1 /* 2 * drivers/gpu/drm/omapdrm/omap_plane.c 3 * 4 * Copyright (C) 2011 Texas Instruments 5 * Author: Rob Clark <rob.clark@linaro.org> 6 * 7 * This program is free software; you can redistribute it and/or modify it 8 * under the terms of the GNU General Public License version 2 as published by 9 * the Free Software Foundation. 10 * 11 * This program is distributed in the hope that it will be useful, but WITHOUT 12 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or 13 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for 14 * more details. 15 * 16 * You should have received a copy of the GNU General Public License along with 17 * this program. If not, see <http://www.gnu.org/licenses/>. 18 */ 19 20 #include <drm/drm_atomic.h> 21 #include <drm/drm_atomic_helper.h> 22 #include <drm/drm_plane_helper.h> 23 24 #include "omap_dmm_tiler.h" 25 #include "omap_drv.h" 26 27 /* some hackery because omapdss has an 'enum omap_plane' (which would be 28 * better named omap_plane_id).. and compiler seems unhappy about having 29 * both a 'struct omap_plane' and 'enum omap_plane' 30 */ 31 #define omap_plane _omap_plane 32 33 /* 34 * plane funcs 35 */ 36 37 #define to_omap_plane(x) container_of(x, struct omap_plane, base) 38 39 struct omap_plane { 40 struct drm_plane base; 41 int id; /* TODO rename omap_plane -> omap_plane_id in omapdss so I can use the enum */ 42 const char *name; 43 44 uint32_t nformats; 45 uint32_t formats[32]; 46 47 struct omap_drm_irq error_irq; 48 }; 49 50 struct omap_plane_state { 51 struct drm_plane_state base; 52 53 unsigned int zorder; 54 }; 55 56 static inline struct omap_plane_state * 57 to_omap_plane_state(struct drm_plane_state *state) 58 { 59 return container_of(state, struct omap_plane_state, base); 60 } 61 62 static int omap_plane_prepare_fb(struct drm_plane *plane, 63 struct drm_framebuffer *fb, 64 const struct drm_plane_state *new_state) 65 { 66 return omap_framebuffer_pin(fb); 67 } 68 69 static void omap_plane_cleanup_fb(struct drm_plane *plane, 70 struct drm_framebuffer *fb, 71 const struct drm_plane_state *old_state) 72 { 73 omap_framebuffer_unpin(fb); 74 } 75 76 static void omap_plane_atomic_update(struct drm_plane *plane, 77 struct drm_plane_state *old_state) 78 { 79 struct omap_plane *omap_plane = to_omap_plane(plane); 80 struct drm_plane_state *state = plane->state; 81 struct omap_plane_state *omap_state = to_omap_plane_state(state); 82 struct omap_overlay_info info; 83 struct omap_drm_window win; 84 int ret; 85 86 DBG("%s, crtc=%p fb=%p", omap_plane->name, state->crtc, state->fb); 87 88 memset(&info, 0, sizeof(info)); 89 info.rotation_type = OMAP_DSS_ROT_DMA; 90 info.rotation = OMAP_DSS_ROT_0; 91 info.global_alpha = 0xff; 92 info.mirror = 0; 93 info.zorder = omap_state->zorder; 94 95 memset(&win, 0, sizeof(win)); 96 win.rotation = state->rotation; 97 win.crtc_x = state->crtc_x; 98 win.crtc_y = state->crtc_y; 99 win.crtc_w = state->crtc_w; 100 win.crtc_h = state->crtc_h; 101 102 /* 103 * src values are in Q16 fixed point, convert to integer. 104 * omap_framebuffer_update_scanout() takes adjusted src. 105 */ 106 win.src_x = state->src_x >> 16; 107 win.src_y = state->src_y >> 16; 108 109 switch (state->rotation & 0xf) { 110 case BIT(DRM_ROTATE_90): 111 case BIT(DRM_ROTATE_270): 112 win.src_w = state->src_h >> 16; 113 win.src_h = state->src_w >> 16; 114 break; 115 default: 116 win.src_w = state->src_w >> 16; 117 win.src_h = state->src_h >> 16; 118 break; 119 } 120 121 /* update scanout: */ 122 omap_framebuffer_update_scanout(state->fb, &win, &info); 123 124 DBG("%dx%d -> %dx%d (%d)", info.width, info.height, 125 info.out_width, info.out_height, 126 info.screen_width); 127 DBG("%d,%d %pad %pad", info.pos_x, info.pos_y, 128 &info.paddr, &info.p_uv_addr); 