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git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/driver-core
Pull driver core updates from Greg KH:
"Here is a small set of changes for 5.6-rc1 for the driver core and
some firmware subsystem changes.
Included in here are:
- device.h splitup like you asked for months ago
- devtmpfs minor cleanups
- firmware core minor changes
- debugfs fix for lockdown mode
- kernfs cleanup fix
- cpu topology minor fix
All of these have been in linux-next for a while with no reported
issues"
* tag 'driver-core-5.6-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/driver-core: (22 commits)
firmware: Rename FW_OPT_NOFALLBACK to FW_OPT_NOFALLBACK_SYSFS
devtmpfs: factor out common tail of devtmpfs_{create,delete}_node
devtmpfs: initify a bit
devtmpfs: simplify initialization of mount_dev
devtmpfs: factor out setup part of devtmpfsd()
devtmpfs: fix theoretical stale pointer deref in devtmpfsd()
driver core: platform: fix u32 greater or equal to zero comparison
cpu-topology: Don't error on more than CONFIG_NR_CPUS CPUs in device tree
debugfs: Return -EPERM when locked down
driver core: Print device when resources present in really_probe()
driver core: Fix test_async_driver_probe if NUMA is disabled
driver core: platform: Prevent resouce overflow from causing infinite loops
fs/kernfs/dir.c: Clean code by removing always true condition
component: do not dereference opaque pointer in debugfs
drivers/component: remove modular code
debugfs: Fix warnings when building documentation
device.h: move 'struct driver' stuff out to device/driver.h
device.h: move 'struct class' stuff out to device/class.h
device.h: move 'struct bus' stuff out to device/bus.h
device.h: move dev_printk()-like functions to dev_printk.h
...
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device.h has everything and the kitchen sink when it comes to struct
device things, so split out the struct driver things things to a
separate .h file to make things easier to maintain and manage over time.
Cc: "Rafael J. Wysocki" <rafael@kernel.org>
Cc: Suzuki K Poulose <suzuki.poulose@arm.com>
Cc: Saravana Kannan <saravanak@google.com>
Cc: Heikki Krogerus <heikki.krogerus@linux.intel.com>
Link: https://lore.kernel.org/r/20191209193303.1694546-7-gregkh@linuxfoundation.org
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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device.h has everything and the kitchen sink when it comes to struct
device things, so split out the struct class things things to a separate
.h file to make things easier to maintain and manage over time.
Cc: "Rafael J. Wysocki" <rafael@kernel.org>
Cc: Suzuki K Poulose <suzuki.poulose@arm.com>
Cc: Saravana Kannan <saravanak@google.com>
Cc: Heikki Krogerus <heikki.krogerus@linux.intel.com>
Link: https://lore.kernel.org/r/20191209193303.1694546-6-gregkh@linuxfoundation.org
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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device.h has everything and the kitchen sink when it comes to struct
device things, so split out the struct bus things things to a separate
.h file to make things easier to maintain and manage over time.
Cc: "Rafael J. Wysocki" <rafael@kernel.org>
Cc: Suzuki K Poulose <suzuki.poulose@arm.com>
Cc: Saravana Kannan <saravanak@google.com>
Cc: Heikki Krogerus <heikki.krogerus@linux.intel.com>
Link: https://lore.kernel.org/r/20191209193303.1694546-5-gregkh@linuxfoundation.org
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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device.h has everything and the kitchen sink when it comes to struct
device things, so split out the printk-specific things to a separate .h
file to make things easier to maintain and manage over time.
Cc: Suzuki K Poulose <suzuki.poulose@arm.com>
Cc: "Rafael J. Wysocki" <rafael.j.wysocki@intel.com>
Cc: Saravana Kannan <saravanak@google.com>
Cc: Heikki Krogerus <heikki.krogerus@linux.intel.com>
Link: https://lore.kernel.org/r/20191209193303.1694546-4-gregkh@linuxfoundation.org
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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The devtmpfs functions do not need to be in device.h as only the driver
core uses them, so move them to the private .h file for the driver core.
Cc: "Rafael J. Wysocki" <rafael@kernel.org>
Cc: Suzuki K Poulose <suzuki.poulose@arm.com>
Cc: Saravana Kannan <saravanak@google.com>
Cc: Heikki Krogerus <heikki.krogerus@linux.intel.com>
Link: https://lore.kernel.org/r/20191209193303.1694546-3-gregkh@linuxfoundation.org
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/staging
Pull staging and IIO updates from Greg KH:
"Here is the big staging/iio driver patches for 5.6-rc1
Included in here are:
- lots of new IIO drivers and updates for that subsystem
- the usual huge quantity of minor cleanups for staging drivers
- removal of the following staging drivers:
- isdn/avm
- isdn/gigaset
- isdn/hysdn
- octeon-usb
- octeon ethernet
Overall we deleted far more lines than we added, removing over 40k of
old and obsolete driver code.
