greybus: Documentation/sysfs: add example control devices
Add control devices to the example sysfs tree.
Control devices are named
<bus_id>-<module_id>.<intf_id>.ctrl
and expose attributes that are specific to the greybus interface type.
Specifically, dummy interfaces do not have a control device.
Currently, only the vendor and product strings extracted from the
manifest are exported.
A subtree of the example tree now looks as follows:
greybus1/
├── 1-5
│ ├── 1-5.5
│ │ ├── 1-5.5.2
│ │ │ ├── bundle_class
│ │ │ ├── bundle_id
│ │ │ └── state
│ │ ├── 1-5.5.ctrl
│ │ │ ├── product_string
│ │ │ └── vendor_string
│ │ ├── ddbl1_manufacturer_id
│ │ ├── ddbl1_product_id
│ │ ├── interface_id
│ │ ├── product_id
│ │ ├── serial_number
│ │ └── vendor_id
│ ├── 1-5.6
│ │ └── interface_id
│ ├── eject
│ ├── module_id
│ └── num_interfaces
└── 1-svc
Signed-off-by: Johan Hovold <johan@hovoldconsulting.com>
Reviewed-by: Viresh Kumar <viresh.kumar@linaro.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@google.com>
diff --git a/drivers/staging/greybus/Documentation/sysfs/greybus1/1-2/1-2.2/1-2.2.ctrl/product_string b/drivers/staging/greybus/Documentation/sysfs/greybus1/1-2/1-2.2/1-2.2.ctrl/product_string
new file mode 100644
index 0000000..e69de29
--- /dev/null
+++ b/drivers/staging/greybus/Documentation/sysfs/greybus1/1-2/1-2.2/1-2.2.ctrl/product_string
diff --git a/drivers/staging/greybus/Documentation/sysfs/greybus1/1-2/1-2.2/1-2.2.ctrl/vendor_string b/drivers/staging/greybus/Documentation/sysfs/greybus1/1-2/1-2.2/1-2.2.ctrl/vendor_string
new file mode 100644
index 0000000..e69de29
--- /dev/null
+++ b/drivers/staging/greybus/Documentation/sysfs/greybus1/1-2/1-2.2/1-2.2.ctrl/vendor_string
diff --git a/drivers/staging/greybus/Documentation/sysfs/greybus1/1-5/1-5.5/1-5.5.ctrl/product_string b/drivers/staging/greybus/Documentation/sysfs/greybus1/1-5/1-5.5/1-5.5.ctrl/product_string
new file mode 100644
index 0000000..e69de29
--- /dev/null
+++ b/drivers/staging/greybus/Documentation/sysfs/greybus1/1-5/1-5.5/1-5.5.ctrl/product_string
diff --git a/drivers/staging/greybus/Documentation/sysfs/greybus1/1-5/1-5.5/1-5.5.ctrl/vendor_string b/drivers/staging/greybus/Documentation/sysfs/greybus1/1-5/1-5.5/1-5.5.ctrl/vendor_string
new file mode 100644
index 0000000..e69de29
--- /dev/null
+++ b/drivers/staging/greybus/Documentation/sysfs/greybus1/1-5/1-5.5/1-5.5.ctrl/vendor_string
diff --git a/drivers/staging/greybus/Documentation/sysfs/greybus2/2-3/2-3.3/2-3.3.ctrl/product_string b/drivers/staging/greybus/Documentation/sysfs/greybus2/2-3/2-3.3/2-3.3.ctrl/product_string
new file mode 100644
index 0000000..e69de29
--- /dev/null
+++ b/drivers/staging/greybus/Documentation/sysfs/greybus2/2-3/2-3.3/2-3.3.ctrl/product_string
diff --git a/drivers/staging/greybus/Documentation/sysfs/greybus2/2-3/2-3.3/2-3.3.ctrl/vendor_string b/drivers/staging/greybus/Documentation/sysfs/greybus2/2-3/2-3.3/2-3.3.ctrl/vendor_string
new file mode 100644
index 0000000..e69de29
--- /dev/null
+++ b/drivers/staging/greybus/Documentation/sysfs/greybus2/2-3/2-3.3/2-3.3.ctrl/vendor_string
