#include <linux/init.h>
#include <linux/poll.h>
#include <linux/smp_lock.h>
+#include <linux/mutex.h>
#include <asm/byteorder.h>
#include <asm/dma.h>
#if CSDEBUG
static unsigned long cs_debuglevel = 4; // levels range from 1-9
static unsigned long cs_debugmask = CS_INIT /*| CS_IOCTL*/;
-MODULE_PARM(cs_debuglevel, "i");
-MODULE_PARM(cs_debugmask, "i");
+module_param(cs_debuglevel, int, 0);
+module_param(cs_debugmask, int, 0);
#endif
#define CS_TRUE 1
#define CS_FALSE 0
unsigned conversion:1; // conversion from 16 to 8 bit in progress
unsigned ena;
spinlock_t lock;
- struct semaphore open_sem;
- struct semaphore open_sem_adc;
- struct semaphore open_sem_dac;
+ struct mutex open_mutex;
+ struct mutex open_sem_adc;
+ struct mutex open_sem_dac;
mode_t open_mode;
wait_queue_head_t open_wait;
wait_queue_head_t open_wait_adc;
if (file->f_mode & FMODE_WRITE) {
drain_dac(s, file->f_flags & O_NONBLOCK);
- down(&s->open_sem_dac);
+ mutex_lock(&s->open_sem_dac);
stop_dac(s);
dealloc_dmabuf(s, &s->dma_dac);
s->open_mode &= ~FMODE_WRITE;
- up(&s->open_sem_dac);
+ mutex_unlock(&s->open_sem_dac);
wake_up(&s->open_wait_dac);
}
if (file->f_mode & FMODE_READ) {
drain_adc(s, file->f_flags & O_NONBLOCK);
- down(&s->open_sem_adc);
+ mutex_lock(&s->open_sem_adc);
stop_adc(s);
dealloc_dmabuf(s, &s->dma_adc);
s->open_mode &= ~FMODE_READ;
- up(&s->open_sem_adc);
+ mutex_unlock(&s->open_sem_adc);
wake_up(&s->open_wait_adc);
}
return 0;
;
}
- down(&s->open_sem_dac);
+ mutex_lock(&s->open_sem_dac);
while (s->open_mode & FMODE_WRITE) {
if (file->f_flags & O_NONBLOCK) {
- up(&s->open_sem_dac);
+ mutex_unlock(&s->open_sem_dac);
return -EBUSY;
}
- up(&s->open_sem_dac);
+ mutex_unlock(&s->open_sem_dac);
interruptible_sleep_on(&s->open_wait_dac);
if (signal_pending(current)) {
printk("open - sig pending\n");
return -ERESTARTSYS;
}
- down(&s->open_sem_dac);
+ mutex_lock(&s->open_sem_dac);
}
}
if (file->f_mode & FMODE_READ) {
- down(&s->open_sem_adc);
+ mutex_lock(&s->open_sem_adc);
while (s->open_mode & FMODE_READ) {
if (file->f_flags & O_NONBLOCK) {
- up(&s->open_sem_adc);
+ mutex_unlock(&s->open_sem_adc);
return -EBUSY;
}
- up(&s->open_sem_adc);
+ mutex_unlock(&s->open_sem_adc);
interruptible_sleep_on(&s->open_wait_adc);
if (signal_pending(current)) {
printk("open - sig pending\n");
return -ERESTARTSYS;
}
- down(&s->open_sem_adc);
+ mutex_lock(&s->open_sem_adc);
}
}
s->open_mode |= file->f_mode & (FMODE_READ | FMODE_WRITE);
s->ena &= ~FMODE_READ;
s->dma_adc.ossfragshift = s->dma_adc.ossmaxfrags =
s->dma_adc.subdivision = 0;
- up(&s->open_sem_adc);
+ mutex_unlock(&s->open_sem_adc);
if (prog_dmabuf_adc(s)) {
CS_DBGOUT(CS_OPEN | CS_ERROR, 2, printk(KERN_ERR
s->ena &= ~FMODE_WRITE;
s->dma_dac.ossfragshift = s->dma_dac.ossmaxfrags =
s->dma_dac.subdivision = 0;
- up(&s->open_sem_dac);
+ mutex_unlock(&s->open_sem_dac);
if (prog_dmabuf_dac(s)) {
CS_DBGOUT(CS_OPEN | CS_ERROR, 2, printk(KERN_ERR
init_waitqueue_head(&s->open_wait);
init_waitqueue_head(&s->open_wait_adc);
init_waitqueue_head(&s->open_wait_dac);
- init_MUTEX(&s->open_sem_adc);
- init_MUTEX(&s->open_sem_dac);
+ mutex_init(&s->open_sem_adc);
+ mutex_init(&s->open_sem_dac);
spin_lock_init(&s->lock);
s->irq = K_INT_SER_1;