-#define DIR immr->im_cpm.cp_pbdir
-#define DAT immr->im_cpm.cp_pbdat
-#define PAR immr->im_cpm.cp_pbpar
-#define ODR immr->im_cpm.cp_pbodr
-#define I2C_INIT {PAR&=~(SDA|SCL);ODR&=~(SDA|SCL);DAT|=(SDA|SCL);DIR|=(SDA|SCL);}
-#define I2C_READ ((DAT&SDA)?1:0)
-#define I2C_SDA(x) {if(x)DAT|=SDA;else DAT&=~SDA;}
-#define I2C_SCL(x) {if(x)DAT|=SCL;else DAT&=~SCL;}
-#define I2C_DELAY {udelay(5);}
-#define I2C_ACTIVE {DIR|=SDA;}
-#define I2C_TRISTATE {DIR&=~SDA;}
+#define __I2C_DIR immr->im_cpm.cp_pbdir
+#define __I2C_DAT immr->im_cpm.cp_pbdat
+#define __I2C_PAR immr->im_cpm.cp_pbpar
+#define __I2C_ODR immr->im_cpm.cp_pbodr
+#define I2C_INIT { __I2C_PAR &= ~(SDA|SCL); \
+ __I2C_ODR &= ~(SDA|SCL); \
+ __I2C_DAT |= (SDA|SCL); \
+ __I2C_DIR|=(SDA|SCL); }
+#define I2C_READ ((__I2C_DAT & SDA) ? 1 : 0)
+#define I2C_SDA(x) { if (x) __I2C_DAT |= SDA; else __I2C_DAT &= ~SDA; }
+#define I2C_SCL(x) { if (x) __I2C_DAT |= SCL; else __I2C_DAT &= ~SCL; }
+#define I2C_DELAY { udelay(5); }
+#define I2C_ACTIVE { __I2C_DIR |= SDA; }
+#define I2C_TRISTATE { __I2C_DIR &= ~SDA; }