mirror of https://gitee.com/openkylin/linux.git
113 lines
2.8 KiB
C
113 lines
2.8 KiB
C
/* linux/include/asm-arm/arch-s3c2410/hardware.h
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*
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* (c) 2003 Simtec Electronics
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* Ben Dooks <ben@simtec.co.uk>
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*
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* S3C2410 - hardware
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License version 2 as
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* published by the Free Software Foundation.
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*
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* Changelog:
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* 21-May-2003 BJD Created file
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* 06-Jun-2003 BJD Added CPU frequency settings
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* 03-Sep-2003 BJD Linux v2.6 support
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* 12-Mar-2004 BJD Fixed include protection, fixed type of clock vars
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* 14-Sep-2004 BJD Added misccr and getpin to gpio
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* 01-Oct-2004 BJD Added the new gpio functions
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* 16-Oct-2004 BJD Removed the clock variables
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*/
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#ifndef __ASM_ARCH_HARDWARE_H
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#define __ASM_ARCH_HARDWARE_H
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#ifndef __ASSEMBLY__
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/* external functions for GPIO support
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*
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* These allow various different clients to access the same GPIO
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* registers without conflicting. If your driver only owns the entire
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* GPIO register, then it is safe to ioremap/__raw_{read|write} to it.
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*/
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/* s3c2410_gpio_cfgpin
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*
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* set the configuration of the given pin to the value passed.
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*
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* eg:
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* s3c2410_gpio_cfgpin(S3C2410_GPA0, S3C2410_GPA0_ADDR0);
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* s3c2410_gpio_cfgpin(S3C2410_GPE8, S3C2410_GPE8_SDDAT1);
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*/
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extern void s3c2410_gpio_cfgpin(unsigned int pin, unsigned int function);
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extern unsigned int s3c2410_gpio_getcfg(unsigned int pin);
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/* s3c2410_gpio_getirq
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*
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* turn the given pin number into the corresponding IRQ number
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*
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* returns:
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* < 0 = no interrupt for this pin
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* >=0 = interrupt number for the pin
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*/
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extern int s3c2410_gpio_getirq(unsigned int pin);
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/* s3c2410_gpio_irqfilter
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*
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* set the irq filtering on the given pin
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*
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* on = 0 => disable filtering
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* 1 => enable filtering
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*
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* config = S3C2410_EINTFLT_PCLK or S3C2410_EINTFLT_EXTCLK orred with
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* width of filter (0 through 63)
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*
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*
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*/
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extern int s3c2410_gpio_irqfilter(unsigned int pin, unsigned int on,
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unsigned int config);
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/* s3c2410_gpio_pullup
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*
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* configure the pull-up control on the given pin
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*
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* to = 1 => disable the pull-up
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* 0 => enable the pull-up
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*
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* eg;
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*
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* s3c2410_gpio_pullup(S3C2410_GPB0, 0);
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* s3c2410_gpio_pullup(S3C2410_GPE8, 0);
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*/
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extern void s3c2410_gpio_pullup(unsigned int pin, unsigned int to);
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extern void s3c2410_gpio_setpin(unsigned int pin, unsigned int to);
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extern unsigned int s3c2410_gpio_getpin(unsigned int pin);
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extern unsigned int s3c2410_modify_misccr(unsigned int clr, unsigned int chg);
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#ifdef CONFIG_CPU_S3C2440
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extern int s3c2440_set_dsc(unsigned int pin, unsigned int value);
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#endif /* CONFIG_CPU_S3C2440 */
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#endif /* __ASSEMBLY__ */
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#include <asm/sizes.h>
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#include <asm/arch/map.h>
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/* machine specific hardware definitions should go after this */
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/* currently here until moved into config (todo) */
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#define CONFIG_NO_MULTIWORD_IO
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#endif /* __ASM_ARCH_HARDWARE_H */
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