drivers/gpu/drm/gma500/oaktrail_device.c

   1 // SPDX-License-Identifier: GPL-2.0-only
   2 /**************************************************************************
   3  * Copyright (c) 2011, Intel Corporation.
   4  * All Rights Reserved.
   5  *
   6  **************************************************************************/
   7
   8 #include <linux/backlight.h>
   9 #include <linux/delay.h>
  10 #include <linux/dmi.h>
  11 #include <linux/module.h>
  12
  13 #include <asm/intel-mid.h>
  14 #include <asm/intel_scu_ipc.h>
  15
  16 #include <drm/drm.h>
  17
  18 #include "intel_bios.h"
  19 #include "mid_bios.h"
  20 #include "psb_drv.h"
  21 #include "psb_intel_reg.h"
  22 #include "psb_reg.h"
  23
  24 static int oaktrail_output_init(struct drm_device *dev)
  25 {
  26         struct drm_psb_private *dev_priv = dev->dev_private;
  27         if (dev_priv->iLVDS_enable)
  28                 oaktrail_lvds_init(dev, &dev_priv->mode_dev);
  29         else
  30                 dev_err(dev->dev, "DSI is not supported\n");
  31         if (dev_priv->hdmi_priv)
  32                 oaktrail_hdmi_init(dev, &dev_priv->mode_dev);
  33
  34         psb_intel_sdvo_init(dev, SDVOB);
  35
  36         return 0;
  37 }
  38
  39 /*
  40  *      Provide the low level interfaces for the Moorestown backlight
  41  */
  42
  43 #ifdef CONFIG_BACKLIGHT_CLASS_DEVICE
  44
  45 #define MRST_BLC_MAX_PWM_REG_FREQ           0xFFFF
  46 #define BLC_PWM_PRECISION_FACTOR 100    /* 10000000 */
  47 #define BLC_PWM_FREQ_CALC_CONSTANT 32
  48 #define MHz 1000000
  49 #define BLC_ADJUSTMENT_MAX 100
  50
  51 static struct backlight_device *oaktrail_backlight_device;
  52 static int oaktrail_brightness;
  53
  54 static int oaktrail_set_brightness(struct backlight_device *bd)
  55 {
  56         struct drm_device *dev = bl_get_data(oaktrail_backlight_device);
  57         struct drm_psb_private *dev_priv = dev->dev_private;
  58         int level = bd->props.brightness;
  59         u32 blc_pwm_ctl;
  60         u32 max_pwm_blc;
  61
  62         /* Percentage 1-100% being valid */
  63         if (level < 1)
  64                 level = 1;
  65
  66         if (gma_power_begin(dev, 0)) {
  67                 /* Calculate and set the brightness value */
  68                 max_pwm_blc = REG_READ(BLC_PWM_CTL) >> 16;
  69                 blc_pwm_ctl = level * max_pwm_blc / 100;
  70
  71                 /* Adjust the backlight level with the percent in
  72                  * dev_priv->blc_adj1;
  73                  */
  74                 blc_pwm_ctl = blc_pwm_ctl * dev_priv->blc_adj1;
  75                 blc_pwm_ctl = blc_pwm_ctl / 100;
  76
  77                 /* Adjust the backlight level with the percent in
  78                  * dev_priv->blc_adj2;
  79                  */
  80                 blc_pwm_ctl = blc_pwm_ctl * dev_priv->blc_adj2;
  81                 blc_pwm_ctl = blc_pwm_ctl / 100;
  82
  83                 /* force PWM bit on */
  84                 REG_WRITE(BLC_PWM_CTL2, (0x80000000 | REG_READ(BLC_PWM_CTL2)));
  85                 REG_WRITE(BLC_PWM_CTL, (max_pwm_blc << 16) | blc_pwm_ctl);
