers/iio/magnetometer/ak8975.c:704:36: error: variable 'ak_acpi_match'
is not needed and will not be emitted
[-Werror,-Wunneeded-internal-declaration]
Signed-off-by: Matthias Kaehlcke <mka@chromium.org>
Acked-by: Linus Walleij <linus.walleij@linaro.org>
Signed-off-by: Jonathan Cameron <jic23@kernel.org>
Move st_sensors_of_i2c_probe() in st_sensors_core and rename it in
st_sensors_of_name_probe(). That change is necessary to add device-tree
support in spi code otherwise the rest of the autodetection will fail
since spi->modalias (and indio_dev->name) will be set using compatible
string value that differs from standard sensor name
Signed-off-by: Lorenzo Bianconi <lorenzo.bianconi@st.com>
Signed-off-by: Jonathan Cameron <jic23@kernel.org>
Enable multiread by default for LIS3MDL since using I2C interface
the subaddr Msb is used to automatically increase the slave address
during multiple data read/write. In the same way, using SPI interface,
bit 1 in register address is used to enable auto-increment of the slave
address in multiple read/write.
Fixes: 872e79add7 (iio:magn: Add STMicroelectronics magn driver)
Signed-off-by: Lorenzo Bianconi <lorenzo.bianconi@st.com>
Signed-off-by: Jonathan Cameron <jic23@kernel.org>
Remove LSM303DLHC, LSM303DLM from st_magn_id_table since LSM303DL series
does not support spi interface
Fixes: 872e79add7 (iio: magn: Add STMicroelectronics magn driver)
Signed-off-by: Lorenzo Bianconi <lorenzo.bianconi@st.com>
Signed-off-by: Jonathan Cameron <jic23@kernel.org>
The driver doesn't have a struct of_device_id table but supported devices
are registered via Device Trees. This is working on the assumption that a
I2C device registered via OF will always match a legacy I2C device ID and
that the MODALIAS reported will always be of the form i2c:<device>.
But this could change in the future so the correct approach is to have an
OF device ID table if the devices are registered via OF.
Signed-off-by: Javier Martinez Canillas <javier@osg.samsung.com>
Signed-off-by: Jonathan Cameron <jic23@kernel.org>
The driver doesn't have a struct of_device_id table but supported devices
are registered via Device Trees. This is working on the assumption that a
I2C device registered via OF will always match a legacy I2C device ID and
that the MODALIAS reported will always be of the form i2c:<device>.
But this could change in the future so the correct approach is to have an
OF device ID table if the devices are registered via OF.
Signed-off-by: Javier Martinez Canillas <javier@osg.samsung.com>
Signed-off-by: Jonathan Cameron <jic23@kernel.org>
Even if bus is not hot-pluggable, devices can be unbound from the
driver via sysfs, so we should not be using __exit annotations on
remove() methods. The only exception is drivers registered with
platform_driver_probe() which specifically disables sysfs bind/unbind
attributes.
Signed-off-by: Dmitry Torokhov <dmitry.torokhov@gmail.com>
Reviewed-by: Linus Walleij <linus.walleij@linaro.org>
Cc: <stable@vger.kernel.org>
Signed-off-by: Jonathan Cameron <jic23@kernel.org>
Driver was checking for direct mode but not locking it. Use
claim/release helper functions to guarantee the device stays
in direct mode during raw writes.
Signed-off-by: Alison Schofield <amsfield22@gmail.com>
Acked-by: Peter Meerwald-Stadler <pmeerw@pmeerw.net>
Signed-off-by: Jonathan Cameron <jic23@kernel.org>
At the end of the delay loop timeout will always be zero
and hence the check for !timeout will always be true. Remove
the redundant check and the redundant return 0 at the end of
the function.
Fixes CoverityScan CID#1357168 ("Logically dead code")
Signed-off-by: Colin Ian King <colin.king@canonical.com>
Reviewed-by: Linus Walleij <linus.walleij@linaro.org>
Signed-off-by: Jonathan Cameron <jic23@kernel.org>
There are 2 usage types (Magnetic Flux and Heading data field) for HID
compass sensor, thus the values of offset, scale, and sensitivity should
be separated according to their respective usage type. The changes made
are as below:
1. Hysteresis: A struct hid_sensor_common rot_attributes is created in
struct magn_3d_state to contain the sensitivity for IIO_ROT.
2. Scale: scale_pre_decml and scale_post_decml are separated for IIO_MAGN
and IIO_ROT.
3. Offset: Same as scale, value_offset is separated for IIO_MAGN and
IIO_ROT.
For sensitivity, HID_USAGE_SENSOR_ORIENT_MAGN_FLUX and
HID_USAGE_SENSOR_ORIENT_MAGN_HEADING are used for sensivitity fields based
on the HID Sensor Usages specifications. Hence, these changes are added on
the sensitivity field.
Signed-off-by: Ooi, Joyce <joyce.ooi@intel.com>
Acked-by: Srinivas Pandruvada <srinivas.pandruvada@linux.intel.com>
Signed-off-by: Jonathan Cameron <jic23@kernel.org>
We have #defines for all the individual sensor registers and
value/mask pairs #defined at the top of the file and used at
exactly one spot.
This is usually good if the #defines give a meaning to the
opaque magic numbers.
However in this case, the semantic meaning is inherent in the
name of the C99-addressable fields, and that means duplication
of information, and only makes the code hard to maintain since
you every time have to add a new #define AND update the site
where it is to be used.
Get rid of the #defines and just open code the values into the
appropriate struct elements. Make sure to explicitly address
the .hz and .value fields in the st_sensor_odr_avl struct
so that the meaning of all values is clear.
This patch is purely syntactic should have no semantic effect.
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
Signed-off-by: Jonathan Cameron <jic23@kernel.org>
Fixes two cases of 'cast to restricted __le16' as reported by sparse.
Signed-off-by: Ico Doornekamp <ico@pruts.nl>
Signed-off-by: Jonathan Cameron <jic23@kernel.org>
Remove .owner field if calls are used which set it automatically.
Generated by: scripts/coccinelle/api/platform_no_drv_owner.cocci
Signed-off-by: Wei Yongjun <weiyongjun1@huawei.com>
Acked-by: Linus Walleij <linus.walleij@linaro.org>
Signed-off-by: Jonathan Cameron <jic23@kernel.org>
The ak8974_configure() function is used only from the PM code,
but that can be hidden when CONFIG_PM is disabled:
drivers/iio/magnetometer/ak8974.c:201:12: error: 'ak8974_configure' defined but not used [-Werror=unused-function]
This replaces the #ifdef with a __maybe_unused annotation, which
will work correctly in all configurations and avoid the warning,
as the compiler can now see where ak8974_configure is called from.
Signed-off-by: Arnd Bergmann <arnd@arndb.de>
Fixes: 7c94a8b2ee ("iio: magn: add a driver for AK8974")
Signed-off-by: Jonathan Cameron <jic23@kernel.org>
Driver was checking for direct mode but not locking it. Use
claim/release helper functions to guarantee the device stays
in direct mode during raw reads.
Signed-off-by: Alison Schofield <amsfield22@gmail.com>
Cc: Daniel Baluta <daniel.baluta@gmail.com>
Signed-off-by: Jonathan Cameron <jic23@kernel.org>
This adds a driver for the Asahi Kasei AK8974 and its sibling
AMI305 magnetometers. It was deployed on scale in 2009 on a
multitude of devices. It is distincly different from AK8973
and AK8975 and needs its own driver.
This patch is based on the long lost work of Samu Onkalo at Nokia,
who made a misc character device driver for the Maemo/MeeGo Nokia
devices, before the time of the IIO subsystem. It was mounted in e.g.
the Nokia N950, N8, N86, N97 etc. It is also mounted on the
ST-Ericsson HREF reference designs.
It works nicely in sysfs:
$ cat in_magn_x_raw && cat in_magn_y_raw && cat in_magn_z_raw
-55
-101
161
And with buffered reads using a simple HRTimer trigger:
$ generic_buffer -c10 -a -n ak8974 -t foo
iio device number being used is 3
iio trigger number being used is 2
No channels are enabled, enabling all channels
Enabling: in_magn_x_en
Enabling: in_magn_y_en
Enabling: in_magn_z_en
Enabling: in_timestamp_en
/sys/bus/iio/devices/iio:device3 foo
-58.000000 -102.000000 157.000000 946684970985321044
-60.000000 -98.000000 159.000000 946684971012237548
-60.000000 -106.000000 163.000000 946684971032257080
-62.000000 -94.000000 169.000000 946684971052185058
-58.000000 -98.000000 163.000000 946684971072204589
-54.000000 -100.000000 163.000000 946684971092224121
-53.000000 -103.000000 164.000000 946684971112731933
-50.000000 -102.000000 165.000000 946684971132232666
-61.000000 -101.000000 164.000000 946684971152191162
-57.000000 -99.000000 168.000000 946684971172210693
Disabling: in_magn_x_en
Disabling: in_magn_y_en
Disabling: in_magn_z_en
Disabling: in_timestamp_en
I cannot currently scale these raw values to gauss. This is
because of lack of documentation. I have sent a request for
a datasheet to Asahi Kasei.
