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| author | Tomas Hlavacek <tmshlvck@gmail.com> | 2012-09-06 03:17:18 +0200 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2012-09-06 09:22:04 -0700 |
| commit | 6915c0e487c822e2436683e14302c0b8a6155cc7 (patch) | |
| tree | 3ef744c612c40517ed64d4f370a14c6c51eaab2f /Documentation | |
| parent | d83b54250988758cd3b9d21c242f98ae61fa1435 (diff) | |
| download | linux-6915c0e487c822e2436683e14302c0b8a6155cc7.tar.bz2 | |
tty: uartclk value from serial_core exposed to sysfs
Added file /sys/devices/.../tty/ttySX/uartclk to allow reading
uartclk value in struct uart_port in serial_core via sysfs.
tty_register_device() has been generalized and refactored in order
to add support for setting drvdata and attribute_group to the device.
Signed-off-by: Tomas Hlavacek <tmshlvck@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Diffstat (limited to 'Documentation')
| -rw-r--r-- | Documentation/ABI/testing/sysfs-tty | 9 |
1 files changed, 9 insertions, 0 deletions
diff --git a/Documentation/ABI/testing/sysfs-tty b/Documentation/ABI/testing/sysfs-tty index b138b663bf54..0c430150d929 100644 --- a/Documentation/ABI/testing/sysfs-tty +++ b/Documentation/ABI/testing/sysfs-tty @@ -17,3 +17,12 @@ Description: 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 + |