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Prior to this commit there were 3 issues with our handling of the TS-pin:
1) There are 2 ways how the firmware can disable monitoring of the TS-pin
for designs which do not have a temperature-sensor for the battery:
a) Clearing bit 0 of the AXP20X_ADC_EN1 register
b) Setting bit 2 of the AXP288_ADC_TS_PIN_CTRL monitoring
Prior to this commit we were unconditionally setting both bits to the
value used on devices with a TS. This causes the temperature protection to
kick in on devices without a TS, such as the Jumper ezbook v2, causing
them to not charge under Linux.
This commit fixes this by using regmap_update_bits when updating these 2
registers, leaving the 2 mentioned bits alone.
The next 2 problems are related to our handling of the current-source
for the TS-pin. The current-source used for the battery temp-sensor (TS)
is shared with the GPADC. For proper fuel-gauge and charger operation the
TS current-source needs to be permanently on. But to read the GPADC we
need to temporary switch the TS current-source to ondemand, so that the
GPADC can use it, otherwise we will always read an all 0 value.
2) Problem 2 is we were writing hardcoded values to the ADC TS pin-ctrl
register, overwriting various other unrelated bits. Specifically we were
overwriting the current-source setting for the TS and GPIO0 pins, forcing
it to 80ųA independent of its original setting. On a Chuwi Vi10 tablet
this was causing us to get a too high adc value (due to a too high
current-source) resulting in the following errors being logged:
ACPI Error: AE_ERROR, Returned by Handler for [UserDefinedRegion]
ACPI Error: Method parse/execution failed \_SB.SXP1._TMP, AE_ERROR
This commit fixes this by using regmap_update_bits to change only the
relevant bits.
3) After reading the GPADC channel we were unconditionally enabling the
TS current-source even on devices where the TS-pin is not used and the
current-source thus was off before axp288_adc_read_raw call.
This commit fixes this by making axp288_adc_set_ts a nop on devices where
the ADC is not enabled for the TS-pin.
BugLink: https://bugzilla.redhat.com/show_bug.cgi?id=1610545
Fixes: 3091141d7803 ("iio: adc: axp288: Fix the GPADC pin ...")
Signed-off-by: Hans de Goede <hdegoede@redhat.com>
Cc: <Stable@vger.kernel.org>
Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
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IIO_TEMP scale value for temperature was incorrect and not in millicelsius
as required by the ABI documentation.
Signed-off-by: Matt Ranostay <matt.ranostay@konsulko.com>
Fixes: 27dec00ecf2d (iio: chemical: add Atlas pH-SM sensor support)
Cc: <stable@vger.kernel.org>
Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
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git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/staging
Pull staging/IIO driver updates from Greg KH:
"Here is the big staging and iio driver pull request for 4.21-rc1.
Lots and lots of tiny patches here, nothing major at all. Which is
good, tiny cleanups is nice to see. No new huge driver removal or
addition, this release cycle, although there are lots of good IIO
driver changes, addtions, and movement from staging into the "real"
part of the kernel, which is always great.
Full details are in the shortlog, and all of these have been in
linux-next for a while with no reported issues"
* tag 'staging-4.21-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/staging: (553 commits)
staging: mt7621-mmc: Correct spelling mistakes in comments
staging: wilc1000: fix missing read_write setting when reading data
mt7621-mmc: char * array declaration might be better as static const
mt7621-mmc: return statement in void function unnecessary
mt7621-mmc: Alignment should match open parenthesis
mt7621-mmc: Removed unnecessary blank lines
mt7621-mmc: Fix some coding style issues
staging: android: ashmem: doc: Fix spelling
staging: rtl8188eu: cleanup brace coding style issues
staging: rtl8188eu: add spaces around '&' in rtw_mlme_ext.c
staging: rtl8188eu: change return type of is_basicrate() to bool
staging: rtl8188eu: simplify null array initializations
staging: rtl8188eu: change order of declarations to improve readability
staging: rtl8188eu: make some arrays static in rtw_mlme_ext.c
staging: rtl8188eu: constify some arrays
staging: rtl8188eu: convert unsigned char arrays to u8
staging: rtl8188eu: remove redundant declaration in rtw_mlme_ext.c
staging: rtl8188eu: remove unused arrays WFD_OUI and WMM_INFO_OUI
staging: rtl8188eu: remove unnecessary parentheses in rtw_mlme_ext.c
staging: rtl8188eu: remove unnecessary comments in rtw_mlme_ext.c
...
