Merge git://git.infradead.org/embedded-2.6

[linux-2.6-omap-h63xx.git] / arch / powerpc / platforms / 52xx / mpc52xx_pic.c

diff --git a/arch/powerpc/platforms/52xx/mpc52xx_pic.c b/arch/powerpc/platforms/52xx/mpc52xx_pic.c
index fbfff95b4437e9b92113c9f9929d123fe8ad6291..8479394e9ab4cb884d6f329ec02cc233934c69c0 100644 (file)
--- a/arch/powerpc/platforms/52xx/mpc52xx_pic.c
+++ b/arch/powerpc/platforms/52xx/mpc52xx_pic.c
@@ -18,19 +18,10 @@
 
 #undef DEBUG
 
-#include <linux/stddef.h>
-#include <linux/init.h>
-#include <linux/sched.h>
-#include <linux/signal.h>
-#include <linux/stddef.h>
-#include <linux/delay.h>
+#include <linux/interrupt.h>
 #include <linux/irq.h>
-#include <linux/hardirq.h>
-
+#include <linux/of.h>
 #include <asm/io.h>
-#include <asm/processor.h>
-#include <asm/system.h>
-#include <asm/irq.h>
 #include <asm/prom.h>
 #include <asm/mpc52xx.h>
 #include "mpc52xx_pic.h"
@@ -39,6 +30,18 @@
  *
 */
 
+/* MPC5200 device tree match tables */
+static struct of_device_id mpc52xx_pic_ids[] __initdata = {
+       { .compatible = "fsl,mpc5200-pic", },
+       { .compatible = "mpc5200-pic", },
+       {}
+};
+static struct of_device_id mpc52xx_sdma_ids[] __initdata = {
+       { .compatible = "fsl,mpc5200-bestcomm", },
+       { .compatible = "mpc5200-bestcomm", },
+       {}
+};
+
 static struct mpc52xx_intr __iomem *intr;
 static struct mpc52xx_sdma __iomem *sdma;
 static struct irq_host *mpc52xx_irqhost = NULL;
@@ -107,11 +110,48 @@ static void mpc52xx_extirq_ack(unsigned int virq)
        io_be_setbit(&intr->ctrl, 27-l2irq);
 }
 
+static int mpc52xx_extirq_set_type(unsigned int virq, unsigned int flow_type)
+{
+       u32 ctrl_reg, type;
+       int irq;
+       int l2irq;
+
+       irq = irq_map[virq].hwirq;
+       l2irq = (irq & MPC52xx_IRQ_L2_MASK) >> MPC52xx_IRQ_L2_OFFSET;
+
+       pr_debug("%s: irq=%x. l2=%d flow_type=%d\n", __func__, irq, l2irq, flow_type);
+
+       switch (flow_type) {
+       case IRQF_TRIGGER_HIGH:
+               type = 0;
+               break;
+       case IRQF_TRIGGER_RISING:
+               type = 1;
+               break;
+       case IRQF_TRIGGER_FALLING:
+               type = 2;
+               break;
+       case IRQF_TRIGGER_LOW:
+               type = 3;
+               break;
+       default:
+               type = 0;
+       }
+
+       ctrl_reg = in_be32(&intr->ctrl);
+       ctrl_reg &= ~(0x3 << (22 - (l2irq * 2)));
+       ctrl_reg |= (type << (22 - (l2irq * 2)));
+       out_be32(&intr->ctrl, ctrl_reg);
+
+       return 0;
+}
+
 static struct irq_chip mpc52xx_extirq_irqchip = {
        .typename = " MPC52xx IRQ[0-3] ",
        .mask = mpc52xx_extirq_mask,
        .unmask = mpc52xx_extirq_unmask,
        .ack = mpc52xx_extirq_ack,
+       .set_type = mpc52xx_extirq_set_type,
 };
 
 /*
@@ -242,12 +282,6 @@ static struct irq_chip mpc52xx_sdma_irqchip = {
  * irq_host
 */
 
-static int mpc52xx_irqhost_match(struct irq_host *h, struct device_node *node)
-{
-       pr_debug("%s: node=%p\n", __func__, node);
-       return mpc52xx_irqhost->host_data == node;
-}
-
 static int mpc52xx_irqhost_xlate(struct irq_host *h, struct device_node *ct,
                                 u32 * intspec, unsigned int intsize,
                                 irq_hw_number_t * out_hwirq,
@@ -368,7 +402,6 @@ static int mpc52xx_irqhost_map(struct irq_host *h, unsigned int virq,
 }
 
 static struct irq_host_ops mpc52xx_irqhost_ops = {
-       .match = mpc52xx_irqhost_match,
        .xlate = mpc52xx_irqhost_xlate,
        .map = mpc52xx_irqhost_map,
 };
@@ -381,16 +414,18 @@ void __init mpc52xx_init_irq(void)
 {
        u32 intr_ctrl;
        struct device_node *picnode;
+       struct device_node *np;
 
        /* Remap the necessary zones */
-       picnode = of_find_compatible_node(NULL, NULL, "mpc5200-pic");
-
-       intr = mpc52xx_find_and_map("mpc5200-pic");
+       picnode = of_find_matching_node(NULL, mpc52xx_pic_ids);
+       intr = of_iomap(picnode, 0);
        if (!intr)
                panic(__FILE__  ": find_and_map failed on 'mpc5200-pic'. "
                                "Check node !");
 
-       sdma = mpc52xx_find_and_map("mpc5200-bestcomm");
+       np = of_find_matching_node(NULL, mpc52xx_sdma_ids);
+       sdma = of_iomap(np, 0);
+       of_node_put(np);
        if (!sdma)
                panic(__FILE__  ": find_and_map failed on 'mpc5200-bestcomm'. "
                                "Check node !");
@@ -420,14 +455,13 @@ void __init mpc52xx_init_irq(void)
         * hw irq information provided by the ofw to linux virq
         */
 
-       mpc52xx_irqhost = irq_alloc_host(IRQ_HOST_MAP_LINEAR,
+       mpc52xx_irqhost = irq_alloc_host(picnode, IRQ_HOST_MAP_LINEAR,
                                         MPC52xx_IRQ_HIGHTESTHWIRQ,
                                         &mpc52xx_irqhost_ops, -1);
 
        if (!mpc52xx_irqhost)
                panic(__FILE__ ": Cannot allocate the IRQ host\n");
 
-       mpc52xx_irqhost->host_data = picnode;
        printk(KERN_INFO "MPC52xx PIC is up and running!\n");
 }