of: Merge of_device_alloc() and of_device_make_bus_id()
authorGrant Likely <grant.likely@secretlab.ca>
Tue, 8 Jun 2010 13:48:14 +0000 (07:48 -0600)
committerGrant Likely <grant.likely@secretlab.ca>
Mon, 5 Jul 2010 22:14:29 +0000 (16:14 -0600)
This patch merges the common routines of_device_alloc() and
of_device_make_bus_id() from powerpc and microblaze.

Signed-off-by: Grant Likely <grant.likely@secretlab.ca>
CC: Michal Simek <monstr@monstr.eu>
CC: Grant Likely <grant.likely@secretlab.ca>
CC: Benjamin Herrenschmidt <benh@kernel.crashing.org>
CC: Stephen Rothwell <sfr@canb.auug.org.au>
CC: microblaze-uclinux@itee.uq.edu.au
CC: linuxppc-dev@ozlabs.org
CC: devicetree-discuss@lists.ozlabs.org
arch/microblaze/include/asm/of_device.h
arch/microblaze/kernel/Makefile
arch/microblaze/kernel/of_device.c [deleted file]
arch/powerpc/include/asm/of_device.h
arch/powerpc/kernel/Makefile
arch/powerpc/kernel/of_device.c [deleted file]
drivers/of/platform.c
include/linux/of_platform.h

index c9be534..47e8d42 100644 (file)
 
 #ifndef _ASM_MICROBLAZE_OF_DEVICE_H
 #define _ASM_MICROBLAZE_OF_DEVICE_H
-#ifdef __KERNEL__
-
-#include <linux/device.h>
-#include <linux/of.h>
-
-extern struct of_device *of_device_alloc(struct device_node *np,
-                                        const char *bus_id,
-                                        struct device *parent);
-
-extern void of_device_make_bus_id(struct of_device *dev);
-
-/* This is just here during the transition */
-#include <linux/of_device.h>
-
-#endif /* __KERNEL__ */
 #endif /* _ASM_MICROBLAZE_OF_DEVICE_H */
index e51bc15..727e2cb 100644 (file)
@@ -15,7 +15,7 @@ endif
 extra-y := head.o vmlinux.lds
 
 obj-y += dma.o exceptions.o \
-       hw_exception_handler.o init_task.o intc.o irq.o of_device.o \
+       hw_exception_handler.o init_task.o intc.o irq.o \
        of_platform.o process.o prom.o prom_parse.o ptrace.o \
        setup.o signal.o sys_microblaze.o timer.o traps.o reset.o
 
