This patch adds a `regmap_update_bits()` like API to the ADIS library.
It provides locked and unlocked variant.
Signed-off-by: Nuno Sá <nuno.sa@analog.com>
Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
There are some ADIS devices that can configure the data ready pin
polarity. Hence, we cannot hardcode our IRQ mask as IRQF_TRIGGER_RISING
since we might want to have it as IRQF_TRIGGER_FALLING.
Signed-off-by: Nuno Sá <nuno.sa@analog.com>
Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
This patch adds support for a managed device version of
adis_setup_buffer_and_trigger. It works exactly as the original
one but it calls all the devm_iio_* functions to setup an iio
buffer and trigger. Hence we do not need to care about cleaning those
and we do not need to support a remove() callback for every driver using
the adis library.
Signed-off-by: Nuno Sá <nuno.sa@analog.com>
Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
The iio_triggered_buffer_{predisable,postenable} functions attach/detach
poll functions.
In most cases the iio_triggered_buffer_postenable() should be called first
to attach the poll function, and then the driver can init the data to be
triggered.
In this case it's the other way around: the DMA code should be initialized
before the attaching the poll function and the reverse should be done when
un-initializing.
To make things easier when removing the iio_triggered_buffer_postenable() &
iio_triggered_buffer_predisable() functions from the IIO core API, the DMA
code has been moved into preenable() for init, and postdisable() for
uninit.
Signed-off-by: Alexandru Ardelean <alexandru.ardelean@analog.com>
Reviewed-by: Ludovic Desroches <ludovic.desroches@microchip.com>
Reviewed-by: Eugen Hristev <eugen.hristev@microchip.com>
Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
This change will allow the at91-sama5d2_adc driver to use other triggers
than it's own.
In particular, tested with the sysfs trigger.
To be able to achieve this functionality, some changes were required:
1) Do not enable/disable channels when enabling/disabling the trigger.
This is because the trigger is enabled/disabled only for our trigger
(obviously). We need channels enabled/disabled regardless of what trigger is
being used.
2) Cope with DMA : DMA cannot be used when using another type of trigger.
Other triggers work through pollfunc, so we get polled anyway on every trigger.
Thus we have to obtain data at every trigger.
3) When to start conversion? The usual pollfunc (store time from subsystem)
would be in hard irq and this would be a good way, but current iio subsystem
recommends to have it in the threaded irq. Thus adding software start
code in this handler.
4) Buffer config: we need to setup buffer regardless of our own device's
trigger. We may get one attached later.
5) IRQ handling: we use our own device IRQ only if it's our own trigger
and we do not use DMA . If we use DMA, we use the DMA controller's IRQ.
Signed-off-by: Eugen Hristev <eugen.hristev@microchip.com>
Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
It can happen that on IRQ trigger, not all conversions are done if
we are enabling multiple channels.
The IRQ is triggered on first EOC (end of channel), but it can happen
that not all channels are done. This leads into erroneous reports to
userspace (zero values or previous values).
To solve this, in trigger handler, check if the mask of done channels
is the same as the mask of active scan channels.
If it's the same, proceed and push to buffers. Otherwise, use usleep
to sleep until the conversion is done or we timeout.
Normally, it should happen that in a short time fashion, all channels are
ready, since the first IRQ triggered.
If a hardware fault happens (for example the clock suddently dissappears),
the handler will not be completed, in which case we do not report anything to
userspace anymore.
Also, change from using the EOC interrupts to DRDY interrupt.
This helps with the fact that not 'n' interrupt statuses are enabled,
each being able to trigger an interrupt, and instead only data ready
interrupt can wake up the CPU. Like this, when data is ready, check in
handler which and how many channels are done. While the DRDY is raised,
other IRQs cannot occur. Once the channel data is being read, we ack the
IRQ and finish the conversion.
Signed-off-by: Eugen Hristev <eugen.hristev@microchip.com>
Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
Enables probing via ACPI PRP0001 route and removes an example of
an approach we no longer want people to copy.
Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
Reviewed-by: Alexandru Ardelean <alexandru.ardelean@analog.com>
Enables probing via ACPI PRP0001 and removes an example that we don't
want people to cut and paste into new drivers.
Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
Reviewed-by: Alexandru Ardelean <alexandru.ardelean@analog.com>
Enables probing via ACPI PRP0001 but mostly about removing examples
that might be copied to new drivers.
Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
Reviewed-by: Alexandru Ardelean <alexandru.ardelean@analog.com>
Also drops ifdef protections for CONFIG_OF.
