ARM: OMAP2+: Fix module address for modules using mpu_rt_idx

[linux-2.6-microblaze.git] / arch / arm / mach-omap2 / omap_hwmod.c

diff --git a/arch/arm/mach-omap2/omap_hwmod.c b/arch/arm/mach-omap2/omap_hwmod.c
index 7f759ab..cd65ea4 100644 (file)
--- a/arch/arm/mach-omap2/omap_hwmod.c
+++ b/arch/arm/mach-omap2/omap_hwmod.c
@@ -2160,6 +2160,37 @@ static int of_dev_hwmod_lookup(struct device_node *np,
        return -ENODEV;
 }
 
+/**
+ * omap_hwmod_fix_mpu_rt_idx - fix up mpu_rt_idx register offsets
+ *
+ * @oh: struct omap_hwmod *
+ * @np: struct device_node *
+ *
+ * Fix up module register offsets for modules with mpu_rt_idx.
+ * Only needed for cpsw with interconnect target module defined
+ * in device tree while still using legacy hwmod platform data
+ * for rev, sysc and syss registers.
+ *
+ * Can be removed when all cpsw hwmod platform data has been
+ * dropped.
+ */
+static void omap_hwmod_fix_mpu_rt_idx(struct omap_hwmod *oh,
+                                     struct device_node *np,
+                                     struct resource *res)
+{
+       struct device_node *child = NULL;
+       int error;
+
+       child = of_get_next_child(np, child);
+       if (!child)
+               return;
+
+       error = of_address_to_resource(child, oh->mpu_rt_idx, res);
+       if (error)
+               pr_err("%s: error mapping mpu_rt_idx: %i\n",
+                      __func__, error);
+}
+
 /**
  * omap_hwmod_parse_module_range - map module IO range from device tree
  * @oh: struct omap_hwmod *
@@ -2222,6 +2253,12 @@ int omap_hwmod_parse_module_range(struct omap_hwmod *oh,
        pr_debug("omap_hwmod: %s %s at 0x%llx size 0x%llx\n",
                 oh ? oh->name : "", np->name, base, size);
 
+       if (oh && oh->mpu_rt_idx) {
+               omap_hwmod_fix_mpu_rt_idx(oh, np, res);
+
+               return 0;
+       }
+
        res->start = base;
        res->end = base + size - 1;
        res->flags = IORESOURCE_MEM;