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/module.h> 16 #include <linux/platform_device.h> 17 #include <linux/clk.h> 18 #include <linux/pm_runtime.h> 19 #include <plat/map-base.h> 20 21 #include <drm/drmP.h> 22 #include <drm/exynos_drm.h> 23 #include "regs-gsc.h" 24 #include "exynos_drm_ipp.h" 25 #include "exynos_drm_gsc.h" 26 27 /* 28 * GSC is stand 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 DRM_DEBUG_KMS("%s\n", __func__); 404 405 /* s/w reset */ 406 cfg = (GSC_SW_RESET_SRESET); 407 gsc_write(cfg, GSC_SW_RESET); 408 409 /* wait s/w reset complete */ 410 while (count--) { 411 cfg = gsc_read(GSC_SW_RESET); 412 if (!cfg) 413 break; 414 usleep_range(1000, 2000); 415 } 416 417 if (cfg) { 418 DRM_ERROR("failed to reset gsc h/w.\n"); 419 return -EBUSY; 420 } 421 422 /* reset sequence */ 423 cfg = gsc_read(GSC_IN_BASE_ADDR_Y_MASK); 424 cfg |= (GSC_IN_BASE_ADDR_MASK | 425 GSC_IN_BASE_ADDR_PINGPONG(0)); 426 gsc_write(cfg, GSC_IN_BASE_ADDR_Y_MASK); 427 gsc_write(cfg, GSC_IN_BASE_ADDR_CB_MASK); 428 gsc_write(cfg, GSC_IN_BASE_ADDR_CR_MASK); 429 430 cfg = gsc_read(GSC_OUT_BASE_ADDR_Y_MASK); 431 cfg |= (GSC_OUT_BASE_ADDR_MASK | 432 GSC_OUT_BASE_ADDR_PINGPONG(0)); 433 gsc_write(cfg, GSC_OUT_BASE_ADDR_Y_MASK); 434 gsc_write(cfg, GSC_OUT_BASE_ADDR_CB_MASK); 435 gsc_write(cfg, GSC_OUT_BASE_ADDR_CR_MASK); 436 437 return 0; 438 } 439 440 static void gsc_set_gscblk_fimd_wb(struct gsc_context *ctx, bool enable) 441 { 442 u32 gscblk_cfg; 443 444 DRM_DEBUG_KMS("%s\n", __func__); 445 446 gscblk_cfg = readl(SYSREG_GSCBLK_CFG1); 447 448 if (enable) 449 gscblk_cfg |= GSC_BLK_DISP1WB_DEST(ctx->id) | 450 GSC_BLK_GSCL_WB_IN_SRC_SEL(ctx->id) | 451 GSC_BLK_SW_RESET_WB_DEST(ctx->id); 452 else 453 gscblk_cfg |= GSC_BLK_PXLASYNC_LO_MASK_WB(ctx->id); 454 455 writel(gscblk_cfg, SYSREG_GSCBLK_CFG1); 456 } 457 458 static void gsc_handle_irq(struct gsc_context *ctx, bool enable, 459 bool overflow, bool done) 460 { 461 u32 cfg; 462 463 DRM_DEBUG_KMS("%s:enable[%d]overflow[%d]level[%d]\n", __func__, 464 enable, overflow, done); 465 466 cfg = gsc_read(GSC_IRQ); 467 cfg |= (GSC_IRQ_OR_MASK | GSC_IRQ_FRMDONE_MASK); 468 469 if (enable) 470 cfg |= GSC_IRQ_ENABLE; 471 else 472 cfg &= ~GSC_IRQ_ENABLE; 473 474 if (overflow) 475 cfg &= ~GSC_IRQ_OR_MASK; 476 else 477 cfg |= GSC_IRQ_OR_MASK; 478 479 if (done) 480 cfg &= ~GSC_IRQ_FRMDONE_MASK; 481 else 482 cfg |= GSC_IRQ_FRMDONE_MASK; 483 484 gsc_write(cfg, GSC_IRQ); 485 } 486 487 488 static int gsc_src_set_fmt(struct device *dev, u32 fmt) 489 { 490 struct gsc_context *ctx = get_gsc_context(dev); 491 struct exynos_drm_ippdrv *ippdrv = &ctx->ippdrv; 492 u32 cfg; 493 494 DRM_DEBUG_KMS("%s:fmt[0x%x]\n", __func__, fmt); 495 496 cfg = gsc_read(GSC_IN_CON); 497 cfg &= ~(GSC_IN_RGB_TYPE_MASK | GSC_IN_YUV422_1P_ORDER_MASK | 498 GSC_IN_CHROMA_ORDER_MASK | GSC_IN_FORMAT_MASK | 499 GSC_IN_TILE_TYPE_MASK | GSC_IN_TILE_MODE | 500 GSC_IN_CHROM_STRIDE_SEL_MASK | GSC_IN_RB_SWAP_MASK); 501 502 switch (fmt) { 503 case DRM_FORMAT_RGB565: 504 cfg |= GSC_IN_RGB565; 505 break; 506 case DRM_FORMAT_XRGB8888: 507 cfg |= GSC_IN_XRGB8888; 508 break; 509 case DRM_FORMAT_BGRX8888: 510 cfg |= (GSC_IN_XRGB8888 | GSC_IN_RB_SWAP); 511 break; 512 case DRM_FORMAT_YUYV: 513 cfg |= (GSC_IN_YUV422_1P | 514 GSC_IN_YUV422_1P_ORDER_LSB_Y | 515 GSC_IN_CHROMA_ORDER_CBCR); 516 break; 517 case DRM_FORMAT_YVYU: 518 cfg |= (GSC_IN_YUV422_1P | 519 GSC_IN_YUV422_1P_ORDER_LSB_Y | 520 GSC_IN_CHROMA_ORDER_CRCB); 521 break; 522 case DRM_FORMAT_UYVY: 523 cfg |= (GSC_IN_YUV422_1P | 524 GSC_IN_YUV422_1P_OEDER_LSB_C | 525 GSC_IN_CHROMA_ORDER_CBCR); 526 break; 527 case DRM_FORMAT_VYUY: 528 cfg |= (GSC_IN_YUV422_1P | 529 GSC_IN_YUV422_1P_OEDER_LSB_C | 530 GSC_IN_CHROMA_ORDER_CRCB); 531 break; 532 case DRM_FORMAT_NV21: 533 case DRM_FORMAT_NV61: 534 cfg |= (GSC_IN_CHROMA_ORDER_CRCB | 535 GSC_IN_YUV420_2P); 536 break; 537 case DRM_FORMAT_YUV422: 538 cfg |= GSC_IN_YUV422_3P; 539 break; 540 case DRM_FORMAT_YUV420: 541 case DRM_FORMAT_YVU420: 542 cfg |= GSC_IN_YUV420_3P; 543 break; 544 case DRM_FORMAT_NV12: 545 case DRM_FORMAT_NV16: 546 cfg |= (GSC_IN_CHROMA_ORDER_CBCR | 547 GSC_IN_YUV420_2P); 548 break; 549 case DRM_FORMAT_NV12MT: 550 cfg |= (GSC_IN_TILE_C_16x8 | GSC_IN_TILE_MODE); 551 break; 552 default: 553 dev_err(ippdrv->dev, "inavlid target yuv order 0x%x.\n", fmt); 554 return -EINVAL; 555 } 556 557 gsc_write(cfg, GSC_IN_CON); 558 559 return 0; 560 } 561 562 static int gsc_src_set_transf(struct device *dev, 563 enum drm_exynos_degree degree, 564 enum drm_exynos_flip flip, bool *swap) 565 { 566 struct gsc_context *ctx = get_gsc_context(dev); 567 struct exynos_drm_ippdrv *ippdrv = &ctx->ippdrv; 568 u32 cfg; 569 570 DRM_DEBUG_KMS("%s:degree[%d]flip[0x%x]\n", __func__, 571 degree, flip); 572 573 cfg = gsc_read(GSC_IN_CON); 574 cfg &= ~GSC_IN_ROT_MASK; 575 576 switch (degree) { 577 case EXYNOS_DRM_DEGREE_0: 578 if (flip & EXYNOS_DRM_FLIP_VERTICAL) 579 cfg |= GSC_IN_ROT_XFLIP; 580 if (flip & EXYNOS_DRM_FLIP_HORIZONTAL) 581 cfg |= GSC_IN_ROT_YFLIP; 582 break; 583 case EXYNOS_DRM_DEGREE_90: 584 if (flip & EXYNOS_DRM_FLIP_VERTICAL) 585 cfg |= GSC_IN_ROT_90_XFLIP; 586 else if (flip & EXYNOS_DRM_FLIP_HORIZONTAL) 587 cfg |= GSC_IN_ROT_90_YFLIP; 588 else 589 cfg |= GSC_IN_ROT_90; 590 break; 591 case EXYNOS_DRM_DEGREE_180: 592 cfg |= GSC_IN_ROT_180; 593 break; 594 case EXYNOS_DRM_DEGREE_270: 595 cfg |= GSC_IN_ROT_270; 596 break; 597 default: 598 dev_err(ippdrv->dev, "inavlid degree value %d.