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_power.h"
23 #include "intel_dpll_mgr.h"
24 #include "intel_fbc.h"
25 #include "intel_global_state.h"
26 #include "intel_gmbus.h"
27 #include "intel_opregion.h"
28 #include "intel_wm_types.h"
30 struct drm_i915_private;
32 struct drm_property_blob;
33 struct i915_audio_component;
34 struct i915_hdcp_arbiter;
35 struct intel_atomic_state;
36 struct intel_audio_funcs;
37 struct intel_cdclk_funcs;
38 struct intel_cdclk_vals;
39 struct intel_color_funcs;
41 struct intel_crtc_state;
43 struct intel_dpll_funcs;
44 struct intel_dpll_mgr;
46 struct intel_fdi_funcs;
47 struct intel_hotplug_funcs;
48 struct intel_initial_plane_config;
51 /* Amount of SAGV/QGV points, BSpec precisely defines this */
52 #define I915_NUM_QGV_POINTS 8
54 /* Amount of PSF GV points, BSpec precisely defines this */
55 #define I915_NUM_PSF_GV_POINTS 3
57 struct intel_display_funcs {
59 * Returns the active state of the crtc, and if the crtc is active,
60 * fills out the pipe-config with the hw state.
62 bool (*get_pipe_config)(struct intel_crtc *,
63 struct intel_crtc_state *);
64 void (*get_initial_plane_config)(struct intel_crtc *,
65 struct intel_initial_plane_config *);
66 void (*crtc_enable)(struct intel_atomic_state *state,
67 struct intel_crtc *crtc);
68 void (*crtc_disable)(struct intel_atomic_state *state,
69 struct intel_crtc *crtc);
70 void (*commit_modeset_enables)(struct intel_atomic_state *state);
73 /* functions used for watermark calcs for display. */
74 struct intel_wm_funcs {
75 /* update_wm is for legacy wm management */
76 void (*update_wm)(struct drm_i915_private *dev_priv);
77 int (*compute_pipe_wm)(struct intel_atomic_state *state,
78 struct intel_crtc *crtc);
79 int (*compute_intermediate_wm)(struct intel_atomic_state *state,
80 struct intel_crtc *crtc);
81 void (*initial_watermarks)(struct intel_atomic_state *state,
82 struct intel_crtc *crtc);
83 void (*atomic_update_watermarks)(struct intel_atomic_state *state,
84 struct intel_crtc *crtc);
85 void (*optimize_watermarks)(struct intel_atomic_state *state,
86 struct intel_crtc *crtc);
87 int (*compute_global_watermarks)(struct intel_atomic_state *state);
88 void (*get_hw_state)(struct drm_i915_private *i915);
91 struct intel_audio_state {
92 struct intel_encoder *encoder;
93 u8 eld[MAX_ELD_BYTES];
97 /* hda/i915 audio component */
98 struct i915_audio_component *component;
99 bool component_registered;
100 /* mutex for audio/video sync */
105 /* current audio state for the audio component hooks */
106 struct intel_audio_state state[I915_MAX_TRANSCODERS];
108 /* necessary resource sharing with HDMI LPE audio driver. */
110 struct platform_device *platdev;
116 * dpll and cdclk state is protected by connection_mutex dpll.lock serializes
117 * intel_{prepare,enable,disable}_shared_dpll. Must be global rather than per
118 * dpll, because on some platforms plls share registers.
124 struct intel_shared_dpll shared_dplls[I915_NUM_PLLS];
125 const struct intel_dpll_mgr *mgr;
133 * Bitmask of PLLs using the PCH SSC, indexed using enum intel_dpll_id.
138 struct intel_frontbuffer_tracking {
142 * Tracking bits for delayed frontbuffer flushing du to gpu activity or
149 struct intel_hotplug {
150 struct delayed_work hotplug_work;
152 const u32 *hpd, *pch_hpd;
155 unsigned long last_jiffies;
160 HPD_MARK_DISABLED = 2
162 } stats[HPD_NUM_PINS];
165 struct delayed_work reenable_work;
169 struct work_struct dig_port_work;
171 struct work_struct poll_init_work;
174 unsigned int hpd_storm_threshold;
175 /* Whether or not to count short HPD IRQs in HPD storms */
176 u8 hpd_short_storm_enabled;
178 /* Last state reported by oob_hotplug_event for each encoder */
179 unsigned long oob_hotplug_last_state;
182 * if we get a HPD irq from DP and a HPD irq from non-DP
183 * the non-DP HPD could block the workqueue on a mode config
184 * mutex getting, that userspace may have taken. However
185 * userspace is waiting on the DP workqueue to run which is
186 * blocked behind the non-DP one.
188 struct workqueue_struct *dp_wq;
191 * Flag to track if long HPDs need not to be processed
193 * Some panels generate long HPDs while keep connected to the port.
194 * This can cause issues with CI tests results. In CI systems we
195 * don't expect to disconnect the panels and could ignore the long
196 * HPDs generated from the faulty panels. This flag can be used as
197 * cue to ignore the long HPDs and can be set / unset using debugfs.
199 bool ignore_long_hpd;
202 struct intel_vbt_data {
207 unsigned int int_tv_support:1;
208 unsigned int int_crt_support:1;
209 unsigned int lvds_use_ssc:1;
210 unsigned int int_lvds_support:1;
211 unsigned int display_clock_mode:1;
212 unsigned int fdi_rx_polarity_inverted:1;
214 enum drm_panel_orientation orientation;
216 bool override_afc_startup;
217 u8 override_afc_startup_val;
221 struct list_head display_devices;
222 struct list_head bdb_blocks;
224 struct sdvo_device_mapping {
236 * Raw watermark latency values:
237 * in 0.1us units for WM0,
238 * in 0.5us units for WM1+.
