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                                 DRM_ROTATE_0 | DRM_REFLECT_X | 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                         DRM_ROTATE_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_plane_state *new_state)
 254 {
 255         struct mdp5_plane *mdp5_plane = to_mdp5_plane(plane);
 256         struct mdp5_kms *mdp5_kms = get_kms(plane);
 257         struct drm_framebuffer *fb = new_state->fb;
 258
 259         if (!new_state->fb)
 260                 return 0;
 261
 262         DBG("%s: prepare: FB[%u]", mdp5_plane->name, fb->base.id);
 263         return msm_framebuffer_prepare(fb, mdp5_kms->id);
 264 }
 265
 266 static void mdp5_plane_cleanup_fb(struct drm_plane *plane,
 267                                   struct drm_plane_state *old_state)
 268 {
 269         struct mdp5_plane *mdp5_plane = to_mdp5_plane(plane);
 270         struct mdp5_kms *mdp5_kms = get_kms(plane);
 271         struct drm_framebuffer *fb = old_state->fb;
 272
 273         if (!fb)
 274                 return;
 275
 276         DBG("%s: cleanup: FB[%u]", mdp5_plane->name, fb->base.id);
 277         msm_framebuffer_cleanup(fb, mdp5_kms->id);
 278 }
 279
 280 static int mdp5_plane_atomic_check(struct drm_plane *plane,
 281                 struct drm_plane_state *state)
 282 {
 283         struct mdp5_plane *mdp5_plane = to_mdp5_plane(plane);
 284         struct drm_plane_state *old_state = plane->state;
 285         const struct mdp_format *format;
 286         bool vflip, hflip;
 287
 288         DBG("%s: check (%d -> %d)", mdp5_plane->name,
 289                         plane_enabled(old_state), plane_enabled(state));
 290
 291         if (plane_enabled(state)) {
 292                 format = to_mdp_format(msm_framebuffer_format(state->fb));
 293                 if (MDP_FORMAT_IS_YUV(format) &&
 294                         !pipe_supports_yuv(mdp5_plane->caps)) {
 295                         DBG("Pipe doesn't support YUV\n");
 296
 297                         return -EINVAL;
 298                 }
 299
 300                 if (!(mdp5_plane->caps & MDP_PIPE_CAP_SCALE) &&
 301                         (((state->src_w >> 16) != state->crtc_w) ||
 302                         ((state->src_h >> 16) != state->crtc_h))) {
 303                         DBG("Pipe doesn't support scaling (%dx%d -> %dx%d)\n",
 304                                 state->src_w >> 16, state->src_h >> 16,
 305                                 state->crtc_w, state->crtc_h);
 306
 307                         return -EINVAL;
 308                 }
 309
 310                 hflip = !!(state->rotation & DRM_REFLECT_X);
 311                 vflip = !!(state->rotation & DRM_REFLECT_Y);
 312                 if ((vflip && !(mdp5_plane->caps & MDP_PIPE_CAP_VFLIP)) ||
 313                         (hflip && !(mdp5_plane->caps & MDP_PIPE_CAP_HFLIP))) {
 314                         DBG("Pipe doesn't support flip\n");
 315
 316                         return -EINVAL;
 317                 }
 318         }
 319
 320         if (plane_enabled(state) && plane_enabled(old_state)) {
 321                 /* we cannot change SMP block configuration during scanout: */
 322                 bool full_modeset = false;
 323                 if (state->fb->pixel_format != old_state->fb->pixel_format) {
 324                         DBG("%s: pixel_format change!", mdp5_plane->name);
 325                         full_modeset = true;
 326                 }
 327                 if (state->src_w != old_state->src_w) {
 328                         DBG("%s: src_w change!", mdp5_plane->name);
 329                         full_modeset = true;
 330                 }
 331                 if (to_mdp5_plane_state(old_state)->pending) {
