blob: 8064383bf7c356677bbed80f09d44541c64976f3 (
plain) (
blame)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
|
#include <linux/kfifo.h>
#include "iio.h"
#include "ring_generic.h"
struct iio_kfifo {
struct iio_ring_buffer ring;
struct kfifo kf;
int use_count;
int update_needed;
struct mutex use_lock;
};
#define iio_to_kfifo(r) container_of(r, struct iio_kfifo, ring)
int iio_create_kfifo(struct iio_ring_buffer **r);
int iio_init_kfifo(struct iio_ring_buffer *r, struct iio_dev *indio_dev);
void iio_exit_kfifo(struct iio_ring_buffer *r);
void iio_free_kfifo(struct iio_ring_buffer *r);
void iio_mark_kfifo_in_use(struct iio_ring_buffer *r);
void iio_unmark_kfifo_in_use(struct iio_ring_buffer *r);
int iio_store_to_kfifo(struct iio_ring_buffer *r, u8 *data, s64 timestamp);
int iio_rip_kfifo(struct iio_ring_buffer *r,
size_t count,
char __user *buf,
int *dead_offset);
int iio_request_update_kfifo(struct iio_ring_buffer *r);
int iio_mark_update_needed_kfifo(struct iio_ring_buffer *r);
int iio_get_bytes_per_datum_kfifo(struct iio_ring_buffer *r);
int iio_set_bytes_per_datum_kfifo(struct iio_ring_buffer *r, size_t bpd);
int iio_get_length_kfifo(struct iio_ring_buffer *r);
int iio_set_length_kfifo(struct iio_ring_buffer *r, int length);
static inline void iio_kfifo_register_funcs(struct iio_ring_access_funcs *ra)
{
ra->mark_in_use = &iio_mark_kfifo_in_use;
ra->unmark_in_use = &iio_unmark_kfifo_in_use;
ra->store_to = &iio_store_to_kfifo;
ra->rip_lots = &iio_rip_kfifo;
ra->mark_param_change = &iio_mark_update_needed_kfifo;
ra->request_update = &iio_request_update_kfifo;
ra->get_bytes_per_datum = &iio_get_bytes_per_datum_kfifo;
ra->set_bytes_per_datum = &iio_set_bytes_per_datum_kfifo;
ra->get_length = &iio_get_length_kfifo;
ra->set_length = &iio_set_length_kfifo;
};
struct iio_ring_buffer *iio_kfifo_allocate(struct iio_dev *indio_dev);
void iio_kfifo_free(struct iio_ring_buffer *r);
|
