我想在嵌入式 Linux 硬件中安装 tslib。
但我不知道设置TSLIB_FBDEVICE所需的“帧缓冲区”是哪个设备。
/dev 文件夹：
/dev $ ls -la
drwxr-xr-x 10 root root 13704 Jun 11 15:03 .
drwxr-xr-x 16 root root 1400 Mar 25 15:52 ..
crw-rw---- 1 root root 189, 258 Jun 11 15:03 3-1
crw-rw-r-- 1 root root 215, 0 Nov 23 2018 PowerManager
crwxrwxrwx 1 root root 130, 0 Nov 23 2018 cadrv
crwxrwxrwx 1 root root 131, 0 Jan 1 1970 causb
crw-rw-r-- 1 root root 205, 0 Nov 23 2018 clcd
crwxrwxrwx 1 root root 133, 0 Jan 1 1970 cldrv
crw-rw-rw- 1 root root 5, 1 Jun 11 15:27 console
crw-rw-r-- 1 root root 10, 70 Nov 23 2018 crypto
crw-rw-r-- 1 root root 201, 0 Nov 23 2018 csx_iod
crw-rw-r-- 1 root root 207, 0 Nov 23 2018 dd
lrwxrwxrwx 1 root root 14 Jan 28 11:34 dsp -> /dev/sound/dsp
crw-rw-r-- 1 root root 221, 0 Nov 23 2018 ept0
crw-rw-rw- 1 root root 29, 0 Nov 23 2018 fb0
crw-rw-r-- 1 root root 202, 0 Nov 23 2018 fb_dma
crw-rw-rw- 1 root root 10, 229 Nov 23 2018 fuse
crw-rw-r-- 1 root root 204, 0 Nov 23 2018 fuse_ipc
drwxrwxr-x 2 root root 288 Mar 20 2012 fusion
drwxrwxr-x 2 root root 160 Mar 20 2012 gadget
crw-rw-r-- 1 root root 203, 0 Nov 23 2018 ge
crw-rw-r-- 1 root root 209, 0 Nov 23 2018 gpio
brw-rw-r-- 1 root root 3, 0 Nov 23 2018 hda
brw-rw-r-- 1 root root 3, 1 Nov 23 2018 hda1
brw-rw-r-- 1 root root 3, 10 Nov 23 2018 hda10
brw-rw-r-- 1 root root 3, 11 Nov 23 2018 hda11
brw-rw-r-- 1 root root 3, 12 Nov 23 2018 hda12
brw-rw-r-- 1 root root 3, 13 Nov 23 2018 hda13
brw-rw-r-- 1 root root 3, 14 Nov 23 2018 hda14
brw-rw-r-- 1 root root 3, 15 Nov 23 2018 hda15
brw-rw-r-- 1 root root 3, 2 Nov 23 2018 hda2
brw-rw-r-- 1 root root 3, 3 Nov 23 2018 hda3
brw-rw-r-- 1 root root 3, 4 Nov 23 2018 hda4
brw-rw-r-- 1 root root 3, 5 Nov 23 2018 hda5
brw-rw-r-- 1 root root 3, 6 Nov 23 2018 hda6
brw-rw-r-- 1 root root 3, 7 Nov 23 2018 hda7
brw-rw-r-- 1 root root 3, 8 Nov 23 2018 hda8
brw-rw-r-- 1 root root 3, 9 Nov 23 2018 hda9
crw-rw-r-- 1 root root 10, 183 Nov 23 2018 hw_random
crwxrwxrwx 1 root root 89, 0 Nov 23 2018 i2c-0
crwxrwxrwx 1 root root 89, 1 Jan 1 1970 i2c-1
drwxrwxr-x 2 root root 608 Mar 20 2012 input
crw-rw-r-- 1 root root 219, 0 Nov 23 2018 iodump
crw-rw-r-- 1 root root 222, 0 Nov 23 2018 keypad0
crw-rw-r-- 1 root root 222, 1 Nov 23 2018 keypad1
crw-rw-r-- 1 root root 1, 2 Nov 23 2018 kmem
crwxrwxrwx 1 root root 129, 0 Nov 23 2018 kmodem
crwxrwxrwx 1 root root 127, 0 Nov 23 2018 kmsdrv
crw-rw-r-- 1 root root 223, 0 Nov 23 2018 lcd
crw-rw-r-- 1 root root 216, 0 Nov 23 2018 led
lrwxrwxrwx 1 root root 13 Dec 10 2015 log -> /var/log/.log
brw-rw-rw- 1 root root 7, 0 Nov 23 2018 loop0
brw-rw-rw- 1 root root 7, 1 Nov 23 2018 loop1
lrwxrwxrwx 1 root root 22 Jan 1 1970 mdev.seq -> /mnt/ramdisk1/mdev.seq
crw-rw-r-- 1 root root 1, 1 Nov 23 2018 mem
lrwxrwxrwx 1 root root 16 Jan 28 11:34 mixer -> /dev/sound/mixer
brw-rw-r-- 1 root root 179, 0 Nov 23 2018 mmcblk0
