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
|
// SPDX-License-Identifier: GPL-2.0
/*
* (C) COPYRIGHT 2018 ARM Limited. All rights reserved.
* Author: James.Qian.Wang <james.qian.wang@arm.com>
*
*/
#include <linux/clk.h>
#include <linux/pm_runtime.h>
#include <linux/spinlock.h>
#include <drm/drm_atomic.h>
#include <drm/drm_atomic_helper.h>
#include <drm/drm_crtc_helper.h>
#include <drm/drm_plane_helper.h>
#include <drm/drm_print.h>
#include <drm/drm_vblank.h>
#include "komeda_dev.h"
#include "komeda_kms.h"
/* crtc_atomic_check is the final check stage, so beside build a display data
* pipeline according the crtc_state, but still needs to release/disable the
* unclaimed pipeline resources.
*/
static int
komeda_crtc_atomic_check(struct drm_crtc *crtc,
struct drm_crtc_state *state)
{
struct komeda_crtc *kcrtc = to_kcrtc(crtc);
struct komeda_crtc_state *kcrtc_st = to_kcrtc_st(state);
int err;
if (state->active) {
err = komeda_build_display_data_flow(kcrtc, kcrtc_st);
if (err)
return err;
}
/* release unclaimed pipeline resources */
err = komeda_release_unclaimed_resources(kcrtc->master, kcrtc_st);
if (err)
return err;
return 0;
}
void komeda_crtc_handle_event(struct komeda_crtc *kcrtc,
struct komeda_events *evts)
{
struct drm_crtc *crtc = &kcrtc->base;
u32 events = evts->pipes[kcrtc->master->id];
if (events & KOMEDA_EVENT_VSYNC)
drm_crtc_handle_vblank(crtc);
/* will handle it together with the write back support */
if (events & KOMEDA_EVENT_EOW)
DRM_DEBUG("EOW.\n");
/* will handle it with crtc->flush */
if (events & KOMEDA_EVENT_FLIP)
DRM_DEBUG("FLIP Done.\n");
}
static void
komeda_crtc_do_flush(struct drm_crtc *crtc,
struct drm_crtc_state *old)
{
struct komeda_crtc *kcrtc = to_kcrtc(crtc);
struct komeda_crtc_state *kcrtc_st = to_kcrtc_st(crtc->state);
struct komeda_dev *mdev = kcrtc->base.dev->dev_private;
struct komeda_pipeline *master = kcrtc->master;
DRM_DEBUG_ATOMIC("CRTC%d_FLUSH: active_pipes: 0x%x, affected: 0x%x.\n",
drm_crtc_index(crtc),
kcrtc_st->active_pipes, kcrtc_st->affected_pipes);
/* step 1: update the pipeline/component state to HW */
if (has_bit(master->id, kcrtc_st->affected_pipes))
komeda_pipeline_update(master, old->state);
/* step 2: notify the HW to kickoff the update */
mdev->funcs->flush(mdev, master->id, kcrtc_st->active_pipes);
}
static void
komeda_crtc_atomic_flush(struct drm_crtc *crtc,
struct drm_crtc_state *old)
{
/* commit with modeset will be handled in enable/disable */
if (drm_atomic_crtc_needs_modeset(crtc->state))
return;
komeda_crtc_do_flush(crtc, old);
}
struct drm_crtc_helper_funcs komeda_crtc_helper_funcs = {
.atomic_check = komeda_crtc_atomic_check,
.atomic_flush = komeda_crtc_atomic_flush,
};
static const struct drm_crtc_funcs komeda_crtc_funcs = {
};
int komeda_kms_setup_crtcs(struct komeda_kms_dev *kms,
struct komeda_dev *mdev)
{
struct komeda_crtc *crtc;
struct komeda_pipeline *master;
char str[16];
int i;
kms->n_crtcs = 0;
for (i = 0; i < mdev->n_pipelines; i++) {
crtc = &kms->crtcs[kms->n_crtcs];
master = mdev->pipelines[i];
crtc->master = master;
crtc->slave = NULL;
if (crtc->slave)
sprintf(str, "pipe-%d", crtc->slave->id);
else
sprintf(str, "None");
DRM_INFO("crtc%d: master(pipe-%d) slave(%s) output: %s.\n",
kms->n_crtcs, master->id, str,
master->of_output_dev ?
master->of_output_dev->full_name : "None");
kms->n_crtcs++;
}
return 0;
}
static struct drm_plane *
get_crtc_primary(struct komeda_kms_dev *kms, struct komeda_crtc *crtc)
{
struct komeda_plane *kplane;
struct drm_plane *plane;
drm_for_each_plane(plane, &kms->base) {
if (plane->type != DRM_PLANE_TYPE_PRIMARY)
continue;
kplane = to_kplane(plane);
/* only master can be primary */
if (kplane->layer->base.pipeline == crtc->master)
return plane;
}
return NULL;
}
static int komeda_crtc_add(struct komeda_kms_dev *kms,
struct komeda_crtc *kcrtc)
{
struct drm_crtc *crtc = &kcrtc->base;
int err;
err = drm_crtc_init_with_planes(&kms->base, crtc,
get_crtc_primary(kms, kcrtc), NULL,
&komeda_crtc_funcs, NULL);
if (err)
return err;
drm_crtc_helper_add(crtc, &komeda_crtc_helper_funcs);
drm_crtc_vblank_reset(crtc);
crtc->port = kcrtc->master->of_output_port;
return 0;
}
int komeda_kms_add_crtcs(struct komeda_kms_dev *kms, struct komeda_dev *mdev)
{
int i, err;
for (i = 0; i < kms->n_crtcs; i++) {
err = komeda_crtc_add(kms, &kms->crtcs[i]);
if (err)
return err;
}
return 0;
}
|