\n", degree); 599 return -EINVAL; 600 } 601 602 gsc_write(cfg, GSC_IN_CON); 603 604 ctx->rotation = cfg & 605 (GSC_IN_ROT_90 | GSC_IN_ROT_270) ? 1 : 0; 606 *swap = ctx->rotation; 607 608 return 0; 609 } 610 611 static int gsc_src_set_size(struct device *dev, int swap, 612 struct drm_exynos_pos *pos, struct drm_exynos_sz *sz) 613 { 614 struct gsc_context *ctx = get_gsc_context(dev); 615 struct drm_exynos_pos img_pos = *pos; 616 struct gsc_scaler *sc = &ctx->sc; 617 u32 cfg; 618 619 DRM_DEBUG_KMS("%s:swap[%d]x[%d]y[%d]w[%d]h[%d]\n", 620 __func__, swap, pos->x, pos->y, pos->w, pos->h); 621 622 if (swap) { 623 img_pos.w = pos->h; 624 img_pos.h = pos->w; 625 } 626 627 /* pixel offset */ 628 cfg = (GSC_SRCIMG_OFFSET_X(img_pos.x) | 629 GSC_SRCIMG_OFFSET_Y(img_pos.y)); 630 gsc_write(cfg, GSC_SRCIMG_OFFSET); 631 632 /* cropped size */ 633 cfg = (GSC_CROPPED_WIDTH(img_pos.w) | 634 GSC_CROPPED_HEIGHT(img_pos.h)); 635 gsc_write(cfg, GSC_CROPPED_SIZE); 636 637 DRM_DEBUG_KMS("%s:hsize[%d]vsize[%d]\n", 638 __func__, sz->hsize, sz->vsize); 639 640 /* original size */ 641 cfg = gsc_read(GSC_SRCIMG_SIZE); 642 cfg &= ~(GSC_SRCIMG_HEIGHT_MASK | 643 GSC_SRCIMG_WIDTH_MASK); 644 645 cfg |= (GSC_SRCIMG_WIDTH(sz->hsize) | 646 GSC_SRCIMG_HEIGHT(sz->vsize)); 647 648 gsc_write(cfg, GSC_SRCIMG_SIZE); 649 650 cfg = gsc_read(GSC_IN_CON); 651 cfg &= ~GSC_IN_RGB_TYPE_MASK; 652 653 DRM_DEBUG_KMS("%s:width[%d]range[%d]\n", 654 __func__, pos->w, sc->range); 655 656 if (pos->w >= GSC_WIDTH_ITU_709) 657 if (sc->range) 658 cfg |= GSC_IN_RGB_HD_WIDE; 659 else 660 cfg |= GSC_IN_RGB_HD_NARROW; 661 else 662 if (sc->range) 663 cfg |= GSC_IN_RGB_SD_WIDE; 664 else 665 cfg |= GSC_IN_RGB_SD_NARROW; 666 667 gsc_write(cfg, GSC_IN_CON); 668 669 return 0; 670 } 671 672 static int gsc_src_set_buf_seq(struct gsc_context *ctx, u32 buf_id, 673 enum drm_exynos_ipp_buf_type buf_type) 674 { 675 struct exynos_drm_ippdrv *ippdrv = &ctx->ippdrv; 676 bool masked; 677 u32 cfg; 678 u32 mask = 0x00000001 << buf_id; 679 680 DRM_DEBUG_KMS("%s:buf_id[%d]buf_type[%d]\n", __func__, 681 buf_id, buf_type); 682 683 /* mask register set */ 684 cfg = gsc_read(GSC_IN_BASE_ADDR_Y_MASK); 685 686 switch (buf_type) { 687 case IPP_BUF_ENQUEUE: 688 masked = false; 689 break; 690 case IPP_BUF_DEQUEUE: 691 masked = true; 692 break; 693 default: 694 dev_err(ippdrv->dev, "invalid buf ctrl parameter.\n"); 695 return -EINVAL; 696 } 697 698 /* sequence id */ 699 cfg &= ~mask; 700 cfg |= masked << buf_id; 701 gsc_write(cfg, GSC_IN_BASE_ADDR_Y_MASK); 702 gsc_write(cfg, GSC_IN_BASE_ADDR_CB_MASK); 703 gsc_write(cfg, GSC_IN_BASE_ADDR_CR_MASK); 704 705 return 0; 706 } 707 708 static int gsc_src_set_addr(struct device *dev, 709 struct drm_exynos_ipp_buf_info *buf_info, u32 buf_id, 710 enum drm_exynos_ipp_buf_type buf_type) 711 { 712 struct gsc_context *ctx = get_gsc_context(dev); 713 struct exynos_drm_ippdrv *ippdrv = &ctx->ippdrv; 714 struct drm_exynos_ipp_cmd_node *c_node = ippdrv->cmd; 715 struct drm_exynos_ipp_property *property; 716 717 if (!c_node) { 718 DRM_ERROR("failed to get c_node.\n"); 719 return -EFAULT; 720 } 721 722 property = &c_node->property; 723 if (!property) { 724 DRM_ERROR("failed to get property.\n"); 725 return -EFAULT; 726 } 727 728 DRM_DEBUG_KMS("%s:prop_id[%d]buf_id[%d]buf_type[%d]\n", __func__, 729 property->prop_id, buf_id, buf_type); 730 731 if (buf_id > GSC_MAX_SRC) { 732 dev_info(ippdrv->dev, "inavlid buf_id %d.\n", buf_id); 733 return -EINVAL; 734 } 735 736 /* address register set */ 737 switch (buf_type) { 738 case IPP_BUF_ENQUEUE: 739 gsc_write(buf_info->base[EXYNOS_DRM_PLANAR_Y], 740 GSC_IN_BASE_ADDR_Y(buf_id)); 741 gsc_write(buf_info->base[EXYNOS_DRM_PLANAR_CB], 742 GSC_IN_BASE_ADDR_CB(buf_id)); 743 gsc_write(buf_info->base[EXYNOS_DRM_PLANAR_CR], 744 GSC_IN_BASE_ADDR_CR(buf_id)); 745 break; 746 case IPP_BUF_DEQUEUE: 747 gsc_write(0x0, GSC_IN_BASE_ADDR_Y(buf_id)); 748 gsc_write(0x0, GSC_IN_BASE_ADDR_CB(buf_id)); 749 gsc_write(0x0, GSC_IN_BASE_ADDR_CR(buf_id)); 750 break; 751 default: 752 /* bypass */ 753 break; 754 } 755 756 return gsc_src_set_buf_seq(ctx, buf_id, buf_type); 757 } 758 759 static struct exynos_drm_ipp_ops gsc_src_ops = { 760 .set_fmt = gsc_src_set_fmt, 761 .set_transf = gsc_src_set_transf, 762 .set_size = gsc_src_set_size, 763 .set_addr = gsc_src_set_addr, 764 }; 765 766 static int gsc_dst_set_fmt(struct device *dev, u32 fmt) 767 { 768 struct gsc_context *ctx = get_gsc_context(dev); 769 struct exynos_drm_ippdrv *ippdrv = &ctx->ippdrv; 770 u32 cfg; 771 772 