Mercurial > ecos

annotate packages/services/power/common/current/doc/power-controller.html @ 2729:74dbf4c3f2e1 after-copyright-change-20090129

Find changesets by keywords (author, files, the commit message), revision number or hash, or revset expression.
Update all copyright banners to reflect FSF ownership; fix and improve licence text.
author jlarmour
date Thu, 29 Jan 2009 17:47:46 +0000
parents e0c0827131d1
children
Ignore whitespace changes - Everywhere: Within whitespace: At end of lines:
rev   line source
2729
74dbf4c3f2e1 Update all copyright banners to reflect FSF ownership; fix and improve licence text.
jlarmour
parents: 208
diff changeset
1 <!-- Copyright (C) 2001 Free Software Foundation, Inc. -->
208
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST
jlarmour
parents:
diff changeset
2 <!-- This material may be distributed only subject to the terms -->
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST
jlarmour
parents:
diff changeset
3 <!-- and conditions set forth in the Open Publication License, v1.0 -->
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST
jlarmour
parents:
diff changeset
4 <!-- or later (the latest version is presently available at -->
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST
jlarmour
parents:
diff changeset
5 <!-- http://www.opencontent.org/openpub/). -->
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST
jlarmour
parents:
diff changeset
6 <!-- Distribution of substantively modified versions of this -->
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST
jlarmour
parents:
diff changeset
7 <!-- document is prohibited without the explicit permission of the -->
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST
jlarmour
parents:
diff changeset
8 <!-- copyright holder. -->
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST
jlarmour
parents:
diff changeset
9 <!-- Distribution of the work or derivative of the work in any -->
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST
jlarmour
parents:
diff changeset
10 <!-- standard (paper) book form is prohibited unless prior -->
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST
jlarmour
parents:
diff changeset
11 <!-- permission is obtained from the copyright holder. -->
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST
jlarmour
parents:
diff changeset
12 <HTML
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST
jlarmour
parents:
diff changeset
13 ><HEAD
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST
jlarmour
parents:
diff changeset
14 ><TITLE
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST
jlarmour
parents:
diff changeset
15 >Implementing a Power Controller</TITLE
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST
jlarmour
parents:
diff changeset
16 ><meta name="MSSmartTagsPreventParsing" content="TRUE">
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST
jlarmour
parents:
diff changeset
17 <META
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST
jlarmour
parents:
diff changeset
18 NAME="GENERATOR"
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST
jlarmour
parents:
diff changeset
19 CONTENT="Modular DocBook HTML Stylesheet Version 1.64
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST
jlarmour
parents:
diff changeset
20 "><LINK
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST
jlarmour
parents:
diff changeset
21 REL="HOME"
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST
jlarmour
parents:
diff changeset
22 TITLE="eCos Power Management Support"
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST
jlarmour
parents:
diff changeset
23 HREF="services-power.html"><LINK
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST
jlarmour
parents:
diff changeset
24 REL="PREVIOUS"
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST
jlarmour
parents:
diff changeset
25 TITLE="Attached and Detached Controllers"
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST
jlarmour
parents:
diff changeset
26 HREF="power-attached.html"></HEAD
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST
jlarmour
parents:
diff changeset
27 ><BODY
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST
jlarmour
parents:
diff changeset
28 CLASS="REFENTRY"
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST
jlarmour
parents:
diff changeset
29 BGCOLOR="#FFFFFF"
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST
jlarmour
parents:
diff changeset
30 TEXT="#000000"
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST
jlarmour
parents:
diff changeset
31 LINK="#0000FF"
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST
jlarmour
parents:
diff changeset
32 VLINK="#840084"
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST
jlarmour
parents:
diff changeset
33 ALINK="#0000FF"
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST
jlarmour
parents:
diff changeset
34 ><DIV
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST
jlarmour
parents:
diff changeset
35 CLASS="NAVHEADER"
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST
jlarmour
parents:
diff changeset
36 ><TABLE
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST
jlarmour
parents:
diff changeset
37 WIDTH="100%"
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST
jlarmour
parents:
diff changeset
38 BORDER="0"
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST
jlarmour
parents:
diff changeset
39 CELLPADDING="0"
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST
jlarmour
parents:
diff changeset
40 CELLSPACING="0"
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST
jlarmour
parents:
diff changeset
41 ><TR
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST
jlarmour
parents:
diff changeset
42 ><TH
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST
jlarmour
parents:
diff changeset
43 COLSPAN="3"
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST
jlarmour
parents:
diff changeset
44 ALIGN="center"
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST
jlarmour
parents:
diff changeset
45 >eCos Power Management Support</TH
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST
jlarmour
parents:
diff changeset
46 ></TR
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST
jlarmour
parents:
diff changeset
47 ><TR
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST
jlarmour
parents:
diff changeset
48 ><TD
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST
jlarmour
parents:
diff changeset
49 WIDTH="10%"
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST
jlarmour
parents:
diff changeset
50 ALIGN="left"
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST
jlarmour
parents:
diff changeset
51 VALIGN="bottom"
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST
jlarmour
parents:
diff changeset
52 ><A
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST
jlarmour
parents:
diff changeset
53 HREF="power-attached.html"
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST
jlarmour
parents:
diff changeset
54 >Prev</A
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST
jlarmour
parents:
diff changeset
55 ></TD
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST
jlarmour
parents:
diff changeset
56 ><TD
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST
jlarmour
parents:
diff changeset
57 WIDTH="80%"
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST
jlarmour
parents:
diff changeset
58 ALIGN="center"
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST
jlarmour
parents:
diff changeset
59 VALIGN="bottom"
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST
jlarmour
parents:
diff changeset
60 ></TD
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST
jlarmour
parents:
diff changeset
61 ><TD
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST
jlarmour
parents:
diff changeset
62 WIDTH="10%"
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST
jlarmour
parents:
diff changeset
63 ALIGN="right"
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST
jlarmour
parents:
diff changeset
64 VALIGN="bottom"
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST
jlarmour
parents:
diff changeset
65 >&nbsp;</TD
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST
jlarmour
parents:
diff changeset
66 ></TR
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST
jlarmour
parents:
diff changeset
67 ></TABLE
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST
jlarmour
parents:
diff changeset
68 ><HR
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST
jlarmour
parents:
diff changeset
69 ALIGN="LEFT"
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST
jlarmour
parents:
diff changeset
70 WIDTH="100%"></DIV
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST
jlarmour
parents:
diff changeset
71 ><H1
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST
jlarmour
