drivers/gpu/drm/rockchip/rockchip_drm_vop.c

   1 /*
   2  * Copyright (C) Fuzhou Rockchip Electronics Co.Ltd
   3  * Author:Mark Yao <mark.yao@rock-chips.com>
   4  *
   5  * This software is licensed under the terms of the GNU General Public
   6  * License version 2, as published by the Free Software Foundation, and
   7  * may be copied, distributed, and modified under those terms.
   8  *
   9  * This program is distributed in the hope that it will be useful,
  10  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  11  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  12  * GNU General Public License for more details.
  13  */
  14
  15 #include <drm/drm.h>
  16 #include <drm/drmP.h>
  17 #include <drm/drm_atomic.h>
  18 #include <drm/drm_crtc.h>
  19 #include <drm/drm_crtc_helper.h>
  20 #include <drm/drm_plane_helper.h>
  21
  22 #include <linux/kernel.h>
  23 #include <linux/module.h>
  24 #include <linux/platform_device.h>
  25 #include <linux/clk.h>
  26 #include <linux/of.h>
  27 #include <linux/of_device.h>
  28 #include <linux/pm_runtime.h>
  29 #include <linux/component.h>
  30
  31 #include <linux/reset.h>
  32 #include <linux/delay.h>
  33 #include <linux/sort.h>
  34
  35 #include "rockchip_drm_drv.h"
  36 #include "rockchip_drm_gem.h"
  37 #include "rockchip_drm_fb.h"
  38 #include "rockchip_drm_vop.h"
  39
  40 #define __REG_SET_RELAXED(x, off, mask, shift, v, write_mask) \
  41                 vop_mask_write(x, off, mask, shift, v, write_mask, true)
  42
  43 #define __REG_SET_NORMAL(x, off, mask, shift, v, write_mask) \
  44                 vop_mask_write(x, off, mask, shift, v, write_mask, false)
  45
  46 #define REG_SET(x, off, reg, v, mode) \
  47                 __REG_SET_##mode(x, off + reg.offset, \
  48                                  reg.mask, reg.shift, v, reg.write_mask)
  49 #define REG_SET_MASK(x, off, reg, mask, v, mode) \
  50                 __REG_SET_##mode(x, off + reg.offset, \
  51                                  mask, reg.shift, v, reg.write_mask)
  52
  53 #define VOP_WIN_SET(x, win, name, v) \
  54                 REG_SET(x, win->offset, VOP_WIN_NAME(win, name), v, RELAXED)
  55 #define VOP_SCL_SET(x, win, name, v) \
  56                 REG_SET(x, win->offset, win->phy->scl->name, v, RELAXED)
  57 #define VOP_SCL_SET_EXT(x, win, name, v) \
  58                 REG_SET(x, win->offset, win->phy->scl->ext->name, v, RELAXED)
  59
  60 #define VOP_CTRL_SET(x, name, v) \
  61                 REG_SET(x, 0, (x)->data->ctrl->name, v, NORMAL)
  62
  63 #define VOP_INTR_GET(vop, name) \
  64                 vop_read_reg(vop, 0, &vop->data->ctrl->name)
  65
  66 #define VOP_INTR_SET(vop, name, mask, v) \
  67                 REG_SET_MASK(vop, 0, vop->data->intr->name, mask, v, NORMAL)
  68 #define VOP_INTR_SET_TYPE(vop, name, type, v) \
  69         do { \
  70                 int i, reg = 0, mask = 0; \
  71                 for (i = 0; i < vop->data->intr->nintrs; i++) { \
  72                         if (vop->data->intr->intrs[i] & type) { \
  73                                 reg |= (v) << i; \
  74                                 mask |= 1 << i; \
  75                         } \
  76                 } \
  77                 VOP_INTR_SET(vop, name, mask, reg); \
  78         } while (0)
  79 #define VOP_INTR_GET_TYPE(vop, name, type) \
  80                 vop_get_intr_type(vop, &vop->data->intr->name, type)
  81
  82 #define VOP_WIN_GET(x, win, name) \
  83                 vop_read_reg(x, win->offset, &VOP_WIN_NAME(win, name))
  84
  85 #define VOP_WIN_NAME(win, name) \
  86                 (vop_get_win_phy(win, &win->phy->name)->name)
  87
  88 #define VOP_WIN_GET_YRGBADDR(vop, win) \
  89                 vop_readl(vop, win->offset + VOP_WIN_NAME(win, yrgb_mst).offset)
  90
  91 #define to_vop(x) container_of(x, struct vop, crtc)
  92 #define to_vop_win(x) container_of(x, struct vop_win, base)
  93 #define to_vop_plane_state(x) container_of(x, struct vop_plane_state, base)
  94
  95 struct vop_zpos {
  96         int win_id;
  97         int zpos;
  98 };
  99
 100 struct vop_plane_state {
 101         struct drm_plane_state base;
 102         int format;
 103         int zpos;
 104         struct drm_rect src;
 105         struct drm_rect dest;
 106         dma_addr_t yrgb_mst;
 107         bool enable;
 108 };
 109
 110 struct vop_win {
 111         struct vop_win *parent;
 112         struct drm_plane base;
 113
 114         int win_id;
 115         int area_id;
 116         uint32_t offset;
 117         enum drm_plane_type type;
 118         const struct vop_win_phy *phy;
 119         const uint32_t *data_formats;
 120         uint32_t nformats;
 121         struct vop *vop;
 122
 123         struct vop_plane_state state;
 124 };
 125
 126 struct vop {
 127         struct drm_crtc crtc;
 128         struct device *dev;
 129         struct drm_device *drm_dev;
 130         struct drm_property *plane_zpos_prop;
 131         bool is_enabled;
 132
 133         /* mutex vsync_ work */
 134         struct mutex vsync_mutex;
 135         bool vsync_work_pending;
 136         struct completion dsp_hold_completion;
 137         struct completion wait_update_complete;
 138         struct drm_pending_vblank_event *event;
 139
 140         const struct vop_data *data;
 141         int num_wins;
 142
 143         uint32_t *regsbak;
 144         void __iomem *regs;
 145
 146         /* physical map length of vop register */
 147         uint32_t len;
 148
 149         /* one time only one process allowed to config the register */
 150         spinlock_t reg_lock;
 151         /* lock vop irq reg */
 152         spinlock_t irq_lock;
 153
 154         unsigned int irq;
 155
 156         /* vop AHP clk */
 157         struct clk *hclk;
 158         /* vop dclk */
 159         struct clk *dclk;
 160         /* vop share memory frequency */
 161         struct clk *aclk;
 162
 163         /* vop dclk reset */
 164         struct reset_control *dclk_rst;
 165
 166         struct vop_win win[];
 167 };
 168
 169 static inline void vop_writel(struct vop *vop, uint32_t offset, uint32_t v)
 170 {
 171         writel(v, vop->regs + offset);
 172         vop->regsbak[offset >> 2] = v;
 173 }
 174
 175 static inline uint32_t vop_readl(struct vop *vop, uint32_t offset)
 176 {
 177         return readl(vop->regs + offset);
 178 }
 179
 180 static inline uint32_t vop_read_reg(struct vop *vop, uint32_t base,
 181                                     const struct vop_reg *reg)
 182 {
 183         return (vop_readl(vop, base + reg->offset) >> reg->shift) & reg->mask;
 184 }
 185
 186 static inline void vop_mask_write(struct vop *vop, uint32_t offset,
 187                                   uint32_t mask, uint32_t shift, uint32_t v,
 188                                   bool write_mask, bool relaxed)
 189 {
 190         if (!mask)
 191                 return;
 192
 193         if (write_mask) {
 194                 v = ((v & mask) << shift) | (mask << (shift + 16));
 195         } else {
 196                 uint32_t cached_val = vop->regsbak[offset >> 2];
 197
 198                 v = (cached_val & ~(mask << shift)) | ((v & mask) << shift);
 199                 vop->regsbak[offset >> 2] = v;
 200         }
 201
 202         if (relaxed)
 203                 writel_relaxed(v, vop->regs + offset);
 204         else
 205                 writel(v, vop->regs + offset);
 206 }
 207
 208 static inline const struct vop_win_phy *
 209 vop_get_win_phy(struct vop_win *win, const struct vop_reg *reg)
 210 {
 211         if (!reg->mask && win->parent)
 212                 return win->parent->phy;
 213
 214         return win->phy;
 215 }
 216
 217 static inline uint32_t vop_get_intr_type(struct vop *vop,
 218                                          const struct vop_reg *reg, int type)