DRM_DEBUG_KMS("%s:fmt[0x%x]\n", __func__, fmt); 773 774 cfg = gsc_read(GSC_OUT_CON); 775 cfg &= ~(GSC_OUT_RGB_TYPE_MASK | GSC_OUT_YUV422_1P_ORDER_MASK | 776 GSC_OUT_CHROMA_ORDER_MASK | GSC_OUT_FORMAT_MASK | 777 GSC_OUT_CHROM_STRIDE_SEL_MASK | GSC_OUT_RB_SWAP_MASK | 778 GSC_OUT_GLOBAL_ALPHA_MASK); 779 780 switch (fmt) { 781 case DRM_FORMAT_RGB565: 782 cfg |= GSC_OUT_RGB565; 783 break; 784 case DRM_FORMAT_XRGB8888: 785 cfg |= GSC_OUT_XRGB8888; 786 break; 787 case DRM_FORMAT_BGRX8888: 788 cfg |= (GSC_OUT_XRGB8888 | GSC_OUT_RB_SWAP); 789 break; 790 case DRM_FORMAT_YUYV: 791 cfg |= (GSC_OUT_YUV422_1P | 792 GSC_OUT_YUV422_1P_ORDER_LSB_Y | 793 GSC_OUT_CHROMA_ORDER_CBCR); 794 break; 795 case DRM_FORMAT_YVYU: 796 cfg |= (GSC_OUT_YUV422_1P | 797 GSC_OUT_YUV422_1P_ORDER_LSB_Y | 798 GSC_OUT_CHROMA_ORDER_CRCB); 799 break; 800 case DRM_FORMAT_UYVY: 801 cfg |= (GSC_OUT_YUV422_1P | 802 GSC_OUT_YUV422_1P_OEDER_LSB_C | 803 GSC_OUT_CHROMA_ORDER_CBCR); 804 break; 805 case DRM_FORMAT_VYUY: 806 cfg |= (GSC_OUT_YUV422_1P | 807 GSC_OUT_YUV422_1P_OEDER_LSB_C | 808 GSC_OUT_CHROMA_ORDER_CRCB); 809 break; 810 case DRM_FORMAT_NV21: 811 case DRM_FORMAT_NV61: 812 cfg |= (GSC_OUT_CHROMA_ORDER_CRCB | GSC_OUT_YUV420_2P); 813 break; 814 case DRM_FORMAT_YUV422: 815 case DRM_FORMAT_YUV420: 816 case DRM_FORMAT_YVU420: 817 cfg |= GSC_OUT_YUV420_3P; 818 break; 819 case DRM_FORMAT_NV12: 820 case DRM_FORMAT_NV16: 821 cfg |= (GSC_OUT_CHROMA_ORDER_CBCR | 822 GSC_OUT_YUV420_2P); 823 break; 824 case DRM_FORMAT_NV12MT: 825 cfg |= (GSC_OUT_TILE_C_16x8 | GSC_OUT_TILE_MODE); 826 break; 827 default: 828 dev_err(ippdrv->dev, "inavlid target yuv order 0x%x.\n", fmt); 829 return -EINVAL; 830 } 831 832 gsc_write(cfg, GSC_OUT_CON); 833 834 return 0; 835 } 836 837 static int gsc_dst_set_transf(struct device *dev, 838 enum drm_exynos_degree degree, 839 enum drm_exynos_flip flip, bool *swap) 840 { 841 struct gsc_context *ctx = get_gsc_context(dev); 842 struct exynos_drm_ippdrv *ippdrv = &ctx->ippdrv; 843 u32 cfg; 844 845 DRM_DEBUG_KMS("%s:degree[%d]flip[0x%x]\n", __func__, 846 degree, flip); 847 848 cfg = gsc_read(GSC_IN_CON); 849 cfg &= ~GSC_IN_ROT_MASK; 850 851 switch (degree) { 852 case EXYNOS_DRM_DEGREE_0: 853 if (flip & EXYNOS_DRM_FLIP_VERTICAL) 854 cfg |= GSC_IN_ROT_XFLIP; 855 if (flip & EXYNOS_DRM_FLIP_HORIZONTAL) 856 cfg |= GSC_IN_ROT_YFLIP; 857 break; 858 case EXYNOS_DRM_DEGREE_90: 859 if (flip & EXYNOS_DRM_FLIP_VERTICAL) 860 cfg |= GSC_IN_ROT_90_XFLIP; 861 else if (flip & EXYNOS_DRM_FLIP_HORIZONTAL) 862 cfg |= GSC_IN_ROT_90_YFLIP; 863 else 864 cfg |= GSC_IN_ROT_90; 865 break; 866 case EXYNOS_DRM_DEGREE_180: 867 cfg |= GSC_IN_ROT_180; 868 break; 869 case EXYNOS_DRM_DEGREE_270: 870 cfg |= GSC_IN_ROT_270; 871 break; 872 default: 873 dev_err(ippdrv->dev, "inavlid degree value %d.\n", degree); 874 return -EINVAL; 875 } 876 877 gsc_write(cfg, GSC_IN_CON); 878 879 ctx->rotation = cfg & 880 (GSC_IN_ROT_90 | GSC_IN_ROT_270) ? 1 : 0; 881 *swap = ctx->rotation; 882 883 return 0; 884 } 885 886 static int gsc_get_ratio_shift(u32 src, u32 dst, u32 *ratio) 887 { 888 DRM_DEBUG_KMS("%s:src[%d]dst[%d]\n", __func__, src, dst); 889 890 if (src >= dst * 8) { 891 DRM_ERROR("failed to make ratio and shift.\n"); 892 return -EINVAL; 893 } else if (src >= dst * 4) 894 *ratio = 4; 895 else if (src >= dst * 2) 896 *ratio = 2; 897 else 898 *ratio = 1; 899 900 return 0; 901 } 902 903 static void gsc_get_prescaler_shfactor(u32 hratio, u32 vratio, u32 *shfactor) 904 { 905 if (hratio == 4 && vratio == 4) 906 *shfactor = 4; 907 else if ((hratio == 4 && vratio == 2) || 908 (hratio == 2 && vratio == 4)) 909 *shfactor = 3; 910 else if ((hratio == 4 && vratio == 1) || 911 (hratio == 1 && vratio == 4) || 912 (hratio == 2 && vratio == 2)) 913 *shfactor = 2; 914 else if (hratio == 1 && vratio == 1) 915 *shfactor = 0; 916 else 917 *shfactor = 1; 918 } 919 920 static int gsc_set_prescaler(struct gsc_context *ctx, struct gsc_scaler *sc, 921 struct drm_exynos_pos *src, struct drm_exynos_pos *dst) 922 { 923 struct exynos_drm_ippdrv *ippdrv = &ctx->ippdrv; 924 u32 cfg; 925 u32 src_w, src_h, dst_w, dst_h; 926 int ret = 0; 927 928 src_w = src->w; 929 src_h = src->h; 930 931 if (ctx->rotation) { 932 dst_w = dst->h; 933 dst_h = dst->w; 934 } else { 935 dst_w = dst->w; 936 dst_h = dst->h; 937 } 938 939 ret = gsc_get_ratio_shift(src_w, dst_w, &sc->pre_hratio); 940 if (ret) { 941 dev_err(ippdrv->dev, "failed to get ratio horizontal.\n"); 942 return ret; 943 } 944 945 ret = gsc_get_ratio_shift(src_h, dst_h, &sc->pre_vratio); 946 if (ret) { 947 dev_err(ippdrv->dev, "failed to get ratio vertical.