The driver can optionally use a DRDY line IRQ to capture data,
else it will sleep and poll.
Cc: Samu Onkalo <samu.onkalo@intel.com>
Cc: Sebastian Reichel <sre@kernel.org>
Cc: Peter Meerwald-Stadler <pmeerw@pmeerw.net>
Tested-By: Sebastian Reichel <sre@kernel.org>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
Signed-off-by: Jonathan Cameron <jic23@kernel.org>
This adds runtime PM support to the AK8975 driver. It solves two
problems:
- After reading the first value the chip was left in MODE_ONCE,
meaning (presumably) it may be consuming more power. Now the
runtime PM hooks kick in and set it to POWER_DOWN.
- Regulators were simply enabled and left on, making it
impossible to turn the power consuming regulators off because
of the increased refcount. We now disable the regulators at
autosuspend.
- We also handle system suspend: by using pm_runtime_force_suspend()
and pm_runtime_force_resume() from the system PM sleep hooks,
the runtime PM code is managing the power also for this case.
It is currently not completely optimal: when the system resumes
the AK8975 goes into active mode even if noone is going to use
it: currently the force calls need to be paired, but the runtime
PM people are working on making it possible to leave devices
runtime suspended when coming back from sleep.
Inspired by my work on the BH1780 light sensor driver.
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
Reviewed-by: Ulf Hansson <ulf.hansson@linaro.org>
Signed-off-by: Jonathan Cameron <jic23@kernel.org>
The code was not powering the magnetometer down properly at
remove(): just cutting the regulators without first setting the
device in power off mode. Fix this.
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
Reviewed-by: Ulf Hansson <ulf.hansson@linaro.org>
Signed-off-by: Jonathan Cameron <jic23@kernel.org>
The datasheet actually specifies that we need to wait atleast
500us after powering on the device before trying to set mode.
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
Signed-off-by: Jonathan Cameron <jic23@kernel.org>
Move the regulator_get() calls directly into the probe() function,
keep only the power_on()/power_off() functions to flick the
regulators on/off.
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
Signed-off-by: Jonathan Cameron <jic23@kernel.org>
The AK8975 has two power sources: Vdd (analog voltage supply)
and Vid (digital voltage supply). Optionally also obtain the Vid
supply regulator and enable it.
If an error occurs when enabling one of the regulators: bail out.
Cc: Gregor Boirie <gregor.boirie@parrot.com>
Cc: Richard Leitner <dev@g0hl1n.net>
Cc: Krzysztof Kozlowski <k.kozlowski@samsung.com>
Cc: Lars-Peter Clausen <lars@metafoo.de>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
Signed-off-by: Jonathan Cameron <jic23@kernel.org>
IS_ERR_OR_NULL() should never be used with regulators because
a NULL pointer may be a perfectly valid dummy regulator
We should always succeed to fetch and enable a regulator, but
it may be a dummy. That is fine, so bail out for any real
errors or probe deferrals
Include the error code in the warning print so we know what
kind of problem we're dealing with (for example it is nice to
see if it is a probe deferral).
As we will bail out of probe if the regulator is erroneous,
just issue regulator_disable() on the poweroff path: it will
succeed.
Cc: Mark Brown <broonie@kernel.org>
Cc: Lars-Peter Clausen Lars-Peter Clausen <lars@metafoo.de>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
Signed-off-by: Jonathan Cameron <jic23@kernel.org>
Adds a new per-device sysfs attribute "current_timestamp_clock" to allow
userspace to select a particular POSIX clock for buffered samples and
events timestamping.
Following clocks, as listed in clock_gettime(2), are supported:
CLOCK_REALTIME, CLOCK_MONOTONIC, CLOCK_MONOTONIC_RAW,
CLOCK_REALTIME_COARSE, CLOCK_MONOTONIC_COARSE, CLOCK_BOOTTIME and
CLOCK_TAI.
Signed-off-by: Gregor Boirie <gregor.boirie@parrot.com>
Acked-by: Sanchayan Maity <maitysanchayan@gmail.com>
Signed-off-by: Jonathan Cameron <jic23@kernel.org>
We want the fixes in here, and we can resolve a merge issue in
drivers/iio/industrialio-trigger.c
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
New device support
* ads1015
- add ads1115 support
* bma220 accelerometer
- new driver
- triggered buffer support.
* bmc150
- add bmm150 support.
* bmp280
- bme280 support with addition of humidity channel.
* max5487 potentiometer
- new driver
* MMA7660FC accelerometer.
- New driver
* st-pressure
- support for the lps22hb
* loop trigger.
- This one is *nasty* but we have real applications (parrot drones) where
it is useful. The trigger basically spins as hard as it can firing off
a new trigger each time all triggered devices come back to say they are
done. It doesn't hang a machine even when doing it on a dummy driver.
A lot nicer than having this implemented within lots of device drivers
anyway.
Core stuff
* Add support to create IIO devices via configfs (similar to we did for
triggers a while back) + docs.
* New channel types
- IIO_ELECTRICAL_CONDUCTIVITY
* Couple of MAINTAINERS patches to list the device tree bindings.
* Make trigger ops structure non optional (comment fix). It hasn't been for
an awful long time, but that's not what the description said.
New features
* ak8975
- support adapters that are limited to byte data only by allowing the
emulated block read i2c function that was recently introduced.
* atlas-ph
- support atlas-ec (electrical conductivity sensor)
* bmi160
- add available frequency and scale attributes to make the driver
more user friendly (and avoid having to read the datasheet to know
what will work).
* dummy
- move creation to configfs interface. It's not real hardware so we
are not that worried about the ABI breakage ;)
* mma8452
- oversampling ration support
* nau7802
- expose available gains to make life easier for userspace.
* st-sensors
- allow use of emulation for SMBus block reads as all the st parts support
it.
* ti-ads1015
- list datasheet names to allow their use by inkernel consumers.
* Various module alias additions to help auto probing. Drop one redundant one
as well.
Cleanups
* ad7266, ad7476, ad7887, ad7923, ad799x
- use direct mode claim function rather than open coding it during sensor
read (prevents switching on buffers mid read).
* ad7793, ad7791
- use direct mode claim to prevent frequency changes when buffers running.
* afe440x - These are ABI breaking but the driver requires custom userspace
code to do anything useful anyway and that is still being written and under
control of TI. Ultimately we may have other libraries to do pulse
oximetry with these devices but we aren't aware of any yet.
- kernel-doc format fixes
- drop ifdef fun around of_match_ptr - it's not worth the mess to save
a tiny amount of space.
- drop some unnecessary register initializations.
- drop the weird locked gain modes as they gain us nothing (can just set
all gains separately).
- remove handling of offset attributes seeing as no channels actually have
them (oops)
- Drop the LED3 input channel as it's an alias for ALED2.
- *big one* remove channel names - an experiment that turned out to not
make sense - see patch for details.
- use regmap fields to clean up code.
- tie the tia gain stages to appropriate channels in the ABI as that is
what they really effect. Same with the LED currents.
- cleanout some unused defines and fix a missnamed one.
* atlas-ph
- reorganise to allow support of other similar parts.
* bmc150
- document supported chips in kconfig help.
* jsa1212
- drop an unneeded i2c functionality check for functionality the driver
doesn't use.
* mxs-lradc
- simply touch screen registration code.
- remove the touch screen unregister as all devm based now.
- disable only those channels that are masked in hardware stop (others
are already dealt with elsewhere)
* st-sensors
- unexport st_sensors_get_buffer_element as nothing outside the st-sensors
core driver uses it.
- fix handling of failure to start up regulators.
* tpl0102
- drop an i2c functionality test for features that aren't needed.
* ti-am335x
- use variable name rather than type in sizeof for clarity.
- use SIMPLE_DEV_PM_OPS helper macro to tidy up a bit.
Tools
* Add install / uninstall to makefile. Someone cares, so presumably
some people will find it useful!
* generic_buffer
- rename to iio_generic_buffer to line up with other tools.
- handle cleanup when receiving signals
- Add a --device-num option and a --trigger-num option rather than
relying on naming which doesn't work if you have two of the same part.
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Merge tag 'iio-for-4.8a' of git://git.kernel.org/pub/scm/linux/kernel/git/jic23/iio into staging-next
Jonathan writes:
First round of IIO new device support, features and cleanups for the 4.8 cycle.
New device support
* ads1015
- add ads1115 support
* bma220 accelerometer
- new driver
- triggered buffer support.
* bmc150
- add bmm150 support.
* bmp280
- bme280 support with addition of humidity channel.
