kernel.git/drivers/iio/humidity, branch linux-4.12.y

iio: humidity: hts221: Remove unnecessary cast on void pointer

2017-04-02T08:50:32Z

The following Coccinelle script was used to detect this: @r@ expression x; void* e; type T; identifier f; @@ ( *((T *)e) | ((T *)x)[...] | ((T*)x)->f | - (T*) e ) Signed-off-by: simran singhal Signed-off-by: Jonathan Cameron

iio: humidity: hdc100x: constify attribute_group structures

2017-04-01T10:37:06Z

Check for attribute_group structures that are only stored in the attrs filed of iio_info structure. As the attrs field of iio_info structures is constant, so these attribute_group structures can also be declared constant. Done using coccinelle: @r1 disable optional_qualifier @ identifier i; position p; @@ static struct attribute_group i@p = {...}; @ok1@ identifier r1.i; position p; struct iio_info x; @@ x.attrs=&i@p; @bad@ position p!={r1.p,ok1.p}; identifier r1.i; @@ i@p @depends on !bad disable optional_qualifier@ identifier r1.i; @@ static +const struct attribute_group i={...}; @depends on !bad disable optional_qualifier@ identifier r1.i; @@ +const struct attribute_group i; File size before: text data bss dec hex filename 3459 488 0 3947 f6b drivers/iio/humidity/hdc100x.o File size after: text data bss dec hex filename 3507 424 0 3931 f5b drivers/iio/humidity/hdc100x.o Signed-off-by: simran singhal Signed-off-by: Jonathan Cameron

iio: hid: Add humidity sensor support

2017-03-25T16:32:24Z

Environmental humidity sensor is a hid defined sensor, it shows raw humidity measurement of air. More information can be found in: http://www.usb.org/developers/hidpage/HUTRR39b.pdf According to IIO ABI definition, humidityrelative data output unit is milli percent. Add the unit convert from percent to milli percent. Signed-off-by: Song Hongyan Signed-off-by: Jonathan Cameron

Merge 4.10-rc7 into staging-next

2017-02-06T08:36:10Z

This resolves the merge errors that were reported in linux-next and it picks up the staging and IIO fixes that we need/want in here as well. Signed-off-by: Greg Kroah-Hartman

iio: dht11: Use usleep_range instead of msleep for start signal

2017-01-22T13:35:40Z

The DHT22 (AM2302) datasheet specifies that the LOW start pulse should not exceed 20ms. However, observations with an oscilloscope of an RPi Model 2B (rev 1.1) communicating with a DHT22 sensor showed that the driver was consistently sending start pulses longer than 20ms: Kernel 4.7.10-v7+ (n=132): Minimum pulse length: 20.20ms Maximum: 29.84ms Mean: 24.96ms StDev: 2.82ms Sensor response rate: 100% Read success rate: 76% On kernel 4.8, the start pulse was so long that the sensor would not even respond 97% of the time: Kernel 4.8.16-v7+ (n=100): Minimum pulse length: 30.4ms Maximum: 74.4ms Mean: 39.3ms StDev: 10.2ms Sensor response rate: 3% Read success rate: 3% The driver would return ETIMEDOUT and write log messages like this: [ 51.430987] dht11 dht11@0: Only 1 signal edges detected [ 66.311019] dht11 dht11@0: Only 0 signal edges detected Replacing msleep(18) with usleep_range(18000, 20000) made the pulse length sane again and restored responsiveness: Kernel 4.8.16-v7+ with usleep_range (n=123): Minimum pulse length: 18.16ms Maximum: 20.20ms Mean: 19.85ms StDev: 0.51ms Sensor response rate: 100% Read success rate: 84% Cc: stable@vger.kernel.org Signed-off-by: John Brooks Reviewed-by: Harald Geyer Signed-off-by: Jonathan Cameron

iio: humidity: Support acpi probe for hts211

2016-12-03T08:56:28Z

Support driver probe by reading unique HID on systems based on ACPI instead of DT compatible strings. Signed-off-by: Shrirang Bagul Signed-off-by: Jonathan Cameron

iio: si7020: Add devicetree support and trivial bindings

2016-11-01T18:49:53Z

This adds devicetree support for the si7020 iio driver. Since it works well without requiring any additional property, its compatible string is added to the trivial i2c devices bindings list. Signed-off-by: Paul Kocialkowski Acked-by: Rob Herring Signed-off-by: Jonathan Cameron

iio: humidity: remove duplicated include from hts221_buffer.c

2016-11-01T18:43:46Z

Remove duplicated include. Signed-off-by: Wei Yongjun Signed-off-by: Jonathan Cameron

iio: humidity: hdc100x: add triggered buffer support for HDC100X

2016-10-23T18:34:25Z

Triggered buffer support uses the HDC100X's dual acquisition mode to read both humidity and temperature in one shot. This patch depends on 447136effbf4 ("iio: humidity: hdc100x: fix sensor data reads of temp and humidity") Signed-off-by: Alison Schofield Cc: Daniel Baluta Signed-off-by: Jonathan Cameron

iio: humidity: add support to hts221 rh/temp combo device

2016-10-23T18:34:09Z

Add support to STM HTS221 humidity + temperature sensor http://www.st.com/resource/en/datasheet/hts221.pdf - continuous mode support - i2c support - spi support - trigger mode support Signed-off-by: Lorenzo Bianconi Signed-off-by: Jonathan Cameron