Lines Matching refs:ff
3 * ff-hwdep.c - a part of driver for RME Fireface series
16 #include "ff.h"
21 struct snd_ff *ff = hwdep->private_data;
25 spin_lock_irq(&ff->lock);
27 while (!ff->dev_lock_changed) {
28 prepare_to_wait(&ff->hwdep_wait, &wait, TASK_INTERRUPTIBLE);
29 spin_unlock_irq(&ff->lock);
31 finish_wait(&ff->hwdep_wait, &wait);
34 spin_lock_irq(&ff->lock);
38 if (ff->dev_lock_changed) {
40 event.lock_status.status = (ff->dev_lock_count > 0);
41 ff->dev_lock_changed = false;
46 spin_unlock_irq(&ff->lock);
57 struct snd_ff *ff = hwdep->private_data;
60 poll_wait(file, &ff->hwdep_wait, wait);
62 spin_lock_irq(&ff->lock);
63 if (ff->dev_lock_changed)
67 spin_unlock_irq(&ff->lock);
72 static int hwdep_get_info(struct snd_ff *ff, void __user *arg)
74 struct fw_device *dev = fw_parent_device(ff->unit);
91 static int hwdep_lock(struct snd_ff *ff)
95 spin_lock_irq(&ff->lock);
97 if (ff->dev_lock_count == 0) {
98 ff->dev_lock_count = -1;
104 spin_unlock_irq(&ff->lock);
109 static int hwdep_unlock(struct snd_ff *ff)
113 spin_lock_irq(&ff->lock);
115 if (ff->dev_lock_count == -1) {
116 ff->dev_lock_count = 0;
122 spin_unlock_irq(&ff->lock);
129 struct snd_ff *ff = hwdep->private_data;
131 spin_lock_irq(&ff->lock);
132 if (ff->dev_lock_count == -1)
133 ff->dev_lock_count = 0;
134 spin_unlock_irq(&ff->lock);
142 struct snd_ff *ff = hwdep->private_data;
146 return hwdep_get_info(ff, (void __user *)arg);
148 return hwdep_lock(ff);
150 return hwdep_unlock(ff);
167 int snd_ff_create_hwdep_devices(struct snd_ff *ff)
179 err = snd_hwdep_new(ff->card, ff->card->driver, 0, &hwdep);
183 strcpy(hwdep->name, ff->card->driver);
186 hwdep->private_data = ff;