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                        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 */
  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                const 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                const 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                        dev_err(plane->dev->dev,
 296                                "Pipe doesn't support YUV\n");
 297
 298                        return -EINVAL;
 299                }
 300
 301                if (!(mdp5_plane->caps & MDP_PIPE_CAP_SCALE) &&
 302                        (((state->src_w >> 16) != state->crtc_w) ||
 303                        ((state->src_h >> 16) != state->crtc_h))) {
 304                        dev_err(plane->dev->dev,
 305                                "Pipe doesn't support scaling (%dx%d -> %dx%d)\n",
 306                                state->src_w >> 16, state->src_h >> 16,
 307                                state->crtc_w, state->crtc_h);
 308
 309                        return -EINVAL;
 310                }
 311
 312                hflip = !!(state->rotation & BIT(DRM_REFLECT_X));
 313                vflip = !!(state->rotation & BIT(DRM_REFLECT_Y));
 314                if ((vflip && !(mdp5_plane->caps & MDP_PIPE_CAP_VFLIP)) ||
 315                        (hflip && !(mdp5_plane->caps & MDP_PIPE_CAP_HFLIP))) {
 316                        dev_err(plane->dev->dev,
 317                                "Pipe doesn't support flip\n");
 318
 319                        return -EINVAL;
 320                }
 321        }
 322
 323        if (plane_enabled(state) && plane_enabled(old_state)) {
 324                /* we cannot change SMP block configuration during scanout: */
 325                bool full_modeset = false;
 326                if (state->fb->pixel_format != old_state->fb->pixel_format) {
 327                        DBG("%s: pixel_format change!", mdp5_plane->name);
 328                        full_modeset = true;
 329                }
 330                if (state->src_w != old_state->src_w) {
 331                        DBG("%s: src_w change!", mdp5_plane->name);
 332                        full_modeset = true;
 333                }
 334                if (to_mdp5_plane_state(old_state)->pending) {
 335                        DBG("%s: still pending!", mdp5_plane->name);
 336                        full_modeset = true;
 337                }
 338                if (full_modeset) {
 339                        struct drm_crtc_state *crtc_state =
 340                                        drm_atomic_get_crtc_state(state->state, state->crtc);
 341                        crtc_state->mode_changed = true;
 342                        to_mdp5_plane_state(state)->mode_changed = true;
 343                }
 344        } else {
 345                to_mdp5_plane_state(state)->mode_changed = true;
 346        }
 347
 348        return 0;
 349}
 350
 351static void mdp5_plane_atomic_update(struct drm_plane *plane,
 352                                     struct drm_plane_state *old_state)
 353{
 354        struct mdp5_plane *mdp5_plane = to_mdp5_plane(plane);
 355        struct drm_plane_state *state = plane->state;
 356
 357        DBG("%s: update", mdp5_plane->name);
 358
 359        if (!plane_enabled(state)) {
 360                to_mdp5_plane_state(state)->pending = true;
 361        } else if (to_mdp5_plane_state(state)->mode_changed) {
 362                int ret;
 363                to_mdp5_plane_state(state)->pending = true;
 364                ret = mdp5_plane_mode_set(plane,
 365                                state->crtc, state->fb,
 366                                state->crtc_x, state->crtc_y,
