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include/pwm.h
2.35 KB
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/* * header file for pwm driver. * |
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* Copyright 2016 Google Inc. |
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* Copyright (c) 2011 samsung electronics * Donghwa Lee <dh09.lee@samsung.com> * |
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* SPDX-License-Identifier: GPL-2.0+ |
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*/ #ifndef _pwm_h_ #define _pwm_h_ |
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/* 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); |
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/** * 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); |
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}; #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); |
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/** * 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); |
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/* Legacy interface */ #ifndef CONFIG_DM_PWM |
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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); |
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#endif |
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#endif /* _pwm_h_ */ |