parents:
diff changeset
72 ><A
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST
jlarmour
parents:
diff changeset
73 NAME="POWER-CONTROLLER"
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST
jlarmour
parents:
diff changeset
74 >Implementing a Power Controller</A
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST
jlarmour
parents:
diff changeset
75 ></H1
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST
jlarmour
parents:
diff changeset
76 ><DIV
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST
jlarmour
parents:
diff changeset
77 CLASS="REFNAMEDIV"
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST
jlarmour
parents:
diff changeset
78 ><A
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST
jlarmour
parents:
diff changeset
79 NAME="AEN355"
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST
jlarmour
parents:
diff changeset
80 ></A
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST
jlarmour
parents:
diff changeset
81 ><H2
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST
jlarmour
parents:
diff changeset
82 >Name</H2
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST
jlarmour
parents:
diff changeset
83 >Implementing a Power Controller&nbsp;--&nbsp;adding power management support to device drivers and
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST
jlarmour
parents:
diff changeset
84 other packages</DIV
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST
jlarmour
parents:
diff changeset
85 ><DIV
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST
jlarmour
parents:
diff changeset
86 CLASS="REFSECT1"
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST
jlarmour
parents:
diff changeset
87 ><A
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST
jlarmour
parents:
diff changeset
88 NAME="AEN358"
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST
jlarmour
parents:
diff changeset
89 ></A
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST
jlarmour
parents:
diff changeset
90 ><H2
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST
jlarmour
parents:
diff changeset
91 >Implementing a Power Controller</H2
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST
jlarmour
parents:
diff changeset
92 ><P
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST
jlarmour
parents:
diff changeset
93 >A system will have some number of power controllers. Usually there
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST
jlarmour
parents:
diff changeset
94 will be one power controller for the cpu,
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST
jlarmour
parents:
diff changeset
95 <TT
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST
jlarmour
parents:
diff changeset
96 CLASS="VARNAME"
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST
jlarmour
parents:
diff changeset
97 >power_controller_cpu</TT
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST
jlarmour
parents:
diff changeset
98 >, typically provided by one of
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST
jlarmour
parents:
diff changeset
99 the HAL packages and responsible for managing the processor itself and
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST
jlarmour
parents:
diff changeset
100 associated critical components such as memory. Some or all of the
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST
jlarmour
parents:
diff changeset
101 device drivers will provide power controllers, allowing the power
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST
jlarmour
parents:
diff changeset
102 consumption of the associated devices to be controlled. There may be
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST
jlarmour
parents:
diff changeset
103 some arbitrary number of other controllers present in the system. The
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST
jlarmour
parents:
diff changeset
104 power management package does not impose any restrictions on the
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST
jlarmour
parents:
diff changeset
105 number or nature of the power controllers in the system, other than
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST
jlarmour
parents:
diff changeset
106 insisting that at most one <TT
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST
jlarmour
parents:
diff changeset
107 CLASS="VARNAME"
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST
jlarmour
parents:
diff changeset
108 >power_controller_cpu</TT
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST
jlarmour
parents:
diff changeset
109 > be
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST
jlarmour
parents:
diff changeset
110 provided.</P
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST
jlarmour
parents:
diff changeset
111 ><P
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST
jlarmour
parents:
diff changeset
112 >Each power controller involves a single data structure of type
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST
jlarmour
parents:
diff changeset
113 <SPAN
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST
jlarmour
parents:
diff changeset
114 CLASS="STRUCTNAME"
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST
jlarmour
parents:
diff changeset
115 >PowerController</SPAN
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST
jlarmour
parents:
diff changeset
116 >, defined in the header file
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST
jlarmour
parents:
diff changeset
117 <TT
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST
jlarmour
parents:
diff changeset
118 CLASS="FILENAME"
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST
jlarmour
parents:
diff changeset
119 >cyg/power/power.h</TT
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST
jlarmour
parents:
diff changeset
120 >. These data
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST
jlarmour
parents:
diff changeset
121 structures should all be placed in the table
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST
jlarmour
parents:
diff changeset
122 <TT
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST
jlarmour
parents:
diff changeset
123 CLASS="LITERAL"
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST
jlarmour
parents:
diff changeset
124 >__POWER__</TT
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST
jlarmour
parents:
diff changeset
125 >, so that the power management package and
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST
jlarmour
parents:
diff changeset
126 other code can easily locate all the controllers in the system. This
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST
jlarmour
parents:
diff changeset
127 table is constructed at link-time, avoiding code-size or run-time
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST
jlarmour
parents:
diff changeset
128 overheads. To facilitate this the package provides two macros which
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST
jlarmour
parents:
diff changeset
129 should be used to define a power controller,
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST
jlarmour
parents:
diff changeset
130 <TT
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST
jlarmour
parents:
diff changeset
131 CLASS="LITERAL"
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST
jlarmour
parents:
diff changeset
132 >POWER_CONTROLLER()</TT
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST
jlarmour
parents:
diff changeset
133 > and
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST
jlarmour
parents:
diff changeset
134 <TT
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST
jlarmour
parents:
diff changeset
135 CLASS="LITERAL"
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST
jlarmour
parents:
diff changeset
136 >POWER_CONTROLLER_CPU()</TT
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST
jlarmour
parents:
diff changeset
137 >.</P
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST
jlarmour
parents:
diff changeset
138 ><P
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST
jlarmour
parents:
diff changeset
139 >The macro <TT
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST
jlarmour
parents:
diff changeset
140 CLASS="LITERAL"
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST
jlarmour
parents:
diff changeset
141 >POWER_CONTROLLER</TT
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST
jlarmour
parents:
diff changeset
142 > takes four arguments:</P
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST
jlarmour
parents:
diff changeset
143 ><P
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST
jlarmour
parents:
diff changeset
144 ></P
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST
jlarmour
parents:
diff changeset
145 ><OL
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST
jlarmour
