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
|
/*
* Copyright (C) 2012 Russell King
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License version 2 as
* published by the Free Software Foundation.
*/
#include <drm/drmP.h>
#include <drm/drm_crtc_helper.h>
#include <drm/drm_fb_helper.h>
#include "armada_drm.h"
#include "armada_fb.h"
#include "armada_gem.h"
#include "armada_hw.h"
static void armada_fb_destroy(struct drm_framebuffer *fb)
{
struct armada_framebuffer *dfb = drm_fb_to_armada_fb(fb);
drm_framebuffer_cleanup(&dfb->fb);
drm_gem_object_unreference_unlocked(&dfb->obj->obj);
kfree(dfb);
}
static int armada_fb_create_handle(struct drm_framebuffer *fb,
struct drm_file *dfile, unsigned int *handle)
{
struct armada_framebuffer *dfb = drm_fb_to_armada_fb(fb);
return drm_gem_handle_create(dfile, &dfb->obj->obj, handle);
}
static const struct drm_framebuffer_funcs armada_fb_funcs = {
.destroy = armada_fb_destroy,
.create_handle = armada_fb_create_handle,
};
struct armada_framebuffer *armada_framebuffer_create(struct drm_device *dev,
const struct drm_mode_fb_cmd2 *mode, struct armada_gem_object *obj)
{
struct armada_framebuffer *dfb;
uint8_t format, config;
int ret;
switch (mode->pixel_format) {
#define FMT(drm, fmt, mod) \
case DRM_FORMAT_##drm: \
format = CFG_##fmt; \
config = mod; \
break
FMT(RGB565, 565, CFG_SWAPRB);
FMT(BGR565, 565, 0);
FMT(ARGB1555, 1555, CFG_SWAPRB);
FMT(ABGR1555, 1555, 0);
FMT(RGB888, 888PACK, CFG_SWAPRB);
FMT(BGR888, 888PACK, 0);
FMT(XRGB8888, X888, CFG_SWAPRB);
FMT(XBGR8888, X888, 0);
FMT(ARGB8888, 8888, CFG_SWAPRB);
FMT(ABGR8888, 8888, 0);
FMT(YUYV, 422PACK, CFG_YUV2RGB | CFG_SWAPYU | CFG_SWAPUV);
FMT(UYVY, 422PACK, CFG_YUV2RGB);
FMT(VYUY, 422PACK, CFG_YUV2RGB | CFG_SWAPUV);
FMT(YVYU, 422PACK, CFG_YUV2RGB | CFG_SWAPYU);
FMT(YUV422, 422, CFG_YUV2RGB);
FMT(YVU422, 422, CFG_YUV2RGB | CFG_SWAPUV);
FMT(YUV420, 420, CFG_YUV2RGB);
FMT(YVU420, 420, CFG_YUV2RGB | CFG_SWAPUV);
FMT(C8, PSEUDO8, 0);
#undef FMT
default:
return ERR_PTR(-EINVAL);
}
dfb = kzalloc(sizeof(*dfb), GFP_KERNEL);
if (!dfb) {
DRM_ERROR("failed to allocate Armada fb object\n");
return ERR_PTR(-ENOMEM);
}
dfb->fmt = format;
dfb->mod = config;
dfb->obj = obj;
drm_helper_mode_fill_fb_struct(&dfb->fb, mode);
ret = drm_framebuffer_init(dev, &dfb->fb, &armada_fb_funcs);
if (ret) {
kfree(dfb);
return ERR_PTR(ret);
}
/*
* Take a reference on our object as we're successful - the
* caller already holds a reference, which keeps us safe for
* the above call, but the caller will drop their reference
* to it. Hence we need to take our own reference.
*/
drm_gem_object_reference(&obj->obj);
return dfb;
}
static struct drm_framebuffer *armada_fb_create(struct drm_device *dev,
struct drm_file *dfile, const struct drm_mode_fb_cmd2 *mode)
{
struct armada_gem_object *obj;
struct armada_framebuffer *dfb;
int ret;
DRM_DEBUG_DRIVER("w%u h%u pf%08x f%u p%u,%u,%u\n",
mode->width, mode->height, mode->pixel_format,
mode->flags, mode->pitches[0], mode->pitches[1],
mode->pitches[2]);
/* We can only handle a single plane at the moment */
if (drm_format_num_planes(mode->pixel_format) > 1 &&
(mode->handles[0] != mode->handles[1] ||
mode->handles[0] != mode->handles[2])) {
ret = -EINVAL;
goto err;
}
obj = armada_gem_object_lookup(dfile, mode->handles[0]);
if (!obj) {
ret = -ENOENT;
goto err;
}
if (obj->obj.import_attach && !obj->sgt) {
ret = armada_gem_map_import(obj);
if (ret)
goto err_unref;
}
/* Framebuffer objects must have a valid device address for scanout */
if (obj->dev_addr == DMA_ERROR_CODE) {
ret = -EINVAL;
goto err_unref;
}
dfb = armada_framebuffer_create(dev, mode, obj);
if (IS_ERR(dfb)) {
ret = PTR_ERR(dfb);
goto err;
}
drm_gem_object_unreference_unlocked(&obj->obj);
return &dfb->fb;
err_unref:
drm_gem_object_unreference_unlocked(&obj->obj);
err:
DRM_ERROR("failed to initialize framebuffer: %d\n", ret);
return ERR_PTR(ret);
}
static void armada_output_poll_changed(struct drm_device *dev)
{
struct armada_private *priv = dev->dev_private;
struct drm_fb_helper *fbh = priv->fbdev;
if (fbh)
drm_fb_helper_hotplug_event(fbh);
}
const struct drm_mode_config_funcs armada_drm_mode_config_funcs = {
.fb_create = armada_fb_create,
.output_poll_changed = armada_output_poll_changed,
};
|