brw-rw-r-- 1 root root 179, 1 Nov 23 2018 mmcblk0p1
brw-rw-r-- 1 root root 179, 10 Nov 23 2018 mmcblk0p10
brw-rw-r-- 1 root root 179, 2 Nov 23 2018 mmcblk0p2
brw-rw-r-- 1 root root 179, 3 Nov 23 2018 mmcblk0p3
brw-rw-r-- 1 root root 179, 4 Nov 23 2018 mmcblk0p4
brw-rw-r-- 1 root root 179, 5 Nov 23 2018 mmcblk0p5
brw-rw-r-- 1 root root 179, 6 Nov 23 2018 mmcblk0p6
brw-rw-r-- 1 root root 179, 7 Nov 23 2018 mmcblk0p7
brw-rw-r-- 1 root root 179, 8 Nov 23 2018 mmcblk0p8
brw-rw-r-- 1 root root 179, 9 Nov 23 2018 mmcblk0p9
crw-rw-r-- 1 root root 202, 0 Nov 23 2018 mmdma
crw-rw-r-- 1 root root 90, 0 Nov 23 2018 mtd0
crw-rw-r-- 1 root root 90, 1 Nov 23 2018 mtd0-ro
crw-rw-r-- 1 root root 90, 2 Nov 23 2018 mtd1
crw-rw-r-- 1 root root 90, 3 Nov 23 2018 mtd1-ro
crw-rw-r-- 1 root root 90, 20 Nov 23 2018 mtd10
crw-rw-r-- 1 root root 90, 21 Nov 23 2018 mtd10-ro
crw-rw-r-- 1 root root 90, 22 Nov 23 2018 mtd11
crw-rw-r-- 1 root root 90, 23 Nov 23 2018 mtd11-ro
crw-rw-r-- 1 root root 90, 24 Nov 23 2018 mtd12
crw-rw-r-- 1 root root 90, 25 Nov 23 2018 mtd12-ro
crw-rw-r-- 1 root root 90, 26 Nov 23 2018 mtd13
crw-rw-r-- 1 root root 90, 27 Nov 23 2018 mtd13-ro
crw-rw-r-- 1 root root 90, 28 Nov 23 2018 mtd14
crw-rw-r-- 1 root root 90, 29 Nov 23 2018 mtd14-ro
crw-rw-r-- 1 root root 90, 30 Nov 23 2018 mtd15
crw-rw-r-- 1 root root 90, 31 Nov 23 2018 mtd15-ro
crw-rw-r-- 1 root root 90, 4 Nov 23 2018 mtd2
crw-rw-r-- 1 root root 90, 5 Nov 23 2018 mtd2-ro
crw-rw-r-- 1 root root 90, 6 Nov 23 2018 mtd3
crw-rw-r-- 1 root root 90, 7 Nov 23 2018 mtd3-ro
crw-rw-r-- 1 root root 90, 8 Nov 23 2018 mtd4
crw-rw-r-- 1 root root 90, 9 Nov 23 2018 mtd4-ro
crw-rw-r-- 1 root root 90, 10 Nov 23 2018 mtd5
crw-rw-r-- 1 root root 90, 11 Nov 23 2018 mtd5-ro
crw-rw-r-- 1 root root 90, 12 Nov 23 2018 mtd6
crw-rw-r-- 1 root root 90, 13 Nov 23 2018 mtd6-ro
crw-rw-r-- 1 root root 90, 14 Nov 23 2018 mtd7
crw-rw-r-- 1 root root 90, 15 Nov 23 2018 mtd7-ro
crw-rw-r-- 1 root root 90, 16 Nov 23 2018 mtd8
crw-rw-r-- 1 root root 90, 17 Nov 23 2018 mtd8-ro
crw-rw-r-- 1 root root 90, 18 Nov 23 2018 mtd9
crw-rw-r-- 1 root root 90, 19 Nov 23 2018 mtd9-ro
brw-rw-r-- 1 root root 31, 0 Nov 23 2018 mtdb-boot1
brw-rw-r-- 1 root root 31, 1 Nov 23 2018 mtdb-boot2
brw-rw-r-- 1 root root 31, 2 Nov 23 2018 mtdb-ctrl
brw-rw-r-- 1 root root 31, 4 Nov 23 2018 mtdb-k0
brw-rw-r-- 1 root root 31, 5 Nov 23 2018 mtdb-k1
brw-rw-r-- 1 root root 31, 3 Nov 23 2018 mtdb-nvdata
brw-rw-r-- 1 root root 31, 6 Nov 23 2018 mtdb-root0
brw-rw-r-- 1 root root 31, 7 Nov 23 2018 mtdb-root1
brw-rw-r-- 1 root root 31, 0 Nov 23 2018 mtdblock0
brw-rw-r-- 1 root root 31, 1 Nov 23 2018 mtdblock1
brw-rw-r-- 1 root root 31, 2 Nov 23 2018 mtdblock2
brw-rw-r-- 1 root root 31, 3 Nov 23 2018 mtdblock3
brw-rw-r-- 1 root root 31, 4 Nov 23 2018 mtdblock4
brw-rw-r-- 1 root root 31, 5 Nov 23 2018 mtdblock5