247 * Raw watermark memory latency values
248 * for SKL for all 8 levels
253 /* current hardware state */
255 struct ilk_wm_values hw;
256 struct vlv_wm_values vlv;
257 struct g4x_wm_values g4x;
263 * Should be held around atomic WM register writing; also
264 * protects * intel_crtc->wm.active and
265 * crtc_state->wm.need_postvbl_update.
267 struct mutex wm_mutex;
272 struct intel_display {
273 /* Display functions */
275 /* Top level crtc-ish functions */
276 const struct intel_display_funcs *display;
278 /* Display CDCLK functions */
279 const struct intel_cdclk_funcs *cdclk;
281 /* Display pll funcs */
282 const struct intel_dpll_funcs *dpll;
284 /* irq display functions */
285 const struct intel_hotplug_funcs *hotplug;
287 /* pm display functions */
288 const struct intel_wm_funcs *wm;
290 /* fdi display functions */
291 const struct intel_fdi_funcs *fdi;
293 /* Display internal color functions */
294 const struct intel_color_funcs *color;
296 /* Display internal audio functions */
297 const struct intel_audio_funcs *audio;
300 /* Grouping using anonymous structs. Keep sorted. */
301 struct intel_atomic_helper {
302 struct llist_head free_list;
303 struct work_struct free_work;
307 /* backlight registers and fields in struct intel_panel */
312 struct intel_global_obj obj;
314 struct intel_bw_info {
315 /* for each QGV point */
316 unsigned int deratedbw[I915_NUM_QGV_POINTS];
317 /* for each PSF GV point */
318 unsigned int psf_bw[I915_NUM_PSF_GV_POINTS];
319 /* Peak BW for each QGV point */
320 unsigned int peakbw[I915_NUM_QGV_POINTS];
322 u8 num_psf_gv_points;
328 /* The current hardware cdclk configuration */
329 struct intel_cdclk_config hw;
331 /* cdclk, divider, and ratio table from bspec */
332 const struct intel_cdclk_vals *table;
334 struct intel_global_obj obj;
336 unsigned int max_cdclk_freq;
340 struct drm_property_blob *glk_linear_degamma_lut;
344 /* The current hardware dbuf configuration */
347 struct intel_global_obj obj;
351 wait_queue_head_t waitqueue;
353 /* mutex to protect pmdemand programming sequence */
356 struct intel_global_obj obj;
361 * dkl.phy_lock protects against concurrent access of the
368 struct intel_dmc *dmc;
369 intel_wakeref_t wakeref;
373 /* VLV/CHV/BXT/GLK DSI MMIO register base address */
378 /* list of fbdev register on this device */
379 struct intel_fbdev *fbdev;
380 struct work_struct suspend_work;
384 unsigned int pll_freq;
389 struct list_head obj_list;
394 * Base address of where the gmbus and gpio blocks are located
395 * (either on PCH or on SoC for platforms without PCH).
400 * gmbus.mutex protects against concurrent usage of the single
401 * hw gmbus controller on different i2c buses.
405 struct intel_gmbus *bus[GMBUS_NUM_PINS];
407 wait_queue_head_t wait_queue;
411 struct i915_hdcp_arbiter *arbiter;
415 * HDCP message struct for allocation of memory which can be
416 * reused when sending message to gsc cs.
417 * this is only populated post Meteorlake
419 struct intel_hdcp_gsc_message *hdcp_message;
420 /* Mutex to protect the above hdcp related values. */
421 struct mutex hdcp_mutex;
426 * HTI (aka HDPORT) state read during initial hw readout. Most
427 * platforms don't have HTI, so this will just stay 0. Those
428 * that do will use this later to figure out which PLLs and PHYs
429 * are unavailable for driver usage.
435 /* Access with DISPLAY_INFO() */
436 const struct intel_display_device_info *__device_info;
438 /* Access with DISPLAY_RUNTIME_INFO() */
439 struct intel_display_runtime_info __runtime_info;
447 struct i915_power_domains domains;
449 /* Shadow for DISPLAY_PHY_CONTROL which can't be safely read */
452 /* perform PHY state sanity checks? */
453 bool chv_phy_assert[2];
459 /* protects panel power sequencer state */
464 struct drm_property *broadcast_rgb;
465 struct drm_property *force_audio;
473 /* restore state for suspend/resume and display reset */
474 struct drm_atomic_state *modeset_state;
475 struct drm_modeset_acquire_ctx reset_ctx;
480 I915_SAGV_UNKNOWN = 0,
483 I915_SAGV_NOT_CONTROLLED
491 * DG2: Mask of PHYs that were not calibrated by the firmware
492 * and should not be used.
494 u8 phy_failed_calibration;
499 * Shadows for CHV DPLL_MD regs to keep the state
500 * checker somewhat working in the presence hardware
501 * crappiness (can't read out DPLL_MD for pipes B & C).
503 u32 chv_dpll_md[I915_MAX_PIPES];
508 /* ordered wq for modesets */
509 struct workqueue_struct *modeset;
511 /* unbound hipri wq for page flips/plane updates */
512 struct workqueue_struct *flip;
515 /* Grouping using named structs. Keep sorted. */
516 struct intel_audio audio;
517 struct intel_dpll dpll;
518 struct intel_fbc *fbc[I915_MAX_FBCS];
519 struct intel_frontbuffer_tracking fb_tracking;
520 struct intel_hotplug hotplug;
521 struct intel_opregion opregion;
522 struct intel_overlay *overlay;
523 struct intel_vbt_data vbt;
527 #endif /* __INTEL_DISPLAY_CORE_H__ */