summaryrefslogtreecommitdiffstats
path: root/drivers/gpu/drm/i915/intel_drv.h
blob: 7f2b384ac939834fe8e024df14a3e47e4e82ad18 (plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
298
299
300
301
302
303
304
305
306
307
308
309
310
311
312
313
314
315
316
317
318
319
320
321
322
323
324
325
326
327
328
329
330
331
332
333
334
335
336
337
338
339
340
341
342
343
344
345
346
347
348
349
350
351
352
353
354
355
356
357
358
359
360
361
362
363
364
365
366
367
368
369
370
371
372
373
374
375
376
377
378
379
380
381
382
383
384
385
386
387
388
389
390
391
392
393
394
395
396
397
398
399
400
401
402
403
404
405
406
407
408
409
410
411
412
413
414
415
416
417
418
419
420
421
422
423
424
425
426
427
428
429
430
431
432
433
434
435
436
437
438
439
440
441
442
443
444
445
446
447
448
449
450
451
452
453
454
455
456
457
458
459
460
461
462
463
464
465
466
467
468
469
470
471
472
473
474
475
476
477
478
479
480
481
482
483
484
485
486
487
488
489
490
491
492
493
494
495
496
497
498
499
500
501
502
503
504
505
506
507
508
509
510
511
512
513
514
515
516
517
518
519
520
521
522
523
524
525
526
527
528
529
530
531
532
533
534
535
536
537
538
539
540
541
542
543
544
545
546
547
548
549
550
551
552
553
554
555
556
557
558
559
560
561
562
563
564
565
566
567
568
569
570
571
572
573
574
575
576
577
578
579
580
581
582
583
584
585
586
587
588
589
590
591
592
593
594
595
596
597
598
599
600
601
602
603
604
605
606
607
608
609
610
611
612
613
614
615
616
617
618
619
620
621
622
623
624
625
626
627
628
629
630
631
632
633
634
635
636
637
638
639
640
641
642
643
644
645
646
647
648
649
650
651
652
653
654
655
656
657
658
659
660
661
662
663
664
665
666
667
668
669
670
671
672
673
674
675
676
677
678
679
680
681
682
683
684
685
686
687
688
689
690
691
692
693
694
695
696
697
698
699
700
701
702
703
704
705
706
707
708
709
710
711
712
713
714
715
716
717
718
719
720
721
722
723
724
725
726
727
728
729
730
731
732
733
734
735
736
737
738
739
740
741
742
743
744
745
746
747
748
749
750
751
752
753
754
755
756
757
758
759
760
761
762
763
764
765
766
767
768
769
770
771
772
773
774
775
776
777
778
779
780
781
782
783
784
785
786
787
788
789
790
791
792
793
794
795
796
797
798
799
/*
 * Copyright (c) 2006 Dave Airlie <airlied@linux.ie>
 * Copyright (c) 2007-2008 Intel Corporation
 *   Jesse Barnes <jesse.barnes@intel.com>
 *
 * Permission is hereby granted, free of charge, to any person obtaining a
 * copy of this software and associated documentation files (the "Software"),
 * to deal in the Software without restriction, including without limitation
 * the rights to use, copy, modify, merge, publish, distribute, sublicense,
 * and/or sell copies of the Software, and to permit persons to whom the
 * Software is furnished to do so, subject to the following conditions:
 *
 * The above copyright notice and this permission notice (including the next
 * paragraph) shall be included in all copies or substantial portions of the
 * Software.
 *
 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.  IN NO EVENT SHALL
 * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
 * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
 * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS
 * IN THE SOFTWARE.
 */
#ifndef __INTEL_DRV_H__
#define __INTEL_DRV_H__

#include <linux/i2c.h>
#include <linux/hdmi.h>
#include <drm/i915_drm.h>
#include "i915_drv.h"
#include <drm/drm_crtc.h>
#include <drm/drm_crtc_helper.h>
#include <drm/drm_fb_helper.h>
#include <drm/drm_dp_helper.h>

/**
 * _wait_for - magic (register) wait macro
 *
 * Does the right thing for modeset paths when run under kdgb or similar atomic
 * contexts. Note that it's important that we check the condition again after
 * having timed out, since the timeout could be due to preemption or similar and
 * we've never had a chance to check the condition before the timeout.
 */
#define _wait_for(COND, MS, W) ({ \
	unsigned long timeout__ = jiffies + msecs_to_jiffies(MS) + 1;	\
	int ret__ = 0;							\
	while (!(COND)) {						\
		if (time_after(jiffies, timeout__)) {			\
			if (!(COND))					\
				ret__ = -ETIMEDOUT;			\
			break;						\
		}							\
		if (W && drm_can_sleep())  {				\
			msleep(W);					\
		} else {						\
			cpu_relax();					\
		}							\
	}								\
	ret__;								\
})

