aboutsummaryrefslogtreecommitdiff
diff options
context:
space:
mode:
authorClemens Ladisch <clemens@ladisch.de>2005-11-20 14:09:05 +0100
committerJaroslav Kysela <perex@suse.cz>2006-01-03 12:29:21 +0100
commitd001544ded23ddb1116f945ccc2d89a7f98ab7e8 (patch)
tree721fbc6355acfb886817e2b120f198383c5e6ae6
parent204bdb1b50013c7aa3922d8b66df943123087bd8 (diff)
[ALSA] dynamic minors (6/6): increase maximum number of sound cards
Modules: ALSA Core,Memalloc module,ALSA sequencer With dynamic minor numbers, we can increase the number of sound cards. This requires that the sequencer client numbers of some kernel drivers are allocated dynamically, too. Signed-off-by: Clemens Ladisch <clemens@ladisch.de>
-rw-r--r--include/sound/driver.h7
-rw-r--r--sound/core/init.c18
-rw-r--r--sound/core/memalloc.c4
-rw-r--r--sound/core/seq/seq_clientmgr.c31
-rw-r--r--sound/core/sound.c6
-rw-r--r--sound/core/sound_oss.c4
6 files changed, 49 insertions, 21 deletions
diff --git a/include/sound/driver.h b/include/sound/driver.h
index 3f0416ac24d..89c6a73f392 100644
--- a/include/sound/driver.h
+++ b/include/sound/driver.h
@@ -28,7 +28,12 @@
#include <linux/config.h>
-#define SNDRV_CARDS 8 /* number of supported soundcards - don't change - minor numbers */
+/* number of supported soundcards */
+#ifdef CONFIG_SND_DYNAMIC_MINORS
+#define SNDRV_CARDS 32
+#else
+#define SNDRV_CARDS 8 /* don't change - minor numbers */
+#endif
#ifndef CONFIG_SND_MAJOR /* standard configuration */
#define CONFIG_SND_MAJOR 116
diff --git a/sound/core/init.c b/sound/core/init.c
index 728bb2ce0bc..58e17d385f8 100644
--- a/sound/core/init.c
+++ b/sound/core/init.c
@@ -338,7 +338,7 @@ int snd_card_free_in_thread(struct snd_card *card)
static void choose_default_id(struct snd_card *card)
{
- int i, len, idx_flag = 0, loops = 8;
+ int i, len, idx_flag = 0, loops = SNDRV_CARDS;
char *id, *spos;
id = spos = card->shortname;
@@ -380,9 +380,12 @@ static void choose_default_id(struct snd_card *card)
__change:
len = strlen(id);
- if (idx_flag)
- id[len-1]++;
- else if ((size_t)len <= sizeof(card->id) - 3) {
+ if (idx_flag) {
+ if (id[len-1] != '9')
+ id[len-1]++;
+ else
+ id[len-1] = 'A';
+ } else if ((size_t)len <= sizeof(card->id) - 3) {
strcat(id, "_1");
idx_flag++;
} else {
@@ -461,12 +464,12 @@ static void snd_card_info_read(struct snd_info_entry *entry,
read_lock(&snd_card_rwlock);
if ((card = snd_cards[idx]) != NULL) {
count++;
- snd_iprintf(buffer, "%i [%-15s]: %s - %s\n",
+ snd_iprintf(buffer, "%2i [%-15s]: %s - %s\n",
idx,
card->id,
card->driver,
card->shortname);
- snd_iprintf(buffer, " %s\n",
+ snd_iprintf(buffer, " %s\n",
card->longname);
}
read_unlock(&snd_card_rwlock);
@@ -508,7 +511,8 @@ static void snd_card_module_info_read(struct snd_info_entry *entry,
for (idx = 0; idx < SNDRV_CARDS; idx++) {
read_lock(&snd_card_rwlock);
if ((card = snd_cards[idx]) != NULL)
- snd_iprintf(buffer, "%i %s\n", idx, card->module->name);
+ snd_iprintf(buffer, "%2i %s\n",
+ idx, card->module->name);
read_unlock(&snd_card_rwlock);
}
}
diff --git a/sound/core/memalloc.c b/sound/core/memalloc.c
index e4b8959dd4b..19b3dcbb09c 100644
--- a/sound/core/memalloc.c
+++ b/sound/core/memalloc.c
@@ -43,10 +43,6 @@ MODULE_DESCRIPTION("Memory allocator for ALSA system.");
MODULE_LICENSE("GPL");
-#ifndef SNDRV_CARDS
-#define SNDRV_CARDS 8
-#endif
-
/*
*/
diff --git a/sound/core/seq/seq_clientmgr.c b/sound/core/seq/seq_clientmgr.c
index 95bd5ae92b9..2a9c6b316b1 100644
--- a/sound/core/seq/seq_clientmgr.c
+++ b/sound/core/seq/seq_clientmgr.c
@@ -47,6 +47,10 @@
*
*/
