greybus: Documentation/sysfs-bus-greybus: document module sysfs files
This documents the module slot sysfs files "epm", "power_control", and
"present".
Signed-off-by: Greg Kroah-Hartman <gregkh@google.com>
Reviewed-by: Alex Elder <elder@linaro.org>
diff --git a/drivers/staging/greybus/Documentation/sysfs-bus-greybus b/drivers/staging/greybus/Documentation/sysfs-bus-greybus
index c0e0c0a..4b511db 100644
--- a/drivers/staging/greybus/Documentation/sysfs-bus-greybus
+++ b/drivers/staging/greybus/Documentation/sysfs-bus-greybus
@@ -21,6 +21,36 @@
Description:
The version number of the firmware in the SVC device.
+What: /sys/bus/greybus/device/endo-XXXX/../epm
+Date: October 2015
+KernelVersion: 4.XX
+Contact: Greg Kroah-Hartman <greg@kroah.com>
+Description:
+ The EPM (Electropermanent Magnet) control file for
+ the specific module slot the file is present in.
+ Writing 1 to it turns it on, writing 0 to it turns it
+ off. Reading the value returns if it is on or off.
+
+What: /sys/bus/greybus/device/endo-XXXX/../power_control
+Date: October 2015
+KernelVersion: 4.XX
+Contact: Greg Kroah-Hartman <greg@kroah.com>
+Description:
+ The power control file for the specific module slot that
+ the file is present in. Writing 1 to it turns power on
+ to the module, writing 0 to it turns power off to the
+ module. Reading the value returns if it is on or off.
+
+What: /sys/bus/greybus/device/endo-XXXX/../present
+Date: October 2015
+KernelVersion: 4.XX
+Contact: Greg Kroah-Hartman <greg@kroah.com>
+Description:
+ The "is a module present in the slot" file for the
+ specific module slot that the file is present in.
+ This is read-only, 1 means a module is present, 0 means
+ no module is present.
+
What: /sys/bus/greybus/device/.../product
Date: October 2015
KernelVersion: 4.XX