drivers/gpu/drm/gma500/mdfld_dsi_output.c

   1 /*
   2  * Copyright © 2010 Intel Corporation
   3  *
   4  * Permission is hereby granted, free of charge, to any person obtaining a
   5  * copy of this software and associated documentation files (the "Software"),
   6  * to deal in the Software without restriction, including without limitation
   7  * the rights to use, copy, modify, merge, publish, distribute, sublicense,
   8  * and/or sell copies of the Software, and to permit persons to whom the
   9  * Software is furnished to do so, subject to the following conditions:
  10  *
  11  * The above copyright notice and this permission notice (including the next
  12  * paragraph) shall be included in all copies or substantial portions of the
  13  * Software.
  14  *
  15  * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
  16  * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
  17  * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.  IN NO EVENT SHALL
  18  * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
  19  * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
  20  * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
  21  * DEALINGS IN THE SOFTWARE.
  22  *
  23  * Authors:
  24  * jim liu <jim.liu@intel.com>
  25  * Jackie Li<yaodong.li@intel.com>
  26  */
  27
  28 #include <linux/module.h>
  29
  30 #include "mdfld_dsi_output.h"
  31 #include "mdfld_dsi_dpi.h"
  32 #include "mdfld_output.h"
  33 #include "mdfld_dsi_pkg_sender.h"
  34 #include "tc35876x-dsi-lvds.h"
  35 #include <linux/pm_runtime.h>
  36 #include <asm/intel_scu_ipc.h>
  37
  38 /* get the LABC from command line. */
  39 static int LABC_control = 1;
  40
  41 #ifdef MODULE
  42 module_param(LABC_control, int, 0644);
  43 #else
  44
  45 static int __init parse_LABC_control(char *arg)
  46 {
  47         /* LABC control can be passed in as a cmdline parameter */
  48         /* to enable this feature add LABC=1 to cmdline */
  49         /* to disable this feature add LABC=0 to cmdline */
  50         if (!arg)
  51                 return -EINVAL;
  52
  53         if (!strcasecmp(arg, "0"))
  54                 LABC_control = 0;
  55         else if (!strcasecmp(arg, "1"))
  56                 LABC_control = 1;
  57
  58         return 0;
  59 }
  60 early_param("LABC", parse_LABC_control);
  61 #endif
  62
  63 /**
  64  * Check and see if the generic control or data buffer is empty and ready.
  65  */
  66 void mdfld_dsi_gen_fifo_ready(struct drm_device *dev, u32 gen_fifo_stat_reg,
  67                                                         u32 fifo_stat)
  68 {
  69         u32 GEN_BF_time_out_count;
  70
  71         /* Check MIPI Adatper command registers */
  72         for (GEN_BF_time_out_count = 0;
  73                         GEN_BF_time_out_count < GEN_FB_TIME_OUT;
  74                         GEN_BF_time_out_count++) {
  75                 if ((REG_READ(gen_fifo_stat_reg) & fifo_stat) == fifo_stat)
  76                         break;
  77                 udelay(100);
  78         }
  79
  80         if (GEN_BF_time_out_count == GEN_FB_TIME_OUT)
  81                 DRM_ERROR("mdfld_dsi_gen_fifo_ready, Timeout. gen_fifo_stat_reg = 0x%x.\n",
  82                                         gen_fifo_stat_reg);
  83 }
  84
  85 /**
  86  * Manage the DSI MIPI keyboard and display brightness.
  87  * FIXME: this is exported to OSPM code. should work out an specific
  88  * display interface to OSPM.
