Merge tag 'devicetree-for-3.16' of git://git.kernel.org/pub/scm/linux/kernel/git/robh/linux into next

Pull DeviceTree updates from Rob Herring:
 - Another round of clean-up of FDT related code in architecture code.
   This removes knowledge of internal FDT details from most
   architectures except powerpc.
 - Conversion of kernel's custom FDT parsing code to use libfdt.
 - DT based initialization for generic serial earlycon.  The
   introduction of generic serial earlycon support went in through the
   tty tree.
 - Improve the platform device naming for DT probed devices to ensure
   unique naming and use parent names instead of a global index.
 - Fix a race condition in of_update_property.
 - Unify the various linker section OF match tables and fix several
   function prototype errors.
 - Update platform_get_irq_byname to work in deferred probe cases.
 - 2 binding doc updates

* tag 'devicetree-for-3.16' of git://git.kernel.org/pub/scm/linux/kernel/git/robh/linux: (58 commits)
  of: handle NULL node in next_child iterators
  of/irq: provide more wrappers for !CONFIG_OF
  devicetree: bindings: Document micrel vendor prefix
  dt: bindings: dwc2: fix required value for the phy-names property
  of_pci_irq: kill useless variable in of_irq_parse_pci()
  of/irq: do irq resolution in platform_get_irq_byname()
  of: Add a testcase for of_find_node_by_path()
  of: Make of_find_node_by_path() handle /aliases
  of: Create unlocked version of for_each_child_of_node()
  lib: add glibc style strchrnul() variant
  of: Handle memory@0 node on PPC32 only
  pci/of: Remove dead code
  of: fix race between search and remove in of_update_property()
  of: Use NULL for pointers
  of: Stop naming platform_device using dcr address
  of: Ensure unique names without sacrificing determinism
  tty/serial: pl011: add DT based earlycon support
  of/fdt: add FDT serial scanning for earlycon
  of/fdt: add FDT address translation support
  serial: earlycon: add DT support
  ...

10 files changed, 91 insertions, 89 deletions

diff --git a/include/linux/clk-provider.h b/include/linux/clk-provider.h
index fb4eca6907c..f295bab1865 100644
--- a/include/linux/clk-provider.h
+++ b/include/linux/clk-provider.h
@@ -529,10 +529,7 @@ struct clk_onecell_data {
 
 extern struct of_device_id __clk_of_table;
 
-#define CLK_OF_DECLARE(name, compat, fn)			\
-	static const struct of_device_id __clk_of_table_##name	\
-		__used __section(__clk_of_table)		\
-		= { .compatible = compat, .data = fn };
+#define CLK_OF_DECLARE(name, compat, fn) OF_DECLARE_1(clk, name, compat, fn)
 
 #ifdef CONFIG_OF
 int of_clk_add_provider(struct device_node *np,
diff --git a/include/linux/clocksource.h b/include/linux/clocksource.h
index 67301a40571..a16b497d515 100644
--- a/include/linux/clocksource.h
+++ b/include/linux/clocksource.h
@@ -339,23 +339,13 @@ extern int clocksource_mmio_init(void __iomem *, const char *,
 
 extern int clocksource_i8253_init(void);
 
-struct device_node;
-typedef void(*clocksource_of_init_fn)(struct device_node *);
+#define CLOCKSOURCE_OF_DECLARE(name, compat, fn) \
+	OF_DECLARE_1(clksrc, name, compat, fn)
+
 #ifdef CONFIG_CLKSRC_OF
 extern void clocksource_of_init(void);
-
-#define CLOCKSOURCE_OF_DECLARE(name, compat, fn)			\
-	static const struct of_device_id __clksrc_of_table_##name	\
-		__used __section(__clksrc_of_table)			\
-		 = { .compatible = compat,				\
-		     .data = (fn == (clocksource_of_init_fn)NULL) ? fn : fn }
 #else
 static inline void clocksource_of_init(void) {}
-#define CLOCKSOURCE_OF_DECLARE(name, compat, fn)			\
-	static const struct of_device_id __clksrc_of_table_##name	\
-		__attribute__((unused))					\
-		 = { .compatible = compat,				\
-		     .data = (fn == (clocksource_of_init_fn)NULL) ? fn : fn }
 #endif
 
 #endif /* _LINUX_CLOCKSOURCE_H */
diff --git a/include/linux/of.h b/include/linux/of.h
index fa362867b45..196b34c1ef4 100644
--- a/include/linux/of.h
+++ b/include/linux/of.h
@@ -764,4 +764,26 @@ static inline int of_get_available_child_count(const struct device_node *np)
 	return num;
 }
 
