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Commit | Line | Data |
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e7b9aa96 | 1 | /* |
a187559e | 2 | * U-Boot - main board file |
e7b9aa96 SZ |
3 | * |
4 | * Copyright (c) 2008-2011 Analog Devices Inc. | |
5 | * | |
6 | * Licensed under the GPL-2 or later. | |
7 | */ | |
8 | ||
9 | #include <common.h> | |
10 | #include <asm/blackfin.h> | |
11 | #include <asm/io.h> | |
12 | #include <i2c.h> | |
13 | #include "soft_switch.h" | |
14 | ||
e7b9aa96 SZ |
15 | struct switch_config { |
16 | uchar dir0; /* IODIRA */ | |
17 | uchar dir1; /* IODIRB */ | |
18 | uchar value0; /* OLATA */ | |
19 | uchar value1; /* OLATB */ | |
20 | }; | |
21 | ||
22 | static struct switch_config switch_config_array[NUM_SWITCH] = { | |
23 | { | |
24 | /* | |
25 | U45 Port A U45 Port B | |
26 | ||
27 | 7--------------- RMII_CLK_EN | 7--------------- ~TEMP_THERM_EN | |
28 | | 6------------- ~CNT0ZM_EN | | 6------------- ~TEMP_IRQ_EN | |
29 | | | 5----------- ~CNT0DG_EN | | | 5----------- ~UART0CTS_146_EN | |
30 | | | | 4--------- ~CNT0UD_EN | | | | 4--------- ~UART0CTS_RST_EN | |
31 | | | | | 3------- ~CAN0RX_EN | | | | | 3------- ~UART0CTS_RTS_LPBK | |
32 | | | | | | 2----- ~CAN0_ERR_EN | | | | | | 2----- ~UART0CTS_EN | |
33 | | | | | | | 1--- ~CAN_STB | | | | | | | 1--- ~UART0RX_EN | |
34 | | | | | | | | 0- CAN_EN | | | | | | | | 0- ~UART0RTS_EN | |
35 | | | | | | | | | | | | | | | | | | | |
36 | O O O O O O O O | O O O O O O O O (I/O direction) | |
37 | 1 0 0 0 0 0 1 1 | 1 1 1 1 1 0 0 0 (value being set) | |
38 | */ | |
39 | .dir0 = 0x0, /* all output */ | |
40 | .dir1 = 0x0, /* all output */ | |
41 | .value0 = RMII_CLK_EN | CAN_STB | CAN_EN, | |
42 | .value1 = TEMP_THERM_EN | TEMP_IRQ_EN | UART0CTS_146_EN | |
43 | | UART0CTS_RST_EN | UART0CTS_RTS_LPBK, | |
44 | }, | |
45 | { | |
46 | /* | |
47 | U46 Port A U46 Port B | |
48 | ||
49 | 7--------------- ~LED4_GPIO_EN | 7--------------- EMPTY | |
50 | | 6------------- ~LED3_GPIO_EN | | 6------------- ~SPI0D3_EN | |
51 | | | 5----------- ~LED2_GPIO_EN | | | 5----------- ~SPI0D2_EN | |
52 | | | | 4--------- ~LED1_GPIO_EN | | | | 4--------- ~SPIFLASH_CS_EN | |
53 | | | | | 3------- SMC0_LP0_EN | | | | | 3------- ~SD_WP_EN | |
54 | | | | | | 2----- EMPTY | | | | | | 2----- ~SD_CD_EN | |
55 | | | | | | | 1--- SMC0_EPPI2 | | | | | | | 1--- ~PUSHBUTTON2_EN | |
56 | _LP1_SWITCH | |
57 | | | | | | | | 0- OVERRIDE_SMC0 | | | | | | | | 0- ~PUSHBUTTON1_EN | |
58 | _LP0_BOOT | |
59 | | | | | | | | | | | | | | | | | | | |
60 | O O O O O O O O | O O O O O O O O (I/O direction) | |
61 | 0 0 0 0 0 X 0 1 | X 0 0 0 0 0 0 0 (value being set) | |
62 | */ | |
63 | .dir0 = 0x0, /* all output */ | |
64 | .dir1 = 0x0, /* all output */ | |
65 | #ifdef CONFIG_BFIN_LINKPORT | |
66 | .value0 = OVERRIDE_SMC0_LP0_BOOT, | |
67 | #else | |
68 | .value0 = SMC0_EPPI2_LP1_SWITCH, | |
69 | #endif | |
70 | .value1 = 0x0, | |
71 | }, | |
72 | { | |
73 | /* | |
74 | U47 Port A U47 Port B | |
75 | ||