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git://git.infradead.org/linux-platform-drivers-x86
Pull x86 platform driver updates from Andy Shevchenko:
- The USB Power Delivery discrete components now can be enumerated by
i2c-multi-instantiate driver via several resources under single ACPI
device node (ACPI ID is INT3515).
- Touchscreen support is added for the Mediacom Flexbook Edge 11.
- Mellanox driver got fixed due to updates in their firmware.
- The power management stub driver for AtomISP v2 is fixed in order to
support Intel Baytrail SoCs where same quirk is needed for S0ix to
work.
- Special key handling has been fixed for Favorites hotkey on Thinkpad,
and Screen LOCK on ASUS.
- Ideapad Yoga 2 13 has no HW rfkill switch, thus, driver has been
updated to support this.
- Few cleanups related to debugfs have been made in Intel IPS and Intel
PMC drivers. Besides that Intel PMC has been extended to show more
detailed information about Latency Tolerance
* tag 'platform-drivers-x86-v4.21-1' of git://git.infradead.org/linux-platform-drivers-x86: (41 commits)
platform/x86: mlx-platform: Convert to use SPDX identifier
Documentation/ABI: Add new attribute for mlxreg-io sysfs interfaces
platform/x86: mlx-platform: Allow mlxreg-io driver activation for new systems
platform/x86: mlx-platform: Fix LED configuration
platform/x86: mlx-platform: Fix tachometer registers
platform/x86: mlx-platform: Rename new systems product names
platform/x86: mlx-platform: Add definitions for new registers
platform/x86: intel_telemetry: convert to DEFINE_SHOW_ATTRIBUTE
platform/x86: intel_pmc_core: convert to DEFINE_SHOW_ATTRIBUTE
platform/x86: thinkpad_acpi: Cleanup quirks macros
platform/x86: touchscreen_dmi: Add info for the Mediacom Flexbook Edge 11
platform/x86: Fix config space access for intel_atomisp2_pm
platform/x86: Add the VLV ISP PCI ID to atomisp2_pm
platform/x86: intel_ips: Convert to use DEFINE_SHOW_ATTRIBUTE macro
platform/x86: intel_ips: Remove never happen condition
platform/x86: intel_ips: NULL check before some freeing functions is not needed
platform/x86: intel_ips: remove unnecessary checks in ips_debugfs_init
iio: inv_mpu6050: Use i2c_acpi_get_i2c_resource() helper
ACPI / scan: Create platform device for INT3515 ACPI nodes
platform/x86: i2c-multi-instantiate: Allow to have same slaves
...
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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
...
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adc5_get_dt_data uses a local, prop, feeds it to adc5_get_dt_channel_data,
and then puts the result into adc->chan_props. The problem is
adc5_get_dt_channel_data may not initialize that structure fully, so a
garbage value is used for prescale if the optional "qcom,pre-scaling" is
not defined in DT. adc5_read_raw then uses this as an array index,
generating a crash that looks like this:
[ 6.683186] Unable to handle kernel paging request at virtual address ffffff90e78c7964
Call trace:
qcom_vadc_scale_code_voltage_factor+0x74/0x104
qcom_vadc_scale_hw_calib_die_temp+0x20/0x60
qcom_adc5_hw_scale+0x78/0xa4
adc5_read_raw+0x3d0/0x65c
iio_channel_read+0x240/0x30c
iio_read_channel_processed+0x10c/0x150
qpnp_tm_get_temp+0xc0/0x40c
of_thermal_get_temp+0x7c/0x98
thermal_zone_get_temp+0xac/0xd8
thermal_zone_device_update+0xc0/0x38c
qpnp_tm_probe+0x624/0x81c
platform_drv_probe+0xe4/0x11c
really_probe+0x188/0x3fc
driver_probe_device+0xb8/0x188
__device_attach_driver+0x114/0x180
bus_for_each_drv+0xd8/0x118
__device_attach+0x180/0x27c
device_initial_probe+0x20/0x2c
bus_probe_device+0x78/0x124
deferred_probe_work_func+0xfc/0x138
process_one_work+0x3d8/0x8b0
process_scheduled_works+0x48/0x6c
worker_thread+0x488/0x7cc
kthread+0x24c/0x264
ret_from_fork+0x10/0x18
Unfortunately, when I went to add the initializer for this and tried to
boot it, my machine shut down immediately, complaining that it was
hotter than the sun. It appears that adc5_chans_pmic and adc5_chans_rev2
were initializing prescale_index as if it were directly a divisor,
rather than the index into adc5_prescale_ratios that it is.