  89  */
  90
  91 void mdfld_dsi_brightness_init(struct mdfld_dsi_config *dsi_config, int pipe)
  92 {
  93         struct mdfld_dsi_pkg_sender *sender =
  94                                 mdfld_dsi_get_pkg_sender(dsi_config);
  95         struct drm_device *dev;
  96         struct drm_psb_private *dev_priv;
  97         u32 gen_ctrl_val;
  98
  99         if (!sender) {
 100                 DRM_ERROR("No sender found\n");
 101                 return;
 102         }
 103
 104         dev = sender->dev;
 105         dev_priv = dev->dev_private;
 106
 107         /* Set default display backlight value to 85% (0xd8)*/
 108         mdfld_dsi_send_mcs_short(sender, write_display_brightness, 0xd8, 1,
 109                                 true);
 110
 111         /* Set minimum brightness setting of CABC function to 20% (0x33)*/
 112         mdfld_dsi_send_mcs_short(sender, write_cabc_min_bright, 0x33, 1, true);
 113
 114         /* Enable backlight or/and LABC */
 115         gen_ctrl_val = BRIGHT_CNTL_BLOCK_ON | DISPLAY_DIMMING_ON |
 116                                                                 BACKLIGHT_ON;
 117         if (LABC_control == 1)
 118                 gen_ctrl_val |= DISPLAY_DIMMING_ON | DISPLAY_BRIGHTNESS_AUTO
 119                                                                 | GAMMA_AUTO;
 120
 121         if (LABC_control == 1)
 122                 gen_ctrl_val |= AMBIENT_LIGHT_SENSE_ON;
 123
 124         dev_priv->mipi_ctrl_display = gen_ctrl_val;
 125
 126         mdfld_dsi_send_mcs_short(sender, write_ctrl_display, (u8)gen_ctrl_val,
 127                                 1, true);
 128
 129         mdfld_dsi_send_mcs_short(sender, write_ctrl_cabc, UI_IMAGE, 1, true);
 130 }
 131
 132 void mdfld_dsi_brightness_control(struct drm_device *dev, int pipe, int level)
 133 {
 134         struct mdfld_dsi_pkg_sender *sender;
 135         struct drm_psb_private *dev_priv;
 136         struct mdfld_dsi_config *dsi_config;
 137         u32 gen_ctrl_val = 0;
 138         int p_type = TMD_VID;
 139
 140         if (!dev || (pipe != 0 && pipe != 2)) {
 141                 DRM_ERROR("Invalid parameter\n");
 142                 return;
 143         }
 144
 145         p_type = mdfld_get_panel_type(dev, 0);
 146
 147         dev_priv = dev->dev_private;
 148
 149         if (pipe)
 150                 dsi_config = dev_priv->dsi_configs[1];
 151         else
 152                 dsi_config = dev_priv->dsi_configs[0];
 153
 154         sender = mdfld_dsi_get_pkg_sender(dsi_config);
 155
 156         if (!sender) {
 157                 DRM_ERROR("No sender found\n");
 158                 return;
 159         }
 160
 161         gen_ctrl_val = (level * 0xff / MDFLD_DSI_BRIGHTNESS_MAX_LEVEL) & 0xff;
 162
 163         dev_dbg(sender->dev->dev, "pipe = %d, gen_ctrl_val = %d.\n",
 164                                                         pipe, gen_ctrl_val);
 165
 166         if (p_type == TMD_VID) {
 167                 /* Set display backlight value */
 168                 mdfld_dsi_send_mcs_short(sender, tmd_write_display_brightness,
 169                                         (u8)gen_ctrl_val, 1, true);
 170         } else {
 171                 /* Set display backlight value */
 172                 mdfld_dsi_send_mcs_short(sender, write_display_brightness,
 173                                         (u8)gen_ctrl_val, 1, true);
 174
 175                 /* Enable backlight control */
 176                 if (level == 0)
 177                         gen_ctrl_val = 0;
 178                 else
 179                         gen_ctrl_val = dev_priv->mipi_ctrl_display;
 180
 181                 mdfld_dsi_send_mcs_short(sender, write_ctrl_display,
 182                                         (u8)gen_ctrl_val, 1, true);
 183         }
 184 }
 185
 186 static int mdfld_dsi_get_panel_status(struct mdfld_dsi_config *dsi_config,
 187                                 u8 dcs, u32 *data, bool hs)
 188 {
 189         struct mdfld_dsi_pkg_sender *sender
 190                 = mdfld_dsi_get_pkg_sender(dsi_config);
 191
 192         if (!sender || !data) {
 193                 DRM_ERROR("Invalid parameter\n");
 194                 return -EINVAL;
 195         }
 196
 197         return mdfld_dsi_read_mcs(sender, dcs, data, 1, hs);
 198 }
 199
 200 int mdfld_dsi_get_power_mode(struct mdfld_dsi_config *dsi_config, u32 *mode,
 201                         bool hs)
 202 {
 203         if (!dsi_config || !mode) {
 204                 DRM_ERROR("Invalid parameter\n");
 205                 return -EINVAL;
 206         }
 207
 208         return mdfld_dsi_get_panel_status(dsi_config, 0x0a, mode, hs);
 209 }
 210
 211 /*
 212  * NOTE: this function was used by OSPM.