 367                                state->crtc_w, state->crtc_h,
 368                                state->src_x,  state->src_y,
 369                                state->src_w, state->src_h);
 370                /* atomic_check should have ensured that this doesn't fail */
 371                WARN_ON(ret < 0);
 372        } else {
 373                unsigned long flags;
 374                spin_lock_irqsave(&mdp5_plane->pipe_lock, flags);
 375                set_scanout_locked(plane, state->fb);
 376                spin_unlock_irqrestore(&mdp5_plane->pipe_lock, flags);
 377        }
 378}
 379
 380static const struct drm_plane_helper_funcs mdp5_plane_helper_funcs = {
 381                .prepare_fb = mdp5_plane_prepare_fb,
 382                .cleanup_fb = mdp5_plane_cleanup_fb,
 383                .atomic_check = mdp5_plane_atomic_check,
 384                .atomic_update = mdp5_plane_atomic_update,
 385};
 386
 387static void set_scanout_locked(struct drm_plane *plane,
 388                struct drm_framebuffer *fb)
 389{
 390        struct mdp5_plane *mdp5_plane = to_mdp5_plane(plane);
 391        struct mdp5_kms *mdp5_kms = get_kms(plane);
 392        enum mdp5_pipe pipe = mdp5_plane->pipe;
 393
 394        mdp5_write(mdp5_kms, REG_MDP5_PIPE_SRC_STRIDE_A(pipe),
 395                        MDP5_PIPE_SRC_STRIDE_A_P0(fb->pitches[0]) |
 396                        MDP5_PIPE_SRC_STRIDE_A_P1(fb->pitches[1]));
 397
 398        mdp5_write(mdp5_kms, REG_MDP5_PIPE_SRC_STRIDE_B(pipe),
 399                        MDP5_PIPE_SRC_STRIDE_B_P2(fb->pitches[2]) |
 400                        MDP5_PIPE_SRC_STRIDE_B_P3(fb->pitches[3]));
 401
 402        mdp5_write(mdp5_kms, REG_MDP5_PIPE_SRC0_ADDR(pipe),
 403                        msm_framebuffer_iova(fb, mdp5_kms->id, 0));
 404        mdp5_write(mdp5_kms, REG_MDP5_PIPE_SRC1_ADDR(pipe),
 405                        msm_framebuffer_iova(fb, mdp5_kms->id, 1));
 406        mdp5_write(mdp5_kms, REG_MDP5_PIPE_SRC2_ADDR(pipe),
 407                        msm_framebuffer_iova(fb, mdp5_kms->id, 2));
 408        mdp5_write(mdp5_kms, REG_MDP5_PIPE_SRC3_ADDR(pipe),
 409                        msm_framebuffer_iova(fb, mdp5_kms->id, 3));
 410
 411        plane->fb = fb;
 412}
 413
 414/* Note: mdp5_plane->pipe_lock must be locked */
 415static void csc_disable(struct mdp5_kms *mdp5_kms, enum mdp5_pipe pipe)
 416{
 417        uint32_t value = mdp5_read(mdp5_kms, REG_MDP5_PIPE_OP_MODE(pipe)) &
 418                         ~MDP5_PIPE_OP_MODE_CSC_1_EN;
 419
 420        mdp5_write(mdp5_kms, REG_MDP5_PIPE_OP_MODE(pipe), value);
 421}
 422
 423/* Note: mdp5_plane->pipe_lock must be locked */
 424static void csc_enable(struct mdp5_kms *mdp5_kms, enum mdp5_pipe pipe,
 425                struct csc_cfg *csc)
 426{
 427        uint32_t  i, mode = 0; /* RGB, no CSC */
 428        uint32_t *matrix;
 429
 430        if (unlikely(!csc))
 431                return;
 432
 433        if ((csc->type == CSC_YUV2RGB) || (CSC_YUV2YUV == csc->type))
 434                mode |= MDP5_PIPE_OP_MODE_CSC_SRC_DATA_FORMAT(DATA_FORMAT_YUV);
 435        if ((csc->type == CSC_RGB2YUV) || (CSC_YUV2YUV == csc->type))
 436                mode |= MDP5_PIPE_OP_MODE_CSC_DST_DATA_FORMAT(DATA_FORMAT_YUV);
 437        mode |= MDP5_PIPE_OP_MODE_CSC_1_EN;
 438        mdp5_write(mdp5_kms, REG_MDP5_PIPE_OP_MODE(pipe), mode);
 439
 440        matrix = csc->matrix;
 441        mdp5_write(mdp5_kms, REG_MDP5_PIPE_CSC_1_MATRIX_COEFF_0(pipe),
 442                        MDP5_PIPE_CSC_1_MATRIX_COEFF_0_COEFF_11(matrix[0]) |
 443                        MDP5_PIPE_CSC_1_MATRIX_COEFF_0_COEFF_12(matrix[1]));
 444        mdp5_write(mdp5_kms, REG_MDP5_PIPE_CSC_1_MATRIX_COEFF_1(pipe),
 445                        MDP5_PIPE_CSC_1_MATRIX_COEFF_1_COEFF_13(matrix[2]) |
