Tomi Valkeinen | 9169151 | 2012-08-06 14:40:00 +0300 | [diff] [blame] | 1 | /* |
| 2 | * Copyright (C) 2009 Nokia Corporation |
| 3 | * Author: Tomi Valkeinen <tomi.valkeinen@nokia.com> |
| 4 | * |
| 5 | * Some code and ideas taken from drivers/video/omap/ driver |
| 6 | * by Imre Deak. |
| 7 | * |
| 8 | * This program is free software; you can redistribute it and/or modify it |
| 9 | * under the terms of the GNU General Public License version 2 as published by |
| 10 | * the Free Software Foundation. |
| 11 | * |
| 12 | * This program is distributed in the hope that it will be useful, but WITHOUT |
| 13 | * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or |
| 14 | * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for |
| 15 | * more details. |
| 16 | * |
| 17 | * You should have received a copy of the GNU General Public License along with |
| 18 | * this program. If not, see <http://www.gnu.org/licenses/>. |
| 19 | */ |
| 20 | |
| 21 | #define DSS_SUBSYS_NAME "OVERLAY" |
| 22 | |
| 23 | #include <linux/module.h> |
| 24 | #include <linux/err.h> |
| 25 | #include <linux/sysfs.h> |
| 26 | #include <linux/kobject.h> |
| 27 | #include <linux/platform_device.h> |
| 28 | |
| 29 | #include <video/omapdss.h> |
| 30 | |
| 31 | #include "dss.h" |
| 32 | #include "dss_features.h" |
| 33 | |
| 34 | static ssize_t overlay_name_show(struct omap_overlay *ovl, char *buf) |
| 35 | { |
| 36 | return snprintf(buf, PAGE_SIZE, "%s\n", ovl->name); |
| 37 | } |
| 38 | |
| 39 | static ssize_t overlay_manager_show(struct omap_overlay *ovl, char *buf) |
| 40 | { |
| 41 | return snprintf(buf, PAGE_SIZE, "%s\n", |
| 42 | ovl->manager ? ovl->manager->name : "<none>"); |
| 43 | } |
| 44 | |
| 45 | static ssize_t overlay_manager_store(struct omap_overlay *ovl, const char *buf, |
| 46 | size_t size) |
| 47 | { |
| 48 | int i, r; |
| 49 | struct omap_overlay_manager *mgr = NULL; |
| 50 | struct omap_overlay_manager *old_mgr; |
| 51 | int len = size; |
| 52 | |
| 53 | if (buf[size-1] == '\n') |
| 54 | --len; |
| 55 | |
| 56 | if (len > 0) { |
| 57 | for (i = 0; i < omap_dss_get_num_overlay_managers(); ++i) { |
| 58 | mgr = omap_dss_get_overlay_manager(i); |
| 59 | |
| 60 | if (sysfs_streq(buf, mgr->name)) |
| 61 | break; |
| 62 | |
| 63 | mgr = NULL; |
| 64 | } |
| 65 | } |
| 66 | |
| 67 | if (len > 0 && mgr == NULL) |
| 68 | return -EINVAL; |
| 69 | |
| 70 | if (mgr) |
| 71 | DSSDBG("manager %s found\n", mgr->name); |
| 72 | |
| 73 | if (mgr == ovl->manager) |
| 74 | return size; |
| 75 | |
| 76 | old_mgr = ovl->manager; |
| 77 | |
| 78 | r = dispc_runtime_get(); |
| 79 | if (r) |
| 80 | return r; |
| 81 | |
| 82 | /* detach old manager */ |
| 83 | if (old_mgr) { |
| 84 | r = ovl->unset_manager(ovl); |
| 85 | if (r) { |
| 86 | DSSERR("detach failed\n"); |