* max5487 potentiometer
- new driver
* MMA7660FC accelerometer.
- New driver
* st-pressure
- support for the lps22hb
* loop trigger.
- This one is *nasty* but we have real applications (parrot drones) where
it is useful. The trigger basically spins as hard as it can firing off
a new trigger each time all triggered devices come back to say they are
done. It doesn't hang a machine even when doing it on a dummy driver.
A lot nicer than having this implemented within lots of device drivers
anyway.
Core stuff
* Add support to create IIO devices via configfs (similar to we did for
triggers a while back) + docs.
* New channel types
- IIO_ELECTRICAL_CONDUCTIVITY
* Couple of MAINTAINERS patches to list the device tree bindings.
* Make trigger ops structure non optional (comment fix). It hasn't been for
an awful long time, but that's not what the description said.
New features
* ak8975
- support adapters that are limited to byte data only by allowing the
emulated block read i2c function that was recently introduced.
* atlas-ph
- support atlas-ec (electrical conductivity sensor)
* bmi160
- add available frequency and scale attributes to make the driver
more user friendly (and avoid having to read the datasheet to know
what will work).
* dummy
- move creation to configfs interface. It's not real hardware so we
are not that worried about the ABI breakage ;)
* mma8452
- oversampling ration support
* nau7802
- expose available gains to make life easier for userspace.
* st-sensors
- allow use of emulation for SMBus block reads as all the st parts support
it.
* ti-ads1015
- list datasheet names to allow their use by inkernel consumers.
* Various module alias additions to help auto probing. Drop one redundant one
as well.
Cleanups
* ad7266, ad7476, ad7887, ad7923, ad799x
- use direct mode claim function rather than open coding it during sensor
read (prevents switching on buffers mid read).
* ad7793, ad7791
- use direct mode claim to prevent frequency changes when buffers running.
* afe440x - These are ABI breaking but the driver requires custom userspace
code to do anything useful anyway and that is still being written and under
control of TI. Ultimately we may have other libraries to do pulse
oximetry with these devices but we aren't aware of any yet.
- kernel-doc format fixes
- drop ifdef fun around of_match_ptr - it's not worth the mess to save
a tiny amount of space.
- drop some unnecessary register initializations.
- drop the weird locked gain modes as they gain us nothing (can just set
all gains separately).
- remove handling of offset attributes seeing as no channels actually have
them (oops)
- Drop the LED3 input channel as it's an alias for ALED2.
- *big one* remove channel names - an experiment that turned out to not
make sense - see patch for details.
- use regmap fields to clean up code.
- tie the tia gain stages to appropriate channels in the ABI as that is
what they really effect. Same with the LED currents.
- cleanout some unused defines and fix a missnamed one.
* atlas-ph
- reorganise to allow support of other similar parts.
* bmc150
- document supported chips in kconfig help.
* jsa1212
- drop an unneeded i2c functionality check for functionality the driver
doesn't use.
* mxs-lradc
- simply touch screen registration code.
- remove the touch screen unregister as all devm based now.
- disable only those channels that are masked in hardware stop (others
are already dealt with elsewhere)
* st-sensors
- unexport st_sensors_get_buffer_element as nothing outside the st-sensors
core driver uses it.
- fix handling of failure to start up regulators.
* tpl0102
- drop an i2c functionality test for features that aren't needed.
* ti-am335x
- use variable name rather than type in sizeof for clarity.
- use SIMPLE_DEV_PM_OPS helper macro to tidy up a bit.
Tools
* Add install / uninstall to makefile. Someone cares, so presumably
some people will find it useful!
* generic_buffer
- rename to iio_generic_buffer to line up with other tools.
- handle cleanup when receiving signals
- Add a --device-num option and a --trigger-num option rather than
relying on naming which doesn't work if you have two of the same part.
A slightly bumper set due to travel delaying the pull request and a fair few
issues with the recent merge window patches. Patches all over the place.
The st-sensors one is probably the most involved, but definitly solves the
issues seen. Note there are some other issues around that handler
(and the fact that a lot of boards tie a level interrupt chip to an
edge interrupt only irq chip). These are not regressions however, so
will turn up the slow route.
* core
- iio_trigger_attach_pollfunc had some really badly wrong error handling.
Another nasty triggered whilst chasing down issues with the st sensors
rework below.
* ad5592r
- fix an off by one error when allocating channels.
* am2315
- a stray mutex unlock before we ever take the lock.
* apds9960
- missing a parent in the driver model (which should be the i2c device).
Result is it doesn't turn up under /sys/bus/i2c/devices which some
userspace code uses for repeatable device identification.
* as3935
- ABI usage bug which meant a processed value was reported as raw. Now
reporting scale as well to ensure userspace has the info it needs.
- Don't return processed value via the buffer - it doesn't conform to
the ABI and will overflow in some cases.
- Fix a wrongly sized buffer which would overflow trashing part of the
stack. Also move it onto the heap as part of the fix.
* bh1780
- a missing return after write in debugfs lead to an incorrect read and
a null pointer dereference.
- dereferencing the wrong pointer in suspend and resume leading to
unpredictable results.
- assign a static name to avoid accidentally ending up with no name if
loaded via device tree.
* bmi160
- output data rate for the accelerometer was incorrectly reported. Fix it.
- writing the output data rate was also wrong due to reverse parameters.
* bmp280
- error message for wrong chip ID gave the wrong expected value.
* hdc100x
- mask for writing the integration time was wrong allowin g us to get
'stuck' in a particular value with no way back.
- temperature reported in celsius rather than millicelsius as per the
ABI.
- Get rid of some incorrect data shifting which lead to readings being
rather incorrect.
* max44000
- drop scale attribute for proximity as it is an unscaled value (depends
on what is in range rather than anything knowable at the detector).
* st-pressure
- ABI compliance fixes - units were wrong.
* st-sensors
- We introduced some nasty issues with the recent switch over to a
a somewhat threaded handler in that we broke using a software trigger
with these devices. Now do it properly. It's a larger patch than ideal
for a fix, but the logic is straight forward.
- Make sure the trigger is initialized before requesting the interrupt.
This matters now the interrupt can be shared. Before it was ugly and wrong
but short of flakey hardware could not be triggered.
- Hammer down the dataready pin at boot - otherwise with really
unlucky timing things could get interestingly wedged requiring a hard power
down of the chip.
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Merge tag 'iio-fixes-for-4.7a' of git://git.kernel.org/pub/scm/linux/kernel/git/jic23/iio into staging-linus
Jonathan writes:
First round of iio fixes for the 4.7 cycle.
A slightly bumper set due to travel delaying the pull request and a fair few
issues with the recent merge window patches. Patches all over the place.
The st-sensors one is probably the most involved, but definitly solves the
issues seen. Note there are some other issues around that handler
(and the fact that a lot of boards tie a level interrupt chip to an
edge interrupt only irq chip). These are not regressions however, so
will turn up the slow route.
* core
- iio_trigger_attach_pollfunc had some really badly wrong error handling.
Another nasty triggered whilst chasing down issues with the st sensors
rework below.
* ad5592r
- fix an off by one error when allocating channels.
* am2315
- a stray mutex unlock before we ever take the lock.
* apds9960
- missing a parent in the driver model (which should be the i2c device).
Result is it doesn't turn up under /sys/bus/i2c/devices which some
userspace code uses for repeatable device identification.
* as3935
- ABI usage bug which meant a processed value was reported as raw. Now
reporting scale as well to ensure userspace has the info it needs.
- Don't return processed value via the buffer - it doesn't conform to
the ABI and will overflow in some cases.
- Fix a wrongly sized buffer which would overflow trashing part of the
stack. Also move it onto the heap as part of the fix.
* bh1780
- a missing return after write in debugfs lead to an incorrect read and
a null pointer dereference.
- dereferencing the wrong pointer in suspend and resume leading to
unpredictable results.
- assign a static name to avoid accidentally ending up with no name if
loaded via device tree.
* bmi160
- output data rate for the accelerometer was incorrectly reported. Fix it.
- writing the output data rate was also wrong due to reverse parameters.
* bmp280
- error message for wrong chip ID gave the wrong expected value.
* hdc100x
- mask for writing the integration time was wrong allowin g us to get
'stuck' in a particular value with no way back.
- temperature reported in celsius rather than millicelsius as per the
ABI.
- Get rid of some incorrect data shifting which lead to readings being
rather incorrect.
* max44000
- drop scale attribute for proximity as it is an unscaled value (depends
on what is in range rather than anything knowable at the detector).
* st-pressure
- ABI compliance fixes - units were wrong.
* st-sensors
- We introduced some nasty issues with the recent switch over to a
a somewhat threaded handler in that we broke using a software trigger
with these devices. Now do it properly. It's a larger patch than ideal
for a fix, but the logic is straight forward.
- Make sure the trigger is initialized before requesting the interrupt.
This matters now the interrupt can be shared. Before it was ugly and wrong
but short of flakey hardware could not be triggered.