 446                        MDP5_PIPE_CSC_1_MATRIX_COEFF_1_COEFF_21(matrix[3]));
 447        mdp5_write(mdp5_kms, REG_MDP5_PIPE_CSC_1_MATRIX_COEFF_2(pipe),
 448                        MDP5_PIPE_CSC_1_MATRIX_COEFF_2_COEFF_22(matrix[4]) |
 449                        MDP5_PIPE_CSC_1_MATRIX_COEFF_2_COEFF_23(matrix[5]));
 450        mdp5_write(mdp5_kms, REG_MDP5_PIPE_CSC_1_MATRIX_COEFF_3(pipe),
 451                        MDP5_PIPE_CSC_1_MATRIX_COEFF_3_COEFF_31(matrix[6]) |
 452                        MDP5_PIPE_CSC_1_MATRIX_COEFF_3_COEFF_32(matrix[7]));
 453        mdp5_write(mdp5_kms, REG_MDP5_PIPE_CSC_1_MATRIX_COEFF_4(pipe),
 454                        MDP5_PIPE_CSC_1_MATRIX_COEFF_4_COEFF_33(matrix[8]));
 455
 456        for (i = 0; i < ARRAY_SIZE(csc->pre_bias); i++) {
 457                uint32_t *pre_clamp = csc->pre_clamp;
 458                uint32_t *post_clamp = csc->post_clamp;
 459
 460                mdp5_write(mdp5_kms, REG_MDP5_PIPE_CSC_1_PRE_CLAMP(pipe, i),
 461                        MDP5_PIPE_CSC_1_PRE_CLAMP_REG_HIGH(pre_clamp[2*i+1]) |
 462                        MDP5_PIPE_CSC_1_PRE_CLAMP_REG_LOW(pre_clamp[2*i]));
 463
 464                mdp5_write(mdp5_kms, REG_MDP5_PIPE_CSC_1_POST_CLAMP(pipe, i),
 465                        MDP5_PIPE_CSC_1_POST_CLAMP_REG_HIGH(post_clamp[2*i+1]) |
 466                        MDP5_PIPE_CSC_1_POST_CLAMP_REG_LOW(post_clamp[2*i]));
 467
 468                mdp5_write(mdp5_kms, REG_MDP5_PIPE_CSC_1_PRE_BIAS(pipe, i),
 469                        MDP5_PIPE_CSC_1_PRE_BIAS_REG_VALUE(csc->pre_bias[i]));
 470
 471                mdp5_write(mdp5_kms, REG_MDP5_PIPE_CSC_1_POST_BIAS(pipe, i),
 472                        MDP5_PIPE_CSC_1_POST_BIAS_REG_VALUE(csc->post_bias[i]));
 473        }
 474}
 475
 476#define PHASE_STEP_SHIFT        21
 477#define DOWN_SCALE_RATIO_MAX    32      /* 2^(26-21) */
 478
 479static int calc_phase_step(uint32_t src, uint32_t dst, uint32_t *out_phase)
 480{
 481        uint32_t unit;
 482
 483        if (src == 0 || dst == 0)
 484                return -EINVAL;
 485
 486        /*
 487         * PHASE_STEP_X/Y is coded on 26 bits (25:0),
 488         * where 2^21 represents the unity "1" in fixed-point hardware design.
 489         * This leaves 5 bits for the integer part (downscale case):
 490         *      -> maximum downscale ratio = 0b1_1111 = 31
 491         */
 492        if (src > (dst * DOWN_SCALE_RATIO_MAX))
 493                return -EOVERFLOW;
 494
 495        unit = 1 << PHASE_STEP_SHIFT;
 496        *out_phase = mult_frac(unit, src, dst);
 497
 498        return 0;
 499}
 500
 501static int calc_scalex_steps(struct drm_plane *plane,
 502                uint32_t pixel_format, uint32_t src, uint32_t dest,
 503                uint32_t phasex_steps[COMP_MAX])
 504{
 505        struct mdp5_kms *mdp5_kms = get_kms(plane);
 506        struct device *dev = mdp5_kms->dev->dev;
 507        uint32_t phasex_step;
 508        unsigned int hsub;
 509        int ret;
 510
 511        ret = calc_phase_step(src, dest, &phasex_step);
 512        if (ret) {
 513                dev_err(dev, "X scaling (%d->%d) failed: %d\n", src, dest, ret);
 514                return ret;
 515        }
 516
 517        hsub = drm_format_horz_chroma_subsampling(pixel_format);
 518
 519        phasex_steps[COMP_0]   = phasex_step;
 520        phasex_steps[COMP_3]   = phasex_step;
 521        phasex_steps[COMP_1_2] = phasex_step / hsub;
 522
 523        return 0;
 524}
 525
 526static int calc_scaley_steps(struct drm_plane *plane,
 527                uint32_t pixel_format, uint32_t src, uint32_t dest,
 528                uint32_t phasey_steps[COMP_MAX])
 529{
 530        struct mdp5_kms *mdp5_kms = get_kms(plane);
