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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+
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/*
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* Copyright 2018 Google LLC
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*/
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#include <common.h>
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#include <dm.h>
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#include <sound.h>
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#include <asm/i8254.h>
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int i8254_start_beep(struct udevice *dev, int frequency_hz)
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{
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return i8254_enable_beep(frequency_hz);
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}
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int i8254_stop_beep(struct udevice *dev)
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{
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i8254_disable_beep();
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return 0;
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}
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static const struct sound_ops i8254_ops = {
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.start_beep = i8254_start_beep,
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.stop_beep = i8254_stop_beep,
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};
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static const struct udevice_id i8254_ids[] = {
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{ .compatible = "i8254,beeper" },
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{ }
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};
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U_BOOT_DRIVER(i8254_drv) = {
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.name = "i8254_drv",
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.id = UCLASS_SOUND,
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.of_match = i8254_ids,
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.ops = &i8254_ops,
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};
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