61 lines
2.0 KiB
C
61 lines
2.0 KiB
C
/*
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* Generic GPIO ops
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*
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* Copyright (C) 2019 - 2020 Andy Green <andy@warmcat.com>
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*
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* Permission is hereby granted, free of charge, to any person obtaining a copy
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* of this software and associated documentation files (the "Software"), to
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* deal in the Software without restriction, including without limitation the
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* rights to use, copy, modify, merge, publish, distribute, sublicense, and/or
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* sell copies of the Software, and to permit persons to whom the Software is
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* furnished to do so, subject to the following conditions:
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*
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* The above copyright notice and this permission notice shall be included in
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* all copies or substantial portions of the Software.
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*
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* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
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* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
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* AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
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* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
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* FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS
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* IN THE SOFTWARE.
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*
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* This is like an abstract class for gpio, a real implementation provides
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* functions for the ops that use the underlying OS gpio arrangements.
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*/
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#if !defined(__LWS_GPIO_H__)
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#define __LWS_GPIO_H__
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typedef int _lws_plat_gpio_t;
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typedef enum {
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LWSGGPIO_IRQ_NONE,
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LWSGGPIO_IRQ_RISING,
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LWSGGPIO_IRQ_FALLING,
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LWSGGPIO_IRQ_CHANGE,
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LWSGGPIO_IRQ_LOW,
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LWSGGPIO_IRQ_HIGH
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} lws_gpio_irq_t;
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enum {
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LWSGGPIO_FL_READ = (1 << 0),
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LWSGGPIO_FL_WRITE = (1 << 1),
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LWSGGPIO_FL_PULLUP = (1 << 2),
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LWSGGPIO_FL_PULLDOWN = (1 << 3),
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LWSGGPIO_FL_START_LOW = (1 << 4),
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};
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typedef void (*lws_gpio_irq_cb_t)(void *arg);
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typedef struct lws_gpio_ops {
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void (*mode)(_lws_plat_gpio_t gpio, int flags);
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int (*read)(_lws_plat_gpio_t gpio);
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void (*set)(_lws_plat_gpio_t gpio, int val);
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int (*irq_mode)(_lws_plat_gpio_t gpio, lws_gpio_irq_t irq,
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lws_gpio_irq_cb_t cb, void *arg);
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} lws_gpio_ops_t;
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#endif
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