 332                         DBG("%s: still pending!", mdp5_plane->name);
 333                         full_modeset = true;
 334                 }
 335                 if (full_modeset) {
 336                         struct drm_crtc_state *crtc_state =
 337                                         drm_atomic_get_crtc_state(state->state, state->crtc);
 338                         crtc_state->mode_changed = true;
 339                         to_mdp5_plane_state(state)->mode_changed = true;
 340                 }
 341         } else {
 342                 to_mdp5_plane_state(state)->mode_changed = true;
 343         }
 344
 345         return 0;
 346 }
 347
 348 static void mdp5_plane_atomic_update(struct drm_plane *plane,
 349                                      struct drm_plane_state *old_state)
 350 {
 351         struct mdp5_plane *mdp5_plane = to_mdp5_plane(plane);
 352         struct drm_plane_state *state = plane->state;
 353
 354         DBG("%s: update", mdp5_plane->name);
 355
 356         if (!plane_enabled(state)) {
 357                 to_mdp5_plane_state(state)->pending = true;
 358         } else if (to_mdp5_plane_state(state)->mode_changed) {
 359                 int ret;
 360                 to_mdp5_plane_state(state)->pending = true;
 361                 ret = mdp5_plane_mode_set(plane,
 362                                 state->crtc, state->fb,
 363                                 state->crtc_x, state->crtc_y,
 364                                 state->crtc_w, state->crtc_h,
 365                                 state->src_x,  state->src_y,
 366                                 state->src_w, state->src_h);
 367                 /* atomic_check should have ensured that this doesn't fail */
 368                 WARN_ON(ret < 0);
 369         } else {
 370                 unsigned long flags;
 371                 spin_lock_irqsave(&mdp5_plane->pipe_lock, flags);
 372                 set_scanout_locked(plane, state->fb);
 373                 spin_unlock_irqrestore(&mdp5_plane->pipe_lock, flags);
 374         }
 375 }
 376
 377 static const struct drm_plane_helper_funcs mdp5_plane_helper_funcs = {
 378                 .prepare_fb = mdp5_plane_prepare_fb,
 379                 .cleanup_fb = mdp5_plane_cleanup_fb,
 380                 .atomic_check = mdp5_plane_atomic_check,
 381                 .atomic_update = mdp5_plane_atomic_update,
 382 };
 383
 384 static void set_scanout_locked(struct drm_plane *plane,
 385                 struct drm_framebuffer *fb)
 386 {
 387         struct mdp5_plane *mdp5_plane = to_mdp5_plane(plane);
 388         struct mdp5_kms *mdp5_kms = get_kms(plane);
 389         enum mdp5_pipe pipe = mdp5_plane->pipe;
 390
 391         mdp5_write(mdp5_kms, REG_MDP5_PIPE_SRC_STRIDE_A(pipe),
 392                         MDP5_PIPE_SRC_STRIDE_A_P0(fb->pitches[0]) |
 393                         MDP5_PIPE_SRC_STRIDE_A_P1(fb->pitches[1]));
 394
 395         mdp5_write(mdp5_kms, REG_MDP5_PIPE_SRC_STRIDE_B(pipe),
 396                         MDP5_PIPE_SRC_STRIDE_B_P2(fb->pitches[2]) |
 397                         MDP5_PIPE_SRC_STRIDE_B_P3(fb->pitches[3]));
 398
 399         mdp5_write(mdp5_kms, REG_MDP5_PIPE_SRC0_ADDR(pipe),
 400                         msm_framebuffer_iova(fb, mdp5_kms->id, 0));
 401         mdp5_write(mdp5_kms, REG_MDP5_PIPE_SRC1_ADDR(pipe),
 402                         msm_framebuffer_iova(fb, mdp5_kms->id, 1));
 403         mdp5_write(mdp5_kms, REG_MDP5_PIPE_SRC2_ADDR(pipe),
 404                         msm_framebuffer_iova(fb, mdp5_kms->id, 2));
 405         mdp5_write(mdp5_kms, REG_MDP5_PIPE_SRC3_ADDR(pipe),
 406                         msm_framebuffer_iova(fb, mdp5_kms->id, 3));
 407
 408         plane->fb = fb;
 409 }
 410
 411 /* Note: mdp5_plane->pipe_lock must be locked */
