| 1 | /* |
| 2 | * Copyright (C) 2013 Red Hat |
| 3 | * Author: Rob Clark <robdclark@gmail.com> |
| 4 | * |
| 5 | * This program is free software; you can redistribute it and/or modify it |
| 6 | * under the terms of the GNU General Public License version 2 as published by |
| 7 | * the Free Software Foundation. |
| 8 | * |
| 9 | * This program is distributed in the hope that it will be useful, but WITHOUT |
| 10 | * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or |
| 11 | * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for |
| 12 | * more details. |
| 13 | * |
| 14 | * You should have received a copy of the GNU General Public License along with |
| 15 | * this program. If not, see <http://www.gnu.org/licenses/>. |
| 16 | */ |
| 17 | |
| 18 | #include "mdp5_kms.h" |
| 19 | |
| 20 | |
| 21 | struct mdp5_plane { |
| 22 | struct drm_plane base; |
| 23 | const char *name; |
| 24 | |
| 25 | enum mdp5_pipe pipe; |
| 26 | |
| 27 | uint32_t nformats; |
| 28 | uint32_t formats[32]; |
| 29 | |
| 30 | bool enabled; |
| 31 | }; |
| 32 | #define to_mdp5_plane(x) container_of(x, struct mdp5_plane, base) |
| 33 | |
| 34 | static struct mdp5_kms *get_kms(struct drm_plane *plane) |
| 35 | { |
| 36 | struct msm_drm_private *priv = plane->dev->dev_private; |
| 37 | return to_mdp5_kms(to_mdp_kms(priv->kms)); |
| 38 | } |
| 39 | |
| 40 | static int mdp5_plane_update(struct drm_plane *plane, |
| 41 | struct drm_crtc *crtc, struct drm_framebuffer *fb, |
| 42 | int crtc_x, int crtc_y, |
| 43 | unsigned int crtc_w, unsigned int crtc_h, |
| 44 | uint32_t src_x, uint32_t src_y, |
| 45 | uint32_t src_w, uint32_t src_h) |
| 46 | { |
| 47 | struct mdp5_plane *mdp5_plane = to_mdp5_plane(plane); |
| 48 | |
| 49 | mdp5_plane->enabled = true; |
| 50 | |
| 51 | if (plane->fb) |
| 52 | drm_framebuffer_unreference(plane->fb); |
| 53 | |
| 54 | drm_framebuffer_reference(fb); |
| 55 | |
| 56 | return mdp5_plane_mode_set(plane, crtc, fb, |
| 57 | crtc_x, crtc_y, crtc_w, crtc_h, |
| 58 | src_x, src_y, src_w, src_h); |
| 59 | } |
| 60 | |
| 61 | static int mdp5_plane_disable(struct drm_plane *plane) |
| 62 | { |
| 63 | struct mdp5_plane *mdp5_plane = to_mdp5_plane(plane); |
| 64 | struct mdp5_kms *mdp5_kms = get_kms(plane); |
| 65 | enum mdp5_pipe pipe = mdp5_plane->pipe; |
| 66 | int i; |
| 67 | |
| 68 | DBG("%s: disable", mdp5_plane->name); |
| 69 | |
| 70 | /* update our SMP request to zero (release all our blks): */ |
| 71 | for (i = 0; i < pipe2nclients(pipe); i++) |
| 72 | mdp5_smp_request(mdp5_kms, pipe2client(pipe, i), 0); |
| 73 | |
| 74 | /* TODO detaching now will cause us not to get the last |
| 75 | * vblank and mdp5_smp_commit().. so other planes will |
| 76 | * still see smp blocks previously allocated to us as |
| 77 | * in-use.. |
| 78 | */ |
| 79 | if (plane->crtc) |
| 80 | mdp5_crtc_detach(plane->crtc, plane); |
| 81 | |
| 82 | return 0; |
| 83 | } |
| 84 | |
| 85 | static void mdp5_plane_destroy(struct drm_plane *plane) |
| 86 | { |