129 130 dispc_ovl_set_channel_out(omap_plane->id, 131 omap_crtc_channel(state->crtc)); 132 133 /* and finally, update omapdss: */ 134 ret = dispc_ovl_setup(omap_plane->id, &info, false, 135 omap_crtc_timings(state->crtc), false); 136 if (WARN_ON(ret)) { 137 dispc_ovl_enable(omap_plane->id, false); 138 return; 139 } 140 141 dispc_ovl_enable(omap_plane->id, true); 142 } 143 144 static void omap_plane_atomic_disable(struct drm_plane *plane, 145 struct drm_plane_state *old_state) 146 { 147 struct omap_plane_state *omap_state = to_omap_plane_state(plane->state); 148 struct omap_plane *omap_plane = to_omap_plane(plane); 149 150 plane->state->rotation = BIT(DRM_ROTATE_0); 151 omap_state->zorder = plane->type == DRM_PLANE_TYPE_PRIMARY 152 ? 0 : omap_plane->id; 153 154 dispc_ovl_enable(omap_plane->id, false); 155 } 156 157 static int omap_plane_atomic_check(struct drm_plane *plane, 158 struct drm_plane_state *state) 159 { 160 struct drm_crtc_state *crtc_state; 161 162 if (!state->crtc) 163 return 0; 164 165 crtc_state = drm_atomic_get_crtc_state(state->state, state->crtc); 166 if (IS_ERR(crtc_state)) 167 return PTR_ERR(crtc_state); 168 169 if (state->crtc_x < 0 || state->crtc_y < 0) 170 return -EINVAL; 171 172 if (state->crtc_x + state->crtc_w > crtc_state->adjusted_mode.hdisplay) 173 return -EINVAL; 174 175 if (state->crtc_y + state->crtc_h > crtc_state->adjusted_mode.vdisplay) 176 return -EINVAL; 177 178 return 0; 179 } 180 181 static const struct drm_plane_helper_funcs omap_plane_helper_funcs = { 182 .prepare_fb = omap_plane_prepare_fb, 183 .cleanup_fb = omap_plane_cleanup_fb, 184 .atomic_check = omap_plane_atomic_check, 185 .atomic_update = omap_plane_atomic_update, 186 .atomic_disable = omap_plane_atomic_disable, 187 }; 188 189 static void omap_plane_reset(struct drm_plane *plane) 190 { 191 struct omap_plane *omap_plane = to_omap_plane(plane); 192 struct omap_plane_state *omap_state; 193 194 if (plane->state && plane->state->fb) 195 drm_framebuffer_unreference(plane->state->fb); 196 197 kfree(plane->state); 198 plane->state = NULL; 199 200 omap_state = kzalloc(sizeof(*omap_state), GFP_KERNEL); 201 if (omap_state == NULL) 202 return; 203 204 /* 205 * Set defaults depending on whether we are a primary or overlay 206 * plane. 207 */ 208 omap_state->zorder = plane->type == DRM_PLANE_TYPE_PRIMARY 209 ? 0 : omap_plane->id; 210 omap_state->base.rotation = BIT(DRM_ROTATE_0); 211 212 plane->state = &omap_state->base; 213 plane->state->plane = plane; 214 } 215 216 static void omap_plane_destroy(struct drm_plane *plane) 217 { 218 struct omap_plane *omap_plane = to_omap_plane(plane); 219 220 DBG("%s", omap_plane->name); 221 222 omap_irq_unregister(plane->dev, &omap_plane->error_irq); 223 224 drm_plane_cleanup(plane); 225 226 kfree(omap_plane); 227 } 228 229 /* helper to install properties which are common to planes and crtcs */ 230 void omap_plane_install_properties(struct drm_plane *plane, 231 struct drm_mode_object *obj) 232 { 233 struct drm_device *dev = plane->dev; 234 struct omap_drm_private *priv = dev->dev_private; 235 236 if (priv->has_dmm) { 237 struct drm_property *prop = dev->mode_config.rotation_property; 238 239 drm_object_attach_property(obj, prop, 0); 240 } 241 242 drm_object_attach_property(obj, priv->zorder_prop, 0); 243 } 244 245 static struct drm_plane_state * 246 omap_plane_atomic_duplicate_state(struct drm_plane *plane) 247 { 248 struct omap_plane_state *state; 249 struct omap_plane_state *copy; 250 251 if (WARN_ON(!plane->state)) 252 return NULL; 253 254 state = to_omap_plane_state(plane->state); 255 copy = kmemdup(state, sizeof(*state), GFP_KERNEL); 256 if (copy == NULL) 257 return NULL; 258 259 __drm_atomic_helper_plane_duplicate_state(plane, ©->base); 