drivers/gpu/drm/i915/intel_drv.h

   1 /*
   2  * Copyright (c) 2006 Dave Airlie <airlied@linux.ie>
   3  * Copyright (c) 2007-2008 Intel Corporation
   4  *   Jesse Barnes <jesse.barnes@intel.com>
   5  *
   6  * Permission is hereby granted, free of charge, to any person obtaining a
   7  * copy of this software and associated documentation files (the "Software"),
   8  * to deal in the Software without restriction, including without limitation
   9  * the rights to use, copy, modify, merge, publish, distribute, sublicense,
  10  * and/or sell copies of the Software, and to permit persons to whom the
  11  * Software is furnished to do so, subject to the following conditions:
  12  *
  13  * The above copyright notice and this permission notice (including the next
  14  * paragraph) shall be included in all copies or substantial portions of the
  15  * Software.
  16  *
  17  * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
  18  * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
  19  * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.  IN NO EVENT SHALL
  20  * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
  21  * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
  22  * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS
  23  * IN THE SOFTWARE.
  24  */
  25 #ifndef __INTEL_DRV_H__
  26 #define __INTEL_DRV_H__
  27
  28 #include <linux/i2c.h>
  29 #include "i915_drm.h"
  30 #include "i915_drv.h"
  31 #include "drm_crtc.h"
  32 #include "drm_crtc_helper.h"
  33 #include "drm_fb_helper.h"
  34 #include "drm_dp_helper.h"
  35
  36 #define _wait_for(COND, MS, W) ({ \
  37         unsigned long timeout__ = jiffies + msecs_to_jiffies(MS);       \
  38         int ret__ = 0;                                                  \
  39         while (!(COND)) {                                               \
  40                 if (time_after(jiffies, timeout__)) {                   \
  41                         ret__ = -ETIMEDOUT;                             \
  42                         break;                                          \
  43                 }                                                       \
  44                 if (W && drm_can_sleep())  {                            \
  45                         msleep(W);                                      \
  46                 } else {                                                \
  47                         cpu_relax();                                    \
  48                 }                                                       \
  49         }                                                               \
  50         ret__;                                                          \
  51 })
  52
  53 #define wait_for_atomic_us(COND, US) ({ \
  54         unsigned long timeout__ = jiffies + usecs_to_jiffies(US);       \
  55         int ret__ = 0;                                                  \
  56         while (!(COND)) {                                               \
  57                 if (time_after(jiffies, timeout__)) {                   \
  58                         ret__ = -ETIMEDOUT;                             \
  59                         break;                                          \
  60                 }                                                       \
  61                 cpu_relax();                                            \
  62         }                                                               \
  63         ret__;                                                          \
  64 })
  65
  66 #define wait_for(COND, MS) _wait_for(COND, MS, 1)
  67 #define wait_for_atomic(COND, MS) _wait_for(COND, MS, 0)
  68
  69 #define KHz(x) (1000*x)
  70 #define MHz(x) KHz(1000*x)
  71
  72 /*
  73  * Display related stuff
  74  */
  75
  76 /* store information about an Ixxx DVO */
  77 /* The i830->i865 use multiple DVOs with multiple i2cs */
  78 /* the i915, i945 have a single sDVO i2c bus - which is different */
  79 #define MAX_OUTPUTS 6
  80 /* maximum connectors per crtcs in the mode set */
  81 #define INTELFB_CONN_LIMIT 4
  82
  83 #define INTEL_I2C_BUS_DVO 1
  84 #define INTEL_I2C_BUS_SDVO 2
  85
  86 /* these are outputs from the chip - integrated only
  87    external chips are via DVO or SDVO output */
  88 #define INTEL_OUTPUT_UNUSED 0
  89 #define INTEL_OUTPUT_ANALOG 1
  90 #define INTEL_OUTPUT_DVO 2
  91 #define INTEL_OUTPUT_SDVO 3
  92 #define INTEL_OUTPUT_LVDS 4
  93 #define INTEL_OUTPUT_TVOUT 5
  94 #define INTEL_OUTPUT_HDMI 6
  95 #define INTEL_OUTPUT_DISPLAYPORT 7
  96 #define INTEL_OUTPUT_EDP 8
  97
  98 #define INTEL_DVO_CHIP_NONE 0
  99 #define INTEL_DVO_CHIP_LVDS 1
 100 #define INTEL_DVO_CHIP_TMDS 2
 101 #define INTEL_DVO_CHIP_TVOUT 4
 102
 103 /* drm_display_mode->private_flags */
 104 #define INTEL_MODE_PIXEL_MULTIPLIER_SHIFT (0x0)
 105 #define INTEL_MODE_PIXEL_MULTIPLIER_MASK (0xf << INTEL_MODE_PIXEL_MULTIPLIER_SHIFT)
 106 #define INTEL_MODE_DP_FORCE_6BPC (0x10)
 107 /* This flag must be set by the encoder's mode_fixup if it changes the crtc
 108  * timings in the mode to prevent the crtc fixup from overwriting them.
