1 // SPDX-License-Identifier: GPL-2.0-or-later 2 /* 3 * Copyright (C) 2012 Samsung Electronics Co.Ltd 4 * Authors: 5 * Eunchul Kim <chulspro.kim@samsung.com> 6 * Jinyoung Jeon <jy0.jeon@samsung.com> 7 * Sangmin Lee <lsmin.lee@samsung.com> 8 */ 9 10 #include <linux/clk.h> 11 #include <linux/component.h> 12 #include <linux/kernel.h> 13 #include <linux/mfd/syscon.h> 14 #include <linux/of_device.h> 15 #include <linux/platform_device.h> 16 #include <linux/pm_runtime.h> 17 #include <linux/regmap.h> 18 19 #include <drm/drm_fourcc.h> 20 #include <drm/drm_print.h> 21 #include <drm/exynos_drm.h> 22 23 #include "exynos_drm_drv.h" 24 #include "exynos_drm_ipp.h" 25 #include "regs-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 35 36 #define GSC_MAX_CLOCKS 8 37 #define GSC_MAX_SRC 4 38 #define GSC_MAX_DST 16 39 #define GSC_RESET_TIMEOUT 50 40 #define GSC_BUF_STOP 1 41 #define GSC_BUF_START 2 42 #define GSC_REG_SZ 16 43 #define GSC_WIDTH_ITU_709 1280 44 #define GSC_SC_UP_MAX_RATIO 65536 45 #define GSC_SC_DOWN_RATIO_7_8 74898 46 #define GSC_SC_DOWN_RATIO_6_8 87381 47 #define GSC_SC_DOWN_RATIO_5_8 104857 48 #define GSC_SC_DOWN_RATIO_4_8 131072 49 #define GSC_SC_DOWN_RATIO_3_8 174762 50 #define GSC_SC_DOWN_RATIO_2_8 262144 51 #define GSC_CROP_MAX 8192 52 #define GSC_CROP_MIN 32 53 #define GSC_SCALE_MAX 4224 54 #define GSC_SCALE_MIN 32 55 #define GSC_COEF_RATIO 7 56 #define GSC_COEF_PHASE 9 57 #define GSC_COEF_ATTR 16 58 #define GSC_COEF_H_8T 8 59 #define GSC_COEF_V_4T 4 60 #define GSC_COEF_DEPTH 3 61 #define GSC_AUTOSUSPEND_DELAY 2000 62 63 #define get_gsc_context(dev) dev_get_drvdata(dev) 64 #define gsc_read(offset) readl(ctx->regs + (offset)) 65 #define gsc_write(cfg, offset) writel(cfg, ctx->regs + (offset)) 66 67 /* 68 * A structure of scaler. 69 * 70 * @range: narrow, wide. 71 * @pre_shfactor: pre sclaer shift factor. 72 * @pre_hratio: horizontal ratio of the prescaler. 73 * @pre_vratio: vertical ratio of the prescaler. 74 * @main_hratio: the main scaler's horizontal ratio. 75 * @main_vratio: the main scaler's vertical ratio. 76 */ 77 struct gsc_scaler { 78 bool range; 79 u32 pre_shfactor; 80 u32 pre_hratio; 81 u32 pre_vratio; 82 unsigned long main_hratio; 83 unsigned long main_vratio; 84 }; 85 86 /* 87 * A structure of gsc context. 88 * 89 * @regs_res: register resources. 90 * @regs: memory mapped io registers. 91 * @gsc_clk: gsc gate clock. 92 * @sc: scaler infomations. 93 * @id: gsc id. 94 * @irq: irq number. 95 * @rotation: supports rotation of src. 96 */ 97 struct gsc_context { 98 struct exynos_drm_ipp ipp; 99 struct drm_device *drm_dev; 100 void *dma_priv; 101 struct device *dev; 102 struct exynos_drm_ipp_task *task; 103 struct exynos_drm_ipp_formats *formats; 104 unsigned int num_formats; 105 106 struct resource *regs_res; 107 void __iomem *regs; 108 const char **clk_names; 109 struct clk *clocks[GSC_MAX_CLOCKS]; 110 int num_clocks; 111 struct gsc_scaler sc; 112 int id; 113 int irq; 114 bool rotation; 115 }; 116 117 /** 118 * struct gsc_driverdata - per device type driver data for init time. 119 * 120 * @limits: picture size limits array 121 * @clk_names: names of clocks needed by this variant 122 * @num_clocks: the number of clocks needed by this variant 123 */ 124 struct gsc_driverdata { 125 const struct drm_exynos_ipp_limit *limits; 126 int num_limits; 127 const char *clk_names[GSC_MAX_CLOCKS]; 128 int num_clocks; 129 }; 130 131 /* 8-tap Filter Coefficient */ 132 static const int h_coef_8t[GSC_COEF_RATIO][GSC_COEF_ATTR][GSC_COEF_H_8T] = { 133 { /* Ratio <= 65536 (~8:8) */ 134 { 0, 0, 0, 128, 0, 0, 0, 0 }, 135 { -1, 2, -6, 127, 7, -2, 1, 0 }, 136 { -1, 4, -12, 125, 16, -5, 1, 0 }, 137 { -1, 5, -15, 120, 25, -8, 2, 0 }, 138 { -1, 6, -18, 114, 35, -10, 3, -1 }, 139 { -1, 6, -20, 107, 46, -13, 4, -1 }, 140 { -2, 7, -21, 99, 57, -16, 5, -1 }, 141 { -1, 6, -20, 89, 68, -18, 5, -1 }, 142 { -1, 6, -20, 79, 79, -20, 6, -1 }, 143 { -1, 5, -18, 68, 89, -20, 6, -1 }, 144 { -1, 5, -16, 57, 99, -21, 7, -2 }, 145 { -1, 4, -13, 46, 107, -20, 6, -1 }, 146 { -1, 3, -10, 35, 114, -18, 6, -1 }, 147 { 0, 2, -8, 25, 120, -15, 5, -1 }, 148 { 0, 1, -5, 16, 125, -12, 4, -1 }, 149 { 0, 1, -2, 7, 127, -6, 2, -1 } 150 }, { /* 65536 < Ratio <= 74898 (~8:7) */ 151 { 3, -8, 14, 111, 13, -8, 3, 0 }, 152 { 2, -6, 7, 112, 21, -10, 3, -1 }, 153 { 2, -4, 1, 110, 28, -12, 4, -1 }, 154 { 1, -2, -3, 106, 36, -13, 4, -1 }, 155 { 1, -1, -7, 103, 44, -15, 4, -1 }, 156 { 1, 1, -11, 97, 53, -16, 4, -1 }, 157 { 0, 2, -13, 91, 61, -16, 4, -1 }, 158 { 0, 3, -15, 85, 69, -17, 4, -1 }, 159 { 0, 3, -16, 77, 77, -16, 3, 0 }, 160 { -1, 4, -17, 69, 85, -15, 3, 0 }, 161 { -1, 4, -16, 61, 91, -13, 2, 0 }, 162 { -1, 4, -16, 53, 97, -11, 1, 1 }, 163 { -1, 4, -15, 44, 103, -7, -1, 1 }, 164 { -1, 4, -13, 36, 106, -3, -2, 1 }, 165 { -1, 4, -12, 28, 110, 1, -4, 2 }, 166 { -1, 3, -10, 21, 112, 7, -6, 2 } 167 }, { /* 74898 < Ratio <= 87381 (~8:6) */ 168 { 2, -11, 25, 96, 25, -11, 2, 0 }, 169 { 2, -10, 19, 96, 31, -12, 2, 0 }, 170 { 2, -9, 14, 94, 37, -12, 2, 0 }, 171 { 2, -8, 10, 92, 43, -12, 1, 0 }, 172 { 2, -7, 5, 90, 49, -12, 1, 0 }, 173 { 2, -5, 1, 86, 55, -12, 0, 1 }, 174 { 2, -4, -2, 82, 61, -11, -1, 1 }, 175 { 1, -3, -5, 77, 67, -9, -1, 1 }, 176 { 1, -2, -7, 72, 72, -7, -2, 1 }, 177 { 1, -1, -9, 67, 77, -5, -3, 1 }, 178 { 1, -1, -11, 61, 82, -2, -4, 2 }, 179 { 1, 0, -12, 55, 86, 1, -5, 2 }, 180 { 0, 1, -12, 49, 90, 5, -7, 2 }, 181 { 0, 1, -12, 43, 92, 10, -8, 2 }, 182 { 0, 2, -12, 37, 94, 14, -9, 2 }, 183 { 0, 2, -12, 31, 96, 19, -10, 2 } 184 }, { /* 87381 < Ratio <= 104857 (~8:5) */ 185 { -1, -8, 33, 80, 33, -8, -1, 0 }, 186 { -1, -8, 28, 80, 37, -7, -2, 1 }, 187 { 0, -8, 24, 79, 41, -7, -2, 1 }, 188 { 0, -8, 20, 78, 46, -6, -3, 1 }, 189 { 0, -8, 16, 76, 50, -4, -3, 1 }, 190 { 0, -7, 13, 74, 54, -3, -4, 1 }, 191 { 1, -7, 10, 71, 58, -1, -5, 1 }, 192 { 1, -6, 6, 68, 62, 1, -5, 1 }, 193 { 1, -6, 4, 65, 65, 4, -6, 1 }, 194 { 1, -5, 1, 62, 68, 6, -6, 1 }, 195 { 1, -5, -1, 58, 71, 10, -7, 1 }, 196 { 1, -4, -3, 54, 74, 13, -7, 0 }, 197 { 1, -3, -4, 50, 76, 16, -8, 0 }, 198 { 1, -3, -6, 46, 78, 20, -8, 0 }, 199 { 1, -2, -7, 41, 79, 24, -8, 0 }, 200 { 1, -2, -7, 37, 80, 28, -8, -1 } 201 }, { /* 104857 < Ratio <= 131072 (~8:4) */ 202 { -3, 0, 35, 64, 35, 0, -3, 0 }, 203 { -3, -1, 32, 64, 38, 1, -3, 0 }, 204 { -2, -2, 29, 63, 41, 2, -3, 0 }, 205 { -2, -3, 27, 63, 43, 4, -4, 0 }, 206 { -2, -3, 24, 61, 46, 6, -4, 0 }, 207 { -2, -3, 21, 60, 49, 7, -4, 0 }, 208 { -1, -4, 19, 59, 51, 9, -4, -1 }, 209 { -1, -4, 16, 57, 53, 12, -4, -1 }, 210 { -1, -4, 14, 55, 55, 14, -4, -1 }, 211 { -1, -4, 12, 53, 57, 16, -4, -1 }, 212 { -1, -4, 9, 51, 59, 19, -4, -1 }, 213 { 0, -4, 7, 49, 60, 21, -3, -2 }, 214 { 0, -4, 6, 46, 61, 24, -3, -2 }, 215 { 0, -4, 4, 43, 63, 27, -3, -2 }, 216 { 0, -3, 2, 41, 63, 29, -2, -2 }, 217 { 0, -3, 1, 38, 64, 32, -1, -3 } 218 }, { /* 131072 < Ratio <= 174762 (~8:3) */ 219 { -1, 8, 33, 48, 33, 8, -1, 0 }, 220 { -1, 7, 31, 49, 35, 9, -1, -1 }, 221 { -1, 6, 30, 49, 36, 10, -1, -1 }, 222 { -1, 5, 28, 48, 38, 12, -1, -1 }, 223 { -1, 4, 26, 48, 39, 13, 0, -1 }, 224 { -1, 3, 24, 47, 41, 15, 0, -1 }, 225 { -1, 2, 23, 47, 42, 16, 0, -1 }, 226 { -1, 2, 21, 45, 43, 18, 1, -1 }, 227 { -1, 1, 19, 45, 45, 19, 1, -1 }, 228 { -1, 1, 18, 43, 45, 21, 2, -1 }, 229 { -1, 0, 16, 42, 47, 23, 2, -1 }, 230 { -1, 0, 15, 41, 47, 24, 3, -1 }, 231 { -1, 0, 13, 39, 48, 26, 4, -1 }, 232 { -1, -1, 12, 38, 48, 28, 5, -1 }, 233 { -1, -1, 10, 36, 49, 30, 6, -1 }, 234 { -1, -1, 9, 35, 49, 31, 7, -1 } 235 }, { /* 174762 < Ratio <= 262144 (~8:2) */ 236 { 2, 13, 30, 38, 30, 13, 2, 0 }, 237 { 2, 12, 29, 38, 30, 14, 3, 0 }, 238 { 2, 11, 28, 38, 31, 15, 3, 0 }, 239 { 2, 10, 26, 38, 32, 16, 4, 0 }, 240 { 1, 10, 26, 37, 33, 17, 4, 0 }, 241 { 1, 9, 24, 37, 34, 18, 5, 0 }, 242 { 1, 8, 24, 37, 34, 19, 5, 0 }, 243 { 1, 7, 22, 36, 35, 20, 6, 1 }, 244 { 1, 6, 21, 36, 36, 21, 6, 1 }, 245 { 1, 6, 20, 35, 36, 22, 7, 1 }, 246 { 0, 5, 19, 34, 37, 24, 8, 1 }, 247 { 0, 5, 18, 34, 37, 24, 9, 1 }, 248 { 0, 4, 17, 33, 37, 26, 10, 1 }, 249 { 0, 4, 16, 32, 38, 26, 10, 2 }, 250 { 0, 3, 15, 31, 38, 28, 11, 2 }, 251 { 0, 3, 14, 30, 38, 29, 12, 2 } 252 } 253 }; 254 255 /* 4-tap Filter Coefficient */ 256 static const int v_coef_4t[GSC_COEF_RATIO][GSC_COEF_ATTR][GSC_COEF_V_4T] = { 257 { /* Ratio <= 65536 (~8:8) */ 258 { 0, 128, 0, 0 }, 259 { -4, 127, 5, 0 }, 260 { -6, 124, 11, -1 }, 261 { -8, 118, 19, -1 }, 262 { -8, 111, 27, -2 }, 263 { -8, 102, 37, -3 }, 264 { -8, 92, 48, -4 }, 265 { -7, 81, 59, -5 }, 266 { -6, 70, 70, -6 }, 267 { -5, 59, 81, -7 }, 268 { -4, 48, 92, -8 }, 269 { -3, 37, 102, -8 }, 270 { -2, 27, 111, -8 }, 271 { -1, 19, 118, -8 }, 272 { -1, 11, 124, -6 }, 273 { 0, 5, 127, -4 } 274 }, { /* 65536 < Ratio <= 74898 (~8:7) */ 275 { 8, 112, 8, 0 }, 276 { 4, 111, 14, -1 }, 277 { 1, 109, 20, -2 }, 278 { -2, 105, 27, -2 }, 279 { -3, 100, 34, -3 }, 280 { -5, 93, 43, -3 }, 281 { -5, 86, 51, -4 }, 282 { -5, 77, 60, -4 }, 283 { -5, 69, 69, -5 }, 284 { -4, 60, 77, -5 }, 285 { -4, 51, 86, -5 }, 286 { -3, 43, 93, -5 }, 287 { -3, 34, 100, -3 }, 288 { -2, 27, 105, -2 }, 289 { -2, 20, 109, 1 }, 290 { -1, 14, 111, 4 } 291 }, { /* 74898 < Ratio <= 87381 (~8:6) */ 292 { 16, 96, 16, 0 }, 293 { 12, 97, 21, -2 }, 294 { 8, 96, 26, -2 }, 295 { 5, 93, 32, -2 }, 296 { 2, 89, 39, -2 }, 297 { 0, 84, 46, -2 }, 298 { -1, 79, 53, -3 }, 299 { -2, 73, 59, -2 }, 300 { -2, 66, 66, -2 }, 301 { -2, 59, 73, -2 }, 302 { -3, 53, 79, -1 }, 303 { -2, 46, 84, 0 }, 304 { -2, 39, 89, 2 }, 305 { -2, 32, 93, 5 }, 306 { -2, 26, 96, 8 }, 307 { -2, 21, 97, 12 } 308 }, { /* 87381 < Ratio <= 104857 (~8:5) */ 309 { 22, 84, 22, 0 }, 310 { 18, 85, 26, -1 }, 311 { 14, 84, 31, -1 }, 312 { 11, 82, 36, -1 }, 313 { 8, 79, 42, -1 }, 314 { 6, 76, 47, -1 }, 315 { 4, 72, 52, 0 }, 316 { 2, 68, 58, 0 }, 317 { 1, 63, 63, 1 }, 318 { 0, 58, 68, 2 }, 319 { 0, 52, 72, 4 }, 320 { -1, 47, 76, 6 }, 321 { -1, 42, 79, 8 }, 322 { -1, 36, 82, 11 }, 323 { -1, 31, 84, 14 }, 324 { -1, 26, 85, 18 } 325 }, { /* 104857 < Ratio <= 131072 (~8:4) */ 326 { 26, 76, 26, 0 }, 327 { 22, 76, 30, 0 }, 328 { 19, 75, 34, 0 }, 329 { 16, 73, 38, 1 }, 330 { 13, 71, 43, 1 }, 331 { 10, 69, 47, 2 }, 332 { 8, 66, 51, 3 }, 333 { 6, 63, 55, 4 }, 334 { 5, 59, 59, 5 }, 335 { 4, 55, 63, 6 }, 336 { 3, 51, 66, 8 }, 337 { 2, 47, 69, 10 }, 338 { 1, 43, 71, 13 }, 339 { 1, 38, 73, 16 }, 340 { 0, 34, 75, 19 }, 341 { 0, 30, 76, 22 } 342 }, { /* 131072 < Ratio <= 174762 (~8:3) */ 343 { 29, 70, 29, 0 }, 344 { 26, 68, 32, 2 }, 345 { 23, 67, 36, 2 }, 346 { 20, 66, 39, 3 }, 347 { 17, 65, 43, 3 }, 348 { 15, 63, 46, 4 }, 349 { 12, 61, 50, 5 }, 350 { 10, 58, 53, 7 }, 351 { 8, 56, 56, 8 }, 352 { 7, 53, 58, 10 }, 353 { 5, 50, 61, 12 }, 354 { 4, 46, 63, 15 }, 355 { 3, 43, 65, 17 }, 356 { 3, 39, 66, 20 }, 357 { 2, 36, 67, 23 }, 358 { 2, 32, 68, 26 } 359 }, { /* 174762 < Ratio <= 262144 (~8:2) */ 360 { 32, 64, 32, 0 }, 361 { 28, 63, 34, 3 }, 362 { 25, 62, 37, 4 }, 363 { 22, 62, 40, 4 }, 364 { 19, 61, 43, 5 }, 365 { 17, 59, 46, 6 }, 366 { 15, 58, 48, 7 }, 367 { 13, 55, 51, 9 }, 368 { 11, 53, 53, 11 }, 369 { 9, 51, 55, 13 }, 370 { 7, 48, 58, 15 }, 371 { 6, 46, 59, 17 }, 372 { 5, 43, 61, 19 }, 373 { 4, 40, 62, 22 }, 374 { 4, 37, 62, 25 }, 375 { 3, 34, 63, 28 } 376 } 377 }; 378 379 static int gsc_sw_reset(struct gsc_context *ctx) 380 { 381 u32 cfg; 382 int count = GSC_RESET_TIMEOUT; 383 384 /* s/w reset */ 385 cfg = (GSC_SW_RESET_SRESET); 386 gsc_write(cfg, GSC_SW_RESET); 387 388 /* wait s/w reset complete */ 389 while (count--) { 390 cfg = gsc_read(GSC_SW_RESET); 391 if (!cfg) 392 break; 393 usleep_range(1000, 2000); 394 } 395 396 if (cfg) { 397 DRM_DEV_ERROR(ctx->dev, "failed to reset gsc h/w.\n"); 398 return -EBUSY; 399 } 400 401 /* reset sequence */ 402 cfg = gsc_read(GSC_IN_BASE_ADDR_Y_MASK); 403 cfg |= (GSC_IN_BASE_ADDR_MASK | 404 GSC_IN_BASE_ADDR_PINGPONG(0)); 405 gsc_write(cfg, GSC_IN_BASE_ADDR_Y_MASK); 406 gsc_write(cfg, GSC_IN_BASE_ADDR_CB_MASK); 407 gsc_write(cfg, GSC_IN_BASE_ADDR_CR_MASK); 408 409 cfg = gsc_read(GSC_OUT_BASE_ADDR_Y_MASK); 410 cfg |= (GSC_OUT_BASE_ADDR_MASK | 411 GSC_OUT_BASE_ADDR_PINGPONG(0)); 412 gsc_write(cfg, GSC_OUT_BASE_ADDR_Y_MASK); 413 gsc_write(cfg, GSC_OUT_BASE_ADDR_CB_MASK); 414 gsc_write(cfg, GSC_OUT_BASE_ADDR_CR_MASK); 415 416 return 0; 417 } 418 419 static void gsc_handle_irq(struct gsc_context *ctx, bool enable, 420 bool overflow, bool done) 421 { 422 u32 cfg; 423 424 DRM_DEV_DEBUG_KMS(ctx->dev, "enable[%d]overflow[%d]level[%d]\n", 425 enable, overflow, done); 426 427 cfg = gsc_read(GSC_IRQ); 428 cfg |= (GSC_IRQ_OR_MASK | GSC_IRQ_FRMDONE_MASK); 429 430 if (enable) 431 cfg |= GSC_IRQ_ENABLE; 432 else 433 cfg &= ~GSC_IRQ_ENABLE; 434 435 if (overflow) 436 cfg &= ~GSC_IRQ_OR_MASK; 437 else 438 cfg |= GSC_IRQ_OR_MASK; 439 440 if (done) 441 cfg &= ~GSC_IRQ_FRMDONE_MASK; 442 else 443 cfg |= GSC_IRQ_FRMDONE_MASK; 444 445 gsc_write(cfg, GSC_IRQ); 446 } 447 448 449 static void gsc_src_set_fmt(struct gsc_context *ctx, u32 fmt, bool tiled) 450 { 451 u32 cfg; 452 453 DRM_DEV_DEBUG_KMS(ctx->dev, "fmt[0x%x]\n", fmt); 454 455 cfg = gsc_read(GSC_IN_CON); 456 cfg &= ~(GSC_IN_RGB_TYPE_MASK | GSC_IN_YUV422_1P_ORDER_MASK | 457 GSC_IN_CHROMA_ORDER_MASK | GSC_IN_FORMAT_MASK | 458 GSC_IN_TILE_TYPE_MASK | GSC_IN_TILE_MODE | 459 GSC_IN_CHROM_STRIDE_SEL_MASK | GSC_IN_RB_SWAP_MASK); 460 461 switch (fmt) { 462 case DRM_FORMAT_RGB565: 463 cfg |= GSC_IN_RGB565; 464 break; 465 case DRM_FORMAT_XRGB8888: 466 case DRM_FORMAT_ARGB8888: 467 cfg |= GSC_IN_XRGB8888; 468 break; 469 case DRM_FORMAT_BGRX8888: 470 cfg |= (GSC_IN_XRGB8888 | GSC_IN_RB_SWAP); 471 break; 472 case DRM_FORMAT_YUYV: 473 cfg |= (GSC_IN_YUV422_1P | 474 GSC_IN_YUV422_1P_ORDER_LSB_Y | 475 GSC_IN_CHROMA_ORDER_CBCR); 476 break; 477 case DRM_FORMAT_YVYU: 478 cfg |= (GSC_IN_YUV422_1P | 479 GSC_IN_YUV422_1P_ORDER_LSB_Y | 480 GSC_IN_CHROMA_ORDER_CRCB); 481 break; 482 case DRM_FORMAT_UYVY: 483 cfg |= (GSC_IN_YUV422_1P | 484 GSC_IN_YUV422_1P_OEDER_LSB_C | 485 GSC_IN_CHROMA_ORDER_CBCR); 486 break; 487 case DRM_FORMAT_VYUY: 488 cfg |= (GSC_IN_YUV422_1P | 489 GSC_IN_YUV422_1P_OEDER_LSB_C | 490 GSC_IN_CHROMA_ORDER_CRCB); 491 break; 492 case DRM_FORMAT_NV21: 493 cfg |= (GSC_IN_CHROMA_ORDER_CRCB | GSC_IN_YUV420_2P); 494 break; 495 case DRM_FORMAT_NV61: 496 cfg |= (GSC_IN_CHROMA_ORDER_CRCB | GSC_IN_YUV422_2P); 497 break; 498 case DRM_FORMAT_YUV422: 499 cfg |= GSC_IN_YUV422_3P; 500 break; 501 case DRM_FORMAT_YUV420: 502 cfg |= (GSC_IN_CHROMA_ORDER_CBCR | GSC_IN_YUV420_3P); 503 break; 504 case DRM_FORMAT_YVU420: 505 cfg |= (GSC_IN_CHROMA_ORDER_CRCB | GSC_IN_YUV420_3P); 506 break; 507 case DRM_FORMAT_NV12: 508 cfg |= (GSC_IN_CHROMA_ORDER_CBCR | GSC_IN_YUV420_2P); 509 break; 510 case DRM_FORMAT_NV16: 511 cfg |= (GSC_IN_CHROMA_ORDER_CBCR | GSC_IN_YUV422_2P); 512 break; 513 } 514 515 if (tiled) 516 cfg |= (GSC_IN_TILE_C_16x8 | GSC_IN_TILE_MODE); 517 518 gsc_write(cfg, GSC_IN_CON); 519 } 520 521 static void gsc_src_set_transf(struct gsc_context *ctx, unsigned int rotation) 522 { 523 unsigned int degree = rotation & DRM_MODE_ROTATE_MASK; 524 u32 cfg; 525 526 cfg = gsc_read(GSC_IN_CON); 527 cfg &= ~GSC_IN_ROT_MASK; 528 529 switch (degree) { 530 case DRM_MODE_ROTATE_0: 531 if (rotation & DRM_MODE_REFLECT_X) 532 cfg |= GSC_IN_ROT_XFLIP; 533 if (rotation & DRM_MODE_REFLECT_Y) 534 cfg |= GSC_IN_ROT_YFLIP; 535 break; 536 case DRM_MODE_ROTATE_90: 537 cfg |= GSC_IN_ROT_90; 538 if (rotation & DRM_MODE_REFLECT_X) 539 cfg |= GSC_IN_ROT_XFLIP; 540 if (rotation & DRM_MODE_REFLECT_Y) 541 cfg |= GSC_IN_ROT_YFLIP; 542 break; 543 case DRM_MODE_ROTATE_180: 544 cfg |= GSC_IN_ROT_180; 545 if (rotation & DRM_MODE_REFLECT_X) 546 cfg &= ~GSC_IN_ROT_XFLIP; 547 if (rotation & DRM_MODE_REFLECT_Y) 548 cfg &= ~GSC_IN_ROT_YFLIP; 549 break; 550 case DRM_MODE_ROTATE_270: 551 cfg |= GSC_IN_ROT_270; 552 if (rotation & DRM_MODE_REFLECT_X) 553 cfg &= ~GSC_IN_ROT_XFLIP; 554 if (rotation & DRM_MODE_REFLECT_Y) 555 cfg &= ~GSC_IN_ROT_YFLIP; 556 break; 557 } 558 559 gsc_write(cfg, GSC_IN_CON); 560 561 ctx->rotation = (cfg & GSC_IN_ROT_90) ? 