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
|
// SPDX-License-Identifier: GPL-2.0
/*
* Copyright (C) 2018 Texas Instruments Incorporated - http://www.ti.com/
* Author: Benoit Parrot <bparrot@ti.com>
*/
#include <drm/drm_atomic.h>
#include <drm/drm_atomic_helper.h>
#include <drm/drm_plane_helper.h>
#include "omap_dmm_tiler.h"
#include "omap_drv.h"
/*
* overlay funcs
*/
static const char * const overlay_id_to_name[] = {
[OMAP_DSS_GFX] = "gfx",
[OMAP_DSS_VIDEO1] = "vid1",
[OMAP_DSS_VIDEO2] = "vid2",
[OMAP_DSS_VIDEO3] = "vid3",
};
/*
* Find a free overlay with the required caps and supported fourcc
*/
static struct omap_hw_overlay *
omap_plane_find_free_overlay(struct drm_device *dev, struct drm_plane *hwoverlay_to_plane[],
u32 caps, u32 fourcc)
{
struct omap_drm_private *priv = dev->dev_private;
int i;
DBG("caps: %x fourcc: %x", caps, fourcc);
for (i = 0; i < priv->num_ovls; i++) {
struct omap_hw_overlay *cur = priv->overlays[i];
DBG("%d: id: %d cur->caps: %x",
cur->idx, cur->id, cur->caps);
/* skip if already in-use */
if (hwoverlay_to_plane[cur->idx])
continue;
/* skip if doesn't support some required caps: */
if (caps & ~cur->caps)
continue;
/* check supported format */
if (!dispc_ovl_color_mode_supported(priv->dispc,
cur->id, fourcc))
continue;
return cur;
}
DBG("no match");
return NULL;
}
/*
* Assign a new overlay to a plane with the required caps and supported fourcc
* If a plane need a new overlay, the previous one should have been released
* with omap_overlay_release()
* This should be called from the plane atomic_check() in order to prepare the
* next global overlay_map to be enabled when atomic transaction is valid.
*/
int omap_overlay_assign(struct drm_atomic_state *s, struct drm_plane *plane,
u32 caps, u32 fourcc, struct omap_hw_overlay **overlay)
{
/* Get the global state of the current atomic transaction */
struct omap_global_state *state = omap_get_global_state(s);
struct drm_plane **overlay_map = state->hwoverlay_to_plane;
struct omap_hw_overlay *ovl;
ovl = omap_plane_find_free_overlay(s->dev, overlay_map, caps, fourcc);
if (!ovl)
return -ENOMEM;
overlay_map[ovl->idx] = plane;
*overlay = ovl;
DBG("%s: assign to plane %s caps %x", ovl->name, plane->name, caps);
return 0;
}
/*
* Release an overlay from a plane if the plane gets not visible or the plane
* need a new overlay if overlay caps changes.
* This should be called from the plane atomic_check() in order to prepare the
* next global overlay_map to be enabled when atomic transaction is valid.
*/
void omap_overlay_release(struct drm_atomic_state *s, struct omap_hw_overlay *overlay)
{
/* Get the global state of the current atomic transaction */
struct omap_global_state *state = omap_get_global_state(s);
struct drm_plane **overlay_map = state->hwoverlay_to_plane;
if (!overlay)
return;
if (WARN_ON(!overlay_map[overlay->idx]))
return;
DBG("%s: release from plane %s", overlay->name, overlay_map[overlay->idx]->name);
overlay_map[overlay->idx] = NULL;
}
/*
* Update an overlay state that was attached to a plane before the current atomic state.
* This should be called from the plane atomic_update() or atomic_disable(),
* where an overlay association to a plane could have changed between the old and current
* atomic state.
*/
void omap_overlay_update_state(struct omap_drm_private *priv,
struct omap_hw_overlay *overlay)
{
struct omap_global_state *state = omap_get_existing_global_state(priv);
struct drm_plane **overlay_map = state->hwoverlay_to_plane;
/* Check if this overlay is not used anymore, then disable it */
if (!overlay_map[overlay->idx]) {
DBG("%s: disabled", overlay->name);
/* disable the overlay */
dispc_ovl_enable(priv->dispc, overlay->id, false);
}
}
static void omap_overlay_destroy(struct omap_hw_overlay *overlay)
{
kfree(overlay);
}
static struct omap_hw_overlay *omap_overlay_init(enum omap_plane_id overlay_id,
enum omap_overlay_caps caps)
{
struct omap_hw_overlay *overlay;
overlay = kzalloc(sizeof(*overlay), GFP_KERNEL);
if (!overlay)
return ERR_PTR(-ENOMEM);
overlay->name = overlay_id_to_name[overlay_id];
overlay->id = overlay_id;
overlay->caps = caps;
return overlay;
}
int omap_hwoverlays_init(struct omap_drm_private *priv)
{
static const enum omap_plane_id hw_plane_ids[] = {
OMAP_DSS_GFX, OMAP_DSS_VIDEO1,
OMAP_DSS_VIDEO2, OMAP_DSS_VIDEO3,
};
u32 num_overlays = dispc_get_num_ovls(priv->dispc);
enum omap_overlay_caps caps;
int i, ret;
for (i = 0; i < num_overlays; i++) {
struct omap_hw_overlay *overlay;
caps = dispc_ovl_get_caps(priv->dispc, hw_plane_ids[i]);
overlay = omap_overlay_init(hw_plane_ids[i], caps);
if (IS_ERR(overlay)) {
ret = PTR_ERR(overlay);
dev_err(priv->dev, "failed to construct overlay for %s (%d)\n",
overlay_id_to_name[i], ret);
omap_hwoverlays_destroy(priv);
return ret;
}
overlay->idx = priv->num_ovls;
priv->overlays[priv->num_ovls++] = overlay;
}
return 0;
}
void omap_hwoverlays_destroy(struct omap_drm_private *priv)
{
int i;
for (i = 0; i < priv->num_ovls; i++) {
omap_overlay_destroy(priv->overlays[i]);
priv->overlays[i] = NULL;
}
priv->num_ovls = 0;
}
|