 213  * TODO: will be removed later, should work out display interfaces for OSPM
 214  */
 215 void mdfld_dsi_controller_init(struct mdfld_dsi_config *dsi_config, int pipe)
 216 {
 217         if (!dsi_config || ((pipe != 0) && (pipe != 2))) {
 218                 DRM_ERROR("Invalid parameters\n");
 219                 return;
 220         }
 221
 222         mdfld_dsi_dpi_controller_init(dsi_config, pipe);
 223 }
 224
 225 static void mdfld_dsi_connector_save(struct drm_connector *connector)
 226 {
 227 }
 228
 229 static void mdfld_dsi_connector_restore(struct drm_connector *connector)
 230 {
 231 }
 232
 233 /* FIXME: start using the force parameter */
 234 static enum drm_connector_status
 235 mdfld_dsi_connector_detect(struct drm_connector *connector, bool force)
 236 {
 237         struct mdfld_dsi_connector *dsi_connector
 238                 = mdfld_dsi_connector(connector);
 239
 240         dsi_connector->status = connector_status_connected;
 241
 242         return dsi_connector->status;
 243 }
 244
 245 static int mdfld_dsi_connector_set_property(struct drm_connector *connector,
 246                                 struct drm_property *property,
 247                                 uint64_t value)
 248 {
 249         struct drm_encoder *encoder = connector->encoder;
 250
 251         if (!strcmp(property->name, "scaling mode") && encoder) {
 252                 struct psb_intel_crtc *psb_crtc =
 253                                         to_psb_intel_crtc(encoder->crtc);
 254                 bool centerechange;
 255                 uint64_t val;
 256
 257                 if (!psb_crtc)
 258                         goto set_prop_error;
 259
 260                 switch (value) {
 261                 case DRM_MODE_SCALE_FULLSCREEN:
 262                         break;
 263                 case DRM_MODE_SCALE_NO_SCALE:
 264                         break;
 265                 case DRM_MODE_SCALE_ASPECT:
 266                         break;
 267                 default:
 268                         goto set_prop_error;
 269                 }
 270
 271                 if (drm_object_property_get_value(&connector->base, property, &val))
 272                         goto set_prop_error;
 273
 274                 if (val == value)
 275                         goto set_prop_done;
 276
 277                 if (drm_object_property_set_value(&connector->base,
 278                                                         property, value))
 279                         goto set_prop_error;
 280
 281                 centerechange = (val == DRM_MODE_SCALE_NO_SCALE) ||
 282                         (value == DRM_MODE_SCALE_NO_SCALE);
 283
 284                 if (psb_crtc->saved_mode.hdisplay != 0 &&
 285                     psb_crtc->saved_mode.vdisplay != 0) {
 286                         if (centerechange) {
 287                                 if (!drm_crtc_helper_set_mode(encoder->crtc,
 288                                                 &psb_crtc->saved_mode,
 289                                                 encoder->crtc->x,
 290                                                 encoder->crtc->y,
 291                                                 encoder->crtc->fb))
 292                                         goto set_prop_error;
 293                         } else {
 294                                 struct drm_encoder_helper_funcs *funcs =
 295                                                 encoder->helper_private;
 296                                 funcs->mode_set(encoder,
 297                                         &psb_crtc->saved_mode,
 298                                         &psb_crtc->saved_adjusted_mode);
 299                         }
 300                 }
 301         } else if (!strcmp(property->name, "backlight") && encoder) {
 302                 if (drm_object_property_set_value(&connector->base, property,
 303                                                                         value))
