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