[PATCH] Assign device pointer to OSS devices
Takashi Iwai [Tue, 30 Aug 2005 06:58:37 +0000 (08:58 +0200)]
Add register_sound_special_device() function to allow assignment of
device pointer to a specific OSS device for HAL.

Signed-off-by: Takashi Iwai <tiwai@suse.de>

include/linux/sound.h
sound/core/sound_oss.c
sound/sound_core.c

index 428f597..72b9af4 100644 (file)
@@ -29,7 +29,9 @@
  *     Sound core interface functions
  */
  
+struct device;
 extern int register_sound_special(struct file_operations *fops, int unit);
+extern int register_sound_special_device(struct file_operations *fops, int unit, struct device *dev);
 extern int register_sound_mixer(struct file_operations *fops, int dev);
 extern int register_sound_midi(struct file_operations *fops, int dev);
 extern int register_sound_dsp(struct file_operations *fops, int dev);
index de39d21..e401c67 100644 (file)
@@ -98,6 +98,7 @@ int snd_register_oss_device(int type, snd_card_t * card, int dev, snd_minor_t *
        int cidx = SNDRV_MINOR_OSS_CARD(minor);
        int track2 = -1;
        int register1 = -1, register2 = -1;
+       struct device *carddev = NULL;
 
        if (minor < 0)
                return minor;
@@ -121,11 +122,13 @@ int snd_register_oss_device(int type, snd_card_t * card, int dev, snd_minor_t *
                track2 = SNDRV_MINOR_OSS(cidx, SNDRV_MINOR_OSS_DMMIDI1);
                break;
        }
-       register1 = register_sound_special(reg->f_ops, minor);
+       if (card)
+               carddev = card->dev;
+       register1 = register_sound_special_device(reg->f_ops, minor, carddev);
        if (register1 != minor)
                goto __end;
        if (track2 >= 0) {
-               register2 = register_sound_special(reg->f_ops, track2);
+               register2 = register_sound_special_device(reg->f_ops, track2, carddev);
                if (register2 != track2)
                        goto __end;
        }
index 21a69e0..954f994 100644 (file)
@@ -153,7 +153,7 @@ static DEFINE_SPINLOCK(sound_loader_lock);
  *     list. Acquires locks as needed
  */
 
-static int sound_insert_unit(struct sound_unit **list, struct file_operations *fops, int index, int low, int top, const char *name, umode_t mode)
+static int sound_insert_unit(struct sound_unit **list, struct file_operations *fops, int index, int low, int top, const char *name, umode_t mode, struct device *dev)
 {
        struct sound_unit *s = kmalloc(sizeof(*s), GFP_KERNEL);
        int r;
@@ -175,7 +175,7 @@ static int sound_insert_unit(struct sound_unit **list, struct file_operations *f
        devfs_mk_cdev(MKDEV(SOUND_MAJOR, s->unit_minor),
                        S_IFCHR | mode, s->name);
        class_device_create(sound_class, MKDEV(SOUND_MAJOR, s->unit_minor),
-                               NULL, s->name+6);
+                           dev, s->name+6);
        return r;
 
  fail:
@@ -227,16 +227,18 @@ static void sound_remove_unit(struct sound_unit **list, int unit)
 static struct sound_unit *chains[SOUND_STEP];
 
 /**
- *     register_sound_special - register a special sound node
+ *     register_sound_special_device - register a special sound node
  *     @fops: File operations for the driver
  *     @unit: Unit number to allocate
+ *      @dev: device pointer
  *
  *     Allocate a special sound device by minor number from the sound
  *     subsystem. The allocated number is returned on succes. On failure
  *     a negative error code is returned.
  */
  
-int register_sound_special(struct file_operations *fops, int unit)
+int register_sound_special_device(struct file_operations *fops, int unit,
+                                 struct device *dev)
 {
        const int chain = unit % SOUND_STEP;
        int max_unit = 128 + chain;
@@ -294,9 +296,16 @@ int register_sound_special(struct file_operations *fops, int unit)
                break;
        }
        return sound_insert_unit(&chains[chain], fops, -1, unit, max_unit,
-                                name, S_IRUSR | S_IWUSR);
+                                name, S_IRUSR | S_IWUSR, dev);
 }
  
+EXPORT_SYMBOL(register_sound_special_device);
+
+int register_sound_special(struct file_operations *fops, int unit)
+{
+       return register_sound_special_device(fops, unit, NULL);
+}
+
 EXPORT_SYMBOL(register_sound_special);
 
 /**
@@ -312,7 +321,7 @@ EXPORT_SYMBOL(register_sound_special);
 int register_sound_mixer(struct file_operations *fops, int dev)
 {
        return sound_insert_unit(&chains[0], fops, dev, 0, 128,
-                                "mixer", S_IRUSR | S_IWUSR);
+                                "mixer", S_IRUSR | S_IWUSR, NULL);
 }
 
 EXPORT_SYMBOL(register_sound_mixer);
@@ -330,7 +339,7 @@ EXPORT_SYMBOL(register_sound_mixer);
 int register_sound_midi(struct file_operations *fops, int dev)
 {
        return sound_insert_unit(&chains[2], fops, dev, 2, 130,
-                                "midi", S_IRUSR | S_IWUSR);
+                                "midi", S_IRUSR | S_IWUSR, NULL);
 }
 
 EXPORT_SYMBOL(register_sound_midi);
@@ -356,7 +365,7 @@ EXPORT_SYMBOL(register_sound_midi);
 int register_sound_dsp(struct file_operations *fops, int dev)
 {
        return sound_insert_unit(&chains[3], fops, dev, 3, 131,
-                                "dsp", S_IWUSR | S_IRUSR);
+                                "dsp", S_IWUSR | S_IRUSR, NULL);
 }
 
 EXPORT_SYMBOL(register_sound_dsp);
@@ -375,7 +384,7 @@ EXPORT_SYMBOL(register_sound_dsp);
 int register_sound_synth(struct file_operations *fops, int dev)
 {
        return sound_insert_unit(&chains[9], fops, dev, 9, 137,
-                                "synth", S_IRUSR | S_IWUSR);
+                                "synth", S_IRUSR | S_IWUSR, NULL);
 }
 
 EXPORT_SYMBOL(register_sound_synth);