On 5/2/2012 9:39 AM, Jonathan Cameron wrote:
Added cc's
Jon, remember to wrap emails at 80 chars please!
Request for Comments -
Documentation patch to add Correlated Color Temperature (CCT) and RGBC
(red/green/blue/clear) data.
The addition of CCT and RGBC is afforded by utilizing a 'real channel'
type of IIO_CCT, and 4 modifiers of IIO_MOD_LIGHT_CLEAR,
IIO_MOD_LIGHT_RED, IIO_MOD_LIGHT_GREEN, and IIO_MOD_LIGHT_BLUE, found
in types.h.
If we were to apply this to the existing sensors, how do we distinguish
between 'clear' vs the visable+infrared option that is there already?
I note below that you have distinguished this by saying it is on
a colour sensor only. That seems a little bit inconsistent given
a single wide band sensor might be measuring the same thing...
I'm fine with the colour ones btw but one query below..
A trivial addition to industrialio-core.c is required.
in_cct0_input will return typically return the color temperature
expressed in kelvins.
IIO_MODIFIERs are respective of the associated light frequencies for
each of the channels.
Signed-off-by: Jon Brenner<jbrenner@xxxxxxxxxxx>
---
.../staging/iio/Documentation/sysfs-bus-iio-light | 46
++++++++++++++++++++
1 files changed, 46 insertions(+), 0 deletions(-)
diff --git a/drivers/staging/iio/Documentation/sysfs-bus-iio-light
b/drivers/staging/iio/Documentation/sysfs-bus-iio-light
index 715c74d..bd42baf 100644
--- a/drivers/staging/iio/Documentation/sysfs-bus-iio-light
+++ b/drivers/staging/iio/Documentation/sysfs-bus-iio-light
@@ -34,6 +34,15 @@ Description:
it comes back in SI units, it should also include _input else it
should include _raw to signify it is not in SI units.
+What: /sys/bus/iio/devices/device[n]/in_cct0[_input|_raw]
+KernelVersion: 3.4.0
+Contact: linux-iio@xxxxxxxxxxxxxxx
+Description:
+ This should return the correlated color temperature from the
+ light sensor. If it comes back in SI units, it should also
+ include _input else it should include _raw to signify it is not
+ in SI units.
+
What: /sys/.../device[n]/proximity_on_chip_ambient_infrared_supression
KernelVersion: 2.6.37
Contact: linux-iio@xxxxxxxxxxxxxxx
@@ -82,3 +91,40 @@ Contact: linux-iio@xxxxxxxxxxxxxxx
Description:
This property gets/sets the table of coefficients
used in calculating illuminance in lux.
+
+What: /sys/bus/iio/devices/device[n]/in_intensity_clear[_input|_raw]
+KernelVersion: 3.4.0
+Contact: linux-iio@xxxxxxxxxxxxxxx
+Description:
+ This property is supported by sensors that have a RGBC
+ sensing mode. This value should be the output from a reading
+ and if expressed in SI units, should include _input. If this
+ value is not in SI units, then it should include _raw.
+
+What: /sys/bus/iio/devices/device[n]/in_intensity_red[_input|_raw]
+KernelVersion: 3.4.0
+Contact: linux-iio@xxxxxxxxxxxxxxx
+Description:
+ This property is supported by sensors that have a RGBC
+ sensing mode. This value should be the output from a reading
+ and if expressed in SI units, should include _input. If this
+ value is not in SI units, then it should include _raw.
Err. What are the SI units of intensity?
+
+What: /sys/bus/iio/devices/device[n]/in_intensity_green[_input|_raw]
+KernelVersion: 3.4.0
+Contact: linux-iio@xxxxxxxxxxxxxxx
+Description:
+ This property is supported by sensors that have a RGBC
+ sensing mode. This value should be the output from a reading
+ and if expressed in SI units, should include _input. If this
+ value is not in SI units, then it should include _raw.
+
+What: /sys/bus/iio/devices/device[n]/in_intensity_blue[_input|_raw]
+KernelVersion: 3.4.0
+Contact: linux-iio@xxxxxxxxxxxxxxx
+Description:
+ This property is supported by sensors that have a RGBC
+ sensing mode. This value should be the output from a reading
+ and if expressed in SI units, should include _input. If this
+ value is not in SI units, then it should include _raw.
+
--
1.7.4.1
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