drivers/gpu/drm/exynos/exynos_drm_scaler.c

   1 /*
   2  * Copyright (C) 2017 Samsung Electronics Co.Ltd
   3  * Author:
   4  *      Andrzej Pietrasiewicz <andrzej.p@samsung.com>
   5  *
   6  * This program is free software; you can redistribute it and/or modify
   7  * it under the terms of the GNU General Public License version 2 as
   8  * published by the Free Software Foundationr
   9  */
  10
  11 #include <linux/kernel.h>
  12 #include <linux/component.h>
  13 #include <linux/err.h>
  14 #include <linux/interrupt.h>
  15 #include <linux/io.h>
  16 #include <linux/platform_device.h>
  17 #include <linux/clk.h>
  18 #include <linux/of_device.h>
  19 #include <linux/pm_runtime.h>
  20
  21 #include <drm/drmP.h>
  22 #include <drm/exynos_drm.h>
  23 #include "regs-scaler.h"
  24 #include "exynos_drm_fb.h"
  25 #include "exynos_drm_drv.h"
  26 #include "exynos_drm_iommu.h"
  27 #include "exynos_drm_ipp.h"
  28
  29 #define scaler_read(offset)             readl(scaler->regs + (offset))
  30 #define scaler_write(cfg, offset)       writel(cfg, scaler->regs + (offset))
  31 #define SCALER_MAX_CLK                  4
  32 #define SCALER_AUTOSUSPEND_DELAY        2000
  33
  34 struct scaler_data {
  35         const char      *clk_name[SCALER_MAX_CLK];
  36         unsigned int    num_clk;
  37         const struct exynos_drm_ipp_formats *formats;
  38         unsigned int    num_formats;
  39 };
  40
  41 struct scaler_context {
  42         struct exynos_drm_ipp           ipp;
  43         struct drm_device               *drm_dev;
  44         struct device                   *dev;
  45         void __iomem                    *regs;
  46         struct clk                      *clock[SCALER_MAX_CLK];
  47         struct exynos_drm_ipp_task      *task;
  48         const struct scaler_data        *scaler_data;
  49 };
  50
  51 static u32 scaler_get_format(u32 drm_fmt)
  52 {
  53         switch (drm_fmt) {
  54         case DRM_FORMAT_NV21:
  55                 return SCALER_YUV420_2P_UV;
  56         case DRM_FORMAT_NV12:
  57                 return SCALER_YUV420_2P_VU;
  58         case DRM_FORMAT_YUV420:
  59                 return SCALER_YUV420_3P;
  60         case DRM_FORMAT_YUYV:
  61                 return SCALER_YUV422_1P_YUYV;
  62         case DRM_FORMAT_UYVY:
  63                 return SCALER_YUV422_1P_UYVY;
  64         case DRM_FORMAT_YVYU:
  65                 return SCALER_YUV422_1P_YVYU;
  66         case DRM_FORMAT_NV61:
  67                 return SCALER_YUV422_2P_UV;
  68         case DRM_FORMAT_NV16:
  69                 return SCALER_YUV422_2P_VU;
  70         case DRM_FORMAT_YUV422:
  71                 return SCALER_YUV422_3P;
  72         case DRM_FORMAT_NV42:
  73                 return SCALER_YUV444_2P_UV;
  74         case DRM_FORMAT_NV24:
  75                 return SCALER_YUV444_2P_VU;
  76         case DRM_FORMAT_YUV444:
  77                 return SCALER_YUV444_3P;
  78         case DRM_FORMAT_RGB565:
  79                 return SCALER_RGB_565;
  80         case DRM_FORMAT_XRGB1555:
  81                 return SCALER_ARGB1555;
  82         case DRM_FORMAT_ARGB1555:
  83                 return SCALER_ARGB1555;
  84         case DRM_FORMAT_XRGB4444:
