'\" t
.\"     Title: pwm_set_relative_duty_cycle
.\"    Author: [FIXME: author] [see http://docbook.sf.net/el/author]
.\" Generator: DocBook XSL Stylesheets v1.79.1 <http://docbook.sf.net/>
.\"      Date: January 2017
.\"    Manual: Pulse-Width Modulation (PWM)
.\"    Source: Kernel Hackers Manual 4.8.15
.\"  Language: English
.\"
.TH "PWM_SET_RELATIVE_DUT" "9" "January 2017" "Kernel Hackers Manual 4\&.8\&." "Pulse-Width Modulation (PWM)"
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.SH "NAME"
pwm_set_relative_duty_cycle \- Set a relative duty cycle value
.SH "SYNOPSIS"
.HP \w'int\ pwm_set_relative_duty_cycle('u
.BI "int pwm_set_relative_duty_cycle(struct\ pwm_state\ *\ " "state" ", unsigned\ int\ " "duty_cycle" ", unsigned\ int\ " "scale" ");"
.SH "ARGUMENTS"
.PP
\fIstate\fR
.RS 4
PWM state to fill
.RE
.PP
\fIduty_cycle\fR
.RS 4
relative duty cycle value
.RE
.PP
\fIscale\fR
.RS 4
scale in which
\fIduty_cycle\fR
is expressed
.RE
.SH "DESCRIPTION"
.PP
This functions converts a relative into an absolute duty cycle (expressed in nanoseconds), and puts the result in state\->duty_cycle\&.
.PP
For example if you want to configure a 50% duty cycle, call:
.PP
pwm_init_state(pwm,
state); pwm_set_relative_duty_cycle(state, 50, 100); pwm_apply_state(pwm,
state);
.PP
This functions returns \-EINVAL if
\fIduty_cycle\fR
and/or
\fIscale\fR
are inconsistent (\fIscale\fR
== 0 or
\fIduty_cycle\fR
>
\fIscale\fR)\&.
.SH "COPYRIGHT"
.br