drivers/gpu/drm/msm/mdp/mdp5/mdp5_plane.c

   1 /*
   2  * Copyright (C) 2014-2015 The Linux Foundation. All rights reserved.
   3  * Copyright (C) 2013 Red Hat
   4  * Author: Rob Clark <robdclark@gmail.com>
   5  *
   6  * This program is free software; you can redistribute it and/or modify it
   7  * under the terms of the GNU General Public License version 2 as published by
   8  * the Free Software Foundation.
   9  *
  10  * This program is distributed in the hope that it will be useful, but WITHOUT
  11  * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
  12  * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License for
  13  * more details.
  14  *
  15  * You should have received a copy of the GNU General Public License along with
  16  * this program.  If not, see <http://www.gnu.org/licenses/>.
  17  */
  18
  19 #include "mdp5_kms.h"
  20
  21 struct mdp5_plane {
  22         struct drm_plane base;
  23         const char *name;
  24
  25         enum mdp5_pipe pipe;
  26
  27         spinlock_t pipe_lock;   /* protect REG_MDP5_PIPE_* registers */
  28         uint32_t reg_offset;
  29         uint32_t caps;
  30
  31         uint32_t flush_mask;    /* used to commit pipe registers */
  32
  33         uint32_t nformats;
  34         uint32_t formats[32];
  35 };
  36 #define to_mdp5_plane(x) container_of(x, struct mdp5_plane, base)
  37
  38 static int mdp5_plane_mode_set(struct drm_plane *plane,
  39                 struct drm_crtc *crtc, struct drm_framebuffer *fb,
  40                 int crtc_x, int crtc_y,
  41                 unsigned int crtc_w, unsigned int crtc_h,
  42                 uint32_t src_x, uint32_t src_y,
  43                 uint32_t src_w, uint32_t src_h);
  44
  45 static void set_scanout_locked(struct drm_plane *plane,
  46                 struct drm_framebuffer *fb);
  47
  48 static struct mdp5_kms *get_kms(struct drm_plane *plane)
  49 {
  50         struct msm_drm_private *priv = plane->dev->dev_private;
  51         return to_mdp5_kms(to_mdp_kms(priv->kms));
  52 }
  53
  54 static bool plane_enabled(struct drm_plane_state *state)
  55 {
  56         return state->fb && state->crtc;
  57 }
  58
  59 static void mdp5_plane_destroy(struct drm_plane *plane)
  60 {
  61         struct mdp5_plane *mdp5_plane = to_mdp5_plane(plane);
  62
  63         drm_plane_helper_disable(plane);
  64         drm_plane_cleanup(plane);
  65
  66         kfree(mdp5_plane);
  67 }
  68
  69 static void mdp5_plane_install_rotation_property(struct drm_device *dev,
  70                 struct drm_plane *plane)
  71 {
  72         struct mdp5_plane *mdp5_plane = to_mdp5_plane(plane);
  73
  74         if (!(mdp5_plane->caps & MDP_PIPE_CAP_HFLIP) &&
  75                 !(mdp5_plane->caps & MDP_PIPE_CAP_VFLIP))
  76                 return;
  77
  78         if (!dev->mode_config.rotation_property)
  79                 dev->mode_config.rotation_property =
  80                         drm_mode_create_rotation_property(dev,
  81                         BIT(DRM_REFLECT_X) | BIT(DRM_REFLECT_Y));
  82
  83         if (dev->mode_config.rotation_property)
  84                 drm_object_attach_property(&plane->base,
  85                         dev->mode_config.rotation_property,
  86                         0);
  87 }
  88
  89 /* helper to install properties which are common to planes and crtcs */
  90 static void mdp5_plane_install_properties(struct drm_plane *plane,
  91                 struct drm_mode_object *obj)
  92 {
  93         struct drm_device *dev = plane->dev;
  94         struct msm_drm_private *dev_priv = dev->dev_private;
  95         struct drm_property *prop;
  96
  97 #define INSTALL_PROPERTY(name, NAME, init_val, fnc, ...) do { \
  98                 prop = dev_priv->plane_property[PLANE_PROP_##NAME]; \
  99                 if (!prop) { \
 100                         prop = drm_property_##fnc(dev, 0, #name, \
 101                                 ##__VA_ARGS__); \
 102                         if (!prop) { \
 103                                 dev_warn(dev->dev, \
 104                                         "Create property %s failed\n", \
 105                                         #name); \
 106                                 return; \
 107                         } \
 108                         dev_priv->plane_property[PLANE_PROP_##NAME] = prop; \
 109                 } \
