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-rw-r--r--arch/alpha/include/asm/gpio.h59
-rw-r--r--arch/arm/Kconfig1
-rw-r--r--arch/avr32/Kconfig1
-rw-r--r--arch/blackfin/Kconfig1
-rw-r--r--arch/ia64/include/asm/gpio.h59
-rw-r--r--arch/m68k/Kconfig.cpu1
-rw-r--r--arch/microblaze/include/asm/gpio.h57
-rw-r--r--arch/mips/Kconfig1
-rw-r--r--arch/openrisc/include/asm/gpio.h69
-rw-r--r--arch/powerpc/include/asm/gpio.h57
-rw-r--r--arch/sh/Kconfig1
-rw-r--r--arch/sparc/include/asm/gpio.h40
-rw-r--r--arch/unicore32/Kconfig1
-rw-r--r--arch/x86/include/asm/gpio.h57
-rw-r--r--arch/xtensa/include/asm/gpio.h60
-rw-r--r--drivers/gpio/Kconfig8
-rw-r--r--include/linux/gpio.h34
17 files changed, 81 insertions, 426 deletions
diff --git a/arch/alpha/include/asm/gpio.h b/arch/alpha/include/asm/gpio.h
index 7dc6a6343c06..b3799d88ffcf 100644
--- a/arch/alpha/include/asm/gpio.h
+++ b/arch/alpha/include/asm/gpio.h
@@ -1,55 +1,4 @@
-/*
- * Generic GPIO API implementation for Alpha.
- *
- * A stright copy of that for PowerPC which was:
- *
- * Copyright (c) 2007-2008  MontaVista Software, Inc.
- *
- * Author: Anton Vorontsov <avorontsov@ru.mvista.com>
- *
- * This program is free software; you can redistribute it and/or modify
- * it under the terms of the GNU General Public License as published by
- * the Free Software Foundation; either version 2 of the License, or
- * (at your option) any later version.
- */
-
-#ifndef _ASM_ALPHA_GPIO_H
-#define _ASM_ALPHA_GPIO_H
-
-#include <linux/errno.h>
-#include <asm-generic/gpio.h>
-
-#ifdef CONFIG_GPIOLIB
-
-/*
- * We don't (yet) implement inlined/rapid versions for on-chip gpios.
- * Just call gpiolib.
- */
-static inline int gpio_get_value(unsigned int gpio)
-{
-	return __gpio_get_value(gpio);
-}
-
-static inline void gpio_set_value(unsigned int gpio, int value)
-{
-	__gpio_set_value(gpio, value);
-}
-
-static inline int gpio_cansleep(unsigned int gpio)
-{
-	return __gpio_cansleep(gpio);
-}
-
-static inline int gpio_to_irq(unsigned int gpio)
-{
-	return __gpio_to_irq(gpio);
-}
-
-static inline int irq_to_gpio(unsigned int irq)
-{
-	return -EINVAL;
-}
-
-#endif /* CONFIG_GPIOLIB */
-
-#endif /* _ASM_ALPHA_GPIO_H */
+#ifndef __LINUX_GPIO_H
+#warning Include linux/gpio.h instead of asm/gpio.h
+#include <linux/gpio.h>
+#endif
diff --git a/arch/arm/Kconfig b/arch/arm/Kconfig
index 36586dba6fa6..777025e773d9 100644
--- a/arch/arm/Kconfig
+++ b/arch/arm/Kconfig
@@ -1,6 +1,7 @@
 config ARM
 	bool
 	default y
+	select ARCH_HAVE_CUSTOM_GPIO_H
 	select HAVE_AOUT
 	select HAVE_DMA_API_DEBUG
 	select HAVE_IDE if PCI || ISA || PCMCIA
diff --git a/arch/avr32/Kconfig b/arch/avr32/Kconfig
index 3dea7231f637..859b2de4a624 100644
--- a/arch/avr32/Kconfig
+++ b/arch/avr32/Kconfig
@@ -11,6 +11,7 @@ config AVR32
 	select GENERIC_ATOMIC64
 	select HARDIRQS_SW_RESEND