| 87 | goto err; |
| 88 | } |
| 89 | |
| 90 | r = old_mgr->apply(old_mgr); |
| 91 | if (r) |
| 92 | goto err; |
| 93 | } |
| 94 | |
| 95 | if (mgr) { |
| 96 | r = ovl->set_manager(ovl, mgr); |
| 97 | if (r) { |
| 98 | DSSERR("Failed to attach overlay\n"); |
| 99 | goto err; |
| 100 | } |
| 101 | |
| 102 | r = mgr->apply(mgr); |
| 103 | if (r) |
| 104 | goto err; |
| 105 | } |
| 106 | |
| 107 | dispc_runtime_put(); |
| 108 | |
| 109 | return size; |
| 110 | |
| 111 | err: |
| 112 | dispc_runtime_put(); |
| 113 | return r; |
| 114 | } |
| 115 | |
| 116 | static ssize_t overlay_input_size_show(struct omap_overlay *ovl, char *buf) |
| 117 | { |
| 118 | struct omap_overlay_info info; |
| 119 | |
| 120 | ovl->get_overlay_info(ovl, &info); |
| 121 | |
| 122 | return snprintf(buf, PAGE_SIZE, "%d,%d\n", |
| 123 | info.width, info.height); |
| 124 | } |
| 125 | |
| 126 | static ssize_t overlay_screen_width_show(struct omap_overlay *ovl, char *buf) |
| 127 | { |
| 128 | struct omap_overlay_info info; |
| 129 | |
| 130 | ovl->get_overlay_info(ovl, &info); |
| 131 | |
| 132 | return snprintf(buf, PAGE_SIZE, "%d\n", info.screen_width); |
| 133 | } |
| 134 | |
| 135 | static ssize_t overlay_position_show(struct omap_overlay *ovl, char *buf) |
| 136 | { |
| 137 | struct omap_overlay_info info; |
| 138 | |
| 139 | ovl->get_overlay_info(ovl, &info); |
| 140 | |
| 141 | return snprintf(buf, PAGE_SIZE, "%d,%d\n", |
| 142 | info.pos_x, info.pos_y); |
| 143 | } |
| 144 | |
| 145 | static ssize_t overlay_position_store(struct omap_overlay *ovl, |
| 146 | const char *buf, size_t size) |
| 147 | { |
| 148 | int r; |
| 149 | char *last; |
| 150 | struct omap_overlay_info info; |
| 151 | |
| 152 | ovl->get_overlay_info(ovl, &info); |
| 153 | |
| 154 | info.pos_x = simple_strtoul(buf, &last, 10); |
| 155 | ++last; |
| 156 | if (last - buf >= size) |
| 157 | return -EINVAL; |
| 158 | |
| 159 | info.pos_y = simple_strtoul(last, &last, 10); |
| 160 | |
| 161 | r = ovl->set_overlay_info(ovl, &info); |
| 162 | if (r) |
| 163 | return r; |
| 164 | |
| 165 | if (ovl->manager) { |
| 166 | r = ovl->manager->apply(ovl->manager); |
| 167 | if (r) |
| 168 | return r; |
| 169 | } |
| 170 | |
| 171 | return size; |
| 172 | } |
| 173 | |
| 174 | static ssize_t overlay_output_size_show(struct omap_overlay *ovl, char *buf) |
| 175 | { |
| 176 | struct omap_overlay_info info; |
| 177 | |
| 178 | ovl->get_overlay_info(ovl, &info); |
| 179 | |
| 180 | return snprintf(buf, PAGE_SIZE, "%d,%d\n", |
| 181 | info.out_width, info.out_height); |
| 182 | } |
| 183 | |
| 184 | static ssize_t overlay_output_size_store(struct omap_overlay *ovl, |
| 185 | const char *buf, size_t size) |
| 186 | { |
| 187 | int r; |
| 188 | char *last; |
| 189 | struct omap_overlay_info info; |
