summaryrefslogtreecommitdiffstats
path: root/board/bf609-ezkit/soft_switch.c
blob: e0c8d93fe777b128068e54760f4a8700a36709cb (plain)
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
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
/*
 * U-boot - main board file
 *
 * Copyright (c) 2008-2011 Analog Devices Inc.
 *
 * Licensed under the GPL-2 or later.
 */

#include <common.h>
#include <asm/blackfin.h>
#include <asm/io.h>
#include <i2c.h>
#include "soft_switch.h"

struct switch_config {
	uchar dir0; /* IODIRA */
	uchar dir1; /* IODIRB */
	uchar value0; /* OLATA */
	uchar value1; /* OLATB */
};

static struct switch_config switch_config_array[NUM_SWITCH] = {
	{
/*
	U45 Port A                     U45 Port B

	7---------------  RMII_CLK_EN  |  7--------------- ~TEMP_THERM_EN
	| 6------------- ~CNT0ZM_EN    |  | 6------------- ~TEMP_IRQ_EN
	| | 5----------- ~CNT0DG_EN    |  | | 5----------- ~UART0CTS_146_EN
	| | | 4--------- ~CNT0UD_EN    |  | | | 4--------- ~UART0CTS_RST_EN
	| | | | 3------- ~CAN0RX_EN    |  | | | | 3------- ~UART0CTS_RTS_LPBK
	| | | | | 2----- ~CAN0_ERR_EN  |  | | | | | 2----- ~UART0CTS_EN
	| | | | | | 1--- ~CAN_STB      |  | | | | | | 1--- ~UART0RX_EN
	| | | | | | | 0-  CAN_EN       |  | | | | | | | 0- ~UART0RTS_EN
	| | | | | | | |                |  | | | | | | | |
	O O O O O O O O                |  O O O O O O O O   (I/O direction)
	1 0 0 0 0 0 1 1                |  1 1 1 1 1 0 0 0   (value being set)
*/
		.dir0 = 0x0, /* all output */
		.dir1 = 0x0, /* all output */
		.value0 = RMII_CLK_EN | CAN_STB | CAN_EN,
		.value1 = TEMP_THERM_EN | TEMP_IRQ_EN | UART0CTS_146_EN
				| UART0CTS_RST_EN | UART0CTS_RTS_LPBK,
	},
	{
/*
	U46 Port A                       U46 Port B

	7--------------- ~LED4_GPIO_EN   |  7---------------  EMPTY
	| 6------------- ~LED3_GPIO_EN   |  | 6------------- ~SPI0D3_EN
	| | 5----------- ~LED2_GPIO_EN   |  | | 5----------- ~SPI0D2_EN
	| | | 4--------- ~LED1_GPIO_EN   |  | | | 4--------- ~SPIFLASH_CS_EN
	| | | | 3-------  SMC0_LP0_EN    |  | | | | 3------- ~SD_WP_EN
	| | | | | 2-----  EMPTY          |  | | | | | 2----- ~SD_CD_EN
	| | | | | | 1---  SMC0_EPPI2     |  | | | | | | 1--- ~PUSHBUTTON2_EN
			  _LP1_SWITCH
	| | | | | | | 0-  OVERRIDE_SMC0  |  | | | | | | | 0- ~PUSHBUTTON1_EN
			  _LP0_BOOT
	| | | | | | | |                  |  | | | | | | | |
	O O O O O O O O                  |  O O O O O O O O   (I/O direction)
	0 0 0 0 0 X 0 1                  |  X 0 0 0 0 0 0 0   (value being set)
*/
		.dir0 = 0x0, /* all output */
		.dir1 = 0x0, /* all output */
#ifdef CONFIG_BFIN_LINKPORT
		.value0 = OVERRIDE_SMC0_LP0_BOOT,
#else
		.value0 = SMC0_EPPI2_LP1_SWITCH,
#endif
		.value1 = 0x0,
	},
	{
/*
	U47 Port A                         U47 Port B

	7--------------- ~PD2_SPI0MISO |  7---------------  EMPTY
			  _EI3_EN
	| 6------------- ~PD1_SPI0D3   |  | 6-------------  EMPTY
			  _EPPI1D17
			  _SPI0SEL2
			  _EI3_EN
	| | 5----------- ~PD0_SPI0D2   |  | | 5-----------  EMPTY
			  _EPPI1D16
			  _SPI0SEL3
			  _EI3_EN
	| | | 4--------- ~WAKE_PUSH    |  | | | 4---------  EMPTY
			  BUTTON_EN
	| | | | 3------- ~ETHERNET_EN  |  | | | | 3-------  EMPTY
	| | | | | 2-----  PHYAD0       |  | | | | | 2-----  EMPTY
	| | | | | | 1---  PHY_PWR      |  | | | | | | 1--- ~PD4_SPI0CK_EI3_EN
			  _DWN_INT
	| | | | | | | 0- ~PHYINT_EN    |  | | | | | | | 0- ~PD3_SPI0MOSI_EI3_EN
	| | | | | | | |                |  | | | | | | | |
	O O O O O I I O                |  O O O O O O O O   (I/O direction)
	1 1 1 0 0 0 0 0                |  X X X X X X 1 1   (value being set)
*/
		.dir0 = 0x6, /* bits 1 and 2 input, all others output */
		.dir1 = 0x0, /* all output */
		.value0 = PD1_SPI0D3_EN | PD0_SPI0D2_EN,
		.value1 = 0,
	},
};

static int setup_soft_switch(int addr, struct switch_config *config)
{
	int ret = 0;

	ret = i2c_write(addr, OLATA, 1, &config->value0, 1);
	if (ret)
		return ret;
	ret = i2c_write(addr, OLATB, 1, &config->value1, 1);
	if (ret)
		return ret;

	ret = i2c_write(addr, IODIRA, 1, &config->dir0, 1);
	if (ret)
		return ret;
	return i2c_write(addr, IODIRB, 1, &config->dir1, 1);
}

int config_switch_bit(int addr, int port, int bit, int dir, uchar value)
{
	int ret, data_reg, dir_reg;
	uchar tmp;

	if (port == IO_PORT_A) {
		data_reg = OLATA;
		dir_reg = IODIRA;
	} else {
		data_reg = OLATB;
		dir_reg = IODIRB;
	}

	if (dir == IO_PORT_INPUT) {
		ret = i2c_read(addr, dir_reg, 1, &tmp, 1);
		if (ret)
			return ret;
		tmp |= bit;
		return i2c_write(addr, dir_reg, 1, &tmp, 1);
	} else {
		ret = i2c_read(addr, data_reg, 1, &tmp, 1);
		if (ret)
			return ret;
		if (value)
			tmp |= bit;
		else
			tmp &= ~bit;
		ret = i2c_write(addr, data_reg, 1, &tmp, 1);
		if (ret)
			return ret;
		ret = i2c_read(addr, dir_reg, 1, &tmp, 1);
		if (ret)
			return ret;
		tmp &= ~bit;
		return i2c_write(addr, dir_reg, 1, &tmp, 1);
	}
}

int setup_board_switches(void)
{
	int ret;
	int i;

	for (i = 0; i < NUM_SWITCH; i++) {
		ret = setup_soft_switch(SWITCH_ADDR + i,
				&switch_config_array[i]);
		if (ret)
			return ret;
	}
	return 0;
}
OpenPOWER on IntegriCloud