STM32 ADC has external timer trigger sources. Use stm32 timer triggers
API (e.g. is_stm32_timer_trigger()) with local ADC lookup table to
validate a trigger can be used.
This also provides correct trigger selection value (e.g. extsel).
Signed-off-by: NFabrice Gasnier <fabrice.gasnier@st.com>
Signed-off-by: NJonathan Cameron <jic23@kernel.org>

STM32 ADC conversions can be launched using hardware triggers.
It can be used to start conversion sequences (group of channels).
Selected channels are select via sequence registers.
Trigger source is selected via 'extsel' (external trigger mux).
Trigger polarity is set to rising edge by default.
Signed-off-by: NFabrice Gasnier <fabrice.gasnier@st.com>
Signed-off-by: NJonathan Cameron <jic23@kernel.org>

This is the IIO driver for devantech srf08 ultrasonic ranger which can be
used to measure the distances to an object.

The sensor supports I2C with some registers.

Supported Features include:
 - read the distance in ranging mode in centimeters
 - output of the driver is directly the read value
 - together with the scale the driver delivers the distance in meters
 - only the first echo of the nearest object is delivered
 - set sensitivity as analog value in the range of 0-31  means setting
   gain register on device
 - set range registers; userspace enters max. range in millimeters in
   43 mm steps

Features not supported by this driver:
 - ranging mode in inches or in microseconds
 - ANN mode
 - change I2C address through this driver
 - light sensor

The driver was added in the directory "proximity" of the iio subsystem and
the menu in den config is now called "Proximity and distance sensors"
Signed-off-by: NAndreas Klinger <ak@it-klinger.de>
Signed-off-by: NJonathan Cameron <jic23@kernel.org>

Handle the barometer sensor presented by the ChromeOS EC Sensor hub.
Signed-off-by: NGwendal Grignou <gwendal@chromium.org>
Signed-off-by: NEnric Balletbo Serra <enric.balletbo@collabora.com>
Signed-off-by: NJonathan Cameron <jic23@kernel.org>

The devm_ resource manager functions allow memory to be automatically
released when a device is unbound. This patch takes advantage of the
resource manager functions and replaces the gpiochip_add_data call and
iio_device_register call with the devm_gpiochip_add_data call and
devm_iio_device_register call respectively. In addition, the
stx104_remove function has been removed as no longer necessary due to
the use of the relevant devm_ resource manager functions.
Signed-off-by: NWilliam Breathitt Gray <vilhelm.gray@gmail.com>
Signed-off-by: NJonathan Cameron <jic23@kernel.org>

Add capability to route data ready signal on pin 1 or pin 2 of the package
Signed-off-by: NLorenzo Bianconi <lorenzo.bianconi@st.com>
Signed-off-by: NJonathan Cameron <jic23@kernel.org>

This adds support for the SAR (Successive Approximation Register) ADC
on the Amlogic Meson SoCs.

The code is based on the public S805 (Meson8b) and S905 (GXBB)
datasheets (see [0] and [1]), as well as by reading (various versions
of) the vendor driver and by inspecting the registers on the vendor
kernels of my testing-hardware.

Currently the GXBB, GXL and GXM SoCs are supported. GXBB hardware has
10-bit ADC resolution, while GXL and GXM have 12-bit ADC resolution.
The code was written to support older SoCs (Meson8 and Meson8b) as well,
but due to lack of actual testing-hardware no of_device_id was added for
these.

Two "features" from the vendor driver are currently missing:
- the vendor driver uses channel #7 for calibration (this improves the
  accuracy of the results - in my tests the results were less than 3%
  off without calibration compared to the vendor driver). Adding support
  for this should be easy, but is not required for most applications.
- channel #6 is connected to the SoCs internal temperature sensor.
  Adding support for this is probably not so easy since (based on the
  u-boot sources) most SoC versions are using different registers and
  algorithms for the conversion from "ADC value" to temperature.