 219 {
 220         uint32_t i, ret = 0;
 221         uint32_t regs = vop_read_reg(vop, 0, reg);
 222
 223         for (i = 0; i < vop->data->intr->nintrs; i++) {
 224                 if ((type & vop->data->intr->intrs[i]) && (regs & 1 << i))
 225                         ret |= vop->data->intr->intrs[i];
 226         }
 227
 228         return ret;
 229 }
 230
 231 static inline void vop_cfg_done(struct vop *vop)
 232 {
 233         VOP_CTRL_SET(vop, cfg_done, 1);
 234 }
 235
 236 static bool has_rb_swapped(uint32_t format)
 237 {
 238         switch (format) {
 239         case DRM_FORMAT_XBGR8888:
 240         case DRM_FORMAT_ABGR8888:
 241         case DRM_FORMAT_BGR888:
 242         case DRM_FORMAT_BGR565:
 243                 return true;
 244         default:
 245                 return false;
 246         }
 247 }
 248
 249 static enum vop_data_format vop_convert_format(uint32_t format)
 250 {
 251         switch (format) {
 252         case DRM_FORMAT_XRGB8888:
 253         case DRM_FORMAT_ARGB8888:
 254         case DRM_FORMAT_XBGR8888:
 255         case DRM_FORMAT_ABGR8888:
 256                 return VOP_FMT_ARGB8888;
 257         case DRM_FORMAT_RGB888:
 258         case DRM_FORMAT_BGR888:
 259                 return VOP_FMT_RGB888;
 260         case DRM_FORMAT_RGB565:
 261         case DRM_FORMAT_BGR565:
 262                 return VOP_FMT_RGB565;
 263         case DRM_FORMAT_NV12:
 264                 return VOP_FMT_YUV420SP;
 265         case DRM_FORMAT_NV16:
 266                 return VOP_FMT_YUV422SP;
 267         case DRM_FORMAT_NV24:
 268                 return VOP_FMT_YUV444SP;
 269         default:
 270                 DRM_ERROR("unsupport format[%08x]\n", format);
 271                 return -EINVAL;
 272         }
 273 }
 274
 275 static bool is_yuv_support(uint32_t format)
 276 {
 277         switch (format) {
 278         case DRM_FORMAT_NV12:
 279         case DRM_FORMAT_NV16:
 280         case DRM_FORMAT_NV24:
 281                 return true;
 282         default:
 283                 return false;
 284         }
 285 }
 286
 287 static bool is_alpha_support(uint32_t format)
 288 {
 289         switch (format) {
 290         case DRM_FORMAT_ARGB8888:
 291         case DRM_FORMAT_ABGR8888:
 292                 return true;
 293         default:
 294                 return false;
 295         }
 296 }
 297
 298 static uint16_t scl_vop_cal_scale(enum scale_mode mode, uint32_t src,
 299                                   uint32_t dst, bool is_horizontal,
 300                                   int vsu_mode, int *vskiplines)
 301 {
 302         uint16_t val = 1 << SCL_FT_DEFAULT_FIXPOINT_SHIFT;
 303
 304         if (is_horizontal) {
 305                 if (mode == SCALE_UP)
 306                         val = GET_SCL_FT_BIC(src, dst);
 307                 else if (mode == SCALE_DOWN)
 308                         val = GET_SCL_FT_BILI_DN(src, dst);
 309         } else {
 310                 if (mode == SCALE_UP) {
 311                         if (vsu_mode == SCALE_UP_BIL)
 312                                 val = GET_SCL_FT_BILI_UP(src, dst);
 313                         else
 314                                 val = GET_SCL_FT_BIC(src, dst);
 315                 } else if (mode == SCALE_DOWN) {
 316                         if (vskiplines) {
 317                                 *vskiplines = scl_get_vskiplines(src, dst);
 318                                 val = scl_get_bili_dn_vskip(src, dst,
 319                                                             *vskiplines);
 320                         } else {
 321                                 val = GET_SCL_FT_BILI_DN(src, dst);
 322                         }
 323                 }
 324         }
 325
 326         return val;
 327 }
 328
 329 static void scl_vop_cal_scl_fac(struct vop *vop, struct vop_win *win,
 330                                 uint32_t src_w, uint32_t src_h, uint32_t dst_w,
 331                                 uint32_t dst_h, uint32_t pixel_format)
 332 {
 333         uint16_t yrgb_hor_scl_mode, yrgb_ver_scl_mode;
 334         uint16_t cbcr_hor_scl_mode = SCALE_NONE;
 335         uint16_t cbcr_ver_scl_mode = SCALE_NONE;
 336         int hsub = drm_format_horz_chroma_subsampling(pixel_format);
 337         int vsub = drm_format_vert_chroma_subsampling(pixel_format);
 338         bool is_yuv = is_yuv_support(pixel_format);
 339         uint16_t cbcr_src_w = src_w / hsub;
 340         uint16_t cbcr_src_h = src_h / vsub;
 341         uint16_t vsu_mode;
 342         uint16_t lb_mode;
 343         uint32_t val;
 344         int vskiplines = 0;
 345
 346         if (!win->phy->scl)
 347                 return;
 348
 349         if (dst_w > 3840) {
 350                 DRM_ERROR("Maximum destination width (3840) exceeded\n");
 351                 return;
 352         }
 353
 354         if (!win->phy->scl->ext) {
 355                 VOP_SCL_SET(vop, win, scale_yrgb_x,
 356                             scl_cal_scale2(src_w, dst_w));
 357                 VOP_SCL_SET(vop, win, scale_yrgb_y,
 358                             scl_cal_scale2(src_h, dst_h));
 359                 if (is_yuv) {
 360                         VOP_SCL_SET(vop, win, scale_cbcr_x,
 361                                     scl_cal_scale2(cbcr_src_w, dst_w));
 362                         VOP_SCL_SET(vop, win, scale_cbcr_y,
 363                                     scl_cal_scale2(cbcr_src_h, dst_h));
 364                 }
 365                 return;
 366         }
 367
 368         yrgb_hor_scl_mode = scl_get_scl_mode(src_w, dst_w);
 369         yrgb_ver_scl_mode = scl_get_scl_mode(src_h, dst_h);
 370
 371         if (is_yuv) {
 372                 cbcr_hor_scl_mode = scl_get_scl_mode(cbcr_src_w, dst_w);
 373                 cbcr_ver_scl_mode = scl_get_scl_mode(cbcr_src_h, dst_h);
 374                 if (cbcr_hor_scl_mode == SCALE_DOWN)
 375                         lb_mode = scl_vop_cal_lb_mode(dst_w, true);
 376                 else
 377                         lb_mode = scl_vop_cal_lb_mode(cbcr_src_w, true);
 378         } else {
 379                 if (yrgb_hor_scl_mode == SCALE_DOWN)
 380                         lb_mode = scl_vop_cal_lb_mode(dst_w, false);
 381                 else
 382                         lb_mode = scl_vop_cal_lb_mode(src_w, false);
 383         }
 384
 385         VOP_SCL_SET_EXT(vop, win, lb_mode, lb_mode);
 386         if (lb_mode == LB_RGB_3840X2) {
 387                 if (yrgb_ver_scl_mode != SCALE_NONE) {
 388                         DRM_ERROR("ERROR : not allow yrgb ver scale\n");
 389                         return;
 390                 }
 391                 if (cbcr_ver_scl_mode != SCALE_NONE) {
 392                         DRM_ERROR("ERROR : not allow cbcr ver scale\n");
 393                         return;
 394                 }
 395                 vsu_mode = SCALE_UP_BIL;
 396         } else if (lb_mode == LB_RGB_2560X4) {
 397                 vsu_mode = SCALE_UP_BIL;
 398         } else {
 399                 vsu_mode = SCALE_UP_BIC;
 400         }
 401
 402         val = scl_vop_cal_scale(yrgb_hor_scl_mode, src_w, dst_w,
 403                                 true, 0, NULL);
 404         VOP_SCL_SET(vop, win, scale_yrgb_x, val);
 405         val = scl_vop_cal_scale(yrgb_ver_scl_mode, src_h, dst_h,
 406                                 false, vsu_mode, &vskiplines);
 407         VOP_SCL_SET(vop, win, scale_yrgb_y, val);
 408
 409         VOP_SCL_SET_EXT(vop, win, vsd_yrgb_gt4, vskiplines == 4);
 410         VOP_SCL_SET_EXT(vop, win, vsd_yrgb_gt2, vskiplines == 2);
 411
 412         VOP_SCL_SET_EXT(vop, win, yrgb_hor_scl_mode, yrgb_hor_scl_mode);
 413         VOP_SCL_SET_EXT(vop, win, yrgb_ver_scl_mode, yrgb_ver_scl_mode);