1 : 0; 562 } 563 564 static void gsc_src_set_size(struct gsc_context *ctx, 565 struct exynos_drm_ipp_buffer *buf) 566 { 567 struct gsc_scaler *sc = &ctx->sc; 568 u32 cfg; 569 570 /* pixel offset */ 571 cfg = (GSC_SRCIMG_OFFSET_X(buf->rect.x) | 572 GSC_SRCIMG_OFFSET_Y(buf->rect.y)); 573 gsc_write(cfg, GSC_SRCIMG_OFFSET); 574 575 /* cropped size */ 576 cfg = (GSC_CROPPED_WIDTH(buf->rect.w) | 577 GSC_CROPPED_HEIGHT(buf->rect.h)); 578 gsc_write(cfg, GSC_CROPPED_SIZE); 579 580 /* original size */ 581 cfg = gsc_read(GSC_SRCIMG_SIZE); 582 cfg &= ~(GSC_SRCIMG_HEIGHT_MASK | 583 GSC_SRCIMG_WIDTH_MASK); 584 585 cfg |= (GSC_SRCIMG_WIDTH(buf->buf.pitch[0] / buf->format->cpp[0]) | 586 GSC_SRCIMG_HEIGHT(buf->buf.height)); 587 588 gsc_write(cfg, GSC_SRCIMG_SIZE); 589 590 cfg = gsc_read(GSC_IN_CON); 591 cfg &= ~GSC_IN_RGB_TYPE_MASK; 592 593 if (buf->rect.w >= GSC_WIDTH_ITU_709) 594 if (sc->range) 595 cfg |= GSC_IN_RGB_HD_WIDE; 596 else 597 cfg |= GSC_IN_RGB_HD_NARROW; 598 else 599 if (sc->range) 600 cfg |= GSC_IN_RGB_SD_WIDE; 601 else 602 cfg |= GSC_IN_RGB_SD_NARROW; 603 604 gsc_write(cfg, GSC_IN_CON); 605 } 606 607 static void gsc_src_set_buf_seq(struct gsc_context *ctx, u32 buf_id, 608 bool enqueue) 609 { 610 bool masked = !enqueue; 611 u32 cfg; 612 u32 mask = 0x00000001 << buf_id; 613 614 /* mask register set */ 615 cfg = gsc_read(GSC_IN_BASE_ADDR_Y_MASK); 616 617 /* sequence id */ 618 cfg &= ~mask; 619 cfg |= masked << buf_id; 620 gsc_write(cfg, GSC_IN_BASE_ADDR_Y_MASK); 621 gsc_write(cfg, GSC_IN_BASE_ADDR_CB_MASK); 622 gsc_write(cfg, GSC_IN_BASE_ADDR_CR_MASK); 623 } 624 625 static void gsc_src_set_addr(struct gsc_context *ctx, u32 buf_id, 626 struct exynos_drm_ipp_buffer *buf) 627 { 628 /* address register set */ 629 gsc_write(buf->dma_addr[0], GSC_IN_BASE_ADDR_Y(buf_id)); 630 gsc_write(buf->dma_addr[1], GSC_IN_BASE_ADDR_CB(buf_id)); 631 gsc_write(buf->dma_addr[2], GSC_IN_BASE_ADDR_CR(buf_id)); 632 633 gsc_src_set_buf_seq(ctx, buf_id, true); 634 } 635 636 static void gsc_dst_set_fmt(struct gsc_context *ctx, u32 fmt, bool tiled) 637 { 638 u32 cfg; 639 640 DRM_DEV_DEBUG_KMS(ctx->dev, "fmt[0x%x]\n", fmt); 641 642 cfg = gsc_read(GSC_OUT_CON); 643 cfg &= ~(GSC_OUT_RGB_TYPE_MASK | GSC_OUT_YUV422_1P_ORDER_MASK | 644 GSC_OUT_CHROMA_ORDER_MASK | GSC_OUT_FORMAT_MASK | 645 GSC_OUT_CHROM_STRIDE_SEL_MASK | GSC_OUT_RB_SWAP_MASK | 646 GSC_OUT_GLOBAL_ALPHA_MASK); 647 648 switch (fmt) { 649 case DRM_FORMAT_RGB565: 650 cfg |= GSC_OUT_RGB565; 651 break; 652 case DRM_FORMAT_ARGB8888: 653 case DRM_FORMAT_XRGB8888: 654 cfg |= (GSC_OUT_XRGB8888 | GSC_OUT_GLOBAL_ALPHA(0xff)); 655 break; 656 case DRM_FORMAT_BGRX8888: 657 cfg |= (GSC_OUT_XRGB8888 | GSC_OUT_RB_SWAP); 658 break; 659 case DRM_FORMAT_YUYV: 660 cfg |= (GSC_OUT_YUV422_1P | 661 GSC_OUT_YUV422_1P_ORDER_LSB_Y | 662 GSC_OUT_CHROMA_ORDER_CBCR); 663 break; 664 case DRM_FORMAT_YVYU: 665 cfg |= (GSC_OUT_YUV422_1P | 666 GSC_OUT_YUV422_1P_ORDER_LSB_Y | 667 GSC_OUT_CHROMA_ORDER_CRCB); 668 break; 669 case DRM_FORMAT_UYVY: 670 cfg |= (GSC_OUT_YUV422_1P | 671 GSC_OUT_YUV422_1P_OEDER_LSB_C | 672 GSC_OUT_CHROMA_ORDER_CBCR); 673 break; 674 case DRM_FORMAT_VYUY: 675 cfg |= (GSC_OUT_YUV422_1P | 676 GSC_OUT_YUV422_1P_OEDER_LSB_C | 677 GSC_OUT_CHROMA_ORDER_CRCB); 678 break; 679 case DRM_FORMAT_NV21: 680 cfg |= (GSC_OUT_CHROMA_ORDER_CRCB | GSC_OUT_YUV420_2P); 681 break; 682 case DRM_FORMAT_NV61: 683 cfg |= (GSC_OUT_CHROMA_ORDER_CRCB | GSC_OUT_YUV422_2P); 684 break; 685 case DRM_FORMAT_YUV422: 686 cfg |= GSC_OUT_YUV422_3P; 687 break; 688 case DRM_FORMAT_YUV420: 689 cfg |= (GSC_OUT_CHROMA_ORDER_CBCR | GSC_OUT_YUV420_3P); 690 break; 691 case DRM_FORMAT_YVU420: 692 cfg |= (GSC_OUT_CHROMA_ORDER_CRCB | GSC_OUT_YUV420_3P); 693 break; 694 case DRM_FORMAT_NV12: 695 cfg |= (GSC_OUT_CHROMA_ORDER_CBCR | GSC_OUT_YUV420_2P); 696 break; 697 case DRM_FORMAT_NV16: 698 cfg |= (GSC_OUT_CHROMA_ORDER_CBCR | GSC_OUT_YUV422_2P); 699 break; 700 } 701 702 if (tiled) 703 cfg |= (GSC_IN_TILE_C_16x8 | GSC_OUT_TILE_MODE); 704 705 gsc_write(cfg, GSC_OUT_CON); 706 } 707 708 static int gsc_get_ratio_shift(struct gsc_context *ctx, u32 src, u32 dst, 709 u32 *ratio) 710 { 711 DRM_DEV_DEBUG_KMS(ctx->dev, "src[%d]dst[%d]\n", src, dst); 712 713 if (src >= dst * 8) { 714 DRM_DEV_ERROR(ctx->dev, "failed to make ratio and shift.