All of these changes have been in linux-next for a while with no
reported issues"
* tag 'staging-5.6-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/staging: (353 commits)
staging: most: usb: check for NULL device
staging: next: configfs: fix release link
staging: most: core: fix logging messages
staging: most: core: remove container struct
staging: most: remove struct device core driver
staging: most: core: drop device reference
staging: most: remove device from interface structure
staging: comedi: drivers: fix spelling mistake "to" -> "too"
staging: exfat: remove fs_func struct.
staging: wilc1000: avoid mutex unlock without lock in wilc_wlan_handle_txq()
staging: wilc1000: return zero on success and non-zero on function failure
staging: axis-fifo: replace spinlock with mutex
staging: wilc1000: remove unused code prior to throughput enhancement in SPI
staging: wilc1000: added 'wilc_' prefix for 'struct assoc_resp' name
staging: wilc1000: move firmware API struct's to separate header file
staging: wilc1000: remove use of infinite loop conditions
staging: kpc2000: rename variables with kpc namespace
staging: vt6656: Remove memory buffer from vnt_download_firmware.
staging: vt6656: Just check NEWRSR_DECRYPTOK for RX_FLAG_DECRYPTED.
staging: vt6656: Use vnt_rx_tail struct for tail variables.
...
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We want the staging fixes in here as well
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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git://git.kernel.org/pub/scm/linux/kernel/git/jic23/iio into staging-next
Jonathan writes:
Second set of new device support, features and minor fixes for IIO in the 5.6 cycle
Just a small set this time.
As we are very near the merge window, I've rolled a few fixes in here
rather than adding noise just before release. A short delay here will
do little harm.
New device support
* adis16480
- Add support for adis16490. After earlier rework this is simple ID plus
chip info.
Features
* kxcjk1013
- mount matrix support.
* lsm_6dsx
- mount matrix support.
Cleanups / minor or late breaking fixes
* ad7124
- add support to ad-sigma-delta and use it in this driver to allow
the the interrupt type to be IRQF_TRIGGER_LOW unlike most other devices
using this framework.
* adis
- use delay structure now available in SPI to handle transfer delays
- introduce a timeouts structure to allow support of new devices
* ak8975
- drop platform data support. No one is using it and it adds complexity.
- use device_get_match_data rather than open coding much the same thing.
* dht11
- drop meaningless todo
* at91-samad2_adc
- switch to dma_request_chan
* altas-sensor
- add a helper function to compute number of channels. Needed for new device
support that is under review.
* bma400
- add a lower bound check on scale.
* inv_mpu6050
- add support for temperature data in the fifos for all chips.
- support an odd situation where a board supports only interrupt triggering
on both edges.
* st_lsm6dsx
- check and handle potential error return.
* st_sensors
- fix some values for the LSM9DS0 which is ever so slightly different from
other devices using the same whoami value.
- switch over to generic functions from dt ones, avoiding need for separate
ACPI support.
* stm32-adc
- switch to dma_request_chan
- suppress an error print in deferred probe case.
* stm32-dac
- drop private data structure element for reset controller as only used in
probe.
- reflect more cleanly that the reset controller is optional whilst ensuring
that if is specified any errors are caught.
* stm32-dfsdm
- switch to dma_request_chan
- fix missing application of formatting to single conversions.
- ensure the sampling rate is updated when the oversampling ratio is changed.
* tag 'iio-for-5.6b' of git://git.kernel.org/pub/scm/linux/kernel/git/jic23/iio: (29 commits)
iio: dac: stm32-dac: better handle reset controller failures
iio: dac: stm32-dac: use reset controller only at probe time
dt-bindings: iio: accel: kxcjk1013: Document mount-matrix property
iio: accel: kxcjk1013: Support orientation matrix
iio: imu: st_lsm6dsx: add mount matrix support
iio: adc: stm32-adc: don't print an error on probe deferral
dt-bindings: iio: adis16480: add compatible entry for ADIS16490
iio: imu: adis16480: Add support for ADIS16490
iio: accel: bma400: prevent setting accel scale too low
iio: imu/mpu6050: support dual-edge IRQ
iio: imu: inv_mpu6050: add fifo temperature data support
iio: magnetometer: ak8975: Convert to use device_get_match_data()
iio: magnetometer: ak8975: Get rid of platform data
iio: adc: ad7124: Set IRQ type to falling
iio: adc: ad-sigma-delta: Allow custom IRQ flags
iio: imu: adis: use new `delay` structure for SPI transfer delays
iio: adc: stm32-dfsdm: adapt sampling rate to oversampling ratio
iio: adc: stm32-dfsdm: fix single conversion
iio: st_sensors: Make use of device properties
iio: st_sensors: Drop redundant parameter from st_sensors_of_name_probe()
...
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Hardware could be physically mounted in any possible direction and
userpspace needs to be aware of the mounting orientation in order to
process sensor's data correctly. In particular this helps iio-sensor-proxy
to report display's orientation properly on a phone/tablet devices.
