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Subject[PATCH 2/3] Documentation: add sysfs ABI documentation for bmp18x
Date
This patch adds sysfs documentation for Bosch Sensortec's BMP18x
pressure sensors.

Reviewed-by: Stefan Nilsson <stefan.nilsson@unixphere.com>
Signed-off-by: Eric Andersson <eric.andersson@unixphere.com>
---
Documentation/ABI/testing/sysfs-i2c-bmp18x | 31 ++++++++++++++++++++++++++++
Documentation/ABI/testing/sysfs-spi-bmp18x | 31 ++++++++++++++++++++++++++++
2 files changed, 62 insertions(+), 0 deletions(-)
create mode 100644 Documentation/ABI/testing/sysfs-i2c-bmp18x
create mode 100644 Documentation/ABI/testing/sysfs-spi-bmp18x
diff --git a/Documentation/ABI/testing/sysfs-i2c-bmp18x b/Documentation/ABI/testing/sysfs-i2c-bmp18x
new file mode 100644
index 0000000..f6c5799
--- /dev/null
+++ b/Documentation/ABI/testing/sysfs-i2c-bmp18x
@@ -0,0 +1,31 @@
+What: /sys/bus/i2c/devices/<busnum>-<devaddr>/pressure0_input
+Date: February 2012
+Contact: Eric Andersson <eric.andersson@unixphere.com>
+Description: Start a pressure measurement and read the result. Values
+ represent the ambient air pressure in pascal (0.01 millibar).
+
+ Reading: returns the current air pressure.
+
+
+What: /sys/bus/i2c/devices/<busnum>-<devaddr>/temp0_input
+Date: February 2012
+Contact: Eric Andersson <eric.andersson@unixphere.com>
+Description: Measure the ambient temperature. The returned value represents
+ the ambient temperature in units of 0.1 degree celsius.
+
+ Reading: returns the current temperature.
+
+
+What: /sys/bus/i2c/devices/<busnum>-<devaddr>/oversampling
+Date: February 2012
+Contact: Eric Andersson <eric.andersson@unixphere.com>
+Description: Tell the bmp18x to use more samples to calculate a pressure
+ value. When writing to this file the chip will use 2^x samples
+ to calculate the next pressure value with x being the value
+ written. Using this feature will decrease RMS noise and
+ increase the measurement time.
+
+ Reading: returns the current oversampling setting.
+
+ Writing: sets a new oversampling setting.
+ Accepted values: 0..3.
diff --git a/Documentation/ABI/testing/sysfs-spi-bmp18x b/Documentation/ABI/testing/sysfs-spi-bmp18x
new file mode 100644
index 0000000..e3a9be3
--- /dev/null
+++ b/Documentation/ABI/testing/sysfs-spi-bmp18x
@@ -0,0 +1,31 @@
+What: /sys/bus/spi/devices/spi<busnum>.<chipselect>/pressure0_input
+Date: February 2012
+Contact: Eric Andersson <eric.andersson@unixphere.com>
+Description: Start a pressure measurement and read the result. Values
+ represent the ambient air pressure in pascal (0.01 millibar).
+
+ Reading: returns the current air pressure.
+
+
+What: /sys/bus/spi/devices/spi<busnum>.<chipselect>/temp0_input
+Date: February 2012
+Contact: Eric Andersson <eric.andersson@unixphere.com>
+Description: Measure the ambient temperature. The returned value represents
+ the ambient temperature in units of 0.1 degree celsius.
+
+ Reading: returns the current temperature.
+
+
+What: /sys/bus/spi/devices/spi<busnum>.<chipselect>/oversampling
+Date: February 2012
+Contact: Eric Andersson <eric.andersson@unixphere.com>
+Description: Tell the bmp18x to use more samples to calculate a pressure
+ value. When writing to this file the chip will use 2^x samples
+ to calculate the next pressure value with x being the value
+ written. Using this feature will decrease RMS noise and
+ increase the measurement time.
+
+ Reading: returns the current oversampling setting.
+
+ Writing: sets a new oversampling setting.
+ Accepted values: 0..3.
--
1.7.3.4


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