  86                 gma_power_end(dev);
  87         }
  88         oaktrail_brightness = level;
  89         return 0;
  90 }
  91
  92 static int oaktrail_get_brightness(struct backlight_device *bd)
  93 {
  94         /* return locally cached var instead of HW read (due to DPST etc.) */
  95         /* FIXME: ideally return actual value in case firmware fiddled with
  96            it */
  97         return oaktrail_brightness;
  98 }
  99
 100 static int device_backlight_init(struct drm_device *dev)
 101 {
 102         struct drm_psb_private *dev_priv = dev->dev_private;
 103         unsigned long core_clock;
 104         u16 bl_max_freq;
 105         uint32_t value;
 106         uint32_t blc_pwm_precision_factor;
 107
 108         dev_priv->blc_adj1 = BLC_ADJUSTMENT_MAX;
 109         dev_priv->blc_adj2 = BLC_ADJUSTMENT_MAX;
 110         bl_max_freq = 256;
 111         /* this needs to be set elsewhere */
 112         blc_pwm_precision_factor = BLC_PWM_PRECISION_FACTOR;
 113
 114         core_clock = dev_priv->core_freq;
 115
 116         value = (core_clock * MHz) / BLC_PWM_FREQ_CALC_CONSTANT;
 117         value *= blc_pwm_precision_factor;
 118         value /= bl_max_freq;
 119         value /= blc_pwm_precision_factor;
 120
 121         if (value > (unsigned long long)MRST_BLC_MAX_PWM_REG_FREQ)
 122                         return -ERANGE;
 123
 124         if (gma_power_begin(dev, false)) {
 125                 REG_WRITE(BLC_PWM_CTL2, (0x80000000 | REG_READ(BLC_PWM_CTL2)));
 126                 REG_WRITE(BLC_PWM_CTL, value | (value << 16));
 127                 gma_power_end(dev);
 128         }
 129         return 0;
 130 }
 131
 132 static const struct backlight_ops oaktrail_ops = {
 133         .get_brightness = oaktrail_get_brightness,
 134         .update_status  = oaktrail_set_brightness,
 135 };
 136
 137 static int oaktrail_backlight_init(struct drm_device *dev)
 138 {
 139         struct drm_psb_private *dev_priv = dev->dev_private;
 140         int ret;
 141         struct backlight_properties props;
 142
 143         memset(&props, 0, sizeof(struct backlight_properties));
 144         props.max_brightness = 100;
 145         props.type = BACKLIGHT_PLATFORM;
 146
 147         oaktrail_backlight_device = backlight_device_register("oaktrail-bl",
 148                                 NULL, (void *)dev, &oaktrail_ops, &props);
 149
 150         if (IS_ERR(oaktrail_backlight_device))
 151                 return PTR_ERR(oaktrail_backlight_device);
 152
 153         ret = device_backlight_init(dev);
 154         if (ret < 0) {
 155                 backlight_device_unregister(oaktrail_backlight_device);
 156                 return ret;
 157         }
 158         oaktrail_backlight_device->props.brightness = 100;
 159         oaktrail_backlight_device->props.max_brightness = 100;
 160         backlight_update_status(oaktrail_backlight_device);
 161         dev_priv->backlight_device = oaktrail_backlight_device;
 162         return 0;
 163 }
 164
 165 #endif
 166
 167 /*
 168  *      Provide the Moorestown specific chip logic and low level methods