Signed-off-by: Dmitry Osipenko <digetx@gmail.com>
Acked-by: Srinivas Pandruvada <srinivas.pandruvada@linux.intel.com>
Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
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Since IIO framework supports device property API and driver has been moved
already to the use of GPIO descriptors the logical continuation is to
get rid of platform data completely. We are on the safe side here since
there are no users of it in the kernel.
Signed-off-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
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Before this patch the ad_sigma_delta implementation hardcoded
the irq trigger type to low, assuming that all Sigma-Delta ADCs
have the same interrupt-type.
This patch allows all drivers using the ad_sigma_delta layer to set the
irq trigger type to the one specified in the datasheet.
Signed-off-by: Alexandru Tachici <alexandru.tachici@analog.com>
Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
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Since we have access to the struct device_driver and thus to the ID table,
there is no need to supply special parameters to st_sensors_of_name_probe().
Besides that we have a common API to get driver match data, there is
no need to do matching separately for OF and ACPI.
Taking into consideration above, simplify the ST sensors code.
Signed-off-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
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All timeouts are now handled by a dedicated timeout struct. This
variable is no longer needed.
Signed-off-by: Nuno Sá <nuno.sa@analog.com>
Signed-off-by: Alexandru Ardelean <alexandru.ardelean@analog.com>
Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
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The adis library only allows to define a `startup_delay` which for some
devices is enough. However, other devices define different timeouts with
significantly different timings which could lead to devices to not wait
enough time or to wait a lot more than necessary (which is not
efficient). This patch introduces a new timeout struct that must be
passed into `adis_init()`. There are mainly, for now, three timeouts
used. This is also an introductory patch with the goal of refactoring
`adis_initial_startup()`. New driver's (eg: adis16480, adis16460) are
replicating code for the device initial setup. With some changes (being
this the first one) we can pass this to `adis_initial_startup()`.
Signed-off-by: Nuno Sá <nuno.sa@analog.com>
Signed-off-by: Alexandru Ardelean <alexandru.ardelean@analog.com>
Signed-off-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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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 5.6 cycle
New device support
* ad7091r5 ADC
- New driver with follow up patch adding scale and vref support.
- DT bindings
* ad7923
- Support for ad7908, ad7918 and ad7928 added to driver.
* bma180
- Support the BMA254 accelerometer. Required fairly substantial rework
to allow for small differences between this an existing parts.
* bma400 accelerometer
- New driver with follow up patch for regulator support.
- DT bindings.
* asc dlhl60d
- New driver support this range of pressure and temperature sensors.
- DT bindings.
* ltc2496 ADC
- New driver to support this ADC.
- Split the existing LTC2497 driver generic component out and reuse.
- DT bindings.
* parallax ping
- New driver supporting ultrasonic and laser tof distance sensors.
- Bindings for these sensors.
New features
* core
- New char type for read_raw returns, used for thermocouple types.
- Rename read_first_n callback to read. The reasons behind the original
naming are lost to the mists of time.
* ad799x
- Allow pm_ops to disable device completely allowing regulator power down.
* bma180
- Enable basic regulator support.
* dmaengine buffer
- Report platform data alignment requirements via new ABI.
* max31856
- Add option to set mains filter rejection frequency and document
new in_temp_filter_notch_center_frequency ABI.
- Add support for configuring HW averaging (oversampling ratio)
- Add runtime configuration of thermocouple type and document new ABI.
* maxim-thermocouple
- Add read only access to thermocouple type using new ABI, includes
adding more specific compatibles to reflect which variant of the
chip is being used.
* mpu6050
- Provide option to support the PMU9150 in package magnetometer directly
rather than via auxiliary bus.
* stm32_adc
- Add overrun interrupt checks to detect if this happens.
* st_lsm6dsx
- Enable the sensor-hub support for lsm6dsm. Includes various reworks to
allow this.
Cleanups and minor fixes
* Subsystem wide
- Tidy up indentation in Kconfig and fix alphabetical order of AD7091R5.
- Drop linux/gpio.h and linux/of_gpio.h from drivers that don't use them.
* ad7266
- Convert to GPIO descriptors.
* ad7303
- Avoid a dance with checking if the regulator is supplied by just
using the optional request interface.
* ad7887
- Simplify channel specification assignment to enable adding more devices.
* ad7923
- Drop some unused and largely pointless defines of BOB_N==N variety.
- Tidy up checkpatch warnings.
- Add missing of_device_id table.
* adf4350
- Convert to GPIO descriptors.
* ak8975
- Convert to GPIO descriptors.
* ADIS library and drivers
- Expand scope of txrx_lock to cover all state and rename as state_lock
- Add unlocked read / write to allow grouping of consecutive calls under
single lock / unlock.
- Add unlocked check_status, reset to allow grouping under single
lock / unlock.
- Remove remaining uses of core mlock for local state protection.
mlock should never be used directly as it protects tightly defined
core IIO device management state.
* adis16240
- Enforce only supported SPI mode on driver load + add DT binding doc.
* atlas-ph-sensor
- Rename to atlas-sensor given it now covers things beyond ph sensors.
