1 /* 2 * Copyright 2015 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 <linux/mm.h> 27 28 /* DC interface (public) */ 29 #include "dm_services.h" 30 #include "dc.h" 31 32 /* DC core (private) */ 33 #include "core_types.h" 34 #include "transform.h" 35 #include "dpp.h" 36 37 /******************************************************************************* 38 * Private functions 39 ******************************************************************************/ 40 static void dc_plane_construct(struct dc_context *ctx, struct dc_plane_state *plane_state) 41 { 42 plane_state->ctx = ctx; 43 44 plane_state->gamma_correction = dc_create_gamma(); 45 if (plane_state->gamma_correction != NULL) 46 plane_state->gamma_correction->is_identity = true; 47 48 plane_state->in_transfer_func = dc_create_transfer_func(); 49 if (plane_state->in_transfer_func != NULL) { 50 plane_state->in_transfer_func->type = TF_TYPE_BYPASS; 51 } 52 plane_state->in_shaper_func = dc_create_transfer_func(); 53 if (plane_state->in_shaper_func != NULL) { 54 plane_state->in_shaper_func->type = TF_TYPE_BYPASS; 55 } 56 57 plane_state->lut3d_func = dc_create_3dlut_func(); 58 59 plane_state->blend_tf = dc_create_transfer_func(); 60 if (plane_state->blend_tf != NULL) { 61 plane_state->blend_tf->type = TF_TYPE_BYPASS; 62 } 63 64 plane_state->pre_multiplied_alpha = true; 65 66 } 67 68 static void dc_plane_destruct(struct dc_plane_state *plane_state) 69 { 70 if (plane_state->gamma_correction != NULL) { 71 dc_gamma_release(&plane_state->gamma_correction); 72 } 73 if (plane_state->in_transfer_func != NULL) { 74 dc_transfer_func_release( 75 plane_state->in_transfer_func); 76 plane_state->in_transfer_func = NULL; 77 } 78 if (plane_state->in_shaper_func != NULL) { 79 dc_transfer_func_release( 80 plane_state->in_shaper_func); 81 plane_state->in_shaper_func = NULL; 82 } 83 if (plane_state->lut3d_func != NULL) { 84 dc_3dlut_func_release( 85 plane_state->lut3d_func); 86 plane_state->lut3d_func = NULL; 87 } 88 if (plane_state->blend_tf != NULL) { 89 dc_transfer_func_release( 90 plane_state->blend_tf); 91 plane_state->blend_tf = NULL; 92 } 93 94 } 95 96 /******************************************************************************* 97 * Public functions 98 ******************************************************************************/ 99 void enable_surface_flip_reporting(struct dc_plane_state *plane_state, 100 uint32_t controller_id) 101 { 102 plane_state->irq_source = controller_id + DC_IRQ_SOURCE_PFLIP1 - 1; 103 /*register_flip_interrupt(surface);*/ 104 } 105 106 struct dc_plane_state *dc_create_plane_state(struct dc *dc) 107 { 108 struct dc_plane_state *plane_state = kvzalloc(sizeof(*plane_state), 109 GFP_KERNEL); 110 111 if (NULL == plane_state) 112 return NULL; 113 114 kref_init(&plane_state->refcount); 115 dc_plane_construct(dc->ctx, plane_state); 116 117 return plane_state; 118 } 119 120 /* 121 ***************************************************************************** 122 * Function: dc_plane_get_status 123 * 124 * @brief 125 * Looks up the pipe context of plane_state and updates the pending status 126 * of the pipe context. Then returns plane_state->status 127 * 128 * @param [in] plane_state: pointer to the plane_state to get the status of 129 ***************************************************************************** 130 */ 131 const struct dc_plane_status *dc_plane_get_status( 132 const struct dc_plane_state *plane_state) 133 { 134 const struct dc_plane_status *plane_status; 