- Hammer down the dataready pin at boot - otherwise with really
unlucky timing things could get interestingly wedged requiring a hard power
down of the chip.
commit 98ad8b41f58dff6b30713d7f09ae3834b8df7ded
("iio: st_sensors: verify interrupt event to status") caused
a regression when reading ST sensors from a HRTimer trigger
rather than the intrinsic interrupts: the HRTimer may
trigger faster than the sensor provides new values, and
as the check against new values available as a cause of
the interrupt trigger was done in the poll function,
this would bail out of the HRTimer interrupt with
IRQ_NONE.
So clearly we need to only check the new values available
from the proper interrupt handler and not from the poll
function, which should rather just read the raw values
from the registers, put them into the buffer and be happy.
To achieve this: switch the ST Sensors over to using a true
threaded interrupt handler.
In the interrupt thread, check if new values are available,
else yield to the (potential) next device on the same
interrupt line to check the registers. If the interrupt
was ours, proceed to poll the values.
Instead of relying on iio_trigger_generic_data_rdy_poll() as
a top half to wake up the thread that polls the sensor for
new data, have the thread call iio_trigger_poll_chained()
after determining that is is the proper source of the
interrupt. This is modelled on drivers/iio/accel/mma8452.c
which is already using a properly threaded interrupt handler.
In order to get the same precision in timestamps as
previously, where samples would be timestamped in the
poll function pf->timestamp when calling
iio_trigger_generic_data_rdy_poll() we introduce a
local timestamp in the sensor data, set it in the top half
(fastpath) of the interrupt handler and provide that to the
core when calling iio_push_to_buffers_with_timestamp().
Additionally: if the active scanmask is not set for the
sensor no IRQs should be enabled and we need to bail out
with IRQ_NONE. This can happen if spurious IRQs fire when
installing the threaded interrupt handler.
Tested with hard interrupt triggers on LIS331DL, then also
tested with hrtimers on the same sensor by creating a 75Hz
HRTimer and using it to poll the sensor.
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
Cc: Giuseppe Barba <giuseppe.barba@st.com>
Cc: Denis Ciocca <denis.ciocca@st.com>
Reported-by: Crestez Dan Leonard <cdleonard@gmail.com>
Tested-by: Crestez Dan Leonard <cdleonard@gmail.com>
Tested-by: Jonathan Cameron <jic23@kernel.org>
Fixes: 97865fe413 ("iio: st_sensors: verify interrupt event to status")
Signed-off-by: Jonathan Cameron <jic23@kernel.org>
bmc150 driver supports also BMC156 and BMM150 chips.
Signed-off-by: Daniel Baluta <daniel.baluta@intel.com>
Signed-off-by: Jonathan Cameron <jic23@kernel.org>
Ensure failure to enable power regulators is properly handled.
Signed-off-by: Gregor Boirie <gregor.boirie@parrot.com>
Signed-off-by: Jonathan Cameron <jic23@kernel.org>
BMM150 is register compatible with magnetometer part of
BMC156.
Datasheet is at:
http://www.mouser.com/ds/2/783/BST-BMM150-DS001-01-786480.pdf
Signed-off-by: Daniel Baluta <daniel.baluta@intel.com>
Signed-off-by: Jonathan Cameron <jic23@kernel.org>
The device has simple 8-bit registers but the driver incorrectly uses
block or word reads without checking functionality bits.
Fix by using i2c_smbus_read_i2c_block_data_or_emulated instead of
i2c_smbus_read_i2c_block_data or i2c_smbus_read_word_data. This will
check functionality bits and use the fastest available transfer method.
Signed-off-by: Crestez Dan Leonard <leonard.crestez@intel.com>
Signed-off-by: Jonathan Cameron <jic23@kernel.org>
Bit of a bumper set for new drivers but plenty of other stuff here as well!
New device support
* ad5592R ADC/DAC
- new driver supporting ad5592r and ad5593r combined ADC/DAC and gpio chips.
* Aosong am2315 relative humidity
- new driver with triggered buffer support in follow up patch.
* bmi160 imu
- new driver
* bmp280
- bmp180 support - note there is support in the misc/bmp085 driver. Intent
is to remove that driver long term.
* invensense mpu6050
- cleanup leading to explicit support of mpu9150 with a good few cleanups
along the way.
* Hope RF hp03 pressure and temperature sensor.
- new driver
* maxim DS1803 potentiometer
- new driver
* maxim max44000 light and proximity sensor
- new driver built in a series of steps to support pretty much everything.
* ROHM BH1780 light sensor
- new driver. There is an existing driver in misc that this is pretty much
intended to replace. The discussion on whether to support the non standard
interface of that driver is some way is continuing.
* st-gyro
- lsm9ds0-gyro. The accel/magn side of this will take a while longer as
extensions to the st library are needed for cases where two types of sensor
share a single i2c address.
* ti-adc081c
- support the adc101c and adc121c
* Vishay VEML6070 UV sensor
- new driver.
New features
* core
- devm_ APIs for channel_get and channel_get_all. The first user of these
is the generic ADC based thermal driver. As it is going through the
thermal tree these will be picked up as a patch to that next cycle as that
is how the author preferred to do it.
- mounting matrix support. This new core support allows devices to provide
to userspace (typically from the device tree) allowing compensation for how
the sensor is mounted on the device. First examples are on UAVs but it
has a more mundane use on typical phone where the chip may be on the front
or the back of the circuit board and soldered at any angle. Includes
support for this ABI in ak8975 (which has an older interface, now
deprecated) and mpu6050.
* tools
- add a -a option to enable all available channels in generic_buffer sample.
Makes it somewhat easier to use.
* adis library and drivers
- support manual self test flag clearing. This has technically been broken
for a very long time - result is an offset on readings as the applied field
is on all the time.
* ak8975
- triggered buffer support
* bmc150
- spi support (including splitting the driver into core and i2c parts)
* bmp280
- oversampling support.
* dht11
- improved logging - useful to debug timing issues on this quirky device.
* st-sensors
- read each channel invidivually as not all support the optimization of
reading in bulk. This is technically a fix, but will need to be backported
if desired.
- support open drain and shared interrupts.
* ti-adc081c
- triggered buffer support.
Cleanups
* inkern
- white space fix.
* ad7606
- use the iio_device_claim_direct_mode call rather than open coding equiv.
* ad799x
- white space fix.
* ad9523
- unsigned -> unsigned int
* apds9660
- brace location tidying up.
- silence an uninitialized variable warning.
* ak8975
- else and brace on same line fix.
* at91_adc
- white space fixes.
* bmc150
- use regmap stored copy of the device pointer rather than having an
additional copy.
* bmg160
- use regmap stored copy of the device pointer rather than having an
additional copy.
* hid-sensors
- white space fixes.
* mcp3422
- white space fix.
* mma7455
- use regmap to retrieve the device struct rather than carrying another copy
in the private data.
* ms_sensors
- white space fix.
* mxs-lradc
- move current bindings out of staging - some will be shortly deprecated but
the reality is that we have device trees out there using them so they will
need to be supported for some time. They accidentally got left behind
when the driver graduated from staging.
- white space cleanup.
- set INPUT_PROP_DIRECT.
- move ts config into a better function.
- move the STMP reset out of the ADC init.
* vf610_adc
- case label indenting fix.
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Merge tag 'iio-for-4.7b' of git://git.kernel.org/pub/scm/linux/kernel/git/jic23/iio into staging-testing
Jonathan writes:
2nd set of new device support, features and cleanup for IIO in the 4.7 cycle.
Bit of a bumper set for new drivers but plenty of other stuff here as well!
New device support
* ad5592R ADC/DAC
- new driver supporting ad5592r and ad5593r combined ADC/DAC and gpio chips.
* Aosong am2315 relative humidity
- new driver with triggered buffer support in follow up patch.
* bmi160 imu
- new driver
* bmp280
- bmp180 support - note there is support in the misc/bmp085 driver. Intent
is to remove that driver long term.
* invensense mpu6050
- cleanup leading to explicit support of mpu9150 with a good few cleanups
along the way.
* Hope RF hp03 pressure and temperature sensor.
- new driver
* maxim DS1803 potentiometer
- new driver
* maxim max44000 light and proximity sensor
- new driver built in a series of steps to support pretty much everything.
* ROHM BH1780 light sensor
- new driver. There is an existing driver in misc that this is pretty much
intended to replace. The discussion on whether to support the non standard
interface of that driver is some way is continuing.
* st-gyro
- lsm9ds0-gyro. The accel/magn side of this will take a while longer as
extensions to the st library are needed for cases where two types of sensor
share a single i2c address.
* ti-adc081c
- support the adc101c and adc121c
* Vishay VEML6070 UV sensor
- new driver.
New features
* core
- devm_ APIs for channel_get and channel_get_all. The first user of these
is the generic ADC based thermal driver. As it is going through the
thermal tree these will be picked up as a patch to that next cycle as that
is how the author preferred to do it.
