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_flip_work.h>
  21 #include <drm/drm_plane_helper.h>
  22
  23 #include <linux/kernel.h>
  24 #include <linux/module.h>
  25 #include <linux/platform_device.h>
  26 #include <linux/clk.h>
  27 #include <linux/iopoll.h>
  28 #include <linux/of.h>
  29 #include <linux/of_device.h>
  30 #include <linux/pm_runtime.h>
  31 #include <linux/component.h>
  32
  33 #include <linux/reset.h>
  34 #include <linux/delay.h>
  35
  36 #include "rockchip_drm_drv.h"
  37 #include "rockchip_drm_gem.h"
  38 #include "rockchip_drm_fb.h"
  39 #include "rockchip_drm_psr.h"
  40 #include "rockchip_drm_vop.h"
  41
  42 #define __REG_SET_RELAXED(x, off, mask, shift, v, write_mask) \
  43                 vop_mask_write(x, off, mask, shift, v, write_mask, true)
  44
  45 #define __REG_SET_NORMAL(x, off, mask, shift, v, write_mask) \
  46                 vop_mask_write(x, off, mask, shift, v, write_mask, false)
  47
  48 #define REG_SET(x, base, reg, v, mode) \
  49                 __REG_SET_##mode(x, base + reg.offset, \
  50                                  reg.mask, reg.shift, v, reg.write_mask)
  51 #define REG_SET_MASK(x, base, reg, mask, v, mode) \
  52                 __REG_SET_##mode(x, base + reg.offset, \
  53                                  mask, reg.shift, v, reg.write_mask)
  54
  55 #define VOP_WIN_SET(x, win, name, v) \
  56                 REG_SET(x, win->base, win->phy->name, v, RELAXED)
  57 #define VOP_SCL_SET(x, win, name, v) \
  58                 REG_SET(x, win->base, win->phy->scl->name, v, RELAXED)
  59 #define VOP_SCL_SET_EXT(x, win, name, v) \
  60                 REG_SET(x, win->base, win->phy->scl->ext->name, v, RELAXED)
  61 #define VOP_CTRL_SET(x, name, v) \
  62                 REG_SET(x, 0, (x)->data->ctrl->name, v, NORMAL)
  63
  64 #define VOP_INTR_GET(vop, name) \
  65                 vop_read_reg(vop, 0, &vop->data->ctrl->name)
  66
  67 #define VOP_INTR_SET(vop, name, mask, v) \
  68                 REG_SET_MASK(vop, 0, vop->data->intr->name, mask, v, NORMAL)
  69 #define VOP_INTR_SET_TYPE(vop, name, type, v) \
  70         do { \
  71                 int i, reg = 0, mask = 0; \
  72                 for (i = 0; i < vop->data->intr->nintrs; i++) { \
  73                         if (vop->data->intr->intrs[i] & type) { \
  74                                 reg |= (v) << i; \
  75                                 mask |= 1 << i; \
  76                         } \
  77                 } \
  78                 VOP_INTR_SET(vop, name, mask, reg); \
  79         } while (0)
  80 #define VOP_INTR_GET_TYPE(vop, name, type) \
  81                 vop_get_intr_type(vop, &vop->data->intr->name, type)
  82
  83 #define VOP_WIN_GET(x, win, name) \
  84                 vop_read_reg(x, win->base, &win->phy->name)
  85
  86 #define VOP_WIN_GET_YRGBADDR(vop, win) \
  87                 vop_readl(vop, win->base + win->phy->yrgb_mst.offset)
  88
  89 #define to_vop(x) container_of(x, struct vop, crtc)
  90 #define to_vop_win(x) container_of(x, struct vop_win, base)
  91
  92 enum vop_pending {
  93         VOP_PENDING_FB_UNREF,
  94 };
  95
  96 struct vop_win {
  97         struct drm_plane base;
  98         const struct vop_win_data *data;
  99         struct vop *vop;
 100 };
 101
 102 struct vop {
 103         struct drm_crtc crtc;
 104         struct device *dev;
 105         struct drm_device *drm_dev;
 106         bool is_enabled;
 107
 108         /* mutex vsync_ work */
 109         struct mutex vsync_mutex;
 110         bool vsync_work_pending;
 111         struct completion dsp_hold_completion;
 112
 113         /* protected by dev->event_lock */
 114         struct drm_pending_vblank_event *event;
 115
 116         struct drm_flip_work fb_unref_work;
 117         unsigned long pending;
 118
 119         struct completion line_flag_completion;
 120
 121         const struct vop_data *data;
 122
 123         uint32_t *regsbak;
 124         void __iomem *regs;
 125
 126         /* physical map length of vop register */
 127         uint32_t len;
 128
 129         /* one time only one process allowed to config the register */
 130         spinlock_t reg_lock;
 131         /* lock vop irq reg */
 132         spinlock_t irq_lock;
 133
 134         unsigned int irq;
 135
 136         /* vop AHP clk */
 137         struct clk *hclk;
 138         /* vop dclk */
 139         struct clk *dclk;
 140         /* vop share memory frequency */
 141         struct clk *aclk;
 142
 143         /* vop dclk reset */
 144         struct reset_control *dclk_rst;
 145
 146         struct vop_win win[];
 147 };
 148
 149 static inline void vop_writel(struct vop *vop, uint32_t offset, uint32_t v)
 150 {
 151         writel(v, vop->regs + offset);
 152         vop->regsbak[offset >> 2] = v;
 153 }
 154
 155 static inline uint32_t vop_readl(struct vop *vop, uint32_t offset)
 156 {
 157         return readl(vop->regs + offset);
 158 }
 159
 160 static inline uint32_t vop_read_reg(struct vop *vop, uint32_t base,
 161                                     const struct vop_reg *reg)
 162 {
 163         return (vop_readl(vop, base + reg->offset) >> reg->shift) & reg->mask;
 164 }
 165
 166 static inline void vop_mask_write(struct vop *vop, uint32_t offset,
 167                                   uint32_t mask, uint32_t shift, uint32_t v,
 168                                   bool write_mask, bool relaxed)
 169 {
 170         if (!mask)
 171                 return;
 172
 173         if (write_mask) {
 174                 v = ((v << shift) & 0xffff) | (mask << (shift + 16));
 175         } else {
 176                 uint32_t cached_val = vop->regsbak[offset >> 2];
 177
 178                 v = (cached_val & ~(mask << shift)) | ((v & mask) << shift);
 179                 vop->regsbak[offset >> 2] = v;
 180         }
 181
 182         if (relaxed)
 183                 writel_relaxed(v, vop->regs + offset);
 184         else
 185                 writel(v, vop->regs + offset);
 186 }
 187
 188 static inline uint32_t vop_get_intr_type(struct vop *vop,
 189                                          const struct vop_reg *reg, int type)
 190 {
 191         uint32_t i, ret = 0;
 192         uint32_t regs = vop_read_reg(vop, 0, reg);
 193
 194         for (i = 0; i < vop->data->intr->nintrs; i++) {
 195                 if ((type & vop->data->intr->intrs[i]) && (regs & 1 << i))
 196                         ret |= vop->data->intr->intrs[i];
 197         }
 198
 199         return ret;
 200 }
 201
 202 static inline void vop_cfg_done(struct vop *vop)
 203 {
 204         VOP_CTRL_SET(vop, cfg_done, 1);
 205 }
 206
 207 static bool has_rb_swapped(uint32_t format)
 208 {
 209         switch (format) {
 210         case DRM_FORMAT_XBGR8888:
 211         case DRM_FORMAT_ABGR8888:
 212         case DRM_FORMAT_BGR888:
 213         case DRM_FORMAT_BGR565:
 214                 return true;
 215         default:
 216                 return false;
 217         }
 218 }
 219
 220 static enum vop_data_format vop_convert_format(uint32_t format)
 221 {
 222         switch (format) {
 223         case DRM_FORMAT_XRGB8888:
 224         case DRM_FORMAT_ARGB8888:
 225         case DRM_FORMAT_XBGR8888:
 226         case DRM_FORMAT_ABGR8888:
 227                 return VOP_FMT_ARGB8888;
 228         case DRM_FORMAT_RGB888:
 229         case DRM_FORMAT_BGR888:
 230                 return VOP_FMT_RGB888;
 231         case DRM_FORMAT_RGB565:
 232         case DRM_FORMAT_BGR565:
 233                 return VOP_FMT_RGB565;
 234         case DRM_FORMAT_NV12:
 235                 return VOP_FMT_YUV420SP;
 236         case DRM_FORMAT_NV16:
 237                 return VOP_FMT_YUV422SP;
 238         case DRM_FORMAT_NV24:
 239                 return VOP_FMT_YUV444SP;
 240         default:
 241                 DRM_ERROR("unsupported format[%08x]\n", format);
 242                 return -EINVAL;
 243         }
 244 }
 245
 246 static bool is_yuv_support(uint32_t format)
 247 {
 248         switch (format) {
 249         case DRM_FORMAT_NV12:
