1 /* 2 * Copyright (C) 2012 Samsung Electronics Co.Ltd 3 * Authors: 4 * Eunchul Kim <chulspro.kim@samsung.com> 5 * Jinyoung Jeon <jy0.jeon@samsung.com> 6 * Sangmin Lee <lsmin.lee@samsung.com> 7 * 8 * This program is free software; you can redistribute it and/or modify it 9 * under the terms of the GNU General Public License as published by the 10 * Free Software Foundation; either version 2 of the License, or (at your 11 * option) any later version. 12 * 13 */ 14 #include <linux/kernel.h> 15 #include <linux/platform_device.h> 16 #include <linux/clk.h> 17 #include <linux/pm_runtime.h> 18 #include <plat/map-base.h> 19 20 #include <drm/drmP.h> 21 #include <drm/exynos_drm.h> 22 #include "regs-gsc.h" 23 #include "exynos_drm_ipp.h" 24 #include "exynos_drm_gsc.h" 25 26 /* 27 * GSC stands for General SCaler and 28 * supports image scaler/rotator and input/output DMA operations. 29 * input DMA reads image data from the memory. 30 * output DMA writes image data to memory. 31 * GSC supports image rotation and image effect functions. 32 * 33 * M2M operation : supports crop/scale/rotation/csc so on. 34 * Memory ----> GSC H/W ----> Memory. 35 * Writeback operation : supports cloned screen with FIMD. 36 * FIMD ----> GSC H/W ----> Memory. 37 * Output operation : supports direct display using local path. 38 * Memory ----> GSC H/W ----> FIMD, Mixer. 39 */ 40 41 /* 42 * TODO 43 * 1. check suspend/resume api if needed. 44 * 2. need to check use case platform_device_id. 45 * 3. check src/dst size with, height. 46 * 4. added check_prepare api for right register. 47 * 5. need to add supported list in prop_list. 48 * 6. check prescaler/scaler optimization. 49 */ 50 51 #define GSC_MAX_DEVS 4 52 #define GSC_MAX_SRC 4 53 #define GSC_MAX_DST 16 54 #define GSC_RESET_TIMEOUT 50 55 #define GSC_BUF_STOP 1 56 #define GSC_BUF_START 2 57 #define GSC_REG_SZ 16 58 #define GSC_WIDTH_ITU_709 1280 59 #define GSC_SC_UP_MAX_RATIO 65536 60 #define GSC_SC_DOWN_RATIO_7_8 74898 61 #define GSC_SC_DOWN_RATIO_6_8 87381 62 #define GSC_SC_DOWN_RATIO_5_8 104857 63 #define GSC_SC_DOWN_RATIO_4_8 131072 64 #define GSC_SC_DOWN_RATIO_3_8 174762 65 #define GSC_SC_DOWN_RATIO_2_8 262144 66 #define GSC_REFRESH_MIN 12 67 #define GSC_REFRESH_MAX 60 68 #define GSC_CROP_MAX 8192 69 #define GSC_CROP_MIN 32 70 #define GSC_SCALE_MAX 4224 71 #define GSC_SCALE_MIN 32 72 #define GSC_COEF_RATIO 7 73 #define GSC_COEF_PHASE 9 74 #define GSC_COEF_ATTR 16 75 #define GSC_COEF_H_8T 8 76 #define GSC_COEF_V_4T 4 77 #define GSC_COEF_DEPTH 3 78 79 #define get_gsc_context(dev) platform_get_drvdata(to_platform_device(dev)) 80 #define get_ctx_from_ippdrv(ippdrv) container_of(ippdrv,\ 81 struct gsc_context, ippdrv); 82 #define gsc_read(offset) readl(ctx->regs + (offset)) 83 #define gsc_write(cfg, offset) writel(cfg, ctx->regs + (offset)) 84 85 /* 86 * A structure of scaler. 87 * 88 * @range: narrow, wide. 89 * @pre_shfactor: pre sclaer shift factor. 90 * @pre_hratio: horizontal ratio of the prescaler. 91 * @pre_vratio: vertical ratio of the prescaler. 92 * @main_hratio: the main scaler's horizontal ratio. 93 * @main_vratio: the main scaler's vertical ratio. 94 */ 95 struct gsc_scaler { 96 bool range; 97 u32 pre_shfactor; 98 u32 pre_hratio; 99 u32 pre_vratio; 100 unsigned long main_hratio; 101 unsigned long main_vratio; 102 }; 103 104 /* 105 * A structure of scaler capability. 106 * 107 * find user manual 49.2 features. 108 * @tile_w: tile mode or rotation width. 109 * @tile_h: tile mode or rotation height. 110 * @w: other cases width. 111 * @h: other cases height. 112 */ 113 struct gsc_capability { 114 /* tile or rotation */ 115 u32 tile_w; 116 u32 tile_h; 117 /* other cases */ 118 u32 w; 119 u32 h; 120 }; 121 122 /* 123 * A structure of gsc context. 124 * 125 * @ippdrv: prepare initialization using ippdrv. 126 * @regs_res: register resources. 127 * @regs: memory mapped io registers. 128 * @lock: locking of operations. 129 * @gsc_clk: gsc gate clock. 130 * @sc: scaler infomations. 131 * @id: gsc id. 132 * @irq: irq number. 133 * @rotation: supports rotation of src. 134 * @suspended: qos operations. 135 */ 136 struct gsc_context { 137 struct exynos_drm_ippdrv ippdrv; 138 struct resource *regs_res; 139 void __iomem *regs; 140 struct mutex lock; 141 struct clk *gsc_clk; 142 struct gsc_scaler sc; 143 int id; 144 int irq; 145 bool rotation; 146 bool suspended; 147 }; 148 149 /* 8-tap Filter Coefficient */ 150 static const int h_coef_8t[GSC_COEF_RATIO][GSC_COEF_ATTR][GSC_COEF_H_8T] = { 151 { /* Ratio <= 65536 (~8:8) */ 152 { 0, 0, 0, 128, 0, 0, 0, 0 }, 153 { -1, 2, -6, 127, 7, -2, 1, 0 }, 154 { -1, 4, -12, 125, 16, -5, 1, 0 }, 155 { -1, 5, -15, 120, 25, -8, 2, 0 }, 156 { -1, 6, -18, 114, 35, -10, 3, -1 }, 157 { -1, 6, -20, 107, 46, -13, 4, -1 }, 158 { -2, 7, -21, 99, 57, -16, 5, -1 }, 159 { -1, 6, -20, 89, 68, -18, 5, -1 }, 160 { -1, 6, -20, 79, 79, -20, 6, -1 }, 161 { -1, 5, -18, 68, 89, -20, 6, -1 }, 162 { -1, 5, -16, 57, 99, -21, 7, -2 }, 163 { -1, 4, -13, 46, 107, -20, 6, -1 }, 164 { -1, 3, -10, 35, 114, -18, 6, -1 }, 165 { 0, 2, -8, 25, 120, -15, 5, -1 }, 166 { 0, 1, -5, 16, 125, -12, 4, -1 }, 167 { 0, 1, -2, 7, 127, -6, 2, -1 } 168 }, { /* 65536 < Ratio <= 74898 (~8:7) */ 169 { 3, -8, 14, 111, 13, -8, 3, 0 }, 170 { 2, -6, 7, 112, 21, -10, 3, -1 }, 171 { 2, -4, 1, 110, 28, -12, 4, -1 }, 172 { 1, -2, -3, 106, 36, -13, 4, -1 }, 173 { 1, -1, -7, 103, 44, -15, 4, -1 }, 174 { 1, 1, -11, 97, 53, -16, 4, -1 }, 175 { 0, 2, -13, 91, 61, -16, 4, -1 }, 176 { 0, 3, -15, 85, 69, -17, 4, -1 }, 177 { 0, 3, -16, 77, 77, -16, 3, 0 }, 178 { -1, 4, -17, 69, 85, -15, 3, 0 }, 179 { -1, 4, -16, 61, 91, -13, 2, 0 }, 180 { -1, 4, -16, 53, 97, -11, 1, 1 }, 181 { -1, 4, -15, 44, 103, -7, -1, 1 }, 182 { -1, 4, -13, 36, 106, -3, -2, 1 }, 183 { -1, 4, -12, 28, 110, 1, -4, 2 }, 184 { -1, 3, -10, 21, 112, 7, -6, 2 } 185 }, { /* 74898 < Ratio <= 87381 (~8:6) */ 186 { 2, -11, 25, 96, 25, -11, 2, 0 }, 187 { 2, -10, 19, 96, 31, -12, 2, 0 }, 188 { 2, -9, 14, 94, 37, -12, 2, 0 }, 189 { 2, -8, 10, 92, 43, -12, 1, 0 }, 190 { 2, -7, 5, 90, 49, -12, 1, 0 }, 191 { 2, -5, 1, 86, 55, -12, 0, 1 }, 192 { 2, -4, -2, 82, 61, -11, -1, 1 }, 193 { 1, -3, -5, 77, 67, -9, -1, 1 }, 194 { 1, -2, -7, 72, 72, -7, -2, 1 }, 195 { 1, -1, -9, 67, 77, -5, -3, 1 }, 196 { 1, -1, -11, 61, 82, -2, -4, 2 }, 197 { 1, 0, -12, 55, 86, 1, -5, 2 }, 198 { 0, 1, -12, 49, 90, 5, -7, 2 }, 199 { 0, 1, -12, 43, 92, 10, -8, 2 }, 200 { 0, 2, -12, 37, 94, 14, -9, 2 }, 201 { 0, 2, -12, 31, 96, 19, -10, 2 } 202 }, { /* 87381 < Ratio <= 104857 (~8:5) */ 203 { -1, -8, 33, 80, 33, -8, -1, 0 }, 204 { -1, -8, 28, 80, 37, -7, -2, 1 }, 205 { 0, -8, 24, 79, 41, -7, -2, 1 }, 206 { 0, -8, 20, 78, 46, -6, -3, 1 }, 207 { 0, -8, 16, 76, 50, -4, -3, 1 }, 208 { 0, -7, 13, 74, 54, -3, -4, 1 }, 209 { 1, -7, 10, 71, 58, -1, -5, 1 }, 210 { 1, -6, 6, 68, 62, 1, -5, 1 }, 211 { 1, -6, 4, 65, 65, 4, -6, 1 }, 212 { 1, -5, 1, 62, 68, 6, -6, 1 }, 213 { 1, -5, -1, 58, 71, 10, -7, 1 }, 214 { 1, -4, -3, 54, 74, 13, -7, 0 }, 215 { 1, -3, -4, 50, 76, 16, -8, 0 }, 216 { 1, -3, -6, 46, 78, 20, -8, 0 }, 217 { 1, -2, -7, 41, 79, 24, -8, 0 }, 218 { 1, -2, -7, 37, 80, 28, -8, -1 } 219 }, { /* 104857 < Ratio <= 131072 (~8:4) */ 220 { -3, 0, 35, 64, 35, 0, -3, 0 }, 221 { -3, -1, 32, 64, 38, 1, -3, 0 }, 222 { -2, -2, 29, 63, 41, 2, -3, 0 }, 223 { -2, -3, 27, 63, 43, 4, -4, 0 }, 224 { -2, -3, 24, 61, 46, 6, -4, 0 }, 225 { -2, -3, 21, 60, 49, 7, -4, 0 }, 226 { -1, -4, 19, 59, 51, 9, -4, -1 }, 227 { -1, -4, 16, 57, 53, 12, -4, -1 }, 228 { -1, -4, 14, 55, 55, 14, -4, -1 }, 229 { -1, -4, 12, 53, 57, 16, -4, -1 }, 230 { -1, -4, 9, 51, 59, 19, -4, -1 }, 231 { 0, -4, 7, 49, 60, 21, -3, -2 }, 232 { 0, -4, 6, 46, 61, 24, -3, -2 }, 233 { 0, -4, 4, 43, 63, 27, -3, -2 }, 234 { 0, -3, 2, 41, 63, 29, -2, -2 }, 235 { 0, -3, 1, 38, 64, 32, -1, -3 } 236 }, { /* 131072 < Ratio <= 174762 (~8:3) */ 237 { -1, 8, 33, 48, 33, 8, -1, 0 }, 238 { -1, 7, 31, 49, 35, 9, -1, -1 }, 239 { -1, 6, 30, 49, 36, 10, -1, -1 }, 240 { -1, 5, 28, 48, 38, 12, -1, -1 }, 241 { -1, 4, 26, 48, 39, 13, 0, -1 }, 242 { -1, 3, 24, 47, 41, 15, 0, -1 }, 243 { -1, 2, 23, 47, 42, 16, 0, -1 }, 244 { -1, 2, 21, 45, 43, 18, 1, -1 }, 245 { -1, 1, 19, 45, 45, 19, 1, -1 }, 246 { -1, 1, 18, 43, 45, 21, 2, -1 }, 247 { -1, 0, 16, 42, 47, 23, 2, -1 }, 248 { -1, 0, 15, 41, 47, 24, 3, -1 }, 249 { -1, 0, 13, 39, 48, 26, 4, -1 }, 250 { -1, -1, 12, 38, 48, 28, 5, -1 }, 251 { -1, -1, 10, 36, 49, 30, 6, -1 }, 252 { -1, -1, 9, 35, 49, 31, 7, -1 } 253 }, { /* 174762 < Ratio <= 262144 (~8:2) */ 254 { 2, 13, 30, 38, 30, 13, 2, 0 }, 255 { 2, 12, 29, 38, 30, 14, 3, 0 }, 256 { 2, 11, 28, 38, 31, 15, 3, 0 }, 257 { 2, 10, 26, 38, 32, 16, 4, 0 }, 258 { 1, 10, 26, 37, 33, 17, 4, 0 }, 259 { 1, 9, 24, 37, 34, 18, 5, 0 }, 260 { 1, 8, 24, 37, 34, 19, 5, 0 }, 261 { 1, 7, 22, 36, 35, 20, 6, 1 }, 262 { 1, 6, 21, 36, 36, 21, 6, 1 }, 263 { 1, 6, 20, 35, 36, 22, 7, 1 }, 264 { 0, 5, 19, 34, 37, 24, 8, 1 }, 265 { 0, 5, 18, 34, 37, 24, 9, 1 }, 266 { 0, 4, 17, 33, 37, 26, 10, 1 }, 267 { 0, 4, 16, 32, 38, 26, 10, 2 }, 268 { 0, 3, 15, 31, 38, 28, 11, 2 }, 269 { 0, 3, 14, 30, 38, 29, 12, 2 } 270 } 271 }; 272 273 /* 4-tap Filter Coefficient */ 274 static const int v_coef_4t[GSC_COEF_RATIO][GSC_COEF_ATTR][GSC_COEF_V_4T] = { 275 { /* Ratio <= 65536 (~8:8) */ 276 { 0, 128, 0, 0 }, 277 { -4, 127, 5, 0 }, 278 { -6, 124, 11, -1 }, 279 { -8, 118, 19, -1 }, 280 { -8, 111, 27, -2 }, 281 { -8, 102, 37, -3 }, 282 { -8, 92, 48, -4 }, 283 { -7, 81, 59, -5 }, 284 { -6, 70, 70, -6 }, 285 { -5, 59, 81, -7 }, 286 { -4, 48, 92, -8 }, 287 { -3, 37, 102, -8 }, 288 { -2, 27, 111, -8 }, 289 { -1, 19, 118, -8 }, 290 { -1, 11, 124, -6 }, 291 { 0, 5, 127, -4 } 292 }, { /* 65536 < Ratio <= 74898 (~8:7) */ 293 { 8, 112, 8, 0 }, 294 { 4, 111, 14, -1 }, 295 { 1, 109, 20, -2 }, 296 { -2, 105, 27, -2 }, 297 { -3, 100, 34, -3 }, 298 { -5, 93, 43, -3 }, 299 { -5, 86, 51, -4 }, 300 { -5, 77, 60, -4 }, 301 { -5, 69, 69, -5 }, 302 { -4, 60, 77, -5 }, 303 { -4, 51, 86, -5 }, 304 { -3, 43, 93, -5 }, 305 { -3, 34, 100, -3 }, 306 { -2, 27, 105, -2 }, 307 { -2, 20, 109, 1 }, 308 { -1, 14, 111, 4 } 309 }, { /* 74898 < Ratio <= 87381 (~8:6) */ 310 { 16, 96, 16, 0 }, 311 { 12, 97, 21, -2 }, 312 { 8, 96, 26, -2 }, 313 { 5, 93, 32, -2 }, 314 { 2, 89, 39, -2 }, 315 { 0, 84, 46, -2 }, 316 { -1, 79, 53, -3 }, 317 { -2, 73, 59, -2 }, 318 { -2, 66, 66, -2 }, 319 { -2, 59, 73, -2 }, 320 { -3, 53, 79, -1 }, 321 { -2, 46, 84, 0 }, 322 { -2, 39, 89, 2 }, 323 { -2, 32, 93, 5 }, 324 { -2, 26, 96, 8 }, 325 { -2, 21, 97, 12 } 326 }, { /* 87381 < Ratio <= 104857 (~8:5) */ 327 { 22, 84, 22, 0 }, 328 { 18, 85, 26, -1 }, 329 { 14, 84, 31, -1 }, 330 { 11, 82, 36, -1 }, 331 { 8, 79, 42, -1 }, 332 { 6, 76, 47, -1 }, 333 { 4, 72, 52, 0 }, 334 { 2, 68, 58, 0 }, 335 { 1, 63, 63, 1 }, 336 { 0, 58, 68, 2 }, 337 { 0, 52, 72, 4 }, 338 { -1, 47, 76, 6 }, 339 { -1, 42, 79, 8 }, 340 { -1, 36, 82, 11 }, 341 { -1, 31, 84, 14 }, 342 { -1, 26, 85, 18 } 343 }, { /* 104857 < Ratio <= 131072 (~8:4) */ 344 { 26, 76, 26, 0 }, 345 { 22, 76, 30, 0 }, 346 { 19, 75, 34, 0 }, 347 { 16, 73, 38, 1 }, 348 { 13, 71, 43, 1 }, 349 { 10, 69, 47, 2 }, 350 { 8, 66, 51, 3 }, 351 { 6, 63, 55, 4 }, 352 { 5, 59, 59, 5 }, 353 { 4, 55, 63, 6 }, 354 { 3, 51, 66, 8 }, 355 { 2, 47, 69, 10 }, 356 { 1, 43, 71, 13 }, 357 { 1, 38, 73, 16 }, 358 { 0, 34, 75, 19 }, 359 { 0, 30, 76, 22 } 360 }, { /* 131072 < Ratio <= 174762 (~8:3) */ 361 { 29, 70, 29, 0 }, 362 { 26, 68, 32, 2 }, 363 { 23, 67, 36, 2 }, 364 { 20, 66, 39, 3 }, 365 { 17, 65, 43, 3 }, 366 { 15, 63, 46, 4 }, 367 { 12, 61, 50, 5 }, 368 { 10, 58, 53, 7 }, 369 { 8, 56, 56, 8 }, 370 { 7, 53, 58, 10 }, 371 { 5, 50, 61, 12 }, 372 { 4, 46, 63, 15 }, 373 { 3, 43, 65, 17 }, 374 { 3, 39, 66, 20 }, 375 { 2, 36, 67, 23 }, 376 { 2, 32, 68, 26 } 377 }, { /* 174762 < Ratio <= 262144 (~8:2) */ 378 { 32, 64, 32, 0 }, 379 { 28, 63, 34, 3 }, 380 { 25, 62, 37, 4 }, 381 { 22, 62, 40, 4 }, 382 { 19, 61, 43, 5 }, 383 { 17, 59, 46, 6 }, 384 { 15, 58, 48, 7 }, 385 { 13, 55, 51, 9 }, 386 { 11, 53, 53, 11 }, 387 { 9, 51, 55, 13 }, 388 { 7, 48, 58, 15 }, 389 { 6, 46, 59, 17 }, 390 { 5, 43, 61, 19 }, 391 { 4, 40, 62, 22 }, 392 { 4, 37, 62, 25 }, 393 { 3, 34, 63, 28 } 394 } 395 }; 396 397 static int gsc_sw_reset(struct gsc_context *ctx) 398 { 399 u32 cfg; 400 int count = GSC_RESET_TIMEOUT; 401 402 /* s/w reset */ 403 cfg = (GSC_SW_RESET_SRESET); 404 gsc_write(cfg, GSC_SW_RESET); 405 406 /* wait s/w reset complete */ 407 while (count--) { 408 cfg = gsc_read(GSC_SW_RESET); 409 if (!cfg) 410 break; 411 usleep_range(1000, 2000); 412 } 413 414 if (cfg) { 415 DRM_ERROR("failed to reset gsc h/w.