1 /* SPDX-License-Identifier: MIT */
3 * Copyright © 2022 Intel Corporation
6 #ifndef __INTEL_DISPLAY_CORE_H__
7 #define __INTEL_DISPLAY_CORE_H__
9 #include <linux/list.h>
10 #include <linux/llist.h>
11 #include <linux/mutex.h>
12 #include <linux/types.h>
13 #include <linux/wait.h>
14 #include <linux/workqueue.h>
16 #include <drm/drm_connector.h>
17 #include <drm/drm_modeset_lock.h>
19 #include "intel_cdclk.h"
20 #include "intel_display_device.h"
21 #include "intel_display_limits.h"
22 #include "intel_display_params.h"
23 #include "intel_display_power.h"
24 #include "intel_dpll_mgr.h"
25 #include "intel_fbc.h"
26 #include "intel_global_state.h"
27 #include "intel_gmbus.h"
28 #include "intel_opregion.h"
29 #include "intel_wm_types.h"
33 struct drm_i915_private;
35 struct drm_property_blob;
36 struct i915_audio_component;
37 struct i915_hdcp_arbiter;
38 struct intel_atomic_state;
39 struct intel_audio_funcs;
40 struct intel_cdclk_funcs;
41 struct intel_cdclk_vals;
42 struct intel_color_funcs;
44 struct intel_crtc_state;
46 struct intel_dpll_funcs;
47 struct intel_dpll_mgr;
49 struct intel_fdi_funcs;
50 struct intel_hotplug_funcs;
51 struct intel_initial_plane_config;
54 /* Amount of SAGV/QGV points, BSpec precisely defines this */
55 #define I915_NUM_QGV_POINTS 8
57 /* Amount of PSF GV points, BSpec precisely defines this */
58 #define I915_NUM_PSF_GV_POINTS 3
60 struct intel_display_funcs {
62 * Returns the active state of the crtc, and if the crtc is active,
63 * fills out the pipe-config with the hw state.
65 bool (*get_pipe_config)(struct intel_crtc *,
66 struct intel_crtc_state *);
67 void (*get_initial_plane_config)(struct intel_crtc *,
68 struct intel_initial_plane_config *);
69 void (*crtc_enable)(struct intel_atomic_state *state,
70 struct intel_crtc *crtc);
71 void (*crtc_disable)(struct intel_atomic_state *state,
72 struct intel_crtc *crtc);
73 void (*commit_modeset_enables)(struct intel_atomic_state *state);
76 /* functions used for watermark calcs for display. */
77 struct intel_wm_funcs {
78 /* update_wm is for legacy wm management */
79 void (*update_wm)(struct drm_i915_private *dev_priv);
80 int (*compute_pipe_wm)(struct intel_atomic_state *state,
81 struct intel_crtc *crtc);
82 int (*compute_intermediate_wm)(struct intel_atomic_state *state,
83 struct intel_crtc *crtc);
84 void (*initial_watermarks)(struct intel_atomic_state *state,
85 struct intel_crtc *crtc);
86 void (*atomic_update_watermarks)(struct intel_atomic_state *state,
87 struct intel_crtc *crtc);
88 void (*optimize_watermarks)(struct intel_atomic_state *state,
89 struct intel_crtc *crtc);
90 int (*compute_global_watermarks)(struct intel_atomic_state *state);
91 void (*get_hw_state)(struct drm_i915_private *i915);
94 struct intel_audio_state {
95 struct intel_encoder *encoder;
96 u8 eld[MAX_ELD_BYTES];
100 /* hda/i915 audio component */
101 struct i915_audio_component *component;
102 bool component_registered;
103 /* mutex for audio/video sync */
108 /* current audio state for the audio component hooks */
109 struct intel_audio_state state[I915_MAX_TRANSCODERS];
111 /* necessary resource sharing with HDMI LPE audio driver. */
113 struct platform_device *platdev;
119 * dpll and cdclk state is protected by connection_mutex dpll.lock serializes
120 * intel_{prepare,enable,disable}_shared_dpll. Must be global rather than per
121 * dpll, because on some platforms plls share registers.