\n"); 715 return -EINVAL; 716 } else if (src >= dst * 4) 717 *ratio = 4; 718 else if (src >= dst * 2) 719 *ratio = 2; 720 else 721 *ratio = 1; 722 723 return 0; 724 } 725 726 static void gsc_get_prescaler_shfactor(u32 hratio, u32 vratio, u32 *shfactor) 727 { 728 if (hratio == 4 && vratio == 4) 729 *shfactor = 4; 730 else if ((hratio == 4 && vratio == 2) || 731 (hratio == 2 && vratio == 4)) 732 *shfactor = 3; 733 else if ((hratio == 4 && vratio == 1) || 734 (hratio == 1 && vratio == 4) || 735 (hratio == 2 && vratio == 2)) 736 *shfactor = 2; 737 else if (hratio == 1 && vratio == 1) 738 *shfactor = 0; 739 else 740 *shfactor = 1; 741 } 742 743 static int gsc_set_prescaler(struct gsc_context *ctx, struct gsc_scaler *sc, 744 struct drm_exynos_ipp_task_rect *src, 745 struct drm_exynos_ipp_task_rect *dst) 746 { 747 u32 cfg; 748 u32 src_w, src_h, dst_w, dst_h; 749 int ret = 0; 750 751 src_w = src->w; 752 src_h = src->h; 753 754 if (ctx->rotation) { 755 dst_w = dst->h; 756 dst_h = dst->w; 757 } else { 758 dst_w = dst->w; 759 dst_h = dst->h; 760 } 761 762 ret = gsc_get_ratio_shift(ctx, src_w, dst_w, &sc->pre_hratio); 763 if (ret) { 764 DRM_DEV_ERROR(ctx->dev, "failed to get ratio horizontal.\n"); 765 return ret; 766 } 767 768 ret = gsc_get_ratio_shift(ctx, src_h, dst_h, &sc->pre_vratio); 769 if (ret) { 770 DRM_DEV_ERROR(ctx->dev, "failed to get ratio vertical.\n"); 771 return ret; 772 } 773 774 DRM_DEV_DEBUG_KMS(ctx->dev, "pre_hratio[%d]pre_vratio[%d]\n", 775 sc->pre_hratio, sc->pre_vratio); 776 777 sc->main_hratio = (src_w << 16) / dst_w; 778 sc->main_vratio = (src_h << 16) / dst_h; 779 780 DRM_DEV_DEBUG_KMS(ctx->dev, "main_hratio[%ld]main_vratio[%ld]\n", 781 sc->main_hratio, sc->main_vratio); 782 783 gsc_get_prescaler_shfactor(sc->pre_hratio, sc->pre_vratio, 784 &sc->pre_shfactor); 785 786 DRM_DEV_DEBUG_KMS(ctx->dev, "pre_shfactor[%d]\n", sc->pre_shfactor); 787 788 cfg = (GSC_PRESC_SHFACTOR(sc->pre_shfactor) | 789 GSC_PRESC_H_RATIO(sc->pre_hratio) | 790 GSC_PRESC_V_RATIO(sc->pre_vratio)); 791 gsc_write(cfg, GSC_PRE_SCALE_RATIO); 792 793 return ret; 794 } 795 796 static void gsc_set_h_coef(struct gsc_context *ctx, unsigned long main_hratio) 797 { 798 int i, j, k, sc_ratio; 799 800 if (main_hratio <= GSC_SC_UP_MAX_RATIO) 801 sc_ratio = 0; 802 else if (main_hratio <= GSC_SC_DOWN_RATIO_7_8) 803 sc_ratio = 1; 804 else if (main_hratio <= GSC_SC_DOWN_RATIO_6_8) 805 sc_ratio = 2; 806 else if (main_hratio <= GSC_SC_DOWN_RATIO_5_8) 807 sc_ratio = 3; 808 else if (main_hratio <= GSC_SC_DOWN_RATIO_4_8) 809 sc_ratio = 4; 810 else if (main_hratio <= GSC_SC_DOWN_RATIO_3_8) 811 sc_ratio = 5; 812 else 813 sc_ratio = 6; 814 815 for (i = 0; i < GSC_COEF_PHASE; i++) 816 for (j = 0; j < GSC_COEF_H_8T; j++) 817 for (k = 0; k < GSC_COEF_DEPTH; k++) 818 gsc_write(h_coef_8t[sc_ratio][i][j], 819 GSC_HCOEF(i, j, k)); 820 } 821 822 static void gsc_set_v_coef(struct gsc_context *ctx, unsigned long main_vratio) 823 { 824 int i, j, k, sc_ratio; 825 826 if (main_vratio <= GSC_SC_UP_MAX_RATIO) 827 sc_ratio = 0; 828 else if (main_vratio <= GSC_SC_DOWN_RATIO_7_8) 829 sc_ratio = 1; 830 else if (main_vratio <= GSC_SC_DOWN_RATIO_6_8) 831 sc_ratio = 2; 832 else if (main_vratio <= GSC_SC_DOWN_RATIO_5_8) 833 sc_ratio = 3; 834 else if (main_vratio <= GSC_SC_DOWN_RATIO_4_8) 835 sc_ratio = 4; 836 else if (main_vratio <= GSC_SC_DOWN_RATIO_3_8) 837 sc_ratio = 5; 838 else 839 sc_ratio = 6; 840 841 for (i = 0; i < GSC_COEF_PHASE; i++) 842 for (j = 0; j < GSC_COEF_V_4T; j++) 843 for (k = 0; k < GSC_COEF_DEPTH; k++) 844 gsc_write(v_coef_4t[sc_ratio][i][j], 845 GSC_VCOEF(i, j, k)); 846 } 847 848 static void gsc_set_scaler(struct gsc_context *ctx, struct gsc_scaler *sc) 849 { 850 u32 cfg; 851 852 DRM_DEV_DEBUG_KMS(ctx->dev, "main_hratio[%ld]main_vratio[%ld]\n", 853 sc->main_hratio, sc->main_vratio); 854 855 gsc_set_h_coef(ctx, sc->main_hratio); 856 cfg = GSC_MAIN_H_RATIO_VALUE(sc->main_hratio); 857 gsc_write(cfg, GSC_MAIN_H_RATIO); 858 859 gsc_set_v_coef(ctx, sc->main_vratio); 860 cfg = GSC_MAIN_V_RATIO_VALUE(sc->main_vratio); 861 gsc_write(cfg, GSC_MAIN_V_RATIO); 862 } 863 864 static void gsc_dst_set_size(struct gsc_context *ctx, 865 struct exynos_drm_ipp_buffer *buf) 866 { 867 struct gsc_scaler *sc = &ctx->sc; 868 u32 cfg; 869 870 /* pixel offset */ 871 cfg = (GSC_DSTIMG_OFFSET_X(buf->rect.x) | 872 GSC_DSTIMG_OFFSET_Y(buf->rect.y)); 873 gsc_write(cfg, GSC_DSTIMG_OFFSET); 874 875 /* scaled size */ 876 if (ctx->rotation) 877 cfg = (GSC_SCALED_WIDTH(buf->rect.h) | 878 GSC_SCALED_HEIGHT(buf->rect.w)); 879 else 880 cfg = (GSC_SCALED_WIDTH(buf->rect.w) | 881 GSC_SCALED_HEIGHT(buf->rect.h)); 882 gsc_write(cfg, GSC_SCALED_SIZE); 883 884 /* original size */ 885 cfg = gsc_read(GSC_DSTIMG_SIZE); 886 cfg &= ~(GSC_DSTIMG_HEIGHT_MASK | GSC_DSTIMG_WIDTH_MASK); 887 cfg |= GSC_DSTIMG_WIDTH(buf->buf.pitch[0] / buf->format->cpp[0]) | 888 GSC_DSTIMG_HEIGHT(buf->buf.height); 889 gsc_write(cfg, GSC_DSTIMG_SIZE); 890 891 cfg = gsc_read(GSC_OUT_CON); 892 cfg &= ~GSC_OUT_RGB_TYPE_MASK; 893 894 if (buf->rect.w >= GSC_WIDTH_ITU_709) 895 if (sc->range) 896 cfg |= GSC_OUT_RGB_HD_WIDE; 897 else 898 cfg |= GSC_OUT_RGB_HD_NARROW; 899 else 900 if (sc->range) 901 cfg |= GSC_OUT_RGB_SD_WIDE; 902 else 903 cfg |= GSC_OUT_RGB_SD_NARROW; 904 905 gsc_write(cfg, GSC_OUT_CON); 906 } 907 908 static int gsc_dst_get_buf_seq(struct gsc_context *ctx) 909 { 910 u32 cfg, i, buf_num = GSC_REG_SZ; 911 u32 mask = 0x00000001; 912 913 cfg = gsc_read(GSC_OUT_BASE_ADDR_Y_MASK); 914 915 for (i = 0; i < GSC_REG_SZ; i++) 916 if (cfg & (mask << i)) 917 buf_num--; 918 919 DRM_DEV_DEBUG_KMS(ctx->dev, "buf_num[%d]\n", buf_num); 920 921 return buf_num; 922 } 923 924 static void gsc_dst_set_buf_seq(struct gsc_context *ctx, u32 buf_id, 925 bool enqueue) 926 { 927 bool masked = !enqueue; 928 u32 cfg; 929 u32 mask = 0x00000001 << buf_id; 930 931 /* mask register set */ 932 cfg = gsc_read(GSC_OUT_BASE_ADDR_Y_MASK); 933 934 /* sequence id */ 935 cfg &= ~mask; 936 cfg |= masked << buf_id; 937 gsc_write(cfg, GSC_OUT_BASE_ADDR_Y_MASK); 938 gsc_write(cfg, GSC_OUT_BASE_ADDR_CB_MASK); 939 gsc_write(cfg, GSC_OUT_BASE_ADDR_CR_MASK); 940 941 /* interrupt enable */ 942 if (enqueue && gsc_dst_get_buf_seq(ctx) >= GSC_BUF_START) 943 gsc_handle_irq(ctx, true, false, true); 944 945 /* interrupt disable */ 946 if (!enqueue && gsc_dst_get_buf_seq(ctx) <= GSC_BUF_STOP) 947 gsc_handle_irq(ctx, false, false, true); 948 } 949 950 static void gsc_dst_set_addr(struct gsc_context *ctx, 951 u32 buf_id, struct exynos_drm_ipp_buffer *buf) 952 { 953 /* address register set */ 954 gsc_write(buf->dma_addr[0], GSC_OUT_BASE_ADDR_Y(buf_id)); 955 gsc_write(buf->dma_addr[1], GSC_OUT_BASE_ADDR_CB(buf_id)); 956 gsc_write(buf->dma_addr[2], GSC_OUT_BASE_ADDR_CR(buf_id)); 957 958 gsc_dst_set_buf_seq(ctx, buf_id, true); 959 } 960 961 static int gsc_get_src_buf_index(struct gsc_context *ctx) 962 { 963 u32 cfg, curr_index, i; 964 u32 buf_id = GSC_MAX_SRC; 965 966 DRM_DEV_DEBUG_KMS(ctx->dev, "gsc id[%d]\n", ctx->id); 967 968 cfg = gsc_read(GSC_IN_BASE_ADDR_Y_MASK); 969 curr_index = GSC_IN_CURR_GET_INDEX(cfg); 970 971 for (i = curr_index; i < GSC_MAX_SRC; i++) { 972 if (!((cfg >> i) & 0x1)) { 973 buf_id = i; 974 break; 975 } 976 } 977 978 DRM_DEV_DEBUG_KMS(ctx->dev, "cfg[0x%x]curr_index[%d]buf_id[%d]\n", cfg, 979 curr_index, buf_id); 980 981 if (buf_id == GSC_MAX_SRC) { 982 DRM_DEV_ERROR(ctx->dev, "failed to get in buffer index.\n"); 983 return -EINVAL; 984 } 985 986 gsc_src_set_buf_seq(ctx, buf_id, false); 987 988 return buf_id; 989 } 990 991 static int gsc_get_dst_buf_index(struct gsc_context *ctx) 992 { 993 u32 cfg, curr_index, i; 994 u32 buf_id = GSC_MAX_DST; 995 996 DRM_DEV_DEBUG_KMS(ctx->dev, "gsc id[%d]\n", ctx->id); 997 998 cfg = gsc_read(GSC_OUT_BASE_ADDR_Y_MASK); 999 curr_index = GSC_OUT_CURR_GET_INDEX(cfg); 1000 1001 for (i = curr_index; i < GSC_MAX_DST; i++) { 1002 if (!((cfg >> i) & 0x1)) { 1003 buf_id = i; 1004 break; 1005 } 1006 } 1007 1008 if (buf_id == GSC_MAX_DST) { 1009 DRM_DEV_ERROR(ctx->dev, "failed to get out buffer index.\n"); 1010 return -EINVAL; 1011 } 1012 1013 gsc_dst_set_buf_seq(ctx, buf_id, false); 1014 1015 DRM_DEV_DEBUG_KMS(ctx->dev, "cfg[0x%x]curr_index[%d]buf_id[%d]\n", cfg, 1016 curr_index, buf_id); 1017 1018 return buf_id; 1019 } 1020 1021 static irqreturn_t gsc_irq_handler(int irq, void *dev_id) 1022 { 1023 struct gsc_context *ctx = dev_id; 1024 u32 status; 1025 int err = 0; 1026 1027 DRM_DEV_DEBUG_KMS(ctx->dev, "gsc id[%d]\n", ctx->id); 1028 1029 status = gsc_read(GSC_IRQ); 1030 if (status & GSC_IRQ_STATUS_OR_IRQ) { 1031 dev_err(ctx->dev, "occurred overflow at %d, status 0x%x.\n", 1032 ctx->id, status); 1033 err = -EINVAL; 1034 } 1035 1036 if (status & GSC_IRQ_STATUS_OR_FRM_DONE) { 1037 int src_buf_id, dst_buf_id; 1038 1039 dev_dbg(ctx->dev, "occurred frame done at %d, status 0x%x.\n", 1040 ctx->id, status); 1041 1042 src_buf_id = gsc_get_src_buf_index(ctx); 1043 dst_buf_id = gsc_get_dst_buf_index(ctx); 1044 1045 DRM_DEV_DEBUG_KMS(ctx->dev, "buf_id_src[%d]buf_id_dst[%d]\n", 1046 src_buf_id, dst_buf_id); 1047 1048 if (src_buf_id < 0 || dst_buf_id < 0) 1049 err = -EINVAL; 1050 } 1051 1052 if (ctx->task) { 1053 struct exynos_drm_ipp_task *task = ctx->task; 1054 1055 ctx->task = NULL; 1056 pm_runtime_mark_last_busy(ctx->dev); 1057 pm_runtime_put_autosuspend(ctx->dev); 1058 exynos_drm_ipp_task_done(task, err); 1059 } 1060 1061 return IRQ_HANDLED; 1062 } 1063 1064 static int gsc_reset(struct gsc_context *ctx) 1065 { 1066 struct gsc_scaler *sc = &ctx->sc; 1067 int ret; 1068 1069 /* reset h/w block */ 1070 ret = gsc_sw_reset(ctx); 1071 if (ret < 0) { 1072 dev_err(ctx->dev, "failed to reset hardware.\n"); 1073 return ret; 1074 } 1075 1076 /* scaler setting */ 1077 memset(&ctx->sc, 0x0, sizeof(ctx->sc)); 1078 sc->range = true; 1079 1080 return 0; 1081 } 1082 1083 static void gsc_start(struct gsc_context *ctx) 1084 { 1085 u32 cfg; 1086 1087 gsc_handle_irq(ctx, true, false, true); 1088 1089 /* enable one shot */ 1090 cfg = gsc_read(GSC_ENABLE); 1091 cfg &= ~(GSC_ENABLE_ON_CLEAR_MASK | 1092 GSC_ENABLE_CLK_GATE_MODE_MASK); 1093 cfg |= GSC_ENABLE_ON_CLEAR_ONESHOT; 1094 gsc_write(cfg, GSC_ENABLE); 1095 1096 /* src dma memory */ 1097 cfg = gsc_read(GSC_IN_CON); 1098 cfg &= ~(GSC_IN_PATH_MASK | GSC_IN_LOCAL_SEL_MASK); 1099 cfg |= GSC_IN_PATH_MEMORY; 1100 gsc_write(cfg, GSC_IN_CON); 1101 1102 /* dst dma memory */ 1103 cfg = gsc_read(GSC_OUT_CON); 1104 cfg |= GSC_OUT_PATH_MEMORY; 1105 gsc_write(cfg, GSC_OUT_CON); 1106 1107 