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