X-Git-Url: http://review.tizen.org/git/?a=blobdiff_plain;ds=sidebyside;f=include%2Fpwm.h;h=54ae3e64c310f61026907905c3bd794a68dd48c7;hb=2493ce6258a59881b702cbe255db9e53f1e3fd13;hp=13acf85933b3afab39f20e04a5520077864f598b;hpb=c04bf5e9a45d7335681352faa125193258f8e976;p=platform%2Fkernel%2Fu-boot.git diff --git a/include/pwm.h b/include/pwm.h index 13acf85..54ae3e6 100644 --- a/include/pwm.h +++ b/include/pwm.h @@ -1,31 +1,89 @@ +/* SPDX-License-Identifier: GPL-2.0+ */ /* * header file for pwm driver. * + * Copyright 2016 Google Inc. * Copyright (c) 2011 samsung electronics * Donghwa Lee - * - * This program is free software; you can redistribute it and/or - * modify it under the terms of the GNU General Public License as - * published by the Free Software Foundation; either version 2 of - * the License, or (at your option) any later version. - * - * This program is distributed in the hope that it will be useful, - * but WITHOUT ANY WARRANTY; without even the implied warranty of - * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the - * GNU General Public License for more details. - * - * You should have received a copy of the GNU General Public License - * along with this program; if not, write to the Free Software - * Foundation, Inc., 59 Temple Place, Suite 330, Boston, - * MA 02111-1307 USA */ #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_ */