[people/arne_f/kernel.git] / sound / core / info_oss.c

/*
 *  Information interface for ALSA driver
 *  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., 59 Temple Place, Suite 330, Boston, MA  02111-1307 USA
 *
 */

#include <linux/slab.h>
#include <linux/time.h>
#include <linux/string.h>
#include <linux/export.h>
#include <sound/core.h>
#include <sound/minors.h>
#include <sound/info.h>
#include <linux/utsname.h>
#include <linux/mutex.h>

/*
 *  OSS compatible part
 */

static DEFINE_MUTEX(strings);
static char *snd_sndstat_strings[SNDRV_CARDS][SNDRV_OSS_INFO_DEV_COUNT];

int snd_oss_info_register(int dev, int num, char *string)
{
	char *x;

	if (snd_BUG_ON(dev < 0 || dev >= SNDRV_OSS_INFO_DEV_COUNT))
		return -ENXIO;
	if (snd_BUG_ON(num < 0 || num >= SNDRV_CARDS))
		return -ENXIO;
	mutex_lock(&strings);
	if (string == NULL) {
		if ((x = snd_sndstat_strings[num][dev]) != NULL) {
			kfree(x);
			x = NULL;
		}
	} else {
		x = kstrdup(string, GFP_KERNEL);
		if (x == NULL) {
			mutex_unlock(&strings);
			return -ENOMEM;
		}
	}
	snd_sndstat_strings[num][dev] = x;
	mutex_unlock(&strings);
	return 0;
}
EXPORT_SYMBOL(snd_oss_info_register);

static int snd_sndstat_show_strings(struct snd_info_buffer *buf, char *id, int dev)
{
	int idx, ok = -1;
	char *str;

	snd_iprintf(buf, "\n%s:", id);
	mutex_lock(&strings);
	for (idx = 0; idx < SNDRV_CARDS; idx++) {
		str = snd_sndstat_strings[idx][dev];
		if (str) {
			if (ok < 0) {
				snd_iprintf(buf, "\n");
				ok++;
			}
			snd_iprintf(buf, "%i: %s\n", idx, str);
		}
	}
	mutex_unlock(&strings);
	if (ok < 0)
		snd_iprintf(buf, " NOT ENABLED IN CONFIG\n");
	return ok;
}

static void snd_sndstat_proc_read(struct snd_info_entry *entry,
				  struct snd_info_buffer *buffer)
{
	snd_iprintf(buffer, "Sound Driver:3.8.1a-980706 (ALSA emulation code)\n");
	snd_iprintf(buffer, "Kernel: %s %s %s %s %s\n",
		    init_utsname()->sysname,
		    init_utsname()->nodename,
		    init_utsname()->release,
		    init_utsname()->version,
		    init_utsname()->machine);
	snd_iprintf(buffer, "Config options: 0\n");
	snd_iprintf(buffer, "\nInstalled drivers: \n");
	snd_iprintf(buffer, "Type 10: ALSA emulation\n");
	snd_iprintf(buffer, "\nCard config: \n");
	snd_card_info_read_oss(buffer);
	snd_sndstat_show_strings(buffer, "Audio devices", SNDRV_OSS_INFO_DEV_AUDIO);
	snd_sndstat_show_strings(buffer, "Synth devices", SNDRV_OSS_INFO_DEV_SYNTH);
	snd_sndstat_show_strings(buffer, "Midi devices", SNDRV_OSS_INFO_DEV_MIDI);
	snd_sndstat_show_strings(buffer, "Timers", SNDRV_OSS_INFO_DEV_TIMERS);
	snd_sndstat_show_strings(buffer, "Mixers", SNDRV_OSS_INFO_DEV_MIXERS);
}

int __init snd_info_minor_register(void)
{
	struct snd_info_entry *entry;

