drivers/staging/gma500/psb_powermgmt.c

   1 /**************************************************************************
   2  * Copyright (c) 2009, Intel Corporation.
   3  * All Rights Reserved.
   4
   5  * Permission is hereby granted, free of charge, to any person obtaining a
   6  * copy of this software and associated documentation files (the "Software"),
   7  * to deal in the Software without restriction, including without limitation
   8  * the rights to use, copy, modify, merge, publish, distribute, sublicense,
   9  * and/or sell copies of the Software, and to permit persons to whom the
  10  * Software is furnished to do so, subject to the following conditions:
  11  *
  12  * The above copyright notice and this permission notice (including the next
  13  * paragraph) shall be included in all copies or substantial portions of the
  14  * Software.
  15  *
  16  * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
  17  * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
  18  * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.  IN NO EVENT SHALL
  19  * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
  20  * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
  21  * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
  22  * SOFTWARE.
  23  *
  24  * Authors:
  25  *    Benjamin Defnet <benjamin.r.defnet@intel.com>
  26  *    Rajesh Poornachandran <rajesh.poornachandran@intel.com>
  27  *
  28  */
  29 #include "psb_powermgmt.h"
  30 #include "psb_drv.h"
  31 #include "psb_intel_reg.h"
  32 #include <linux/mutex.h>
  33 #include <linux/pm_runtime.h>
  34
  35 #undef OSPM_GFX_DPK
  36
  37 extern u32 gui32SGXDeviceID;
  38 extern u32 gui32MRSTDisplayDeviceID;
  39 extern u32 gui32MRSTMSVDXDeviceID;
  40 extern u32 gui32MRSTTOPAZDeviceID;
  41
  42 struct drm_device *gpDrmDevice = NULL;
  43 static struct mutex power_mutex;
  44 static bool gbSuspendInProgress = false;
  45 static bool gbResumeInProgress = false;
  46 static int g_hw_power_status_mask;
  47 static atomic_t g_display_access_count;
  48 static atomic_t g_graphics_access_count;
  49 static atomic_t g_videoenc_access_count;
  50 static atomic_t g_videodec_access_count;
  51 int allow_runtime_pm = 0;
  52
  53 void ospm_power_island_up(int hw_islands);
  54 void ospm_power_island_down(int hw_islands);
  55 static bool gbSuspended = false;
  56 bool gbgfxsuspended = false;
  57
  58 /*
  59  * ospm_power_init
  60  *
  61  * Description: Initialize this ospm power management module
  62  */
  63 void ospm_power_init(struct drm_device *dev)
  64 {
  65         struct drm_psb_private *dev_priv = (struct drm_psb_private *)dev->dev_private;
  66
  67         gpDrmDevice = dev;
  68
  69         dev_priv->apm_base = dev_priv->apm_reg & 0xffff;
  70         dev_priv->ospm_base &= 0xffff;
  71
  72         mutex_init(&power_mutex);
  73         g_hw_power_status_mask = OSPM_ALL_ISLANDS;
  74         atomic_set(&g_display_access_count, 0);
  75         atomic_set(&g_graphics_access_count, 0);
  76         atomic_set(&g_videoenc_access_count, 0);
  77         atomic_set(&g_videodec_access_count, 0);
  78 }
  79
  80 /*
  81  * ospm_power_uninit
  82  *
  83  * Description: Uninitialize this ospm power management module
  84  */
  85 void ospm_power_uninit(void)
  86 {
  87         mutex_destroy(&power_mutex);
  88         pm_runtime_disable(&gpDrmDevice->pdev->dev);
  89         pm_runtime_set_suspended(&gpDrmDevice->pdev->dev);
  90 }
  91
  92
  93 /*
  94  * save_display_registers
  95  *
  96  * Description: We are going to suspend so save current display
  97  * register state.