#define wait_for(COND, MS) _wait_for(COND, MS, 1)
#define wait_for_atomic(COND, MS) _wait_for(COND, MS, 0)
#define wait_for_atomic_us(COND, US) _wait_for((COND), \
					       DIV_ROUND_UP((US), 1000), 0)

#define KHz(x) (1000*x)
#define MHz(x) KHz(1000*x)

/*
 * Display related stuff
 */

/* store information about an Ixxx DVO */
/* The i830->i865 use multiple DVOs with multiple i2cs */
/* the i915, i945 have a single sDVO i2c bus - which is different */
#define MAX_OUTPUTS 6
/* maximum connectors per crtcs in the mode set */
#define INTELFB_CONN_LIMIT 4

#define INTEL_I2C_BUS_DVO 1
#define INTEL_I2C_BUS_SDVO 2

/* these are outputs from the chip - integrated only
   external chips are via DVO or SDVO output */
#define INTEL_OUTPUT_UNUSED 0
#define INTEL_OUTPUT_ANALOG 1
#define INTEL_OUTPUT_DVO 2
#define INTEL_OUTPUT_SDVO 3
#define INTEL_OUTPUT_LVDS 4
#define INTEL_OUTPUT_TVOUT 5
#define INTEL_OUTPUT_HDMI 6
#define INTEL_OUTPUT_DISPLAYPORT 7
#define INTEL_OUTPUT_EDP 8
#define INTEL_OUTPUT_UNKNOWN 9

#define INTEL_DVO_CHIP_NONE 0
#define INTEL_DVO_CHIP_LVDS 1
#define INTEL_DVO_CHIP_TMDS 2
#define INTEL_DVO_CHIP_TVOUT 4

struct intel_framebuffer {
	struct drm_framebuffer base;
	struct drm_i915_gem_object *obj;
};

struct intel_fbdev {
	struct drm_fb_helper helper;
	struct intel_framebuffer ifb;
	struct list_head fbdev_list;
	struct drm_display_mode *our_mode;
};

struct intel_encoder {
	struct drm_encoder base;
	/*
	 * The new crtc this encoder will be driven from. Only differs from
	 * base->crtc while a modeset is in progress.
	 */
	struct intel_crtc *new_crtc;

	int type;
	/*
	 * Intel hw has only one MUX where encoders could be clone, hence a
	 * simple flag is enough to compute the possible_clones mask.
	 */
	bool cloneable;
	bool connectors_active;
	void (*hot_plug)(struct intel_encoder *);
	bool (*compute_config)(struct intel_encoder *,
			       struct intel_crtc_config *);
	void (*pre_pll_enable)(struct intel_encoder *);
	void (*pre_enable)(struct intel_encoder *);
	void (*enable)(struct intel_encoder *);
	void (*mode_set)(struct intel_encoder *intel_encoder);
	void (*disable)(struct intel_encoder *);
	void (*post_disable)(struct intel_encoder *);
	/* Read out the current hw state of this connector, returning true if
	 * the encoder is active. If the encoder is enabled it also set the pipe
	 * it is connected to in the pipe parameter. */
	bool (*get_hw_state)(struct intel_encoder *, enum pipe *pipe);
	/* Reconstructs the equivalent mode flags for the current hardware
	 * state. This must be called _after_ display->get_pipe_config has
	 * pre-filled the pipe config. Note that intel_encoder->base.crtc must
	 * be set correctly before calling this function. */
	void (*get_config)(struct intel_encoder *,
			   struct intel_crtc_config *pipe_config);
	int crtc_mask;
	enum hpd_pin hpd_pin;
};

struct intel_panel {
	struct drm_display_mode *fixed_mode;
	int fitting_mode;
};

struct intel_connector {
	struct drm_connector base;
	/*
	 * The fixed encoder this connector is connected to.
	 */
	struct intel_encoder *encoder;

	/*
	 * The new encoder this connector will be driven. Only differs from
	 * encoder while a modeset is in progress.
	 */
	struct intel_encoder *new_encoder;

	/* Reads out the current hw, returning true if the connector is enabled
	 * and active (i.e. dpms ON state). */
	bool (*get_hw_state)(struct intel_connector *);

