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 };