  98  */
  99 static int save_display_registers(struct drm_device *dev)
 100 {
 101         struct drm_psb_private *dev_priv = dev->dev_private;
 102         struct drm_crtc * crtc;
 103         struct drm_connector * connector;
 104
 105         /* Display arbitration control + watermarks */
 106         dev_priv->saveDSPARB = PSB_RVDC32(DSPARB);
 107         dev_priv->saveDSPFW1 = PSB_RVDC32(DSPFW1);
 108         dev_priv->saveDSPFW2 = PSB_RVDC32(DSPFW2);
 109         dev_priv->saveDSPFW3 = PSB_RVDC32(DSPFW3);
 110         dev_priv->saveDSPFW4 = PSB_RVDC32(DSPFW4);
 111         dev_priv->saveDSPFW5 = PSB_RVDC32(DSPFW5);
 112         dev_priv->saveDSPFW6 = PSB_RVDC32(DSPFW6);
 113         dev_priv->saveCHICKENBIT = PSB_RVDC32(DSPCHICKENBIT);
 114
 115         /*save crtc and output state*/
 116         mutex_lock(&dev->mode_config.mutex);
 117         list_for_each_entry(crtc, &dev->mode_config.crtc_list, head) {
 118                 if(drm_helper_crtc_in_use(crtc)) {
 119                         crtc->funcs->save(crtc);
 120                 }
 121         }
 122
 123         list_for_each_entry(connector, &dev->mode_config.connector_list, head) {
 124                 connector->funcs->save(connector);
 125         }
 126         mutex_unlock(&dev->mode_config.mutex);
 127
 128         /* Interrupt state */
 129         /*
 130          * Handled in psb_irq.c
 131          */
 132
 133         return 0;
 134 }
 135
 136 /*
 137  * restore_display_registers
 138  *
 139  * Description: We are going to resume so restore display register state.
 140  */
 141 static int restore_display_registers(struct drm_device *dev)
 142 {
 143         struct drm_psb_private *dev_priv = dev->dev_private;
 144         struct drm_crtc * crtc;
 145         struct drm_connector * connector;
 146
 147         /* Display arbitration + watermarks */
 148         PSB_WVDC32(dev_priv->saveDSPARB, DSPARB);
 149         PSB_WVDC32(dev_priv->saveDSPFW1, DSPFW1);
 150         PSB_WVDC32(dev_priv->saveDSPFW2, DSPFW2);
 151         PSB_WVDC32(dev_priv->saveDSPFW3, DSPFW3);
 152         PSB_WVDC32(dev_priv->saveDSPFW4, DSPFW4);
 153         PSB_WVDC32(dev_priv->saveDSPFW5, DSPFW5);
 154         PSB_WVDC32(dev_priv->saveDSPFW6, DSPFW6);
 155         PSB_WVDC32(dev_priv->saveCHICKENBIT, DSPCHICKENBIT);
 156
 157         /*make sure VGA plane is off. it initializes to on after reset!*/
 158         PSB_WVDC32(0x80000000, VGACNTRL);
 159
 160         mutex_lock(&dev->mode_config.mutex);
 161         list_for_each_entry(crtc, &dev->mode_config.crtc_list, head) {
 162                 if(drm_helper_crtc_in_use(crtc))
 163                         crtc->funcs->restore(crtc);
 164         }
 165         list_for_each_entry(connector, &dev->mode_config.connector_list, head) {
 166                 connector->funcs->restore(connector);
 167         }
 168         mutex_unlock(&dev->mode_config.mutex);
 169
 170         /*Interrupt state*/
 171         /*
 172          * Handled in psb_irq.c
 173          */
 174
 175         return 0;
 176 }
 177 /*
 178  * powermgmt_suspend_display
 179  *
 180  * Description: Suspend the display hardware saving state and disabling
 181  * as necessary.
