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
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
|
/* Hisilicon Hibmc SoC drm driver
*
* Based on the bochs drm driver.
*
* Copyright (c) 2016 Huawei Limited.
*
* Author:
* Rongrong Zou <zourongrong@huawei.com>
* Rongrong Zou <zourongrong@gmail.com>
* Jianhua Li <lijianhua@huawei.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/drm_crtc.h>
#include <drm/drm_crtc_helper.h>
#include <drm/drm_fb_helper.h>
#include "hibmc_drm_drv.h"
static int hibmcfb_create_object(
struct hibmc_drm_private *priv,
const struct drm_mode_fb_cmd2 *mode_cmd,
struct drm_gem_object **gobj_p)
{
struct drm_gem_object *gobj;
struct drm_device *dev = priv->dev;
u32 size;
int ret = 0;
size = mode_cmd->pitches[0] * mode_cmd->height;
ret = hibmc_gem_create(dev, size, true, &gobj);
if (ret)
return ret;
*gobj_p = gobj;
return ret;
}
static struct fb_ops hibmc_drm_fb_ops = {
.owner = THIS_MODULE,
.fb_check_var = drm_fb_helper_check_var,
.fb_set_par = drm_fb_helper_set_par,
.fb_fillrect = drm_fb_helper_sys_fillrect,
.fb_copyarea = drm_fb_helper_sys_copyarea,
.fb_imageblit = drm_fb_helper_sys_imageblit,
.fb_pan_display = drm_fb_helper_pan_display,
.fb_blank = drm_fb_helper_blank,
.fb_setcmap = drm_fb_helper_setcmap,
};
static int hibmc_drm_fb_create(struct drm_fb_helper *helper,
struct drm_fb_helper_surface_size *sizes)
{
struct hibmc_fbdev *hi_fbdev =
container_of(helper, struct hibmc_fbdev, helper);
struct hibmc_drm_private *priv = helper->dev->dev_private;
struct fb_info *info;
struct drm_mode_fb_cmd2 mode_cmd;
struct drm_gem_object *gobj = NULL;
int ret = 0;
int ret1;
size_t size;
unsigned int bytes_per_pixel;
struct hibmc_bo *bo = NULL;
DRM_DEBUG_DRIVER("surface width(%d), height(%d) and bpp(%d)\n",
sizes->surface_width, sizes->surface_height,
sizes->surface_bpp);
sizes->surface_depth = 32;
bytes_per_pixel = DIV_ROUND_UP(sizes->surface_bpp, 8);
mode_cmd.width = sizes->surface_width;
mode_cmd.height = sizes->surface_height;
mode_cmd.pitches[0] = mode_cmd.width * bytes_per_pixel;
mode_cmd.pixel_format = drm_mode_legacy_fb_format(sizes->surface_bpp,
sizes->surface_depth);
size = PAGE_ALIGN(mode_cmd.pitches[0] * mode_cmd.height);
ret = hibmcfb_create_object(priv, &mode_cmd, &gobj);
if (ret) {
DRM_ERROR("failed to create fbcon backing object: %d\n", ret);
return -ENOMEM;
}
bo = gem_to_hibmc_bo(gobj);
ret = ttm_bo_reserve(&bo->bo, true, false, NULL);
if (ret) {
DRM_ERROR("failed to reserve ttm_bo: %d\n", ret);
goto out_unref_gem;
}
ret = hibmc_bo_pin(bo, TTM_PL_FLAG_VRAM, NULL);
if (ret) {
DRM_ERROR("failed to pin fbcon: %d\n", ret);
goto out_unreserve_ttm_bo;
}
ret = ttm_bo_kmap(&bo->bo, 0, bo->bo.num_pages, &bo->kmap);
if (ret) {
DRM_ERROR("failed to kmap fbcon: %d\n", ret);
goto out_unpin_bo;
}
ttm_bo_unreserve(&bo->bo);
info = drm_fb_helper_alloc_fbi(helper);
if (IS_ERR(info)) {
ret = PTR_ERR(info);
DRM_ERROR("failed to allocate fbi: %d\n", ret);
goto out_release_fbi;
}
info->par = hi_fbdev;
hi_fbdev->fb = hibmc_framebuffer_init(priv->dev, &mode_cmd, gobj);
if (IS_ERR(hi_fbdev->fb)) {
ret = PTR_ERR(hi_fbdev->fb);