* bma180
- Use local dev variable to tidy up code.
- Use c99 style explicity .member assignment to make driver more readable.
* bmp280
- Drop ACPI support. No evidence this was used and appropriate ID is not
registered.
- Allow ACPI to bind device via PRP0001
* dmaengine buffer
- Use dma_request_chan instead of dma_request_slave_channel_reason as that
ABI is going away.
- Add module info to avoid tainting the kernel.
* hts221
- Avoid magic number defines when only used to fill structure elements
that are self describing.
* lm3533
- Drop a stray semicolon.
* max9611
- Cleanup enum handling to be more resilient to future changes.
* mpu6050
- Delete MPU9150 from supported SPI devices as doesn't provide SPI.
- Select I2C_MUX again after kbuild issue fixed elsewhere.
* stm32-timer
- Drop an unnecessary register update.
* ssp_sensors
- Convert to GPIO descriptors.
* st_sensors
- drop !CONFIG_ACPI defines as ACPI_PTR() will stop them being used
anyway.
- Make default platform data structures __maybe_unsued.
- Fill in some missing kernel-doc function parameters.
* st_lsm6dsx
- white space fixes.
- Mark some constants that aren't always used as __maybe_unused.
- Drop of ID table guards as they just pervent use under ACPI.
- Switch to device properties to allow ACPI usage.
* st_uvis25
- Drop acpi.h include as no ACPI APIs used.
* ti-ads1015
- Drop legacy platform data as no one seems to be using it.
- Use the device property API instead of OF specific.
* ti-ads7950
- typo fix in error message.
* tag 'iio-for-5.6a' of git://git.kernel.org/pub/scm/linux/kernel/git/jic23/iio: (99 commits)
iio: accel: bma180: BMA254 support
iio: pressure: bmp280: Allow device to be enumerated from ACPI
iio: pressure: bmp280: Drop ACPI support
dt-bindings: iio: adc: convert sd modulator to json-schema
iio: buffer: rename 'read_first_n' callback to 'read'
iio: buffer-dmaengine: Report buffer length requirements
bindings: iio: pressure: Add documentation for dlh driver
dt-bindings: Add asc vendor
iio: pressure: Add driver for DLH pressure sensors
iio: buffer-dmaengine: Add module information
iio: accel: bma180: Use explicit member assignment
iio: accel: bma180: Basic regulator support
iio: accel: bma180: Add dev helper variable
iio: imu: st_lsm6dsx: enable sensor-hub support for lsm6dsm
iio: imu: st_lsm6dsx: rename st_lsm6dsx_shub_read_reg in st_lsm6dsx_shub_read_output
iio: imu: st_lsm6dsx: check if shub_output reg is located in primary page
iio: imu: st_lsm6dsx: check if pull_up is located in primary page
iio: imu: st_lsm6dsx: check if master_enable is located in primary page
iio: imu: st_lsm6dsx: export max num of slave devices in st_lsm6dsx_shub_settings
iio: light: remove unneeded semicolon
...
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It is implied that 'read' will read the first n bytes and not e.g. bytes
only from offsets within the buffer that are a prime number.
This change is non-functional, mostly just a rename.
A secondary intent with this patch is to make room later to add a write
callback.
Signed-off-by: Lars-Peter Clausen <lars@metafoo.de>
Signed-off-by: Alexandru Ardelean <alexandru.ardelean@analog.com>
Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
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Platform data is a legacy interface to supply device properties
to the driver. In this case we even don't have in-kernel users
for it. Just remove it for good.
Signed-off-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
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The AD7266 have no in-tree users making use of the platform
data mechanism to pass address GPIO lines when not using
a fixed address, so we can easily convert this to use
GPIO descriptors instead of the platform data integers
currently passed.
Lowercase the labels "ad0".."ad2" as this will make a better
fit for platform descriptions like device tree that prefer
lowercase names such as "ad0-gpios" rather than "AD0-gpios".
Board files and other static users of this device can pass
the same GPIO descriptors using machine descriptor
tables if need be.
Cc: Alison Schofield <amsfield22@gmail.com>
Cc: Lars-Peter Clausen <lars@metafoo.de>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
Reviewed-by: Alexandru Ardelean <alexandru.ardelean@analog.com>
Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
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The lock detect GPIO line is better to grab using
a GPIO descriptor. We drop the pdata for this: clients using board
files can use machine descriptor tables to pass this GPIO from
static data.
Cc: Michael Hennerich <michael.hennerich@analog.com>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
Reviewed-by: Alexandru Ardelean <alexandru.ardelean@analog.com>
Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
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The end-of-conversion (EOC) GPIO line is better to grab using
a GPIO descriptor. We drop the pdata for this: clients using board
files can use machine descriptor tables to pass this GPIO from
static data.
Cc: Stephan Gerhold <stephan@gerhold.net>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
Reviewed-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
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We have a couple of thermocouple IIO drivers, supporting several chips.
Some of them support only one specific thermocouple type (e.g. "K", "J"),
one of them can be configured to work with several different thermocouple
types.
