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Sound: Add command for audio playback 

This patch adds command to test audio playback.
sound init - Initialises the audio subsystem (i2s and wm8994 codec)
sound play - Plays predefined the audio data when specified length
and frequency.

Signed-off-by: Rajeshwari Shinde <rajeshwari.s@samsung.com>
Acked-by: Simon Glass <sjg@chromium.org>
Signed-off-by: Minkyu Kang <mk7.kang@samsung.com>
This commit is contained in:
Rajeshwari Shinde 2012-10-25 19:49:24 +00:00 committed by Minkyu Kang
parent a2d8e0a717
commit c0c88533ff
2 changed files with 97 additions and 0 deletions
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1
common/Makefile
View File

@ -75,6 +75,7 @@ COBJS-$(CONFIG_CMD_CONSOLE) += cmd_console.o
COBJS-$(CONFIG_CMD_CPLBINFO) += cmd_cplbinfo.o
COBJS-$(CONFIG_DATAFLASH_MMC_SELECT) += cmd_dataflash_mmc_mux.o
COBJS-$(CONFIG_CMD_DATE) += cmd_date.o
COBJS-$(CONFIG_CMD_SOUND) += cmd_sound.o
ifdef CONFIG_4xx
COBJS-$(CONFIG_CMD_SETGETDCR) += cmd_dcr.o
endif

96
common/cmd_sound.c Normal file
View File

@ -0,0 +1,96 @@
/*
* Copyright (C) 2012 Samsung Electronics
* Rajeshwari Shinde <rajeshwari.s@samsung.com>
*
* See file CREDITS for list of people who contributed to this
* project.
*
* This program is free software; you can redistribute it and/or
* modify it under the terms of the GNU General Public License as
* published by the Free Software Foundation; either version 2 of
* the License, or (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software
* Foundation, Inc., 59 Temple Place, Suite 330, Boston,
* MA 02111-1307 USA
*/
#include <common.h>
#include <command.h>
#include <fdtdec.h>
#include <sound.h>
DECLARE_GLOBAL_DATA_PTR;
/* Initilaise sound subsystem */
static int do_init(cmd_tbl_t *cmdtp, int flag, int argc, char *const argv[])
{
int ret;
ret = sound_init();
if (ret) {
printf("Initialise Audio driver failed\n");
return CMD_RET_FAILURE;
}
return 0;
}
/* play sound from buffer */
static int do_play(cmd_tbl_t *cmdtp, int flag, int argc, char *const argv[])
{
int ret = 0;
int msec = 1000;
int freq = 400;
if (argc > 1)
msec = simple_strtoul(argv[1], NULL, 10);
if (argc > 2)
freq = simple_strtoul(argv[2], NULL, 10);
ret = sound_play(msec, freq);
if (ret) {
printf("play failed");
return CMD_RET_FAILURE;
}
return 0;
}
static cmd_tbl_t cmd_sound_sub[] = {
U_BOOT_CMD_MKENT(init, 0, 1, do_init, "", ""),
U_BOOT_CMD_MKENT(play, 2, 1, do_play, "", ""),
};
/* process sound command */
static int do_sound(cmd_tbl_t *cmdtp, int flag, int argc, char *const argv[])
{
cmd_tbl_t *c;
if (argc < 1)
return CMD_RET_USAGE;
/* Strip off leading 'sound' command argument */
argc--;
argv++;
c = find_cmd_tbl(argv[0], &cmd_sound_sub[0], ARRAY_SIZE(cmd_sound_sub));
if (c)
return c->cmd(cmdtp, flag, argc, argv);
else
return CMD_RET_USAGE;
}
U_BOOT_CMD(
sound, 4, 1, do_sound,
"sound sub-system",
"init - initialise the sound driver\n"
"sound play [len] [freq] - play a sound for len ms at freq hz\n"
);