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author | Iru Cai <mytbk920423@gmail.com> | 2019-10-30 14:21:52 +0800 |
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committer | Iru Cai <mytbk920423@gmail.com> | 2019-10-30 14:48:38 +0800 |
commit | ae51f41d14f548d494ac41e0d21137c5a4c3f59c (patch) | |
tree | 6ddb9d1aaa7bd5bad5bbf8497edc2e08ff208d79 /include/pwm.h | |
download | uext4-ae51f41d14f548d494ac41e0d21137c5a4c3f59c.tar.xz |
import the U-Boot code and make it compile
Diffstat (limited to 'include/pwm.h')
-rw-r--r-- | include/pwm.h | 89 |
1 files changed, 89 insertions, 0 deletions
diff --git a/include/pwm.h b/include/pwm.h new file mode 100644 index 0000000..54ae3e6 --- /dev/null +++ b/include/pwm.h @@ -0,0 +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> + */ + +#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_ */ |