mirror of
https://github.com/alsa-project/alsa-utils
synced 2024-09-16 16:28:04 +02:00
81 lines
2 KiB
C
81 lines
2 KiB
C
/*
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* Advanced Linux Sound Architecture Control Program - UCM Initialization
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* Copyright (c) by Jaroslav Kysela <perex@perex.cz>
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*
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation; either version 2 of the License, or
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* (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program; if not, write to the Free Software
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* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
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*
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*/
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#include "aconfig.h"
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#include <stddef.h>
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#include "alsactl.h"
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#ifdef HAVE_ALSA_USE_CASE_H
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#include <alsa/use-case.h>
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/*
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* Keep it as simple as possible. Execute commands from the
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* FixedBootSequence and BootSequence only.
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*/
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int init_ucm(int flags, int cardno)
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{
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snd_use_case_mgr_t *uc_mgr;
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char id[32], *nodev;
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int err;
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if (flags & FLAG_UCM_DISABLED) {
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dbg("ucm disabled");
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return -ENXIO;
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}
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nodev = (flags & FLAG_UCM_NODEV) ? "" : "-";
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snprintf(id, sizeof(id), "%shw:%d", nodev, cardno);
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err = snd_use_case_mgr_open(&uc_mgr, id);
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dbg("ucm open '%s': %d", id, err);
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if (err < 0)
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return err;
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if (flags & FLAG_UCM_FBOOT) {
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err = snd_use_case_set(uc_mgr, "_fboot", NULL);
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dbg("ucm _fboot: %d", err);
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if (err == -ENOENT && (flags & FLAG_UCM_BOOT) != 0) {
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/* nothing */
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} else if (err < 0) {
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goto _error;
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}
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}
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if (flags & FLAG_UCM_BOOT) {
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err = snd_use_case_set(uc_mgr, "_boot", NULL);
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dbg("ucm _boot: %d", err);
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if (err < 0)
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goto _error;
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if ((flags & FLAG_UCM_DEFAULTS) != 0)
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err = snd_use_case_set(uc_mgr, "_defaults", NULL);
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}
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_error:
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snd_use_case_mgr_close(uc_mgr);
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return err;
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}
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#else
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int init_ucm(int flags, int cardno)
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{
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return -ENXIO;
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}
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#endif
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