pmc.c
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// SPDX-License-Identifier: GPL-2.0
/*
* Intel PMC command
*
* Copyright 2019 Google LLC
*/
#include <common.h>
#include <command.h>
#include <dm.h>
#include <power/acpi_pmc.h>
static int get_pmc_dev(struct udevice **devp)
{
struct udevice *dev;
int ret;
ret = uclass_first_device_err(UCLASS_ACPI_PMC, &dev);
if (ret) {
printf("Could not find device (err=%d)\n", ret);
return ret;
}
ret = pmc_init(dev);
if (ret) {
printf("Could not init device (err=%d)\n", ret);
return ret;
}
*devp = dev;
return 0;
}
static int do_pmc_init(cmd_tbl_t *cmdtp, int flag, int argc, char *const argv[])
{
struct udevice *dev;
int ret;
ret = get_pmc_dev(&dev);
if (ret)
return CMD_RET_FAILURE;
return 0;
}
static int do_pmc_info(cmd_tbl_t *cmdtp, int flag, int argc, char *const argv[])
{
struct udevice *dev;
int ret;
ret = get_pmc_dev(&dev);
if (ret)
return CMD_RET_FAILURE;
pmc_dump_info(dev);
return 0;
}
static cmd_tbl_t cmd_pmc_sub[] = {
U_BOOT_CMD_MKENT(init, 0, 1, do_pmc_init, "", ""),
U_BOOT_CMD_MKENT(info, 0, 1, do_pmc_info, "", ""),
};
static int do_pmc(cmd_tbl_t *cmdtp, int flag, int argc, char *const argv[])
{
const cmd_tbl_t *cp;
if (argc < 2) /* no subcommand */
return cmd_usage(cmdtp);
cp = find_cmd_tbl(argv[1], &cmd_pmc_sub[0], ARRAY_SIZE(cmd_pmc_sub));
if (!cp)
return CMD_RET_USAGE;
return cp->cmd(cmdtp, flag, argc, argv);
}
U_BOOT_CMD(
pmc, 2, 1, do_pmc, "Power-management controller info",
"info - read state and show info about the PMC\n"
"pmc init - read state from the PMC\n"
);