Pileus Git - ~andy/linux/blob - drivers/video/omap2/dss/manager-sysfs.c

   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 "MANAGER"
  22
  23 #include <linux/kernel.h>
  24 #include <linux/slab.h>
  25 #include <linux/module.h>
  26 #include <linux/platform_device.h>
  27 #include <linux/jiffies.h>
  28
  29 #include <video/omapdss.h>
  30
  31 #include "dss.h"
  32 #include "dss_features.h"
  33
  34 static ssize_t manager_name_show(struct omap_overlay_manager *mgr, char *buf)
  35 {
  36         return snprintf(buf, PAGE_SIZE, "%s\n", mgr->name);
  37 }
  38
  39 static ssize_t manager_display_show(struct omap_overlay_manager *mgr, char *buf)
  40 {
  41         return snprintf(buf, PAGE_SIZE, "%s\n",
  42                         mgr->device ? mgr->device->name : "<none>");
  43 }
  44
  45 static ssize_t manager_display_store(struct omap_overlay_manager *mgr,
  46                 const char *buf, size_t size)
  47 {
  48         int r = 0;
  49         size_t len = size;
  50         struct omap_dss_device *dssdev = NULL;
  51
  52         int match(struct omap_dss_device *dssdev, void *data)
  53         {
  54                 const char *str = data;
  55                 return sysfs_streq(dssdev->name, str);
  56         }
  57
  58         if (buf[size-1] == '\n')
  59                 --len;
  60
  61         if (len > 0)
  62                 dssdev = omap_dss_find_device((void *)buf, match);
  63
  64         if (len > 0 && dssdev == NULL)
  65                 return -EINVAL;
  66
  67         if (dssdev)
  68                 DSSDBG("display %s found\n", dssdev->name);
  69
  70         if (mgr->device) {
  71                 r = mgr->unset_device(mgr);
  72                 if (r) {
  73                         DSSERR("failed to unset display\n");
  74                         goto put_device;
  75                 }
  76         }
  77
  78         if (dssdev) {
  79                 r = mgr->set_device(mgr, dssdev);
  80                 if (r) {
  81                         DSSERR("failed to set manager\n");
  82                         goto put_device;
  83                 }
  84
  85                 r = mgr->apply(mgr);
  86                 if (r) {
  87                         DSSERR("failed to apply dispc config\n");
  88                         goto put_device;
  89                 }
  90         }
  91
  92 put_device:
  93         if (dssdev)
  94                 omap_dss_put_device(dssdev);
  95
  96         return r ? r : size;
  97 }
  98
  99 static ssize_t manager_default_color_show(struct omap_overlay_manager *mgr,
 100                                           char *buf)
 101 {
 102         struct omap_overlay_manager_info info;
 103
 104         mgr->get_manager_info(mgr, &info);
 105
 106         return snprintf(buf, PAGE_SIZE, "%#x\n", info.default_color);
 107 }
 108
 109 static ssize_t manager_default_color_store(struct omap_overlay_manager *mgr,
 110                                            const char *buf, size_t size)
 111 {
 112         struct omap_overlay_manager_info info;
 113         u32 color;
 114         int r;
 115
 116         r = kstrtouint(buf, 0, &color);
 117         if (r)
 118                 return r;
 119
 120         mgr->get_manager_info(mgr, &info);
 121
 122         info.default_color = color;
 123
 124         r = mgr->set_manager_info(mgr, &info);
 125         if (r)
 126                 return r;
 127
 128         r = mgr->apply(mgr);
 129         if (r)
 130                 return r;
 131
 132         return size;
 133 }
 134
 135 static const char *trans_key_type_str[] = {
 136         "gfx-destination",
 137         "video-source",
 138 };
 139
 140 static ssize_t manager_trans_key_type_show(struct omap_overlay_manager *mgr,
 141                                            char *buf)
 142 {
 143         enum omap_dss_trans_key_type key_type;
 144         struct omap_overlay_manager_info info;
 145
 146         mgr->get_manager_info(mgr, &info);
