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authorViresh Kumar2015-09-15 07:34:30 +0200
committerGreg Kroah-Hartman2015-09-17 23:52:43 +0200
commit2e49b15763cc460cabc0713e05c7d24fb892d9ad (patch)
tree1b0a45a80874285e428a1795855db1f2556c7e26 /drivers/staging/greybus/Documentation
parentgreybus: hd: remove connection-create/destroy callbacks (diff)
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greybus: Documentation: Update sysfs-bus-greybus
The file names here weren't in sync with what we have today and the updates give a better picture of the same. Signed-off-by: Viresh Kumar <viresh.kumar@linaro.org> Signed-off-by: Greg Kroah-Hartman <gregkh@google.com>
Diffstat (limited to 'drivers/staging/greybus/Documentation')
-rw-r--r--drivers/staging/greybus/Documentation/sysfs-bus-greybus117
1 files changed, 78 insertions, 39 deletions
diff --git a/drivers/staging/greybus/Documentation/sysfs-bus-greybus b/drivers/staging/greybus/Documentation/sysfs-bus-greybus
index acc405456198..b2e699ccdcd5 100644
--- a/drivers/staging/greybus/Documentation/sysfs-bus-greybus
+++ b/drivers/staging/greybus/Documentation/sysfs-bus-greybus
@@ -1,46 +1,54 @@
-What: /sys/bus/greybus/device/endo
+What: /sys/bus/greybus/device/endoE
Date: October 2015
KernelVersion: 4.XX
Contact: Greg Kroah-Hartman <greg@kroah.com>
Description:
- The "root" endo for the Greybus device tree. XXX is
- replaced with the numeric value of the endo layout
- scheme as documented in the ARA Module Developer Kit.
+ The "root" endo devices for the Greybus device tree. E
+ is replaced with a 2 byte number representing the endo,
+ mostly 0.
-What: /sys/bus/greybus/device/endo/id
+What: /sys/bus/greybus/device/endoE/id
Date: October 2015
KernelVersion: 4.XX
Contact: Greg Kroah-Hartman <greg@kroah.com>
Description:
The Endo ID, which is a 2-byte hexadecimal value
- defined by the the Endo layout scheme, documented in
+ defined by the Endo layout scheme, documented in
the ARA Module Developer Kit.
-What: /sys/bus/greybus/device/endo/ap_intf_id
+What: /sys/bus/greybus/device/endoE/ap_intf_id
Date: October 2015
KernelVersion: 4.XX
Contact: Greg Kroah-Hartman <greg@kroah.com>
Description:
- The AP interface ID, a small non-zero integer which
+ The AP interface ID, a 1-byte non-zero integer which
defines the position of the AP module on the Endo.
The interface positions are defined in the ARA
Module Developer Kit.
-What: /sys/bus/greybus/device/endo/svc/serial_number
+What: /sys/bus/greybus/device/endoE/svc/serial_number
Date: October 2015
KernelVersion: 4.XX
Contact: Greg Kroah-Hartman <greg@kroah.com>
Description:
The serial number of the SVC device
-What: /sys/bus/greybus/device/endo/svc/version
+What: /sys/bus/greybus/device/endoE/svc/version
Date: October 2015
KernelVersion: 4.XX
Contact: Greg Kroah-Hartman <greg@kroah.com>
Description:
The version number of the firmware in the SVC device.
-What: /sys/bus/greybus/device/endo/../epm
+What: /sys/bus/greybus/device/endoE:M
+Date: October 2015
+KernelVersion: 4.XX
+Contact: Greg Kroah-Hartman <greg@kroah.com>
+Description:
+ A module slot on the endoE, M is replaced by a 1-byte
+ number representing the module slot.
+
+What: /sys/bus/greybus/device/endoE:M/epm
Date: October 2015
KernelVersion: 4.XX
Contact: Greg Kroah-Hartman <greg@kroah.com>
@@ -50,7 +58,7 @@ Description:
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/.../power_control
+What: /sys/bus/greybus/device/endoE:M/power_control
Date: October 2015
KernelVersion: 4.XX
Contact: Greg Kroah-Hartman <greg@kroah.com>
@@ -60,7 +68,7 @@ Description:
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/.../present
+What: /sys/bus/greybus/device/endoE:M/present
Date: October 2015
KernelVersion: 4.XX
Contact: Greg Kroah-Hartman <greg@kroah.com>
@@ -70,63 +78,93 @@ Description:
This is read-only, 1 means a module is present, 0 means
no module is present.
-What: /sys/bus/greybus/device/.../product
+What: /sys/bus/greybus/device/endoE:M:I
+Date: October 2015
+KernelVersion: 4.XX
+Contact: Greg Kroah-Hartman <greg@kroah.com>
+Description:
+ An Interface I on the module slot M on the endoE, I is
+ replaced by a 1-byte number representing the interface.