 414         VOP_SCL_SET_EXT(vop, win, yrgb_hsd_mode, SCALE_DOWN_BIL);
 415         VOP_SCL_SET_EXT(vop, win, yrgb_vsd_mode, SCALE_DOWN_BIL);
 416         VOP_SCL_SET_EXT(vop, win, yrgb_vsu_mode, vsu_mode);
 417         if (is_yuv) {
 418                 val = scl_vop_cal_scale(cbcr_hor_scl_mode, cbcr_src_w,
 419                                         dst_w, true, 0, NULL);
 420                 VOP_SCL_SET(vop, win, scale_cbcr_x, val);
 421                 val = scl_vop_cal_scale(cbcr_ver_scl_mode, cbcr_src_h,
 422                                         dst_h, false, vsu_mode, &vskiplines);
 423                 VOP_SCL_SET(vop, win, scale_cbcr_y, val);
 424
 425                 VOP_SCL_SET_EXT(vop, win, vsd_cbcr_gt4, vskiplines == 4);
 426                 VOP_SCL_SET_EXT(vop, win, vsd_cbcr_gt2, vskiplines == 2);
 427                 VOP_SCL_SET_EXT(vop, win, cbcr_hor_scl_mode, cbcr_hor_scl_mode);
 428                 VOP_SCL_SET_EXT(vop, win, cbcr_ver_scl_mode, cbcr_ver_scl_mode);
 429                 VOP_SCL_SET_EXT(vop, win, cbcr_hsd_mode, SCALE_DOWN_BIL);
 430                 VOP_SCL_SET_EXT(vop, win, cbcr_vsd_mode, SCALE_DOWN_BIL);
 431                 VOP_SCL_SET_EXT(vop, win, cbcr_vsu_mode, vsu_mode);
 432         }
 433 }
 434
 435 static void vop_dsp_hold_valid_irq_enable(struct vop *vop)
 436 {
 437         unsigned long flags;
 438
 439         if (WARN_ON(!vop->is_enabled))
 440                 return;
 441
 442         spin_lock_irqsave(&vop->irq_lock, flags);
 443
 444         VOP_INTR_SET_TYPE(vop, enable, DSP_HOLD_VALID_INTR, 1);
 445
 446         spin_unlock_irqrestore(&vop->irq_lock, flags);
 447 }
 448
 449 static void vop_dsp_hold_valid_irq_disable(struct vop *vop)
 450 {
 451         unsigned long flags;
 452
 453         if (WARN_ON(!vop->is_enabled))
 454                 return;
 455
 456         spin_lock_irqsave(&vop->irq_lock, flags);
 457
 458         VOP_INTR_SET_TYPE(vop, enable, DSP_HOLD_VALID_INTR, 0);
 459
 460         spin_unlock_irqrestore(&vop->irq_lock, flags);
 461 }
 462
 463 static void vop_enable(struct drm_crtc *crtc)
 464 {
 465         struct vop *vop = to_vop(crtc);
 466         int ret;
 467
 468         if (vop->is_enabled)
 469                 return;
 470
 471         ret = clk_enable(vop->hclk);
 472         if (ret < 0) {
 473                 dev_err(vop->dev, "failed to enable hclk - %d\n", ret);
 474                 return;
 475         }
 476
 477         ret = clk_enable(vop->dclk);
 478         if (ret < 0) {
 479                 dev_err(vop->dev, "failed to enable dclk - %d\n", ret);
 480                 goto err_disable_hclk;
 481         }
 482
 483         ret = clk_enable(vop->aclk);
 484         if (ret < 0) {
 485                 dev_err(vop->dev, "failed to enable aclk - %d\n", ret);
 486                 goto err_disable_dclk;
 487         }
 488
 489         ret = pm_runtime_get_sync(vop->dev);
 490         if (ret < 0) {
 491                 dev_err(vop->dev, "failed to get pm runtime: %d\n", ret);
 492                 return;
 493         }
 494
 495         /*
 496          * Slave iommu shares power, irq and clock with vop.  It was associated
 497          * automatically with this master device via common driver code.
 498          * Now that we have enabled the clock we attach it to the shared drm
 499          * mapping.
 500          */
 501         ret = rockchip_drm_dma_attach_device(vop->drm_dev, vop->dev);
 502         if (ret) {
 503                 dev_err(vop->dev, "failed to attach dma mapping, %d\n", ret);
 504                 goto err_disable_aclk;
 505         }
 506
 507         memcpy(vop->regs, vop->regsbak, vop->len);
 508         /*
 509          * At here, vop clock & iommu is enable, R/W vop regs would be safe.
 510          */
 511         vop->is_enabled = true;
 512
 513         spin_lock(&vop->reg_lock);
 514
 515         VOP_CTRL_SET(vop, standby, 0);
 516
 517         spin_unlock(&vop->reg_lock);
 518
 519         enable_irq(vop->irq);
 520
 521         drm_crtc_vblank_on(crtc);
 522
 523         return;
 524
 525 err_disable_aclk:
 526         clk_disable(vop->aclk);
 527 err_disable_dclk:
 528         clk_disable(vop->dclk);
 529 err_disable_hclk:
 530         clk_disable(vop->hclk);
 531 }
 532
 533 static void vop_crtc_disable(struct drm_crtc *crtc)
 534 {
 535         struct vop *vop = to_vop(crtc);
 536         int i;
 537
 538         if (!vop->is_enabled)
 539                 return;
 540
 541         /*
 542          * We need to make sure that all windows are disabled before we
 543          * disable that crtc. Otherwise we might try to scan from a destroyed
 544          * buffer later.
 545          */
 546         for (i = 0; i < vop->num_wins; i++) {
 547                 struct vop_win *win = &vop->win[i];
 548
 549                 spin_lock(&vop->reg_lock);
 550                 VOP_WIN_SET(vop, win, enable, 0);
 551                 spin_unlock(&vop->reg_lock);
 552         }
 553
 554         drm_crtc_vblank_off(crtc);
 555
 556         /*
 557          * Vop standby will take effect at end of current frame,
 558          * if dsp hold valid irq happen, it means standby complete.
 559          *
 560          * we must wait standby complete when we want to disable aclk,
 561          * if not, memory bus maybe dead.
 562          */
 563         reinit_completion(&vop->dsp_hold_completion);
 564         vop_dsp_hold_valid_irq_enable(vop);
 565
 566         spin_lock(&vop->reg_lock);
 567
 568         VOP_CTRL_SET(vop, standby, 1);
 569
 570         spin_unlock(&vop->reg_lock);
 571
 572         wait_for_completion(&vop->dsp_hold_completion);
 573
 574         vop_dsp_hold_valid_irq_disable(vop);
 575
 576         disable_irq(vop->irq);
 577
 578         vop->is_enabled = false;
 579
 580         /*
 581          * vop standby complete, so iommu detach is safe.
 582          */
 583         rockchip_drm_dma_detach_device(vop->drm_dev, vop->dev);
 584
 585         pm_runtime_put(vop->dev);
 586         clk_disable(vop->dclk);
 587         clk_disable(vop->aclk);
 588         clk_disable(vop->hclk);
 589 }
 590
 591 static void vop_plane_destroy(struct drm_plane *plane)
 592 {
 593         drm_plane_cleanup(plane);
 594 }
 595
 596 static int vop_plane_prepare_fb(struct drm_plane *plane,
 597                                 const struct drm_plane_state *new_state)
 598 {
 599         if (plane->state->fb)
 600                 drm_framebuffer_reference(plane->state->fb);
 601
 602         return 0;
 603 }
 604
 605 static void vop_plane_cleanup_fb(struct drm_plane *plane,
 606                                  const struct drm_plane_state *old_state)
 607 {
 608         if (old_state->fb)
 609                 drm_framebuffer_unreference(old_state->fb);
 610 }
 611
 612 static int vop_plane_atomic_check(struct drm_plane *plane,
 613                            struct drm_plane_state *state)
 614 {
 615         struct drm_crtc *crtc = state->crtc;
 616         struct drm_framebuffer *fb = state->fb;
 617         struct vop_win *win = to_vop_win(plane);
 618         struct vop_plane_state *vop_plane_state = to_vop_plane_state(state);
 619         struct drm_crtc_state *crtc_state;
 620         bool visible;
 621         int ret;
 622         struct drm_rect *dest = &vop_plane_state->dest;
 623         struct drm_rect *src = &vop_plane_state->src;
 624         struct drm_rect clip;
 625         int min_scale = win->phy->scl ? FRAC_16_16(1, 8) :
 626                                         DRM_PLANE_HELPER_NO_SCALING;
 627         int max_scale = win->phy->scl ? FRAC_16_16(8, 1) :
 628                                         DRM_PLANE_HELPER_NO_SCALING;
 629
 630         crtc = crtc ? crtc : plane->state->crtc;
 631         /*
 632          * Both crtc or plane->state->crtc can be null.
 633          */
 634         if (!crtc || !fb)
 635                 goto out_disable;
 636
 637         crtc_state = drm_atomic_get_crtc_state(state->state, crtc);
 638         if (IS_ERR(crtc_state))
 639                 return PTR_ERR(crtc_state);
 640
 641         src->x1 = state->src_x;
 642         src->y1 = state->src_y;
 643         src->x2 = state->src_x + state->src_w;
 644         src->y2 = state->src_y + state->src_h;
 645         dest->x1 = state->crtc_x;
 646         dest->y1 = state->crtc_y;
 647         dest->x2 = state->crtc_x + state->crtc_w;
 648         dest->y2 = state->crtc_y + state->crtc_h;
 649
 650         clip.x1 = 0;
 651         clip.y1 = 0;
 652         clip.x2 = crtc_state->mode.hdisplay;
 653         clip.y2 = crtc_state->mode.vdisplay;
 654
 655         ret = drm_plane_helper_check_update(plane, crtc, state->fb,
 656                                             src, dest, &clip,
 657                                             min_scale,
 658                                             max_scale,
 659                                             true, true, &visible);
 660         if (ret)
 661                 return ret;
 662
 663         if (!visible)
 664                 goto out_disable;
 665
 666         vop_plane_state->format = vop_convert_format(fb->pixel_format);
 667         if (vop_plane_state->format < 0)
 668                 return vop_plane_state->format;
 669
 670         /*
 671          * Src.x1 can be odd when do clip, but yuv plane start point
 672          * need align with 2 pixel.
 673          */
 674         if (is_yuv_support(fb->pixel_format) && ((src->x1 >> 16) % 2))
 675                 return -EINVAL;
 676
 677         vop_plane_state->enable = true;
 678
 679         return 0;
 680
 681 out_disable:
 682         vop_plane_state->enable = false;
 683         return 0;
 684 }
 685
 686 static void vop_plane_atomic_disable(struct drm_plane *plane,
 687                                      struct drm_plane_state *old_state)
 688 {
 689         struct vop_plane_state *vop_plane_state = to_vop_plane_state(old_state);
 690         struct vop_win *win = to_vop_win(plane);
 691         struct vop *vop = to_vop(old_state->crtc);
 692
 693         if (!old_state->crtc)
 694                 return;
 695
 696         spin_lock(&vop->reg_lock);
 697
 698         VOP_WIN_SET(vop, win, enable, 0);
 699
 700         spin_unlock(&vop->reg_lock);
 701
 702         vop_plane_state->enable = false;
 703 }
 704
 705 static void vop_plane_atomic_update(struct drm_plane *plane,
 706                 struct drm_plane_state *old_state)
 707 {
 708         struct drm_plane_state *state = plane->state;
 709         struct drm_crtc *crtc = state->crtc;
 710         struct vop_win *win = to_vop_win(plane);
 711         struct vop_plane_state *vop_plane_state = to_vop_plane_state(state);
 712         struct vop *vop = to_vop(state->crtc);
 713         struct drm_framebuffer *fb = state->fb;
 714         unsigned int actual_w, actual_h;
 715         unsigned int dsp_stx, dsp_sty;
 716         uint32_t act_info, dsp_info, dsp_st;
 717         struct drm_rect *src = &vop_plane_state->src;
 718         struct drm_rect *dest = &vop_plane_state->dest;
 719         struct drm_gem_object *obj, *uv_obj;
 720         struct rockchip_gem_object *rk_obj, *rk_uv_obj;
 721         unsigned long offset;
 722         dma_addr_t dma_addr;
 723         uint32_t val;
 724         bool rb_swap;
 725
 726         /*
 727          * can't update plane when vop is disabled.
 728          */
 729         if (!crtc)
 730                 return;
 731
 732         if (WARN_ON(!vop->is_enabled))
 733                 return;
 734
 735         if (!vop_plane_state->enable) {
 736                 vop_plane_atomic_disable(plane, old_state);
 737                 return;
 738         }
 739
 740         obj = rockchip_fb_get_gem_obj(fb, 0);
 741         rk_obj = to_rockchip_obj(obj);
 742
 743         actual_w = drm_rect_width(src) >> 16;
 744         actual_h = drm_rect_height(src) >> 16;
 745         act_info = (actual_h - 1) << 16 | ((actual_w - 1) & 0xffff);
 746
 747         dsp_info = (drm_rect_height(dest) - 1) << 16;
 748         dsp_info |= (drm_rect_width(dest) - 1) & 0xffff;
 749
 750         dsp_stx = dest->x1 + crtc->mode.htotal - crtc->mode.hsync_start;
 751         dsp_sty = dest->y1 + crtc->mode.vtotal - crtc->mode.vsync_start;
 752         dsp_st = dsp_sty << 16 | (dsp_stx & 0xffff);
 753
 754         offset = (src->x1 >> 16) * drm_format_plane_cpp(fb->pixel_format, 0);
 755         offset += (src->y1 >> 16) * fb->pitches[0];
 756         vop_plane_state->yrgb_mst = rk_obj->dma_addr + offset + fb->offsets[0];
 757
 758         spin_lock(&vop->reg_lock);
 759
 760         VOP_WIN_SET(vop, win, format, vop_plane_state->format);
 761         VOP_WIN_SET(vop, win, yrgb_vir, fb->pitches[0] >> 2);
 762         VOP_WIN_SET(vop, win, yrgb_mst, vop_plane_state->yrgb_mst);
 763         if (is_yuv_support(fb->pixel_format)) {
 764                 int hsub = drm_format_horz_chroma_subsampling(fb->pixel_format);
 765                 int vsub = drm_format_vert_chroma_subsampling(fb->pixel_format);
 766                 int bpp = drm_format_plane_cpp(fb->pixel_format, 1);
 767
 768                 uv_obj = rockchip_fb_get_gem_obj(fb, 1);
 769                 rk_uv_obj = to_rockchip_obj(uv_obj);
 770
 771                 offset = (src->x1 >> 16) * bpp / hsub;
 772                 offset += (src->y1 >> 16) * fb->pitches[1] / vsub;
 773
 774                 dma_addr = rk_uv_obj->dma_addr + offset + fb->offsets[1];
 775                 VOP_WIN_SET(vop, win, uv_vir, fb->pitches[1] >> 2);
 776                 VOP_WIN_SET(vop, win, uv_mst, dma_addr);
 777         }
 778
 779         scl_vop_cal_scl_fac(vop, win, actual_w, actual_h,
 780                             drm_rect_width(dest), drm_rect_height(dest),
 781                             fb->pixel_format);
 782
 783         VOP_WIN_SET(vop, win, act_info, act_info);
 784         VOP_WIN_SET(vop, win, dsp_info, dsp_info);
 785         VOP_WIN_SET(vop, win, dsp_st, dsp_st);
 786
 787         rb_swap = has_rb_swapped(fb->pixel_format);
 788         VOP_WIN_SET(vop, win, rb_swap, rb_swap);
 789
 790         if (is_alpha_support(fb->pixel_format)) {
 791                 VOP_WIN_SET(vop, win, dst_alpha_ctl,
 792                             DST_FACTOR_M0(ALPHA_SRC_INVERSE));
 793                 val = SRC_ALPHA_EN(1) | SRC_COLOR_M0(ALPHA_SRC_PRE_MUL) |
 794                         SRC_ALPHA_M0(ALPHA_STRAIGHT) |
 795                         SRC_BLEND_M0(ALPHA_PER_PIX) |
 796                         SRC_ALPHA_CAL_M0(ALPHA_NO_SATURATION) |
 797                         SRC_FACTOR_M0(ALPHA_ONE);
 798                 VOP_WIN_SET(vop, win, src_alpha_ctl, val);
 799         } else {
 800                 VOP_WIN_SET(vop, win, src_alpha_ctl, SRC_ALPHA_EN(0));
 801         }
 802
 803         VOP_WIN_SET(vop, win, enable, 1);
 804         spin_unlock(&vop->reg_lock);
 805 }
 806
 807 static const struct drm_plane_helper_funcs plane_helper_funcs = {
 808         .prepare_fb = vop_plane_prepare_fb,
 809         .cleanup_fb = vop_plane_cleanup_fb,
 810         .atomic_check = vop_plane_atomic_check,
 811         .atomic_update = vop_plane_atomic_update,
 812         .atomic_disable = vop_plane_atomic_disable,
 813 };
 814
 815 void vop_atomic_plane_reset(struct drm_plane *plane)
 816 {
 817         struct vop_win *win = to_vop_win(plane);
 818         struct vop_plane_state *vop_plane_state =
 819                                         to_vop_plane_state(plane->state);
 820
 821         if (plane->state && plane->state->fb)
 822                 drm_framebuffer_unreference(plane->state->fb);
 823
 824         kfree(vop_plane_state);
 825         vop_plane_state = kzalloc(sizeof(*vop_plane_state), GFP_KERNEL);
 826         if (!vop_plane_state)
 827                 return;
 828
 829         vop_plane_state->zpos = win->win_id;
 830         plane->state = &vop_plane_state->base;
 831         plane->state->plane = plane;
 832 }
 833
 834 struct drm_plane_state *
 835 vop_atomic_plane_duplicate_state(struct drm_plane *plane)
 836 {
 837         struct vop_plane_state *old_vop_plane_state;
 838         struct vop_plane_state *vop_plane_state;
 839
 840         if (WARN_ON(!plane->state))
 841                 return NULL;
 842
 843         old_vop_plane_state = to_vop_plane_state(plane->state);
 844         vop_plane_state = kmemdup(old_vop_plane_state,
 845                                   sizeof(*vop_plane_state), GFP_KERNEL);
 846         if (!vop_plane_state)
 847                 return NULL;
 848
 849         __drm_atomic_helper_plane_duplicate_state(plane,
 850                                                   &vop_plane_state->base);
 851
 852         return &vop_plane_state->base;
 853 }
 854
 855 static void vop_atomic_plane_destroy_state(struct drm_plane *plane,
 856                                            struct drm_plane_state *state)
 857 {
 858         struct vop_plane_state *vop_state = to_vop_plane_state(state);
 859
 860         __drm_atomic_helper_plane_destroy_state(plane, state);
 861
 862         kfree(vop_state);
 863 }
 864
 865 static int vop_atomic_plane_set_property(struct drm_plane *plane,
 866                                          struct drm_plane_state *state,
 867                                          struct drm_property *property,
 868                                          uint64_t val)
 869 {
 870         struct vop_win *win = to_vop_win(plane);
 871         struct vop_plane_state *plane_state = to_vop_plane_state(state);
 872
 873         if (property == win->vop->plane_zpos_prop) {
 874                 plane_state->zpos = val;
 875                 return 0;
 876         }
 877
 878         DRM_ERROR("failed to set vop plane property\n");
 879         return -EINVAL;
 880 }
 881
 882 static int vop_atomic_plane_get_property(struct drm_plane *plane,
 883                                          const struct drm_plane_state *state,
 884                                          struct drm_property *property,
 885                                          uint64_t *val)
 886 {
 887         struct vop_win *win = to_vop_win(plane);
 888         struct vop_plane_state *plane_state = to_vop_plane_state(state);
 889
 890         if (property == win->vop->plane_zpos_prop) {
 891                 *val = plane_state->zpos;
 892                 return 0;
 893         }
 894
 895         DRM_ERROR("failed to get vop plane property\n");
 896         return -EINVAL;
 897 }
 898
 899 static const struct drm_plane_funcs vop_plane_funcs = {
 900         .update_plane   = drm_atomic_helper_update_plane,
 901         .disable_plane  = drm_atomic_helper_disable_plane,
 902         .destroy = vop_plane_destroy,
 903         .reset = vop_atomic_plane_reset,
 904         .atomic_duplicate_state = vop_atomic_plane_duplicate_state,
 905         .atomic_destroy_state = vop_atomic_plane_destroy_state,
 906         .atomic_set_property = vop_atomic_plane_set_property,
 907         .atomic_get_property = vop_atomic_plane_get_property,
 908 };
 909
 910 static int vop_crtc_enable_vblank(struct drm_crtc *crtc)
 911 {
 912         struct vop *vop = to_vop(crtc);
 913         unsigned long flags;
 914
 915         if (WARN_ON(!vop->is_enabled))
 916                 return -EPERM;
 917
 918         spin_lock_irqsave(&vop->irq_lock, flags);
 919
 920         VOP_INTR_SET_TYPE(vop, enable, FS_INTR, 1);
 921
 922         spin_unlock_irqrestore(&vop->irq_lock, flags);
 923
 924         return 0;
 925 }
 926
 927 static void vop_crtc_disable_vblank(struct drm_crtc *crtc)
 928 {
 929         struct vop *vop = to_vop(crtc);
 930         unsigned long flags;
 931
 932         if (WARN_ON(!vop->is_enabled))
 933                 return;
 934
 935         spin_lock_irqsave(&vop->irq_lock, flags);
 936
 937         VOP_INTR_SET_TYPE(vop, enable, FS_INTR, 0);
 938
 939         spin_unlock_irqrestore(&vop->irq_lock, flags);
 940 }
 941
 942 static void vop_crtc_wait_for_update(struct drm_crtc *crtc)
 943 {
 944         struct vop *vop = to_vop(crtc);
 945
 946         reinit_completion(&vop->wait_update_complete);
 947         WARN_ON(!wait_for_completion_timeout(&vop->wait_update_complete, 100));
 948 }
 949
 950 static void vop_crtc_cancel_pending_vblank(struct drm_crtc *crtc,
 951                                            struct drm_file *file_priv)
 952 {
 953         struct drm_device *drm = crtc->dev;
 954         struct vop *vop = to_vop(crtc);
 955         struct drm_pending_vblank_event *e;
 956         unsigned long flags;
 957
 958         spin_lock_irqsave(&drm->event_lock, flags);
 959         e = vop->event;
 960         if (e && e->base.file_priv == file_priv) {
 961                 vop->event = NULL;
 962
 963                 e->base.destroy(&e->base);
 964                 file_priv->event_space += sizeof(e->event);
 965         }
 966         spin_unlock_irqrestore(&drm->event_lock, flags);
 967 }
 968
 969 static const struct rockchip_crtc_funcs private_crtc_funcs = {
 970         .enable_vblank = vop_crtc_enable_vblank,
 971         .disable_vblank = vop_crtc_disable_vblank,
 972         .wait_for_update = vop_crtc_wait_for_update,
 973         .cancel_pending_vblank = vop_crtc_cancel_pending_vblank,
 974 };
 975
 976 static bool vop_crtc_mode_fixup(struct drm_crtc *crtc,
 977                                 const struct drm_display_mode *mode,
 978                                 struct drm_display_mode *adjusted_mode)
 979 {
 980         struct vop *vop = to_vop(crtc);
 981
 982         adjusted_mode->clock =
 983                 clk_round_rate(vop->dclk, mode->clock * 1000) / 1000;
 984
 985         return true;
 986 }
 987
 988 static void vop_crtc_enable(struct drm_crtc *crtc)
 989 {
 990         struct vop *vop = to_vop(crtc);
 991         struct rockchip_crtc_state *s = to_rockchip_crtc_state(crtc->state);
 992         struct drm_display_mode *adjusted_mode = &crtc->state->adjusted_mode;
 993         u16 hsync_len = adjusted_mode->hsync_end - adjusted_mode->hsync_start;
 994         u16 hdisplay = adjusted_mode->hdisplay;
 995         u16 htotal = adjusted_mode->htotal;
 996         u16 hact_st = adjusted_mode->htotal - adjusted_mode->hsync_start;
 997         u16 hact_end = hact_st + hdisplay;
 998         u16 vdisplay = adjusted_mode->vdisplay;
 999         u16 vtotal = adjusted_mode->vtotal;
1000         u16 vsync_len = adjusted_mode->vsync_end - adjusted_mode->vsync_start;
1001         u16 vact_st = adjusted_mode->vtotal - adjusted_mode->vsync_start;
1002         u16 vact_end = vact_st + vdisplay;
1003         uint32_t val;
1004
1005         vop_enable(crtc);
1006         /*
1007          * If dclk rate is zero, mean that scanout is stop,
1008          * we don't need wait any more.
1009          */
1010         if (clk_get_rate(vop->dclk)) {
1011                 /*
1012                  * Rk3288 vop timing register is immediately, when configure
1013                  * display timing on display time, may cause tearing.
1014                  *
1015                  * Vop standby will take effect at end of current frame,
1016                  * if dsp hold valid irq happen, it means standby complete.
1017                  *
1018                  * mode set:
1019                  *    standby and wait complete --> |----
1020                  *                                  | display time
1021                  *                                  |----
1022                  *                                  |---> dsp hold irq
1023                  *     configure display timing --> |
1024                  *         standby exit             |
1025                  *                                  | new frame start.
1026                  */
1027
1028                 reinit_completion(&vop->dsp_hold_completion);
1029                 vop_dsp_hold_valid_irq_enable(vop);
1030
1031                 spin_lock(&vop->reg_lock);
1032
1033                 VOP_CTRL_SET(vop, standby, 1);
1034
1035                 spin_unlock(&vop->reg_lock);
1036
1037                 wait_for_completion(&vop->dsp_hold_completion);
1038
1039                 vop_dsp_hold_valid_irq_disable(vop);
1040         }
1041
1042         val = 0x8;
1043         val |= (adjusted_mode->flags & DRM_MODE_FLAG_NHSYNC) ? 0 : 1;
1044         val |= (adjusted_mode->flags & DRM_MODE_FLAG_NVSYNC) ? 0 : (1 << 1);
1045         VOP_CTRL_SET(vop, pin_pol, val);
1046         switch (s->output_type) {
1047         case DRM_MODE_CONNECTOR_LVDS:
1048                 VOP_CTRL_SET(vop, rgb_en, 1);
1049                 VOP_CTRL_SET(vop, rgb_pin_pol, val);
1050                 break;
1051         case DRM_MODE_CONNECTOR_eDP:
1052                 VOP_CTRL_SET(vop, edp_en, 1);
1053                 VOP_CTRL_SET(vop, edp_pin_pol, val);
1054                 break;
1055         case DRM_MODE_CONNECTOR_HDMIA:
1056                 VOP_CTRL_SET(vop, hdmi_en, 1);
1057                 VOP_CTRL_SET(vop, hdmi_pin_pol, val);
1058                 break;
1059         case DRM_MODE_CONNECTOR_DSI:
1060                 VOP_CTRL_SET(vop, mipi_en, 1);
1061                 VOP_CTRL_SET(vop, mipi_pin_pol, val);
1062                 break;
1063         default:
1064                 DRM_ERROR("unsupport connector_type[%d]\n", s->output_type);
1065         }
1066         VOP_CTRL_SET(vop, out_mode, s->output_mode);
1067
1068         VOP_CTRL_SET(vop, htotal_pw, (htotal << 16) | hsync_len);
1069         val = hact_st << 16;
1070         val |= hact_end;
1071         VOP_CTRL_SET(vop, hact_st_end, val);
1072         VOP_CTRL_SET(vop, hpost_st_end, val);
1073
1074         VOP_CTRL_SET(vop, vtotal_pw, (vtotal << 16) | vsync_len);
1075         val = vact_st << 16;
1076         val |= vact_end;
1077         VOP_CTRL_SET(vop, vact_st_end, val);
1078         VOP_CTRL_SET(vop, vpost_st_end, val);
1079
1080         clk_set_rate(vop->dclk, adjusted_mode->clock * 1000);
1081
1082         VOP_CTRL_SET(vop, standby, 0);
1083 }
1084
1085 static int vop_zpos_cmp(const void *a, const void *b)
1086 {
1087         struct vop_zpos *pa = (struct vop_zpos *)a;
1088         struct vop_zpos *pb = (struct vop_zpos *)b;
1089
1090         return pb->zpos - pa->zpos;
1091 }
1092
1093 static int vop_crtc_atomic_check(struct drm_crtc *crtc,
1094                                  struct drm_crtc_state *state)
1095 {
1096         struct drm_device *dev = crtc->dev;
1097         struct rockchip_crtc_state *s = to_rockchip_crtc_state(state);
1098         struct vop *vop = to_vop(crtc);
1099         const struct vop_data *vop_data = vop->data;
1100         struct drm_plane *plane;
1101         struct vop_zpos *pzpos;
1102         int dsp_layer_sel = 0;
1103         int i, cnt = 0, ret = 0;
1104
1105         pzpos = kmalloc_array(vop->num_wins, sizeof(*pzpos), GFP_KERNEL);
1106         if (!pzpos)
1107                 return -ENOMEM;
1108
1109         drm_atomic_crtc_state_for_each_plane(plane, state) {
1110                 struct drm_plane_state *pstate;
1111                 struct vop_plane_state *plane_state;
1112                 struct vop_win *win = to_vop_win(plane);
1113
1114                 if (plane->parent)
1115                         continue;
1116                 if (cnt >= vop->num_wins) {
1117                         dev_err(dev->dev, "too many planes!\n");
1118                         ret = -EINVAL;
1119                         goto err_free_pzpos;
1120                 }
1121                 pstate = state->state->plane_states[drm_plane_index(plane)];
1122
1123                 /*
1124                  * plane might not have changed, in which case take
1125                  * current state:
1126                  */
1127                 if (!pstate)
1128                         pstate = plane->state;
1129                 plane_state = to_vop_plane_state(pstate);
1130                 pzpos[cnt].zpos = plane_state->zpos;
1131                 pzpos[cnt].win_id = win->win_id;
1132
1133                 cnt++;
1134         }
1135
1136         sort(pzpos, cnt, sizeof(pzpos[0]), vop_zpos_cmp, NULL);
1137
1138         WARN_ON(vop_data->win_size < cnt);
1139         for (i = 0; i < (vop_data->win_size - cnt); i++) {
1140                 dsp_layer_sel <<= 2;
1141                 /*
1142                  * after sort, pzpos[0] is the top zpos layer.
1143                  */
1144                 dsp_layer_sel |= pzpos[0].win_id;
1145         }
1146
1147         for (i = 0; i < cnt; i++) {
1148                 struct vop_zpos *zpos = &pzpos[i];
1149
1150                 dsp_layer_sel <<= 2;
1151                 dsp_layer_sel |= zpos->win_id;
1152         }
1153
1154         s->dsp_layer_sel = dsp_layer_sel;
1155
1156 err_free_pzpos:
1157         kfree(pzpos);
1158         return ret;
1159 }
1160
1161 static void vop_crtc_atomic_flush(struct drm_crtc *crtc,
1162                                   struct drm_crtc_state *old_crtc_state)
1163 {
1164         struct rockchip_crtc_state *s =
1165                         to_rockchip_crtc_state(crtc->state);
1166         struct vop *vop = to_vop(crtc);
1167
1168         if (WARN_ON(!vop->is_enabled))
1169                 return;
1170
1171         spin_lock(&vop->reg_lock);
1172
1173         VOP_CTRL_SET(vop, dsp_layer_sel, s->dsp_layer_sel);
1174         vop_cfg_done(vop);
1175
1176         spin_unlock(&vop->reg_lock);
1177 }
1178
1179 static void vop_crtc_atomic_begin(struct drm_crtc *crtc,
1180                                   struct drm_crtc_state *old_crtc_state)
1181 {
1182         struct vop *vop = to_vop(crtc);
1183
1184         if (crtc->state->event) {
1185                 WARN_ON(drm_crtc_vblank_get(crtc) != 0);
1186
1187                 vop->event = crtc->state->event;
1188                 crtc->state->event = NULL;
1189         }
1190 }
1191
1192 static const struct drm_crtc_helper_funcs vop_crtc_helper_funcs = {
1193         .enable = vop_crtc_enable,
1194         .disable = vop_crtc_disable,
1195         .mode_fixup = vop_crtc_mode_fixup,
1196         .atomic_check = vop_crtc_atomic_check,
1197         .atomic_flush = vop_crtc_atomic_flush,
1198         .atomic_begin = vop_crtc_atomic_begin,
1199 };
1200
1201 static void vop_crtc_destroy(struct drm_crtc *crtc)
1202 {
1203         drm_crtc_cleanup(crtc);
1204 }
1205
1206 static struct drm_crtc_state *vop_crtc_duplicate_state(struct drm_crtc *crtc)
1207 {
1208         struct rockchip_crtc_state *rockchip_state;
1209
1210         rockchip_state = kzalloc(sizeof(*rockchip_state), GFP_KERNEL);
1211         if (!rockchip_state)
1212                 return NULL;
1213
1214         __drm_atomic_helper_crtc_duplicate_state(crtc, &rockchip_state->base);
1215         return &rockchip_state->base;
1216 }
1217
1218 static void vop_crtc_destroy_state(struct drm_crtc *crtc,
1219                                    struct drm_crtc_state *state)
1220 {
1221         struct rockchip_crtc_state *s = to_rockchip_crtc_state(state);
1222
1223         __drm_atomic_helper_crtc_destroy_state(crtc, &s->base);
1224         kfree(s);
1225 }
1226
1227 static const struct drm_crtc_funcs vop_crtc_funcs = {
1228         .set_config = drm_atomic_helper_set_config,
1229         .page_flip = drm_atomic_helper_page_flip,
1230         .destroy = vop_crtc_destroy,
1231         .reset = drm_atomic_helper_crtc_reset,
1232         .atomic_duplicate_state = vop_crtc_duplicate_state,
1233         .atomic_destroy_state = vop_crtc_destroy_state,
1234 };
1235
1236 static bool vop_win_pending_is_complete(struct vop_win *vop_win)
1237 {
1238         struct drm_plane *plane = &vop_win->base;
1239         struct vop_plane_state *state = to_vop_plane_state(plane->state);
1240         dma_addr_t yrgb_mst;
1241
1242         if (!state->enable)
1243                 return VOP_WIN_GET(vop_win->vop, vop_win, enable) == 0;
1244
1245         yrgb_mst = VOP_WIN_GET_YRGBADDR(vop_win->vop, vop_win);
1246
1247         return yrgb_mst == state->yrgb_mst;
1248 }
1249
1250 static void vop_handle_vblank(struct vop *vop)
1251 {
1252         struct drm_device *drm = vop->drm_dev;
1253         struct drm_crtc *crtc = &vop->crtc;
1254         unsigned long flags;
1255         int i;
1256
1257         for (i = 0; i < vop->num_wins; i++) {
1258                 if (!vop_win_pending_is_complete(&vop->win[i]))
1259                         return;
1260         }
1261
1262         if (vop->event) {
1263                 spin_lock_irqsave(&drm->event_lock, flags);
1264
1265                 drm_crtc_send_vblank_event(crtc, vop->event);
1266                 drm_crtc_vblank_put(crtc);
1267                 vop->event = NULL;
1268
1269                 spin_unlock_irqrestore(&drm->event_lock, flags);
1270         }
1271         if (!completion_done(&vop->wait_update_complete))
1272                 complete(&vop->wait_update_complete);
1273 }
1274
1275 static irqreturn_t vop_isr(int irq, void *data)
1276 {
1277         struct vop *vop = data;
1278         struct drm_crtc *crtc = &vop->crtc;
1279         uint32_t active_irqs;
1280         unsigned long flags;
1281         int ret = IRQ_NONE;
1282
1283         /*
1284          * interrupt register has interrupt status, enable and clear bits, we
1285          * must hold irq_lock to avoid a race with enable/disable_vblank().
1286         */
1287         spin_lock_irqsave(&vop->irq_lock, flags);
1288
1289         active_irqs = VOP_INTR_GET_TYPE(vop, status, INTR_MASK);
1290         /* Clear all active interrupt sources */
1291         if (active_irqs)
1292                 VOP_INTR_SET_TYPE(vop, clear, active_irqs, 1);
1293
1294         spin_unlock_irqrestore(&vop->irq_lock, flags);
1295
1296         /* This is expected for vop iommu irqs, since the irq is shared */
1297         if (!active_irqs)
1298                 return IRQ_NONE;
1299
1300         if (active_irqs & DSP_HOLD_VALID_INTR) {
1301                 complete(&vop->dsp_hold_completion);
1302                 active_irqs &= ~DSP_HOLD_VALID_INTR;
1303                 ret = IRQ_HANDLED;
1304         }
1305
1306         if (active_irqs & FS_INTR) {
1307                 drm_crtc_handle_vblank(crtc);
1308                 vop_handle_vblank(vop);
1309                 active_irqs &= ~FS_INTR;
1310                 ret = IRQ_HANDLED;
1311         }
1312
1313         /* Unhandled irqs are spurious. */
1314         if (active_irqs)
1315                 DRM_ERROR("Unknown VOP IRQs: %#02x\n", active_irqs);
1316
1317         return ret;
1318 }
1319
1320 static int vop_plane_init(struct vop *vop, struct vop_win *win,
1321                           unsigned long possible_crtcs)
1322 {
1323         struct drm_plane *share = NULL;
1324         int ret;
1325
1326         if (win->parent)
1327                 share = &win->parent->base;
1328
1329         ret = drm_share_plane_init(vop->drm_dev, &win->base, share,
1330                                    possible_crtcs, &vop_plane_funcs,
1331                                    win->data_formats, win->nformats, win->type);
1332         if (ret) {
1333                 DRM_ERROR("failed to initialize plane\n");
1334                 return ret;
1335         }
1336         drm_plane_helper_add(&win->base, &plane_helper_funcs);
1337         drm_object_attach_property(&win->base.base,
1338                                    vop->plane_zpos_prop, win->win_id);
1339         return 0;
1340 }
1341
1342 static int vop_create_crtc(struct vop *vop)
1343 {
1344         struct device *dev = vop->dev;
1345         struct drm_device *drm_dev = vop->drm_dev;
1346         struct drm_plane *primary = NULL, *cursor = NULL, *plane, *tmp;
1347         struct drm_crtc *crtc = &vop->crtc;
1348         struct device_node *port;
1349         int ret;
1350         int i;
1351
1352         /*
1353          * Create drm_plane for primary and cursor planes first, since we need
1354          * to pass them to drm_crtc_init_with_planes, which sets the
1355          * "possible_crtcs" to the newly initialized crtc.
1356          */
1357         for (i = 0; i < vop->num_wins; i++) {
1358                 struct vop_win *win = &vop->win[i];
1359
1360                 if (win->type != DRM_PLANE_TYPE_PRIMARY &&
1361                     win->type != DRM_PLANE_TYPE_CURSOR)
1362                         continue;
1363
1364                 ret = vop_plane_init(vop, win, 0);
1365                 if (ret)
1366                         goto err_cleanup_planes;
1367
1368                 plane = &win->base;
1369                 if (plane->type == DRM_PLANE_TYPE_PRIMARY)
1370                         primary = plane;
1371                 else if (plane->type == DRM_PLANE_TYPE_CURSOR)
1372                         cursor = plane;
1373
1374         }
1375
1376         ret = drm_crtc_init_with_planes(drm_dev, crtc, primary, cursor,
1377                                         &vop_crtc_funcs, NULL);
1378         if (ret)
1379                 goto err_cleanup_planes;
1380
1381         drm_crtc_helper_add(crtc, &vop_crtc_helper_funcs);
1382
1383         /*
1384          * Create drm_planes for overlay windows with possible_crtcs restricted
1385          * to the newly created crtc.
1386          */
1387         for (i = 0; i < vop->num_wins; i++) {
1388                 struct vop_win *win = &vop->win[i];
1389                 unsigned long possible_crtcs = 1 << drm_crtc_index(crtc);
1390
1391                 if (win->type != DRM_PLANE_TYPE_OVERLAY)
1392                         continue;
1393
1394                 ret = vop_plane_init(vop, win, possible_crtcs);
1395                 if (ret)
1396                         goto err_cleanup_crtc;
1397         }
1398
1399         port = of_get_child_by_name(dev->of_node, "port");
1400         if (!port) {
1401                 DRM_ERROR("no port node found in %s\n",
1402                           dev->of_node->full_name);
1403                 ret = -ENOENT;
1404                 goto err_cleanup_crtc;
1405         }
1406
1407         init_completion(&vop->dsp_hold_completion);
1408         init_completion(&vop->wait_update_complete);
1409         crtc->port = port;
1410         rockchip_register_crtc_funcs(crtc, &private_crtc_funcs);
1411
1412         return 0;
1413
1414 err_cleanup_crtc:
1415         drm_crtc_cleanup(crtc);
1416 err_cleanup_planes:
1417         list_for_each_entry_safe(plane, tmp, &drm_dev->mode_config.plane_list,
1418                                  head)
1419                 drm_plane_cleanup(plane);
1420         return ret;
1421 }
1422
1423 static void vop_destroy_crtc(struct vop *vop)
1424 {
1425         struct drm_crtc *crtc = &vop->crtc;
1426         struct drm_device *drm_dev = vop->drm_dev;
1427         struct drm_plane *plane, *tmp;
1428
1429         rockchip_unregister_crtc_funcs(crtc);
1430         of_node_put(crtc->port);
1431
1432         /*
1433          * We need to cleanup the planes now.  Why?
1434          *
1435          * The planes are "&vop->win[i].base".  That means the memory is
1436          * all part of the big "struct vop" chunk of memory.  That memory
1437          * was devm allocated and associated with this component.  We need to
1438          * free it ourselves before vop_unbind() finishes.
1439          */
1440         list_for_each_entry_safe(plane, tmp, &drm_dev->mode_config.plane_list,
1441                                  head)
1442                 vop_plane_destroy(plane);
1443
1444         /*
1445          * Destroy CRTC after vop_plane_destroy() since vop_disable_plane()
1446          * references the CRTC.