 110                 drm_object_attach_property(&plane->base, prop, init_val); \
 111         } while (0)
 112
 113 #define INSTALL_RANGE_PROPERTY(name, NAME, min, max, init_val) \
 114                 INSTALL_PROPERTY(name, NAME, init_val, \
 115                                 create_range, min, max)
 116
 117 #define INSTALL_ENUM_PROPERTY(name, NAME, init_val) \
 118                 INSTALL_PROPERTY(name, NAME, init_val, \
 119                                 create_enum, name##_prop_enum_list, \
 120                                 ARRAY_SIZE(name##_prop_enum_list))
 121
 122         INSTALL_RANGE_PROPERTY(zpos, ZPOS, 1, 255, 1);
 123
 124         mdp5_plane_install_rotation_property(dev, plane);
 125
 126 #undef INSTALL_RANGE_PROPERTY
 127 #undef INSTALL_ENUM_PROPERTY
 128 #undef INSTALL_PROPERTY
 129 }
 130
 131 static int mdp5_plane_atomic_set_property(struct drm_plane *plane,
 132                 struct drm_plane_state *state, struct drm_property *property,
 133                 uint64_t val)
 134 {
 135         struct drm_device *dev = plane->dev;
 136         struct mdp5_plane_state *pstate;
 137         struct msm_drm_private *dev_priv = dev->dev_private;
 138         int ret = 0;
 139
 140         pstate = to_mdp5_plane_state(state);
 141
 142 #define SET_PROPERTY(name, NAME, type) do { \
 143                 if (dev_priv->plane_property[PLANE_PROP_##NAME] == property) { \
 144                         pstate->name = (type)val; \
 145                         DBG("Set property %s %d", #name, (type)val); \
 146                         goto done; \
 147                 } \
 148         } while (0)
 149
 150         SET_PROPERTY(zpos, ZPOS, uint8_t);
 151
 152         dev_err(dev->dev, "Invalid property\n");
 153         ret = -EINVAL;
 154 done:
 155         return ret;
 156 #undef SET_PROPERTY
 157 }
 158
 159 static int mdp5_plane_atomic_get_property(struct drm_plane *plane,
 160                 const struct drm_plane_state *state,
 161                 struct drm_property *property, uint64_t *val)
 162 {
 163         struct drm_device *dev = plane->dev;
 164         struct mdp5_plane_state *pstate;
 165         struct msm_drm_private *dev_priv = dev->dev_private;
 166         int ret = 0;
 167
 168         pstate = to_mdp5_plane_state(state);
 169
 170 #define GET_PROPERTY(name, NAME, type) do { \
 171                 if (dev_priv->plane_property[PLANE_PROP_##NAME] == property) { \
 172                         *val = pstate->name; \
 173                         DBG("Get property %s %lld", #name, *val); \
 174                         goto done; \
 175                 } \
 176         } while (0)
 177
 178         GET_PROPERTY(zpos, ZPOS, uint8_t);
 179
 180         dev_err(dev->dev, "Invalid property\n");
 181         ret = -EINVAL;
 182 done:
 183         return ret;
 184 #undef SET_PROPERTY
 185 }
 186
 187 static void mdp5_plane_reset(struct drm_plane *plane)
 188 {
 189         struct mdp5_plane_state *mdp5_state;
 190
 191         if (plane->state && plane->state->fb)
 192                 drm_framebuffer_unreference(plane->state->fb);
 193
 194         kfree(to_mdp5_plane_state(plane->state));
 195         mdp5_state = kzalloc(sizeof(*mdp5_state), GFP_KERNEL);
 196
 197         /* assign default blend parameters */
 198         mdp5_state->alpha = 255;
 199         mdp5_state->premultiplied = 0;
 200
 201         if (plane->type == DRM_PLANE_TYPE_PRIMARY)
 202                 mdp5_state->zpos = STAGE_BASE;
 203         else
 204                 mdp5_state->zpos = STAGE0 + drm_plane_index(plane);
 205
 206         mdp5_state->base.plane = plane;
 207
 208         plane->state = &mdp5_state->base;
 209 }
 210
 211 static struct drm_plane_state *
 212 mdp5_plane_duplicate_state(struct drm_plane *plane)
 213 {
 214         struct mdp5_plane_state *mdp5_state;
 215
 216         if (WARN_ON(!plane->state))
 217                 return NULL;
 218
 219         mdp5_state = kmemdup(to_mdp5_plane_state(plane->state),
 220                         sizeof(*mdp5_state), GFP_KERNEL);
 221
 222         if (mdp5_state && mdp5_state->base.fb)
 223                 drm_framebuffer_reference(mdp5_state->base.fb);
 224
 225         mdp5_state->mode_changed = false;
 226         mdp5_state->pending = false;
 227
 228         return &mdp5_state->base;
 229 }
 230
 231 static void mdp5_plane_destroy_state(struct drm_plane *plane,
 232                 struct drm_plane_state *state)
 233 {