| 87 | struct mdp5_plane *mdp5_plane = to_mdp5_plane(plane); |
| 88 | |
| 89 | mdp5_plane_disable(plane); |
| 90 | drm_plane_cleanup(plane); |
| 91 | |
| 92 | kfree(mdp5_plane); |
| 93 | } |
| 94 | |
| 95 | /* helper to install properties which are common to planes and crtcs */ |
| 96 | void mdp5_plane_install_properties(struct drm_plane *plane, |
| 97 | struct drm_mode_object *obj) |
| 98 | { |
| 99 | // XXX |
| 100 | } |
| 101 | |
| 102 | int mdp5_plane_set_property(struct drm_plane *plane, |
| 103 | struct drm_property *property, uint64_t val) |
| 104 | { |
| 105 | // XXX |
| 106 | return -EINVAL; |
| 107 | } |
| 108 | |
| 109 | static const struct drm_plane_funcs mdp5_plane_funcs = { |
| 110 | .update_plane = mdp5_plane_update, |
| 111 | .disable_plane = mdp5_plane_disable, |
| 112 | .destroy = mdp5_plane_destroy, |
| 113 | .set_property = mdp5_plane_set_property, |
| 114 | }; |
| 115 | |
| 116 | void mdp5_plane_set_scanout(struct drm_plane *plane, |
| 117 | struct drm_framebuffer *fb) |
| 118 | { |
| 119 | struct mdp5_plane *mdp5_plane = to_mdp5_plane(plane); |
| 120 | struct mdp5_kms *mdp5_kms = get_kms(plane); |
| 121 | enum mdp5_pipe pipe = mdp5_plane->pipe; |
| 122 | uint32_t nplanes = drm_format_num_planes(fb->pixel_format); |
| 123 | uint32_t iova[4]; |
| 124 | int i; |
| 125 | |
| 126 | for (i = 0; i < nplanes; i++) { |
| 127 | struct drm_gem_object *bo = msm_framebuffer_bo(fb, i); |
| 128 | msm_gem_get_iova(bo, mdp5_kms->id, &iova[i]); |
| 129 | } |
| 130 | for (; i < 4; i++) |
| 131 | iova[i] = 0; |
| 132 | |
| 133 | mdp5_write(mdp5_kms, REG_MDP5_PIPE_SRC_STRIDE_A(pipe), |
| 134 | MDP5_PIPE_SRC_STRIDE_A_P0(fb->pitches[0]) | |
| 135 | MDP5_PIPE_SRC_STRIDE_A_P1(fb->pitches[1])); |
| 136 | |
| 137 | mdp5_write(mdp5_kms, REG_MDP5_PIPE_SRC_STRIDE_B(pipe), |
| 138 | MDP5_PIPE_SRC_STRIDE_B_P2(fb->pitches[2]) | |
| 139 | MDP5_PIPE_SRC_STRIDE_B_P3(fb->pitches[3])); |
| 140 | |
| 141 | mdp5_write(mdp5_kms, REG_MDP5_PIPE_SRC0_ADDR(pipe), iova[0]); |
| 142 | mdp5_write(mdp5_kms, REG_MDP5_PIPE_SRC1_ADDR(pipe), iova[1]); |
| 143 | mdp5_write(mdp5_kms, REG_MDP5_PIPE_SRC2_ADDR(pipe), iova[2]); |
| 144 | mdp5_write(mdp5_kms, REG_MDP5_PIPE_SRC3_ADDR(pipe), iova[3]); |
| 145 | |
| 146 | plane->fb = fb; |
| 147 | } |
| 148 | |
| 149 | /* NOTE: looks like if horizontal decimation is used (if we supported that) |
| 150 | * then the width used to calculate SMP block requirements is the post- |
| 151 | * decimated width. Ie. SMP buffering sits downstream of decimation (which |
| 152 | * presumably happens during the dma from scanout buffer). |
| 153 | */ |
| 154 | static int request_smp_blocks(struct drm_plane *plane, uint32_t format, |
| 155 | uint32_t nplanes, uint32_t width) |
| 156 | { |
| 157 | struct drm_device *dev = plane->dev; |
| 158 | struct mdp5_plane *mdp5_plane = to_mdp5_plane(plane); |
| 159 | struct mdp5_kms *mdp5_kms = get_kms(plane); |
| 160 | enum mdp5_pipe pipe = mdp5_plane->pipe; |
| 161 | int i, hsub, nlines, nblks, ret; |