 412 static void csc_disable(struct mdp5_kms *mdp5_kms, enum mdp5_pipe pipe)
 413 {
 414         uint32_t value = mdp5_read(mdp5_kms, REG_MDP5_PIPE_OP_MODE(pipe)) &
 415                          ~MDP5_PIPE_OP_MODE_CSC_1_EN;
 416
 417         mdp5_write(mdp5_kms, REG_MDP5_PIPE_OP_MODE(pipe), value);
 418 }
 419
 420 /* Note: mdp5_plane->pipe_lock must be locked */
 421 static void csc_enable(struct mdp5_kms *mdp5_kms, enum mdp5_pipe pipe,
 422                 struct csc_cfg *csc)
 423 {
 424         uint32_t  i, mode = 0; /* RGB, no CSC */
 425         uint32_t *matrix;
 426
 427         if (unlikely(!csc))
 428                 return;
 429
 430         if ((csc->type == CSC_YUV2RGB) || (CSC_YUV2YUV == csc->type))
 431                 mode |= MDP5_PIPE_OP_MODE_CSC_SRC_DATA_FORMAT(DATA_FORMAT_YUV);
 432         if ((csc->type == CSC_RGB2YUV) || (CSC_YUV2YUV == csc->type))
 433                 mode |= MDP5_PIPE_OP_MODE_CSC_DST_DATA_FORMAT(DATA_FORMAT_YUV);
 434         mode |= MDP5_PIPE_OP_MODE_CSC_1_EN;
 435         mdp5_write(mdp5_kms, REG_MDP5_PIPE_OP_MODE(pipe), mode);
 436
 437         matrix = csc->matrix;
 438         mdp5_write(mdp5_kms, REG_MDP5_PIPE_CSC_1_MATRIX_COEFF_0(pipe),
 439                         MDP5_PIPE_CSC_1_MATRIX_COEFF_0_COEFF_11(matrix[0]) |
 440                         MDP5_PIPE_CSC_1_MATRIX_COEFF_0_COEFF_12(matrix[1]));
 441         mdp5_write(mdp5_kms, REG_MDP5_PIPE_CSC_1_MATRIX_COEFF_1(pipe),
 442                         MDP5_PIPE_CSC_1_MATRIX_COEFF_1_COEFF_13(matrix[2]) |
 443                         MDP5_PIPE_CSC_1_MATRIX_COEFF_1_COEFF_21(matrix[3]));
 444         mdp5_write(mdp5_kms, REG_MDP5_PIPE_CSC_1_MATRIX_COEFF_2(pipe),
 445                         MDP5_PIPE_CSC_1_MATRIX_COEFF_2_COEFF_22(matrix[4]) |
 446                         MDP5_PIPE_CSC_1_MATRIX_COEFF_2_COEFF_23(matrix[5]));
 447         mdp5_write(mdp5_kms, REG_MDP5_PIPE_CSC_1_MATRIX_COEFF_3(pipe),
 448                         MDP5_PIPE_CSC_1_MATRIX_COEFF_3_COEFF_31(matrix[6]) |
 449                         MDP5_PIPE_CSC_1_MATRIX_COEFF_3_COEFF_32(matrix[7]));
 450         mdp5_write(mdp5_kms, REG_MDP5_PIPE_CSC_1_MATRIX_COEFF_4(pipe),
 451                         MDP5_PIPE_CSC_1_MATRIX_COEFF_4_COEFF_33(matrix[8]));
 452
 453         for (i = 0; i < ARRAY_SIZE(csc->pre_bias); i++) {
 454                 uint32_t *pre_clamp = csc->pre_clamp;
 455                 uint32_t *post_clamp = csc->post_clamp;
 456
 457                 mdp5_write(mdp5_kms, REG_MDP5_PIPE_CSC_1_PRE_CLAMP(pipe, i),
 458                         MDP5_PIPE_CSC_1_PRE_CLAMP_REG_HIGH(pre_clamp[2*i+1]) |
 459                         MDP5_PIPE_CSC_1_PRE_CLAMP_REG_LOW(pre_clamp[2*i]));
 460
 461                 mdp5_write(mdp5_kms, REG_MDP5_PIPE_CSC_1_POST_CLAMP(pipe, i),
 462                         MDP5_PIPE_CSC_1_POST_CLAMP_REG_HIGH(post_clamp[2*i+1]) |
 463                         MDP5_PIPE_CSC_1_POST_CLAMP_REG_LOW(post_clamp[2*i]));
 464
 465                 mdp5_write(mdp5_kms, REG_MDP5_PIPE_CSC_1_PRE_BIAS(pipe, i),
 466                         MDP5_PIPE_CSC_1_PRE_BIAS_REG_VALUE(csc->pre_bias[i]));
 467
 468                 mdp5_write(mdp5_kms, REG_MDP5_PIPE_CSC_1_POST_BIAS(pipe, i),
 469                         MDP5_PIPE_CSC_1_POST_BIAS_REG_VALUE(csc->post_bias[i]));
 470         }
 471 }
 472
 473 #define PHASE_STEP_SHIFT        21
 474 #define DOWN_SCALE_RATIO_MAX    32      /* 2^(26-21) */
 475
 476 static int calc_phase_step(uint32_t src, uint32_t dst, uint32_t *out_phase)
 477 {
 478         uint32_t unit;
 479
 480         if (src == 0 || dst == 0)
 481                 return -EINVAL;
 482
 483         /*
 484          * PHASE_STEP_X/Y is coded on 26 bits (25:0),
 485          * where 2^21 represents the unity "1" in fixed-point hardware design.
