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 gma_crtc *gma_crtc = to_gma_crtc(encoder->crtc);
 253                 bool centerechange;
 254                 uint64_t val;
 255
 256                 if (!gma_crtc)
 257                         goto set_prop_error;
 258
 259                 switch (value) {
 260                 case DRM_MODE_SCALE_FULLSCREEN:
 261                         break;
 262                 case DRM_MODE_SCALE_NO_SCALE:
 263                         break;
 264                 case DRM_MODE_SCALE_ASPECT:
 265                         break;
 266                 default:
 267                         goto set_prop_error;
 268                 }
 269
 270                 if (drm_object_property_get_value(&connector->base, property, &val))
 271                         goto set_prop_error;
 272
 273                 if (val == value)
 274                         goto set_prop_done;
 275
 276                 if (drm_object_property_set_value(&connector->base,
 277                                                         property, value))
 278                         goto set_prop_error;
 279
 280                 centerechange = (val == DRM_MODE_SCALE_NO_SCALE) ||
 281                         (value == DRM_MODE_SCALE_NO_SCALE);
 282
 283                 if (gma_crtc->saved_mode.hdisplay != 0 &&
 284                     gma_crtc->saved_mode.vdisplay != 0) {
 285                         if (centerechange) {
 286                                 if (!drm_crtc_helper_set_mode(encoder->crtc,
 287                                                 &gma_crtc->saved_mode,
 288                                                 encoder->crtc->x,
 289                                                 encoder->crtc->y,
 290                                                 encoder->crtc->primary->fb))
 291                                         goto set_prop_error;
 292                         } else {
 293                                 const struct drm_encoder_helper_funcs *funcs =
 294                                                 encoder->helper_private;
 295                                 funcs->mode_set(encoder,
 296                                         &gma_crtc->saved_mode,
 297                                         &gma_crtc->saved_adjusted_mode);
 298                         }
 299                 }
 300         } else if (!strcmp(property->name, "backlight") && encoder) {
 301                 if (drm_object_property_set_value(&connector->base, property,
 302                                                                         value))
 303                         goto set_prop_error;
 304                 else
 305                         gma_backlight_set(encoder->dev, value);
 306         }
 307 set_prop_done:
 308         return 0;
 309 set_prop_error:
 310         return -1;
 311 }
 312
 313 static void mdfld_dsi_connector_destroy(struct drm_connector *connector)
 314 {
 315         struct mdfld_dsi_connector *dsi_connector =
 316                                         mdfld_dsi_connector(connector);
 317         struct mdfld_dsi_pkg_sender *sender;
 318
 319         if (!dsi_connector)
 320                 return;
 321         drm_connector_unregister(connector);
 322         drm_connector_cleanup(connector);
 323         sender = dsi_connector->pkg_sender;
 324         mdfld_dsi_pkg_sender_destroy(sender);
 325         kfree(dsi_connector);
 326 }
 327
 328 static int mdfld_dsi_connector_get_modes(struct drm_connector *connector)
 329 {
 330         struct mdfld_dsi_connector *dsi_connector =
 331                                 mdfld_dsi_connector(connector);
 332         struct mdfld_dsi_config *dsi_config =
 333                                 mdfld_dsi_get_config(dsi_connector);
 334         struct drm_display_mode *fixed_mode = dsi_config->fixed_mode;
 335         struct drm_display_mode *dup_mode = NULL;
 336         struct drm_device *dev = connector->dev;
 337
 338         if (fixed_mode) {
 339                 dev_dbg(dev->dev, "fixed_mode %dx%d\n",
 340                                 fixed_mode->hdisplay, fixed_mode->vdisplay);
 341                 dup_mode = drm_mode_duplicate(dev, fixed_mode);
 342                 drm_mode_probed_add(connector, dup_mode);
 343                 return 1;
 344         }
 345         DRM_ERROR("Didn't get any modes!\n");
 346         return 0;
 347 }
 348
 349 static int mdfld_dsi_connector_mode_valid(struct drm_connector *connector,
 350                                                 struct drm_display_mode *mode)
 351 {
 352         struct mdfld_dsi_connector *dsi_connector =
 353                                         mdfld_dsi_connector(connector);
 354         struct mdfld_dsi_config *dsi_config =
 355                                         mdfld_dsi_get_config(dsi_connector);
 356         struct drm_display_mode *fixed_mode = dsi_config->fixed_mode;
 357
 358         if (mode->flags & DRM_MODE_FLAG_DBLSCAN)
 359                 return MODE_NO_DBLESCAN;
 360
 361         if (mode->flags & DRM_MODE_FLAG_INTERLACE)
 362                 return MODE_NO_INTERLACE;
 363
 364         /**
 365          * FIXME: current DC has no fitting unit, reject any mode setting
 366          * request
 367          * Will figure out a way to do up-scaling(pannel fitting) later.
