Introduce new compatible to support STM32F4 DAC (Digital-To-Analog
converter) variant.
Signed-off-by: NFabrice Gasnier <fabrice.gasnier@st.com>
Acked-by: NRob Herring <robh@kernel.org>
Signed-off-by: NJonathan Cameron <Jonathan.Cameron@huawei.com>

Don't populate array startup_lookup on the stack but instead make
it static.  Makes the object code smaller.

Before:
   text	   data	    bss	    dec	    hex	filename
  21754	   5440	    128	  27322	   6aba	drivers/iio/adc/at91_adc.o

After:
   text	   data	    bss	    dec	    hex	filename
  21613	   5496	    128	  27237	   6a65	drivers/iio/adc/at91_adc.o
Signed-off-by: NColin Ian King <colin.king@canonical.com>
Signed-off-by: NJonathan Cameron <Jonathan.Cameron@huawei.com>

In order to use the standard name convention rename H3LIS331DL_DRIVER_NAME
macro in H3LIS331DL_ACCEL_DEV_NAME
Signed-off-by: NLorenzo Bianconi <lorenzo.bianconi@st.com>
Signed-off-by: NJonathan Cameron <Jonathan.Cameron@huawei.com>

Signed-off-by: NLorenzo Bianconi <lorenzo.bianconi@st.com>
Signed-off-by: NJonathan Cameron <Jonathan.Cameron@huawei.com>

Add H3LIS331DL, LIS331DL and LIS3LV02DL entries in st_accel_id_table

Fixes: 1e52fefc (iio: accel: Add support for the h3lis331dl accel)
Fixes: bbf5f037 (iio: st_accel: support the LIS331DL sensor)
Fixes: 3acddf74 (iio: st-sensors: add support for lis3lv02d accel)
Signed-off-by: NLorenzo Bianconi <lorenzo.bianconi@st.com>
Signed-off-by: NJonathan Cameron <Jonathan.Cameron@huawei.com>

Making the const array startup_lookup static rather having it on the
stack saves 69 bytes. Add in missing int specifier to clean up a
checkpatch warning.

Before:
   text	   data	    bss	    dec	    hex	filename
  10297	   2800	    128	  13225	   33a9	drivers/iio/adc/at91-sama5d2_adc.o

After:
   text	   data	    bss	    dec	    hex	filename
  10140	   2888	    128	  13156	   3364	drivers/iio/adc/at91-sama5d2_adc.o
Signed-off-by: NColin Ian King <colin.king@canonical.com>
Signed-off-by: NJonathan Cameron <Jonathan.Cameron@huawei.com>

Making the const array init_data static rather having it on the
stack saves us a couple hundreds of bytes:

Before:
   text	   data	    bss	    dec	    hex	filename
   3175	    848	      0	   4023	    fb7	drivers/iio/accel/da311.o

After:
   text	   data	    bss	    dec	    hex	filename
   2860	    936	      0	   3796	    ed4	drivers/iio/accel/da311.o
Signed-off-by: NColin Ian King <colin.king@canonical.com>
Signed-off-by: NJonathan Cameron <Jonathan.Cameron@huawei.com>

Check return value from call to of_match_device()
in order to prevent a NULL pointer dereference.

In case of NULL print error message and return -ENODEV
Signed-off-by: NGustavo A. R. Silva <garsilva@embeddedor.com>
Signed-off-by: NJonathan Cameron <Jonathan.Cameron@huawei.com>

Check return value from call to of_match_device()
in order to prevent a NULL pointer dereference.

In case of NULL print error message and return -ENODEV
Signed-off-by: NGustavo A. R. Silva <garsilva@embeddedor.com>
Acked-by: NMartin Blumenstingl <martin.blumenstingl@googlemail.com>
Signed-off-by: NJonathan Cameron <Jonathan.Cameron@huawei.com>

The return value from tsl2x7x_invoke_change() was not checked in most
places in the driver. This patch adds the proper error checks. The
return values inside tsl2x7x_invoke_change() are now checked by
this patch as well.

Previously, if there was an error turning the chip back on, then the
driver would attempt to turn the chip off and incorrectly return
success. The code to power off the chip is removed by this patch
since we should fail fast.
Signed-off-by: NBrian Masney <masneyb@onstation.org>
Signed-off-by: NJonathan Cameron <Jonathan.Cameron@huawei.com>

This driver in some cases can busy wait for upwards of 15ms. Since the
kernel at this point is not running in atomic context, and is running in
process context, we can safely use usleep_range() instead. This patch
changes the two occurrences of mdelay() to usleep_range().
Signed-off-by: NBrian Masney <masneyb@onstation.org>
Signed-off-by: NJonathan Cameron <Jonathan.Cameron@huawei.com>

tsl2x7x_read_thresh() and tsl2x7x_write_thresh() currently assumes
that IIO_EV_INFO_VALUE is the only iio_event_info that will be
passed in.  This patch refactors these two functions so that
additional iio_event_infos can be passed in. The functions are
renamed from tsl2x7x_{read,write}_thresh() to
tsl2x7x_{read,write}_event_value(). This patch also adds the
missing return value check to tsl2x7x_invoke_change() since this
was previously missing. This patch is in preparation for moving
the in_intensity0_thresh_period and in_proximity0_thresh_period sysfs
attributes to be created by iio_event_spec.
Signed-off-by: NBrian Masney <masneyb@onstation.org>
Signed-off-by: NJonathan Cameron <Jonathan.Cameron@huawei.com>

