1 /*
2 * Copyright (C) 2011 The Android Open Source Project
3 *
4 * Licensed under the Apache License, Version 2.0 (the "License");
5 * you may not use this file except in compliance with the License.
6 * You may obtain a copy of the License at
7 *
8 * http://www.apache.org/licenses/LICENSE-2.0
9 *
10 * Unless required by applicable law or agreed to in writing, software
11 * distributed under the License is distributed on an "AS IS" BASIS,
12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
13 * See the License for the specific language governing permissions and
14 * limitations under the License.
15 */
16
17 #include <errno.h>
18 #include <fcntl.h>
19 #include <linux/fb.h>
20 #include <pthread.h>
21 #include <stdarg.h>
22 #include <stdio.h>
23 #include <stdlib.h>
24 #include <string.h>
25 #include <sys/ioctl.h>
26 #include <sys/time.h>
27 #include <sys/types.h>
28 #include <time.h>
29 #include <unistd.h>
30
31 #include <string>
32
33 #include "common.h"
34 #include "device.h"
35 #include "ui.h"
36 #include "screen_ui.h"
37
38 #define kFBDevice "/dev/graphics/fb0"
39
40 #define FBIO_PSB_SET_RGBX _IOWR('F', 0x42, struct fb_var_screeninfo)
41 #define FBIO_PSB_SET_RMODE _IOWR('F', 0x43, struct fb_var_screeninfo)
42
43 class FuguUI : public ScreenRecoveryUI {
44 public:
Init(const std::string & locale)45 bool Init(const std::string& locale) override {
46 SetupDisplayMode();
47 return ScreenRecoveryUI::Init(locale);
48 }
49
SetupDisplayMode()50 void SetupDisplayMode() {
51 printf("opening fb %s\n", kFBDevice);
52 int fb_dev = open(kFBDevice, O_RDWR);
53 if (fb_dev == -1) {
54 fprintf(stderr, "FAIL: failed to open \"%s\": %s\n", kFBDevice, strerror(errno));
55 return;
56 }
57
58 struct fb_var_screeninfo current_mode;
59 if (ioctl(fb_dev, FBIO_PSB_SET_RMODE, ¤t_mode) == -1) {
60 fprintf(stderr, "FAIL: unable to set RGBX mode on display controller: %s\n",
61 strerror(errno));
62 return;
63 }
64
65 if (ioctl(fb_dev, FBIOGET_VSCREENINFO, ¤t_mode) == -1) {
66 fprintf(stderr, "FAIL: unable to get mode: %s\n", strerror(errno));
67 return;
68 }
69
70 if (ioctl(fb_dev, FBIOBLANK, FB_BLANK_POWERDOWN) == -1) {
71 fprintf(stderr, "FAIL: unable to blank display: %s\n", strerror(errno));
72 return;
73 }
74
75 current_mode.bits_per_pixel = 32;
76 current_mode.red.offset = 0;
77 current_mode.red.length = 8;
78 current_mode.green.offset = 8;
79 current_mode.green.length = 8;
80 current_mode.blue.offset = 16;
81 current_mode.blue.length = 8;
82
83 if (ioctl(fb_dev, FBIOPUT_VSCREENINFO, ¤t_mode) == -1) {
84 fprintf(stderr, "FAIL: unable to set mode: %s\n", strerror(errno));
85 return;
86 }
87
88 if (ioctl(fb_dev, FBIO_PSB_SET_RGBX, ¤t_mode) == -1) {
89 fprintf(stderr, "FAIL: unable to set RGBX mode on display controller: %s\n",
90 strerror(errno));
91 return;
92 }
93
94 if (ioctl(fb_dev, FBIOBLANK, FB_BLANK_UNBLANK) == -1) {
95 fprintf(stderr, "FAIL: unable to unblank display: %s\n", strerror(errno));
96 return;
97 }
98 }
99 };
100
make_device()101 Device* make_device() {
102 return new Device(new FuguUI);
103 }
104