 169  *      for power management
 170  */
 171
 172 /**
 173  *      oaktrail_save_display_registers -       save registers lost on suspend
 174  *      @dev: our DRM device
 175  *
 176  *      Save the state we need in order to be able to restore the interface
 177  *      upon resume from suspend
 178  */
 179 static int oaktrail_save_display_registers(struct drm_device *dev)
 180 {
 181         struct drm_psb_private *dev_priv = dev->dev_private;
 182         struct psb_save_area *regs = &dev_priv->regs;
 183         struct psb_pipe *p = &regs->pipe[0];
 184         int i;
 185         u32 pp_stat;
 186
 187         /* Display arbitration control + watermarks */
 188         regs->psb.saveDSPARB = PSB_RVDC32(DSPARB);
 189         regs->psb.saveDSPFW1 = PSB_RVDC32(DSPFW1);
 190         regs->psb.saveDSPFW2 = PSB_RVDC32(DSPFW2);
 191         regs->psb.saveDSPFW3 = PSB_RVDC32(DSPFW3);
 192         regs->psb.saveDSPFW4 = PSB_RVDC32(DSPFW4);
 193         regs->psb.saveDSPFW5 = PSB_RVDC32(DSPFW5);
 194         regs->psb.saveDSPFW6 = PSB_RVDC32(DSPFW6);
 195         regs->psb.saveCHICKENBIT = PSB_RVDC32(DSPCHICKENBIT);
 196
 197         /* Pipe & plane A info */
 198         p->conf = PSB_RVDC32(PIPEACONF);
 199         p->src = PSB_RVDC32(PIPEASRC);
 200         p->fp0 = PSB_RVDC32(MRST_FPA0);
 201         p->fp1 = PSB_RVDC32(MRST_FPA1);
 202         p->dpll = PSB_RVDC32(MRST_DPLL_A);
 203         p->htotal = PSB_RVDC32(HTOTAL_A);
 204         p->hblank = PSB_RVDC32(HBLANK_A);
 205         p->hsync = PSB_RVDC32(HSYNC_A);
 206         p->vtotal = PSB_RVDC32(VTOTAL_A);
 207         p->vblank = PSB_RVDC32(VBLANK_A);
 208         p->vsync = PSB_RVDC32(VSYNC_A);
 209         regs->psb.saveBCLRPAT_A = PSB_RVDC32(BCLRPAT_A);
 210         p->cntr = PSB_RVDC32(DSPACNTR);
 211         p->stride = PSB_RVDC32(DSPASTRIDE);
 212         p->addr = PSB_RVDC32(DSPABASE);
 213         p->surf = PSB_RVDC32(DSPASURF);
 214         p->linoff = PSB_RVDC32(DSPALINOFF);
 215         p->tileoff = PSB_RVDC32(DSPATILEOFF);
 216
 217         /* Save cursor regs */
 218         regs->psb.saveDSPACURSOR_CTRL = PSB_RVDC32(CURACNTR);
 219         regs->psb.saveDSPACURSOR_BASE = PSB_RVDC32(CURABASE);
 220         regs->psb.saveDSPACURSOR_POS = PSB_RVDC32(CURAPOS);
 221
 222         /* Save palette (gamma) */
 223         for (i = 0; i < 256; i++)
 224                 p->palette[i] = PSB_RVDC32(PALETTE_A + (i << 2));
 225
 226         if (dev_priv->hdmi_priv)
 227                 oaktrail_hdmi_save(dev);
 228
 229         /* Save performance state */
 230         regs->psb.savePERF_MODE = PSB_RVDC32(MRST_PERF_MODE);
 231
 232         /* LVDS state */
 233         regs->psb.savePP_CONTROL = PSB_RVDC32(PP_CONTROL);
 234         regs->psb.savePFIT_PGM_RATIOS = PSB_RVDC32(PFIT_PGM_RATIOS);
 235         regs->psb.savePFIT_AUTO_RATIOS = PSB_RVDC32(PFIT_AUTO_RATIOS);
 236         regs->saveBLC_PWM_CTL = PSB_RVDC32(BLC_PWM_CTL);
 237         regs->saveBLC_PWM_CTL2 = PSB_RVDC32(BLC_PWM_CTL2);
 238         regs->psb.saveLVDS = PSB_RVDC32(LVDS);
 239         regs->psb.savePFIT_CONTROL = PSB_RVDC32(PFIT_CONTROL);