 	select GENERIC_IRQ_SHOW
+	select ARCH_HAVE_CUSTOM_GPIO_H
 	select ARCH_HAVE_NMI_SAFE_CMPXCHG
 	help
 	  AVR32 is a high-performance 32-bit RISC microprocessor core,
diff --git a/arch/blackfin/Kconfig b/arch/blackfin/Kconfig
index 373a6902d8fa..bf3d80f9738b 100644
--- a/arch/blackfin/Kconfig
+++ b/arch/blackfin/Kconfig
@@ -31,6 +31,7 @@ config BLACKFIN
 	select HAVE_KERNEL_LZO if RAMKERNEL
 	select HAVE_OPROFILE
 	select HAVE_PERF_EVENTS
+	select ARCH_HAVE_CUSTOM_GPIO_H
 	select ARCH_WANT_OPTIONAL_GPIOLIB
 	select HAVE_GENERIC_HARDIRQS
 	select GENERIC_ATOMIC64
diff --git a/arch/ia64/include/asm/gpio.h b/arch/ia64/include/asm/gpio.h
index 590a20debc4e..b3799d88ffcf 100644
--- a/arch/ia64/include/asm/gpio.h
+++ b/arch/ia64/include/asm/gpio.h
@@ -1,55 +1,4 @@
-/*
- * Generic GPIO API implementation for IA-64.
- *
- * A stright copy of that for PowerPC which was:
- *
- * Copyright (c) 2007-2008  MontaVista Software, Inc.
- *
- * Author: Anton Vorontsov <avorontsov@ru.mvista.com>
- *
- * This program is free software; you can redistribute it and/or modify
- * it under the terms of the GNU General Public License as published by
- * the Free Software Foundation; either version 2 of the License, or
- * (at your option) any later version.
- */
-
-#ifndef _ASM_IA64_GPIO_H
-#define _ASM_IA64_GPIO_H
-
-#include <linux/errno.h>
-#include <asm-generic/gpio.h>
-
-#ifdef CONFIG_GPIOLIB
-
-/*
- * We don't (yet) implement inlined/rapid versions for on-chip gpios.
- * Just call gpiolib.
- */
-static inline int gpio_get_value(unsigned int gpio)
-{
-	return __gpio_get_value(gpio);
-}
-
-static inline void gpio_set_value(unsigned int gpio, int value)
-{
-	__gpio_set_value(gpio, value);
-}
-
-static inline int gpio_cansleep(unsigned int gpio)
-{
-	return __gpio_cansleep(gpio);
-}
-
-static inline int gpio_to_irq(unsigned int gpio)
-{
-	return __gpio_to_irq(gpio);
-}
-
-static inline int irq_to_gpio(unsigned int irq)
-{
-	return -EINVAL;
-}
-
-#endif /* CONFIG_GPIOLIB */
-
-#endif /* _ASM_IA64_GPIO_H */
+#ifndef __LINUX_GPIO_H
+#warning Include linux/gpio.h instead of asm/gpio.h
+#include <linux/gpio.h>
+#endif
diff --git a/arch/m68k/Kconfig.cpu b/arch/m68k/Kconfig.cpu
index 8a9c767125a4..8941af1d3ad2 100644
--- a/arch/m68k/Kconfig.cpu
+++ b/arch/m68k/Kconfig.cpu
@@ -24,6 +24,7 @@ config COLDFIRE
 	bool "Coldfire CPU family support"
 	select GENERIC_GPIO
 	select ARCH_REQUIRE_GPIOLIB
+	select ARCH_HAVE_CUSTOM_GPIO_H
 	select CPU_HAS_NO_BITFIELDS
 	select CPU_HAS_NO_MULDIV64
 	select GENERIC_CSUM
diff --git a/arch/microblaze/include/asm/gpio.h b/arch/microblaze/include/asm/gpio.h
index 2b2c18be71c6..b3799d88ffcf 100644
--- a/arch/microblaze/include/asm/gpio.h
+++ b/arch/microblaze/include/asm/gpio.h
@@ -1,53 +1,4 @@
-/*
- * Generic GPIO API implementation for PowerPC.