Enables probing via ACPI PRP0001 and removes an example that might be
cut and paste into new drivers.
Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
Reviewed-by: Alexandru Ardelean <alexandru.ardelean@analog.com>
Enables ACPI probing via PRP0001 and removes an example that might
be cut and paste to a new driver.
Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
Reviewed-by: Alexandru Ardelean <alexandru.ardelean@analog.com>
Enables probing via the ACPI PRP0001 route but more is mosty about
removing examples of this that might get copied into new drivers.
Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
Reviewed-by: Alexandru Ardelean <alexandru.ardelean@analog.com>
Whilst this enables ACPI binding or the device via PRP0001 the
primary aim is to remove potential for these two things to be
cut and paste into new drivers.
Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
Reviewed-by: Alexandru Ardelean <alexandru.ardelean@analog.com>
Enables ACPI DSDT to probe via PRP0001 and the compatible property. Also
removes the ifdef protections for CONFIG_OF.
Signed-off-by: Nishant Malpani <nish.malpani25@gmail.com>
Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
Atlas Scientific RTD-SM OEM sensor reads temperature using
resistance temperature detector technology.
Signed-off-by: Matt Ranostay <matt.ranostay@konsulko.com>
Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
Replace the for loops of the vnt_update_top_rates function by the fls
function.
The purpose of the two for loops is to find the most significant bit set
in a range of bits. So, they can be replace by the fls function (find
last set) with a previous mask to define the range.
This way avoid the iteration over unnecessary for loops.
The header "linux/bits.h" can be remove as it is included in the header
"linux/bitops.h".
Signed-off-by: Oscar Carter <oscar.carter@gmx.com>
Link: https://lore.kernel.org/r/20200420155246.4925-1-oscar.carter@gmx.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Replace the for loop by a ternary operator whose condition is an AND
bitmask against the priv->basic_rates variable.
The purpose of the for loop was to check if any of bits from RATE_54M to
RATE_6M was set, but it's not necessary to check every individual bit.
The same result can be achieved using only one single mask which
comprises all the commented bits.
This way avoid the iteration over an unnecessary for loop.
Also change the return type to bool because it's the type that this
function returns.
Signed-off-by: Oscar Carter <oscar.carter@gmx.com>
Link: https://lore.kernel.org/r/20200418134553.6415-1-oscar.carter@gmx.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
gasket_sysfs_register_store() invokes get_mapping(), which returns a
reference of the specified gasket_sysfs_mapping object to "mapping" with
increased refcnt.
When gasket_sysfs_register_store() returns, local variable "mapping"
becomes invalid, so the refcount should be decreased to keep refcount
balanced.
The reference counting issue happens in one exception handling path of
gasket_sysfs_register_store(). When gasket_dev is NULL, the function
forgets to decrease the refcnt increased by get_mapping(), causing a
refcnt leak.
Fix this issue by calling put_mapping() when gasket_dev is NULL.
Signed-off-by: Xiyu Yang <xiyuyang19@fudan.edu.cn>
Signed-off-by: Xin Tan <tanxin.ctf@gmail.com>
Link: https://lore.kernel.org/r/1587618941-13718-1-git-send-email-xiyuyang19@fudan.edu.cn
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
gasket_sysfs_put_attr() invokes get_mapping(), which returns a reference
of the specified gasket_sysfs_mapping object to "mapping" with increased
refcnt.
When gasket_sysfs_put_attr() returns, local variable "mapping" becomes
invalid, so the refcount should be decreased to keep refcount balanced.
The reference counting issue happens in one path of
gasket_sysfs_put_attr(). When mapping attribute is unknown, the function
forgets to decrease the refcnt increased by get_mapping(), causing a
refcnt leak.
Fix this issue by calling put_mapping() when put attribute fails due to
unknown attribute.
