Pileus Git - ~andy/linux/blob - Documentation/ABI/testing/sysfs-tty

   1 What:           /sys/class/tty/console/active
   2 Date:           Nov 2010
   3 Contact:        Kay Sievers <kay.sievers@vrfy.org>
   4 Description:
   5                  Shows the list of currently configured
   6                  tty devices used for the console,
   7                  like 'tty1 ttyS0'.
   8                  The last entry in the file is the active
   9                  device connected to /dev/console.
  10                  The file supports poll() to detect virtual
  11                  console switches.
  12
  13 What:           /sys/class/tty/tty0/active
  14 Date:           Nov 2010
  15 Contact:        Kay Sievers <kay.sievers@vrfy.org>
  16 Description:
  17                  Shows the currently active virtual console
  18                  device, like 'tty1'.
  19                  The file supports poll() to detect virtual
  20                  console switches.
  21
  22 What:           /sys/class/tty/ttyS0/uartclk
  23 Date:           Sep 2012
  24 Contact:        Tomas Hlavacek <tmshlvck@gmail.com>
  25 Description:
  26                  Shows the current uartclk value associated with the
  27                  UART port in serial_core, that is bound to TTY like ttyS0.
  28                  uartclk = 16 * baud_base
  29
  30                  These sysfs values expose the TIOCGSERIAL interface via
  31                  sysfs rather than via ioctls.
  32
  33 What:           /sys/class/tty/ttyS0/type
  34 Date:           October 2012
  35 Contact:        Alan Cox <alan@linux.intel.com>
  36 Description:
  37                  Shows the current tty type for this port.
  38
  39                  These sysfs values expose the TIOCGSERIAL interface via
  40                  sysfs rather than via ioctls.
  41
  42 What:           /sys/class/tty/ttyS0/line
  43 Date:           October 2012
  44 Contact:        Alan Cox <alan@linux.intel.com>
  45 Description:
  46                  Shows the current tty line number for this port.
  47
  48                  These sysfs values expose the TIOCGSERIAL interface via
  49                  sysfs rather than via ioctls.
  50
  51 What:           /sys/class/tty/ttyS0/port
  52 Date:           October 2012
  53 Contact:        Alan Cox <alan@linux.intel.com>
  54 Description:
  55                  Shows the current tty port I/O address for this port.
  56
  57                  These sysfs values expose the TIOCGSERIAL interface via
  58                  sysfs rather than via ioctls.
  59
  60 What:           /sys/class/tty/ttyS0/irq
  61 Date:           October 2012
  62 Contact:        Alan Cox <alan@linux.intel.com>
  63 Description:
  64                  Shows the current primary interrupt for this port.
  65
  66                  These sysfs values expose the TIOCGSERIAL interface via
  67                  sysfs rather than via ioctls.
  68
  69 What:           /sys/class/tty/ttyS0/flags
  70 Date:           October 2012
  71 Contact:        Alan Cox <alan@linux.intel.com>
  72 Description:
  73                  Show the tty port status flags for this port.
  74
  75                  These sysfs values expose the TIOCGSERIAL interface via
  76                  sysfs rather than via ioctls.
  77
  78 What:           /sys/class/tty/ttyS0/xmit_fifo_size
  79 Date:           October 2012
  80 Contact:        Alan Cox <alan@linux.intel.com>
  81 Description:
  82                  Show the transmit FIFO size for this port.
  83
  84                  These sysfs values expose the TIOCGSERIAL interface via
  85                  sysfs rather than via ioctls.
  86
  87 What:           /sys/class/tty/ttyS0/close_delay
  88 Date:           October 2012
  89 Contact:        Alan Cox <alan@linux.intel.com>
  90 Description:
  91                  Show the closing delay time for this port in ms.
  92
  93                  These sysfs values expose the TIOCGSERIAL interface via
  94                  sysfs rather than via ioctls.
  95
  96 What:           /sys/class/tty/ttyS0/closing_wait
  97 Date:           October 2012
  98 Contact:        Alan Cox <alan@linux.intel.com>
  99 Description:
 100                  Show the close wait time for this port in ms.
 101
 102                  These sysfs values expose the TIOCGSERIAL interface via
 103                  sysfs rather than via ioctls.
 104
 105 What:           /sys/class/tty/ttyS0/custom_divisor
 106 Date:           October 2012
 107 Contact:        Alan Cox <alan@linux.intel.com>
 108 Description:
 109                  Show the custom divisor if any that is set on this port.
 110
 111                  These sysfs values expose the TIOCGSERIAL interface via
 112                  sysfs rather than via ioctls.
 113
 114 What:           /sys/class/tty/ttyS0/io_type
 115 Date:           October 2012
 116 Contact:        Alan Cox <alan@linux.intel.com>
 117 Description:
 118                  Show the I/O type that is to be used with the iomem base
 119                  address.
 120
 121                  These sysfs values expose the TIOCGSERIAL interface via
 122                  sysfs rather than via ioctls.
 123
 124 What:           /sys/class/tty/ttyS0/iomem_base
 125 Date:           October 2012
 126 Contact:        Alan Cox <alan@linux.intel.com>
 127 Description:
 128                  The I/O memory base for this port.
 129
 130                  These sysfs values expose the TIOCGSERIAL interface via
 131                  sysfs rather than via ioctls.
 132
 133 What:           /sys/class/tty/ttyS0/iomem_reg_shift
 134 Date:           October 2012
 135 Contact:        Alan Cox <alan@linux.intel.com>
 136 Description:
 137                  Show the register shift indicating the spacing to be used
 138                  for accesses on this iomem address.
 139
 140                  These sysfs values expose the TIOCGSERIAL interface via
 141                  sysfs rather than via ioctls.