drivers/sound/i8254_beep.c

   1 // SPDX-License-Identifier: GPL-2.0+
   2 /*
   3  * Copyright 2018 Google LLC
   4  */
   5
   6 #include <common.h>
   7 #include <dm.h>
   8 #include <sound.h>
   9 #include <asm/i8254.h>
  10
  11 int i8254_start_beep(struct udevice *dev, int frequency_hz)
  12 {
  13         return i8254_enable_beep(frequency_hz);
  14 }
  15
  16 int i8254_stop_beep(struct udevice *dev)
  17 {
  18         i8254_disable_beep();
  19
  20         return 0;
  21 }
  22
  23 static const struct sound_ops i8254_ops = {
  24         .start_beep     = i8254_start_beep,
  25         .stop_beep      = i8254_stop_beep,
  26 };
  27
  28 static const struct udevice_id i8254_ids[] = {
  29         { .compatible = "i8254,beeper" },
  30         { }
  31 };
  32
  33 U_BOOT_DRIVER(i8254_drv) = {
  34         .name           = "i8254_drv",
  35         .id             = UCLASS_SOUND,
  36         .of_match       = i8254_ids,
  37         .ops            = &i8254_ops,
  38 };