 250         case DRM_FORMAT_NV16:
 251         case DRM_FORMAT_NV24:
 252                 return true;
 253         default:
 254                 return false;
 255         }
 256 }
 257
 258 static bool is_alpha_support(uint32_t format)
 259 {
 260         switch (format) {
 261         case DRM_FORMAT_ARGB8888:
 262         case DRM_FORMAT_ABGR8888:
 263                 return true;
 264         default:
 265                 return false;
 266         }
 267 }
 268
 269 static uint16_t scl_vop_cal_scale(enum scale_mode mode, uint32_t src,
 270                                   uint32_t dst, bool is_horizontal,
 271                                   int vsu_mode, int *vskiplines)
 272 {
 273         uint16_t val = 1 << SCL_FT_DEFAULT_FIXPOINT_SHIFT;
 274
 275         if (is_horizontal) {
 276                 if (mode == SCALE_UP)
 277                         val = GET_SCL_FT_BIC(src, dst);
 278                 else if (mode == SCALE_DOWN)
 279                         val = GET_SCL_FT_BILI_DN(src, dst);
 280         } else {
 281                 if (mode == SCALE_UP) {
 282                         if (vsu_mode == SCALE_UP_BIL)
 283                                 val = GET_SCL_FT_BILI_UP(src, dst);
 284                         else
 285                                 val = GET_SCL_FT_BIC(src, dst);
 286                 } else if (mode == SCALE_DOWN) {
 287                         if (vskiplines) {
 288                                 *vskiplines = scl_get_vskiplines(src, dst);
 289                                 val = scl_get_bili_dn_vskip(src, dst,
 290                                                             *vskiplines);
 291                         } else {
 292                                 val = GET_SCL_FT_BILI_DN(src, dst);
 293                         }
 294                 }
 295         }
 296
 297         return val;
 298 }
 299
 300 static void scl_vop_cal_scl_fac(struct vop *vop, const struct vop_win_data *win,
 301                              uint32_t src_w, uint32_t src_h, uint32_t dst_w,
 302                              uint32_t dst_h, uint32_t pixel_format)
 303 {
 304         uint16_t yrgb_hor_scl_mode, yrgb_ver_scl_mode;
 305         uint16_t cbcr_hor_scl_mode = SCALE_NONE;
 306         uint16_t cbcr_ver_scl_mode = SCALE_NONE;
 307         int hsub = drm_format_horz_chroma_subsampling(pixel_format);
 308         int vsub = drm_format_vert_chroma_subsampling(pixel_format);
 309         bool is_yuv = is_yuv_support(pixel_format);
 310         uint16_t cbcr_src_w = src_w / hsub;
 311         uint16_t cbcr_src_h = src_h / vsub;
 312         uint16_t vsu_mode;
 313         uint16_t lb_mode;
 314         uint32_t val;
 315         int vskiplines = 0;
 316
 317         if (dst_w > 3840) {
 318                 DRM_DEV_ERROR(vop->dev, "Maximum dst width (3840) exceeded\n");
 319                 return;
 320         }
 321
 322         if (!win->phy->scl->ext) {
 323                 VOP_SCL_SET(vop, win, scale_yrgb_x,
 324                             scl_cal_scale2(src_w, dst_w));
 325                 VOP_SCL_SET(vop, win, scale_yrgb_y,
 326                             scl_cal_scale2(src_h, dst_h));
 327                 if (is_yuv) {
 328                         VOP_SCL_SET(vop, win, scale_cbcr_x,
 329                                     scl_cal_scale2(cbcr_src_w, dst_w));
 330                         VOP_SCL_SET(vop, win, scale_cbcr_y,
 331                                     scl_cal_scale2(cbcr_src_h, dst_h));
 332                 }
 333                 return;
 334         }
 335
 336         yrgb_hor_scl_mode = scl_get_scl_mode(src_w, dst_w);
 337         yrgb_ver_scl_mode = scl_get_scl_mode(src_h, dst_h);
 338
 339         if (is_yuv) {
 340                 cbcr_hor_scl_mode = scl_get_scl_mode(cbcr_src_w, dst_w);
 341                 cbcr_ver_scl_mode = scl_get_scl_mode(cbcr_src_h, dst_h);
 342                 if (cbcr_hor_scl_mode == SCALE_DOWN)
 343                         lb_mode = scl_vop_cal_lb_mode(dst_w, true);
 344                 else
 345                         lb_mode = scl_vop_cal_lb_mode(cbcr_src_w, true);
 346         } else {
 347                 if (yrgb_hor_scl_mode == SCALE_DOWN)
 348                         lb_mode = scl_vop_cal_lb_mode(dst_w, false);
 349                 else
 350                         lb_mode = scl_vop_cal_lb_mode(src_w, false);
 351         }
 352
 353         VOP_SCL_SET_EXT(vop, win, lb_mode, lb_mode);
 354         if (lb_mode == LB_RGB_3840X2) {
 355                 if (yrgb_ver_scl_mode != SCALE_NONE) {
 356                         DRM_DEV_ERROR(vop->dev, "not allow yrgb ver scale\n");
 357                         return;
 358                 }
 359                 if (cbcr_ver_scl_mode != SCALE_NONE) {
 360                         DRM_DEV_ERROR(vop->dev, "not allow cbcr ver scale\n");
 361                         return;
 362                 }
 363                 vsu_mode = SCALE_UP_BIL;
 364         } else if (lb_mode == LB_RGB_2560X4) {
 365                 vsu_mode = SCALE_UP_BIL;
 366         } else {
 367                 vsu_mode = SCALE_UP_BIC;
 368         }
 369
 370         val = scl_vop_cal_scale(yrgb_hor_scl_mode, src_w, dst_w,
 371                                 true, 0, NULL);
 372         VOP_SCL_SET(vop, win, scale_yrgb_x, val);
 373         val = scl_vop_cal_scale(yrgb_ver_scl_mode, src_h, dst_h,
 374                                 false, vsu_mode, &vskiplines);
 375         VOP_SCL_SET(vop, win, scale_yrgb_y, val);
 376
 377         VOP_SCL_SET_EXT(vop, win, vsd_yrgb_gt4, vskiplines == 4);
 378         VOP_SCL_SET_EXT(vop, win, vsd_yrgb_gt2, vskiplines == 2);
 379
 380         VOP_SCL_SET_EXT(vop, win, yrgb_hor_scl_mode, yrgb_hor_scl_mode);
 381         VOP_SCL_SET_EXT(vop, win, yrgb_ver_scl_mode, yrgb_ver_scl_mode);
 382         VOP_SCL_SET_EXT(vop, win, yrgb_hsd_mode, SCALE_DOWN_BIL);
 383         VOP_SCL_SET_EXT(vop, win, yrgb_vsd_mode, SCALE_DOWN_BIL);
 384         VOP_SCL_SET_EXT(vop, win, yrgb_vsu_mode, vsu_mode);
 385         if (is_yuv) {
 386                 val = scl_vop_cal_scale(cbcr_hor_scl_mode, cbcr_src_w,
 387                                         dst_w, true, 0, NULL);
 388                 VOP_SCL_SET(vop, win, scale_cbcr_x, val);
 389                 val = scl_vop_cal_scale(cbcr_ver_scl_mode, cbcr_src_h,
 390                                         dst_h, false, vsu_mode, &vskiplines);
 391                 VOP_SCL_SET(vop, win, scale_cbcr_y, val);
 392
 393                 VOP_SCL_SET_EXT(vop, win, vsd_cbcr_gt4, vskiplines == 4);
 394                 VOP_SCL_SET_EXT(vop, win, vsd_cbcr_gt2, vskiplines == 2);
 395                 VOP_SCL_SET_EXT(vop, win, cbcr_hor_scl_mode, cbcr_hor_scl_mode);
 396                 VOP_SCL_SET_EXT(vop, win, cbcr_ver_scl_mode, cbcr_ver_scl_mode);
 397                 VOP_SCL_SET_EXT(vop, win, cbcr_hsd_mode, SCALE_DOWN_BIL);
 398                 VOP_SCL_SET_EXT(vop, win, cbcr_vsd_mode, SCALE_DOWN_BIL);
 399                 VOP_SCL_SET_EXT(vop, win, cbcr_vsu_mode, vsu_mode);
 400         }
 401 }
 402
 403 static void vop_dsp_hold_valid_irq_enable(struct vop *vop)
 404 {
 405         unsigned long flags;
 406
 407         if (WARN_ON(!vop->is_enabled))
 408                 return;
 409
 410         spin_lock_irqsave(&vop->irq_lock, flags);
 411
 412         VOP_INTR_SET_TYPE(vop, clear, DSP_HOLD_VALID_INTR, 1);
 413         VOP_INTR_SET_TYPE(vop, enable, DSP_HOLD_VALID_INTR, 1);
 414
 415         spin_unlock_irqrestore(&vop->irq_lock, flags);
 416 }
 417
 418 static void vop_dsp_hold_valid_irq_disable(struct vop *vop)
 419 {
 420         unsigned long flags;
 421
 422         if (WARN_ON(!vop->is_enabled))
 423                 return;
 424
 425         spin_lock_irqsave(&vop->irq_lock, flags);
 426
 427         VOP_INTR_SET_TYPE(vop, enable, DSP_HOLD_VALID_INTR, 0);
 428
 429         spin_unlock_irqrestore(&vop->irq_lock, flags);
 430 }
 431
 432 /*
 433  * (1) each frame starts at the start of the Vsync pulse which is signaled by
 434  *     the "FRAME_SYNC" interrupt.