\n"); 416 return -EBUSY; 417 } 418 419 /* reset sequence */ 420 cfg = gsc_read(GSC_IN_BASE_ADDR_Y_MASK); 421 cfg |= (GSC_IN_BASE_ADDR_MASK | 422 GSC_IN_BASE_ADDR_PINGPONG(0)); 423 gsc_write(cfg, GSC_IN_BASE_ADDR_Y_MASK); 424 gsc_write(cfg, GSC_IN_BASE_ADDR_CB_MASK); 425 gsc_write(cfg, GSC_IN_BASE_ADDR_CR_MASK); 426 427 cfg = gsc_read(GSC_OUT_BASE_ADDR_Y_MASK); 428 cfg |= (GSC_OUT_BASE_ADDR_MASK | 429 GSC_OUT_BASE_ADDR_PINGPONG(0)); 430 gsc_write(cfg, GSC_OUT_BASE_ADDR_Y_MASK); 431 gsc_write(cfg, GSC_OUT_BASE_ADDR_CB_MASK); 432 gsc_write(cfg, GSC_OUT_BASE_ADDR_CR_MASK); 433 434 return 0; 435 } 436 437 static void gsc_set_gscblk_fimd_wb(struct gsc_context *ctx, bool enable) 438 { 439 u32 gscblk_cfg; 440 441 gscblk_cfg = readl(SYSREG_GSCBLK_CFG1); 442 443 if (enable) 444 gscblk_cfg |= GSC_BLK_DISP1WB_DEST(ctx->id) | 445 GSC_BLK_GSCL_WB_IN_SRC_SEL(ctx->id) | 446 GSC_BLK_SW_RESET_WB_DEST(ctx->id); 447 else 448 gscblk_cfg |= GSC_BLK_PXLASYNC_LO_MASK_WB(ctx->id); 449 450 writel(gscblk_cfg, SYSREG_GSCBLK_CFG1); 451 } 452 453 static void gsc_handle_irq(struct gsc_context *ctx, bool enable, 454 bool overflow, bool done) 455 { 456 u32 cfg; 457 458 DRM_DEBUG_KMS("enable[%d]overflow[%d]level[%d]\n", 459 enable, overflow, done); 460 461 cfg = gsc_read(GSC_IRQ); 462 cfg |= (GSC_IRQ_OR_MASK | GSC_IRQ_FRMDONE_MASK); 463 464 if (enable) 465 cfg |= GSC_IRQ_ENABLE; 466 else 467 cfg &= ~GSC_IRQ_ENABLE; 468 469 if (overflow) 470 cfg &= ~GSC_IRQ_OR_MASK; 471 else 472 cfg |= GSC_IRQ_OR_MASK; 473 474 if (done) 475 cfg &= ~GSC_IRQ_FRMDONE_MASK; 476 else 477 cfg |= GSC_IRQ_FRMDONE_MASK; 478 479 gsc_write(cfg, GSC_IRQ); 480 } 481 482 483 static int gsc_src_set_fmt(struct device *dev, u32 fmt) 484 { 485 struct gsc_context *ctx = get_gsc_context(dev); 486 struct exynos_drm_ippdrv *ippdrv = &ctx->ippdrv; 487 u32 cfg; 488 489 DRM_DEBUG_KMS("fmt[0x%x]\n", fmt); 490 491 cfg = gsc_read(GSC_IN_CON); 492 cfg &= ~(GSC_IN_RGB_TYPE_MASK | GSC_IN_YUV422_1P_ORDER_MASK | 493 GSC_IN_CHROMA_ORDER_MASK | GSC_IN_FORMAT_MASK | 494 GSC_IN_TILE_TYPE_MASK | GSC_IN_TILE_MODE | 495 GSC_IN_CHROM_STRIDE_SEL_MASK | GSC_IN_RB_SWAP_MASK); 496 497 switch (fmt) { 498 case DRM_FORMAT_RGB565: 499 cfg |= GSC_IN_RGB565; 500 break; 501 case DRM_FORMAT_XRGB8888: 502 cfg |= GSC_IN_XRGB8888; 503 break; 504 case DRM_FORMAT_BGRX8888: 505 cfg |= (GSC_IN_XRGB8888 | GSC_IN_RB_SWAP); 506 break; 507 case DRM_FORMAT_YUYV: 508 cfg |= (GSC_IN_YUV422_1P | 509 GSC_IN_YUV422_1P_ORDER_LSB_Y | 510 GSC_IN_CHROMA_ORDER_CBCR); 511 break; 512 case DRM_FORMAT_YVYU: 513 cfg |= (GSC_IN_YUV422_1P | 514 GSC_IN_YUV422_1P_ORDER_LSB_Y | 515 GSC_IN_CHROMA_ORDER_CRCB); 516 break; 517 case DRM_FORMAT_UYVY: 518 cfg |= (GSC_IN_YUV422_1P | 519 GSC_IN_YUV422_1P_OEDER_LSB_C | 520 GSC_IN_CHROMA_ORDER_CBCR); 521 break; 522 case DRM_FORMAT_VYUY: 523 cfg |= (GSC_IN_YUV422_1P | 524 GSC_IN_YUV422_1P_OEDER_LSB_C | 525 GSC_IN_CHROMA_ORDER_CRCB); 526 break; 527 case DRM_FORMAT_NV21: 528 case DRM_FORMAT_NV61: 529 cfg |= (GSC_IN_CHROMA_ORDER_CRCB | 530 GSC_IN_YUV420_2P); 531 break; 532 case DRM_FORMAT_YUV422: 533 cfg |= GSC_IN_YUV422_3P; 534 break; 535 case DRM_FORMAT_YUV420: 536 case DRM_FORMAT_YVU420: 537 cfg |= GSC_IN_YUV420_3P; 538 break; 539 case DRM_FORMAT_NV12: 540 case DRM_FORMAT_NV16: 541 cfg |= (GSC_IN_CHROMA_ORDER_CBCR | 542 GSC_IN_YUV420_2P); 543 break; 544 case DRM_FORMAT_NV12MT: 545 cfg |= (GSC_IN_TILE_C_16x8 | GSC_IN_TILE_MODE); 546 break; 547 default: 548 dev_err(ippdrv->dev, "inavlid target yuv order 0x%x.\n", fmt); 549 return -EINVAL; 550 } 551 552 gsc_write(cfg, GSC_IN_CON); 553 554 return 0; 555 } 556 557 static int gsc_src_set_transf(struct device *dev, 558 enum drm_exynos_degree degree, 559 enum drm_exynos_flip flip, bool *swap) 560 { 561 struct gsc_context *ctx = get_gsc_context(dev); 562 struct exynos_drm_ippdrv *ippdrv = &ctx->ippdrv; 563 u32 cfg; 564 565 DRM_DEBUG_KMS("degree[%d]flip[0x%x]\n", degree, flip); 566 567 cfg = gsc_read(GSC_IN_CON); 568 cfg &= ~GSC_IN_ROT_MASK; 569 570 switch (degree) { 571 case EXYNOS_DRM_DEGREE_0: 572 if (flip & EXYNOS_DRM_FLIP_VERTICAL) 573 cfg |= GSC_IN_ROT_XFLIP; 574 if (flip & EXYNOS_DRM_FLIP_HORIZONTAL) 575 cfg |= GSC_IN_ROT_YFLIP; 576 break; 577 case EXYNOS_DRM_DEGREE_90: 578 if (flip & EXYNOS_DRM_FLIP_VERTICAL) 579 cfg |= GSC_IN_ROT_90_XFLIP; 580 else if (flip & EXYNOS_DRM_FLIP_HORIZONTAL) 581 cfg |= GSC_IN_ROT_90_YFLIP; 582 else 583 cfg |= GSC_IN_ROT_90; 584 break; 585 case EXYNOS_DRM_DEGREE_180: 586 cfg |= GSC_IN_ROT_180; 587 break; 588 case EXYNOS_DRM_DEGREE_270: 589 cfg |= GSC_IN_ROT_270; 590 break; 591 default: 592 dev_err(ippdrv->dev, "inavlid degree value %d.\n", degree); 593 return -EINVAL; 594 } 595 596 gsc_write(cfg, GSC_IN_CON); 597 598 ctx->rotation = cfg & 599 (GSC_IN_ROT_90 | GSC_IN_ROT_270) ? 1 : 0; 600 *swap = ctx->rotation; 601 602 return 0; 603 } 604 605 static int gsc_src_set_size(struct device *dev, int swap, 606 struct drm_exynos_pos *pos, struct drm_exynos_sz *sz) 607 { 608 struct gsc_context *ctx = get_gsc_context(dev); 609 struct drm_exynos_pos img_pos = *pos; 610 struct gsc_scaler *sc = &ctx->sc; 611 u32 cfg; 612 613 DRM_DEBUG_KMS("swap[%d]x[%d]y[%d]w[%d]h[%d]\n", 614 swap, pos->x, pos->y, pos->w, pos->h); 615 616 if (swap) { 617 img_pos.w = pos->h; 618 img_pos.h = pos->w; 619 } 620 621 /* pixel offset */ 622 cfg = (GSC_SRCIMG_OFFSET_X(img_pos.x) | 623 GSC_SRCIMG_OFFSET_Y(img_pos.y)); 624 gsc_write(cfg, GSC_SRCIMG_OFFSET); 625 626 /* cropped size */ 627 cfg = (GSC_CROPPED_WIDTH(img_pos.w) | 628 GSC_CROPPED_HEIGHT(img_pos.h)); 629 gsc_write(cfg, GSC_CROPPED_SIZE); 630 631 DRM_DEBUG_KMS("hsize[%d]vsize[%d]\n", sz->hsize, sz->vsize); 632 633 /* original size */ 634 cfg = gsc_read(GSC_SRCIMG_SIZE); 635 cfg &= ~(GSC_SRCIMG_HEIGHT_MASK | 636 GSC_SRCIMG_WIDTH_MASK); 637 638 cfg |= (GSC_SRCIMG_WIDTH(sz->hsize) | 639 GSC_SRCIMG_HEIGHT(sz->vsize)); 640 641 gsc_write(cfg, GSC_SRCIMG_SIZE); 642 643 cfg = gsc_read(GSC_IN_CON); 644 cfg &= ~GSC_IN_RGB_TYPE_MASK; 645 646 DRM_DEBUG_KMS("width[%d]range[%d]\n", pos->w, sc->range); 647 648 if (pos->w >= GSC_WIDTH_ITU_709) 649 if (sc->range) 650 cfg |= GSC_IN_RGB_HD_WIDE; 651 else 652 cfg |= GSC_IN_RGB_HD_NARROW; 653 else 654 if (sc->range) 655 cfg |= GSC_IN_RGB_SD_WIDE; 656 else 657 cfg |= GSC_IN_RGB_SD_NARROW; 658 659 gsc_write(cfg, GSC_IN_CON); 660 661 return 0; 662 } 663 664 static int gsc_src_set_buf_seq(struct gsc_context *ctx, u32 buf_id, 665 enum drm_exynos_ipp_buf_type buf_type) 666 { 667 struct exynos_drm_ippdrv *ippdrv = &ctx->ippdrv; 668 bool masked; 669 u32 cfg; 670 u32 mask = 0x00000001 << buf_id; 671 672 DRM_DEBUG_KMS("buf_id[%d]buf_type[%d]\n", buf_id, buf_type); 673 674 /* mask register set */ 675 cfg = gsc_read(GSC_IN_BASE_ADDR_Y_MASK); 676 677 switch (buf_type) { 678 case IPP_BUF_ENQUEUE: 679 masked = false; 680 break; 681 case IPP_BUF_DEQUEUE: 682 masked = true; 683 break; 684 default: 685 dev_err(ippdrv->dev, "invalid buf ctrl parameter.