diff options
Diffstat (limited to 'board/bf609-ezkit/soft_switch.c')
| -rw-r--r-- | board/bf609-ezkit/soft_switch.c | 180 |
1 files changed, 180 insertions, 0 deletions
diff --git a/board/bf609-ezkit/soft_switch.c b/board/bf609-ezkit/soft_switch.c new file mode 100644 index 0000000..2e1404f --- /dev/null +++ b/board/bf609-ezkit/soft_switch.c @@ -0,0 +1,180 @@ +/* + * 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" + +#define SWITCH_ADDR 0x21 + +#define NUM_SWITCH 3 +#define IODIRA 0x0 +#define IODIRB 0x1 +#define OLATA 0x14 +#define OLATB 0x15 + +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 num, int port, int bit, int dir, uchar value) +{ + int addr = SWITCH_ADDR + num; + 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; +} |