drivers/gpu/drm/imx/dcss/dcss-plane.c

   1 // SPDX-License-Identifier: GPL-2.0
   2 /*
   3  * Copyright 2019 NXP.
   4  */
   5
   6 #include <drm/drm_atomic.h>
   7 #include <drm/drm_atomic_helper.h>
   8 #include <drm/drm_fb_cma_helper.h>
   9 #include <drm/drm_gem_atomic_helper.h>
  10 #include <drm/drm_gem_cma_helper.h>
  11
  12 #include "dcss-dev.h"
  13 #include "dcss-kms.h"
  14
  15 static const u32 dcss_common_formats[] = {
  16         /* RGB */
  17         DRM_FORMAT_ARGB8888,
  18         DRM_FORMAT_XRGB8888,
  19         DRM_FORMAT_ABGR8888,
  20         DRM_FORMAT_XBGR8888,
  21         DRM_FORMAT_RGBA8888,
  22         DRM_FORMAT_RGBX8888,
  23         DRM_FORMAT_BGRA8888,
  24         DRM_FORMAT_BGRX8888,
  25         DRM_FORMAT_XRGB2101010,
  26         DRM_FORMAT_XBGR2101010,
  27         DRM_FORMAT_RGBX1010102,
  28         DRM_FORMAT_BGRX1010102,
  29         DRM_FORMAT_ARGB2101010,
  30         DRM_FORMAT_ABGR2101010,
  31         DRM_FORMAT_RGBA1010102,
  32         DRM_FORMAT_BGRA1010102,
  33 };
  34
  35 static const u64 dcss_video_format_modifiers[] = {
  36         DRM_FORMAT_MOD_LINEAR,
  37         DRM_FORMAT_MOD_INVALID,
  38 };
  39
  40 static const u64 dcss_graphics_format_modifiers[] = {
  41         DRM_FORMAT_MOD_VIVANTE_TILED,
  42         DRM_FORMAT_MOD_VIVANTE_SUPER_TILED,
  43         DRM_FORMAT_MOD_LINEAR,
  44         DRM_FORMAT_MOD_INVALID,
  45 };
  46
  47 static inline struct dcss_plane *to_dcss_plane(struct drm_plane *p)
  48 {
  49         return container_of(p, struct dcss_plane, base);
  50 }
  51
  52 static inline bool dcss_plane_fb_is_linear(const struct drm_framebuffer *fb)
  53 {
  54         return ((fb->flags & DRM_MODE_FB_MODIFIERS) == 0) ||
  55                ((fb->flags & DRM_MODE_FB_MODIFIERS) != 0 &&
  56                 fb->modifier == DRM_FORMAT_MOD_LINEAR);
  57 }
  58
  59 static void dcss_plane_destroy(struct drm_plane *plane)
  60 {
  61         struct dcss_plane *dcss_plane = container_of(plane, struct dcss_plane,
  62                                                      base);
  63
  64         drm_plane_cleanup(plane);
  65         kfree(dcss_plane);
  66 }
  67
  68 static bool dcss_plane_format_mod_supported(struct drm_plane *plane,
  69                                             u32 format,
  70                                             u64 modifier)
  71 {
  72         switch (plane->type) {
  73         case DRM_PLANE_TYPE_PRIMARY:
  74                 switch (format) {
  75                 case DRM_FORMAT_ARGB8888:
  76                 case DRM_FORMAT_XRGB8888:
  77                 case DRM_FORMAT_ARGB2101010:
  78                         return modifier == DRM_FORMAT_MOD_LINEAR ||
  79                                modifier == DRM_FORMAT_MOD_VIVANTE_TILED ||
  80                                modifier == DRM_FORMAT_MOD_VIVANTE_SUPER_TILED;
  81                 default:
  82                         return modifier == DRM_FORMAT_MOD_LINEAR;
  83                 }
  84                 break;
  85         case DRM_PLANE_TYPE_OVERLAY:
  86                 return modifier == DRM_FORMAT_MOD_LINEAR;
  87         default:
  88                 return false;
  89         }
  90 }
  91
  92 static const struct drm_plane_funcs dcss_plane_funcs = {
  93         .update_plane           = drm_atomic_helper_update_plane,
  94         .disable_plane          = drm_atomic_helper_disable_plane,
  95         .destroy                = dcss_plane_destroy,
  96         .reset                  = drm_atomic_helper_plane_reset,
  97         .atomic_duplicate_state = drm_atomic_helper_plane_duplicate_state,
  98         .atomic_destroy_state   = drm_atomic_helper_plane_destroy_state,
  99         .format_mod_supported   = dcss_plane_format_mod_supported,
 100 };
 101