 234         if (state->fb)
 235                 drm_framebuffer_unreference(state->fb);
 236
 237         kfree(to_mdp5_plane_state(state));
 238 }
 239
 240 static const struct drm_plane_funcs mdp5_plane_funcs = {
 241                 .update_plane = drm_atomic_helper_update_plane,
 242                 .disable_plane = drm_atomic_helper_disable_plane,
 243                 .destroy = mdp5_plane_destroy,
 244                 .set_property = drm_atomic_helper_plane_set_property,
 245                 .atomic_set_property = mdp5_plane_atomic_set_property,
 246                 .atomic_get_property = mdp5_plane_atomic_get_property,
 247                 .reset = mdp5_plane_reset,
 248                 .atomic_duplicate_state = mdp5_plane_duplicate_state,
 249                 .atomic_destroy_state = mdp5_plane_destroy_state,
 250 };
 251
 252 static int mdp5_plane_prepare_fb(struct drm_plane *plane,
 253                 struct drm_framebuffer *fb,
 254                 const struct drm_plane_state *new_state)
 255 {
 256         struct mdp5_plane *mdp5_plane = to_mdp5_plane(plane);
 257         struct mdp5_kms *mdp5_kms = get_kms(plane);
 258
 259         DBG("%s: prepare: FB[%u]", mdp5_plane->name, fb->base.id);
 260         return msm_framebuffer_prepare(fb, mdp5_kms->id);
 261 }
 262
 263 static void mdp5_plane_cleanup_fb(struct drm_plane *plane,
 264                 struct drm_framebuffer *fb,
 265                 const struct drm_plane_state *old_state)
 266 {
 267         struct mdp5_plane *mdp5_plane = to_mdp5_plane(plane);
 268         struct mdp5_kms *mdp5_kms = get_kms(plane);
 269
 270         DBG("%s: cleanup: FB[%u]", mdp5_plane->name, fb->base.id);
 271         msm_framebuffer_cleanup(fb, mdp5_kms->id);
 272 }
 273
 274 static int mdp5_plane_atomic_check(struct drm_plane *plane,
 275                 struct drm_plane_state *state)
 276 {
 277         struct mdp5_plane *mdp5_plane = to_mdp5_plane(plane);
 278         struct drm_plane_state *old_state = plane->state;
 279         const struct mdp_format *format;
 280         bool vflip, hflip;
 281
 282         DBG("%s: check (%d -> %d)", mdp5_plane->name,
 283                         plane_enabled(old_state), plane_enabled(state));
 284
 285         if (plane_enabled(state)) {
 286                 format = to_mdp_format(msm_framebuffer_format(state->fb));
 287                 if (MDP_FORMAT_IS_YUV(format) &&
 288                         !pipe_supports_yuv(mdp5_plane->caps)) {
 289                         dev_err(plane->dev->dev,
 290                                 "Pipe doesn't support YUV\n");
 291
 292                         return -EINVAL;
 293                 }
 294
 295                 if (!(mdp5_plane->caps & MDP_PIPE_CAP_SCALE) &&
 296                         (((state->src_w >> 16) != state->crtc_w) ||
 297                         ((state->src_h >> 16) != state->crtc_h))) {
 298                         dev_err(plane->dev->dev,
 299                                 "Pipe doesn't support scaling (%dx%d -> %dx%d)\n",
 300                                 state->src_w >> 16, state->src_h >> 16,
 301                                 state->crtc_w, state->crtc_h);
 302
 303                         return -EINVAL;
 304                 }
 305
 306                 hflip = !!(state->rotation & BIT(DRM_REFLECT_X));
 307                 vflip = !!(state->rotation & BIT(DRM_REFLECT_Y));
 308                 if ((vflip && !(mdp5_plane->caps & MDP_PIPE_CAP_VFLIP)) ||
 309                         (hflip && !(mdp5_plane->caps & MDP_PIPE_CAP_HFLIP))) {
 310                         dev_err(plane->dev->dev,
 311                                 "Pipe doesn't support flip\n");
 312
 313                         return -EINVAL;
 314                 }
 315         }
 316
 317         if (plane_enabled(state) && plane_enabled(old_state)) {
 318                 /* we cannot change SMP block configuration during scanout: */
 319                 bool full_modeset = false;
 320                 if (state->fb->pixel_format != old_state->fb->pixel_format) {
 321                         DBG("%s: pixel_format change!", mdp5_plane->name);
 322                         full_modeset = true;
 323                 }
 324                 if (state->src_w != old_state->src_w) {
 325                         DBG("%s: src_w change!", mdp5_plane->name);
 326                         full_modeset = true;
 327                 }
