diff options
| -rw-r--r-- | target/linux/omap35xx/patches-2.6.36/001-expose_omap3_die_id.patch | 48 |
1 files changed, 48 insertions, 0 deletions
diff --git a/target/linux/omap35xx/patches-2.6.36/001-expose_omap3_die_id.patch b/target/linux/omap35xx/patches-2.6.36/001-expose_omap3_die_id.patch new file mode 100644 index 000000000..6d3bed4e9 --- /dev/null +++ b/target/linux/omap35xx/patches-2.6.36/001-expose_omap3_die_id.patch @@ -0,0 +1,48 @@ +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); |