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 #include "include/irq_service_interface.h" 29 #include "include/logger_interface.h" 30 31 #include "dce110/irq_service_dce110.h" 32 33 #if defined(CONFIG_DRM_AMD_DC_SI) 34 #include "dce60/irq_service_dce60.h" 35 #endif 36 37 #include "dce80/irq_service_dce80.h" 38 #include "dce120/irq_service_dce120.h" 39 #include "dcn10/irq_service_dcn10.h" 40 41 #include "reg_helper.h" 42 #include "irq_service.h" 43 44 //HPD0_DC_HPD_INT_STATUS 45 #define HPD0_DC_HPD_INT_STATUS__DC_HPD_SENSE_DELAYED_MASK 0x00000010L 46 #define HPD0_DC_HPD_INT_CONTROL__DC_HPD_INT_POLARITY_MASK 0x00000100L 47 #define HPD0_DC_HPD_INT_STATUS__DC_HPD_SENSE_DELAYED__SHIFT 0x4 48 #define HPD0_DC_HPD_INT_CONTROL__DC_HPD_INT_POLARITY__SHIFT 0x8 49 //HPD1_DC_HPD_INT_STATUS 50 #define DC_HPD1_INT_STATUS__DC_HPD1_SENSE_DELAYED_MASK 0x10 51 #define DC_HPD1_INT_STATUS__DC_HPD1_SENSE_DELAYED__SHIFT 0x4 52 #define DC_HPD1_INT_CONTROL__DC_HPD1_INT_POLARITY_MASK 0x100 53 #define DC_HPD1_INT_CONTROL__DC_HPD1_INT_POLARITY__SHIFT 0x8 54 55 56 #define CTX \ 57 irq_service->ctx 58 #define DC_LOGGER \ 59 irq_service->ctx->logger 60 61 void dal_irq_service_construct( 62 struct irq_service *irq_service, 63 struct irq_service_init_data *init_data) 64 { 65 if (!init_data || !init_data->ctx) { 66 BREAK_TO_DEBUGGER(); 67 return; 68 } 69 70 irq_service->ctx = init_data->ctx; 71 } 72 73 void dal_irq_service_destroy(struct irq_service **irq_service) 74 { 75 if (!irq_service || !*irq_service) { 76 BREAK_TO_DEBUGGER(); 77 return; 78 } 79 80 kfree(*irq_service); 81 82 *irq_service = NULL; 83 } 84 85 static const struct irq_source_info *find_irq_source_info( 86 struct irq_service *irq_service, 87 enum dc_irq_source source) 88 { 89 if (source >= DAL_IRQ_SOURCES_NUMBER) 90 return NULL; 91 92 return &irq_service->info[source]; 93 } 94 95 void dal_irq_service_set_generic( 96 struct irq_service *irq_service, 97 const struct irq_source_info *info, 98 bool enable) 99 { 100 uint32_t addr = info->enable_reg; 101 uint32_t value = dm_read_reg(irq_service->ctx, addr); 102 103 value = (value & ~info->enable_mask) | 104 (info->enable_value[enable ? 0 : 1] & info->enable_mask); 105 dm_write_reg(irq_service->ctx, addr, value); 106 } 107 108 bool dal_irq_service_set( 109 struct irq_service *irq_service, 110 enum dc_irq_source source, 111 bool enable) 112 { 113 const struct irq_source_info *info = 114 find_irq_source_info(irq_service, source); 115 116 if (!info) { 117 DC_LOG_ERROR("%s: cannot find irq info table entry for %d\n", 118 __func__, 119 source); 120 return false; 121 } 122 123 dal_irq_service_ack(irq_service, source); 124 125 if (info->funcs && info->funcs->set) { 126 if (info->funcs->set == dal_irq_service_dummy_set) { 127 DC_LOG_WARNING("%s: src: %d, st: %d\n", __func__, 128 source, enable); 129 ASSERT(0); 130 } 131 132 return info->funcs->set(irq_service, info, enable); 133 } 134 135 dal_irq_service_set_generic(irq_service, info, enable); 136 137 return true; 138 } 139 140 void dal_irq_service_ack_generic( 141 struct irq_service *irq_service, 142 const struct irq_source_info *info) 143 { 144 uint32_t addr = info->ack_reg; 145 uint32_t value = dm_read_reg(irq_service->ctx, addr); 146 147 value = (value & ~info->ack_mask) | 148 (info->ack_value & info->ack_mask); 149 dm_write_reg(irq_service->ctx, addr, value); 150 } 151 152 bool dal_irq_service_ack( 153 struct irq_service *irq_service, 154 enum dc_irq_source source) 155 { 156 const struct irq_source_info *info = 157 find_irq_source_info(irq_service, source); 158 159 if (!info) { 160 DC_LOG_ERROR("%s: cannot find irq info table entry for %d\n", 161 __func__, 162 source); 163 return false; 164 } 165 166 if (info->funcs && info->funcs->ack) { 167 if (info->funcs->ack == dal_irq_service_dummy_ack) { 168 DC_LOG_WARNING("%s: src: %d\n", __func__, source); 169 ASSERT(0); 170 } 171 172 return info->funcs->ack(irq_service, info); 173 } 174 175 dal_irq_service_ack_generic(irq_service, info); 176 177 return true; 178 } 179 180 enum dc_irq_source dal_irq_service_to_irq_source( 181 struct irq_service *irq_service, 182 uint32_t src_id, 183 uint32_t ext_id) 184 { 185 return irq_service->funcs->to_dal_irq_source( 186 irq_service, 187 src_id, 188 ext_id); 189 } 190 191 bool hpd0_ack( 192 struct irq_service *irq_service, 193 const struct irq_source_info *info) 194 { 195 uint32_t addr = info->status_reg; 196 uint32_t value = dm_read_reg(irq_service->ctx, addr); 197 uint32_t current_status = 198 get_reg_field_value( 199 value, 200 HPD0_DC_HPD_INT_STATUS, 201 DC_HPD_SENSE_DELAYED); 202 203 dal_irq_service_ack_generic(irq_service, info); 204 205 value = dm_read_reg(irq_service->ctx, info->enable_reg); 206 207 set_reg_field_value( 208 value, 209 current_status ? 0 : 1, 210 HPD0_DC_HPD_INT_CONTROL, 211 DC_HPD_INT_POLARITY); 212 213 dm_write_reg(irq_service->ctx, info->enable_reg, value); 214 215 return true; 216 } 217 218 bool hpd1_ack( 219 struct irq_service *irq_service, 220 const struct irq_source_info *info) 221 { 222 uint32_t addr = info->status_reg; 223 uint32_t value = dm_read_reg(irq_service->ctx, addr); 224 uint32_t current_status = 225 get_reg_field_value( 226 value, 227 DC_HPD1_INT_STATUS, 228 DC_HPD1_SENSE_DELAYED); 229 230 dal_irq_service_ack_generic(irq_service, info); 231 232 value = dm_read_reg(irq_service->ctx, info->enable_reg); 233 234 set_reg_field_value( 235 value, 236 current_status ? 0 : 1, 237 DC_HPD1_INT_CONTROL, 238 DC_HPD1_INT_POLARITY); 239 240 dm_write_reg(irq_service->ctx, info->enable_reg, value); 241 242 return true; 243 } 244