parents:
diff changeset
146 TYPE="1"
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST
jlarmour
parents:
diff changeset
147 ><LI
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST
jlarmour
parents:
diff changeset
148 ><P
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST
jlarmour
parents:
diff changeset
149 >A variable name. This can be used to access the power controller
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST
jlarmour
parents:
diff changeset
150 directly, as well as via the table.</P
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST
jlarmour
parents:
diff changeset
151 ></LI
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST
jlarmour
parents:
diff changeset
152 ><LI
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST
jlarmour
parents:
diff changeset
153 ><P
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST
jlarmour
parents:
diff changeset
154 >A priority. The table of power controllers is sorted, such that power
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST
jlarmour
parents:
diff changeset
155 controllers with a numerically lower priority come earlier in the
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST
jlarmour
parents:
diff changeset
156 table. The special controller <TT
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST
jlarmour
parents:
diff changeset
157 CLASS="VARNAME"
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST
jlarmour
parents:
diff changeset
158 >power_controller_cpu</TT
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST
jlarmour
parents:
diff changeset
159 >
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST
jlarmour
parents:
diff changeset
160 always comes at the end of the table. When moving from a high-power
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST
jlarmour
parents:
diff changeset
161 mode to a lower-powered mode, the power management package iterates
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST
jlarmour
parents:
diff changeset
162 through the table from front to back. When moving to a higher-powered
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST
jlarmour
parents:
diff changeset
163 mode the reverse direction is used. The intention is that the power
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST
jlarmour
parents:
diff changeset
164 controller for a software-only package such as a TCP/IP stack should
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST
jlarmour
parents:
diff changeset
165 appear near the start of the table, whereas the controllers for the
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST
jlarmour
parents:
diff changeset
166 ethernet and similar devices would be near the end of the table. Hence
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST
jlarmour
parents:
diff changeset
167 when the policy module initiates a mode change to a lower-powered mode
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST
jlarmour
parents:
diff changeset
168 the TCP/IP stack gets a chance to cancel this mode change, before the
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST
jlarmour
parents:
diff changeset
169 devices it depends on are powered down. Similarly when moving to a
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST
jlarmour
parents:
diff changeset
170 higher-powered mode the devices will be re-activated before any
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST
jlarmour
parents:
diff changeset
171 software that depends on those devices.</P
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST
jlarmour
parents:
diff changeset
172 ><P
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST
jlarmour
parents:
diff changeset
173 >The header file <TT
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST
jlarmour
parents:
diff changeset
174 CLASS="FILENAME"
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST
jlarmour
parents:
diff changeset
175 >cyg/power/power.h</TT
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST
jlarmour
parents:
diff changeset
176 > defines three
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST
jlarmour
parents:
diff changeset
177 priorities <TT
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST
jlarmour
parents:
diff changeset
178 CLASS="LITERAL"
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST
jlarmour
parents:
diff changeset
179 >PowerPri_Early</TT
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST
jlarmour
parents:
diff changeset
180 >,
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST
jlarmour
parents:
diff changeset
181 <TT
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST
jlarmour
parents:
diff changeset
182 CLASS="LITERAL"
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST
jlarmour
parents:
diff changeset
183 >PowerPri_Typical</TT
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST
jlarmour
parents:
diff changeset
184 > and
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST
jlarmour
parents:
diff changeset
185 <TT
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST
jlarmour
parents:
diff changeset
186 CLASS="LITERAL"
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST
jlarmour
parents:
diff changeset
187 >PowerPri_Late</TT
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST
jlarmour
parents:
diff changeset
188 >. For most controllers one of these
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST
jlarmour
parents:
diff changeset
189 priorities, possibly with a small number added or subtracted, will
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST
jlarmour
parents:
diff changeset
190 give sufficient control. If an application developer is uncertain
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST
jlarmour
parents:
diff changeset
191 about the relative priorities of the various controllers, a simple
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST
jlarmour
parents:
diff changeset
192 <A
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST
jlarmour
parents:
diff changeset
193 HREF="power-info.html#POWER-INFO-IDS"
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST
jlarmour
parents:
diff changeset
194 >test program</A
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST
jlarmour
parents:
diff changeset
195 > that iterates over
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST
jlarmour
parents:
diff changeset
196 the table will quickly eliminate any confusion.</P
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST
jlarmour
parents:
diff changeset
197 ></LI
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST
jlarmour
parents:
diff changeset
198 ><LI
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST
jlarmour
parents:
diff changeset
199 ><P
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST
jlarmour
parents:
diff changeset
200 >A constant string identifier. If the system has been configured
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST
jlarmour
parents:
diff changeset
201 without support for such identifiers
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST
jlarmour
parents:
diff changeset
202 (<TT
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST
jlarmour
parents:
diff changeset
203 CLASS="VARNAME"
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST
jlarmour
parents:
diff changeset
204 >CYGIMP_POWER_PROVIDE_STRINGS</TT
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST
jlarmour
parents:
diff changeset
205 >) then this identifer
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST
jlarmour
parents:
diff changeset
206 will be discarded at compile-time. Otherwise it will be made available
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST
jlarmour
parents:
diff changeset
207 to higher-level code using the function
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST
jlarmour
parents:
diff changeset
208 <TT
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST
jlarmour
parents:
diff changeset
209 CLASS="FUNCTION"
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST
jlarmour
parents:
diff changeset
210 >power_get_controller_id</TT
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST
jlarmour
parents:
diff changeset
211 >. </P
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST
jlarmour
parents:
diff changeset
212 ></LI
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST
jlarmour
parents:
diff changeset
213 ><LI
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST
jlarmour
parents:
diff changeset
214 ><P
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST
jlarmour
parents:
diff changeset
215 >A function pointer. This will be invoked to perform actual mode
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST
jlarmour
parents:
diff changeset
