mirror of
https://github.com/u-boot/u-boot.git
synced 2024-11-23 20:24:26 +08:00
6a27e540de
Add a sound driver which can output simple beeps using this legacy timer. Signed-off-by: Simon Glass <sjg@chromium.org> Reviewed-by: Bin Meng <bmeng.cn@gmail.com>
39 lines
665 B
C
39 lines
665 B
C
// SPDX-License-Identifier: GPL-2.0+
|
|
/*
|
|
* Copyright 2018 Google LLC
|
|
*/
|
|
|
|
#include <common.h>
|
|
#include <dm.h>
|
|
#include <sound.h>
|
|
#include <asm/i8254.h>
|
|
|
|
int i8254_start_beep(struct udevice *dev, int frequency_hz)
|
|
{
|
|
return i8254_enable_beep(frequency_hz);
|
|
}
|
|
|
|
int i8254_stop_beep(struct udevice *dev)
|
|
{
|
|
i8254_disable_beep();
|
|
|
|
return 0;
|
|
}
|
|
|
|
static const struct sound_ops i8254_ops = {
|
|
.start_beep = i8254_start_beep,
|
|
.stop_beep = i8254_stop_beep,
|
|
};
|
|
|
|
static const struct udevice_id i8254_ids[] = {
|
|
{ .compatible = "i8254,beeper" },
|
|
{ }
|
|
};
|
|
|
|
U_BOOT_DRIVER(i8254_drv) = {
|
|
.name = "i8254_drv",
|
|
.id = UCLASS_SOUND,
|
|
.of_match = i8254_ids,
|
|
.ops = &i8254_ops,
|
|
};
|