drivers/input/serio/i8042.h

   1 /* SPDX-License-Identifier: GPL-2.0-only */
   2 #ifndef _I8042_H
   3 #define _I8042_H
   4
   5
   6 /*
   7  *  Copyright (c) 1999-2002 Vojtech Pavlik
   8  */
   9
  10 /*
  11  * Arch-dependent inline functions and defines.
  12  */
  13
  14 #if defined(CONFIG_MACH_JAZZ)
  15 #include "i8042-jazzio.h"
  16 #elif defined(CONFIG_SGI_HAS_I8042)
  17 #include "i8042-ip22io.h"
  18 #elif defined(CONFIG_SNI_RM)
  19 #include "i8042-snirm.h"
  20 #elif defined(CONFIG_SPARC)
  21 #include "i8042-sparcio.h"
  22 #elif defined(CONFIG_X86) || defined(CONFIG_IA64)
  23 #include "i8042-x86ia64io.h"
  24 #elif defined(CONFIG_UNICORE32)
  25 #include "i8042-unicore32io.h"
  26 #else
  27 #include "i8042-io.h"
  28 #endif
  29
  30 /*
  31  * This is in 50us units, the time we wait for the i8042 to react. This
  32  * has to be long enough for the i8042 itself to timeout on sending a byte
  33  * to a non-existent mouse.
  34  */
  35
  36 #define I8042_CTL_TIMEOUT       10000
  37
  38 /*
  39  * Return codes.
  40  */
  41
  42 #define I8042_RET_CTL_TEST      0x55
  43
  44 /*
  45  * Expected maximum internal i8042 buffer size. This is used for flushing
  46  * the i8042 buffers.
  47  */
  48
  49 #define I8042_BUFFER_SIZE       16
  50
  51 /*
  52  * Number of AUX ports on controllers supporting active multiplexing
  53  * specification
  54  */
  55
  56 #define I8042_NUM_MUX_PORTS     4
  57
  58 /*
  59  * Debug.
  60  */
  61
  62 #ifdef DEBUG
  63 static unsigned long i8042_start_time;
  64 #define dbg_init() do { i8042_start_time = jiffies; } while (0)
  65 #define dbg(format, arg...)                                                     \
  66         do {                                                                    \
  67                 if (i8042_debug)                                                \
  68                         printk(KERN_DEBUG KBUILD_MODNAME ": [%d] " format,      \
  69                                (int) (jiffies - i8042_start_time), ##arg);      \
  70         } while (0)
  71
  72 #define filter_dbg(filter, data, format, args...)               \
  73         do {                                                    \
  74                 if (!i8042_debug)                               \
  75                         break;                                  \
  76                                                                 \
  77                 if (!filter || i8042_unmask_kbd_data)           \
  78                         dbg("%02x " format, data, ##args);      \
  79                 else                                            \
  80                         dbg("** " format, ##args);              \
  81         } while (0)
  82 #else
  83 #define dbg_init() do { } while (0)
  84 #define dbg(format, arg...)                                                     \
  85         do {                                                                    \
  86                 if (0)                                                          \
  87                         printk(KERN_DEBUG pr_fmt(format), ##arg);               \
  88         } while (0)
  89
  90 #define filter_dbg(filter, data, format, args...) do { } while (0)
  91 #endif
  92
  93 #endif /* _I8042_H */