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author | Arnd Bergmann <arnd@arndb.de> | 2011-11-01 02:25:41 +0400 |
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committer | Arnd Bergmann <arnd@arndb.de> | 2011-11-01 02:25:41 +0400 |
commit | 3e965b176341b78620f7404fd8b7f9a0d061f8a2 (patch) | |
tree | a2dbf06d6ae20fbe417b70f0a471cc4f93ff0a71 /arch/arm/mach-ixp2000/include/mach/gpio-ixp2000.h | |
parent | 034ee299122c6b145d6d3cafb9ef5c329a4ab990 (diff) | |
parent | 5839fec9d8db35b2b07359b18a77295418e239ad (diff) | |
download | linux-3e965b176341b78620f7404fd8b7f9a0d061f8a2.tar.xz |
Merge branch 'next/fixes' into next/cleanup
Conflicts:
arch/arm/mach-mxs/include/mach/gpio.h
arch/arm/plat-mxc/include/mach/gpio.h
drivers/video/omap/lcd_apollon.c
drivers/video/omap/lcd_ldp.c
drivers/video/omap/lcd_overo.c
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 000000000000..af836c76c3f1 --- /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_ */ |