	/* Panel info for eDP and LVDS */
	struct intel_panel panel;

	/* Cached EDID for eDP and LVDS. May hold ERR_PTR for invalid EDID. */
	struct edid *edid;

	/* since POLL and HPD connectors may use the same HPD line keep the native
	   state of connector->polled in case hotplug storm detection changes it */
	u8 polled;
};

typedef struct dpll {
	/* given values */
	int n;
	int m1, m2;
	int p1, p2;
	/* derived values */
	int	dot;
	int	vco;
	int	m;
	int	p;
} intel_clock_t;

struct intel_crtc_config {
	/**
	 * quirks - bitfield with hw state readout quirks
	 *
	 * For various reasons the hw state readout code might not be able to
	 * completely faithfully read out the current state. These cases are
	 * tracked with quirk flags so that fastboot and state checker can act
	 * accordingly.
	 */
#define PIPE_CONFIG_QUIRK_MODE_SYNC_FLAGS (1<<0) /* unreliable sync mode.flags */
	unsigned long quirks;

	struct drm_display_mode requested_mode;
	struct drm_display_mode adjusted_mode;
	/* Whether to set up the PCH/FDI. Note that we never allow sharing
	 * between pch encoders and cpu encoders. */
	bool has_pch_encoder;

	/* CPU Transcoder for the pipe. Currently this can only differ from the
	 * pipe on Haswell (where we have a special eDP transcoder). */
	enum transcoder cpu_transcoder;

	/*
	 * Use reduced/limited/broadcast rbg range, compressing from the full
	 * range fed into the crtcs.
	 */
	bool limited_color_range;

	/* DP has a bunch of special case unfortunately, so mark the pipe
	 * accordingly. */
	bool has_dp_encoder;

	/*
	 * Enable dithering, used when the selected pipe bpp doesn't match the
	 * plane bpp.
	 */
	bool dither;

	/* Controls for the clock computation, to override various stages. */
	bool clock_set;

	/* SDVO TV has a bunch of special case. To make multifunction encoders
	 * work correctly, we need to track this at runtime.*/
	bool sdvo_tv_clock;

	/*
	 * crtc bandwidth limit, don't increase pipe bpp or clock if not really
	 * required. This is set in the 2nd loop of calling encoder's
	 * ->compute_config if the first pick doesn't work out.
	 */
	bool bw_constrained;

	/* Settings for the intel dpll used on pretty much everything but
	 * haswell. */
	struct dpll dpll;

	/* Selected dpll when shared or DPLL_ID_PRIVATE. */
	enum intel_dpll_id shared_dpll;

	/* Actual register state of the dpll, for shared dpll cross-checking. */
	struct intel_dpll_hw_state dpll_hw_state;

	int pipe_bpp;
	struct intel_link_m_n dp_m_n;

	/*
	 * Frequence the dpll for the port should run at. Differs from the
	 * adjusted dotclock e.g. for DP or 12bpc hdmi mode.
	 */
	int port_clock;

	/* Used by SDVO (and if we ever fix it, HDMI). */
	unsigned pixel_multiplier;

	/* Panel fitter controls for gen2-gen4 + VLV */
	struct {
		u32 control;
		u32 pgm_ratios;
		u32 lvds_border_bits;
	} gmch_pfit;

	/* Panel fitter placement and size for Ironlake+ */
	struct {
		u32 pos;
		u32 size;
		bool enabled;
	} pch_pfit;

	/* FDI configuration, only valid if has_pch_encoder is set. */
	int fdi_lanes;
	struct intel_link_m_n fdi_m_n;

	bool ips_enabled;
};

struct intel_crtc {
	struct drm_crtc base;
	enum pipe pipe;
	enum plane plane;
	u8 lut_r[256], lut_g[256], lut_b[256];
	/*
	 * Whether the crtc and the connected output pipeline is active. Implies
	 * that crtc->enabled is set, i.e. the current mode configuration has
	 * some outputs connected to this crtc.
	 */
	bool active;
	bool eld_vld;
	bool primary_disabled; /* is the crtc obscured by a plane? */
	bool lowfreq_avail;
	struct intel_overlay *overlay;
	struct intel_unpin_work *unpin_work;

	atomic_t unpin_work_count;

