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
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
|
// SPDX-License-Identifier: GPL-2.0
/*
* Copyright (C) 2018 Texas Instruments Incorporated - http://www.ti.com/
* Author: Tomi Valkeinen <tomi.valkeinen@ti.com>
*/
#include <drm/drm_atomic.h>
#include <drm/drm_atomic_helper.h>
#include <drm/drm_crtc.h>
#include <drm/drm_crtc_helper.h>
#include <drm/drm_fourcc.h>
#include <drm/drm_fb_cma_helper.h>
#include "tidss_crtc.h"
#include "tidss_dispc.h"
#include "tidss_drv.h"
#include "tidss_plane.h"
/* drm_plane_helper_funcs */
static int tidss_plane_atomic_check(struct drm_plane *plane,
struct drm_plane_state *state)
{
struct drm_device *ddev = plane->dev;
struct tidss_device *tidss = to_tidss(ddev);
struct tidss_plane *tplane = to_tidss_plane(plane);
const struct drm_format_info *finfo;
struct drm_crtc_state *crtc_state;
u32 hw_plane = tplane->hw_plane_id;
u32 hw_videoport;
int ret;
dev_dbg(ddev->dev, "%s\n", __func__);
if (!state->crtc) {
/*
* The visible field is not reset by the DRM core but only
* updated by drm_plane_helper_check_state(), set it manually.
*/
state->visible = false;
return 0;
}
crtc_state = drm_atomic_get_crtc_state(state->state, state->crtc);
if (IS_ERR(crtc_state))
return PTR_ERR(crtc_state);
ret = drm_atomic_helper_check_plane_state(state, crtc_state, 0,
INT_MAX, true, true);
if (ret < 0)
return ret;
/*
* The HW is only able to start drawing at subpixel boundary
* (the two first checks bellow). At the end of a row the HW
* can only jump integer number of subpixels forward to the
* beginning of the next row. So we can only show picture with
* integer subpixel width (the third check). However, after
* reaching the end of the drawn picture the drawing starts
* again at the absolute memory address where top left corner
* position of the drawn picture is (so there is no need to
* check for odd height).
*/
finfo = drm_format_info(state->fb->format->format);
if ((state->src_x >> 16) % finfo->hsub != 0) {
dev_dbg(ddev->dev,
"%s: x-position %u not divisible subpixel size %u\n",
__func__, (state->src_x >> 16), finfo->hsub);
return -EINVAL;
}
if ((state->src_y >> 16) % finfo->vsub != 0) {
dev_dbg(ddev->dev,
"%s: y-position %u not divisible subpixel size %u\n",
__func__, (state->src_y >> 16), finfo->vsub);
return -EINVAL;
}
if ((state->src_w >> 16) % finfo->hsub != 0) {
dev_dbg(ddev->dev,
"%s: src width %u not divisible by subpixel size %u\n",
__func__, (state->src_w >> 16), finfo->hsub);
return -EINVAL;
}
if (!state->visible)
return 0;
hw_videoport = to_tidss_crtc(state->crtc)->hw_videoport;
ret = dispc_plane_check(tidss->dispc, hw_plane, state, hw_videoport);
if (ret)
return ret;
return 0;
}
static void tidss_plane_atomic_update(struct drm_plane *plane,
struct drm_plane_state *old_state)
{
struct drm_device *ddev = plane->dev;
struct tidss_device *tidss = to_tidss(ddev);
struct tidss_plane *tplane = to_tidss_plane(plane);
struct drm_plane_state *state = plane->state;
u32 hw_videoport;
int ret;
dev_dbg(ddev->dev, "%s\n", __func__);
if (!state->visible) {
dispc_plane_enable(tidss->dispc, tplane->hw_plane_id, false);
return;
}
hw_videoport = to_tidss_crtc(state->crtc)->hw_videoport;
ret = dispc_plane_setup(tidss->dispc, tplane->hw_plane_id,
state, hw_videoport);
if (ret) {
dev_err(plane->dev->dev, "%s: Failed to setup plane %d\n",
__func__, tplane->hw_plane_id);
dispc_plane_enable(tidss->dispc, tplane->hw_plane_id, false);
return;
}
dispc_plane_enable(tidss->dispc, tplane->hw_plane_id, true);
}
static void tidss_plane_atomic_disable(struct drm_plane *plane,
struct drm_plane_state *old_state)
{
struct drm_device *ddev = plane->dev;
struct tidss_device *tidss = to_tidss(ddev);
struct tidss_plane *tplane = to_tidss_plane(plane);
dev_dbg(ddev->dev, "%s\n", __func__);
dispc_plane_enable(tidss->dispc, tplane->hw_plane_id, false);
}
static void drm_plane_destroy(struct drm_plane *plane)
{
struct tidss_plane *tplane = to_tidss_plane(plane);
drm_plane_cleanup(plane);
kfree(tplane);
}
static const struct drm_plane_helper_funcs tidss_plane_helper_funcs = {
.atomic_check = tidss_plane_atomic_check,
.atomic_update = tidss_plane_atomic_update,
.atomic_disable = tidss_plane_atomic_disable,
};
static const struct drm_plane_funcs tidss_plane_funcs = {
.update_plane = drm_atomic_helper_update_plane,
.disable_plane = drm_atomic_helper_disable_plane,
.reset = drm_atomic_helper_plane_reset,
.destroy = drm_plane_destroy,
.atomic_duplicate_state = drm_atomic_helper_plane_duplicate_state,
.atomic_destroy_state = drm_atomic_helper_plane_destroy_state,
};
struct tidss_plane *tidss_plane_create(struct tidss_device *tidss,
u32 hw_plane_id, u32 plane_type,
u32 crtc_mask, const u32 *formats,
u32 num_formats)
{
struct tidss_plane *tplane;
enum drm_plane_type type;
u32 possible_crtcs;
u32 num_planes = tidss->feat->num_planes;
u32 color_encodings = (BIT(DRM_COLOR_YCBCR_BT601) |
BIT(DRM_COLOR_YCBCR_BT709));
u32 color_ranges = (BIT(DRM_COLOR_YCBCR_FULL_RANGE) |
BIT(DRM_COLOR_YCBCR_LIMITED_RANGE));
u32 default_encoding = DRM_COLOR_YCBCR_BT601;
u32 default_range = DRM_COLOR_YCBCR_FULL_RANGE;
u32 blend_modes = (BIT(DRM_MODE_BLEND_PREMULTI) |
BIT(DRM_MODE_BLEND_COVERAGE));
int ret;
tplane = kzalloc(sizeof(*tplane), GFP_KERNEL);
if (!tplane)
return ERR_PTR(-ENOMEM);
tplane->hw_plane_id = hw_plane_id;
possible_crtcs = crtc_mask;
type = plane_type;
ret = drm_universal_plane_init(&tidss->ddev, &tplane->plane,
possible_crtcs,
&tidss_plane_funcs,
formats, num_formats,
NULL, type, NULL);
if (ret < 0)
goto err;
drm_plane_helper_add(&tplane->plane, &tidss_plane_helper_funcs);
drm_plane_create_zpos_property(&tplane->plane, hw_plane_id, 0,
num_planes - 1);
ret = drm_plane_create_color_properties(&tplane->plane,
color_encodings,
color_ranges,
default_encoding,
default_range);
if (ret)
goto err;
ret = drm_plane_create_alpha_property(&tplane->plane);
if (ret)
goto err;
ret = drm_plane_create_blend_mode_property(&tplane->plane, blend_modes);
if (ret)
goto err;
return tplane;
err:
kfree(tplane);
return ERR_PTR(ret);
}
|
