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_dce80.h" 41 42 /* 43 * Post-requisites: headers required by this unit 44 */ 45 46 #include "dce/dce_8_0_d.h" 47 #include "dce/dce_8_0_sh_mask.h" 48 49 /* 50 * This unit 51 */ 52 53 static const uint32_t ddc_hw_status_addr[] = { 54 mmDC_I2C_DDC1_HW_STATUS, 55 mmDC_I2C_DDC2_HW_STATUS, 56 mmDC_I2C_DDC3_HW_STATUS, 57 mmDC_I2C_DDC4_HW_STATUS, 58 mmDC_I2C_DDC5_HW_STATUS, 59 mmDC_I2C_DDC6_HW_STATUS, 60 mmDC_I2C_DDCVGA_HW_STATUS 61 }; 62 63 /* 64 * @brief 65 * Cast 'struct i2c_sw_engine *' 66 * to 'struct i2c_sw_engine_dce80 *' 67 */ 68 #define FROM_I2C_SW_ENGINE(ptr) \ 69 container_of((ptr), struct i2c_sw_engine_dce80, base) 70 71 /* 72 * @brief 73 * Cast 'struct i2c_engine *' 74 * to 'struct i2c_sw_engine_dce80 *' 75 */ 76 #define FROM_I2C_ENGINE(ptr) \ 77 FROM_I2C_SW_ENGINE(container_of((ptr), struct i2c_sw_engine, base)) 78 79 /* 80 * @brief 81 * Cast 'struct engine *' 82 * to 'struct i2c_sw_engine_dce80 *' 83 */ 84 #define FROM_ENGINE(ptr) \ 85 FROM_I2C_ENGINE(container_of((ptr), struct i2c_engine, base)) 86 87 static void release_engine( 88 struct engine *engine) 89 { 90 91 } 92 93 static void destruct( 94 struct i2c_sw_engine_dce80 *engine) 95 { 96 dal_i2c_sw_engine_destruct(&engine->base); 97 } 98 99 static void destroy( 100 struct i2c_engine **engine) 101 { 102 struct i2c_sw_engine_dce80 *sw_engine = FROM_I2C_ENGINE(*engine); 103 104 destruct(sw_engine); 105 106 kfree(sw_engine); 107 108 *engine = NULL; 109 } 110 111 static bool acquire_engine( 112 struct i2c_engine *engine, 113 struct ddc *ddc_handle) 114 { 115 return dal_i2caux_i2c_sw_engine_acquire_engine(engine, ddc_handle); 116 } 117 118 static const struct i2c_engine_funcs i2c_engine_funcs = { 119 .acquire_engine = acquire_engine, 120 .destroy = destroy, 121 .get_speed = dal_i2c_sw_engine_get_speed, 122 .set_speed = dal_i2c_sw_engine_set_speed, 123 .setup_engine = dal_i2c_engine_setup_i2c_engine, 124 .submit_channel_request = dal_i2c_sw_engine_submit_channel_request, 125 .process_channel_reply = dal_i2c_engine_process_channel_reply, 126 .get_channel_status = dal_i2c_sw_engine_get_channel_status, 127 }; 128 129 static const struct engine_funcs engine_funcs = { 130 .release_engine = release_engine, 131 .get_engine_type = dal_i2c_sw_engine_get_engine_type, 132 .acquire = dal_i2c_engine_acquire, 133 .submit_request = dal_i2c_sw_engine_submit_request, 134 }; 135 136 static void construct( 137 struct i2c_sw_engine_dce80 *engine, 138 const struct i2c_sw_engine_dce80_create_arg *arg) 139 { 140 struct i2c_sw_engine_create_arg arg_base; 141 142 arg_base.ctx = arg->ctx; 143 arg_base.default_speed = arg->default_speed; 144 145 dal_i2c_sw_engine_construct(&engine->base, &arg_base); 146 147 engine->base.base.base.funcs = &engine_funcs; 148 engine->base.base.funcs = &i2c_engine_funcs; 149 engine->base.default_speed = arg->default_speed; 150 engine->engine_id = arg->engine_id; 151 } 152 153 struct i2c_engine *dal_i2c_sw_engine_dce80_create( 154 const struct i2c_sw_engine_dce80_create_arg *arg) 155 { 156 struct i2c_sw_engine_dce80 *engine; 157 158 if (!arg) { 159 BREAK_TO_DEBUGGER(); 160 return NULL; 161 } 162 163 engine = kzalloc(sizeof(struct i2c_sw_engine_dce80), GFP_KERNEL); 164 165 if (!engine) { 166 BREAK_TO_DEBUGGER(); 167 return NULL; 168 } 169 170 construct(engine, arg); 171 return &engine->base.base; 172 } 173 174