drivers/input/serio/i8042-ppcio.h

   1 #ifndef _I8042_PPCIO_H
   2 #define _I8042_PPCIO_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 #if defined(CONFIG_WALNUT)
  11
  12 #define I8042_KBD_IRQ 25
  13 #define I8042_AUX_IRQ 26
  14
  15 #define I8042_KBD_PHYS_DESC "walnutps2/serio0"
  16 #define I8042_AUX_PHYS_DESC "walnutps2/serio1"
  17 #define I8042_MUX_PHYS_DESC "walnutps2/serio%d"
  18
  19 extern void *kb_cs;
  20 extern void *kb_data;
  21
  22 #define I8042_COMMAND_REG (*(int *)kb_cs)
  23 #define I8042_DATA_REG (*(int *)kb_data)
  24
  25 static inline int i8042_read_data(void)
  26 {
  27         return readb(kb_data);
  28 }
  29
  30 static inline int i8042_read_status(void)
  31 {
  32         return readb(kb_cs);
  33 }
  34
  35 static inline void i8042_write_data(int val)
  36 {
  37         writeb(val, kb_data);
  38 }
  39
  40 static inline void i8042_write_command(int val)
  41 {
  42         writeb(val, kb_cs);
  43 }
  44
  45 static inline int i8042_platform_init(void)
  46 {
  47         i8042_reset = 1;
  48         return 0;
  49 }
  50
  51 static inline void i8042_platform_exit(void)
  52 {
  53 }
  54
  55 #elif defined(CONFIG_SPRUCE)
  56
  57 #define I8042_KBD_IRQ 22
  58 #define I8042_AUX_IRQ 21
  59
  60 #define I8042_KBD_PHYS_DESC "spruceps2/serio0"
  61 #define I8042_AUX_PHYS_DESC "spruceps2/serio1"
  62 #define I8042_MUX_PHYS_DESC "spruceps2/serio%d"
  63
  64 #define I8042_COMMAND_REG 0xff810000
  65 #define I8042_DATA_REG 0xff810001
  66
  67 static inline int i8042_read_data(void)
  68 {
  69         unsigned long kbd_data;
  70
  71         __raw_writel(0x00000088, 0xff500008);
  72         eieio();
  73
  74         __raw_writel(0x03000000, 0xff50000c);
  75         eieio();
  76
  77         asm volatile("lis     7,0xff88        \n\
  78                       lswi    6,7,0x8         \n\
  79                       mr      %0,6"
  80                       : "=r" (kbd_data) :: "6", "7");
  81
  82         __raw_writel(0x00000000, 0xff50000c);
  83         eieio();
  84
  85         return (unsigned char)(kbd_data >> 24);
  86 }
  87
  88 static inline int i8042_read_status(void)
  89 {
  90         unsigned long kbd_status;
  91
  92         __raw_writel(0x00000088, 0xff500008);
  93         eieio();
  94
  95         __raw_writel(0x03000000, 0xff50000c);
  96         eieio();
  97
  98         asm volatile("lis     7,0xff88        \n\
  99                       ori     7,7,0x8         \n\
 100                       lswi    6,7,0x8         \n\
 101                       mr      %0,6"
 102                       : "=r" (kbd_status) :: "6", "7");
 103
 104         __raw_writel(0x00000000, 0xff50000c);
 105         eieio();
 106
 107         return (unsigned char)(kbd_status >> 24);
 108 }
 109
 110 static inline void i8042_write_data(int val)
 111 {
 112         *((unsigned char *)0xff810000) = (char)val;
 113 }
 114
 115 static inline void i8042_write_command(int val)
 116 {
 117         *((unsigned char *)0xff810001) = (char)val;
 118 }
 119
 120 static inline int i8042_platform_init(void)
 121 {
 122         i8042_reset = 1;
 123         return 0;
 124 }
 125
 126 static inline void i8042_platform_exit(void)
 127 {
 128 }
 129
 130 #else
 131
 132 #include "i8042-io.h"
 133
 134 #endif
 135
 136 #endif /* _I8042_PPCIO_H */