 486          * This leaves 5 bits for the integer part (downscale case):
 487          *      -> maximum downscale ratio = 0b1_1111 = 31
 488          */
 489         if (src > (dst * DOWN_SCALE_RATIO_MAX))
 490                 return -EOVERFLOW;
 491
 492         unit = 1 << PHASE_STEP_SHIFT;
 493         *out_phase = mult_frac(unit, src, dst);
 494
 495         return 0;
 496 }
 497
 498 static int calc_scalex_steps(struct drm_plane *plane,
 499                 uint32_t pixel_format, uint32_t src, uint32_t dest,
 500                 uint32_t phasex_steps[COMP_MAX])
 501 {
 502         struct mdp5_kms *mdp5_kms = get_kms(plane);
 503         struct device *dev = mdp5_kms->dev->dev;
 504         uint32_t phasex_step;
 505         unsigned int hsub;
 506         int ret;
 507
 508         ret = calc_phase_step(src, dest, &phasex_step);
 509         if (ret) {
 510                 dev_err(dev, "X scaling (%d->%d) failed: %d\n", src, dest, ret);
 511                 return ret;
 512         }
 513
 514         hsub = drm_format_horz_chroma_subsampling(pixel_format);
 515
 516         phasex_steps[COMP_0]   = phasex_step;
 517         phasex_steps[COMP_3]   = phasex_step;
 518         phasex_steps[COMP_1_2] = phasex_step / hsub;
 519
 520         return 0;
 521 }
 522
 523 static int calc_scaley_steps(struct drm_plane *plane,
 524                 uint32_t pixel_format, uint32_t src, uint32_t dest,
 525                 uint32_t phasey_steps[COMP_MAX])
 526 {
 527         struct mdp5_kms *mdp5_kms = get_kms(plane);
 528         struct device *dev = mdp5_kms->dev->dev;
 529         uint32_t phasey_step;
 530         unsigned int vsub;
 531         int ret;
 532
 533         ret = calc_phase_step(src, dest, &phasey_step);
 534         if (ret) {
 535                 dev_err(dev, "Y scaling (%d->%d) failed: %d\n", src, dest, ret);
 536                 return ret;
 537         }
 538
 539         vsub = drm_format_vert_chroma_subsampling(pixel_format);
 540
 541         phasey_steps[COMP_0]   = phasey_step;
 542         phasey_steps[COMP_3]   = phasey_step;
 543         phasey_steps[COMP_1_2] = phasey_step / vsub;
 544
 545         return 0;
 546 }
 547
 548 static uint32_t get_scale_config(const struct mdp_format *format,
 549                 uint32_t src, uint32_t dst, bool horz)
 550 {
 551         bool scaling = format->is_yuv ? true : (src != dst);
 552         uint32_t sub, pix_fmt = format->base.pixel_format;
 553         uint32_t ya_filter, uv_filter;
 554         bool yuv = format->is_yuv;
 555
 556         if (!scaling)
 557                 return 0;
 558
 559         if (yuv) {
 560                 sub = horz ? drm_format_horz_chroma_subsampling(pix_fmt) :
 561                              drm_format_vert_chroma_subsampling(pix_fmt);
 562                 uv_filter = ((src / sub) <= dst) ?
 563                                    SCALE_FILTER_BIL : SCALE_FILTER_PCMN;
 564         }
 565         ya_filter = (src <= dst) ? SCALE_FILTER_BIL : SCALE_FILTER_PCMN;
 566
 567         if (horz)
 568                 return  MDP5_PIPE_SCALE_CONFIG_SCALEX_EN |
 569                         MDP5_PIPE_SCALE_CONFIG_SCALEX_FILTER_COMP_0(ya_filter) |
 570                         MDP5_PIPE_SCALE_CONFIG_SCALEX_FILTER_COMP_3(ya_filter) |
 571                         COND(yuv, MDP5_PIPE_SCALE_CONFIG_SCALEX_FILTER_COMP_1_2(uv_filter));
 572         else
 573                 return  MDP5_PIPE_SCALE_CONFIG_SCALEY_EN |
 574                         MDP5_PIPE_SCALE_CONFIG_SCALEY_FILTER_COMP_0(ya_filter) |
 575                         MDP5_PIPE_SCALE_CONFIG_SCALEY_FILTER_COMP_3(ya_filter) |
 576                         COND(yuv, MDP5_PIPE_SCALE_CONFIG_SCALEY_FILTER_COMP_1_2(uv_filter));
 577 }
 578
 579 static void calc_pixel_ext(const struct mdp_format *format,
 580                 uint32_t src, uint32_t dst, uint32_t phase_step[2],
 581                 int pix_ext_edge1[COMP_MAX], int pix_ext_edge2[COMP_MAX],
 582                 bool horz)
 583 {
 584         bool scaling = format->is_yuv ? true : (src != dst);
 585         int i;
 586
 587         /*
 588          * Note:
 589          * We assume here that:
 590          *     1. PCMN filter is used for downscale
 591          *     2. bilinear filter is used for upscale
 592          *     3. we are in a single pipe configuration
 593          */
 594
 595         for (i = 0; i < COMP_MAX; i++) {
 596                 pix_ext_edge1[i] = 0;
 597                 pix_ext_edge2[i] = scaling ? 1 : 0;
 598         }
 599 }
 600
 601 static void mdp5_write_pixel_ext(struct mdp5_kms *mdp5_kms, enum mdp5_pipe pipe,
 602         const struct mdp_format *format,
 603         uint32_t src_w, int pe_left[COMP_MAX], int pe_right[COMP_MAX],
 604         uint32_t src_h, int pe_top[COMP_MAX], int pe_bottom[COMP_MAX])
 605 {
 606         uint32_t pix_fmt = format->base.pixel_format;
 607         uint32_t lr, tb, req;
 608         int i;
 609
 610         for (i = 0; i < COMP_MAX; i++) {
 611                 uint32_t roi_w = src_w;
 612                 uint32_t roi_h = src_h;
 613
 614                 if (format->is_yuv && i == COMP_1_2) {
 615                         roi_w /= drm_format_horz_chroma_subsampling(pix_fmt);
 616                         roi_h /= drm_format_vert_chroma_subsampling(pix_fmt);
 617                 }
 618
 619                 lr  = (pe_left[i] >= 0) ?
