diff options
Diffstat (limited to 'Documentation/ABI/testing/sysfs-tty')
| -rw-r--r-- | Documentation/ABI/testing/sysfs-tty | 52 |
1 files changed, 31 insertions, 21 deletions
diff --git a/Documentation/ABI/testing/sysfs-tty b/Documentation/ABI/testing/sysfs-tty index 9eb3c2b6b040..895c47f05f6f 100644 --- a/Documentation/ABI/testing/sysfs-tty +++ b/Documentation/ABI/testing/sysfs-tty @@ -9,7 +9,7 @@ Description: The file supports poll() to detect virtual console switches. -What: /sys/class/tty/tty0/active +What: /sys/class/tty/tty<x>/active Date: Nov 2010 Contact: Kay Sievers <kay.sievers@vrfy.org> Description: @@ -18,7 +18,7 @@ Description: The file supports poll() to detect virtual console switches. -What: /sys/class/tty/ttyS0/uartclk +What: /sys/class/tty/ttyS<x>/uartclk Date: Sep 2012 Contact: Tomas Hlavacek <tmshlvck@gmail.com> Description: @@ -29,7 +29,7 @@ Description: These sysfs values expose the TIOCGSERIAL interface via sysfs rather than via ioctls. -What: /sys/class/tty/ttyS0/type +What: /sys/class/tty/ttyS<x>/type Date: October 2012 Contact: Alan Cox <alan@linux.intel.com> Description: @@ -38,7 +38,7 @@ Description: These sysfs values expose the TIOCGSERIAL interface via sysfs rather than via ioctls. -What: /sys/class/tty/ttyS0/line +What: /sys/class/tty/ttyS<x>/line Date: October 2012 Contact: Alan Cox <alan@linux.intel.com> Description: @@ -47,7 +47,7 @@ Description: These sysfs values expose the TIOCGSERIAL interface via sysfs rather than via ioctls. -What: /sys/class/tty/ttyS0/port +What: /sys/class/tty/ttyS<x>/port Date: October 2012 Contact: Alan Cox <alan@linux.intel.com> Description: @@ -56,7 +56,7 @@ Description: These sysfs values expose the TIOCGSERIAL interface via sysfs rather than via ioctls. -What: /sys/class/tty/ttyS0/irq +What: /sys/class/tty/ttyS<x>/irq Date: October 2012 Contact: Alan Cox <alan@linux.intel.com> Description: @@ -65,7 +65,7 @@ Description: These sysfs values expose the TIOCGSERIAL interface via sysfs rather than via ioctls. -What: /sys/class/tty/ttyS0/flags +What: /sys/class/tty/ttyS<x>/flags Date: October 2012 Contact: Alan Cox <alan@linux.intel.com> Description: @@ -74,7 +74,7 @@ Description: These sysfs values expose the TIOCGSERIAL interface via sysfs rather than via ioctls. -What: /sys/class/tty/ttyS0/xmit_fifo_size +What: /sys/class/tty/ttyS<x>/xmit_fifo_size Date: October 2012 Contact: Alan Cox <alan@linux.intel.com> Description: @@ -83,25 +83,28 @@ Description: These sysfs values expose the TIOCGSERIAL interface via sysfs rather than via ioctls. -What: /sys/class/tty/ttyS0/close_delay +What: /sys/class/tty/ttyS<x>/close_delay Date: October 2012 Contact: Alan Cox <alan@linux.intel.com> Description: - Show the closing delay time for this port in ms. + Show the closing delay time for this port in centiseconds. - These sysfs values expose the TIOCGSERIAL interface via - sysfs rather than via ioctls. + These sysfs values expose the TIOCGSERIAL interface via + sysfs rather than via ioctls. -What: /sys/class/tty/ttyS0/closing_wait +What: /sys/class/tty/ttyS<x>/closing_wait Date: October 2012 Contact: Alan Cox <alan@linux.intel.com> Description: - Show the close wait time for this port in ms. + Show the close wait time for this port in centiseconds. - These sysfs values expose the TIOCGSERIAL interface via - sysfs rather than via ioctls. + Waiting forever is represented as 0. If waiting on close is + disabled then the value is 65535. -What: /sys/class/tty/ttyS0/custom_divisor + These sysfs values expose the TIOCGSERIAL interface via + sysfs rather than via ioctls. + +What: /sys/class/tty/ttyS<x>/custom_divisor Date: October 2012 Contact: Alan Cox <alan@linux.intel.com> Description: @@ -110,7 +113,7 @@ Description: These sysfs values expose the TIOCGSERIAL interface via sysfs rather than via ioctls. -What: /sys/class/tty/ttyS0/io_type +What: /sys/class/tty/ttyS<x>/io_type Date: October 2012 Contact: Alan Cox <alan@linux.intel.com> Description: @@ -120,7 +123,7 @@ Description: These sysfs values expose the TIOCGSERIAL interface via sysfs rather than via ioctls. -What: /sys/class/tty/ttyS0/iomem_base +What: /sys/class/tty/ttyS<x>/iomem_base Date: October 2012 Contact: Alan Cox <alan@linux.intel.com> Description: @@ -129,7 +132,7 @@ Description: These sysfs values expose the TIOCGSERIAL interface via sysfs rather than via ioctls. -What: /sys/class/tty/ttyS0/iomem_reg_shift +What: /sys/class/tty/ttyS<x>/iomem_reg_shift Date: October 2012 Contact: Alan Cox <alan@linux.intel.com> Description: @@ -139,7 +142,7 @@ Description: These sysfs values expose the TIOCGSERIAL interface via sysfs rather than via ioctls. -What: /sys/class/tty/ttyS0/rx_trig_bytes +What: /sys/class/tty/ttyS<x>/rx_trig_bytes Date: May 2014 Contact: Yoshihiro YUNOMAE <yoshihiro.yunomae.ez@hitachi.com> Description: @@ -154,3 +157,10 @@ Description: device specification. For example, when user sets 7bytes on 16550A, which has 1/4/8/14 bytes trigger, the RX trigger is automatically changed to 4 bytes. + +What: /sys/class/tty/ttyS<x>/console +Date: February 2020 +Contact: Andy Shevchenko <andriy.shevchenko@linux.intel.com> +Description: + Allows user to detach or attach back the given device as + kernel console. It shows and accepts a boolean variable. |