1// SPDX-License-Identifier: GPL-2.0
2/*
3 * Intel PMC command
4 *
5 * Copyright 2019 Google LLC
6 */
7
8#include <common.h>
9#include <command.h>
10#include <dm.h>
11#include <power/acpi_pmc.h>
12
13static int get_pmc_dev(struct udevice **devp)
14{
15	struct udevice *dev;
16	int ret;
17
18	ret = uclass_first_device_err(UCLASS_ACPI_PMC, &dev);
19	if (ret) {
20		printf("Could not find device (err=%d)\n", ret);
21		return ret;
22	}
23	ret = pmc_init(dev);
24	if (ret) {
25		printf("Could not init device (err=%d)\n", ret);
26		return ret;
27	}
28	*devp = dev;
29
30	return 0;
31}
32
33static int do_pmc_init(struct cmd_tbl *cmdtp, int flag, int argc,
34		       char *const argv[])
35{
36	struct udevice *dev;
37	int ret;
38
39	ret = get_pmc_dev(&dev);
40	if (ret)
41		return CMD_RET_FAILURE;
42
43	return 0;
44}
45
46static int do_pmc_info(struct cmd_tbl *cmdtp, int flag, int argc,
47		       char *const argv[])
48{
49	struct udevice *dev;
50	int ret;
51
52	ret = get_pmc_dev(&dev);
53	if (ret)
54		return CMD_RET_FAILURE;
55	pmc_dump_info(dev);
56
57	return 0;
58}
59
60static struct cmd_tbl cmd_pmc_sub[] = {
61	U_BOOT_CMD_MKENT(init, 0, 1, do_pmc_init, "", ""),
62	U_BOOT_CMD_MKENT(info, 0, 1, do_pmc_info, "", ""),
63};
64
65static int do_pmc(struct cmd_tbl *cmdtp, int flag, int argc, char *const argv[])
66{
67	const struct cmd_tbl *cp;
68
69	if (argc < 2) /* no subcommand */
70		return cmd_usage(cmdtp);
71
72	cp = find_cmd_tbl(argv[1], &cmd_pmc_sub[0], ARRAY_SIZE(cmd_pmc_sub));
73	if (!cp)
74		return CMD_RET_USAGE;
75
76	return cp->cmd(cmdtp, flag, argc, argv);
77}
78
79U_BOOT_CMD(
80	pmc, 2, 1, do_pmc, "Power-management controller info",
81	"info - read state and show info about the PMC\n"
82	"pmc init - read state from the PMC\n"
83	);
84