Commit 79da7a61 authored by Andrew Victor's avatar Andrew Victor Committed by Russell King
Browse files

[ARM] 3947/1: AT91: cpu_is_XXX macro's 



This patch replaces the arch_identify() in system.h with a set of
cpu_is_XXX() macro's.  This allows for compile-time checking of the
target AT91 processor.

Original patch from David Brownell.

Signed-off-by: default avatarAndrew Victor <andrew@sanpeople.com>
Signed-off-by: default avatarRussell King <rmk+kernel@arm.linux.org.uk>
parent 1f4fd0a0

drivers/serial/atmel_serial.c

+1 −1
Original line number Diff line number Diff line
@@ -138,7 +138,7 @@ static void atmel_set_mctrl(struct uart_port *port, u_int mctrl) 
	unsigned int mode;



#ifdef CONFIG_ARM

	if (arch_identify() == ARCH_ID_AT91RM9200) {

	if (cpu_is_at91rm9200()) {

		/*

		 * AT91RM9200 Errata #39: RTS0 is not internally connected to PA21.

		 *  We need to drive the pin manually.

include/asm-arm/arch-at91rm9200/cpu.h

0 → 100644
+49 −0
Original line number Diff line number Diff line 
/*

 * include/asm-arm/arch-at91rm9200/cpu.h

 *

 *  Copyright (C) 2006 SAN People

 *

 * This program is free software; you can redistribute it and/or modify

 * it under the terms of the GNU General Public License as published by

 * the Free Software Foundation; either version 2 of the License, or

 * (at your option) any later version.

 *

 */



#ifndef __ASM_ARCH_CPU_H

#define __ASM_ARCH_CPU_H



#include <asm/hardware.h>

#include <asm/arch/at91_dbgu.h>





#define ARCH_ID_AT91RM9200	0x09290780

#define ARCH_ID_AT91SAM9260	0x019803a0

#define ARCH_ID_AT91SAM9261	0x019703a0





static inline unsigned long at91_cpu_identify(void)

{

	return (at91_sys_read(AT91_DBGU_CIDR) & ~AT91_CIDR_VERSION);

}





#ifdef CONFIG_ARCH_AT91RM9200

#define cpu_is_at91rm9200()	(at91_cpu_identify() == ARCH_ID_AT91RM9200)

#else

#define cpu_is_at91rm9200()	(0)

#endif



#ifdef CONFIG_ARCH_AT91SAM9260

#define cpu_is_at91sam9260()	(at91_cpu_identify() == ARCH_ID_AT91SAM9260)

#else

#define cpu_is_at91sam9260()	(0)

#endif



#ifdef CONFIG_ARCH_AT91SAM9261

#define cpu_is_at91sam9261()	(at91_cpu_identify() == ARCH_ID_AT91SAM9261)

#else

#define cpu_is_at91sam9261()	(0)

#endif



#endif

include/asm-arm/arch-at91rm9200/system.h

+0 −8
Original line number Diff line number Diff line
@@ -50,12 +50,4 @@ static inline void arch_reset(char mode) 
	for (;;) {}	/* wait fovever */

}



#define ARCH_ID_AT91RM9200	0x09200080

#define ARCH_ID_AT91SAM9261	0x019000a0



static inline unsigned long arch_identify(void)

{

	return at91_sys_read(AT91_DBGU_CIDR) & (AT91_CIDR_EPROC | AT91_CIDR_ARCH);

}



#endif

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