216 changes, as described below.</P
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST
jlarmour
parents:
diff changeset
217 ></LI
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST
jlarmour
parents:
diff changeset
218 ></OL
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST
jlarmour
parents:
diff changeset
219 ><P
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST
jlarmour
parents:
diff changeset
220 >A typical example of the use of the
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST
jlarmour
parents:
diff changeset
221 <TT
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST
jlarmour
parents:
diff changeset
222 CLASS="LITERAL"
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST
jlarmour
parents:
diff changeset
223 >POWER_CONTROLLER</TT
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST
jlarmour
parents:
diff changeset
224 > macro would be as follows:</P
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST
jlarmour
parents:
diff changeset
225 ><TABLE
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST
jlarmour
parents:
diff changeset
226 BORDER="0"
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST
jlarmour
parents:
diff changeset
227 BGCOLOR="#E0E0E0"
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST
jlarmour
parents:
diff changeset
228 WIDTH="100%"
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST
jlarmour
parents:
diff changeset
229 ><TR
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST
jlarmour
parents:
diff changeset
230 ><TD
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST
jlarmour
parents:
diff changeset
231 ><PRE
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST
jlarmour
parents:
diff changeset
232 CLASS="PROGRAMLISTING"
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST
jlarmour
parents:
diff changeset
233 >#include &lt;pkgconf/system.h&gt;
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST
jlarmour
parents:
diff changeset
234
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST
jlarmour
parents:
diff changeset
235 #ifdef CYGPKG_POWER
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST
jlarmour
parents:
diff changeset
236 # include &lt;cyg/power/power.h&gt;
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST
jlarmour
parents:
diff changeset
237
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST
jlarmour
parents:
diff changeset
238 static void
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST
jlarmour
parents:
diff changeset
239 xyzzy_device_power_mode_change(
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST
jlarmour
parents:
diff changeset
240 PowerController* controller,
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST
jlarmour
parents:
diff changeset
241 PowerMode desired_mode,
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST
jlarmour
parents:
diff changeset
242 PowerModeChange change)
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST
jlarmour
parents:
diff changeset
243 {
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST
jlarmour
parents:
diff changeset
244 // Do the work
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST
jlarmour
parents:
diff changeset
245 }
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST
jlarmour
parents:
diff changeset
246
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST
jlarmour
parents:
diff changeset
247 static POWER_CONTROLLER(xyzzy_power_controller, \
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST
jlarmour
parents:
diff changeset
248 PowerPri_Late, \
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST
jlarmour
parents:
diff changeset
249 "xyzzy device", \
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST
jlarmour
parents:
diff changeset
250 &amp;xyzzy_device_power_mode_change);
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST
jlarmour
parents:
diff changeset
251 #endif</PRE
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST
jlarmour
parents:
diff changeset
252 ></TD
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST
jlarmour
parents:
diff changeset
253 ></TR
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST
jlarmour
parents:
diff changeset
254 ></TABLE
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST
jlarmour
parents:
diff changeset
255 ><P
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST
jlarmour
parents:
diff changeset
256 >This creates a variable <TT
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST
jlarmour
parents:
diff changeset
257 CLASS="VARNAME"
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST
jlarmour
parents:
diff changeset
258 >xyzzy_power_controller</TT
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST
jlarmour
parents:
diff changeset
259 >,
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST
jlarmour
parents:
diff changeset
260 which is a power controller data structure that will end up near the
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST
jlarmour
parents:
diff changeset
261 end of the table of power controllers. Higher-level code can
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST
jlarmour
parents:
diff changeset
262 iterate through this table and report the string <TT
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST
jlarmour
parents:
diff changeset
263 CLASS="LITERAL"
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST
jlarmour
parents:
diff changeset
264 >"xyzzy
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST
jlarmour
parents:
diff changeset
265 device"</TT
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST
jlarmour
parents:
diff changeset
266 > to the user. Whenever there is a mode change
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST
jlarmour
parents:
diff changeset
267 operation that affects this controller, the function
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST
jlarmour
parents:
diff changeset
268 <TT
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST
jlarmour
parents:
diff changeset
269 CLASS="FUNCTION"
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST
jlarmour
parents:
diff changeset
270 >xyzzy_device_power_mode_change</TT
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST
jlarmour
parents:
diff changeset
271 > will be invoked.
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST
jlarmour
parents:
diff changeset
272 The variable is declared static so this controller cannot be
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST
jlarmour
parents:
diff changeset
273 manipulated by name in any other code. Alternatively, if the variable
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST
jlarmour
parents:
diff changeset
274 had not been declared static other code could manipulate this
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST
jlarmour
parents:
diff changeset
275 controller by name as well as through the table, especially if the
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST
jlarmour
parents:
diff changeset
276 package for the xyzzy device driver explicitly declared this
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST
jlarmour
parents:
diff changeset
277 variable in an exported header file. Obviously exporting the variable
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST
jlarmour
parents:
diff changeset
278 involves a slight risk of a name clash at link time.</P
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST
jlarmour
parents:
diff changeset
279 ><P
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST
jlarmour
parents:
diff changeset
280 >The above code explicitly checks for the presence of the power
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST
jlarmour
parents:
diff changeset
281 management package before including that package's header file or
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST
jlarmour
parents:
diff changeset
282 providing any related functionality. Since power management
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST
jlarmour
parents:
diff changeset
283 functionality is optional, such checks are recommended.</P
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST
jlarmour
parents:
diff changeset
284 ><P
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST
jlarmour
parents:
diff changeset
285 >The macro <TT
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST
jlarmour
parents:
diff changeset
286 CLASS="LITERAL"
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST
jlarmour
parents:
diff changeset
287 >POWER_CONTROLLER_CPU</TT
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST
jlarmour
parents:
diff changeset
288 > only takes two
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST
jlarmour
parents:
diff changeset
289 arguments, a string identifier and a mode change function pointer.