Fix the uninitialized value, and change the static initialization to use
indices into adc5_prescale_ratios.
Signed-off-by: Evan Green <evgreen@chromium.org>
Reviewed-by: Matthias Kaehlcke <mka@chromium.org>
Cc: <Stable@vger.kernel.org>
Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
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Make it possible to use Exynos ADC driver on S5PV210 based devices.
Signed-off-by: Jonathan Bakker <xc-racer2@live.ca>
Signed-off-by: Paweł Chmiel <pawel.mikolaj.chmiel@gmail.com>
Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
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S5PV210's ADC variant is almost the same as v1 except that it has 10
channels and doesn't require the pmu register
Signed-off-by: Jonathan Bakker <xc-racer2@live.ca>
Signed-off-by: Paweł Chmiel <pawel.mikolaj.chmiel@gmail.com>
Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
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Currently, we're using the devm version of some but not all functions.
Switch to the devm version of iio_triggered_buffer_setup and
iio_device_register to simplify the code a bit and decrease the chance of
bugs.
Signed-off-by: Martin Kelly <martin@martingkelly.com>
Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
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This patch solves the register readback issue with the bit shift. When the
dac resolution was lower than the register size (ex. 12 bits out of 16
bits) the readback value was not shifted with the difference in bits and
the value was higher. Also a mask is applied on the read value in order to
get the value relative to the actual bit size.
Fixes: 0357e488b8 ("iio:dac:ad5686: Refactor the driver")
Signed-off-by: Mircea Caprioru <mircea.caprioru@analog.com>
Cc: <Stable@vger.kernel.org>
Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
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The AD5310R is a single channel DAC with 10-bit precision, which is
part of the same family as AD5311R, except that it uses the spi interface
instead of i2c. The device has a built-in 2.5V reference which is enabled
by default.
Another important difference is that the SPI write command operation is
16 bits long. The first four bits represent the command, while the
remaining 12 bits are for data. In the control reg, DB9 and DB10 are used
for power-down modes, while DB8 is the REF bit. In order to accommodate
this change, a new regmap type was defined and checked accordingly.
Because AD5310R does not have a readback register, the read_raw operation
will return "Operation is not supported".
Datasheet:
Link: http://www.analog.com/media/en/technical-documentation/data-sheets/AD5310R_5311R.pdf
Signed-off-by: Stefan Popa <stefan.popa@analog.com>
Signed-off-by: Mircea Caprioru <mircea.caprioru@analog.com>
Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
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When the 'info' structure inside indio_dev is left uninitialized,
a segmentation fault occurs.
Check the 'info' value before using it and if it is equal to
NULL, return with -EINVAL.
Signed-off-by: Andi Shyti <andi@etezian.org>
Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
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ACPI provides a generic helper to get I2C Serial Bus resources.
Use it instead of open coded variant.
Signed-off-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
Reviewed-by: Heikki Krogerus <heikki.krogerus@linux.intel.com>
Reviewed-by: Hans de Goede <hdegoede@redhat.com>
Acked-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
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We need the staging fixes in here as well.
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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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>
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Move ad2s90 resolver driver out of staging to the main tree.
Signed-off-by: Matheus Tavares <matheus.bernardino@usp.br>
Signed-off-by: Victor Colombo <victorcolombo@gmail.com>
Acked-by: Alexandru Ardelean <alexandru.ardelean@analog.com>
Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
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Generalize st_lsm6dsx_shub_read_oneshot in order to not use a fixed
read length and take into account iio channel realbits for single
read operations
Signed-off-by: Lorenzo Bianconi <lorenzo.bianconi@redhat.com>
Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
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The statement is indented too much by one level, fix this by
removing the extraneous tab.
Signed-off-by: Colin Ian King <colin.king@canonical.com>
Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
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Switch off ADC when going to low power mode, in case it has been left
running in buffer mode. Then re-enable it when resuming.