\n"); 948 return ret; 949 } 950 951 DRM_DEBUG_KMS("%s:pre_hratio[%d]pre_vratio[%d]\n", 952 __func__, sc->pre_hratio, sc->pre_vratio); 953 954 sc->main_hratio = (src_w << 16) / dst_w; 955 sc->main_vratio = (src_h << 16) / dst_h; 956 957 DRM_DEBUG_KMS("%s:main_hratio[%ld]main_vratio[%ld]\n", 958 __func__, sc->main_hratio, sc->main_vratio); 959 960 gsc_get_prescaler_shfactor(sc->pre_hratio, sc->pre_vratio, 961 &sc->pre_shfactor); 962 963 DRM_DEBUG_KMS("%s:pre_shfactor[%d]\n", __func__, 964 sc->pre_shfactor); 965 966 cfg = (GSC_PRESC_SHFACTOR(sc->pre_shfactor) | 967 GSC_PRESC_H_RATIO(sc->pre_hratio) | 968 GSC_PRESC_V_RATIO(sc->pre_vratio)); 969 gsc_write(cfg, GSC_PRE_SCALE_RATIO); 970 971 return ret; 972 } 973 974 static void gsc_set_h_coef(struct gsc_context *ctx, unsigned long main_hratio) 975 { 976 int i, j, k, sc_ratio; 977 978 if (main_hratio <= GSC_SC_UP_MAX_RATIO) 979 sc_ratio = 0; 980 else if (main_hratio <= GSC_SC_DOWN_RATIO_7_8) 981 sc_ratio = 1; 982 else if (main_hratio <= GSC_SC_DOWN_RATIO_6_8) 983 sc_ratio = 2; 984 else if (main_hratio <= GSC_SC_DOWN_RATIO_5_8) 985 sc_ratio = 3; 986 else if (main_hratio <= GSC_SC_DOWN_RATIO_4_8) 987 sc_ratio = 4; 988 else if (main_hratio <= GSC_SC_DOWN_RATIO_3_8) 989 sc_ratio = 5; 990 else 991 sc_ratio = 6; 992 993 for (i = 0; i < GSC_COEF_PHASE; i++) 994 for (j = 0; j < GSC_COEF_H_8T; j++) 995 for (k = 0; k < GSC_COEF_DEPTH; k++) 996 gsc_write(h_coef_8t[sc_ratio][i][j], 997 GSC_HCOEF(i, j, k)); 998 } 999 1000 static void gsc_set_v_coef(struct gsc_context *ctx, unsigned long main_vratio) 1001 { 1002 int i, j, k, sc_ratio; 1003 1004 if (main_vratio <= GSC_SC_UP_MAX_RATIO) 1005 sc_ratio = 0; 1006 else if (main_vratio <= GSC_SC_DOWN_RATIO_7_8) 1007 sc_ratio = 1; 1008 else if (main_vratio <= GSC_SC_DOWN_RATIO_6_8) 1009 sc_ratio = 2; 1010 else if (main_vratio <= GSC_SC_DOWN_RATIO_5_8) 1011 sc_ratio = 3; 1012 else if (main_vratio <= GSC_SC_DOWN_RATIO_4_8) 1013 sc_ratio = 4; 1014 else if (main_vratio <= GSC_SC_DOWN_RATIO_3_8) 1015 sc_ratio = 5; 1016 else 1017 sc_ratio = 6; 1018 1019 for (i = 0; i < GSC_COEF_PHASE; i++) 1020 for (j = 0; j < GSC_COEF_V_4T; j++) 1021 for (k = 0; k < GSC_COEF_DEPTH; k++) 1022 gsc_write(v_coef_4t[sc_ratio][i][j], 1023 GSC_VCOEF(i, j, k)); 1024 } 1025 1026 static void gsc_set_scaler(struct gsc_context *ctx, struct gsc_scaler *sc) 1027 { 1028 u32 cfg; 1029 1030 DRM_DEBUG_KMS("%s:main_hratio[%ld]main_vratio[%ld]\n", 1031 __func__, sc->main_hratio, sc->main_vratio); 1032 1033 gsc_set_h_coef(ctx, sc->main_hratio); 1034 cfg = GSC_MAIN_H_RATIO_VALUE(sc->main_hratio); 1035 gsc_write(cfg, GSC_MAIN_H_RATIO); 1036 1037 gsc_set_v_coef(ctx, sc->main_vratio); 1038 cfg = GSC_MAIN_V_RATIO_VALUE(sc->main_vratio); 1039 gsc_write(cfg, GSC_MAIN_V_RATIO); 1040 } 1041 1042 static int gsc_dst_set_size(struct device *dev, int swap, 1043 struct drm_exynos_pos *pos, struct drm_exynos_sz *sz) 1044 { 1045 struct gsc_context *ctx = get_gsc_context(dev); 1046 struct drm_exynos_pos img_pos = *pos; 1047 struct gsc_scaler *sc = &ctx->sc; 1048 u32 cfg; 1049 1050 DRM_DEBUG_KMS("%s:swap[%d]x[%d]y[%d]w[%d]h[%d]\n", 1051 __func__, swap, pos->x, pos->y, pos->w, pos->h); 1052 1053 if (swap) { 1054 img_pos.w = pos->h; 1055 img_pos.h = pos->w; 1056 } 1057 1058 /* pixel offset */ 1059 cfg = (GSC_DSTIMG_OFFSET_X(pos->x) | 1060 GSC_DSTIMG_OFFSET_Y(pos->y)); 1061 gsc_write(cfg, GSC_DSTIMG_OFFSET); 1062 1063 /* scaled size */ 1064 cfg = (GSC_SCALED_WIDTH(img_pos.w) | GSC_SCALED_HEIGHT(img_pos.h)); 1065 gsc_write(cfg, GSC_SCALED_SIZE); 1066 1067 DRM_DEBUG_KMS("%s:hsize[%d]vsize[%d]\n", 1068 __func__, sz->hsize, sz->vsize); 1069 1070 /* original size */ 1071 cfg = gsc_read(GSC_DSTIMG_SIZE); 1072 cfg &= ~(GSC_DSTIMG_HEIGHT_MASK | 1073 GSC_DSTIMG_WIDTH_MASK); 1074 cfg |= (GSC_DSTIMG_WIDTH(sz->hsize) | 1075 GSC_DSTIMG_HEIGHT(sz->vsize)); 1076 gsc_write(cfg, GSC_DSTIMG_SIZE); 1077 1078 cfg = gsc_read(GSC_OUT_CON); 1079 cfg &= ~GSC_OUT_RGB_TYPE_MASK; 1080 1081 DRM_DEBUG_KMS("%s:width[%d]range[%d]\n", 1082 __func__, pos->w, sc->range); 1083 1084 if (pos->w >= GSC_WIDTH_ITU_709) 1085 if (sc->range) 1086 cfg |= GSC_OUT_RGB_HD_WIDE; 1087 else 1088 cfg |= GSC_OUT_RGB_HD_NARROW; 1089 else 1090 if (sc->range) 1091 cfg |= GSC_OUT_RGB_SD_WIDE; 1092 else 1093 cfg |= GSC_OUT_RGB_SD_NARROW; 1094 1095 gsc_write(cfg, GSC_OUT_CON); 1096 1097 return 0; 1098 } 1099 1100 static int gsc_dst_get_buf_seq(struct gsc_context *ctx) 1101 { 1102 u32 cfg, i, buf_num = GSC_REG_SZ; 1103 u32 mask = 0x00000001; 1104 1105 cfg = gsc_read(GSC_OUT_BASE_ADDR_Y_MASK); 1106 1107 for (i = 0; i < GSC_REG_SZ; i++) 1108 if (cfg & (mask << i)) 1109 buf_num--; 1110 1111 DRM_DEBUG_KMS("%s:buf_num[%d]\n", __func__, buf_num); 1112 1113 return buf_num; 1114 } 1115 1116 static int gsc_dst_set_buf_seq(struct gsc_context *ctx, u32 buf_id, 1117 enum drm_exynos_ipp_buf_type buf_type) 1118 { 1119 struct exynos_drm_ippdrv *ippdrv = &ctx->ippdrv; 1120 bool masked; 1121 u32 cfg; 1122 u32 mask = 0x00000001 << buf_id; 1123 int ret = 0; 1124 1125 DRM_DEBUG_KMS("%s:buf_id[%d]buf_type[%d]\n", __func__, 1126 buf_id, buf_type); 1127 1128 mutex_lock(&ctx->lock); 1129 1130 /* mask register set */ 1131 cfg = gsc_read(GSC_OUT_BASE_ADDR_Y_MASK); 1132 1133 switch (buf_type) { 1134 case IPP_BUF_ENQUEUE: 1135 masked = false; 1136 break; 1137 case IPP_BUF_DEQUEUE: 1138 masked = true; 1139 break; 1140 default: 1141 dev_err(ippdrv->dev, "invalid buf ctrl parameter.