intel_display_snapshot.c

 1// SPDX-License-Identifier: MIT
 2/* Copyright © 2024 Intel Corporation */
 3
 4#include <linux/slab.h>
 5
 6#include <drm/drm_drv.h>
 7
 8#include "intel_display_core.h"
 9#include "intel_display_device.h"
10#include "intel_display_irq.h"
11#include "intel_display_params.h"
12#include "intel_display_snapshot.h"
13#include "intel_dmc.h"
14#include "intel_overlay.h"
15
16struct intel_display_snapshot {
17	struct intel_display *display;
18
19	struct intel_display_device_info info;
20	struct intel_display_runtime_info runtime_info;
21	struct intel_display_params params;
22	struct intel_overlay_snapshot *overlay;
23	struct intel_dmc_snapshot *dmc;
24	struct intel_display_irq_snapshot *irq;
25};
26
27struct intel_display_snapshot *intel_display_snapshot_capture(struct intel_display *display)
28{
29	struct intel_display_snapshot *snapshot;
30
31	snapshot = kzalloc(sizeof(*snapshot), GFP_ATOMIC);
32	if (!snapshot)
33		return NULL;
34
35	snapshot->display = display;
36
37	memcpy(&snapshot->info, DISPLAY_INFO(display), sizeof(snapshot->info));
38	memcpy(&snapshot->runtime_info, DISPLAY_RUNTIME_INFO(display),
39	       sizeof(snapshot->runtime_info));
40
41	intel_display_params_copy(&snapshot->params);
42
43	snapshot->irq = intel_display_irq_snapshot_capture(display);
44	snapshot->overlay = intel_overlay_snapshot_capture(display);
45	snapshot->dmc = intel_dmc_snapshot_capture(display);
46
47	return snapshot;
48}
49
50void intel_display_snapshot_print(const struct intel_display_snapshot *snapshot,
51				  struct drm_printer *p)
52{
53	struct intel_display *display;
54
55	if (!snapshot)
56		return;
57
58	display = snapshot->display;
59
60	intel_display_device_info_print(&snapshot->info, &snapshot->runtime_info, p);
61	intel_display_params_dump(&snapshot->params, display->drm->driver->name, p);
62
63	intel_display_irq_snapshot_print(snapshot->irq, p);
64	intel_overlay_snapshot_print(snapshot->overlay, p);
65	intel_dmc_snapshot_print(snapshot->dmc, p);
66}
67
68void intel_display_snapshot_free(struct intel_display_snapshot *snapshot)
69{
70	if (!snapshot)
71		return;
72
73	intel_display_params_free(&snapshot->params);
74
75	kfree(snapshot->irq);
76	kfree(snapshot->overlay);
77	kfree(snapshot->dmc);
78	kfree(snapshot);
79}