| 162 | |
| 163 | hsub = drm_format_horz_chroma_subsampling(format); |
| 164 | |
| 165 | /* different if BWC (compressed framebuffer?) enabled: */ |
| 166 | nlines = 2; |
| 167 | |
| 168 | for (i = 0, nblks = 0; i < nplanes; i++) { |
| 169 | int n, fetch_stride, cpp; |
| 170 | |
| 171 | cpp = drm_format_plane_cpp(format, i); |
| 172 | fetch_stride = width * cpp / (i ? hsub : 1); |
| 173 | |
| 174 | n = DIV_ROUND_UP(fetch_stride * nlines, SMP_BLK_SIZE); |
| 175 | |
| 176 | /* for hw rev v1.00 */ |
| 177 | if (mdp5_kms->rev == 0) |
| 178 | n = roundup_pow_of_two(n); |
| 179 | |
| 180 | DBG("%s[%d]: request %d SMP blocks", mdp5_plane->name, i, n); |
| 181 | ret = mdp5_smp_request(mdp5_kms, pipe2client(pipe, i), n); |
| 182 | if (ret) { |
| 183 | dev_err(dev->dev, "Could not allocate %d SMP blocks: %d\n", |
| 184 | n, ret); |
| 185 | return ret; |
| 186 | } |
| 187 | |
| 188 | nblks += n; |
| 189 | } |
| 190 | |
| 191 | /* in success case, return total # of blocks allocated: */ |
| 192 | return nblks; |
| 193 | } |
| 194 | |
| 195 | static void set_fifo_thresholds(struct drm_plane *plane, int nblks) |
| 196 | { |
| 197 | struct mdp5_plane *mdp5_plane = to_mdp5_plane(plane); |
| 198 | struct mdp5_kms *mdp5_kms = get_kms(plane); |
| 199 | enum mdp5_pipe pipe = mdp5_plane->pipe; |
| 200 | uint32_t val; |
| 201 | |
| 202 | /* 1/4 of SMP pool that is being fetched */ |
| 203 | val = (nblks * SMP_ENTRIES_PER_BLK) / 4; |
| 204 | |
| 205 | mdp5_write(mdp5_kms, REG_MDP5_PIPE_REQPRIO_FIFO_WM_0(pipe), val * 1); |
| 206 | mdp5_write(mdp5_kms, REG_MDP5_PIPE_REQPRIO_FIFO_WM_1(pipe), val * 2); |
| 207 | mdp5_write(mdp5_kms, REG_MDP5_PIPE_REQPRIO_FIFO_WM_2(pipe), val * 3); |
| 208 | |
| 209 | } |
| 210 | |
| 211 | int mdp5_plane_mode_set(struct drm_plane *plane, |
| 212 | struct drm_crtc *crtc, struct drm_framebuffer *fb, |
| 213 | int crtc_x, int crtc_y, |
| 214 | unsigned int crtc_w, unsigned int crtc_h, |
| 215 | uint32_t src_x, uint32_t src_y, |
| 216 | uint32_t src_w, uint32_t src_h) |
| 217 | { |
| 218 | struct mdp5_plane *mdp5_plane = to_mdp5_plane(plane); |
| 219 | struct mdp5_kms *mdp5_kms = get_kms(plane); |
| 220 | enum mdp5_pipe pipe = mdp5_plane->pipe; |
| 221 | const struct mdp_format *format; |
| 222 | uint32_t nplanes, config = 0; |
| 223 | uint32_t phasex_step = 0, phasey_step = 0; |
| 224 | uint32_t hdecm = 0, vdecm = 0; |
| 225 | int i, nblks; |
| 226 | |
| 227 | nplanes = drm_format_num_planes(fb->pixel_format); |
| 228 | |
| 229 | /* bad formats should already be rejected: */ |
| 230 | if (WARN_ON(nplanes > pipe2nclients(pipe))) |
| 231 | return -EINVAL; |
| 232 | |
| 233 | /* src values are in Q16 fixed point, convert to integer: */ |
| 234 | src_x = src_x >> 16; |
| 235 | src_y = src_y >> 16; |
| 236 | src_w = src_w >> 16; |
| 237 | src_h = src_h >> 16; |
| 238 | |
| 239 | DBG("%s: FB[%u] %u,%u,%u,%u -> CRTC[%u] %d,%d,%u,%u", mdp5_plane->name, |
| 240 | fb->base.id, src_x, src_y, src_w, src_h, |