| 190 | |
| 191 | ovl->get_overlay_info(ovl, &info); |
| 192 | |
| 193 | info.out_width = simple_strtoul(buf, &last, 10); |
| 194 | ++last; |
| 195 | if (last - buf >= size) |
| 196 | return -EINVAL; |
| 197 | |
| 198 | info.out_height = simple_strtoul(last, &last, 10); |
| 199 | |
| 200 | r = ovl->set_overlay_info(ovl, &info); |
| 201 | if (r) |
| 202 | return r; |
| 203 | |
| 204 | if (ovl->manager) { |
| 205 | r = ovl->manager->apply(ovl->manager); |
| 206 | if (r) |
| 207 | return r; |
| 208 | } |
| 209 | |
| 210 | return size; |
| 211 | } |
| 212 | |
| 213 | static ssize_t overlay_enabled_show(struct omap_overlay *ovl, char *buf) |
| 214 | { |
| 215 | return snprintf(buf, PAGE_SIZE, "%d\n", ovl->is_enabled(ovl)); |
| 216 | } |
| 217 | |
| 218 | static ssize_t overlay_enabled_store(struct omap_overlay *ovl, const char *buf, |
| 219 | size_t size) |
| 220 | { |
| 221 | int r; |
| 222 | bool enable; |
| 223 | |
| 224 | r = strtobool(buf, &enable); |
| 225 | if (r) |
| 226 | return r; |
| 227 | |
| 228 | if (enable) |
| 229 | r = ovl->enable(ovl); |
| 230 | else |
| 231 | r = ovl->disable(ovl); |
| 232 | |
| 233 | if (r) |
| 234 | return r; |
| 235 | |
| 236 | return size; |
| 237 | } |
| 238 | |
| 239 | static ssize_t overlay_global_alpha_show(struct omap_overlay *ovl, char *buf) |
| 240 | { |
| 241 | struct omap_overlay_info info; |
| 242 | |
| 243 | ovl->get_overlay_info(ovl, &info); |
| 244 | |
| 245 | return snprintf(buf, PAGE_SIZE, "%d\n", |
| 246 | info.global_alpha); |
| 247 | } |
| 248 | |
| 249 | static ssize_t overlay_global_alpha_store(struct omap_overlay *ovl, |
| 250 | const char *buf, size_t size) |
| 251 | { |
| 252 | int r; |
| 253 | u8 alpha; |
| 254 | struct omap_overlay_info info; |
| 255 | |
| 256 | if ((ovl->caps & OMAP_DSS_OVL_CAP_GLOBAL_ALPHA) == 0) |
| 257 | return -ENODEV; |
| 258 | |
| 259 | r = kstrtou8(buf, 0, &alpha); |
| 260 | if (r) |
| 261 | return r; |
| 262 | |
| 263 | ovl->get_overlay_info(ovl, &info); |
| 264 | |
| 265 | info.global_alpha = alpha; |
| 266 | |
| 267 | r = ovl->set_overlay_info(ovl, &info); |
| 268 | if (r) |
| 269 | return r; |
| 270 | |
| 271 | if (ovl->manager) { |
| 272 | r = ovl->manager->apply(ovl->manager); |
| 273 | if (r) |
| 274 | return r; |
| 275 | } |
| 276 | |
| 277 | return size; |
| 278 | } |
| 279 | |
| 280 | static ssize_t overlay_pre_mult_alpha_show(struct omap_overlay *ovl, |
| 281 | char *buf) |
| 282 | { |
| 283 | struct omap_overlay_info info; |
| 284 | |
| 285 | ovl->get_overlay_info(ovl, &info); |
| 286 | |
| 287 | return snprintf(buf, PAGE_SIZE, "%d\n", |
| 288 | info.pre_mult_alpha); |
| 289 | } |
| 290 | |
| 291 | static ssize_t overlay_pre_mult_alpha_store(struct omap_overlay *ovl, |
| 292 | const char *buf, size_t size) |
