1 files changed, 58 insertions, 0 deletions

diff --git a/include/linux/vga_switcheroo.h b/include/linux/vga_switcheroo.h
new file mode 100644
index 000000000000..4b58ab1e8612
--- /dev/null
+++ b/include/linux/vga_switcheroo.h
@@ -0,0 +1,58 @@
+/*
+ * Copyright (c) 2010 Red Hat Inc.
+ * Author : Dave Airlie <airlied@redhat.com>
+ *
+ * Licensed under GPLv2
+ *
+ * vga_switcheroo.h - Support for laptop with dual GPU using one set of outputs
+ */
+
+#include <acpi/acpi.h>
+#include <linux/fb.h>
+
+enum vga_switcheroo_state {
+        VGA_SWITCHEROO_OFF,
+        VGA_SWITCHEROO_ON,
+};
+
+enum vga_switcheroo_client_id {
+        VGA_SWITCHEROO_IGD,
+        VGA_SWITCHEROO_DIS,
+        VGA_SWITCHEROO_MAX_CLIENTS,
+};
+
+struct vga_switcheroo_handler {
+        int (*switchto)(enum vga_switcheroo_client_id id);
+        int (*power_state)(enum vga_switcheroo_client_id id,
+                           enum vga_switcheroo_state state);
+        int (*init)(void);
+        int (*get_client_id)(struct pci_dev *pdev);
+};
+
+
+#if defined(CONFIG_VGA_SWITCHEROO)
+void vga_switcheroo_unregister_client(struct pci_dev *dev);
+int vga_switcheroo_register_client(struct pci_dev *dev,
+                                   void (*set_gpu_state)(struct pci_dev *dev, enum vga_switcheroo_state),
+                                   bool (*can_switch)(struct pci_dev *dev));
+
+void vga_switcheroo_client_fb_set(struct pci_dev *dev,
+                                  struct fb_info *info);
+
+int vga_switcheroo_register_handler(struct vga_switcheroo_handler *handler);
+void vga_switcheroo_unregister_handler(void);
+
+int vga_switcheroo_process_delayed_switch(void);
+
+#else
+
+static inline void vga_switcheroo_unregister_client(struct pci_dev *dev) {}
+static inline int vga_switcheroo_register_client(struct pci_dev *dev,
+                                          void (*set_gpu_state)(struct pci_dev *dev, enum vga_switcheroo_state),
+                                          bool (*can_switch)(struct pci_dev *dev)) { return 0; }
+static inline void vga_switcheroo_client_fb_set(struct pci_dev *dev, struct fb_info *info) {}
+static inline int vga_switcheroo_register_handler(struct vga_switcheroo_handler *handler) { return 0; }
+static inline void vga_switcheroo_unregister_handler(void) {}
+static inline int vga_switcheroo_process_delayed_switch(void) { return 0; }
+
+#endif