tjh.dev
Linux kernel mirror (for testing)
git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git
kernel
os
linux
1/*
2 * Copyright (C) STMicroelectronics SA 2014
3 * Authors: Benjamin Gaignard <benjamin.gaignard@st.com>
4 * Fabien Dessenne <fabien.dessenne@st.com>
5 * for STMicroelectronics.
6 * License terms: GNU General Public License (GPL), version 2
7 */
8
9#include <drm/drmP.h>
10#include <drm/drm_fb_cma_helper.h>
11#include <drm/drm_gem_cma_helper.h>
12
13#include "sti_compositor.h"
14#include "sti_drv.h"
15#include "sti_plane.h"
16
17const char *sti_plane_to_str(struct sti_plane *plane)
18{
19 switch (plane->desc) {
20 case STI_GDP_0:
21 return "GDP0";
22 case STI_GDP_1:
23 return "GDP1";
24 case STI_GDP_2:
25 return "GDP2";
26 case STI_GDP_3:
27 return "GDP3";
28 case STI_HQVDP_0:
29 return "HQVDP0";
30 case STI_CURSOR:
31 return "CURSOR";
32 default:
33 return "<UNKNOWN PLANE>";
34 }
35}
36
37#define STI_FPS_INTERVAL_MS 3000
38
39void sti_plane_update_fps(struct sti_plane *plane,
40 bool new_frame,
41 bool new_field)
42{
43 ktime_t now;
44 struct sti_fps_info *fps;
45 int fpks, fipks, ms_since_last, num_frames, num_fields;
46
47 now = ktime_get();
48
49 /* Compute number of frame updates */
50 fps = &plane->fps_info;
51
52 if (new_field)
53 fps->curr_field_counter++;
54
55 /* do not perform fps calcul if new_frame is false */
56 if (!new_frame)
57 return;
58
59 fps->curr_frame_counter++;
60 ms_since_last = ktime_to_ms(ktime_sub(now, fps->last_timestamp));
61 num_frames = fps->curr_frame_counter - fps->last_frame_counter;
62
63 if (num_frames <= 0 || ms_since_last < STI_FPS_INTERVAL_MS)
64 return;
65
66 fps->last_timestamp = now;
67 fps->last_frame_counter = fps->curr_frame_counter;
68 fpks = (num_frames * 1000000) / ms_since_last;
69 snprintf(plane->fps_info.fps_str, FPS_LENGTH, "%-6s @ %d.%.3d fps",
70 sti_plane_to_str(plane), fpks / 1000, fpks % 1000);
71
72 if (fps->curr_field_counter) {
73 /* Compute number of field updates */
74 num_fields = fps->curr_field_counter - fps->last_field_counter;
75 fps->last_field_counter = fps->curr_field_counter;
76 fipks = (num_fields * 1000000) / ms_since_last;
77 snprintf(plane->fps_info.fips_str,
78 FPS_LENGTH, " - %d.%.3d field/sec",
79 fipks / 1000, fipks % 1000);
80 } else {
81 plane->fps_info.fips_str[0] = '\0';
82 }
83
84 if (fps->output)
85 DRM_INFO("%s%s\n",
86 plane->fps_info.fps_str,
87 plane->fps_info.fips_str);
88}
89
90static int sti_plane_get_default_zpos(enum drm_plane_type type)
91{
92 switch (type) {
93 case DRM_PLANE_TYPE_PRIMARY:
94 return 0;
95 case DRM_PLANE_TYPE_OVERLAY:
96 return 1;
97 case DRM_PLANE_TYPE_CURSOR:
98 return 7;
99 }
100 return 0;
101}
102
103void sti_plane_reset(struct drm_plane *plane)
104{
105 drm_atomic_helper_plane_reset(plane);
106 plane->state->zpos = sti_plane_get_default_zpos(plane->type);
107}
108
109static void sti_plane_attach_zorder_property(struct drm_plane *drm_plane,
110 enum drm_plane_type type)
111{
112 int zpos = sti_plane_get_default_zpos(type);
113
114 switch (type) {
115 case DRM_PLANE_TYPE_PRIMARY:
116 case DRM_PLANE_TYPE_OVERLAY:
117 drm_plane_create_zpos_property(drm_plane, zpos, 0, 6);
118 break;
119 case DRM_PLANE_TYPE_CURSOR:
120 drm_plane_create_zpos_immutable_property(drm_plane, zpos);
121 break;
122 }
123}
124
125void sti_plane_init_property(struct sti_plane *plane,
126 enum drm_plane_type type)
127{
128 sti_plane_attach_zorder_property(&plane->drm_plane, type);
129
130 DRM_DEBUG_DRIVER("drm plane:%d mapped to %s\n",
131 plane->drm_plane.base.id, sti_plane_to_str(plane));
132}