 304                         goto set_prop_error;
 305                 else
 306                         gma_backlight_set(encoder->dev, value);
 307         }
 308 set_prop_done:
 309         return 0;
 310 set_prop_error:
 311         return -1;
 312 }
 313
 314 static void mdfld_dsi_connector_destroy(struct drm_connector *connector)
 315 {
 316         struct mdfld_dsi_connector *dsi_connector =
 317                                         mdfld_dsi_connector(connector);
 318         struct mdfld_dsi_pkg_sender *sender;
 319
 320         if (!dsi_connector)
 321                 return;
 322         drm_sysfs_connector_remove(connector);
 323         drm_connector_cleanup(connector);
 324         sender = dsi_connector->pkg_sender;
 325         mdfld_dsi_pkg_sender_destroy(sender);
 326         kfree(dsi_connector);
 327 }
 328
 329 static int mdfld_dsi_connector_get_modes(struct drm_connector *connector)
 330 {
 331         struct mdfld_dsi_connector *dsi_connector =
 332                                 mdfld_dsi_connector(connector);
 333         struct mdfld_dsi_config *dsi_config =
 334                                 mdfld_dsi_get_config(dsi_connector);
 335         struct drm_display_mode *fixed_mode = dsi_config->fixed_mode;
 336         struct drm_display_mode *dup_mode = NULL;
 337         struct drm_device *dev = connector->dev;
 338
 339         connector->display_info.min_vfreq = 0;
 340         connector->display_info.max_vfreq = 200;
 341         connector->display_info.min_hfreq = 0;
 342         connector->display_info.max_hfreq = 200;
 343
 344         if (fixed_mode) {
 345                 dev_dbg(dev->dev, "fixed_mode %dx%d\n",
 346                                 fixed_mode->hdisplay, fixed_mode->vdisplay);
 347                 dup_mode = drm_mode_duplicate(dev, fixed_mode);
 348                 drm_mode_probed_add(connector, dup_mode);
 349                 return 1;
 350         }
 351         DRM_ERROR("Didn't get any modes!\n");
 352         return 0;
 353 }
 354
 355 static int mdfld_dsi_connector_mode_valid(struct drm_connector *connector,
 356                                                 struct drm_display_mode *mode)
 357 {
 358         struct mdfld_dsi_connector *dsi_connector =
 359                                         mdfld_dsi_connector(connector);
 360         struct mdfld_dsi_config *dsi_config =
 361                                         mdfld_dsi_get_config(dsi_connector);
 362         struct drm_display_mode *fixed_mode = dsi_config->fixed_mode;
 363
 364         if (mode->flags & DRM_MODE_FLAG_DBLSCAN)
 365                 return MODE_NO_DBLESCAN;
 366
 367         if (mode->flags & DRM_MODE_FLAG_INTERLACE)
 368                 return MODE_NO_INTERLACE;
 369
 370         /**
 371          * FIXME: current DC has no fitting unit, reject any mode setting
 372          * request
 373          * Will figure out a way to do up-scaling(pannel fitting) later.
 374          **/
 375         if (fixed_mode) {
 376                 if (mode->hdisplay != fixed_mode->hdisplay)
 377                         return MODE_PANEL;
 378
 379                 if (mode->vdisplay != fixed_mode->vdisplay)
 380                         return MODE_PANEL;
 381         }
 382
 383         return MODE_OK;
 384 }
 385
 386 static void mdfld_dsi_connector_dpms(struct drm_connector *connector, int mode)
 387 {
 388         if (mode == connector->dpms)
 389                 return;
 390
 391         /*first, execute dpms*/
 392
 393         drm_helper_connector_dpms(connector, mode);
 394 }
 395
 396 static struct drm_encoder *mdfld_dsi_connector_best_encoder(
 397                                 struct drm_connector *connector)
 398 {
 399         struct mdfld_dsi_connector *dsi_connector =
 400                                 mdfld_dsi_connector(connector);
 401         struct mdfld_dsi_config *dsi_config =
 402                                 mdfld_dsi_get_config(dsi_connector);
 403         return &dsi_config->encoder->base.base;
