asm-generic: Add default clkdev.h

Ease the deployment of clkdev by providing a default asm/clkdev.h for
use if the arch does not have an include/asm/clkdev.h.

Due to limitations in Kbuild we manually add clkdev.h to all
architectures that don't have one rather than having the header appear
by default.

Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
Reviewed-by: Stephen Rothwell <sfr@canb.auug.org.au>
Signed-off-by: Arnd Bergmann <arnd@arndb.de>

arch/alpha/include/asm/Kbuild

@@ -1,5 +1,7 @@
 include include/asm-generic/Kbuild.asm
 
+generic-y += clkdev.h
+
 header-y += compiler.h
 header-y += console.h
 header-y += fpu.h

arch/avr32/include/asm/Kbuild

@@ -1,3 +1,5 @@
 include include/asm-generic/Kbuild.asm
 
+generic-y	+= clkdev.h
+
 header-y	+= cachectl.h

arch/cris/include/asm/Kbuild

@@ -7,3 +7,5 @@ header-y += ethernet.h
 header-y += etraxgpio.h
 header-y += rs485.h
 header-y += sync_serial.h
+
+generic-y += clkdev.h

arch/frv/include/asm/Kbuild

@@ -2,3 +2,4 @@ include include/asm-generic/Kbuild.asm
 
 header-y += registers.h
 header-y += termios.h
+generic-y += clkdev.h

arch/h8300/include/asm/Kbuild

@@ -1 +1,3 @@
 include include/asm-generic/Kbuild.asm
+
+generic-y	+= clkdev.h

arch/hexagon/include/asm/Kbuild

@@ -7,6 +7,7 @@ header-y += user.h
 generic-y += auxvec.h
 generic-y += bug.h
 generic-y += bugs.h
+generic-y += clkdev.h
 generic-y += cputime.h
 generic-y += current.h
 generic-y += device.h

arch/ia64/include/asm/Kbuild

@@ -13,3 +13,4 @@ header-y += ptrace_offsets.h
 header-y += rse.h
 header-y += ucontext.h
 header-y += ustack.h
+generic-y += clkdev.h

arch/m32r/include/asm/Kbuild

@@ -1 +1,3 @@
 include include/asm-generic/Kbuild.asm
+
+generic-y	+= clkdev.h

arch/m68k/include/asm/Kbuild

@@ -2,6 +2,7 @@ include include/asm-generic/Kbuild.asm
 header-y += cachectl.h
 
 generic-y += bitsperlong.h
+generic-y += clkdev.h
 generic-y += cputime.h
 generic-y += device.h
 generic-y += emergency-restart.h

arch/microblaze/include/asm/Kbuild

@@ -1,3 +1,4 @@
 include include/asm-generic/Kbuild.asm
 
 header-y  += elf.h
+generic-y += clkdev.h

arch/mn10300/include/asm/Kbuild

@@ -1 +1,3 @@
 include include/asm-generic/Kbuild.asm
+
+generic-y += clkdev.h

arch/openrisc/include/asm/Kbuild

@@ -11,6 +11,7 @@ generic-y += bug.h
 generic-y += bugs.h
 generic-y += cacheflush.h
 generic-y += checksum.h
+generic-y += clkdev.h
 generic-y += cmpxchg.h
 generic-y += cmpxchg-local.h
 generic-y += cputime.h

arch/parisc/include/asm/Kbuild

@@ -1,4 +1,5 @@
 include include/asm-generic/Kbuild.asm
 
 header-y += pdc.h
+generic-y += clkdev.h
 generic-y += word-at-a-time.h

arch/powerpc/include/asm/Kbuild

@@ -35,4 +35,5 @@ header-y += types.h
 header-y += ucontext.h
 header-y += unistd.h
 
+generic-y += clkdev.h
 generic-y += rwsem.h

arch/s390/include/asm/Kbuild

@@ -13,3 +13,5 @@ header-y += tape390.h
 header-y += ucontext.h
 header-y += vtoc.h
 header-y += zcrypt.h
+
+generic-y += clkdev.h

arch/score/include/asm/Kbuild

@@ -1,3 +1,5 @@
 include include/asm-generic/Kbuild.asm
 
 header-y +=
+
+generic-y += clkdev.h

arch/sparc/include/asm/Kbuild

@@ -17,6 +17,7 @@ header-y += uctx.h
 header-y += utrap.h
 header-y += watchdog.h
 
+generic-y += clkdev.h
 generic-y += div64.h
 generic-y += local64.h
 generic-y += irq_regs.h

arch/tile/include/asm/Kbuild

@@ -8,6 +8,7 @@ header-y += hardwall.h
 
 generic-y += bug.h
 generic-y += bugs.h
+generic-y += clkdev.h
 generic-y += cputime.h
 generic-y += div64.h
 generic-y += emergency-restart.h

arch/um/include/asm/Kbuild

@@ -1,4 +1,4 @@
 generic-y += bug.h cputime.h device.h emergency-restart.h futex.h hardirq.h
 generic-y += hw_irq.h irq_regs.h kdebug.h percpu.h sections.h topology.h xor.h
 generic-y += ftrace.h pci.h io.h param.h delay.h mutex.h current.h exec.h
-generic-y += switch_to.h
+generic-y += switch_to.h clkdev.h

arch/unicore32/include/asm/Kbuild

@@ -4,6 +4,7 @@ generic-y += atomic.h
 generic-y += auxvec.h
 generic-y += bitsperlong.h
 generic-y += bugs.h
+generic-y += clkdev.h
 generic-y += cputime.h
 generic-y += current.h
 generic-y += device.h

arch/x86/include/asm/Kbuild

@@ -26,3 +26,5 @@ header-y += vsyscall.h
 genhdr-y += unistd_32.h
 genhdr-y += unistd_64.h
 genhdr-y += unistd_x32.h
+
+generic-y += clkdev.h

arch/xtensa/include/asm/Kbuild

@@ -1 +1,3 @@
 include include/asm-generic/Kbuild.asm
+
+generic-y += clkdev.h

include/asm-generic/clkdev.h

@@ -0,0 +1,28 @@
+/*
+ *  include/asm-generic/clkdev.h
+ *
+ * Based on the ARM clkdev.h:
+ *  Copyright (C) 2008 Russell King.
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License version 2 as
+ * published by the Free Software Foundation.
+ *
+ * Helper for the clk API to assist looking up a struct clk.
+ */
+#ifndef __ASM_CLKDEV_H
+#define __ASM_CLKDEV_H
+
+#include <linux/slab.h>
+
+struct clk;
+
+static inline int __clk_get(struct clk *clk) { return 1; }
+static inline void __clk_put(struct clk *clk) { }
+
+static inline struct clk_lookup_alloc *__clkdev_alloc(size_t size)
+{
+	return kzalloc(size, GFP_KERNEL);
+}
+
+#endif