\n"); 686 return -EINVAL; 687 } 688 689 /* sequence id */ 690 cfg &= ~mask; 691 cfg |= masked << buf_id; 692 gsc_write(cfg, GSC_IN_BASE_ADDR_Y_MASK); 693 gsc_write(cfg, GSC_IN_BASE_ADDR_CB_MASK); 694 gsc_write(cfg, GSC_IN_BASE_ADDR_CR_MASK); 695 696 return 0; 697 } 698 699 static int gsc_src_set_addr(struct device *dev, 700 struct drm_exynos_ipp_buf_info *buf_info, u32 buf_id, 701 enum drm_exynos_ipp_buf_type buf_type) 702 { 703 struct gsc_context *ctx = get_gsc_context(dev); 704 struct exynos_drm_ippdrv *ippdrv = &ctx->ippdrv; 705 struct drm_exynos_ipp_cmd_node *c_node = ippdrv->c_node; 706 struct drm_exynos_ipp_property *property; 707 708 if (!c_node) { 709 DRM_ERROR("failed to get c_node.\n"); 710 return -EFAULT; 711 } 712 713 property = &c_node->property; 714 715 DRM_DEBUG_KMS("prop_id[%d]buf_id[%d]buf_type[%d]\n", 716 property->prop_id, buf_id, buf_type); 717 718 if (buf_id > GSC_MAX_SRC) { 719 dev_info(ippdrv->dev, "inavlid buf_id %d.\n", buf_id); 720 return -EINVAL; 721 } 722 723 /* address register set */ 724 switch (buf_type) { 725 case IPP_BUF_ENQUEUE: 726 gsc_write(buf_info->base[EXYNOS_DRM_PLANAR_Y], 727 GSC_IN_BASE_ADDR_Y(buf_id)); 728 gsc_write(buf_info->base[EXYNOS_DRM_PLANAR_CB], 729 GSC_IN_BASE_ADDR_CB(buf_id)); 730 gsc_write(buf_info->base[EXYNOS_DRM_PLANAR_CR], 731 GSC_IN_BASE_ADDR_CR(buf_id)); 732 break; 733 case IPP_BUF_DEQUEUE: 734 gsc_write(0x0, GSC_IN_BASE_ADDR_Y(buf_id)); 735 gsc_write(0x0, GSC_IN_BASE_ADDR_CB(buf_id)); 736 gsc_write(0x0, GSC_IN_BASE_ADDR_CR(buf_id)); 737 break; 738 default: 739 /* bypass */ 740 break; 741 } 742 743 return gsc_src_set_buf_seq(ctx, buf_id, buf_type); 744 } 745 746 static struct exynos_drm_ipp_ops gsc_src_ops = { 747 .set_fmt = gsc_src_set_fmt, 748 .set_transf = gsc_src_set_transf, 749 .set_size = gsc_src_set_size, 750 .set_addr = gsc_src_set_addr, 751 }; 752 753 static int gsc_dst_set_fmt(struct device *dev, u32 fmt) 754 { 755 struct gsc_context *ctx = get_gsc_context(dev); 756 struct exynos_drm_ippdrv *ippdrv = &ctx->ippdrv; 757 u32 cfg; 758 759 DRM_DEBUG_KMS("fmt[0x%x]\n", fmt); 760 761 cfg = gsc_read(GSC_OUT_CON); 762 cfg &= ~(GSC_OUT_RGB_TYPE_MASK | GSC_OUT_YUV422_1P_ORDER_MASK | 763 GSC_OUT_CHROMA_ORDER_MASK | GSC_OUT_FORMAT_MASK | 764 GSC_OUT_CHROM_STRIDE_SEL_MASK | GSC_OUT_RB_SWAP_MASK | 765 GSC_OUT_GLOBAL_ALPHA_MASK); 766 767 switch (fmt) { 768 case DRM_FORMAT_RGB565: 769 cfg |= GSC_OUT_RGB565; 770 break; 771 case DRM_FORMAT_XRGB8888: 772 cfg |= GSC_OUT_XRGB8888; 773 break; 774 case DRM_FORMAT_BGRX8888: 775 cfg |= (GSC_OUT_XRGB8888 | GSC_OUT_RB_SWAP); 776 break; 777 case DRM_FORMAT_YUYV: 778 cfg |= (GSC_OUT_YUV422_1P | 779 GSC_OUT_YUV422_1P_ORDER_LSB_Y | 780 GSC_OUT_CHROMA_ORDER_CBCR); 781 break; 782 case DRM_FORMAT_YVYU: 783 cfg |= (GSC_OUT_YUV422_1P | 784 GSC_OUT_YUV422_1P_ORDER_LSB_Y | 785 GSC_OUT_CHROMA_ORDER_CRCB); 786 break; 787 case DRM_FORMAT_UYVY: 788 cfg |= (GSC_OUT_YUV422_1P | 789 GSC_OUT_YUV422_1P_OEDER_LSB_C | 790 GSC_OUT_CHROMA_ORDER_CBCR); 791 break; 792 case DRM_FORMAT_VYUY: 793 cfg |= (GSC_OUT_YUV422_1P | 794 GSC_OUT_YUV422_1P_OEDER_LSB_C | 795 GSC_OUT_CHROMA_ORDER_CRCB); 796 break; 797 case DRM_FORMAT_NV21: 798 case DRM_FORMAT_NV61: 799 cfg |= (GSC_OUT_CHROMA_ORDER_CRCB | GSC_OUT_YUV420_2P); 800 break; 801 case DRM_FORMAT_YUV422: 802 case DRM_FORMAT_YUV420: 803 case DRM_FORMAT_YVU420: 804 cfg |= GSC_OUT_YUV420_3P; 805 break; 806 case DRM_FORMAT_NV12: 807 case DRM_FORMAT_NV16: 808 cfg |= (GSC_OUT_CHROMA_ORDER_CBCR | 809 GSC_OUT_YUV420_2P); 810 break; 811 case DRM_FORMAT_NV12MT: 812 cfg |= (GSC_OUT_TILE_C_16x8 | GSC_OUT_TILE_MODE); 813 break; 814 default: 815 dev_err(ippdrv->dev, "inavlid target yuv order 0x%x.\n", fmt); 816 return -EINVAL; 817 } 818 819 gsc_write(cfg, GSC_OUT_CON); 820 821 return 0; 822 } 823 824 static int gsc_dst_set_transf(struct device *dev, 825 enum drm_exynos_degree degree, 826 enum drm_exynos_flip flip, bool *swap) 827 { 828 struct gsc_context *ctx = get_gsc_context(dev); 829 struct exynos_drm_ippdrv *ippdrv = &ctx->ippdrv; 830 u32 cfg; 831 832 DRM_DEBUG_KMS("degree[%d]flip[0x%x]\n", degree, flip); 833 834 cfg = gsc_read(GSC_IN_CON); 835 cfg &= ~GSC_IN_ROT_MASK; 836 837 switch (degree) { 838 case EXYNOS_DRM_DEGREE_0: 839 if (flip & EXYNOS_DRM_FLIP_VERTICAL) 840 cfg |= GSC_IN_ROT_XFLIP; 841 if (flip & EXYNOS_DRM_FLIP_HORIZONTAL) 842 cfg |= GSC_IN_ROT_YFLIP; 843 break; 844 case EXYNOS_DRM_DEGREE_90: 845 if (flip & EXYNOS_DRM_FLIP_VERTICAL) 846 cfg |= GSC_IN_ROT_90_XFLIP; 847 else if (flip & EXYNOS_DRM_FLIP_HORIZONTAL) 848 cfg |= GSC_IN_ROT_90_YFLIP; 849 else 850 cfg |= GSC_IN_ROT_90; 851 break; 852 case EXYNOS_DRM_DEGREE_180: 853 cfg |= GSC_IN_ROT_180; 854 break; 855 case EXYNOS_DRM_DEGREE_270: 856 cfg |= GSC_IN_ROT_270; 857 break; 858 default: 859 dev_err(ippdrv->dev, "inavlid degree value %d.\n", degree); 860 return -EINVAL; 861 } 862 863 gsc_write(cfg, GSC_IN_CON); 864 865 ctx->rotation = cfg & 866 (GSC_IN_ROT_90 | GSC_IN_ROT_270) ? 1 : 0; 867 *swap = ctx->rotation; 868 869 return 0; 870 } 871 872 static int gsc_get_ratio_shift(u32 src, u32 dst, u32 *ratio) 873 { 874 DRM_DEBUG_KMS("src[%d]dst[%d]\n", src, dst); 875 876 if (src >= dst * 8) { 877 DRM_ERROR("failed to make ratio and shift.