- *
- * Copyright (c) 2007-2008  MontaVista Software, Inc.
- *
- * Author: Anton Vorontsov <avorontsov@ru.mvista.com>
- *
- * This program is free software; you can redistribute it and/or modify
- * it under the terms of the GNU General Public License as published by
- * the Free Software Foundation; either version 2 of the License, or
- * (at your option) any later version.
- */
-
-#ifndef _ASM_MICROBLAZE_GPIO_H
-#define _ASM_MICROBLAZE_GPIO_H
-
-#include <linux/errno.h>
-#include <asm-generic/gpio.h>
-
-#ifdef CONFIG_GPIOLIB
-
-/*
- * We don't (yet) implement inlined/rapid versions for on-chip gpios.
- * Just call gpiolib.
- */
-static inline int gpio_get_value(unsigned int gpio)
-{
-	return __gpio_get_value(gpio);
-}
-
-static inline void gpio_set_value(unsigned int gpio, int value)
-{
-	__gpio_set_value(gpio, value);
-}
-
-static inline int gpio_cansleep(unsigned int gpio)
-{
-	return __gpio_cansleep(gpio);
-}
-
-static inline int gpio_to_irq(unsigned int gpio)
-{
-	return __gpio_to_irq(gpio);
-}
-
-static inline int irq_to_gpio(unsigned int irq)
-{
-	return -EINVAL;
-}
-
-#endif /* CONFIG_GPIOLIB */
-
-#endif /* _ASM_MICROBLAZE_GPIO_H */
+#ifndef __LINUX_GPIO_H
+#warning Include linux/gpio.h instead of asm/gpio.h
+#include <linux/gpio.h>
+#endif
diff --git a/arch/mips/Kconfig b/arch/mips/Kconfig
index ce30e2f91d77..63321b283fe4 100644
--- a/arch/mips/Kconfig
+++ b/arch/mips/Kconfig
@@ -8,6 +8,7 @@ config MIPS
 	select HAVE_PERF_EVENTS
 	select PERF_USE_VMALLOC
 	select HAVE_ARCH_KGDB
+	select ARCH_HAVE_CUSTOM_GPIO_H
 	select HAVE_FUNCTION_TRACER
 	select HAVE_FUNCTION_TRACE_MCOUNT_TEST
 	select HAVE_DYNAMIC_FTRACE
diff --git a/arch/openrisc/include/asm/gpio.h b/arch/openrisc/include/asm/gpio.h
index 0b0d174f47cd..b3799d88ffcf 100644
--- a/arch/openrisc/include/asm/gpio.h
+++ b/arch/openrisc/include/asm/gpio.h
@@ -1,65 +1,4 @@
-/*
- * OpenRISC Linux
- *
- * Linux architectural port borrowing liberally from similar works of
- * others.  All original copyrights apply as per the original source
- * declaration.
- *
- * OpenRISC implementation:
- * Copyright (C) 2003 Matjaz Breskvar <phoenix@bsemi.com>
- * Copyright (C) 2010-2011 Jonas Bonn <jonas@southpole.se>
- * et al.
- *
- * This program is free software; you can redistribute it and/or modify
- * it under the terms of the GNU General Public License as published by
- * the Free Software Foundation; either version 2 of the License, or
- * (at your option) any later version.
- */
-
-#ifndef __ASM_OPENRISC_GPIO_H
-#define __ASM_OPENRISC_GPIO_H
-
-#include <linux/errno.h>
-#include <asm-generic/gpio.h>
-
-#ifdef CONFIG_GPIOLIB
-
-/*
- * OpenRISC (or1k) does not have on-chip GPIO's so there is not really
- * any standardized implementation that makes sense here.  If passing
- * through gpiolib becomes a bottleneck then it may make sense, on a
- * case-by-case basis, to implement these inlined/rapid versions.