 435  * (2) the active data region of each frame ends at dsp_vact_end
 436  * (3) we should program this same number (dsp_vact_end) into dsp_line_frag_num,
 437  *      to get "LINE_FLAG" interrupt at the end of the active on screen data.
 438  *
 439  * VOP_INTR_CTRL0.dsp_line_frag_num = VOP_DSP_VACT_ST_END.dsp_vact_end
 440  * Interrupts
 441  * LINE_FLAG -------------------------------+
 442  * FRAME_SYNC ----+                         |
 443  *                |                         |
 444  *                v                         v
 445  *                | Vsync | Vbp |  Vactive  | Vfp |
 446  *                        ^     ^           ^     ^
 447  *                        |     |           |     |
 448  *                        |     |           |     |
 449  * dsp_vs_end ------------+     |           |     |   VOP_DSP_VTOTAL_VS_END
 450  * dsp_vact_start --------------+           |     |   VOP_DSP_VACT_ST_END
 451  * dsp_vact_end ----------------------------+     |   VOP_DSP_VACT_ST_END
 452  * dsp_total -------------------------------------+   VOP_DSP_VTOTAL_VS_END
 453  */
 454 static bool vop_line_flag_irq_is_enabled(struct vop *vop)
 455 {
 456         uint32_t line_flag_irq;
 457         unsigned long flags;
 458
 459         spin_lock_irqsave(&vop->irq_lock, flags);
 460
 461         line_flag_irq = VOP_INTR_GET_TYPE(vop, enable, LINE_FLAG_INTR);
 462
 463         spin_unlock_irqrestore(&vop->irq_lock, flags);
 464
 465         return !!line_flag_irq;
 466 }
 467
 468 static void vop_line_flag_irq_enable(struct vop *vop, int line_num)
 469 {
 470         unsigned long flags;
 471
 472         if (WARN_ON(!vop->is_enabled))
 473                 return;
 474
 475         spin_lock_irqsave(&vop->irq_lock, flags);
 476
 477         VOP_CTRL_SET(vop, line_flag_num[0], line_num);
 478         VOP_INTR_SET_TYPE(vop, clear, LINE_FLAG_INTR, 1);
 479         VOP_INTR_SET_TYPE(vop, enable, LINE_FLAG_INTR, 1);
 480
 481         spin_unlock_irqrestore(&vop->irq_lock, flags);
 482 }
 483
 484 static void vop_line_flag_irq_disable(struct vop *vop)
 485 {
 486         unsigned long flags;
 487
 488         if (WARN_ON(!vop->is_enabled))
 489                 return;
 490
 491         spin_lock_irqsave(&vop->irq_lock, flags);
 492
 493         VOP_INTR_SET_TYPE(vop, enable, LINE_FLAG_INTR, 0);
 494
 495         spin_unlock_irqrestore(&vop->irq_lock, flags);
 496 }
 497
 498 static int vop_enable(struct drm_crtc *crtc)
 499 {
 500         struct vop *vop = to_vop(crtc);
 501         int ret;
 502
 503         ret = pm_runtime_get_sync(vop->dev);
 504         if (ret < 0) {
 505                 dev_err(vop->dev, "failed to get pm runtime: %d\n", ret);
 506                 goto err_put_pm_runtime;
 507         }
 508
 509         ret = clk_enable(vop->hclk);
 510         if (WARN_ON(ret < 0))
 511                 goto err_put_pm_runtime;
 512
 513         ret = clk_enable(vop->dclk);
 514         if (WARN_ON(ret < 0))
 515                 goto err_disable_hclk;
 516
 517         ret = clk_enable(vop->aclk);
 518         if (WARN_ON(ret < 0))
 519                 goto err_disable_dclk;
 520
 521         /*
 522          * Slave iommu shares power, irq and clock with vop.  It was associated
 523          * automatically with this master device via common driver code.
 524          * Now that we have enabled the clock we attach it to the shared drm
 525          * mapping.
 526          */
 527         ret = rockchip_drm_dma_attach_device(vop->drm_dev, vop->dev);
 528         if (ret) {
 529                 dev_err(vop->dev, "failed to attach dma mapping, %d\n", ret);
 530                 goto err_disable_aclk;
 531         }
 532
 533         memcpy(vop->regs, vop->regsbak, vop->len);
 534         vop_cfg_done(vop);
 535
 536         /*
 537          * At here, vop clock & iommu is enable, R/W vop regs would be safe.
 538          */
 539         vop->is_enabled = true;
 540
 541         spin_lock(&vop->reg_lock);
 542
 543         VOP_CTRL_SET(vop, standby, 0);
 544
 545         spin_unlock(&vop->reg_lock);
 546
 547         enable_irq(vop->irq);
 548
 549         drm_crtc_vblank_on(crtc);
 550
 551         return 0;
 552
 553 err_disable_aclk:
 554         clk_disable(vop->aclk);
 555 err_disable_dclk:
 556         clk_disable(vop->dclk);
 557 err_disable_hclk:
 558         clk_disable(vop->hclk);
 559 err_put_pm_runtime:
 560         pm_runtime_put_sync(vop->dev);
 561         return ret;
 562 }
 563
 564 static void vop_crtc_disable(struct drm_crtc *crtc)
 565 {
 566         struct vop *vop = to_vop(crtc);
 567         int i;
 568
 569         WARN_ON(vop->event);
 570
 571         rockchip_drm_psr_deactivate(&vop->crtc);
 572
 573         /*
 574          * We need to make sure that all windows are disabled before we
 575          * disable that crtc. Otherwise we might try to scan from a destroyed
 576          * buffer later.
 577          */
 578         for (i = 0; i < vop->data->win_size; i++) {
 579                 struct vop_win *vop_win = &vop->win[i];
 580                 const struct vop_win_data *win = vop_win->data;
 581
 582                 spin_lock(&vop->reg_lock);
 583                 VOP_WIN_SET(vop, win, enable, 0);
 584                 spin_unlock(&vop->reg_lock);
 585         }
 586
 587         vop_cfg_done(vop);
 588
 589         drm_crtc_vblank_off(crtc);
 590
 591         /*
 592          * Vop standby will take effect at end of current frame,
 593          * if dsp hold valid irq happen, it means standby complete.
 594          *
 595          * we must wait standby complete when we want to disable aclk,
 596          * if not, memory bus maybe dead.
 597          */
 598         reinit_completion(&vop->dsp_hold_completion);
 599         vop_dsp_hold_valid_irq_enable(vop);
 600
 601         spin_lock(&vop->reg_lock);
 602
 603         VOP_CTRL_SET(vop, standby, 1);
 604
 605         spin_unlock(&vop->reg_lock);
 606
 607         wait_for_completion(&vop->dsp_hold_completion);
 608
 609         vop_dsp_hold_valid_irq_disable(vop);
 610
 611         disable_irq(vop->irq);
 612
 613         vop->is_enabled = false;
 614
 615         /*
 616          * vop standby complete, so iommu detach is safe.
 617          */
 618         rockchip_drm_dma_detach_device(vop->drm_dev, vop->dev);
 619
 620         clk_disable(vop->dclk);
 621         clk_disable(vop->aclk);
 622         clk_disable(vop->hclk);
 623         pm_runtime_put(vop->dev);
 624
 625         if (crtc->state->event && !crtc->state->active) {
 626                 spin_lock_irq(&crtc->dev->event_lock);
 627                 drm_crtc_send_vblank_event(crtc, crtc->state->event);
 628                 spin_unlock_irq(&crtc->dev->event_lock);
 629
 630                 crtc->state->event = NULL;
 631         }
 632 }
 633
 634 static void vop_plane_destroy(struct drm_plane *plane)
 635 {
 636         drm_plane_cleanup(plane);
 637 }
 638
 639 static int vop_plane_atomic_check(struct drm_plane *plane,
 640                            struct drm_plane_state *state)
 641 {
 642         struct drm_crtc *crtc = state->crtc;
 643         struct drm_crtc_state *crtc_state;
 644         struct drm_framebuffer *fb = state->fb;
 645         struct vop_win *vop_win = to_vop_win(plane);
 646         const struct vop_win_data *win = vop_win->data;
 647         int ret;
 648         struct drm_rect clip;
 649         int min_scale = win->phy->scl ? FRAC_16_16(1, 8) :
 650                                         DRM_PLANE_HELPER_NO_SCALING;
 651         int max_scale = win->phy->scl ? FRAC_16_16(8, 1) :
 652                                         DRM_PLANE_HELPER_NO_SCALING;
 653
 654         if (!crtc || !fb)
 655                 return 0;
 656
 657         crtc_state = drm_atomic_get_existing_crtc_state(state->state, crtc);
 658         if (WARN_ON(!crtc_state))
 659                 return -EINVAL;
 660
 661         clip.x1 = 0;
 662         clip.y1 = 0;
 663         clip.x2 = crtc_state->adjusted_mode.hdisplay;
 664         clip.y2 = crtc_state->adjusted_mode.vdisplay;
 665
 666         ret = drm_plane_helper_check_state(state, &clip,
 667                                            min_scale, max_scale,
 668                                            true, true);
 669         if (ret)
 670                 return ret;
 671
 672         if (!state->visible)
 673                 return 0;
 674
 675         ret = vop_convert_format(fb->format->format);
 676         if (ret < 0)
 677                 return ret;
 678
 679         /*
 680          * Src.x1 can be odd when do clip, but yuv plane start point
 681          * need align with 2 pixel.
 682          */
 683         if (is_yuv_support(fb->format->format) && ((state->src.x1 >> 16) % 2))
 684                 return -EINVAL;
 685
 686         return 0;
 687 }
 688
 689 static void vop_plane_atomic_disable(struct drm_plane *plane,
 690                                      struct drm_plane_state *old_state)
 691 {
 692         struct vop_win *vop_win = to_vop_win(plane);
 693         const struct vop_win_data *win = vop_win->data;
 694         struct vop *vop = to_vop(old_state->crtc);
 695
 696         if (!old_state->crtc)
 697                 return;
 698
 699         spin_lock(&vop->reg_lock);
 700
 701         VOP_WIN_SET(vop, win, enable, 0);
 702
 703         spin_unlock(&vop->reg_lock);
 704 }
 705
 706 static void vop_plane_atomic_update(struct drm_plane *plane,
 707                 struct drm_plane_state *old_state)
 708 {
 709         struct drm_plane_state *state = plane->state;
 710         struct drm_crtc *crtc = state->crtc;
 711         struct vop_win *vop_win = to_vop_win(plane);
 712         const struct vop_win_data *win = vop_win->data;
 713         struct vop *vop = to_vop(state->crtc);
 714         struct drm_framebuffer *fb = state->fb;
 715         unsigned int actual_w, actual_h;
 716         unsigned int dsp_stx, dsp_sty;
 717         uint32_t act_info, dsp_info, dsp_st;
 718         struct drm_rect *src = &state->src;
 719         struct drm_rect *dest = &state->dst;
 720         struct drm_gem_object *obj, *uv_obj;
 721         struct rockchip_gem_object *rk_obj, *rk_uv_obj;
 722         unsigned long offset;
 723         dma_addr_t dma_addr;
 724         uint32_t val;
 725         bool rb_swap;
 726         int format;
 727
 728         /*
 729          * can't update plane when vop is disabled.
 730          */
 731         if (WARN_ON(!crtc))
 732                 return;
 733
 734         if (WARN_ON(!vop->is_enabled))
 735                 return;
 736
 737         if (!state->visible) {
 738                 vop_plane_atomic_disable(plane, old_state);
 739                 return;
 740         }
 741
 742         obj = rockchip_fb_get_gem_obj(fb, 0);
 743         rk_obj = to_rockchip_obj(obj);
 744
 745         actual_w = drm_rect_width(src) >> 16;
 746         actual_h = drm_rect_height(src) >> 16;
 747         act_info = (actual_h - 1) << 16 | ((actual_w - 1) & 0xffff);
 748
 749         dsp_info = (drm_rect_height(dest) - 1) << 16;
 750         dsp_info |= (drm_rect_width(dest) - 1) & 0xffff;
 751
 752         dsp_stx = dest->x1 + crtc->mode.htotal - crtc->mode.hsync_start;
 753         dsp_sty = dest->y1 + crtc->mode.vtotal - crtc->mode.vsync_start;
 754         dsp_st = dsp_sty << 16 | (dsp_stx & 0xffff);
 755
 756         offset = (src->x1 >> 16) * fb->format->cpp[0];
 757         offset += (src->y1 >> 16) * fb->pitches[0];
 758         dma_addr = rk_obj->dma_addr + offset + fb->offsets[0];
 759
 760         format = vop_convert_format(fb->format->format);
 761
 762         spin_lock(&vop->reg_lock);
 763
 764         VOP_WIN_SET(vop, win, format, format);
 765         VOP_WIN_SET(vop, win, yrgb_vir, fb->pitches[0] >> 2);
 766         VOP_WIN_SET(vop, win, yrgb_mst, dma_addr);
 767         if (is_yuv_support(fb->format->format)) {
 768                 int hsub = drm_format_horz_chroma_subsampling(fb->format->format);
 769                 int vsub = drm_format_vert_chroma_subsampling(fb->format->format);
 770                 int bpp = fb->format->cpp[1];
 771
 772                 uv_obj = rockchip_fb_get_gem_obj(fb, 1);
 773                 rk_uv_obj = to_rockchip_obj(uv_obj);
 774