	/* Display surface base address adjustement for pageflips. Note that on
	 * gen4+ this only adjusts up to a tile, offsets within a tile are
	 * handled in the hw itself (with the TILEOFF register). */
	unsigned long dspaddr_offset;

	struct drm_i915_gem_object *cursor_bo;
	uint32_t cursor_addr;
	int16_t cursor_x, cursor_y;
	int16_t cursor_width, cursor_height;
	bool cursor_visible;

	struct intel_crtc_config config;

	uint32_t ddi_pll_sel;

	/* reset counter value when the last flip was submitted */
	unsigned int reset_counter;

	/* Access to these should be protected by dev_priv->irq_lock. */
	bool cpu_fifo_underrun_disabled;
	bool pch_fifo_underrun_disabled;
};

struct intel_plane_wm_parameters {
	uint32_t horiz_pixels;
	uint8_t bytes_per_pixel;
	bool enabled;
	bool scaled;
};

struct intel_plane {
	struct drm_plane base;
	int plane;
	enum pipe pipe;
	struct drm_i915_gem_object *obj;
	bool can_scale;
	int max_downscale;
	u32 lut_r[1024], lut_g[1024], lut_b[1024];
	int crtc_x, crtc_y;
	unsigned int crtc_w, crtc_h;
	uint32_t src_x, src_y;
	uint32_t src_w, src_h;

	/* Since we need to change the watermarks before/after
	 * enabling/disabling the planes, we need to store the parameters here
	 * as the other pieces of the struct may not reflect the values we want
	 * for the watermark calculations. Currently only Haswell uses this.
	 */
	struct intel_plane_wm_parameters wm;

	void (*update_plane)(struct drm_plane *plane,
			     struct drm_crtc *crtc,
			     struct drm_framebuffer *fb,
			     struct drm_i915_gem_object *obj,
			     int crtc_x, int crtc_y,
			     unsigned int crtc_w, unsigned int crtc_h,
			     uint32_t x, uint32_t y,
			     uint32_t src_w, uint32_t src_h);
	void (*disable_plane)(struct drm_plane *plane,
			      struct drm_crtc *crtc);
	int (*update_colorkey)(struct drm_plane *plane,
			       struct drm_intel_sprite_colorkey *key);
	void (*get_colorkey)(struct drm_plane *plane,
			     struct drm_intel_sprite_colorkey *key);
};

struct intel_watermark_params {
	unsigned long fifo_size;
	unsigned long max_wm;
	unsigned long default_wm;
	unsigned long guard_size;
	unsigned long cacheline_size;
};

struct cxsr_latency {
	int is_desktop;
	int is_ddr3;
	unsigned long fsb_freq;
	unsigned long mem_freq;
	unsigned long display_sr;
	unsigned long display_hpll_disable;
	unsigned long cursor_sr;
	unsigned long cursor_hpll_disable;
};

#define to_intel_crtc(x) container_of(x, struct intel_crtc, base)
#define to_intel_connector(x) container_of(x, struct intel_connector, base)
#define to_intel_encoder(x) container_of(x, struct intel_encoder, base)
#define to_intel_framebuffer(x) container_of(x, struct intel_framebuffer, base)
#define to_intel_plane(x) container_of(x, struct intel_plane, base)

struct intel_hdmi {
	u32 hdmi_reg;
	int ddc_bus;
	uint32_t color_range;
	bool color_range_auto;
	bool has_hdmi_sink;
	bool has_audio;
	enum hdmi_force_audio force_audio;
	bool rgb_quant_range_selectable;
	void (*write_infoframe)(struct drm_encoder *encoder,
				enum hdmi_infoframe_type type,
				const uint8_t *frame, ssize_t len);
	void (*set_infoframes)(struct drm_encoder *encoder,
			       struct drm_display_mode *adjusted_mode);
};

#define DP_MAX_DOWNSTREAM_PORTS		0x10
#define DP_LINK_CONFIGURATION_SIZE	9

struct intel_dp {
	uint32_t output_reg;
	uint32_t aux_ch_ctl_reg;
	uint32_t DP;
	uint8_t  link_configuration[DP_LINK_CONFIGURATION_SIZE];
	bool has_audio;
	enum hdmi_force_audio force_audio;
	uint32_t color_range;
	bool color_range_auto;
	uint8_t link_bw;
	uint8_t lane_count;
	uint8_t dpcd[DP_RECEIVER_CAP_SIZE];
	uint8_t psr_dpcd[EDP_PSR_RECEIVER_CAP_SIZE];
	uint8_t downstream_ports[DP_MAX_DOWNSTREAM_PORTS];
	struct i2c_adapter adapter;
	struct i2c_algo_dp_aux_data algo;
	uint8_t train_set[4];
	int panel_power_up_delay;
	int panel_power_down_delay;
	int panel_power_cycle_delay;
	int backlight_on_delay;
	int backlight_off_delay;
	struct delayed_work panel_vdd_work;
	bool want_panel_vdd;
	bool psr_setup_done;
	struct intel_connector *attached_connector;
};

