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https://github.com/AsahiLinux/u-boot
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caa4daa2ae
We use 'priv' for private data but often use 'platdata' for platform data. We can't really use 'pdata' since that is ambiguous (it could mean private or platform data). Rename some of the latter variables to end with 'plat' for consistency. Signed-off-by: Simon Glass <sjg@chromium.org>
86 lines
1.6 KiB
C
86 lines
1.6 KiB
C
// SPDX-License-Identifier: GPL-2.0
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/*
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* Copyright (C) 2020 Philippe Reynes <philippe.reynes@softathome.com>
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*
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* Based on led.c
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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 <button.h>
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#include <dm/uclass-internal.h>
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static const char *const state_label[] = {
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[BUTTON_OFF] = "off",
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[BUTTON_ON] = "on",
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};
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static int show_button_state(struct udevice *dev)
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{
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int ret;
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ret = button_get_state(dev);
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if (ret >= BUTTON_COUNT)
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ret = -EINVAL;
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if (ret >= 0)
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printf("%s\n", state_label[ret]);
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return ret;
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}
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static int list_buttons(void)
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{
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struct udevice *dev;
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int ret;
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for (uclass_find_first_device(UCLASS_BUTTON, &dev);
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dev;
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uclass_find_next_device(&dev)) {
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struct button_uc_plat *plat = dev_get_uclass_plat(dev);
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if (!plat->label)
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continue;
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printf("%-15s ", plat->label);
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if (device_active(dev)) {
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ret = show_button_state(dev);
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if (ret < 0)
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printf("Error %d\n", ret);
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} else {
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printf("<inactive>\n");
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}
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}
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return 0;
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}
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int do_button(struct cmd_tbl *cmdtp, int flag, int argc, char *const argv[])
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{
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const char *button_label;
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struct udevice *dev;
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int ret;
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/* Validate arguments */
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if (argc < 2)
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return CMD_RET_USAGE;
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button_label = argv[1];
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if (strncmp(button_label, "list", 4) == 0)
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return list_buttons();
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ret = button_get_by_label(button_label, &dev);
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if (ret) {
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printf("Button '%s' not found (err=%d)\n", button_label, ret);
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return CMD_RET_FAILURE;
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}
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ret = show_button_state(dev);
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return !ret;
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}
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U_BOOT_CMD(
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button, 2, 1, do_button,
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"manage buttons",
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"<button_label> \tGet button state\n"
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"button list\t\tShow a list of buttons"
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);
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