\n"); 878 return -EINVAL; 879 } else if (src >= dst * 4) 880 *ratio = 4; 881 else if (src >= dst * 2) 882 *ratio = 2; 883 else 884 *ratio = 1; 885 886 return 0; 887 } 888 889 static void gsc_get_prescaler_shfactor(u32 hratio, u32 vratio, u32 *shfactor) 890 { 891 if (hratio == 4 && vratio == 4) 892 *shfactor = 4; 893 else if ((hratio == 4 && vratio == 2) || 894 (hratio == 2 && vratio == 4)) 895 *shfactor = 3; 896 else if ((hratio == 4 && vratio == 1) || 897 (hratio == 1 && vratio == 4) || 898 (hratio == 2 && vratio == 2)) 899 *shfactor = 2; 900 else if (hratio == 1 && vratio == 1) 901 *shfactor = 0; 902 else 903 *shfactor = 1; 904 } 905 906 static int gsc_set_prescaler(struct gsc_context *ctx, struct gsc_scaler *sc, 907 struct drm_exynos_pos *src, struct drm_exynos_pos *dst) 908 { 909 struct exynos_drm_ippdrv *ippdrv = &ctx->ippdrv; 910 u32 cfg; 911 u32 src_w, src_h, dst_w, dst_h; 912 int ret = 0; 913 914 src_w = src->w; 915 src_h = src->h; 916 917 if (ctx->rotation) { 918 dst_w = dst->h; 919 dst_h = dst->w; 920 } else { 921 dst_w = dst->w; 922 dst_h = dst->h; 923 } 924 925 ret = gsc_get_ratio_shift(src_w, dst_w, &sc->pre_hratio); 926 if (ret) { 927 dev_err(ippdrv->dev, "failed to get ratio horizontal.\n"); 928 return ret; 929 } 930 931 ret = gsc_get_ratio_shift(src_h, dst_h, &sc->pre_vratio); 932 if (ret) { 933 dev_err(ippdrv->dev, "failed to get ratio vertical.\n"); 934 return ret; 935 } 936 937 DRM_DEBUG_KMS("pre_hratio[%d]pre_vratio[%d]\n", 938 sc->pre_hratio, sc->pre_vratio); 939 940 sc->main_hratio = (src_w << 16) / dst_w; 941 sc->main_vratio = (src_h << 16) / dst_h; 942 943 DRM_DEBUG_KMS("main_hratio[%ld]main_vratio[%ld]\n", 944 sc->main_hratio, sc->main_vratio); 945 946 gsc_get_prescaler_shfactor(sc->pre_hratio, sc->pre_vratio, 947 &sc->pre_shfactor); 948 949 DRM_DEBUG_KMS("pre_shfactor[%d]\n", sc->pre_shfactor); 950 951 cfg = (GSC_PRESC_SHFACTOR(sc->pre_shfactor) | 952 GSC_PRESC_H_RATIO(sc->pre_hratio) | 953 GSC_PRESC_V_RATIO(sc->pre_vratio)); 954 gsc_write(cfg, GSC_PRE_SCALE_RATIO); 955 956 return ret; 957 } 958 959 static void gsc_set_h_coef(struct gsc_context *ctx, unsigned long main_hratio) 960 { 961 int i, j, k, sc_ratio; 962 963 if (main_hratio <= GSC_SC_UP_MAX_RATIO) 964 sc_ratio = 0; 965 else if (main_hratio <= GSC_SC_DOWN_RATIO_7_8) 966 sc_ratio = 1; 967 else if (main_hratio <= GSC_SC_DOWN_RATIO_6_8) 968 sc_ratio = 2; 969 else if (main_hratio <= GSC_SC_DOWN_RATIO_5_8) 970 sc_ratio = 3; 971 else if (main_hratio <= GSC_SC_DOWN_RATIO_4_8) 972 sc_ratio = 4; 973 else if (main_hratio <= GSC_SC_DOWN_RATIO_3_8) 974 sc_ratio = 5; 975 else 976 sc_ratio = 6; 977 978 for (i = 0; i < GSC_COEF_PHASE; i++) 979 for (j = 0; j < GSC_COEF_H_8T; j++) 980 for (k = 0; k < GSC_COEF_DEPTH; k++) 981 gsc_write(h_coef_8t[sc_ratio][i][j], 982 GSC_HCOEF(i, j, k)); 983 } 984 985 static void gsc_set_v_coef(struct gsc_context *ctx, unsigned long main_vratio) 986 { 987 int i, j, k, sc_ratio; 988 989 if (main_vratio <= GSC_SC_UP_MAX_RATIO) 990 sc_ratio = 0; 991 else if (main_vratio <= GSC_SC_DOWN_RATIO_7_8) 992 sc_ratio = 1; 993 else if (main_vratio <= GSC_SC_DOWN_RATIO_6_8) 994 sc_ratio = 2; 995 else if (main_vratio <= GSC_SC_DOWN_RATIO_5_8) 996 sc_ratio = 3; 997 else if (main_vratio <= GSC_SC_DOWN_RATIO_4_8) 998 sc_ratio = 4; 999 else if (main_vratio <= GSC_SC_DOWN_RATIO_3_8) 1000 sc_ratio = 5; 1001 else 1002 sc_ratio = 6; 1003 1004 for (i = 0; i < GSC_COEF_PHASE; i++) 1005 for (j = 0; j < GSC_COEF_V_4T; j++) 1006 for (k = 0; k < GSC_COEF_DEPTH; k++) 1007 gsc_write(v_coef_4t[sc_ratio][i][j], 1008 GSC_VCOEF(i, j, k)); 1009 } 1010 1011 static void gsc_set_scaler(struct gsc_context *ctx, struct gsc_scaler *sc) 1012 { 1013 u32 cfg; 1014 1015 DRM_DEBUG_KMS("main_hratio[%ld]main_vratio[%ld]\n", 1016 sc->main_hratio, sc->main_vratio); 1017 1018 gsc_set_h_coef(ctx, sc->main_hratio); 1019 cfg = GSC_MAIN_H_RATIO_VALUE(sc->main_hratio); 1020 gsc_write(cfg, GSC_MAIN_H_RATIO); 1021 1022 gsc_set_v_coef(ctx, sc->main_vratio); 1023 cfg = GSC_MAIN_V_RATIO_VALUE(sc->main_vratio); 1024 gsc_write(cfg, GSC_MAIN_V_RATIO); 1025 } 1026 1027 static int gsc_dst_set_size(struct device *dev, int swap, 1028 struct drm_exynos_pos *pos, struct drm_exynos_sz *sz) 1029 { 1030 struct gsc_context *ctx = get_gsc_context(dev); 1031 struct drm_exynos_pos img_pos = *pos; 1032 struct gsc_scaler *sc = &ctx->sc; 1033 u32 cfg; 1034 1035 DRM_DEBUG_KMS("swap[%d]x[%d]y[%d]w[%d]h[%d]\n", 1036 swap, pos->x, pos->y, pos->w, pos->h); 1037 1038 if (swap) { 1039 img_pos.w = pos->h; 1040 img_pos.h = pos->w; 1041 } 1042 1043 /* pixel offset */ 1044 cfg = (GSC_DSTIMG_OFFSET_X(pos->x) | 1045 GSC_DSTIMG_OFFSET_Y(pos->y)); 1046 gsc_write(cfg, GSC_DSTIMG_OFFSET); 1047 1048 /* scaled size */ 1049 cfg = (GSC_SCALED_WIDTH(img_pos.w) | GSC_SCALED_HEIGHT(img_pos.h)); 1050 gsc_write(cfg, GSC_SCALED_SIZE); 1051 1052 DRM_DEBUG_KMS("hsize[%d]vsize[%d]\n", sz->hsize, sz->vsize); 1053 1054 /* original size */ 1055 cfg = gsc_read(GSC_DSTIMG_SIZE); 1056 cfg &= ~(GSC_DSTIMG_HEIGHT_MASK | 1057 GSC_DSTIMG_WIDTH_MASK); 1058 cfg |= (GSC_DSTIMG_WIDTH(sz->hsize) | 1059 GSC_DSTIMG_HEIGHT(sz->vsize)); 1060 gsc_write(cfg, GSC_DSTIMG_SIZE); 1061 1062 cfg = gsc_read(GSC_OUT_CON); 1063 cfg &= ~GSC_OUT_RGB_TYPE_MASK; 1064 1065 DRM_DEBUG_KMS("width[%d]range[%d]\n", pos->w, sc->range); 1066 1067 if (pos->w >= GSC_WIDTH_ITU_709) 1068 if (sc->range) 1069 cfg |= GSC_OUT_RGB_HD_WIDE; 1070 else 1071 cfg |= GSC_OUT_RGB_HD_NARROW; 1072 else 1073 if (sc->range) 1074 cfg |= GSC_OUT_RGB_SD_WIDE; 1075 else 1076 cfg |= GSC_OUT_RGB_SD_NARROW; 1077 1078 gsc_write(cfg, GSC_OUT_CON); 1079 1080 return 0; 1081 } 1082 1083 static int gsc_dst_get_buf_seq(struct gsc_context *ctx) 1084 { 1085 u32 cfg, i, buf_num = GSC_REG_SZ; 1086 u32 mask = 0x00000001; 1087 1088 cfg = gsc_read(GSC_OUT_BASE_ADDR_Y_MASK); 1089 1090 for (i = 0; i < GSC_REG_SZ; i++) 1091 if (cfg & (mask << i)) 1092 buf_num--; 1093 1094 DRM_DEBUG_KMS("buf_num[%d]\n", buf_num); 1095 1096 return buf_num; 1097 } 1098 1099 static int gsc_dst_set_buf_seq(struct gsc_context *ctx, u32 buf_id, 1100 enum drm_exynos_ipp_buf_type buf_type) 1101 { 1102 struct exynos_drm_ippdrv *ippdrv = &ctx->ippdrv; 1103 bool masked; 1104 u32 cfg; 1105 u32 mask = 0x00000001 << buf_id; 1106 int ret = 0; 1107 1108 DRM_DEBUG_KMS("buf_id[%d]buf_type[%d]\n", buf_id, buf_type); 1109 1110 mutex_lock(&ctx->lock); 1111 1112 /* mask register set */ 1113 cfg = gsc_read(GSC_OUT_BASE_ADDR_Y_MASK); 1114 1115 switch (buf_type) { 1116 case IPP_BUF_ENQUEUE: 1117 masked = false; 1118 break; 1119 case IPP_BUF_DEQUEUE: 1120 masked = true; 1121 break; 1122 default: 1123 dev_err(ippdrv->dev, "invalid buf ctrl parameter.