[SPARC64]: Convert Cheetah memory controller driver to in-kernel PROM tree.

Signed-off-by: David S. Miller <davem@davemloft.net>

1 files changed, 25 insertions, 44 deletions

diff --git a/arch/sparc64/kernel/chmc.c b/arch/sparc64/kernel/chmc.c
index 97cf912f0853..259f37e516f5 100644
--- a/arch/sparc64/kernel/chmc.c
+++ b/arch/sparc64/kernel/chmc.c
@@ -17,6 +17,7 @@
 #include <asm/spitfire.h>
 #include <asm/chmctrl.h>
 #include <asm/oplib.h>
+#include <asm/prom.h>
 #include <asm/io.h>
 
 #define CHMCTRL_NDGRPS  2
@@ -67,7 +68,6 @@ struct bank_info {
 struct mctrl_info {
         struct list_head        list;
         int                     portid;
-        int                     index;
 
         struct obp_mem_layout   layout_prop;
         int                     layout_size;
@@ -339,12 +339,13 @@ static void fetch_decode_regs(struct mctrl_info *mp)
                                  read_mcreg(mp, CHMCTRL_DECODE4));
 }
 
-static int init_one_mctrl(int node, int index)
+static int init_one_mctrl(struct device_node *dp)
 {
         struct mctrl_info *mp = kmalloc(sizeof(*mp), GFP_KERNEL);
-        int portid = prom_getintdefault(node, "portid", -1);
-        struct linux_prom64_registers p_reg_prop;
-        int t;
+        int portid = of_getintprop_default(dp, "portid", -1);
+        struct linux_prom64_registers *regs;
+        void *pval;
+        int len;
 
         if (!mp)
                 return -1;
@@ -353,24 +354,21 @@ static int init_one_mctrl(int node, int index)
                 goto fail;
 
         mp->portid = portid;
-        mp->layout_size = prom_getproplen(node, "memory-layout");
-        if (mp->layout_size < 0)
+        pval = of_get_property(dp, "memory-layout", &len);
+        mp->layout_size = len;
+        if (!pval)
                 mp->layout_size = 0;
-        if (mp->layout_size > sizeof(mp->layout_prop))
-                goto fail;
-
-        if (mp->layout_size > 0)
-                prom_getproperty(node, "memory-layout",
-                                 (char *) &mp->layout_prop,
-                                 mp->layout_size);
+        else {
+                if (mp->layout_size > sizeof(mp->layout_prop))
+                        goto fail;
+                memcpy(&mp->layout_prop, pval, len);
+        }
 
-        t = prom_getproperty(node, "reg",
-                             (char *) &p_reg_prop,
-                             sizeof(p_reg_prop));
-        if (t < 0 || p_reg_prop.reg_size != 0x48)
+        regs = of_get_property(dp, "reg", NULL);
+        if (!regs || regs->reg_size != 0x48)
                 goto fail;
 
-        mp->regs = ioremap(p_reg_prop.phys_addr, p_reg_prop.reg_size);
+        mp->regs = ioremap(regs->phys_addr, regs->reg_size);
         if (mp->regs == NULL)
                 goto fail;
 
@@ -384,13 +382,11 @@ static int init_one_mctrl(int node, int index)
 
         fetch_decode_regs(mp);
 
-        mp->index = index;
-
         list_add(&mp->list, &mctrl_list);
 
         /* Report the device. */
-        printk(KERN_INFO "chmc%d: US3 memory controller at %p [%s]\n",
-               mp->index,
+        printk(KERN_INFO "%s: US3 memory controller at %p [%s]\n",
+               dp->full_name,
                mp->regs, (mp->layout_size ? "ACTIVE" : "INACTIVE"));
 
         return 0;
@@ -404,34 +400,19 @@ fail:
         return -1;
 }
 
-static int __init probe_for_string(char *name, int index)
-{
-        int node = prom_getchild(prom_root_node);
-
-        while ((node = prom_searchsiblings(node, name)) != 0) {
-                int ret = init_one_mctrl(node, index);
-
-                if (!ret)
-                        index++;
-
-                node = prom_getsibling(node);
-                if (!node)
-                        break;
-        }
-
-        return index;
-}
-
 static int __init chmc_init(void)
 {
-        int index;
+        struct device_node *dp;
 
         /* This driver is only for cheetah platforms. */
         if (tlb_type != cheetah && tlb_type != cheetah_plus)
                 return -ENODEV;
 
-        index = probe_for_string("memory-controller", 0);
-        index = probe_for_string("mc-us3", index);
+        for_each_node_by_name(dp, "memory-controller")
+                init_one_mctrl(dp);
+
+        for_each_node_by_name(dp, "mc-us3")
+                init_one_mctrl(dp);
 
         return 0;
 }