mirror of
https://github.com/brain-hackers/u-boot-brain
synced 2024-09-28 23:50:26 +09:00
cmd: button: add a new 'button' command
Adds a command 'button' that provides the list of buttons supported by the board, and the state of a button. Reviewed-by: Simon Glass <sjg@chromium.org> Signed-off-by: Philippe Reynes <philippe.reynes@softathome.com>
This commit is contained in:
parent
486b973ee9
commit
325141a6ea
11
cmd/Kconfig
11
cmd/Kconfig
@ -1680,6 +1680,17 @@ config CMD_BLOCK_CACHE
|
||||
during development, but also allows the cache to be disabled when
|
||||
it might hurt performance (e.g. when using the ums command).
|
||||
|
||||
config CMD_BUTTON
|
||||
bool "button"
|
||||
depends on BUTTON
|
||||
default y if BUTTON
|
||||
help
|
||||
Enable the 'button' command which allows to get the status of
|
||||
buttons supported by the board. The buttonss can be listed with
|
||||
'button list' and state can be known with 'button <label>'.
|
||||
Any button drivers can be controlled with this command, e.g.
|
||||
button_gpio.
|
||||
|
||||
config CMD_CACHE
|
||||
bool "icache or dcache"
|
||||
help
|
||||
|
@ -33,6 +33,7 @@ obj-$(CONFIG_CMD_BOOTSTAGE) += bootstage.o
|
||||
obj-$(CONFIG_CMD_BOOTZ) += bootz.o
|
||||
obj-$(CONFIG_CMD_BOOTI) += booti.o
|
||||
obj-$(CONFIG_CMD_BTRFS) += btrfs.o
|
||||
obj-$(CONFIG_CMD_BUTTON) += button.o
|
||||
obj-$(CONFIG_CMD_CACHE) += cache.o
|
||||
obj-$(CONFIG_CMD_CBFS) += cbfs.o
|
||||
obj-$(CONFIG_CMD_CLK) += clk.o
|
||||
|
86
cmd/button.c
Normal file
86
cmd/button.c
Normal file
@ -0,0 +1,86 @@
|
||||
// SPDX-License-Identifier: GPL-2.0
|
||||
/*
|
||||
* Copyright (C) 2020 Philippe Reynes <philippe.reynes@softathome.com>
|
||||
*
|
||||
* Based on led.c
|
||||
*/
|
||||
|
||||
#include <common.h>
|
||||
#include <command.h>
|
||||
#include <dm.h>
|
||||
#include <button.h>
|
||||
#include <dm/uclass-internal.h>
|
||||
|
||||
static const char *const state_label[] = {
|
||||
[BUTTON_OFF] = "off",
|
||||
[BUTTON_ON] = "on",
|
||||
};
|
||||
|
||||
static int show_button_state(struct udevice *dev)
|
||||
{
|
||||
int ret;
|
||||
|
||||
ret = button_get_state(dev);
|
||||
if (ret >= BUTTON_COUNT)
|
||||
ret = -EINVAL;
|
||||
if (ret >= 0)
|
||||
printf("%s\n", state_label[ret]);
|
||||
|
||||
return ret;
|
||||
}
|
||||
|
||||
static int list_buttons(void)
|
||||
{
|
||||
struct udevice *dev;
|
||||
int ret;
|
||||
|
||||
for (uclass_find_first_device(UCLASS_BUTTON, &dev);
|
||||
dev;
|
||||
uclass_find_next_device(&dev)) {
|
||||
struct button_uc_plat *plat = dev_get_uclass_platdata(dev);
|
||||
|
||||
if (!plat->label)
|
||||
continue;
|
||||
printf("%-15s ", plat->label);
|
||||
if (device_active(dev)) {
|
||||
ret = show_button_state(dev);
|
||||
if (ret < 0)
|
||||
printf("Error %d\n", ret);
|
||||
} else {
|
||||
printf("<inactive>\n");
|
||||
}
|
||||
}
|
||||
|
||||
return 0;
|
||||
}
|
||||
|
||||
int do_button(struct cmd_tbl *cmdtp, int flag, int argc, char *const argv[])
|
||||
{
|
||||
const char *button_label;
|
||||
struct udevice *dev;
|
||||
int ret;
|
||||
|
||||
/* Validate arguments */
|
||||
if (argc < 2)
|
||||
return CMD_RET_USAGE;
|
||||
button_label = argv[1];
|
||||
if (strncmp(button_label, "list", 4) == 0)
|
||||
return list_buttons();
|
||||
|
||||
ret = button_get_by_label(button_label, &dev);
|
||||
if (ret) {
|
||||
printf("Button '%s' not found (err=%d)\n", button_label, ret);
|
||||
return CMD_RET_FAILURE;
|
||||
}
|
||||
|
||||
ret = show_button_state(dev);
|
||||
|
||||
return 0;
|
||||
}
|
||||
|
||||
U_BOOT_CMD(
|
||||
button, 4, 1, do_button,
|
||||
"manage buttons",
|
||||
"<button_label> \tGet button state\n"
|
||||
"button list\t\tShow a list of buttons"
|
||||
);
|
Loading…
Reference in New Issue
Block a user