 775                 offset = (src->x1 >> 16) * bpp / hsub;
 776                 offset += (src->y1 >> 16) * fb->pitches[1] / vsub;
 777
 778                 dma_addr = rk_uv_obj->dma_addr + offset + fb->offsets[1];
 779                 VOP_WIN_SET(vop, win, uv_vir, fb->pitches[1] >> 2);
 780                 VOP_WIN_SET(vop, win, uv_mst, dma_addr);
 781         }
 782
 783         if (win->phy->scl)
 784                 scl_vop_cal_scl_fac(vop, win, actual_w, actual_h,
 785                                     drm_rect_width(dest), drm_rect_height(dest),
 786                                     fb->format->format);
 787
 788         VOP_WIN_SET(vop, win, act_info, act_info);
 789         VOP_WIN_SET(vop, win, dsp_info, dsp_info);
 790         VOP_WIN_SET(vop, win, dsp_st, dsp_st);
 791
 792         rb_swap = has_rb_swapped(fb->format->format);
 793         VOP_WIN_SET(vop, win, rb_swap, rb_swap);
 794
 795         if (is_alpha_support(fb->format->format)) {
 796                 VOP_WIN_SET(vop, win, dst_alpha_ctl,
 797                             DST_FACTOR_M0(ALPHA_SRC_INVERSE));
 798                 val = SRC_ALPHA_EN(1) | SRC_COLOR_M0(ALPHA_SRC_PRE_MUL) |
 799                         SRC_ALPHA_M0(ALPHA_STRAIGHT) |
 800                         SRC_BLEND_M0(ALPHA_PER_PIX) |
 801                         SRC_ALPHA_CAL_M0(ALPHA_NO_SATURATION) |
 802                         SRC_FACTOR_M0(ALPHA_ONE);
 803                 VOP_WIN_SET(vop, win, src_alpha_ctl, val);
 804         } else {
 805                 VOP_WIN_SET(vop, win, src_alpha_ctl, SRC_ALPHA_EN(0));
 806         }
 807
 808         VOP_WIN_SET(vop, win, enable, 1);
 809         spin_unlock(&vop->reg_lock);
 810 }
 811
 812 static const struct drm_plane_helper_funcs plane_helper_funcs = {
 813         .atomic_check = vop_plane_atomic_check,
 814         .atomic_update = vop_plane_atomic_update,
 815         .atomic_disable = vop_plane_atomic_disable,
 816 };
 817
 818 static const struct drm_plane_funcs vop_plane_funcs = {
 819         .update_plane   = drm_atomic_helper_update_plane,
 820         .disable_plane  = drm_atomic_helper_disable_plane,
 821         .destroy = vop_plane_destroy,
 822         .reset = drm_atomic_helper_plane_reset,
 823         .atomic_duplicate_state = drm_atomic_helper_plane_duplicate_state,
 824         .atomic_destroy_state = drm_atomic_helper_plane_destroy_state,
 825 };
 826
 827 static int vop_crtc_enable_vblank(struct drm_crtc *crtc)
 828 {
 829         struct vop *vop = to_vop(crtc);
 830         unsigned long flags;
 831
 832         if (WARN_ON(!vop->is_enabled))
 833                 return -EPERM;
 834
 835         spin_lock_irqsave(&vop->irq_lock, flags);
 836
 837         VOP_INTR_SET_TYPE(vop, clear, FS_INTR, 1);
 838         VOP_INTR_SET_TYPE(vop, enable, FS_INTR, 1);
 839
 840         spin_unlock_irqrestore(&vop->irq_lock, flags);
 841
 842         return 0;
 843 }
 844
 845 static void vop_crtc_disable_vblank(struct drm_crtc *crtc)
 846 {
 847         struct vop *vop = to_vop(crtc);
 848         unsigned long flags;
 849
 850         if (WARN_ON(!vop->is_enabled))
 851                 return;
 852
 853         spin_lock_irqsave(&vop->irq_lock, flags);
 854
 855         VOP_INTR_SET_TYPE(vop, enable, FS_INTR, 0);
 856
 857         spin_unlock_irqrestore(&vop->irq_lock, flags);
 858 }
 859
 860 static bool vop_crtc_mode_fixup(struct drm_crtc *crtc,
 861                                 const struct drm_display_mode *mode,
 862                                 struct drm_display_mode *adjusted_mode)
 863 {
 864         struct vop *vop = to_vop(crtc);
 865
 866         adjusted_mode->clock =
 867                 clk_round_rate(vop->dclk, mode->clock * 1000) / 1000;
 868
 869         return true;
 870 }
 871
 872 static void vop_crtc_enable(struct drm_crtc *crtc)
 873 {
 874         struct vop *vop = to_vop(crtc);
 875         struct rockchip_crtc_state *s = to_rockchip_crtc_state(crtc->state);
 876         struct drm_display_mode *adjusted_mode = &crtc->state->adjusted_mode;
 877         u16 hsync_len = adjusted_mode->hsync_end - adjusted_mode->hsync_start;
 878         u16 hdisplay = adjusted_mode->hdisplay;
 879         u16 htotal = adjusted_mode->htotal;
 880         u16 hact_st = adjusted_mode->htotal - adjusted_mode->hsync_start;
 881         u16 hact_end = hact_st + hdisplay;
 882         u16 vdisplay = adjusted_mode->vdisplay;
 883         u16 vtotal = adjusted_mode->vtotal;
 884         u16 vsync_len = adjusted_mode->vsync_end - adjusted_mode->vsync_start;
 885         u16 vact_st = adjusted_mode->vtotal - adjusted_mode->vsync_start;
 886         u16 vact_end = vact_st + vdisplay;
 887         uint32_t pin_pol, val;
 888         int ret;
 889
 890         WARN_ON(vop->event);
 891
 892         ret = vop_enable(crtc);
 893         if (ret) {
 894                 DRM_DEV_ERROR(vop->dev, "Failed to enable vop (%d)\n", ret);
 895                 return;
 896         }
 897
 898         /*
 899          * If dclk rate is zero, mean that scanout is stop,
 900          * we don't need wait any more.
 901          */
 902         if (clk_get_rate(vop->dclk)) {
 903                 /*
 904                  * Rk3288 vop timing register is immediately, when configure
 905                  * display timing on display time, may cause tearing.
 906                  *
 907                  * Vop standby will take effect at end of current frame,
 908                  * if dsp hold valid irq happen, it means standby complete.
 909                  *
 910                  * mode set:
 911                  *    standby and wait complete --> |----
 912                  *                                  | display time
 913                  *                                  |----
 914                  *                                  |---> dsp hold irq
 915                  *     configure display timing --> |
 916                  *         standby exit             |
 917                  *                                  | new frame start.
 918                  */
 919
 920                 reinit_completion(&vop->dsp_hold_completion);
 921                 vop_dsp_hold_valid_irq_enable(vop);
 922
 923                 spin_lock(&vop->reg_lock);
 924
 925                 VOP_CTRL_SET(vop, standby, 1);
 926
 927                 spin_unlock(&vop->reg_lock);
 928
 929                 wait_for_completion(&vop->dsp_hold_completion);
 930
 931                 vop_dsp_hold_valid_irq_disable(vop);
 932         }
 933
 934         pin_pol = BIT(DCLK_INVERT);
 935         pin_pol |= (adjusted_mode->flags & DRM_MODE_FLAG_NHSYNC) ?
 936                    0 : BIT(HSYNC_POSITIVE);
 937         pin_pol |= (adjusted_mode->flags & DRM_MODE_FLAG_NVSYNC) ?
