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omap: Add new interface omap_get_die_id 

Allow DIE id to be get and used by others.

Signed-off-by: Kan-Ru Chen <kanru@0xlab.org>
Signed-off-by: Tony Lindgren <tony@atomide.com>
This commit is contained in:
Kan-Ru Chen 2010-08-02 14:21:41 +03:00 committed by Tony Lindgren
parent ad0c63f1d6
commit 2e130fc3d4
2 changed files with 32 additions and 0 deletions
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10
arch/arm/mach-omap2/id.c
View File

@ -25,6 +25,8 @@
#include <plat/control.h> #include <plat/control.h>
#include <plat/cpu.h> #include <plat/cpu.h>
#include <mach/id.h>
static struct omap_chip_id omap_chip; static struct omap_chip_id omap_chip;
static unsigned int omap_revision; static unsigned int omap_revision;
@ -102,6 +104,14 @@ static struct omap_id omap_ids[] __initdata = {
static void __iomem *tap_base; static void __iomem *tap_base;
static u16 tap_prod_id; static u16 tap_prod_id;
void omap_get_die_id(struct omap_die_id *odi)
{
odi->id_0 = read_tap_reg(OMAP_TAP_DIE_ID_0);
odi->id_1 = read_tap_reg(OMAP_TAP_DIE_ID_1);
odi->id_2 = read_tap_reg(OMAP_TAP_DIE_ID_2);
odi->id_3 = read_tap_reg(OMAP_TAP_DIE_ID_3);
}
static void __init omap24xx_check_revision(void) static void __init omap24xx_check_revision(void)
{ {
int i, j; int i, j;

22
arch/arm/mach-omap2/include/mach/id.h Normal file
View File

@ -0,0 +1,22 @@
/*
* OMAP2 CPU identification code
*
* Copyright (C) 2010 Kan-Ru Chen <kanru@0xlab.org>
*
* 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.
*/
#ifndef OMAP2_ARCH_ID_H
#define OMAP2_ARCH_ID_H
struct omap_die_id {
u32 id_0;
u32 id_1;
u32 id_2;
u32 id_3;
};
void omap_get_die_id(struct omap_die_id *odi);
#endif