omap mailbox: add initial omap3 support

[deliverable/linux.git] / arch / arm / mach-omap2 / mailbox.c

diff --git a/arch/arm/mach-omap2/mailbox.c b/arch/arm/mach-omap2/mailbox.c
index 4487a4de52f3adb68813374a1406388357ce9f98..d925ef3d7d4841ba648bb0e74cff7dedda962dc7 100644 (file)
--- a/arch/arm/mach-omap2/mailbox.c
+++ b/arch/arm/mach-omap2/mailbox.c
@@ -30,7 +30,7 @@
 #define MAILBOX_IRQ_NEWMSG(u)          (1 << (2 * (u)))
 #define MAILBOX_IRQ_NOTFULL(u)         (1 << (2 * (u) + 1))
 
-static unsigned long mbox_base;
+static void __iomem *mbox_base;
 
 struct omap_mbox2_fifo {
        unsigned long msg;
@@ -52,14 +52,14 @@ static struct clk *mbox_ick_handle;
 static void omap2_mbox_enable_irq(struct omap_mbox *mbox,
                                  omap_mbox_type_t irq);
 
-static inline unsigned int mbox_read_reg(unsigned int reg)
+static inline unsigned int mbox_read_reg(size_t ofs)
 {
-       return __raw_readl(mbox_base + reg);
+       return __raw_readl(mbox_base + ofs);
 }
 
-static inline void mbox_write_reg(unsigned int val, unsigned int reg)
+static inline void mbox_write_reg(u32 val, size_t ofs)
 {
-       __raw_writel(val, mbox_base + reg);
+       __raw_writel(val, mbox_base + ofs);
 }
 
 /* Mailbox H/W preparations */
@@ -208,7 +208,7 @@ struct omap_mbox mbox_dsp_info = {
 };
 EXPORT_SYMBOL(mbox_dsp_info);
 
-/* IVA */
+#if defined(CONFIG_ARCH_OMAP2420) /* IVA */
 static struct omap_mbox2_priv omap2_mbox_iva_priv = {
        .tx_fifo = {
                .msg            = MAILBOX_MESSAGE(2),
@@ -229,17 +229,12 @@ static struct omap_mbox mbox_iva_info = {
        .ops    = &omap2_mbox_ops,
        .priv   = &omap2_mbox_iva_priv,
 };
+#endif
 
 static int __init omap2_mbox_probe(struct platform_device *pdev)
 {
        struct resource *res;
-       int ret = 0;
-
-       if (pdev->num_resources != 3) {
-               dev_err(&pdev->dev, "invalid number of resources: %d\n",
-                       pdev->num_resources);
-               return -ENODEV;
-       }
+       int ret;
 
        /* MBOX base */
        res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
@@ -247,34 +242,53 @@ static int __init omap2_mbox_probe(struct platform_device *pdev)
                dev_err(&pdev->dev, "invalid mem resource\n");
                return -ENODEV;
        }
-       mbox_base = res->start;
+       mbox_base = ioremap(res->start, res->end - res->start);
+       if (!mbox_base)
+               return -ENOMEM;
 
-       /* DSP IRQ */
-       res = platform_get_resource(pdev, IORESOURCE_IRQ, 0);
-       if (unlikely(!res)) {
+       /* DSP or IVA2 IRQ */
+       mbox_dsp_info.irq = platform_get_irq(pdev, 0);
+       if (mbox_dsp_info.irq < 0) {
                dev_err(&pdev->dev, "invalid irq resource\n");
-               return -ENODEV;
+               ret = -ENODEV;
+               goto err_dsp;
        }
-       mbox_dsp_info.irq = res->start;
 
        ret = omap_mbox_register(&mbox_dsp_info);
-
-       /* IVA IRQ */
-       res = platform_get_resource(pdev, IORESOURCE_IRQ, 1);
-       if (unlikely(!res)) {
-               dev_err(&pdev->dev, "invalid irq resource\n");
-               return -ENODEV;
+       if (ret)
+               goto err_dsp;
+
+#if defined(CONFIG_ARCH_OMAP2420) /* IVA */
+       if (cpu_is_omap2420()) {
+               /* IVA IRQ */
+               res = platform_get_resource(pdev, IORESOURCE_IRQ, 1);
+               if (unlikely(!res)) {
+                       dev_err(&pdev->dev, "invalid irq resource\n");
+                       ret = -ENODEV;
+                       goto err_iva1;
+               }
+               mbox_iva_info.irq = res->start;
+               ret = omap_mbox_register(&mbox_iva_info);
+               if (ret)
+                       goto err_iva1;
        }
-       mbox_iva_info.irq = res->start;
-
-       ret = omap_mbox_register(&mbox_iva_info);
+#endif
+       return 0;
 
+err_iva1:
+       omap_mbox_unregister(&mbox_dsp_info);
+err_dsp:
+       iounmap(mbox_base);
        return ret;
 }
 
 static int omap2_mbox_remove(struct platform_device *pdev)
 {
+#if defined(CONFIG_ARCH_OMAP2420)
+       omap_mbox_unregister(&mbox_iva_info);
+#endif
        omap_mbox_unregister(&mbox_dsp_info);
+       iounmap(mbox_base);
        return 0;
 }