+#ifdef CONFIG_OF
+#define _OF_DECLARE(table, name, compat, fn, fn_type)			\
+	static const struct of_device_id __of_table_##name		\
+		__used __section(__##table##_of_table)			\
+		 = { .compatible = compat,				\
+		     .data = (fn == (fn_type)NULL) ? fn : fn  }
+#else
+#define _OF_DECLARE(table, name, compat, fn, fn_type)					\
+	static const struct of_device_id __of_table_##name		\
+		__attribute__((unused))					\
+		 = { .compatible = compat,				\
+		     .data = (fn == (fn_type)NULL) ? fn : fn }
+#endif
+
+typedef int (*of_init_fn_2)(struct device_node *, struct device_node *);
+typedef void (*of_init_fn_1)(struct device_node *);
+
+#define OF_DECLARE_1(table, name, compat, fn) \
+		_OF_DECLARE(table, name, compat, fn, of_init_fn_1)
+#define OF_DECLARE_2(table, name, compat, fn) \
+		_OF_DECLARE(table, name, compat, fn, of_init_fn_2)
+
 #endif /* _LINUX_OF_H */
diff --git a/include/linux/of_address.h b/include/linux/of_address.h
index 5f6ed6b182b..906ca768175 100644
--- a/include/linux/of_address.h
+++ b/include/linux/of_address.h
@@ -40,7 +40,6 @@ extern u64 of_translate_dma_address(struct device_node *dev,
 
 #ifdef CONFIG_OF_ADDRESS
 extern u64 of_translate_address(struct device_node *np, const __be32 *addr);
-extern bool of_can_translate_address(struct device_node *dev);
 extern int of_address_to_resource(struct device_node *dev, int index,
 				  struct resource *r);
 extern struct device_node *of_find_matching_node_by_address(
diff --git a/include/linux/of_fdt.h b/include/linux/of_fdt.h
index ddd7219af8a..05117899fcb 100644
--- a/include/linux/of_fdt.h
+++ b/include/linux/of_fdt.h
@@ -17,60 +17,23 @@
 
 /* Definitions used by the flattened device tree */
 #define OF_DT_HEADER		0xd00dfeed	/* marker */
-#define OF_DT_BEGIN_NODE	0x1		/* Start of node, full name */
-#define OF_DT_END_NODE		0x2		/* End node */
-#define OF_DT_PROP		0x3		/* Property: name off, size,
-						 * content */
-#define OF_DT_NOP		0x4		/* nop */
-#define OF_DT_END		0x9
-
-#define OF_DT_VERSION		0x10
 
 #ifndef __ASSEMBLY__
-/*
- * This is what gets passed to the kernel by prom_init or kexec
- *
- * The dt struct contains the device tree structure, full pathes and
- * property contents. The dt strings contain a separate block with just
- * the strings for the property names, and is fully page aligned and
- * self contained in a page, so that it can be kept around by the kernel,
- * each property name appears only once in this page (cheap compression)
- *
- * the mem_rsvmap contains a map of reserved ranges of physical memory,
- * passing it here instead of in the device-tree itself greatly simplifies
- * the job of everybody. It's just a list of u64 pairs (base/size) that
- * ends when size is 0
- */
-struct boot_param_header {
-	__be32	magic;			/* magic word OF_DT_HEADER */
-	__be32	totalsize;		/* total size of DT block */
-	__be32	off_dt_struct;		/* offset to structure */
-	__be32	off_dt_strings;		/* offset to strings */
-	__be32	off_mem_rsvmap;		/* offset to memory reserve map */
-	__be32	version;		/* format version */
-	__be32	last_comp_version;	/* last compatible version */
-	/* version 2 fields below */
-	__be32	boot_cpuid_phys;	/* Physical CPU id we're booting on */
-	/* version 3 fields below */
-	__be32	dt_strings_size;	/* size of the DT strings block */
-	/* version 17 fields below */
-	__be32	dt_struct_size;		/* size of the DT structure block */
-};
 
 #if defined(CONFIG_OF_FLATTREE)
 
 struct device_node;
 
 /* For scanning an arbitrary device-tree at any time */
-extern char *of_fdt_get_string(struct boot_param_header *blob, u32 offset);
-extern void *of_fdt_get_property(struct boot_param_header *blob,
+extern char *of_fdt_get_string(const void *blob, u32 offset);
+extern void *of_fdt_get_property(const void *blob,
 				 unsigned long node,
 				 const char *name,
-				 unsigned long *size);
-extern int of_fdt_is_compatible(struct boot_param_header *blob,
+				 int *size);
+extern int of_fdt_is_compatible(const void *blob,
 				unsigned long node,
 				const char *compat);
-extern int of_fdt_match(struct boot_param_header *blob, unsigned long node,
+extern int of_fdt_match(const void *blob, unsigned long node,
 			const char *const *compat);
 extern void of_fdt_unflatten_tree(unsigned long *blob,
 			       struct device_node **mynodes);
@@ -78,21 +41,21 @@ extern void of_fdt_unflatten_tree(unsigned long *blob,
 /* TBD: Temporary export of fdt globals - remove when code fully merged */
 extern int __initdata dt_root_addr_cells;
 extern int __initdata dt_root_size_cells;
-extern struct boot_param_header *initial_boot_params;
+extern void *initial_boot_params;
+
+extern char __dtb_start[];
+extern char __dtb_end[];
 