Signed-off-by: Fabrice Gasnier <fabrice.gasnier@st.com>
Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
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Add support for runtime PM & sleep. Move all regulator and clock management
to dedicated HW start/stop routines. Then rely on (runtime) PM OPS to
call them.
Signed-off-by: Fabrice Gasnier <fabrice.gasnier@st.com>
Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
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Move self-calibration routine to prepare routine.
- This is precursor patch to ease power management handling.
- This also allow to factorize few error cases (error handling).
Signed-off-by: Fabrice Gasnier <fabrice.gasnier@st.com>
Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
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Various 2-in-1's use KIOX010A and KIOX020A as HIDs for 2 KXCJ91008
accelerometers. The KIOX010A HID is for the one in the base and the
KIOX020A for the accelerometer in the keyboard.
Since userspace does not have a way yet to deal with (or ignore) the
accelerometer in the keyboard, this commit just adds the KIOX010A HID
for now so that display rotation will work.
Related: https://github.com/hadess/iio-sensor-proxy/issues/166
Signed-off-by: Hans de Goede <hdegoede@redhat.com>
Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
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This patch adds driver support for the Microchip MCP41xxx/42xxx family
of digital potentiometers:
DEVICE Wipers Positions Resistance (kOhm)
MCP41010 1 256 10
MCP41050 1 256 50
MCP41100 1 256 100
MCP42010 2 256 10
MCP42050 2 256 50
MCP42100 2 256 100
Datasheet: http://ww1.microchip.com/downloads/en/devicedoc/11195c.pdf
Signed-off-by: Chris Coffey <cmc@babblebit.net>
Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
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Before this patch we are registering the internal clocks (for example on
Meson8b, where the SAR ADC IP block implements the divider and gate
clocks) with the following names:
- /soc/cbus@c1100000/adc@8680#adc_div
- /soc/cbus@c1100000/adc@8680#adc_en
This is bad because the common clock framework uses the clock to create
a directory in <debugfs>/clk. With such name, the directory creation
(silently) fails and the debugfs entry ends up being created at the
debugfs root.
With this change, the new clock names are:
- c1108680.adc#adc_div
- c1108680.adc#adc_en
This matches the clock naming scheme used in the PWM, Ethernet and MMC
drivers. It also fixes the problem with debugfs.
The idea is shamelessly taken from commit b96e9eb62841c5 ("pwm: meson:
Fix mux clock names").
Fixes: 3921db46a8c5bc ("iio: Convert to using %pOF instead of full_name")
Signed-off-by: Martin Blumenstingl <martin.blumenstingl@googlemail.com>
Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
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devm_kasprintf() may return NULL on failure of internal allocation thus
the assignments to init.name are not safe if not checked. On error
meson_sar_adc_clk_init() returns negative values so -ENOMEM in the
(unlikely) failure case of devm_kasprintf() should be fine here.
Signed-off-by: Nicholas Mc Guire <hofrat@osadl.org>
Fixes: 3adbf3427330 ("iio: adc: add a driver for the SAR ADC found in Amlogic Meson SoCs")
Acked-by: Martin Blumenstingl <martin.blumenstingl@googlemail.com>
Tested-by: Martin Blumenstingl <martin.blumenstingl@googlemail.com>
Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
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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>
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git://git.kernel.org/pub/scm/linux/kernel/git/jic23/iio into staging-testing
Jonathan writes:
First set of new device support, features and cleanups for IIO in the 4.21 cycle
Along with the headline feature of 5 new drivers, we have the
substantial addition of auxilliary sensor support on the lsm6sdx
parts for ST. There has also been a good set of staging cleanup
in this period with more underway.
An ever increasing number of devices supported with just a new
ID which is a good sign that at least some manufacturers are
continuing to stabilise their interfaces.
New device support,
* ad7124
- New driver supporting Analog Devices' ad7124-4 and ad7124-8 parts
with the inevitable DT binding.
* ad7949
- New driver supporting Analog Devices' ad7949, AD7682 and AD7689 ADCs.
* rm3100
- New driver supporting PNIs RM3100 magnometer with bindings and
vendor prefix.
* ti-dac7311
- New driver supporting DAC7311, DAC6311 and DAC5311 TI DACs, with
DT bindings.