Signed-off-by: Xiyu Yang <xiyuyang19@fudan.edu.cn>
Signed-off-by: Xin Tan <tanxin.ctf@gmail.com>
Link: https://lore.kernel.org/r/1587618895-13660-1-git-send-email-xiyuyang19@fudan.edu.cn
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Fix the following gcc warning:
drivers/staging/rtl8723bs/hal/hal_btcoex.c:45:26: warning: ‘ioStaString’
defined but not used [-Wunused-const-variable=]
static const char *const ioStaString[] = {
^~~~~~~~~~~
drivers/staging/rtl8723bs/hal/hal_btcoex.c:38:26: warning:
‘h2cStaString’ defined but not used [-Wunused-const-variable=]
static const char *const h2cStaString[] = {
^~~~~~~~~~~~
drivers/staging/rtl8723bs/hal/hal_btcoex.c:33:26: warning:
‘BtLinkRoleString’ defined but not used [-Wunused-const-variable=]
static const char *const BtLinkRoleString[] = {
^~~~~~~~~~~~~~~~
drivers/staging/rtl8723bs/hal/hal_btcoex.c:23:26: warning:
‘BtSpecString’ defined but not used [-Wunused-const-variable=]
static const char *const BtSpecString[] = {
^~~~~~~~~~~~
drivers/staging/rtl8723bs/hal/hal_btcoex.c:15:26: warning:
‘BtProfileString’ defined but not used [-Wunused-const-variable=]
static const char *const BtProfileString[] = {
^~~~~~~~~~~~~~~
Reported-by: Hulk Robot <hulkci@huawei.com>
Signed-off-by: Jason Yan <yanaijie@huawei.com>
Link: https://lore.kernel.org/r/20200417073310.40893-1-yanaijie@huawei.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Current code skip some configuration during joining an IBSS network.
Indeed, it seems that this configuration is not used in IBSS. However,
it would be harmless to set them. In add, we would prefer to keep
association processes for ad-hoc and managed networks the closest as
possible. It also ensures the values of internal parameters of the
firmware.
Therefore, apply them unconditionally.
Signed-off-by: Jérôme Pouiller <jerome.pouiller@silabs.com>
Link: https://lore.kernel.org/r/20200420160311.57323-6-Jerome.Pouiller@silabs.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
The firmware is able to filter beacons and send a notification if one or
multiple beacons are not received. Note that it send this notification
only once. Only if it receive beacons gain, it send a new notification.
Currently, the driver handle the connection loss itself (see
wfx_cqm_bssloss_sm()). It send null frames and watch the answers.
This patch fixes all this mess:
- settle firmware to send a notification on the first beacon loss
- call ieee80211_beacon_loss() and let mac80211 handle all the process
- since we do have notification for each beacon loss, add a period
task that call ieee80211_beacon_loss() until we receive "REGAIN"
notification.
Thus, we can drop the ugly wfx_cqm_bssloss_sm() and
wfx_bss_params_work().
Signed-off-by: Jérôme Pouiller <jerome.pouiller@silabs.com>
Link: https://lore.kernel.org/r/20200420160311.57323-3-Jerome.Pouiller@silabs.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Jonathan writes:
First set of new IIO device support, features and cleanup for the 5.8 cycle
Usual mix of new drivers, new support in old drivers and lots of minor
cleanup. Yaml conversions also continue to trickle in (plenty more to go!)
New device support
* ad7476
- Add ad7091 support (ID only)
* ad9467
- New driver for this 200/250 MSPS adi-axi-adc and SPI attached ADC.
* adi-axi-adc
- New driver to support ADIs generic AXI ADC IP core, used to provide
high speed interfaces to ADCs (JESD204B/C or parallel interfaces). Usually
paired with a device using a slow configuration interface (spi etc)
Includes DT bindings and some fixes for fpga headers.
* bmg160
- Add support for BMI088 (ID only)
* max1241
- New driver for this ADC.
* st_sensors
- Add support for LIS2HH12 accelerometer
* sx9310
- New driver supporting sx9310 and sx9311 proximity sensors.
Yaml DT binding conversions
* rockchip-saradc (including adding some missing parts)
* stm32-dac
* tsl2563
* vcnl4000
Features
* st_lsm6dsx
- Add LIS3MDL as a possible sensor hub device.
* vcnl4000
- Add new concept of near level (from DT) to provide to userspace which
often needs to have some calibrated concept of 'near'.
Cleanups, minor fixes etc.
* core
- Use snprintf for functions where strings are built and there is
potential for overflow.
- Correct docs to indicate mlock should not be used directly by drivers.
- Fix up accidental dropping of a patch to use bitmap_zalloc.
- Stop allowing enabling of buffers with no channels enabled.
- Drop unused 'stufftoread' from iio_buffer.
- Drop scan_el_attrs form iio_buffer as unused.
- Reorder sanity checks in __iio_device_register to fail earlier.
- Drop all the devm_ runregister / free functions from IIO as they
were never used and encourage poor design.
* dma-buffer
- Tidy up includes.
* dma-engine-buffer
- Provide dev-managed allocator.
- Fix an issue with printing a size_t
* cross subsystem (kxsd9, bmg160, mpu3050, bmi160, mpu6050, bmc150)
- Replace some unnecessary casts of error ptrs and whilst there.
use the %pe printf parameter to print them in a more useful fashion.