 328                 if (to_mdp5_plane_state(old_state)->pending) {
 329                         DBG("%s: still pending!", mdp5_plane->name);
 330                         full_modeset = true;
 331                 }
 332                 if (full_modeset) {
 333                         struct drm_crtc_state *crtc_state =
 334                                         drm_atomic_get_crtc_state(state->state, state->crtc);
 335                         crtc_state->mode_changed = true;
 336                         to_mdp5_plane_state(state)->mode_changed = true;
 337                 }
 338         } else {
 339                 to_mdp5_plane_state(state)->mode_changed = true;
 340         }
 341
 342         return 0;
 343 }
 344
 345 static void mdp5_plane_atomic_update(struct drm_plane *plane,
 346                                      struct drm_plane_state *old_state)
 347 {
 348         struct mdp5_plane *mdp5_plane = to_mdp5_plane(plane);
 349         struct drm_plane_state *state = plane->state;
 350
 351         DBG("%s: update", mdp5_plane->name);
 352
 353         if (!plane_enabled(state)) {
 354                 to_mdp5_plane_state(state)->pending = true;
 355         } else if (to_mdp5_plane_state(state)->mode_changed) {
 356                 int ret;
 357                 to_mdp5_plane_state(state)->pending = true;
 358                 ret = mdp5_plane_mode_set(plane,
 359                                 state->crtc, state->fb,
 360                                 state->crtc_x, state->crtc_y,
 361                                 state->crtc_w, state->crtc_h,
 362                                 state->src_x,  state->src_y,
 363                                 state->src_w, state->src_h);
 364                 /* atomic_check should have ensured that this doesn't fail */
 365                 WARN_ON(ret < 0);
 366         } else {
 367                 unsigned long flags;
 368                 spin_lock_irqsave(&mdp5_plane->pipe_lock, flags);
 369                 set_scanout_locked(plane, state->fb);
 370                 spin_unlock_irqrestore(&mdp5_plane->pipe_lock, flags);
 371         }
 372 }
 373
 374 static const struct drm_plane_helper_funcs mdp5_plane_helper_funcs = {
 375                 .prepare_fb = mdp5_plane_prepare_fb,
 376                 .cleanup_fb = mdp5_plane_cleanup_fb,
 377                 .atomic_check = mdp5_plane_atomic_check,
 378                 .atomic_update = mdp5_plane_atomic_update,
 379 };
 380
 381 static void set_scanout_locked(struct drm_plane *plane,
 382                 struct drm_framebuffer *fb)
 383 {
 384         struct mdp5_plane *mdp5_plane = to_mdp5_plane(plane);
 385         struct mdp5_kms *mdp5_kms = get_kms(plane);
 386         enum mdp5_pipe pipe = mdp5_plane->pipe;
 387
 388         mdp5_write(mdp5_kms, REG_MDP5_PIPE_SRC_STRIDE_A(pipe),
 389                         MDP5_PIPE_SRC_STRIDE_A_P0(fb->pitches[0]) |
 390                         MDP5_PIPE_SRC_STRIDE_A_P1(fb->pitches[1]));
 391
 392         mdp5_write(mdp5_kms, REG_MDP5_PIPE_SRC_STRIDE_B(pipe),
 393                         MDP5_PIPE_SRC_STRIDE_B_P2(fb->pitches[2]) |
 394                         MDP5_PIPE_SRC_STRIDE_B_P3(fb->pitches[3]));
 395
 396         mdp5_write(mdp5_kms, REG_MDP5_PIPE_SRC0_ADDR(pipe),
 397                         msm_framebuffer_iova(fb, mdp5_kms->id, 0));
 398         mdp5_write(mdp5_kms, REG_MDP5_PIPE_SRC1_ADDR(pipe),
 399                         msm_framebuffer_iova(fb, mdp5_kms->id, 1));
 400         mdp5_write(mdp5_kms, REG_MDP5_PIPE_SRC2_ADDR(pipe),
 401                         msm_framebuffer_iova(fb, mdp5_kms->id, 2));
 402         mdp5_write(mdp5_kms, REG_MDP5_PIPE_SRC3_ADDR(pipe),
 403                         msm_framebuffer_iova(fb, mdp5_kms->id, 3));
 404
 405         plane->fb = fb;
 406 }
 407
 408 /* Note: mdp5_plane->pipe_lock must be locked */
 409 static void csc_disable(struct mdp5_kms *mdp5_kms, enum mdp5_pipe pipe)
 410 {
 411         uint32_t value = mdp5_read(mdp5_kms, REG_MDP5_PIPE_OP_MODE(pipe)) &
 412                          ~MDP5_PIPE_OP_MODE_CSC_1_EN;
 413
 414         mdp5_write(mdp5_kms, REG_MDP5_PIPE_OP_MODE(pipe), value);
 415 }
 416
 417 /* Note: mdp5_plane->pipe_lock must be locked */
 418 static void csc_enable(struct mdp5_kms *mdp5_kms, enum mdp5_pipe pipe,
 419                 struct csc_cfg *csc)
 420 {
 421         uint32_t  i, mode = 0; /* RGB, no CSC */
 422         uint32_t *matrix;
 423
