]> git.sur5r.net Git - u-boot/blob - drivers/pwm/pwm-uclass.c
power: regulator: pwm: support pwm polarity setting
[u-boot] / drivers / pwm / pwm-uclass.c
1 /*
2  * Copyright (c) 2016 Google, Inc
3  * Written by Simon Glass <sjg@chromium.org>
4  *
5  * SPDX-License-Identifier:     GPL-2.0+
6  */
7
8 #include <common.h>
9 #include <dm.h>
10 #include <pwm.h>
11
12 int pwm_set_invert(struct udevice *dev, uint channel, bool polarity)
13 {
14         struct pwm_ops *ops = pwm_get_ops(dev);
15
16         if (!ops->set_invert)
17                 return -ENOSYS;
18
19         return ops->set_invert(dev, channel, polarity);
20 }
21
22 int pwm_set_config(struct udevice *dev, uint channel, uint period_ns,
23                    uint duty_ns)
24 {
25         struct pwm_ops *ops = pwm_get_ops(dev);
26
27         if (!ops->set_config)
28                 return -ENOSYS;
29
30         return ops->set_config(dev, channel, period_ns, duty_ns);
31 }
32
33 int pwm_set_enable(struct udevice *dev, uint channel, bool enable)
34 {
35         struct pwm_ops *ops = pwm_get_ops(dev);
36
37         if (!ops->set_enable)
38                 return -ENOSYS;
39
40         return ops->set_enable(dev, channel, enable);
41 }
42
43 UCLASS_DRIVER(pwm) = {
44         .id             = UCLASS_PWM,
45         .name           = "pwm",
46 };