  85                 return SCALER_ARGB4444;
  86         case DRM_FORMAT_ARGB4444:
  87                 return SCALER_ARGB4444;
  88         case DRM_FORMAT_XRGB8888:
  89                 return SCALER_ARGB8888;
  90         case DRM_FORMAT_ARGB8888:
  91                 return SCALER_ARGB8888;
  92         case DRM_FORMAT_RGBX8888:
  93                 return SCALER_RGBA8888;
  94         case DRM_FORMAT_RGBA8888:
  95                 return SCALER_RGBA8888;
  96         default:
  97                 break;
  98         }
  99
 100         return 0;
 101 }
 102
 103 static inline void scaler_enable_int(struct scaler_context *scaler)
 104 {
 105         u32 val;
 106
 107         val = SCALER_INT_EN_TIMEOUT |
 108                 SCALER_INT_EN_ILLEGAL_BLEND |
 109                 SCALER_INT_EN_ILLEGAL_RATIO |
 110                 SCALER_INT_EN_ILLEGAL_DST_HEIGHT |
 111                 SCALER_INT_EN_ILLEGAL_DST_WIDTH |
 112                 SCALER_INT_EN_ILLEGAL_DST_V_POS |
 113                 SCALER_INT_EN_ILLEGAL_DST_H_POS |
 114                 SCALER_INT_EN_ILLEGAL_DST_C_SPAN |
 115                 SCALER_INT_EN_ILLEGAL_DST_Y_SPAN |
 116                 SCALER_INT_EN_ILLEGAL_DST_CR_BASE |
 117                 SCALER_INT_EN_ILLEGAL_DST_CB_BASE |
 118                 SCALER_INT_EN_ILLEGAL_DST_Y_BASE |
 119                 SCALER_INT_EN_ILLEGAL_DST_COLOR |
 120                 SCALER_INT_EN_ILLEGAL_SRC_HEIGHT |
 121                 SCALER_INT_EN_ILLEGAL_SRC_WIDTH |
 122                 SCALER_INT_EN_ILLEGAL_SRC_CV_POS |
 123                 SCALER_INT_EN_ILLEGAL_SRC_CH_POS |
 124                 SCALER_INT_EN_ILLEGAL_SRC_YV_POS |
 125                 SCALER_INT_EN_ILLEGAL_SRC_YH_POS |
 126                 SCALER_INT_EN_ILLEGAL_DST_SPAN |
 127                 SCALER_INT_EN_ILLEGAL_SRC_Y_SPAN |
 128                 SCALER_INT_EN_ILLEGAL_SRC_CR_BASE |
 129                 SCALER_INT_EN_ILLEGAL_SRC_CB_BASE |
 130                 SCALER_INT_EN_ILLEGAL_SRC_Y_BASE |
 131                 SCALER_INT_EN_ILLEGAL_SRC_COLOR |
 132                 SCALER_INT_EN_FRAME_END;
 133         scaler_write(val, SCALER_INT_EN);
 134 }
 135
 136 static inline void scaler_set_src_fmt(struct scaler_context *scaler,
 137         u32 src_fmt)
 138 {
 139         u32 val;
 140
 141         val = SCALER_SRC_CFG_SET_COLOR_FORMAT(src_fmt);
 142         scaler_write(val, SCALER_SRC_CFG);
 143 }
 144
 145 static inline void scaler_set_src_base(struct scaler_context *scaler,
 146         struct exynos_drm_ipp_buffer *src_buf)
 147 {
 148         static unsigned int bases[] = {
 149                 SCALER_SRC_Y_BASE,
 150                 SCALER_SRC_CB_BASE,
 151                 SCALER_SRC_CR_BASE,
 152         };
 153         int i;
 154
 155         for (i = 0; i < src_buf->format->num_planes; ++i)
 156                 scaler_write(src_buf->dma_addr[i], bases[i]);
 157 }
 158
 159 static inline void scaler_set_src_span(struct scaler_context *scaler,
 160         struct exynos_drm_ipp_buffer *src_buf)
 161 {
 162         u32 val;
 163
 164         val = SCALER_SRC_SPAN_SET_Y_SPAN(src_buf->buf.pitch[0] /
 165                 src_buf->format->cpp[0]);
 166
 167         if (src_buf->format->num_planes > 1)
 168                 val |= SCALER_SRC_SPAN_SET_C_SPAN(src_buf->buf.pitch[1]);
 169
 170         scaler_write(val, SCALER_SRC_SPAN);
 171 }
 172
 173 static inline void scaler_set_src_luma_pos(struct scaler_context *scaler,
 174         struct drm_exynos_ipp_task_rect *src_pos)
 175 {
 176         u32 val;
 177
 178         val = SCALER_SRC_Y_POS_SET_YH_POS(src_pos->x << 2);
 179         val |=  SCALER_SRC_Y_POS_SET_YV_POS(src_pos->y << 2);
 180         scaler_write(val, SCALER_SRC_Y_POS);
 181         scaler_write(val, SCALER_SRC_C_POS); /* ATTENTION! */
 182 }
 183
 184 static inline void scaler_set_src_wh(struct scaler_context *scaler,
 185         struct drm_exynos_ipp_task_rect *src_pos)
 186 {
 187         u32 val;
 188
 189         val = SCALER_SRC_WH_SET_WIDTH(src_pos->w);
 190         val |= SCALER_SRC_WH_SET_HEIGHT(src_pos->h);
 191         scaler_write(val, SCALER_SRC_WH);
 192 }
 193
 194 static inline void scaler_set_dst_fmt(struct scaler_context *scaler,
 195         u32 dst_fmt)
 196 {
 197         u32 val;
 198
 199         val = SCALER_DST_CFG_SET_COLOR_FORMAT(dst_fmt);
 200         scaler_write(val, SCALER_DST_CFG);
 201 }
 202
 203 static inline void scaler_set_dst_base(struct scaler_context *scaler,
 204         struct exynos_drm_ipp_buffer *dst_buf)
 205 {
 206         static unsigned int bases[] = {
 207                 SCALER_DST_Y_BASE,
 208                 SCALER_DST_CB_BASE,
 209                 SCALER_DST_CR_BASE,
 210         };
 211         int i;
 212
 213         for (i = 0; i < dst_buf->format->num_planes; ++i)
 214                 scaler_write(dst_buf->dma_addr[i], bases[i]);
 215 }
 216
 217 static inline void scaler_set_dst_span(struct scaler_context *scaler,
 218         struct exynos_drm_ipp_buffer *dst_buf)
 219 {
 220         u32 val;
 221
 222         val = SCALER_DST_SPAN_SET_Y_SPAN(dst_buf->buf.pitch[0] /
 223                 dst_buf->format->cpp[0]);
 224
 225         if (dst_buf->format->num_planes > 1)
 226                 val |= SCALER_DST_SPAN_SET_C_SPAN(dst_buf->buf.pitch[1]);
 227
 228         scaler_write(val, SCALER_DST_SPAN);
 229 }
 230
 231 static inline void scaler_set_dst_luma_pos(struct scaler_context *scaler,
 232         struct drm_exynos_ipp_task_rect *dst_pos)
 233 {
 234         u32 val;
 235
 236         val = SCALER_DST_WH_SET_WIDTH(dst_pos->w);
 237         val |= SCALER_DST_WH_SET_HEIGHT(dst_pos->h);
 238         scaler_write(val, SCALER_DST_WH);
 239 }
 240
 241 static inline void scaler_set_dst_wh(struct scaler_context *scaler,
 242         struct drm_exynos_ipp_task_rect *dst_pos)
 243 {
 244         u32 val;
 245
 246         val = SCALER_DST_POS_SET_H_POS(dst_pos->x);
 247         val |= SCALER_DST_POS_SET_V_POS(dst_pos->y);
 248         scaler_write(val, SCALER_DST_POS);
 249 }
 250
 251 static inline void scaler_set_hv_ratio(struct scaler_context *scaler,
 252         unsigned int rotation,
 253         struct drm_exynos_ipp_task_rect *src_pos,
 254         struct drm_exynos_ipp_task_rect *dst_pos)
 255 {
 256         u32 val, h_ratio, v_ratio;
 257
 258         if (drm_rotation_90_or_270(rotation)) {
 259                 h_ratio = (src_pos->h << 16) / dst_pos->w;
 260                 v_ratio = (src_pos->w << 16) / dst_pos->h;
 261         } else {
 262                 h_ratio = (src_pos->w << 16) / dst_pos->w;
 263                 v_ratio = (src_pos->h << 16) / dst_pos->h;
 264         }
 265
 266         val = SCALER_H_RATIO_SET(h_ratio);
 267         scaler_write(val, SCALER_H_RATIO);
 268
 269         val = SCALER_V_RATIO_SET(v_ratio);
 270         scaler_write(val, SCALER_V_RATIO);
 271 }
 272
 273 static inline void scaler_set_rotation(struct scaler_context *scaler,
 274         unsigned int rotation)
 275 {
 276         u32 val = 0;
 277
 278         if (rotation & DRM_MODE_ROTATE_90)
 279                 val |= SCALER_ROT_CFG_SET_ROTMODE(SCALER_ROT_MODE_90);
 280         else if (rotation & DRM_MODE_ROTATE_180)
 281                 val |= SCALER_ROT_CFG_SET_ROTMODE(SCALER_ROT_MODE_180);
 282         else if (rotation & DRM_MODE_ROTATE_270)
 283                 val |= SCALER_ROT_CFG_SET_ROTMODE(SCALER_ROT_MODE_270);
 284         if (rotation & DRM_MODE_REFLECT_X)
 285                 val |= SCALER_ROT_CFG_FLIP_X_EN;
 286         if (rotation & DRM_MODE_REFLECT_Y)
 287                 val |= SCALER_ROT_CFG_FLIP_Y_EN;
 288         scaler_write(val, SCALER_ROT_CFG);
 289 }
 290
 291 static inline void scaler_set_csc(struct scaler_context *scaler,
 292         const struct drm_format_info *fmt)
 293 {
 294         static const u32 csc_mtx[2][3][3] = {
 295                 { /* YCbCr to RGB */
 296                         {0x254, 0x000, 0x331},
 297                         {0x254, 0xf38, 0xe60},
 298                         {0x254, 0x409, 0x000},
 299                 },
 300                 { /* RGB to YCbCr */
 301                         {0x084, 0x102, 0x032},
 302                         {0xfb4, 0xf6b, 0x0e1},
 303                         {0x0e1, 0xf44, 0xfdc},
 304                 },
 305         };
 306         int i, j, dir;
 307
 308         switch (fmt->format) {
 309         case DRM_FORMAT_RGB565:
 310         case DRM_FORMAT_XRGB1555:
 311         case DRM_FORMAT_ARGB1555:
 312         case DRM_FORMAT_XRGB4444:
 313         case DRM_FORMAT_ARGB4444:
 314         case DRM_FORMAT_XRGB8888:
 315         case DRM_FORMAT_ARGB8888:
 316         case DRM_FORMAT_RGBX8888:
 317         case DRM_FORMAT_RGBA8888:
 318                 dir = 1;
 319                 break;
 320         default:
 321                 dir = 0;
 322         }
 323
 324         for (i = 0; i < 3; i++)
 325                 for (j = 0; j < 3; j++)
 326                         scaler_write(csc_mtx[dir][i][j], SCALER_CSC_COEF(j, i));
 327 }
 328
 329 static inline void scaler_set_timer(struct scaler_context *scaler,
 330         unsigned int timer, unsigned int divider)
 331 {
 332         u32 val;
 333
 334         val = SCALER_TIMEOUT_CTRL_TIMER_ENABLE;
 335         val |= SCALER_TIMEOUT_CTRL_SET_TIMER_VALUE(timer);
 336         val |= SCALER_TIMEOUT_CTRL_SET_TIMER_DIV(divider);
 337         scaler_write(val, SCALER_TIMEOUT_CTRL);
 338 }
 339
 340 static inline void scaler_start_hw(struct scaler_context *scaler)
 341 {
 342         scaler_write(SCALER_CFG_START_CMD, SCALER_CFG);
 343 }
 344
 345 static int scaler_commit(struct exynos_drm_ipp *ipp,
