[PATCH 2/3] Documentation: add sysfs ABI documentation for bmp18x

[Eric Andersson]

This patch adds sysfs documentation for Bosch Sensortec's BMP18x
pressure sensors.

Reviewed-by: Stefan Nilsson <stefan.nilsson@xxxxxxxxxxxxx>
Signed-off-by: Eric Andersson <eric.andersson@xxxxxxxxxxxxx>
---
 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@xxxxxxxxxxxxx>
+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@xxxxxxxxxxxxx>
+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@xxxxxxxxxxxxx>
+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@xxxxxxxxxxxxx>
+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@xxxxxxxxxxxxx>
+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@xxxxxxxxxxxxx>
+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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