 240         regs->psb.savePP_ON_DELAYS = PSB_RVDC32(LVDSPP_ON);
 241         regs->psb.savePP_OFF_DELAYS = PSB_RVDC32(LVDSPP_OFF);
 242         regs->psb.savePP_DIVISOR = PSB_RVDC32(PP_CYCLE);
 243
 244         /* HW overlay */
 245         regs->psb.saveOV_OVADD = PSB_RVDC32(OV_OVADD);
 246         regs->psb.saveOV_OGAMC0 = PSB_RVDC32(OV_OGAMC0);
 247         regs->psb.saveOV_OGAMC1 = PSB_RVDC32(OV_OGAMC1);
 248         regs->psb.saveOV_OGAMC2 = PSB_RVDC32(OV_OGAMC2);
 249         regs->psb.saveOV_OGAMC3 = PSB_RVDC32(OV_OGAMC3);
 250         regs->psb.saveOV_OGAMC4 = PSB_RVDC32(OV_OGAMC4);
 251         regs->psb.saveOV_OGAMC5 = PSB_RVDC32(OV_OGAMC5);
 252
 253         /* DPST registers */
 254         regs->psb.saveHISTOGRAM_INT_CONTROL_REG =
 255                                         PSB_RVDC32(HISTOGRAM_INT_CONTROL);
 256         regs->psb.saveHISTOGRAM_LOGIC_CONTROL_REG =
 257                                         PSB_RVDC32(HISTOGRAM_LOGIC_CONTROL);
 258         regs->psb.savePWM_CONTROL_LOGIC = PSB_RVDC32(PWM_CONTROL_LOGIC);
 259
 260         if (dev_priv->iLVDS_enable) {
 261                 /* Shut down the panel */
 262                 PSB_WVDC32(0, PP_CONTROL);
 263
 264                 do {
 265                         pp_stat = PSB_RVDC32(PP_STATUS);
 266                 } while (pp_stat & 0x80000000);
 267
 268                 /* Turn off the plane */
 269                 PSB_WVDC32(0x58000000, DSPACNTR);
 270                 /* Trigger the plane disable */
 271                 PSB_WVDC32(0, DSPASURF);
 272
 273                 /* Wait ~4 ticks */
 274                 msleep(4);
 275
 276                 /* Turn off pipe */
 277                 PSB_WVDC32(0x0, PIPEACONF);
 278                 /* Wait ~8 ticks */
 279                 msleep(8);
 280
 281                 /* Turn off PLLs */
 282                 PSB_WVDC32(0, MRST_DPLL_A);
 283         }
 284         return 0;
 285 }
 286
 287 /**
 288  *      oaktrail_restore_display_registers      -       restore lost register state
 289  *      @dev: our DRM device
 290  *
 291  *      Restore register state that was lost during suspend and resume.
 292  */
 293 static int oaktrail_restore_display_registers(struct drm_device *dev)
 294 {
 295         struct drm_psb_private *dev_priv = dev->dev_private;
 296         struct psb_save_area *regs = &dev_priv->regs;
 297         struct psb_pipe *p = &regs->pipe[0];
 298         u32 pp_stat;
 299         int i;
 300
 301         /* Display arbitration + watermarks */
 302         PSB_WVDC32(regs->psb.saveDSPARB, DSPARB);
 303         PSB_WVDC32(regs->psb.saveDSPFW1, DSPFW1);
 304         PSB_WVDC32(regs->psb.saveDSPFW2, DSPFW2);
 305         PSB_WVDC32(regs->psb.saveDSPFW3, DSPFW3);
 306         PSB_WVDC32(regs->psb.saveDSPFW4, DSPFW4);
 307         PSB_WVDC32(regs->psb.saveDSPFW5, DSPFW5);
 308         PSB_WVDC32(regs->psb.saveDSPFW6, DSPFW6);
 309         PSB_WVDC32(regs->psb.saveCHICKENBIT, DSPCHICKENBIT);
 310
 311         /* Make sure VGA plane is off. it initializes to on after reset!*/
 312         PSB_WVDC32(0x80000000, VGACNTRL);
 313