\n"); 1142 ret = -EINVAL; 1143 goto err_unlock; 1144 } 1145 1146 /* sequence id */ 1147 cfg &= ~mask; 1148 cfg |= masked << buf_id; 1149 gsc_write(cfg, GSC_OUT_BASE_ADDR_Y_MASK); 1150 gsc_write(cfg, GSC_OUT_BASE_ADDR_CB_MASK); 1151 gsc_write(cfg, GSC_OUT_BASE_ADDR_CR_MASK); 1152 1153 /* interrupt enable */ 1154 if (buf_type == IPP_BUF_ENQUEUE && 1155 gsc_dst_get_buf_seq(ctx) >= GSC_BUF_START) 1156 gsc_handle_irq(ctx, true, false, true); 1157 1158 /* interrupt disable */ 1159 if (buf_type == IPP_BUF_DEQUEUE && 1160 gsc_dst_get_buf_seq(ctx) <= GSC_BUF_STOP) 1161 gsc_handle_irq(ctx, false, false, true); 1162 1163 err_unlock: 1164 mutex_unlock(&ctx->lock); 1165 return ret; 1166 } 1167 1168 static int gsc_dst_set_addr(struct device *dev, 1169 struct drm_exynos_ipp_buf_info *buf_info, u32 buf_id, 1170 enum drm_exynos_ipp_buf_type buf_type) 1171 { 1172 struct gsc_context *ctx = get_gsc_context(dev); 1173 struct exynos_drm_ippdrv *ippdrv = &ctx->ippdrv; 1174 struct drm_exynos_ipp_cmd_node *c_node = ippdrv->cmd; 1175 struct drm_exynos_ipp_property *property; 1176 1177 if (!c_node) { 1178 DRM_ERROR("failed to get c_node.\n"); 1179 return -EFAULT; 1180 } 1181 1182 property = &c_node->property; 1183 if (!property) { 1184 DRM_ERROR("failed to get property.\n"); 1185 return -EFAULT; 1186 } 1187 1188 DRM_DEBUG_KMS("%s:prop_id[%d]buf_id[%d]buf_type[%d]\n", __func__, 1189 property->prop_id, buf_id, buf_type); 1190 1191 if (buf_id > GSC_MAX_DST) { 1192 dev_info(ippdrv->dev, "inavlid buf_id %d.\n", buf_id); 1193 return -EINVAL; 1194 } 1195 1196 /* address register set */ 1197 switch (buf_type) { 1198 case IPP_BUF_ENQUEUE: 1199 gsc_write(buf_info->base[EXYNOS_DRM_PLANAR_Y], 1200 GSC_OUT_BASE_ADDR_Y(buf_id)); 1201 gsc_write(buf_info->base[EXYNOS_DRM_PLANAR_CB], 1202 GSC_OUT_BASE_ADDR_CB(buf_id)); 1203 gsc_write(buf_info->base[EXYNOS_DRM_PLANAR_CR], 1204 GSC_OUT_BASE_ADDR_CR(buf_id)); 1205 break; 1206 case IPP_BUF_DEQUEUE: 1207 gsc_write(0x0, GSC_OUT_BASE_ADDR_Y(buf_id)); 1208 gsc_write(0x0, GSC_OUT_BASE_ADDR_CB(buf_id)); 1209 gsc_write(0x0, GSC_OUT_BASE_ADDR_CR(buf_id)); 1210 break; 1211 default: 1212 /* bypass */ 1213 break; 1214 } 1215 1216 return gsc_dst_set_buf_seq(ctx, buf_id, buf_type); 1217 } 1218 1219 static struct exynos_drm_ipp_ops gsc_dst_ops = { 1220 .set_fmt = gsc_dst_set_fmt, 1221 .set_transf = gsc_dst_set_transf, 1222 .set_size = gsc_dst_set_size, 1223 .set_addr = gsc_dst_set_addr, 1224 }; 1225 1226 static int gsc_clk_ctrl(struct gsc_context *ctx, bool enable) 1227 { 1228 DRM_DEBUG_KMS("%s:enable[%d]\n", __func__, enable); 1229 1230 if (enable) { 1231 clk_enable(ctx->gsc_clk); 1232 ctx->suspended = false; 1233 } else { 1234 clk_disable(ctx->gsc_clk); 1235 ctx->suspended = true; 1236 } 1237 1238 return 0; 1239 } 1240 1241 static int gsc_get_src_buf_index(struct gsc_context *ctx) 1242 { 1243 u32 cfg, curr_index, i; 1244 u32 buf_id = GSC_MAX_SRC; 1245 int ret; 1246 1247 DRM_DEBUG_KMS("%s:gsc id[%d]\n", __func__, ctx->id); 1248 1249 cfg = gsc_read(GSC_IN_BASE_ADDR_Y_MASK); 1250 curr_index = GSC_IN_CURR_GET_INDEX(cfg); 1251 1252 for (i = curr_index; i < GSC_MAX_SRC; i++) { 1253 if (!((cfg >> i) & 0x1)) { 1254 buf_id = i; 1255 break; 1256 } 1257 } 1258 1259 if (buf_id == GSC_MAX_SRC) { 1260 DRM_ERROR("failed to get in buffer index.\n"); 1261 return -EINVAL; 1262 } 1263 1264 ret = gsc_src_set_buf_seq(ctx, buf_id, IPP_BUF_DEQUEUE); 1265 if (ret < 0) { 1266 DRM_ERROR("failed to dequeue.\n"); 1267 return ret; 1268 } 1269 1270 DRM_DEBUG_KMS("%s:cfg[0x%x]curr_index[%d]buf_id[%d]\n", __func__, cfg, 1271 curr_index, buf_id); 1272 1273 return buf_id; 1274 } 1275 1276 static int gsc_get_dst_buf_index(struct gsc_context *ctx) 1277 { 1278 u32 cfg, curr_index, i; 1279 u32 buf_id = GSC_MAX_DST; 1280 int ret; 1281 1282 DRM_DEBUG_KMS("%s:gsc id[%d]\n", __func__, ctx->id); 1283 1284 cfg = gsc_read(GSC_OUT_BASE_ADDR_Y_MASK); 1285 curr_index = GSC_OUT_CURR_GET_INDEX(cfg); 1286 1287 for (i = curr_index; i < GSC_MAX_DST; i++) { 1288 if (!((cfg >> i) & 0x1)) { 1289 buf_id = i; 1290 break; 1291 } 1292 } 1293 1294 if (buf_id == GSC_MAX_DST) { 1295 DRM_ERROR("failed to get out buffer index.\n"); 1296 return -EINVAL; 1297 } 1298 1299 ret = gsc_dst_set_buf_seq(ctx, buf_id, IPP_BUF_DEQUEUE); 1300 if (ret < 0) { 1301 DRM_ERROR("failed to dequeue.\n"); 1302 return ret; 1303 } 1304 1305 DRM_DEBUG_KMS("%s:cfg[0x%x]curr_index[%d]buf_id[%d]\n", __func__, cfg, 1306 curr_index, buf_id); 1307 1308 return buf_id; 1309 } 1310 1311 static irqreturn_t gsc_irq_handler(int irq, void *dev_id) 1312 { 1313 struct gsc_context *ctx = dev_id; 1314 struct exynos_drm_ippdrv *ippdrv = &ctx->ippdrv; 1315 struct drm_exynos_ipp_cmd_node *c_node = ippdrv->cmd; 1316 struct drm_exynos_ipp_event_work *event_work = 1317 c_node->event_work; 1318 u32 status; 1319 int buf_id[EXYNOS_DRM_OPS_MAX]; 1320 1321 DRM_DEBUG_KMS("%s:gsc id[%d]\n", __func__, ctx->id); 1322 1323 status = gsc_read(GSC_IRQ); 1324 if (status & GSC_IRQ_STATUS_OR_IRQ) { 1325 dev_err(ippdrv->dev, "occured overflow at %d, status 0x%x.