- mounting matrix support. This new core support allows devices to provide
to userspace (typically from the device tree) allowing compensation for how
the sensor is mounted on the device. First examples are on UAVs but it
has a more mundane use on typical phone where the chip may be on the front
or the back of the circuit board and soldered at any angle. Includes
support for this ABI in ak8975 (which has an older interface, now
deprecated) and mpu6050.
* tools
- add a -a option to enable all available channels in generic_buffer sample.
Makes it somewhat easier to use.
* adis library and drivers
- support manual self test flag clearing. This has technically been broken
for a very long time - result is an offset on readings as the applied field
is on all the time.
* ak8975
- triggered buffer support
* bmc150
- spi support (including splitting the driver into core and i2c parts)
* bmp280
- oversampling support.
* dht11
- improved logging - useful to debug timing issues on this quirky device.
* st-sensors
- read each channel invidivually as not all support the optimization of
reading in bulk. This is technically a fix, but will need to be backported
if desired.
- support open drain and shared interrupts.
* ti-adc081c
- triggered buffer support.
Cleanups
* inkern
- white space fix.
* ad7606
- use the iio_device_claim_direct_mode call rather than open coding equiv.
* ad799x
- white space fix.
* ad9523
- unsigned -> unsigned int
* apds9660
- brace location tidying up.
- silence an uninitialized variable warning.
* ak8975
- else and brace on same line fix.
* at91_adc
- white space fixes.
* bmc150
- use regmap stored copy of the device pointer rather than having an
additional copy.
* bmg160
- use regmap stored copy of the device pointer rather than having an
additional copy.
* hid-sensors
- white space fixes.
* mcp3422
- white space fix.
* mma7455
- use regmap to retrieve the device struct rather than carrying another copy
in the private data.
* ms_sensors
- white space fix.
* mxs-lradc
- move current bindings out of staging - some will be shortly deprecated but
the reality is that we have device trees out there using them so they will
need to be supported for some time. They accidentally got left behind
when the driver graduated from staging.
- white space cleanup.
- set INPUT_PROP_DIRECT.
- move ts config into a better function.
- move the STMP reset out of the ADC init.
* vf610_adc
- case label indenting fix.
Expose a rotation matrix to indicate userspace the chip orientation with
respect to the overall hardware system.
Matrix is retrieved from "in_mount_matrix". It is declared into ak8975 DTS
entry as a "mount-matrix" property.
Signed-off-by: Gregor Boirie <gregor.boirie@parrot.com>
Acked-by: Rob Herring <robh@kernel.org>
Signed-off-by: Jonathan Cameron <jic23@kernel.org>
This makes all ST sensor drivers check that they actually have
new data available for the requested channel(s) before claiming
an IRQ, by reading the status register (which is conveniently
the same for all ST sensors) and check that the channel has new
data before proceeding to read it and fill the buffer.
This way sensors can share an interrupt line: it can be flaged
as shared and then the sensor that did not fire will return
NO_IRQ, and the sensor that fired will handle the IRQ and
return IRQ_HANDLED.
Cc: Giuseppe Barba <giuseppe.barba@st.com>
Cc: Denis Ciocca <denis.ciocca@st.com>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
Signed-off-by: Jonathan Cameron <jic23@kernel.org>
This is useful for easily adding SPI support in later patches.
Now bmc150_magn exports core functions to be used by I2C/SPI drivers
instances. For the moment only I2C driver is supported.
Signed-off-by: Daniel Baluta <daniel.baluta@intel.com>
Acked-by: Irina Tirdea <irina.tirdea@intel.com>
Signed-off-by: Jonathan Cameron <jic23@kernel.org>
If i2c_device_id *id is NULL and acpi_match_device returns NULL too,
then chipset may be unitialized when accessing &ak_def_array[chipset] in
ak8975_probe. Therefore initialize chipset to AK_MAX_TYPE, which will
return an error when not changed.
This patch fixes the following maybe-uninitialized warning:
drivers/iio/magnetometer/ak8975.c: In function ‘ak8975_probe’:
drivers/iio/magnetometer/ak8975.c:788:14: warning: ‘chipset’ may be used
uninitialized in this function [-Wmaybe-uninitialized]
data->def = &ak_def_array[chipset];
Signed-off-by: Richard Leitner <dev@g0hl1n.net>
Cc: <Stable@vger.kernel.org>
Signed-off-by: Jonathan Cameron <jic23@kernel.org>
In certain probe conditions the interrupt came right after registering
the handler causing a NULL pointer exception because of uninitialized
waitqueue:
$ udevadm trigger
i2c-gpio i2c-gpio-1: using pins 143 (SDA) and 144 (SCL)
i2c-gpio i2c-gpio-3: using pins 53 (SDA) and 52 (SCL)
Unable to handle kernel NULL pointer dereference at virtual address 00000000
pgd = e8b38000
[00000000] *pgd=00000000
Internal error: Oops: 5 [#1] SMP ARM
Modules linked in: snd_soc_i2s(+) i2c_gpio(+) snd_soc_idma snd_soc_s3c_dma snd_soc_core snd_pcm_dmaengine snd_pcm snd_timer snd soundcore ac97_bus spi_s3c64xx pwm_samsung dwc2 exynos_adc phy_exynos_usb2 exynosdrm exynos_rng rng_core rtc_s3c
CPU: 0 PID: 717 Comm: data-provider-m Not tainted 4.6.0-rc1-next-20160401-00011-g1b8d87473b9e-dirty #101
Hardware name: SAMSUNG EXYNOS (Flattened Device Tree)
(...)
(__wake_up_common) from [<c0379624>] (__wake_up+0x38/0x4c)
(__wake_up) from [<c0a41d30>] (ak8975_irq_handler+0x28/0x30)
(ak8975_irq_handler) from [<c0386720>] (handle_irq_event_percpu+0x88/0x140)
(handle_irq_event_percpu) from [<c038681c>] (handle_irq_event+0x44/0x68)
(handle_irq_event) from [<c0389c40>] (handle_edge_irq+0xf0/0x19c)
(handle_edge_irq) from [<c0385e04>] (generic_handle_irq+0x24/0x34)
(generic_handle_irq) from [<c05ee360>] (exynos_eint_gpio_irq+0x50/0x68)
(exynos_eint_gpio_irq) from [<c0386720>] (handle_irq_event_percpu+0x88/0x140)
(handle_irq_event_percpu) from [<c038681c>] (handle_irq_event+0x44/0x68)
(handle_irq_event) from [<c0389a70>] (handle_fasteoi_irq+0xb4/0x194)
(handle_fasteoi_irq) from [<c0385e04>] (generic_handle_irq+0x24/0x34)
(generic_handle_irq) from [<c03860b4>] (__handle_domain_irq+0x5c/0xb4)
(__handle_domain_irq) from [<c0301774>] (gic_handle_irq+0x54/0x94)
(gic_handle_irq) from [<c030c910>] (__irq_usr+0x50/0x80)
The bug was reproduced on exynos4412-trats2 (with a max77693 device also
using i2c-gpio) after building max77693 as a module.
Cc: <stable@vger.kernel.org>
Fixes: 94a6d5cf7c ("iio:ak8975 Implement data ready interrupt handling")
Signed-off-by: Krzysztof Kozlowski <k.kozlowski@samsung.com>
Tested-by: Gregor Boirie <gregor.boirie@parrot.com>
Signed-off-by: Jonathan Cameron <jic23@kernel.org>
This fixes the error reported by checkpatch.pl:
ERROR: else should follow close brace '}'
Signed-off-by: Slawomir Stepien <sst@poczta.fm>
Signed-off-by: Jonathan Cameron <jic23@kernel.org>
This resolves a lot of merge issues with PAGE_CACHE_* changes, and an
iio driver merge issue.
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
This will be used together with an external trigger (e.g hrtimer based
software trigger).
Signed-off-by: Gregor Boirie <gregor.boirie@parrot.com>
Signed-off-by: Jonathan Cameron <jic23@kernel.org>
When CONFIG_IIO_TRIGGER is enabled but CONFIG_IIO_BUFFER is
not, we get a build error in the st_magn driver:
drivers/iio/magnetometer/st_magn_core.c:573:23: error: 'ST_MAGN_TRIGGER_SET_STATE' undeclared here (not in a function)
.set_trigger_state = ST_MAGN_TRIGGER_SET_STATE,
^~~~~~~~~~~~~~~~~~~~~~~~~
Apparently, this ST_MAGN_TRIGGER_SET_STATE macro was meant to
be set to NULL when the definition is not available because
st_magn_buffer.c is not compiled, but the alternative definition
was not included in the original patch. This adds it.
