diff options
| -rw-r--r-- | board/keymile/mgcoge/mgcoge.c | 14 | ||||
| -rw-r--r-- | board/keymile/mgsuvd/mgsuvd.c | 11 | ||||
| -rw-r--r-- | include/configs/mgcoge.h | 25 | ||||
| -rw-r--r-- | include/configs/mgsuvd.h | 43 |
4 files changed, 91 insertions, 2 deletions
diff --git a/board/keymile/mgcoge/mgcoge.c b/board/keymile/mgcoge/mgcoge.c index a6bf9bc5db..d3e46f55e7 100644 --- a/board/keymile/mgcoge/mgcoge.c +++ b/board/keymile/mgcoge/mgcoge.c @@ -24,11 +24,16 @@ #include <common.h> #include <mpc8260.h> #include <ioports.h> +#include <malloc.h> #if defined(CONFIG_OF_BOARD_SETUP) && defined(CONFIG_OF_LIBFDT) #include <libfdt.h> #endif +#if defined(CONFIG_HARD_I2C) || defined(CONFIG_SOFT_I2C) +#include <i2c.h> +#endif + /* * I/O Port configuration table * @@ -163,8 +168,13 @@ const iop_conf_t iop_conf_tab[4][32] = { /* PD18 */ { 0, 0, 0, 0, 0, 0 }, /* PD18 */ /* PD17 */ { 0, 0, 0, 0, 0, 0 }, /* PD17 */ /* PD16 */ { 0, 0, 0, 0, 0, 0 }, /* PD16 */ - /* PD15 */ { 0, 0, 0, 0, 0, 0 }, /* PD15 */ - /* PD14 */ { 0, 0, 0, 0, 0, 0 }, /* PD14 */ +#if defined(CONFIG_HARD_I2C) + /* PD15 */ { 1, 1, 1, 0, 1, 0 }, /* I2C SDA */ + /* PD14 */ { 1, 1, 1, 0, 1, 0 }, /* I2C SCL */ +#else + /* PD15 */ { 1, 0, 0, 0, 1, 1 }, /* PD15 */ + /* PD14 */ { 1, 0, 0, 1, 1, 1 }, /* PD14 */ +#endif /* PD13 */ { 0, 0, 0, 0, 0, 0 }, /* PD13 */ /* PD12 */ { 0, 0, 0, 0, 0, 0 }, /* PD12 */ /* PD11 */ { 0, 0, 0, 0, 0, 0 }, /* PD11 */ diff --git a/board/keymile/mgsuvd/mgsuvd.c b/board/keymile/mgsuvd/mgsuvd.c index c51ea7e76e..d78b2da653 100644 --- a/board/keymile/mgsuvd/mgsuvd.c +++ b/board/keymile/mgsuvd/mgsuvd.c @@ -225,3 +225,14 @@ void ft_board_setup(void *blob, bd_t *bd) ft_blob_update(blob, bd); } #endif /* defined(CONFIG_OF_BOARD_SETUP) && defined(CONFIG_OF_LIBFDT) */ + +int i2c_soft_read_pin (void) +{ + int val; + + *(unsigned short *)(I2C_BASE_DIR) &= ~SDA_CONF; + udelay(1); + val = *(unsigned char *)(I2C_BASE_PORT); + + return ((val & SDA_BIT) == SDA_BIT); +} diff --git a/include/configs/mgcoge.h b/include/configs/mgcoge.h index 23af3ec483..159eeaecfb 100644 --- a/include/configs/mgcoge.h +++ b/include/configs/mgcoge.h @@ -82,6 +82,7 @@ #include <config_cmd_default.h> #define CONFIG_CMD_ECHO +#define CONFIG_CMD_I2C #define CONFIG_CMD_IMMAP #define CONFIG_CMD_MII #define CONFIG_CMD_PING @@ -176,6 +177,30 @@ #define CONFIG_ENV_ADDR (CFG_MONITOR_BASE + CFG_MONITOR_LEN) #endif /* CONFIG_ENV_IS_IN_FLASH */ +/* enable I2C and select the hardware/software driver */ +#undef