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| author | Gabor Juhos <juhosg@openwrt.org> | 2009-06-03 18:17:07 +0000 |
|---|---|---|
| committer | Gabor Juhos <juhosg@openwrt.org> | 2009-06-03 18:17:07 +0000 |
| commit | b0acbe709c65b56e3319e6a915d4d977134e1e0f (patch) | |
| tree | 2dc318a683c6822a0f2169856cb7575f28355b50 /target/linux | |
| parent | 5b72dc3d8fa5afce137474ff7ddeba4be6cad10e (diff) | |
| download | upstream-b0acbe709c65b56e3319e6a915d4d977134e1e0f.tar.gz upstream-b0acbe709c65b56e3319e6a915d4d977134e1e0f.tar.bz2 upstream-b0acbe709c65b56e3319e6a915d4d977134e1e0f.zip | |
add flash locking code
SVN-Revision: 16311
Diffstat (limited to 'target/linux')
| -rw-r--r-- | target/linux/ar71xx/files/arch/mips/ar71xx/ar71xx.c | 24 | ||||
| -rw-r--r-- | target/linux/ar71xx/files/arch/mips/include/asm/mach-ar71xx/ar71xx.h | 4 |
2 files changed, 27 insertions, 1 deletions
diff --git a/target/linux/ar71xx/files/arch/mips/ar71xx/ar71xx.c b/target/linux/ar71xx/files/arch/mips/ar71xx/ar71xx.c index f224e82c0c..ea7ae143bd 100644 --- a/target/linux/ar71xx/files/arch/mips/ar71xx/ar71xx.c +++ b/target/linux/ar71xx/files/arch/mips/ar71xx/ar71xx.c @@ -1,7 +1,7 @@ /* * AR71xx SoC routines * - * Copyright (C) 2008 Gabor Juhos <juhosg@openwrt.org> + * Copyright (C) 2008-2009 Gabor Juhos <juhosg@openwrt.org> * Copyright (C) 2008 Imre Kaloz <kaloz@openwrt.org> * * This program is free software; you can redistribute it and/or modify it @@ -12,9 +12,13 @@ #include <linux/kernel.h> #include <linux/module.h> #include <linux/types.h> +#include <linux/mutex.h> #include <asm/mach-ar71xx/ar71xx.h> +static DEFINE_MUTEX(ar71xx_flash_mutex); +static int ar71xx_flash_lock_enabled; + void __iomem *ar71xx_ddr_base; EXPORT_SYMBOL_GPL(ar71xx_ddr_base); @@ -98,3 +102,21 @@ void ar71xx_ddr_flush(u32 reg) } EXPORT_SYMBOL_GPL(ar71xx_ddr_flush); +void __init ar71xx_flash_lock_enable(void) +{ + ar71xx_flash_lock_enabled = 1; +} + +void ar71xx_flash_acquire(void) +{ + if (ar71xx_flash_lock_enabled) + mutex_lock(&ar71xx_flash_mutex); +} +EXPORT_SYMBOL_GPL(ar71xx_flash_acquire); + +void ar71xx_flash_release(void) +{ + if (ar71xx_flash_lock_enabled) + mutex_unlock(&ar71xx_flash_mutex); +} +EXPORT_SYMBOL_GPL(ar71xx_flash_release); diff --git a/target/linux/ar71xx/files/arch/mips/include/asm/mach-ar71xx/ar71xx.h b/target/linux/ar71xx/files/arch/mips/include/asm/mach-ar71xx/ar71xx.h index 86272789bd..19a546e56e 100644 --- a/target/linux/ar71xx/files/arch/mips/include/asm/mach-ar71xx/ar71xx.h +++ b/target/linux/ar71xx/files/arch/mips/include/asm/mach-ar71xx/ar71xx.h @@ -422,6 +422,10 @@ void ar71xx_device_start(u32 mask); #define SPI_IOC_CS2 SPI_IOC_CS(2) #define SPI_IOC_CS_ALL (SPI_IOC_CS0 | SPI_IOC_CS1 | SPI_IOC_CS2) +void ar71xx_flash_lock_enable(void) __init; +void ar71xx_flash_acquire(void); +void ar71xx_flash_release(void); + /* * MII_CTRL block */ |