1/* 2 * Advanced Linux Sound Architecture Control Program - UCM Initialization 3 * Copyright (c) by Jaroslav Kysela <perex@perex.cz> 4 * 5 * 6 * This program is free software; you can redistribute it and/or modify 7 * it under the terms of the GNU General Public License as published by 8 * the Free Software Foundation; either version 2 of the License, or 9 * (at your option) any later version. 10 * 11 * This program is distributed in the hope that it will be useful, 12 * but WITHOUT ANY WARRANTY; without even the implied warranty of 13 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the 14 * GNU General Public License for more details. 15 * 16 * You should have received a copy of the GNU General Public License 17 * along with this program; if not, write to the Free Software 18 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA 19 * 20 */ 21 22#include "aconfig.h" 23#include <stddef.h> 24#include "alsactl.h" 25 26#ifdef HAVE_ALSA_USE_CASE_H 27 28#include <alsa/use-case.h> 29 30/* 31 * Keep it as simple as possible. Execute commands from the 32 * FixedBootSequence and BootSequence only. 33 */ 34int init_ucm(int flags, int cardno) 35{ 36 snd_use_case_mgr_t *uc_mgr; 37 char id[32], *nodev; 38 int err; 39 40 if (flags & FLAG_UCM_DISABLED) { 41 dbg("ucm disabled"); 42 return -ENXIO; 43 } 44 45 nodev = (flags & FLAG_UCM_NODEV) ? "" : "-"; 46 snprintf(id, sizeof(id), "%shw:%d", nodev, cardno); 47 err = snd_use_case_mgr_open(&uc_mgr, id); 48 dbg("ucm open '%s': %d", id, err); 49 if (err < 0) 50 return err; 51 if (flags & FLAG_UCM_FBOOT) { 52 err = snd_use_case_set(uc_mgr, "_fboot", NULL); 53 dbg("ucm _fboot: %d", err); 54 if (err == -ENOENT && (flags & FLAG_UCM_BOOT) != 0) { 55 /* nothing */ 56 } else if (err < 0) { 57 goto _error; 58 } 59 } 60 if (flags & FLAG_UCM_BOOT) { 61 err = snd_use_case_set(uc_mgr, "_boot", NULL); 62 dbg("ucm _boot: %d", err); 63 if (err < 0) 64 goto _error; 65 if ((flags & FLAG_UCM_DEFAULTS) != 0) 66 err = snd_use_case_set(uc_mgr, "_defaults", NULL); 67 } 68_error: 69 snd_use_case_mgr_close(uc_mgr); 70 return err; 71} 72 73#else 74 75int init_ucm(int flags, int cardno) 76{ 77 return -ENXIO; 78} 79 80#endif 81