 109  * Currently only lvds needs that. */
 110 #define INTEL_MODE_CRTC_TIMINGS_SET (0x20)
 111
 112 static inline void
 113 intel_mode_set_pixel_multiplier(struct drm_display_mode *mode,
 114                                 int multiplier)
 115 {
 116         mode->clock *= multiplier;
 117         mode->private_flags |= multiplier;
 118 }
 119
 120 static inline int
 121 intel_mode_get_pixel_multiplier(const struct drm_display_mode *mode)
 122 {
 123         return (mode->private_flags & INTEL_MODE_PIXEL_MULTIPLIER_MASK) >> INTEL_MODE_PIXEL_MULTIPLIER_SHIFT;
 124 }
 125
 126 struct intel_framebuffer {
 127         struct drm_framebuffer base;
 128         struct drm_i915_gem_object *obj;
 129 };
 130
 131 struct intel_fbdev {
 132         struct drm_fb_helper helper;
 133         struct intel_framebuffer ifb;
 134         struct list_head fbdev_list;
 135         struct drm_display_mode *our_mode;
 136 };
 137
 138 struct intel_encoder {
 139         struct drm_encoder base;
 140         /*
 141          * The new crtc this encoder will be driven from. Only differs from
 142          * base->crtc while a modeset is in progress.
 143          */
 144         struct intel_crtc *new_crtc;
 145
 146         int type;
 147         bool needs_tv_clock;
 148         /*
 149          * Intel hw has only one MUX where encoders could be clone, hence a
 150          * simple flag is enough to compute the possible_clones mask.
 151          */
 152         bool cloneable;
 153         bool connectors_active;
 154         void (*hot_plug)(struct intel_encoder *);
 155         void (*pre_enable)(struct intel_encoder *);
 156         void (*enable)(struct intel_encoder *);
 157         void (*disable)(struct intel_encoder *);
 158         void (*post_disable)(struct intel_encoder *);
 159         /* Read out the current hw state of this connector, returning true if
 160          * the encoder is active. If the encoder is enabled it also set the pipe
 161          * it is connected to in the pipe parameter. */
 162         bool (*get_hw_state)(struct intel_encoder *, enum pipe *pipe);
 163         int crtc_mask;
 164 };
 165
 166 struct intel_connector {
 167         struct drm_connector base;
 168         /*
 169          * The fixed encoder this connector is connected to.
 170          */
 171         struct intel_encoder *encoder;
 172
 173         /*
 174          * The new encoder this connector will be driven. Only differs from
 175          * encoder while a modeset is in progress.
 176          */
 177         struct intel_encoder *new_encoder;
 178
 179         /* Reads out the current hw, returning true if the connector is enabled
 180          * and active (i.e. dpms ON state). */
 181         bool (*get_hw_state)(struct intel_connector *);
 182 };
 183
 184 struct intel_crtc {
 185         struct drm_crtc base;
 186         enum pipe pipe;
 187         enum plane plane;
 188         u8 lut_r[256], lut_g[256], lut_b[256];
 189         /*
 190          * Whether the crtc and the connected output pipeline is active. Implies
 191          * that crtc->enabled is set, i.e. the current mode configuration has
 192          * some outputs connected to this crtc.
