diff options
author | Ben Dooks <ben-linux@fluff.org> | 2010-01-11 22:52:43 -0500 |
---|---|---|
committer | Ben Dooks <ben-linux@fluff.org> | 2010-01-15 03:10:15 -0500 |
commit | 37872bb9efddf9518cc77c43f9fa8fc6bfd3d727 (patch) | |
tree | 07ef14e59124b5b0fbb1cc151d9c33916de3e338 /Documentation | |
parent | c837e88cf9e18c311332cc1c8c488993a201d568 (diff) |
ARM: SAMSUNG: Add script to change old clksrc_clk to new register defs
This script is used to change the old style clksrc_clk as originally
found in plat-s3c64xx to the new style. It is here for reference if needed
for future code merges.
Signed-off-by: Ben Dooks <ben-linux@fluff.org>
Diffstat (limited to 'Documentation')
-rwxr-xr-x | Documentation/arm/Samsung/clksrc-change-registers.awk | 167 |
1 files changed, 167 insertions, 0 deletions
diff --git a/Documentation/arm/Samsung/clksrc-change-registers.awk b/Documentation/arm/Samsung/clksrc-change-registers.awk new file mode 100755 index 000000000000..0c50220851fb --- /dev/null +++ b/Documentation/arm/Samsung/clksrc-change-registers.awk | |||
@@ -0,0 +1,167 @@ | |||
1 | #!/usr/bin/awk -f | ||
2 | # | ||
3 | # Copyright 2010 Ben Dooks <ben-linux@fluff.org> | ||
4 | # | ||
5 | # Released under GPLv2 | ||
6 | |||
7 | # example usage | ||
8 | # ./clksrc-change-registers.awk arch/arm/plat-s5pc1xx/include/plat/regs-clock.h < src > dst | ||
9 | |||
10 | function extract_value(s) | ||
11 | { | ||
12 | eqat = index(s, "=") | ||
13 | comat = index(s, ",") | ||
14 | return substr(s, eqat+2, (comat-eqat)-2) | ||
15 | } | ||
16 | |||
17 | function remove_brackets(b) | ||
18 | { | ||
19 | return substr(b, 2, length(b)-2) | ||
20 | } | ||
21 | |||
22 | function splitdefine(l, p) | ||
23 | { | ||
24 | r = split(l, tp) | ||
25 | |||
26 | p[0] = tp[2] | ||
27 | p[1] = remove_brackets(tp[3]) | ||
28 | } | ||
29 | |||
30 | function find_length(f) | ||
31 | { | ||
32 | if (0) | ||
33 | printf "find_length " f "\n" > "/dev/stderr" | ||
34 | |||
35 | if (f ~ /0x1/) | ||
36 | return 1 | ||
37 | else if (f ~ /0x3/) | ||
38 | return 2 | ||
39 | else if (f ~ /0x7/) | ||
40 | return 3 | ||
41 | else if (f ~ /0xf/) | ||
42 | return 4 | ||
43 | |||
44 | printf "unknown legnth " f "\n" > "/dev/stderr" | ||
45 | exit | ||
46 | } | ||
47 | |||
48 | function find_shift(s) | ||
49 | { | ||
50 | id = index(s, "<") | ||
51 | if (id <= 0) { | ||
52 | printf "cannot find shift " s "\n" > "/dev/stderr" | ||
53 | exit | ||
54 | } | ||
55 | |||
56 | return substr(s, id+2) | ||
57 | } | ||
58 | |||
59 | |||
60 | BEGIN { | ||
61 | if (ARGC < 2) { | ||
62 | print "too few arguments" > "/dev/stderr" | ||
63 | exit | ||
64 | } | ||
65 | |||
66 | # read the header file and find the mask values that we will need | ||
67 | # to replace and create an associative array of values | ||
68 | |||
69 | while (getline line < ARGV[1] > 0) { | ||
70 | if (line ~ /\#define.*_MASK/ && | ||
71 | !(line ~ /S5PC100_EPLL_MASK/) && | ||