* cross subsystem
- Drop casts in calls to regmap_bulk_read as they make no sense.
- Use devm_platform_ioremap_resource to reduce boilerplate.
- Fix typos in Analog Devices.
* counters/104-quad
- Add Syed Nayyar Waris as an additional maintainer.
* ad7476
- Generate CONVST signal internally rather than requiring external
trigger. Add sysfs read back as can now do so.
- use devm_add_action_or_reset to tidy up error and remove handling.
* ad7793
- Switch to read_avail from explicit attribute. Mostly done to avoid
confusing people with a - sign (without surounding spaces) that
was correct but checkpatch didn't like.
* adis library
- Add missing newlines at end of error messages.
* adis16400
- Use DEFINE_DEBUGS_ATTRIBUTE rather than DEFINE_SIMPLE_ATTR.
* adis16460
- Use DEFINE_DEBUGS_ATTRIBUTE rather than DEFINE_SIMPLE_ATTR.
* ad_sigma_delta
- Move some channel definitions into individual drivers to avoid
having to deal with complex options.
* ak8974
- Silence an error on deffered probe.
* bmp280
- Harden against IRQ before registration.
- Convert to read_avail instead of opencoding the equivalent.
- Explicitly mark GPIO as optional.
- Cleanup casts.
- Remove line breaks from strings.
* htts221
- Replace direct access to platform_data with dev_get_platdata().
- Use device properties rather than device tree ones to allow ACPI
probing.
- Casting cleanups.
* intel_mrfld_adc
- Don't use unaligned accessor for aligned data.
* isl29125
- Reorder buer pre and post hooks to allow for coming core rework.
* ltc2983
- Remove comp to bool.
* max1363
- Stop using mlock from the iio_dev directly in favour of a local lock
with clearly defined scope.
* max30100
- Use generic device properties to allow ACPI probe.
* mpu6050
- Convert to i2c_new_client_device.
- Add debugfs register access.
* st_lsm6dsx
- Provide means of configuring full scale on slave device if supported.
- Drop include of st_sensors header to get one value. Its not otherwise
used by this driver.
* st-sensors
- Replace direct access to platform_data with dev_get_platdata().
- Casting cleanups.
- Avoid splitting strings.
* st_uvis25
- Casting cleanups.
* tsl2563
- Typo fix.
* tsl2772
- scnprintf in a non obvious string building usecase. Note also 'fixes'
a wrong calculation of remaining space that couldn't actually cause
any trouble as there was lots of room.
* xilinx-xadc
- Fix Lars-Peter spelling his own name wrong :) + additional typos.
* tag 'iio-for-5.8a' of git://git.kernel.org/pub/scm/linux/kernel/git/jic23/iio: (101 commits)
iio: magnetometer: ak8974: Silence deferred-probe error
Documentation: ABI: document IIO in_proximity_nearlevel file
iio: vcnl4000: Export near level property for proximity sensor
dt-bindings: iio: light: vcnl4000: Add proximity-near-level
dt-bindings: iio: Introduce common properties for iio sensors
dt-bindings: iio: vcnl4000: convert bindings to YAML format
iio: Fix misspellings of "Analog Devices"
iio: light: isl29125: fix iio_triggered_buffer_{predisable,postenable} positions
iio: adc: fsl-imx25-gcq: Use devm_platform_ioremap_resource
iio: adc: at91-adc: Use devm_platform_ioremap_resource
iio: adc: sun4i-gpadc-iio: Use devm_platform_ioremap_resource
iio:light:ltr501: Drop unnecessary cast of parameter in regmap_bulk_read
iio:magn:mmc35240: Drop unnecessary casts of val parameter in regmap_bulk*
iio:imu:mpu6050: Tidy up parameters to regmap_bulk functions.
iio:chemical:bme680: Tidy up parameters to regmap_bulk_read
iio:chemical:atlas-sensor: Drop unnecessary explicit casts in regmap_bulk_read calls
iio:accel:mxc4005: Drop unnecessary explicit casts in regmap_bulk_read calls
iio: imu: st_lsm6dsx: drop huge include in sensor-hub driver
iio: buffer: drop devm_iio_kfifo_free() API call
iio: buffer: drop devm_iio_hw_consumer_free() API call
...
It's not uncommon that voltage regulator becomes available later during
kernel's boot process. This patch adds info message about unavailable
regulators in a case of the deferred-probe error and also amends the
error message with a error code.
Signed-off-by: Dmitry Osipenko <digetx@gmail.com>
Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