 /* For scanning the flat device-tree at boot time */
-extern char *find_flat_dt_string(u32 offset);
 extern int of_scan_flat_dt(int (*it)(unsigned long node, const char *uname,
 				     int depth, void *data),
 			   void *data);
-extern void *of_get_flat_dt_prop(unsigned long node, const char *name,
-				 unsigned long *size);
+extern const void *of_get_flat_dt_prop(unsigned long node, const char *name,
+				       int *size);
 extern int of_flat_dt_is_compatible(unsigned long node, const char *name);
 extern int of_flat_dt_match(unsigned long node, const char *const *matches);
 extern unsigned long of_get_flat_dt_root(void);
-extern int of_scan_flat_dt_by_path(const char *path,
-	int (*it)(unsigned long node, const char *name, int depth, void *data),
-	void *data);
+extern int of_get_flat_dt_size(void);
 
 extern int early_init_dt_scan_chosen(unsigned long node, const char *uname,
 				     int depth, void *data);
@@ -103,7 +66,7 @@ extern void early_init_dt_add_memory_arch(u64 base, u64 size);
 extern int early_init_dt_reserve_memory_arch(phys_addr_t base, phys_addr_t size,
 					     bool no_map);
 extern void * early_init_dt_alloc_memory_arch(u64 size, u64 align);
-extern u64 dt_mem_next_cell(int s, __be32 **cellp);
+extern u64 dt_mem_next_cell(int s, const __be32 **cellp);
 
 /* Early flat tree scan hooks */
 extern int early_init_dt_scan_root(unsigned long node, const char *uname,
@@ -120,6 +83,7 @@ extern void unflatten_device_tree(void);
 extern void unflatten_and_copy_device_tree(void);
 extern void early_init_devtree(void *);
 extern void early_get_first_memblock_info(void *, phys_addr_t *);
+extern u64 fdt_translate_address(const void *blob, int node_offset);
 #else /* CONFIG_OF_FLATTREE */
 static inline void early_init_fdt_scan_reserved_mem(void) {}
 static inline const char *of_flat_dt_get_machine_name(void) { return NULL; }
diff --git a/include/linux/of_irq.h b/include/linux/of_irq.h
index 6404253d810..bfec136a6d1 100644
--- a/include/linux/of_irq.h
+++ b/include/linux/of_irq.h
@@ -45,6 +45,7 @@ extern void of_irq_init(const struct of_device_id *matches);
 #ifdef CONFIG_OF_IRQ
 extern int of_irq_count(struct device_node *dev);
 extern int of_irq_get(struct device_node *dev, int index);
+extern int of_irq_get_byname(struct device_node *dev, const char *name);
 #else
 static inline int of_irq_count(struct device_node *dev)
 {
@@ -54,6 +55,10 @@ static inline int of_irq_get(struct device_node *dev, int index)
 {
 	return 0;
 }
+static inline int of_irq_get_byname(struct device_node *dev, const char *name)
+{
+	return 0;
+}
 #endif
 
 #if defined(CONFIG_OF)
diff --git a/include/linux/of_pci.h b/include/linux/of_pci.h
index 1a1f5ffd528..dde3a4a0fa5 100644
--- a/include/linux/of_pci.h
+++ b/include/linux/of_pci.h
@@ -6,14 +6,44 @@
 
 struct pci_dev;
 struct of_phandle_args;
-int of_irq_parse_pci(const struct pci_dev *pdev, struct of_phandle_args *out_irq);
-int of_irq_parse_and_map_pci(const struct pci_dev *dev, u8 slot, u8 pin);
-
 struct device_node;
+
+#ifdef CONFIG_OF
+int of_irq_parse_pci(const struct pci_dev *pdev, struct of_phandle_args *out_irq);
 struct device_node *of_pci_find_child_device(struct device_node *parent,
 					     unsigned int devfn);
 int of_pci_get_devfn(struct device_node *np);
+int of_irq_parse_and_map_pci(const struct pci_dev *dev, u8 slot, u8 pin);
 int of_pci_parse_bus_range(struct device_node *node, struct resource *res);
+#else
+static inline int of_irq_parse_pci(const struct pci_dev *pdev, struct of_phandle_args *out_irq)
+{
+	return 0;
+}
+
+static inline struct device_node *of_pci_find_child_device(struct device_node *parent,
+					     unsigned int devfn)
+{
+	return NULL;
+}
+
+static inline int of_pci_get_devfn(struct device_node *np)
+{
+	return -EINVAL;
+}
+
+static inline int
+of_irq_parse_and_map_pci(const struct pci_dev *dev, u8 slot, u8 pin)
+{
+	return 0;
+}
+
+static inline int
+of_pci_parse_bus_range(struct device_node *node, struct resource *res)
+{
+	return -EINVAL;
+}
+#endif
 
