#define I2C_RXTX_LEN 128 /* maximum tx/rx buffer length */
#if defined(CONFIG_I2C_MULTI_BUS)
+#if !defined(CONFIG_SYS_MAX_I2C_BUS)
#define CONFIG_SYS_MAX_I2C_BUS 2
+#endif
#define I2C_GET_BUS() i2c_get_bus_num()
#define I2C_SET_BUS(a) i2c_set_bus_num(a)
#else
# define I2C_SOFT_DECLARATIONS volatile ioport_t *iop = ioport_addr((immap_t *)CONFIG_SYS_IMMR, I2C_PORT);
# elif defined(CONFIG_8xx)
# define I2C_SOFT_DECLARATIONS volatile immap_t *immr = (immap_t *)CONFIG_SYS_IMMR;
+
+# elif (defined(CONFIG_AT91RM9200) || \
+ defined(CONFIG_AT91SAM9260) || defined(CONFIG_AT91SAM9261) || \
+ defined(CONFIG_AT91SAM9263)) && !defined(CONFIG_AT91_LEGACY)
+# define I2C_SOFT_DECLARATIONS at91_pio_t *pio = (at91_pio_t *) AT91_PIO_BASE;
# else
# define I2C_SOFT_DECLARATIONS
# endif
#endif
#ifdef CONFIG_8xx
-/* Set default values for the I2C bus speed and slave address on 8xx. In the
+/* Set default value for the I2C bus speed on 8xx. In the
* future, we'll define these in all 8xx board config files.
*/
#ifndef CONFIG_SYS_I2C_SPEED
#define CONFIG_SYS_I2C_SPEED 50000
#endif
+#endif
+/*
+ * Many boards/controllers/drivers don't support an I2C slave interface so
+ * provide a default slave address for them for use in common code. A real
+ * value for CONFIG_SYS_I2C_SLAVE should be defined for any board which does
+ * support a slave interface.
+ */
#ifndef CONFIG_SYS_I2C_SLAVE
-#define CONFIG_SYS_I2C_SLAVE 0xFE
-#endif
+#define CONFIG_SYS_I2C_SLAVE 0xfe
#endif
/*
printf("%s: addr=0x%02x, reg=0x%02x\n", __func__, addr, reg);
#endif
-#ifdef CONFIG_BLACKFIN
- /* This ifdef will become unneccessary in a future version of the
- * blackfin I2C driver.
- */
- i2c_read(addr, reg, 0, &buf, 1);
-#else
i2c_read(addr, reg, 1, &buf, 1);
-#endif
return buf;
}
__func__, addr, reg, val);
#endif
-#ifdef CONFIG_BLACKFIN
- /* This ifdef will become unneccessary in a future version of the
- * blackfin I2C driver.
- */
- i2c_write(addr, reg, 0, &val, 1);
-#else
i2c_write(addr, reg, 1, &val, 1);
-#endif
}
/*