Powerpc/i2c: Use the same initialize codes

Make the I2C2 and I2C1 use the same initialize codes.

Signed-off-by: Jerry Huang <Chang-Ming.Huang@freescale.com>

diff --git a/drivers/i2c/fsl_i2c.c b/drivers/i2c/fsl_i2c.c
index cb13dee..258be0a 100644 (file)
--- a/drivers/i2c/fsl_i2c.c
+++ b/drivers/i2c/fsl_i2c.c
@@ -214,11 +214,20 @@ static unsigned int set_i2c_bus_speed(const struct fsl_i2c *dev,
        return speed;
 }
 
+unsigned int get_i2c_clock(int bus)
+{
+       if (bus)
+               return gd->i2c2_clk;    /* I2C2 clock */
+       else
+               return gd->i2c1_clk;    /* I2C1 clock */
+}
+
 void
 i2c_init(int speed, int slaveadd)
 {
        struct fsl_i2c *dev;
        unsigned int temp;
+       int bus_num, i;
 
 #ifdef CONFIG_SYS_I2C_INIT_BOARD
        /* Call board specific i2c bus reset routine before accessing the
@@ -227,29 +236,23 @@ i2c_init(int speed, int slaveadd)
        */
        i2c_init_board();
 #endif
-       dev = (struct fsl_i2c *) (CONFIG_SYS_IMMR + CONFIG_SYS_I2C_OFFSET);
-
-       writeb(0, &dev->cr);                    /* stop I2C controller */
-       udelay(5);                              /* let it shutdown in peace */
-       temp = set_i2c_bus_speed(dev, gd->i2c1_clk, speed);
-       if (gd->flags & GD_FLG_RELOC)
-               i2c_bus_speed[0] = temp;
-       writeb(slaveadd << 1, &dev->adr);       /* write slave address */
-       writeb(0x0, &dev->sr);                  /* clear status register */
-       writeb(I2C_CR_MEN, &dev->cr);           /* start I2C controller */
-
-#ifdef CONFIG_SYS_I2C2_OFFSET
-       dev = (struct fsl_i2c *) (CONFIG_SYS_IMMR + CONFIG_SYS_I2C2_OFFSET);
-
-       writeb(0, &dev->cr);                    /* stop I2C controller */
-       udelay(5);                              /* let it shutdown in peace */
-       temp = set_i2c_bus_speed(dev, gd->i2c2_clk, speed);
-       if (gd->flags & GD_FLG_RELOC)
-               i2c_bus_speed[1] = temp;
-       writeb(slaveadd << 1, &dev->adr);       /* write slave address */
-       writeb(0x0, &dev->sr);                  /* clear status register */
-       writeb(I2C_CR_MEN, &dev->cr);           /* start I2C controller */
+#ifdef CONFIG_SYS_I2C2_OFFSET
+       bus_num = 2;
+#else
+       bus_num = 1;
 #endif
+       for (i = 0; i < bus_num; i++) {
+               dev = i2c_dev[i];
+
+               writeb(0, &dev->cr);            /* stop I2C controller */
+               udelay(5);                      /* let it shutdown in peace */
+               temp = set_i2c_bus_speed(dev, get_i2c_clock(i), speed);
+               if (gd->flags & GD_FLG_RELOC)
+                       i2c_bus_speed[i] = temp;
+               writeb(slaveadd << 1, &dev->adr);/* write slave address */
+               writeb(0x0, &dev->sr);          /* clear status register */
+               writeb(I2C_CR_MEN, &dev->cr);   /* start I2C controller */
+       }
 
 #ifdef CONFIG_SYS_I2C_BOARD_LATE_INIT
        /* Call board specific i2c bus reset routine AFTER the bus has been