drivers/staging/xgifb/vb_util.c

   1 #include "vgatypes.h"
   2 #include "vb_util.h"
   3
   4 void xgifb_reg_set(unsigned long port, u8 index, u8 data)
   5 {
   6         outb(index, port);
   7         outb(data, port + 1);
   8 }
   9
  10 u8 xgifb_reg_get(unsigned long port, u8 index)
  11 {
  12         u8 data;
  13
  14         outb(index, port);
  15         data = inb(port + 1);
  16         return data;
  17 }
  18
  19 void xgifb_reg_and_or(unsigned long port, u8 index,
  20                 unsigned data_and, unsigned data_or)
  21 {
  22         u8 temp;
  23
  24         temp = xgifb_reg_get(port, index); /* XGINew_Part1Port index 02 */
  25         temp = (temp & data_and) | data_or;
  26         xgifb_reg_set(port, index, temp);
  27 }
  28
  29 void xgifb_reg_and(unsigned long port, u8 index, unsigned data_and)
  30 {
  31         u8 temp;
  32
  33         temp = xgifb_reg_get(port, index); /* XGINew_Part1Port index 02 */
  34         temp &= data_and;
  35         xgifb_reg_set(port, index, temp);
  36 }
  37
  38 void xgifb_reg_or(unsigned long port, u8 index, unsigned data_or)
  39 {
  40         u8 temp;
  41
  42         temp = xgifb_reg_get(port, index); /* XGINew_Part1Port index 02 */
  43         temp |= data_or;
  44         xgifb_reg_set(port, index, temp);
  45 }