DRM_ERROR("failed to initialize framebuffer: %d\n", ret);
goto out_release_fbi;
}
priv->fbdev->size = size;
hi_fbdev->helper.fb = &hi_fbdev->fb->fb;
strcpy(info->fix.id, "hibmcdrmfb");
info->flags = FBINFO_DEFAULT;
info->fbops = &hibmc_drm_fb_ops;
drm_fb_helper_fill_fix(info, hi_fbdev->fb->fb.pitches[0],
hi_fbdev->fb->fb.format->depth);
drm_fb_helper_fill_var(info, &priv->fbdev->helper, sizes->fb_width,
sizes->fb_height);
info->screen_base = bo->kmap.virtual;
info->screen_size = size;
info->fix.smem_start = bo->bo.mem.bus.offset + bo->bo.mem.bus.base;
info->fix.smem_len = size;
return 0;
out_release_fbi:
ret1 = ttm_bo_reserve(&bo->bo, true, false, NULL);
if (ret1) {
DRM_ERROR("failed to rsv ttm_bo when release fbi: %d\n", ret1);
goto out_unref_gem;
}
ttm_bo_kunmap(&bo->kmap);
out_unpin_bo:
hibmc_bo_unpin(bo);
out_unreserve_ttm_bo:
ttm_bo_unreserve(&bo->bo);
out_unref_gem:
drm_gem_object_unreference_unlocked(gobj);
return ret;
}
static void hibmc_fbdev_destroy(struct hibmc_fbdev *fbdev)
{
struct hibmc_framebuffer *gfb = fbdev->fb;
struct drm_fb_helper *fbh = &fbdev->helper;
drm_fb_helper_unregister_fbi(fbh);
drm_fb_helper_fini(fbh);
if (gfb)
drm_framebuffer_unreference(&gfb->fb);
}
static const struct drm_fb_helper_funcs hibmc_fbdev_helper_funcs = {
.fb_probe = hibmc_drm_fb_create,
};
int hibmc_fbdev_init(struct hibmc_drm_private *priv)
{
int ret;
struct fb_var_screeninfo *var;
struct fb_fix_screeninfo *fix;
struct hibmc_fbdev *hifbdev;
hifbdev = devm_kzalloc(priv->dev->dev, sizeof(*hifbdev), GFP_KERNEL);
if (!hifbdev) {
DRM_ERROR("failed to allocate hibmc_fbdev\n");
return -ENOMEM;
}
priv->fbdev = hifbdev;
drm_fb_helper_prepare(priv->dev, &hifbdev->helper,
&hibmc_fbdev_helper_funcs);
/* Now just one crtc and one channel */
ret = drm_fb_helper_init(priv->dev, &hifbdev->helper, 1);
if (ret) {
DRM_ERROR("failed to initialize fb helper: %d\n", ret);
return ret;
}
ret = drm_fb_helper_single_add_all_connectors(&hifbdev->helper);
if (ret) {
DRM_ERROR("failed to add all connectors: %d\n", ret);
goto fini;
}
ret = drm_fb_helper_initial_config(&hifbdev->helper, 16);
if (ret) {
DRM_ERROR("failed to setup initial conn config: %d\n", ret);
goto fini;
}
var = &hifbdev->helper.fbdev->var;
fix = &hifbdev->helper.fbdev->fix;
DRM_DEBUG_DRIVER("Member of info->var is :\n"
"xres=%d\n"
"yres=%d\n"
"xres_virtual=%d\n"
"yres_virtual=%d\n"
"xoffset=%d\n"
"yoffset=%d\n"
"bits_per_pixel=%d\n"
"...\n", var->xres, var->yres, var->xres_virtual,
var->yres_virtual, var->xoffset, var->yoffset,
var->bits_per_pixel);
DRM_DEBUG_DRIVER("Member of info->fix is :\n"
"smem_start=%lx\n"
"smem_len=%d\n"
"type=%d\n"
"type_aux=%d\n"
"visual=%d\n"
"xpanstep=%d\n"
"ypanstep=%d\n"
"ywrapstep=%d\n"
"line_length=%d\n"
"accel=%d\n"
"capabilities=%d\n"
"...\n", fix->smem_start, fix->smem_len, fix->type,
fix->type_aux, fix->visual, fix->xpanstep,
fix->ypanstep, fix->ywrapstep, fix->line_length,
fix->accel, fix->capabilities);
return 0;
fini:
drm_fb_helper_fini(&hifbdev->helper);
return ret;
}
void hibmc_fbdev_fini(struct hibmc_drm_private *priv)
{
if (!priv->fbdev)
return;
hibmc_fbdev_destroy(priv->fbdev);
priv->fbdev = NULL;
}
|