 314         /* set the plls */
 315         PSB_WVDC32(p->fp0, MRST_FPA0);
 316         PSB_WVDC32(p->fp1, MRST_FPA1);
 317
 318         /* Actually enable it */
 319         PSB_WVDC32(p->dpll, MRST_DPLL_A);
 320         udelay(150);
 321
 322         /* Restore mode */
 323         PSB_WVDC32(p->htotal, HTOTAL_A);
 324         PSB_WVDC32(p->hblank, HBLANK_A);
 325         PSB_WVDC32(p->hsync, HSYNC_A);
 326         PSB_WVDC32(p->vtotal, VTOTAL_A);
 327         PSB_WVDC32(p->vblank, VBLANK_A);
 328         PSB_WVDC32(p->vsync, VSYNC_A);
 329         PSB_WVDC32(p->src, PIPEASRC);
 330         PSB_WVDC32(regs->psb.saveBCLRPAT_A, BCLRPAT_A);
 331
 332         /* Restore performance mode*/
 333         PSB_WVDC32(regs->psb.savePERF_MODE, MRST_PERF_MODE);
 334
 335         /* Enable the pipe*/
 336         if (dev_priv->iLVDS_enable)
 337                 PSB_WVDC32(p->conf, PIPEACONF);
 338
 339         /* Set up the plane*/
 340         PSB_WVDC32(p->linoff, DSPALINOFF);
 341         PSB_WVDC32(p->stride, DSPASTRIDE);
 342         PSB_WVDC32(p->tileoff, DSPATILEOFF);
 343
 344         /* Enable the plane */
 345         PSB_WVDC32(p->cntr, DSPACNTR);
 346         PSB_WVDC32(p->surf, DSPASURF);
 347
 348         /* Enable Cursor A */
 349         PSB_WVDC32(regs->psb.saveDSPACURSOR_CTRL, CURACNTR);
 350         PSB_WVDC32(regs->psb.saveDSPACURSOR_POS, CURAPOS);
 351         PSB_WVDC32(regs->psb.saveDSPACURSOR_BASE, CURABASE);
 352
 353         /* Restore palette (gamma) */
 354         for (i = 0; i < 256; i++)
 355                 PSB_WVDC32(p->palette[i], PALETTE_A + (i << 2));
 356
 357         if (dev_priv->hdmi_priv)
 358                 oaktrail_hdmi_restore(dev);
 359
 360         if (dev_priv->iLVDS_enable) {
 361                 PSB_WVDC32(regs->saveBLC_PWM_CTL2, BLC_PWM_CTL2);
 362                 PSB_WVDC32(regs->psb.saveLVDS, LVDS); /*port 61180h*/
 363                 PSB_WVDC32(regs->psb.savePFIT_CONTROL, PFIT_CONTROL);
 364                 PSB_WVDC32(regs->psb.savePFIT_PGM_RATIOS, PFIT_PGM_RATIOS);
 365                 PSB_WVDC32(regs->psb.savePFIT_AUTO_RATIOS, PFIT_AUTO_RATIOS);
 366                 PSB_WVDC32(regs->saveBLC_PWM_CTL, BLC_PWM_CTL);
 367                 PSB_WVDC32(regs->psb.savePP_ON_DELAYS, LVDSPP_ON);
 368                 PSB_WVDC32(regs->psb.savePP_OFF_DELAYS, LVDSPP_OFF);
 369                 PSB_WVDC32(regs->psb.savePP_DIVISOR, PP_CYCLE);
 370                 PSB_WVDC32(regs->psb.savePP_CONTROL, PP_CONTROL);
 371         }
 372
 373         /* Wait for cycle delay */
 374         do {
 375                 pp_stat = PSB_RVDC32(PP_STATUS);
 376         } while (pp_stat & 0x08000000);
 377
 378         /* Wait for panel power up */
 379         do {
 380                 pp_stat = PSB_RVDC32(PP_STATUS);
 381         } while (pp_stat & 0x10000000);
 382
 383         /* Restore HW overlay */
 384         PSB_WVDC32(regs->psb.saveOV_OVADD, OV_OVADD);
 385         PSB_WVDC32(regs->psb.saveOV_OGAMC0, OV_OGAMC0);
 386         PSB_WVDC32(regs->psb.saveOV_OGAMC1, OV_OGAMC1);
 387         PSB_WVDC32(regs->psb.saveOV_OGAMC2, OV_OGAMC2);