struct intel_digital_port {
	struct intel_encoder base;
	enum port port;
	u32 saved_port_bits;
	struct intel_dp dp;
	struct intel_hdmi hdmi;
};

static inline int
vlv_dport_to_channel(struct intel_digital_port *dport)
{
	switch (dport->port) {
	case PORT_B:
		return 0;
	case PORT_C:
		return 1;
	default:
		BUG();
	}
}

static inline struct drm_crtc *
intel_get_crtc_for_pipe(struct drm_device *dev, int pipe)
{
	struct drm_i915_private *dev_priv = dev->dev_private;
	return dev_priv->pipe_to_crtc_mapping[pipe];
}

static inline struct drm_crtc *
intel_get_crtc_for_plane(struct drm_device *dev, int plane)
{
	struct drm_i915_private *dev_priv = dev->dev_private;
	return dev_priv->plane_to_crtc_mapping[plane];
}

struct intel_unpin_work {
	struct work_struct work;
	struct drm_crtc *crtc;
	struct drm_i915_gem_object *old_fb_obj;
	struct drm_i915_gem_object *pending_flip_obj;
	struct drm_pending_vblank_event *event;
	atomic_t pending;
#define INTEL_FLIP_INACTIVE	0
#define INTEL_FLIP_PENDING	1
#define INTEL_FLIP_COMPLETE	2
	bool enable_stall_check;
};

int intel_pch_rawclk(struct drm_device *dev);

int intel_connector_update_modes(struct drm_connector *connector,
				struct edid *edid);
int intel_ddc_get_modes(struct drm_connector *c, struct i2c_adapter *adapter);

extern void intel_attach_force_audio_property(struct drm_connector *connector);
extern void intel_attach_broadcast_rgb_property(struct drm_connector *connector);

extern bool intel_pipe_has_type(struct drm_crtc *crtc, int type);
extern void intel_crt_init(struct drm_device *dev);
extern void intel_hdmi_init(struct drm_device *dev,
			    int hdmi_reg, enum port port);
extern void intel_hdmi_init_connector(struct intel_digital_port *intel_dig_port,
				      struct intel_connector *intel_connector);
extern struct intel_hdmi *enc_to_intel_hdmi(struct drm_encoder *encoder);
extern bool intel_hdmi_compute_config(struct intel_encoder *encoder,
				      struct intel_crtc_config *pipe_config);
extern bool intel_sdvo_init(struct drm_device *dev, uint32_t sdvo_reg,
			    bool is_sdvob);
extern void intel_dvo_init(struct drm_device *dev);
extern void intel_tv_init(struct drm_device *dev);
extern void intel_mark_busy(struct drm_device *dev);
extern void intel_mark_fb_busy(struct drm_i915_gem_object *obj,
			       struct intel_ring_buffer *ring);
extern void intel_mark_idle(struct drm_device *dev);
extern void intel_lvds_init(struct drm_device *dev);
extern bool intel_is_dual_link_lvds(struct drm_device *dev);
extern void intel_dp_init(struct drm_device *dev, int output_reg,
			  enum port port);
extern bool intel_dp_init_connector(struct intel_digital_port *intel_dig_port,
				    struct intel_connector *intel_connector);
extern void intel_dp_init_link_config(struct intel_dp *intel_dp);
extern void intel_dp_start_link_train(struct intel_dp *intel_dp);
extern void intel_dp_complete_link_train(struct intel_dp *intel_dp);
extern void intel_dp_stop_link_train(struct intel_dp *intel_dp);
extern void intel_dp_sink_dpms(struct intel_dp *intel_dp, int mode);
extern void intel_dp_encoder_destroy(struct drm_encoder *encoder);
extern void intel_dp_check_link_status(struct intel_dp *intel_dp);
extern bool intel_dp_compute_config(struct intel_encoder *encoder,
				    struct intel_crtc_config *pipe_config);
extern bool intel_dpd_is_edp(struct drm_device *dev);
extern void ironlake_edp_backlight_on(struct intel_dp *intel_dp);
extern void ironlake_edp_backlight_off(struct intel_dp *intel_dp);
extern void ironlake_edp_panel_on(struct intel_dp *intel_dp);
extern void ironlake_edp_panel_off(struct intel_dp *intel_dp);
extern void ironlake_edp_panel_vdd_on(struct intel_dp *intel_dp);
extern void ironlake_edp_panel_vdd_off(struct intel_dp *intel_dp, bool sync);
extern int intel_plane_init(struct drm_device *dev, enum pipe pipe, int plane);
extern void intel_flush_display_plane(struct drm_i915_private *dev_priv,
				      enum plane plane);