Signed-off-by: Arnd Bergmann <arnd@arndb.de>
Fixes: 74f5683f35 ("iio: st_magn: Add irq trigger handling")
Acked-by: Denis Ciocca <denis.ciocca@st.com>
Cc: <Stable@vger.kernel.org>
Signed-off-by: Jonathan Cameron <jic23@kernel.org>
GPIO handling code has been removed from the drivers (since
this is now handled by the ACPI core) in commit 0f0796509c ("iio:
remove gpio interrupt probing from drivers that use a single interrupt").
Remove the include for linux/gpio/consumer.h since it is no longer
used.
Signed-off-by: Irina Tirdea <irina.tirdea@intel.com>
Signed-off-by: Jonathan Cameron <jic23@kernel.org>
Ensure optional regulator is properly disabled when present.
Fixes: 63d5d525cb ("iio:magnetometer:ak8975: power regulator support")
Signed-off-by: Gregor Boirie <gregor.boirie@parrot.com>
Signed-off-by: Jonathan Cameron <jic23@kernel.org>
Add support for an optional regulator which, if found into device-tree,
will power on device at probing time.
The regulator is declared into ak8975 DTS entry as a "vdd-supply" property.
Signed-off-by: Gregor Boirie <gregor.boirie@parrot.com>
Signed-off-by: Jonathan Cameron <jic23@kernel.org>
ak_def_array bounds are not properly checked in case of ACPI matching
failure. GCC warns with the following message at line 799:
‘chipset’ may be used uninitialized in this function.
Signed-off-by: Gregor Boirie <gregor.boirie@parrot.com>
Signed-off-by: Jonathan Cameron <jic23@kernel.org>
This patch moves hmc5843 driver from staging/iio/magnetometer
to iio/magnetometer, updates the corresponding Makefiles and
moves the hmc5843* entries to the 'Industrial I/O support ->
Magnetometer sensors' menu.
Signed-off-by: Cristina Moraru <cristina.moraru09@gmail.com>
Cc: Daniel Baluta <daniel.baluta@intel.com>
Signed-off-by: Jonathan Cameron <jic23@kernel.org>
The ak_def structures are never modified, so declare them as const.
Done with the help of Coccinelle.
Signed-off-by: Julia Lawall <Julia.Lawall@lip6.fr>
Signed-off-by: Jonathan Cameron <jic23@kernel.org>
Most ST MEMS Sensors that support interrupts can also handle sending
an active low interrupt, i.e. going from high to low on data ready
(or other interrupt) and thus triggering on a falling edge to the
interrupt controller.
Set up logic to inspect the interrupt line we get for a sensor: if
it is triggering on rising edge, leave everything alone, but if it
triggers on falling edges, set up active low, and if unsupported
configurations appear: warn with errors and reconfigure the interrupt
to a rising edge, which all interrupt generating sensors support.
Create a local header for st_sensors_core.h to share functions
between the sensor core and the trigger setup code.
Cc: Giuseppe Barba <giuseppe.barba@st.com>
Cc: Denis Ciocca <denis.ciocca@st.com>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
Signed-off-by: Jonathan Cameron <jic23@kernel.org>
Usual mixed bag, but the big item perhaps in this series is the DMA buffer
support added by Lars-Peter Clausen. It's been in the works for a long time
and it will be interesting to see what hardware support shows up now that
this is available.
New core features + associate cleanup.
* Add generic DMA buffer infrastructure
* Add a DMAengine framework based buffer
Also associated minor changes.
- Set the device buffer watermark based on the minimum watermark for all
attached buffers rather than just the 'primary' one.
- iio_buffer_init - only set the watermark default if one hasn't already
been provided. This allows simple support for devices with a fixed
watermark.
- read only attribute for watermark on fixed watermark devices.
- add explicit buffer enable/disable callbacks to allow the buffer to
do more than trivial actions when it is being turned on and off.
* IIO_VAL_INT support in write_raw_get_fmt function.
New device support
* Freescale MMA7455/7456L accelerometers
* Memsic MXC6255XC accelerometer
* ST lis2dh12 accelerometer
* TI ADS8688 ADC
* TI Palamas (twl6035/7) gpadc
New driver features
* mma8452
- support either of the available interrupt pins to cope with the case
where board layout has lead to a particular one being connected.
Staging graduation
* Dummy driver
- this driver acts as both an example and a test device for those with
out hardware to develop userspace code against.
Cleanups and minor bits and bobs.
* treewide
- Sort out the ordering of iio_device_register/unregister vs runtime
pm function calls so that it's all nice and consistent and not race
prone.
- Check sscanf return values. None of the cases will actually happen as
the strings are supplied internally, but best to be consistent on this.
* ad7780
- switch over to the gpio descriptor interface and remove the now unused
platform data which gets rid of a header entirely.
* ad7793
- drop a pointless else statement.
* at91_adc
- Swap kmalloc_array in for a kmalloc doing the same job.
* dummy
- get rid of some commented out lines that snuck in during the move of
the driver.
* lm3533-als
- Print an error message on provision of an invalid resistance.
* mcp320x
- Add compatible strings with vendor prefix and deprecate those with
no vendor prefix.
* mxs-lradc
- Use BIT macro in various places rather than shifted ones.
* pa12203001
- Power off the chip if the registration fails.
* pulsedlight-lidar-lite
- add runtime PM support.
* xilinx XADC
- constify an iio_buffer_setup_ops structure.
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Merge tag 'iio-for-4.5a' of git://git.kernel.org/pub/scm/linux/kernel/git/jic23/iio into staging-next
Jonathan writes:
First set of new device support, features and cleanups for IIO in the 4.5 cycle
Usual mixed bag, but the big item perhaps in this series is the DMA buffer
support added by Lars-Peter Clausen. It's been in the works for a long time
and it will be interesting to see what hardware support shows up now that
this is available.
New core features + associate cleanup.
* Add generic DMA buffer infrastructure
* Add a DMAengine framework based buffer
Also associated minor changes.
- Set the device buffer watermark based on the minimum watermark for all
attached buffers rather than just the 'primary' one.
- iio_buffer_init - only set the watermark default if one hasn't already
been provided. This allows simple support for devices with a fixed
watermark.
- read only attribute for watermark on fixed watermark devices.
- add explicit buffer enable/disable callbacks to allow the buffer to
do more than trivial actions when it is being turned on and off.
* IIO_VAL_INT support in write_raw_get_fmt function.
New device support
* Freescale MMA7455/7456L accelerometers
* Memsic MXC6255XC accelerometer
* ST lis2dh12 accelerometer
* TI ADS8688 ADC
* TI Palamas (twl6035/7) gpadc
New driver features
* mma8452
- support either of the available interrupt pins to cope with the case
where board layout has lead to a particular one being connected.
Staging graduation
* Dummy driver
- this driver acts as both an example and a test device for those with
out hardware to develop userspace code against.
Cleanups and minor bits and bobs.
* treewide
- Sort out the ordering of iio_device_register/unregister vs runtime
pm function calls so that it's all nice and consistent and not race
prone.
- Check sscanf return values. None of the cases will actually happen as
the strings are supplied internally, but best to be consistent on this.
* ad7780
- switch over to the gpio descriptor interface and remove the now unused
platform data which gets rid of a header entirely.
* ad7793
- drop a pointless else statement.
* at91_adc
- Swap kmalloc_array in for a kmalloc doing the same job.
* dummy
- get rid of some commented out lines that snuck in during the move of
the driver.
* lm3533-als
- Print an error message on provision of an invalid resistance.
* mcp320x
- Add compatible strings with vendor prefix and deprecate those with
no vendor prefix.
* mxs-lradc
- Use BIT macro in various places rather than shifted ones.
* pa12203001
- Power off the chip if the registration fails.
* pulsedlight-lidar-lite
- add runtime PM support.
* xilinx XADC
- constify an iio_buffer_setup_ops structure.
At probe, runtime pm should be setup before registering the sysfs interface so
that all the power attributes are accurate and functional when registering.
Also, when removing the device we should unregister first to make sure
that the interfaces that may result in wakeups are no longer available.
Fix this behaviour for the following drivers: bmc150, bmg160, kmx61,
kxcj-1013, mma9551, mma9553, rpr0521.
Signed-off-by: Adriana Reus <adriana.reus@intel.com>
Signed-off-by: Jonathan Cameron <jic23@kernel.org>
Quite a lot of activity in SPI this cycle, almost all of it in drivers
with a few minor improvements and tweaks in the core.
- Updates to pxa2xx to support Intel Broxton and multiple chip selects.
- Support for big endian in the bcm63xx driver.
- Multiple slave support for the mt8173
- New driver for the auxiliary SPI controller in bcm2835 SoCs.
- Support for Layerscale SoCs in the Freescale DSPI driver.
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Merge tag 'spi-v4.4' of git://git.kernel.org/pub/scm/linux/kernel/git/broonie/spi
Pull spi updates from Mark Brown:
"Quite a lot of activity in SPI this cycle, almost all of it in drivers
with a few minor improvements and tweaks in the core.
