Now that we have a custom printf format specifier, convert users of
full_name to use %pOF instead. This is preparation to remove storing
of the full path string for each node.
Signed-off-by: NRob Herring <robh@kernel.org>
Cc: Jonathan Cameron <jic23@kernel.org>
Cc: Hartmut Knaack <knaack.h@gmx.de>
Cc: Lars-Peter Clausen <lars@metafoo.de>
Cc: Peter Meerwald-Stadler <pmeerw@pmeerw.net>
Cc: Carlo Caione <carlo@caione.org>
Cc: Kevin Hilman <khilman@baylibre.com>
Cc: linux-iio@vger.kernel.org
Cc: linux-arm-kernel@lists.infradead.org
Cc: linux-amlogic@lists.infradead.org
Signed-off-by: NJonathan Cameron <Jonathan.Cameron@huawei.com>

Add support for active low interrupts (IRQF_TRIGGER_LOW and
IRQF_TRIGGER_FALLING). Configure the device as active high or low
according to the requested irq line.
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>

Configure sensor ODR just in hts221_write_raw() in order to avoid
to set device sample rate multiple times.
Signed-off-by: NLorenzo Bianconi <lorenzo.bianconi@st.com>
Signed-off-by: NJonathan Cameron <Jonathan.Cameron@huawei.com>

GENMASK(6, 3) in CTRL_REG1 and GENMASK(6, 2) in CTRL_REG2 are marked
reserved. Do not changed the original value (not declared in the
datasheet) during power-down/suspend routines.

Fixes: e4a70e3e (iio: humidity: add support to hts221 rh/temp device)
Fixes: b7079eea (iio: humidity: hts221: add power management support)
Signed-off-by: NLorenzo Bianconi <lorenzo.bianconi@st.com>
Signed-off-by: NJonathan Cameron <Jonathan.Cameron@huawei.com>

Enable Block Data Update in hts221_probe() in order to avoid to reconfigure
it every time the sensor is enabled
Signed-off-by: NLorenzo Bianconi <lorenzo.bianconi@st.com>
Signed-off-by: NJonathan Cameron <Jonathan.Cameron@huawei.com>

Move bit-shift in hts221_write_with_mask() instead of coding
the shift depth in the configured value. That change will be necessary
to fix an issue in device power-down procedure.
Simplify hts221_avg_list table management
Signed-off-by: NLorenzo Bianconi <lorenzo.bianconi@st.com>
Signed-off-by: NJonathan Cameron <Jonathan.Cameron@huawei.com>

Add support for CCS811 VOC sensor. This patch adds support
for reading current and voltage across the sensor and TVOC
and equivalent CO2 values.

Scale and offset values have been computed according to datasheet:
    - For current: raw value is in microamps
        => 0.001 scale to convert to milliamps
    - For voltage: 1.65V = 1023, therefore 1650mV = 1023
        => 1650.0/1023 = 1.612903 scale to convert to millivolts
    - For eCO2: raw value range is from 400ppm to 8192ppm.
        => (val - 400) * (100 - 0) / (8192 - 400) + 0 =
           (val - 400) * 0.01283367 => offset: -400, scale = 0.012834
           to get a percentage value
    -For TVOC: raw value range is from 0ppb to 1187ppb.
        => (val - 0) * 100 / (1187 - 0) + 0 = val * 0.0842459 =>
            scale = 0.084246 for getting a percentage value

Cc: Daniel Baluta <daniel.baluta@gmail.com>
Cc: Alison Schofield <amsfield22@gmail.com>
Signed-off-by: NNarcisa Ana Maria Vasile <narcisaanamaria12@gmail.com>
Signed-off-by: NJonathan Cameron <Jonathan.Cameron@huawei.com>

The gpiod API checks for NULL descriptors, so there is no need to
duplicate the check in the driver.
Signed-off-by: NFabio Estevam <fabio.estevam@nxp.com>
Signed-off-by: NJonathan Cameron <Jonathan.Cameron@huawei.com>

Drop static on a local variable, when the variable is initialized before
any possible use.  Thus, the static has no benefit.

The semantic patch that fixes this problem is as follows:
(http://coccinelle.lip6.fr/)

// <smpl>
@bad exists@
position p;
identifier x;
type T;
@@
static T x@p;
...
x = <+...x...+>

@@
identifier x;
expression e;
type T;
position p != bad.p;
@@
-static
 T x@p;
 ... when != x
     when strict
?x = e;
// </smpl>
Signed-off-by: NJulia Lawall <Julia.Lawall@lip6.fr>
Signed-off-by: NJonathan Cameron <Jonathan.Cameron@huawei.com>

When adding maps to the list, they were added using list_add, which adds
them in LIFO order. When parsing using iio_channel_get_all(), these
elements are hence returned in reverse order. As a result, the iio_hwmon
mapping maps the first entry to the last channel and so on.
Signed-off-by: NGaurav Gupta <gauragup@cisco.com>
Signed-off-by: NJonathan Cameron <Jonathan.Cameron@huawei.com>

This adds support for STM32F4 Digital-To-Analog converter.
Add compatible configuration data to handle hfsel (not present
in stm32f4).
Signed-off-by: NFabrice Gasnier <fabrice.gasnier@st.com>
Signed-off-by: NJonathan Cameron <Jonathan.Cameron@huawei.com>

Fix error message, there's no 'st,dac-channel' property, but 'reg'
(see https://lkml.org/lkml/2017/4/3/567).
Signed-off-by: NFabrice Gasnier <fabrice.gasnier@st.com>
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>

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>