aboutsummaryrefslogtreecommitdiffstats
path: root/arch
diff options
context:
space:
mode:
authorKan-Ru Chen <kanru@0xlab.org>2010-08-02 07:21:41 -0400
committerTony Lindgren <tony@atomide.com>2010-08-02 07:21:41 -0400
commit2e130fc3d4fd5b38ee5d3c0a5c7f9fb85bce698e (patch)
treec0d9f4d97d17d74e71f5fde9534fdc6380a914ed /arch
parentad0c63f1d623ea9d3e0c0521d5ce9cd522c4e1f0 (diff)
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>
Diffstat (limited to 'arch')
-rw-r--r--arch/arm/mach-omap2/id.c10
-rw-r--r--arch/arm/mach-omap2/include/mach/id.h22
2 files changed, 32 insertions, 0 deletions
diff --git a/arch/arm/mach-omap2/id.c b/arch/arm/mach-omap2/id.c
index ccaa1ed8e0f1..d079ccfa294e 100644
--- a/arch/arm/mach-omap2/id.c
+++ b/arch/arm/mach-omap2/id.c
@@ -25,6 +25,8 @@
25#include <plat/control.h> 25#include <plat/control.h>
26#include <plat/cpu.h> 26#include <plat/cpu.h>
27 27
28#include <mach/id.h>
29
28static struct omap_chip_id omap_chip; 30static struct omap_chip_id omap_chip;
29static unsigned int omap_revision; 31static unsigned int omap_revision;
30 32
@@ -102,6 +104,14 @@ static struct omap_id omap_ids[] __initdata = {
102static void __iomem *tap_base; 104static void __iomem *tap_base;
103static u16 tap_prod_id; 105static u16 tap_prod_id;
104 106
107void omap_get_die_id(struct omap_die_id *odi)
108{
109 odi->id_0 = read_tap_reg(OMAP_TAP_DIE_ID_0);
110 odi->id_1 = read_tap_reg(OMAP_TAP_DIE_ID_1);
111 odi->id_2 = read_tap_reg(OMAP_TAP_DIE_ID_2);
112 odi->id_3 = read_tap_reg(OMAP_TAP_DIE_ID_3);
113}
114
105static void __init omap24xx_check_revision(void) 115static void __init omap24xx_check_revision(void)
106{ 116{
107 int i, j; 117 int i, j;
diff --git a/arch/arm/mach-omap2/include/mach/id.h b/arch/arm/mach-omap2/include/mach/id.h
new file mode 100644
index 000000000000..02ed3aa56f1e
--- /dev/null
+++ b/arch/arm/mach-omap2/include/mach/id.h
@@ -0,0 +1,22 @@
1/*
2 * OMAP2 CPU identification code
3 *
4 * Copyright (C) 2010 Kan-Ru Chen <kanru@0xlab.org>
5 *
6 * This program is free software; you can redistribute it and/or modify
7 * it under the terms of the GNU General Public License version 2 as
8 * published by the Free Software Foundation.
9 */
10#ifndef OMAP2_ARCH_ID_H
11#define OMAP2_ARCH_ID_H
12
13struct omap_die_id {
14 u32 id_0;
15 u32 id_1;
16 u32 id_2;
17 u32 id_3;
18};
19
20void omap_get_die_id(struct omap_die_id *odi);
21
22#endif