linux/Documentation/ABI/testing/sysfs-tty
Greg Kroah-Hartman 5c0a2450d6 Revert "tty: Set correct tty name in 'active' sysfs attribute"
This reverts commit d8a5dc3033.

This breaks plymouth installs, either because plymouth is using the file
"incorrectly" or because the patch is incorrect.  Either way, this needs
to be reverted until it is all figured out.

Reported-by: Josh Boyer <jwboyer@fedoraproject.org>
Reported-by: Ray Strode <halfline@gmail.com>
Cc: Lennart Poettering <lennart@poettering.net>
Cc: Kay Sievers <kay@vrfy.org>
Cc: Jiri Slaby <jslaby@suse.cz>
Cc: David Herrmann <dh.herrmann@gmail.com>
Cc: Werner Fink <werner@suse.de>
Cc: Hannes Reinecke <hare@suse.de>
Cc: stable <stable@vger.kernel.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2014-02-22 14:31:04 -08:00

141 lines
4.0 KiB
Plaintext

What: /sys/class/tty/console/active
Date: Nov 2010
Contact: Kay Sievers <kay.sievers@vrfy.org>
Description:
Shows the list of currently configured
console devices, like 'tty1 ttyS0'.
The last entry in the file is the active
device connected to /dev/console.
The file supports poll() to detect virtual
console switches.
What: /sys/class/tty/tty0/active
Date: Nov 2010
Contact: Kay Sievers <kay.sievers@vrfy.org>
Description:
Shows the currently active virtual console
device, like 'tty1'.
The file supports poll() to detect virtual
console switches.
What: /sys/class/tty/ttyS0/uartclk
Date: Sep 2012
Contact: Tomas Hlavacek <tmshlvck@gmail.com>
Description:
Shows the current uartclk value associated with the
UART port in serial_core, that is bound to TTY like ttyS0.
uartclk = 16 * baud_base
These sysfs values expose the TIOCGSERIAL interface via
sysfs rather than via ioctls.
What: /sys/class/tty/ttyS0/type
Date: October 2012
Contact: Alan Cox <alan@linux.intel.com>
Description:
Shows the current tty type for this port.
These sysfs values expose the TIOCGSERIAL interface via
sysfs rather than via ioctls.
What: /sys/class/tty/ttyS0/line
Date: October 2012
Contact: Alan Cox <alan@linux.intel.com>
Description:
Shows the current tty line number for this port.
These sysfs values expose the TIOCGSERIAL interface via
sysfs rather than via ioctls.
What: /sys/class/tty/ttyS0/port
Date: October 2012
Contact: Alan Cox <alan@linux.intel.com>
Description:
Shows the current tty port I/O address for this port.
These sysfs values expose the TIOCGSERIAL interface via
sysfs rather than via ioctls.
What: /sys/class/tty/ttyS0/irq
Date: October 2012
Contact: Alan Cox <alan@linux.intel.com>
Description:
Shows the current primary interrupt for this port.
These sysfs values expose the TIOCGSERIAL interface via
sysfs rather than via ioctls.
What: /sys/class/tty/ttyS0/flags
Date: October 2012
Contact: Alan Cox <alan@linux.intel.com>
Description:
Show the tty port status flags for this port.
These sysfs values expose the TIOCGSERIAL interface via
sysfs rather than via ioctls.
What: /sys/class/tty/ttyS0/xmit_fifo_size
Date: October 2012
Contact: Alan Cox <alan@linux.intel.com>
Description:
Show the transmit FIFO size for this port.
These sysfs values expose the TIOCGSERIAL interface via
sysfs rather than via ioctls.
What: /sys/class/tty/ttyS0/close_delay
Date: October 2012
Contact: Alan Cox <alan@linux.intel.com>
Description:
Show the closing delay time for this port in ms.
These sysfs values expose the TIOCGSERIAL interface via
sysfs rather than via ioctls.
What: /sys/class/tty/ttyS0/closing_wait
Date: October 2012
Contact: Alan Cox <alan@linux.intel.com>
Description:
Show the close wait time for this port in ms.
These sysfs values expose the TIOCGSERIAL interface via
sysfs rather than via ioctls.
What: /sys/class/tty/ttyS0/custom_divisor
Date: October 2012
Contact: Alan Cox <alan@linux.intel.com>
Description:
Show the custom divisor if any that is set on this port.
These sysfs values expose the TIOCGSERIAL interface via
sysfs rather than via ioctls.
What: /sys/class/tty/ttyS0/io_type
Date: October 2012
Contact: Alan Cox <alan@linux.intel.com>
Description:
Show the I/O type that is to be used with the iomem base
address.
These sysfs values expose the TIOCGSERIAL interface via
sysfs rather than via ioctls.
What: /sys/class/tty/ttyS0/iomem_base
Date: October 2012
Contact: Alan Cox <alan@linux.intel.com>
Description:
The I/O memory base for this port.
These sysfs values expose the TIOCGSERIAL interface via
sysfs rather than via ioctls.
What: /sys/class/tty/ttyS0/iomem_reg_shift
Date: October 2012
Contact: Alan Cox <alan@linux.intel.com>
Description:
Show the register shift indicating the spacing to be used
for accesses on this iomem address.
These sysfs values expose the TIOCGSERIAL interface via
sysfs rather than via ioctls.