 404 }
 405
 406 /*DSI connector funcs*/
 407 static const struct drm_connector_funcs mdfld_dsi_connector_funcs = {
 408         .dpms = /*drm_helper_connector_dpms*/mdfld_dsi_connector_dpms,
 409         .save = mdfld_dsi_connector_save,
 410         .restore = mdfld_dsi_connector_restore,
 411         .detect = mdfld_dsi_connector_detect,
 412         .fill_modes = drm_helper_probe_single_connector_modes,
 413         .set_property = mdfld_dsi_connector_set_property,
 414         .destroy = mdfld_dsi_connector_destroy,
 415 };
 416
 417 /*DSI connector helper funcs*/
 418 static const struct drm_connector_helper_funcs
 419         mdfld_dsi_connector_helper_funcs = {
 420         .get_modes = mdfld_dsi_connector_get_modes,
 421         .mode_valid = mdfld_dsi_connector_mode_valid,
 422         .best_encoder = mdfld_dsi_connector_best_encoder,
 423 };
 424
 425 static int mdfld_dsi_get_default_config(struct drm_device *dev,
 426                                 struct mdfld_dsi_config *config, int pipe)
 427 {
 428         if (!dev || !config) {
 429                 DRM_ERROR("Invalid parameters");
 430                 return -EINVAL;
 431         }
 432
 433         config->bpp = 24;
 434         if (mdfld_get_panel_type(dev, pipe) == TC35876X)
 435                 config->lane_count = 4;
 436         else
 437                 config->lane_count = 2;
 438         config->channel_num = 0;
 439
 440         if (mdfld_get_panel_type(dev, pipe) == TMD_VID)
 441                 config->video_mode = MDFLD_DSI_VIDEO_NON_BURST_MODE_SYNC_PULSE;
 442         else if (mdfld_get_panel_type(dev, pipe) == TC35876X)
 443                 config->video_mode =
 444                                 MDFLD_DSI_VIDEO_NON_BURST_MODE_SYNC_EVENTS;
 445         else
 446                 config->video_mode = MDFLD_DSI_VIDEO_BURST_MODE;
 447
 448         return 0;
 449 }
 450
 451 int mdfld_dsi_panel_reset(int pipe)
 452 {
 453         unsigned gpio;
 454         int ret = 0;
 455
 456         switch (pipe) {
 457         case 0:
 458                 gpio = 128;
 459                 break;
 460         case 2:
 461                 gpio = 34;
 462                 break;
 463         default:
 464                 DRM_ERROR("Invalid output\n");
 465                 return -EINVAL;
 466         }
 467
 468         ret = gpio_request(gpio, "gfx");
 469         if (ret) {
 470                 DRM_ERROR("gpio_rqueset failed\n");
 471                 return ret;
 472         }
 473
 474         ret = gpio_direction_output(gpio, 1);
 475         if (ret) {
 476                 DRM_ERROR("gpio_direction_output failed\n");
 477                 goto gpio_error;
 478         }
 479
 480         gpio_get_value(128);
 481
 482 gpio_error:
 483         if (gpio_is_valid(gpio))
 484                 gpio_free(gpio);
 485
 486         return ret;
 487 }
 488
 489 /*
 490  * MIPI output init
 491  * @dev drm device
 492  * @pipe pipe number. 0 or 2
 493  * @config
 494  *
 495  * Do the initialization of a MIPI output, including create DRM mode objects
 496  * initialization of DSI output on @pipe
 497  */
 498 void mdfld_dsi_output_init(struct drm_device *dev,
 499                            int pipe,
 500                            const struct panel_funcs *p_vid_funcs)
 501 {
 502         struct mdfld_dsi_config *dsi_config;
 503         struct mdfld_dsi_connector *dsi_connector;
 504         struct drm_connector *connector;
 505         struct mdfld_dsi_encoder *encoder;
 506         struct drm_psb_private *dev_priv = dev->dev_private;
 507         struct panel_info dsi_panel_info;
 508         u32 width_mm, height_mm;
 509
 510         dev_dbg(dev->dev, "init DSI output on pipe %d\n", pipe);
 511
 512         if (pipe != 0 && pipe != 2) {
 513                 DRM_ERROR("Invalid parameter\n");
 514                 return;
 515         }
 516
 517         /*create a new connetor*/
 518         dsi_connector = kzalloc(sizeof(struct mdfld_dsi_connector), GFP_KERNEL);
