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author | GuanXuetao <gxt@mprc.pku.edu.cn> | 2011-01-15 10:19:35 (GMT) |
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committer | GuanXuetao <gxt@mprc.pku.edu.cn> | 2011-03-17 01:19:10 (GMT) |
commit | 752bcb4d02ccfd5e7a8d810424154169b4cca8ae (patch) | |
tree | d435061fe9405f70d51aef55392062460515ca30 /arch/unicore32/include/asm/irqflags.h | |
parent | 02b2ee16cc31df2b23d6f6c68a597d947f6c10e8 (diff) | |
download | linux-fsl-qoriq-752bcb4d02ccfd5e7a8d810424154169b4cca8ae.tar.xz |
unicore32 core architecture: interrupts ang gpio handling
This patch implements interrupts and gpio handling.
UniCore32 has 9 gpio interrupt sources.
And gpio device operations are also here.
Signed-off-by: Guan Xuetao <gxt@mprc.pku.edu.cn>
Diffstat (limited to 'arch/unicore32/include/asm/irqflags.h')
-rw-r--r-- | arch/unicore32/include/asm/irqflags.h | 53 |
1 files changed, 53 insertions, 0 deletions
diff --git a/arch/unicore32/include/asm/irqflags.h b/arch/unicore32/include/asm/irqflags.h new file mode 100644 index 0000000..6d8a28d --- /dev/null +++ b/arch/unicore32/include/asm/irqflags.h @@ -0,0 +1,53 @@ +/* + * linux/arch/unicore32/include/asm/irqflags.h + * + * Code specific to PKUnity SoC and UniCore ISA + * + * Copyright (C) 2001-2010 GUAN Xue-tao + * + * 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. + */ +#ifndef __UNICORE_IRQFLAGS_H__ +#define __UNICORE_IRQFLAGS_H__ + +#ifdef __KERNEL__ + +#include <asm/ptrace.h> + +#define ARCH_IRQ_DISABLED (PRIV_MODE | PSR_I_BIT) +#define ARCH_IRQ_ENABLED (PRIV_MODE) + +/* + * Save the current interrupt enable state. + */ +static inline unsigned long arch_local_save_flags(void) +{ + unsigned long temp; + + asm volatile("mov %0, asr" : "=r" (temp) : : "memory", "cc"); + + return temp & PSR_c; +} + +/* + * restore saved IRQ state + */ +static inline void arch_local_irq_restore(unsigned long flags) +{ + unsigned long temp; + + asm volatile( + "mov %0, asr\n" + "mov.a asr, %1\n" + "mov.f asr, %0" + : "=&r" (temp) + : "r" (flags) + : "memory", "cc"); +} + +#include <asm-generic/irqflags.h> + +#endif +#endif |