ff414fcc44
Make it clear that if only 1 parameter is provided this is the duration.
The ISO symbol for hertz is Hz.
Fixes: c0c88533ff ("Sound: Add command for audio playback")
Signed-off-by: Heinrich Schuchardt <heinrich.schuchardt@canonical.com>
Reviewed-by: Simon Glass <sjg@chromium.org>
91 lines
1.8 KiB
C
91 lines
1.8 KiB
C
// SPDX-License-Identifier: GPL-2.0+
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/*
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* Copyright (C) 2012 Samsung Electronics
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* Rajeshwari Shinde <rajeshwari.s@samsung.com>
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*/
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#include <common.h>
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#include <command.h>
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#include <dm.h>
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#include <fdtdec.h>
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#include <sound.h>
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#include <asm/global_data.h>
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DECLARE_GLOBAL_DATA_PTR;
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/* Initilaise sound subsystem */
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static int do_init(struct cmd_tbl *cmdtp, int flag, int argc,
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char *const argv[])
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{
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struct udevice *dev;
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int ret;
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ret = uclass_first_device_err(UCLASS_SOUND, &dev);
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if (!ret)
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ret = sound_setup(dev);
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if (ret) {
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printf("Initialise Audio driver failed (ret=%d)\n", ret);
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return CMD_RET_FAILURE;
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}
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return 0;
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}
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/* play sound from buffer */
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static int do_play(struct cmd_tbl *cmdtp, int flag, int argc,
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char *const argv[])
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{
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struct udevice *dev;
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int ret = 0;
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int msec = 1000;
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int freq = 400;
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if (argc > 1)
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msec = dectoul(argv[1], NULL);
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if (argc > 2)
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freq = dectoul(argv[2], NULL);
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ret = uclass_first_device_err(UCLASS_SOUND, &dev);
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if (!ret)
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ret = sound_beep(dev, msec, freq);
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if (ret) {
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printf("Sound device failed to play (err=%d)\n", ret);
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return CMD_RET_FAILURE;
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}
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return 0;
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}
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static struct cmd_tbl cmd_sound_sub[] = {
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U_BOOT_CMD_MKENT(init, 0, 1, do_init, "", ""),
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U_BOOT_CMD_MKENT(play, 2, 1, do_play, "", ""),
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};
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/* process sound command */
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static int do_sound(struct cmd_tbl *cmdtp, int flag, int argc,
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char *const argv[])
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{
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struct cmd_tbl *c;
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if (argc < 1)
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return CMD_RET_USAGE;
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/* Strip off leading 'sound' command argument */
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argc--;
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argv++;
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c = find_cmd_tbl(argv[0], &cmd_sound_sub[0], ARRAY_SIZE(cmd_sound_sub));
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if (c)
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return c->cmd(cmdtp, flag, argc, argv);
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else
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return CMD_RET_USAGE;
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}
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U_BOOT_CMD(
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sound, 4, 1, do_sound,
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"sound sub-system",
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"init - initialise the sound driver\n"
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"sound play [len [freq]] - play a sound for len ms at freq Hz\n"
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);
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