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_LOONGARCH)
  23 #include "i8042-acpipnpio.h"
  24 #else
  25 #include "i8042-io.h"
  26 #endif
  27
  28 /*
  29  * This is in 50us units, the time we wait for the i8042 to react. This
  30  * has to be long enough for the i8042 itself to timeout on sending a byte
  31  * to a non-existent mouse.
  32  */
  33
  34 #define I8042_CTL_TIMEOUT       10000
  35
  36 /*
  37  * Return codes.
  38  */
  39
  40 #define I8042_RET_CTL_TEST      0x55
  41
  42 /*
  43  * Expected maximum internal i8042 buffer size. This is used for flushing
  44  * the i8042 buffers.
  45  */
  46
  47 #define I8042_BUFFER_SIZE       16
  48
  49 /*
  50  * Number of AUX ports on controllers supporting active multiplexing
  51  * specification
  52  */
  53
  54 #define I8042_NUM_MUX_PORTS     4
  55
  56 /*
  57  * Debug.
  58  */
  59
  60 #ifdef DEBUG
  61 static unsigned long i8042_start_time;
  62 #define dbg_init() do { i8042_start_time = jiffies; } while (0)
  63 #define dbg(format, arg...)                                                     \
  64         do {                                                                    \
  65                 if (i8042_debug)                                                \
  66                         printk(KERN_DEBUG KBUILD_MODNAME ": [%d] " format,      \
  67                                (int) (jiffies - i8042_start_time), ##arg);      \
  68         } while (0)
  69
  70 #define filter_dbg(filter, data, format, args...)               \
  71         do {                                                    \
  72                 if (!i8042_debug)                               \
  73                         break;                                  \
  74                                                                 \
  75                 if (!filter || i8042_unmask_kbd_data)           \
  76                         dbg("%02x " format, data, ##args);      \
  77                 else                                            \
  78                         dbg("** " format, ##args);              \
  79         } while (0)
  80 #else
  81 #define dbg_init() do { } while (0)
  82 #define dbg(format, arg...)                                                     \
  83         do {                                                                    \
  84                 if (0)                                                          \
  85                         printk(KERN_DEBUG pr_fmt(format), ##arg);               \
  86         } while (0)
  87
  88 #define filter_dbg(filter, data, format, args...) do { } while (0)
  89 #endif
  90
  91 #endif /* _I8042_H */