uart: add other serial core layer get attributes

Signed-off-by: Alan Cox <alan@linux.intel.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

1 files changed, 112 insertions, 0 deletions

diff --git a/Documentation/ABI/testing/sysfs-tty b/Documentation/ABI/testing/sysfs-tty
index 0c430150d92..ad22fb0ee76 100644
--- a/Documentation/ABI/testing/sysfs-tty
+++ b/Documentation/ABI/testing/sysfs-tty
@@ -26,3 +26,115 @@ Description:
                  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.