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