From: Kan-Ru Chen <kanru@xxxxxxxxx>
Allow DIE id to be get and used by others.
Signed-off-by: Kan-Ru Chen <kanru@xxxxxxxxx>
Signed-off-by: Tony Lindgren <tony@xxxxxxxxxxx>
---
arch/arm/mach-omap2/id.c | 10 ++++++++++
arch/arm/mach-omap2/include/mach/id.h | 22 ++++++++++++++++++++++
2 files changed, 32 insertions(+), 0 deletions(-)
create mode 100644 arch/arm/mach-omap2/include/mach/id.h
diff --git a/arch/arm/mach-omap2/id.c b/arch/arm/mach-omap2/id.c
index ccaa1ed..d079ccf 100644
--- a/arch/arm/mach-omap2/id.c
+++ b/arch/arm/mach-omap2/id.c
@@ -25,6 +25,8 @@
#include <plat/control.h>
#include <plat/cpu.h>
+#include <mach/id.h>
+
static struct omap_chip_id omap_chip;
static unsigned int omap_revision;
@@ -102,6 +104,14 @@ static struct omap_id omap_ids[] __initdata = {
static void __iomem *tap_base;
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)
{
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 0000000..02ed3aa
--- /dev/null
+++ b/arch/arm/mach-omap2/include/mach/id.h
@@ -0,0 +1,22 @@
+/*
+ * OMAP2 CPU identification code
+ *
+ * Copyright (C) 2010 Kan-Ru Chen <kanru@xxxxxxxxx>
+ *
+ * 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
--
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