127 struct intel_shared_dpll shared_dplls[I915_NUM_PLLS];
128 const struct intel_dpll_mgr *mgr;
136 * Bitmask of PLLs using the PCH SSC, indexed using enum intel_dpll_id.
141 struct intel_frontbuffer_tracking {
145 * Tracking bits for delayed frontbuffer flushing du to gpu activity or
152 struct intel_hotplug {
153 struct delayed_work hotplug_work;
155 const u32 *hpd, *pch_hpd;
158 unsigned long last_jiffies;
163 HPD_MARK_DISABLED = 2
165 } stats[HPD_NUM_PINS];
168 struct delayed_work reenable_work;
172 struct work_struct dig_port_work;
174 struct work_struct poll_init_work;
178 * Queuing of hotplug_work, reenable_work and poll_init_work is
179 * enabled. Protected by drm_i915_private::irq_lock.
181 bool detection_work_enabled;
183 unsigned int hpd_storm_threshold;
184 /* Whether or not to count short HPD IRQs in HPD storms */
185 u8 hpd_short_storm_enabled;
187 /* Last state reported by oob_hotplug_event for each encoder */
188 unsigned long oob_hotplug_last_state;
191 * if we get a HPD irq from DP and a HPD irq from non-DP
192 * the non-DP HPD could block the workqueue on a mode config
193 * mutex getting, that userspace may have taken. However
194 * userspace is waiting on the DP workqueue to run which is
195 * blocked behind the non-DP one.
197 struct workqueue_struct *dp_wq;
200 * Flag to track if long HPDs need not to be processed
202 * Some panels generate long HPDs while keep connected to the port.
203 * This can cause issues with CI tests results. In CI systems we
204 * don't expect to disconnect the panels and could ignore the long
205 * HPDs generated from the faulty panels. This flag can be used as
206 * cue to ignore the long HPDs and can be set / unset using debugfs.
208 bool ignore_long_hpd;
211 struct intel_vbt_data {
216 unsigned int int_tv_support:1;
217 unsigned int int_crt_support:1;
218 unsigned int lvds_use_ssc:1;
219 unsigned int int_lvds_support:1;
220 unsigned int display_clock_mode:1;
221 unsigned int fdi_rx_polarity_inverted:1;
223 enum drm_panel_orientation orientation;
225 bool override_afc_startup;
226 u8 override_afc_startup_val;
230 struct list_head display_devices;
231 struct list_head bdb_blocks;
233 struct sdvo_device_mapping {
245 * Raw watermark latency values:
246 * in 0.1us units for WM0,
247 * in 0.5us units for WM1+.
256 * Raw watermark memory latency values
257 * for SKL for all 8 levels
262 /* current hardware state */
264 struct ilk_wm_values hw;
265 struct vlv_wm_values vlv;
266 struct g4x_wm_values g4x;
272 * Should be held around atomic WM register writing; also
273 * protects * intel_crtc->wm.active and
274 * crtc_state->wm.need_postvbl_update.
