common/cmd_sound.c

   1 /*
   2  * Copyright (C) 2012 Samsung Electronics
   3  * Rajeshwari Shinde <rajeshwari.s@samsung.com>
   4  *
   5  * See file CREDITS for list of people who contributed to this
   6  * project.
   7  *
   8  * This program is free software; you can redistribute it and/or
   9  * modify it under the terms of the GNU General Public License as
  10  * published by the Free Software Foundation; either version 2 of
  11  * the License, or (at your option) any later version.
  12  *
  13  * This program is distributed in the hope that it will be useful,
  14  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  15  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  16  * GNU General Public License for more details.
  17  *
  18  * You should have received a copy of the GNU General Public License
  19  * along with this program; if not, write to the Free Software
  20  * Foundation, Inc., 59 Temple Place, Suite 330, Boston,
  21  * MA 02111-1307 USA
  22  */
  23
  24 #include <common.h>
  25 #include <command.h>
  26 #include <fdtdec.h>
  27 #include <sound.h>
  28
  29 DECLARE_GLOBAL_DATA_PTR;
  30
  31 /* Initilaise sound subsystem */
  32 static int do_init(cmd_tbl_t *cmdtp, int flag, int argc, char *const argv[])
  33 {
  34         int ret;
  35
  36         ret = sound_init(gd->fdt_blob);
  37         if (ret) {
  38                 printf("Initialise Audio driver failed\n");
  39                 return CMD_RET_FAILURE;
  40         }
  41
  42         return 0;
  43 }
  44
  45 /* play sound from buffer */
  46 static int do_play(cmd_tbl_t *cmdtp, int flag, int argc, char *const argv[])
  47 {
  48         int ret = 0;
  49         int msec = 1000;
  50         int freq = 400;
  51
  52         if (argc > 1)
  53                 msec = simple_strtoul(argv[1], NULL, 10);
  54         if (argc > 2)
  55                 freq = simple_strtoul(argv[2], NULL, 10);
  56
  57         ret = sound_play(msec, freq);
  58         if (ret) {
  59                 printf("play failed");
  60                 return CMD_RET_FAILURE;
  61         }
  62
  63         return 0;
  64 }
  65
  66 static cmd_tbl_t cmd_sound_sub[] = {
  67         U_BOOT_CMD_MKENT(init, 0, 1, do_init, "", ""),
  68         U_BOOT_CMD_MKENT(play, 2, 1, do_play, "", ""),
  69 };
  70
  71 /* process sound command */
  72 static int do_sound(cmd_tbl_t *cmdtp, int flag, int argc, char *const argv[])
  73 {
  74         cmd_tbl_t *c;
  75
  76         if (argc < 1)
  77                 return CMD_RET_USAGE;
  78
  79         /* Strip off leading 'sound' command argument */
  80         argc--;
  81         argv++;
  82
  83         c = find_cmd_tbl(argv[0], &cmd_sound_sub[0], ARRAY_SIZE(cmd_sound_sub));
  84
  85         if (c)
  86                 return c->cmd(cmdtp, flag, argc, argv);
  87         else
  88                 return CMD_RET_USAGE;
  89 }
  90
  91 U_BOOT_CMD(
  92         sound, 4, 1, do_sound,
  93         "sound sub-system",
  94         "init - initialise the sound driver\n"
  95         "sound play [len] [freq] - play a sound for len ms at freq hz\n"
  96 );