1447          */
1448         drm_crtc_cleanup(crtc);
1449 }
1450
1451 static int vop_initial(struct vop *vop)
1452 {
1453         const struct vop_data *vop_data = vop->data;
1454         const struct vop_reg_data *init_table = vop_data->init_table;
1455         struct reset_control *ahb_rst;
1456         int i, ret;
1457
1458         vop->hclk = devm_clk_get(vop->dev, "hclk_vop");
1459         if (IS_ERR(vop->hclk)) {
1460                 dev_err(vop->dev, "failed to get hclk source\n");
1461                 return PTR_ERR(vop->hclk);
1462         }
1463         vop->aclk = devm_clk_get(vop->dev, "aclk_vop");
1464         if (IS_ERR(vop->aclk)) {
1465                 dev_err(vop->dev, "failed to get aclk source\n");
1466                 return PTR_ERR(vop->aclk);
1467         }
1468         vop->dclk = devm_clk_get(vop->dev, "dclk_vop");
1469         if (IS_ERR(vop->dclk)) {
1470                 dev_err(vop->dev, "failed to get dclk source\n");
1471                 return PTR_ERR(vop->dclk);
1472         }
1473
1474         ret = clk_prepare(vop->dclk);
1475         if (ret < 0) {
1476                 dev_err(vop->dev, "failed to prepare dclk\n");
1477                 return ret;
1478         }
1479
1480         /* Enable both the hclk and aclk to setup the vop */
1481         ret = clk_prepare_enable(vop->hclk);
1482         if (ret < 0) {
1483                 dev_err(vop->dev, "failed to prepare/enable hclk\n");
1484                 goto err_unprepare_dclk;
1485         }
1486
1487         ret = clk_prepare_enable(vop->aclk);
1488         if (ret < 0) {
1489                 dev_err(vop->dev, "failed to prepare/enable aclk\n");
1490                 goto err_disable_hclk;
1491         }
1492
1493         /*
1494          * do hclk_reset, reset all vop registers.
1495          */
1496         ahb_rst = devm_reset_control_get(vop->dev, "ahb");
1497         if (IS_ERR(ahb_rst)) {
1498                 dev_err(vop->dev, "failed to get ahb reset\n");
1499                 ret = PTR_ERR(ahb_rst);
1500                 goto err_disable_aclk;
1501         }
1502         reset_control_assert(ahb_rst);
1503         usleep_range(10, 20);
1504         reset_control_deassert(ahb_rst);
1505
1506         memcpy(vop->regsbak, vop->regs, vop->len);
1507
1508         for (i = 0; i < vop_data->table_size; i++)
1509                 vop_writel(vop, init_table[i].offset, init_table[i].value);
1510
1511         for (i = 0; i < vop->num_wins; i++) {
1512                 struct vop_win *win = &vop->win[i];
1513
1514                 VOP_WIN_SET(vop, win, enable, 0);
1515         }
1516
1517         vop_cfg_done(vop);
1518
1519         /*
1520          * do dclk_reset, let all config take affect.
1521          */
1522         vop->dclk_rst = devm_reset_control_get(vop->dev, "dclk");
1523         if (IS_ERR(vop->dclk_rst)) {
1524                 dev_err(vop->dev, "failed to get dclk reset\n");
1525                 ret = PTR_ERR(vop->dclk_rst);
1526                 goto err_disable_aclk;
1527         }
1528         reset_control_assert(vop->dclk_rst);
1529         usleep_range(10, 20);
1530         reset_control_deassert(vop->dclk_rst);
1531
1532         clk_disable(vop->hclk);
1533         clk_disable(vop->aclk);
1534
1535         vop->is_enabled = false;
1536
1537         return 0;
1538
1539 err_disable_aclk:
1540         clk_disable_unprepare(vop->aclk);
1541 err_disable_hclk:
1542         clk_disable_unprepare(vop->hclk);
1543 err_unprepare_dclk:
1544         clk_unprepare(vop->dclk);
1545         return ret;
1546 }
1547
1548 /*
1549  * Initialize the vop->win array elements.
1550  */
1551 static int vop_win_init(struct vop *vop)
1552 {
1553         const struct vop_data *vop_data = vop->data;
1554         unsigned int i, j;
1555         unsigned int num_wins = 0;
1556         struct drm_property *prop;
1557
1558         for (i = 0; i < vop_data->win_size; i++) {
1559                 struct vop_win *vop_win = &vop->win[num_wins];
1560                 const struct vop_win_data *win_data = &vop_data->win[i];
1561
1562                 vop_win->phy = win_data->phy;
1563                 vop_win->offset = win_data->base;
1564                 vop_win->type = win_data->type;
1565                 vop_win->data_formats = win_data->phy->data_formats;
1566                 vop_win->nformats = win_data->phy->nformats;
1567                 vop_win->vop = vop;
1568                 vop_win->win_id = i;
1569                 vop_win->area_id = 0;
1570                 num_wins++;
1571
1572                 for (j = 0; j < win_data->area_size; j++) {
1573                         struct vop_win *vop_area = &vop->win[num_wins];
1574                         const struct vop_win_phy *area = win_data->area[j];
1575
1576                         vop_area->parent = vop_win;
1577                         vop_area->offset = vop_win->offset;
1578                         vop_area->phy = area;
1579                         vop_area->type = DRM_PLANE_TYPE_OVERLAY;
1580                         vop_area->data_formats = vop_win->data_formats;
1581                         vop_area->nformats = vop_win->nformats;
1582                         vop_area->vop = vop;
1583                         vop_area->win_id = i;
1584                         vop_area->area_id = j;
1585                         num_wins++;
1586                 }
1587         }
1588         prop = drm_property_create_range(vop->drm_dev, DRM_MODE_PROP_ATOMIC,
1589                                          "ZPOS", 0, vop->data->win_size);
1590         if (!prop) {
1591                 DRM_ERROR("failed to create zpos property\n");
1592                 return -EINVAL;
1593         }
1594         vop->plane_zpos_prop = prop;
1595
1596         return 0;
1597 }
1598
1599 static int vop_bind(struct device *dev, struct device *master, void *data)
1600 {
1601         struct platform_device *pdev = to_platform_device(dev);
1602         const struct vop_data *vop_data;
1603         struct drm_device *drm_dev = data;
1604         struct vop *vop;
1605         struct resource *res;
1606         size_t alloc_size;
1607         int ret, irq, i;
1608         int num_wins = 0;
1609
1610         vop_data = of_device_get_match_data(dev);
1611         if (!vop_data)
1612                 return -ENODEV;
1613
1614         for (i = 0; i < vop_data->win_size; i++) {
1615                 const struct vop_win_data *win_data = &vop_data->win[i];
1616
1617                 num_wins += win_data->area_size + 1;
1618         }
1619
1620         /* Allocate vop struct and its vop_win array */
1621         alloc_size = sizeof(*vop) + sizeof(*vop->win) * num_wins;
1622         vop = devm_kzalloc(dev, alloc_size, GFP_KERNEL);
1623         if (!vop)
1624                 return -ENOMEM;
1625
1626         vop->dev = dev;
1627         vop->data = vop_data;
1628         vop->drm_dev = drm_dev;
1629         vop->num_wins = num_wins;
1630         dev_set_drvdata(dev, vop);
1631
1632         ret = vop_win_init(vop);
1633         if (ret)
1634                 return ret;
1635
1636         res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
1637         vop->len = resource_size(res);
1638         vop->regs = devm_ioremap_resource(dev, res);
1639         if (IS_ERR(vop->regs))
1640                 return PTR_ERR(vop->regs);
1641
1642         vop->regsbak = devm_kzalloc(dev, vop->len, GFP_KERNEL);
1643         if (!vop->regsbak)
1644                 return -ENOMEM;
1645
1646         ret = vop_initial(vop);
1647         if (ret < 0) {
1648                 dev_err(&pdev->dev, "cannot initial vop dev - err %d\n", ret);
1649                 return ret;
1650         }
1651
1652         irq = platform_get_irq(pdev, 0);
1653         if (irq < 0) {
1654                 dev_err(dev, "cannot find irq for vop\n");
1655                 return irq;
1656         }
1657         vop->irq = (unsigned int)irq;
1658
1659         spin_lock_init(&vop->reg_lock);
1660         spin_lock_init(&vop->irq_lock);
1661
1662         mutex_init(&vop->vsync_mutex);
1663
1664         ret = devm_request_irq(dev, vop->irq, vop_isr,
1665                                IRQF_SHARED, dev_name(dev), vop);
1666         if (ret)
1667                 return ret;
1668
1669         /* IRQ is initially disabled; it gets enabled in power_on */
1670         disable_irq(vop->irq);
1671
1672         ret = vop_create_crtc(vop);
1673         if (ret)
1674                 return ret;
1675
1676         pm_runtime_enable(&pdev->dev);
1677         return 0;
1678 }
1679
1680 static void vop_unbind(struct device *dev, struct device *master, void *data)
1681 {
1682         struct vop *vop = dev_get_drvdata(dev);
1683
1684         pm_runtime_disable(dev);
1685         vop_destroy_crtc(vop);
1686 }
1687
1688 const struct component_ops vop_component_ops = {
1689         .bind = vop_bind,
1690         .unbind = vop_unbind,
1691 };
1692 EXPORT_SYMBOL_GPL(vop_component_ops);