 182  */
 183 void ospm_suspend_display(struct drm_device *dev)
 184 {
 185         struct drm_psb_private *dev_priv = dev->dev_private;
 186         int pp_stat, ret=0;
 187
 188         printk(KERN_ALERT "%s \n", __func__);
 189
 190 #ifdef OSPM_GFX_DPK
 191         printk(KERN_ALERT "%s \n", __func__);
 192 #endif
 193         if (!(g_hw_power_status_mask & OSPM_DISPLAY_ISLAND))
 194                 return;
 195
 196         save_display_registers(dev);
 197
 198         if (dev_priv->iLVDS_enable) {
 199                 /*shutdown the panel*/
 200                 PSB_WVDC32(0, PP_CONTROL);
 201
 202                 do {
 203                         pp_stat = PSB_RVDC32(PP_STATUS);
 204                 } while (pp_stat & 0x80000000);
 205
 206                 /*turn off the plane*/
 207                 PSB_WVDC32(0x58000000, DSPACNTR);
 208                 PSB_WVDC32(0, DSPASURF);/*trigger the plane disable*/
 209                 /*wait ~4 ticks*/
 210                 msleep(4);
 211
 212                 /*turn off pipe*/
 213                 PSB_WVDC32(0x0, PIPEACONF);
 214                 /*wait ~8 ticks*/
 215                 msleep(8);
 216
 217                 /*turn off PLLs*/
 218                 PSB_WVDC32(0, MRST_DPLL_A);
 219         } else {
 220                 PSB_WVDC32(DPI_SHUT_DOWN, DPI_CONTROL_REG);
 221                 PSB_WVDC32(0x0, PIPEACONF);
 222                 PSB_WVDC32(0x2faf0000, BLC_PWM_CTL);
 223                 while (REG_READ(0x70008) & 0x40000000);
 224                 while ((PSB_RVDC32(GEN_FIFO_STAT_REG) & DPI_FIFO_EMPTY)
 225                         != DPI_FIFO_EMPTY);
 226                 PSB_WVDC32(0, DEVICE_READY_REG);
 227                         /* turn off panel power */
 228                 ret = 0;
 229         }
 230         ospm_power_island_down(OSPM_DISPLAY_ISLAND);
 231 }
 232
 233 /*
 234  * ospm_resume_display
 235  *
 236  * Description: Resume the display hardware restoring state and enabling
 237  * as necessary.
 238  */
 239 void ospm_resume_display(struct pci_dev *pdev)
 240 {
 241         struct drm_device *dev = pci_get_drvdata(pdev);
 242         struct drm_psb_private *dev_priv = dev->dev_private;
 243         struct psb_gtt *pg = dev_priv->pg;
 244
 245         printk(KERN_ALERT "%s \n", __func__);
 246
 247 #ifdef OSPM_GFX_DPK
 248         printk(KERN_ALERT "%s \n", __func__);
 249 #endif
 250         if (g_hw_power_status_mask & OSPM_DISPLAY_ISLAND)
 251                 return;
 252
 253         /* turn on the display power island */
 254         ospm_power_island_up(OSPM_DISPLAY_ISLAND);
 255
 256         PSB_WVDC32(pg->pge_ctl | _PSB_PGETBL_ENABLED, PSB_PGETBL_CTL);
 257         pci_write_config_word(pdev, PSB_GMCH_CTRL,
 258                         pg->gmch_ctrl | _PSB_GMCH_ENABLED);
 259
 260         /* Don't reinitialize the GTT as it is unnecessary.  The gtt is
 261          * stored in memory so it will automatically be restored.  All
 262          * we need to do is restore the PGETBL_CTL which we already do
 263          * above.
 264          */
 265         /*psb_gtt_init(dev_priv->pg, 1);*/
 266
 267         restore_display_registers(dev);
 268 }
 269
 270 #if 1
 271 /*
 272  * ospm_suspend_pci
 273  *
 274  * Description: Suspend the pci device saving state and disabling
 275  * as necessary.
 276  */
 277 static void ospm_suspend_pci(struct pci_dev *pdev)
 278 {
 279         struct drm_device *dev = pci_get_drvdata(pdev);
 280         struct drm_psb_private *dev_priv = dev->dev_private;
 281         int bsm, vbt;
 282
 283         if (gbSuspended)
 284                 return;
 285
 286 #ifdef OSPM_GFX_DPK
 287         printk(KERN_ALERT "ospm_suspend_pci\n");
 288 #endif
 289
 290         pci_save_state(pdev);
 291         pci_read_config_dword(pdev, 0x5C, &bsm);
 292         dev_priv->saveBSM = bsm;
 293         pci_read_config_dword(pdev, 0xFC, &vbt);
 294         dev_priv->saveVBT = vbt;
 295         pci_read_config_dword(pdev, PSB_PCIx_MSI_ADDR_LOC, &dev_priv->msi_addr);
 296         pci_read_config_dword(pdev, PSB_PCIx_MSI_DATA_LOC, &dev_priv->msi_data);
 297
 298         pci_disable_device(pdev);
 299         pci_set_power_state(pdev, PCI_D3hot);
 300
 301         gbSuspended = true;
 302         gbgfxsuspended = true;
 303 }
 304
 305 /*
 306  * ospm_resume_pci
 307  *
 308  * Description: Resume the pci device restoring state and enabling
 309  * as necessary.