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST
jlarmour
parents:
diff changeset
290 This macro always instantiates a variable
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST
jlarmour
parents:
diff changeset
291 <TT
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST
jlarmour
parents:
diff changeset
292 CLASS="VARNAME"
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST
jlarmour
parents:
diff changeset
293 >power_controller_cpu</TT
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST
jlarmour
parents:
diff changeset
294 > so there is no need to provide
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST
jlarmour
parents:
diff changeset
295 a variable name. The resulting power controller structure always
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST
jlarmour
parents:
diff changeset
296 appears at the end of the table, so there is no need to specify a
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST
jlarmour
parents:
diff changeset
297 priority. Typical usage of the <TT
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST
jlarmour
parents:
diff changeset
298 CLASS="LITERAL"
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST
jlarmour
parents:
diff changeset
299 >POWER_CONTROLLER_CPU</TT
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST
jlarmour
parents:
diff changeset
300 >
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST
jlarmour
parents:
diff changeset
301 macro would be:</P
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST
jlarmour
parents:
diff changeset
302 ><TABLE
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST
jlarmour
parents:
diff changeset
303 BORDER="0"
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST
jlarmour
parents:
diff changeset
304 BGCOLOR="#E0E0E0"
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST
jlarmour
parents:
diff changeset
305 WIDTH="100%"
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST
jlarmour
parents:
diff changeset
306 ><TR
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST
jlarmour
parents:
diff changeset
307 ><TD
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST
jlarmour
parents:
diff changeset
308 ><PRE
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST
jlarmour
parents:
diff changeset
309 CLASS="PROGRAMLISTING"
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST
jlarmour
parents:
diff changeset
310 >static void
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST
jlarmour
parents:
diff changeset
311 wumpus_processor_power_mode_change(
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST
jlarmour
parents:
diff changeset
312 PowerController* controller,
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST
jlarmour
parents:
diff changeset
313 PowerMode desired_mode,
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST
jlarmour
parents:
diff changeset
314 PowerModeChange change)
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST
jlarmour
parents:
diff changeset
315 {
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST
jlarmour
parents:
diff changeset
316 // Do the work
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST
jlarmour
parents:
diff changeset
317 }
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST
jlarmour
parents:
diff changeset
318
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST
jlarmour
parents:
diff changeset
319 POWER_CONTROLLER_CPU("wumpus processor", \
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST
jlarmour
parents:
diff changeset
320 &amp;wumpus_processor_power_mode_change);</PRE
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST
jlarmour
parents:
diff changeset
321 ></TD
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST
jlarmour
parents:
diff changeset
322 ></TR
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST
jlarmour
parents:
diff changeset
323 ></TABLE
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST
jlarmour
parents:
diff changeset
324 ><P
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST
jlarmour
parents:
diff changeset
325 >This defines a power controller structure
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST
jlarmour
parents:
diff changeset
326 <TT
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST
jlarmour
parents:
diff changeset
327 CLASS="VARNAME"
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST
jlarmour
parents:
diff changeset
328 >power_controller_cpu</TT
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST
jlarmour
parents:
diff changeset
329 >. It should not be declared
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST
jlarmour
parents:
diff changeset
330 static since higher-level code may well want to manipulate the cpu's
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST
jlarmour
parents:
diff changeset
331 power mode directly, and the variable is declared by the power
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST
jlarmour
parents:
diff changeset
332 management package's header file.</P
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST
jlarmour
parents:
diff changeset
333 ><P
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST
jlarmour
parents:
diff changeset
334 >Some care has to be taken to ensure that the power controllers
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST
jlarmour
parents:
diff changeset
335 actually end up in the final executable. If a power controller
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST
jlarmour
parents:
diff changeset
336 variable ends up in an ordinary library and is never referenced
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST
jlarmour
parents:
diff changeset
337 directly then typically the linker will believe that the variable is
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST
jlarmour
parents:
diff changeset
338 not needed and it will not end up in the executable. For eCos packages
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST
jlarmour
parents:
diff changeset
339 this can be achieved in the CDL, by specifying that the containing
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST
jlarmour
parents:
diff changeset
340 source file should end up in <TT
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST
jlarmour
parents:
diff changeset
341 CLASS="FILENAME"
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST
jlarmour
parents:
diff changeset
342 >libextras.a</TT
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST
jlarmour
parents:
diff changeset
343 > rather
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST
jlarmour
parents:
diff changeset
344 than the default <TT
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST
jlarmour
parents:
diff changeset
345 CLASS="FILENAME"
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST
jlarmour
parents:
diff changeset
346 >libtarget.a</TT
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST
jlarmour
parents:
diff changeset
347 >:</P
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST
jlarmour
parents:
diff changeset
348 ><TABLE
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST
jlarmour
parents:
diff changeset
349 BORDER="0"
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST
jlarmour
parents:
diff changeset
350 BGCOLOR="#E0E0E0"
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST
jlarmour
parents:
diff changeset
351 WIDTH="100%"
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST
jlarmour
parents:
diff changeset
352 ><TR
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST
jlarmour
parents:
diff changeset
353 ><TD
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST
jlarmour
parents:
diff changeset
354 ><PRE
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST
jlarmour
parents:
diff changeset
355 CLASS="PROGRAMLISTING"
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST
jlarmour
parents:
diff changeset
356 >cdl_package CYGPKG_HAL_WUMPUS_ARCH {
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST
jlarmour
parents:
diff changeset
357 &#8230;
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST
jlarmour
parents:
diff changeset
358 compile -library=libextras.a data.c
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST
jlarmour
parents:
diff changeset
359 }</PRE
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST
jlarmour
parents:
diff changeset
360 ></TD
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST
jlarmour
parents:
diff changeset
361 ></TR
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST
jlarmour
parents:
diff changeset
362 ></TABLE
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST
jlarmour
parents:
diff changeset
363 ><P
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST
jlarmour
parents:
diff changeset
364 >If the file <TT
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST
jlarmour
parents:
diff changeset
365 CLASS="FILENAME"
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST
jlarmour
parents:
diff changeset
366 >data.c</TT
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST
jlarmour
parents:
diff changeset
367 > instantiates a power
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST
jlarmour
parents:
diff changeset
368 controller this is now guaranteed to end up in the final executable,
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST
jlarmour
parents:
diff changeset
369 as intended. Typically HAL and device driver packages will already
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST
jlarmour
parents:
diff changeset
370 have some data that must not be eliminated by the linker, so they will
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST
jlarmour
parents:
diff changeset
371 already contain a file that gets built into
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST
jlarmour
parents:
diff changeset
372 <TT
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST
jlarmour
parents:
diff changeset
373 CLASS="FILENAME"
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST
jlarmour
parents:
diff changeset
374 >libextras.a</TT
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST
jlarmour
parents:
diff changeset
375 >. For power controllers defined inside
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST
jlarmour
parents:
diff changeset
376 application code it is important that the power controllers end up in
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST
jlarmour
parents:
diff changeset
377 <TT
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST
jlarmour
parents:
diff changeset
378 CLASS="FILENAME"
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST
jlarmour
parents:
diff changeset
379 >.o</TT
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST
jlarmour
parents:
diff changeset
380 > object files rather than in
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST
jlarmour
parents:
diff changeset
381 <TT
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST
jlarmour
parents:
diff changeset
382 CLASS="FILENAME"
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST
jlarmour
parents:
diff changeset
383 >.a</TT
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST
jlarmour
parents:
diff changeset
384 > library archive files.</P
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST
jlarmour
parents:
diff changeset
385 ><P
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST
jlarmour
parents:
diff changeset
386 >All the real work of a power controller is done by the mode change
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST
jlarmour
parents:
diff changeset
387 function. If the power management package has been configured to use a
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST
jlarmour
parents:
diff changeset
388 separate thread then this mode change function will be invoked by that
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST
jlarmour
parents:
diff changeset
389 thread (except for the special case of <A
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST
jlarmour
parents:
diff changeset
390 HREF="power-change.html#POWER-CHANGE-CONTROLLER-NOW"
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST
jlarmour
parents:
diff changeset
391 ><TT
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST
jlarmour
parents:
diff changeset
392 CLASS="FUNCTION"
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST
jlarmour
parents:
diff changeset
393 >power_set_controller_mode_now</TT
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST
jlarmour
parents:
diff changeset
394 ></A
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST
jlarmour
parents:
diff changeset
395 >).
