Documentation/admin-guide/pnp.rst

10 --------
14 services to compatible drivers.
18 ------------------
20 The Linux Plug and Play user interface provides a means to activate PnP devices
24 In addition to the standard sysfs file the following are created in each
26 - id - displays a list of support EISA IDs
27 - options - displays possible resource configurations
28 - resources - displays currently allocated resources and allows resource changes
37 this will invoke the automatic resource config system to activate the device
46 	<depnum> - the configuration number
47 	<mode> - static or dynamic
61 Suppose you need to activate the floppy disk controller.
63 1. change to the proper directory, in my case it is
75   - Notice the string "DISABLED".  This means the device is not active.
80 	Dependent: 01 - Priority acceptable
81 	    port 0x3f0-0x3f0, align 0x7, size 0x6, 16-bit address decoding
82 	    port 0x3f7-0x3f7, align 0x0, size 0x1, 16-bit address decoding
84 	    dma 2 8-bit compatible
85 	Dependent: 02 - Priority acceptable
86 	    port 0x370-0x370, align 0x7, size 0x6, 16-bit address decoding
87 	    port 0x377-0x377, align 0x0, size 0x1, 16-bit address decoding
89 	    dma 2 8-bit compatible
91 4. now activate the device::
98 	io 0x3f0-0x3f5
99 	io 0x3f7-0x3f7
113 -------------------------------
118 forwards commands to the proper protocol.  This makes writing PnP drivers
130   use this to register a new PnP protocol
133   use this function to remove a PnP protocol from the Plug and Play Layer
136   adds a PnP driver to the Plug and Play Layer
140   calls to the .add() method if you need to know how many devices bind to
149 -----------------------
155 - PNPBIOS:
157 - ISAPNP:
159 - ACPI:
163 It is meant to replace the PNPBIOS.  It is not currently supported by Linux
164 Plug and Play but it is planned to be in the near future.
171 - the ability to set resources is optional but preferred.
176   use this function to add a PnP device to the PnP layer
182   call this to initialize the PnP structure
185   call this to remove a device from the Plug and Play Layer.
190   adds an EISA ID to the list of supported IDs for the specified device
198 ---------------------------
233 2. Optionally define probe and remove functions.  It may make sense not to
279 A series of compatibility functions have been created to make it easy to convert