 147
 148         key_type = info.trans_key_type;
 149         BUG_ON(key_type >= ARRAY_SIZE(trans_key_type_str));
 150
 151         return snprintf(buf, PAGE_SIZE, "%s\n", trans_key_type_str[key_type]);
 152 }
 153
 154 static ssize_t manager_trans_key_type_store(struct omap_overlay_manager *mgr,
 155                                             const char *buf, size_t size)
 156 {
 157         enum omap_dss_trans_key_type key_type;
 158         struct omap_overlay_manager_info info;
 159         int r;
 160
 161         for (key_type = OMAP_DSS_COLOR_KEY_GFX_DST;
 162                         key_type < ARRAY_SIZE(trans_key_type_str); key_type++) {
 163                 if (sysfs_streq(buf, trans_key_type_str[key_type]))
 164                         break;
 165         }
 166
 167         if (key_type == ARRAY_SIZE(trans_key_type_str))
 168                 return -EINVAL;
 169
 170         mgr->get_manager_info(mgr, &info);
 171
 172         info.trans_key_type = key_type;
 173
 174         r = mgr->set_manager_info(mgr, &info);
 175         if (r)
 176                 return r;
 177
 178         r = mgr->apply(mgr);
 179         if (r)
 180                 return r;
 181
 182         return size;
 183 }
 184
 185 static ssize_t manager_trans_key_value_show(struct omap_overlay_manager *mgr,
 186                                             char *buf)
 187 {
 188         struct omap_overlay_manager_info info;
 189
 190         mgr->get_manager_info(mgr, &info);
 191
 192         return snprintf(buf, PAGE_SIZE, "%#x\n", info.trans_key);
 193 }
 194
 195 static ssize_t manager_trans_key_value_store(struct omap_overlay_manager *mgr,
 196                                              const char *buf, size_t size)
 197 {
 198         struct omap_overlay_manager_info info;
 199         u32 key_value;
 200         int r;
 201
 202         r = kstrtouint(buf, 0, &key_value);
 203         if (r)
 204                 return r;
 205
 206         mgr->get_manager_info(mgr, &info);
 207
 208         info.trans_key = key_value;
 209
 210         r = mgr->set_manager_info(mgr, &info);
 211         if (r)
 212                 return r;
 213
 214         r = mgr->apply(mgr);
 215         if (r)
 216                 return r;
 217
 218         return size;
 219 }
 220
 221 static ssize_t manager_trans_key_enabled_show(struct omap_overlay_manager *mgr,
 222                                               char *buf)
 223 {
 224         struct omap_overlay_manager_info info;
 225
 226         mgr->get_manager_info(mgr, &info);
 227
 228         return snprintf(buf, PAGE_SIZE, "%d\n", info.trans_enabled);
 229 }
 230
 231 static ssize_t manager_trans_key_enabled_store(struct omap_overlay_manager *mgr,
 232                                                const char *buf, size_t size)
 233 {
 234         struct omap_overlay_manager_info info;
 235         bool enable;
 236         int r;
 237
 238         r = strtobool(buf, &enable);
 239         if (r)
 240                 return r;
 241
 242         mgr->get_manager_info(mgr, &info);
 243
 244         info.trans_enabled = enable;
 245
 246         r = mgr->set_manager_info(mgr, &info);
 247         if (r)
 248                 return r;
 249
 250         r = mgr->apply(mgr);
 251         if (r)
 252                 return r;
 253
 254         return size;
 255 }
 256
 257 static ssize_t manager_alpha_blending_enabled_show(
 258                 struct omap_overlay_manager *mgr, char *buf)
 259 {
 260         struct omap_overlay_manager_info info;
 261
 262         mgr->get_manager_info(mgr, &info);
 263
 264         WARN_ON(!dss_has_feature(FEAT_ALPHA_FIXED_ZORDER));
 265
 266         return snprintf(buf, PAGE_SIZE, "%d\n",
 267                 info.partial_alpha_enabled);
 268 }
 269
 270 static ssize_t manager_alpha_blending_enabled_store(
 271                 struct omap_overlay_manager *mgr,
 272                 const char *buf, size_t size)
