2
0
mirror of https://github.com/edk2-porting/linux-next.git synced 2024-12-24 05:04:00 +08:00
linux-next/Documentation/driver-api/miscellaneous.rst
Thierry Reding 720688c449 docs: driver-api: Remove trailing blank line
There's no use for this blank line at the end of the file. Remove it.

Signed-off-by: Thierry Reding <treding@nvidia.com>
Signed-off-by: Jonathan Corbet <corbet@lwn.net>
2017-08-07 14:27:45 -06:00

50 lines
1.3 KiB
ReStructuredText

Parallel Port Devices
=====================
.. kernel-doc:: include/linux/parport.h
:internal:
.. kernel-doc:: drivers/parport/ieee1284.c
:export:
.. kernel-doc:: drivers/parport/share.c
:export:
.. kernel-doc:: drivers/parport/daisy.c
:internal:
16x50 UART Driver
=================
.. kernel-doc:: drivers/tty/serial/serial_core.c
:export:
.. kernel-doc:: drivers/tty/serial/8250/8250_core.c
:export:
Pulse-Width Modulation (PWM)
============================
Pulse-width modulation is a modulation technique primarily used to
control power supplied to electrical devices.
The PWM framework provides an abstraction for providers and consumers of
PWM signals. A controller that provides one or more PWM signals is
registered as :c:type:`struct pwm_chip <pwm_chip>`. Providers
are expected to embed this structure in a driver-specific structure.
This structure contains fields that describe a particular chip.
A chip exposes one or more PWM signal sources, each of which exposed as
a :c:type:`struct pwm_device <pwm_device>`. Operations can be
performed on PWM devices to control the period, duty cycle, polarity and
active state of the signal.
Note that PWM devices are exclusive resources: they can always only be
used by one consumer at a time.
.. kernel-doc:: include/linux/pwm.h
:internal:
.. kernel-doc:: drivers/pwm/core.c
:export: