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 "mdp4_kms.h" 19 20#define DOWN_SCALE_MAX 8 21#define UP_SCALE_MAX 8 22 23struct mdp4_plane { 24 struct drm_plane base; 25 const char *name; 26 27 enum mdp4_pipe pipe; 28 29 uint32_t nformats; 30 uint32_t formats[32]; 31 32 bool enabled; 33}; 34#define to_mdp4_plane(x) container_of(x, struct mdp4_plane, base) 35 36static void mdp4_plane_set_scanout(struct drm_plane *plane, 37 struct drm_framebuffer *fb); 38static int mdp4_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 struct mdp4_kms *get_kms(struct drm_plane *plane) 46{ 47 struct msm_drm_private *priv = plane->dev->dev_private; 48 return to_mdp4_kms(to_mdp_kms(priv->kms)); 49} 50 51static void mdp4_plane_destroy(struct drm_plane *plane) 52{ 53 struct mdp4_plane *mdp4_plane = to_mdp4_plane(plane); 54 55 drm_plane_helper_disable(plane); 56 drm_plane_cleanup(plane); 57 58 kfree(mdp4_plane); 59} 60 61/* helper to install properties which are common to planes and crtcs */ 62void mdp4_plane_install_properties(struct drm_plane *plane, 63 struct drm_mode_object *obj) 64{ 65 // XXX 66} 67 68int mdp4_plane_set_property(struct drm_plane *plane, 69 struct drm_property *property, uint64_t val) 70{ 71 // XXX 72 return -EINVAL; 73} 74 75static const struct drm_plane_funcs mdp4_plane_funcs = { 76 .update_plane = drm_atomic_helper_update_plane, 77 .disable_plane = drm_atomic_helper_disable_plane, 78 .destroy = mdp4_plane_destroy, 79 .set_property = mdp4_plane_set_property, 80 .reset = drm_atomic_helper_plane_reset, 81 .atomic_duplicate_state = drm_atomic_helper_plane_duplicate_state, 82 .atomic_destroy_state = drm_atomic_helper_plane_destroy_state, 83}; 84 85static int mdp4_plane_prepare_fb(struct drm_plane *plane, 86 struct drm_framebuffer *fb, 87 const struct drm_plane_state *new_state) 88{ 89 struct mdp4_plane *mdp4_plane = to_mdp4_plane(plane); 90 struct mdp4_kms *mdp4_kms = get_kms(plane); 91 92 DBG("%s: prepare: FB[%u]", mdp4_plane->name, fb->base.id); 93 return msm_framebuffer_prepare(fb, mdp4_kms->id); 94} 95 96static void mdp4_plane_cleanup_fb(struct drm_plane *plane, 97 struct drm_framebuffer *fb, 98 const struct drm_plane_state *old_state) 99{ 100 struct mdp4_plane *mdp4_plane = to_mdp4_plane(plane); 101 struct mdp4_kms *mdp4_kms = get_kms(plane); 102 103 DBG("%s: cleanup: FB[%u]", mdp4_plane->name, fb->base.id); 104 msm_framebuffer_cleanup(fb, mdp4_kms->id); 105} 106 107 108static int mdp4_plane_atomic_check(struct drm_plane *plane, 109 struct drm_plane_state *state) 110{ 111 return 0; 112} 113 114static void mdp4_plane_atomic_update(struct drm_plane *plane, 115 struct drm_plane_state *old_state) 116{ 117 struct drm_plane_state *state = plane->state; 118 int ret; 119 120 ret = mdp4_plane_mode_set(plane, 121 state->crtc, state->fb, 122 state->crtc_x, state->crtc_y, 123 state->crtc_w, state->crtc_h, 124 state->src_x, state->src_y, 125 state->src_w, state->src_h); 126 /* atomic_check should have ensured that this doesn't fail */ 127 WARN_ON(ret < 0); 128} 129 130static const struct drm_plane_helper_funcs mdp4_plane_helper_funcs = { 131 .prepare_fb = mdp4_plane_prepare_fb, 132 .cleanup_fb = mdp4_plane_cleanup_fb, 133 .atomic_check = mdp4_plane_atomic_check, 134 .atomic_update = mdp4_plane_atomic_update, 135}; 136 137static void mdp4_plane_set_scanout(struct drm_plane *plane, 138 struct drm_framebuffer *fb) 139{ 140 struct mdp4_plane *mdp4_plane = to_mdp4_plane(plane); 141 struct mdp4_kms *mdp4_kms = get_kms(plane); 142 enum mdp4_pipe pipe = mdp4_plane->pipe; 143 144 mdp4_write(mdp4_kms, REG_MDP4_PIPE_SRC_STRIDE_A(pipe), 145 MDP4_PIPE_SRC_STRIDE_A_P0(fb->pitches[0]) | 146 MDP4_PIPE_SRC_STRIDE_A_P1(fb->pitches[1])); 147 148 mdp4_write(mdp4_kms, REG_MDP4_PIPE_SRC_STRIDE_B(pipe), 149 MDP4_PIPE_SRC_STRIDE_B_P2(fb->pitches[2]) | 150 MDP4_PIPE_SRC_STRIDE_B_P3(fb->pitches[3])); 151 152 mdp4_write(mdp4_kms, REG_MDP4_PIPE_SRCP0_BASE(pipe), 153 msm_framebuffer_iova(fb, mdp4_kms->id, 0)); 154 mdp4_write(mdp4_kms, REG_MDP4_PIPE_SRCP1_BASE(pipe), 155 msm_framebuffer_iova(fb, mdp4_kms->id, 1)); 156 mdp4_write(mdp4_kms, REG_MDP4_PIPE_SRCP2_BASE(pipe), 157 msm_framebuffer_iova(fb, mdp4_kms->id, 2)); 158 mdp4_write(mdp4_kms, REG_MDP4_PIPE_SRCP3_BASE(pipe), 159 msm_framebuffer_iova(fb, mdp4_kms->id, 3)); 160 161 plane->fb = fb; 162} 163 164static void mdp4_write_csc_config(struct mdp4_kms *mdp4_kms, 165 enum mdp4_pipe pipe, struct csc_cfg *csc) 166{ 167 int i; 168 169 for (i = 0; i < ARRAY_SIZE(csc->matrix); i++) { 170 mdp4_write(mdp4_kms, REG_MDP4_PIPE_CSC_MV(pipe, i), 171 csc->matrix[i]); 172 } 173 174 for (i = 0; i < ARRAY_SIZE(csc->post_bias) ; i++) { 175 mdp4_write(mdp4_kms, REG_MDP4_PIPE_CSC_PRE_BV(pipe, i), 176 csc->pre_bias[i]); 177 178 mdp4_write(mdp4_kms, REG_MDP4_PIPE_CSC_POST_BV(pipe, i), 179 csc->post_bias[i]); 180 } 181 182 for (i = 0; i < ARRAY_SIZE(csc->post_clamp) ; i++) { 183 mdp4_write(mdp4_kms, REG_MDP4_PIPE_CSC_PRE_LV(pipe, i), 184 csc->pre_clamp[i]); 185 186 mdp4_write(mdp4_kms, REG_MDP4_PIPE_CSC_POST_LV(pipe, i), 187 csc->post_clamp[i]); 188 } 189} 190 191#define MDP4_VG_PHASE_STEP_DEFAULT 0x20000000 192 193static int mdp4_plane_mode_set(struct drm_plane *plane, 194 struct drm_crtc *crtc, struct drm_framebuffer *fb, 195 int crtc_x, int crtc_y, 196 unsigned int crtc_w, unsigned int crtc_h, 197 uint32_t src_x, uint32_t src_y, 198 uint32_t src_w, uint32_t src_h) 199{ 200 struct drm_device *dev = plane->dev; 201 struct mdp4_plane *mdp4_plane = to_mdp4_plane(plane); 202 struct mdp4_kms *mdp4_kms = get_kms(plane); 203 enum mdp4_pipe pipe = mdp4_plane->pipe; 204 const struct mdp_format *format; 205 uint32_t op_mode = 0; 206 uint32_t phasex_step = MDP4_VG_PHASE_STEP_DEFAULT; 207 uint32_t phasey_step = MDP4_VG_PHASE_STEP_DEFAULT; 208 209 if (!