\n", 1326 ctx->id, status); 1327 return IRQ_NONE; 1328 } 1329 1330 if (status & GSC_IRQ_STATUS_OR_FRM_DONE) { 1331 dev_dbg(ippdrv->dev, "occured frame done at %d, status 0x%x.\n", 1332 ctx->id, status); 1333 1334 buf_id[EXYNOS_DRM_OPS_SRC] = gsc_get_src_buf_index(ctx); 1335 if (buf_id[EXYNOS_DRM_OPS_SRC] < 0) 1336 return IRQ_HANDLED; 1337 1338 buf_id[EXYNOS_DRM_OPS_DST] = gsc_get_dst_buf_index(ctx); 1339 if (buf_id[EXYNOS_DRM_OPS_DST] < 0) 1340 return IRQ_HANDLED; 1341 1342 DRM_DEBUG_KMS("%s:buf_id_src[%d]buf_id_dst[%d]\n", __func__, 1343 buf_id[EXYNOS_DRM_OPS_SRC], buf_id[EXYNOS_DRM_OPS_DST]); 1344 1345 event_work->ippdrv = ippdrv; 1346 event_work->buf_id[EXYNOS_DRM_OPS_SRC] = 1347 buf_id[EXYNOS_DRM_OPS_SRC]; 1348 event_work->buf_id[EXYNOS_DRM_OPS_DST] = 1349 buf_id[EXYNOS_DRM_OPS_DST]; 1350 queue_work(ippdrv->event_workq, 1351 (struct work_struct *)event_work); 1352 } 1353 1354 return IRQ_HANDLED; 1355 } 1356 1357 static int gsc_init_prop_list(struct exynos_drm_ippdrv *ippdrv) 1358 { 1359 struct drm_exynos_ipp_prop_list *prop_list; 1360 1361 DRM_DEBUG_KMS("%s\n", __func__); 1362 1363 prop_list = devm_kzalloc(ippdrv->dev, sizeof(*prop_list), GFP_KERNEL); 1364 if (!prop_list) { 1365 DRM_ERROR("failed to alloc property list.\n"); 1366 return -ENOMEM; 1367 } 1368 1369 prop_list->version = 1; 1370 prop_list->writeback = 1; 1371 prop_list->refresh_min = GSC_REFRESH_MIN; 1372 prop_list->refresh_max = GSC_REFRESH_MAX; 1373 prop_list->flip = (1 << EXYNOS_DRM_FLIP_VERTICAL) | 1374 (1 << EXYNOS_DRM_FLIP_HORIZONTAL); 1375 prop_list->degree = (1 << EXYNOS_DRM_DEGREE_0) | 1376 (1 << EXYNOS_DRM_DEGREE_90) | 1377 (1 << EXYNOS_DRM_DEGREE_180) | 1378 (1 << EXYNOS_DRM_DEGREE_270); 1379 prop_list->csc = 1; 1380 prop_list->crop = 1; 1381 prop_list->crop_max.hsize = GSC_CROP_MAX; 1382 prop_list->crop_max.vsize = GSC_CROP_MAX; 1383 prop_list->crop_min.hsize = GSC_CROP_MIN; 1384 prop_list->crop_min.vsize = GSC_CROP_MIN; 1385 prop_list->scale = 1; 1386 prop_list->scale_max.hsize = GSC_SCALE_MAX; 1387 prop_list->scale_max.vsize = GSC_SCALE_MAX; 1388 prop_list->scale_min.hsize = GSC_SCALE_MIN; 1389 prop_list->scale_min.vsize = GSC_SCALE_MIN; 1390 1391 ippdrv->prop_list = prop_list; 1392 1393 return 0; 1394 } 1395 1396 static inline bool gsc_check_drm_flip(enum drm_exynos_flip flip) 1397 { 1398 switch (flip) { 1399 case EXYNOS_DRM_FLIP_NONE: 1400 case EXYNOS_DRM_FLIP_VERTICAL: 1401 case EXYNOS_DRM_FLIP_HORIZONTAL: 1402 case EXYNOS_DRM_FLIP_VERTICAL | EXYNOS_DRM_FLIP_HORIZONTAL: 1403 return true; 1404 default: 1405 DRM_DEBUG_KMS("%s:invalid flip\n", __func__); 1406 return false; 1407 } 1408 } 1409 1410 static int gsc_ippdrv_check_property(struct device *dev, 1411 struct drm_exynos_ipp_property *property) 1412 { 1413 struct gsc_context *ctx = get_gsc_context(dev); 1414 struct exynos_drm_ippdrv *ippdrv = &ctx->ippdrv; 1415 struct drm_exynos_ipp_prop_list *pp = ippdrv->prop_list; 1416 struct drm_exynos_ipp_config *config; 1417 struct drm_exynos_pos *pos; 1418 struct drm_exynos_sz *sz; 1419 bool swap; 1420 int i; 1421 1422 DRM_DEBUG_KMS("%s\n", __func__); 1423 1424 for_each_ipp_ops(i) { 1425 if ((i == EXYNOS_DRM_OPS_SRC) && 1426 (property->cmd == IPP_CMD_WB)) 1427 continue; 1428 1429 config = &property->config[i]; 1430 pos = &config->pos; 1431 sz = &config->sz; 1432 1433 /* check for flip */ 1434 if (!gsc_check_drm_flip(config->flip)) { 1435 DRM_ERROR("invalid flip.\n"); 1436 goto err_property; 1437 } 1438 1439 /* check for degree */ 1440 switch (config->degree) { 1441 case EXYNOS_DRM_DEGREE_90: 1442 case EXYNOS_DRM_DEGREE_270: 1443 swap = true; 1444 break; 1445 case EXYNOS_DRM_DEGREE_0: 1446 case EXYNOS_DRM_DEGREE_180: 1447 swap = false; 1448 break; 1449 default: 1450 DRM_ERROR("invalid degree.\n"); 1451 goto err_property; 1452 } 1453 1454 /* check for buffer bound */ 1455 if ((pos->x + pos->w > sz->hsize) || 1456 (pos->y + pos->h > sz->vsize)) { 1457 DRM_ERROR("out of buf bound.\n"); 1458 goto err_property; 1459 } 1460 1461 /* check for crop */ 1462 if ((i == EXYNOS_DRM_OPS_SRC) && (pp->crop)) { 1463 if (swap) { 1464 if ((pos->h < pp->crop_min.hsize) || 1465 (sz->vsize > pp->crop_max.hsize) || 1466 (pos->w < pp->crop_min.vsize) || 1467 (sz->hsize > pp->crop_max.vsize)) { 1468 DRM_ERROR("out of crop size.\n"); 1469 goto err_property; 1470 } 1471 } else { 1472 if ((pos->w < pp->crop_min.hsize) || 1473 (sz->hsize > pp->crop_max.hsize) || 1474 (pos->h < pp->crop_min.vsize) || 1475 (sz->vsize > pp->crop_max.vsize)) { 1476 DRM_ERROR("out of crop size.\n"); 1477 goto err_property; 1478 } 1479 } 1480 } 1481 1482 /* check for scale */ 1483 if ((i == EXYNOS_DRM_OPS_DST) && (pp->scale)) { 1484 if (swap) { 1485 if ((pos->h < pp->scale_min.hsize) || 1486 (sz->vsize > pp->scale_max.hsize) || 1487 (pos->w < pp->scale_min.vsize) || 1488 (sz->hsize > pp->scale_max.vsize)) { 1489 DRM_ERROR("out of scale size.