276 struct mutex wm_mutex;
281 struct intel_display {
282 /* Display functions */
284 /* Top level crtc-ish functions */
285 const struct intel_display_funcs *display;
287 /* Display CDCLK functions */
288 const struct intel_cdclk_funcs *cdclk;
290 /* Display pll funcs */
291 const struct intel_dpll_funcs *dpll;
293 /* irq display functions */
294 const struct intel_hotplug_funcs *hotplug;
296 /* pm display functions */
297 const struct intel_wm_funcs *wm;
299 /* fdi display functions */
300 const struct intel_fdi_funcs *fdi;
302 /* Display internal color functions */
303 const struct intel_color_funcs *color;
305 /* Display internal audio functions */
306 const struct intel_audio_funcs *audio;
310 bool any_task_allowed;
311 struct task_struct *allowed_task;
315 /* backlight registers and fields in struct intel_panel */
320 struct intel_global_obj obj;
322 struct intel_bw_info {
323 /* for each QGV point */
324 unsigned int deratedbw[I915_NUM_QGV_POINTS];
325 /* for each PSF GV point */
326 unsigned int psf_bw[I915_NUM_PSF_GV_POINTS];
327 /* Peak BW for each QGV point */
328 unsigned int peakbw[I915_NUM_QGV_POINTS];
330 u8 num_psf_gv_points;
336 /* The current hardware cdclk configuration */
337 struct intel_cdclk_config hw;
339 /* cdclk, divider, and ratio table from bspec */
340 const struct intel_cdclk_vals *table;
342 struct intel_global_obj obj;
344 unsigned int max_cdclk_freq;
348 struct drm_property_blob *glk_linear_degamma_lut;
352 /* The current hardware dbuf configuration */
355 struct intel_global_obj obj;
360 * dkl.phy_lock protects against concurrent access of the
367 struct intel_dmc *dmc;
368 intel_wakeref_t wakeref;
372 /* VLV/CHV/BXT/GLK DSI MMIO register base address */
377 /* list of fbdev register on this device */
378 struct intel_fbdev *fbdev;
379 struct work_struct suspend_work;
383 unsigned int pll_freq;
388 struct list_head obj_list;
393 * Base address of where the gmbus and gpio blocks are located
394 * (either on PCH or on SoC for platforms without PCH).
399 * gmbus.mutex protects against concurrent usage of the single
400 * hw gmbus controller on different i2c buses.
404 struct intel_gmbus *bus[GMBUS_NUM_PINS];
406 wait_queue_head_t wait_queue;
410 struct i915_hdcp_arbiter *arbiter;
414 * HDCP message struct for allocation of memory which can be
415 * reused when sending message to gsc cs.
416 * this is only populated post Meteorlake
418 struct intel_hdcp_gsc_message *hdcp_message;
419 /* Mutex to protect the above hdcp related values. */
420 struct mutex hdcp_mutex;
425 * HTI (aka HDPORT) state read during initial hw readout. Most
426 * platforms don't have HTI, so this will just stay 0. Those
427 * that do will use this later to figure out which PLLs and PHYs
428 * are unavailable for driver usage.
434 /* Access with DISPLAY_INFO() */
435 const struct intel_display_device_info *__device_info;
437 /* Access with DISPLAY_RUNTIME_INFO() */
438 struct intel_display_runtime_info __runtime_info;
446 wait_queue_head_t waitqueue;
448 /* mutex to protect pmdemand programming sequence */
451 struct intel_global_obj obj;
455 struct i915_power_domains domains;
457 /* Shadow for DISPLAY_PHY_CONTROL which can't be safely read */
460 /* perform PHY state sanity checks? */
461 bool chv_phy_assert[2];
467 /* protects panel power sequencer state */
472 struct drm_property *broadcast_rgb;
473 struct drm_property *force_audio;
481 /* restore state for suspend/resume and display reset */
482 struct drm_atomic_state *modeset_state;
483 struct drm_modeset_acquire_ctx reset_ctx;
488 I915_SAGV_UNKNOWN = 0,
491 I915_SAGV_NOT_CONTROLLED
499 * DG2: Mask of PHYs that were not calibrated by the firmware
500 * and should not be used.
502 u8 phy_failed_calibration;
507 * Shadows for CHV DPLL_MD regs to keep the state
508 * checker somewhat working in the presence hardware
509 * crappiness (can't read out DPLL_MD for pipes B & C).
511 u32 chv_dpll_md[I915_MAX_PIPES];
516 /* ordered wq for modesets */
517 struct workqueue_struct *modeset;
519 /* unbound hipri wq for page flips/plane updates */
520 struct workqueue_struct *flip;
523 /* Grouping using named structs. Keep sorted. */
524 struct intel_audio audio;
525 struct intel_dpll dpll;
526 struct intel_fbc *fbc[I915_MAX_FBCS];
527 struct intel_frontbuffer_tracking fb_tracking;
528 struct intel_hotplug hotplug;
529 struct intel_opregion opregion;
530 struct intel_overlay *overlay;
531 struct intel_display_params params;
532 struct intel_vbt_data vbt;
536 #endif /* __INTEL_DISPLAY_CORE_H__ */