[RAMEN9610-11577][COMMON] soc: exynos-chipid: Add Board revision sysfs node

Change-Id: I407e2fbdeb876584b278a966ba74be6292683f01
Signed-off-by: Jaehyoung Choi <jkkkkk.choi@samsung.com>

diff --git a/drivers/soc/samsung/exynos-chipid.c b/drivers/soc/samsung/exynos-chipid.c
index 31ebffab8d6356e05dc5d50734000151a95a1b16..1a15fd3badd3fa74d89ca3f33bc0211fc8762e8e 100644 (file)
--- a/drivers/soc/samsung/exynos-chipid.c
+++ b/drivers/soc/samsung/exynos-chipid.c
@@ -22,6 +22,21 @@
 struct exynos_chipid_info exynos_soc_info;
 EXPORT_SYMBOL(exynos_soc_info);
 
+static long board_rev;
+
+static int __init get_revision(char *str)
+{
+       int res = 0;
+       res  = kstrtol(str, 16, &board_rev);
+       if (res)
+               pr_info("%s: Get Board Revision fail!!\n", __func__);
+       else
+               pr_info("Board Revision = 0x%x\n", board_rev);
+       return 0;
+}
+
+early_param("revision", get_revision);
+
 static const char * __init product_id_to_name(unsigned int product_id)
 {
        const char *soc_name;
@@ -308,6 +323,12 @@ static ssize_t chipid_memsize_show(struct device *dev,
        return snprintf(buf, 20, "%llu\n", exynos_soc_info.memsize);
 }
 
+static ssize_t chipid_board_id_show(struct kobject *kobj,
+                          struct kobj_attribute *attr, char *buf)
+{
+       return snprintf(buf, 14, "%ld", board_rev);
+}
+
 static struct device_attribute chipid_product_id_attr =
         __ATTR(product_id, 0644, chipid_product_id_show, NULL);
 
@@ -326,6 +347,9 @@ static struct device_attribute chipid_evt_ver_attr =
 static struct device_attribute chipid_memsize_attr =
        __ATTR(memsize, 0440, chipid_memsize_show, NULL);
 
+static struct kobj_attribute chipid_board_id_attr =
+       __ATTR(board_id, 0644, chipid_board_id_show, NULL);
+
 static struct attribute *chipid_sysfs_attrs[] = {
        &chipid_product_id_attr.attr,
        &chipid_unique_id_attr.attr,
@@ -333,6 +357,7 @@ static struct attribute *chipid_sysfs_attrs[] = {
        &chipid_revision_attr.attr,
        &chipid_evt_ver_attr.attr,
        &chipid_memsize_attr.attr,
+       &chipid_board_id_attr.attr,
        NULL,
 };