LXR linux/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
  19extern void *kb_cs;
  20extern void *kb_data;
  21
  22#define I8042_COMMAND_REG (*(int *)kb_cs)
  23#define I8042_DATA_REG (*(int *)kb_data)
  24
  25static inline int i8042_read_data(void)
  26{
  27        return readb(kb_data);
  28}
  29
  30static inline int i8042_read_status(void)
  31{
  32        return readb(kb_cs);
  33}
  34
  35static inline void i8042_write_data(int val)
  36{
  37        writeb(val, kb_data);
  38}
  39
  40static inline void i8042_write_command(int val)
  41{
  42        writeb(val, kb_cs);
  43}
  44
  45static inline int i8042_platform_init(void)
  46{
  47        i8042_reset = 1;
  48        return 0;
  49}
  50
  51static 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
  67static 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
  88static 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
 110static inline void i8042_write_data(int val)
 111{
 112        *((unsigned char *)0xff810000) = (char)val;
 113}
 114
 115static inline void i8042_write_command(int val)
 116{
 117        *((unsigned char *)0xff810001) = (char)val;
 118}
 119
 120static inline int i8042_platform_init(void)
 121{
 122        i8042_reset = 1;
 123        return 0;
 124}
 125
 126static 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 */
 137