add device class attributes (9.6)week-4

1 files changed, 31 insertions, 8 deletions

diff --git a/driver/platform.h b/driver/platform.h
index cee82a7..ecac681 100644
--- a/driver/platform.h
+++ b/driver/platform.h
@@ -2,19 +2,42 @@
 
 #include <linux/types.h>
 #include <linux/platform_device.h>
+#include <linux/slab.h>
 
-ssize_t attr_show(struct device_driver*, char*);
-ssize_t attr_store(struct device_driver*, const char*, size_t);
+int lork_probe(struct platform_device*);
+int lork_remove(struct platform_device*);
 
-static struct driver_attribute attr = {
+
+ssize_t drv_attr_int_show(struct device_driver*, char*);
+ssize_t drv_attr_int_store(struct device_driver*, const char*, size_t);
+static const struct driver_attribute drv_attr_int = {
 	.attr = {
-		.name = "attr",
+		.name = "int",
 		.mode = 0644,
 	},
-	.show = attr_show,
-	.store = attr_store,
+	.show = drv_attr_int_show,
+	.store = drv_attr_int_store,
 };
 
-int lork_probe(struct platform_device*);
-int lork_remove(struct platform_device*);
+ssize_t dev_attr_int_show(struct device*, struct device_attribute*, char*);
+ssize_t dev_attr_int_store(struct device*, struct device_attribute*, const char*, size_t);
+static const struct device_attribute dev_attr_int = {
+	.attr = {
+		.name = "int",
+		.mode = 0644,
+	},
+	.show = dev_attr_int_show,
+	.store = dev_attr_int_store,
+};
+
+ssize_t dev_attr_str_show(struct device*, struct device_attribute*, char*);
+ssize_t dev_attr_str_store(struct device*, struct device_attribute*, const char*, size_t);
+static const struct device_attribute dev_attr_str = {
+	.attr = {
+		.name = "str",
+		.mode = 0644,
+	},
+	.show = dev_attr_str_show,
+	.store = dev_attr_str_store,
+};