 193          */
 194         bool active;
 195         bool primary_disabled; /* is the crtc obscured by a plane? */
 196         bool lowfreq_avail;
 197         struct intel_overlay *overlay;
 198         struct intel_unpin_work *unpin_work;
 199         int fdi_lanes;
 200
 201         /* Display surface base address adjustement for pageflips. Note that on
 202          * gen4+ this only adjusts up to a tile, offsets within a tile are
 203          * handled in the hw itself (with the TILEOFF register). */
 204         unsigned long dspaddr_offset;
 205
 206         struct drm_i915_gem_object *cursor_bo;
 207         uint32_t cursor_addr;
 208         int16_t cursor_x, cursor_y;
 209         int16_t cursor_width, cursor_height;
 210         bool cursor_visible;
 211         unsigned int bpp;
 212
 213         /* We can share PLLs across outputs if the timings match */
 214         struct intel_pch_pll *pch_pll;
 215 };
 216
 217 struct intel_plane {
 218         struct drm_plane base;
 219         enum pipe pipe;
 220         struct drm_i915_gem_object *obj;
 221         int max_downscale;
 222         u32 lut_r[1024], lut_g[1024], lut_b[1024];
 223         void (*update_plane)(struct drm_plane *plane,
 224                              struct drm_framebuffer *fb,
 225                              struct drm_i915_gem_object *obj,
 226                              int crtc_x, int crtc_y,
 227                              unsigned int crtc_w, unsigned int crtc_h,
 228                              uint32_t x, uint32_t y,
 229                              uint32_t src_w, uint32_t src_h);
 230         void (*disable_plane)(struct drm_plane *plane);
 231         int (*update_colorkey)(struct drm_plane *plane,
 232                                struct drm_intel_sprite_colorkey *key);
 233         void (*get_colorkey)(struct drm_plane *plane,
 234                              struct drm_intel_sprite_colorkey *key);
 235 };
 236
 237 struct intel_watermark_params {
 238         unsigned long fifo_size;
 239         unsigned long max_wm;
 240         unsigned long default_wm;
 241         unsigned long guard_size;
 242         unsigned long cacheline_size;
 243 };
 244
 245 struct cxsr_latency {
 246         int is_desktop;
 247         int is_ddr3;
 248         unsigned long fsb_freq;
 249         unsigned long mem_freq;
 250         unsigned long display_sr;
 251         unsigned long display_hpll_disable;
 252         unsigned long cursor_sr;
 253         unsigned long cursor_hpll_disable;
 254 };
 255
 256 #define to_intel_crtc(x) container_of(x, struct intel_crtc, base)
 257 #define to_intel_connector(x) container_of(x, struct intel_connector, base)
 258 #define to_intel_encoder(x) container_of(x, struct intel_encoder, base)
 259 #define to_intel_framebuffer(x) container_of(x, struct intel_framebuffer, base)
 260 #define to_intel_plane(x) container_of(x, struct intel_plane, base)
 261
 262 #define DIP_HEADER_SIZE 5
 263
 264 #define DIP_TYPE_AVI    0x82
 265 #define DIP_VERSION_AVI 0x2
 266 #define DIP_LEN_AVI     13
 267 #define DIP_AVI_PR_1    0
 268 #define DIP_AVI_PR_2    1
 269
 270 #define DIP_TYPE_SPD    0x83
 271 #define DIP_VERSION_SPD 0x1
 272 #define DIP_LEN_SPD     25
 273 #define DIP_SPD_UNKNOWN 0
 274 #define DIP_SPD_DSTB    0x1
 275 #define DIP_SPD_DVDP    0x2
 276 #define DIP_SPD_DVHS    0x3
 277 #define DIP_SPD_HDDVR   0x4
 278 #define DIP_SPD_DVC     0x5
 279 #define DIP_SPD_DSC     0x6
 280 #define DIP_SPD_VCD     0x7
 281 #define DIP_SPD_GAME    0x8
 282 #define DIP_SPD_PC      0x9
 283 #define DIP_SPD_BD      0xa
 284 #define DIP_SPD_SCD     0xb
 285
 286 struct dip_infoframe {
 287         uint8_t type;           /* HB0 */
 288         uint8_t ver;            /* HB1 */
 289         uint8_t len;            /* HB2 - body len, not including checksum */
 290         uint8_t ecc;            /* Header ECC */
 291         uint8_t checksum;       /* PB0 */
 292         union {
 293                 struct {
 294                         /* PB1 - Y 6:5, A 4:4, B 3:2, S 1:0 */
 295                         uint8_t Y_A_B_S;
 296                         /* PB2 - C 7:6, M 5:4, R 3:0 */
 297                         uint8_t C_M_R;
 298                         /* PB3 - ITC 7:7, EC 6:4, Q 3:2, SC 1:0 */
 299                         uint8_t ITC_EC_Q_SC;
 300                         /* PB4 - VIC 6:0 */
 301                         uint8_t VIC;
 302                         /* PB5 - YQ 7:6, CN 5:4, PR 3:0 */
 303                         uint8_t YQ_CN_PR;
 304                         /* PB6 to PB13 */
 305                         uint16_t top_bar_end;
 306                         uint16_t bottom_bar_start;
 307                         uint16_t left_bar_end;
 308                         uint16_t right_bar_start;
 309                 } __attribute__ ((packed)) avi;
 310                 struct {
 311                         uint8_t vn[8];
 312                         uint8_t pd[16];
 313                         uint8_t sdi;
 314                 } __attribute__ ((packed)) spd;
 315                 uint8_t payload[27];
 316         } __attribute__ ((packed)) body;
 317 } __attribute__((packed));
 318
 319 struct intel_hdmi {
 320         struct intel_encoder base;
 321         u32 sdvox_reg;
 322         int ddc_bus;
 323         int ddi_port;
 324         uint32_t color_range;
 325         bool has_hdmi_sink;
 326         bool has_audio;
 327         enum hdmi_force_audio force_audio;
 328         void (*write_infoframe)(struct drm_encoder *encoder,
 329                                 struct dip_infoframe *frame);
 330         void (*set_infoframes)(struct drm_encoder *encoder,
 331                                struct drm_display_mode *adjusted_mode);
 332 };
 333
 334 #define DP_RECEIVER_CAP_SIZE            0xf
 335 #define DP_MAX_DOWNSTREAM_PORTS         0x10
 336 #define DP_LINK_CONFIGURATION_SIZE      9
 337
 338 struct intel_dp {
 339         struct intel_encoder base;
 340         uint32_t output_reg;
 341         uint32_t DP;
 342         uint8_t  link_configuration[DP_LINK_CONFIGURATION_SIZE];
 343         bool has_audio;
 344         enum hdmi_force_audio force_audio;
 345         enum port port;
 346         uint32_t color_range;
 347         uint8_t link_bw;
 348         uint8_t lane_count;
 349         uint8_t dpcd[DP_RECEIVER_CAP_SIZE];
 350         uint8_t downstream_ports[DP_MAX_DOWNSTREAM_PORTS];
 351         struct i2c_adapter adapter;
 352         struct i2c_algo_dp_aux_data algo;
 353         bool is_pch_edp;
 354         uint8_t train_set[4];
 355         int panel_power_up_delay;
 356         int panel_power_down_delay;
 357         int panel_power_cycle_delay;
 358         int backlight_on_delay;
 359         int backlight_off_delay;
 360         struct drm_display_mode *panel_fixed_mode;  /* for eDP */
 361         struct delayed_work panel_vdd_work;
 362         bool want_panel_vdd;
 363         struct edid *edid; /* cached EDID for eDP */
 364         int edid_mode_count;
 365 };
 366
 367 static inline struct drm_crtc *
 368 intel_get_crtc_for_pipe(struct drm_device *dev, int pipe)
 369 {
 370         struct drm_i915_private *dev_priv = dev->dev_private;
 371         return dev_priv->pipe_to_crtc_mapping[pipe];
 372 }
 373
 374 static inline struct drm_crtc *
 375 intel_get_crtc_for_plane(struct drm_device *dev, int plane)
 376 {
 377         struct drm_i915_private *dev_priv = dev->dev_private;
 378         return dev_priv->plane_to_crtc_mapping[plane];
