projects / deliverable / linux.git / blame
| Commit | Line | Data |
|---|---|---|
| ec976d6e BD |
1 | /* arch/arm/mach-s3c2410/include/mach/gpio-fns.h |
| 2 | * | |
| ccae941e | 3 | * Copyright (c) 2003-2009 Simtec Electronics |
| ec976d6e BD |
4 | * Ben Dooks <ben@simtec.co.uk> |
| 5 | * | |
| 6 | * S3C2410 - hardware | |
| 7 | * | |
| 8 | * This program is free software; you can redistribute it and/or modify | |
| 9 | * it under the terms of the GNU General Public License version 2 as | |
| 10 | * published by the Free Software Foundation. | |
| 11 | */ | |
| 12 | ||
| eee2b94f BD |
13 | #ifndef __MACH_GPIO_FNS_H |
| 14 | #define __MACH_GPIO_FNS_H __FILE__ | |
| 15 | ||
| ec976d6e BD |
16 | /* These functions are in the to-be-removed category and it is strongly |
| 17 | * encouraged not to use these in new code. They will be marked deprecated | |
| 18 | * very soon. | |
| 19 | * | |
| 20 | * Most of the functionality can be either replaced by the gpiocfg calls | |
| 21 | * for the s3c platform or by the generic GPIOlib API. | |
| eee2b94f BD |
22 | * |
| 23 | * As of 2.6.35-rc, these will be removed, with the few drivers using them | |
| 24 | * either replaced or given a wrapper until the calls can be removed. | |
| ec976d6e BD |
25 | */ |
| 26 | ||
| eee2b94f BD |
27 | #include <plat/gpio-cfg.h> |
| 28 | ||
| 29 | static inline void s3c2410_gpio_cfgpin(unsigned int pin, unsigned int cfg) | |
| 30 | { | |
| 31 | /* 1:1 mapping between cfgpin and setcfg calls at the moment */ | |
| 32 | s3c_gpio_cfgpin(pin, cfg); | |
| 33 | } | |
| 34 | ||
| ec976d6e BD |
35 | /* external functions for GPIO support |
| 36 | * | |
| 37 | * These allow various different clients to access the same GPIO | |
| 38 | * registers without conflicting. If your driver only owns the entire | |
| 39 | * GPIO register, then it is safe to ioremap/__raw_{read|write} to it. | |
| 40 | */ | |
| 41 | ||
| ec976d6e BD |
42 | extern unsigned int s3c2410_gpio_getcfg(unsigned int pin); |
| 43 | ||
| 44 | /* s3c2410_gpio_getirq | |
| 45 | * | |
| 46 | * turn the given pin number into the corresponding IRQ number | |
| 47 | * | |
| 48 | * returns: | |
| 49 | * < 0 = no interrupt for this pin | |
| 50 | * >=0 = interrupt number for the pin | |
| 51 | */ | |
| 52 | ||
| 53 | extern int s3c2410_gpio_getirq(unsigned int pin); | |
| 54 | ||
| ec976d6e BD |
55 | /* s3c2410_gpio_irqfilter |
| 56 | * | |
| 57 | * set the irq filtering on the given pin | |
| 58 | * | |
| 59 | * on = 0 => disable filtering | |
| 60 | * 1 => enable filtering | |
| 61 | * | |
| 62 | * config = S3C2410_EINTFLT_PCLK or S3C2410_EINTFLT_EXTCLK orred with | |
| 63 | * width of filter (0 through 63) | |
| 64 | * | |
| 65 | * | |
| 66 | */ | |
| 67 | ||
| 68 | extern int s3c2410_gpio_irqfilter(unsigned int pin, unsigned int on, | |
| 69 | unsigned int config); | |
| 70 | ||
| eee2b94f BD |
71 | /* s3c2410_gpio_pullup |
| 72 | * | |
| 73 | * This call should be replaced with s3c_gpio_setpull(). | |
| 74 | * | |
| 75 | * As a note, there is currently no distinction between pull-up and pull-down | |
| 76 | * in the s3c24xx series devices with only an on/off configuration. | |
| 77 | */ | |
| 78 | ||
| ec976d6e BD |
79 | /* s3c2410_gpio_pullup |
| 80 | * | |
| 81 | * configure the pull-up control on the given pin | |
| 82 | * | |
| 83 | * to = 1 => disable the pull-up | |
| 84 | * 0 => enable the pull-up | |
| 85 | * | |
| 86 | * eg; | |
| 87 | * | |
| 070276d5 BD |
88 | * s3c2410_gpio_pullup(S3C2410_GPB(0), 0); |
| 89 | * s3c2410_gpio_pullup(S3C2410_GPE(8), 0); | |
| ec976d6e BD |
90 | */ |
| 91 | ||
| 92 | extern void s3c2410_gpio_pullup(unsigned int pin, unsigned int to); | |
| 93 | ||
| ec976d6e BD |
94 | extern void s3c2410_gpio_setpin(unsigned int pin, unsigned int to); |
| 95 | ||
| 96 | extern unsigned int s3c2410_gpio_getpin(unsigned int pin); | |
| eee2b94f BD |
97 | |
| 98 | #endif /* __MACH_GPIO_FNS_H */ |