 310  */
 311 static bool ospm_resume_pci(struct pci_dev *pdev)
 312 {
 313         struct drm_device *dev = pci_get_drvdata(pdev);
 314         struct drm_psb_private *dev_priv = dev->dev_private;
 315         int ret = 0;
 316
 317         if (!gbSuspended)
 318                 return true;
 319
 320 #ifdef OSPM_GFX_DPK
 321         printk(KERN_ALERT "ospm_resume_pci\n");
 322 #endif
 323
 324         pci_set_power_state(pdev, PCI_D0);
 325         pci_restore_state(pdev);
 326         pci_write_config_dword(pdev, 0x5c, dev_priv->saveBSM);
 327         pci_write_config_dword(pdev, 0xFC, dev_priv->saveVBT);
 328         /* retoring MSI address and data in PCIx space */
 329         pci_write_config_dword(pdev, PSB_PCIx_MSI_ADDR_LOC, dev_priv->msi_addr);
 330         pci_write_config_dword(pdev, PSB_PCIx_MSI_DATA_LOC, dev_priv->msi_data);
 331         ret = pci_enable_device(pdev);
 332
 333         if (ret != 0)
 334                 printk(KERN_ALERT "ospm_resume_pci: pci_enable_device failed: %d\n", ret);
 335         else
 336                 gbSuspended = false;
 337
 338         return !gbSuspended;
 339 }
 340 #endif
 341 /*
 342  * ospm_power_suspend
 343  *
 344  * Description: OSPM is telling our driver to suspend so save state
 345  * and power down all hardware.
 346  */
 347 int ospm_power_suspend(struct pci_dev *pdev, pm_message_t state)
 348 {
 349         int ret = 0;
 350         int graphics_access_count;
 351         int videoenc_access_count;
 352         int videodec_access_count;
 353         int display_access_count;
 354         bool suspend_pci = true;
 355
 356         if(gbSuspendInProgress || gbResumeInProgress)
 357         {
 358 #ifdef OSPM_GFX_DPK
 359                 printk(KERN_ALERT "OSPM_GFX_DPK: %s system BUSY \n", __func__);
 360 #endif
 361                 return  -EBUSY;
 362         }
 363
 364         mutex_lock(&power_mutex);
 365
 366         if (!gbSuspended) {
 367                 graphics_access_count = atomic_read(&g_graphics_access_count);
 368                 videoenc_access_count = atomic_read(&g_videoenc_access_count);
 369                 videodec_access_count = atomic_read(&g_videodec_access_count);
 370                 display_access_count = atomic_read(&g_display_access_count);
 371
 372                 if (graphics_access_count ||
 373                         videoenc_access_count ||
 374                         videodec_access_count ||
 375                         display_access_count)
 376                         ret = -EBUSY;
 377
 378                 if (!ret) {
 379                         gbSuspendInProgress = true;
 380
 381                         psb_irq_uninstall_islands(gpDrmDevice, OSPM_DISPLAY_ISLAND);
 382                         ospm_suspend_display(gpDrmDevice);
 383                         if (suspend_pci == true) {
 384                                 ospm_suspend_pci(pdev);
 385                         }
 386                         gbSuspendInProgress = false;
 387                 } else {
 388                         printk(KERN_ALERT "ospm_power_suspend: device busy: graphics %d videoenc %d videodec %d display %d\n", graphics_access_count, videoenc_access_count, videodec_access_count, display_access_count);
 389                 }
 390         }
 391
 392
 393         mutex_unlock(&power_mutex);
 394         return ret;
 395 }
 396
 397 /*
 398  * ospm_power_island_up
 399  *
 400  * Description: Restore power to the specified island(s) (powergating)
 401  */
 402 void ospm_power_island_up(int hw_islands)
 403 {
 404         u32 pwr_cnt = 0;
 405         u32 pwr_sts = 0;
 406         u32 pwr_mask = 0;
 407
 408         struct drm_psb_private *dev_priv =
 409                 (struct drm_psb_private *) gpDrmDevice->dev_private;
 410
 411
 412         if (hw_islands & OSPM_DISPLAY_ISLAND) {
 413                 pwr_mask = PSB_PWRGT_DISPLAY_MASK;
 414
 415                 pwr_cnt = inl(dev_priv->ospm_base + PSB_PM_SSC);
 416                 pwr_cnt &= ~pwr_mask;
 417                 outl(pwr_cnt, (dev_priv->ospm_base + PSB_PM_SSC));
 418
 419                 while (true) {