| 293 | { |
| 294 | int r; |
| 295 | u8 alpha; |
| 296 | struct omap_overlay_info info; |
| 297 | |
| 298 | if ((ovl->caps & OMAP_DSS_OVL_CAP_PRE_MULT_ALPHA) == 0) |
| 299 | return -ENODEV; |
| 300 | |
| 301 | r = kstrtou8(buf, 0, &alpha); |
| 302 | if (r) |
| 303 | return r; |
| 304 | |
| 305 | ovl->get_overlay_info(ovl, &info); |
| 306 | |
| 307 | info.pre_mult_alpha = alpha; |
| 308 | |
| 309 | r = ovl->set_overlay_info(ovl, &info); |
| 310 | if (r) |
| 311 | return r; |
| 312 | |
| 313 | if (ovl->manager) { |
| 314 | r = ovl->manager->apply(ovl->manager); |
| 315 | if (r) |
| 316 | return r; |
| 317 | } |
| 318 | |
| 319 | return size; |
| 320 | } |
| 321 | |
| 322 | static ssize_t overlay_zorder_show(struct omap_overlay *ovl, char *buf) |
| 323 | { |
| 324 | struct omap_overlay_info info; |
| 325 | |
| 326 | ovl->get_overlay_info(ovl, &info); |
| 327 | |
| 328 | return snprintf(buf, PAGE_SIZE, "%d\n", info.zorder); |
| 329 | } |
| 330 | |
| 331 | static ssize_t overlay_zorder_store(struct omap_overlay *ovl, |
| 332 | const char *buf, size_t size) |
| 333 | { |
| 334 | int r; |
| 335 | u8 zorder; |
| 336 | struct omap_overlay_info info; |
| 337 | |
| 338 | if ((ovl->caps & OMAP_DSS_OVL_CAP_ZORDER) == 0) |
| 339 | return -ENODEV; |
| 340 | |
| 341 | r = kstrtou8(buf, 0, &zorder); |
| 342 | if (r) |
| 343 | return r; |
| 344 | |
| 345 | ovl->get_overlay_info(ovl, &info); |
| 346 | |
| 347 | info.zorder = zorder; |
| 348 | |
| 349 | r = ovl->set_overlay_info(ovl, &info); |
| 350 | if (r) |
| 351 | return r; |
| 352 | |
| 353 | if (ovl->manager) { |
| 354 | r = ovl->manager->apply(ovl->manager); |
| 355 | if (r) |
| 356 | return r; |
| 357 | } |
| 358 | |
| 359 | return size; |
| 360 | } |
| 361 | |
| 362 | struct overlay_attribute { |
| 363 | struct attribute attr; |
| 364 | ssize_t (*show)(struct omap_overlay *, char *); |
| 365 | ssize_t (*store)(struct omap_overlay *, const char *, size_t); |
| 366 | }; |
| 367 | |
| 368 | #define OVERLAY_ATTR(_name, _mode, _show, _store) \ |
| 369 | struct overlay_attribute overlay_attr_##_name = \ |
| 370 | __ATTR(_name, _mode, _show, _store) |
| 371 | |
| 372 | static OVERLAY_ATTR(name, S_IRUGO, overlay_name_show, NULL); |
| 373 | static OVERLAY_ATTR(manager, S_IRUGO|S_IWUSR, |
| 374 | overlay_manager_show, overlay_manager_store); |
| 375 | static OVERLAY_ATTR(input_size, S_IRUGO, overlay_input_size_show, NULL); |
| 376 | static OVERLAY_ATTR(screen_width, S_IRUGO, overlay_screen_width_show, NULL); |
| 377 | static OVERLAY_ATTR(position, S_IRUGO|S_IWUSR, |
| 378 | overlay_position_show, overlay_position_store); |
| 379 | static OVERLAY_ATTR(output_size, S_IRUGO|S_IWUSR, |
| 380 | overlay_output_size_show, overlay_output_size_store); |
| 381 | static OVERLAY_ATTR(enabled, S_IRUGO|S_IWUSR, |