\n"); 1490 goto err_property; 1491 } 1492 } else { 1493 if ((pos->w < pp->scale_min.hsize) || 1494 (sz->hsize > pp->scale_max.hsize) || 1495 (pos->h < pp->scale_min.vsize) || 1496 (sz->vsize > pp->scale_max.vsize)) { 1497 DRM_ERROR("out of scale size.\n"); 1498 goto err_property; 1499 } 1500 } 1501 } 1502 } 1503 1504 return 0; 1505 1506 err_property: 1507 for_each_ipp_ops(i) { 1508 if ((i == EXYNOS_DRM_OPS_SRC) && 1509 (property->cmd == IPP_CMD_WB)) 1510 continue; 1511 1512 config = &property->config[i]; 1513 pos = &config->pos; 1514 sz = &config->sz; 1515 1516 DRM_ERROR("[%s]f[%d]r[%d]pos[%d %d %d %d]sz[%d %d]\n", 1517 i ? "dst" : "src", config->flip, config->degree, 1518 pos->x, pos->y, pos->w, pos->h, 1519 sz->hsize, sz->vsize); 1520 } 1521 1522 return -EINVAL; 1523 } 1524 1525 1526 static int gsc_ippdrv_reset(struct device *dev) 1527 { 1528 struct gsc_context *ctx = get_gsc_context(dev); 1529 struct gsc_scaler *sc = &ctx->sc; 1530 int ret; 1531 1532 DRM_DEBUG_KMS("%s\n", __func__); 1533 1534 /* reset h/w block */ 1535 ret = gsc_sw_reset(ctx); 1536 if (ret < 0) { 1537 dev_err(dev, "failed to reset hardware.\n"); 1538 return ret; 1539 } 1540 1541 /* scaler setting */ 1542 memset(&ctx->sc, 0x0, sizeof(ctx->sc)); 1543 sc->range = true; 1544 1545 return 0; 1546 } 1547 1548 static int gsc_ippdrv_start(struct device *dev, enum drm_exynos_ipp_cmd cmd) 1549 { 1550 struct gsc_context *ctx = get_gsc_context(dev); 1551 struct exynos_drm_ippdrv *ippdrv = &ctx->ippdrv; 1552 struct drm_exynos_ipp_cmd_node *c_node = ippdrv->cmd; 1553 struct drm_exynos_ipp_property *property; 1554 struct drm_exynos_ipp_config *config; 1555 struct drm_exynos_pos img_pos[EXYNOS_DRM_OPS_MAX]; 1556 struct drm_exynos_ipp_set_wb set_wb; 1557 u32 cfg; 1558 int ret, i; 1559 1560 DRM_DEBUG_KMS("%s:cmd[%d]\n", __func__, cmd); 1561 1562 if (!c_node) { 1563 DRM_ERROR("failed to get c_node.\n"); 1564 return -EINVAL; 1565 } 1566 1567 property = &c_node->property; 1568 if (!property) { 1569 DRM_ERROR("failed to get property.\n"); 1570 return -EINVAL; 1571 } 1572 1573 gsc_handle_irq(ctx, true, false, true); 1574 1575 for_each_ipp_ops(i) { 1576 config = &property->config[i]; 1577 img_pos[i] = config->pos; 1578 } 1579 1580 switch (cmd) { 1581 case IPP_CMD_M2M: 1582 /* enable one shot */ 1583 cfg = gsc_read(GSC_ENABLE); 1584 cfg &= ~(GSC_ENABLE_ON_CLEAR_MASK | 1585 GSC_ENABLE_CLK_GATE_MODE_MASK); 1586 cfg |= GSC_ENABLE_ON_CLEAR_ONESHOT; 1587 gsc_write(cfg, GSC_ENABLE); 1588 1589 /* src dma memory */ 1590 cfg = gsc_read(GSC_IN_CON); 1591 cfg &= ~(GSC_IN_PATH_MASK | GSC_IN_LOCAL_SEL_MASK); 1592 cfg |= GSC_IN_PATH_MEMORY; 1593 gsc_write(cfg, GSC_IN_CON); 1594 1595 /* dst dma memory */ 1596 cfg = gsc_read(GSC_OUT_CON); 1597 cfg |= GSC_OUT_PATH_MEMORY; 1598 gsc_write(cfg, GSC_OUT_CON); 1599 break; 1600 case IPP_CMD_WB: 1601 set_wb.enable = 1; 1602 set_wb.refresh = property->refresh_rate; 1603 gsc_set_gscblk_fimd_wb(ctx, set_wb.enable); 1604 exynos_drm_ippnb_send_event(IPP_SET_WRITEBACK, (void *)&set_wb); 1605 1606 /* src local path */ 1607 cfg = readl(GSC_IN_CON); 1608 cfg &= ~(GSC_IN_PATH_MASK | GSC_IN_LOCAL_SEL_MASK); 1609 cfg |= (GSC_IN_PATH_LOCAL | GSC_IN_LOCAL_FIMD_WB); 1610 gsc_write(cfg, GSC_IN_CON); 1611 1612 /* dst dma memory */ 1613 cfg = gsc_read(GSC_OUT_CON); 1614 cfg |= GSC_OUT_PATH_MEMORY; 1615 gsc_write(cfg, GSC_OUT_CON); 1616 break; 1617 case IPP_CMD_OUTPUT: 1618 /* src dma memory */ 1619 cfg = gsc_read(GSC_IN_CON); 1620 cfg &= ~(GSC_IN_PATH_MASK | GSC_IN_LOCAL_SEL_MASK); 1621 cfg |= GSC_IN_PATH_MEMORY; 1622 gsc_write(cfg, GSC_IN_CON); 1623 1624 /* dst local path */ 1625 cfg = gsc_read(GSC_OUT_CON); 1626 cfg |= GSC_OUT_PATH_MEMORY; 1627 gsc_write(cfg, GSC_OUT_CON); 1628 break; 1629 default: 1630 ret = -EINVAL; 1631 dev_err(dev, "invalid operations.\n"); 1632 return ret; 1633 } 1634 1635 ret = gsc_set_prescaler(ctx, &ctx->sc, 1636 &img_pos[EXYNOS_DRM_OPS_SRC], 1637 &img_pos[EXYNOS_DRM_OPS_DST]); 1638 if (ret) { 1639 dev_err(dev, "failed to set precalser.\n"); 1640 return ret; 1641 } 1642 1643 gsc_set_scaler(ctx, &ctx->sc); 1644 1645 cfg = gsc_read(GSC_ENABLE); 1646 cfg |= GSC_ENABLE_ON; 1647 gsc_write(cfg, GSC_ENABLE); 1648 1649 return 0; 1650 } 1651 1652 static void gsc_ippdrv_stop(struct device *dev, enum drm_exynos_ipp_cmd cmd) 1653 { 1654 struct gsc_context *ctx = get_gsc_context(dev); 1655 struct drm_exynos_ipp_set_wb set_wb = {0, 0}; 1656 u32 cfg; 1657 1658 DRM_DEBUG_KMS("%s:cmd[%d]\n", __func__, cmd); 1659 1660 switch (cmd) { 1661 case IPP_CMD_M2M: 1662 /* bypass */ 1663 break; 1664 case IPP_CMD_WB: 1665 gsc_set_gscblk_fimd_wb(ctx, set_wb.enable); 1666 exynos_drm_ippnb_send_event(IPP_SET_WRITEBACK, (void *)&set_wb); 1667 break; 1668 case IPP_CMD_OUTPUT: 1669 default: 1670 dev_err(dev, "invalid operations.