diff options
author | Russell King <rmk@dyn-67.arm.linux.org.uk> | 2008-08-05 16:14:15 +0100 |
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committer | Russell King <rmk+kernel@arm.linux.org.uk> | 2008-08-07 09:55:48 +0100 |
commit | a09e64fbc0094e3073dbb09c3b4bfe4ab669244b (patch) | |
tree | 69689f467179891b498bd7423fcf61925173db31 /arch/arm/mach-ixp2000/include/mach/gpio.h | |
parent | a1b81a84fff05dbfef45b7012c26e1fee9973e5d (diff) |
[ARM] Move include/asm-arm/arch-* to arch/arm/*/include/mach
This just leaves include/asm-arm/plat-* to deal with.
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
Diffstat (limited to 'arch/arm/mach-ixp2000/include/mach/gpio.h')
-rw-r--r-- | arch/arm/mach-ixp2000/include/mach/gpio.h | 48 |
1 files changed, 48 insertions, 0 deletions
diff --git a/arch/arm/mach-ixp2000/include/mach/gpio.h b/arch/arm/mach-ixp2000/include/mach/gpio.h new file mode 100644 index 00000000000..4a88d2c33da --- /dev/null +++ b/arch/arm/mach-ixp2000/include/mach/gpio.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_ */ |