 424         if (unlikely(!csc))
 425                 return;
 426
 427         if ((csc->type == CSC_YUV2RGB) || (CSC_YUV2YUV == csc->type))
 428                 mode |= MDP5_PIPE_OP_MODE_CSC_SRC_DATA_FORMAT(DATA_FORMAT_YUV);
 429         if ((csc->type == CSC_RGB2YUV) || (CSC_YUV2YUV == csc->type))
 430                 mode |= MDP5_PIPE_OP_MODE_CSC_DST_DATA_FORMAT(DATA_FORMAT_YUV);
 431         mode |= MDP5_PIPE_OP_MODE_CSC_1_EN;
 432         mdp5_write(mdp5_kms, REG_MDP5_PIPE_OP_MODE(pipe), mode);
 433
 434         matrix = csc->matrix;
 435         mdp5_write(mdp5_kms, REG_MDP5_PIPE_CSC_1_MATRIX_COEFF_0(pipe),
 436                         MDP5_PIPE_CSC_1_MATRIX_COEFF_0_COEFF_11(matrix[0]) |
 437                         MDP5_PIPE_CSC_1_MATRIX_COEFF_0_COEFF_12(matrix[1]));
 438         mdp5_write(mdp5_kms, REG_MDP5_PIPE_CSC_1_MATRIX_COEFF_1(pipe),
 439                         MDP5_PIPE_CSC_1_MATRIX_COEFF_1_COEFF_13(matrix[2]) |
 440                         MDP5_PIPE_CSC_1_MATRIX_COEFF_1_COEFF_21(matrix[3]));
 441         mdp5_write(mdp5_kms, REG_MDP5_PIPE_CSC_1_MATRIX_COEFF_2(pipe),
 442                         MDP5_PIPE_CSC_1_MATRIX_COEFF_2_COEFF_22(matrix[4]) |
 443                         MDP5_PIPE_CSC_1_MATRIX_COEFF_2_COEFF_23(matrix[5]));
 444         mdp5_write(mdp5_kms, REG_MDP5_PIPE_CSC_1_MATRIX_COEFF_3(pipe),
 445                         MDP5_PIPE_CSC_1_MATRIX_COEFF_3_COEFF_31(matrix[6]) |
 446                         MDP5_PIPE_CSC_1_MATRIX_COEFF_3_COEFF_32(matrix[7]));
 447         mdp5_write(mdp5_kms, REG_MDP5_PIPE_CSC_1_MATRIX_COEFF_4(pipe),
 448                         MDP5_PIPE_CSC_1_MATRIX_COEFF_4_COEFF_33(matrix[8]));
 449
 450         for (i = 0; i < ARRAY_SIZE(csc->pre_bias); i++) {
 451                 uint32_t *pre_clamp = csc->pre_clamp;
 452                 uint32_t *post_clamp = csc->post_clamp;
 453
 454                 mdp5_write(mdp5_kms, REG_MDP5_PIPE_CSC_1_PRE_CLAMP(pipe, i),
 455                         MDP5_PIPE_CSC_1_PRE_CLAMP_REG_HIGH(pre_clamp[2*i+1]) |
 456                         MDP5_PIPE_CSC_1_PRE_CLAMP_REG_LOW(pre_clamp[2*i]));
 457
 458                 mdp5_write(mdp5_kms, REG_MDP5_PIPE_CSC_1_POST_CLAMP(pipe, i),
 459                         MDP5_PIPE_CSC_1_POST_CLAMP_REG_HIGH(post_clamp[2*i+1]) |
 460                         MDP5_PIPE_CSC_1_POST_CLAMP_REG_LOW(post_clamp[2*i]));
 461
 462                 mdp5_write(mdp5_kms, REG_MDP5_PIPE_CSC_1_PRE_BIAS(pipe, i),
 463                         MDP5_PIPE_CSC_1_PRE_BIAS_REG_VALUE(csc->pre_bias[i]));
 464
 465                 mdp5_write(mdp5_kms, REG_MDP5_PIPE_CSC_1_POST_BIAS(pipe, i),
 466                         MDP5_PIPE_CSC_1_POST_BIAS_REG_VALUE(csc->post_bias[i]));
 467         }
 468 }
 469
 470 #define PHASE_STEP_SHIFT        21
 471 #define DOWN_SCALE_RATIO_MAX    32      /* 2^(26-21) */
 472
 473 static int calc_phase_step(uint32_t src, uint32_t dst, uint32_t *out_phase)
 474 {
 475         uint32_t unit;
 476
 477         if (src == 0 || dst == 0)
 478                 return -EINVAL;
 479
 480         /*
 481          * PHASE_STEP_X/Y is coded on 26 bits (25:0),
 482          * where 2^21 represents the unity "1" in fixed-point hardware design.
 483          * This leaves 5 bits for the integer part (downscale case):
 484          *      -> maximum downscale ratio = 0b1_1111 = 31
 485          */
 486         if (src > (dst * DOWN_SCALE_RATIO_MAX))
 487                 return -EOVERFLOW;
 488
 489         unit = 1 << PHASE_STEP_SHIFT;
 490         *out_phase = mult_frac(unit, src, dst);
 491
 492         return 0;
 493 }
 494
 495 static int calc_scalex_steps(struct drm_plane *plane,
 496                 uint32_t pixel_format, uint32_t src, uint32_t dest,
 497                 uint32_t phasex_steps[2])
 498 {
 499         struct mdp5_kms *mdp5_kms = get_kms(plane);
 500         struct device *dev = mdp5_kms->dev->dev;
 501         uint32_t phasex_step;
 502         unsigned int hsub;
 503         int ret;
 504
 505         ret = calc_phase_step(src, dest, &phasex_step);
 506         if (ret) {
 507                 dev_err(dev, "X scaling (%d->%d) failed: %d\n", src, dest, ret);
 508                 return ret;
 509         }
 510
 511         hsub = drm_format_horz_chroma_subsampling(pixel_format);
 512
 513         phasex_steps[0] = phasex_step;
 514         phasex_steps[1] = phasex_step / hsub;
 515
 516         return 0;
 517 }
 518