Supported by the hardware but currently not supported by the driver:
- reading multiple channels at the same time (the hardware has a FIFO
  buffer which stores multiple results)
- continuous sampling (this would require a way to enable this
  individually because otherwise the ADC would be drawing power
  constantly)
- interrupt support (similar to the vendor driver this new driver is
  polling the results. It is unclear if the IRQ-mode is supported on
  older (Meson6 or Meson8) hardware as well or if there are any errata)

[0]
http://dn.odroid.com/S805/Datasheet/S805_Datasheet%20V0.8%2020150126.pdf
[1] http://dn.odroid.com/S905/DataSheet/S905_Public_Datasheet_V1.1.4.pdfSigned-off-by: NMartin Blumenstingl <martin.blumenstingl@googlemail.com>
Tested-by: NNeil Armstrong <narmstrong@baylibre.com>
Signed-off-by: NJonathan Cameron <jic23@kernel.org>

Octal permissions should be used instead of symbolic ones for easier
reading.
Signed-off-by: NJulián de Gortari <kiototeko@gmail.com>
Signed-off-by: NJonathan Cameron <jic23@kernel.org>

Align parameters to parentheses.
Signed-off-by: NAnthony Brandon <anthony@amarulasolutions.com>
Signed-off-by: NJonathan Cameron <jic23@kernel.org>

Use devm_iio_device_register() for IIO subsystem device
registration and delete the remove function since there
is no need after this change.
Signed-off-by: NWei Yongjun <weiyongjun1@huawei.com>
Signed-off-by: NJonathan Cameron <jic23@kernel.org>

Use devm_iio_device_register() for IIO subsystem device
registration and delete the remove function since there
is no need after this change.
Signed-off-by: NWei Yongjun <weiyongjun1@huawei.com>
Signed-off-by: NJonathan Cameron <jic23@kernel.org>

Add implementation for Maxim Integrated 5481, 5482, 5483,
and 5484 digital potentiometer devices.

Datasheet:
http://datasheets.maximintegrated.com/en/ds/MAX5481-MAX5484.pdfSigned-off-by: NMaury Anderson <maury.anderson@rockwellcollins.com>
Signed-off-by: NMatthew Weber <matthew.weber@rockwellcollins.com>
Signed-off-by: NSlawomir Stepien <sst@poczta.fm>
Acked-by: NRob Herring <robh@kernel.org>
Signed-off-by: NJonathan Cameron <jic23@kernel.org>

Add IIO driver for the Renesas RCar GyroADC block. This block is a
simple 4/8-channel ADC which samples 12/15/24 bits of data every
cycle from all channels.
Signed-off-by: NMarek Vasut <marek.vasut+renesas@gmail.com>
Cc: Geert Uytterhoeven <geert+renesas@glider.be>
Cc: Simon Horman <horms+renesas@verge.net.au>
Cc: Jonathan Cameron <jic23@kernel.org>
Cc: linux-renesas-soc@vger.kernel.org
Cc: Wolfram Sang <wsa@the-dreams.de>
Signed-off-by: NJonathan Cameron <jic23@kernel.org>

Replace a mix of tabs and spaces indentation by tabs only.

Errors were reported by checkpatch.pl as
WARNING: Statements should start on a tabstop
WARNING: suspect code indent for conditional statement
Signed-off-by: NMaxime Rossi Bellom <mrossibellom@gmail.com>
Signed-off-by: NGreg Kroah-Hartman <gregkh@linuxfoundation.org>

Convert leading spaces to tabs
Signed-off-by: NWilliam Blough <devel@blough.us>
Signed-off-by: NGreg Kroah-Hartman <gregkh@linuxfoundation.org>

This patch resolves the checkpatch issue:
multiple assignments should be avoided
Signed-off-by: Nsayli karnik <karniksayli1995@gmail.com>
Signed-off-by: NGreg Kroah-Hartman <gregkh@linuxfoundation.org>

Initial cleanup of bcm2835-audio driver for the
bcm2535(Raspberry PI)

Driver provides HDMI audio through ALSA and is built
on top of the vc04_services driver.

