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![Simon Glass](/assets/img/avatar_default.png)
We should not use typedefs in U-Boot. They cannot be used as forward declarations which means that header files must include the full header to access them. Drop the typedef and rename the struct to remove the _s suffix which is now not useful. This requires quite a few header-file additions. Signed-off-by: Simon Glass <sjg@chromium.org>
175 lines
3.7 KiB
C
175 lines
3.7 KiB
C
// SPDX-License-Identifier: GPL-2.0+
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/*
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* Watchdog commands
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*
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* Copyright (c) 2019 Michael Walle <michael@walle.cc>
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*/
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#include <common.h>
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#include <command.h>
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#include <dm.h>
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#include <wdt.h>
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static struct udevice *currdev;
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static int do_wdt_list(struct cmd_tbl *cmdtp, int flag, int argc,
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char *const argv[])
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{
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struct udevice *dev;
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struct uclass *uc;
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int ret;
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ret = uclass_get(UCLASS_WDT, &uc);
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if (ret)
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return CMD_RET_FAILURE;
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uclass_foreach_dev(dev, uc)
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printf("%s (%s)\n", dev->name, dev->driver->name);
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return CMD_RET_SUCCESS;
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}
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static int do_wdt_dev(struct cmd_tbl *cmdtp, int flag, int argc,
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char *const argv[])
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{
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int ret;
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if (argc > 1) {
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ret = uclass_get_device_by_name(UCLASS_WDT, argv[1], &currdev);
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if (ret) {
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printf("Can't get the watchdog timer: %s\n", argv[1]);
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return CMD_RET_FAILURE;
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}
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} else {
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if (!currdev) {
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printf("No watchdog timer device set!\n");
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return CMD_RET_FAILURE;
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}
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printf("dev: %s\n", currdev->name);
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}
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return CMD_RET_SUCCESS;
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}
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static int check_currdev(void)
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{
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if (!currdev) {
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printf("No device set, use 'wdt dev' first\n");
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return CMD_RET_FAILURE;
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}
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return 0;
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}
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static int do_wdt_start(struct cmd_tbl *cmdtp, int flag, int argc,
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char *const argv[])
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{
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int ret;
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u64 timeout;
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ulong flags = 0;
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if (argc < 2)
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return CMD_RET_USAGE;
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ret = check_currdev();
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if (ret)
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return ret;
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timeout = simple_strtoull(argv[1], NULL, 0);
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if (argc > 2)
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flags = simple_strtoul(argv[2], NULL, 0);
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ret = wdt_start(currdev, timeout, flags);
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if (ret == -ENOSYS) {
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printf("Starting watchdog timer not supported.\n");
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return CMD_RET_FAILURE;
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} else if (ret) {
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printf("Starting watchdog timer failed (%d)\n", ret);
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return CMD_RET_FAILURE;
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}
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return CMD_RET_SUCCESS;
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}
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static int do_wdt_stop(struct cmd_tbl *cmdtp, int flag, int argc,
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char *const argv[])
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{
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int ret;
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ret = check_currdev();
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if (ret)
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return ret;
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ret = wdt_stop(currdev);
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if (ret == -ENOSYS) {
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printf("Stopping watchdog timer not supported.\n");
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return CMD_RET_FAILURE;
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} else if (ret) {
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printf("Stopping watchdog timer failed (%d)\n", ret);
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return CMD_RET_FAILURE;
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}
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return CMD_RET_SUCCESS;
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}
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static int do_wdt_reset(struct cmd_tbl *cmdtp, int flag, int argc,
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char *const argv[])
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{
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int ret;
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ret = check_currdev();
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if (ret)
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return ret;
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ret = wdt_reset(currdev);
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if (ret == -ENOSYS) {
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printf("Resetting watchdog timer not supported.\n");
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return CMD_RET_FAILURE;
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} else if (ret) {
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printf("Resetting watchdog timer failed (%d)\n", ret);
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return CMD_RET_FAILURE;
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}
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return CMD_RET_SUCCESS;
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}
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static int do_wdt_expire(struct cmd_tbl *cmdtp, int flag, int argc,
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char *const argv[])
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{
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int ret;
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ulong flags = 0;
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ret = check_currdev();
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if (ret)
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return ret;
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if (argc > 1)
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flags = simple_strtoul(argv[1], NULL, 0);
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ret = wdt_expire_now(currdev, flags);
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if (ret == -ENOSYS) {
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printf("Expiring watchdog timer not supported.\n");
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return CMD_RET_FAILURE;
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} else if (ret) {
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printf("Expiring watchdog timer failed (%d)\n", ret);
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return CMD_RET_FAILURE;
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}
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return CMD_RET_SUCCESS;
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}
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static char wdt_help_text[] =
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"list - list watchdog devices\n"
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"wdt dev [<name>] - get/set current watchdog device\n"
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"wdt start <timeout ms> [flags] - start watchdog timer\n"
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"wdt stop - stop watchdog timer\n"
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"wdt reset - reset watchdog timer\n"
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"wdt expire [flags] - expire watchdog timer immediately\n";
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U_BOOT_CMD_WITH_SUBCMDS(wdt, "Watchdog sub-system", wdt_help_text,
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U_BOOT_SUBCMD_MKENT(list, 1, 1, do_wdt_list),
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U_BOOT_SUBCMD_MKENT(dev, 2, 1, do_wdt_dev),
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U_BOOT_SUBCMD_MKENT(start, 3, 1, do_wdt_start),
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U_BOOT_SUBCMD_MKENT(stop, 1, 1, do_wdt_stop),
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U_BOOT_SUBCMD_MKENT(reset, 1, 1, do_wdt_reset),
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U_BOOT_SUBCMD_MKENT(expire, 2, 1, do_wdt_expire));
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