 102 static bool dcss_plane_can_rotate(const struct drm_format_info *format,
 103                                   bool mod_present, u64 modifier,
 104                                   unsigned int rotation)
 105 {
 106         bool linear_format = !mod_present || modifier == DRM_FORMAT_MOD_LINEAR;
 107         u32 supported_rotation = DRM_MODE_ROTATE_0;
 108
 109         if (!format->is_yuv && linear_format)
 110                 supported_rotation = DRM_MODE_ROTATE_0 | DRM_MODE_ROTATE_180 |
 111                                      DRM_MODE_REFLECT_MASK;
 112         else if (!format->is_yuv &&
 113                  (modifier == DRM_FORMAT_MOD_VIVANTE_TILED ||
 114                   modifier == DRM_FORMAT_MOD_VIVANTE_SUPER_TILED))
 115                 supported_rotation = DRM_MODE_ROTATE_MASK |
 116                                      DRM_MODE_REFLECT_MASK;
 117         else if (format->is_yuv && linear_format &&
 118                  (format->format == DRM_FORMAT_NV12 ||
 119                   format->format == DRM_FORMAT_NV21))
 120                 supported_rotation = DRM_MODE_ROTATE_0 | DRM_MODE_ROTATE_180 |
 121                                      DRM_MODE_REFLECT_MASK;
 122
 123         return !!(rotation & supported_rotation);
 124 }
 125
 126 static bool dcss_plane_is_source_size_allowed(u16 src_w, u16 src_h, u32 pix_fmt)
 127 {
 128         if (src_w < 64 &&
 129             (pix_fmt == DRM_FORMAT_NV12 || pix_fmt == DRM_FORMAT_NV21))
 130                 return false;
 131         else if (src_w < 32 &&
 132                  (pix_fmt == DRM_FORMAT_UYVY || pix_fmt == DRM_FORMAT_VYUY ||
 133                   pix_fmt == DRM_FORMAT_YUYV || pix_fmt == DRM_FORMAT_YVYU))
 134                 return false;
 135
 136         return src_w >= 16 && src_h >= 8;
 137 }
 138
 139 static int dcss_plane_atomic_check(struct drm_plane *plane,
 140                                    struct drm_atomic_state *state)
 141 {
 142         struct drm_plane_state *new_plane_state = drm_atomic_get_new_plane_state(state,
 143                                                                                  plane);
 144         struct dcss_plane *dcss_plane = to_dcss_plane(plane);
 145         struct dcss_dev *dcss = plane->dev->dev_private;
 146         struct drm_framebuffer *fb = new_plane_state->fb;
 147         bool is_primary_plane = plane->type == DRM_PLANE_TYPE_PRIMARY;
 148         struct drm_gem_cma_object *cma_obj;
 149         struct drm_crtc_state *crtc_state;
 150         int hdisplay, vdisplay;
 151         int min, max;
 152         int ret;
 153
 154         if (!fb || !new_plane_state->crtc)
 155                 return 0;
 156
 157         cma_obj = drm_fb_cma_get_gem_obj(fb, 0);
 158         WARN_ON(!cma_obj);
 159
 160         crtc_state = drm_atomic_get_existing_crtc_state(state,
 161                                                         new_plane_state->crtc);
 162
 163         hdisplay = crtc_state->adjusted_mode.hdisplay;
 164         vdisplay = crtc_state->adjusted_mode.vdisplay;
 165
 166         if (!dcss_plane_is_source_size_allowed(new_plane_state->src_w >> 16,
 167                                                new_plane_state->src_h >> 16,
 168                                                fb->format->format)) {
 169                 DRM_DEBUG_KMS("Source plane size is not allowed!\n");
 170                 return -EINVAL;
 171         }
 172
 173         dcss_scaler_get_min_max_ratios(dcss->scaler, dcss_plane->ch_num,
 174                                        &min, &max);
 175
 176         ret = drm_atomic_helper_check_plane_state(new_plane_state, crtc_state,
 177                                                   min, max, !is_primary_plane,
 178                                                   false);
 179         if (ret)