 388         PSB_WVDC32(regs->psb.saveOV_OGAMC3, OV_OGAMC3);
 389         PSB_WVDC32(regs->psb.saveOV_OGAMC4, OV_OGAMC4);
 390         PSB_WVDC32(regs->psb.saveOV_OGAMC5, OV_OGAMC5);
 391
 392         /* DPST registers */
 393         PSB_WVDC32(regs->psb.saveHISTOGRAM_INT_CONTROL_REG,
 394                                                 HISTOGRAM_INT_CONTROL);
 395         PSB_WVDC32(regs->psb.saveHISTOGRAM_LOGIC_CONTROL_REG,
 396                                                 HISTOGRAM_LOGIC_CONTROL);
 397         PSB_WVDC32(regs->psb.savePWM_CONTROL_LOGIC, PWM_CONTROL_LOGIC);
 398
 399         return 0;
 400 }
 401
 402 /**
 403  *      oaktrail_power_down     -       power down the display island
 404  *      @dev: our DRM device
 405  *
 406  *      Power down the display interface of our device
 407  */
 408 static int oaktrail_power_down(struct drm_device *dev)
 409 {
 410         struct drm_psb_private *dev_priv = dev->dev_private;
 411         u32 pwr_mask ;
 412         u32 pwr_sts;
 413
 414         pwr_mask = PSB_PWRGT_DISPLAY_MASK;
 415         outl(pwr_mask, dev_priv->ospm_base + PSB_PM_SSC);
 416
 417         while (true) {
 418                 pwr_sts = inl(dev_priv->ospm_base + PSB_PM_SSS);
 419                 if ((pwr_sts & pwr_mask) == pwr_mask)
 420                         break;
 421                 else
 422                         udelay(10);
 423         }
 424         return 0;
 425 }
 426
 427 /*
 428  * oaktrail_power_up
 429  *
 430  * Restore power to the specified island(s) (powergating)
 431  */
 432 static int oaktrail_power_up(struct drm_device *dev)
 433 {
 434         struct drm_psb_private *dev_priv = dev->dev_private;
 435         u32 pwr_mask = PSB_PWRGT_DISPLAY_MASK;
 436         u32 pwr_sts, pwr_cnt;
 437
 438         pwr_cnt = inl(dev_priv->ospm_base + PSB_PM_SSC);
 439         pwr_cnt &= ~pwr_mask;
 440         outl(pwr_cnt, (dev_priv->ospm_base + PSB_PM_SSC));
 441
 442         while (true) {
 443                 pwr_sts = inl(dev_priv->ospm_base + PSB_PM_SSS);
 444                 if ((pwr_sts & pwr_mask) == 0)
 445                         break;
 446                 else
 447                         udelay(10);
 448         }
 449         return 0;
 450 }
 451
 452 /* Oaktrail */
 453 static const struct psb_offset oaktrail_regmap[2] = {
 454         {
 455                 .fp0 = MRST_FPA0,
 456                 .fp1 = MRST_FPA1,
 457                 .cntr = DSPACNTR,
 458                 .conf = PIPEACONF,
 459                 .src = PIPEASRC,
 460                 .dpll = MRST_DPLL_A,
 461                 .htotal = HTOTAL_A,
 462                 .hblank = HBLANK_A,
 463                 .hsync = HSYNC_A,
 464                 .vtotal = VTOTAL_A,
 465                 .vblank = VBLANK_A,
 466                 .vsync = VSYNC_A,
 467                 .stride = DSPASTRIDE,
 468                 .size = DSPASIZE,
 469                 .pos = DSPAPOS,
 470                 .surf = DSPASURF,
 471                 .addr = MRST_DSPABASE,
 472                 .base = MRST_DSPABASE,
 473                 .status = PIPEASTAT,
 474                 .linoff = DSPALINOFF,