 273 {
 274         struct omap_overlay_manager_info info;
 275         bool enable;
 276         int r;
 277
 278         WARN_ON(!dss_has_feature(FEAT_ALPHA_FIXED_ZORDER));
 279
 280         r = strtobool(buf, &enable);
 281         if (r)
 282                 return r;
 283
 284         mgr->get_manager_info(mgr, &info);
 285
 286         info.partial_alpha_enabled = enable;
 287
 288         r = mgr->set_manager_info(mgr, &info);
 289         if (r)
 290                 return r;
 291
 292         r = mgr->apply(mgr);
 293         if (r)
 294                 return r;
 295
 296         return size;
 297 }
 298
 299 static ssize_t manager_cpr_enable_show(struct omap_overlay_manager *mgr,
 300                 char *buf)
 301 {
 302         struct omap_overlay_manager_info info;
 303
 304         mgr->get_manager_info(mgr, &info);
 305
 306         return snprintf(buf, PAGE_SIZE, "%d\n", info.cpr_enable);
 307 }
 308
 309 static ssize_t manager_cpr_enable_store(struct omap_overlay_manager *mgr,
 310                 const char *buf, size_t size)
 311 {
 312         struct omap_overlay_manager_info info;
 313         int r;
 314         bool enable;
 315
 316         if (!dss_has_feature(FEAT_CPR))
 317                 return -ENODEV;
 318
 319         r = strtobool(buf, &enable);
 320         if (r)
 321                 return r;
 322
 323         mgr->get_manager_info(mgr, &info);
 324
 325         if (info.cpr_enable == enable)
 326                 return size;
 327
 328         info.cpr_enable = enable;
 329
 330         r = mgr->set_manager_info(mgr, &info);
 331         if (r)
 332                 return r;
 333
 334         r = mgr->apply(mgr);
 335         if (r)
 336                 return r;
 337
 338         return size;
 339 }
 340
 341 static ssize_t manager_cpr_coef_show(struct omap_overlay_manager *mgr,
 342                 char *buf)
 343 {
 344         struct omap_overlay_manager_info info;
 345
 346         mgr->get_manager_info(mgr, &info);
 347
 348         return snprintf(buf, PAGE_SIZE,
 349                         "%d %d %d %d %d %d %d %d %d\n",
 350                         info.cpr_coefs.rr,
 351                         info.cpr_coefs.rg,
 352                         info.cpr_coefs.rb,
 353                         info.cpr_coefs.gr,
 354                         info.cpr_coefs.gg,
 355                         info.cpr_coefs.gb,
 356                         info.cpr_coefs.br,
 357                         info.cpr_coefs.bg,
 358                         info.cpr_coefs.bb);
 359 }
 360
 361 static ssize_t manager_cpr_coef_store(struct omap_overlay_manager *mgr,
 362                 const char *buf, size_t size)
 363 {
 364         struct omap_overlay_manager_info info;
 365         struct omap_dss_cpr_coefs coefs;
 366         int r, i;
 367         s16 *arr;
 368
 369         if (!dss_has_feature(FEAT_CPR))
 370                 return -ENODEV;
 371
 372         if (sscanf(buf, "%hd %hd %hd %hd %hd %hd %hd %hd %hd",
 373                                 &coefs.rr, &coefs.rg, &coefs.rb,
 374                                 &coefs.gr, &coefs.gg, &coefs.gb,
 375                                 &coefs.br, &coefs.bg, &coefs.bb) != 9)
 376                 return -EINVAL;
 377
 378         arr = (s16[]){ coefs.rr, coefs.rg, coefs.rb,
 379                 coefs.gr, coefs.gg, coefs.gb,
 380                 coefs.br, coefs.bg, coefs.bb };
 381
 382         for (i = 0; i < 9; ++i) {
 383                 if (arr[i] < -512 || arr[i] > 511)
 384                         return -EINVAL;
 385         }
 386
 387         mgr->get_manager_info(mgr, &info);
 388
 389         info.cpr_coefs = coefs;
 390
 391         r = mgr->set_manager_info(mgr, &info);
 392         if (r)
 393                 return r;
 394
 395         r = mgr->apply(mgr);
 396         if (r)
 397                 return r;
 398
 399         return size;
 400 }
 401
 402 struct manager_attribute {
 403         struct attribute attr;
