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author | Srikant Patnaik | 2015-01-11 12:28:04 +0530 |
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committer | Srikant Patnaik | 2015-01-11 12:28:04 +0530 |
commit | 871480933a1c28f8a9fed4c4d34d06c439a7a422 (patch) | |
tree | 8718f573808810c2a1e8cb8fb6ac469093ca2784 /arch/arm/mach-ixp2000/include/mach/gpio-ixp2000.h | |
parent | 9d40ac5867b9aefe0722bc1f110b965ff294d30d (diff) | |
download | FOSSEE-netbook-kernel-source-871480933a1c28f8a9fed4c4d34d06c439a7a422.tar.gz FOSSEE-netbook-kernel-source-871480933a1c28f8a9fed4c4d34d06c439a7a422.tar.bz2 FOSSEE-netbook-kernel-source-871480933a1c28f8a9fed4c4d34d06c439a7a422.zip |
Moved, renamed, and deleted files
The original directory structure was scattered and unorganized.
Changes are basically to make it look like kernel structure.
Diffstat (limited to 'arch/arm/mach-ixp2000/include/mach/gpio-ixp2000.h')
-rw-r--r-- | arch/arm/mach-ixp2000/include/mach/gpio-ixp2000.h | 48 |
1 files changed, 48 insertions, 0 deletions
diff --git a/arch/arm/mach-ixp2000/include/mach/gpio-ixp2000.h b/arch/arm/mach-ixp2000/include/mach/gpio-ixp2000.h new file mode 100644 index 00000000..af836c76 --- /dev/null +++ b/arch/arm/mach-ixp2000/include/mach/gpio-ixp2000.h @@ -0,0 +1,48 @@ +/* + * arch/arm/mach-ixp2000/include/mach/gpio.h + * + * Copyright (C) 2002 Intel Corporation. + * + * 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. + */ + +/* + * IXP2000 GPIO in/out, edge/level detection for IRQs: + * IRQs are generated on Falling-edge, Rising-Edge, Level-low, Level-High + * or both Falling-edge and Rising-edge. + * This must be called *before* the corresponding IRQ is registerd. + * Use this instead of directly setting the GPIO registers. + * GPIOs may also be used as GPIOs (e.g. for emulating i2c/smb) + */ +#ifndef __ASM_ARCH_GPIO_H +#define __ASM_ARCH_GPIO_H + +#ifndef __ASSEMBLY__ + +#define GPIO_IN 0 +#define GPIO_OUT 1 + +#define IXP2000_GPIO_LOW 0 +#define IXP2000_GPIO_HIGH 1 + +extern void gpio_line_config(int line, int direction); + +static inline int gpio_line_get(int line) +{ + return (((*IXP2000_GPIO_PLR) >> line) & 1); +} + +static inline void gpio_line_set(int line, int value) +{ + if (value == IXP2000_GPIO_HIGH) { + ixp2000_reg_write(IXP2000_GPIO_POSR, 1 << line); + } else if (value == IXP2000_GPIO_LOW) { + ixp2000_reg_write(IXP2000_GPIO_POCR, 1 << line); + } +} + +#endif /* !__ASSEMBLY__ */ + +#endif /* ASM_ARCH_IXP2000_GPIO_H_ */ |