+
+What: /sys/bus/greybus/device/endoE:M:I/device_id
+Date: October 2015
+KernelVersion: 4.XX
+Contact: Greg Kroah-Hartman <greg@kroah.com>
+Description:
+ The device ID of a Greybus interface block.
+
+What: /sys/bus/greybus/device/endoE:M:I/product
Date: October 2015
KernelVersion: 4.XX
Contact: Greg Kroah-Hartman <greg@kroah.com>
Description:
Product ID of a Greybus interface block.
-What: /sys/bus/greybus/device/.../product_string
+What: /sys/bus/greybus/device/endoE:M:I/product_string
Date: October 2015
KernelVersion: 4.XX
Contact: Greg Kroah-Hartman <greg@kroah.com>
Description:
Product ID string of a Greybus interface block.
-What: /sys/bus/greybus/device/.../unique_id
+What: /sys/bus/greybus/device/endoE:M:I/unique_id
Date: October 2015
KernelVersion: 4.XX
Contact: Greg Kroah-Hartman <greg@kroah.com>
Description:
Unique ID of a Greybus interface block.
-What: /sys/bus/greybus/device/.../vendor
+What: /sys/bus/greybus/device/endoE:M:I/vendor
Date: October 2015
KernelVersion: 4.XX
Contact: Greg Kroah-Hartman <greg@kroah.com>
Description:
Vendor ID of a Greybus interface block.
-What: /sys/bus/greybus/device/.../vendor_string
+What: /sys/bus/greybus/device/endoE:M:I/vendor_string
Date: October 2015
KernelVersion: 4.XX
Contact: Greg Kroah-Hartman <greg@kroah.com>
Description:
Vendor ID string of a Greybus interface block.
-What: /sys/bus/greybus/device/.../device_id
+What: /sys/bus/greybus/device/endoE:M:I:B
Date: October 2015
KernelVersion: 4.XX
Contact: Greg Kroah-Hartman <greg@kroah.com>
Description:
- The device ID of a Greybus interface block.
+ A bundle B on the Interface I, B is replaced by a 1-byte
+ number representing the bundle.
-What: /sys/bus/greybus/device/.../state
+What: /sys/bus/greybus/device/endoE:M:I:B/class
Date: October 2015
KernelVersion: 4.XX
Contact: Greg Kroah-Hartman <greg@kroah.com>
Description:
- The current state of a Greybus connection.
+ The greybus class of the bundle B.
- It will be one of the following values:
- 0 - invalid
- 1 - disabled
- 2 - enabled
- 3 - error
- 4 - destroying
+What: /sys/bus/greybus/device/endoE:M:I:B/state
+Date: October 2015
+KernelVersion: 4.XX
+Contact: Greg Kroah-Hartman <greg@kroah.com>
+Description:
+ A bundle has a state that is managed by the userspace
+ Endo process. This file allows that Endo to signal
+ other Android HALs that the state of the bundle has
+ changed to a specific value. When written to, any
+ process watching the file will be woken up, and the new
+ value can be read. It's a "poor-man's IPC", yes, but
+ simplifies the Android userspace code immensely.
-What: /sys/bus/greybus/device/.../ap_cport_id
+What: /sys/bus/greybus/device/endoE:M:I:B:C
+Date: October 2015
+KernelVersion: 4.XX
+Contact: Greg Kroah-Hartman <greg@kroah.com>
+Description:
+ A cport C within bundle B, C is replaced by a 2-byte
+ number representing the cport.
+
+What: /sys/bus/greybus/device/endoE:M:I:B:C/ap_cport_id
Date: October 2015
KernelVersion: 4.XX
Contact: Greg Kroah-Hartman <greg@kroah.com>
@@ -134,22 +172,23 @@ Description:
The cport ID of the AP, to which cport of the module is
connected.
-What: /sys/bus/greybus/device/.../protocol_id
+What: /sys/bus/greybus/device/endoE:M:I:B:C/protocol_id
Date: October 2015
KernelVersion: 4.XX
Contact: Greg Kroah-Hartman <greg@kroah.com>
Description:
- The protocol ID of a Greybus connection.
+ The protocol ID of a Greybus cport.
-What: /sys/bus/greybus/device/.../state
+What: /sys/bus/greybus/device/endoE:M:I:B:C/state
Date: October 2015
KernelVersion: 4.XX
Contact: Greg Kroah-Hartman <greg@kroah.com>
Description:
- A bundle has a state that is managed by the userspace
- Endo process. This file allows that Endo to signal
- other Android HALs that the state of the bundle has
- changed to a specific value. When written to, any
- process watching the file will be woken up, and the new
- value can be read. It's a "poor-man's IPC", yes, but
- simplifies the Android userspace code immensely.
+ The current state of a Greybus connection.
+
+ It will be one of the following values:
+ 0 - invalid
+ 1 - disabled
+ 2 - enabled
+ 3 - error
+ 4 - destroying