mirror of https://github.com/Qortal/Brooklyn
You can not select more than 25 topics
Topics must start with a letter or number, can include dashes ('-') and can be up to 35 characters long.
49 lines
1.3 KiB
49 lines
1.3 KiB
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:
|
|
|