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