mirror of
https://github.com/u-boot/u-boot.git
synced 2025-04-23 13:56:20 +00:00
cae243927f
We don't have audio support in U-Boot, but we do have boot menus. Add an option to re-map the volume and power buttons to up/down/enter so that in situations where these are the only available buttons (such as on mobile phones) it's still possible to navigate menus built in U-Boot or an external EFI app like GRUB or systemd-boot. Signed-off-by: Caleb Connolly <caleb.connolly@linaro.org> Reviewed-by: Dragan Simic <dsimic@manjaro.org>
74 lines
1.5 KiB
C
74 lines
1.5 KiB
C
// SPDX-License-Identifier: GPL-2.0+
|
|
/*
|
|
* Copyright (C) 2020 Philippe Reynes <philippe.reynes@softathome.com>
|
|
*
|
|
* Based on led-uclass.c
|
|
*/
|
|
|
|
#define LOG_CATEGORY UCLASS_BUTTON
|
|
|
|
#include <button.h>
|
|
#include <dm.h>
|
|
#include <dm/uclass-internal.h>
|
|
#include <dt-bindings/input/linux-event-codes.h>
|
|
|
|
int button_get_by_label(const char *label, struct udevice **devp)
|
|
{
|
|
struct udevice *dev;
|
|
struct uclass *uc;
|
|
|
|
uclass_id_foreach_dev(UCLASS_BUTTON, dev, uc) {
|
|
struct button_uc_plat *uc_plat = dev_get_uclass_plat(dev);
|
|
|
|
/* Ignore the top-level button node */
|
|
if (uc_plat->label && !strcmp(label, uc_plat->label))
|
|
return uclass_get_device_tail(dev, 0, devp);
|
|
}
|
|
|
|
return -ENODEV;
|
|
}
|
|
|
|
enum button_state_t button_get_state(struct udevice *dev)
|
|
{
|
|
struct button_ops *ops = button_get_ops(dev);
|
|
|
|
if (!ops->get_state)
|
|
return -ENOSYS;
|
|
|
|
return ops->get_state(dev);
|
|
}
|
|
|
|
static int button_remap_phone_keys(int code)
|
|
{
|
|
switch (code) {
|
|
case KEY_VOLUMEUP:
|
|
return KEY_UP;
|
|
case KEY_VOLUMEDOWN:
|
|
return KEY_DOWN;
|
|
case KEY_POWER:
|
|
return KEY_ENTER;
|
|
default:
|
|
return code;
|
|
}
|
|
}
|
|
|
|
int button_get_code(struct udevice *dev)
|
|
{
|
|
struct button_ops *ops = button_get_ops(dev);
|
|
int code;
|
|
|
|
if (!ops->get_code)
|
|
return -ENOSYS;
|
|
|
|
code = ops->get_code(dev);
|
|
if (CONFIG_IS_ENABLED(BUTTON_REMAP_PHONE_KEYS))
|
|
return button_remap_phone_keys(code);
|
|
else
|
|
return code;
|
|
}
|
|
|
|
UCLASS_DRIVER(button) = {
|
|
.id = UCLASS_BUTTON,
|
|
.name = "button",
|
|
.per_device_plat_auto = sizeof(struct button_uc_plat),
|
|
};
|