84 строки
2.2 KiB
C
84 строки
2.2 KiB
C
/*
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* linux/include/asm-arm/arch-pxa/hardware.h
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*
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* Author: Nicolas Pitre
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* Created: Jun 15, 2001
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* Copyright: MontaVista Software Inc.
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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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#ifndef __ASM_ARCH_HARDWARE_H
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#define __ASM_ARCH_HARDWARE_H
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/*
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* We requires absolute addresses.
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*/
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#define PCIO_BASE 0
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/*
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* Workarounds for at least 2 errata so far require this.
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* The mapping is set in mach-pxa/generic.c.
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*/
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#define UNCACHED_PHYS_0 0xff000000
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#define UNCACHED_ADDR UNCACHED_PHYS_0
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/*
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* Intel PXA2xx internal register mapping:
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*
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* 0x40000000 - 0x41ffffff <--> 0xf2000000 - 0xf3ffffff
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* 0x44000000 - 0x45ffffff <--> 0xf4000000 - 0xf5ffffff
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* 0x48000000 - 0x49ffffff <--> 0xf6000000 - 0xf7ffffff
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* 0x4c000000 - 0x4dffffff <--> 0xf8000000 - 0xf9ffffff
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* 0x50000000 - 0x51ffffff <--> 0xfa000000 - 0xfbffffff
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* 0x54000000 - 0x55ffffff <--> 0xfc000000 - 0xfdffffff
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* 0x58000000 - 0x59ffffff <--> 0xfe000000 - 0xffffffff
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*
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* Note that not all PXA2xx chips implement all those addresses, and the
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* kernel only maps the minimum needed range of this mapping.
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*/
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#define io_p2v(x) (0xf2000000 + ((x) & 0x01ffffff) + (((x) & 0x1c000000) >> 1))
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#define io_v2p(x) (0x3c000000 + ((x) & 0x01ffffff) + (((x) & 0x0e000000) << 1))
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#ifndef __ASSEMBLY__
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# define __REG(x) (*((volatile u32 *)io_p2v(x)))
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/* With indexed regs we don't want to feed the index through io_p2v()
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especially if it is a variable, otherwise horrible code will result. */
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# define __REG2(x,y) \
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(*(volatile u32 *)((u32)&__REG(x) + (y)))
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# define __PREG(x) (io_v2p((u32)&(x)))
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#else
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# define __REG(x) io_p2v(x)
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# define __PREG(x) io_v2p(x)
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#endif
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#ifndef __ASSEMBLY__
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/*
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* Handy routine to set GPIO alternate functions
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*/
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extern void pxa_gpio_mode( int gpio_mode );
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/*
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* Routine to enable or disable CKEN
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*/
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extern void pxa_set_cken(int clock, int enable);
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/*
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* return current memory and LCD clock frequency in units of 10kHz
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*/
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extern unsigned int get_memclk_frequency_10khz(void);
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extern unsigned int get_lcdclk_frequency_10khz(void);
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#endif
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#endif /* _ASM_ARCH_HARDWARE_H */
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