260 261 return ©->base; 262 } 263 264 static void omap_plane_atomic_destroy_state(struct drm_plane *plane, 265 struct drm_plane_state *state) 266 { 267 __drm_atomic_helper_plane_destroy_state(plane, state); 268 kfree(to_omap_plane_state(state)); 269 } 270 271 static int omap_plane_atomic_set_property(struct drm_plane *plane, 272 struct drm_plane_state *state, 273 struct drm_property *property, 274 uint64_t val) 275 { 276 struct omap_drm_private *priv = plane->dev->dev_private; 277 struct omap_plane_state *omap_state = to_omap_plane_state(state); 278 279 if (property == priv->zorder_prop) 280 omap_state->zorder = val; 281 else 282 return -EINVAL; 283 284 return 0; 285 } 286 287 static int omap_plane_atomic_get_property(struct drm_plane *plane, 288 const struct drm_plane_state *state, 289 struct drm_property *property, 290 uint64_t *val) 291 { 292 struct omap_drm_private *priv = plane->dev->dev_private; 293 const struct omap_plane_state *omap_state = 294 container_of(state, const struct omap_plane_state, base); 295 296 if (property == priv->zorder_prop) 297 *val = omap_state->zorder; 298 else 299 return -EINVAL; 300 301 return 0; 302 } 303 304 static const struct drm_plane_funcs omap_plane_funcs = { 305 .update_plane = drm_atomic_helper_update_plane, 306 .disable_plane = drm_atomic_helper_disable_plane, 307 .reset = omap_plane_reset, 308 .destroy = omap_plane_destroy, 309 .set_property = drm_atomic_helper_plane_set_property, 310 .atomic_duplicate_state = omap_plane_atomic_duplicate_state, 311 .atomic_destroy_state = omap_plane_atomic_destroy_state, 312 .atomic_set_property = omap_plane_atomic_set_property, 313 .atomic_get_property = omap_plane_atomic_get_property, 314 }; 315 316 static void omap_plane_error_irq(struct omap_drm_irq *irq, uint32_t irqstatus) 317 { 318 struct omap_plane *omap_plane = 319 container_of(irq, struct omap_plane, error_irq); 320 DRM_ERROR_RATELIMITED("%s: errors: %08x\n", omap_plane->name, 321 irqstatus); 322 } 323 324 static const char *plane_names[] = { 325 [OMAP_DSS_GFX] = "gfx", 326 [OMAP_DSS_VIDEO1] = "vid1", 327 [OMAP_DSS_VIDEO2] = "vid2", 328 [OMAP_DSS_VIDEO3] = "vid3", 329 }; 330 331 static const uint32_t error_irqs[] = { 332 [OMAP_DSS_GFX] = DISPC_IRQ_GFX_FIFO_UNDERFLOW, 333 [OMAP_DSS_VIDEO1] = DISPC_IRQ_VID1_FIFO_UNDERFLOW, 334 [OMAP_DSS_VIDEO2] = DISPC_IRQ_VID2_FIFO_UNDERFLOW, 335 [OMAP_DSS_VIDEO3] = DISPC_IRQ_VID3_FIFO_UNDERFLOW, 336 }; 337 338 /* initialize plane */ 339 struct drm_plane *omap_plane_init(struct drm_device *dev, 340 int id, enum drm_plane_type type) 341 { 342 struct omap_drm_private *priv = dev->dev_private; 343 struct drm_plane *plane; 344 struct omap_plane *omap_plane; 345 int ret; 346 347 DBG("%s: type=%d", plane_names[id], type); 348 349 omap_plane = kzalloc(sizeof(*omap_plane), GFP_KERNEL); 350 if (!omap_plane) 351 return ERR_PTR(-ENOMEM); 352 353 omap_plane->nformats = omap_framebuffer_get_formats( 354 omap_plane->formats, ARRAY_SIZE(omap_plane->formats), 355 dss_feat_get_supported_color_modes(id)); 356 omap_plane->id = id; 357 omap_plane->name = plane_names[id]; 358 359 plane = &omap_plane->base; 360 361 omap_plane->error_irq.irqmask = error_irqs[id]; 362 omap_plane->error_irq.irq = omap_plane_error_irq; 363 omap_irq_register(dev, &omap_plane->error_irq); 364 365 ret = drm_universal_plane_init(dev, plane, (1 << priv->num_crtcs) - 1, 366 &omap_plane_funcs, omap_plane->formats, 367 omap_plane->nformats, type); 368 if (ret < 0) 369 goto error; 370 371 drm_plane_helper_add(plane, &omap_plane_helper_funcs); 372 373 omap_plane_install_properties(plane, &plane->base); 374 375 return plane; 376 377 error: 378 omap_irq_unregister(plane->dev, &omap_plane->error_irq); 379 kfree(omap_plane); 380 return NULL; 381 } 382