 519 static int calc_scaley_steps(struct drm_plane *plane,
 520                 uint32_t pixel_format, uint32_t src, uint32_t dest,
 521                 uint32_t phasey_steps[2])
 522 {
 523         struct mdp5_kms *mdp5_kms = get_kms(plane);
 524         struct device *dev = mdp5_kms->dev->dev;
 525         uint32_t phasey_step;
 526         unsigned int vsub;
 527         int ret;
 528
 529         ret = calc_phase_step(src, dest, &phasey_step);
 530         if (ret) {
 531                 dev_err(dev, "Y scaling (%d->%d) failed: %d\n", src, dest, ret);
 532                 return ret;
 533         }
 534
 535         vsub = drm_format_vert_chroma_subsampling(pixel_format);
 536
 537         phasey_steps[0] = phasey_step;
 538         phasey_steps[1] = phasey_step / vsub;
 539
 540         return 0;
 541 }
 542
 543 static uint32_t get_scale_config(enum mdp_chroma_samp_type chroma_sample,
 544                 uint32_t src, uint32_t dest, bool hor)
 545 {
 546         uint32_t y_filter =   (src <= dest) ? SCALE_FILTER_CA  : SCALE_FILTER_PCMN;
 547         uint32_t y_a_filter = (src <= dest) ? SCALE_FILTER_BIL : SCALE_FILTER_PCMN;
 548         uint32_t uv_filter = ((src / 2) <= dest) ? /* 2x upsample */
 549                         SCALE_FILTER_BIL : SCALE_FILTER_PCMN;
 550         uint32_t value = 0;
 551
 552         if (chroma_sample == CHROMA_420 || chroma_sample == CHROMA_H2V1) {
 553                 if (hor)
 554                         value = MDP5_PIPE_SCALE_CONFIG_SCALEX_EN |
 555                                 MDP5_PIPE_SCALE_CONFIG_SCALEX_FILTER_COMP_0(y_filter) |
 556                                 MDP5_PIPE_SCALE_CONFIG_SCALEX_FILTER_COMP_3(y_a_filter) |
 557                                 MDP5_PIPE_SCALE_CONFIG_SCALEX_FILTER_COMP_1_2(uv_filter);
 558                 else
 559                         value = MDP5_PIPE_SCALE_CONFIG_SCALEY_EN |
 560                                 MDP5_PIPE_SCALE_CONFIG_SCALEY_FILTER_COMP_0(y_filter) |
 561                                 MDP5_PIPE_SCALE_CONFIG_SCALEY_FILTER_COMP_3(y_a_filter) |
 562                                 MDP5_PIPE_SCALE_CONFIG_SCALEY_FILTER_COMP_1_2(uv_filter);
 563         } else if (src != dest) {
 564                 if (hor)
 565                         value = MDP5_PIPE_SCALE_CONFIG_SCALEX_EN |
 566                                 MDP5_PIPE_SCALE_CONFIG_SCALEX_FILTER_COMP_0(y_a_filter) |
 567                                 MDP5_PIPE_SCALE_CONFIG_SCALEX_FILTER_COMP_3(y_a_filter);
 568                 else
 569                         value = MDP5_PIPE_SCALE_CONFIG_SCALEY_EN |
 570                                 MDP5_PIPE_SCALE_CONFIG_SCALEY_FILTER_COMP_0(y_a_filter) |
 571                                 MDP5_PIPE_SCALE_CONFIG_SCALEY_FILTER_COMP_3(y_a_filter);
 572         }
 573
 574         return value;
 575 }
 576
 577 static int mdp5_plane_mode_set(struct drm_plane *plane,
 578                 struct drm_crtc *crtc, struct drm_framebuffer *fb,
 579                 int crtc_x, int crtc_y,
 580                 unsigned int crtc_w, unsigned int crtc_h,
 581                 uint32_t src_x, uint32_t src_y,
 582                 uint32_t src_w, uint32_t src_h)
 583 {
 584         struct mdp5_plane *mdp5_plane = to_mdp5_plane(plane);
 585         struct drm_plane_state *pstate = plane->state;
 586         struct mdp5_kms *mdp5_kms = get_kms(plane);
 587         enum mdp5_pipe pipe = mdp5_plane->pipe;
 588         const struct mdp_format *format;
 589         uint32_t nplanes, config = 0;
 590         /* below array -> index 0: comp 0/3 ; index 1: comp 1/2 */
 591         uint32_t phasex_step[2] = {0,}, phasey_step[2] = {0,};
 592         uint32_t hdecm = 0, vdecm = 0;
 593         uint32_t pix_format;
 594         bool vflip, hflip;
 595         unsigned long flags;
 596         int ret;
 597
 598         nplanes = drm_format_num_planes(fb->pixel_format);
 599
 600         /* bad formats should already be rejected: */
 601         if (WARN_ON(nplanes > pipe2nclients(pipe)))
 602                 return -EINVAL;
 603
 604         format = to_mdp_format(msm_framebuffer_format(fb));
 605         pix_format = format->base.pixel_format;
 606
 607         /* src values are in Q16 fixed point, convert to integer: */
 608         src_x = src_x >> 16;
 609         src_y = src_y >> 16;
 610         src_w = src_w >> 16;
 611         src_h = src_h >> 16;
 612
