1/* $NetBSD: amdgpu_hw_generic.c,v 1.2 2021/12/18 23:45:04 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#include <sys/cdefs.h> 29__KERNEL_RCSID(0, "$NetBSD: amdgpu_hw_generic.c,v 1.2 2021/12/18 23:45:04 riastradh Exp $"); 30 31#include <linux/slab.h> 32 33#include "dm_services.h" 34 35#include "include/gpio_interface.h" 36#include "include/gpio_types.h" 37#include "hw_gpio.h" 38#include "hw_generic.h" 39 40#include "reg_helper.h" 41#include "generic_regs.h" 42 43#undef FN 44#define FN(reg_name, field_name) \ 45 generic->shifts->field_name, generic->masks->field_name 46 47#define CTX \ 48 generic->base.base.ctx 49#define REG(reg)\ 50 (generic->regs->reg) 51 52struct gpio; 53 54static void dal_hw_generic_destruct( 55 struct hw_generic *pin) 56{ 57 dal_hw_gpio_destruct(&pin->base); 58} 59 60static void dal_hw_generic_destroy( 61 struct hw_gpio_pin **ptr) 62{ 63 struct hw_generic *generic = HW_GENERIC_FROM_BASE(*ptr); 64 65 dal_hw_generic_destruct(generic); 66 67 kfree(generic); 68 69 *ptr = NULL; 70} 71 72static enum gpio_result set_config( 73 struct hw_gpio_pin *ptr, 74 const struct gpio_config_data *config_data) 75{ 76 struct hw_generic *generic = HW_GENERIC_FROM_BASE(ptr); 77 78 if (!config_data) 79 return GPIO_RESULT_INVALID_DATA; 80 81 REG_UPDATE_2(mux, 82 GENERIC_EN, config_data->config.generic_mux.enable_output_from_mux, 83 GENERIC_SEL, config_data->config.generic_mux.mux_select); 84 85 return GPIO_RESULT_OK; 86} 87 88static const struct hw_gpio_pin_funcs funcs = { 89 .destroy = dal_hw_generic_destroy, 90 .open = dal_hw_gpio_open, 91 .get_value = dal_hw_gpio_get_value, 92 .set_value = dal_hw_gpio_set_value, 93 .set_config = set_config, 94 .change_mode = dal_hw_gpio_change_mode, 95 .close = dal_hw_gpio_close, 96}; 97 98static void dal_hw_generic_construct( 99 struct hw_generic *pin, 100 enum gpio_id id, 101 uint32_t en, 102 struct dc_context *ctx) 103{ 104 dal_hw_gpio_construct(&pin->base, id, en, ctx); 105 pin->base.base.funcs = &funcs; 106} 107 108void dal_hw_generic_init( 109 struct hw_generic **hw_generic, 110 struct dc_context *ctx, 111 enum gpio_id id, 112 uint32_t en) 113{ 114 if ((en < GPIO_DDC_LINE_MIN) || (en > GPIO_DDC_LINE_MAX)) { 115 ASSERT_CRITICAL(false); 116 *hw_generic = NULL; 117 } 118 119 *hw_generic = kzalloc(sizeof(struct hw_generic), GFP_KERNEL); 120 if (!*hw_generic) { 121 ASSERT_CRITICAL(false); 122 return; 123 } 124 125 dal_hw_generic_construct(*hw_generic, id, en, ctx); 126} 127 128 129struct hw_gpio_pin *dal_hw_generic_get_pin(struct gpio *gpio) 130{ 131 struct hw_generic *hw_generic = dal_gpio_get_generic(gpio); 132 133 return &hw_generic->base.base; 134} 135