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https://github.com/edk2-porting/linux-next.git
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4266274836
Remove the main ALSA version number from the kernel ALSA driver. The ALSA driver package release diverges from the upstream. This may confuse users to see the same ALSA version for many kernel releases and this version lost it's original purpose and connection. The "ioctl" APIs have own version numbers, so the user space may check for specific API changes only. Signed-off-by: Jaroslav Kysela <perex@perex.cz>
139 lines
3.8 KiB
C
139 lines
3.8 KiB
C
/*
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* Information interface for ALSA driver
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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., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
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*
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*/
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#include <linux/slab.h>
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#include <linux/time.h>
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#include <linux/string.h>
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#include <linux/export.h>
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#include <sound/core.h>
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#include <sound/minors.h>
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#include <sound/info.h>
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#include <linux/utsname.h>
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#include <linux/mutex.h>
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#if defined(CONFIG_SND_OSSEMUL) && defined(CONFIG_PROC_FS)
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/*
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* OSS compatible part
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*/
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static DEFINE_MUTEX(strings);
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static char *snd_sndstat_strings[SNDRV_CARDS][SNDRV_OSS_INFO_DEV_COUNT];
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static struct snd_info_entry *snd_sndstat_proc_entry;
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int snd_oss_info_register(int dev, int num, char *string)
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{
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char *x;
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if (snd_BUG_ON(dev < 0 || dev >= SNDRV_OSS_INFO_DEV_COUNT))
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return -ENXIO;
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if (snd_BUG_ON(num < 0 || num >= SNDRV_CARDS))
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return -ENXIO;
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mutex_lock(&strings);
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if (string == NULL) {
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if ((x = snd_sndstat_strings[num][dev]) != NULL) {
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kfree(x);
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x = NULL;
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}
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} else {
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x = kstrdup(string, GFP_KERNEL);
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if (x == NULL) {
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mutex_unlock(&strings);
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return -ENOMEM;
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}
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}
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snd_sndstat_strings[num][dev] = x;
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mutex_unlock(&strings);
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return 0;
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}
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EXPORT_SYMBOL(snd_oss_info_register);
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static int snd_sndstat_show_strings(struct snd_info_buffer *buf, char *id, int dev)
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{
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int idx, ok = -1;
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char *str;
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snd_iprintf(buf, "\n%s:", id);
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mutex_lock(&strings);
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for (idx = 0; idx < SNDRV_CARDS; idx++) {
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str = snd_sndstat_strings[idx][dev];
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if (str) {
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if (ok < 0) {
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snd_iprintf(buf, "\n");
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ok++;
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}
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snd_iprintf(buf, "%i: %s\n", idx, str);
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}
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}
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mutex_unlock(&strings);
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if (ok < 0)
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snd_iprintf(buf, " NOT ENABLED IN CONFIG\n");
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return ok;
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}
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static void snd_sndstat_proc_read(struct snd_info_entry *entry,
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struct snd_info_buffer *buffer)
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{
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snd_iprintf(buffer, "Sound Driver:3.8.1a-980706 (ALSA emulation code)\n");
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snd_iprintf(buffer, "Kernel: %s %s %s %s %s\n",
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init_utsname()->sysname,
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init_utsname()->nodename,
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init_utsname()->release,
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init_utsname()->version,
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init_utsname()->machine);
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snd_iprintf(buffer, "Config options: 0\n");
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snd_iprintf(buffer, "\nInstalled drivers: \n");
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snd_iprintf(buffer, "Type 10: ALSA emulation\n");
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snd_iprintf(buffer, "\nCard config: \n");
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snd_card_info_read_oss(buffer);
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snd_sndstat_show_strings(buffer, "Audio devices", SNDRV_OSS_INFO_DEV_AUDIO);
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snd_sndstat_show_strings(buffer, "Synth devices", SNDRV_OSS_INFO_DEV_SYNTH);
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snd_sndstat_show_strings(buffer, "Midi devices", SNDRV_OSS_INFO_DEV_MIDI);
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snd_sndstat_show_strings(buffer, "Timers", SNDRV_OSS_INFO_DEV_TIMERS);
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snd_sndstat_show_strings(buffer, "Mixers", SNDRV_OSS_INFO_DEV_MIXERS);
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}
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int snd_info_minor_register(void)
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{
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struct snd_info_entry *entry;
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memset(snd_sndstat_strings, 0, sizeof(snd_sndstat_strings));
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if ((entry = snd_info_create_module_entry(THIS_MODULE, "sndstat", snd_oss_root)) != NULL) {
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entry->c.text.read = snd_sndstat_proc_read;
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if (snd_info_register(entry) < 0) {
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snd_info_free_entry(entry);
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entry = NULL;
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}
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}
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snd_sndstat_proc_entry = entry;
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return 0;
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}
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int snd_info_minor_unregister(void)
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{
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snd_info_free_entry(snd_sndstat_proc_entry);
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snd_sndstat_proc_entry = NULL;
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return 0;
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}
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#endif /* CONFIG_SND_OSSEMUL */
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