gsc_set_scaler(ctx, &ctx->sc); 1108 1109 cfg = gsc_read(GSC_ENABLE); 1110 cfg |= GSC_ENABLE_ON; 1111 gsc_write(cfg, GSC_ENABLE); 1112 } 1113 1114 static int gsc_commit(struct exynos_drm_ipp *ipp, 1115 struct exynos_drm_ipp_task *task) 1116 { 1117 struct gsc_context *ctx = container_of(ipp, struct gsc_context, ipp); 1118 int ret; 1119 1120 pm_runtime_get_sync(ctx->dev); 1121 ctx->task = task; 1122 1123 ret = gsc_reset(ctx); 1124 if (ret) { 1125 pm_runtime_put_autosuspend(ctx->dev); 1126 ctx->task = NULL; 1127 return ret; 1128 } 1129 1130 gsc_src_set_fmt(ctx, task->src.buf.fourcc, task->src.buf.modifier); 1131 gsc_src_set_transf(ctx, task->transform.rotation); 1132 gsc_src_set_size(ctx, &task->src); 1133 gsc_src_set_addr(ctx, 0, &task->src); 1134 gsc_dst_set_fmt(ctx, task->dst.buf.fourcc, task->dst.buf.modifier); 1135 gsc_dst_set_size(ctx, &task->dst); 1136 gsc_dst_set_addr(ctx, 0, &task->dst); 1137 gsc_set_prescaler(ctx, &ctx->sc, &task->src.rect, &task->dst.rect); 1138 gsc_start(ctx); 1139 1140 return 0; 1141 } 1142 1143 static void gsc_abort(struct exynos_drm_ipp *ipp, 1144 struct exynos_drm_ipp_task *task) 1145 { 1146 struct gsc_context *ctx = 1147 container_of(ipp, struct gsc_context, ipp); 1148 1149 gsc_reset(ctx); 1150 if (ctx->task) { 1151 struct exynos_drm_ipp_task *task = ctx->task; 1152 1153 ctx->task = NULL; 1154 pm_runtime_mark_last_busy(ctx->dev); 1155 pm_runtime_put_autosuspend(ctx->dev); 1156 exynos_drm_ipp_task_done(task, -EIO); 1157 } 1158 } 1159 1160 static struct exynos_drm_ipp_funcs ipp_funcs = { 1161 .commit = gsc_commit, 1162 .abort = gsc_abort, 1163 }; 1164 1165 static int gsc_bind(struct device *dev, struct device *master, void *data) 1166 { 1167 struct gsc_context *ctx = dev_get_drvdata(dev); 1168 struct drm_device *drm_dev = data; 1169 struct exynos_drm_ipp *ipp = &ctx->ipp; 1170 1171 ctx->drm_dev = drm_dev; 1172 ctx->drm_dev = drm_dev; 1173 exynos_drm_register_dma(drm_dev, dev, &ctx->dma_priv); 1174 1175 exynos_drm_ipp_register(dev, ipp, &ipp_funcs, 1176 DRM_EXYNOS_IPP_CAP_CROP | DRM_EXYNOS_IPP_CAP_ROTATE | 1177 DRM_EXYNOS_IPP_CAP_SCALE | DRM_EXYNOS_IPP_CAP_CONVERT, 1178 ctx->formats, ctx->num_formats, "gsc"); 1179 1180 dev_info(dev, "The exynos gscaler has been probed successfully\n"); 1181 1182 return 0; 1183 } 1184 1185 static void gsc_unbind(struct device *dev, struct device *master, 1186 void *data) 1187 { 1188 struct gsc_context *ctx = dev_get_drvdata(dev); 1189 struct drm_device *drm_dev = data; 1190 struct exynos_drm_ipp *ipp = &ctx->ipp; 1191 1192 exynos_drm_ipp_unregister(dev, ipp); 1193 exynos_drm_unregister_dma(drm_dev, dev, &ctx->dma_priv); 1194 } 1195 1196 static const struct component_ops gsc_component_ops = { 1197 .bind = gsc_bind, 1198 .unbind = gsc_unbind, 1199 }; 1200 1201 static const unsigned int gsc_formats[] = { 1202 DRM_FORMAT_ARGB8888, 1203 DRM_FORMAT_XRGB8888, DRM_FORMAT_RGB565, DRM_FORMAT_BGRX8888, 1204 DRM_FORMAT_NV12, DRM_FORMAT_NV16, DRM_FORMAT_NV21, DRM_FORMAT_NV61, 1205 DRM_FORMAT_UYVY, DRM_FORMAT_VYUY, DRM_FORMAT_YUYV, DRM_FORMAT_YVYU, 1206 DRM_FORMAT_YUV420, DRM_FORMAT_YVU420, DRM_FORMAT_YUV422, 1207 }; 1208 1209 static const unsigned int gsc_tiled_formats[] = { 1210 DRM_FORMAT_NV12, DRM_FORMAT_NV21, 1211 }; 1212 1213 static int gsc_probe(struct platform_device *pdev) 1214 { 1215 struct device *dev = &pdev->dev; 1216 struct gsc_driverdata *driver_data; 1217 struct exynos_drm_ipp_formats *formats; 1218 struct gsc_context *ctx; 1219 struct resource *res; 1220 int num_formats, ret, i, j; 1221 1222 ctx = devm_kzalloc(dev, sizeof(*ctx), GFP_KERNEL); 1223 if (!ctx) 1224 return -ENOMEM; 1225 1226 driver_data = (struct gsc_driverdata *)of_device_get_match_data(dev); 1227 ctx->dev = dev; 1228 ctx->num_clocks = driver_data->num_clocks; 1229 ctx->clk_names = driver_data->clk_names; 1230 1231 /* construct formats/limits array */ 1232 num_formats = ARRAY_SIZE(gsc_formats) + ARRAY_SIZE(gsc_tiled_formats); 1233 formats = devm_kcalloc(dev, num_formats, sizeof(*formats), GFP_KERNEL); 1234 if (!formats) 1235 return -ENOMEM; 1236 1237 /* linear formats */ 1238 for (i = 0; i < ARRAY_SIZE(gsc_formats); i++) { 1239 formats[i].fourcc = gsc_formats[i]; 1240 formats[i].type = DRM_EXYNOS_IPP_FORMAT_SOURCE | 1241 DRM_EXYNOS_IPP_FORMAT_DESTINATION; 1242 formats[i].limits = driver_data->limits; 1243 formats[i].num_limits = driver_data->num_limits; 1244 } 1245 1246 /* tiled formats */ 1247 for (j = i, i = 0; i < ARRAY_SIZE(gsc_tiled_formats); j++, i++) { 1248 formats[j].fourcc = gsc_tiled_formats[i]; 1249 formats[j].modifier = DRM_FORMAT_MOD_SAMSUNG_16_16_TILE; 1250 formats[j].type = DRM_EXYNOS_IPP_FORMAT_SOURCE | 1251 DRM_EXYNOS_IPP_FORMAT_DESTINATION; 1252 formats[j].limits = driver_data->limits; 1253 formats[j].num_limits = driver_data->num_limits; 1254 } 1255 1256 ctx->formats = formats; 1257 ctx->num_formats = num_formats; 1258 1259 /* clock control */ 1260 for (i = 0; i < ctx->num_clocks; i++) { 1261 ctx->clocks[i] = devm_clk_get(dev, ctx->clk_names[i]); 1262 if (IS_ERR(ctx->clocks[i])) { 1263 dev_err(dev, "failed to get clock: %s\n", 1264 ctx->clk_names[i]); 1265 return PTR_ERR(ctx->clocks[i]); 1266 } 1267 } 1268 1269 /* resource memory */ 1270 ctx->regs_res = platform_get_resource(pdev, IORESOURCE_MEM, 0); 1271 ctx->regs = devm_ioremap_resource(dev, ctx->regs_res); 1272 if (IS_ERR(ctx->regs)) 1273 return PTR_ERR(ctx->regs); 1274 1275 /* resource irq */ 1276 res = platform_get_resource(pdev, IORESOURCE_IRQ, 0); 1277 if (!res) { 1278 dev_err(dev, "failed to request irq resource.