* vcnl5035
- New driver supporting the light sensor part of the VCNL4035, with
DT bindings
Features,
* bindings
- Add a generic ADC channel binding as we keep reinventing this
wheel.
* adc128s052
- Add IDs for additional pin compatible parts.
- Add APCI ID seen on E3940 UP squared boards.
* ad_sigma_delta
- Allow for custom data register overiding default.
* kxcjk1013
- Add KIOX0009 ACPI ID as seen on the Acer One 10.
* lsm6dsx
- Rework leading to...
- External sensor support using the built in I2C master.
- Initial support for a slave lis2mdl magnetometer.
* meson-saradc
- Add temperature sensor support and bindings.
* st_magn
- New ID for lsm9dsl_magn with bindings
- New ID for lis3de accelerometer
* tpl0102
- Add supprot for IIO_AVAIL_RANGE to report the range available
from this device to userspace and in kernel users.
Cleanups and minor fixes
* tools
- Allow outside specification of CFLAGS
* ad2s90
- Handle and spi_read error.
- Handle spi_setup failure
- Drop a pointless assignment.
- Prevent a potentail race by moving device registration to after
all other setup.
- Add missing scale attribute.
- Add a sanity check on channel type before trying to read it.
* ad2s1210
- Move to modern gpio descriptors.
- Drop a gpioin flag which made no sense as far as we can tell.
- Add dt table (bindings doc to follow when this is ready for
moving out of staging).
* ad5933
- Drop camel-case naming of ext_clk_hz.
- White space fixes.
* ad7150
- Local variable to shorten overly long line.
- Alignment and line break fixes.
* ad7280a
- Handle an error path that was previously ignored.
- Use crc8.h to build the crc table replacing custom code.
- Avoid unecessary cast.
- Power down the device if an error happens in probe
- Use devm routines to simplify probe and remove.
* ad7606
- Alignment fixes.
* ad7780
- This worked as long as by coincidence an uninitialized value
was 0. Lets not rely on that.
- Ensure gain update is only used with the ad778x chips that
actually support it.
- Tidy up pattern mask generation.
- Read regulator when scale is requested (which should be infrequent)
as it might have changed from initialization.
* ad7816
- Move to modern gpio descriptors
- Don't use a busy_pin for ad7818 as there isn't one.
- Ensure RD/WR and CONVST pins are outputs (previously they
were brought up as inputs which doesn't seem to make any sense)
- DT id table.
* adc128s052
- SPDX
* adt7316
- Alignment fix.
- Fix data reading. When using I2C the driver never actually
used the value read. This has been broken a very long time
hence no rush to fix it now + the driver is undergoing a lot
of cleanup.
- Sanity check that the i2c read didn't fail to actually read
anything.
* dpot-dac
- Mark a switch full through with slightly different text so that
gcc doesn't warn on it.
* gyro-adc
- Fix a wrong file in the MAINTAINERS entry and add binding doc to the
listed files.
* ina2xx
- Add some early returns to clarify error paths in switch.
* lsm6dsx
- MAINTAINERS entry.
* max11100
- SPDX
* max9611
- SPDX
* mcp4131
- use of_device_get_match_data in preference to spi_get_device_id
approach.
* rcar-adc
- SPDX
* sc27xx
- Add ADC conversion timeout support to avoid possible fault.
* ssp_sensors
- Don't free managed resources manually.
* st-magn
- Add a comment to avoid future confusion over when to use -magn
postfix (on multi chip in package parts)
- Add BDU register for LIS3MDL where it seems to have been missed.
* st-sensors
- Minor spelling, grammar etc fixes.
* tpl0102
- Use a pointer rather than an index of an array to improve conciseness.
* tag 'iio-for-4.21a' of git://git.kernel.org/pub/scm/linux/kernel/git/jic23/iio: (80 commits)
Staging: iio: adt7316: Add an extra check for 'ret' equals to 0
Staging: iio: adt7316: Fix i2c data reading, set the data field
dt-bindings: iio: adc: Add docs for ad7124
iio: adc: Add ad7124 support
dt-bindings: iio: adc: Add common ADCs properties to a separate file
iio: ad_sigma_delta: Allow to provide custom data register address
staging: iio: ad7816: Add device tree table.