 346                           struct exynos_drm_ipp_task *task)
 347 {
 348         struct scaler_context *scaler =
 349                         container_of(ipp, struct scaler_context, ipp);
 350
 351         u32 src_fmt = scaler_get_format(task->src.buf.fourcc);
 352         struct drm_exynos_ipp_task_rect *src_pos = &task->src.rect;
 353
 354         u32 dst_fmt = scaler_get_format(task->dst.buf.fourcc);
 355         struct drm_exynos_ipp_task_rect *dst_pos = &task->dst.rect;
 356
 357         scaler->task = task;
 358
 359         pm_runtime_get_sync(scaler->dev);
 360
 361         scaler_set_src_fmt(scaler, src_fmt);
 362         scaler_set_src_base(scaler, &task->src);
 363         scaler_set_src_span(scaler, &task->src);
 364         scaler_set_src_luma_pos(scaler, src_pos);
 365         scaler_set_src_wh(scaler, src_pos);
 366
 367         scaler_set_dst_fmt(scaler, dst_fmt);
 368         scaler_set_dst_base(scaler, &task->dst);
 369         scaler_set_dst_span(scaler, &task->dst);
 370         scaler_set_dst_luma_pos(scaler, dst_pos);
 371         scaler_set_dst_wh(scaler, dst_pos);
 372
 373         scaler_set_hv_ratio(scaler, task->transform.rotation, src_pos, dst_pos);
 374         scaler_set_rotation(scaler, task->transform.rotation);
 375
 376         scaler_set_csc(scaler, task->src.format);
 377
 378         scaler_set_timer(scaler, 0xffff, 0xf);
 379
 380         scaler_enable_int(scaler);
 381         scaler_start_hw(scaler);
 382
 383         return 0;
 384 }
 385
 386 static struct exynos_drm_ipp_funcs ipp_funcs = {
 387         .commit = scaler_commit,
 388 };
 389
 390 static inline void scaler_disable_int(struct scaler_context *scaler)
 391 {
 392         scaler_write(0, SCALER_INT_EN);
 393 }
 394
 395 static inline u32 scaler_get_int_status(struct scaler_context *scaler)
 396 {
 397         return scaler_read(SCALER_INT_STATUS);
 398 }
 399
 400 static inline bool scaler_task_done(u32 val)
 401 {
 402         return val & SCALER_INT_STATUS_FRAME_END ? 0 : -EINVAL;
 403 }
 404
 405 static irqreturn_t scaler_irq_handler(int irq, void *arg)
 406 {
 407         struct scaler_context *scaler = arg;
 408
 409         u32 val = scaler_get_int_status(scaler);
 410
 411         scaler_disable_int(scaler);
 412
 413         if (scaler->task) {
 414                 struct exynos_drm_ipp_task *task = scaler->task;
 415
 416                 scaler->task = NULL;
 417                 pm_runtime_mark_last_busy(scaler->dev);
 418                 pm_runtime_put_autosuspend(scaler->dev);
 419                 exynos_drm_ipp_task_done(task, scaler_task_done(val));
 420         }
 421
 422         return IRQ_HANDLED;
 423 }
 424
 425 static int scaler_bind(struct device *dev, struct device *master, void *data)
 426 {
 427         struct scaler_context *scaler = dev_get_drvdata(dev);
 428         struct drm_device *drm_dev = data;
 429         struct exynos_drm_ipp *ipp = &scaler->ipp;
 430
 431         scaler->drm_dev = drm_dev;
 432         drm_iommu_attach_device(drm_dev, dev);
 433
 434         exynos_drm_ipp_register(drm_dev, ipp, &ipp_funcs,
 435                         DRM_EXYNOS_IPP_CAP_CROP | DRM_EXYNOS_IPP_CAP_ROTATE |