\n"); 1124 ret = -EINVAL; 1125 goto err_unlock; 1126 } 1127 1128 /* sequence id */ 1129 cfg &= ~mask; 1130 cfg |= masked << buf_id; 1131 gsc_write(cfg, GSC_OUT_BASE_ADDR_Y_MASK); 1132 gsc_write(cfg, GSC_OUT_BASE_ADDR_CB_MASK); 1133 gsc_write(cfg, GSC_OUT_BASE_ADDR_CR_MASK); 1134 1135 /* interrupt enable */ 1136 if (buf_type == IPP_BUF_ENQUEUE && 1137 gsc_dst_get_buf_seq(ctx) >= GSC_BUF_START) 1138 gsc_handle_irq(ctx, true, false, true); 1139 1140 /* interrupt disable */ 1141 if (buf_type == IPP_BUF_DEQUEUE && 1142 gsc_dst_get_buf_seq(ctx) <= GSC_BUF_STOP) 1143 gsc_handle_irq(ctx, false, false, true); 1144 1145 err_unlock: 1146 mutex_unlock(&ctx->lock); 1147 return ret; 1148 } 1149 1150 static int gsc_dst_set_addr(struct device *dev, 1151 struct drm_exynos_ipp_buf_info *buf_info, u32 buf_id, 1152 enum drm_exynos_ipp_buf_type buf_type) 1153 { 1154 struct gsc_context *ctx = get_gsc_context(dev); 1155 struct exynos_drm_ippdrv *ippdrv = &ctx->ippdrv; 1156 struct drm_exynos_ipp_cmd_node *c_node = ippdrv->c_node; 1157 struct drm_exynos_ipp_property *property; 1158 1159 if (!c_node) { 1160 DRM_ERROR("failed to get c_node.\n"); 1161 return -EFAULT; 1162 } 1163 1164 property = &c_node->property; 1165 1166 DRM_DEBUG_KMS("prop_id[%d]buf_id[%d]buf_type[%d]\n", 1167 property->prop_id, buf_id, buf_type); 1168 1169 if (buf_id > GSC_MAX_DST) { 1170 dev_info(ippdrv->dev, "inavlid buf_id %d.\n", buf_id); 1171 return -EINVAL; 1172 } 1173 1174 /* address register set */ 1175 switch (buf_type) { 1176 case IPP_BUF_ENQUEUE: 1177 gsc_write(buf_info->base[EXYNOS_DRM_PLANAR_Y], 1178 GSC_OUT_BASE_ADDR_Y(buf_id)); 1179 gsc_write(buf_info->base[EXYNOS_DRM_PLANAR_CB], 1180 GSC_OUT_BASE_ADDR_CB(buf_id)); 1181 gsc_write(buf_info->base[EXYNOS_DRM_PLANAR_CR], 1182 GSC_OUT_BASE_ADDR_CR(buf_id)); 1183 break; 1184 case IPP_BUF_DEQUEUE: 1185 gsc_write(0x0, GSC_OUT_BASE_ADDR_Y(buf_id)); 1186 gsc_write(0x0, GSC_OUT_BASE_ADDR_CB(buf_id)); 1187 gsc_write(0x0, GSC_OUT_BASE_ADDR_CR(buf_id)); 1188 break; 1189 default: 1190 /* bypass */ 1191 break; 1192 } 1193 1194 return gsc_dst_set_buf_seq(ctx, buf_id, buf_type); 1195 } 1196 1197 static struct exynos_drm_ipp_ops gsc_dst_ops = { 1198 .set_fmt = gsc_dst_set_fmt, 1199 .set_transf = gsc_dst_set_transf, 1200 .set_size = gsc_dst_set_size, 1201 .set_addr = gsc_dst_set_addr, 1202 }; 1203 1204 static int gsc_clk_ctrl(struct gsc_context *ctx, bool enable) 1205 { 1206 DRM_DEBUG_KMS("enable[%d]\n", enable); 1207 1208 if (enable) { 1209 clk_enable(ctx->gsc_clk); 1210 ctx->suspended = false; 1211 } else { 1212 clk_disable(ctx->gsc_clk); 1213 ctx->suspended = true; 1214 } 1215 1216 return 0; 1217 } 1218 1219 static int gsc_get_src_buf_index(struct gsc_context *ctx) 1220 { 1221 u32 cfg, curr_index, i; 1222 u32 buf_id = GSC_MAX_SRC; 1223 int ret; 1224 1225 DRM_DEBUG_KMS("gsc id[%d]\n", ctx->id); 1226 1227 cfg = gsc_read(GSC_IN_BASE_ADDR_Y_MASK); 1228 curr_index = GSC_IN_CURR_GET_INDEX(cfg); 1229 1230 for (i = curr_index; i < GSC_MAX_SRC; i++) { 1231 if (!((cfg >> i) & 0x1)) { 1232 buf_id = i; 1233 break; 1234 } 1235 } 1236 1237 if (buf_id == GSC_MAX_SRC) { 1238 DRM_ERROR("failed to get in buffer index.\n"); 1239 return -EINVAL; 1240 } 1241 1242 ret = gsc_src_set_buf_seq(ctx, buf_id, IPP_BUF_DEQUEUE); 1243 if (ret < 0) { 1244 DRM_ERROR("failed to dequeue.\n"); 1245 return ret; 1246 } 1247 1248 DRM_DEBUG_KMS("cfg[0x%x]curr_index[%d]buf_id[%d]\n", cfg, 1249 curr_index, buf_id); 1250 1251 return buf_id; 1252 } 1253 1254 static int gsc_get_dst_buf_index(struct gsc_context *ctx) 1255 { 1256 u32 cfg, curr_index, i; 1257 u32 buf_id = GSC_MAX_DST; 1258 int ret; 1259 1260 DRM_DEBUG_KMS("gsc id[%d]\n", ctx->id); 1261 1262 cfg = gsc_read(GSC_OUT_BASE_ADDR_Y_MASK); 1263 curr_index = GSC_OUT_CURR_GET_INDEX(cfg); 1264 1265 for (i = curr_index; i < GSC_MAX_DST; i++) { 1266 if (!((cfg >> i) & 0x1)) { 1267 buf_id = i; 1268 break; 1269 } 1270 } 1271 1272 if (buf_id == GSC_MAX_DST) { 1273 DRM_ERROR("failed to get out buffer index.\n"); 1274 return -EINVAL; 1275 } 1276 1277 ret = gsc_dst_set_buf_seq(ctx, buf_id, IPP_BUF_DEQUEUE); 1278 if (ret < 0) { 1279 DRM_ERROR("failed to dequeue.\n"); 1280 return ret; 1281 } 1282 1283 DRM_DEBUG_KMS("cfg[0x%x]curr_index[%d]buf_id[%d]\n", cfg, 1284 curr_index, buf_id); 1285 1286 return buf_id; 1287 } 1288 1289 static irqreturn_t gsc_irq_handler(int irq, void *dev_id) 1290 { 1291 struct gsc_context *ctx = dev_id; 1292 struct exynos_drm_ippdrv *ippdrv = &ctx->ippdrv; 1293 struct drm_exynos_ipp_cmd_node *c_node = ippdrv->c_node; 1294 struct drm_exynos_ipp_event_work *event_work = 1295 c_node->event_work; 1296 u32 status; 1297 int buf_id[EXYNOS_DRM_OPS_MAX]; 1298 1299 DRM_DEBUG_KMS("gsc id[%d]\n", ctx->id); 1300 1301 status = gsc_read(GSC_IRQ); 1302 if (status & GSC_IRQ_STATUS_OR_IRQ) { 1303 dev_err(ippdrv->dev, "occured overflow at %d, status 0x%x.\n", 1304 ctx->id, status); 1305 return IRQ_NONE; 1306 } 1307 1308 if (status & GSC_IRQ_STATUS_OR_FRM_DONE) { 1309 dev_dbg(ippdrv->dev, "occured frame done at %d, status 0x%x.\n", 1310 ctx->id, status); 1311 1312 buf_id[EXYNOS_DRM_OPS_SRC] = gsc_get_src_buf_index(ctx); 1313 if (buf_id[EXYNOS_DRM_OPS_SRC] < 0) 1314 return IRQ_HANDLED; 1315 1316 buf_id[EXYNOS_DRM_OPS_DST] = gsc_get_dst_buf_index(ctx); 1317 if (buf_id[EXYNOS_DRM_OPS_DST] < 0) 1318 return IRQ_HANDLED; 1319 1320 DRM_DEBUG_KMS("buf_id_src[%d]buf_id_dst[%d]\n", 1321 buf_id[EXYNOS_DRM_OPS_SRC], buf_id[EXYNOS_DRM_OPS_DST]); 1322 1323 event_work->ippdrv = ippdrv; 1324 event_work->buf_id[EXYNOS_DRM_OPS_SRC] = 1325 buf_id[EXYNOS_DRM_OPS_SRC]; 1326 event_work->buf_id[EXYNOS_DRM_OPS_DST] = 1327 buf_id[EXYNOS_DRM_OPS_DST]; 1328 queue_work(ippdrv->event_workq, 1329 (struct work_struct *)event_work); 1330 } 1331 1332 return IRQ_HANDLED; 1333 } 1334 1335 static int gsc_init_prop_list(struct exynos_drm_ippdrv *ippdrv) 1336 { 1337 struct drm_exynos_ipp_prop_list *prop_list; 1338 1339 prop_list = devm_kzalloc(ippdrv->dev, sizeof(*prop_list), GFP_KERNEL); 1340 if (!prop_list) { 1341 DRM_ERROR("failed to alloc property list.