 368          **/
 369         if (fixed_mode) {
 370                 if (mode->hdisplay != fixed_mode->hdisplay)
 371                         return MODE_PANEL;
 372
 373                 if (mode->vdisplay != fixed_mode->vdisplay)
 374                         return MODE_PANEL;
 375         }
 376
 377         return MODE_OK;
 378 }
 379
 380 static struct drm_encoder *mdfld_dsi_connector_best_encoder(
 381                                 struct drm_connector *connector)
 382 {
 383         struct mdfld_dsi_connector *dsi_connector =
 384                                 mdfld_dsi_connector(connector);
 385         struct mdfld_dsi_config *dsi_config =
 386                                 mdfld_dsi_get_config(dsi_connector);
 387         return &dsi_config->encoder->base.base;
 388 }
 389
 390 /*DSI connector funcs*/
 391 static const struct drm_connector_funcs mdfld_dsi_connector_funcs = {
 392         .dpms = drm_helper_connector_dpms,
 393         .detect = mdfld_dsi_connector_detect,
 394         .fill_modes = drm_helper_probe_single_connector_modes,
 395         .set_property = mdfld_dsi_connector_set_property,
 396         .destroy = mdfld_dsi_connector_destroy,
 397 };
 398
 399 /*DSI connector helper funcs*/
 400 static const struct drm_connector_helper_funcs
 401         mdfld_dsi_connector_helper_funcs = {
 402         .get_modes = mdfld_dsi_connector_get_modes,
 403         .mode_valid = mdfld_dsi_connector_mode_valid,
 404         .best_encoder = mdfld_dsi_connector_best_encoder,
 405 };
 406
 407 static int mdfld_dsi_get_default_config(struct drm_device *dev,
 408                                 struct mdfld_dsi_config *config, int pipe)
 409 {
 410         if (!dev || !config) {
 411                 DRM_ERROR("Invalid parameters");
 412                 return -EINVAL;
 413         }
 414
 415         config->bpp = 24;
 416         if (mdfld_get_panel_type(dev, pipe) == TC35876X)
 417                 config->lane_count = 4;
 418         else
 419                 config->lane_count = 2;
 420         config->channel_num = 0;
 421
 422         if (mdfld_get_panel_type(dev, pipe) == TMD_VID)
 423                 config->video_mode = MDFLD_DSI_VIDEO_NON_BURST_MODE_SYNC_PULSE;
 424         else if (mdfld_get_panel_type(dev, pipe) == TC35876X)
 425                 config->video_mode =
 426                                 MDFLD_DSI_VIDEO_NON_BURST_MODE_SYNC_EVENTS;
 427         else
 428                 config->video_mode = MDFLD_DSI_VIDEO_BURST_MODE;
 429
 430         return 0;
 431 }
 432
 433 int mdfld_dsi_panel_reset(int pipe)
 434 {
 435         unsigned gpio;
 436         int ret = 0;
 437
 438         switch (pipe) {
 439         case 0:
 440                 gpio = 128;
 441                 break;
 442         case 2:
 443                 gpio = 34;
 444                 break;
 445         default:
 446                 DRM_ERROR("Invalid output\n");
 447                 return -EINVAL;
 448         }
 449
 450         ret = gpio_request(gpio, "gfx");
 451         if (ret) {
 452                 DRM_ERROR("gpio_rqueset failed\n");
 453                 return ret;
 454         }
 455
 456         ret = gpio_direction_output(gpio, 1);
 457         if (ret) {
 458                 DRM_ERROR("gpio_direction_output failed\n");
 459                 goto gpio_error;
 460         }
 461
 462         gpio_get_value(128);
 463
 464 gpio_error:
 465         if (gpio_is_valid(gpio))
 466                 gpio_free(gpio);
 467
 468         return ret;
 469 }
 470
 471 /*
 472  * MIPI output init
 473  * @dev drm device
 474  * @pipe pipe number. 0 or 2
 475  * @config
 476  *
 477  * Do the initialization of a MIPI output, including create DRM mode objects
 478  * initialization of DSI output on @pipe
 479  */
 480 void mdfld_dsi_output_init(struct drm_device *dev,
 481                            int pipe,
 482                            const struct panel_funcs *p_vid_funcs)
 483 {
 484         struct mdfld_dsi_config *dsi_config;
 485         struct mdfld_dsi_connector *dsi_connector;
 486         struct drm_connector *connector;
 487         struct mdfld_dsi_encoder *encoder;
 488         struct drm_psb_private *dev_priv = dev->dev_private;
 489         struct panel_info dsi_panel_info;
 490         u32 width_mm, height_mm;
 491
 492         dev_dbg(dev->dev, "init DSI output on pipe %d\n", pipe);
 493
