[ARM] 3455/1: ARM: OMAP: 7/8 Misc updates, take 2

[deliverable/linux.git] / arch / arm / mach-ixp4xx / common.c

diff --git a/arch/arm/mach-ixp4xx/common.c b/arch/arm/mach-ixp4xx/common.c
index f3c687cf00713dcbcaf20eb4689aac5f05818b98..a0888e160e3b7f180c8c91fafa9c636a284a919c 100644 (file)
--- a/arch/arm/mach-ixp4xx/common.c
+++ b/arch/arm/mach-ixp4xx/common.c
@@ -91,7 +91,7 @@ static void ixp4xx_config_irq(unsigned irq, enum ixp4xx_irq_type type);
 /*
  * IRQ -> GPIO mapping table
  */
-static int irq2gpio[32] = {
+static char irq2gpio[32] = {
        -1, -1, -1, -1, -1, -1,  0,  1,
        -1, -1, -1, -1, -1, -1, -1, -1,
        -1, -1, -1,  2,  3,  4,  5,  6,
@@ -111,24 +111,30 @@ static int ixp4xx_set_irq_type(unsigned int irq, unsigned int type)
        if (line < 0)
                return -EINVAL;
 
-       if (type & IRQT_BOTHEDGE) {
+       switch (type){
+       case IRQT_BOTHEDGE:
                int_style = IXP4XX_GPIO_STYLE_TRANSITIONAL;
                irq_type = IXP4XX_IRQ_EDGE;
-       } else  if (type & IRQT_RISING) {
+               break;
+       case IRQT_RISING:
                int_style = IXP4XX_GPIO_STYLE_RISING_EDGE;
                irq_type = IXP4XX_IRQ_EDGE;
-       } else if (type & IRQT_FALLING) {
+               break;
+       case IRQT_FALLING:
                int_style = IXP4XX_GPIO_STYLE_FALLING_EDGE;
                irq_type = IXP4XX_IRQ_EDGE;
-       } else if (type & IRQT_HIGH) {
+               break;
+       case IRQT_HIGH:
                int_style = IXP4XX_GPIO_STYLE_ACTIVE_HIGH;
                irq_type = IXP4XX_IRQ_LEVEL;
-       } else if (type & IRQT_LOW) {
+               break;
+       case IRQT_LOW:
                int_style = IXP4XX_GPIO_STYLE_ACTIVE_LOW;
                irq_type = IXP4XX_IRQ_LEVEL;
-       } else
+               break;
+       default:
                return -EINVAL;
-
+       }
        ixp4xx_config_irq(irq, irq_type);
 
        if (line >= 8) {        /* pins 8-15 */
@@ -142,9 +148,14 @@ static int ixp4xx_set_irq_type(unsigned int irq, unsigned int type)
        *int_reg &= ~(IXP4XX_GPIO_STYLE_CLEAR <<
                        (line * IXP4XX_GPIO_STYLE_SIZE));
 
+       *IXP4XX_GPIO_GPISR = (1 << line);
+
        /* Set the new style */
        *int_reg |= (int_style << (line * IXP4XX_GPIO_STYLE_SIZE));
 
+       /* Configure the line as an input */
+       gpio_line_config(line, IXP4XX_GPIO_IN);
+
        return 0;
 }
 
@@ -169,7 +180,7 @@ static void ixp4xx_irq_ack(unsigned int irq)
        int line = (irq < 32) ? irq2gpio[irq] : -1;
 
        if (line >= 0)
-               gpio_line_isr_clear(line);
+               *IXP4XX_GPIO_GPISR = (1 << line);
 }
 
 /*
@@ -330,11 +341,28 @@ static struct platform_device *ixp46x_devices[] __initdata = {
        &ixp46x_i2c_controller
 };
 
+unsigned long ixp4xx_exp_bus_size;
+EXPORT_SYMBOL(ixp4xx_exp_bus_size);
+
 void __init ixp4xx_sys_init(void)
 {
+       ixp4xx_exp_bus_size = SZ_16M;
+
        if (cpu_is_ixp46x()) {
+               int region;
+
                platform_add_devices(ixp46x_devices,
                                ARRAY_SIZE(ixp46x_devices));
+
+               for (region = 0; region < 7; region++) {
+                       if((*(IXP4XX_EXP_REG(0x4 * region)) & 0x200)) {
+                               ixp4xx_exp_bus_size = SZ_32M;
+                               break;
+                       }
+               }
        }
+
+       printk("IXP4xx: Using %luMiB expansion bus window size\n",
+                       ixp4xx_exp_bus_size >> 20);
 }