drivers/input/serio/i8042-io.h

   1 #ifndef _I8042_IO_H
   2 #define _I8042_IO_H
   3
   4 /*
   5  * This program is free software; you can redistribute it and/or modify it
   6  * under the terms of the GNU General Public License version 2 as published by
   7  * the Free Software Foundation.
   8  */
   9
  10 /*
  11  * Names.
  12  */
  13
  14 #define I8042_KBD_PHYS_DESC "isa0060/serio0"
  15 #define I8042_AUX_PHYS_DESC "isa0060/serio1"
  16 #define I8042_MUX_PHYS_DESC "isa0060/serio%d"
  17
  18 /*
  19  * IRQs.
  20  */
  21
  22 #ifdef __alpha__
  23 # define I8042_KBD_IRQ  1
  24 # define I8042_AUX_IRQ  (RTC_PORT(0) == 0x170 ? 9 : 12) /* Jensen is special */
  25 #elif defined(__ia64__)
  26 # define I8042_KBD_IRQ isa_irq_to_vector(1)
  27 # define I8042_AUX_IRQ isa_irq_to_vector(12)
  28 #elif defined(__arm__)
  29 /* defined in include/asm-arm/arch-xxx/irqs.h */
  30 #include <asm/irq.h>
  31 #elif defined(CONFIG_SUPERH64)
  32 #include <asm/irq.h>
  33 #else
  34 # define I8042_KBD_IRQ  1
  35 # define I8042_AUX_IRQ  12
  36 #endif
  37
  38 /*
  39  * Register numbers.
  40  */
  41
  42 #define I8042_COMMAND_REG       0x64
  43 #define I8042_STATUS_REG        0x64
  44 #define I8042_DATA_REG          0x60
  45
  46 static inline int i8042_read_data(void)
  47 {
  48         return inb(I8042_DATA_REG);
  49 }
  50
  51 static inline int i8042_read_status(void)
  52 {
  53         return inb(I8042_STATUS_REG);
  54 }
  55
  56 static inline void i8042_write_data(int val)
  57 {
  58         outb(val, I8042_DATA_REG);
  59         return;
  60 }
  61
  62 static inline void i8042_write_command(int val)
  63 {
  64         outb(val, I8042_COMMAND_REG);
  65         return;
  66 }
  67
  68 #if defined(__i386__)
  69
  70 #include <linux/dmi.h>
  71
  72 static struct dmi_system_id __initdata i8042_dmi_table[] = {
  73         {
  74                 .ident = "Compaq Proliant 8500",
  75                 .matches = {
  76                         DMI_MATCH(DMI_SYS_VENDOR, "Compaq"),
  77                         DMI_MATCH(DMI_PRODUCT_NAME , "ProLiant"),
  78                         DMI_MATCH(DMI_PRODUCT_VERSION, "8500"),
  79                 },
  80         },
  81         {
  82                 .ident = "Compaq Proliant DL760",
  83                 .matches = {
  84                         DMI_MATCH(DMI_SYS_VENDOR, "Compaq"),
  85                         DMI_MATCH(DMI_PRODUCT_NAME , "ProLiant"),
  86                         DMI_MATCH(DMI_PRODUCT_VERSION, "DL760"),
  87                 },
  88         },
  89         { }
  90 };
  91 #endif
  92
  93 static inline int i8042_platform_init(void)
  94 {
  95 /*
  96  * On ix86 platforms touching the i8042 data register region can do really
  97  * bad things. Because of this the region is always reserved on ix86 boxes.
  98  */
  99 #if !defined(__i386__) && !defined(__sh__) && !defined(__alpha__) && !defined(__x86_64__) && !defined(__mips__)
 100         if (!request_region(I8042_DATA_REG, 16, "i8042"))
 101                 return -1;
 102 #endif
 103
 104 #if !defined(__i386__) && !defined(__x86_64__)
 105         i8042_reset = 1;
 106 #endif
 107
 108 #if defined(__i386__)
 109         if (dmi_check_system(i8042_dmi_table))
 110                 i8042_noloop = 1;
 111 #endif
 112
 113         return 0;
 114 }
 115
 116 static inline void i8042_platform_exit(void)
 117 {
 118 #if !defined(__i386__) && !defined(__sh__) && !defined(__alpha__) && !defined(__x86_64__)
 119         release_region(I8042_DATA_REG, 16);
 120 #endif
 121 }
 122
 123 #endif /* _I8042_IO_H */