summaryrefslogtreecommitdiff
path: root/cmd/pinmux.c
blob: 6c8ec5164d3ca5cfbb057513d537820aef8ba0dc (plain)
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
// SPDX-License-Identifier: GPL-2.0+
/*
 * Copyright (C) 2018, STMicroelectronics - All Rights Reserved
 */

#include <common.h>
#include <command.h>
#include <dm.h>
#include <errno.h>
#include <dm/pinctrl.h>
#include <dm/uclass-internal.h>

#define LIMIT_DEVNAME	30

static struct udevice *currdev;

static int do_dev(cmd_tbl_t *cmdtp, int flag, int argc, char * const argv[])
{
	const char *name;
	int ret;

	switch (argc) {
	case 2:
		name = argv[1];
		ret = uclass_get_device_by_name(UCLASS_PINCTRL, name, &currdev);
		if (ret) {
			printf("Can't get the pin-controller: %s!\n", name);
			return CMD_RET_FAILURE;
		}
	case 1:
		if (!currdev) {
			printf("Pin-controller device is not set!\n");
			return CMD_RET_USAGE;
		}

		printf("dev: %s\n", currdev->name);
	}

	return CMD_RET_SUCCESS;
}

static int show_pinmux(struct udevice *dev)
{
	char pin_name[PINNAME_SIZE];
	char pin_mux[PINMUX_SIZE];
	int pins_count;
	int i;
	int ret;

	pins_count = pinctrl_get_pins_count(dev);

	if (pins_count == -ENOSYS) {
		printf("Ops get_pins_count not supported\n");
		return pins_count;
	}

	for (i = 0; i < pins_count; i++) {
		ret = pinctrl_get_pin_name(dev, i, pin_name, PINNAME_SIZE);
		if (ret == -ENOSYS) {
			printf("Ops get_pin_name not supported\n");
			return ret;
		}

		ret = pinctrl_get_pin_muxing(dev, i, pin_mux, PINMUX_SIZE);
		if (ret) {
			printf("Ops get_pin_muxing error (%d)\n", ret);
			return ret;
		}

		printf("%-*s: %-*s\n", PINNAME_SIZE, pin_name,
		       PINMUX_SIZE, pin_mux);
	}

	return 0;
}

static int do_status(cmd_tbl_t *cmdtp, int flag, int argc, char * const argv[])
{
	struct udevice *dev;
	int ret = CMD_RET_USAGE;

	if (currdev && (argc < 2 || strcmp(argv[1], "-a")))
		return show_pinmux(currdev);

	if (argc < 2 || strcmp(argv[1], "-a"))
		return ret;

	uclass_foreach_dev_probe(UCLASS_PINCTRL, dev) {
		/* insert a separator between each pin-controller display */
		printf("--------------------------\n");
		printf("%s:\n", dev->name);
		ret = show_pinmux(dev);
		if (ret < 0)
			printf("Can't display pin muxing for %s\n",
			       dev->name);
	}

	return ret;
}

static int do_list(cmd_tbl_t *cmdtp, int flag, int argc, char * const argv[])
{
	struct udevice *dev;

	printf("| %-*.*s| %-*.*s| %s\n",
	       LIMIT_DEVNAME, LIMIT_DEVNAME, "Device",
	       LIMIT_DEVNAME, LIMIT_DEVNAME, "Driver",
	       "Parent");

	uclass_foreach_dev_probe(UCLASS_PINCTRL, dev) {
		printf("| %-*.*s| %-*.*s| %s\n",
		       LIMIT_DEVNAME, LIMIT_DEVNAME, dev->name,
		       LIMIT_DEVNAME, LIMIT_DEVNAME, dev->driver->name,
		       dev->parent->name);
	}

	return CMD_RET_SUCCESS;
}

static cmd_tbl_t pinmux_subcmd[] = {
	U_BOOT_CMD_MKENT(dev, 2, 1, do_dev, "", ""),
	U_BOOT_CMD_MKENT(list, 1, 1, do_list, "", ""),
	U_BOOT_CMD_MKENT(status, 2, 1, do_status, "", ""),
};

static int do_pinmux(cmd_tbl_t *cmdtp, int flag, int argc,
		     char * const argv[])
{
	cmd_tbl_t *cmd;

	argc--;
	argv++;

	cmd = find_cmd_tbl(argv[0], pinmux_subcmd, ARRAY_SIZE(pinmux_subcmd));
	if (!cmd || argc > cmd->maxargs)
		return CMD_RET_USAGE;

	return cmd->cmd(cmdtp, flag, argc, argv);
}

U_BOOT_CMD(pinmux, CONFIG_SYS_MAXARGS, 1, do_pinmux,
	   "show pin-controller muxing",
	   "list                     - list UCLASS_PINCTRL devices\n"
	   "pinmux dev [pincontroller-name] - select pin-controller device\n"
	   "pinmux status [-a]              - print pin-controller muxing [for all]\n"
)