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
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
|
/* placeholder (just a shell) */
/* SPI driver for Blackfin
*
* Copyright (c) 2008 Kallisti Labs, Los Gatos, CA, USA
* written by Allan Hessenflow <allanh@kallisti.com>
*
* The license and distribution terms for this file may be
* found in the file LICENSE in this distribution or at
* http://www.rtems.com/license/LICENSE.
*
* $Id$
*/
#include <stdlib.h>
#include <rtems.h>
#include <rtems/libi2c.h>
#include <libcpu/spiRegs.h>
#include "spi.h"
static rtems_status_code spiInit(rtems_libi2c_bus_t *bus) {
bfin_spi_softc_t *softc;
rtems_status_code status;
softc = &(((bfin_spi_desc_t *)(bus))->softc);
status = rtems_semaphore_create(rtems_build_name('s','p','i','s'),
0,
RTEMS_FIFO | RTEMS_SIMPLE_BINARY_SEMAPHORE,
0,
&softc->irq_sema_id);
return status;
}
static rtems_status_code spiSendStart(rtems_libi2c_bus_t *bus) {
bfin_spi_softc_t *softc;
rtems_status_code status;
status = RTEMS_SUCCESSFUL;
softc = &(((bfin_spi_desc_t *)(bus))->softc);
return status;
}
static rtems_status_code spiSendStop(rtems_libi2c_bus_t *bus) {
bfin_spi_softc_t *softc;
rtems_status_code status;
status = RTEMS_SUCCESSFUL;
softc = &(((bfin_spi_desc_t *)(bus))->softc);
return status;
}
static rtems_status_code spiSendAddr(rtems_libi2c_bus_t *bus,
uint32_t addr, int rw) {
bfin_spi_softc_t *softc;
rtems_status_code status;
status = RTEMS_SUCCESSFUL;
softc = &(((bfin_spi_desc_t *)(bus))->softc);
return status;
}
static int spiReadBytes(rtems_libi2c_bus_t *bus,
unsigned char *buf, int len) {
bfin_spi_softc_t *softc;
softc = &(((bfin_spi_desc_t *)(bus))->softc);
return 0;
}
static int spiWriteBytes(rtems_libi2c_bus_t *bus,
unsigned char *buf, int len) {
bfin_spi_softc_t *softc;
softc = &(((bfin_spi_desc_t *)(bus))->softc);
return 0;
}
static int spiIoctl(rtems_libi2c_bus_t *bus, int cmd, void *arg) {
bfin_spi_softc_t *softc;
softc = &(((bfin_spi_desc_t *)(bus))->softc);
return 0;
}
void bfin_spi_isr(int source) {
}
rtems_libi2c_bus_ops_t bfin_spi_libi2c_bus_ops = {
init: spiInit,
send_start: spiSendStart,
send_stop: spiSendStop,
send_addr: spiSendAddr,
read_bytes: spiReadBytes,
write_bytes: spiWriteBytes,
ioctl: spiIoctl
};
|