- *
- * Just call gpiolib.
- */
-static inline int gpio_get_value(unsigned int gpio)
-{
-	return __gpio_get_value(gpio);
-}
-
-static inline void gpio_set_value(unsigned int gpio, int value)
-{
-	__gpio_set_value(gpio, value);
-}
-
-static inline int gpio_cansleep(unsigned int gpio)
-{
-	return __gpio_cansleep(gpio);
-}
-
-/*
- * Not implemented, yet.
- */
-static inline int gpio_to_irq(unsigned int gpio)
-{
-	return -ENOSYS;
-}
-
-static inline int irq_to_gpio(unsigned int irq)
-{
-	return -EINVAL;
-}
-
-#endif /* CONFIG_GPIOLIB */
-
-#endif /* __ASM_OPENRISC_GPIO_H */
+#ifndef __LINUX_GPIO_H
+#warning Include linux/gpio.h instead of asm/gpio.h
+#include <linux/gpio.h>
+#endif
diff --git a/arch/powerpc/include/asm/gpio.h b/arch/powerpc/include/asm/gpio.h
index 38762edb5e58..b3799d88ffcf 100644
--- a/arch/powerpc/include/asm/gpio.h
+++ b/arch/powerpc/include/asm/gpio.h
@@ -1,53 +1,4 @@
-/*
- * Generic GPIO API implementation for PowerPC.
- *
- * Copyright (c) 2007-2008  MontaVista Software, Inc.
- *
- * Author: Anton Vorontsov <avorontsov@ru.mvista.com>
- *
- * This program is free software; you can redistribute it and/or modify
- * it under the terms of the GNU General Public License as published by
- * the Free Software Foundation; either version 2 of the License, or
- * (at your option) any later version.
- */
-
-#ifndef __ASM_POWERPC_GPIO_H
-#define __ASM_POWERPC_GPIO_H
-
-#include <linux/errno.h>
-#include <asm-generic/gpio.h>
-
-#ifdef CONFIG_GPIOLIB
-
-/*
- * We don't (yet) implement inlined/rapid versions for on-chip gpios.
- * Just call gpiolib.
- */
-static inline int gpio_get_value(unsigned int gpio)
-{
-	return __gpio_get_value(gpio);
-}
-
-static inline void gpio_set_value(unsigned int gpio, int value)
-{
-	__gpio_set_value(gpio, value);
-}
-
-static inline int gpio_cansleep(unsigned int gpio)
-{
-	return __gpio_cansleep(gpio);
-}
-
-static inline int gpio_to_irq(unsigned int gpio)
-{
-	return __gpio_to_irq(gpio);
-}
-
-static inline int irq_to_gpio(unsigned int irq)
-{
-	return -EINVAL;
-}
-
-#endif /* CONFIG_GPIOLIB */
-
-#endif /* __ASM_POWERPC_GPIO_H */
+#ifndef __LINUX_GPIO_H
+#warning Include linux/gpio.h instead of asm/gpio.h
+#include <linux/gpio.h>
+#endif
diff --git a/arch/sh/Kconfig b/arch/sh/Kconfig
index ff9e033ce626..c40b29ac3644 100644
--- a/arch/sh/Kconfig
+++ b/arch/sh/Kconfig
@@ -13,6 +13,7 @@ config SUPERH
 	select HAVE_DMA_ATTRS
 	select HAVE_IRQ_WORK
 	select HAVE_PERF_EVENTS
+	select ARCH_HAVE_CUSTOM_GPIO_H
 	select ARCH_HAVE_NMI_SAFE_CMPXCHG if (GUSA_RB || CPU_SH4A)
 	select PERF_USE_VMALLOC
 	select HAVE_KERNEL_GZIP
diff --git a/arch/sparc/include/asm/gpio.h b/arch/sparc/include/asm/gpio.h
index a0e3ac0af599..b3799d88ffcf 100644
--- a/arch/sparc/include/asm/gpio.h
+++ b/arch/sparc/include/asm/gpio.h
@@ -1,36 +1,4 @@
-#ifndef __ASM_SPARC_GPIO_H