135 struct dc *dc; 136 int i; 137 138 if (!plane_state || 139 !plane_state->ctx || 140 !plane_state->ctx->dc) { 141 ASSERT(0); 142 return NULL; /* remove this if above assert never hit */ 143 } 144 145 plane_status = &plane_state->status; 146 dc = plane_state->ctx->dc; 147 148 if (dc->current_state == NULL) 149 return NULL; 150 151 /* Find the current plane state and set its pending bit to false */ 152 for (i = 0; i < dc->res_pool->pipe_count; i++) { 153 struct pipe_ctx *pipe_ctx = 154 &dc->current_state->res_ctx.pipe_ctx[i]; 155 156 if (pipe_ctx->plane_state != plane_state) 157 continue; 158 159 pipe_ctx->plane_state->status.is_flip_pending = false; 160 161 break; 162 } 163 164 for (i = 0; i < dc->res_pool->pipe_count; i++) { 165 struct pipe_ctx *pipe_ctx = 166 &dc->current_state->res_ctx.pipe_ctx[i]; 167 168 if (pipe_ctx->plane_state != plane_state) 169 continue; 170 171 dc->hwss.update_pending_status(pipe_ctx); 172 } 173 174 return plane_status; 175 } 176 177 void dc_plane_state_retain(struct dc_plane_state *plane_state) 178 { 179 kref_get(&plane_state->refcount); 180 } 181 182 static void dc_plane_state_free(struct kref *kref) 183 { 184 struct dc_plane_state *plane_state = container_of(kref, struct dc_plane_state, refcount); 185 dc_plane_destruct(plane_state); 186 kvfree(plane_state); 187 } 188 189 void dc_plane_state_release(struct dc_plane_state *plane_state) 190 { 191 kref_put(&plane_state->refcount, dc_plane_state_free); 192 } 193 194 void dc_gamma_retain(struct dc_gamma *gamma) 195 { 196 kref_get(&gamma->refcount); 197 } 198 199 static void dc_gamma_free(struct kref *kref) 200 { 201 struct dc_gamma *gamma = container_of(kref, struct dc_gamma, refcount); 202 kvfree(gamma); 203 } 204 205 void dc_gamma_release(struct dc_gamma **gamma) 206 { 207 kref_put(&(*gamma)->refcount, dc_gamma_free); 208 *gamma = NULL; 209 } 210 211 struct dc_gamma *dc_create_gamma(void) 212 { 213 struct dc_gamma *gamma = kvzalloc(sizeof(*gamma), GFP_KERNEL); 214 215 if (gamma == NULL) 216 goto alloc_fail; 217 218 kref_init(&gamma->refcount); 219 return gamma; 220 221 alloc_fail: 222 return NULL; 223 } 224 225 void dc_transfer_func_retain(struct dc_transfer_func *tf) 226 { 227 kref_get(&tf->refcount); 228 } 229 230 static void dc_transfer_func_free(struct kref *kref) 231 { 232 struct dc_transfer_func *tf = container_of(kref, struct dc_transfer_func, refcount); 233 kvfree(tf); 234 } 235 236 void dc_transfer_func_release(struct dc_transfer_func *tf) 237 { 238 kref_put(&tf->refcount, dc_transfer_func_free); 239 } 240 241 struct dc_transfer_func *dc_create_transfer_func(void) 242 { 243 struct dc_transfer_func *tf = kvzalloc(sizeof(*tf), GFP_KERNEL); 244 245 if (tf == NULL) 246 goto alloc_fail; 247 248 kref_init(&tf->refcount); 249 250 return tf; 251 252 alloc_fail: 253 return NULL; 254 } 255 256 static void dc_3dlut_func_free(struct kref *kref) 257 { 258 struct dc_3dlut *lut = container_of(kref, struct dc_3dlut, refcount); 259 260 kvfree(lut); 261 } 262 263 struct dc_3dlut *dc_create_3dlut_func(void) 264 { 265 struct dc_3dlut *lut = kvzalloc(sizeof(*lut), GFP_KERNEL); 266 267 if (lut == NULL) 268 goto alloc_fail; 269 270 kref_init(&lut->refcount); 271 lut->state.raw = 0; 272 273 return lut; 274 275 alloc_fail: 276 return NULL; 277 278 } 279 280 void dc_3dlut_func_release(struct dc_3dlut *lut) 281 { 282 kref_put(&lut->refcount, dc_3dlut_func_free); 283 } 284 285 void dc_3dlut_func_retain(struct dc_3dlut *lut) 286 { 287 kref_get(&lut->refcount); 288 } 289 290 291