alsa-utils/alsactl/init_ucm.c
Jaroslav Kysela af62c72e2d alsactl: suppress no device 'errors' for UCM
This patch adds --ucm-nodev (or -X) option to get those
messages back. The code works only with library 1.2.6+.

By default, these messages are suppressed:

  alsactl[xxx]: alsa-lib parser.c:242:(error_node) UCM is not supported for this HDA model (HDA Intel PCH...)
  alsactl[xxx]: alsa-lib main.c:1405:(snd_use_case_mgr_open) error: failed to import hw:0 use case configuration -6

Fixes: https://github.com/alsa-project/alsa-utils/issues/111
Link: https://lore.kernel.org/alsa-devel/20211027144008.27002-1-tiwai@suse.de/
Link: 23198a72cd
Signed-off-by: Jaroslav Kysela <perex@perex.cz>
2021-10-28 12:16:11 +02:00

75 lines
1.9 KiB
C

/*
* Advanced Linux Sound Architecture Control Program - UCM Initialization
* Copyright (c) by Jaroslav Kysela <perex@perex.cz>
*
*
* 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., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
*
*/
#include "aconfig.h"
#include <stddef.h>
#include "alsactl.h"
#ifdef HAVE_ALSA_USE_CASE_H
#include <alsa/use-case.h>
/*
* Keep it as simple as possible. Execute commands from the
* FixedBootSequence and BootSequence only.
*/
int init_ucm(int flags, int cardno)
{
snd_use_case_mgr_t *uc_mgr;
char id[32], *nodev;
int err;
if (flags & FLAG_UCM_DISABLED)
return -ENXIO;
nodev = (flags & FLAG_UCM_NODEV) ? "" : "-";
snprintf(id, sizeof(id), "%shw:%d", nodev, cardno);
err = snd_use_case_mgr_open(&uc_mgr, id);
if (err < 0)
return err;
if (flags & FLAG_UCM_FBOOT) {
err = snd_use_case_set(uc_mgr, "_fboot", NULL);
if (err == -ENOENT && (flags & FLAG_UCM_BOOT) != 0) {
/* nothing */
} else if (err < 0) {
goto _error;
}
}
if (flags & FLAG_UCM_BOOT) {
err = snd_use_case_set(uc_mgr, "_boot", NULL);
if (err < 0)
goto _error;
if ((flags & FLAG_UCM_DEFAULTS) != 0)
err = snd_use_case_set(uc_mgr, "_defaults", NULL);
}
_error:
snd_use_case_mgr_close(uc_mgr);
return err;
}
#else
int init_ucm(int flags, int cardno)
{
return -ENXIO;
}
#endif