/* intel_panel.c */
extern int intel_panel_init(struct intel_panel *panel,
			    struct drm_display_mode *fixed_mode);
extern void intel_panel_fini(struct intel_panel *panel);

extern void intel_fixed_panel_mode(const struct drm_display_mode *fixed_mode,
				   struct drm_display_mode *adjusted_mode);
extern void intel_pch_panel_fitting(struct intel_crtc *crtc,
				    struct intel_crtc_config *pipe_config,
				    int fitting_mode);
extern void intel_gmch_panel_fitting(struct intel_crtc *crtc,
				     struct intel_crtc_config *pipe_config,
				     int fitting_mode);
extern void intel_panel_set_backlight(struct drm_device *dev,
				      u32 level, u32 max);
extern int intel_panel_setup_backlight(struct drm_connector *connector);
extern void intel_panel_enable_backlight(struct drm_device *dev,
					 enum pipe pipe);
extern void intel_panel_disable_backlight(struct drm_device *dev);
extern void intel_panel_destroy_backlight(struct drm_device *dev);
extern enum drm_connector_status intel_panel_detect(struct drm_device *dev);

struct intel_set_config {
	struct drm_encoder **save_connector_encoders;
	struct drm_crtc **save_encoder_crtcs;

	bool fb_changed;
	bool mode_changed;
};

extern void intel_crtc_restore_mode(struct drm_crtc *crtc);
extern void intel_crtc_load_lut(struct drm_crtc *crtc);
extern void intel_crtc_update_dpms(struct drm_crtc *crtc);
extern void intel_encoder_destroy(struct drm_encoder *encoder);
extern void intel_connector_dpms(struct drm_connector *, int mode);
extern bool intel_connector_get_hw_state(struct intel_connector *connector);
extern void intel_modeset_check_state(struct drm_device *dev);
extern void intel_plane_restore(struct drm_plane *plane);
extern void intel_plane_disable(struct drm_plane *plane);


static inline struct intel_encoder *intel_attached_encoder(struct drm_connector *connector)
{
	return to_intel_connector(connector)->encoder;
}

static inline struct intel_digital_port *
enc_to_dig_port(struct drm_encoder *encoder)
{
	return container_of(encoder, struct intel_digital_port, base.base);
}

static inline struct intel_dp *enc_to_intel_dp(struct drm_encoder *encoder)
{
	return &enc_to_dig_port(encoder)->dp;
}

static inline struct intel_digital_port *
dp_to_dig_port(struct intel_dp *intel_dp)
{
	return container_of(intel_dp, struct intel_digital_port, dp);
}

static inline struct intel_digital_port *
hdmi_to_dig_port(struct intel_hdmi *intel_hdmi)
{
	return container_of(intel_hdmi, struct intel_digital_port, hdmi);
}

bool ibx_digital_port_connected(struct drm_i915_private *dev_priv,
				struct intel_digital_port *port);

extern void intel_connector_attach_encoder(struct intel_connector *connector,
					   struct intel_encoder *encoder);
extern struct drm_encoder *intel_best_encoder(struct drm_connector *connector);

extern struct drm_display_mode *intel_crtc_mode_get(struct drm_device *dev,
						    struct drm_crtc *crtc);
int intel_get_pipe_from_crtc_id(struct drm_device *dev, void *data,
				struct drm_file *file_priv);
extern enum transcoder
intel_pipe_to_cpu_transcoder(struct drm_i915_private *dev_priv,
			     enum pipe pipe);
extern void intel_wait_for_vblank(struct drm_device *dev, int pipe);
extern void intel_wait_for_pipe_off(struct drm_device *dev, int pipe);
extern int ironlake_get_lanes_required(int target_clock, int link_bw, int bpp);
extern void vlv_wait_port_ready(struct drm_i915_private *dev_priv, int port);