 420                         pwr_sts = inl(dev_priv->ospm_base + PSB_PM_SSS);
 421                         if ((pwr_sts & pwr_mask) == 0)
 422                                 break;
 423                         else
 424                                 udelay(10);
 425                 }
 426         }
 427
 428         g_hw_power_status_mask |= hw_islands;
 429 }
 430
 431 /*
 432  * ospm_power_resume
 433  */
 434 int ospm_power_resume(struct pci_dev *pdev)
 435 {
 436         if(gbSuspendInProgress || gbResumeInProgress)
 437         {
 438 #ifdef OSPM_GFX_DPK
 439                 printk(KERN_ALERT "OSPM_GFX_DPK: %s hw_island: Suspend || gbResumeInProgress!!!! \n", __func__);
 440 #endif
 441                 return 0;
 442         }
 443
 444         mutex_lock(&power_mutex);
 445
 446 #ifdef OSPM_GFX_DPK
 447         printk(KERN_ALERT "OSPM_GFX_DPK: ospm_power_resume \n");
 448 #endif
 449
 450         gbResumeInProgress = true;
 451
 452         ospm_resume_pci(pdev);
 453
 454         ospm_resume_display(gpDrmDevice->pdev);
 455         psb_irq_preinstall_islands(gpDrmDevice, OSPM_DISPLAY_ISLAND);
 456         psb_irq_postinstall_islands(gpDrmDevice, OSPM_DISPLAY_ISLAND);
 457
 458         gbResumeInProgress = false;
 459
 460         mutex_unlock(&power_mutex);
 461
 462         return 0;
 463 }
 464
 465
 466 /*
 467  * ospm_power_island_down
 468  *
 469  * Description: Cut power to the specified island(s) (powergating)
 470  */
 471 void ospm_power_island_down(int islands)
 472 {
 473 #if 0
 474         u32 pwr_cnt = 0;
 475         u32 pwr_mask = 0;
 476         u32 pwr_sts = 0;
 477
 478         struct drm_psb_private *dev_priv =
 479                 (struct drm_psb_private *) gpDrmDevice->dev_private;
 480
 481         g_hw_power_status_mask &= ~islands;
 482
 483         if (islands & OSPM_GRAPHICS_ISLAND) {
 484                 pwr_cnt |= PSB_PWRGT_GFX_MASK;
 485                 pwr_mask |= PSB_PWRGT_GFX_MASK;
 486                 if (dev_priv->graphics_state == PSB_PWR_STATE_ON) {
 487                         dev_priv->gfx_on_time += (jiffies - dev_priv->gfx_last_mode_change) * 1000 / HZ;
 488                         dev_priv->gfx_last_mode_change = jiffies;
 489                         dev_priv->graphics_state = PSB_PWR_STATE_OFF;
 490                         dev_priv->gfx_off_cnt++;
 491                 }
 492         }
 493         if (islands & OSPM_VIDEO_ENC_ISLAND) {
 494                 pwr_cnt |= PSB_PWRGT_VID_ENC_MASK;
 495                 pwr_mask |= PSB_PWRGT_VID_ENC_MASK;
 496         }
 497         if (islands & OSPM_VIDEO_DEC_ISLAND) {
 498                 pwr_cnt |= PSB_PWRGT_VID_DEC_MASK;
 499                 pwr_mask |= PSB_PWRGT_VID_DEC_MASK;
 500         }
 501         if (pwr_cnt) {
 502                 pwr_cnt |= inl(dev_priv->apm_base);
 503                 outl(pwr_cnt, dev_priv->apm_base  + PSB_APM_CMD);
 504                 while (true) {
 505                         pwr_sts = inl(dev_priv->apm_base + PSB_APM_STS);
 506
 507                         if ((pwr_sts & pwr_mask) == pwr_mask)
 508                                 break;
 509                         else
 510                                 udelay(10);
 511                 }
 512         }
 513
 514         if (islands & OSPM_DISPLAY_ISLAND) {
 515                 pwr_mask = PSB_PWRGT_DISPLAY_MASK;
 516
 517                 outl(pwr_mask, (dev_priv->ospm_base + PSB_PM_SSC));
 518
 519                 while (true) {
 520                         pwr_sts = inl(dev_priv->ospm_base + PSB_PM_SSS);
 521                         if ((pwr_sts & pwr_mask) == pwr_mask)
 522                                 break;
 523                         else
 524                                 udelay(10);
 525                 }
 526         }
 527 #endif
 528 }
 529
 530
 531 /*
 532  * ospm_power_is_hw_on
 533  *
 534  * Description: do an instantaneous check for if the specified islands
 535  * are on.  Only use this in cases where you know the g_state_change_mutex
 536  * is already held such as in irq install/uninstall.  Otherwise, use
 537  * ospm_power_using_hw_begin().