Original version of the driver is available at:
http://www.github.com/raspberry/linux

Driver compiles without any build errors or warnings.

Tested on a RPI 3 running in ARM64 mode with the
vlc player and alsautils.
Signed-off-by: NMichael Zoran <mzoran@crowfest.net>
Signed-off-by: NGreg Kroah-Hartman <gregkh@linuxfoundation.org>

Fields frag_size and playload_size of struct ieee80211_txb are encoded
as short little-endian. This patch adds conversions to / from cpu byte
order when copy / write these values in variables of architecture
independent byte order. It also avoid a sparse type warning.
Signed-off-by: NColin Vidal <colin@cvidal.org>
Signed-off-by: NGreg Kroah-Hartman <gregkh@linuxfoundation.org>

This patch fixes the checkpatch issue by adding space after ','.
Signed-off-by: Nsimran singhal <singhalsimran0@gmail.com>
Signed-off-by: NGreg Kroah-Hartman <gregkh@linuxfoundation.org>

This patch fixes the checkpatch issue by adding space around '='.
Signed-off-by: Nsimran singhal <singhalsimran0@gmail.com>
Signed-off-by: NGreg Kroah-Hartman <gregkh@linuxfoundation.org>

Fix multiple checkpatch.pl warnings:
function definition argument '...' should also have an identifier name
Signed-off-by: NSimon Sandström <simon@nikanor.nu>
Signed-off-by: NGreg Kroah-Hartman <gregkh@linuxfoundation.org>

Using octal permissions instead of symbolic ones is preferred.
Signed-off-by: NErnestas Kulik <ernestas.kulik@gmail.com>
Signed-off-by: NGreg Kroah-Hartman <gregkh@linuxfoundation.org>

Using octal permissions instead of symbolic ones is preferred.
Signed-off-by: NErnestas Kulik <ernestas.kulik@gmail.com>
Signed-off-by: NGreg Kroah-Hartman <gregkh@linuxfoundation.org>

The newly added function triggers a harmless warning:

drivers/staging/lustre/lustre/ptlrpc/pack_generic.c: In function 'lustre_shrink_msg':
drivers/staging/lustre/lustre/ptlrpc/pack_generic.c:472:1: error: control reaches end of non-void function [-Werror=return-type]

This probably happens because LASSERTF() contains an 'unlikely()' that
sometimes prevents gcc from analysing the control flow correctly.
Adding a return statement here seems harmless and lets us keep that
unlikely().

Fixes: 96049bd1 ("staging: lustre: ptlrpc: embed highest XID in each request")
Signed-off-by: NArnd Bergmann <arnd@arndb.de>
Signed-off-by: NGreg Kroah-Hartman <gregkh@linuxfoundation.org>

Replace symbolic permissions with their octect representation to fix
checkpatch warnings.
Signed-off-by: NSebastian Haas <sehaas@deebas.com>
Signed-off-by: NGreg Kroah-Hartman <gregkh@linuxfoundation.org>

Fix the following formatting issues:
CHECK: Alignment should match open parenthesis
Signed-off-by: NUmang Raghuvanshi <u@umangis.me>
Signed-off-by: NGreg Kroah-Hartman <gregkh@linuxfoundation.org>

The loopback driver allows the user to set a minimum delay of up to one
second to be inserted between test iterations (i.e. request
submissions). The delay is currently specified in microseconds and is
implemented using udelay.

Busy looping for long periods is not just anti-social; udelay must not
be used for delays longer than a few milliseconds due to the risk of
integer overflow.

Replace the broken udelay with a usleep_range with a 100 us range for
short delays (< 20 ms) and otherwise revert to using msleep.

Fixes: b36f04fa ("greybus: loopback: Convert thread delay to microseconds")
Signed-off-by: NJohan Hovold <johan@kernel.org>
Cc: stable <stable@vger.kernel.org> # 4.9+
Signed-off-by: NGreg Kroah-Hartman <gregkh@linuxfoundation.org>

It fixes the following issue reported by checkpatch.pl:
Prefer kernel type 'u32' over 'uint32_t'
Signed-off-by: NFranck Demathieu <fdemathieu@gmail.com>
Acked-by: NRui Miguel Silva <rmfrfs@gmail.com>
Acked-by: NViresh Kumar <viresh.kumar@linaro.org>
Signed-off-by: NGreg Kroah-Hartman <gregkh@linuxfoundation.org>

This driver does not have a low-latency mode and should not report
anything else.

