[U-Boot] [PATCH 3/9 V3] Sound: Add command for audio playback

[Simon Glass]

On Mon, Oct 22, 2012 at 11:57 PM, Rajeshwari Shinde
<rajeshwari.s at samsung.com> wrote:
> 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 at samsung.com>

Acked-by: Simon Glass <sjg at chromium.org>

> ---
> Changes in V2:
> - None
> Changes in V3:
> - Incorporated comments from Simon Glass.
>  common/Makefile    |    1 +
>  common/cmd_sound.c |   96 ++++++++++++++++++++++++++++++++++++++++++++++++++++
>  2 files changed, 97 insertions(+), 0 deletions(-)
>  create mode 100644 common/cmd_sound.c
>
> diff --git a/common/Makefile b/common/Makefile
> index 5442fbb..c0aa4a3 100644
> --- a/common/Makefile
> +++ b/common/Makefile
> @@ -74,6 +74,7 @@ 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
> diff --git a/common/cmd_sound.c b/common/cmd_sound.c
> new file mode 100644
> index 0000000..459d1eb
> --- /dev/null
> +++ b/common/cmd_sound.c
> @@ -0,0 +1,96 @@
> +/*
> + * Copyright (C) 2012 Samsung Electronics
> + * Rajeshwari Shinde <rajeshwari.s at 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"
> +);
> --
> 1.7.4.4
>