iio: imu: st_lsm6dsx: add entry in MAINTAINERS file
iio: potentiometer: mcp4131: use of_device_get_match_data()
staging: iio: adc: ad7280a: use devm_* APIs
staging: iio: adc: ad7280a: power down the device on error in probe
dt-bindings: iio: imu: st_lsm6dsx: add support to i2c pullup resistors
iio: imu: st_lsm6dsx: add hw FIFO support to i2c controller
iio: imu: st_lsm6dsx: add st_lsm6dsx_push_tagged_data routine
iio: imu: st_lsm6dsx: add i2c embedded controller support
iio: imu: st_lsm6dsx: introduce st_lsm6dsx_sensor_set_enable routine
iio: imu: st_lsm6dsx: introduce ST_LSM6DSX_ID_EXT sensor ids
iio: imu: st_lsm6dsx: remove static from st_lsm6dsx_set_watermark
iio: imu: st_lsm6dsx: reload trimming parameter at bootstrap
iio: imu: st_lsm6dsx: introduce locked read/write utility routines
...
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The ad7124-4 and ad7124-8 are a family of 4 and 8 channel sigma-delta ADCs
with 24-bit precision and reference.
Three power modes are available which in turn affect the output data rate:
* Full power: 9.38 SPS to 19,200 SPS
* Mid power: 2.34 SPS to 4800 SPS
* Low power: 1.17 SPS to 2400 SPS
The ad7124-4 can be configured to have four differential inputs, while
ad7124-8 can have 8. Moreover, ad7124 also supports per channel
configuration. Each configuration consists of gain, reference source,
output data rate and bipolar/unipolar configuration.
Datasheets:
Link: http://www.analog.com/media/en/technical-documentation/data-sheets/AD7124-4.pdf
Link: http://www.analog.com/media/en/technical-documentation/data-sheets/ad7124-8.pdf
Signed-off-by: Stefan Popa <stefan.popa@analog.com>
Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
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Some newer devices from the Sigma-Delta ADC family do have their data
register at a different address than the current default address. Add a
parameter to the ad_sigma_delta_info struct which allows to override the
default address.
Signed-off-by: Lars-Peter Clausen <lars@metafoo.de>
Signed-off-by: Stefan Popa <stefan.popa@analog.com>
Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
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Try to get the device's data using OF API. In case of failure, fallback
to the spi_get_device_id() method.
Signed-off-by: Slawomir Stepien <sst@poczta.fm>
Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
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Introduce hw FIFO support to lsm6dsx i2c controller.
st_lsm6dsx sensor-hub relies on SLV0 for slave configuration since SLV0
is the only channel that can be used to write into i2c slave devices.
SLV{1,2,3} channels are used to read external data and push them into
the hw FIFO
Signed-off-by: Lorenzo Bianconi <lorenzo.bianconi@redhat.com>
Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
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Introduce st_lsm6dsx_push_tagged_data routine to push samples
to iio buffers. st_lsm6dsx_push_tagged_data will be reused adding
hw fifo support to st_lsm6dsx i2c embedded controller in order to
improve code readability
Signed-off-by: Lorenzo Bianconi <lorenzo.bianconi@redhat.com>
Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
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i2c controller embedded in lsm6dx series can connect up to four
slave devices using accelerometer sensor as trigger for i2c
read/write operations.
Introduce sensor hub support for lsm6dso sensor. Add register map
for lis2mdl magnetometer sensor.
In order to perform single read/write operations st_lsm6dsx driver
relies on SLV0 channel (hw FIFO is not supported yet)
Signed-off-by: Lorenzo Bianconi <lorenzo.bianconi@redhat.com>
Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
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Add st_lsm6dsx_sensor_set_enable routine and remove
st_lsm6dsx_sensor_{enable/disable} ones in order to make the code more
readable and remove unnecessary functions
Signed-off-by: Lorenzo Bianconi <lorenzo.bianconi@redhat.com>
Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
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Add ST_LSM6DSX_ID_EXT{0,1,2} sensor ids as reference for slave devices
connected to st_lsm6dsx i2c controller. Moreover introduce odr dependency
between accel and ext devices since i2c embedded controller relies on the
accelerometer sensor as bus read/write trigger so we need to enable accel
device at odr = max(accel_odr, ext_odr) in order to properly communicate
with i2c slave devices
Signed-off-by: Lorenzo Bianconi <lorenzo.bianconi@redhat.com>
Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
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Remove static qualifier from st_lsm6dsx_set_watermark routine in
order to be reused supporting st_lsm6dsx i2c controller
Signed-off-by: Lorenzo Bianconi <lorenzo.bianconi@redhat.com>
Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
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Perform a complete device reset at bootstrap reloading trimming parameter
after sw reset is completed. Device sw reset/boot is explained here:
https://www.st.com/resource/en/application_note/dm00517282.pdf,
section 5.7
Signed-off-by: Lorenzo Bianconi <lorenzo.bianconi@redhat.com>
Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
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Add st_lsm6dsx_update_bits_locked, st_lsm6dsx_read_locked and
st_lsm6dsx_write_locked utility routines in order to guarantee
the bus access is atomic respect to reg page configuration.