+/* range for dynamically allocated client numbers of kernel drivers */
+#define SNDRV_SEQ_DYNAMIC_CLIENT_BEGIN 16
+#define SNDRV_SEQ_DYNAMIC_CLIENT_END 48
+
#define SNDRV_SEQ_LFLG_INPUT 0x0001
#define SNDRV_SEQ_LFLG_OUTPUT 0x0002
#define SNDRV_SEQ_LFLG_OPEN (SNDRV_SEQ_LFLG_INPUT|SNDRV_SEQ_LFLG_OUTPUT)
@@ -203,7 +207,8 @@ int __init client_init_data(void)
}
-static struct snd_seq_client *seq_create_client1(int client_index, int poolsize)
+static struct snd_seq_client *seq_create_client1(int client_index, int poolsize,
+ int kernel_client)
{
unsigned long flags;
int c;
@@ -227,7 +232,15 @@ static struct snd_seq_client *seq_create_client1(int client_index, int poolsize)
/* find free slot in the client table */
spin_lock_irqsave(&clients_lock, flags);
if (client_index < 0) {
- for (c = 128; c < SNDRV_SEQ_MAX_CLIENTS; c++) {
+ int cmin, cmax;
+ if (kernel_client) {
+ cmin = SNDRV_SEQ_DYNAMIC_CLIENT_BEGIN;
+ cmax = SNDRV_SEQ_DYNAMIC_CLIENT_END;
+ } else {
+ cmin = 128;
+ cmax = SNDRV_SEQ_MAX_CLIENTS;
+ }
+ for (c = cmin; c < cmax; c++) {
if (clienttab[c] || clienttablock[c])
continue;
clienttab[client->number = c] = client;
@@ -306,7 +319,7 @@ static int snd_seq_open(struct inode *inode, struct file *file)
if (down_interruptible(&register_mutex))
return -ERESTARTSYS;
- client = seq_create_client1(-1, SNDRV_SEQ_DEFAULT_EVENTS);
+ client = seq_create_client1(-1, SNDRV_SEQ_DEFAULT_EVENTS, 0);
if (client == NULL) {
up(&register_mutex);
return -ENOMEM; /* failure code */
@@ -2212,13 +2225,19 @@ int snd_seq_create_kernel_client(struct snd_card *card, int client_index,
return -EINVAL;
if (card == NULL && client_index > 63)
return -EINVAL;
- if (card)
- client_index += 64 + (card->number << 2);
if (down_interruptible(&register_mutex))
return -ERESTARTSYS;
+
+ if (card) {
+ if (card->number < 16)
+ client_index += 64 + (card->number << 2);
+ else
+ client_index = -1;
+ }
+
/* empty write queue as default */
- client = seq_create_client1(client_index, 0);
+ client = seq_create_client1(client_index, 0, 1);
if (client == NULL) {
up(&register_mutex);
return -EBUSY; /* failure code */
diff --git a/sound/core/sound.c b/sound/core/sound.c
index 5e22283078f..5febd0545d7 100644
--- a/sound/core/sound.c
+++ b/sound/core/sound.c
@@ -358,15 +358,15 @@ static void snd_minor_info_read(struct snd_info_entry *entry, struct snd_info_bu
continue;
if (mptr->card >= 0) {
if (mptr->device >= 0)
- snd_iprintf(buffer, "%3i: [%i-%2i]: %s\n",
+ snd_iprintf(buffer, "%3i: [%2i-%2i]: %s\n",
minor, mptr->card, mptr->device,
snd_device_type_name(mptr->type));
else
- snd_iprintf(buffer, "%3i: [%i] : %s\n",
+ snd_iprintf(buffer, "%3i: [%2i] : %s\n",
minor, mptr->card,
snd_device_type_name(mptr->type));
} else
- snd_iprintf(buffer, "%3i: : %s\n", minor,
+ snd_iprintf(buffer, "%3i: : %s\n", minor,
snd_device_type_name(mptr->type));
}
up(&sound_mutex);
diff --git a/sound/core/sound_oss.c b/sound/core/sound_oss.c
index b9e89cac4c5..3ae1c0d7ffd 100644
--- a/sound/core/sound_oss.c
+++ b/sound/core/sound_oss.c
@@ -105,6 +105,8 @@ int snd_register_oss_device(int type, struct snd_card *card, int dev,
int register1 = -1, register2 = -1;
struct device *carddev = NULL;
+ if (card && card->number >= 8)
+ return 0; /* ignore silently */
if (minor < 0)
return minor;
preg = kmalloc(sizeof(struct snd_minor), GFP_KERNEL);
@@ -162,6 +164,8 @@ int snd_unregister_oss_device(int type, struct snd_card *card, int dev)
int track2 = -1;
struct snd_minor *mptr;
+ if (card && card->number >= 8)
+ return 0;
if (minor < 0)
return minor;
down(&sound_oss_mutex);