CONFIG_HARD_I2C /* I2C with hardware support */ +#define CONFIG_SOFT_I2C 1 /* I2C bit-banged */ +#define CFG_I2C_SPEED 50000 /* I2C speed and slave address */ +#define CFG_I2C_SLAVE 0x7F + +/* + * Software (bit-bang) I2C driver configuration + */ + +#define I2C_PORT 3 /* Port A=0, B=1, C=2, D=3 */ +#define I2C_ACTIVE (iop->pdir |= 0x00010000) +#define I2C_TRISTATE (iop->pdir &= ~0x00010000) +#define I2C_READ ((iop->pdat & 0x00010000) != 0) +#define I2C_SDA(bit) if(bit) iop->pdat |= 0x00010000; \ + else iop->pdat &= ~0x00010000 +#define I2C_SCL(bit) if(bit) iop->pdat |= 0x00020000; \ + else iop->pdat &= ~0x00020000 +#define I2C_DELAY udelay(5) /* 1/4 I2C clock duration */ + +#define CONFIG_I2C_MULTI_BUS 1 +#define CONFIG_I2C_CMD_TREE 1 +#define CFG_MAX_I2C_BUS 2 + #define CFG_IMMR 0xF0000000 #define CFG_INIT_RAM_ADDR CFG_IMMR diff --git a/include/configs/mgsuvd.h b/include/configs/mgsuvd.h index 740767e1e2..f2cfe6e274 100644 --- a/include/configs/mgsuvd.h +++ b/include/configs/mgsuvd.h @@ -113,6 +113,7 @@ #define CONFIG_CMD_ASKENV #define CONFIG_CMD_DHCP +#define CONFIG_CMD_I2C #define CONFIG_CMD_NFS #define CONFIG_CMD_PING @@ -330,4 +331,46 @@ #define OF_TBCLK (bd->bi_busfreq / 4) #define OF_STDOUT_PATH "/soc/cpm/serial@a80" +/* enable I2C and select the hardware/software driver */ +#undef CONFIG_HARD_I2C /* I2C with hardware support */ +#define CONFIG_SOFT_I2C 1 /* I2C bit-banged */ +#define CFG_I2C_SPEED 50000 /* I2C speed and slave address */ +#define CFG_I2C_SLAVE 0x7F +#define I2C_SOFT_DECLARATIONS + +/* + * Software (bit-bang) I2C driver configuration + */ +#define I2C_BASE_DIR (CFG_PIGGY_BASE + 0x04) +#define I2C_BASE_PORT (CFG_PIGGY_BASE + 0x09) + +#define SDA_BIT 0x40 +#define SCL_BIT 0x80 +#define SDA_CONF 0x1000 +#define SCL_CONF 0x2000 + +#define I2C_ACTIVE do {} while (0) +#define I2C_TRISTATE do {} while (0) +#define I2C_READ i2c_soft_read_pin () +#define I2C_SDA(bit) if(bit) { \ + *(unsigned short *)(I2C_BASE_DIR) &= ~SDA_CONF; \ + } \ + else { \ + *(unsigned char *)(I2C_BASE_PORT) &= ~SDA_BIT; \ + *(unsigned short *)(I2C_BASE_DIR) |= SDA_CONF; \ + } +#define I2C_SCL(bit) if(bit) { \ + *(unsigned short *)(I2C_BASE_DIR) &= ~SCL_CONF; \ + } \ + else { \ + *(unsigned char *)(I2C_BASE_PORT) &= ~SCL_BIT; \ + *(unsigned short *)(I2C_BASE_DIR) |= SCL_CONF; \ + } +#define I2C_DELAY udelay(50) /* 1/4 I2C clock duration */ + +#define CONFIG_I2C_MULTI_BUS 1 +#define CONFIG_I2C_CMD_TREE 1 +#define CFG_MAX_I2C_BUS 2 + + #endif /* __CONFIG_H */ |