 538  */
 539 bool ospm_power_is_hw_on(int hw_islands)
 540 {
 541         return ((g_hw_power_status_mask & hw_islands) == hw_islands) ? true:false;
 542 }
 543
 544 /*
 545  * ospm_power_using_hw_begin
 546  *
 547  * Description: Notify PowerMgmt module that you will be accessing the
 548  * specified island's hw so don't power it off.  If force_on is true,
 549  * this will power on the specified island if it is off.
 550  * Otherwise, this will return false and the caller is expected to not
 551  * access the hw.
 552  *
 553  * NOTE *** If this is called from and interrupt handler or other atomic
 554  * context, then it will return false if we are in the middle of a
 555  * power state transition and the caller will be expected to handle that
 556  * even if force_on is set to true.
 557  */
 558 bool ospm_power_using_hw_begin(int hw_island, UHBUsage usage)
 559 {
 560         return 1;       /*FIXMEAC */
 561 #if 0
 562         bool ret = true;
 563         bool island_is_off = false;
 564         bool b_atomic = (in_interrupt() || in_atomic());
 565         bool locked = true;
 566         struct pci_dev *pdev = gpDrmDevice->pdev;
 567         u32 deviceID = 0;
 568         bool force_on = usage ? true: false;
 569         /*quick path, not 100% race safe, but should be enough comapre to current other code in this file */
 570         if (!force_on) {
 571                 if (hw_island & (OSPM_ALL_ISLANDS & ~g_hw_power_status_mask))
 572                         return false;
 573                 else {
 574                         locked = false;
 575 #ifdef CONFIG_PM_RUNTIME
 576                         /* increment pm_runtime_refcount */
 577                         pm_runtime_get(&pdev->dev);
 578 #endif
 579                         goto increase_count;
 580                 }
 581         }
 582
 583
 584         if (!b_atomic)
 585                 mutex_lock(&power_mutex);
 586
 587         island_is_off = hw_island & (OSPM_ALL_ISLANDS & ~g_hw_power_status_mask);
 588
 589         if (b_atomic && (gbSuspendInProgress || gbResumeInProgress || gbSuspended) && force_on && island_is_off)
 590                 ret = false;
 591
 592         if (ret && island_is_off && !force_on)
 593                 ret = false;
 594
 595         if (ret && island_is_off && force_on) {
 596                 gbResumeInProgress = true;
 597
 598                 ret = ospm_resume_pci(pdev);
 599
 600                 if (ret) {
 601                         switch(hw_island)
 602                         {
 603                         case OSPM_DISPLAY_ISLAND:
 604                                 deviceID = gui32MRSTDisplayDeviceID;
 605                                 ospm_resume_display(pdev);
 606                                 psb_irq_preinstall_islands(gpDrmDevice, OSPM_DISPLAY_ISLAND);
 607                                 psb_irq_postinstall_islands(gpDrmDevice, OSPM_DISPLAY_ISLAND);
 608                                 break;
 609                         case OSPM_GRAPHICS_ISLAND:
 610                                 deviceID = gui32SGXDeviceID;
 611                                 ospm_power_island_up(OSPM_GRAPHICS_ISLAND);
 612                                 psb_irq_preinstall_islands(gpDrmDevice, OSPM_GRAPHICS_ISLAND);
 613                                 psb_irq_postinstall_islands(gpDrmDevice, OSPM_GRAPHICS_ISLAND);
 614                                 break;
 615 #if 1
 616                         case OSPM_VIDEO_DEC_ISLAND:
 617                                 if(!ospm_power_is_hw_on(OSPM_DISPLAY_ISLAND)) {
 618                                         //printk(KERN_ALERT "%s power on display for video decode use\n", __func__);
 619                                         deviceID = gui32MRSTDisplayDeviceID;
 620                                         ospm_resume_display(pdev);
 621                                         psb_irq_preinstall_islands(gpDrmDevice, OSPM_DISPLAY_ISLAND);
 622                                         psb_irq_postinstall_islands(gpDrmDevice, OSPM_DISPLAY_ISLAND);
 623                                 }
 624                                 else{
 625                                         //printk(KERN_ALERT "%s display is already on for video decode use\n", __func__);
