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1/*2 * Copyright 2012-15 Advanced Micro Devices, Inc.3 *4 * Permission is hereby granted, free of charge, to any person obtaining a5 * copy of this software and associated documentation files (the "Software"),6 * to deal in the Software without restriction, including without limitation7 * the rights to use, copy, modify, merge, publish, distribute, sublicense,8 * and/or sell copies of the Software, and to permit persons to whom the9 * Software is furnished to do so, subject to the following conditions:10 *11 * The above copyright notice and this permission notice shall be included in12 * all copies or substantial portions of the Software.13 *14 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR15 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,16 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL17 * THE COPYRIGHT HOLDER(S) OR AUTHOR(S) BE LIABLE FOR ANY CLAIM, DAMAGES OR18 * 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 OR20 * OTHER DEALINGS IN THE SOFTWARE.21 *22 * Authors: AMD23 *24 */25 26#ifndef __DAL_HW_GPIO_H__27#define __DAL_HW_GPIO_H__28 29#include "gpio_regs.h"30 31#define FROM_HW_GPIO_PIN(ptr) \32 container_of((ptr), struct hw_gpio, base)33 34struct addr_mask {35 uint32_t addr;36 uint32_t mask;37};38 39struct hw_gpio_pin {40 const struct hw_gpio_pin_funcs *funcs;41 enum gpio_id id;42 uint32_t en;43 enum gpio_mode mode;44 bool opened;45 struct dc_context *ctx;46};47 48struct hw_gpio_pin_funcs {49 void (*destroy)(50 struct hw_gpio_pin **ptr);51 bool (*open)(52 struct hw_gpio_pin *pin,53 enum gpio_mode mode);54 enum gpio_result (*get_value)(55 const struct hw_gpio_pin *pin,56 uint32_t *value);57 enum gpio_result (*set_value)(58 const struct hw_gpio_pin *pin,59 uint32_t value);60 enum gpio_result (*set_config)(61 struct hw_gpio_pin *pin,62 const struct gpio_config_data *config_data);63 enum gpio_result (*change_mode)(64 struct hw_gpio_pin *pin,65 enum gpio_mode mode);66 void (*close)(67 struct hw_gpio_pin *pin);68};69 70 71struct hw_gpio;72 73/* Register indices are represented by member variables74 * and are to be filled in by constructors of derived classes.75 * These members permit the use of common code76 * for programming registers, where the sequence is the same77 * but register sets are different.78 * Some GPIOs have HW mux which allows to choose79 * what is the source of the signal in HW mode */80 81struct hw_gpio_pin_reg {82 struct addr_mask DC_GPIO_DATA_MASK;83 struct addr_mask DC_GPIO_DATA_A;84 struct addr_mask DC_GPIO_DATA_EN;85 struct addr_mask DC_GPIO_DATA_Y;86};87 88struct hw_gpio_mux_reg {89 struct addr_mask GPIO_MUX_CONTROL;90 struct addr_mask GPIO_MUX_STEREO_SEL;91};92 93struct hw_gpio {94 struct hw_gpio_pin base;95 96 /* variables to save register value */97 struct {98 uint32_t mask;99 uint32_t a;100 uint32_t en;101 uint32_t mux;102 } store;103 104 /* GPIO MUX support */105 bool mux_supported;106 const struct gpio_registers *regs;107};108 109#define HW_GPIO_FROM_BASE(hw_gpio_pin) \110 container_of((hw_gpio_pin), struct hw_gpio, base)111 112void dal_hw_gpio_construct(113 struct hw_gpio *pin,114 enum gpio_id id,115 uint32_t en,116 struct dc_context *ctx);117 118bool dal_hw_gpio_open(119 struct hw_gpio_pin *pin,120 enum gpio_mode mode);121 122enum gpio_result dal_hw_gpio_get_value(123 const struct hw_gpio_pin *pin,124 uint32_t *value);125 126enum gpio_result dal_hw_gpio_config_mode(127 struct hw_gpio *pin,128 enum gpio_mode mode);129 130void dal_hw_gpio_destruct(131 struct hw_gpio *pin);132 133enum gpio_result dal_hw_gpio_set_value(134 const struct hw_gpio_pin *ptr,135 uint32_t value);136 137enum gpio_result dal_hw_gpio_change_mode(138 struct hw_gpio_pin *ptr,139 enum gpio_mode mode);140 141void dal_hw_gpio_close(142 struct hw_gpio_pin *ptr);143 144#endif145