 379 }
 380
 381 struct intel_unpin_work {
 382         struct work_struct work;
 383         struct drm_device *dev;
 384         struct drm_i915_gem_object *old_fb_obj;
 385         struct drm_i915_gem_object *pending_flip_obj;
 386         struct drm_pending_vblank_event *event;
 387         int pending;
 388         bool enable_stall_check;
 389 };
 390
 391 struct intel_fbc_work {
 392         struct delayed_work work;
 393         struct drm_crtc *crtc;
 394         struct drm_framebuffer *fb;
 395         int interval;
 396 };
 397
 398 int intel_connector_update_modes(struct drm_connector *connector,
 399                                 struct edid *edid);
 400 int intel_ddc_get_modes(struct drm_connector *c, struct i2c_adapter *adapter);
 401
 402 extern void intel_attach_force_audio_property(struct drm_connector *connector);
 403 extern void intel_attach_broadcast_rgb_property(struct drm_connector *connector);
 404
 405 extern void intel_crt_init(struct drm_device *dev);
 406 extern void intel_hdmi_init(struct drm_device *dev,
 407                             int sdvox_reg, enum port port);
 408 extern struct intel_hdmi *enc_to_intel_hdmi(struct drm_encoder *encoder);
 409 extern void intel_dip_infoframe_csum(struct dip_infoframe *avi_if);
 410 extern bool intel_sdvo_init(struct drm_device *dev, uint32_t sdvo_reg,
 411                             bool is_sdvob);
 412 extern void intel_dvo_init(struct drm_device *dev);
 413 extern void intel_tv_init(struct drm_device *dev);
 414 extern void intel_mark_busy(struct drm_device *dev);
 415 extern void intel_mark_idle(struct drm_device *dev);
 416 extern void intel_mark_fb_busy(struct drm_i915_gem_object *obj);
 417 extern void intel_mark_fb_idle(struct drm_i915_gem_object *obj);
 418 extern bool intel_lvds_init(struct drm_device *dev);
 419 extern void intel_dp_init(struct drm_device *dev, int output_reg,
 420                           enum port port);
 421 void
 422 intel_dp_set_m_n(struct drm_crtc *crtc, struct drm_display_mode *mode,
 423                  struct drm_display_mode *adjusted_mode);
 424 extern bool intel_dpd_is_edp(struct drm_device *dev);
 425 extern void intel_edp_link_config(struct intel_encoder *, int *, int *);
 426 extern int intel_edp_target_clock(struct intel_encoder *,
 427                                   struct drm_display_mode *mode);
 428 extern bool intel_encoder_is_pch_edp(struct drm_encoder *encoder);
 429 extern int intel_plane_init(struct drm_device *dev, enum pipe pipe);
 430 extern void intel_flush_display_plane(struct drm_i915_private *dev_priv,
 431                                       enum plane plane);
 432
 433 /* intel_panel.c */
 434 extern void intel_fixed_panel_mode(struct drm_display_mode *fixed_mode,
 435                                    struct drm_display_mode *adjusted_mode);
 436 extern void intel_pch_panel_fitting(struct drm_device *dev,
 437                                     int fitting_mode,
 438                                     const struct drm_display_mode *mode,
 439                                     struct drm_display_mode *adjusted_mode);
 440 extern u32 intel_panel_get_max_backlight(struct drm_device *dev);
 441 extern void intel_panel_set_backlight(struct drm_device *dev, u32 level);
 442 extern int intel_panel_setup_backlight(struct drm_device *dev);
 443 extern void intel_panel_enable_backlight(struct drm_device *dev,
 444                                          enum pipe pipe);
 445 extern void intel_panel_disable_backlight(struct drm_device *dev);
 446 extern void intel_panel_destroy_backlight(struct drm_device *dev);
 447 extern enum drm_connector_status intel_panel_detect(struct drm_device *dev);
 448
 449 struct intel_set_config {