Also drop the skip-test flag which isn't used either.
Signed-off-by: NJohan Hovold <johan@kernel.org>
Reviewed-by: NViresh Kumar <viresh.kumar@linaro.org>
Signed-off-by: NGreg Kroah-Hartman <gregkh@linuxfoundation.org>

Timers IPs can be used to generate triggers for other IPs like
DAC or ADC.
Each trigger may result of timer internals signals like counter enable,
reset or edge, this configuration could be done through "master_mode"
device attribute.

Since triggers could be used by DAC or ADC their names are defined
in include/ nux/iio/timer/stm32-timer-trigger.h and is_stm32_iio_timer_trigger
function could be used to check if the trigger is valid or not.

"trgo" trigger have a "sampling_frequency" attribute which allow to configure
timer sampling frequency.

version 8:
- change kernel version from 4.10 to 4.11 in ABI documentation

version 7:
- remove all iio_device related code
- move driver into trigger directory

version 5:
- simplify tables of triggers
- only create an IIO device when needed

version 4:
- get triggers configuration from "reg" in DT
- add tables of triggers
- sampling frequency is enable/disable when writing in trigger
  sampling_frequency attribute
- no more use of interruptions

version 3:
- change compatible to "st,stm32-timer-trigger"
- fix attributes access right
- use string instead of int for master_mode and slave_mode
- document device attributes in sysfs-bus-iio-timer-stm32

version 2:
- keep only one compatible
- use st,input-triggers-names and st,output-triggers-names
  to know which triggers are accepted and/or create by the device
Signed-off-by: NBenjamin Gaignard <benjamin.gaignard@st.com>
Acked-by: NJonathan Cameron <jic23@kernel.org>
Signed-off-by: NLee Jones <lee.jones@linaro.org>

This driver adds support for PWM driver on STM32 platform.
The SoC have multiple instances of the hardware IP and each
of them could have small differences: number of channels,
complementary output, auto reload register size...

version 9:
- fix commit message header
- remove one space MODULE_ALIAS

version 8:
- fix comments done by Thierry on version 7

version 6:
- change st,breakinput parameter to make it usuable for stm32f7 too.

version 4:
- detect at probe time hardware capabilities
- fix comments done on v2 and v3
- use PWM atomic ops

version 2:
- only keep one comptatible
- use DT parameters to discover hardware block configuration
Signed-off-by: NBenjamin Gaignard <benjamin.gaignard@st.com>
Acked-by: NThierry Reding <treding@nvidia.com>
Signed-off-by: NLee Jones <lee.jones@linaro.org>

Fix the following errors:
Use 4 digit octal (0777) not decimal permissions
Signed-off-by: NAbdul Rauf <abdulraufmujahid@gmail.com>
Signed-off-by: NGreg Kroah-Hartman <gregkh@linuxfoundation.org>

Found by checkpatch:
- s/cacluated/calculated/
- s/convertor/converter/
- s/psudo/pseudo/
- s/halfs/halves/
Signed-off-by: NJoseph Wright <rjosephwright@gmail.com>
Signed-off-by: NGreg Kroah-Hartman <gregkh@linuxfoundation.org>

There are multiple entries for ili9225 display defined in
flexfb_chip_table array. remove duplicate entries and
keep single entry.
Signed-off-by: NAmitesh Singh <singh.amitesh@gmail.com>
Signed-off-by: NGreg Kroah-Hartman <gregkh@linuxfoundation.org>

This hardware block could at used at same time for PWM generation
and IIO timers.
PWM and IIO timer configuration are mixed in the same registers
so we need a multi fonction driver to be able to share those registers.

