linux/drivers/gpu/drm/msm/mdp/mdp5/mdp5_plane.c
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   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
  21struct 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
  38static 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
  45static void set_scanout_locked(struct drm_plane *plane,
  46                struct drm_framebuffer *fb);
  47
  48static 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
  54static bool plane_enabled(struct drm_plane_state *state)
  55{
  56        return state->fb && state->crtc;
  57}
  58
  59static 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
  69static 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 */
  90static 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
 131static 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;
 154done:
 155        return ret;
 156#undef SET_PROPERTY
 157}
 158
 159static 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;
 182done:
 183        return ret;
 184#undef SET_PROPERTY
 185}
 186
 187static 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
 211static struct drm_plane_state *
 212mdp5_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
 231static 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
 240static 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
 252static 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
 266static 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
 280static 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
 348static 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
 377static 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
 384static 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 */
 412static 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 */
 421static 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
 476static 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
 498static 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
 523static 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
 548static 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
 579static 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
 601static 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
 662static 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
 830void 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
 844enum 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
 850uint32_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 */
 858void 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 */
 872struct 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
 914fail:
 915        if (plane)
 916                mdp5_plane_destroy(plane);
 917
 918        return ERR_PTR(ret);
 919}
 920