 450         struct drm_encoder **save_connector_encoders;
 451         struct drm_crtc **save_encoder_crtcs;
 452
 453         bool fb_changed;
 454         bool mode_changed;
 455 };
 456
 457 extern bool intel_set_mode(struct drm_crtc *crtc, struct drm_display_mode *mode,
 458                            int x, int y, struct drm_framebuffer *old_fb);
 459 extern void intel_modeset_disable(struct drm_device *dev);
 460 extern void intel_crtc_load_lut(struct drm_crtc *crtc);
 461 extern void intel_crtc_update_dpms(struct drm_crtc *crtc);
 462 extern void intel_encoder_noop(struct drm_encoder *encoder);
 463 extern void intel_encoder_destroy(struct drm_encoder *encoder);
 464 extern void intel_encoder_dpms(struct intel_encoder *encoder, int mode);
 465 extern bool intel_encoder_check_is_cloned(struct intel_encoder *encoder);
 466 extern void intel_connector_dpms(struct drm_connector *, int mode);
 467 extern bool intel_connector_get_hw_state(struct intel_connector *connector);
 468 extern void intel_modeset_check_state(struct drm_device *dev);
 469
 470
 471 static inline struct intel_encoder *intel_attached_encoder(struct drm_connector *connector)
 472 {
 473         return to_intel_connector(connector)->encoder;
 474 }
 475
 476 extern void intel_connector_attach_encoder(struct intel_connector *connector,
 477                                            struct intel_encoder *encoder);
 478 extern struct drm_encoder *intel_best_encoder(struct drm_connector *connector);
 479
 480 extern struct drm_display_mode *intel_crtc_mode_get(struct drm_device *dev,
 481                                                     struct drm_crtc *crtc);
 482 int intel_get_pipe_from_crtc_id(struct drm_device *dev, void *data,
 483                                 struct drm_file *file_priv);
 484 extern void intel_wait_for_vblank(struct drm_device *dev, int pipe);
 485 extern void intel_wait_for_pipe_off(struct drm_device *dev, int pipe);
 486
 487 struct intel_load_detect_pipe {
 488         struct drm_framebuffer *release_fb;
 489         bool load_detect_temp;
 490         int dpms_mode;
 491 };
 492 extern bool intel_get_load_detect_pipe(struct drm_connector *connector,
 493                                        struct drm_display_mode *mode,
 494                                        struct intel_load_detect_pipe *old);
 495 extern void intel_release_load_detect_pipe(struct drm_connector *connector,
 496                                            struct intel_load_detect_pipe *old);
 497
 498 extern void intelfb_restore(void);
 499 extern void intel_crtc_fb_gamma_set(struct drm_crtc *crtc, u16 red, u16 green,
 500                                     u16 blue, int regno);
 501 extern void intel_crtc_fb_gamma_get(struct drm_crtc *crtc, u16 *red, u16 *green,
 502                                     u16 *blue, int regno);
 503 extern void intel_enable_clock_gating(struct drm_device *dev);
 504
 505 extern int intel_pin_and_fence_fb_obj(struct drm_device *dev,
 506                                       struct drm_i915_gem_object *obj,
 507                                       struct intel_ring_buffer *pipelined);
 508 extern void intel_unpin_fb_obj(struct drm_i915_gem_object *obj);
 509
 510 extern int intel_framebuffer_init(struct drm_device *dev,
 511                                   struct intel_framebuffer *ifb,
 512                                   struct drm_mode_fb_cmd2 *mode_cmd,
 513                                   struct drm_i915_gem_object *obj);
 514 extern int intel_fbdev_init(struct drm_device *dev);
 515 extern void intel_fbdev_fini(struct drm_device *dev);
 516 extern void intel_fbdev_set_suspend(struct drm_device *dev, int state);
 517 extern void intel_prepare_page_flip(struct drm_device *dev, int plane);
