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
230
231
232
233
234
|
/*
* Copyright 2018 NXP
*
* 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.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*/
#include <linux/module.h>
#include <drm/drmP.h>
#include <drm/drm_atomic.h>
#include <drm/drm_atomic_helper.h>
#include <drm/drm_fb_cma_helper.h>
#include <drm/drm_framebuffer.h>
#include <drm/drm_gem_cma_helper.h>
#include <drm/drm_plane.h>
#include <drm/drm_plane_helper.h>
#include <drm/drm_rect.h>
#include <video/imx-lcdif.h>
#include "lcdif-plane.h"
static uint32_t lcdif_pixel_formats[] = {
DRM_FORMAT_XRGB8888,
DRM_FORMAT_ARGB8888,
DRM_FORMAT_RGB565,
DRM_FORMAT_XBGR8888,
DRM_FORMAT_ABGR8888,
DRM_FORMAT_RGBX8888,
DRM_FORMAT_RGBA8888,
DRM_FORMAT_ARGB1555,
DRM_FORMAT_XRGB1555,
DRM_FORMAT_ABGR1555,
DRM_FORMAT_XBGR1555,
DRM_FORMAT_BGR565,
};
static int lcdif_plane_atomic_check(struct drm_plane *plane,
struct drm_plane_state *plane_state)
{
int ret;
struct drm_plane_state *old_state = plane->state;
struct drm_framebuffer *fb = plane_state->fb;
struct drm_framebuffer *old_fb = old_state->fb;
struct drm_crtc_state *crtc_state;
struct drm_display_mode *mode;
struct drm_rect clip = { 0 };
/* 'fb' should also be NULL which has been checked in
* the core sanity check function 'drm_atomic_plane_check()'
*/
if (!plane_state->crtc) {
WARN_ON(fb);
return 0;
}
/* lcdif crtc can only display from (0,0) for each plane */
if (plane_state->crtc_x || plane_state->crtc_y)
return -EINVAL;
crtc_state = drm_atomic_get_existing_crtc_state(plane_state->state,
plane_state->crtc);
mode = &crtc_state->adjusted_mode;
clip.x2 = mode->hdisplay;
clip.y2 = mode->vdisplay;
ret = drm_plane_helper_check_state(plane_state, &clip,
DRM_PLANE_HELPER_NO_SCALING,
DRM_PLANE_HELPER_NO_SCALING,
false, true);
if (ret)
return ret;
if (!plane_state->visible)
return -EINVAL;
/* force 'mode_changed' when fb pitches changed, since
* the pitch related registers configuration of LCDIF
* can not be done when LCDIF is running.
*/
if (old_fb && likely(!crtc_state->mode_changed)) {
if (old_fb->pitches[0] != fb->pitches[0])
crtc_state->mode_changed = true;
}
return 0;
}
static void lcdif_plane_atomic_update(struct drm_plane *plane,
struct drm_plane_state *old_state)
{
struct lcdif_plane *lcdif_plane = to_lcdif_plane(plane);
struct lcdif_soc *lcdif = lcdif_plane->lcdif;
struct drm_plane_state *state = plane->state;
struct drm_framebuffer *fb = state->fb;
struct drm_gem_cma_object *gem_obj = NULL;
u32 fb_addr, src_off, src_w, fb_idx, cpp, stride;
bool crop;
/* plane and crtc is disabling */
if (!fb)
return;
/* TODO: for now we just update the next buf addr
* and the fb pixel format, since the mode set will
* be done in crtc's ->enable() helper func
*/
if (plane->type == DRM_PLANE_TYPE_PRIMARY)
lcdif_set_pix_fmt(lcdif, fb->pixel_format);
switch (plane->type) {
case DRM_PLANE_TYPE_PRIMARY:
/* TODO: only support RGB */