The calibration function calls i2c_smbus_write_byte() and
i2c_smbus_read_byte(). These two function calls are replaced with a
single call to i2c_smbus_read_byte_data() by this patch. This patch
also removes an unnecessary call that reads the CNTRL register
a second time. One of the error paths returned -1 if the ADC was not
enabled and this patch changes that return value to -EINVAL.
Signed-off-by: NBrian Masney <masneyb@onstation.org>
Signed-off-by: NJonathan Cameron <Jonathan.Cameron@huawei.com>

tsl2x7x_i2c_read() would call i2c_smbus_write_byte() and
i2c_smbus_read_byte(). These two i2c functions can be replaced with a
single call to i2c_smbus_read_byte_data(). This patch removes the
tsl2x7x_i2c_read() function and replaces all occurrences with a call to
i2c_smbus_read_byte_data().
Signed-off-by: NBrian Masney <masneyb@onstation.org>
Signed-off-by: NJonathan Cameron <Jonathan.Cameron@huawei.com>

The TSL2X7X driver has a custom power_state sysfs attribute. Remove this
attribute since the runtime power management code provides a sysfs
attribute to control the power state of the device.
Signed-off-by: NBrian Masney <masneyb@onstation.org>
Signed-off-by: NJonathan Cameron <Jonathan.Cameron@huawei.com>

Add device tree support for the tsl2x7x IIO driver with no custom
properties. The device tree documentation is in a separate commit so
that the changes to trivial-devices.txt can go in via the device
tree subsystem.
Signed-off-by: NBrian Masney <masneyb@onstation.org>
CC: Rob Herring <robh+dt@kernel.org>
CC: Mark Rutland <mark.rutland@arm.com>
CC: devicetree@vger.kernel.org
Signed-off-by: NJonathan Cameron <Jonathan.Cameron@huawei.com>

This patch adds support for Diolan DLN2 ADC via IIO's ADC interface.
ADC is the fourth and final component of the DLN2 for the kernel.
Signed-off-by: NJack Andersen <jackoalan@gmail.com>
Signed-off-by: NJonathan Cameron <Jonathan.Cameron@huawei.com>

Add newlines to the macro definitions and use a more common style.
Signed-off-by: NJoe Perches <joe@perches.com>
Signed-off-by: NJonathan Cameron <jic23@kernel.org>

The LTC2741 and LTC2473 are single voltage ADC chips. The LTC2473
is similar to the LTC2471 but outputs a signed differential value.

Datasheet:
  http://cds.linear.com/docs/en/datasheet/24713fb.pdfSigned-off-by: NMike Looijmans <mike.looijmans@topic.nl>
Reviewed-by: NLars-Peter Clausen <lars@metafoo.de>
Signed-off-by: NJonathan Cameron <jic23@kernel.org>

Set up and use triggered buffer if there is irq defined for device in
device tree. Trigger producer triggers from rpr0521 drdy interrupt line.
Trigger consumer reads rpr0521 data to scan buffer.
Depends on previous commits of _scale and _offset.
Signed-off-by: NMikko Koivunen <mikko.koivunen@fi.rohmeurope.com>
Signed-off-by: NJonathan Cameron <jic23@kernel.org>

This patch fixes the following checkpatch warnings:

Prefer 'unsigned int' to bare use of 'unsigned
Signed-off-by: NReno Farnesi <nfarnesi4@gmail.com>
Signed-off-by: NJonathan Cameron <jic23@kernel.org>

Add device tree support for LPS22HB, LPS25H, LPS331AP, LPS001WP
pressure sensors
Signed-off-by: NLorenzo Bianconi <lorenzo.bianconi@st.com>
Reviewed-by: NLinus Walleij <linus.walleij@linaro.org>
Signed-off-by: NJonathan Cameron <jic23@kernel.org>

Add device tree support for L3G4200D, LSM330D, LSM330DL, LSM330DLC,
L3GD20, L3GD20H, L3G4IS, LSM330, LSM9DS0 gyroscope sensors
Signed-off-by: NLorenzo Bianconi <lorenzo.bianconi@st.com>
Reviewed-by: NLinus Walleij <linus.walleij@linaro.org>
Signed-off-by: NJonathan Cameron <jic23@kernel.org>

Add device tree support for LIS3MDL and LSM303AGR magnetometer sensors
Signed-off-by: NLorenzo Bianconi <lorenzo.bianconi@st.com>
Reviewed-by: NLinus Walleij <linus.walleij@linaro.org>
Signed-off-by: NJonathan Cameron <jic23@kernel.org>

Add device tree support for LIS3DH, LSM330D, LSM330DL, LSM330DLC,
LIS331DLH, LSM330, LSM303AGR, LIS2DH12, LIS3L02DQ, LNG2DM accel sensors.
Fix LIS302DL support defining of_device_id data field in st_accel_of_match
table