 620                         MDP5_PIPE_SW_PIX_EXT_LR_LEFT_RPT(pe_left[i]) :
 621                         MDP5_PIPE_SW_PIX_EXT_LR_LEFT_OVF(pe_left[i]);
 622
 623                 lr |= (pe_right[i] >= 0) ?
 624                         MDP5_PIPE_SW_PIX_EXT_LR_RIGHT_RPT(pe_right[i]) :
 625                         MDP5_PIPE_SW_PIX_EXT_LR_RIGHT_OVF(pe_right[i]);
 626
 627                 tb  = (pe_top[i] >= 0) ?
 628                         MDP5_PIPE_SW_PIX_EXT_TB_TOP_RPT(pe_top[i]) :
 629                         MDP5_PIPE_SW_PIX_EXT_TB_TOP_OVF(pe_top[i]);
 630
 631                 tb |= (pe_bottom[i] >= 0) ?
 632                         MDP5_PIPE_SW_PIX_EXT_TB_BOTTOM_RPT(pe_bottom[i]) :
 633                         MDP5_PIPE_SW_PIX_EXT_TB_BOTTOM_OVF(pe_bottom[i]);
 634
 635                 req  = MDP5_PIPE_SW_PIX_EXT_REQ_PIXELS_LEFT_RIGHT(roi_w +
 636                                 pe_left[i] + pe_right[i]);
 637
 638                 req |= MDP5_PIPE_SW_PIX_EXT_REQ_PIXELS_TOP_BOTTOM(roi_h +
 639                                 pe_top[i] + pe_bottom[i]);
 640
 641                 mdp5_write(mdp5_kms, REG_MDP5_PIPE_SW_PIX_EXT_LR(pipe, i), lr);
 642                 mdp5_write(mdp5_kms, REG_MDP5_PIPE_SW_PIX_EXT_TB(pipe, i), tb);
 643                 mdp5_write(mdp5_kms, REG_MDP5_PIPE_SW_PIX_EXT_REQ_PIXELS(pipe, i), req);
 644
 645                 DBG("comp-%d (L/R): rpt=%d/%d, ovf=%d/%d, req=%d", i,
 646                         FIELD(lr,  MDP5_PIPE_SW_PIX_EXT_LR_LEFT_RPT),
 647                         FIELD(lr,  MDP5_PIPE_SW_PIX_EXT_LR_RIGHT_RPT),
 648                         FIELD(lr,  MDP5_PIPE_SW_PIX_EXT_LR_LEFT_OVF),
 649                         FIELD(lr,  MDP5_PIPE_SW_PIX_EXT_LR_RIGHT_OVF),
 650                         FIELD(req, MDP5_PIPE_SW_PIX_EXT_REQ_PIXELS_LEFT_RIGHT));
 651
 652                 DBG("comp-%d (T/B): rpt=%d/%d, ovf=%d/%d, req=%d", i,
 653                         FIELD(tb,  MDP5_PIPE_SW_PIX_EXT_TB_TOP_RPT),
 654                         FIELD(tb,  MDP5_PIPE_SW_PIX_EXT_TB_BOTTOM_RPT),
 655                         FIELD(tb,  MDP5_PIPE_SW_PIX_EXT_TB_TOP_OVF),
 656                         FIELD(tb,  MDP5_PIPE_SW_PIX_EXT_TB_BOTTOM_OVF),
 657                         FIELD(req, MDP5_PIPE_SW_PIX_EXT_REQ_PIXELS_TOP_BOTTOM));
 658         }
 659 }
 660
 661
 662 static int mdp5_plane_mode_set(struct drm_plane *plane,
 663                 struct drm_crtc *crtc, struct drm_framebuffer *fb,
 664                 int crtc_x, int crtc_y,
 665                 unsigned int crtc_w, unsigned int crtc_h,
 666                 uint32_t src_x, uint32_t src_y,
 667                 uint32_t src_w, uint32_t src_h)
 668 {
 669         struct mdp5_plane *mdp5_plane = to_mdp5_plane(plane);
 670         struct drm_plane_state *pstate = plane->state;
 671         struct mdp5_kms *mdp5_kms = get_kms(plane);
 672         enum mdp5_pipe pipe = mdp5_plane->pipe;
 673         const struct mdp_format *format;
 674         uint32_t nplanes, config = 0;
 675         uint32_t phasex_step[COMP_MAX] = {0,}, phasey_step[COMP_MAX] = {0,};
 676         bool pe = mdp5_plane->caps & MDP_PIPE_CAP_SW_PIX_EXT;
 677         int pe_left[COMP_MAX], pe_right[COMP_MAX];
 678         int pe_top[COMP_MAX], pe_bottom[COMP_MAX];
 679         uint32_t hdecm = 0, vdecm = 0;
 680         uint32_t pix_format;
 681         bool vflip, hflip;
 682         unsigned long flags;
 683         int ret;
 684