 626                                 }
 627
 628                                 if(!ospm_power_is_hw_on(OSPM_VIDEO_DEC_ISLAND)) {
 629                                         //printk(KERN_ALERT "%s power on video decode\n", __func__);
 630                                         deviceID = gui32MRSTMSVDXDeviceID;
 631                                         ospm_power_island_up(OSPM_VIDEO_DEC_ISLAND);
 632                                         psb_irq_preinstall_islands(gpDrmDevice, OSPM_VIDEO_DEC_ISLAND);
 633                                         psb_irq_postinstall_islands(gpDrmDevice, OSPM_VIDEO_DEC_ISLAND);
 634                                 }
 635                                 else{
 636                                         //printk(KERN_ALERT "%s video decode is already on\n", __func__);
 637                                 }
 638
 639                                 break;
 640                         case OSPM_VIDEO_ENC_ISLAND:
 641                                 if(!ospm_power_is_hw_on(OSPM_DISPLAY_ISLAND)) {
 642                                         //printk(KERN_ALERT "%s power on display for video encode\n", __func__);
 643                                         deviceID = gui32MRSTDisplayDeviceID;
 644                                         ospm_resume_display(pdev);
 645                                         psb_irq_preinstall_islands(gpDrmDevice, OSPM_DISPLAY_ISLAND);
 646                                         psb_irq_postinstall_islands(gpDrmDevice, OSPM_DISPLAY_ISLAND);
 647                                 }
 648                                 else{
 649                                         //printk(KERN_ALERT "%s display is already on for video encode use\n", __func__);
 650                                 }
 651
 652                                 if(!ospm_power_is_hw_on(OSPM_VIDEO_ENC_ISLAND)) {
 653                                         //printk(KERN_ALERT "%s power on video encode\n", __func__);
 654                                         deviceID = gui32MRSTTOPAZDeviceID;
 655                                         ospm_power_island_up(OSPM_VIDEO_ENC_ISLAND);
 656                                         psb_irq_preinstall_islands(gpDrmDevice, OSPM_VIDEO_ENC_ISLAND);
 657                                         psb_irq_postinstall_islands(gpDrmDevice, OSPM_VIDEO_ENC_ISLAND);
 658                                 }
 659                                 else{
 660                                         //printk(KERN_ALERT "%s video decode is already on\n", __func__);
 661                                 }
 662 #endif
 663                                 break;
 664
 665                         default:
 666                                 printk(KERN_ALERT "%s unknown island !!!! \n", __func__);
 667                                 break;
 668                         }
 669
 670                 }
 671
 672                 if (!ret)
 673                         printk(KERN_ALERT "ospm_power_using_hw_begin: forcing on %d failed\n", hw_island);
 674
 675                 gbResumeInProgress = false;
 676         }
 677 increase_count:
 678         if (ret) {
 679                 switch(hw_island)
 680                 {
 681                 case OSPM_GRAPHICS_ISLAND:
 682                         atomic_inc(&g_graphics_access_count);
 683                         break;
 684                 case OSPM_VIDEO_ENC_ISLAND:
 685                         atomic_inc(&g_videoenc_access_count);
 686                         break;
 687                 case OSPM_VIDEO_DEC_ISLAND:
 688                         atomic_inc(&g_videodec_access_count);
 689                         break;
 690                 case OSPM_DISPLAY_ISLAND:
 691                         atomic_inc(&g_display_access_count);
 692                         break;
 693                 }
 694         }
 695
 696         if (!b_atomic && locked)
 697                 mutex_unlock(&power_mutex);
 698
 699         return ret;
 700 #endif
 701 }
 702
 703
 704 /*
 705  * ospm_power_using_hw_end
 706  *
 707  * Description: Notify PowerMgmt module that you are done accessing the
 708  * specified island's hw so feel free to power it off.  Note that this
 709  * function doesn't actually power off the islands.
