| Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1 | /* linux/include/asm-arm/arch-s3c2410/hardware.h |
| 2 | * |
| 3 | * (c) 2003 Simtec Electronics |
| 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 | * Changelog: |
| 13 | * 21-May-2003 BJD Created file |
| 14 | * 06-Jun-2003 BJD Added CPU frequency settings |
| 15 | * 03-Sep-2003 BJD Linux v2.6 support |
| 16 | * 12-Mar-2004 BJD Fixed include protection, fixed type of clock vars |
| 17 | * 14-Sep-2004 BJD Added misccr and getpin to gpio |
| 18 | * 01-Oct-2004 BJD Added the new gpio functions |
| 19 | * 16-Oct-2004 BJD Removed the clock variables |
| 20 | */ |
| 21 | |
| 22 | #ifndef __ASM_ARCH_HARDWARE_H |
| 23 | #define __ASM_ARCH_HARDWARE_H |
| 24 | |
| 25 | #ifndef __ASSEMBLY__ |
| 26 | |
| 27 | /* external functions for GPIO support |
| 28 | * |
| 29 | * These allow various different clients to access the same GPIO |
| 30 | * registers without conflicting. If your driver only owns the entire |
| 31 | * GPIO register, then it is safe to ioremap/__raw_{read|write} to it. |
| 32 | */ |
| 33 | |
| 34 | /* s3c2410_gpio_cfgpin |
| 35 | * |
| 36 | * set the configuration of the given pin to the value passed. |
| 37 | * |
| 38 | * eg: |
| 39 | * s3c2410_gpio_cfgpin(S3C2410_GPA0, S3C2410_GPA0_ADDR0); |
| 40 | * s3c2410_gpio_cfgpin(S3C2410_GPE8, S3C2410_GPE8_SDDAT1); |
| 41 | */ |
| 42 | |
| 43 | extern void s3c2410_gpio_cfgpin(unsigned int pin, unsigned int function); |
| 44 | |
| 45 | extern unsigned int s3c2410_gpio_getcfg(unsigned int pin); |
| 46 | |
| 47 | /* s3c2410_gpio_getirq |
| 48 | * |
| 49 | * turn the given pin number into the corresponding IRQ number |
| 50 | * |
| 51 | * returns: |
| 52 | * < 0 = no interrupt for this pin |
| 53 | * >=0 = interrupt number for the pin |
| 54 | */ |
| 55 | |
| 56 | extern int s3c2410_gpio_getirq(unsigned int pin); |
| 57 | |
| 58 | /* s3c2410_gpio_irqfilter |
| 59 | * |
| 60 | * set the irq filtering on the given pin |
| 61 | * |
| 62 | * on = 0 => disable filtering |
| 63 | * 1 => enable filtering |
| 64 | * |
| 65 | * config = S3C2410_EINTFLT_PCLK or S3C2410_EINTFLT_EXTCLK orred with |
| 66 | * width of filter (0 through 63) |
| 67 | * |
| 68 | * |
| 69 | */ |
| 70 | |
| 71 | extern int s3c2410_gpio_irqfilter(unsigned int pin, unsigned int on, |
| 72 | unsigned int config); |
| 73 | |
| 74 | /* s3c2410_gpio_pullup |
| 75 | * |
| 76 | * configure the pull-up control on the given pin |
| 77 | * |
| 78 | * to = 1 => disable the pull-up |
| 79 | * 0 => enable the pull-up |
| 80 | * |
| 81 | * eg; |
| 82 | * |
| 83 | * s3c2410_gpio_pullup(S3C2410_GPB0, 0); |
| 84 | * s3c2410_gpio_pullup(S3C2410_GPE8, 0); |
| 85 | */ |
| 86 | |
| 87 | extern void s3c2410_gpio_pullup(unsigned int pin, unsigned int to); |
| 88 | |
| 89 | extern void s3c2410_gpio_setpin(unsigned int pin, unsigned int to); |
| 90 | |
| 91 | extern unsigned int s3c2410_gpio_getpin(unsigned int pin); |
| 92 | |
| 93 | extern unsigned int s3c2410_modify_misccr(unsigned int clr, unsigned int chg); |
| 94 | |
| Ben Dooks | 9153bd7 | 2005-10-13 16:46:35 +0100 | [diff] [blame^] | 95 | #ifdef CONFIG_CPU_S3C2440 |
| 96 | |
| 97 | extern int s3c2440_set_dsc(unsigned int pin, unsigned int value); |
| 98 | |
| 99 | #endif /* CONFIG_CPU_S3C2440 */ |
| 100 | |
| 101 | |
| Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 102 | #endif /* __ASSEMBLY__ */ |
| 103 | |
| 104 | #include <asm/sizes.h> |
| 105 | #include <asm/arch/map.h> |
| 106 | |
| 107 | /* machine specific hardware definitions should go after this */ |
| 108 | |
| 109 | /* currently here until moved into config (todo) */ |
| 110 | #define CONFIG_NO_MULTIWORD_IO |
| 111 | |
| 112 | #endif /* __ASM_ARCH_HARDWARE_H */ |