git.sur5r.net Git - u-boot/blob - board/bf609-ezkit/soft_switch.c

   1 /*
   2  * U-boot - main board file
   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
  15 #define SWITCH_ADDR     0x21
  16
  17 #define NUM_SWITCH      3
  18 #define IODIRA          0x0
  19 #define IODIRB          0x1
  20 #define OLATA           0x14
  21 #define OLATB           0x15
  22
  23 struct switch_config {
  24         uchar dir0; /* IODIRA */
  25         uchar dir1; /* IODIRB */
  26         uchar value0; /* OLATA */
  27         uchar value1; /* OLATB */
  28 };
  29
  30 static struct switch_config switch_config_array[NUM_SWITCH] = {
  31         {
  32 /*
  33         U45 Port A                     U45 Port B
  34
  35         7---------------  RMII_CLK_EN  |  7--------------- ~TEMP_THERM_EN
  36         | 6------------- ~CNT0ZM_EN    |  | 6------------- ~TEMP_IRQ_EN
  37         | | 5----------- ~CNT0DG_EN    |  | | 5----------- ~UART0CTS_146_EN
  38         | | | 4--------- ~CNT0UD_EN    |  | | | 4--------- ~UART0CTS_RST_EN
  39         | | | | 3------- ~CAN0RX_EN    |  | | | | 3------- ~UART0CTS_RTS_LPBK
  40         | | | | | 2----- ~CAN0_ERR_EN  |  | | | | | 2----- ~UART0CTS_EN
  41         | | | | | | 1--- ~CAN_STB      |  | | | | | | 1--- ~UART0RX_EN
  42         | | | | | | | 0-  CAN_EN       |  | | | | | | | 0- ~UART0RTS_EN
  43         | | | | | | | |                |  | | | | | | | |
  44         O O O O O O O O                |  O O O O O O O O   (I/O direction)
  45         1 0 0 0 0 0 1 1                |  1 1 1 1 1 0 0 0   (value being set)
  46 */
  47                 .dir0 = 0x0, /* all output */
  48                 .dir1 = 0x0, /* all output */
  49                 .value0 = RMII_CLK_EN | CAN_STB | CAN_EN,
  50                 .value1 = TEMP_THERM_EN | TEMP_IRQ_EN | UART0CTS_146_EN
  51                                 | UART0CTS_RST_EN | UART0CTS_RTS_LPBK,
  52         },
  53         {
  54 /*
  55         U46 Port A                       U46 Port B
  56
  57         7--------------- ~LED4_GPIO_EN   |  7---------------  EMPTY
  58         | 6------------- ~LED3_GPIO_EN   |  | 6------------- ~SPI0D3_EN
  59         | | 5----------- ~LED2_GPIO_EN   |  | | 5----------- ~SPI0D2_EN
  60         | | | 4--------- ~LED1_GPIO_EN   |  | | | 4--------- ~SPIFLASH_CS_EN
  61         | | | | 3-------  SMC0_LP0_EN    |  | | | | 3------- ~SD_WP_EN
  62         | | | | | 2-----  EMPTY          |  | | | | | 2----- ~SD_CD_EN
  63         | | | | | | 1---  SMC0_EPPI2     |  | | | | | | 1--- ~PUSHBUTTON2_EN
  64                           _LP1_SWITCH
  65         | | | | | | | 0-  OVERRIDE_SMC0  |  | | | | | | | 0- ~PUSHBUTTON1_EN
  66                           _LP0_BOOT
  67         | | | | | | | |                  |  | | | | | | | |
  68         O O O O O O O O                  |  O O O O O O O O   (I/O direction)
  69         0 0 0 0 0 X 0 1                  |  X 0 0 0 0 0 0 0   (value being set)
  70 */
  71                 .dir0 = 0x0, /* all output */
  72                 .dir1 = 0x0, /* all output */
  73 #ifdef CONFIG_BFIN_LINKPORT
  74                 .value0 = OVERRIDE_SMC0_LP0_BOOT,
  75 #else
  76                 .value0 = SMC0_EPPI2_LP1_SWITCH,
  77 #endif
  78                 .value1 = 0x0,
  79         },
  80         {
  81 /*
  82         U47 Port A                         U47 Port B
  83
  84         7--------------- ~PD2_SPI0MISO |  7---------------  EMPTY
  85                           _EI3_EN
  86         | 6------------- ~PD1_SPI0D3   |  | 6-------------  EMPTY
  87                           _EPPI1D17