 436                         DRM_EXYNOS_IPP_CAP_SCALE | DRM_EXYNOS_IPP_CAP_CONVERT,
 437                         scaler->scaler_data->formats,
 438                         scaler->scaler_data->num_formats, "scaler");
 439
 440         dev_info(dev, "The exynos scaler has been probed successfully\n");
 441
 442         return 0;
 443 }
 444
 445 static void scaler_unbind(struct device *dev, struct device *master,
 446                         void *data)
 447 {
 448         struct scaler_context *scaler = dev_get_drvdata(dev);
 449         struct drm_device *drm_dev = data;
 450         struct exynos_drm_ipp *ipp = &scaler->ipp;
 451
 452         exynos_drm_ipp_unregister(drm_dev, ipp);
 453         drm_iommu_detach_device(scaler->drm_dev, scaler->dev);
 454 }
 455
 456 static const struct component_ops scaler_component_ops = {
 457         .bind   = scaler_bind,
 458         .unbind = scaler_unbind,
 459 };
 460
 461 static int scaler_probe(struct platform_device *pdev)
 462 {
 463         struct device *dev = &pdev->dev;
 464         struct resource *regs_res;
 465         struct scaler_context *scaler;
 466         int irq;
 467         int ret, i;
 468
 469         scaler = devm_kzalloc(dev, sizeof(*scaler), GFP_KERNEL);
 470         if (!scaler)
 471                 return -ENOMEM;
 472
 473         scaler->scaler_data =
 474                 (struct scaler_data *)of_device_get_match_data(dev);
 475
 476         scaler->dev = dev;
 477         regs_res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
 478         scaler->regs = devm_ioremap_resource(dev, regs_res);
 479         if (IS_ERR(scaler->regs))
 480                 return PTR_ERR(scaler->regs);
 481
 482         irq = platform_get_irq(pdev, 0);
 483         if (irq < 0) {
 484                 dev_err(dev, "failed to get irq\n");
 485                 return irq;
 486         }
 487
 488         ret = devm_request_threaded_irq(dev, irq, NULL, scaler_irq_handler,
 489                                         IRQF_ONESHOT, "drm_scaler", scaler);
 490         if (ret < 0) {
 491                 dev_err(dev, "failed to request irq\n");
 492                 return ret;
 493         }
 494
 495         for (i = 0; i < scaler->scaler_data->num_clk; ++i) {
 496                 scaler->clock[i] = devm_clk_get(dev,
 497                                               scaler->scaler_data->clk_name[i]);
 498                 if (IS_ERR(scaler->clock[i])) {
 499                         dev_err(dev, "failed to get clock\n");
 500                         return PTR_ERR(scaler->clock[i]);
 501                 }
 502         }
 503
 504         pm_runtime_use_autosuspend(dev);
 505         pm_runtime_set_autosuspend_delay(dev, SCALER_AUTOSUSPEND_DELAY);
 506         pm_runtime_enable(dev);
 507         platform_set_drvdata(pdev, scaler);
 508
 509         ret = component_add(dev, &scaler_component_ops);
 510         if (ret)
 511                 goto err_ippdrv_register;
 512
 513         return 0;
 514
 515 err_ippdrv_register:
 516         pm_runtime_dont_use_autosuspend(dev);
 517         pm_runtime_disable(dev);
 518         return ret;
 519 }
 520
 521 static int scaler_remove(struct platform_device *pdev)
 522 {
 523         struct device *dev = &pdev->dev;