- Updates to pxa2xx to support Intel Broxton and multiple chip selects.
- Support for big endian in the bcm63xx driver.
- Multiple slave support for the mt8173
- New driver for the auxiliary SPI controller in bcm2835 SoCs.
- Support for Layerscale SoCs in the Freescale DSPI driver"
* tag 'spi-v4.4' of git://git.kernel.org/pub/scm/linux/kernel/git/broonie/spi: (87 commits)
spi: pxa2xx: Rework self-initiated platform data creation for non-ACPI
spi: pxa2xx: Add support for Intel Broxton
spi: pxa2xx: Detect number of enabled Intel LPSS SPI chip select signals
spi: pxa2xx: Add output control for multiple Intel LPSS chip selects
spi: pxa2xx: Use LPSS prefix for defines that are Intel LPSS specific
spi: Add DSPI support for layerscape family
spi: ti-qspi: improve ->remove() callback
spi/spi-xilinx: Fix race condition on last word read
spi: Drop owner assignment from spi_drivers
spi: Add THIS_MODULE to spi_driver in SPI core
spi: Setup the master controller driver before setting the chipselect
spi: dw: replace magic constant by DW_SPI_DR
spi: mediatek: mt8173 spi multiple devices support
spi: mediatek: handle controller_data in mtk_spi_setup
spi: mediatek: remove mtk_spi_config
spi: mediatek: Update document devicetree bindings to support multiple devices
spi: fix kernel-doc warnings about missing return desc in spi.c
spi: fix kernel-doc warnings about missing return desc in spi.h
spi: pxa2xx: Align a few defines
spi: pxa2xx: Save other reg_cs_ctrl bits when configuring chip select
...
An spi_driver does not need to set an owner, it will be populated by the
driver core.
Signed-off-by: Andrew F. Davis <afd@ti.com>
Acked-by: Jonathan Cameron <jic23@kernel.org>
Signed-off-by: Mark Brown <broonie@kernel.org>
Commit 845c877009 ("i2c / ACPI: Assign IRQ for devices that have
GpioInt automatically") automatically assigns the first ACPI GPIO
interrupt in client->irq, so we can remove the probing code from
drivers that use only one interrupt.
Signed-off-by: Octavian Purdila <octavian.purdila@intel.com>
Signed-off-by: Jonathan Cameron <jic23@kernel.org>
New device support
* APDS9960 ALS + proximity driver
* bmg160 SPI devices.
* HDC100x humidity sensors
* Holt HI-8435 threshold detector
* mma8453Q accelerometer added to the mma8452 driver
* mma86452FC and mma8653FC accelerometers added to the mma8452 driver
* mxc4005 accelerometer
* PulsedLight LIDAR
* SensorTech VZ89x volatile organic compound sensor
* UPISEMI uS5182d ALS and proximity sensors
New core functionality
* triggered events - use triggers to check for changes in threshold type
detectors on devices with out interrupt support. First user is the holt
comparator.
* chemical concentration and resistance channel types.
New driver functionality
* vf610
- buffer support.
- followup coccinelle warning fix.
Core rework
* buffers
- break out callback buffer to own module.
- move buffer implementations to a new subdirectory
* percolate the error code form iio_event_getfd out to userspace
rather than giving a missleading error later on.
Cleanups
* adddac drivers
- use BIT macro where appropriate.
* meter drivers
- use BIT macro where appropriate.
* ad7303
- add an OF match table to line up with the binding docs.
* adc128s052
- add an OF match table to line up with the binding docs.
* adf4350
- add an OF match table to line up with the binding docs
* as3935
- add an OF match table to line up with the binding docs.
* berlin2-adc
- use GENMASK and BIT for masks
- prevent attempting to sample multiple channels at once by moving a
mutex scop
- coding style cleanups
* bmg150_magn
- kconfig sort order was wrong - fix it.
* bmg160
- use i2c regmap and drop all uses of i2c_client
- separate i2c and core driver
* cc10001_adc
- kconfig sort order was wrong - fix it.
* evgen (dummy driver helper module)
- move interrupt generation to irq_work to reduce differences between
the dummy driver and real hardware drivers.
* hmc5843
- set the name dynamically rather than to a fixed value for one of the
suported parts.
- export module alias information to allow autoprobing of module.
* lpc32xx
- on failure to get resource or irq return -ENXIO as uppose to -EBUSY
* max1027
- set .of_match_table to actually allow OF style matching.
* max5821
- add MODULE_DEVICE_TABLE for OF table.
* mma8452
- refactor to separate out chip specific data.
- add freefall / motion interrupt source for devices that do their
interrupts slightly differently.
- update copywrite notice.
- leave naming of events directory in sysfs to the core
* mcp320x
- set .of_match_table so that it can be use for OF style matching.
* mlx90614
- Implement filter configuration (note the datasheet changed as a result
of the driver reviews to include the values we needed ;)
* opt3001
- drop .owner field as assigned by platform driver core.
* si7020
- replace a bitmask on the humidity values with a more correct range
check.
* stk310
- improved error handling.
- use BIT macro where appropriate and use the resulting defines
instead of magic numbers in the code.
- fix indentation
* st-sensors
- add debugfs register read hook
* tsl4531
- fix error handling in check_id
* twl6030
- fix module autoload for OF
* iio-trig-sysfs
- document add and remove attribute
* trigger in staging
- code alignment fixes.
- braces on both branches of if statement if needed for one.
* xilinx-xadc
- push interrupts into hardirq context as there isn't much in them
any more and it avoids breaking PREEMPT_RT builds due to the use
of a spinlock between the hardirq and the thread.
Tools
* event-monitor
- report unsupported events. We keep expanding what can come from drivers
so give a helpful error if one turns up in an out of date userspace
program.
* generic-buffer
- helpful message about needing to enable a channel to start the buffer.
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Merge tag 'iio-for-4.4a' of git://git.kernel.org/pub/scm/linux/kernel/git/jic23/iio into staging-next
Jonathan writes:
First round of new driver, new functionality and cleanups for IIO in the 4.4 cycle
New device support
* APDS9960 ALS + proximity driver
* bmg160 SPI devices.
* HDC100x humidity sensors
* Holt HI-8435 threshold detector
* mma8453Q accelerometer added to the mma8452 driver
* mma86452FC and mma8653FC accelerometers added to the mma8452 driver
* mxc4005 accelerometer
* PulsedLight LIDAR
* SensorTech VZ89x volatile organic compound sensor
* UPISEMI uS5182d ALS and proximity sensors
New core functionality
* triggered events - use triggers to check for changes in threshold type
detectors on devices with out interrupt support. First user is the holt
comparator.
* chemical concentration and resistance channel types.
New driver functionality
* vf610
- buffer support.
- followup coccinelle warning fix.
Core rework
* buffers
- break out callback buffer to own module.
- move buffer implementations to a new subdirectory
* percolate the error code form iio_event_getfd out to userspace
rather than giving a missleading error later on.
Cleanups
* adddac drivers
- use BIT macro where appropriate.
* meter drivers
- use BIT macro where appropriate.
* ad7303
- add an OF match table to line up with the binding docs.
* adc128s052
- add an OF match table to line up with the binding docs.
* adf4350
- add an OF match table to line up with the binding docs
* as3935
- add an OF match table to line up with the binding docs.
* berlin2-adc
- use GENMASK and BIT for masks
- prevent attempting to sample multiple channels at once by moving a
mutex scop
- coding style cleanups
* bmg150_magn
- kconfig sort order was wrong - fix it.
* bmg160
- use i2c regmap and drop all uses of i2c_client
- separate i2c and core driver
* cc10001_adc
- kconfig sort order was wrong - fix it.
* evgen (dummy driver helper module)
- move interrupt generation to irq_work to reduce differences between
the dummy driver and real hardware drivers.
* hmc5843
- set the name dynamically rather than to a fixed value for one of the
suported parts.
- export module alias information to allow autoprobing of module.
* lpc32xx
- on failure to get resource or irq return -ENXIO as uppose to -EBUSY
* max1027
- set .of_match_table to actually allow OF style matching.
* max5821
- add MODULE_DEVICE_TABLE for OF table.
* mma8452
- refactor to separate out chip specific data.
- add freefall / motion interrupt source for devices that do their
interrupts slightly differently.
- update copywrite notice.
- leave naming of events directory in sysfs to the core
* mcp320x
- set .of_match_table so that it can be use for OF style matching.
* mlx90614
- Implement filter configuration (note the datasheet changed as a result
of the driver reviews to include the values we needed ;)
* opt3001
- drop .owner field as assigned by platform driver core.
* si7020
- replace a bitmask on the humidity values with a more correct range
check.
* stk310
- improved error handling.
- use BIT macro where appropriate and use the resulting defines
instead of magic numbers in the code.