  88                           _SPI0SEL2
  89                           _EI3_EN
  90         | | 5----------- ~PD0_SPI0D2   |  | | 5-----------  EMPTY
  91                           _EPPI1D16
  92                           _SPI0SEL3
  93                           _EI3_EN
  94         | | | 4--------- ~WAKE_PUSH    |  | | | 4---------  EMPTY
  95                           BUTTON_EN
  96         | | | | 3------- ~ETHERNET_EN  |  | | | | 3-------  EMPTY
  97         | | | | | 2-----  PHYAD0       |  | | | | | 2-----  EMPTY
  98         | | | | | | 1---  PHY_PWR      |  | | | | | | 1--- ~PD4_SPI0CK_EI3_EN
  99                           _DWN_INT
 100         | | | | | | | 0- ~PHYINT_EN    |  | | | | | | | 0- ~PD3_SPI0MOSI_EI3_EN
 101         | | | | | | | |                |  | | | | | | | |
 102         O O O O O I I O                |  O O O O O O O O   (I/O direction)
 103         1 1 1 0 0 0 0 0                |  X X X X X X 1 1   (value being set)
 104 */
 105                 .dir0 = 0x6, /* bits 1 and 2 input, all others output */
 106                 .dir1 = 0x0, /* all output */
 107                 .value0 = PD1_SPI0D3_EN | PD0_SPI0D2_EN,
 108                 .value1 = 0,
 109         },
 110 };
 111
 112 static int setup_soft_switch(int addr, struct switch_config *config)
 113 {
 114         int ret = 0;
 115
 116         ret = i2c_write(addr, OLATA, 1, &config->value0, 1);
 117         if (ret)
 118                 return ret;
 119         ret = i2c_write(addr, OLATB, 1, &config->value1, 1);
 120         if (ret)
 121                 return ret;
 122
 123         ret = i2c_write(addr, IODIRA, 1, &config->dir0, 1);
 124         if (ret)
 125                 return ret;
 126         return i2c_write(addr, IODIRB, 1, &config->dir1, 1);
 127 }
 128
 129 int config_switch_bit(int num, int port, int bit, int dir, uchar value)
 130 {
 131         int addr = SWITCH_ADDR + num;
 132         int ret, data_reg, dir_reg;
 133         uchar tmp;
 134
 135         if (port == IO_PORT_A) {
 136                 data_reg = OLATA;
 137                 dir_reg = IODIRA;
 138         } else {
 139                 data_reg = OLATB;
 140                 dir_reg = IODIRB;
 141         }
 142
 143         if (dir == IO_PORT_INPUT) {
 144                 ret = i2c_read(addr, dir_reg, 1, &tmp, 1);
 145                 if (ret)
 146                         return ret;
 147                 tmp |= bit;
 148                 return i2c_write(addr, dir_reg, 1, &tmp, 1);
 149         } else {
 150                 ret = i2c_read(addr, data_reg, 1, &tmp, 1);
 151                 if (ret)
 152                         return ret;
 153                 if (value)
 154                         tmp |= bit;
 155                 else
 156                         tmp &= ~bit;
 157                 ret = i2c_write(addr, data_reg, 1, &tmp, 1);
 158                 if (ret)
 159                         return ret;
 160                 ret = i2c_read(addr, dir_reg, 1, &tmp, 1);
 161                 if (ret)
 162                         return ret;
 163                 tmp &= ~bit;
 164                 return i2c_write(addr, dir_reg, 1, &tmp, 1);
 165         }
 166 }
 167
 168 int setup_board_switches(void)
 169 {
 170         int ret;
 171         int i;
 172
 173         for (i = 0; i < NUM_SWITCH; i++) {
 174                 ret = setup_soft_switch(SWITCH_ADDR + i,
 175                                 &switch_config_array[i]);
 176                 if (ret)
 177                         return ret;
 178         }
 179         return 0;
 180 }