summaryrefslogtreecommitdiffstats
path: root/commands/clk.c
blob: 47159dddd214395c7a676ce72a312fb468bececc (plain) (blame)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
#include <common.h>
#include <command.h>
#include <getopt.h>
#include <linux/clk.h>
#include <linux/err.h>
#include <environment.h>
#include <malloc.h>

static int do_clk_enable(int argc, char *argv[])
{
	struct clk *clk;

	if (argc != 2)
		return COMMAND_ERROR_USAGE;

	clk = clk_lookup(argv[1]);
	if (IS_ERR(clk))
		return PTR_ERR(clk);

	return clk_enable(clk);
}

BAREBOX_CMD_START(clk_enable)
	.cmd		= do_clk_enable,
	BAREBOX_CMD_DESC("enable a clock")
	BAREBOX_CMD_OPTS("CLK")
	BAREBOX_CMD_GROUP(CMD_GRP_HWMANIP)
	BAREBOX_CMD_COMPLETE(clk_name_complete)
BAREBOX_CMD_END

static int do_clk_disable(int argc, char *argv[])
{
	struct clk *clk;

	if (argc != 2)
		return COMMAND_ERROR_USAGE;

	clk = clk_lookup(argv[1]);
	if (IS_ERR(clk))
		return PTR_ERR(clk);

	clk_disable(clk);

	return COMMAND_SUCCESS;
}

BAREBOX_CMD_START(clk_disable)
	.cmd		= do_clk_disable,
	BAREBOX_CMD_DESC("disable a clock")
	BAREBOX_CMD_OPTS("CLK")
	BAREBOX_CMD_GROUP(CMD_GRP_HWMANIP)
	BAREBOX_CMD_COMPLETE(clk_name_complete)
BAREBOX_CMD_END

static int do_clk_set_rate(int argc, char *argv[])
{
	struct clk *clk;
	unsigned long rate;

	if (argc != 3)
		return COMMAND_ERROR_USAGE;

	clk = clk_lookup(argv[1]);
	if (IS_ERR(clk))
		return PTR_ERR(clk);

	rate = simple_strtoul(argv[2], NULL, 0);

	return clk_set_rate(clk, rate);
}

BAREBOX_CMD_HELP_START(clk_set_rate)
BAREBOX_CMD_HELP_TEXT("Set clock CLK to RATE")
BAREBOX_CMD_HELP_END

BAREBOX_CMD_START(clk_set_rate)
	.cmd		= do_clk_set_rate,
	BAREBOX_CMD_DESC("set a clocks rate")
	BAREBOX_CMD_OPTS("CLK HZ")
	BAREBOX_CMD_GROUP(CMD_GRP_HWMANIP)
	BAREBOX_CMD_HELP(cmd_clk_set_rate_help)
	BAREBOX_CMD_COMPLETE(clk_name_complete)
BAREBOX_CMD_END

static int do_clk_get_rate(int argc, char *argv[])
{
	int opt;
	struct clk *clk;
	unsigned long rate;
	const char *variable_name = NULL;

	while ((opt = getopt(argc, argv, "s:")) > 0) {
		switch (opt) {
		case 's':
			variable_name = optarg;
			break;
		default:
			return COMMAND_ERROR_USAGE;
		}
	}

	if (optind == argc) {
		eprintf("No clock name given\n");
		return COMMAND_ERROR_USAGE;
	}

	clk = clk_lookup(argv[optind]);
	if (IS_ERR(clk))
		return PTR_ERR(clk);

	rate = clk_get_rate(clk);

	if (variable_name) {
		char *t;

		t = basprintf("%lu", rate);
		setenv(variable_name, t);
		free(t);
	} else
		printf("%lu\n", rate);

	return COMMAND_SUCCESS;
}

BAREBOX_CMD_HELP_START(clk_get_rate)
BAREBOX_CMD_HELP_TEXT("Show clock CLK rate")
BAREBOX_CMD_HELP_OPT("-s VARNAME",  "set variable VARNAME instead of showing information")
BAREBOX_CMD_HELP_END

BAREBOX_CMD_START(clk_get_rate)
	.cmd		= do_clk_get_rate,
	BAREBOX_CMD_DESC("get a clocks rate")
	BAREBOX_CMD_OPTS("[-s VARNAME] CLK")
	BAREBOX_CMD_GROUP(CMD_GRP_HWMANIP)
	BAREBOX_CMD_HELP(cmd_clk_get_rate_help)
	BAREBOX_CMD_COMPLETE(clk_name_complete)
BAREBOX_CMD_END

static int do_clk_dump(int argc, char *argv[])
{
	int opt, verbose = 0;

	while ((opt = getopt(argc, argv, "v")) > 0) {
		switch(opt) {
		case 'v':
			verbose = 1;
			break;
		default:
			return -EINVAL;

		}
	}

	clk_dump(verbose);

	return COMMAND_SUCCESS;
}

BAREBOX_CMD_HELP_START(clk_dump)
BAREBOX_CMD_HELP_TEXT("Options:")
BAREBOX_CMD_HELP_OPT ("-v",  "verbose")
BAREBOX_CMD_HELP_END

BAREBOX_CMD_START(clk_dump)
	.cmd		= do_clk_dump,
	BAREBOX_CMD_DESC("show information about registered clocks")
	BAREBOX_CMD_OPTS("[-v]")
	BAREBOX_CMD_GROUP(CMD_GRP_INFO)
	BAREBOX_CMD_HELP(cmd_clk_dump_help)
BAREBOX_CMD_END

static int do_clk_set_parent(int argc, char *argv[])
{
	struct clk *clk, *parent;

	if (argc != 3)
		return COMMAND_ERROR_USAGE;

	clk = clk_lookup(argv[1]);
	if (IS_ERR(clk))
		return PTR_ERR(clk);
	parent = clk_lookup(argv[2]);
	if (IS_ERR(parent))
		return PTR_ERR(parent);

	return clk_set_parent(clk, parent);
}

BAREBOX_CMD_START(clk_set_parent)
	.cmd		= do_clk_set_parent,
	BAREBOX_CMD_DESC("set parent of a clock")
	BAREBOX_CMD_OPTS("CLK PARENT")
	BAREBOX_CMD_GROUP(CMD_GRP_HWMANIP)
	BAREBOX_CMD_COMPLETE(clk_name_complete)
BAREBOX_CMD_END