drivers/input/serio/i8042-unicore32io.h

   1 /* SPDX-License-Identifier: GPL-2.0-only */
   2 /*
   3  * Code specific to PKUnity SoC and UniCore ISA
   4  *
   5  *      Maintained by GUAN Xue-tao <gxt@mprc.pku.edu.cn>
   6  *      Copyright (C) 2001-2011 Guan Xuetao
   7  */
   8 #ifndef _I8042_UNICORE32_H
   9 #define _I8042_UNICORE32_H
  10
  11 #include <mach/hardware.h>
  12
  13 /*
  14  * Names.
  15  */
  16 #define I8042_KBD_PHYS_DESC "isa0060/serio0"
  17 #define I8042_AUX_PHYS_DESC "isa0060/serio1"
  18 #define I8042_MUX_PHYS_DESC "isa0060/serio%d"
  19
  20 /*
  21  * IRQs.
  22  */
  23 #define I8042_KBD_IRQ           IRQ_PS2_KBD
  24 #define I8042_AUX_IRQ           IRQ_PS2_AUX
  25
  26 /*
  27  * Register numbers.
  28  */
  29 #define I8042_COMMAND_REG       PS2_COMMAND
  30 #define I8042_STATUS_REG        PS2_STATUS
  31 #define I8042_DATA_REG          PS2_DATA
  32
  33 #define I8042_REGION_START      (resource_size_t)(PS2_DATA)
  34 #define I8042_REGION_SIZE       (resource_size_t)(16)
  35
  36 static inline int i8042_read_data(void)
  37 {
  38         return readb(I8042_DATA_REG);
  39 }
  40
  41 static inline int i8042_read_status(void)
  42 {
  43         return readb(I8042_STATUS_REG);
  44 }
  45
  46 static inline void i8042_write_data(int val)
  47 {
  48         writeb(val, I8042_DATA_REG);
  49 }
  50
  51 static inline void i8042_write_command(int val)
  52 {
  53         writeb(val, I8042_COMMAND_REG);
  54 }
  55
  56 static inline int i8042_platform_init(void)
  57 {
  58         if (!request_mem_region(I8042_REGION_START, I8042_REGION_SIZE, "i8042"))
  59                 return -EBUSY;
  60
  61         i8042_reset = I8042_RESET_ALWAYS;
  62         return 0;
  63 }
  64
  65 static inline void i8042_platform_exit(void)
  66 {
  67         release_mem_region(I8042_REGION_START, I8042_REGION_SIZE);
  68 }
  69
  70 #endif /* _I8042_UNICORE32_H */