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