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST
jlarmour
parents:
diff changeset
396 If no separate thread is used then the mode change function will be
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST
jlarmour
parents:
diff changeset
397 invoked directly by <TT
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST
jlarmour
parents:
diff changeset
398 CLASS="FUNCTION"
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST
jlarmour
parents:
diff changeset
399 >power_set_mode</TT
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST
jlarmour
parents:
diff changeset
400 > or
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST
jlarmour
parents:
diff changeset
401 <TT
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST
jlarmour
parents:
diff changeset
402 CLASS="FUNCTION"
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST
jlarmour
parents:
diff changeset
403 >power_set_controller_mode</TT
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST
jlarmour
parents:
diff changeset
404 >.</P
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST
jlarmour
parents:
diff changeset
405 ><P
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST
jlarmour
parents:
diff changeset
406 >The mode change function will be invoked with three arguments. The
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST
jlarmour
parents:
diff changeset
407 first argument identifies the power controller. Usually this argument
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST
jlarmour
parents:
diff changeset
408 is not actually required since a given mode change function will only
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST
jlarmour
parents:
diff changeset
409 ever be invoked for a single power controller. For example,
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST
jlarmour
parents:
diff changeset
410 <TT
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST
jlarmour
parents:
diff changeset
411 CLASS="FUNCTION"
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST
jlarmour
parents:
diff changeset
412 >xyzzy_device_power_mode_change</TT
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST
jlarmour
parents:
diff changeset
413 > will only ever be
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST
jlarmour
parents:
diff changeset
414 used in conjunction with <TT
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST
jlarmour
parents:
diff changeset
415 CLASS="VARNAME"
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST
jlarmour
parents:
diff changeset
416 >xyzzy_power_controller</TT
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST
jlarmour
parents:
diff changeset
417 >.
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST
jlarmour
parents:
diff changeset
418 However there may be some packages which contain multiple controllers,
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST
jlarmour
parents:
diff changeset
419 all of which can share a single mode change function, and in that case
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST
jlarmour
parents:
diff changeset
420 it is essential to identify the specific controller. The second
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST
jlarmour
parents:
diff changeset
421 argument specifies the mode the controller should switch to, if
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST
jlarmour
parents:
diff changeset
422 possible: it will be one of <TT
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST
jlarmour
parents:
diff changeset
423 CLASS="LITERAL"
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST
jlarmour
parents:
diff changeset
424 >PowerMode_Active</TT
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST
jlarmour
parents:
diff changeset
425 >,
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST
jlarmour
parents:
diff changeset
426 <TT
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST
jlarmour
parents:
diff changeset
427 CLASS="LITERAL"
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST
jlarmour
parents:
diff changeset
428 >PowerMode_Idle</TT
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST
jlarmour
parents:
diff changeset
429 >, <TT
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST
jlarmour
parents:
diff changeset
430 CLASS="LITERAL"
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST
jlarmour
parents:
diff changeset
431 >PowerMode_Sleep</TT
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST
jlarmour
parents:
diff changeset
432 >
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST
jlarmour
parents:
diff changeset
433 or <TT
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST
jlarmour
parents:
diff changeset
434 CLASS="LITERAL"
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST
jlarmour
parents:
diff changeset
435 >PowerMode_Off</TT
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST
jlarmour
parents:
diff changeset
436 >. The final argument will be one of
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST
jlarmour
parents:
diff changeset
437 <TT
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST
jlarmour
parents:
diff changeset
438 CLASS="LITERAL"
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST
jlarmour
parents:
diff changeset
439 >PowerModeChange_Controller</TT
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST
jlarmour
parents:
diff changeset
440 >,
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST
jlarmour
parents:
diff changeset
441 PowerModeChange_ControllerNow, or
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST
jlarmour
parents:
diff changeset
442 <TT
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST
jlarmour
parents:
diff changeset
443 CLASS="LITERAL"
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST
jlarmour
parents:
diff changeset
444 >PowerModeChange_Global</TT
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST
jlarmour
parents:
diff changeset
445 >, and identifies the call
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST
jlarmour
parents:
diff changeset
446 that caused this invocation. For example, if the mode change function
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST
jlarmour
parents:
diff changeset
447 was invoked because of a call to <TT
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST
jlarmour
parents:
diff changeset
448 CLASS="FUNCTION"
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST
jlarmour
parents:
diff changeset
449 >power_set_mode</TT
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST
jlarmour
parents:
diff changeset
450 >
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST
jlarmour
parents:
diff changeset
451 then this argument will be <TT
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST
jlarmour
parents:
diff changeset
452 CLASS="LITERAL"
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST
jlarmour
parents:
diff changeset
453 >PowerModeChange_Global</TT
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST
jlarmour
parents:
diff changeset
454 >.
