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-rw-r--r--drivers/staging/udlfb/Kconfig14
-rw-r--r--drivers/staging/udlfb/udlfb.c14
2 files changed, 24 insertions, 4 deletions
diff --git a/drivers/staging/udlfb/Kconfig b/drivers/staging/udlfb/Kconfig
index 641692d..65bd5db 100644
--- a/drivers/staging/udlfb/Kconfig
+++ b/drivers/staging/udlfb/Kconfig
@@ -1,8 +1,14 @@
config FB_UDL
tristate "Displaylink USB Framebuffer support"
depends on FB && USB
+ select FB_MODE_HELPERS
+ select FB_SYS_FILLRECT
+ select FB_SYS_COPYAREA
+ select FB_SYS_IMAGEBLIT
+ select FB_SYS_FOPS
+ select FB_DEFERRED_IO
---help---
- This is an experimental driver for DisplayLink USB devices
- that provides a framebuffer device. A normal framebuffer can
- be used with this driver, or xorg can be run on the device
- using it.
+ This is a kernel framebuffer driver for DisplayLink USB devices.
+ Supports fbdev clients like xf86-video-fbdev, kdrive, fbi, and
+ mplayer -vo fbdev. Supports all USB 2.0 era DisplayLink devices.
+ To compile as a module, choose M here: the module name is udlfb.
diff --git a/drivers/staging/udlfb/udlfb.c b/drivers/staging/udlfb/udlfb.c
index 939b8fa..baad03a 100644
--- a/drivers/staging/udlfb/udlfb.c
+++ b/drivers/staging/udlfb/udlfb.c
@@ -56,6 +56,20 @@ static struct usb_device_id id_table[] = {
};
MODULE_DEVICE_TABLE(usb, id_table);
+#ifndef CONFIG_FB_DEFERRED_IO
+#warning message "kernel FB_DEFFERRED_IO option to support generic fbdev apps"
+#endif
+
+#ifndef CONFIG_FB_SYS_IMAGEBLIT
+#ifndef CONFIG_FB_SYS_IMAGEBLIT_MODULE
+#warning message "FB_SYS_* in kernel or module option to support fb console"
+#endif
+#endif
+
+#ifndef CONFIG_FB_MODE_HELPERS
+#warning message "kernel FB_MODE_HELPERS required. Expect build break"
+#endif
+
/* dlfb keeps a list of urbs for efficient bulk transfers */
static void dlfb_urb_completion(struct urb *urb);
static struct urb *dlfb_get_urb(struct dlfb_data *dev);