 494         if (pipe != 0 && pipe != 2) {
 495                 DRM_ERROR("Invalid parameter\n");
 496                 return;
 497         }
 498
 499         /*create a new connetor*/
 500         dsi_connector = kzalloc(sizeof(struct mdfld_dsi_connector), GFP_KERNEL);
 501         if (!dsi_connector) {
 502                 DRM_ERROR("No memory");
 503                 return;
 504         }
 505
 506         dsi_connector->pipe =  pipe;
 507
 508         dsi_config = kzalloc(sizeof(struct mdfld_dsi_config),
 509                         GFP_KERNEL);
 510         if (!dsi_config) {
 511                 DRM_ERROR("cannot allocate memory for DSI config\n");
 512                 goto dsi_init_err0;
 513         }
 514         mdfld_dsi_get_default_config(dev, dsi_config, pipe);
 515
 516         dsi_connector->private = dsi_config;
 517
 518         dsi_config->changed = 1;
 519         dsi_config->dev = dev;
 520
 521         dsi_config->fixed_mode = p_vid_funcs->get_config_mode(dev);
 522         if (p_vid_funcs->get_panel_info(dev, pipe, &dsi_panel_info))
 523                         goto dsi_init_err0;
 524
 525         width_mm = dsi_panel_info.width_mm;
 526         height_mm = dsi_panel_info.height_mm;
 527
 528         dsi_config->mode = dsi_config->fixed_mode;
 529         dsi_config->connector = dsi_connector;
 530
 531         if (!dsi_config->fixed_mode) {
 532                 DRM_ERROR("No pannel fixed mode was found\n");
 533                 goto dsi_init_err0;
 534         }
 535
 536         if (pipe && dev_priv->dsi_configs[0]) {
 537                 dsi_config->dvr_ic_inited = 0;
 538                 dev_priv->dsi_configs[1] = dsi_config;
 539         } else if (pipe == 0) {
 540                 dsi_config->dvr_ic_inited = 1;
 541                 dev_priv->dsi_configs[0] = dsi_config;
 542         } else {
 543                 DRM_ERROR("Trying to init MIPI1 before MIPI0\n");
 544                 goto dsi_init_err0;
 545         }
 546
 547
 548         connector = &dsi_connector->base.base;
 549         dsi_connector->base.save = mdfld_dsi_connector_save;
 550         dsi_connector->base.restore = mdfld_dsi_connector_restore;
 551
 552         drm_connector_init(dev, connector, &mdfld_dsi_connector_funcs,
 553                                                 DRM_MODE_CONNECTOR_LVDS);
 554         drm_connector_helper_add(connector, &mdfld_dsi_connector_helper_funcs);
 555
 556         connector->display_info.subpixel_order = SubPixelHorizontalRGB;
 557         connector->display_info.width_mm = width_mm;
 558         connector->display_info.height_mm = height_mm;
 559         connector->interlace_allowed = false;
 560         connector->doublescan_allowed = false;
 561
 562         /*attach properties*/
 563         drm_object_attach_property(&connector->base,
 564                                 dev->mode_config.scaling_mode_property,
 565                                 DRM_MODE_SCALE_FULLSCREEN);
 566         drm_object_attach_property(&connector->base,
 567                                 dev_priv->backlight_property,
 568                                 MDFLD_DSI_BRIGHTNESS_MAX_LEVEL);
 569
 570         /*init DSI package sender on this output*/
 571         if (mdfld_dsi_pkg_sender_init(dsi_connector, pipe)) {
 572                 DRM_ERROR("Package Sender initialization failed on pipe %d\n",
 573                                                                         pipe);
 574                 goto dsi_init_err0;
 575         }
 576
 577         encoder = mdfld_dsi_dpi_init(dev, dsi_connector, p_vid_funcs);
 578         if (!encoder) {
 579                 DRM_ERROR("Create DPI encoder failed\n");
 580                 goto dsi_init_err1;
 581         }
 582         encoder->private = dsi_config;
 583         dsi_config->encoder = encoder;
 584         encoder->base.type = (pipe == 0) ? INTEL_OUTPUT_MIPI :
 585                 INTEL_OUTPUT_MIPI2;
 586         drm_connector_register(connector);
 587         return;
 588
 589         /*TODO: add code to destroy outputs on error*/
 590 dsi_init_err1:
 591         /*destroy sender*/
 592         mdfld_dsi_pkg_sender_destroy(dsi_connector->pkg_sender);
 593
 594         drm_connector_cleanup(connector);
 595
 596         kfree(dsi_config->fixed_mode);
 597         kfree(dsi_config);
 598 dsi_init_err0:
 599         kfree(dsi_connector);
 600 }