1 files changed, 45 insertions, 0 deletions
diff --git a/drivers/staging/xgifb/vb_util.c b/drivers/staging/xgifb/vb_util.c
new file mode 100644
index 00000000..1b452f8b
--- /dev/null
+++ b/drivers/staging/xgifb/vb_util.c
@@ -0,0 +1,45 @@
+#include "vgatypes.h"
+#include "vb_util.h"
+
+void xgifb_reg_set(unsigned long port, u8 index, u8 data)
+{
+	outb(index, port);
+	outb(data, port + 1);
+}
+
+u8 xgifb_reg_get(unsigned long port, u8 index)
+{
+	u8 data;
+
+	outb(index, port);
+	data = inb(port + 1);
+	return data;
+}
+
+void xgifb_reg_and_or(unsigned long port, u8 index,
+		unsigned data_and, unsigned data_or)
+{
+	u8 temp;
+
+	temp = xgifb_reg_get(port, index); /* XGINew_Part1Port index 02 */
+	temp = (temp & data_and) | data_or;
+	xgifb_reg_set(port, index, temp);
+}
+
+void xgifb_reg_and(unsigned long port, u8 index, unsigned data_and)
+{
+	u8 temp;
+
+	temp = xgifb_reg_get(port, index); /* XGINew_Part1Port index 02 */
+	temp &= data_and;
+	xgifb_reg_set(port, index, temp);
+}
+
+void xgifb_reg_or(unsigned long port, u8 index, unsigned data_or)
+{
+	u8 temp;
+
+	temp = xgifb_reg_get(port, index); /* XGINew_Part1Port index 02 */
+	temp |= data_or;
+	xgifb_reg_set(port, index, temp);
+}