In certain applications thermocouples could be externally connected to the
chip by the user.
This patch introduces a new IIO standard attribute to report the supported
thermocouple type and, where applicable, to allow it to be dynamically set
using sysfs.
Cc: Hartmut Knaack <knaack.h@gmx.de>
Cc: Lars-Peter Clausen <lars@metafoo.de>
Cc: Peter Meerwald-Stadler <pmeerw@pmeerw.net>
Cc: Colin Ian King <colin.king@canonical.com>
Cc: Patrick Havelange <patrick.havelange@essensium.com>
Cc: Matt Weber <matthew.weber@rockwellcollins.com>
Cc: Matt Ranostay <matt.ranostay@konsulko.com>
Cc: Chuhong Yuan <hslester96@gmail.com>
Cc: Daniel Gomez <dagmcr@gmail.com>
Cc: linux-iio@vger.kernel.org
Signed-off-by: Andrea Merello <andrea.merello@gmail.com>
Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
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This patch introduces IIO_VAL_CHAR type for standard IIO attributes to
allow for attributes that needs to be represented by character rather
than a number. This is preparatory for introducing a new attribute whose
purpose is to describe thermocouple type, that can be i.e. "J", "K", etc..
The char-type value is stored in the first "value" integer that is passed
to the .[read/write]_raw() callbacks.
Note that in order to make it possible for the IIO core to correctly parse
this type (actually, to avoid integer parsing), it became mandatory for
any driver that wish to use IIO_VAL_CHAR on a writable attribute to
implement .write_raw_get_fmt().
Cc: Hartmut Knaack <knaack.h@gmx.de>
Cc: Lars-Peter Clausen <lars@metafoo.de>
Cc: Peter Meerwald-Stadler <pmeerw@pmeerw.net>
Cc: Colin Ian King <colin.king@canonical.com>
Cc: Patrick Havelange <patrick.havelange@essensium.com>
Cc: Matt Weber <matthew.weber@rockwellcollins.com>
Cc: Matt Ranostay <matt.ranostay@konsulko.com>
Cc: Chuhong Yuan <hslester96@gmail.com>
Cc: Daniel Gomez <dagmcr@gmail.com>
Cc: linux-iio@vger.kernel.org
Signed-off-by: Andrea Merello <andrea.merello@gmail.com>
Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
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The reset routine may also be important to be protected by the state-lock
and grouped with other operations, so create an unlocked version, so that
this can be done.
Signed-off-by: Alexandru Ardelean <alexandru.ardelean@analog.com>
Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
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This one also gets re-used in certain operations, so it makes sense to
have an unlocked version of this to group it with other
reads/writes/operations to have a single lock for the whole state change.
Signed-off-by: Alexandru Ardelean <alexandru.ardelean@analog.com>
Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
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This will allow more flexible control to group reads & writes into a single
lock (particularly the state_lock).
The end-goal is to remove the indio_dev->mlock usage, and the simplest fix
would have been to just add another lock, which would not be a good idea on
the long-run.
Signed-off-by: Alexandru Ardelean <alexandru.ardelean@analog.com>
Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
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The lock can be extended a bit to protect other elements that are not
particular to just TX/RX. Another idea would have been to just add a new
`state_lock`, but that would mean 2 locks which would be redundant, and
probably cause more potential for dead-locks.
What will be done in the next patches, will be to add some unlocked
versions for read/write_reg functions.
Signed-off-by: Alexandru Ardelean <alexandru.ardelean@analog.com>
Signed-off-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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We want the staging driver fixes in here, and this resolves merge issues
with the isdn code that was pointed out in linux-next
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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The staging isdn drivers are gone, and CONFIG_BT_CMTP is now
the only user. This means a lot of the code in the subsystem
has no remaining callers and can be removed.
Change the capi user space front-end to be part of kernelcapi,
and the combined module to only be compiled if BT_CMTP is
also enabled, then remove the interfaces that have no remaining
callers.
As the notifier list and the capi_drivers list have no callers
outside of kcapi.c, the implementation gets much simpler.
Some definitions from the include/linux/*.h headers are only
needed internally and are moved to kcapi.h.
Acked-by: David Miller <davem@davemloft.net>
Signed-off-by: Arnd Bergmann <arnd@arndb.de>
Link: https://lore.kernel.org/r/20191210210455.3475361-2-arnd@arndb.de
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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As described in drivers/staging/isdn/TODO, the drivers are all
assumed to be unmaintained and unused now, with gigaset being the
last one to stop being maintained after Paul Bolle lost access
to an ISDN network.
The CAPI subsystem remains for now, as it is still required by
bluetooth/cmtp.