 710  */
 711 void ospm_power_using_hw_end(int hw_island)
 712 {
 713 #if 0 /* FIXMEAC */
 714         switch(hw_island)
 715         {
 716         case OSPM_GRAPHICS_ISLAND:
 717                 atomic_dec(&g_graphics_access_count);
 718                 break;
 719         case OSPM_VIDEO_ENC_ISLAND:
 720                 atomic_dec(&g_videoenc_access_count);
 721                 break;
 722         case OSPM_VIDEO_DEC_ISLAND:
 723                 atomic_dec(&g_videodec_access_count);
 724                 break;
 725         case OSPM_DISPLAY_ISLAND:
 726                 atomic_dec(&g_display_access_count);
 727                 break;
 728         }
 729
 730         //decrement runtime pm ref count
 731         pm_runtime_put(&gpDrmDevice->pdev->dev);
 732
 733         WARN_ON(atomic_read(&g_graphics_access_count) < 0);
 734         WARN_ON(atomic_read(&g_videoenc_access_count) < 0);
 735         WARN_ON(atomic_read(&g_videodec_access_count) < 0);
 736         WARN_ON(atomic_read(&g_display_access_count) < 0);
 737 #endif
 738 }
 739
 740 int ospm_runtime_pm_allow(struct drm_device * dev)
 741 {
 742         return 0;
 743 }
 744
 745 void ospm_runtime_pm_forbid(struct drm_device * dev)
 746 {
 747         struct drm_psb_private * dev_priv = dev->dev_private;
 748
 749         DRM_INFO("%s\n", __FUNCTION__);
 750
 751         pm_runtime_forbid(&dev->pdev->dev);
 752         dev_priv->rpm_enabled = 0;
 753 }
 754
 755 int psb_runtime_suspend(struct device *dev)
 756 {
 757         pm_message_t state;
 758         int ret = 0;
 759         state.event = 0;
 760
 761 #ifdef OSPM_GFX_DPK
 762         printk(KERN_ALERT "OSPM_GFX_DPK: %s \n", __func__);
 763 #endif
 764         if (atomic_read(&g_graphics_access_count) || atomic_read(&g_videoenc_access_count)
 765                 || atomic_read(&g_videodec_access_count) || atomic_read(&g_display_access_count)){
 766 #ifdef OSPM_GFX_DPK
 767                 printk(KERN_ALERT "OSPM_GFX_DPK: GFX: %d VEC: %d VED: %d DC: %d DSR: %d \n", atomic_read(&g_graphics_access_count),
 768                         atomic_read(&g_videoenc_access_count), atomic_read(&g_videodec_access_count), atomic_read(&g_display_access_count));
 769 #endif
 770                 return -EBUSY;
 771         }
 772         else
 773                 ret = ospm_power_suspend(gpDrmDevice->pdev, state);
 774
 775         return ret;
 776 }
 777
 778 int psb_runtime_resume(struct device *dev)
 779 {
 780         return 0;
 781 }
 782
 783 int psb_runtime_idle(struct device *dev)
 784 {
 785         /*printk (KERN_ALERT "lvds:%d,mipi:%d\n", dev_priv->is_lvds_on, dev_priv->is_mipi_on);*/
 786         if (atomic_read(&g_graphics_access_count) || atomic_read(&g_videoenc_access_count)
 787                 || atomic_read(&g_videodec_access_count) || atomic_read(&g_display_access_count))
 788                 return 1;
 789         else
 790                 return 0;
 791 }
 792