projects / mirror_ubuntu-artful-kernel.git / blame
| Commit | Line | Data |
|---|---|---|
| fbc92a34 KS |
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 | |
| 5c0a2450 | 6 | console devices, like 'tty1 ttyS0'. |
| fbc92a34 KS |
7 | The last entry in the file is the active |
| 8 | device connected to /dev/console. | |
| 9 | The file supports poll() to detect virtual | |
| 10 | console switches. | |
| 11 | ||
| 12 | What: /sys/class/tty/tty0/active | |
| 13 | Date: Nov 2010 | |
| 14 | Contact: Kay Sievers <kay.sievers@vrfy.org> | |
| 15 | Description: | |
| 16 | Shows the currently active virtual console | |
| 17 | device, like 'tty1'. | |
| 18 | The file supports poll() to detect virtual | |
| 19 | console switches. | |
| 6915c0e4 TH |
20 | |
| 21 | What: /sys/class/tty/ttyS0/uartclk | |
| 22 | Date: Sep 2012 | |
| 23 | Contact: Tomas Hlavacek <tmshlvck@gmail.com> | |
| 24 | Description: | |
| 25 | Shows the current uartclk value associated with the | |
| 26 | UART port in serial_core, that is bound to TTY like ttyS0. | |
| 27 | uartclk = 16 * baud_base | |
| 28 | ||
| 373bac4c AC |
29 | These sysfs values expose the TIOCGSERIAL interface via |
| 30 | sysfs rather than via ioctls. | |
| 31 | ||
| 32 | What: /sys/class/tty/ttyS0/type | |
| 33 | Date: October 2012 | |
| 34 | Contact: Alan Cox <alan@linux.intel.com> | |
| 35 | Description: | |
| 36 | Shows the current tty type for this port. | |
| 37 | ||
| 38 | These sysfs values expose the TIOCGSERIAL interface via | |
| 39 | sysfs rather than via ioctls. | |
| 40 | ||
| 41 | What: /sys/class/tty/ttyS0/line | |
| 42 | Date: October 2012 | |
| 43 | Contact: Alan Cox <alan@linux.intel.com> | |
| 44 | Description: | |
| 45 | Shows the current tty line number for this port. | |
| 46 | ||
| 47 | These sysfs values expose the TIOCGSERIAL interface via | |
| 48 | sysfs rather than via ioctls. | |
| 49 | ||
| 50 | What: /sys/class/tty/ttyS0/port | |
| 51 | Date: October 2012 | |
| 52 | Contact: Alan Cox <alan@linux.intel.com> | |
| 53 | Description: | |
| 54 | Shows the current tty port I/O address for this port. | |
| 55 | ||
| 56 | These sysfs values expose the TIOCGSERIAL interface via | |
| 57 | sysfs rather than via ioctls. | |
| 58 | ||
| 59 | What: /sys/class/tty/ttyS0/irq | |
| 60 | Date: October 2012 | |
| 61 | Contact: Alan Cox <alan@linux.intel.com> | |
| 62 | Description: | |
| 63 | Shows the current primary interrupt for this port. | |
| 64 | ||
| 65 | These sysfs values expose the TIOCGSERIAL interface via | |
| 66 | sysfs rather than via ioctls. | |
| 67 | ||
| 68 | What: /sys/class/tty/ttyS0/flags | |
| 69 | Date: October 2012 | |
| 70 | Contact: Alan Cox <alan@linux.intel.com> | |
| 71 | Description: | |
| 72 | Show the tty port status flags for this port. | |
| 73 | ||
| 74 | These sysfs values expose the TIOCGSERIAL interface via | |
| 75 | sysfs rather than via ioctls. | |
| 76 | ||
| 77 | What: /sys/class/tty/ttyS0/xmit_fifo_size | |
| 78 | Date: October 2012 | |
| 79 | Contact: Alan Cox <alan@linux.intel.com> | |
| 80 | Description: | |
| 81 | Show the transmit FIFO size for this port. | |
| 82 | ||