Signed-off-by: Arnd Bergmann <arnd@arndb.de>
Link: https://lore.kernel.org/r/20191210210455.3475361-1-arnd@arndb.de
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/tty
Pull tty/serial driver updates from Greg KH:
"Here are the big set of tty and serial driver updates for 5.6-rc1
Included in here are:
- dummy_con cleanups (touches lots of arch code)
- sysrq logic cleanups (touches lots of serial drivers)
- samsung driver fixes (wasn't really being built)
- conmakeshash move to tty subdir out of scripts
- lots of small tty/serial driver updates
All of these have been in linux-next for a while with no reported
issues"
* tag 'tty-5.6-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/tty: (140 commits)
tty: n_hdlc: Use flexible-array member and struct_size() helper
tty: baudrate: SPARC supports few more baud rates
tty: baudrate: Synchronise baud_table[] and baud_bits[]
tty: serial: meson_uart: Add support for kernel debugger
serial: imx: fix a race condition in receive path
serial: 8250_bcm2835aux: Document struct bcm2835aux_data
serial: 8250_bcm2835aux: Use generic remapping code
serial: 8250_bcm2835aux: Allocate uart_8250_port on stack
serial: 8250_bcm2835aux: Suppress register_port error on -EPROBE_DEFER
serial: 8250_bcm2835aux: Suppress clk_get error on -EPROBE_DEFER
serial: 8250_bcm2835aux: Fix line mismatch on driver unbind
serial_core: Remove unused member in uart_port
vt: Correct comment documenting do_take_over_console()
vt: Delete comment referencing non-existent unbind_con_driver()
arch/xtensa/setup: Drop dummy_con initialization
arch/x86/setup: Drop dummy_con initialization
arch/unicore32/setup: Drop dummy_con initialization
arch/sparc/setup: Drop dummy_con initialization
arch/sh/setup: Drop dummy_con initialization
arch/s390/setup: Drop dummy_con initialization
...
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It should remove the align-padding before @name.
[yes, there's a "hole" in the structure now, but that's fine, no one
cares. If they do care, the whole thing should be restructured using
pahole to find a better ordering. Removing this field is good as some
drivers have been known to abuse it for other things when they shouldn't
have been doing that. -- gregkh]
Signed-off-by: Dmitry Safonov <dima@arista.com>
Link: https://lore.kernel.org/r/20200114171912.261787-4-dima@arista.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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We need the serial/tty fixes in here as well.
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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It's not worth to have them in every serial driver and I'm about to add
another helper function.
Signed-off-by: Dmitry Safonov <dima@arista.com>
Link: https://lore.kernel.org/r/20200109215444.95995-2-dima@arista.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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We need the tty/serial fixes in here as well.
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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No one defines it anymore.
Signed-off-by: Dmitry Safonov <dima@arista.com>
Link: https://lore.kernel.org/r/20191213000657.931618-55-dima@arista.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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The SUPPORT_SYSRQ ifdeffery is not nice as:
- May create misunderstanding about sizeof(struct uart_port) between
different objects
- Prevents moving functions from serial_core.h
- Reduces readability (well, it's ifdeffery - it's hard to follow)
In order to remove SUPPORT_SYSRQ, has_sysrq variable has been added.
Initialise it in driver's probe and remove ifdeffery.
In contrast to 8250/8250_of, legacy_serial on powerpc does fill
(struct plat_serial8250_port). The reason is likely that it's done on
device_initcall(), not on probe. So, 8250_core is not yet probed.
Propagate value from platform_device on 8250 probe - in case powepc
legacy driver it's initialized on initcall, in case 8250_of it will be
initialized later on of_platform_serial_setup().
Cc: Benjamin Herrenschmidt <benh@kernel.crashing.org>
Cc: Paul Mackerras <paulus@samba.org>
Cc: Michael Ellerman <mpe@ellerman.id.au>
Cc: linuxppc-dev@lists.ozlabs.org
Signed-off-by: Dmitry Safonov <dima@arista.com>
Link: https://lore.kernel.org/r/20191213000657.931618-6-dima@arista.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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The SUPPORT_SYSRQ is messy: every .c source should define it before
including "serial_core.h" if sysrq is supported or struct uart_port will
differ in sizes. Also this prevents moving to serial_core.c functions:
uart_handle_sysrq_char(), uart_prepare_sysrq_char(),
uart_unlock_and_check_sysrq().
It doesn't save many bytes in the structure, and a better way to reduce
it's size would be making rs485 and iso7816 pointers.
Introduce `has_sysrq` member to be used by serial line drivers further.
Signed-off-by: Dmitry Safonov <dima@arista.com>
Link: https://lore.kernel.org/r/20191213000657.931618-4-dima@arista.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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At the current place members those follow are:
: upf_t flags;
: upstat_t status;
: int hw_stopped;
: unsigned int mctrl;
: unsigned int timeout;
: unsigned int type;
: const struct uart_ops *ops;
Together, they give (*ops) 8-byte align on 64-bit platforms.
And `sysrq_ch` introduces 4-byte padding.
On the other side, above:
: struct device *dev;
: unsigned char hub6;
: unsigned char suspended;
: unsigned char unused[2];
: const char *name;
Adds another 4-byte padding.
