drivers/input/serio/i8042-unicore32io.h

   1 /*
   2  * Code specific to PKUnity SoC and UniCore ISA
   3  *
   4  *      Maintained by GUAN Xue-tao <gxt@mprc.pku.edu.cn>
   5  *      Copyright (C) 2001-2011 Guan Xuetao
   6  *
   7  * This program is free software; you can redistribute it and/or modify
   8  * it under the terms of the GNU General Public License version 2 as
   9  * published by the Free Software Foundation.
  10  */
  11 #ifndef _I8042_UNICORE32_H
  12 #define _I8042_UNICORE32_H
  13
  14 #include <mach/hardware.h>
  15
  16 /*
  17  * Names.
  18  */
  19 #define I8042_KBD_PHYS_DESC "isa0060/serio0"
  20 #define I8042_AUX_PHYS_DESC "isa0060/serio1"
  21 #define I8042_MUX_PHYS_DESC "isa0060/serio%d"
  22
  23 /*
  24  * IRQs.
  25  */
  26 #define I8042_KBD_IRQ           IRQ_PS2_KBD
  27 #define I8042_AUX_IRQ           IRQ_PS2_AUX
  28
  29 /*
  30  * Register numbers.
  31  */
  32 #define I8042_COMMAND_REG       PS2_COMMAND
  33 #define I8042_STATUS_REG        PS2_STATUS
  34 #define I8042_DATA_REG          PS2_DATA
  35
  36 #define I8042_REGION_START      (resource_size_t)(PS2_DATA)
  37 #define I8042_REGION_SIZE       (resource_size_t)(16)
  38
  39 static inline int i8042_read_data(void)
  40 {
  41         return readb(I8042_DATA_REG);
  42 }
  43
  44 static inline int i8042_read_status(void)
  45 {
  46         return readb(I8042_STATUS_REG);
  47 }
  48
  49 static inline void i8042_write_data(int val)
  50 {
  51         writeb(val, I8042_DATA_REG);
  52 }
  53
  54 static inline void i8042_write_command(int val)
  55 {
  56         writeb(val, I8042_COMMAND_REG);
  57 }
  58
  59 static inline int i8042_platform_init(void)
  60 {
  61         if (!request_mem_region(I8042_REGION_START, I8042_REGION_SIZE, "i8042"))
  62                 return -EBUSY;
  63
  64         i8042_reset = I8042_RESET_ALWAYS;
  65         return 0;
  66 }
  67
  68 static inline void i8042_platform_exit(void)
  69 {
  70         release_mem_region(I8042_REGION_START, I8042_REGION_SIZE);
  71 }
  72
  73 #endif /* _I8042_UNICORE32_H */