 524
 525         component_del(dev, &scaler_component_ops);
 526         pm_runtime_dont_use_autosuspend(dev);
 527         pm_runtime_disable(dev);
 528
 529         return 0;
 530 }
 531
 532 #ifdef CONFIG_PM
 533
 534 static int clk_disable_unprepare_wrapper(struct clk *clk)
 535 {
 536         clk_disable_unprepare(clk);
 537
 538         return 0;
 539 }
 540
 541 static int scaler_clk_ctrl(struct scaler_context *scaler, bool enable)
 542 {
 543         int (*clk_fun)(struct clk *clk), i;
 544
 545         clk_fun = enable ? clk_prepare_enable : clk_disable_unprepare_wrapper;
 546
 547         for (i = 0; i < scaler->scaler_data->num_clk; ++i)
 548                 clk_fun(scaler->clock[i]);
 549
 550         return 0;
 551 }
 552
 553 static int scaler_runtime_suspend(struct device *dev)
 554 {
 555         struct scaler_context *scaler = dev_get_drvdata(dev);
 556
 557         return  scaler_clk_ctrl(scaler, false);
 558 }
 559
 560 static int scaler_runtime_resume(struct device *dev)
 561 {
 562         struct scaler_context *scaler = dev_get_drvdata(dev);
 563
 564         return  scaler_clk_ctrl(scaler, true);
 565 }
 566 #endif
 567
 568 static const struct dev_pm_ops scaler_pm_ops = {
 569         SET_SYSTEM_SLEEP_PM_OPS(pm_runtime_force_suspend,
 570                                 pm_runtime_force_resume)
 571         SET_RUNTIME_PM_OPS(scaler_runtime_suspend, scaler_runtime_resume, NULL)
 572 };
 573
 574 static const struct drm_exynos_ipp_limit scaler_5420_two_pixel_hv_limits[] = {
 575         { IPP_SIZE_LIMIT(BUFFER, .h = { 16, SZ_8K }, .v = { 16, SZ_8K }) },
 576         { IPP_SIZE_LIMIT(AREA, .h.align = 2, .v.align = 2) },
 577         { IPP_SCALE_LIMIT(.h = { 65536 * 1 / 4, 65536 * 16 },
 578                           .v = { 65536 * 1 / 4, 65536 * 16 }) },
 579 };
 580
 581 static const struct drm_exynos_ipp_limit scaler_5420_two_pixel_h_limits[] = {
 582         { IPP_SIZE_LIMIT(BUFFER, .h = { 16, SZ_8K }, .v = { 16, SZ_8K }) },
 583         { IPP_SIZE_LIMIT(AREA, .h.align = 2, .v.align = 1) },
 584         { IPP_SCALE_LIMIT(.h = { 65536 * 1 / 4, 65536 * 16 },
 585                           .v = { 65536 * 1 / 4, 65536 * 16 }) },
 586 };
 587
 588 static const struct drm_exynos_ipp_limit scaler_5420_one_pixel_limits[] = {
 589         { IPP_SIZE_LIMIT(BUFFER, .h = { 16, SZ_8K }, .v = { 16, SZ_8K }) },
 590         { IPP_SCALE_LIMIT(.h = { 65536 * 1 / 4, 65536 * 16 },
 591                           .v = { 65536 * 1 / 4, 65536 * 16 }) },
 592 };
 593
 594 static const struct exynos_drm_ipp_formats exynos5420_formats[] = {
 595         /* SCALER_YUV420_2P_UV */
 596         { IPP_SRCDST_FORMAT(NV21, scaler_5420_two_pixel_hv_limits) },
 597
 598         /* SCALER_YUV420_2P_VU */
 599         { IPP_SRCDST_FORMAT(NV12, scaler_5420_two_pixel_hv_limits) },
 600
 601         /* SCALER_YUV420_3P */
 602         { IPP_SRCDST_FORMAT(YUV420, scaler_5420_two_pixel_hv_limits) },
 603
 604         /* SCALER_YUV422_1P_YUYV */
 605         { IPP_SRCDST_FORMAT(YUYV, scaler_5420_two_pixel_h_limits) },
 606
 607         /* SCALER_YUV422_1P_UYVY */
 608         { IPP_SRCDST_FORMAT(UYVY, scaler_5420_two_pixel_h_limits) },
 609
