drivers/staging/greybus/Documentation/sysfs-bus-greybus

   1 What:           /sys/bus/greybus/device/greybusN
   2 Date:           October 2015
   3 KernelVersion:  4.XX
   4 Contact:        Greg Kroah-Hartman <greg@kroah.com>
   5 Description:
   6                 The "root" greybus device for the Greybus device tree, or bus,
   7                 where N is a dynamically assigned 1-based id.
   8
   9 What:           /sys/bus/greybus/device/N-I
  10 Date:           October 2015
  11 KernelVersion:  4.XX
  12 Contact:        Greg Kroah-Hartman <greg@kroah.com>
  13 Description:
  14                 An Interface I on the bus N, where I is the 1-byte interface
  15                 ID.
  16
  17 What:           /sys/bus/greybus/device/N-I/ddbl1_manufacturer_id
  18 Date:           October 2015
  19 KernelVersion:  4.XX
  20 Contact:        Greg Kroah-Hartman <greg@kroah.com>
  21 Description:
  22                 Unipro Device Descriptor Block Level 1 manufacturer ID for the
  23                 greybus Interface.
  24
  25 What:           /sys/bus/greybus/device/N-I/ddbl1_product_id
  26 Date:           October 2015
  27 KernelVersion:  4.XX
  28 Contact:        Greg Kroah-Hartman <greg@kroah.com>
  29 Description:
  30                 Unipro Device Descriptor Block Level 1 product ID for the
  31                 greybus Interface.
  32
  33 What:           /sys/bus/greybus/device/N-I/interface_id
  34 Date:           October 2015
  35 KernelVersion:  4.XX
  36 Contact:        Greg Kroah-Hartman <greg@kroah.com>
  37 Description:
  38                 The ID of a Greybus interface.
  39
  40 What:           /sys/bus/greybus/device/N-I/product_id
  41 Date:           October 2015
  42 KernelVersion:  4.XX
  43 Contact:        Greg Kroah-Hartman <greg@kroah.com>
  44 Description:
  45                 Product ID of a Greybus interface.
  46
  47 What:           /sys/bus/greybus/device/N-I/product_string
  48 Date:           October 2015
  49 KernelVersion:  4.XX
  50 Contact:        Greg Kroah-Hartman <greg@kroah.com>
  51 Description:
  52                 Product ID string of a Greybus interface.
  53
  54 What:           /sys/bus/greybus/device/N-I/vendor_id
  55 Date:           October 2015
  56 KernelVersion:  4.XX
  57 Contact:        Greg Kroah-Hartman <greg@kroah.com>
  58 Description:
  59                 Vendor ID of a Greybus interface.
  60
  61 What:           /sys/bus/greybus/device/N-I/vendor_string
  62 Date:           October 2015
  63 KernelVersion:  4.XX
  64 Contact:        Greg Kroah-Hartman <greg@kroah.com>
  65 Description:
  66                 Vendor ID string of a Greybus interface block.
  67
  68 What:           /sys/bus/greybus/device/N-I.B
  69 Date:           October 2015
  70 KernelVersion:  4.XX
  71 Contact:        Greg Kroah-Hartman <greg@kroah.com>
  72 Description:
  73                 A bundle B on the Interface I, B is replaced by a 1-byte
  74                 number representing the bundle.
  75
  76 What:           /sys/bus/greybus/device/N-I.B/bundle_class
  77 Date:           October 2015
  78 KernelVersion:  4.XX
  79 Contact:        Greg Kroah-Hartman <greg@kroah.com>
  80 Description:
  81                 The greybus class of the bundle B.
  82
  83 What:           /sys/bus/greybus/device/N-I.B/bundle_id
  84 Date:           October 2015
  85 KernelVersion:  4.XX
  86 Contact:        Greg Kroah-Hartman <greg@kroah.com>
  87 Description:
  88                 The interface-unique id of the bundle B.
  89
  90 What:           /sys/bus/greybus/device/N-I.B/state
  91 Date:           October 2015
  92 KernelVersion:  4.XX
  93 Contact:        Greg Kroah-Hartman <greg@kroah.com>
  94 Description:
  95                 A bundle has a state that is managed by the userspace
  96                 Endo process.  This file allows that Endo to signal
  97                 other Android HALs that the state of the bundle has
  98                 changed to a specific value.  When written to, any
  99                 process watching the file will be woken up, and the new
 100                 value can be read. It's a "poor-man's IPC", yes, but
 101                 simplifies the Android userspace code immensely.
 102
 103 What:           /sys/bus/greybus/device/N-svc
 104 Date:           October 2015
 105 KernelVersion:  4.XX
 106 Contact:        Greg Kroah-Hartman <greg@kroah.com>
 107 Description:
 108                 The singleton SVC device of bus N.
 109
 110 What:           /sys/bus/greybus/device/N-svc/ap_intf_id
 111 Date:           October 2015
 112 KernelVersion:  4.XX
 113 Contact:        Greg Kroah-Hartman <greg@kroah.com>
 114 Description:
 115                 The AP interface ID, a 1-byte non-zero integer which
 116                 defines the position of the AP module on the frame.
 117                 The interface positions are defined in the ARA
 118                 Module Developer Kit.
 119
 120 What:           /sys/bus/greybus/device/N-svc/endo_id
 121 Date:           October 2015
 122 KernelVersion:  4.XX
 123 Contact:        Greg Kroah-Hartman <greg@kroah.com>
 124 Description:
 125                 The Endo ID, which is a 2-byte hexadecimal value
 126                 defined by the Endo layout scheme, documented in
 127                 the ARA Module Developer Kit.
 128
 129 What:           /sys/bus/greybus/device/N-svc/unique_id
 130 Date:           October 2015
 131 KernelVersion:  4.XX
 132 Contact:        Greg Kroah-Hartman <greg@kroah.com>
 133 Description:
 134                 The unique ID, or serial number, of the SVC device
 135
 136 What:           /sys/bus/greybus/device/N-svc/version
 137 Date:           October 2015
 138 KernelVersion:  4.XX
 139 Contact:        Greg Kroah-Hartman <greg@kroah.com>
 140 Description:
 141                 The version number of the firmware in the SVC device.