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3b65ee34 SG |
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 | ||
13 | static 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 | ||
33 | static int do_pmc_init(cmd_tbl_t *cmdtp, int flag, int argc, char *const argv[]) | |
34 | { | |
35 | struct udevice *dev; | |
36 | int ret; | |
37 | ||
38 | ret = get_pmc_dev(&dev); | |
39 | if (ret) | |
40 | return CMD_RET_FAILURE; | |
41 | ||
42 | return 0; | |
43 | } | |
44 | ||
45 | static int do_pmc_info(cmd_tbl_t *cmdtp, int flag, int argc, char *const argv[]) | |
46 | { | |
47 | struct udevice *dev; | |
48 | int ret; | |
49 | ||
50 | ret = get_pmc_dev(&dev); | |
51 | if (ret) | |
52 | return CMD_RET_FAILURE; | |
53 | pmc_dump_info(dev); | |
54 | ||
55 | return 0; | |
56 | } | |
57 | ||
58 | static cmd_tbl_t cmd_pmc_sub[] = { | |
59 | U_BOOT_CMD_MKENT(init, 0, 1, do_pmc_init, "", ""), | |
60 | U_BOOT_CMD_MKENT(info, 0, 1, do_pmc_info, "", ""), | |
61 | }; | |
62 | ||
63 | static int do_pmc(cmd_tbl_t *cmdtp, int flag, int argc, char *const argv[]) | |
64 | { | |
65 | const cmd_tbl_t *cp; | |
66 | ||
67 | if (argc < 2) /* no subcommand */ | |
68 | return cmd_usage(cmdtp); | |
69 | ||
70 | cp = find_cmd_tbl(argv[1], &cmd_pmc_sub[0], ARRAY_SIZE(cmd_pmc_sub)); | |
71 | if (!cp) | |
72 | return CMD_RET_USAGE; | |
73 | ||
74 | return cp->cmd(cmdtp, flag, argc, argv); | |
75 | } | |
76 | ||
77 | U_BOOT_CMD( | |
78 | pmc, 2, 1, do_pmc, "Power-management controller info", | |
79 | "info - read state and show info about the PMC\n" | |
80 | "pmc init - read state from the PMC\n" | |
81 | ); |