| 382 | overlay_enabled_show, overlay_enabled_store); |
| 383 | static OVERLAY_ATTR(global_alpha, S_IRUGO|S_IWUSR, |
| 384 | overlay_global_alpha_show, overlay_global_alpha_store); |
| 385 | static OVERLAY_ATTR(pre_mult_alpha, S_IRUGO|S_IWUSR, |
| 386 | overlay_pre_mult_alpha_show, |
| 387 | overlay_pre_mult_alpha_store); |
| 388 | static OVERLAY_ATTR(zorder, S_IRUGO|S_IWUSR, |
| 389 | overlay_zorder_show, overlay_zorder_store); |
| 390 | |
| 391 | static struct attribute *overlay_sysfs_attrs[] = { |
| 392 | &overlay_attr_name.attr, |
| 393 | &overlay_attr_manager.attr, |
| 394 | &overlay_attr_input_size.attr, |
| 395 | &overlay_attr_screen_width.attr, |
| 396 | &overlay_attr_position.attr, |
| 397 | &overlay_attr_output_size.attr, |
| 398 | &overlay_attr_enabled.attr, |
| 399 | &overlay_attr_global_alpha.attr, |
| 400 | &overlay_attr_pre_mult_alpha.attr, |
| 401 | &overlay_attr_zorder.attr, |
| 402 | NULL |
| 403 | }; |
| 404 | |
| 405 | static ssize_t overlay_attr_show(struct kobject *kobj, struct attribute *attr, |
| 406 | char *buf) |
| 407 | { |
| 408 | struct omap_overlay *overlay; |
| 409 | struct overlay_attribute *overlay_attr; |
| 410 | |
| 411 | overlay = container_of(kobj, struct omap_overlay, kobj); |
| 412 | overlay_attr = container_of(attr, struct overlay_attribute, attr); |
| 413 | |
| 414 | if (!overlay_attr->show) |
| 415 | return -ENOENT; |
| 416 | |
| 417 | return overlay_attr->show(overlay, buf); |
| 418 | } |
| 419 | |
| 420 | static ssize_t overlay_attr_store(struct kobject *kobj, struct attribute *attr, |
| 421 | const char *buf, size_t size) |
| 422 | { |
| 423 | struct omap_overlay *overlay; |
| 424 | struct overlay_attribute *overlay_attr; |
| 425 | |
| 426 | overlay = container_of(kobj, struct omap_overlay, kobj); |
| 427 | overlay_attr = container_of(attr, struct overlay_attribute, attr); |
| 428 | |
| 429 | if (!overlay_attr->store) |
| 430 | return -ENOENT; |
| 431 | |
| 432 | return overlay_attr->store(overlay, buf, size); |
| 433 | } |
| 434 | |
| 435 | static const struct sysfs_ops overlay_sysfs_ops = { |
| 436 | .show = overlay_attr_show, |
| 437 | .store = overlay_attr_store, |
| 438 | }; |
| 439 | |
| 440 | static struct kobj_type overlay_ktype = { |
| 441 | .sysfs_ops = &overlay_sysfs_ops, |
| 442 | .default_attrs = overlay_sysfs_attrs, |
| 443 | }; |
| 444 | |
| 445 | int dss_overlay_kobj_init(struct omap_overlay *ovl, |
| 446 | struct platform_device *pdev) |
| 447 | { |
| 448 | return kobject_init_and_add(&ovl->kobj, &overlay_ktype, |
| 449 | &pdev->dev.kobj, "overlay%d", ovl->id); |
| 450 | } |
| 451 | |
| 452 | void dss_overlay_kobj_uninit(struct omap_overlay *ovl) |
| 453 | { |
| 454 | kobject_del(&ovl->kobj); |
| 455 | kobject_put(&ovl->kobj); |
| 456 | } |