diff --git a/arch/microblaze/kernel/of_device.c b/arch/microblaze/kernel/of_device.c
deleted file mode 100644 (file)
index 3a367d7..0000000
+++ /dev/null
@@ -1,64 +0,0 @@
-#include <linux/string.h>
-#include <linux/kernel.h>
-#include <linux/of.h>
-#include <linux/init.h>
-#include <linux/module.h>
-#include <linux/mod_devicetable.h>
-#include <linux/slab.h>
-#include <linux/of_device.h>
-
-#include <linux/errno.h>
-
-void of_device_make_bus_id(struct of_device *dev)
-{
-       static atomic_t bus_no_reg_magic;
-       struct device_node *node = dev->dev.of_node;
-       const u32 *reg;
-       u64 addr;
-       int magic;
-
-       /*
-        * For MMIO, get the physical address
-        */
-       reg = of_get_property(node, "reg", NULL);
-       if (reg) {
-               addr = of_translate_address(node, reg);
-               if (addr != OF_BAD_ADDR) {
-                       dev_set_name(&dev->dev, "%llx.%s",
-                                    (unsigned long long)addr, node->name);
-                       return;
-               }
-       }
-
-       /*
-        * No BusID, use the node name and add a globally incremented
-        * counter (and pray...)
-        */
-       magic = atomic_add_return(1, &bus_no_reg_magic);
-       dev_set_name(&dev->dev, "%s.%d", node->name, magic - 1);
-}
-EXPORT_SYMBOL(of_device_make_bus_id);
-
-struct of_device *of_device_alloc(struct device_node *np,
-                                 const char *bus_id,
-                                 struct device *parent)
-{
-       struct of_device *dev;
-
-       dev = kzalloc(sizeof(*dev), GFP_KERNEL);
-       if (!dev)
-               return NULL;
-
-       dev->dev.of_node = of_node_get(np);
-       dev->dev.dma_mask = &dev->archdata.dma_mask;
-       dev->dev.parent = parent;
-       dev->dev.release = of_release_dev;
-
-       if (bus_id)
-               dev_set_name(&dev->dev, bus_id);
-       else
-               of_device_make_bus_id(dev);
-
-       return dev;
-}
-EXPORT_SYMBOL(of_device_alloc);
index 5d5103c..04f7671 100644 (file)
@@ -1,13 +1,3 @@
 #ifndef _ASM_POWERPC_OF_DEVICE_H
 #define _ASM_POWERPC_OF_DEVICE_H
-#ifdef __KERNEL__
-
-#include <linux/device.h>
-#include <linux/of.h>
-
-extern struct of_device *of_device_alloc(struct device_node *np,
-                                        const char *bus_id,
-                                        struct device *parent);
-
-#endif /* __KERNEL__ */
 #endif /* _ASM_POWERPC_OF_DEVICE_H */
index 58d0572..83aa1fd 100644 (file)
@@ -40,7 +40,7 @@ obj-$(CONFIG_PPC_BOOK3E_64)   += exceptions-64e.o
 obj-$(CONFIG_PPC64)            += vdso64/
 obj-$(CONFIG_ALTIVEC)          += vecemu.o
 obj-$(CONFIG_PPC_970_NAP)      += idle_power4.o
-obj-$(CONFIG_PPC_OF)           += of_device.o of_platform.o prom_parse.o
+obj-$(CONFIG_PPC_OF)           += of_platform.o prom_parse.o
 obj-$(CONFIG_PPC_CLOCK)                += clock.o
 procfs-y                       := proc_powerpc.o
 obj-$(CONFIG_PROC_FS)          += $(procfs-y)
diff --git a/arch/powerpc/kernel/of_device.c b/arch/powerpc/kernel/of_device.c
deleted file mode 100644 (file)
index db91a9d..0000000
+++ /dev/null
@@ -1,84 +0,0 @@
-#include <linux/string.h>
-#include <linux/kernel.h>
-#include <linux/of.h>
-#include <linux/init.h>
-#include <linux/module.h>
-#include <linux/mod_devicetable.h>
-#include <linux/slab.h>
-#include <linux/of_device.h>
-
-#include <asm/errno.h>
-#include <asm/dcr.h>
-
-static void of_device_make_bus_id(struct of_device *dev)
-{
-       static atomic_t bus_no_reg_magic;
-       struct device_node *node = dev->dev.of_node;
-       const u32 *reg;
-       u64 addr;
-       int magic;
-
-       /*
-        * If it's a DCR based device, use 'd' for native DCRs
-        * and 'D' for MMIO DCRs.
-        */
-#ifdef CONFIG_PPC_DCR
-       reg = of_get_property(node, "dcr-reg", NULL);
-       if (reg) {
-#ifdef CONFIG_PPC_DCR_NATIVE
-               dev_set_name(&dev->dev, "d%x.%s", *reg, node->name);
-#else /* CONFIG_PPC_DCR_NATIVE */
-               addr = of_translate_dcr_address(node, *reg, NULL);
-               if (addr != OF_BAD_ADDR) {
-                       dev_set_name(&dev->dev, "D%llx.%s",
-                                    (unsigned long long)addr, node->name);
-                       return;
-               }
-#endif /* !CONFIG_PPC_DCR_NATIVE */
-       }
-#endif /* CONFIG_PPC_DCR */
-
-       /*
-        * For MMIO, get the physical address
-        */
-       reg = of_get_property(node, "reg", NULL);
-       if (reg) {
-               addr = of_translate_address(node, reg);
-               if (addr != OF_BAD_ADDR) {
-                       dev_set_name(&dev->dev, "%llx.%s",
-                                    (unsigned long long)addr, node->name);
-                       return;
-               }
-       }
-
-       /*
-        * No BusID, use the node name and add a globally incremented
-        * counter (and pray...)
-        */
-       magic = atomic_add_return(1, &bus_no_reg_magic);
-       dev_set_name(&dev->dev, "%s.%d", node->name, magic - 1);
-}
-
-struct of_device *of_device_alloc(struct device_node *np,
-                                 const char *bus_id,
-                                 struct device *parent)
-{
-       struct of_device *dev;
-
-       dev = kzalloc(sizeof(*dev), GFP_KERNEL);
-       if (!dev)
-               return NULL;
-
-       dev->dev.of_node = of_node_get(np);
-       dev->dev.dma_mask = &dev->archdata.dma_mask;
-       dev->dev.parent = parent;
-       dev->dev.release = of_release_dev;
-
-       if (bus_id)
-               dev_set_name(&dev->dev, "%s", bus_id);
-       else
-               of_device_make_bus_id(dev);
-
-       return dev;
-}
-EXPORT_SYMBOL(of_device_alloc);
index d9c81e9..ea87a3c 100644 (file)
@@ -408,6 +408,93 @@ EXPORT_SYMBOL(of_unregister_driver);
  */
 
