imx: Make imx25 compatible to mxc_gpio driver and fix in tx25

Adding support for mxc_gpio driver for imx25 and fix names of registers in tx25
board.

Signed-off-by: Matthias Weisser <weisserm@arcor.de>

arch/arm/include/asm/arch-mx25/imx-regs.h

@@ -86,8 +86,8 @@ struct esdramc_regs {
 
 /* GPIO registers */
 struct gpio_regs {
-	u32 dr;		/* data */
-	u32 dir;	/* direction */
+	u32 gpio_dr;	/* data */
+	u32 gpio_dir;	/* direction */
 	u32 psr;	/* pad satus */
 	u32 icr1;	/* interrupt config 1 */
 	u32 icr2;	/* interrupt config 2 */
@@ -357,4 +357,10 @@ struct aips_regs {
 #define WSR_UNLOCK1		0x5555
 #define WSR_UNLOCK2		0xAAAA
 
+/* Names used in GPIO driver */
+#define GPIO1_BASE_ADDR		IMX_GPIO1_BASE
+#define GPIO2_BASE_ADDR		IMX_GPIO2_BASE
+#define GPIO3_BASE_ADDR		IMX_GPIO3_BASE
+#define GPIO4_BASE_ADDR		IMX_GPIO4_BASE
+
 #endif				/* _IMX_REGS_H */

board/karo/tx25/tx25.c

@@ -70,18 +70,18 @@ void tx25_fec_init(void)
 	writel(0x0, &padctl->pad_d11);
 
 	/* drop PHY power and assert reset (low) */
-	val = readl(&gpio4->dr) & ~((1 << 7) | (1 << 9));
-	writel(val, &gpio4->dr);
-	val = readl(&gpio4->dir) | (1 << 7) | (1 << 9);
-	writel(val, &gpio4->dir);
+	val = readl(&gpio4->gpio_dr) & ~((1 << 7) | (1 << 9));
+	writel(val, &gpio4->gpio_dr);
+	val = readl(&gpio4->gpio_dir) | (1 << 7) | (1 << 9);
+	writel(val, &gpio4->gpio_dir);
 
 	mdelay(5);
 
 	debug("resetting phy\n");
 
 	/* turn on PHY power leaving reset asserted */
-	val = readl(&gpio4->dr) | 1 << 9;
-	writel(val, &gpio4->dr);
+	val = readl(&gpio4->gpio_dr) | 1 << 9;
+	writel(val, &gpio4->gpio_dr);
 
 	mdelay(10);
 
@@ -111,19 +111,19 @@ void tx25_fec_init(void)
 	/*
 	 * set each to 1 and make each an output
 	 */
-	val = readl(&gpio3->dr) | (1 << 10) | (1 << 11) | (1 << 12);
-	writel(val, &gpio3->dr);
-	val = readl(&gpio3->dir) | (1 << 10) | (1 << 11) | (1 << 12);
-	writel(val, &gpio3->dir);
+	val = readl(&gpio3->gpio_dr) | (1 << 10) | (1 << 11) | (1 << 12);
+	writel(val, &gpio3->gpio_dr);
+	val = readl(&gpio3->gpio_dir) | (1 << 10) | (1 << 11) | (1 << 12);
+	writel(val, &gpio3->gpio_dir);
 
 	mdelay(22);		/* this value came from RedBoot */
 
 	/*
 	 * deassert PHY reset
 	 */
-	val = readl(&gpio4->dr) | 1 << 7;
-	writel(val, &gpio4->dr);
-	writel(val, &gpio4->dr);
+	val = readl(&gpio4->gpio_dr) | 1 << 7;
+	writel(val, &gpio4->gpio_dr);
+	writel(val, &gpio4->gpio_dr);
 
 	mdelay(5);
 

include/mxc_gpio.h

@@ -24,6 +24,11 @@
 #ifndef __MXC_GPIO_H
 #define __MXC_GPIO_H
 
+/* Converts a GPIO port number and the internal bit position
+ * to the GPIO number
+ */
+#define MXC_GPIO_PORT_TO_NUM(port, bit) (((port - 1) << 5) + (bit & 0x1f))
+
 enum mxc_gpio_direction {
 	MXC_GPIO_DIRECTION_IN,
 	MXC_GPIO_DIRECTION_OUT,