| 83 | These sysfs values expose the TIOCGSERIAL interface via | |
| 84 | sysfs rather than via ioctls. | |
| 85 | ||
| 86 | What: /sys/class/tty/ttyS0/close_delay | |
| 87 | Date: October 2012 | |
| 88 | Contact: Alan Cox <alan@linux.intel.com> | |
| 89 | Description: | |
| 90 | Show the closing delay time for this port in ms. | |
| 91 | ||
| 92 | These sysfs values expose the TIOCGSERIAL interface via | |
| 93 | sysfs rather than via ioctls. | |
| 94 | ||
| 95 | What: /sys/class/tty/ttyS0/closing_wait | |
| 96 | Date: October 2012 | |
| 97 | Contact: Alan Cox <alan@linux.intel.com> | |
| 98 | Description: | |
| 99 | Show the close wait time for this port in ms. | |
| 100 | ||
| 101 | These sysfs values expose the TIOCGSERIAL interface via | |
| 102 | sysfs rather than via ioctls. | |
| 103 | ||
| 104 | What: /sys/class/tty/ttyS0/custom_divisor | |
| 105 | Date: October 2012 | |
| 106 | Contact: Alan Cox <alan@linux.intel.com> | |
| 107 | Description: | |
| 108 | Show the custom divisor if any that is set on this port. | |
| 109 | ||
| 110 | These sysfs values expose the TIOCGSERIAL interface via | |
| 111 | sysfs rather than via ioctls. | |
| 112 | ||
| 113 | What: /sys/class/tty/ttyS0/io_type | |
| 114 | Date: October 2012 | |
| 115 | Contact: Alan Cox <alan@linux.intel.com> | |
| 116 | Description: | |
| 117 | Show the I/O type that is to be used with the iomem base | |
| 118 | address. | |
| 119 | ||
| 120 | These sysfs values expose the TIOCGSERIAL interface via | |
| 121 | sysfs rather than via ioctls. | |
| 122 | ||
| 123 | What: /sys/class/tty/ttyS0/iomem_base | |
| 124 | Date: October 2012 | |
| 125 | Contact: Alan Cox <alan@linux.intel.com> | |
| 126 | Description: | |
| 127 | The I/O memory base for this port. | |
| 128 | ||
| 129 | These sysfs values expose the TIOCGSERIAL interface via | |
| 130 | sysfs rather than via ioctls. | |
| 131 | ||
| 132 | What: /sys/class/tty/ttyS0/iomem_reg_shift | |
| 133 | Date: October 2012 | |
| 134 | Contact: Alan Cox <alan@linux.intel.com> | |
| 135 | Description: | |
| 136 | Show the register shift indicating the spacing to be used | |
| 137 | for accesses on this iomem address. | |
| 138 | ||
| 139 | These sysfs values expose the TIOCGSERIAL interface via | |
| 140 | sysfs rather than via ioctls. | |
| aef9a7bd YY |
141 | |
| 142 | What: /sys/class/tty/ttyS0/rx_trig_bytes | |
| 143 | Date: May 2014 | |
| 144 | Contact: Yoshihiro YUNOMAE <yoshihiro.yunomae.ez@hitachi.com> | |
| 145 | Description: | |
| 146 | Shows current RX interrupt trigger bytes or sets the | |
| 147 | user specified value to change it for the FIFO buffer. | |
| 148 | Users can show or set this value regardless of opening the | |
| 149 | serial device file or not. | |
| 150 | ||
| 151 | The RX trigger can be set one of four kinds of values for UART | |
| 152 | serials. When users input a meaning less value to this I/F, | |
| 153 | the RX trigger is changed to the nearest lower value for the | |
| 154 | device specification. For example, when user sets 7bytes on | |
| 155 | 16550A, which has 1/4/8/14 bytes trigger, the RX trigger is | |
| 156 | automatically changed to 4 bytes. |