\n"); 1342 return -ENOMEM; 1343 } 1344 1345 prop_list->version = 1; 1346 prop_list->writeback = 1; 1347 prop_list->refresh_min = GSC_REFRESH_MIN; 1348 prop_list->refresh_max = GSC_REFRESH_MAX; 1349 prop_list->flip = (1 << EXYNOS_DRM_FLIP_VERTICAL) | 1350 (1 << EXYNOS_DRM_FLIP_HORIZONTAL); 1351 prop_list->degree = (1 << EXYNOS_DRM_DEGREE_0) | 1352 (1 << EXYNOS_DRM_DEGREE_90) | 1353 (1 << EXYNOS_DRM_DEGREE_180) | 1354 (1 << EXYNOS_DRM_DEGREE_270); 1355 prop_list->csc = 1; 1356 prop_list->crop = 1; 1357 prop_list->crop_max.hsize = GSC_CROP_MAX; 1358 prop_list->crop_max.vsize = GSC_CROP_MAX; 1359 prop_list->crop_min.hsize = GSC_CROP_MIN; 1360 prop_list->crop_min.vsize = GSC_CROP_MIN; 1361 prop_list->scale = 1; 1362 prop_list->scale_max.hsize = GSC_SCALE_MAX; 1363 prop_list->scale_max.vsize = GSC_SCALE_MAX; 1364 prop_list->scale_min.hsize = GSC_SCALE_MIN; 1365 prop_list->scale_min.vsize = GSC_SCALE_MIN; 1366 1367 ippdrv->prop_list = prop_list; 1368 1369 return 0; 1370 } 1371 1372 static inline bool gsc_check_drm_flip(enum drm_exynos_flip flip) 1373 { 1374 switch (flip) { 1375 case EXYNOS_DRM_FLIP_NONE: 1376 case EXYNOS_DRM_FLIP_VERTICAL: 1377 case EXYNOS_DRM_FLIP_HORIZONTAL: 1378 case EXYNOS_DRM_FLIP_BOTH: 1379 return true; 1380 default: 1381 DRM_DEBUG_KMS("invalid flip\n"); 1382 return false; 1383 } 1384 } 1385 1386 static int gsc_ippdrv_check_property(struct device *dev, 1387 struct drm_exynos_ipp_property *property) 1388 { 1389 struct gsc_context *ctx = get_gsc_context(dev); 1390 struct exynos_drm_ippdrv *ippdrv = &ctx->ippdrv; 1391 struct drm_exynos_ipp_prop_list *pp = ippdrv->prop_list; 1392 struct drm_exynos_ipp_config *config; 1393 struct drm_exynos_pos *pos; 1394 struct drm_exynos_sz *sz; 1395 bool swap; 1396 int i; 1397 1398 for_each_ipp_ops(i) { 1399 if ((i == EXYNOS_DRM_OPS_SRC) && 1400 (property->cmd == IPP_CMD_WB)) 1401 continue; 1402 1403 config = &property->config[i]; 1404 pos = &config->pos; 1405 sz = &config->sz; 1406 1407 /* check for flip */ 1408 if (!gsc_check_drm_flip(config->flip)) { 1409 DRM_ERROR("invalid flip.\n"); 1410 goto err_property; 1411 } 1412 1413 /* check for degree */ 1414 switch (config->degree) { 1415 case EXYNOS_DRM_DEGREE_90: 1416 case EXYNOS_DRM_DEGREE_270: 1417 swap = true; 1418 break; 1419 case EXYNOS_DRM_DEGREE_0: 1420 case EXYNOS_DRM_DEGREE_180: 1421 swap = false; 1422 break; 1423 default: 1424 DRM_ERROR("invalid degree.\n"); 1425 goto err_property; 1426 } 1427 1428 /* check for buffer bound */ 1429 if ((pos->x + pos->w > sz->hsize) || 1430 (pos->y + pos->h > sz->vsize)) { 1431 DRM_ERROR("out of buf bound.\n"); 1432 goto err_property; 1433 } 1434 1435 /* check for crop */ 1436 if ((i == EXYNOS_DRM_OPS_SRC) && (pp->crop)) { 1437 if (swap) { 1438 if ((pos->h < pp->crop_min.hsize) || 1439 (sz->vsize > pp->crop_max.hsize) || 1440 (pos->w < pp->crop_min.vsize) || 1441 (sz->hsize > pp->crop_max.vsize)) { 1442 DRM_ERROR("out of crop size.\n"); 1443 goto err_property; 1444 } 1445 } else { 1446 if ((pos->w < pp->crop_min.hsize) || 1447 (sz->hsize > pp->crop_max.hsize) || 1448 (pos->h < pp->crop_min.vsize) || 1449 (sz->vsize > pp->crop_max.vsize)) { 1450 DRM_ERROR("out of crop size.\n"); 1451 goto err_property; 1452 } 1453 } 1454 } 1455 1456 /* check for scale */ 1457 if ((i == EXYNOS_DRM_OPS_DST) && (pp->scale)) { 1458 if (swap) { 1459 if ((pos->h < pp->scale_min.hsize) || 1460 (sz->vsize > pp->scale_max.hsize) || 1461 (pos->w < pp->scale_min.vsize) || 1462 (sz->hsize > pp->scale_max.vsize)) { 1463 DRM_ERROR("out of scale size.\n"); 1464 goto err_property; 1465 } 1466 } else { 1467 if ((pos->w < pp->scale_min.hsize) || 1468 (sz->hsize > pp->scale_max.hsize) || 1469 (pos->h < pp->scale_min.vsize) || 1470 (sz->vsize > pp->scale_max.vsize)) { 1471 DRM_ERROR("out of scale size.\n"); 1472 goto err_property; 1473 } 1474 } 1475 } 1476 } 1477 1478 return 0; 1479 1480 err_property: 1481 for_each_ipp_ops(i) { 1482 if ((i == EXYNOS_DRM_OPS_SRC) && 1483 (property->cmd == IPP_CMD_WB)) 1484 continue; 1485 1486 config = &property->config[i]; 1487 pos = &config->pos; 1488 sz = &config->sz; 1489 1490 DRM_ERROR("[%s]f[%d]r[%d]pos[%d %d %d %d]sz[%d %d]\n", 1491 i ? "dst" : "src", config->flip, config->degree, 1492 pos->x, pos->y, pos->w, pos->h, 1493 sz->hsize, sz->vsize); 1494 } 1495 1496 return -EINVAL; 1497 } 1498 1499 1500 static int gsc_ippdrv_reset(struct device *dev) 1501 { 1502 struct gsc_context *ctx = get_gsc_context(dev); 1503 struct gsc_scaler *sc = &ctx->sc; 1504 int ret; 1505 1506 /* reset h/w block */ 1507 ret = gsc_sw_reset(ctx); 1508 if (ret < 0) { 1509 dev_err(dev, "failed to reset hardware.\n"); 1510 return ret; 1511 } 1512 1513 /* scaler setting */ 1514 memset(&ctx->sc, 0x0, sizeof(ctx->sc)); 1515 sc->range = true; 1516 1517 return 0; 1518 } 1519 1520 static int gsc_ippdrv_start(struct device *dev, enum drm_exynos_ipp_cmd cmd) 1521 { 1522 struct gsc_context *ctx = get_gsc_context(dev); 1523 struct exynos_drm_ippdrv *ippdrv = &ctx->ippdrv; 1524 struct drm_exynos_ipp_cmd_node *c_node = ippdrv->c_node; 1525 struct drm_exynos_ipp_property *property; 1526 struct drm_exynos_ipp_config *config; 1527 struct drm_exynos_pos img_pos[EXYNOS_DRM_OPS_MAX]; 1528 struct drm_exynos_ipp_set_wb set_wb; 1529 u32 cfg; 1530 int ret, i; 1531 1532 DRM_DEBUG_KMS("cmd[%d]\n", cmd); 1533 1534 if (!c_node) { 1535 DRM_ERROR("failed to get c_node.\n"); 1536 return -EINVAL; 1537 } 1538 1539 property = &c_node->property; 1540 1541 gsc_handle_irq(ctx, true, false, true); 1542 1543 for_each_ipp_ops(i) { 1544 config = &property->config[i]; 1545 img_pos[i] = config->pos; 1546 } 1547 1548 switch (cmd) { 1549 case IPP_CMD_M2M: 1550 /* enable one shot */ 1551 cfg = gsc_read(GSC_ENABLE); 1552 cfg &= ~(GSC_ENABLE_ON_CLEAR_MASK | 1553 GSC_ENABLE_CLK_GATE_MODE_MASK); 1554 cfg |= GSC_ENABLE_ON_CLEAR_ONESHOT; 1555 gsc_write(cfg, GSC_ENABLE); 1556 1557 /* src dma memory */ 1558 cfg = gsc_read(GSC_IN_CON); 1559 cfg &= ~(GSC_IN_PATH_MASK | GSC_IN_LOCAL_SEL_MASK); 1560 cfg |= GSC_IN_PATH_MEMORY; 1561 gsc_write(cfg, GSC_IN_CON); 1562 1563 /* dst dma memory */ 1564 cfg = gsc_read(GSC_OUT_CON); 1565 cfg |= GSC_OUT_PATH_MEMORY; 1566 gsc_write(cfg, GSC_OUT_CON); 1567 break; 1568 case IPP_CMD_WB: 1569 set_wb.enable = 1; 1570 set_wb.refresh = property->refresh_rate; 1571 gsc_set_gscblk_fimd_wb(ctx, set_wb.enable); 1572 exynos_drm_ippnb_send_event(IPP_SET_WRITEBACK, (void *)&set_wb); 1573 1574 /* src local path */ 1575 cfg = gsc_read(GSC_IN_CON); 1576 cfg &= ~(GSC_IN_PATH_MASK | GSC_IN_LOCAL_SEL_MASK); 1577 cfg |= (GSC_IN_PATH_LOCAL | GSC_IN_LOCAL_FIMD_WB); 1578 gsc_write(cfg, GSC_IN_CON); 1579 1580 /* dst dma memory */ 1581 cfg = gsc_read(GSC_OUT_CON); 1582 cfg |= GSC_OUT_PATH_MEMORY; 1583 gsc_write(cfg, GSC_OUT_CON); 1584 break; 1585 case IPP_CMD_OUTPUT: 1586 /* src dma memory */ 1587 cfg = gsc_read(GSC_IN_CON); 1588 cfg &= ~(GSC_IN_PATH_MASK | GSC_IN_LOCAL_SEL_MASK); 1589 cfg |= GSC_IN_PATH_MEMORY; 1590 gsc_write(cfg, GSC_IN_CON); 1591 1592 /* dst local path */ 1593 cfg = gsc_read(GSC_OUT_CON); 1594 cfg |= GSC_OUT_PATH_MEMORY; 1595 gsc_write(cfg, GSC_OUT_CON); 1596 break; 1597 default: 1598 ret = -EINVAL; 1599 dev_err(dev, "invalid operations.