Fixes: 76222772 (iio: accel: st_accel: handle deprecated bindings)
Signed-off-by: NLorenzo Bianconi <lorenzo.bianconi@st.com>
Reviewed-by: NLinus Walleij <linus.walleij@linaro.org>
Signed-off-by: NJonathan Cameron <jic23@kernel.org>

Don't inflate the kernel size with data that isn't used. The conditional
declaration also fixes the following warning when building with clang:

drivers/iio/magnetometer/ak8975.c:704:36: error: variable 'ak_acpi_match'
  is not needed and will not be emitted
  [-Werror,-Wunneeded-internal-declaration]
Signed-off-by: NMatthias Kaehlcke <mka@chromium.org>
Acked-by: NLinus Walleij <linus.walleij@linaro.org>
Signed-off-by: NJonathan Cameron <jic23@kernel.org>

Removes trailing whitespace to fix checkpatch errors
Signed-off-by: NReno Farnesi <nfarnesi4@gmail.com>
Signed-off-by: NJonathan Cameron <jic23@kernel.org>

Add missing hooks in the LTC2497 IIO driver to allow hwmon mapping.
Signed-off-by: NGaurav Gupta <gauragup@cisco.com>
Signed-off-by: NJonathan Cameron <jic23@kernel.org>

The array stm32h7_adc_ckmodes_spec does not need to be in global scope, so
make it static.

Cleans up sparse warning:
"symbol 'stm32h7_adc_ckmodes_spec' was not declared. Should it be static?"
Signed-off-by: NColin Ian King <colin.king@canonical.com>
Acked-by: NFabrice Gasnier <fabrice.gasnier@st.com>
Signed-off-by: NJonathan Cameron <jic23@kernel.org>

Some part of the configuration are not touched after the probe
and if something goes wrong on writing the initial one,
the chip will misbehave.
Adding an error checking ensures that the inital configuration will
be written correctly. Moreover ensures that a sensible configuration
will be saved in driver data and used subsequently as intended.
Signed-off-by: NAngelo Compagnucci <angelo.compagnucci@gmail.com>
Reported-by: NMaarten Brock <m.brock@vanmierlo.com>
Signed-off-by: NJonathan Cameron <jic23@kernel.org>

Initial channel should be the first available channel on
all configurations, so changing to channel 0 available on
all supported chips.
Signed-off-by: NAngelo Compagnucci <angelo.compagnucci@gmail.com>
Reported-by: NMaarten Brock <m.brock@vanmierlo.com>
Signed-off-by: NJonathan Cameron <jic23@kernel.org>

Open drain should work fine with rising or high level IRQs,
this code was due to some misunderstanding on my part.
Reported-by: NLorenzo Bianconi <lorenzo.bianconi83@gmail.com>
Signed-off-by: NLinus Walleij <linus.walleij@linaro.org>
Signed-off-by: NJonathan Cameron <jic23@kernel.org>

Add a link to the TCS3472 datasheet in the AMS's website.

Cc: Peter Meerwald <pmeerw@pmeerw.net>
Cc: Jonathan Cameron <jic23@kernel.org>
Signed-off-by: NAkinobu Mita <akinobu.mita@gmail.com>
Signed-off-by: NJonathan Cameron <jic23@kernel.org>

This commit adds mt7622 compatible node.
Signed-off-by: NZhiyong Tao <zhiyong.tao@mediatek.com>
Signed-off-by: NJonathan Cameron <jic23@kernel.org>

This patch supports auxadc suspend/resume flow.
Disable auxadc clk and power in suspend function.
Enable axuadc clk and power in resume function.
Signed-off-by: NZhiyong Tao <zhiyong.tao@mediatek.com>
Signed-off-by: NJonathan Cameron <jic23@kernel.org>

The commit adds mt7622 compatible node in binding document.
Signed-off-by: NZhiyong Tao <zhiyong.tao@mediatek.com>
Acked-by: NRob Herring <robh@kernel.org>
Signed-off-by: NJonathan Cameron <jic23@kernel.org>

Signed-off-by: NLorenzo Bianconi <lorenzo.bianconi@st.com>
Acked-by: NRob Herring <robh@kernel.org>
Signed-off-by: NJonathan Cameron <jic23@kernel.org>

Signed-off-by: NLorenzo Bianconi <lorenzo.bianconi@st.com>
Acked-by: NRob Herring <robh@kernel.org>
Signed-off-by: NJonathan Cameron <jic23@kernel.org>

Add open drain support in order to share requested IRQ line between
st_lsm6dsx device and other peripherals
Signed-off-by: NLorenzo Bianconi <lorenzo.bianconi@st.com>
Signed-off-by: NJonathan Cameron <jic23@kernel.org>

Add device tree bindings for Measurement-Specialties MS5637, MS5805, MS5837 and MS8607 pressure & temperature sensor
Signed-off-by: NManivannan Sadhasivam <manivannan.sadhasivam@linaro.org>
Signed-off-by: NJonathan Cameron <jic23@kernel.org>