version 7:
- rebase on v4.10-rc2

version 6:
- rename files to stm32-timers
- rename functions to stm32_timers_xxx

version 5:
- fix Lee comments about detect function
- add missing dependency on REGMAP_MMIO

version 4:
- add a function to detect Auto Reload Register (ARR) size
- rename the structure shared with other drivers

version 2:
- rename driver "stm32-gptimer" to be align with SoC documentation
- only keep one compatible
- use of_platform_populate() instead of devm_mfd_add_devices()
Signed-off-by: NBenjamin Gaignard <benjamin.gaignard@st.com>
Acked-by: NRob Herring <robh@kernel.org>
Signed-off-by: NLee Jones <lee.jones@linaro.org>

Modify lirc_parallel driver to use the new parallel port device model.
Signed-off-by: NSudip Mukherjee <sudip.mukherjee@codethink.co.uk>
Signed-off-by: NGreg Kroah-Hartman <gregkh@linuxfoundation.org>

Modify all the msg union fields from typedefs to
to proper structures.
Signed-off-by: NJames Simmons <uja.ornl@yahoo.com>
Intel-bug-id: https://jira.hpdd.intel.com/browse/LU-6142
Reviewed-on: https://review.whamcloud.com/24566Reviewed-by: NDoug Oucharek <doug.s.oucharek@intel.com>
Reviewed-by: NOlaf Weber <olaf@sgi.com>
Reviewed-by: NAndreas Dilger <andreas.dilger@intel.com>
Reviewed-by: NDmitry Eremin <dmitry.eremin@intel.com>
Signed-off-by: NJames Simmons <jsimmons@infradead.org>
Signed-off-by: NGreg Kroah-Hartman <gregkh@linuxfoundation.org>

Change lnet_hdr_t from typedef to proper structure.
Signed-off-by: NJames Simmons <uja.ornl@yahoo.com>
Intel-bug-id: https://jira.hpdd.intel.com/browse/LU-6142
Reviewed-on: https://review.whamcloud.com/24566Reviewed-by: NDoug Oucharek <doug.s.oucharek@intel.com>
Reviewed-by: NOlaf Weber <olaf@sgi.com>
Reviewed-by: NAndreas Dilger <andreas.dilger@intel.com>
Reviewed-by: NDmitry Eremin <dmitry.eremin@intel.com>
Signed-off-by: NJames Simmons <jsimmons@infradead.org>
Signed-off-by: NGreg Kroah-Hartman <gregkh@linuxfoundation.org>

Change lnet_magicversion_t from typedef to proper structure.
Signed-off-by: NJames Simmons <uja.ornl@yahoo.com>
Intel-bug-id: https://jira.hpdd.intel.com/browse/LU-6142
Reviewed-on: https://review.whamcloud.com/24566Reviewed-by: NDoug Oucharek <doug.s.oucharek@intel.com>
Reviewed-by: NOlaf Weber <olaf@sgi.com>
Reviewed-by: NAndreas Dilger <andreas.dilger@intel.com>
Reviewed-by: NDmitry Eremin <dmitry.eremin@intel.com>
Signed-off-by: NJames Simmons <jsimmons@infradead.org>
Signed-off-by: NGreg Kroah-Hartman <gregkh@linuxfoundation.org>

Change lnet_acceptor_connreq_t from typedef to proper structure.
Signed-off-by: NJames Simmons <uja.ornl@yahoo.com>
Intel-bug-id: https://jira.hpdd.intel.com/browse/LU-6142
Reviewed-on: https://review.whamcloud.com/24566Reviewed-by: NDoug Oucharek <doug.s.oucharek@intel.com>
Reviewed-by: NOlaf Weber <olaf@sgi.com>
Reviewed-by: NAndreas Dilger <andreas.dilger@intel.com>
Reviewed-by: NDmitry Eremin <dmitry.eremin@intel.com>
Signed-off-by: NJames Simmons <jsimmons@infradead.org>
Signed-off-by: NGreg Kroah-Hartman <gregkh@linuxfoundation.org>