(crtc && fb)) { 210 DBG("%s: disabled!", mdp4_plane->name); 211 return 0; 212 } 213 214 /* src values are in Q16 fixed point, convert to integer: */ 215 src_x = src_x >> 16; 216 src_y = src_y >> 16; 217 src_w = src_w >> 16; 218 src_h = src_h >> 16; 219 220 DBG("%s: FB[%u] %u,%u,%u,%u -> CRTC[%u] %d,%d,%u,%u", mdp4_plane->name, 221 fb->base.id, src_x, src_y, src_w, src_h, 222 crtc->base.id, crtc_x, crtc_y, crtc_w, crtc_h); 223 224 format = to_mdp_format(msm_framebuffer_format(fb)); 225 226 if (src_w > (crtc_w * DOWN_SCALE_MAX)) { 227 dev_err(dev->dev, "Width down scaling exceeds limits!\n"); 228 return -ERANGE; 229 } 230 231 if (src_h > (crtc_h * DOWN_SCALE_MAX)) { 232 dev_err(dev->dev, "Height down scaling exceeds limits!\n"); 233 return -ERANGE; 234 } 235 236 if (crtc_w > (src_w * UP_SCALE_MAX)) { 237 dev_err(dev->dev, "Width up scaling exceeds limits!\n"); 238 return -ERANGE; 239 } 240 241 if (crtc_h > (src_h * UP_SCALE_MAX)) { 242 dev_err(dev->dev, "Height up scaling exceeds limits!\n"); 243 return -ERANGE; 244 } 245 246 if (src_w != crtc_w) { 247 uint32_t sel_unit = SCALE_FIR; 248 op_mode |= MDP4_PIPE_OP_MODE_SCALEX_EN; 249 250 if (MDP_FORMAT_IS_YUV(format)) { 251 if (crtc_w > src_w) 252 sel_unit = SCALE_PIXEL_RPT; 253 else if (crtc_w <= (src_w / 4)) 254 sel_unit = SCALE_MN_PHASE; 255 256 op_mode |= MDP4_PIPE_OP_MODE_SCALEX_UNIT_SEL(sel_unit); 257 phasex_step = mult_frac(MDP4_VG_PHASE_STEP_DEFAULT, 258 src_w, crtc_w); 259 } 260 } 261 262 if (src_h != crtc_h) { 263 uint32_t sel_unit = SCALE_FIR; 264 op_mode |= MDP4_PIPE_OP_MODE_SCALEY_EN; 265 266 if (MDP_FORMAT_IS_YUV(format)) { 267 268 if (crtc_h > src_h) 269 sel_unit = SCALE_PIXEL_RPT; 270 else if (crtc_h <= (src_h / 4)) 271 sel_unit = SCALE_MN_PHASE; 272 273 op_mode |= MDP4_PIPE_OP_MODE_SCALEY_UNIT_SEL(sel_unit); 274 phasey_step = mult_frac(MDP4_VG_PHASE_STEP_DEFAULT, 275 src_h, crtc_h); 276 } 277 } 278 279 mdp4_write(mdp4_kms, REG_MDP4_PIPE_SRC_SIZE(pipe), 280 MDP4_PIPE_SRC_SIZE_WIDTH(src_w) | 281 MDP4_PIPE_SRC_SIZE_HEIGHT(src_h)); 282 283 mdp4_write(mdp4_kms, REG_MDP4_PIPE_SRC_XY(pipe), 284 MDP4_PIPE_SRC_XY_X(src_x) | 285 MDP4_PIPE_SRC_XY_Y(src_y)); 286 287 mdp4_write(mdp4_kms, REG_MDP4_PIPE_DST_SIZE(pipe), 288 MDP4_PIPE_DST_SIZE_WIDTH(crtc_w) | 289 MDP4_PIPE_DST_SIZE_HEIGHT(crtc_h)); 290 291 mdp4_write(mdp4_kms, REG_MDP4_PIPE_DST_XY(pipe), 292 MDP4_PIPE_DST_XY_X(crtc_x) | 293 MDP4_PIPE_DST_XY_Y(crtc_y)); 294 295 mdp4_plane_set_scanout(plane, fb); 296 