diff options
| author | Andreas Klinger <ak@it-klinger.de> | 2017-01-31 19:03:45 +0100 |
|---|---|---|
| committer | Tao Huang <huangtao@rock-chips.com> | 2019-01-07 17:59:09 +0800 |
| commit | f65a3417e6937730e052262860a70e80844b9383 (patch) | |
| tree | 6fb536fad991d437e4c46becb12bebcf7591af03 /MAINTAINERS | |
| parent | e2f45cba7be1bfb3e37aae6a3ecf6d49259c8cf1 (diff) | |
UPSTREAM: iio: distance: add devantech us ranger srf04
This patch adds support for the ultrasonic ranger srf04 of devantech.
This device is measuring the distance of objects in a range between 1 cm
and 3 meters and a theoretical resolution of 3 mm.
There are two GPIOs used:
- trigger: set as output to the device when the measurement should start
- echo: set by the device when the ultrasonic wave is sent out and reset
when the echo is recognized; this needs to be an interrupt input
The time between setting and resetting the echo pin is the time the
waveform needed for one round trip. This time is recorded in the interrupt
handler.
The distance is calculated in the read function by using the ultrasonic
speed at 20 degrees celsius which is about 343 m/s.
Conflicts:
drivers/iio/proximity/Makefile
Change-Id: I570e4008e1db87c7af9a9107260fda48bfb6542a
Signed-off-by: Andreas Klinger <ak@it-klinger.de>
Signed-off-by: Jonathan Cameron <jic23@kernel.org>
(cherry picked from commit feda2840040fcf87d826b0aec945a98222e656ba)
Signed-off-by: Ziyuan Xu <xzy.xu@rock-chips.com>
Diffstat (limited to 'MAINTAINERS')
| -rw-r--r-- | MAINTAINERS | 6 |
1 files changed, 6 insertions, 0 deletions
diff --git a/MAINTAINERS b/MAINTAINERS index 78978f96747d..d09e4c9cf8f2 100644 --- a/MAINTAINERS +++ b/MAINTAINERS @@ -3413,6 +3413,12 @@ T: git git://git.kernel.org/pub/scm/linux/kernel/git/balbi/usb.git S: Maintained F: drivers/usb/dwc3/ +DEVANTECH SRF ULTRASONIC RANGER IIO DRIVER +M: Andreas Klinger <ak@it-klinger.de> +L: linux-iio@vger.kernel.org +S: Maintained +F: drivers/iio/proximity/srf*.c + DEVICE COREDUMP (DEV_COREDUMP) M: Johannes Berg <johannes@sipsolutions.net> L: linux-kernel@vger.kernel.org |