| 241 | crtc->base.id, crtc_x, crtc_y, crtc_w, crtc_h); |
| 242 | |
| 243 | /* |
| 244 | * Calculate and request required # of smp blocks: |
| 245 | */ |
| 246 | nblks = request_smp_blocks(plane, fb->pixel_format, nplanes, src_w); |
| 247 | if (nblks < 0) |
| 248 | return nblks; |
| 249 | |
| 250 | /* |
| 251 | * Currently we update the hw for allocations/requests immediately, |
| 252 | * but once atomic modeset/pageflip is in place, the allocation |
| 253 | * would move into atomic->check_plane_state(), while updating the |
| 254 | * hw would remain here: |
| 255 | */ |
| 256 | for (i = 0; i < pipe2nclients(pipe); i++) |
| 257 | mdp5_smp_configure(mdp5_kms, pipe2client(pipe, i)); |
| 258 | |
| 259 | if (src_w != crtc_w) { |
| 260 | config |= MDP5_PIPE_SCALE_CONFIG_SCALEX_EN; |
| 261 | /* TODO calc phasex_step, hdecm */ |
| 262 | } |
| 263 | |
| 264 | if (src_h != crtc_h) { |
| 265 | config |= MDP5_PIPE_SCALE_CONFIG_SCALEY_EN; |
| 266 | /* TODO calc phasey_step, vdecm */ |
| 267 | } |
| 268 | |
| 269 | mdp5_write(mdp5_kms, REG_MDP5_PIPE_SRC_IMG_SIZE(pipe), |
| 270 | MDP5_PIPE_SRC_IMG_SIZE_WIDTH(src_w) | |
| 271 | MDP5_PIPE_SRC_IMG_SIZE_HEIGHT(src_h)); |
| 272 | |
| 273 | mdp5_write(mdp5_kms, REG_MDP5_PIPE_SRC_SIZE(pipe), |
| 274 | MDP5_PIPE_SRC_SIZE_WIDTH(src_w) | |
| 275 | MDP5_PIPE_SRC_SIZE_HEIGHT(src_h)); |
| 276 | |
| 277 | mdp5_write(mdp5_kms, REG_MDP5_PIPE_SRC_XY(pipe), |
| 278 | MDP5_PIPE_SRC_XY_X(src_x) | |
| 279 | MDP5_PIPE_SRC_XY_Y(src_y)); |
| 280 | |
| 281 | mdp5_write(mdp5_kms, REG_MDP5_PIPE_OUT_SIZE(pipe), |
| 282 | MDP5_PIPE_OUT_SIZE_WIDTH(crtc_w) | |
| 283 | MDP5_PIPE_OUT_SIZE_HEIGHT(crtc_h)); |
| 284 | |
| 285 | mdp5_write(mdp5_kms, REG_MDP5_PIPE_OUT_XY(pipe), |
| 286 | MDP5_PIPE_OUT_XY_X(crtc_x) | |
| 287 | MDP5_PIPE_OUT_XY_Y(crtc_y)); |
| 288 | |
| 289 | mdp5_plane_set_scanout(plane, fb); |
| 290 | |
| 291 | format = to_mdp_format(msm_framebuffer_format(fb)); |
| 292 | |
| 293 | mdp5_write(mdp5_kms, REG_MDP5_PIPE_SRC_FORMAT(pipe), |
| 294 | MDP5_PIPE_SRC_FORMAT_A_BPC(format->bpc_a) | |
| 295 | MDP5_PIPE_SRC_FORMAT_R_BPC(format->bpc_r) | |
| 296 | MDP5_PIPE_SRC_FORMAT_G_BPC(format->bpc_g) | |
| 297 | MDP5_PIPE_SRC_FORMAT_B_BPC(format->bpc_b) | |
| 298 | COND(format->alpha_enable, MDP5_PIPE_SRC_FORMAT_ALPHA_ENABLE) | |
| 299 | MDP5_PIPE_SRC_FORMAT_CPP(format->cpp - 1) | |
| 300 | MDP5_PIPE_SRC_FORMAT_UNPACK_COUNT(format->unpack_count - 1) | |
| 301 | COND(format->unpack_tight, MDP5_PIPE_SRC_FORMAT_UNPACK_TIGHT) | |
| 302 | MDP5_PIPE_SRC_FORMAT_NUM_PLANES(nplanes - 1) | |
| 303 | MDP5_PIPE_SRC_FORMAT_CHROMA_SAMP(CHROMA_RGB)); |
| 304 | |
| 305 | mdp5_write(mdp5_kms, REG_MDP5_PIPE_SRC_UNPACK(pipe), |
| 306 | MDP5_PIPE_SRC_UNPACK_ELEM0(format->unpack[0]) | |
| 307 | MDP5_PIPE_SRC_UNPACK_ELEM1(format->unpack[1]) | |
| 308 | MDP5_PIPE_SRC_UNPACK_ELEM2(format->unpack[2]) | |
| 309 | MDP5_PIPE_SRC_UNPACK_ELEM3(format->unpack[3])); |
| 310 | |
| 311 | mdp5_write(mdp5_kms, REG_MDP5_PIPE_SRC_OP_MODE(pipe), |
| 312 | MDP5_PIPE_SRC_OP_MODE_BWC(BWC_LOSSLESS)); |