struct intel_load_detect_pipe {
	struct drm_framebuffer *release_fb;
	bool load_detect_temp;
	int dpms_mode;
};
extern bool intel_get_load_detect_pipe(struct drm_connector *connector,
				       struct drm_display_mode *mode,
				       struct intel_load_detect_pipe *old);
extern void intel_release_load_detect_pipe(struct drm_connector *connector,
					   struct intel_load_detect_pipe *old);

extern void intel_crtc_fb_gamma_set(struct drm_crtc *crtc, u16 red, u16 green,
				    u16 blue, int regno);
extern void intel_crtc_fb_gamma_get(struct drm_crtc *crtc, u16 *red, u16 *green,
				    u16 *blue, int regno);

extern int intel_pin_and_fence_fb_obj(struct drm_device *dev,
				      struct drm_i915_gem_object *obj,
				      struct intel_ring_buffer *pipelined);
extern void intel_unpin_fb_obj(struct drm_i915_gem_object *obj);

extern int intel_framebuffer_init(struct drm_device *dev,
				  struct intel_framebuffer *ifb,
				  struct drm_mode_fb_cmd2 *mode_cmd,
				  struct drm_i915_gem_object *obj);
extern void intel_framebuffer_fini(struct intel_framebuffer *fb);
extern int intel_fbdev_init(struct drm_device *dev);
extern void intel_fbdev_initial_config(struct drm_device *dev);
extern void intel_fbdev_fini(struct drm_device *dev);
extern void intel_fbdev_set_suspend(struct drm_device *dev, int state);
extern void intel_prepare_page_flip(struct drm_device *dev, int plane);
extern void intel_finish_page_flip(struct drm_device *dev, int pipe);
extern void intel_finish_page_flip_plane(struct drm_device *dev, int plane);

extern void intel_setup_overlay(struct drm_device *dev);
extern void intel_cleanup_overlay(struct drm_device *dev);
extern int intel_overlay_switch_off(struct intel_overlay *overlay);
extern int intel_overlay_put_image(struct drm_device *dev, void *data,
				   struct drm_file *file_priv);
extern int intel_overlay_attrs(struct drm_device *dev, void *data,
			       struct drm_file *file_priv);

extern void intel_fb_output_poll_changed(struct drm_device *dev);
extern void intel_fb_restore_mode(struct drm_device *dev);

struct intel_shared_dpll *
intel_crtc_to_shared_dpll(struct intel_crtc *crtc);

void assert_shared_dpll(struct drm_i915_private *dev_priv,
			struct intel_shared_dpll *pll,
			bool state);
#define assert_shared_dpll_enabled(d, p) assert_shared_dpll(d, p, true)
#define assert_shared_dpll_disabled(d, p) assert_shared_dpll(d, p, false)
void assert_pll(struct drm_i915_private *dev_priv,
		enum pipe pipe, bool state);
#define assert_pll_enabled(d, p) assert_pll(d, p, true)
#define assert_pll_disabled(d, p) assert_pll(d, p, false)
void assert_fdi_rx_pll(struct drm_i915_private *dev_priv,
		       enum pipe pipe, bool state);
#define assert_fdi_rx_pll_enabled(d, p) assert_fdi_rx_pll(d, p, true)
#define assert_fdi_rx_pll_disabled(d, p) assert_fdi_rx_pll(d, p, false)
extern void assert_pipe(struct drm_i915_private *dev_priv, enum pipe pipe,
			bool state);
#define assert_pipe_enabled(d, p) assert_pipe(d, p, true)
#define assert_pipe_disabled(d, p) assert_pipe(d, p, false)

extern void intel_init_clock_gating(struct drm_device *dev);
extern void intel_suspend_hw(struct drm_device *dev);
extern void intel_write_eld(struct drm_encoder *encoder,
			    struct drm_display_mode *mode);
extern void intel_prepare_ddi(struct drm_device *dev);
extern void hsw_fdi_link_train(struct drm_crtc *crtc);
extern void intel_ddi_init(struct drm_device *dev, enum port port);

/* For use by IVB LP watermark workaround in intel_sprite.c */
extern void intel_update_watermarks(struct drm_device *dev);
extern void intel_update_sprite_watermarks(struct drm_plane *plane,
					   struct drm_crtc *crtc,
					   uint32_t sprite_width, int pixel_size,
					   bool enabled, bool scaled);

extern unsigned long intel_gen4_compute_page_offset(int *x, int *y,
						    unsigned int tiling_mode,
						    unsigned int bpp,
						    unsigned int pitch);

extern int intel_sprite_set_colorkey(struct drm_device *dev, void *data,
				     struct drm_file *file_priv);
extern int intel_sprite_get_colorkey(struct drm_device *dev, void *data,
				     struct drm_file *file_priv);

