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 #include "dm_services.h" 27 28 /* 29 * Pre-requisites: headers required by header of this unit 30 */ 31 #include "include/i2caux_interface.h" 32 #include "../engine.h" 33 #include "../i2c_engine.h" 34 #include "../i2c_sw_engine.h" 35 36 /* 37 * Header of this unit 38 */ 39 40 #include "i2c_sw_engine_dce110.h" 41 42 /* 43 * Post-requisites: headers required by this unit 44 */ 45 46 /* 47 * This unit 48 */ 49 50 /* 51 * @brief 52 * Cast 'struct i2c_sw_engine *' 53 * to 'struct i2c_sw_engine_dce110 *' 54 */ 55 #define FROM_I2C_SW_ENGINE(ptr) \ 56 container_of((ptr), struct i2c_sw_engine_dce110, base) 57 /* 58 * @brief 59 * Cast 'struct i2c_engine *' 60 * to 'struct i2c_sw_engine_dce80 *' 61 */ 62 #define FROM_I2C_ENGINE(ptr) \ 63 FROM_I2C_SW_ENGINE(container_of((ptr), struct i2c_sw_engine, base)) 64 65 /* 66 * @brief 67 * Cast 'struct engine *' 68 * to 'struct i2c_sw_engine_dce80 *' 69 */ 70 #define FROM_ENGINE(ptr) \ 71 FROM_I2C_ENGINE(container_of((ptr), struct i2c_engine, base)) 72 73 static void release_engine( 74 struct engine *engine) 75 { 76 } 77 78 static void destruct( 79 struct i2c_sw_engine_dce110 *engine) 80 { 81 dal_i2c_sw_engine_destruct(&engine->base); 82 } 83 84 static void destroy( 85 struct i2c_engine **engine) 86 { 87 struct i2c_sw_engine_dce110 *sw_engine = FROM_I2C_ENGINE(*engine); 88 89 destruct(sw_engine); 90 91 kfree(sw_engine); 92 93 *engine = NULL; 94 } 95 96 static bool acquire_engine( 97 struct i2c_engine *engine, 98 struct ddc *ddc_handle) 99 { 100 return dal_i2caux_i2c_sw_engine_acquire_engine(engine, ddc_handle); 101 } 102 103 static const struct i2c_engine_funcs i2c_engine_funcs = { 104 .acquire_engine = acquire_engine, 105 .destroy = destroy, 106 .get_speed = dal_i2c_sw_engine_get_speed, 107 .set_speed = dal_i2c_sw_engine_set_speed, 108 .setup_engine = dal_i2c_engine_setup_i2c_engine, 109 .submit_channel_request = dal_i2c_sw_engine_submit_channel_request, 110 .process_channel_reply = dal_i2c_engine_process_channel_reply, 111 .get_channel_status = dal_i2c_sw_engine_get_channel_status, 112 }; 113 114 static const struct engine_funcs engine_funcs = { 115 .release_engine = release_engine, 116 .get_engine_type = dal_i2c_sw_engine_get_engine_type, 117 .acquire = dal_i2c_engine_acquire, 118 .submit_request = dal_i2c_sw_engine_submit_request, 119 }; 120 121 static void construct( 122 struct i2c_sw_engine_dce110 *engine_dce110, 123 const struct i2c_sw_engine_dce110_create_arg *arg_dce110) 124 { 125 struct i2c_sw_engine_create_arg arg_base; 126 127 arg_base.ctx = arg_dce110->ctx; 128 arg_base.default_speed = arg_dce110->default_speed; 129 130 dal_i2c_sw_engine_construct(&engine_dce110->base, &arg_base); 131 132 /*struct engine struct engine_funcs*/ 133 engine_dce110->base.base.base.funcs = &engine_funcs; 134 /*struct i2c_engine struct i2c_engine_funcs*/ 135 engine_dce110->base.base.funcs = &i2c_engine_funcs; 136 engine_dce110->base.default_speed = arg_dce110->default_speed; 137 engine_dce110->engine_id = arg_dce110->engine_id; 138 } 139 140 struct i2c_engine *dal_i2c_sw_engine_dce110_create( 141 const struct i2c_sw_engine_dce110_create_arg *arg) 142 { 143 struct i2c_sw_engine_dce110 *engine_dce110; 144 145 if (!arg) { 146 ASSERT_CRITICAL(false); 147 return NULL; 148 } 149 150 engine_dce110 = kzalloc(sizeof(struct i2c_sw_engine_dce110), 151 GFP_KERNEL); 152 153 if (!engine_dce110) { 154 ASSERT_CRITICAL(false); 155 return NULL; 156 } 157 158 construct(engine_dce110, arg); 159 return &engine_dce110->base.base; 160 } 161