 180                 return ret;
 181
 182         if (!new_plane_state->visible)
 183                 return 0;
 184
 185         if (!dcss_plane_can_rotate(fb->format,
 186                                    !!(fb->flags & DRM_MODE_FB_MODIFIERS),
 187                                    fb->modifier,
 188                                    new_plane_state->rotation)) {
 189                 DRM_DEBUG_KMS("requested rotation is not allowed!\n");
 190                 return -EINVAL;
 191         }
 192
 193         if ((new_plane_state->crtc_x < 0 || new_plane_state->crtc_y < 0 ||
 194              new_plane_state->crtc_x + new_plane_state->crtc_w > hdisplay ||
 195              new_plane_state->crtc_y + new_plane_state->crtc_h > vdisplay) &&
 196             !dcss_plane_fb_is_linear(fb)) {
 197                 DRM_DEBUG_KMS("requested cropping operation is not allowed!\n");
 198                 return -EINVAL;
 199         }
 200
 201         if ((fb->flags & DRM_MODE_FB_MODIFIERS) &&
 202             !plane->funcs->format_mod_supported(plane,
 203                                 fb->format->format,
 204                                 fb->modifier)) {
 205                 DRM_DEBUG_KMS("Invalid modifier: %llx", fb->modifier);
 206                 return -EINVAL;
 207         }
 208
 209         return 0;
 210 }
 211
 212 static void dcss_plane_atomic_set_base(struct dcss_plane *dcss_plane)
 213 {
 214         struct drm_plane *plane = &dcss_plane->base;
 215         struct drm_plane_state *state = plane->state;
 216         struct dcss_dev *dcss = plane->dev->dev_private;
 217         struct drm_framebuffer *fb = state->fb;
 218         const struct drm_format_info *format = fb->format;
 219         struct drm_gem_cma_object *cma_obj = drm_fb_cma_get_gem_obj(fb, 0);
 220         unsigned long p1_ba = 0, p2_ba = 0;
 221
 222         if (!format->is_yuv ||
 223             format->format == DRM_FORMAT_NV12 ||
 224             format->format == DRM_FORMAT_NV21)
 225                 p1_ba = cma_obj->paddr + fb->offsets[0] +
 226                         fb->pitches[0] * (state->src.y1 >> 16) +
 227                         format->char_per_block[0] * (state->src.x1 >> 16);
 228         else if (format->format == DRM_FORMAT_UYVY ||
 229                  format->format == DRM_FORMAT_VYUY ||
 230                  format->format == DRM_FORMAT_YUYV ||
 231                  format->format == DRM_FORMAT_YVYU)
 232                 p1_ba = cma_obj->paddr + fb->offsets[0] +
 233                         fb->pitches[0] * (state->src.y1 >> 16) +
 234                         2 * format->char_per_block[0] * (state->src.x1 >> 17);
 235
 236         if (format->format == DRM_FORMAT_NV12 ||
 237             format->format == DRM_FORMAT_NV21)
 238                 p2_ba = cma_obj->paddr + fb->offsets[1] +
 239                         (((fb->pitches[1] >> 1) * (state->src.y1 >> 17) +
 240                         (state->src.x1 >> 17)) << 1);
 241
 242         dcss_dpr_addr_set(dcss->dpr, dcss_plane->ch_num, p1_ba, p2_ba,
 243                           fb->pitches[0]);
 244 }
 245
 246 static bool dcss_plane_needs_setup(struct drm_plane_state *state,
 247                                    struct drm_plane_state *old_state)
 248 {
 249         struct drm_framebuffer *fb = state->fb;
 250         struct drm_framebuffer *old_fb = old_state->fb;
 251
 252         return state->crtc_x != old_state->crtc_x ||
 253                state->crtc_y != old_state->crtc_y ||
 254                state->crtc_w != old_state->crtc_w ||
 255                state->crtc_h != old_state->crtc_h ||
 256                state->src_x  != old_state->src_x  ||
 257                state->src_y  != old_state->src_y  ||
 258                state->src_w  != old_state->src_w  ||