 938                    0 : BIT(VSYNC_POSITIVE);
 939         VOP_CTRL_SET(vop, pin_pol, pin_pol);
 940
 941         switch (s->output_type) {
 942         case DRM_MODE_CONNECTOR_LVDS:
 943                 VOP_CTRL_SET(vop, rgb_en, 1);
 944                 VOP_CTRL_SET(vop, rgb_pin_pol, pin_pol);
 945                 break;
 946         case DRM_MODE_CONNECTOR_eDP:
 947                 VOP_CTRL_SET(vop, edp_pin_pol, pin_pol);
 948                 VOP_CTRL_SET(vop, edp_en, 1);
 949                 break;
 950         case DRM_MODE_CONNECTOR_HDMIA:
 951                 VOP_CTRL_SET(vop, hdmi_pin_pol, pin_pol);
 952                 VOP_CTRL_SET(vop, hdmi_en, 1);
 953                 break;
 954         case DRM_MODE_CONNECTOR_DSI:
 955                 VOP_CTRL_SET(vop, mipi_pin_pol, pin_pol);
 956                 VOP_CTRL_SET(vop, mipi_en, 1);
 957                 break;
 958         case DRM_MODE_CONNECTOR_DisplayPort:
 959                 pin_pol &= ~BIT(DCLK_INVERT);
 960                 VOP_CTRL_SET(vop, dp_pin_pol, pin_pol);
 961                 VOP_CTRL_SET(vop, dp_en, 1);
 962                 break;
 963         default:
 964                 DRM_DEV_ERROR(vop->dev, "unsupported connector_type [%d]\n",
 965                               s->output_type);
 966         }
 967         VOP_CTRL_SET(vop, out_mode, s->output_mode);
 968
 969         VOP_CTRL_SET(vop, htotal_pw, (htotal << 16) | hsync_len);
 970         val = hact_st << 16;
 971         val |= hact_end;
 972         VOP_CTRL_SET(vop, hact_st_end, val);
 973         VOP_CTRL_SET(vop, hpost_st_end, val);
 974
 975         VOP_CTRL_SET(vop, vtotal_pw, (vtotal << 16) | vsync_len);
 976         val = vact_st << 16;
 977         val |= vact_end;
 978         VOP_CTRL_SET(vop, vact_st_end, val);
 979         VOP_CTRL_SET(vop, vpost_st_end, val);
 980
 981         clk_set_rate(vop->dclk, adjusted_mode->clock * 1000);
 982
 983         VOP_CTRL_SET(vop, standby, 0);
 984
 985         rockchip_drm_psr_activate(&vop->crtc);
 986 }
 987
 988 static bool vop_fs_irq_is_pending(struct vop *vop)
 989 {
 990         return VOP_INTR_GET_TYPE(vop, status, FS_INTR);
 991 }
 992
 993 static void vop_wait_for_irq_handler(struct vop *vop)
 994 {
 995         bool pending;
 996         int ret;
 997
 998         /*
 999          * Spin until frame start interrupt status bit goes low, which means
1000          * that interrupt handler was invoked and cleared it. The timeout of
1001          * 10 msecs is really too long, but it is just a safety measure if
1002          * something goes really wrong. The wait will only happen in the very
1003          * unlikely case of a vblank happening exactly at the same time and
1004          * shouldn't exceed microseconds range.
1005          */
1006         ret = readx_poll_timeout_atomic(vop_fs_irq_is_pending, vop, pending,
1007                                         !pending, 0, 10 * 1000);
1008         if (ret)
1009                 DRM_DEV_ERROR(vop->dev, "VOP vblank IRQ stuck for 10 ms\n");
1010
1011         synchronize_irq(vop->irq);
1012 }
1013
1014 static void vop_crtc_atomic_flush(struct drm_crtc *crtc,
1015                                   struct drm_crtc_state *old_crtc_state)
1016 {
1017         struct drm_atomic_state *old_state = old_crtc_state->state;
1018         struct drm_plane_state *old_plane_state;
1019         struct vop *vop = to_vop(crtc);
1020         struct drm_plane *plane;
1021         int i;
1022
1023         if (WARN_ON(!vop->is_enabled))
1024                 return;
1025
1026         spin_lock(&vop->reg_lock);
1027
1028         vop_cfg_done(vop);
1029
1030         spin_unlock(&vop->reg_lock);
1031
1032         /*
1033          * There is a (rather unlikely) possiblity that a vblank interrupt
1034          * fired before we set the cfg_done bit. To avoid spuriously
1035          * signalling flip completion we need to wait for it to finish.
1036          */
1037         vop_wait_for_irq_handler(vop);
1038
1039         spin_lock_irq(&crtc->dev->event_lock);
1040         if (crtc->state->event) {
1041                 WARN_ON(drm_crtc_vblank_get(crtc) != 0);
1042                 WARN_ON(vop->event);
1043
1044                 vop->event = crtc->state->event;
1045                 crtc->state->event = NULL;
1046         }
1047         spin_unlock_irq(&crtc->dev->event_lock);
1048
1049         for_each_plane_in_state(old_state, plane, old_plane_state, i) {
1050                 if (!old_plane_state->fb)
1051                         continue;
1052
1053                 if (old_plane_state->fb == plane->state->fb)
1054                         continue;
1055
1056                 drm_framebuffer_reference(old_plane_state->fb);
1057                 drm_flip_work_queue(&vop->fb_unref_work, old_plane_state->fb);
1058                 set_bit(VOP_PENDING_FB_UNREF, &vop->pending);
1059                 WARN_ON(drm_crtc_vblank_get(crtc) != 0);
1060         }
1061 }
1062
1063 static void vop_crtc_atomic_begin(struct drm_crtc *crtc,
1064                                   struct drm_crtc_state *old_crtc_state)
1065 {
1066         rockchip_drm_psr_flush(crtc);
1067 }
1068
1069 static const struct drm_crtc_helper_funcs vop_crtc_helper_funcs = {
1070         .enable = vop_crtc_enable,
1071         .disable = vop_crtc_disable,
1072         .mode_fixup = vop_crtc_mode_fixup,
1073         .atomic_flush = vop_crtc_atomic_flush,
1074         .atomic_begin = vop_crtc_atomic_begin,
1075 };
1076
1077 static void vop_crtc_destroy(struct drm_crtc *crtc)
1078 {
1079         drm_crtc_cleanup(crtc);
1080 }
1081
1082 static void vop_crtc_reset(struct drm_crtc *crtc)
1083 {
1084         if (crtc->state)
1085                 __drm_atomic_helper_crtc_destroy_state(crtc->state);
1086         kfree(crtc->state);
1087
1088         crtc->state = kzalloc(sizeof(struct rockchip_crtc_state), GFP_KERNEL);
1089         if (crtc->state)
1090                 crtc->state->crtc = crtc;
1091 }
1092
1093 static struct drm_crtc_state *vop_crtc_duplicate_state(struct drm_crtc *crtc)
1094 {
1095         struct rockchip_crtc_state *rockchip_state;
1096
1097         rockchip_state = kzalloc(sizeof(*rockchip_state), GFP_KERNEL);
1098         if (!rockchip_state)
1099                 return NULL;
1100
1101         __drm_atomic_helper_crtc_duplicate_state(crtc, &rockchip_state->base);
1102         return &rockchip_state->base;
1103 }
1104
1105 static void vop_crtc_destroy_state(struct drm_crtc *crtc,
1106                                    struct drm_crtc_state *state)
1107 {
1108         struct rockchip_crtc_state *s = to_rockchip_crtc_state(state);
1109
1110         __drm_atomic_helper_crtc_destroy_state(&s->base);
1111         kfree(s);
1112 }
1113
1114 static const struct drm_crtc_funcs vop_crtc_funcs = {
1115         .set_config = drm_atomic_helper_set_config,
1116         .page_flip = drm_atomic_helper_page_flip,
1117         .destroy = vop_crtc_destroy,
1118         .reset = vop_crtc_reset,
1119         .atomic_duplicate_state = vop_crtc_duplicate_state,
1120         .atomic_destroy_state = vop_crtc_destroy_state,
1121         .enable_vblank = vop_crtc_enable_vblank,
1122         .disable_vblank = vop_crtc_disable_vblank,
1123 };
1124
1125 static void vop_fb_unref_worker(struct drm_flip_work *work, void *val)
1126 {
1127         struct vop *vop = container_of(work, struct vop, fb_unref_work);
1128         struct drm_framebuffer *fb = val;
1129
1130         drm_crtc_vblank_put(&vop->crtc);
1131         drm_framebuffer_unreference(fb);
1132 }
1133
1134 static void vop_handle_vblank(struct vop *vop)
1135 {
1136         struct drm_device *drm = vop->drm_dev;
1137         struct drm_crtc *crtc = &vop->crtc;
1138         unsigned long flags;
1139
1140         spin_lock_irqsave(&drm->event_lock, flags);
1141         if (vop->event) {
1142                 drm_crtc_send_vblank_event(crtc, vop->event);
1143                 drm_crtc_vblank_put(crtc);
1144                 vop->event = NULL;
1145         }
1146         spin_unlock_irqrestore(&drm->event_lock, flags);
1147
1148         if (test_and_clear_bit(VOP_PENDING_FB_UNREF, &vop->pending))
1149                 drm_flip_work_commit(&vop->fb_unref_work, system_unbound_wq);
1150 }
1151
1152 static irqreturn_t vop_isr(int irq, void *data)
1153 {
1154         struct vop *vop = data;
1155         struct drm_crtc *crtc = &vop->crtc;
1156         uint32_t active_irqs;
1157         unsigned long flags;
1158         int ret = IRQ_NONE;
1159
1160         /*
1161          * interrupt register has interrupt status, enable and clear bits, we
1162          * must hold irq_lock to avoid a race with enable/disable_vblank().