 531        struct device *dev = mdp5_kms->dev->dev;
 532        uint32_t phasey_step;
 533        unsigned int vsub;
 534        int ret;
 535
 536        ret = calc_phase_step(src, dest, &phasey_step);
 537        if (ret) {
 538                dev_err(dev, "Y scaling (%d->%d) failed: %d\n", src, dest, ret);
 539                return ret;
 540        }
 541
 542        vsub = drm_format_vert_chroma_subsampling(pixel_format);
 543
 544        phasey_steps[COMP_0]   = phasey_step;
 545        phasey_steps[COMP_3]   = phasey_step;
 546        phasey_steps[COMP_1_2] = phasey_step / vsub;
 547
 548        return 0;
 549}
 550
 551static uint32_t get_scale_config(const struct mdp_format *format,
 552                uint32_t src, uint32_t dst, bool horz)
 553{
 554        bool scaling = format->is_yuv ? true : (src != dst);
 555        uint32_t sub, pix_fmt = format->base.pixel_format;
 556        uint32_t ya_filter, uv_filter;
 557        bool yuv = format->is_yuv;
 558
 559        if (!scaling)
 560                return 0;
 561
 562        if (yuv) {
 563                sub = horz ? drm_format_horz_chroma_subsampling(pix_fmt) :
 564                             drm_format_vert_chroma_subsampling(pix_fmt);
 565                uv_filter = ((src / sub) <= dst) ?
 566                                   SCALE_FILTER_BIL : SCALE_FILTER_PCMN;
 567        }
 568        ya_filter = (src <= dst) ? SCALE_FILTER_BIL : SCALE_FILTER_PCMN;
 569
 570        if (horz)
 571                return  MDP5_PIPE_SCALE_CONFIG_SCALEX_EN |
 572                        MDP5_PIPE_SCALE_CONFIG_SCALEX_FILTER_COMP_0(ya_filter) |
 573                        MDP5_PIPE_SCALE_CONFIG_SCALEX_FILTER_COMP_3(ya_filter) |
 574                        COND(yuv, MDP5_PIPE_SCALE_CONFIG_SCALEX_FILTER_COMP_1_2(uv_filter));
 575        else
 576                return  MDP5_PIPE_SCALE_CONFIG_SCALEY_EN |
 577                        MDP5_PIPE_SCALE_CONFIG_SCALEY_FILTER_COMP_0(ya_filter) |
 578                        MDP5_PIPE_SCALE_CONFIG_SCALEY_FILTER_COMP_3(ya_filter) |
 579                        COND(yuv, MDP5_PIPE_SCALE_CONFIG_SCALEY_FILTER_COMP_1_2(uv_filter));
 580}
 581
 582static void calc_pixel_ext(const struct mdp_format *format,
 583                uint32_t src, uint32_t dst, uint32_t phase_step[2],
 584                int pix_ext_edge1[COMP_MAX], int pix_ext_edge2[COMP_MAX],
 585                bool horz)
 586{
 587        bool scaling = format->is_yuv ? true : (src != dst);
 588        int i;
 589
 590        /*
 591         * Note:
 592         * We assume here that:
 593         *     1. PCMN filter is used for downscale
 594         *     2. bilinear filter is used for upscale
 595         *     3. we are in a single pipe configuration
 596         */
 597
 598        for (i = 0; i < COMP_MAX; i++) {
 599                pix_ext_edge1[i] = 0;
 600                pix_ext_edge2[i] = scaling ? 1 : 0;
 601        }
 602}
 603
 604static void mdp5_write_pixel_ext(struct mdp5_kms *mdp5_kms, enum mdp5_pipe pipe,
 605        const struct mdp_format *format,
 606        uint32_t src_w, int pe_left[COMP_MAX], int pe_right[COMP_MAX],
 607        uint32_t src_h, int pe_top[COMP_MAX], int pe_bottom[COMP_MAX])
 608{
 609        uint32_t pix_fmt = format->base.pixel_format;
 610        uint32_t lr, tb, req;
 611        int i;
 612
 613        for (i = 0; i < COMP_MAX; i++) {
 614                uint32_t roi_w = src_w;
 615                uint32_t roi_h = src_h;
 616
 617                if (format->is_yuv && i == COMP_1_2) {
 618                        roi_w /= drm_format_horz_chroma_subsampling(pix_fmt);
 619                        roi_h /= drm_format_vert_chroma_subsampling(pix_fmt);
 620                }
 621
 622                lr  = (pe_left[i] >= 0) ?