 610         /* SCALER_YUV422_1P_YVYU */
 611         { IPP_SRCDST_FORMAT(YVYU, scaler_5420_two_pixel_h_limits) },
 612
 613         /* SCALER_YUV422_2P_UV */
 614         { IPP_SRCDST_FORMAT(NV61, scaler_5420_two_pixel_h_limits) },
 615
 616         /* SCALER_YUV422_2P_VU */
 617         { IPP_SRCDST_FORMAT(NV16, scaler_5420_two_pixel_h_limits) },
 618
 619         /* SCALER_YUV422_3P */
 620         { IPP_SRCDST_FORMAT(YUV422, scaler_5420_two_pixel_h_limits) },
 621
 622         /* SCALER_YUV444_2P_UV */
 623         { IPP_SRCDST_FORMAT(NV42, scaler_5420_one_pixel_limits) },
 624
 625         /* SCALER_YUV444_2P_VU */
 626         { IPP_SRCDST_FORMAT(NV24, scaler_5420_one_pixel_limits) },
 627
 628         /* SCALER_YUV444_3P */
 629         { IPP_SRCDST_FORMAT(YUV444, scaler_5420_one_pixel_limits) },
 630
 631         /* SCALER_RGB_565 */
 632         { IPP_SRCDST_FORMAT(RGB565, scaler_5420_one_pixel_limits) },
 633
 634         /* SCALER_ARGB1555 */
 635         { IPP_SRCDST_FORMAT(XRGB1555, scaler_5420_one_pixel_limits) },
 636
 637         /* SCALER_ARGB1555 */
 638         { IPP_SRCDST_FORMAT(ARGB1555, scaler_5420_one_pixel_limits) },
 639
 640         /* SCALER_ARGB4444 */
 641         { IPP_SRCDST_FORMAT(XRGB4444, scaler_5420_one_pixel_limits) },
 642
 643         /* SCALER_ARGB4444 */
 644         { IPP_SRCDST_FORMAT(ARGB4444, scaler_5420_one_pixel_limits) },
 645
 646         /* SCALER_ARGB8888 */
 647         { IPP_SRCDST_FORMAT(XRGB8888, scaler_5420_one_pixel_limits) },
 648
 649         /* SCALER_ARGB8888 */
 650         { IPP_SRCDST_FORMAT(ARGB8888, scaler_5420_one_pixel_limits) },
 651
 652         /* SCALER_RGBA8888 */
 653         { IPP_SRCDST_FORMAT(RGBX8888, scaler_5420_one_pixel_limits) },
 654
 655         /* SCALER_RGBA8888 */
 656         { IPP_SRCDST_FORMAT(RGBA8888, scaler_5420_one_pixel_limits) },
 657 };
 658
 659 static const struct scaler_data exynos5420_data = {
 660         .clk_name       = {"mscl"},
 661         .num_clk        = 1,
 662         .formats        = exynos5420_formats,
 663         .num_formats    = ARRAY_SIZE(exynos5420_formats),
 664 };
 665
 666 static const struct scaler_data exynos5433_data = {
 667         .clk_name       = {"pclk", "aclk", "aclk_xiu"},
 668         .num_clk        = 3,
 669         .formats        = exynos5420_formats, /* intentional */
 670         .num_formats    = ARRAY_SIZE(exynos5420_formats),
 671 };
 672
 673 static const struct of_device_id exynos_scaler_match[] = {
 674         {
 675                 .compatible = "samsung,exynos5420-scaler",
 676                 .data = &exynos5420_data,
 677         }, {
 678                 .compatible = "samsung,exynos5433-scaler",
 679                 .data = &exynos5433_data,
 680         }, {
 681         },
 682 };
 683 MODULE_DEVICE_TABLE(of, exynos_scaler_match);
 684
 685 struct platform_driver scaler_driver = {
 686         .probe          = scaler_probe,
 687         .remove         = scaler_remove,
 688         .driver         = {
 689                 .name   = "exynos-scaler",
 690                 .owner  = THIS_MODULE,
 691                 .pm     = &scaler_pm_ops,
 692                 .of_match_table = exynos_scaler_match,
 693         },
 694 };