 #if defined(CONFIG_OF) && defined(CONFIG_PCI_MSI)
 int of_pci_msi_chip_add(struct msi_chip *chip);
diff --git a/include/linux/of_reserved_mem.h b/include/linux/of_reserved_mem.h
index 9b1fbb7f29f..4669ddfdd5a 100644
--- a/include/linux/of_reserved_mem.h
+++ b/include/linux/of_reserved_mem.h
@@ -21,33 +21,19 @@ struct reserved_mem_ops {
 				  struct device *dev);
 };
 
-typedef int (*reservedmem_of_init_fn)(struct reserved_mem *rmem,
-				      unsigned long node, const char *uname);
+typedef int (*reservedmem_of_init_fn)(struct reserved_mem *rmem);
+
+#define RESERVEDMEM_OF_DECLARE(name, compat, init)			\
+	_OF_DECLARE(reservedmem, name, compat, init, reservedmem_of_init_fn)
 
 #ifdef CONFIG_OF_RESERVED_MEM
 void fdt_init_reserved_mem(void);
 void fdt_reserved_mem_save_node(unsigned long node, const char *uname,
 			       phys_addr_t base, phys_addr_t size);
-
-#define RESERVEDMEM_OF_DECLARE(name, compat, init)			\
-	static const struct of_device_id __reservedmem_of_table_##name	\
-		__used __section(__reservedmem_of_table)		\
-		 = { .compatible = compat,				\
-		     .data = (init == (reservedmem_of_init_fn)NULL) ?	\
-				init : init }
-
 #else
 static inline void fdt_init_reserved_mem(void) { }
 static inline void fdt_reserved_mem_save_node(unsigned long node,
 		const char *uname, phys_addr_t base, phys_addr_t size) { }
-
-#define RESERVEDMEM_OF_DECLARE(name, compat, init)			\
-	static const struct of_device_id __reservedmem_of_table_##name	\
-		__attribute__((unused))					\
-		 = { .compatible = compat,				\
-		     .data = (init == (reservedmem_of_init_fn)NULL) ?	\
-				init : init }
-
 #endif
 
 #endif /* __OF_RESERVED_MEM_H */
diff --git a/include/linux/serial_core.h b/include/linux/serial_core.h
index 7a15b5b24c0..5bbb809ee19 100644
--- a/include/linux/serial_core.h
+++ b/include/linux/serial_core.h
@@ -294,6 +294,9 @@ struct earlycon_device {
 int setup_earlycon(char *buf, const char *match,
 		   int (*setup)(struct earlycon_device *, const char *));
 
+extern int of_setup_earlycon(unsigned long addr,
+			     int (*setup)(struct earlycon_device *, const char *));
+
 #define EARLYCON_DECLARE(name, func) \
 static int __init name ## _setup_earlycon(char *buf) \
 { \
@@ -301,6 +304,9 @@ static int __init name ## _setup_earlycon(char *buf) \
 } \
 early_param("earlycon", name ## _setup_earlycon);
 
+#define OF_EARLYCON_DECLARE(name, compat, fn)				\
+	_OF_DECLARE(earlycon, name, compat, fn, void *)
+
 struct uart_port *uart_get_console(struct uart_port *ports, int nr,
 				   struct console *c);
 void uart_parse_options(char *options, int *baud, int *parity, int *bits,
diff --git a/include/linux/string.h b/include/linux/string.h
index ac889c5ea11..d36977e029a 100644
--- a/include/linux/string.h
+++ b/include/linux/string.h
@@ -52,6 +52,9 @@ extern int strncasecmp(const char *s1, const char *s2, size_t n);
 #ifndef __HAVE_ARCH_STRCHR
 extern char * strchr(const char *,int);
 #endif
+#ifndef __HAVE_ARCH_STRCHRNUL
+extern char * strchrnul(const char *,int);
+#endif
 #ifndef __HAVE_ARCH_STRNCHR
 extern char * strnchr(const char *, size_t, int);
 #endif