- fix indentation
* st-sensors
- add debugfs register read hook
* tsl4531
- fix error handling in check_id
* twl6030
- fix module autoload for OF
* iio-trig-sysfs
- document add and remove attribute
* trigger in staging
- code alignment fixes.
- braces on both branches of if statement if needed for one.
* xilinx-xadc
- push interrupts into hardirq context as there isn't much in them
any more and it avoids breaking PREEMPT_RT builds due to the use
of a spinlock between the hardirq and the thread.
Tools
* event-monitor
- report unsupported events. We keep expanding what can come from drivers
so give a helpful error if one turns up in an out of date userspace
program.
* generic-buffer
- helpful message about needing to enable a channel to start the buffer.
Core changes:
- Root out the wrapper devm_gpiod_get() and gpiod_get() etc
versions of the descriptor calls that did not use the flags
argument on the end. This was around for too long and eventually
Uwe Kleine-König took the time to clean it out and the last
users are removed along with the macros in this tag. In several
cases the use of flags simplifies the code. For this reason we
have (ACKed) patches hitting in DRM, IIO, media, NFC, USB+PHY
up until we hammer in the nail with removing the macros.
- Add a fat document describing how much ready-made GPIO stuff
we have i the kernel to discourage people from reinventing
a square wheel in userspace, as so often happens.
- Create a separate lockdep class for each instance of a GPIO
IRQ chip instead of using one class for all chips, as the current
code will not work with systems with several GPIO chips doing
lockdep debugging.
- Protect against driver unloading also when a GPIO line is only
used as IRQ for the GPIOLIB_IRQCHIP helpers.
- If the GPIO chip has no designated owner, assign the parent
device driver owner as owner.
- Consolidation of chained IRQ handler install/remove replacing
all call sites where irq_set_handler_data() and
irq_set_chained_handler() were done in succession with a
combined call to irq_set_chained_handler_and_data(). This
series was created by Thomas Gleixner after the problem was
observed by Russell King.
- Tglx also made another series of patches switching
__irq_set_handler_locked() for irq_set_handler_locked() which
is way cleaner.
- Tglx and Jiang Liu wrote a good bunch of patches to make use of
irq_desc_get_xxx() accessors and avoid looking up irq_descs
from IRQ numbers. The goal is to get rid of the irq number
from the handlers in the IRQ flow which is nice.
- Rob Herring killed off the set_irq_flags() for all GPIO
drivers. This was an ARM specific function that is replaced
with the generic irq_modify_status() where special flags
are actually needed.
- When an OF node has a pin range for its GPIOs, return
-EPROBE_DEFER if the pin controller isn't available.
Pretty logical, yet needed to be fixed.
- If a driver using GPIOLIB_IRQCHIP has its own
irq_*_resources call back, then call these instead of the
defaults provided by the GPIOLIB.
- Fix an undocumented ABI hole: named GPIOs were not
properly documented.
Driver improvements:
- Add get_direction() support to the generic GPIO driver, it's
strange that we didn't have that before.
- Make it possible to have input-only GPIO chips using the
generic GPIO driver.
- Clean out platform data support from the Emma Mobile (EM)
driver
- Finegrained runtime PM support for the RCAR driver.
- Support r8a7795 (R-car H3) in the RCAR driver.
- Support interrupts on GPIOs 16 thru 31 in the DaVinci driver.
- Some consolidation and new support in the MPC8xxx driver,
we now support MPC5125.
- Preempt-RT-friendly patches: the OMAP, MPC8xxx, drivers uses raw
spinlocks making it work better with the realime patches.
- Interrupt support for the EXTRAXFS GPIO driver.
- Make the ETRAXFS GPIO driver support also ARTPEC-3.
- Interrupt and wakeup support for the BRCMSTB driver, also for
wakeup from S5 cold boot.
- Mask MXC IRQs during suspend.
- Improve OMAP2 GPIO set_debounce() to work according to spec.
- The VF610 driver handles IRQs properly.
New drivers:
- ZTE ZX GPIO driver.
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Merge tag 'gpio-v4.3-1' of git://git.kernel.org/pub/scm/linux/kernel/git/linusw/linux-gpio
Pull GPIO updates from Linus Walleij:
"This is the bulk of GPIO changes for the v4.3 kernel cycle.
There is quite a lot going on in the GPIO subsystem this merge window,
so the main matter is decribed below.
The hits in other subsystems when making the GPIO flags optional are
all ACKed by their respective subsystem maintainers.
Core changes:
- Root out the wrapper devm_gpiod_get() and gpiod_get() etc versions
of the descriptor calls that did not use the flags argument on the
end. This was around for too long and eventually Uwe Kleine-König
took the time to clean it out and the last users are removed along
with the macros in this tag. In several cases the use of flags
simplifies the code. For this reason we have (ACKed) patches
hitting in DRM, IIO, media, NFC, USB+PHY up until we hammer in the
nail with removing the macros.
- Add a fat document describing how much ready-made GPIO stuff we
have i the kernel to discourage people from reinventing a square
wheel in userspace, as so often happens.
- Create a separate lockdep class for each instance of a GPIO IRQ
chip instead of using one class for all chips, as the current code
will not work with systems with several GPIO chips doing lockdep
debugging.
- Protect against driver unloading also when a GPIO line is only used
as IRQ for the GPIOLIB_IRQCHIP helpers.
- If the GPIO chip has no designated owner, assign the parent device
driver owner as owner.
- Consolidation of chained IRQ handler install/remove replacing all
call sites where irq_set_handler_data() and
irq_set_chained_handler() were done in succession with a combined
call to irq_set_chained_handler_and_data().
This series was created by Thomas Gleixner after the problem was
observed by Russell King.
- Tglx also made another series of patches switching
__irq_set_handler_locked() for irq_set_handler_locked() which is
way cleaner.
- Tglx and Jiang Liu wrote a good bunch of patches to make use of
irq_desc_get_xxx() accessors and avoid looking up irq_descs from
IRQ numbers. The goal is to get rid of the irq number from the
handlers in the IRQ flow which is nice.
- Rob Herring killed off the set_irq_flags() for all GPIO drivers.
This was an ARM specific function that is replaced with the generic
irq_modify_status() where special flags are actually needed.
- When an OF node has a pin range for its GPIOs, return -EPROBE_DEFER
if the pin controller isn't available. Pretty logical, yet needed
to be fixed.
- If a driver using GPIOLIB_IRQCHIP has its own irq_*_resources call
back, then call these instead of the defaults provided by the
GPIOLIB.
- Fix an undocumented ABI hole: named GPIOs were not properly
documented.
Driver improvements:
- Add get_direction() support to the generic GPIO driver, it's
strange that we didn't have that before.
- Make it possible to have input-only GPIO chips using the generic
GPIO driver.
- Clean out platform data support from the Emma Mobile (EM) driver
- Finegrained runtime PM support for the RCAR driver.
- Support r8a7795 (R-car H3) in the RCAR driver.
- Support interrupts on GPIOs 16 thru 31 in the DaVinci driver.
- Some consolidation and new support in the MPC8xxx driver, we now
support MPC5125.
- Preempt-RT-friendly patches: the OMAP, MPC8xxx, drivers uses raw
spinlocks making it work better with the realime patches.
- Interrupt support for the EXTRAXFS GPIO driver.
- Make the ETRAXFS GPIO driver support also ARTPEC-3.
- Interrupt and wakeup support for the BRCMSTB driver, also for
wakeup from S5 cold boot.
- Mask MXC IRQs during suspend.
- Improve OMAP2 GPIO set_debounce() to work according to spec.
- The VF610 driver handles IRQs properly.
New drivers:
- ZTE ZX GPIO driver"
* tag 'gpio-v4.3-1' of git://git.kernel.org/pub/scm/linux/kernel/git/linusw/linux-gpio: (87 commits)
Revert "gpio: extraxfs: fix returnvar.cocci warnings"
gpio: tc3589x: use static container helper
gpio: xlp: fix error return code
gpio: vf610: handle level IRQ's properly
gpio: max732x: Fix error handling in probe()
gpio: omap: fix clk_prepare/unprepare usage
gpio: omap: protect regs access in omap_gpio_irq_handler
gpio: omap: fix omap2_set_gpio_debounce
gpio: omap: switch to use platform_get_irq
gpio: omap: remove wrong irq_domain_remove usage in probe
gpiolib: add description for gpio irqchip fields in struct gpio_chip
gpio: extraxfs: fix returnvar.cocci warnings
gpiolib: irqchip: use different lockdep class for each gpio irqchip
gpio/grgpio: fix deadlock in grgpio_irq_unmap()
Documentation: gpio: consumer: describe active low property
gpio: mxc: fix section mismatch warning
gpio/mxc: mask gpio interrupts in suspend
gpio: omap: Fix missing raw locks conversion
gpio: brcmstb: support wakeup from S5 cold boot
gpio: brcmstb: Add interrupt and wakeup source support
...
Thomas Gleixner