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
110
111
112
113
|
/*
* (C) Copyright 2007-2008
* Stelian Pop <stelian.pop@leadtechdesign.com>
* Lead Tech Design <www.leadtechdesign.com>
*
* See file CREDITS for list of people who contributed to this
* project.
*
* This program is free software; you can redistribute it and/or
* modify it under the terms of the GNU General Public License as
* published by the Free Software Foundation; either version 2 of
* the License, or (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software
* Foundation, Inc., 59 Temple Place, Suite 330, Boston,
* MA 02111-1307 USA
*/
#include <common.h>
#include <asm/arch/at91_common.h>
#include <asm/arch/at91_pmc.h>
#include <asm/arch/gpio.h>
#include <asm/arch/io.h>
void at91_serial0_hw_init(void)
{
at91_set_A_periph(AT91_PIN_PA6, 1); /* TXD0 */
at91_set_A_periph(AT91_PIN_PA7, 0); /* RXD0 */
at91_sys_write(AT91_PMC_PCER, 1 << AT91SAM9RL_ID_US0);
}
void at91_serial1_hw_init(void)
{
at91_set_A_periph(AT91_PIN_PA11, 1); /* TXD1 */
at91_set_A_periph(AT91_PIN_PA12, 0); /* RXD1 */
at91_sys_write(AT91_PMC_PCER, 1 << AT91SAM9RL_ID_US1);
}
void at91_serial2_hw_init(void)
{
at91_set_A_periph(AT91_PIN_PA13, 1); /* TXD2 */
at91_set_A_periph(AT91_PIN_PA14, 0); /* RXD2 */
at91_sys_write(AT91_PMC_PCER, 1 << AT91SAM9RL_ID_US2);
}
void at91_serial3_hw_init(void)
{
at91_set_A_periph(AT91_PIN_PA21, 0); /* DRXD */
at91_set_A_periph(AT91_PIN_PA22, 1); /* DTXD */
at91_sys_write(AT91_PMC_PCER, 1 << AT91_ID_SYS);
}
void at91_serial_hw_init(void)
{
#ifdef CONFIG_USART0
at91_serial0_hw_init();
#endif
#ifdef CONFIG_USART1
at91_serial1_hw_init();
#endif
#ifdef CONFIG_USART2
at91_serial2_hw_init();
#endif
#ifdef CONFIG_USART3 /* DBGU */
at91_serial3_hw_init();
#endif
}
#ifdef CONFIG_HAS_DATAFLASH
void at91_spi0_hw_init(unsigned long cs_mask)
{
at91_set_A_periph(AT91_PIN_PA25, 0); /* SPI0_MISO */
at91_set_A_periph(AT91_PIN_PA26, 0); /* SPI0_MOSI */
at91_set_A_periph(AT91_PIN_PA27, 0); /* SPI0_SPCK */
/* Enable clock */
at91_sys_write(AT91_PMC_PCER, 1 << AT91SAM9RL_ID_SPI);
if (cs_mask & (1 << 0)) {
at91_set_A_periph(AT91_PIN_PA28, 1);
}
if (cs_mask & (1 << 1)) {
at91_set_B_periph(AT91_PIN_PB7, 1);
}
if (cs_mask & (1 << 2)) {
at91_set_A_periph(AT91_PIN_PD8, 1);
}
if (cs_mask & (1 << 3)) {
at91_set_B_periph(AT91_PIN_PD9, 1);
}
if (cs_mask & (1 << 4)) {
at91_set_gpio_output(AT91_PIN_PA28, 1);
}
if (cs_mask & (1 << 5)) {
at91_set_gpio_output(AT91_PIN_PB7, 1);
}
if (cs_mask & (1 << 6)) {
at91_set_gpio_output(AT91_PIN_PD8, 1);
}
if (cs_mask & (1 << 7)) {
at91_set_gpio_output(AT91_PIN_PD9, 1);
}
}
#endif
|
