#include <linux/spinlock.h>
#include <linux/smp_lock.h>
#include <linux/ac97_codec.h>
+#include <linux/mutex.h>
+
#include <asm/io.h>
#include <asm/uaccess.h>
#include <asm/hardirq.h>
-#include <asm/mach-au1x00/au1000.h>
#include <asm/mach-au1x00/au1xxx_psc.h>
#include <asm/mach-au1x00/au1xxx_dbdma.h>
+#include <asm/mach-au1x00/au1xxx.h>
#undef OSS_DOCUMENTED_MIXER_SEMANTICS
* 0 = no VRA, 1 = use VRA if codec supports it
*/
static int vra = 1;
-MODULE_PARM(vra, "i");
+module_param(vra, bool, 0);
MODULE_PARM_DESC(vra, "if 1 use VRA if codec supports it");
static struct au1550_state {
int no_vra; /* do not use VRA */
spinlock_t lock;
- struct semaphore open_sem;
- struct semaphore sem;
+ struct mutex open_mutex;
+ struct mutex sem;
mode_t open_mode;
wait_queue_head_t open_wait;
}
if (i == POLL_COUNT) {
err("rdcodec: read poll expired!");
- return 0;
+ data = 0;
+ goto out;
}
/* wait for command done?
}
if (i == POLL_COUNT) {
err("rdcodec: read cmdwait expired!");
- return 0;
+ data = 0;
+ goto out;
}
data = au_readl(PSC_AC97CDC) & 0xffff;
au_writel(PSC_AC97EVNT_CD, PSC_AC97EVNT);
au_sync();
+ out:
spin_unlock_irqrestore(&s->lock, flags);
return data;
}
-static void
-dac_dma_interrupt(int irq, void *dev_id, struct pt_regs *regs)
+static void dac_dma_interrupt(int irq, void *dev_id)
{
struct au1550_state *s = (struct au1550_state *) dev_id;
struct dmabuf *db = &s->dma_dac;
}
-static void
-adc_dma_interrupt(int irq, void *dev_id, struct pt_regs *regs)
+static void adc_dma_interrupt(int irq, void *dev_id)
{
struct au1550_state *s = (struct au1550_state *)dev_id;
struct dmabuf *dp = &s->dma_adc;
count *= db->cnt_factor;
- down(&s->sem);
+ mutex_lock(&s->sem);
add_wait_queue(&db->wait, &wait);
while (count > 0) {
ret = -EAGAIN;
goto out;
}
- up(&s->sem);
+ mutex_unlock(&s->sem);
schedule();
if (signal_pending(current)) {
if (!ret)
ret = -ERESTARTSYS;
goto out2;
}
- down(&s->sem);
+ mutex_lock(&s->sem);
}
} while (avail <= 0);
} /* while (count > 0) */
out:
- up(&s->sem);
+ mutex_unlock(&s->sem);
out2:
remove_wait_queue(&db->wait, &wait);
set_current_state(TASK_RUNNING);
count *= db->cnt_factor;
- down(&s->sem);
+ mutex_lock(&s->sem);
add_wait_queue(&db->wait, &wait);
while (count > 0) {
ret = -EAGAIN;
goto out;
}
- up(&s->sem);
+ mutex_unlock(&s->sem);
schedule();
if (signal_pending(current)) {
if (!ret)
ret = -ERESTARTSYS;
goto out2;
}
- down(&s->sem);
+ mutex_lock(&s->sem);
}
} while (avail <= 0);
} /* while (count > 0) */
out:
- up(&s->sem);
+ mutex_unlock(&s->sem);
out2:
remove_wait_queue(&db->wait, &wait);
set_current_state(TASK_RUNNING);
int ret = 0;
lock_kernel();
- down(&s->sem);
+ mutex_lock(&s->sem);
if (vma->vm_flags & VM_WRITE)
db = &s->dma_dac;
else if (vma->vm_flags & VM_READ)
vma->vm_flags &= ~VM_IO;
db->mapped = 1;
out:
- up(&s->sem);
+ mutex_unlock(&s->sem);
unlock_kernel();
return ret;
}
file->private_data = s;
/* wait for device to become free */
- down(&s->open_sem);
+ mutex_lock(&s->open_mutex);
while (s->open_mode & file->f_mode) {
if (file->f_flags & O_NONBLOCK) {
- up(&s->open_sem);
+ mutex_unlock(&s->open_mutex);
return -EBUSY;
}
add_wait_queue(&s->open_wait, &wait);
__set_current_state(TASK_INTERRUPTIBLE);
- up(&s->open_sem);
+ mutex_unlock(&s->open_mutex);
schedule();
remove_wait_queue(&s->open_wait, &wait);
set_current_state(TASK_RUNNING);
if (signal_pending(current))
return -ERESTARTSYS;
- down(&s->open_sem);
+ mutex_lock(&s->open_mutex);
}
stop_dac(s);
}
s->open_mode |= file->f_mode & (FMODE_READ | FMODE_WRITE);
- up(&s->open_sem);
- init_MUTEX(&s->sem);
+ mutex_unlock(&s->open_mutex);
+ mutex_init(&s->sem);
return 0;
}
lock_kernel();
}
- down(&s->open_sem);
+ mutex_lock(&s->open_mutex);
if (file->f_mode & FMODE_WRITE) {
stop_dac(s);
kfree(s->dma_dac.rawbuf);
s->dma_adc.rawbuf = NULL;
}
s->open_mode &= ((~file->f_mode) & (FMODE_READ|FMODE_WRITE));
- up(&s->open_sem);
+ mutex_unlock(&s->open_mutex);
wake_up(&s->open_wait);
unlock_kernel();
return 0;
MODULE_AUTHOR("Advanced Micro Devices (AMD), dan@embeddededge.com");
MODULE_DESCRIPTION("Au1550 AC97 Audio Driver");
+MODULE_LICENSE("GPL");
+
static int __devinit
au1550_probe(void)
init_waitqueue_head(&s->dma_adc.wait);
init_waitqueue_head(&s->dma_dac.wait);
init_waitqueue_head(&s->open_wait);
- init_MUTEX(&s->open_sem);
+ mutex_init(&s->open_mutex);
spin_lock_init(&s->lock);
s->codec = ac97_alloc_codec();