 404         ssize_t (*show)(struct omap_overlay_manager *, char *);
 405         ssize_t (*store)(struct omap_overlay_manager *, const char *, size_t);
 406 };
 407
 408 #define MANAGER_ATTR(_name, _mode, _show, _store) \
 409         struct manager_attribute manager_attr_##_name = \
 410         __ATTR(_name, _mode, _show, _store)
 411
 412 static MANAGER_ATTR(name, S_IRUGO, manager_name_show, NULL);
 413 static MANAGER_ATTR(display, S_IRUGO|S_IWUSR,
 414                 manager_display_show, manager_display_store);
 415 static MANAGER_ATTR(default_color, S_IRUGO|S_IWUSR,
 416                 manager_default_color_show, manager_default_color_store);
 417 static MANAGER_ATTR(trans_key_type, S_IRUGO|S_IWUSR,
 418                 manager_trans_key_type_show, manager_trans_key_type_store);
 419 static MANAGER_ATTR(trans_key_value, S_IRUGO|S_IWUSR,
 420                 manager_trans_key_value_show, manager_trans_key_value_store);
 421 static MANAGER_ATTR(trans_key_enabled, S_IRUGO|S_IWUSR,
 422                 manager_trans_key_enabled_show,
 423                 manager_trans_key_enabled_store);
 424 static MANAGER_ATTR(alpha_blending_enabled, S_IRUGO|S_IWUSR,
 425                 manager_alpha_blending_enabled_show,
 426                 manager_alpha_blending_enabled_store);
 427 static MANAGER_ATTR(cpr_enable, S_IRUGO|S_IWUSR,
 428                 manager_cpr_enable_show,
 429                 manager_cpr_enable_store);
 430 static MANAGER_ATTR(cpr_coef, S_IRUGO|S_IWUSR,
 431                 manager_cpr_coef_show,
 432                 manager_cpr_coef_store);
 433
 434
 435 static struct attribute *manager_sysfs_attrs[] = {
 436         &manager_attr_name.attr,
 437         &manager_attr_display.attr,
 438         &manager_attr_default_color.attr,
 439         &manager_attr_trans_key_type.attr,
 440         &manager_attr_trans_key_value.attr,
 441         &manager_attr_trans_key_enabled.attr,
 442         &manager_attr_alpha_blending_enabled.attr,
 443         &manager_attr_cpr_enable.attr,
 444         &manager_attr_cpr_coef.attr,
 445         NULL
 446 };
 447
 448 static ssize_t manager_attr_show(struct kobject *kobj, struct attribute *attr,
 449                 char *buf)
 450 {
 451         struct omap_overlay_manager *manager;
 452         struct manager_attribute *manager_attr;
 453
 454         manager = container_of(kobj, struct omap_overlay_manager, kobj);
 455         manager_attr = container_of(attr, struct manager_attribute, attr);
 456
 457         if (!manager_attr->show)
 458                 return -ENOENT;
 459
 460         return manager_attr->show(manager, buf);
 461 }
 462
 463 static ssize_t manager_attr_store(struct kobject *kobj, struct attribute *attr,
 464                 const char *buf, size_t size)
 465 {
 466         struct omap_overlay_manager *manager;
 467         struct manager_attribute *manager_attr;
 468
 469         manager = container_of(kobj, struct omap_overlay_manager, kobj);
 470         manager_attr = container_of(attr, struct manager_attribute, attr);
 471
 472         if (!manager_attr->store)
 473                 return -ENOENT;
 474
 475         return manager_attr->store(manager, buf, size);
 476 }
 477
 478 static const struct sysfs_ops manager_sysfs_ops = {
 479         .show = manager_attr_show,
 480         .store = manager_attr_store,
 481 };
 482
 483 static struct kobj_type manager_ktype = {
 484         .sysfs_ops = &manager_sysfs_ops,
 485         .default_attrs = manager_sysfs_attrs,
 486 };
 487
 488 int dss_manager_kobj_init(struct omap_overlay_manager *mgr,
 489                 struct platform_device *pdev)
 490 {
 491         return kobject_init_and_add(&mgr->kobj, &manager_ktype,
 492                         &pdev->dev.kobj, "manager%d", mgr->id);
 493 }
 494
 495 void dss_manager_kobj_uninit(struct omap_overlay_manager *mgr)
 496 {
 497         kobject_del(&mgr->kobj);
 498         kobject_put(&mgr->kobj);
 499 }