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49 lines
1.4 KiB
Diff
49 lines
1.4 KiB
Diff
diff --git a/arch/arm/mach-omap2/id.c b/arch/arm/mach-omap2/id.c
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index 9a879f9..9cefef4 100644
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--- a/arch/arm/mach-omap2/id.c
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+++ b/arch/arm/mach-omap2/id.c
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@@ -85,6 +85,9 @@ EXPORT_SYMBOL(omap_type);
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#define read_tap_reg(reg) __raw_readl(tap_base + (reg))
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+static ssize_t die_id_show(struct kobject *, struct kobj_attribute *, char *);
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+static struct kobj_attribute die_id_attr = __ATTR(die_id, 0444, die_id_show, NULL);
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+
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struct omap_id {
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u16 hawkeye; /* Silicon type (Hawkeye id) */
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u8 dev; /* Device type from production_id reg */
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@@ -104,6 +107,17 @@ static struct omap_id omap_ids[] __initdata = {
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static void __iomem *tap_base;
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static u16 tap_prod_id;
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+static ssize_t die_id_show(struct kobject *kobj, struct kobj_attribute *attr,
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+ char *buf)
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+{
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+ return sprintf(buf, "Die ID: %08x%08x%08x%08x\n",
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+ read_tap_reg(OMAP_TAP_DIE_ID_0),
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+ read_tap_reg(OMAP_TAP_DIE_ID_1),
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+ read_tap_reg(OMAP_TAP_DIE_ID_2),
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+ read_tap_reg(OMAP_TAP_DIE_ID_3));
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+
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+}
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+
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void omap_get_die_id(struct omap_die_id *odi)
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{
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odi->id_0 = read_tap_reg(OMAP_TAP_DIE_ID_0);
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@@ -457,3 +471,15 @@ void __init omap2_set_globals_tap(struct omap_globals *omap2_globals)
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else
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tap_prod_id = 0x0208;
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}
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+
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+int __init export_omap_die_id(void)
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+{
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+ int error;
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+
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+ error = sysfs_create_file(power_kobj, &die_id_attr.attr);
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+ if (error)
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+ printk(KERN_ERR "sysfs_create_file failed: %d\n", error);
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+ return error;
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+}
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+
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+late_initcall(export_omap_die_id);
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