 475                 .tileoff = DSPATILEOFF,
 476                 .palette = PALETTE_A,
 477         },
 478         {
 479                 .fp0 = FPB0,
 480                 .fp1 = FPB1,
 481                 .cntr = DSPBCNTR,
 482                 .conf = PIPEBCONF,
 483                 .src = PIPEBSRC,
 484                 .dpll = DPLL_B,
 485                 .htotal = HTOTAL_B,
 486                 .hblank = HBLANK_B,
 487                 .hsync = HSYNC_B,
 488                 .vtotal = VTOTAL_B,
 489                 .vblank = VBLANK_B,
 490                 .vsync = VSYNC_B,
 491                 .stride = DSPBSTRIDE,
 492                 .size = DSPBSIZE,
 493                 .pos = DSPBPOS,
 494                 .surf = DSPBSURF,
 495                 .addr = DSPBBASE,
 496                 .base = DSPBBASE,
 497                 .status = PIPEBSTAT,
 498                 .linoff = DSPBLINOFF,
 499                 .tileoff = DSPBTILEOFF,
 500                 .palette = PALETTE_B,
 501         },
 502 };
 503
 504 static int oaktrail_chip_setup(struct drm_device *dev)
 505 {
 506         struct drm_psb_private *dev_priv = dev->dev_private;
 507         int ret;
 508
 509         if (pci_enable_msi(dev->pdev))
 510                 dev_warn(dev->dev, "Enabling MSI failed!\n");
 511
 512         dev_priv->regmap = oaktrail_regmap;
 513
 514         ret = mid_chip_setup(dev);
 515         if (ret < 0)
 516                 return ret;
 517         if (!dev_priv->has_gct) {
 518                 /* Now pull the BIOS data */
 519                 psb_intel_opregion_init(dev);
 520                 psb_intel_init_bios(dev);
 521         }
 522         gma_intel_setup_gmbus(dev);
 523         oaktrail_hdmi_setup(dev);
 524         return 0;
 525 }
 526
 527 static void oaktrail_teardown(struct drm_device *dev)
 528 {
 529         struct drm_psb_private *dev_priv = dev->dev_private;
 530
 531         gma_intel_teardown_gmbus(dev);
 532         oaktrail_hdmi_teardown(dev);
 533         if (!dev_priv->has_gct)
 534                 psb_intel_destroy_bios(dev);
 535 }
 536
 537 const struct psb_ops oaktrail_chip_ops = {
 538         .name = "Oaktrail",
 539         .pipes = 2,
 540         .crtcs = 2,
 541         .hdmi_mask = (1 << 1),
 542         .lvds_mask = (1 << 0),
 543         .sdvo_mask = (1 << 1),
 544         .cursor_needs_phys = 0,
 545         .sgx_offset = MRST_SGX_OFFSET,
 546
 547         .chip_setup = oaktrail_chip_setup,
 548         .chip_teardown = oaktrail_teardown,
 549         .crtc_helper = &oaktrail_helper_funcs,
 550         .crtc_funcs = &psb_intel_crtc_funcs,
 551
 552         .output_init = oaktrail_output_init,
 553
 554 #ifdef CONFIG_BACKLIGHT_CLASS_DEVICE
 555         .backlight_init = oaktrail_backlight_init,
 556 #endif
 557
 558         .save_regs = oaktrail_save_display_registers,
 559         .restore_regs = oaktrail_restore_display_registers,
 560         .save_crtc = gma_crtc_save,
 561         .restore_crtc = gma_crtc_restore,
 562         .power_down = oaktrail_power_down,
 563         .power_up = oaktrail_power_up,
 564
 565         .i2c_bus = 1,
 566 };