1163         */
1164         spin_lock_irqsave(&vop->irq_lock, flags);
1165
1166         active_irqs = VOP_INTR_GET_TYPE(vop, status, INTR_MASK);
1167         /* Clear all active interrupt sources */
1168         if (active_irqs)
1169                 VOP_INTR_SET_TYPE(vop, clear, active_irqs, 1);
1170
1171         spin_unlock_irqrestore(&vop->irq_lock, flags);
1172
1173         /* This is expected for vop iommu irqs, since the irq is shared */
1174         if (!active_irqs)
1175                 return IRQ_NONE;
1176
1177         if (active_irqs & DSP_HOLD_VALID_INTR) {
1178                 complete(&vop->dsp_hold_completion);
1179                 active_irqs &= ~DSP_HOLD_VALID_INTR;
1180                 ret = IRQ_HANDLED;
1181         }
1182
1183         if (active_irqs & LINE_FLAG_INTR) {
1184                 complete(&vop->line_flag_completion);
1185                 active_irqs &= ~LINE_FLAG_INTR;
1186                 ret = IRQ_HANDLED;
1187         }
1188
1189         if (active_irqs & FS_INTR) {
1190                 drm_crtc_handle_vblank(crtc);
1191                 vop_handle_vblank(vop);
1192                 active_irqs &= ~FS_INTR;
1193                 ret = IRQ_HANDLED;
1194         }
1195
1196         /* Unhandled irqs are spurious. */
1197         if (active_irqs)
1198                 DRM_DEV_ERROR(vop->dev, "Unknown VOP IRQs: %#02x\n",
1199                               active_irqs);
1200
1201         return ret;
1202 }
1203
1204 static int vop_create_crtc(struct vop *vop)
1205 {
1206         const struct vop_data *vop_data = vop->data;
1207         struct device *dev = vop->dev;
1208         struct drm_device *drm_dev = vop->drm_dev;
1209         struct drm_plane *primary = NULL, *cursor = NULL, *plane, *tmp;
1210         struct drm_crtc *crtc = &vop->crtc;
1211         struct device_node *port;
1212         int ret;
1213         int i;
1214
1215         /*
1216          * Create drm_plane for primary and cursor planes first, since we need
1217          * to pass them to drm_crtc_init_with_planes, which sets the
1218          * "possible_crtcs" to the newly initialized crtc.
1219          */
1220         for (i = 0; i < vop_data->win_size; i++) {
1221                 struct vop_win *vop_win = &vop->win[i];
1222                 const struct vop_win_data *win_data = vop_win->data;
1223
1224                 if (win_data->type != DRM_PLANE_TYPE_PRIMARY &&
1225                     win_data->type != DRM_PLANE_TYPE_CURSOR)
1226                         continue;
1227
1228                 ret = drm_universal_plane_init(vop->drm_dev, &vop_win->base,
1229                                                0, &vop_plane_funcs,
1230                                                win_data->phy->data_formats,
1231                                                win_data->phy->nformats,
1232                                                win_data->type, NULL);
1233                 if (ret) {
1234                         DRM_DEV_ERROR(vop->dev, "failed to init plane %d\n",
1235                                       ret);
1236                         goto err_cleanup_planes;
1237                 }
1238
1239                 plane = &vop_win->base;
1240                 drm_plane_helper_add(plane, &plane_helper_funcs);
1241                 if (plane->type == DRM_PLANE_TYPE_PRIMARY)
1242                         primary = plane;
1243                 else if (plane->type == DRM_PLANE_TYPE_CURSOR)
1244                         cursor = plane;
1245         }
1246
1247         ret = drm_crtc_init_with_planes(drm_dev, crtc, primary, cursor,
1248                                         &vop_crtc_funcs, NULL);
1249         if (ret)
1250                 goto err_cleanup_planes;
1251
1252         drm_crtc_helper_add(crtc, &vop_crtc_helper_funcs);
1253
1254         /*
1255          * Create drm_planes for overlay windows with possible_crtcs restricted
1256          * to the newly created crtc.
1257          */
1258         for (i = 0; i < vop_data->win_size; i++) {
1259                 struct vop_win *vop_win = &vop->win[i];
1260                 const struct vop_win_data *win_data = vop_win->data;
1261                 unsigned long possible_crtcs = 1 << drm_crtc_index(crtc);
1262
1263                 if (win_data->type != DRM_PLANE_TYPE_OVERLAY)
1264                         continue;
1265
1266                 ret = drm_universal_plane_init(vop->drm_dev, &vop_win->base,
1267                                                possible_crtcs,
1268                                                &vop_plane_funcs,
1269                                                win_data->phy->data_formats,
1270                                                win_data->phy->nformats,
1271                                                win_data->type, NULL);
1272                 if (ret) {
1273                         DRM_DEV_ERROR(vop->dev, "failed to init overlay %d\n",
1274                                       ret);
1275                         goto err_cleanup_crtc;
1276                 }
1277                 drm_plane_helper_add(&vop_win->base, &plane_helper_funcs);
1278         }
1279
1280         port = of_get_child_by_name(dev->of_node, "port");
1281         if (!port) {
1282                 DRM_DEV_ERROR(vop->dev, "no port node found in %s\n",
1283                               dev->of_node->full_name);
1284                 ret = -ENOENT;
1285                 goto err_cleanup_crtc;
1286         }
1287
1288         drm_flip_work_init(&vop->fb_unref_work, "fb_unref",
1289                            vop_fb_unref_worker);
1290
1291         init_completion(&vop->dsp_hold_completion);
1292         init_completion(&vop->line_flag_completion);
1293         crtc->port = port;
1294
1295         return 0;
1296
1297 err_cleanup_crtc:
1298         drm_crtc_cleanup(crtc);
1299 err_cleanup_planes:
1300         list_for_each_entry_safe(plane, tmp, &drm_dev->mode_config.plane_list,
1301                                  head)
1302                 drm_plane_cleanup(plane);
1303         return ret;
1304 }
1305
1306 static void vop_destroy_crtc(struct vop *vop)
1307 {
1308         struct drm_crtc *crtc = &vop->crtc;
1309         struct drm_device *drm_dev = vop->drm_dev;
1310         struct drm_plane *plane, *tmp;
1311
1312         of_node_put(crtc->port);
1313
1314         /*
1315          * We need to cleanup the planes now.  Why?
1316          *
1317          * The planes are "&vop->win[i].base".  That means the memory is
1318          * all part of the big "struct vop" chunk of memory.  That memory
1319          * was devm allocated and associated with this component.  We need to
1320          * free it ourselves before vop_unbind() finishes.
1321          */
1322         list_for_each_entry_safe(plane, tmp, &drm_dev->mode_config.plane_list,
1323                                  head)
1324                 vop_plane_destroy(plane);
1325
1326         /*
1327          * Destroy CRTC after vop_plane_destroy() since vop_disable_plane()
1328          * references the CRTC.
1329          */
1330         drm_crtc_cleanup(crtc);
1331         drm_flip_work_cleanup(&vop->fb_unref_work);
1332 }
1333
1334 static int vop_initial(struct vop *vop)
1335 {
1336         const struct vop_data *vop_data = vop->data;
1337         const struct vop_reg_data *init_table = vop_data->init_table;
1338         struct reset_control *ahb_rst;
1339         int i, ret;
1340
1341         vop->hclk = devm_clk_get(vop->dev, "hclk_vop");
1342         if (IS_ERR(vop->hclk)) {
1343                 dev_err(vop->dev, "failed to get hclk source\n");
1344                 return PTR_ERR(vop->hclk);
1345         }
1346         vop->aclk = devm_clk_get(vop->dev, "aclk_vop");
1347         if (IS_ERR(vop->aclk)) {
1348                 dev_err(vop->dev, "failed to get aclk source\n");
1349                 return PTR_ERR(vop->aclk);
1350         }
1351         vop->dclk = devm_clk_get(vop->dev, "dclk_vop");
1352         if (IS_ERR(vop->dclk)) {
1353                 dev_err(vop->dev, "failed to get dclk source\n");
1354                 return PTR_ERR(vop->dclk);
1355         }
1356
1357         ret = clk_prepare(vop->dclk);
1358         if (ret < 0) {
1359                 dev_err(vop->dev, "failed to prepare dclk\n");
1360                 return ret;
1361         }
1362
1363         /* Enable both the hclk and aclk to setup the vop */
1364         ret = clk_prepare_enable(vop->hclk);
1365         if (ret < 0) {
1366                 dev_err(vop->dev, "failed to prepare/enable hclk\n");
1367                 goto err_unprepare_dclk;
1368         }
1369
1370         ret = clk_prepare_enable(vop->aclk);
1371         if (ret < 0) {
1372                 dev_err(vop->dev, "failed to prepare/enable aclk\n");
1373                 goto err_disable_hclk;
1374         }
1375
1376         /*
1377          * do hclk_reset, reset all vop registers.
