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Diffstat (limited to 'include/asm-arm/arch-s3c2410/hardware.h')
-rw-r--r-- | include/asm-arm/arch-s3c2410/hardware.h | 105 |
1 files changed, 105 insertions, 0 deletions
diff --git a/include/asm-arm/arch-s3c2410/hardware.h b/include/asm-arm/arch-s3c2410/hardware.h new file mode 100644 index 000000000000..48a39918a760 --- /dev/null +++ b/include/asm-arm/arch-s3c2410/hardware.h @@ -0,0 +1,105 @@ +/* linux/include/asm-arm/arch-s3c2410/hardware.h + * + * (c) 2003 Simtec Electronics + * Ben Dooks <ben@simtec.co.uk> + * + * S3C2410 - hardware + * + * 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. + * + * Changelog: + * 21-May-2003 BJD Created file + * 06-Jun-2003 BJD Added CPU frequency settings + * 03-Sep-2003 BJD Linux v2.6 support + * 12-Mar-2004 BJD Fixed include protection, fixed type of clock vars + * 14-Sep-2004 BJD Added misccr and getpin to gpio + * 01-Oct-2004 BJD Added the new gpio functions + * 16-Oct-2004 BJD Removed the clock variables +*/ + +#ifndef __ASM_ARCH_HARDWARE_H +#define __ASM_ARCH_HARDWARE_H + +#ifndef __ASSEMBLY__ + +/* external functions for GPIO support + * + * These allow various different clients to access the same GPIO + * registers without conflicting. If your driver only owns the entire + * GPIO register, then it is safe to ioremap/__raw_{read|write} to it. +*/ + +/* s3c2410_gpio_cfgpin + * + * set the configuration of the given pin to the value passed. + * + * eg: + * s3c2410_gpio_cfgpin(S3C2410_GPA0, S3C2410_GPA0_ADDR0); + * s3c2410_gpio_cfgpin(S3C2410_GPE8, S3C2410_GPE8_SDDAT1); +*/ + +extern void s3c2410_gpio_cfgpin(unsigned int pin, unsigned int function); + +extern unsigned int s3c2410_gpio_getcfg(unsigned int pin); + +/* s3c2410_gpio_getirq + * + * turn the given pin number into the corresponding IRQ number + * + * returns: + * < 0 = no interrupt for this pin + * >=0 = interrupt number for the pin +*/ + +extern int s3c2410_gpio_getirq(unsigned int pin); + +/* s3c2410_gpio_irqfilter + * + * set the irq filtering on the given pin + * + * on = 0 => disable filtering + * 1 => enable filtering + * + * config = S3C2410_EINTFLT_PCLK or S3C2410_EINTFLT_EXTCLK orred with + * width of filter (0 through 63) + * + * +*/ + +extern int s3c2410_gpio_irqfilter(unsigned int pin, unsigned int on, + unsigned int config); + +/* s3c2410_gpio_pullup + * + * configure the pull-up control on the given pin + * + * to = 1 => disable the pull-up + * 0 => enable the pull-up + * + * eg; + * + * s3c2410_gpio_pullup(S3C2410_GPB0, 0); + * s3c2410_gpio_pullup(S3C2410_GPE8, 0); +*/ + +extern void s3c2410_gpio_pullup(unsigned int pin, unsigned int to); + +extern void s3c2410_gpio_setpin(unsigned int pin, unsigned int to); + +extern unsigned int s3c2410_gpio_getpin(unsigned int pin); + +extern unsigned int s3c2410_modify_misccr(unsigned int clr, unsigned int chg); + +#endif /* __ASSEMBLY__ */ + +#include <asm/sizes.h> +#include <asm/arch/map.h> + +/* machine specific hardware definitions should go after this */ + +/* currently here until moved into config (todo) */ +#define CONFIG_NO_MULTIWORD_IO + +#endif /* __ASM_ARCH_HARDWARE_H */ |