72 | !(line ~ /USB_SIG_MASK/)) { | ||
73 | splitdefine(line, fields) | ||
74 | name = fields[0] | ||
75 | if (0) | ||
76 | printf "MASK " line "\n" > "/dev/stderr" | ||
77 | dmask[name,0] = find_length(fields[1]) | ||
78 | dmask[name,1] = find_shift(fields[1]) | ||
79 | if (0) | ||
80 | printf "=> '" name "' LENGTH=" dmask[name,0] " SHIFT=" dmask[name,1] "\n" > "/dev/stderr" | ||
81 | } else { | ||
82 | } | ||
83 | } | ||
84 | |||
85 | delete ARGV[1] | ||
86 | } | ||
87 | |||
88 | /clksrc_clk.*=.*{/ { | ||
89 | shift="" | ||
90 | mask="" | ||
91 | divshift="" | ||
92 | reg_div="" | ||
93 | reg_src="" | ||
94 | indent=1 | ||
95 | |||
96 | print $0 | ||
97 | |||
98 | for(; indent >= 1;) { | ||
99 | if ((getline line) <= 0) { | ||
100 | printf "unexpected end of file" > "/dev/stderr" | ||
101 | exit 1; | ||
102 | } | ||
103 | |||
104 | if (line ~ /\.shift/) { | ||
105 | shift = extract_value(line) | ||
106 | } else if (line ~ /\.mask/) { | ||
107 | mask = extract_value(line) | ||
108 | } else if (line ~ /\.reg_divider/) { | ||
109 | reg_div = extract_value(line) | ||
110 | } else if (line ~ /\.reg_source/) { | ||
111 | reg_src = extract_value(line) | ||
112 | } else if (line ~ /\.divider_shift/) { | ||
113 | divshift = extract_value(line) | ||
114 | } else if (line ~ /{/) { | ||
115 | indent++ | ||
116 | print line | ||
117 | } else if (line ~ /}/) { | ||
118 | indent-- | ||
119 | |||
120 | if (indent == 0) { | ||
121 | if (0) { | ||
122 | printf "shift '" shift "' ='" dmask[shift,0] "'\n" > "/dev/stderr" | ||
123 | printf "mask '" mask "'\n" > "/dev/stderr" | ||
124 | printf "dshft '" divshift "'\n" > "/dev/stderr" | ||
125 | printf "rdiv '" reg_div "'\n" > "/dev/stderr" | ||
126 | printf "rsrc '" reg_src "'\n" > "/dev/stderr" | ||
127 | } | ||
128 | |||
129 | generated = mask | ||
130 | sub(reg_src, reg_div, generated) | ||
131 | |||
132 | if (0) { | ||
133 | printf "/* rsrc " reg_src " */\n" | ||
134 | printf "/* rdiv " reg_div " */\n" | ||
135 | printf "/* shift " shift " */\n" | ||
136 | printf "/* mask " mask " */\n" | ||
137 | printf "/* generated " generated " */\n" | ||
138 | } | ||
139 | |||
140 | if (reg_div != "") { | ||
141 | printf "\t.reg_div = { " | ||
142 | printf ".reg = " reg_div ", " | ||
143 | printf ".shift = " dmask[generated,1] ", " | ||
144 | printf ".size = " dmask[generated,0] ", " | ||
145 | printf "},\n" | ||
146 | } | ||
147 | |||
148 | printf "\t.reg_src = { " | ||
149 | printf ".reg = " reg_src ", " | ||
150 | printf ".shift = " dmask[mask,1] ", " | ||
151 | printf ".size = " dmask[mask,0] ", " | ||
152 | |||
153 | printf "},\n" | ||
154 | |||
155 | } | ||
156 | |||
157 | print line | ||
158 | } else { | ||
159 | print line | ||
160 | } | ||
161 | |||
162 | if (0) | ||
163 | printf indent ":" line "\n" > "/dev/stderr" | ||
164 | } | ||
165 | } | ||
166 | |||
167 | // && ! /clksrc_clk.*=.*{/ { print $0 } | ||