\n"); 1600 return ret; 1601 } 1602 1603 ret = gsc_set_prescaler(ctx, &ctx->sc, 1604 &img_pos[EXYNOS_DRM_OPS_SRC], 1605 &img_pos[EXYNOS_DRM_OPS_DST]); 1606 if (ret) { 1607 dev_err(dev, "failed to set precalser.\n"); 1608 return ret; 1609 } 1610 1611 gsc_set_scaler(ctx, &ctx->sc); 1612 1613 cfg = gsc_read(GSC_ENABLE); 1614 cfg |= GSC_ENABLE_ON; 1615 gsc_write(cfg, GSC_ENABLE); 1616 1617 return 0; 1618 } 1619 1620 static void gsc_ippdrv_stop(struct device *dev, enum drm_exynos_ipp_cmd cmd) 1621 { 1622 struct gsc_context *ctx = get_gsc_context(dev); 1623 struct drm_exynos_ipp_set_wb set_wb = {0, 0}; 1624 u32 cfg; 1625 1626 DRM_DEBUG_KMS("cmd[%d]\n", cmd); 1627 1628 switch (cmd) { 1629 case IPP_CMD_M2M: 1630 /* bypass */ 1631 break; 1632 case IPP_CMD_WB: 1633 gsc_set_gscblk_fimd_wb(ctx, set_wb.enable); 1634 exynos_drm_ippnb_send_event(IPP_SET_WRITEBACK, (void *)&set_wb); 1635 break; 1636 case IPP_CMD_OUTPUT: 1637 default: 1638 dev_err(dev, "invalid operations.\n"); 1639 break; 1640 } 1641 1642 gsc_handle_irq(ctx, false, false, true); 1643 1644 /* reset sequence */ 1645 gsc_write(0xff, GSC_OUT_BASE_ADDR_Y_MASK); 1646 gsc_write(0xff, GSC_OUT_BASE_ADDR_CB_MASK); 1647 gsc_write(0xff, GSC_OUT_BASE_ADDR_CR_MASK); 1648 1649 cfg = gsc_read(GSC_ENABLE); 1650 cfg &= ~GSC_ENABLE_ON; 1651 gsc_write(cfg, GSC_ENABLE); 1652 } 1653 1654 static int gsc_probe(struct platform_device *pdev) 1655 { 1656 struct device *dev = &pdev->dev; 1657 struct gsc_context *ctx; 1658 struct resource *res; 1659 struct exynos_drm_ippdrv *ippdrv; 1660 int ret; 1661 1662 ctx = devm_kzalloc(dev, sizeof(*ctx), GFP_KERNEL); 1663 if (!ctx) 1664 return -ENOMEM; 1665 1666 /* clock control */ 1667 ctx->gsc_clk = devm_clk_get(dev, "gscl"); 1668 if (IS_ERR(ctx->gsc_clk)) { 1669 dev_err(dev, "failed to get gsc clock.\n"); 1670 return PTR_ERR(ctx->gsc_clk); 1671 } 1672 1673 /* resource memory */ 1674 ctx->regs_res = platform_get_resource(pdev, IORESOURCE_MEM, 0); 1675 ctx->regs = devm_ioremap_resource(dev, ctx->regs_res); 1676 if (IS_ERR(ctx->regs)) 1677 return PTR_ERR(ctx->regs); 1678 1679 /* resource irq */ 1680 res = platform_get_resource(pdev, IORESOURCE_IRQ, 0); 1681 if (!res) { 1682 dev_err(dev, "failed to request irq resource.\n"); 1683 return -ENOENT; 1684 } 1685 1686 ctx->irq = res->start; 1687 ret = devm_request_threaded_irq(dev, ctx->irq, NULL, gsc_irq_handler, 1688 IRQF_ONESHOT, "drm_gsc", ctx); 1689 if (ret < 0) { 1690 dev_err(dev, "failed to request irq.\n"); 1691 return ret; 1692 } 1693 1694 /* context initailization */ 1695 ctx->id = pdev->id; 1696 1697 ippdrv = &ctx->ippdrv; 1698 ippdrv->dev = dev; 1699 ippdrv->ops[EXYNOS_DRM_OPS_SRC] = &gsc_src_ops; 1700 ippdrv->ops[EXYNOS_DRM_OPS_DST] = &gsc_dst_ops; 1701 ippdrv->check_property = gsc_ippdrv_check_property; 1702 ippdrv->reset = gsc_ippdrv_reset; 1703 ippdrv->start = gsc_ippdrv_start; 1704 ippdrv->stop = gsc_ippdrv_stop; 1705 ret = gsc_init_prop_list(ippdrv); 1706 if (ret < 0) { 1707 dev_err(dev, "failed to init property list.\n"); 1708 return ret; 1709 } 1710 1711 DRM_DEBUG_KMS("id[%d]ippdrv[0x%x]\n", ctx->id, (int)ippdrv); 1712 1713 mutex_init(&ctx->lock); 1714 platform_set_drvdata(pdev, ctx); 1715 1716 pm_runtime_set_active(dev); 1717 pm_runtime_enable(dev); 1718 1719 ret = exynos_drm_ippdrv_register(ippdrv); 1720 if (ret < 0) { 1721 dev_err(dev, "failed to register drm gsc device.\n"); 1722 goto err_ippdrv_register; 1723 } 1724 1725 dev_info(dev, "drm gsc registered successfully.\n"); 1726 1727 return 0; 1728 1729 err_ippdrv_register: 1730 pm_runtime_disable(dev); 1731 return ret; 1732 } 1733 1734 static int gsc_remove(struct platform_device *pdev) 1735 { 1736 struct device *dev = &pdev->dev; 1737 struct gsc_context *ctx = get_gsc_context(dev); 1738 struct exynos_drm_ippdrv *ippdrv = &ctx->ippdrv; 1739 1740 exynos_drm_ippdrv_unregister(ippdrv); 1741 mutex_destroy(&ctx->lock); 1742 1743 pm_runtime_set_suspended(dev); 1744 pm_runtime_disable(dev); 1745 1746 return 0; 1747 } 1748 1749 #ifdef CONFIG_PM_SLEEP 1750 static int gsc_suspend(struct device *dev) 1751 { 1752 struct gsc_context *ctx = get_gsc_context(dev); 1753 1754 DRM_DEBUG_KMS("id[%d]\n", ctx->id); 1755 1756 if (pm_runtime_suspended(dev)) 1757 return 0; 1758 1759 return gsc_clk_ctrl(ctx, false); 1760 } 1761 1762 static int gsc_resume(struct device *dev) 1763 { 1764 struct gsc_context *ctx = get_gsc_context(dev); 1765 1766 DRM_DEBUG_KMS("id[%d]\n", ctx->id); 1767 1768 if (!pm_runtime_suspended(dev)) 1769 return gsc_clk_ctrl(ctx, true); 1770 1771 return 0; 1772 } 1773 #endif 1774 1775 #ifdef CONFIG_PM_RUNTIME 1776 static int gsc_runtime_suspend(struct device *dev) 1777 { 1778 struct gsc_context *ctx = get_gsc_context(dev); 1779 1780 DRM_DEBUG_KMS("id[%d]\n", ctx->id); 1781 1782 return gsc_clk_ctrl(ctx, false); 1783 } 1784 1785 static int gsc_runtime_resume(struct device *dev) 1786 { 1787 struct gsc_context *ctx = get_gsc_context(dev); 1788 1789 DRM_DEBUG_KMS("id[%d]\n", ctx->id); 1790 1791 return gsc_clk_ctrl(ctx, true); 1792 } 1793 #endif 1794 1795 static const struct dev_pm_ops gsc_pm_ops = { 1796 SET_SYSTEM_SLEEP_PM_OPS(gsc_suspend, gsc_resume) 1797 SET_RUNTIME_PM_OPS(gsc_runtime_suspend, gsc_runtime_resume, NULL) 1798 }; 1799 1800 struct platform_driver gsc_driver = { 1801 .probe = gsc_probe, 1802 .remove = gsc_remove, 1803 .driver = { 1804 .name = "exynos-drm-gsc", 1805 .owner = THIS_MODULE, 1806 .pm = &gsc_pm_ops, 1807 }, 1808 }; 1809 1810