\n"); 1279 return -ENOENT; 1280 } 1281 1282 ctx->irq = res->start; 1283 ret = devm_request_irq(dev, ctx->irq, gsc_irq_handler, 0, 1284 dev_name(dev), ctx); 1285 if (ret < 0) { 1286 dev_err(dev, "failed to request irq.\n"); 1287 return ret; 1288 } 1289 1290 /* context initailization */ 1291 ctx->id = pdev->id; 1292 1293 platform_set_drvdata(pdev, ctx); 1294 1295 pm_runtime_use_autosuspend(dev); 1296 pm_runtime_set_autosuspend_delay(dev, GSC_AUTOSUSPEND_DELAY); 1297 pm_runtime_enable(dev); 1298 1299 ret = component_add(dev, &gsc_component_ops); 1300 if (ret) 1301 goto err_pm_dis; 1302 1303 dev_info(dev, "drm gsc registered successfully.\n"); 1304 1305 return 0; 1306 1307 err_pm_dis: 1308 pm_runtime_dont_use_autosuspend(dev); 1309 pm_runtime_disable(dev); 1310 return ret; 1311 } 1312 1313 static int gsc_remove(struct platform_device *pdev) 1314 { 1315 struct device *dev = &pdev->dev; 1316 1317 component_del(dev, &gsc_component_ops); 1318 pm_runtime_dont_use_autosuspend(dev); 1319 pm_runtime_disable(dev); 1320 1321 return 0; 1322 } 1323 1324 static int __maybe_unused gsc_runtime_suspend(struct device *dev) 1325 { 1326 struct gsc_context *ctx = get_gsc_context(dev); 1327 int i; 1328 1329 DRM_DEV_DEBUG_KMS(dev, "id[%d]\n", ctx->id); 1330 1331 for (i = ctx->num_clocks - 1; i >= 0; i--) 1332 clk_disable_unprepare(ctx->clocks[i]); 1333 1334 return 0; 1335 } 1336 1337 static int __maybe_unused gsc_runtime_resume(struct device *dev) 1338 { 1339 struct gsc_context *ctx = get_gsc_context(dev); 1340 int i, ret; 1341 1342 DRM_DEV_DEBUG_KMS(dev, "id[%d]\n", ctx->id); 1343 1344 for (i = 0; i < ctx->num_clocks; i++) { 1345 ret = clk_prepare_enable(ctx->clocks[i]); 1346 if (ret) { 1347 while (--i > 0) 1348 clk_disable_unprepare(ctx->clocks[i]); 1349 return ret; 1350 } 1351 } 1352 return 0; 1353 } 1354 1355 static const struct dev_pm_ops gsc_pm_ops = { 1356 SET_SYSTEM_SLEEP_PM_OPS(pm_runtime_force_suspend, 1357 pm_runtime_force_resume) 1358 SET_RUNTIME_PM_OPS(gsc_runtime_suspend, gsc_runtime_resume, NULL) 1359 }; 1360 1361 static const struct drm_exynos_ipp_limit gsc_5250_limits[] = { 1362 { IPP_SIZE_LIMIT(BUFFER, .h = { 32, 4800, 8 }, .v = { 16, 3344, 8 }) }, 1363 { IPP_SIZE_LIMIT(AREA, .h = { 16, 4800, 2 }, .v = { 8, 3344, 2 }) }, 1364 { IPP_SIZE_LIMIT(ROTATED, .h = { 32, 2048 }, .v = { 16, 2048 }) }, 1365 { IPP_SCALE_LIMIT(.h = { (1 << 16) / 16, (1 << 16) * 8 }, 1366 .v = { (1 << 16) / 16, (1 << 16) * 8 }) }, 1367 }; 1368 1369 static const struct drm_exynos_ipp_limit gsc_5420_limits[] = { 1370 { IPP_SIZE_LIMIT(BUFFER, .h = { 32, 4800, 8 }, .v = { 16, 3344, 8 }) }, 1371 { IPP_SIZE_LIMIT(AREA, .h = { 16, 4800, 2 }, .v = { 8, 3344, 2 }) }, 1372 { IPP_SIZE_LIMIT(ROTATED, .h = { 16, 2016 }, .v = { 8, 2016 }) }, 1373 { IPP_SCALE_LIMIT(.h = { (1 << 16) / 16, (1 << 16) * 8 }, 1374 .v = { (1 << 16) / 16, (1 << 16) * 8 }) }, 1375 }; 1376 1377 static const struct drm_exynos_ipp_limit gsc_5433_limits[] = { 1378 { IPP_SIZE_LIMIT(BUFFER, .h = { 32, 8191, 16 }, .v = { 16, 8191, 2 }) }, 1379 { IPP_SIZE_LIMIT(AREA, .h = { 16, 4800, 1 }, .v = { 8, 3344, 1 }) }, 1380 { IPP_SIZE_LIMIT(ROTATED, .h = { 32, 2047 }, .v = { 8, 8191 }) }, 1381 { IPP_SCALE_LIMIT(.h = { (1 << 16) / 16, (1 << 16) * 8 }, 1382 .v = { (1 << 16) / 16, (1 << 16) * 8 }) }, 1383 }; 1384 1385 static struct gsc_driverdata gsc_exynos5250_drvdata = { 1386 .clk_names = {"gscl"}, 1387 .num_clocks = 1, 1388 .limits = gsc_5250_limits, 1389 .num_limits = ARRAY_SIZE(gsc_5250_limits), 1390 }; 1391 1392 static struct gsc_driverdata gsc_exynos5420_drvdata = { 1393 .clk_names = {"gscl"}, 1394 .num_clocks = 1, 1395 .limits = gsc_5420_limits, 1396 .num_limits = ARRAY_SIZE(gsc_5420_limits), 1397 }; 1398 1399 static struct gsc_driverdata gsc_exynos5433_drvdata = { 1400 .clk_names = {"pclk", "aclk", "aclk_xiu", "aclk_gsclbend"}, 1401 .num_clocks = 4, 1402 .limits = gsc_5433_limits, 1403 .num_limits = ARRAY_SIZE(gsc_5433_limits), 1404 }; 1405 1406 static const struct of_device_id exynos_drm_gsc_of_match[] = { 1407 { 1408 .compatible = "samsung,exynos5-gsc", 1409 .data = &gsc_exynos5250_drvdata, 1410 }, { 1411 .compatible = "samsung,exynos5250-gsc", 1412 .data = &gsc_exynos5250_drvdata, 1413 }, { 1414 .compatible = "samsung,exynos5420-gsc", 1415 .data = &gsc_exynos5420_drvdata, 1416 }, { 1417 .compatible = "samsung,exynos5433-gsc", 1418 .data = &gsc_exynos5433_drvdata, 1419 }, { 1420 }, 1421 }; 1422 MODULE_DEVICE_TABLE(of, exynos_drm_gsc_of_match); 1423 1424 struct platform_driver gsc_driver = { 1425 .probe = gsc_probe, 1426 .remove = gsc_remove, 1427 .driver = { 1428 .name = "exynos-drm-gsc", 1429 .owner = THIS_MODULE, 1430 .pm = &gsc_pm_ops, 1431 .of_match_table = of_match_ptr(exynos_drm_gsc_of_match), 1432 }, 1433 }; 1434