1 /* $NetBSD: gpio_interface.h,v 1.2 2021/12/18 23:45:07 riastradh Exp $ */ 2 3 /* 4 * Copyright 2012-15 Advanced Micro Devices, Inc. 5 * 6 * Permission is hereby granted, free of charge, to any person obtaining a 7 * copy of this software and associated documentation files (the "Software"), 8 * to deal in the Software without restriction, including without limitation 9 * the rights to use, copy, modify, merge, publish, distribute, sublicense, 10 * and/or sell copies of the Software, and to permit persons to whom the 11 * Software is furnished to do so, subject to the following conditions: 12 * 13 * The above copyright notice and this permission notice shall be included in 14 * all copies or substantial portions of the Software. 15 * 16 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR 17 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, 18 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL 19 * THE COPYRIGHT HOLDER(S) OR AUTHOR(S) BE LIABLE FOR ANY CLAIM, DAMAGES OR 20 * OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, 21 * ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR 22 * OTHER DEALINGS IN THE SOFTWARE. 23 * 24 * Authors: AMD 25 * 26 */ 27 28 #ifndef __DAL_GPIO_INTERFACE_H__ 29 #define __DAL_GPIO_INTERFACE_H__ 30 31 #include "gpio_types.h" 32 #include "grph_object_defs.h" 33 34 struct gpio; 35 36 /* Open the handle for future use */ 37 enum gpio_result dal_gpio_open( 38 struct gpio *gpio, 39 enum gpio_mode mode); 40 41 enum gpio_result dal_gpio_open_ex( 42 struct gpio *gpio, 43 enum gpio_mode mode); 44 45 /* Get high or low from the pin */ 46 enum gpio_result dal_gpio_get_value( 47 const struct gpio *gpio, 48 uint32_t *value); 49 50 /* Set pin high or low */ 51 enum gpio_result dal_gpio_set_value( 52 const struct gpio *gpio, 53 uint32_t value); 54 55 /* Get current mode */ 56 enum gpio_mode dal_gpio_get_mode( 57 const struct gpio *gpio); 58 59 /* Change mode of the handle */ 60 enum gpio_result dal_gpio_change_mode( 61 struct gpio *gpio, 62 enum gpio_mode mode); 63 64 /* Lock Pin */ 65 enum gpio_result dal_gpio_lock_pin( 66 struct gpio *gpio); 67 68 /* Unlock Pin */ 69 enum gpio_result dal_gpio_unlock_pin( 70 struct gpio *gpio); 71 72 /* Get the GPIO id */ 73 enum gpio_id dal_gpio_get_id( 74 const struct gpio *gpio); 75 76 /* Get the GPIO enum */ 77 uint32_t dal_gpio_get_enum( 78 const struct gpio *gpio); 79 80 /* Set the GPIO pin configuration */ 81 enum gpio_result dal_gpio_set_config( 82 struct gpio *gpio, 83 const struct gpio_config_data *config_data); 84 85 /* Obtain GPIO pin info */ 86 enum gpio_result dal_gpio_get_pin_info( 87 const struct gpio *gpio, 88 struct gpio_pin_info *pin_info); 89 90 /* Obtain GPIO sync source */ 91 enum sync_source dal_gpio_get_sync_source( 92 const struct gpio *gpio); 93 94 /* Obtain GPIO pin output state (active low or active high) */ 95 enum gpio_pin_output_state dal_gpio_get_output_state( 96 const struct gpio *gpio); 97 98 struct hw_ddc *dal_gpio_get_ddc(struct gpio *gpio); 99 100 struct hw_hpd *dal_gpio_get_hpd(struct gpio *gpio); 101 102 struct hw_generic *dal_gpio_get_generic(struct gpio *gpio); 103 104 /* Close the handle */ 105 void dal_gpio_close( 106 struct gpio *gpio); 107 108 109 110 111 #endif 112