diff --git a/arch/powerpc/lib/Makefile b/arch/powerpc/lib/Makefile index 4bb023f4c8690f332152eb00706f4f7cfa85f3e8..f1d2cdc5331b256e2b3c3133ff3e3196bf520f8e 100644 --- a/arch/powerpc/lib/Makefile +++ b/arch/powerpc/lib/Makefile @@ -23,3 +23,4 @@ obj-$(CONFIG_SMP) += locks.o endif obj-$(CONFIG_PPC_LIB_RHEAP) += rheap.o +obj-$(CONFIG_HAS_IOMEM) += devres.o diff --git a/arch/powerpc/lib/devres.c b/arch/powerpc/lib/devres.c new file mode 100644 index 0000000000000000000000000000000000000000..292115d98ea9663e4038efe9826262e7c97003e1 --- /dev/null +++ b/arch/powerpc/lib/devres.c @@ -0,0 +1,42 @@ +/* + * Copyright (C) 2008 Freescale Semiconductor, Inc. + * + * 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. + */ + +#include <linux/device.h> /* devres_*(), devm_ioremap_release() */ +#include <linux/io.h> /* ioremap_flags() */ +#include <linux/module.h> /* EXPORT_SYMBOL() */ + +/** + * devm_ioremap_prot - Managed ioremap_flags() + * @dev: Generic device to remap IO address for + * @offset: BUS offset to map + * @size: Size of map + * @flags: Page flags + * + * Managed ioremap_prot(). Map is automatically unmapped on driver + * detach. + */ +void __iomem *devm_ioremap_prot(struct device *dev, resource_size_t offset, + size_t size, unsigned long flags) +{ + void __iomem **ptr, *addr; + + ptr = devres_alloc(devm_ioremap_release, sizeof(*ptr), GFP_KERNEL); + if (!ptr) + return NULL; + + addr = ioremap_flags(offset, size, flags); + if (addr) { + *ptr = addr; + devres_add(dev, ptr); + } else + devres_free(ptr); + + return addr; +} +EXPORT_SYMBOL(devm_ioremap_prot); diff --git a/include/asm-powerpc/io.h b/include/asm-powerpc/io.h index afae0697e8ce441b60d219b17530391591fe0484..e0062d73db1c0bcaee98eafcc18a253d0048b33c 100644 --- a/include/asm-powerpc/io.h +++ b/include/asm-powerpc/io.h @@ -2,7 +2,7 @@ #define _ASM_POWERPC_IO_H #ifdef __KERNEL__ -/* +/* * 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 @@ -18,6 +18,9 @@ extern int check_legacy_ioport(unsigned long base_port); #define _PNPWRP 0xa79 #define PNPBIOS_BASE 0xf000 +#include <linux/device.h> +#include <linux/io.h> + #include <linux/compiler.h> #include <asm/page.h> #include <asm/byteorder.h> @@ -744,6 +747,9 @@ static inline void * bus_to_virt(unsigned long address) #define clrsetbits_8(addr, clear, set) clrsetbits(8, addr, clear, set) +void __iomem *devm_ioremap_prot(struct device *dev, resource_size_t offset, + size_t size, unsigned long flags); + #endif /* __KERNEL__ */ #endif /* _ASM_POWERPC_IO_H */ diff --git a/include/linux/io.h b/include/linux/io.h index 3a03a3604cce7e61e024c793739d227b5933176f..6c7f0ba0d5faf473b6c2ffb60d1a0c957c007059 100644 --- a/include/linux/io.h +++ b/include/linux/io.h @@ -65,5 +65,6 @@ void __iomem *devm_ioremap_nocache(struct device *dev, resource_size_t offset, void devm_iounmap(struct device *dev, void __iomem *addr); int check_signature(const volatile void __iomem *io_addr, const unsigned char *signature, int length); +void devm_ioremap_release(struct device *dev, void *res); #endif /* _LINUX_IO_H */ diff --git a/lib/devres.c b/lib/devres.c index 26c87c49d776cf8365e9ff7ba2a7319e481f716f..72c8909006da156a41c4a70a1de2562198b45103 100644 --- a/lib/devres.c +++ b/lib/devres.c @@ -2,7 +2,7 @@ #include <linux/io.h> #include <linux/module.h> -static void devm_ioremap_release(struct device *dev, void *res) +void devm_ioremap_release(struct device *dev, void *res) { iounmap(*(void __iomem **)res); }