 259                state->src_h  != old_state->src_h  ||
 260                fb->format->format != old_fb->format->format ||
 261                fb->modifier  != old_fb->modifier ||
 262                state->rotation != old_state->rotation ||
 263                state->scaling_filter != old_state->scaling_filter;
 264 }
 265
 266 static void dcss_plane_atomic_update(struct drm_plane *plane,
 267                                      struct drm_atomic_state *state)
 268 {
 269         struct drm_plane_state *old_state = drm_atomic_get_old_plane_state(state,
 270                                                                            plane);
 271         struct drm_plane_state *new_state = drm_atomic_get_new_plane_state(state,
 272                                                                            plane);
 273         struct dcss_plane *dcss_plane = to_dcss_plane(plane);
 274         struct dcss_dev *dcss = plane->dev->dev_private;
 275         struct drm_framebuffer *fb = new_state->fb;
 276         struct drm_crtc_state *crtc_state;
 277         bool modifiers_present;
 278         u32 src_w, src_h, dst_w, dst_h;
 279         struct drm_rect src, dst;
 280         bool enable = true;
 281         bool is_rotation_90_or_270;
 282
 283         if (!fb || !new_state->crtc || !new_state->visible)
 284                 return;
 285
 286         crtc_state = new_state->crtc->state;
 287         modifiers_present = !!(fb->flags & DRM_MODE_FB_MODIFIERS);
 288
 289         if (old_state->fb && !drm_atomic_crtc_needs_modeset(crtc_state) &&
 290             !dcss_plane_needs_setup(new_state, old_state)) {
 291                 dcss_plane_atomic_set_base(dcss_plane);
 292                 return;
 293         }
 294
 295         src = plane->state->src;
 296         dst = plane->state->dst;
 297
 298         /*
 299          * The width and height after clipping.
 300          */
 301         src_w = drm_rect_width(&src) >> 16;
 302         src_h = drm_rect_height(&src) >> 16;
 303         dst_w = drm_rect_width(&dst);
 304         dst_h = drm_rect_height(&dst);
 305
 306         if (plane->type == DRM_PLANE_TYPE_OVERLAY &&
 307             modifiers_present && fb->modifier == DRM_FORMAT_MOD_LINEAR)
 308                 modifiers_present = false;
 309
 310         dcss_dpr_format_set(dcss->dpr, dcss_plane->ch_num,
 311                             new_state->fb->format,
 312                             modifiers_present ? fb->modifier :
 313                                                 DRM_FORMAT_MOD_LINEAR);
 314         dcss_dpr_set_res(dcss->dpr, dcss_plane->ch_num, src_w, src_h);
 315         dcss_dpr_set_rotation(dcss->dpr, dcss_plane->ch_num,
 316                               new_state->rotation);
 317
 318         dcss_plane_atomic_set_base(dcss_plane);
 319
 320         is_rotation_90_or_270 = new_state->rotation & (DRM_MODE_ROTATE_90 |
 321                                                    DRM_MODE_ROTATE_270);
 322
 323         dcss_scaler_set_filter(dcss->scaler, dcss_plane->ch_num,
 324                                new_state->scaling_filter);
 325
 326         dcss_scaler_setup(dcss->scaler, dcss_plane->ch_num,
 327                           new_state->fb->format,
 328                           is_rotation_90_or_270 ? src_h : src_w,
 329                           is_rotation_90_or_270 ? src_w : src_h,
 330                           dst_w, dst_h,
 331                           drm_mode_vrefresh(&crtc_state->mode));
 332
 333         dcss_dtg_plane_pos_set(dcss->dtg, dcss_plane->ch_num,
 334                                dst.x1, dst.y1, dst_w, dst_h);
 335         dcss_dtg_plane_alpha_set(dcss->dtg, dcss_plane->ch_num,
 336                                  fb->format, new_state->alpha >> 8);
 337