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST
jlarmour
parents:
diff changeset
455 It is up to each controller to decide how to interpret this final
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST
jlarmour
parents:
diff changeset
456 argument. A typical controller might reject a global request to switch
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST
jlarmour
parents:
diff changeset
457 to <SPAN
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST
jlarmour
parents:
diff changeset
458 CLASS="TYPE"
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST
jlarmour
parents:
diff changeset
459 >off</SPAN
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST
jlarmour
parents:
diff changeset
460 > mode if the associated device is still busy, but
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST
jlarmour
parents:
diff changeset
461 if the request was aimed specifically at this controller then it could
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST
jlarmour
parents:
diff changeset
462 instead abort any current I/O operations and switch off the device.</P
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST
jlarmour
parents:
diff changeset
463 ><P
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST
jlarmour
parents:
diff changeset
464 >The <SPAN
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST
jlarmour
parents:
diff changeset
465 CLASS="STRUCTNAME"
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST
jlarmour
parents:
diff changeset
466 >PowerController</SPAN
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST
jlarmour
parents:
diff changeset
467 > data structure contains
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST
jlarmour
parents:
diff changeset
468 one field, <TT
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST
jlarmour
parents:
diff changeset
469 CLASS="STRUCTFIELD"
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST
jlarmour
parents:
diff changeset
470 ><I
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST
jlarmour
parents:
diff changeset
471 >mode</I
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST
jlarmour
parents:
diff changeset
472 ></TT
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST
jlarmour
parents:
diff changeset
473 >, that needs to be updated
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST
jlarmour
parents:
diff changeset
474 by the power mode change function. At all times it should indicate the
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST
jlarmour
parents:
diff changeset
475 current mode for this controller. When a mode change is requested the
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST
jlarmour
parents:
diff changeset
476 desired mode is passed as the second argument. The exact operation of
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST
jlarmour
parents:
diff changeset
477 the power mode change function depends very much on what is being
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST
jlarmour
parents:
diff changeset
478 controlled and the current circumstances, but some guidelines are
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST
jlarmour
parents:
diff changeset
479 possible:</P
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST
jlarmour
parents:
diff changeset
480 ><P
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST
jlarmour
parents:
diff changeset
481 ></P
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST
jlarmour
parents:
diff changeset
482 ><OL
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST
jlarmour
parents:
diff changeset
483 TYPE="1"
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST
jlarmour
parents:
diff changeset
484 ><LI
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST
jlarmour
parents:
diff changeset
485 ><P
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST
jlarmour
parents:
diff changeset
486 >If the request can be satisfied without obvious detriment, do so and
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST
jlarmour
parents:
diff changeset
487 update the <TT
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST
jlarmour
parents:
diff changeset
488 CLASS="STRUCTFIELD"
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST
jlarmour
parents:
diff changeset
489 ><I
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST
jlarmour
parents:
diff changeset
490 >mode</I
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST
jlarmour
parents:
diff changeset
491 ></TT
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST
jlarmour
parents:
diff changeset
492 > field. Reducing the power
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST
jlarmour
parents:
diff changeset
493 consumption of a device that is not currently being used is generally
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST
jlarmour
parents:
diff changeset
494 harmless.</P
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST
jlarmour
parents:
diff changeset
495 ></LI
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST
jlarmour
parents:
diff changeset
496 ><LI
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST
jlarmour
parents:
diff changeset
497 ><P
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST
jlarmour
parents:
diff changeset
498 >If a request is a no-op, for example if the system is switching
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST
jlarmour
parents:
diff changeset
499 from <SPAN
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST
jlarmour
parents:
diff changeset
500 CLASS="TYPE"
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST
jlarmour
parents:
diff changeset
501 >idle</SPAN
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST
jlarmour
parents:
diff changeset
502 > to <SPAN
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST
jlarmour
parents:
diff changeset
503 CLASS="TYPE"
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST
jlarmour
parents:
diff changeset
504 >sleep</SPAN
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST
jlarmour
parents:
diff changeset
505 > mode and the controller
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST
jlarmour
parents:
diff changeset
506 does not distinguish between these modes, simply act as if the request
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST
jlarmour
parents:
diff changeset
507 was satisfied.</P
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST
jlarmour
parents:
diff changeset
508 ></LI
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST
jlarmour
parents:
diff changeset
509 ><LI
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST
jlarmour
parents:
diff changeset
510 ><P
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST
jlarmour
parents:
diff changeset
511 >If a request is felt to be unsafe, for example shutting down a
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST
jlarmour
parents:
diff changeset
512 device that is still in use, then the controller may decide
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST
jlarmour
parents:
diff changeset
513 to reject this request. This is especially true if the request was a
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST
jlarmour
parents:
diff changeset
514 global mode change as opposed to one intended specifically for this
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST
jlarmour
parents:
diff changeset
515 controller: in the latter case the policy module should be given due
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST
jlarmour
parents:
diff changeset
516 deference. There are a number of ways in which a request can be
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST
jlarmour
parents:
diff changeset
517 rejected:</P
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST
jlarmour
parents:
diff changeset
518 ><P
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST
jlarmour
parents:
diff changeset
519 ></P
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST
jlarmour
parents:
diff changeset
520 ><OL
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST
jlarmour
parents:
diff changeset
521 TYPE="a"
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST
jlarmour
parents:
diff changeset
522 ><LI
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST
jlarmour
parents:
diff changeset
523 ><P
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST
jlarmour
parents:
diff changeset
524 >If the request cannot be satisfied immediately but may be feasible in
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST
jlarmour
parents:
diff changeset
525 a short while, leave the <TT
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST
jlarmour
parents:
diff changeset
526 CLASS="STRUCTFIELD"
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST
jlarmour
parents:
diff changeset
527 ><I
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST
jlarmour
parents:
diff changeset
528 >mode</I
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST
jlarmour
parents:
diff changeset
529 ></TT
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST
jlarmour
parents:
diff changeset
530 > field
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST
jlarmour
parents:
diff changeset
531 unchanged. Higher-level code in the policy module can interpret this
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST
jlarmour
parents:
diff changeset
532 as a hint to retry the operation a little bit later. This approach is
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST
jlarmour
parents:
diff changeset
533 also useful if the mode change can be started but will take some time
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST
jlarmour
parents:
diff changeset
534 to complete, for example shutting down a socket connection, and
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST
jlarmour
parents:
diff changeset
535 additional processing will be needed later on.</P
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST
jlarmour
parents:
diff changeset
536 ></LI
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST
jlarmour
parents:
diff changeset
537 ><LI
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST
jlarmour
parents:
diff changeset
538 ><P
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST
jlarmour
parents:
diff changeset
539 >If the request is felt to be inappropriate, for example switching off
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST
jlarmour
parents:
diff changeset
540 a device that is still in use, the mode change function can
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST
jlarmour
parents:
diff changeset
541 call <TT
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST
jlarmour
parents:
diff changeset
542 CLASS="FUNCTION"
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST
jlarmour
parents:
diff changeset
543 >power_set_controller_mode</TT
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST
jlarmour
parents:
diff changeset
544 > to reset the
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST
jlarmour
parents:
diff changeset
545 desired mode for this controller back to the current mode.