 519         if (!dsi_connector) {
 520                 DRM_ERROR("No memory");
 521                 return;
 522         }
 523
 524         dsi_connector->pipe =  pipe;
 525
 526         dsi_config = kzalloc(sizeof(struct mdfld_dsi_config),
 527                         GFP_KERNEL);
 528         if (!dsi_config) {
 529                 DRM_ERROR("cannot allocate memory for DSI config\n");
 530                 goto dsi_init_err0;
 531         }
 532         mdfld_dsi_get_default_config(dev, dsi_config, pipe);
 533
 534         dsi_connector->private = dsi_config;
 535
 536         dsi_config->changed = 1;
 537         dsi_config->dev = dev;
 538
 539         dsi_config->fixed_mode = p_vid_funcs->get_config_mode(dev);
 540         if (p_vid_funcs->get_panel_info(dev, pipe, &dsi_panel_info))
 541                         goto dsi_init_err0;
 542
 543         width_mm = dsi_panel_info.width_mm;
 544         height_mm = dsi_panel_info.height_mm;
 545
 546         dsi_config->mode = dsi_config->fixed_mode;
 547         dsi_config->connector = dsi_connector;
 548
 549         if (!dsi_config->fixed_mode) {
 550                 DRM_ERROR("No pannel fixed mode was found\n");
 551                 goto dsi_init_err0;
 552         }
 553
 554         if (pipe && dev_priv->dsi_configs[0]) {
 555                 dsi_config->dvr_ic_inited = 0;
 556                 dev_priv->dsi_configs[1] = dsi_config;
 557         } else if (pipe == 0) {
 558                 dsi_config->dvr_ic_inited = 1;
 559                 dev_priv->dsi_configs[0] = dsi_config;
 560         } else {
 561                 DRM_ERROR("Trying to init MIPI1 before MIPI0\n");
 562                 goto dsi_init_err0;
 563         }
 564
 565
 566         connector = &dsi_connector->base.base;
 567         drm_connector_init(dev, connector, &mdfld_dsi_connector_funcs,
 568                                                 DRM_MODE_CONNECTOR_LVDS);
 569         drm_connector_helper_add(connector, &mdfld_dsi_connector_helper_funcs);
 570
 571         connector->display_info.subpixel_order = SubPixelHorizontalRGB;
 572         connector->display_info.width_mm = width_mm;
 573         connector->display_info.height_mm = height_mm;
 574         connector->interlace_allowed = false;
 575         connector->doublescan_allowed = false;
 576
 577         /*attach properties*/
 578         drm_object_attach_property(&connector->base,
 579                                 dev->mode_config.scaling_mode_property,
 580                                 DRM_MODE_SCALE_FULLSCREEN);
 581         drm_object_attach_property(&connector->base,
 582                                 dev_priv->backlight_property,
 583                                 MDFLD_DSI_BRIGHTNESS_MAX_LEVEL);
 584
 585         /*init DSI package sender on this output*/
 586         if (mdfld_dsi_pkg_sender_init(dsi_connector, pipe)) {
 587                 DRM_ERROR("Package Sender initialization failed on pipe %d\n",
 588                                                                         pipe);
 589                 goto dsi_init_err0;
 590         }
 591
 592         encoder = mdfld_dsi_dpi_init(dev, dsi_connector, p_vid_funcs);
 593         if (!encoder) {
 594                 DRM_ERROR("Create DPI encoder failed\n");
 595                 goto dsi_init_err1;
 596         }
 597         encoder->private = dsi_config;
 598         dsi_config->encoder = encoder;
 599         encoder->base.type = (pipe == 0) ? INTEL_OUTPUT_MIPI :
 600                 INTEL_OUTPUT_MIPI2;
 601         drm_sysfs_connector_add(connector);
 602         return;
 603
 604         /*TODO: add code to destroy outputs on error*/
 605 dsi_init_err1:
 606         /*destroy sender*/
 607         mdfld_dsi_pkg_sender_destroy(dsi_connector->pkg_sender);
 608
 609         drm_connector_cleanup(connector);
 610
 611         kfree(dsi_config->fixed_mode);
 612         kfree(dsi_config);
 613 dsi_init_err0:
 614         kfree(dsi_connector);
 615 }