i386/linux/linux-2.3.21/include/net/irda/w83977af.h

   1 #ifndef W83977AF_H
   2 #define W83977AF_H
   3
   4 #define W977_EFER 0x370
   5 #define W977_EFIR 0x370
   6 #define W977_EFDR 0x371
   7 #define W977_DEVICE_IR 0x06
   8
   9
  10 /*
  11  * Enter extended function mode
  12  */
  13 static inline void w977_efm_enter(void)
  14 {
  15         outb(0x87, W977_EFER);
  16         outb(0x87, W977_EFER);
  17 }
  18
  19 /*
  20  * Select a device to configure
  21  */
  22
  23 static inline void w977_select_device(__u8 devnum)
  24 {
  25         outb(0x07, W977_EFIR);
  26         outb(devnum, W977_EFDR);
  27 }
  28
  29 /*
  30  * Write a byte to a register
  31  */
  32 static inline void w977_write_reg(__u8 reg, __u8 value)
  33 {
  34         outb(reg, W977_EFIR);
  35         outb(value, W977_EFDR);
  36 }
  37
  38 /*
  39  * read a byte from a register
  40  */
  41 static inline __u8 w977_read_reg(__u8 reg)
  42 {
  43         outb(reg, W977_EFIR);
  44         return inb(W977_EFDR);
  45 }
  46
  47 /*
  48  * Exit extended function mode
  49  */
  50 static inline void w977_efm_exit(void)
  51 {
  52         outb(0xAA, W977_EFER);
  53 }
  54 #endif