\n"); 1671 break; 1672 } 1673 1674 gsc_handle_irq(ctx, false, false, true); 1675 1676 /* reset sequence */ 1677 gsc_write(0xff, GSC_OUT_BASE_ADDR_Y_MASK); 1678 gsc_write(0xff, GSC_OUT_BASE_ADDR_CB_MASK); 1679 gsc_write(0xff, GSC_OUT_BASE_ADDR_CR_MASK); 1680 1681 cfg = gsc_read(GSC_ENABLE); 1682 cfg &= ~GSC_ENABLE_ON; 1683 gsc_write(cfg, GSC_ENABLE); 1684 } 1685 1686 static int __devinit gsc_probe(struct platform_device *pdev) 1687 { 1688 struct device *dev = &pdev->dev; 1689 struct gsc_context *ctx; 1690 struct resource *res; 1691 struct exynos_drm_ippdrv *ippdrv; 1692 int ret; 1693 1694 ctx = devm_kzalloc(dev, sizeof(*ctx), GFP_KERNEL); 1695 if (!ctx) 1696 return -ENOMEM; 1697 1698 /* clock control */ 1699 ctx->gsc_clk = clk_get(dev, "gscl"); 1700 if (IS_ERR(ctx->gsc_clk)) { 1701 dev_err(dev, "failed to get gsc clock.\n"); 1702 ret = PTR_ERR(ctx->gsc_clk); 1703 goto err_ctx; 1704 } 1705 1706 /* resource memory */ 1707 ctx->regs_res = platform_get_resource(pdev, IORESOURCE_MEM, 0); 1708 if (!ctx->regs_res) { 1709 dev_err(dev, "failed to find registers.\n"); 1710 ret = -ENOENT; 1711 goto err_clk; 1712 } 1713 1714 ctx->regs = devm_request_and_ioremap(dev, ctx->regs_res); 1715 if (!ctx->regs) { 1716 dev_err(dev, "failed to map registers.\n"); 1717 ret = -ENXIO; 1718 goto err_clk; 1719 } 1720 1721 /* resource irq */ 1722 res = platform_get_resource(pdev, IORESOURCE_IRQ, 0); 1723 if (!res) { 1724 dev_err(dev, "failed to request irq resource.\n"); 1725 ret = -ENOENT; 1726 goto err_get_regs; 1727 } 1728 1729 ctx->irq = res->start; 1730 ret = request_threaded_irq(ctx->irq, NULL, gsc_irq_handler, 1731 IRQF_ONESHOT, "drm_gsc", ctx); 1732 if (ret < 0) { 1733 dev_err(dev, "failed to request irq.\n"); 1734 goto err_get_regs; 1735 } 1736 1737 /* context initailization */ 1738 ctx->id = pdev->id; 1739 1740 ippdrv = &ctx->ippdrv; 1741 ippdrv->dev = dev; 1742 ippdrv->ops[EXYNOS_DRM_OPS_SRC] = &gsc_src_ops; 1743 ippdrv->ops[EXYNOS_DRM_OPS_DST] = &gsc_dst_ops; 1744 ippdrv->check_property = gsc_ippdrv_check_property; 1745 ippdrv->reset = gsc_ippdrv_reset; 1746 ippdrv->start = gsc_ippdrv_start; 1747 ippdrv->stop = gsc_ippdrv_stop; 1748 ret = gsc_init_prop_list(ippdrv); 1749 if (ret < 0) { 1750 dev_err(dev, "failed to init property list.\n"); 1751 goto err_get_irq; 1752 } 1753 1754 DRM_DEBUG_KMS("%s:id[%d]ippdrv[0x%x]\n", __func__, ctx->id, 1755 (int)ippdrv); 1756 1757 mutex_init(&ctx->lock); 1758 platform_set_drvdata(pdev, ctx); 1759 1760 pm_runtime_set_active(dev); 1761 pm_runtime_enable(dev); 1762 1763 ret = exynos_drm_ippdrv_register(ippdrv); 1764 if (ret < 0) { 1765 dev_err(dev, "failed to register drm gsc device.\n"); 1766 goto err_ippdrv_register; 1767 } 1768 1769 dev_info(&pdev->dev, "drm gsc registered successfully.\n"); 1770 1771 return 0; 1772 1773 err_ippdrv_register: 1774 devm_kfree(dev, ippdrv->prop_list); 1775 pm_runtime_disable(dev); 1776 err_get_irq: 1777 free_irq(ctx->irq, ctx); 1778 err_get_regs: 1779 devm_iounmap(dev, ctx->regs); 1780 err_clk: 1781 clk_put(ctx->gsc_clk); 1782 err_ctx: 1783 devm_kfree(dev, ctx); 1784 return ret; 1785 } 1786 1787 static int __devexit gsc_remove(struct platform_device *pdev) 1788 { 1789 struct device *dev = &pdev->dev; 1790 struct gsc_context *ctx = get_gsc_context(dev); 1791 struct exynos_drm_ippdrv *ippdrv = &ctx->ippdrv; 1792 1793 devm_kfree(dev, ippdrv->prop_list); 1794 exynos_drm_ippdrv_unregister(ippdrv); 1795 mutex_destroy(&ctx->lock); 1796 1797 pm_runtime_set_suspended(dev); 1798 pm_runtime_disable(dev); 1799 1800 free_irq(ctx->irq, ctx); 1801 devm_iounmap(dev, ctx->regs); 1802 1803 clk_put(ctx->gsc_clk); 1804 1805 devm_kfree(dev, ctx); 1806 1807 return 0; 1808 } 1809 1810 #ifdef CONFIG_PM_SLEEP 1811 static int gsc_suspend(struct device *dev) 1812 { 1813 struct gsc_context *ctx = get_gsc_context(dev); 1814 1815 DRM_DEBUG_KMS("%s:id[%d]\n", __func__, ctx->id); 1816 1817 if (pm_runtime_suspended(dev)) 1818 return 0; 1819 1820 return gsc_clk_ctrl(ctx, false); 1821 } 1822 1823 static int gsc_resume(struct device *dev) 1824 { 1825 struct gsc_context *ctx = get_gsc_context(dev); 1826 1827 DRM_DEBUG_KMS("%s:id[%d]\n", __func__, ctx->id); 1828 1829 if (!pm_runtime_suspended(dev)) 1830 return gsc_clk_ctrl(ctx, true); 1831 1832 return 0; 1833 } 1834 #endif 1835 1836 #ifdef CONFIG_PM_RUNTIME 1837 static int gsc_runtime_suspend(struct device *dev) 1838 { 1839 struct gsc_context *ctx = get_gsc_context(dev); 1840 1841 DRM_DEBUG_KMS("%s:id[%d]\n", __func__, ctx->id); 1842 1843 return gsc_clk_ctrl(ctx, false); 1844 } 1845 1846 static int gsc_runtime_resume(struct device *dev) 1847 { 1848 struct gsc_context *ctx = get_gsc_context(dev); 1849 1850 DRM_DEBUG_KMS("%s:id[%d]\n", __FILE__, ctx->id); 1851 1852 return gsc_clk_ctrl(ctx, true); 1853 } 1854 #endif 1855 1856 static const struct dev_pm_ops gsc_pm_ops = { 1857 SET_SYSTEM_SLEEP_PM_OPS(gsc_suspend, gsc_resume) 1858 SET_RUNTIME_PM_OPS(gsc_runtime_suspend, gsc_runtime_resume, NULL) 1859 }; 1860 1861 struct platform_driver gsc_driver = { 1862 .probe = gsc_probe, 1863 .remove = __devexit_p(gsc_remove), 1864 .driver = { 1865 .name = "exynos-drm-gsc", 1866 .owner = THIS_MODULE, 1867 .pm = &gsc_pm_ops, 1868 }, 1869 }; 1870 1871