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST
jlarmour
parents:
diff changeset
546 Higher-level code can then interpret this as a hint that there is more
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST
jlarmour
parents:
diff changeset
547 activity in the system than had been apparent.</P
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST
jlarmour
parents:
diff changeset
548 ></LI
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST
jlarmour
parents:
diff changeset
549 ><LI
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST
jlarmour
parents:
diff changeset
550 ><P
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST
jlarmour
parents:
diff changeset
551 >For a global mode change, if the new mode is felt to be inappropriate
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST
jlarmour
parents:
diff changeset
552 then the power controller can call <TT
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST
jlarmour
parents:
diff changeset
553 CLASS="FUNCTION"
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST
jlarmour
parents:
diff changeset
554 >power_set_mode</TT
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST
jlarmour
parents:
diff changeset
555 >
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST
jlarmour
parents:
diff changeset
556 to indicate this. An example of this would be the policy module
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST
jlarmour
parents:
diff changeset
557 deciding to switch off the whole unit while there is still I/O
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST
jlarmour
parents:
diff changeset
558 activity.</P
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST
jlarmour
parents:
diff changeset
559 ></LI
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST
jlarmour
parents:
diff changeset
560 ></OL
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST
jlarmour
parents:
diff changeset
561 ></LI
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST
jlarmour
parents:
diff changeset
562 ></OL
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST
jlarmour
parents:
diff changeset
563 ><P
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST
jlarmour
parents:
diff changeset
564 >Mode change functions should not directly manipulate any other fields
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST
jlarmour
parents:
diff changeset
565 in the <SPAN
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST
jlarmour
parents:
diff changeset
566 CLASS="STRUCTNAME"
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST
jlarmour
parents:
diff changeset
567 >PowerController</SPAN
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST
jlarmour
parents:
diff changeset
568 > data structure. If it
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST
jlarmour
parents:
diff changeset
569 is necessary to keep track of additional data then static variables
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST
jlarmour
parents:
diff changeset
570 can be used.</P
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST
jlarmour
parents:
diff changeset
571 ><P
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST
jlarmour
parents:
diff changeset
572 >It should be noted that the above are only guidelines. Their
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST
jlarmour
parents:
diff changeset
573 application in any given situation may be unclear. In addition the
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST
jlarmour
parents:
diff changeset
574 detailed requirements of specific systems will vary, so even if the
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST
jlarmour
parents:
diff changeset
575 power controller for a given device driver follows the above
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST
jlarmour
parents:
diff changeset
576 guidelines exactly it may turn out that slightly different behaviour
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST
jlarmour
parents:
diff changeset
577 would be more appropriate for the actual system that is being
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST
jlarmour
parents:
diff changeset
578 developed. Fortunately the open source nature of
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST
jlarmour
parents:
diff changeset
579 <SPAN
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST
jlarmour
parents:
diff changeset
580 CLASS="PRODUCTNAME"
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST
jlarmour
parents:
diff changeset
581 >eCos</SPAN
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST
jlarmour
parents:
diff changeset
582 > allows system developers to fine-tune
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST
jlarmour
parents:
diff changeset
583 power controllers to meet their exact requirements.</P
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST
jlarmour
parents:
diff changeset
584 ></DIV
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST
jlarmour
parents:
diff changeset
585 ><DIV
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST
jlarmour
parents:
diff changeset
586 CLASS="NAVFOOTER"
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST
jlarmour
parents:
diff changeset
587 ><HR
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST
jlarmour
parents:
diff changeset
588 ALIGN="LEFT"
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST
jlarmour
parents:
diff changeset
589 WIDTH="100%"><TABLE
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST
jlarmour
parents:
diff changeset
590 WIDTH="100%"
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST
jlarmour
parents:
diff changeset
591 BORDER="0"
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST
jlarmour
parents:
diff changeset
592 CELLPADDING="0"
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST
jlarmour
parents:
diff changeset
593 CELLSPACING="0"
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST
jlarmour
parents:
diff changeset
594 ><TR
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST
jlarmour
parents:
diff changeset
595 ><TD
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST
jlarmour
parents:
diff changeset
596 WIDTH="33%"
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST
jlarmour
parents:
diff changeset
597 ALIGN="left"
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST
jlarmour
parents:
diff changeset
598 VALIGN="top"
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST
jlarmour
parents:
diff changeset
599 ><A
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST
jlarmour
parents:
diff changeset
600 HREF="power-attached.html"
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST
jlarmour
parents:
diff changeset
601 >Prev</A
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST
jlarmour
parents:
diff changeset
602 ></TD
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST
jlarmour
parents:
diff changeset
603 ><TD
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST
jlarmour
parents:
diff changeset
604 WIDTH="34%"
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST
jlarmour
parents:
diff changeset
605 ALIGN="center"
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST
jlarmour
parents:
diff changeset
606 VALIGN="top"
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST
jlarmour
parents:
diff changeset
607 ><A
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST
jlarmour
parents:
diff changeset
608 HREF="services-power.html"
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST
jlarmour
parents:
diff changeset
609 >Home</A
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST
jlarmour
parents:
diff changeset
610 ></TD
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST
jlarmour
parents:
diff changeset
611 ><TD
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST
jlarmour
parents:
diff changeset
612 WIDTH="33%"
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST
jlarmour
parents:
diff changeset
613 ALIGN="right"
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST
jlarmour
parents:
diff changeset
614 VALIGN="top"
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST
jlarmour
parents:
diff changeset
615 >&nbsp;</TD
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST
jlarmour
parents:
diff changeset
616 ></TR
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST
jlarmour
parents:
diff changeset
617 ><TR
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST
jlarmour
parents:
diff changeset
618 ><TD
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST
jlarmour
parents:
diff changeset
619 WIDTH="33%"
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST
jlarmour
parents:
diff changeset
620 ALIGN="left"
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST
jlarmour
parents:
diff changeset
621 VALIGN="top"
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST
jlarmour
parents:
diff changeset
622 >Attached and Detached Controllers</TD
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST
jlarmour
parents:
diff changeset
623 ><TD
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST
jlarmour
parents:
diff changeset
624 WIDTH="34%"
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST
jlarmour
parents:
diff changeset
625 ALIGN="center"
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST
jlarmour
parents:
diff changeset
626 VALIGN="top"
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST
jlarmour
parents:
diff changeset
627 >&nbsp;</TD
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST
jlarmour
parents:
diff changeset
628 ><TD
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST
jlarmour
parents:
diff changeset
629 WIDTH="33%"
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST
jlarmour
parents:
diff changeset
630 ALIGN="right"
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST
jlarmour
parents:
diff changeset
631 VALIGN="top"
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST
jlarmour
parents:
diff changeset
632 >&nbsp;</TD
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST
jlarmour
parents:
diff changeset
633 ></TR
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST
jlarmour
parents:
diff changeset
634 ></TABLE
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST
jlarmour
parents:
diff changeset
635 ></DIV
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST
jlarmour
parents:
diff changeset
636 ></BODY
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST
jlarmour
parents:
diff changeset
637 ></HTML
2729
74dbf4c3f2e1 Update all copyright banners to reflect FSF ownership; fix and improve licence text.
jlarmour
parents: 208
diff changeset
638 >