 623                        MDP5_PIPE_SW_PIX_EXT_LR_LEFT_RPT(pe_left[i]) :
 624                        MDP5_PIPE_SW_PIX_EXT_LR_LEFT_OVF(pe_left[i]);
 625
 626                lr |= (pe_right[i] >= 0) ?
 627                        MDP5_PIPE_SW_PIX_EXT_LR_RIGHT_RPT(pe_right[i]) :
 628                        MDP5_PIPE_SW_PIX_EXT_LR_RIGHT_OVF(pe_right[i]);
 629
 630                tb  = (pe_top[i] >= 0) ?
 631                        MDP5_PIPE_SW_PIX_EXT_TB_TOP_RPT(pe_top[i]) :
 632                        MDP5_PIPE_SW_PIX_EXT_TB_TOP_OVF(pe_top[i]);
 633
 634                tb |= (pe_bottom[i] >= 0) ?
 635                        MDP5_PIPE_SW_PIX_EXT_TB_BOTTOM_RPT(pe_bottom[i]) :
 636                        MDP5_PIPE_SW_PIX_EXT_TB_BOTTOM_OVF(pe_bottom[i]);
 637
 638                req  = MDP5_PIPE_SW_PIX_EXT_REQ_PIXELS_LEFT_RIGHT(roi_w +
 639                                pe_left[i] + pe_right[i]);
 640
 641                req |= MDP5_PIPE_SW_PIX_EXT_REQ_PIXELS_TOP_BOTTOM(roi_h +
 642                                pe_top[i] + pe_bottom[i]);
 643
 644                mdp5_write(mdp5_kms, REG_MDP5_PIPE_SW_PIX_EXT_LR(pipe, i), lr);
 645                mdp5_write(mdp5_kms, REG_MDP5_PIPE_SW_PIX_EXT_TB(pipe, i), tb);
 646                mdp5_write(mdp5_kms, REG_MDP5_PIPE_SW_PIX_EXT_REQ_PIXELS(pipe, i), req);
 647
 648                DBG("comp-%d (L/R): rpt=%d/%d, ovf=%d/%d, req=%d", i,
 649                        FIELD(lr,  MDP5_PIPE_SW_PIX_EXT_LR_LEFT_RPT),
 650                        FIELD(lr,  MDP5_PIPE_SW_PIX_EXT_LR_RIGHT_RPT),
 651                        FIELD(lr,  MDP5_PIPE_SW_PIX_EXT_LR_LEFT_OVF),
 652                        FIELD(lr,  MDP5_PIPE_SW_PIX_EXT_LR_RIGHT_OVF),
 653                        FIELD(req, MDP5_PIPE_SW_PIX_EXT_REQ_PIXELS_LEFT_RIGHT));
 654
 655                DBG("comp-%d (T/B): rpt=%d/%d, ovf=%d/%d, req=%d", i,
 656                        FIELD(tb,  MDP5_PIPE_SW_PIX_EXT_TB_TOP_RPT),
 657                        FIELD(tb,  MDP5_PIPE_SW_PIX_EXT_TB_BOTTOM_RPT),
 658                        FIELD(tb,  MDP5_PIPE_SW_PIX_EXT_TB_TOP_OVF),
 659                        FIELD(tb,  MDP5_PIPE_SW_PIX_EXT_TB_BOTTOM_OVF),
 660                        FIELD(req, MDP5_PIPE_SW_PIX_EXT_REQ_PIXELS_TOP_BOTTOM));
 661        }
 662}
 663
 664
 665static int mdp5_plane_mode_set(struct drm_plane *plane,
 666                struct drm_crtc *crtc, struct drm_framebuffer *fb,
 667                int crtc_x, int crtc_y,
 668                unsigned int crtc_w, unsigned int crtc_h,
 669                uint32_t src_x, uint32_t src_y,
 670                uint32_t src_w, uint32_t src_h)
 671{
 672        struct mdp5_plane *mdp5_plane = to_mdp5_plane(plane);
 673        struct drm_plane_state *pstate = plane->state;
 674        struct mdp5_kms *mdp5_kms = get_kms(plane);
 675        enum mdp5_pipe pipe = mdp5_plane->pipe;
 676        const struct mdp_format *format;
 677        uint32_t nplanes, config = 0;
 678        uint32_t phasex_step[COMP_MAX] = {0,}, phasey_step[COMP_MAX] = {0,};
 679        bool pe = mdp5_plane->caps & MDP_PIPE_CAP_SW_PIX_EXT;
 680        int pe_left[COMP_MAX], pe_right[COMP_MAX];
 681        int pe_top[COMP_MAX], pe_bottom[COMP_MAX];
 682        uint32_t hdecm = 0, vdecm = 0;
 683        uint32_t pix_format;
 684        bool vflip, hflip;
 685        unsigned long flags;
 686        int ret;
 687