1378          */
1379         ahb_rst = devm_reset_control_get(vop->dev, "ahb");
1380         if (IS_ERR(ahb_rst)) {
1381                 dev_err(vop->dev, "failed to get ahb reset\n");
1382                 ret = PTR_ERR(ahb_rst);
1383                 goto err_disable_aclk;
1384         }
1385         reset_control_assert(ahb_rst);
1386         usleep_range(10, 20);
1387         reset_control_deassert(ahb_rst);
1388
1389         memcpy(vop->regsbak, vop->regs, vop->len);
1390
1391         for (i = 0; i < vop_data->table_size; i++)
1392                 vop_writel(vop, init_table[i].offset, init_table[i].value);
1393
1394         for (i = 0; i < vop_data->win_size; i++) {
1395                 const struct vop_win_data *win = &vop_data->win[i];
1396
1397                 VOP_WIN_SET(vop, win, enable, 0);
1398         }
1399
1400         vop_cfg_done(vop);
1401
1402         /*
1403          * do dclk_reset, let all config take affect.
1404          */
1405         vop->dclk_rst = devm_reset_control_get(vop->dev, "dclk");
1406         if (IS_ERR(vop->dclk_rst)) {
1407                 dev_err(vop->dev, "failed to get dclk reset\n");
1408                 ret = PTR_ERR(vop->dclk_rst);
1409                 goto err_disable_aclk;
1410         }
1411         reset_control_assert(vop->dclk_rst);
1412         usleep_range(10, 20);
1413         reset_control_deassert(vop->dclk_rst);
1414
1415         clk_disable(vop->hclk);
1416         clk_disable(vop->aclk);
1417
1418         vop->is_enabled = false;
1419
1420         return 0;
1421
1422 err_disable_aclk:
1423         clk_disable_unprepare(vop->aclk);
1424 err_disable_hclk:
1425         clk_disable_unprepare(vop->hclk);
1426 err_unprepare_dclk:
1427         clk_unprepare(vop->dclk);
1428         return ret;
1429 }
1430
1431 /*
1432  * Initialize the vop->win array elements.
1433  */
1434 static void vop_win_init(struct vop *vop)
1435 {
1436         const struct vop_data *vop_data = vop->data;
1437         unsigned int i;
1438
1439         for (i = 0; i < vop_data->win_size; i++) {
1440                 struct vop_win *vop_win = &vop->win[i];
1441                 const struct vop_win_data *win_data = &vop_data->win[i];
1442
1443                 vop_win->data = win_data;
1444                 vop_win->vop = vop;
1445         }
1446 }
1447
1448 /**
1449  * rockchip_drm_wait_line_flag - acqiure the give line flag event
1450  * @crtc: CRTC to enable line flag
1451  * @line_num: interested line number
1452  * @mstimeout: millisecond for timeout
1453  *
1454  * Driver would hold here until the interested line flag interrupt have
1455  * happened or timeout to wait.
1456  *
1457  * Returns:
1458  * Zero on success, negative errno on failure.
1459  */
1460 int rockchip_drm_wait_line_flag(struct drm_crtc *crtc, unsigned int line_num,
1461                                 unsigned int mstimeout)
1462 {
1463         struct vop *vop = to_vop(crtc);
1464         unsigned long jiffies_left;
1465
1466         if (!crtc || !vop->is_enabled)
1467                 return -ENODEV;
1468
1469         if (line_num > crtc->mode.vtotal || mstimeout <= 0)
1470                 return -EINVAL;
1471
1472         if (vop_line_flag_irq_is_enabled(vop))
1473                 return -EBUSY;
1474
1475         reinit_completion(&vop->line_flag_completion);
1476         vop_line_flag_irq_enable(vop, line_num);
1477
1478         jiffies_left = wait_for_completion_timeout(&vop->line_flag_completion,
1479                                                    msecs_to_jiffies(mstimeout));
1480         vop_line_flag_irq_disable(vop);
1481
1482         if (jiffies_left == 0) {
1483                 dev_err(vop->dev, "Timeout waiting for IRQ\n");
1484                 return -ETIMEDOUT;
1485         }
1486
1487         return 0;
1488 }
1489 EXPORT_SYMBOL(rockchip_drm_wait_line_flag);
1490
1491 static int vop_bind(struct device *dev, struct device *master, void *data)
1492 {
1493         struct platform_device *pdev = to_platform_device(dev);
1494         const struct vop_data *vop_data;
1495         struct drm_device *drm_dev = data;
1496         struct vop *vop;
1497         struct resource *res;
1498         size_t alloc_size;
1499         int ret, irq;
1500
1501         vop_data = of_device_get_match_data(dev);
1502         if (!vop_data)
1503                 return -ENODEV;
1504
1505         /* Allocate vop struct and its vop_win array */
1506         alloc_size = sizeof(*vop) + sizeof(*vop->win) * vop_data->win_size;
1507         vop = devm_kzalloc(dev, alloc_size, GFP_KERNEL);
1508         if (!vop)
1509                 return -ENOMEM;
1510
1511         vop->dev = dev;
1512         vop->data = vop_data;
1513         vop->drm_dev = drm_dev;
1514         dev_set_drvdata(dev, vop);
1515
1516         vop_win_init(vop);
1517
1518         res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
1519         vop->len = resource_size(res);
1520         vop->regs = devm_ioremap_resource(dev, res);
1521         if (IS_ERR(vop->regs))
1522                 return PTR_ERR(vop->regs);
1523
1524         vop->regsbak = devm_kzalloc(dev, vop->len, GFP_KERNEL);
1525         if (!vop->regsbak)
1526                 return -ENOMEM;
1527
1528         ret = vop_initial(vop);
1529         if (ret < 0) {
1530                 dev_err(&pdev->dev, "cannot initial vop dev - err %d\n", ret);
1531                 return ret;
1532         }
1533
1534         irq = platform_get_irq(pdev, 0);
1535         if (irq < 0) {
1536                 dev_err(dev, "cannot find irq for vop\n");
1537                 return irq;
1538         }
1539         vop->irq = (unsigned int)irq;
1540
1541         spin_lock_init(&vop->reg_lock);
1542         spin_lock_init(&vop->irq_lock);
1543
1544         mutex_init(&vop->vsync_mutex);
1545
1546         ret = devm_request_irq(dev, vop->irq, vop_isr,
1547                                IRQF_SHARED, dev_name(dev), vop);
1548         if (ret)
1549                 return ret;
1550
1551         /* IRQ is initially disabled; it gets enabled in power_on */
1552         disable_irq(vop->irq);
1553
1554         ret = vop_create_crtc(vop);
1555         if (ret)
1556                 goto err_enable_irq;
1557
1558         pm_runtime_enable(&pdev->dev);
1559
1560         return 0;
1561
1562 err_enable_irq:
1563         enable_irq(vop->irq); /* To balance out the disable_irq above */
1564         return ret;
1565 }
1566
1567 static void vop_unbind(struct device *dev, struct device *master, void *data)
1568 {
1569         struct vop *vop = dev_get_drvdata(dev);
1570
1571         pm_runtime_disable(dev);
1572         vop_destroy_crtc(vop);
1573 }
1574
1575 const struct component_ops vop_component_ops = {
1576         .bind = vop_bind,
1577         .unbind = vop_unbind,
1578 };
1579 EXPORT_SYMBOL_GPL(vop_component_ops);