-#define __ASM_SPARC_GPIO_H
-
-#include <linux/errno.h>
-#include <asm-generic/gpio.h>
-
-#ifdef CONFIG_GPIOLIB
-
-static inline int gpio_get_value(unsigned int gpio)
-{
-	return __gpio_get_value(gpio);
-}
-
-static inline void gpio_set_value(unsigned int gpio, int value)
-{
-	__gpio_set_value(gpio, value);
-}
-
-static inline int gpio_cansleep(unsigned int gpio)
-{
-	return __gpio_cansleep(gpio);
-}
-
-static inline int gpio_to_irq(unsigned int gpio)
-{
-	return -ENOSYS;
-}
-
-static inline int irq_to_gpio(unsigned int irq)
-{
-	return -EINVAL;
-}
-
-#endif /* CONFIG_GPIOLIB */
-
-#endif /* __ASM_SPARC_GPIO_H */
+#ifndef __LINUX_GPIO_H
+#warning Include linux/gpio.h instead of asm/gpio.h
+#include <linux/gpio.h>
+#endif
diff --git a/arch/unicore32/Kconfig b/arch/unicore32/Kconfig
index eeb8054c7cd8..7ff6d10c0be2 100644
--- a/arch/unicore32/Kconfig
+++ b/arch/unicore32/Kconfig
@@ -8,6 +8,7 @@ config UNICORE32
 	select HAVE_KERNEL_BZIP2
 	select HAVE_KERNEL_LZO
 	select HAVE_KERNEL_LZMA
+	select ARCH_HAVE_CUSTOM_GPIO_H
 	select GENERIC_FIND_FIRST_BIT
 	select GENERIC_IRQ_PROBE
 	select GENERIC_IRQ_SHOW
diff --git a/arch/x86/include/asm/gpio.h b/arch/x86/include/asm/gpio.h
index 91d915a65259..b3799d88ffcf 100644
--- a/arch/x86/include/asm/gpio.h
+++ b/arch/x86/include/asm/gpio.h
@@ -1,53 +1,4 @@
-/*
- * Generic GPIO API implementation for x86.
- *
- * Derived from the generic GPIO API for powerpc:
- *
- * Copyright (c) 2007-2008  MontaVista Software, Inc.
- *
- * Author: Anton Vorontsov <avorontsov@ru.mvista.com>
- *
- * This program is free software; you can redistribute it and/or modify
- * it under the terms of the GNU General Public License as published by
- * the Free Software Foundation; either version 2 of the License, or
- * (at your option) any later version.
- */
-
-#ifndef _ASM_X86_GPIO_H
-#define _ASM_X86_GPIO_H
-
-#include <asm-generic/gpio.h>
-
-#ifdef CONFIG_GPIOLIB
-
-/*
- * Just call gpiolib.
- */
-static inline int gpio_get_value(unsigned int gpio)
-{
-	return __gpio_get_value(gpio);
-}
-
-static inline void gpio_set_value(unsigned int gpio, int value)
-{
-	__gpio_set_value(gpio, value);
-}
-
-static inline int gpio_cansleep(unsigned int gpio)
-{
-	return __gpio_cansleep(gpio);
-}
-
-static inline int gpio_to_irq(unsigned int gpio)
-{
-	return __gpio_to_irq(gpio);
-}
-
-static inline int irq_to_gpio(unsigned int irq)
-{
-	return -EINVAL;
-}
-
-#endif /* CONFIG_GPIOLIB */
-
-#endif /* _ASM_X86_GPIO_H */
+#ifndef __LINUX_GPIO_H
+#warning Include linux/gpio.h instead of asm/gpio.h
+#include <linux/gpio.h>
+#endif
diff --git a/arch/xtensa/include/asm/gpio.h b/arch/xtensa/include/asm/gpio.h
index a8c9fc46c790..b3799d88ffcf 100644
--- a/arch/xtensa/include/asm/gpio.h
+++ b/arch/xtensa/include/asm/gpio.h
@@ -1,56 +1,4 @@
-/*
- * Generic GPIO API implementation for xtensa.