 688        nplanes = drm_format_num_planes(fb->pixel_format);
 689
 690        /* bad formats should already be rejected: */
 691        if (WARN_ON(nplanes > pipe2nclients(pipe)))
 692                return -EINVAL;
 693
 694        format = to_mdp_format(msm_framebuffer_format(fb));
 695        pix_format = format->base.pixel_format;
 696
 697        /* src values are in Q16 fixed point, convert to integer: */
 698        src_x = src_x >> 16;
 699        src_y = src_y >> 16;
 700        src_w = src_w >> 16;
 701        src_h = src_h >> 16;
 702
 703        DBG("%s: FB[%u] %u,%u,%u,%u -> CRTC[%u] %d,%d,%u,%u", mdp5_plane->name,
 704                        fb->base.id, src_x, src_y, src_w, src_h,
 705                        crtc->base.id, crtc_x, crtc_y, crtc_w, crtc_h);
 706
 707        /* Request some memory from the SMP: */
 708        if (mdp5_kms->smp) {
 709                ret = mdp5_smp_request(mdp5_kms->smp,
 710                                mdp5_plane->pipe, format, src_w, false);
 711                if (ret)
 712                        return ret;
 713        }
 714
 715        /*
 716         * Currently we update the hw for allocations/requests immediately,
 717         * but once atomic modeset/pageflip is in place, the allocation
 718         * would move into atomic->check_plane_state(), while updating the
 719         * hw would remain here:
 720         */
 721        if (mdp5_kms->smp)
 722                mdp5_smp_configure(mdp5_kms->smp, pipe);
 723
 724        ret = calc_scalex_steps(plane, pix_format, src_w, crtc_w, phasex_step);
 725        if (ret)
 726                return ret;
 727
 728        ret = calc_scaley_steps(plane, pix_format, src_h, crtc_h, phasey_step);
 729        if (ret)
 730                return ret;
 731
 732        if (mdp5_plane->caps & MDP_PIPE_CAP_SW_PIX_EXT) {
 733                calc_pixel_ext(format, src_w, crtc_w, phasex_step,
 734                                         pe_left, pe_right, true);
 735                calc_pixel_ext(format, src_h, crtc_h, phasey_step,
 736                                        pe_top, pe_bottom, false);
 737        }
 738
 739        /* TODO calc hdecm, vdecm */
 740
 741        /* SCALE is used to both scale and up-sample chroma components */
 742        config |= get_scale_config(format, src_w, crtc_w, true);
 743        config |= get_scale_config(format, src_h, crtc_h, false);
 744        DBG("scale config = %x", config);
 745
 746        hflip = !!(pstate->rotation & BIT(DRM_REFLECT_X));
 747        vflip = !!(pstate->rotation & BIT(DRM_REFLECT_Y));
 748
 749        spin_lock_irqsave(&mdp5_plane->pipe_lock, flags);
 750
 751        mdp5_write(mdp5_kms, REG_MDP5_PIPE_SRC_IMG_SIZE(pipe),
 752                        MDP5_PIPE_SRC_IMG_SIZE_WIDTH(fb->width) |
 753                        MDP5_PIPE_SRC_IMG_SIZE_HEIGHT(fb->height));
 754
 755        mdp5_write(mdp5_kms, REG_MDP5_PIPE_SRC_SIZE(pipe),
 756                        MDP5_PIPE_SRC_SIZE_WIDTH(src_w) |
 757                        MDP5_PIPE_SRC_SIZE_HEIGHT(src_h));
 758
 759        mdp5_write(mdp5_kms, REG_MDP5_PIPE_SRC_XY(pipe),
 760                        MDP5_PIPE_SRC_XY_X(src_x) |
 761                        MDP5_PIPE_SRC_XY_Y(src_y));
 762
 763        mdp5_write(mdp5_kms, REG_MDP5_PIPE_OUT_SIZE(pipe),
 764                        MDP5_PIPE_OUT_SIZE_WIDTH(crtc_w) |
 765                        MDP5_PIPE_OUT_SIZE_HEIGHT(crtc_h));
