LXR linux/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
  39static inline int i8042_read_data(void)
  40{
  41        return readb(I8042_DATA_REG);
  42}
  43
  44static inline int i8042_read_status(void)
  45{
  46        return readb(I8042_STATUS_REG);
  47}
  48
  49static inline void i8042_write_data(int val)
  50{
  51        writeb(val, I8042_DATA_REG);
  52}
  53
  54static inline void i8042_write_command(int val)
  55{
  56        writeb(val, I8042_COMMAND_REG);
  57}
  58
  59static 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
  68static inline void i8042_platform_exit(void)
  69{
  70        release_mem_region(I8042_REGION_START, I8042_REGION_SIZE);
  71}
  72
  73#endif /* _I8042_UNICORE32_H */
  74