This is a preliminary patch to add i2c sensor hub support since
i2c master registers are accessed through a reg page multiplexer
Signed-off-by: Lorenzo Bianconi <lorenzo.bianconi@redhat.com>
Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
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Sometimes the ADC controller met some problems, and it will not complete
the data conversion, that will can not wake up the read process any more
to block users. So we should add one maximum conversion time to avoid
this issue.
Signed-off-by: Freeman Liu <freeman.liu@unisoc.com>
Signed-off-by: Baolin Wang <baolin.wang@linaro.org>
Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
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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>
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This commit add support for STMicroelectronics lis3de accelerometer.
Datasheet for this device can be found here:
https://www.st.com/resource/en/datasheet/lis3de.pdf
Signed-off-by: Heiko Stuebner <heiko.stuebner@bq.com>
Acked-by: Rob Herring <robh@kernel.org>
Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
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Add support for VCNL4035, which is capable of Ambient light
sensing (ALS) and proximity function. This patch adds support
only for ALS function
Signed-off-by: Parthiban Nallathambi <pn@denx.de>
Reviewed-by: Andy Shevchenko <andy.shevchenko@gmail.com>
Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
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This patch updates license to use SPDX-License-Identifier
instead of verbose license text.
Signed-off-by: Kuninori Morimoto <kuninori.morimoto.gx@renesas.com>
Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
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This patch updates license to use SPDX-License-Identifier
instead of verbose license text.
Signed-off-by: Kuninori Morimoto <kuninori.morimoto.gx@renesas.com>
Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
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This patch updates license to use SPDX-License-Identifier
instead of verbose license text.
Signed-off-by: Kuninori Morimoto <kuninori.morimoto.gx@renesas.com>
Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
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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>
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Channel 6 of the SAR ADC can be switched between two inputs:
SAR_ADC_CH6 input (an actual pad on the SoC) and the signal from the
temperature sensor inside the SoC.
To get usable results from the temperature sensor we need to read the
corresponding calibration data from the eFuse and pass it to the SAR ADC
registers. If the temperature sensor is not calibrated (the eFuse data
contains a bit for this) then the driver will only register the
iio_chan_spec's for voltage measurements.
This only enables the temperature sensor for the Meson8 SoC. Meson8b and
Meson8m2 SoCs can be supported in the future as well but we first need
a way to pass the fifth TSC (temperature sensor coefficient) bit to the
HHI register area (apart from that the infrastructure as already
implemented for Meson8 can be used). On the 64-bit SoCs (GXBB, GXL and
GXM) the temperature sensor inside SAR ADC is firmware-controlled (by
BL30, we can simply use the SCPI hwmon driver to get the chip
temperature).
To keep the devicetree interface backwards compatible we simply skip the
temperature sensor initialization if no eFuse nvmem cell is passed via
devicetree.
The public documentation for the SAR ADC IP block does not explain how
to use the registers to read the temperature. The logic from this patch
is based on reading and understanding Amlogic's GPL kernel sources.
Signed-off-by: Martin Blumenstingl <martin.blumenstingl@googlemail.com>
Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
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Report the step range of the respective potentiometers that are
possible to userspace.
Signed-off-by: Matt Ranostay <matt.ranostay@konsulko.com>
Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
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It is a driver for Texas Instruments 8/10/12-bit 1-channel
compatible with DAC6311 and DAC5311 chips.
Datasheet of this chip:
http://www.ti.com/lit/ds/symlink/dac7311.pdf
Signed-off-by: Charles-Antoine Couret <charles-antoine.couret@essensium.com>
Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
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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>
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