 685         nplanes = drm_format_num_planes(fb->pixel_format);
 686
 687         /* bad formats should already be rejected: */
 688         if (WARN_ON(nplanes > pipe2nclients(pipe)))
 689                 return -EINVAL;
 690
 691         format = to_mdp_format(msm_framebuffer_format(fb));
 692         pix_format = format->base.pixel_format;
 693
 694         /* src values are in Q16 fixed point, convert to integer: */
 695         src_x = src_x >> 16;
 696         src_y = src_y >> 16;
 697         src_w = src_w >> 16;
 698         src_h = src_h >> 16;
 699
 700         DBG("%s: FB[%u] %u,%u,%u,%u -> CRTC[%u] %d,%d,%u,%u", mdp5_plane->name,
 701                         fb->base.id, src_x, src_y, src_w, src_h,
 702                         crtc->base.id, crtc_x, crtc_y, crtc_w, crtc_h);
 703
 704         /* Request some memory from the SMP: */
 705         if (mdp5_kms->smp) {
 706                 ret = mdp5_smp_request(mdp5_kms->smp,
 707                                 mdp5_plane->pipe, format, src_w, false);
 708                 if (ret)
 709                         return ret;
 710         }
 711
 712         /*
 713          * Currently we update the hw for allocations/requests immediately,
 714          * but once atomic modeset/pageflip is in place, the allocation
 715          * would move into atomic->check_plane_state(), while updating the
 716          * hw would remain here:
 717          */
 718         if (mdp5_kms->smp)
 719                 mdp5_smp_configure(mdp5_kms->smp, pipe);
 720
 721         ret = calc_scalex_steps(plane, pix_format, src_w, crtc_w, phasex_step);
 722         if (ret)
 723                 return ret;
 724
 725         ret = calc_scaley_steps(plane, pix_format, src_h, crtc_h, phasey_step);
 726         if (ret)
 727                 return ret;
 728
 729         if (mdp5_plane->caps & MDP_PIPE_CAP_SW_PIX_EXT) {
 730                 calc_pixel_ext(format, src_w, crtc_w, phasex_step,
 731                                          pe_left, pe_right, true);
 732                 calc_pixel_ext(format, src_h, crtc_h, phasey_step,
 733                                         pe_top, pe_bottom, false);
 734         }
 735
 736         /* TODO calc hdecm, vdecm */
 737
 738         /* SCALE is used to both scale and up-sample chroma components */
 739         config |= get_scale_config(format, src_w, crtc_w, true);
 740         config |= get_scale_config(format, src_h, crtc_h, false);
 741         DBG("scale config = %x", config);
 742
 743         hflip = !!(pstate->rotation & DRM_REFLECT_X);
 744         vflip = !!(pstate->rotation & DRM_REFLECT_Y);
 745
 746         spin_lock_irqsave(&mdp5_plane->pipe_lock, flags);
 747
 748         mdp5_write(mdp5_kms, REG_MDP5_PIPE_SRC_IMG_SIZE(pipe),
 749                         MDP5_PIPE_SRC_IMG_SIZE_WIDTH(fb->width) |
 750                         MDP5_PIPE_SRC_IMG_SIZE_HEIGHT(fb->height));
 751
 752         mdp5_write(mdp5_kms, REG_MDP5_PIPE_SRC_SIZE(pipe),
 753                         MDP5_PIPE_SRC_SIZE_WIDTH(src_w) |
 754                         MDP5_PIPE_SRC_SIZE_HEIGHT(src_h));
 755
 756         mdp5_write(mdp5_kms, REG_MDP5_PIPE_SRC_XY(pipe),
 757                         MDP5_PIPE_SRC_XY_X(src_x) |
 758                         MDP5_PIPE_SRC_XY_Y(src_y));
 759
 760         mdp5_write(mdp5_kms, REG_MDP5_PIPE_OUT_SIZE(pipe),
 761                         MDP5_PIPE_OUT_SIZE_WIDTH(crtc_w) |
 762                         MDP5_PIPE_OUT_SIZE_HEIGHT(crtc_h));