- *
- * Stolen from x86, which is derived from the generic GPIO API for powerpc:
- *
- * Copyright (c) 2007-2008  MontaVista Software, Inc.
- *
- * Author: Anton Vorontsov <avorontsov@ru.mvista.com>
- *
- * This program is free software; you can redistribute it and/or modify
- * it under the terms of the GNU General Public License as published by
- * the Free Software Foundation; either version 2 of the License, or
- * (at your option) any later version.
- */
-
-#ifndef _ASM_XTENSA_GPIO_H
-#define _ASM_XTENSA_GPIO_H
-
-#include <asm-generic/gpio.h>
-
-#ifdef CONFIG_GPIOLIB
-
-/*
- * Just call gpiolib.
- */
-static inline int gpio_get_value(unsigned int gpio)
-{
-	return __gpio_get_value(gpio);
-}
-
-static inline void gpio_set_value(unsigned int gpio, int value)
-{
-	__gpio_set_value(gpio, value);
-}
-
-static inline int gpio_cansleep(unsigned int gpio)
-{
-	return __gpio_cansleep(gpio);
-}
-
-static inline int gpio_to_irq(unsigned int gpio)
-{
-	return __gpio_to_irq(gpio);
-}
-
-/*
- * Not implemented, yet.
- */
-static inline int irq_to_gpio(unsigned int irq)
-{
-	return -EINVAL;
-}
-
-#endif /* CONFIG_GPIOLIB */
-
-#endif /* _ASM_XTENSA_GPIO_H */
+#ifndef __LINUX_GPIO_H
+#warning Include linux/gpio.h instead of asm/gpio.h
+#include <linux/gpio.h>
+#endif
diff --git a/drivers/gpio/Kconfig b/drivers/gpio/Kconfig
index 5169a99e9f61..25535ebf4f90 100644
--- a/drivers/gpio/Kconfig
+++ b/drivers/gpio/Kconfig
@@ -2,6 +2,14 @@
 # GPIO infrastructure and drivers
 #
 
+config ARCH_HAVE_CUSTOM_GPIO_H
+	bool
+	help
+	  Selecting this config option from the architecture Kconfig allows
+	  the architecture to provide a custom asm/gpio.h implementation
+	  overriding the default implementations.  New uses of this are
+	  strongly discouraged.
+
 config ARCH_WANT_OPTIONAL_GPIOLIB
 	bool
 	help
diff --git a/include/linux/gpio.h b/include/linux/gpio.h
index d1890d46b6ce..7a8816a1a0d8 100644
--- a/include/linux/gpio.h
+++ b/include/linux/gpio.h
@@ -1,6 +1,8 @@
 #ifndef __LINUX_GPIO_H
 #define __LINUX_GPIO_H
 
+#include <linux/errno.h>
+
 /* see Documentation/gpio.txt */
 
 /* make these flag values available regardless of GPIO kconfig options */
@@ -38,7 +40,39 @@ struct gpio {
 };
 
 #ifdef CONFIG_GENERIC_GPIO
+
+#ifdef CONFIG_ARCH_HAVE_CUSTOM_GPIO_H
 #include <asm/gpio.h>
+#else
+
+#include <asm-generic/gpio.h>
+
+static inline int gpio_get_value(unsigned int gpio)
+{
+	return __gpio_get_value(gpio);
+}
+
+static inline void gpio_set_value(unsigned int gpio, int value)
+{
+	__gpio_set_value(gpio, value);
+}
+
+static inline int gpio_cansleep(unsigned int gpio)
+{
+	return __gpio_cansleep(gpio);
+}
+
+static inline int gpio_to_irq(unsigned int gpio)
+{
+	return __gpio_to_irq(gpio);
+}
+
+static inline int irq_to_gpio(unsigned int irq)
+{
+	return -EINVAL;
+}
+
+#endif
 
 #else