 /**
+ * of_device_make_bus_id - Use the device node data to assign a unique name
+ * @dev: pointer to device structure that is linked to a device tree node
+ *
+ * This routine will first try using either the dcr-reg or the reg property
+ * value to derive a unique name.  As a last resort it will use the node
+ * name followed by a unique number.
+ */
+static void of_device_make_bus_id(struct device *dev)
+{
+       static atomic_t bus_no_reg_magic;
+       struct device_node *node = dev->of_node;
+       const u32 *reg;
+       u64 addr;
+       int magic;
+
+#ifdef CONFIG_PPC_DCR
+       /*
+        * If it's a DCR based device, use 'd' for native DCRs
+        * and 'D' for MMIO DCRs.
+        */
+       reg = of_get_property(node, "dcr-reg", NULL);
+       if (reg) {
+#ifdef CONFIG_PPC_DCR_NATIVE
+               dev_set_name(dev, "d%x.%s", *reg, node->name);
+#else /* CONFIG_PPC_DCR_NATIVE */
+               u64 addr = of_translate_dcr_address(node, *reg, NULL);
+               if (addr != OF_BAD_ADDR) {
+                       dev_set_name(dev, "D%llx.%s",
+                                    (unsigned long long)addr, node->name);
+                       return;
+               }
+#endif /* !CONFIG_PPC_DCR_NATIVE */
+       }
+#endif /* CONFIG_PPC_DCR */
+
+       /*
+        * For MMIO, get the physical address
+        */
+       reg = of_get_property(node, "reg", NULL);
+       if (reg) {
+               addr = of_translate_address(node, reg);
+               if (addr != OF_BAD_ADDR) {
+                       dev_set_name(dev, "%llx.%s",
+                                    (unsigned long long)addr, node->name);
+                       return;
+               }
+       }
+
+       /*
+        * No BusID, use the node name and add a globally incremented
+        * counter (and pray...)
+        */
+       magic = atomic_add_return(1, &bus_no_reg_magic);
+       dev_set_name(dev, "%s.%d", node->name, magic - 1);
+}
+
+/**
+ * of_device_alloc - Allocate and initialize an of_device
+ * @np: device node to assign to device
+ * @bus_id: Name to assign to the device.  May be null to use default name.
+ * @parent: Parent device.
+ */
+struct of_device *of_device_alloc(struct device_node *np,
+                                 const char *bus_id,
+                                 struct device *parent)
+{
+       struct of_device *dev;
+
+       dev = kzalloc(sizeof(*dev), GFP_KERNEL);
+       if (!dev)
+               return NULL;
+
+       dev->dev.of_node = of_node_get(np);
+       dev->dev.dma_mask = &dev->archdata.dma_mask;
+       dev->dev.parent = parent;
+       dev->dev.release = of_release_dev;
+
+       if (bus_id)
+               dev_set_name(&dev->dev, "%s", bus_id);
+       else
+               of_device_make_bus_id(&dev->dev);
+
+       return dev;
+}
+EXPORT_SYMBOL(of_device_alloc);
+
+/**
  * of_platform_device_create - Alloc, initialize and register an of_device
  * @np: pointer to node to create device for
  * @bus_id: name to assign device
index 4bbba41..a51fd30 100644 (file)
@@ -60,6 +60,9 @@ static inline void of_unregister_platform_driver(struct of_platform_driver *drv)
        of_unregister_driver(drv);
 }
 
+extern struct of_device *of_device_alloc(struct device_node *np,
+                                        const char *bus_id,
+                                        struct device *parent);
 #include <asm/of_platform.h>
 
 extern struct of_device *of_find_device_by_node(struct device_node *np);