Driver Core: early platform driver

[net-next-2.6.git] / include / linux / platform_device.h

diff --git a/include/linux/platform_device.h b/include/linux/platform_device.h
index 76e470a299bfb9365078574e9ca3b1f438eae1d7..72736fd8223cc765f1ca0e7f7cc9959d928feaba 100644 (file)
--- a/include/linux/platform_device.h
+++ b/include/linux/platform_device.h
@@ -77,4 +77,46 @@ extern int platform_driver_probe(struct platform_driver *driver,
 #define platform_get_drvdata(_dev)     dev_get_drvdata(&(_dev)->dev)
 #define platform_set_drvdata(_dev,data)        dev_set_drvdata(&(_dev)->dev, (data))
 
+/* early platform driver interface */
+struct early_platform_driver {
+       const char *class_str;
+       struct platform_driver *pdrv;
+       struct list_head list;
+       int requested_id;
+};
+
+#define EARLY_PLATFORM_ID_UNSET -2
+#define EARLY_PLATFORM_ID_ERROR -3
+
+extern int early_platform_driver_register(struct early_platform_driver *epdrv,
+                                         char *buf);
+extern void early_platform_add_devices(struct platform_device **devs, int num);
+
+static inline int is_early_platform_device(struct platform_device *pdev)
+{
+       return !pdev->dev.driver;
+}
+
+extern void early_platform_driver_register_all(char *class_str);
+extern int early_platform_driver_probe(char *class_str,
+                                      int nr_probe, int user_only);
+extern void early_platform_cleanup(void);
+
+
+#ifndef MODULE
+#define early_platform_init(class_string, platform_driver)             \
+static __initdata struct early_platform_driver early_driver = {                \
+       .class_str = class_string,                                      \
+       .pdrv = platform_driver,                                        \
+       .requested_id = EARLY_PLATFORM_ID_UNSET,                        \
+};                                                                     \
+static int __init early_platform_driver_setup_func(char *buf)          \
+{                                                                      \
+       return early_platform_driver_register(&early_driver, buf);      \
+}                                                                      \
+early_param(class_string, early_platform_driver_setup_func)
+#else /* MODULE */
+#define early_platform_init(class_string, platform_driver)
+#endif /* MODULE */
+
 #endif /* _PLATFORM_DEVICE_H_ */