 766
 767        mdp5_write(mdp5_kms, REG_MDP5_PIPE_OUT_XY(pipe),
 768                        MDP5_PIPE_OUT_XY_X(crtc_x) |
 769                        MDP5_PIPE_OUT_XY_Y(crtc_y));
 770
 771        mdp5_write(mdp5_kms, REG_MDP5_PIPE_SRC_FORMAT(pipe),
 772                        MDP5_PIPE_SRC_FORMAT_A_BPC(format->bpc_a) |
 773                        MDP5_PIPE_SRC_FORMAT_R_BPC(format->bpc_r) |
 774                        MDP5_PIPE_SRC_FORMAT_G_BPC(format->bpc_g) |
 775                        MDP5_PIPE_SRC_FORMAT_B_BPC(format->bpc_b) |
 776                        COND(format->alpha_enable, MDP5_PIPE_SRC_FORMAT_ALPHA_ENABLE) |
 777                        MDP5_PIPE_SRC_FORMAT_CPP(format->cpp - 1) |
 778                        MDP5_PIPE_SRC_FORMAT_UNPACK_COUNT(format->unpack_count - 1) |
 779                        COND(format->unpack_tight, MDP5_PIPE_SRC_FORMAT_UNPACK_TIGHT) |
 780                        MDP5_PIPE_SRC_FORMAT_FETCH_TYPE(format->fetch_type) |
 781                        MDP5_PIPE_SRC_FORMAT_CHROMA_SAMP(format->chroma_sample));
 782
 783        mdp5_write(mdp5_kms, REG_MDP5_PIPE_SRC_UNPACK(pipe),
 784                        MDP5_PIPE_SRC_UNPACK_ELEM0(format->unpack[0]) |
 785                        MDP5_PIPE_SRC_UNPACK_ELEM1(format->unpack[1]) |
 786                        MDP5_PIPE_SRC_UNPACK_ELEM2(format->unpack[2]) |
 787                        MDP5_PIPE_SRC_UNPACK_ELEM3(format->unpack[3]));
 788
 789        mdp5_write(mdp5_kms, REG_MDP5_PIPE_SRC_OP_MODE(pipe),
 790                        (hflip ? MDP5_PIPE_SRC_OP_MODE_FLIP_LR : 0) |
 791                        (vflip ? MDP5_PIPE_SRC_OP_MODE_FLIP_UD : 0) |
 792                        COND(pe, MDP5_PIPE_SRC_OP_MODE_SW_PIX_EXT_OVERRIDE) |
 793                        MDP5_PIPE_SRC_OP_MODE_BWC(BWC_LOSSLESS));
 794
 795        /* not using secure mode: */
 796        mdp5_write(mdp5_kms, REG_MDP5_PIPE_SRC_ADDR_SW_STATUS(pipe), 0);
 797
 798        if (mdp5_plane->caps & MDP_PIPE_CAP_SW_PIX_EXT)
 799                mdp5_write_pixel_ext(mdp5_kms, pipe, format,
 800                                src_w, pe_left, pe_right,
 801                                src_h, pe_top, pe_bottom);
 802
 803        if (mdp5_plane->caps & MDP_PIPE_CAP_SCALE) {
 804                mdp5_write(mdp5_kms, REG_MDP5_PIPE_SCALE_PHASE_STEP_X(pipe),
 805                                phasex_step[COMP_0]);
 806                mdp5_write(mdp5_kms, REG_MDP5_PIPE_SCALE_PHASE_STEP_Y(pipe),
 807                                phasey_step[COMP_0]);
 808                mdp5_write(mdp5_kms, REG_MDP5_PIPE_SCALE_CR_PHASE_STEP_X(pipe),
 809                                phasex_step[COMP_1_2]);
 810                mdp5_write(mdp5_kms, REG_MDP5_PIPE_SCALE_CR_PHASE_STEP_Y(pipe),
 811                                phasey_step[COMP_1_2]);
 812                mdp5_write(mdp5_kms, REG_MDP5_PIPE_DECIMATION(pipe),
 813                                MDP5_PIPE_DECIMATION_VERT(vdecm) |
 814                                MDP5_PIPE_DECIMATION_HORZ(hdecm));
 815                mdp5_write(mdp5_kms, REG_MDP5_PIPE_SCALE_CONFIG(pipe), config);
 816        }
 817
 818        if (mdp5_plane->caps & MDP_PIPE_CAP_CSC) {
 819                if (MDP_FORMAT_IS_YUV(format))
 820                        csc_enable(mdp5_kms, pipe,
 821                                        mdp_get_default_csc_cfg(CSC_YUV2RGB));