/* Power-related functions, located in intel_pm.c */
extern void intel_init_pm(struct drm_device *dev);
/* FBC */
extern bool intel_fbc_enabled(struct drm_device *dev);
extern void intel_update_fbc(struct drm_device *dev);
/* IPS */
extern void intel_gpu_ips_init(struct drm_i915_private *dev_priv);
extern void intel_gpu_ips_teardown(void);

/* Power well */
extern int i915_init_power_well(struct drm_device *dev);
extern void i915_remove_power_well(struct drm_device *dev);

extern bool intel_display_power_enabled(struct drm_device *dev,
					enum intel_display_power_domain domain);
extern void intel_init_power_well(struct drm_device *dev);
extern void intel_set_power_well(struct drm_device *dev, bool enable);
extern void intel_enable_gt_powersave(struct drm_device *dev);
extern void intel_disable_gt_powersave(struct drm_device *dev);
extern void ironlake_teardown_rc6(struct drm_device *dev);
void gen6_update_ring_freq(struct drm_device *dev);

extern bool intel_ddi_get_hw_state(struct intel_encoder *encoder,
				   enum pipe *pipe);
extern int intel_ddi_get_cdclk_freq(struct drm_i915_private *dev_priv);
extern void intel_ddi_pll_init(struct drm_device *dev);
extern void intel_ddi_enable_transcoder_func(struct drm_crtc *crtc);
extern void intel_ddi_disable_transcoder_func(struct drm_i915_private *dev_priv,
					      enum transcoder cpu_transcoder);
extern void intel_ddi_enable_pipe_clock(struct intel_crtc *intel_crtc);
extern void intel_ddi_disable_pipe_clock(struct intel_crtc *intel_crtc);
extern void intel_ddi_setup_hw_pll_state(struct drm_device *dev);
extern bool intel_ddi_pll_mode_set(struct drm_crtc *crtc);
extern void intel_ddi_put_crtc_pll(struct drm_crtc *crtc);
extern void intel_ddi_set_pipe_settings(struct drm_crtc *crtc);
extern void intel_ddi_prepare_link_retrain(struct drm_encoder *encoder);
extern bool
intel_ddi_connector_get_hw_state(struct intel_connector *intel_connector);
extern void intel_ddi_fdi_disable(struct drm_crtc *crtc);
extern void intel_ddi_get_config(struct intel_encoder *encoder,
				 struct intel_crtc_config *pipe_config);

extern void intel_display_handle_reset(struct drm_device *dev);
extern bool intel_set_cpu_fifo_underrun_reporting(struct drm_device *dev,
						  enum pipe pipe,
						  bool enable);
extern bool intel_set_pch_fifo_underrun_reporting(struct drm_device *dev,
						 enum transcoder pch_transcoder,
						 bool enable);

extern void intel_edp_psr_enable(struct intel_dp *intel_dp);
extern void intel_edp_psr_disable(struct intel_dp *intel_dp);
extern void intel_edp_psr_update(struct drm_device *dev);
extern void hsw_disable_lcpll(struct drm_i915_private *dev_priv,
			      bool switch_to_fclk, bool allow_power_down);
extern void hsw_restore_lcpll(struct drm_i915_private *dev_priv);
extern void ilk_enable_gt_irq(struct drm_i915_private *dev_priv, uint32_t mask);
extern void ilk_disable_gt_irq(struct drm_i915_private *dev_priv,
			       uint32_t mask);
extern void snb_enable_pm_irq(struct drm_i915_private *dev_priv, uint32_t mask);
extern void snb_disable_pm_irq(struct drm_i915_private *dev_priv,
			       uint32_t mask);
extern void hsw_enable_pc8_work(struct work_struct *__work);
extern void hsw_enable_package_c8(struct drm_i915_private *dev_priv);
extern void hsw_disable_package_c8(struct drm_i915_private *dev_priv);
extern void hsw_pc8_disable_interrupts(struct drm_device *dev);
extern void hsw_pc8_restore_interrupts(struct drm_device *dev);
extern void intel_aux_display_runtime_get(struct drm_i915_private *dev_priv);
extern void intel_aux_display_runtime_put(struct drm_i915_private *dev_priv);

#endif /* __INTEL_DRV_H__ */