Moving sysrq members just before `hub6` allows to save 8 bytes
per-uart_port on 64-bit platforms:
On my gcc, x86_64 sizeof(struct uart_port) goes from 528 to 520.
Signed-off-by: Dmitry Safonov <dima@arista.com>
Link: https://lore.kernel.org/r/20191213000657.931618-3-dima@arista.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/usb
Pull USB/Thunderbolt/PHY driver updates from Greg KH:
"Here is the big USB and Thunderbolt and PHY driver updates for
5.6-rc1.
With the advent of USB4, "Thunderbolt" has really become USB4, so the
renaming of the Kconfig option and starting to share subsystem code
has begun, hence both subsystems coming in through the same tree here.
PHY driver updates also touched USB drivers, so that is coming in
through here as well.
Major stuff included in here are:
- USB 4 initial support added (i.e. Thunderbolt)
- musb driver updates
- USB gadget driver updates
- PHY driver updates
- USB PHY driver updates
- lots of USB serial stuff fixed up
- USB typec updates
- USB-IP fixes
- lots of other smaller USB driver updates
All of these have been in linux-next for a while now (the usb-serial
tree is already tested in linux-next on its own before merged into
here), with no reported issues"
[ Removed an incorrect compile test enablement for PHY_EXYNOS5250_SATA
that causes configuration warnings - Linus ]
* tag 'usb-5.6-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/usb: (207 commits)
Doc: ABI: add usb charger uevent
usb: phy: show USB charger type for user
usb: cdns3: fix spelling mistake and rework grammar in text
usb: phy: phy-gpio-vbus-usb: Convert to GPIO descriptors
USB: serial: cyberjack: fix spelling mistake "To" -> "Too"
USB: serial: ir-usb: simplify endpoint check
USB: serial: ir-usb: make set_termios synchronous
USB: serial: ir-usb: fix IrLAP framing
USB: serial: ir-usb: fix link-speed handling
USB: serial: ir-usb: add missing endpoint sanity check
usb: typec: fusb302: fix "op-sink-microwatt" default that was in mW
usb: typec: wcove: fix "op-sink-microwatt" default that was in mW
usb: dwc3: pci: add ID for the Intel Comet Lake -V variant
usb: typec: tcpci: mask event interrupts when remove driver
usb: host: xhci-tegra: set MODULE_FIRMWARE for tegra186
usb: chipidea: add inline for ci_hdrc_host_driver_init if host is not defined
usb: chipidea: handle single role for usb role class
usb: musb: fix spelling mistake: "periperal" -> "peripheral"
phy: ti: j721e-wiz: Fix build error without CONFIG_OF_ADDRESS
USB: usbfs: Always unlink URBs in reverse order
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https://git.kernel.org/pub/scm/linux/kernel/git/johan/usb-serial into usb-next
Johan writes:
Here are the USB-serial updates for 5.6-rc1, including:
- a missing ir-usb endpoint sanity check
- fixes for two long-standing regressions in ir-usb
- opticon chars_in_buffer support
Included are also various clean ups.
All have been in linux-next with no reported issues.
Signed-off-by: Johan Hovold <johan@kernel.org>
* tag 'usb-serial-5.6-rc1' of https://git.kernel.org/pub/scm/linux/kernel/git/johan/usb-serial:
USB: serial: cyberjack: fix spelling mistake "To" -> "Too"
USB: serial: ir-usb: simplify endpoint check
USB: serial: ir-usb: make set_termios synchronous
USB: serial: ir-usb: fix IrLAP framing
USB: serial: ir-usb: fix link-speed handling
USB: serial: ir-usb: add missing endpoint sanity check
USB: serial: garmin_gps: Use flexible-array member
USB: serial: opticon: stop all I/O on close()
USB: serial: opticon: add chars_in_buffer() implementation
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Commit e0d795e4f36c ("usb: irda: cleanup on ir-usb module") added a USB
IrDA header with common defines, but mistakingly switched to using the
class-descriptor baud-rate bitmask values for the outbound header.
This broke link-speed handling for rates above 9600 baud, but a device
would also be able to operate at the default 9600 baud until a
link-speed request was issued (e.g. using the TCGETS ioctl).
Fixes: e0d795e4f36c ("usb: irda: cleanup on ir-usb module")
Cc: stable <stable@vger.kernel.org> # 2.6.27
Cc: Felipe Balbi <balbi@kernel.org>
Reviewed-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Signed-off-by: Johan Hovold <johan@kernel.org>
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Instead of using the legacy GPIO API and keeping track on
polarity inversion semantics in the driver, switch to use
GPIO descriptors for this driver and change all consumers
in the process.
This makes it possible to retire platform data completely:
the only remaining platform data member was "wakeup" which
was intended to make the vbus interrupt wakeup capable,
but was not set by any users and thus remained unused. VBUS
was not waking any devices up. Leave a comment about it so
later developers using the platform can consider setting it
to always enabled so plugging in USB wakes up the platform.