 763
 764         mdp5_write(mdp5_kms, REG_MDP5_PIPE_OUT_XY(pipe),
 765                         MDP5_PIPE_OUT_XY_X(crtc_x) |
 766                         MDP5_PIPE_OUT_XY_Y(crtc_y));
 767
 768         mdp5_write(mdp5_kms, REG_MDP5_PIPE_SRC_FORMAT(pipe),
 769                         MDP5_PIPE_SRC_FORMAT_A_BPC(format->bpc_a) |
 770                         MDP5_PIPE_SRC_FORMAT_R_BPC(format->bpc_r) |
 771                         MDP5_PIPE_SRC_FORMAT_G_BPC(format->bpc_g) |
 772                         MDP5_PIPE_SRC_FORMAT_B_BPC(format->bpc_b) |
 773                         COND(format->alpha_enable, MDP5_PIPE_SRC_FORMAT_ALPHA_ENABLE) |
 774                         MDP5_PIPE_SRC_FORMAT_CPP(format->cpp - 1) |
 775                         MDP5_PIPE_SRC_FORMAT_UNPACK_COUNT(format->unpack_count - 1) |
 776                         COND(format->unpack_tight, MDP5_PIPE_SRC_FORMAT_UNPACK_TIGHT) |
 777                         MDP5_PIPE_SRC_FORMAT_FETCH_TYPE(format->fetch_type) |
 778                         MDP5_PIPE_SRC_FORMAT_CHROMA_SAMP(format->chroma_sample));
 779
 780         mdp5_write(mdp5_kms, REG_MDP5_PIPE_SRC_UNPACK(pipe),
 781                         MDP5_PIPE_SRC_UNPACK_ELEM0(format->unpack[0]) |
 782                         MDP5_PIPE_SRC_UNPACK_ELEM1(format->unpack[1]) |
 783                         MDP5_PIPE_SRC_UNPACK_ELEM2(format->unpack[2]) |
 784                         MDP5_PIPE_SRC_UNPACK_ELEM3(format->unpack[3]));
 785
 786         mdp5_write(mdp5_kms, REG_MDP5_PIPE_SRC_OP_MODE(pipe),
 787                         (hflip ? MDP5_PIPE_SRC_OP_MODE_FLIP_LR : 0) |
 788                         (vflip ? MDP5_PIPE_SRC_OP_MODE_FLIP_UD : 0) |
 789                         COND(pe, MDP5_PIPE_SRC_OP_MODE_SW_PIX_EXT_OVERRIDE) |
 790                         MDP5_PIPE_SRC_OP_MODE_BWC(BWC_LOSSLESS));
 791
 792         /* not using secure mode: */
 793         mdp5_write(mdp5_kms, REG_MDP5_PIPE_SRC_ADDR_SW_STATUS(pipe), 0);
 794
 795         if (mdp5_plane->caps & MDP_PIPE_CAP_SW_PIX_EXT)
 796                 mdp5_write_pixel_ext(mdp5_kms, pipe, format,
 797                                 src_w, pe_left, pe_right,
 798                                 src_h, pe_top, pe_bottom);
 799
 800         if (mdp5_plane->caps & MDP_PIPE_CAP_SCALE) {
 801                 mdp5_write(mdp5_kms, REG_MDP5_PIPE_SCALE_PHASE_STEP_X(pipe),
 802                                 phasex_step[COMP_0]);
 803                 mdp5_write(mdp5_kms, REG_MDP5_PIPE_SCALE_PHASE_STEP_Y(pipe),
 804                                 phasey_step[COMP_0]);
 805                 mdp5_write(mdp5_kms, REG_MDP5_PIPE_SCALE_CR_PHASE_STEP_X(pipe),
 806                                 phasex_step[COMP_1_2]);
 807                 mdp5_write(mdp5_kms, REG_MDP5_PIPE_SCALE_CR_PHASE_STEP_Y(pipe),
 808                                 phasey_step[COMP_1_2]);
 809                 mdp5_write(mdp5_kms, REG_MDP5_PIPE_DECIMATION(pipe),
 810                                 MDP5_PIPE_DECIMATION_VERT(vdecm) |
 811                                 MDP5_PIPE_DECIMATION_HORZ(hdecm));
 812                 mdp5_write(mdp5_kms, REG_MDP5_PIPE_SCALE_CONFIG(pipe), config);
 813         }
 814
 815         if (mdp5_plane->caps & MDP_PIPE_CAP_CSC) {
 816                 if (MDP_FORMAT_IS_YUV(format))
 817                         csc_enable(mdp5_kms, pipe,
 818                                         mdp_get_default_csc_cfg(CSC_YUV2RGB));