 613         DBG("%s: FB[%u] %u,%u,%u,%u -> CRTC[%u] %d,%d,%u,%u", mdp5_plane->name,
 614                         fb->base.id, src_x, src_y, src_w, src_h,
 615                         crtc->base.id, crtc_x, crtc_y, crtc_w, crtc_h);
 616
 617         /* Request some memory from the SMP: */
 618         ret = mdp5_smp_request(mdp5_kms->smp,
 619                         mdp5_plane->pipe, format, src_w, false);
 620         if (ret)
 621                 return ret;
 622
 623         /*
 624          * Currently we update the hw for allocations/requests immediately,
 625          * but once atomic modeset/pageflip is in place, the allocation
 626          * would move into atomic->check_plane_state(), while updating the
 627          * hw would remain here:
 628          */
 629         mdp5_smp_configure(mdp5_kms->smp, pipe);
 630
 631         ret = calc_scalex_steps(plane, pix_format, src_w, crtc_w, phasex_step);
 632         if (ret)
 633                 return ret;
 634
 635         ret = calc_scaley_steps(plane, pix_format, src_h, crtc_h, phasey_step);
 636         if (ret)
 637                 return ret;
 638
 639         /* TODO calc hdecm, vdecm */
 640
 641         /* SCALE is used to both scale and up-sample chroma components */
 642         config |= get_scale_config(format->chroma_sample, src_w, crtc_w, true);
 643         config |= get_scale_config(format->chroma_sample, src_h, crtc_h, false);
 644         DBG("scale config = %x", config);
 645
 646         hflip = !!(pstate->rotation & BIT(DRM_REFLECT_X));
 647         vflip = !!(pstate->rotation & BIT(DRM_REFLECT_Y));
 648
 649         spin_lock_irqsave(&mdp5_plane->pipe_lock, flags);
 650
 651         mdp5_write(mdp5_kms, REG_MDP5_PIPE_SRC_IMG_SIZE(pipe),
 652                         MDP5_PIPE_SRC_IMG_SIZE_WIDTH(fb->width) |
 653                         MDP5_PIPE_SRC_IMG_SIZE_HEIGHT(fb->height));
 654
 655         mdp5_write(mdp5_kms, REG_MDP5_PIPE_SRC_SIZE(pipe),
 656                         MDP5_PIPE_SRC_SIZE_WIDTH(src_w) |
 657                         MDP5_PIPE_SRC_SIZE_HEIGHT(src_h));
 658
 659         mdp5_write(mdp5_kms, REG_MDP5_PIPE_SRC_XY(pipe),
 660                         MDP5_PIPE_SRC_XY_X(src_x) |
 661                         MDP5_PIPE_SRC_XY_Y(src_y));
 662
 663         mdp5_write(mdp5_kms, REG_MDP5_PIPE_OUT_SIZE(pipe),
 664                         MDP5_PIPE_OUT_SIZE_WIDTH(crtc_w) |
 665                         MDP5_PIPE_OUT_SIZE_HEIGHT(crtc_h));
 666
 667         mdp5_write(mdp5_kms, REG_MDP5_PIPE_OUT_XY(pipe),
 668                         MDP5_PIPE_OUT_XY_X(crtc_x) |
 669                         MDP5_PIPE_OUT_XY_Y(crtc_y));
 670
 671         mdp5_write(mdp5_kms, REG_MDP5_PIPE_SRC_FORMAT(pipe),
 672                         MDP5_PIPE_SRC_FORMAT_A_BPC(format->bpc_a) |
 673                         MDP5_PIPE_SRC_FORMAT_R_BPC(format->bpc_r) |
 674                         MDP5_PIPE_SRC_FORMAT_G_BPC(format->bpc_g) |
 675                         MDP5_PIPE_SRC_FORMAT_B_BPC(format->bpc_b) |
 676                         COND(format->alpha_enable, MDP5_PIPE_SRC_FORMAT_ALPHA_ENABLE) |
 677                         MDP5_PIPE_SRC_FORMAT_CPP(format->cpp - 1) |
 678                         MDP5_PIPE_SRC_FORMAT_UNPACK_COUNT(format->unpack_count - 1) |
 679                         COND(format->unpack_tight, MDP5_PIPE_SRC_FORMAT_UNPACK_TIGHT) |
 680                         MDP5_PIPE_SRC_FORMAT_FETCH_TYPE(format->fetch_type) |
 681                         MDP5_PIPE_SRC_FORMAT_CHROMA_SAMP(format->chroma_sample));
 682
 683         mdp5_write(mdp5_kms, REG_MDP5_PIPE_SRC_UNPACK(pipe),
 684                         MDP5_PIPE_SRC_UNPACK_ELEM0(format->unpack[0]) |
 685                         MDP5_PIPE_SRC_UNPACK_ELEM1(format->unpack[1]) |
 686                         MDP5_PIPE_SRC_UNPACK_ELEM2(format->unpack[2]) |
 687                         MDP5_PIPE_SRC_UNPACK_ELEM3(format->unpack[3]));
 688
 689         mdp5_write(mdp5_kms, REG_MDP5_PIPE_SRC_OP_MODE(pipe),
 690                         (hflip ? MDP5_PIPE_SRC_OP_MODE_FLIP_LR : 0) |
 691                         (vflip ? MDP5_PIPE_SRC_OP_MODE_FLIP_UD : 0) |
 692                         MDP5_PIPE_SRC_OP_MODE_BWC(BWC_LOSSLESS));
 693
 694         /* not using secure mode: */
 695         mdp5_write(mdp5_kms, REG_MDP5_PIPE_SRC_ADDR_SW_STATUS(pipe), 0);
 696
 697         if (mdp5_plane->caps & MDP_PIPE_CAP_SCALE) {
 698                 mdp5_write(mdp5_kms, REG_MDP5_PIPE_SCALE_PHASE_STEP_X(pipe),
