drivers/staging/xgifb/vb_util.h

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