297 mdp4_write(mdp4_kms, REG_MDP4_PIPE_SRC_FORMAT(pipe), 298 MDP4_PIPE_SRC_FORMAT_A_BPC(format->bpc_a) | 299 MDP4_PIPE_SRC_FORMAT_R_BPC(format->bpc_r) | 300 MDP4_PIPE_SRC_FORMAT_G_BPC(format->bpc_g) | 301 MDP4_PIPE_SRC_FORMAT_B_BPC(format->bpc_b) | 302 COND(format->alpha_enable, MDP4_PIPE_SRC_FORMAT_ALPHA_ENABLE) | 303 MDP4_PIPE_SRC_FORMAT_CPP(format->cpp - 1) | 304 MDP4_PIPE_SRC_FORMAT_UNPACK_COUNT(format->unpack_count - 1) | 305 MDP4_PIPE_SRC_FORMAT_FETCH_PLANES(format->fetch_type) | 306 MDP4_PIPE_SRC_FORMAT_CHROMA_SAMP(format->chroma_sample) | 307 COND(format->unpack_tight, MDP4_PIPE_SRC_FORMAT_UNPACK_TIGHT)); 308 309 mdp4_write(mdp4_kms, REG_MDP4_PIPE_SRC_UNPACK(pipe), 310 MDP4_PIPE_SRC_UNPACK_ELEM0(format->unpack[0]) | 311 MDP4_PIPE_SRC_UNPACK_ELEM1(format->unpack[1]) | 312 MDP4_PIPE_SRC_UNPACK_ELEM2(format->unpack[2]) | 313 MDP4_PIPE_SRC_UNPACK_ELEM3(format->unpack[3])); 314 315 if (MDP_FORMAT_IS_YUV(format)) { 316 struct csc_cfg *csc = mdp_get_default_csc_cfg(CSC_YUV2RGB); 317 318 op_mode |= MDP4_PIPE_OP_MODE_SRC_YCBCR; 319 op_mode |= MDP4_PIPE_OP_MODE_CSC_EN; 320 mdp4_write_csc_config(mdp4_kms, pipe, csc); 321 } 322 323 mdp4_write(mdp4_kms, REG_MDP4_PIPE_OP_MODE(pipe), op_mode); 324 mdp4_write(mdp4_kms, REG_MDP4_PIPE_PHASEX_STEP(pipe), phasex_step); 325 mdp4_write(mdp4_kms, REG_MDP4_PIPE_PHASEY_STEP(pipe), phasey_step); 326 327 return 0; 328} 329 330static const char *pipe_names[] = { 331 "VG1", "VG2", 332 "RGB1", "RGB2", "RGB3", 333 "VG3", "VG4", 334}; 335 336enum mdp4_pipe mdp4_plane_pipe(struct drm_plane *plane) 337{ 338 struct mdp4_plane *mdp4_plane = to_mdp4_plane(plane); 339 return mdp4_plane->pipe; 340} 341 342/* initialize plane */ 343struct drm_plane *mdp4_plane_init(struct drm_device *dev, 344 enum mdp4_pipe pipe_id, bool private_plane) 345{ 346 struct drm_plane *plane = NULL; 347 struct mdp4_plane *mdp4_plane; 348 int ret; 349 enum drm_plane_type type; 350 351 mdp4_plane = kzalloc(sizeof(*mdp4_plane), GFP_KERNEL); 352 if (!mdp4_plane) { 353 ret = -ENOMEM; 354 goto fail; 355 } 356 357 plane = &mdp4_plane->base; 358 359 mdp4_plane->pipe = pipe_id; 360 mdp4_plane->name = pipe_names[pipe_id]; 361 362 mdp4_plane->nformats = mdp4_get_formats(pipe_id, mdp4_plane->formats, 363 ARRAY_SIZE(mdp4_plane->formats)); 364 365 type = private_plane ? DRM_PLANE_TYPE_PRIMARY : DRM_PLANE_TYPE_OVERLAY; 366 ret = drm_universal_plane_init(dev, plane, 0xff, &mdp4_plane_funcs, 367 mdp4_plane->formats, mdp4_plane->nformats, type); 368 if (ret) 369 goto fail; 370 371 drm_plane_helper_add(plane, &mdp4_plane_helper_funcs); 372 373 mdp4_plane_install_properties(plane, &plane->base); 374 375 return plane; 376 377fail: 378 if (plane) 379 mdp4_plane_destroy(plane); 380 381 return ERR_PTR(ret); 382} 383