blob: 451b1b8f452e0a513c91213f06ac94db7ccc686c (
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
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
|
/*
* Cirrus EP7312 Clock driver
*
* Copyright (c) 2002 by Jay Monkman <jtm@smoothsmoothie.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.
*/
#include <rtems.h>
#include <ep7312.h>
#include <bsp.h>
#include <bsp/irq.h>
#include <assert.h>
#if ON_SKYEYE==1
#define CLOCK_DRIVER_USE_FAST_IDLE 1
#endif
void Clock_isr(void * arg);
#define Clock_driver_support_at_tick() \
do { \
*EP7312_TC1EOI = 0xffffffff; \
} while(0)
#define Clock_driver_support_install_isr( _new, _old ) \
do { \
rtems_status_code status = RTEMS_SUCCESSFUL; \
(_old) = NULL; /* avoid warning */; \
status = rtems_interrupt_handler_install( \
BSP_TC1OI, \
"Clock", \
RTEMS_INTERRUPT_UNIQUE, \
Clock_isr, \
NULL \
); \
assert(status == RTEMS_SUCCESSFUL); \
} while(0)
/*
* Set up the clock hardware
*/
#if ON_SKYEYE
#define TCD_VALUE \
(rtems_configuration_get_microseconds_per_tick() * 2000)/25000
#else
#define TCD_VALUE \
(rtems_configuration_get_microseconds_per_tick() * 2000)/1000000
#endif
#define Clock_driver_support_initialize_hardware() \
do { \
*EP7312_SYSCON1 |= EP7312_SYSCON1_TC1_PRESCALE; \
*EP7312_TC1D = TCD_VALUE; \
*EP7312_TC1EOI = 0xFFFFFFFF; \
} while (0)
#define Clock_driver_support_shutdown_hardware() \
do { \
rtems_status_code status = RTEMS_SUCCESSFUL; \
status = rtems_interrupt_handler_remove( \
BSP_TC1OI, \
Clock_isr, \
NULL \
); \
assert(status == RTEMS_SUCCESSFUL); \
} while (0)
#include "../../../shared/clockdrv_shell.h"
|