	memset(snd_sndstat_strings, 0, sizeof(snd_sndstat_strings));
	entry = snd_info_create_module_entry(THIS_MODULE, "sndstat",
					     snd_oss_root);
	if (!entry)
		return -ENOMEM;
	entry->c.text.read = snd_sndstat_proc_read;
	return snd_info_register(entry); /* freed in error path */
}
Commit	Line	Data
1da177e4 LT	1	/*
1da177e4 LT	2	* Information interface for ALSA driver
c1017a4c	3	* Copyright (c) by Jaroslav Kysela <perex@perex.cz>
1da177e4 LT	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., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
	19	*
	20	*/
	21
1da177e4 LT	22	#include <linux/slab.h>
1da177e4 LT	23	#include <linux/time.h>
543537bd	24	#include <linux/string.h>
d81a6d71	25	#include <linux/export.h>
1da177e4 LT	26	#include <sound/core.h>
	27	#include <sound/minors.h>
	28	#include <sound/info.h>
1da177e4	29	#include <linux/utsname.h>
1a60d4c5	30	#include <linux/mutex.h>
1da177e4	31
1da177e4 LT	32	/*
	33	* OSS compatible part
	34	*/
	35
1a60d4c5	36	static DEFINE_MUTEX(strings);
1da177e4	37	static char *snd_sndstat_strings[SNDRV_CARDS][SNDRV_OSS_INFO_DEV_COUNT];
1da177e4 LT	38
	39	int snd_oss_info_register(int dev, int num, char *string)
	40	{
	41	char *x;
	42
7eaa943c TI	43	if (snd_BUG_ON(dev < 0 \|\| dev >= SNDRV_OSS_INFO_DEV_COUNT))
	44	return -ENXIO;
	45	if (snd_BUG_ON(num < 0 \|\| num >= SNDRV_CARDS))
	46	return -ENXIO;
1a60d4c5	47	mutex_lock(&strings);
1da177e4 LT	48	if (string == NULL) {
	49	if ((x = snd_sndstat_strings[num][dev]) != NULL) {
	50	kfree(x);
	51	x = NULL;
	52	}
	53	} else {
543537bd	54	x = kstrdup(string, GFP_KERNEL);
1da177e4	55	if (x == NULL) {
1a60d4c5	56	mutex_unlock(&strings);
1da177e4 LT	57	return -ENOMEM;
	58	}
	59	}
	60	snd_sndstat_strings[num][dev] = x;
1a60d4c5	61	mutex_unlock(&strings);
1da177e4 LT	62	return 0;
1da177e4 LT	63	}
c0d3fb39 TI	64	EXPORT_SYMBOL(snd_oss_info_register);
c0d3fb39 TI	65
174c1f65	66	static int snd_sndstat_show_strings(struct snd_info_buffer buf, char id, int dev)
1da177e4 LT	67	{
	68	int idx, ok = -1;
	69	char *str;
	70
	71	snd_iprintf(buf, "\n%s:", id);
1a60d4c5	72	mutex_lock(&strings);
1da177e4 LT	73	for (idx = 0; idx < SNDRV_CARDS; idx++) {
	74	str = snd_sndstat_strings[idx][dev];
	75	if (str) {
	76	if (ok < 0) {
	77	snd_iprintf(buf, "\n");
	78	ok++;
	79	}
	80	snd_iprintf(buf, "%i: %s\n", idx, str);
	81	}
	82	}
1a60d4c5	83	mutex_unlock(&strings);
1da177e4 LT	84	if (ok < 0)
	85	snd_iprintf(buf, " NOT ENABLED IN CONFIG\n");
	86	return ok;
	87	}
	88
174c1f65 TI	89	static void snd_sndstat_proc_read(struct snd_info_entry *entry,
174c1f65 TI	90	struct snd_info_buffer *buffer)
1da177e4	91	{
42662748	92	snd_iprintf(buffer, "Sound Driver:3.8.1a-980706 (ALSA emulation code)\n");
1da177e4	93	snd_iprintf(buffer, "Kernel: %s %s %s %s %s\n",
96b644bd SH	94	init_utsname()->sysname,
	95	init_utsname()->nodename,
	96	init_utsname()->release,
	97	init_utsname()->version,
	98	init_utsname()->machine);
1da177e4 LT	99	snd_iprintf(buffer, "Config options: 0\n");
	100	snd_iprintf(buffer, "\nInstalled drivers: \n");
	101	snd_iprintf(buffer, "Type 10: ALSA emulation\n");
	102	snd_iprintf(buffer, "\nCard config: \n");
	103	snd_card_info_read_oss(buffer);
	104	snd_sndstat_show_strings(buffer, "Audio devices", SNDRV_OSS_INFO_DEV_AUDIO);
	105	snd_sndstat_show_strings(buffer, "Synth devices", SNDRV_OSS_INFO_DEV_SYNTH);
	106	snd_sndstat_show_strings(buffer, "Midi devices", SNDRV_OSS_INFO_DEV_MIDI);
	107	snd_sndstat_show_strings(buffer, "Timers", SNDRV_OSS_INFO_DEV_TIMERS);
	108	snd_sndstat_show_strings(buffer, "Mixers", SNDRV_OSS_INFO_DEV_MIXERS);
	109	}
	110
a0dca822	111	int __init snd_info_minor_register(void)
1da177e4	112	{
174c1f65	113	struct snd_info_entry *entry;
1da177e4 LT	114
1da177e4 LT	115	memset(snd_sndstat_strings, 0, sizeof(snd_sndstat_strings));
a0dca822 TI	116	entry = snd_info_create_module_entry(THIS_MODULE, "sndstat",
	117	snd_oss_root);
	118	if (!entry)
	119	return -ENOMEM;
	120	entry->c.text.read = snd_sndstat_proc_read;
	121	return snd_info_register(entry); /* freed in error path */
1da177e4	122	}