 819                 else
 820                         csc_disable(mdp5_kms, pipe);
 821         }
 822
 823         set_scanout_locked(plane, fb);
 824
 825         spin_unlock_irqrestore(&mdp5_plane->pipe_lock, flags);
 826
 827         return ret;
 828 }
 829
 830 void mdp5_plane_complete_flip(struct drm_plane *plane)
 831 {
 832         struct mdp5_kms *mdp5_kms = get_kms(plane);
 833         struct mdp5_plane *mdp5_plane = to_mdp5_plane(plane);
 834         enum mdp5_pipe pipe = mdp5_plane->pipe;
 835
 836         DBG("%s: complete flip", mdp5_plane->name);
 837
 838         if (mdp5_kms->smp)
 839                 mdp5_smp_commit(mdp5_kms->smp, pipe);
 840
 841         to_mdp5_plane_state(plane->state)->pending = false;
 842 }
 843
 844 enum mdp5_pipe mdp5_plane_pipe(struct drm_plane *plane)
 845 {
 846         struct mdp5_plane *mdp5_plane = to_mdp5_plane(plane);
 847         return mdp5_plane->pipe;
 848 }
 849
 850 uint32_t mdp5_plane_get_flush(struct drm_plane *plane)
 851 {
 852         struct mdp5_plane *mdp5_plane = to_mdp5_plane(plane);
 853
 854         return mdp5_plane->flush_mask;
 855 }
 856
 857 /* called after vsync in thread context */
 858 void mdp5_plane_complete_commit(struct drm_plane *plane,
 859         struct drm_plane_state *state)
 860 {
 861         struct mdp5_kms *mdp5_kms = get_kms(plane);
 862         struct mdp5_plane *mdp5_plane = to_mdp5_plane(plane);
 863         enum mdp5_pipe pipe = mdp5_plane->pipe;
 864
 865         if (!plane_enabled(plane->state) && mdp5_kms->smp) {
 866                 DBG("%s: free SMP", mdp5_plane->name);
 867                 mdp5_smp_release(mdp5_kms->smp, pipe);
 868         }
 869 }
 870
 871 /* initialize plane */
 872 struct drm_plane *mdp5_plane_init(struct drm_device *dev,
 873                 enum mdp5_pipe pipe, bool private_plane, uint32_t reg_offset,
 874                 uint32_t caps)
 875 {
 876         struct drm_plane *plane = NULL;
 877         struct mdp5_plane *mdp5_plane;
 878         int ret;
 879         enum drm_plane_type type;
 880
 881         mdp5_plane = kzalloc(sizeof(*mdp5_plane), GFP_KERNEL);
 882         if (!mdp5_plane) {
 883                 ret = -ENOMEM;
 884                 goto fail;
 885         }
 886
 887         plane = &mdp5_plane->base;
 888
 889         mdp5_plane->pipe = pipe;
 890         mdp5_plane->name = pipe2name(pipe);
 891         mdp5_plane->caps = caps;
 892
 893         mdp5_plane->nformats = mdp_get_formats(mdp5_plane->formats,
 894                 ARRAY_SIZE(mdp5_plane->formats),
 895                 !pipe_supports_yuv(mdp5_plane->caps));
 896
 897         mdp5_plane->flush_mask = mdp_ctl_flush_mask_pipe(pipe);
 898         mdp5_plane->reg_offset = reg_offset;
 899         spin_lock_init(&mdp5_plane->pipe_lock);
 900
 901         type = private_plane ? DRM_PLANE_TYPE_PRIMARY : DRM_PLANE_TYPE_OVERLAY;
 902         ret = drm_universal_plane_init(dev, plane, 0xff, &mdp5_plane_funcs,
 903                                  mdp5_plane->formats, mdp5_plane->nformats,
 904                                  type, NULL);
 905         if (ret)
 906                 goto fail;
 907
 908         drm_plane_helper_add(plane, &mdp5_plane_helper_funcs);
 909
 910         mdp5_plane_install_properties(plane, &plane->base);
 911
 912         return plane;
 913
 914 fail:
 915         if (plane)
 916                 mdp5_plane_destroy(plane);
 917
 918         return ERR_PTR(ret);
 919 }