#define _COMEDIDEV_H
#include <linux/dma-mapping.h>
+#include <linux/mutex.h>
+#include <linux/spinlock_types.h>
+#include <linux/rwsem.h>
+#include <linux/kref.h>
#include "comedi.h"
wait_queue_head_t wait_head;
- /* callback stuff */
unsigned int cb_mask;
- int (*cb_func) (unsigned int flags, void *);
- void *cb_arg;
int (*inttrig) (struct comedi_device *dev, struct comedi_subdevice *s,
unsigned int x);
struct device *class_dev;
int minor;
+ unsigned int detach_count;
/* hw_dev is passed to dma_alloc_coherent when allocating async buffers
* for subdevices that have async_dma_dir set to something other than
* DMA_NONE */
bool ioenabled:1;
spinlock_t spinlock;
struct mutex mutex;
+ struct rw_semaphore attach_lock;
+ struct kref refcount;
int n_subdevices;
struct comedi_subdevice *subdevices;
static const unsigned COMEDI_SUBDEVICE_MINOR_SHIFT = 4;
static const unsigned COMEDI_SUBDEVICE_MINOR_OFFSET = 1;
-struct comedi_device *comedi_dev_from_minor(unsigned minor);
+struct comedi_device *comedi_dev_get_from_minor(unsigned minor);
+int comedi_dev_put(struct comedi_device *dev);
void init_polling(void);
void cleanup_polling(void);
/* subdevice runflags */
enum subdevice_runflags {
- SRF_USER = 0x00000001,
SRF_RT = 0x00000002,
/* indicates an COMEDI_CB_ERROR event has occurred since the last
* command was started */
unsigned int comedi_buf_read_alloc(struct comedi_async *, unsigned int);
unsigned int comedi_buf_read_free(struct comedi_async *, unsigned int);
-int comedi_buf_put(struct comedi_async *, short);
-int comedi_buf_get(struct comedi_async *, short *);
+int comedi_buf_put(struct comedi_async *, unsigned short);
+int comedi_buf_get(struct comedi_async *, unsigned short *);
void comedi_buf_memcpy_to(struct comedi_async *async, unsigned int offset,
const void *source, unsigned int num_bytes);