 699                                 phasex_step[0]);
 700                 mdp5_write(mdp5_kms, REG_MDP5_PIPE_SCALE_PHASE_STEP_Y(pipe),
 701                                 phasey_step[0]);
 702                 mdp5_write(mdp5_kms, REG_MDP5_PIPE_SCALE_CR_PHASE_STEP_X(pipe),
 703                                 phasex_step[1]);
 704                 mdp5_write(mdp5_kms, REG_MDP5_PIPE_SCALE_CR_PHASE_STEP_Y(pipe),
 705                                 phasey_step[1]);
 706                 mdp5_write(mdp5_kms, REG_MDP5_PIPE_DECIMATION(pipe),
 707                                 MDP5_PIPE_DECIMATION_VERT(vdecm) |
 708                                 MDP5_PIPE_DECIMATION_HORZ(hdecm));
 709                 mdp5_write(mdp5_kms, REG_MDP5_PIPE_SCALE_CONFIG(pipe), config);
 710         }
 711
 712         if (mdp5_plane->caps & MDP_PIPE_CAP_CSC) {
 713                 if (MDP_FORMAT_IS_YUV(format))
 714                         csc_enable(mdp5_kms, pipe,
 715                                         mdp_get_default_csc_cfg(CSC_YUV2RGB));
 716                 else
 717                         csc_disable(mdp5_kms, pipe);
 718         }
 719
 720         set_scanout_locked(plane, fb);
 721
 722         spin_unlock_irqrestore(&mdp5_plane->pipe_lock, flags);
 723
 724         return ret;
 725 }
 726
 727 void mdp5_plane_complete_flip(struct drm_plane *plane)
 728 {
 729         struct mdp5_kms *mdp5_kms = get_kms(plane);
 730         struct mdp5_plane *mdp5_plane = to_mdp5_plane(plane);
 731         enum mdp5_pipe pipe = mdp5_plane->pipe;
 732
 733         DBG("%s: complete flip", mdp5_plane->name);
 734
 735         mdp5_smp_commit(mdp5_kms->smp, pipe);
 736
 737         to_mdp5_plane_state(plane->state)->pending = false;
 738 }
 739
 740 enum mdp5_pipe mdp5_plane_pipe(struct drm_plane *plane)
 741 {
 742         struct mdp5_plane *mdp5_plane = to_mdp5_plane(plane);
 743         return mdp5_plane->pipe;
 744 }
 745
 746 uint32_t mdp5_plane_get_flush(struct drm_plane *plane)
 747 {
 748         struct mdp5_plane *mdp5_plane = to_mdp5_plane(plane);
 749
 750         return mdp5_plane->flush_mask;
 751 }
 752
 753 /* called after vsync in thread context */
 754 void mdp5_plane_complete_commit(struct drm_plane *plane,
 755         struct drm_plane_state *state)
 756 {
 757         struct mdp5_kms *mdp5_kms = get_kms(plane);
 758         struct mdp5_plane *mdp5_plane = to_mdp5_plane(plane);
 759         enum mdp5_pipe pipe = mdp5_plane->pipe;
 760
 761         if (!plane_enabled(plane->state)) {
 762                 DBG("%s: free SMP", mdp5_plane->name);
 763                 mdp5_smp_release(mdp5_kms->smp, pipe);
 764         }
 765 }
 766
 767 /* initialize plane */
 768 struct drm_plane *mdp5_plane_init(struct drm_device *dev,
 769                 enum mdp5_pipe pipe, bool private_plane, uint32_t reg_offset,
 770                 uint32_t caps)
 771 {
 772         struct drm_plane *plane = NULL;
 773         struct mdp5_plane *mdp5_plane;
 774         int ret;
 775         enum drm_plane_type type;
 776
 777         mdp5_plane = kzalloc(sizeof(*mdp5_plane), GFP_KERNEL);
 778         if (!mdp5_plane) {
 779                 ret = -ENOMEM;
 780                 goto fail;
 781         }
 782
 783         plane = &mdp5_plane->base;
 784
 785         mdp5_plane->pipe = pipe;
 786         mdp5_plane->name = pipe2name(pipe);
 787         mdp5_plane->caps = caps;
 788
 789         mdp5_plane->nformats = mdp_get_formats(mdp5_plane->formats,
 790                 ARRAY_SIZE(mdp5_plane->formats),
 791                 !pipe_supports_yuv(mdp5_plane->caps));
 792
 793         mdp5_plane->flush_mask = mdp_ctl_flush_mask_pipe(pipe);
 794         mdp5_plane->reg_offset = reg_offset;
 795         spin_lock_init(&mdp5_plane->pipe_lock);
 796
 797         type = private_plane ? DRM_PLANE_TYPE_PRIMARY : DRM_PLANE_TYPE_OVERLAY;
 798         ret = drm_universal_plane_init(dev, plane, 0xff, &mdp5_plane_funcs,
 799                                  mdp5_plane->formats, mdp5_plane->nformats,
 800                                  type);
 801         if (ret)
 802                 goto fail;
 803
 804         drm_plane_helper_add(plane, &mdp5_plane_helper_funcs);
 805
 806         mdp5_plane_install_properties(plane, &plane->base);
 807
 808         return plane;
 809
 810 fail:
 811         if (plane)
 812                 mdp5_plane_destroy(plane);
 813
 814         return ERR_PTR(ret);
 815 }