76 | 7--------------- ~PD2_SPI0MISO | 7--------------- EMPTY | |
77 | _EI3_EN | |
78 | | 6------------- ~PD1_SPI0D3 | | 6------------- EMPTY | |
79 | _EPPI1D17 | |
80 | _SPI0SEL2 | |
81 | _EI3_EN | |
82 | | | 5----------- ~PD0_SPI0D2 | | | 5----------- EMPTY | |
83 | _EPPI1D16 | |
84 | _SPI0SEL3 | |
85 | _EI3_EN | |
86 | | | | 4--------- ~WAKE_PUSH | | | | 4--------- EMPTY | |
87 | BUTTON_EN | |
88 | | | | | 3------- ~ETHERNET_EN | | | | | 3------- EMPTY | |
89 | | | | | | 2----- PHYAD0 | | | | | | 2----- EMPTY | |
90 | | | | | | | 1--- PHY_PWR | | | | | | | 1--- ~PD4_SPI0CK_EI3_EN | |
91 | _DWN_INT | |
92 | | | | | | | | 0- ~PHYINT_EN | | | | | | | | 0- ~PD3_SPI0MOSI_EI3_EN | |
93 | | | | | | | | | | | | | | | | | | | |
94 | O O O O O I I O | O O O O O O O O (I/O direction) | |
95 | 1 1 1 0 0 0 0 0 | X X X X X X 1 1 (value being set) | |
96 | */ | |
97 | .dir0 = 0x6, /* bits 1 and 2 input, all others output */ | |
98 | .dir1 = 0x0, /* all output */ | |
99 | .value0 = PD1_SPI0D3_EN | PD0_SPI0D2_EN, | |
100 | .value1 = 0, | |
101 | }, | |
102 | }; | |
103 | ||
104 | static int setup_soft_switch(int addr, struct switch_config *config) | |
105 | { | |
106 | int ret = 0; | |
107 | ||
108 | ret = i2c_write(addr, OLATA, 1, &config->value0, 1); | |
109 | if (ret) | |
110 | return ret; | |
111 | ret = i2c_write(addr, OLATB, 1, &config->value1, 1); | |
112 | if (ret) | |
113 | return ret; | |
114 | ||
115 | ret = i2c_write(addr, IODIRA, 1, &config->dir0, 1); | |
116 | if (ret) | |
117 | return ret; | |
118 | return i2c_write(addr, IODIRB, 1, &config->dir1, 1); | |
119 | } | |
120 | ||
7d861d95 | 121 | int config_switch_bit(int addr, int port, int bit, int dir, uchar value) |
e7b9aa96 | 122 | { |
e7b9aa96 SZ |
123 | int ret, data_reg, dir_reg; |
124 | uchar tmp; | |
125 | ||
126 | if (port == IO_PORT_A) { | |
127 | data_reg = OLATA; | |
128 | dir_reg = IODIRA; | |
129 | } else { | |
130 | data_reg = OLATB; | |
131 | dir_reg = IODIRB; | |
132 | } | |
133 | ||
134 | if (dir == IO_PORT_INPUT) { | |
135 | ret = i2c_read(addr, dir_reg, 1, &tmp, 1); | |
136 | if (ret) | |
137 | return ret; | |
138 | tmp |= bit; | |
139 | return i2c_write(addr, dir_reg, 1, &tmp, 1); | |
140 | } else { | |
141 | ret = i2c_read(addr, data_reg, 1, &tmp, 1); | |
142 | if (ret) | |
143 | return ret; | |
144 | if (value) | |
145 | tmp |= bit; | |
146 | else | |
147 | tmp &= ~bit; | |
148 | ret = i2c_write(addr, data_reg, 1, &tmp, 1); | |
149 | if (ret) | |
150 | return ret; | |
151 | ret = i2c_read(addr, dir_reg, 1, &tmp, 1); | |
152 | if (ret) | |
153 | return ret; | |
154 | tmp &= ~bit; | |
155 | return i2c_write(addr, dir_reg, 1, &tmp, 1); | |
156 | } | |
157 | } | |
158 | ||
159 | int setup_board_switches(void) | |
160 | { | |
161 | int ret; | |
162 | int i; | |
163 | ||
164 | for (i = 0; i < NUM_SWITCH; i++) { | |
165 | ret = setup_soft_switch(SWITCH_ADDR + i, | |
166 | &switch_config_array[i]); | |
167 | if (ret) | |
168 | return ret; | |
169 | } | |
170 | return 0; | |
171 | } |