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
189
190
191
192
193
194
195
196
197
198
199
200
|
/*
* Copyright (C) 2015 Free Electrons
* Copyright (C) 2015 NextThing Co
*
* Maxime Ripard <maxime.ripard@free-electrons.com>
*
* This program is free software; you can redistribute it and/or
* modify it under the terms of the GNU General Public License as
* published by the Free Software Foundation; either version 2 of
* the License, or (at your option) any later version.
*/
#include <drm/drmP.h>
#include <drm/drm_atomic_helper.h>
#include <drm/drm_crtc.h>
#include <drm/drm_crtc_helper.h>
#include <drm/drm_modes.h>
#include <linux/clk-provider.h>
#include <linux/ioport.h>
#include <linux/of_address.h>
#include <linux/of_graph.h>
#include <linux/of_irq.h>
#include <linux/regmap.h>
#include <video/videomode.h>
#include "sun4i_crtc.h"
#include "sun4i_drv.h"
#include "sunxi_engine.h"
#include "sun4i_tcon.h"
static void sun4i_crtc_atomic_begin(struct drm_crtc *crtc,
struct drm_crtc_state *old_state)
{
struct sun4i_crtc *scrtc = drm_crtc_to_sun4i_crtc(crtc);
struct drm_device *dev = crtc->dev;
unsigned long flags;
if (crtc->state->event) {
WARN_ON(drm_crtc_vblank_get(crtc) != 0);
spin_lock_irqsave(&dev->event_lock, flags);
scrtc->event = crtc->state->event;
spin_unlock_irqrestore(&dev->event_lock, flags);
crtc->state->event = NULL;
}
}
static void sun4i_crtc_atomic_flush(struct drm_crtc *crtc,
struct drm_crtc_state *old_state)
{
struct sun4i_crtc *scrtc = drm_crtc_to_sun4i_crtc(crtc);
struct drm_pending_vblank_event *event = crtc->state->event;
DRM_DEBUG_DRIVER("Committing plane changes\n");
sunxi_engine_commit(scrtc->engine);
if (event) {
crtc->state->event = NULL;
spin_lock_irq(&crtc->dev->event_lock);
if (drm_crtc_vblank_get(crtc) == 0)
drm_crtc_arm_vblank_event(crtc, event);
else
drm_crtc_send_vblank_event(crtc, event);
spin_unlock_irq(&crtc->dev->event_lock);
}
}
static void sun4i_crtc_disable(struct drm_crtc *crtc)
{
struct sun4i_crtc *scrtc = drm_crtc_to_sun4i_crtc(crtc);
DRM_DEBUG_DRIVER("Disabling the CRTC\n");
sun4i_tcon_disable(scrtc->tcon);
if (crtc->state->event && !crtc->state->active) {
spin_lock_irq(&crtc->dev->event_lock);
drm_crtc_send_vblank_event(crtc, crtc->state->event);
spin_unlock_irq(&crtc->dev->event_lock);
crtc->state->event = NULL;
}
}
static void sun4i_crtc_enable(struct drm_crtc *crtc)
{
struct sun4i_crtc *scrtc = drm_crtc_to_sun4i_crtc(crtc);
DRM_DEBUG_DRIVER("Enabling the CRTC\n");
sun4i_tcon_enable(scrtc->tcon);
}
static const struct drm_crtc_helper_funcs sun4i_crtc_helper_funcs = {
.atomic_begin = sun4i_crtc_atomic_begin,
.atomic_flush = sun4i_crtc_atomic_flush,
.disable = sun4i_crtc_disable,
.enable = sun4i_crtc_enable,
};
static int sun4i_crtc_enable_vblank(struct drm_crtc *crtc)
{
struct sun4i_crtc *scrtc = drm_crtc_to_sun4i_crtc(crtc);
DRM_DEBUG_DRIVER("Enabling VBLANK on crtc %p\n", crtc);
sun4i_tcon_enable_vblank(scrtc->tcon, true);
return 0;
}
static void sun4i_crtc_disable_vblank(struct drm_crtc *crtc)
{
struct sun4i_crtc *scrtc = drm_crtc_to_sun4i_crtc(crtc);
DRM_DEBUG_DRIVER("Disabling VBLANK on crtc %p\n", crtc);
sun4i_tcon_enable_vblank(scrtc->tcon, false);
}
static const struct drm_crtc_funcs sun4i_crtc_funcs = {
.atomic_destroy_state = drm_atomic_helper_crtc_destroy_state,
.atomic_duplicate_state = drm_atomic_helper_crtc_duplicate_state,
.destroy = drm_crtc_cleanup,
.page_flip = drm_atomic_helper_page_flip,
.reset = drm_atomic_helper_crtc_reset,
.set_config = drm_atomic_helper_set_config,
.enable_vblank = sun4i_crtc_enable_vblank,
.disable_vblank = sun4i_crtc_disable_vblank,
};
struct sun4i_crtc *sun4i_crtc_init(struct drm_device *drm,
struct sunxi_engine *engine,
struct sun4i_tcon *tcon)
{
struct sun4i_crtc *scrtc;
struct drm_plane **planes;
struct drm_plane *primary = NULL, *cursor = NULL;
int ret, i;
scrtc = devm_kzalloc(drm->dev, sizeof(*scrtc), GFP_KERNEL);
if (!scrtc)
return ERR_PTR(-ENOMEM);
scrtc->engine = engine;
scrtc->tcon = tcon;
/* Create our layers */
planes = sunxi_engine_layers_init(drm, engine);
if (IS_ERR(planes)) {
dev_err(drm->dev, "Couldn't create the planes\n");
return NULL;
}
/* find primary and cursor planes for drm_crtc_init_with_planes */
for (i = 0; planes[i]; i++) {
struct drm_plane *plane = planes[i];
switch (plane->type) {
case DRM_PLANE_TYPE_PRIMARY:
primary = plane;
break;
case DRM_PLANE_TYPE_CURSOR:
cursor = plane;
break;
default:
break;
}
}
ret = drm_crtc_init_with_planes(drm, &scrtc->crtc,
primary,
cursor,
&sun4i_crtc_funcs,
NULL);
if (ret) {
dev_err(drm->dev, "Couldn't init DRM CRTC\n");
return ERR_PTR(ret);
}
drm_crtc_helper_add(&scrtc->crtc, &sun4i_crtc_helper_funcs);
/* Set crtc.port to output port node of the tcon */
scrtc->crtc.port = of_graph_get_port_by_id(scrtc->tcon->dev->of_node,
1);
/* Set possible_crtcs to this crtc for overlay planes */
for (i = 0; planes[i]; i++) {
uint32_t possible_crtcs = BIT(drm_crtc_index(&scrtc->crtc));
struct drm_plane *plane = planes[i];
if (plane->type == DRM_PLANE_TYPE_OVERLAY)
plane->possible_crtcs = possible_crtcs;
}
return scrtc;
}
|
