mirror of
https://github.com/AsahiLinux/u-boot
synced 2024-11-29 08:01:08 +00:00
fc760cb8c4
Add a uclass that supports Pulse Width Modulation (PWM) devices. It provides methods to enable/disable and configure the device. Signed-off-by: Simon Glass <sjg@chromium.org>
36 lines
684 B
C
36 lines
684 B
C
/*
|
|
* Copyright (c) 2016 Google, Inc
|
|
* Written by Simon Glass <sjg@chromium.org>
|
|
*
|
|
* SPDX-License-Identifier: GPL-2.0+
|
|
*/
|
|
|
|
#include <common.h>
|
|
#include <dm.h>
|
|
#include <pwm.h>
|
|
|
|
int pwm_set_config(struct udevice *dev, uint channel, uint period_ns,
|
|
uint duty_ns)
|
|
{
|
|
struct pwm_ops *ops = pwm_get_ops(dev);
|
|
|
|
if (!ops->set_config)
|
|
return -ENOSYS;
|
|
|
|
return ops->set_config(dev, channel, period_ns, duty_ns);
|
|
}
|
|
|
|
int pwm_set_enable(struct udevice *dev, uint channel, bool enable)
|
|
{
|
|
struct pwm_ops *ops = pwm_get_ops(dev);
|
|
|
|
if (!ops->set_enable)
|
|
return -ENOSYS;
|
|
|
|
return ops->set_enable(dev, channel, enable);
|
|
}
|
|
|
|
UCLASS_DRIVER(pwm) = {
|
|
.id = UCLASS_PWM,
|
|
.name = "pwm",
|
|
};
|