Cc: Daniel Mack <daniel@zonque.org>
Cc: Haojian Zhuang <haojian.zhuang@gmail.com>
Acked-by: Robert Jarzmik <robert.jarzmik@free.fr>
Acked-by: Felipe Balbi <balbi@kernel.org>
Acked-by: Sylwester Nawrocki <snawrocki@kernel.org>
Acked-by: Philipp Zabel <p.zabel@pengutronix.de>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
Link: https://lore.kernel.org/r/20200123155013.93249-1-linus.walleij@linaro.org
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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We need the USB fixes in here as well.
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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git://git.kernel.org/pub/scm/linux/kernel/git/kishon/linux-phy into usb-next
Kishon writes:
phy: for 5.6
*) Add support in PHY core to create link between PHY consumer and PHY
provider
*) Add DisplayPort PHY configuration set to be used for negotiating the
configurations to be used between DisplayPort controller and
DisplayPort PHY
*) Add PHY wrapper driver (configure inputs to Cadence Sierra PHY) for
TI's J721E SoC and adapt Cadence Sierra PHY driver to be used for
J721E SoC (Supports USB and PCIe)
*) Add PHY driver for eMMC PHY in Intel LGM SoC
*) Add PHY support for 7216 and 7211 Broadcom SoCs which uses the new
Synopsys USB Controller
*) Add support for 16nm SATA PHY present in Broadcom 7216 SoC
*) Fix lost packet issue, fix MDIO from getting inaccessible, fix
occasional transaction failures, fix USB driver from crashing in
Broadcom USB PHY driver
*) Fix missing PCS SW reset in UFS PHY of Qualcomm SM8150
*) Use "struct phy_configure_opts_mipi_dphy" to pass parameters from
display controller to rockchip-inno-dsidphy
*) Other cleanups including compile testing for some of the PHY drivers,
fixing Kconfig indentation, duplicate writes in drivers etc.,
Signed-off-by: Kishon Vijay Abraham I <kishon@ti.com>
* tag 'phy-for-5.6_v2' of git://git.kernel.org/pub/scm/linux/kernel/git/kishon/linux-phy: (54 commits)
dt-bindings: phy: Add PHY_TYPE_DP definition
phy: ti: j721e-wiz: Fix return value check in wiz_probe()
dt-bindings: usb: Convert Allwinner A80 USB PHY controller to a schema
phy: intel-lgm-emmc: Fix warning by adding missing MODULE_LICENSE
phy: ti: j721e-wiz: Manage typec-gpio-dir
dt-bindings: phy: ti,phy-j721e-wiz: Add Type-C dir GPIO
phy: cadence: Sierra: add phy_reset hook
phy: cadence: Sierra: remove redundant initialization of pointer regmap
phy: Add DisplayPort configuration options
phy: Enable compile testing for some of drivers
phy: mediatek: Fix Kconfig indentation
phy: intel-lgm-emmc: Add support for eMMC PHY
dt-bindings: phy: intel-emmc-phy: Add YAML schema for LGM eMMC PHY
phy: ti: j721e-wiz: Add support for WIZ module present in TI J721E SoC
dt-bindings: phy: Document WIZ (SERDES wrapper) bindings
phy: cadence: Sierra: Use correct dev pointer in cdns_sierra_phy_remove()
phy: cadence: Sierra: Set cmn_refclk_dig_div/cmn_refclk1_dig_div frequency to 25MHz
phy: cadence: Sierra: Change MAX_LANES of Sierra to 16
phy: cadence: Sierra: Check for PLL lock during PHY power on
phy: cadence: Sierra: Get reset control "array" for each link
...
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Add definition for DisplayPort phy type.
Signed-off-by: Jyri Sarha <jsarha@ti.com>
Reviewed-by: Roger Quadros <rogerq@ti.com>
Reviewed-by: Kishon Vijay Abraham I <kishon@ti.com>
Signed-off-by: Kishon Vijay Abraham I <kishon@ti.com>
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Allow DisplayPort PHYs to be configured through the generic
functions through a custom structure added to the generic union.
The configuration structure is used for reconfiguration of
DisplayPort PHYs during link training operation.
The parameters added here are the ones defined in the DisplayPort
spec v1.4 which include link rate, number of lanes, voltage swing
and pre-emphasis.
Add the DisplayPort phy mode to the generic phy_mode enum.
Signed-off-by: Yuti Amonkar <yamonkar@cadence.com>
Reviewed-by: Maxime Ripard <mripard@kernel.org>
Reviewed-by: Jyri Sarha <jsarha@ti.com>
Signed-off-by: Kishon Vijay Abraham I <kishon@ti.com>
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In order to enforce suspend/resume ordering, this commit creates link
between phy consumers and phy devices. This link avoids to suspend phy
before phy consumers.
Signed-off-by: Alexandre Torgue <alexandre.torgue@st.com>
[jonathanh@nvidia.com: Fix an abort when of_phy_get() returns error]
Signed-off-by: Jonathan Hunter <jonathanh@nvidia.com>
Signed-off-by: Kishon Vijay Abraham I <kishon@ti.com>
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