 518 extern void intel_finish_page_flip(struct drm_device *dev, int pipe);
 519 extern void intel_finish_page_flip_plane(struct drm_device *dev, int plane);
 520
 521 extern void intel_setup_overlay(struct drm_device *dev);
 522 extern void intel_cleanup_overlay(struct drm_device *dev);
 523 extern int intel_overlay_switch_off(struct intel_overlay *overlay);
 524 extern int intel_overlay_put_image(struct drm_device *dev, void *data,
 525                                    struct drm_file *file_priv);
 526 extern int intel_overlay_attrs(struct drm_device *dev, void *data,
 527                                struct drm_file *file_priv);
 528
 529 extern void intel_fb_output_poll_changed(struct drm_device *dev);
 530 extern void intel_fb_restore_mode(struct drm_device *dev);
 531
 532 extern void assert_pipe(struct drm_i915_private *dev_priv, enum pipe pipe,
 533                         bool state);
 534 #define assert_pipe_enabled(d, p) assert_pipe(d, p, true)
 535 #define assert_pipe_disabled(d, p) assert_pipe(d, p, false)
 536
 537 extern void intel_init_clock_gating(struct drm_device *dev);
 538 extern void intel_write_eld(struct drm_encoder *encoder,
 539                             struct drm_display_mode *mode);
 540 extern void intel_cpt_verify_modeset(struct drm_device *dev, int pipe);
 541 extern void intel_prepare_ddi(struct drm_device *dev);
 542 extern void hsw_fdi_link_train(struct drm_crtc *crtc);
 543 extern void intel_ddi_init(struct drm_device *dev, enum port port);
 544
 545 /* For use by IVB LP watermark workaround in intel_sprite.c */
 546 extern void intel_update_watermarks(struct drm_device *dev);
 547 extern void intel_update_sprite_watermarks(struct drm_device *dev, int pipe,
 548                                            uint32_t sprite_width,
 549                                            int pixel_size);
 550 extern void intel_update_linetime_watermarks(struct drm_device *dev, int pipe,
 551                          struct drm_display_mode *mode);
 552
 553 extern int intel_sprite_set_colorkey(struct drm_device *dev, void *data,
 554                                      struct drm_file *file_priv);
 555 extern int intel_sprite_get_colorkey(struct drm_device *dev, void *data,
 556                                      struct drm_file *file_priv);
 557
 558 extern u32 intel_dpio_read(struct drm_i915_private *dev_priv, int reg);
 559
 560 /* Power-related functions, located in intel_pm.c */
 561 extern void intel_init_pm(struct drm_device *dev);
 562 /* FBC */
 563 extern bool intel_fbc_enabled(struct drm_device *dev);
 564 extern void intel_enable_fbc(struct drm_crtc *crtc, unsigned long interval);
 565 extern void intel_update_fbc(struct drm_device *dev);
 566 /* IPS */
 567 extern void intel_gpu_ips_init(struct drm_i915_private *dev_priv);
 568 extern void intel_gpu_ips_teardown(void);
 569
 570 extern void intel_init_power_wells(struct drm_device *dev);
 571 extern void intel_enable_gt_powersave(struct drm_device *dev);
 572 extern void intel_disable_gt_powersave(struct drm_device *dev);
 573 extern void gen6_gt_check_fifodbg(struct drm_i915_private *dev_priv);
 574 extern void ironlake_teardown_rc6(struct drm_device *dev);
 575
 576 extern void intel_enable_ddi(struct intel_encoder *encoder);
 577 extern void intel_disable_ddi(struct intel_encoder *encoder);
 578 extern bool intel_ddi_get_hw_state(struct intel_encoder *encoder,
 579                                    enum pipe *pipe);
 580 extern void intel_ddi_mode_set(struct drm_encoder *encoder,
 581                                 struct drm_display_mode *mode,
 582                                 struct drm_display_mode *adjusted_mode);
 583
 584 #endif /* __INTEL_DRV_H__ */