gem_obj = drm_fb_cma_get_gem_obj(fb, 0);
src_off = (state->src_y >> 16) * fb->pitches[0] +
(state->src_x >> 16) * fb->bits_per_pixel;
fb_addr = gem_obj->paddr + fb->offsets[0] + src_off;
fb_idx = 0;
break;
default:
/* TODO: add overlay later */
return;
}
lcdif_set_fb_addr(lcdif, fb_idx, fb_addr);
/* config horizontal cropping if crtc needs modeset */
if (unlikely(drm_atomic_crtc_needs_modeset(state->crtc->state))) {
cpp = fb->bits_per_pixel >> 3;
stride = DIV_ROUND_UP(fb->pitches[0], cpp);
src_w = state->src_w >> 16;
WARN_ON(src_w > fb->width);
crop = src_w != stride ? true : false;
lcdif_set_fb_hcrop(lcdif, src_w, stride, crop);
}
lcdif_enable_controller(lcdif);
}
static void lcdif_plane_atomic_disable(struct drm_plane *plane,
struct drm_plane_state *old_state)
{
struct drm_plane_state *state = plane->state;
struct drm_framebuffer *fb = state->fb;
WARN_ON(fb);
/* TODO: CRTC disabled has been done by CRTC helper function,
* so it seems that no more required, the only possible thing
* is to set next buf addr to 0 in CRTC
*/
}
static const struct drm_plane_helper_funcs lcdif_plane_helper_funcs = {
.atomic_check = lcdif_plane_atomic_check,
.atomic_update = lcdif_plane_atomic_update,
.atomic_disable = lcdif_plane_atomic_disable,
};
static void lcdif_plane_destroy(struct drm_plane *plane)
{
struct lcdif_plane *lcdif_plane = to_lcdif_plane(plane);
drm_plane_cleanup(plane);
kfree(lcdif_plane);
}
static const struct drm_plane_funcs lcdif_plane_funcs = {
.update_plane = drm_atomic_helper_update_plane,
.disable_plane = drm_atomic_helper_disable_plane,
.destroy = lcdif_plane_destroy,
.reset = drm_atomic_helper_plane_reset,
.atomic_duplicate_state = drm_atomic_helper_plane_duplicate_state,
.atomic_destroy_state = drm_atomic_helper_plane_destroy_state,
.set_property = drm_atomic_helper_plane_set_property,
};
struct lcdif_plane *lcdif_plane_init(struct drm_device *dev,
struct lcdif_soc *lcdif,
unsigned int possible_crtcs,
enum drm_plane_type type,
unsigned int zpos)
{
int ret;
struct lcdif_plane *lcdif_plane;
/* lcdif doesn't support fb modifiers */
if (zpos || dev->mode_config.allow_fb_modifiers)
return ERR_PTR(-EINVAL);
lcdif_plane = kzalloc(sizeof(*lcdif_plane), GFP_KERNEL);
if (!lcdif_plane)
return ERR_PTR(-ENOMEM);
lcdif_plane->lcdif = lcdif;
drm_plane_helper_add(&lcdif_plane->base, &lcdif_plane_helper_funcs);
ret = drm_universal_plane_init(dev, &lcdif_plane->base, possible_crtcs,
&lcdif_plane_funcs, lcdif_pixel_formats,
ARRAY_SIZE(lcdif_pixel_formats), NULL,
type, NULL);
if (ret) {
kfree(lcdif_plane);
return ERR_PTR(ret);
}
ret = drm_plane_create_zpos_immutable_property(&lcdif_plane->base, zpos);
if (ret) {
kfree(lcdif_plane);
return ERR_PTR(ret);
}
return lcdif_plane;
}
void lcdif_plane_deinit(struct drm_device *dev,
struct lcdif_plane *lcdif_plane)
{
struct drm_plane *plane = &lcdif_plane->base;
if (plane->zpos_property)
drm_property_destroy(dev, plane->zpos_property);
lcdif_plane_destroy(plane);
}
|