 338         if (!dcss_plane->ch_num && (new_state->alpha >> 8) == 0)
 339                 enable = false;
 340
 341         dcss_dpr_enable(dcss->dpr, dcss_plane->ch_num, enable);
 342         dcss_scaler_ch_enable(dcss->scaler, dcss_plane->ch_num, enable);
 343
 344         if (!enable)
 345                 dcss_dtg_plane_pos_set(dcss->dtg, dcss_plane->ch_num,
 346                                        0, 0, 0, 0);
 347
 348         dcss_dtg_ch_enable(dcss->dtg, dcss_plane->ch_num, enable);
 349 }
 350
 351 static void dcss_plane_atomic_disable(struct drm_plane *plane,
 352                                       struct drm_atomic_state *state)
 353 {
 354         struct dcss_plane *dcss_plane = to_dcss_plane(plane);
 355         struct dcss_dev *dcss = plane->dev->dev_private;
 356
 357         dcss_dpr_enable(dcss->dpr, dcss_plane->ch_num, false);
 358         dcss_scaler_ch_enable(dcss->scaler, dcss_plane->ch_num, false);
 359         dcss_dtg_plane_pos_set(dcss->dtg, dcss_plane->ch_num, 0, 0, 0, 0);
 360         dcss_dtg_ch_enable(dcss->dtg, dcss_plane->ch_num, false);
 361 }
 362
 363 static const struct drm_plane_helper_funcs dcss_plane_helper_funcs = {
 364         .atomic_check = dcss_plane_atomic_check,
 365         .atomic_update = dcss_plane_atomic_update,
 366         .atomic_disable = dcss_plane_atomic_disable,
 367 };
 368
 369 struct dcss_plane *dcss_plane_init(struct drm_device *drm,
 370                                    unsigned int possible_crtcs,
 371                                    enum drm_plane_type type,
 372                                    unsigned int zpos)
 373 {
 374         struct dcss_plane *dcss_plane;
 375         const u64 *format_modifiers = dcss_video_format_modifiers;
 376         int ret;
 377
 378         if (zpos > 2)
 379                 return ERR_PTR(-EINVAL);
 380
 381         dcss_plane = kzalloc(sizeof(*dcss_plane), GFP_KERNEL);
 382         if (!dcss_plane) {
 383                 DRM_ERROR("failed to allocate plane\n");
 384                 return ERR_PTR(-ENOMEM);
 385         }
 386
 387         if (type == DRM_PLANE_TYPE_PRIMARY)
 388                 format_modifiers = dcss_graphics_format_modifiers;
 389
 390         ret = drm_universal_plane_init(drm, &dcss_plane->base, possible_crtcs,
 391                                        &dcss_plane_funcs, dcss_common_formats,
 392                                        ARRAY_SIZE(dcss_common_formats),
 393                                        format_modifiers, type, NULL);
 394         if (ret) {
 395                 DRM_ERROR("failed to initialize plane\n");
 396                 kfree(dcss_plane);
 397                 return ERR_PTR(ret);
 398         }
 399
 400         drm_plane_helper_add(&dcss_plane->base, &dcss_plane_helper_funcs);
 401
 402         ret = drm_plane_create_zpos_immutable_property(&dcss_plane->base, zpos);
 403         if (ret)
 404                 return ERR_PTR(ret);
 405
 406         drm_plane_create_scaling_filter_property(&dcss_plane->base,
 407                                         BIT(DRM_SCALING_FILTER_DEFAULT) |
 408                                         BIT(DRM_SCALING_FILTER_NEAREST_NEIGHBOR));
 409
 410         drm_plane_create_rotation_property(&dcss_plane->base,
 411                                            DRM_MODE_ROTATE_0,
 412                                            DRM_MODE_ROTATE_0   |
 413                                            DRM_MODE_ROTATE_90  |
 414                                            DRM_MODE_ROTATE_180 |
 415                                            DRM_MODE_ROTATE_270 |
 416                                            DRM_MODE_REFLECT_X  |
 417                                            DRM_MODE_REFLECT_Y);
 418
 419         dcss_plane->ch_num = zpos;
 420
 421         return dcss_plane;
 422 }