colibri_imx6: fix video stdout in default environment

[oweals/u-boot.git] / include / pwm.h

diff --git a/include/pwm.h b/include/pwm.h
index f24f2202f481a777e757fd9e8be286b4784ee627..54ae3e64c310f61026907905c3bd794a68dd48c7 100644 (file)
--- a/include/pwm.h
+++ b/include/pwm.h
@@ -1,18 +1,89 @@
+/* SPDX-License-Identifier: GPL-2.0+ */
 /*
  * header file for pwm driver.
  *
+ * Copyright 2016 Google Inc.
  * Copyright (c) 2011 samsung electronics
  * Donghwa Lee <dh09.lee@samsung.com>
- *
- * SPDX-License-Identifier:    GPL-2.0+
  */
 
 #ifndef _pwm_h_
 #define _pwm_h_
 
+/* struct pwm_ops: Operations for the PWM uclass */
+struct pwm_ops {
+       /**
+        * set_config() - Set the PWM configuration
+        *
+        * @dev:        PWM device to update
+        * @channel:    PWM channel to update
+        * @period_ns:  PWM period in nanoseconds
+        * @duty_ns:    PWM duty period in nanoseconds
+        * @return 0 if OK, -ve on error
+        */
+       int (*set_config)(struct udevice *dev, uint channel, uint period_ns,
+                         uint duty_ns);
+
+       /**
+        * set_enable() - Enable or disable the PWM
+        *
+        * @dev:        PWM device to update
+        * @channel:    PWM channel to update
+        * @enable:     true to enable, false to disable
+        * @return 0 if OK, -ve on error
+        */
+       int (*set_enable)(struct udevice *dev, uint channel, bool enable);
+       /**
+        * set_invert() - Set the PWM invert
+        *
+        * @dev:        PWM device to update
+        * @channel:    PWM channel to update
+        * @polarity:   true to invert, false to keep normal polarity
+        * @return 0 if OK, -ve on error
+        */
+       int (*set_invert)(struct udevice *dev, uint channel, bool polarity);
+};
+
+#define pwm_get_ops(dev)       ((struct pwm_ops *)(dev)->driver->ops)
+
+/**
+ * pwm_set_config() - Set the PWM configuration
+ *
+ * @dev:       PWM device to update
+ * @channel:   PWM channel to update
+ * @period_ns: PWM period in nanoseconds
+ * @duty_ns:   PWM duty period in nanoseconds
+ * @return 0 if OK, -ve on error
+ */
+int pwm_set_config(struct udevice *dev, uint channel, uint period_ns,
+                  uint duty_ns);
+
+/**
+ * pwm_set_enable() - Enable or disable the PWM
+ *
+ * @dev:       PWM device to update
+ * @channel:   PWM channel to update
+ * @enable:    true to enable, false to disable
+ * @return 0 if OK, -ve on error
+ */
+int pwm_set_enable(struct udevice *dev, uint channel, bool enable);
+
+/**
+ * pwm_set_invert() - Set pwm default polarity
+ *
+ * @dev:       PWM device to update
+ * @channel:   PWM channel to update
+ * @polarity:  true to invert, false to keep normal polarity
+ * @return 0 if OK, -ve on error
+ */
+int pwm_set_invert(struct udevice *dev, uint channel, bool polarity);
+
+/* Legacy interface */
+#ifndef CONFIG_DM_PWM
 int    pwm_init                (int pwm_id, int div, int invert);
 int    pwm_config              (int pwm_id, int duty_ns, int period_ns);
 int    pwm_enable              (int pwm_id);
 void   pwm_disable             (int pwm_id);
+#endif
 
 #endif /* _pwm_h_ */