From: Jerry Huang <Chang-Ming.Huang@freescale.com>
Date: Wed, 26 Oct 2011 15:29:38 +0000 (+0000)
Subject: Powerpc/i2c: Use the same initialize codes
X-Git-Tag: v2011.12-rc1~230^2
X-Git-Url: https://git.sur5r.net/?a=commitdiff_plain;h=c9a8b25ef9de9368cbe5be80d59c29af8ad40113;p=u-boot

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 cb13deeea9..258be0a908 100644
--- 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