 822                else
 823                        csc_disable(mdp5_kms, pipe);
 824        }
 825
 826        set_scanout_locked(plane, fb);
 827
 828        spin_unlock_irqrestore(&mdp5_plane->pipe_lock, flags);
 829
 830        return ret;
 831}
 832
 833void mdp5_plane_complete_flip(struct drm_plane *plane)
 834{
 835        struct mdp5_kms *mdp5_kms = get_kms(plane);
 836        struct mdp5_plane *mdp5_plane = to_mdp5_plane(plane);
 837        enum mdp5_pipe pipe = mdp5_plane->pipe;
 838
 839        DBG("%s: complete flip", mdp5_plane->name);
 840
 841        if (mdp5_kms->smp)
 842                mdp5_smp_commit(mdp5_kms->smp, pipe);
 843
 844        to_mdp5_plane_state(plane->state)->pending = false;
 845}
 846
 847enum mdp5_pipe mdp5_plane_pipe(struct drm_plane *plane)
 848{
 849        struct mdp5_plane *mdp5_plane = to_mdp5_plane(plane);
 850        return mdp5_plane->pipe;
 851}
 852
 853uint32_t mdp5_plane_get_flush(struct drm_plane *plane)
 854{
 855        struct mdp5_plane *mdp5_plane = to_mdp5_plane(plane);
 856
 857        return mdp5_plane->flush_mask;
 858}
 859
 860/* called after vsync in thread context */
 861void mdp5_plane_complete_commit(struct drm_plane *plane,
 862        struct drm_plane_state *state)
 863{
 864        struct mdp5_kms *mdp5_kms = get_kms(plane);
 865        struct mdp5_plane *mdp5_plane = to_mdp5_plane(plane);
 866        enum mdp5_pipe pipe = mdp5_plane->pipe;
 867
 868        if (!plane_enabled(plane->state) && mdp5_kms->smp) {
 869                DBG("%s: free SMP", mdp5_plane->name);
 870                mdp5_smp_release(mdp5_kms->smp, pipe);
 871        }
 872}
 873
 874/* initialize plane */
 875struct drm_plane *mdp5_plane_init(struct drm_device *dev,
 876                enum mdp5_pipe pipe, bool private_plane, uint32_t reg_offset,
 877                uint32_t caps)
 878{
 879        struct drm_plane *plane = NULL;
 880        struct mdp5_plane *mdp5_plane;
 881        int ret;
 882        enum drm_plane_type type;
 883
 884        mdp5_plane = kzalloc(sizeof(*mdp5_plane), GFP_KERNEL);
 885        if (!mdp5_plane) {
 886                ret = -ENOMEM;
 887                goto fail;
 888        }
 889
 890        plane = &mdp5_plane->base;
 891
 892        mdp5_plane->pipe = pipe;
 893        mdp5_plane->name = pipe2name(pipe);
 894        mdp5_plane->caps = caps;
 895
 896        mdp5_plane->nformats = mdp_get_formats(mdp5_plane->formats,
 897                ARRAY_SIZE(mdp5_plane->formats),
 898                !pipe_supports_yuv(mdp5_plane->caps));
 899
 900        mdp5_plane->flush_mask = mdp_ctl_flush_mask_pipe(pipe);
 901        mdp5_plane->reg_offset = reg_offset;
 902        spin_lock_init(&mdp5_plane->pipe_lock);
 903
 904        type = private_plane ? DRM_PLANE_TYPE_PRIMARY : DRM_PLANE_TYPE_OVERLAY;
 905        ret = drm_universal_plane_init(dev, plane, 0xff, &mdp5_plane_funcs,
 906                                 mdp5_plane->formats, mdp5_plane->nformats,
 907                                 type, NULL);
 908        if (ret)
 909                goto fail;
 910
 911        drm_plane_helper_add(plane, &mdp5_plane_helper_funcs);
 912
 913        mdp5_plane_install_properties(plane, &plane->base);
 914
 915        return plane;
 916
 917fail:
 918        if (plane)
 919                mdp5_plane_destroy(plane);
 920
 921        return ERR_PTR(ret);
 922}
 923