| 313 | |
| 314 | /* not using secure mode: */ |
| 315 | mdp5_write(mdp5_kms, REG_MDP5_PIPE_SRC_ADDR_SW_STATUS(pipe), 0); |
| 316 | |
| 317 | mdp5_write(mdp5_kms, REG_MDP5_PIPE_SCALE_PHASE_STEP_X(pipe), phasex_step); |
| 318 | mdp5_write(mdp5_kms, REG_MDP5_PIPE_SCALE_PHASE_STEP_Y(pipe), phasey_step); |
| 319 | mdp5_write(mdp5_kms, REG_MDP5_PIPE_DECIMATION(pipe), |
| 320 | MDP5_PIPE_DECIMATION_VERT(vdecm) | |
| 321 | MDP5_PIPE_DECIMATION_HORZ(hdecm)); |
| 322 | mdp5_write(mdp5_kms, REG_MDP5_PIPE_SCALE_CONFIG(pipe), |
| 323 | MDP5_PIPE_SCALE_CONFIG_SCALEX_MIN_FILTER(SCALE_FILTER_NEAREST) | |
| 324 | MDP5_PIPE_SCALE_CONFIG_SCALEY_MIN_FILTER(SCALE_FILTER_NEAREST) | |
| 325 | MDP5_PIPE_SCALE_CONFIG_SCALEX_CR_FILTER(SCALE_FILTER_NEAREST) | |
| 326 | MDP5_PIPE_SCALE_CONFIG_SCALEY_CR_FILTER(SCALE_FILTER_NEAREST) | |
| 327 | MDP5_PIPE_SCALE_CONFIG_SCALEX_MAX_FILTER(SCALE_FILTER_NEAREST) | |
| 328 | MDP5_PIPE_SCALE_CONFIG_SCALEY_MAX_FILTER(SCALE_FILTER_NEAREST)); |
| 329 | |
| 330 | set_fifo_thresholds(plane, nblks); |
| 331 | |
| 332 | /* TODO detach from old crtc (if we had more than one) */ |
| 333 | mdp5_crtc_attach(crtc, plane); |
| 334 | |
| 335 | return 0; |
| 336 | } |
| 337 | |
| 338 | void mdp5_plane_complete_flip(struct drm_plane *plane) |
| 339 | { |
| 340 | struct mdp5_kms *mdp5_kms = get_kms(plane); |
| 341 | enum mdp5_pipe pipe = to_mdp5_plane(plane)->pipe; |
| 342 | int i; |
| 343 | |
| 344 | for (i = 0; i < pipe2nclients(pipe); i++) |
| 345 | mdp5_smp_commit(mdp5_kms, pipe2client(pipe, i)); |
| 346 | } |
| 347 | |
| 348 | enum mdp5_pipe mdp5_plane_pipe(struct drm_plane *plane) |
| 349 | { |
| 350 | struct mdp5_plane *mdp5_plane = to_mdp5_plane(plane); |
| 351 | return mdp5_plane->pipe; |
| 352 | } |
| 353 | |
| 354 | /* initialize plane */ |
| 355 | struct drm_plane *mdp5_plane_init(struct drm_device *dev, |
| 356 | enum mdp5_pipe pipe, bool private_plane) |
| 357 | { |
| 358 | struct drm_plane *plane = NULL; |
| 359 | struct mdp5_plane *mdp5_plane; |
| 360 | int ret; |
| 361 | enum drm_plane_type type; |
| 362 | |
| 363 | mdp5_plane = kzalloc(sizeof(*mdp5_plane), GFP_KERNEL); |
| 364 | if (!mdp5_plane) { |
| 365 | ret = -ENOMEM; |
| 366 | goto fail; |
| 367 | } |
| 368 | |
| 369 | plane = &mdp5_plane->base; |
| 370 | |
| 371 | mdp5_plane->pipe = pipe; |
| 372 | mdp5_plane->name = pipe2name(pipe); |
| 373 | |
| 374 | mdp5_plane->nformats = mdp5_get_formats(pipe, mdp5_plane->formats, |
| 375 | ARRAY_SIZE(mdp5_plane->formats)); |
| 376 | |
| 377 | type = private_plane ? DRM_PLANE_TYPE_PRIMARY : DRM_PLANE_TYPE_OVERLAY; |
| 378 | drm_universal_plane_init(dev, plane, 0xff, &mdp5_plane_funcs, |
| 379 | mdp5_plane->formats, mdp5_plane->nformats, |
| 380 | type); |
| 381 | |
| 382 | mdp5_plane_install_properties(plane, &plane->base); |
| 383 | |
| 384 | return plane; |
| 385 | |
| 386 | fail: |
| 387 | if (plane) |
| 388 | mdp5_plane_destroy(plane); |
| 389 | |
| 390 | return ERR_PTR(ret); |
| 391 | } |