cmd/sound.c

   1 // SPDX-License-Identifier: GPL-2.0+
   2 /*
   3  * Copyright (C) 2012 Samsung Electronics
   4  * Rajeshwari Shinde <rajeshwari.s@samsung.com>
   5  */
   6
   7 #include <common.h>
   8 #include <command.h>
   9 #include <dm.h>
  10 #include <fdtdec.h>
  11 #include <sound.h>
  12 #include <asm/global_data.h>
  13
  14 DECLARE_GLOBAL_DATA_PTR;
  15
  16 /* Initilaise sound subsystem */
  17 static int do_init(struct cmd_tbl *cmdtp, int flag, int argc,
  18                    char *const argv[])
  19 {
  20         struct udevice *dev;
  21         int ret;
  22
  23         ret = uclass_first_device_err(UCLASS_SOUND, &dev);
  24         if (!ret)
  25                 ret = sound_setup(dev);
  26         if (ret) {
  27                 printf("Initialise Audio driver failed (ret=%d)\n", ret);
  28                 return CMD_RET_FAILURE;
  29         }
  30
  31         return 0;
  32 }
  33
  34 /* play sound from buffer */
  35 static int do_play(struct cmd_tbl *cmdtp, int flag, int argc,
  36                    char *const argv[])
  37 {
  38         struct udevice *dev;
  39         int ret = 0;
  40         int msec = 1000;
  41         int freq = 400;
  42         bool first = true;
  43
  44         ret = uclass_first_device_err(UCLASS_SOUND, &dev);
  45         if (ret)
  46                 goto err;
  47         --argc;
  48         ++argv;
  49         while (argc || first) {
  50                 first = false;
  51                 if (argc) {
  52                         msec = dectoul(argv[0], NULL);
  53                         --argc;
  54                         ++argv;
  55                 }
  56                 if (argc) {
  57                         freq = dectoul(argv[0], NULL);
  58                         --argc;
  59                         ++argv;
  60                 }
  61                 ret = sound_beep(dev, msec, freq);
  62                 if (ret)
  63                         goto err;
  64         }
  65         return 0;
  66
  67 err:
  68         printf("Sound device failed to play (err=%d)\n", ret);
  69         return CMD_RET_FAILURE;
  70 }
  71
  72 static struct cmd_tbl cmd_sound_sub[] = {
  73         U_BOOT_CMD_MKENT(init, 0, 1, do_init, "", ""),
  74         U_BOOT_CMD_MKENT(play, INT_MAX, 1, do_play, "", ""),
  75 };
  76
  77 /* process sound command */
  78 static int do_sound(struct cmd_tbl *cmdtp, int flag, int argc,
  79                     char *const argv[])
  80 {
  81         struct cmd_tbl *c;
  82
  83         if (argc < 1)
  84                 return CMD_RET_USAGE;
  85
  86         /* Strip off leading 'sound' command argument */
  87         argc--;
  88         argv++;
  89
  90         c = find_cmd_tbl(argv[0], &cmd_sound_sub[0], ARRAY_SIZE(cmd_sound_sub));
  91
  92         if (c)
  93                 return c->cmd(cmdtp, flag, argc, argv);
  94         else
  95                 return CMD_RET_USAGE;
  96 }
  97
  98 U_BOOT_CMD(
  99         sound, INT_MAX, 1, do_sound,
 100         "sound sub-system",
 101         "init - initialise the sound driver\n"
 102         "sound play [[[-q|-s] len [freq]] ...] - play sounds\n"
 103         "  len - duration in ms\n"
 104         "  freq - frequency in Hz\n"
 105 );