brw-rw-r-- 1 root root 31, 6 Nov 23 2018 mtdblock6
crw-rw-r-- 1 root root 90, 0 Nov 23 2018 mtdc-boot1
crw-rw-r-- 1 root root 90, 1 Nov 23 2018 mtdc-boot1-ro
crw-rw-r-- 1 root root 90, 2 Nov 23 2018 mtdc-boot2
crw-rw-r-- 1 root root 90, 3 Nov 23 2018 mtdc-boot2-ro
crw-rw-r-- 1 root root 90, 4 Nov 23 2018 mtdc-ctrl
crw-rw-r-- 1 root root 90, 5 Nov 23 2018 mtdc-ctrl-ro
crw-rw-r-- 1 root root 90, 8 Nov 23 2018 mtdc-k0
crw-rw-r-- 1 root root 90, 9 Nov 23 2018 mtdc-k0-ro
crw-rw-r-- 1 root root 90, 10 Nov 23 2018 mtdc-k1
crw-rw-r-- 1 root root 90, 11 Nov 23 2018 mtdc-k1-ro
crw-rw-r-- 1 root root 90, 6 Nov 23 2018 mtdc-nvdata
crw-rw-r-- 1 root root 90, 7 Nov 23 2018 mtdc-nvdata-ro
crw-rw-r-- 1 root root 90, 12 Nov 23 2018 mtdc-root0
crw-rw-r-- 1 root root 90, 13 Nov 23 2018 mtdc-root0-ro
crw-rw-r-- 1 root root 90, 14 Nov 23 2018 mtdc-root1
crw-rw-r-- 1 root root 90, 15 Nov 23 2018 mtdc-root1-ro
crw-rw-rw- 1 root root 1, 3 Nov 23 2018 null
drwxrwxr-x 2 root root 160 Mar 20 2012 oprofile
crw-rw-r-- 1 root root 211, 0 Nov 23 2018 otp
crw-rw-r-- 1 root root 225, 0 Nov 23 2018 pmu
crw-rw-rw- 1 root root 108, 0 Nov 23 2018 ppp
crw-rw-rw- 1 root root 10, 1 Nov 23 2018 psaux
crw-rw-rw- 1 root root 5, 2 Nov 23 2018 ptmx
drwxr-xr-x 2 root root 0 Jan 1 1970 pts
crw-rw-r-- 1 root root 2, 0 Nov 23 2018 ptyp0
crw-rw-r-- 1 root root 2, 1 Nov 23 2018 ptyp1
crw-rw-r-- 1 root root 2, 2 Nov 23 2018 ptyp2
crw-rw-r-- 1 root root 2, 3 Nov 23 2018 ptyp3
brw-rw-rw- 1 root root 1, 1 Nov 23 2018 ram
crw-rw-r-- 1 root root 1, 8 Nov 23 2018 random
crwxrwxrwx 1 root root 254, 0 Nov 23 2018 rtc
lrwxrwxrwx 1 root root 9 Dec 10 2015 rtc0 -> /tmp/rtc0
crwxrwxrwx 1 root root 132, 0 Nov 23 2018 scdrv
brw-rw-rw- 1 root root 8, 0 Nov 23 2018 sda
brw-rw-rw- 1 root root 8, 1 Nov 23 2018 sda1
brw-rw-rw- 1 root root 8, 2 Nov 23 2018 sda2
brw-rw-rw- 1 root root 8, 3 Nov 23 2018 sda3
brw-rw-rw- 1 root root 8, 16 Nov 23 2018 sdb
brw-rw-rw- 1 root root 8, 17 Nov 23 2018 sdb1
brw-rw-rw- 1 root root 8, 18 Nov 23 2018 sdb2
brw-rw-rw- 1 root root 8, 19 Nov 23 2018 sdb3
brw-rw-rw- 1 root root 8, 32 Nov 23 2018 sdc
brw-rw-rw- 1 root root 8, 48 Nov 23 2018 sdd
crwxrwxrwx 1 root root 126, 0 Nov 23 2018 security
drwxrwxrwt 2 root root 80 Jun 11 12:07 shm
crw-rw-r-- 1 root root 232, 0 Nov 23 2018 sim
drwxrwxrwx 2 root root 504 Jan 28 11:34 snd
drwxrwxrwx 2 root root 480 Jan 28 11:34 sound
-rwxr-xr-x 1 root root 0 Mar 20 2012 sysupd
crw-rw-rw- 1 root root 5, 0 Nov 23 2018 tty
crw-rw-rw- 1 root root 4, 0 Nov 23 2018 tty0
crw-rw-rw- 1 root root 4, 1 Nov 23 2018 tty1
crw-rw-rw- 1 root root 4, 2 Nov 23 2018 tty2
crw-rw-rw- 1 root root 4, 3 Nov 23 2018 tty3
crw-rw-rw- 1 root root 166, 0 Jun 11 15:03 ttyACM0
crw-rw-rw- 1 root root 166, 1 Jun 11 15:03 ttyACM1
crw-rw-rw- 1 root root 166, 2 Jun 11 15:03 ttyACM2
crw-rw-rw- 1 root root 166, 3 Jun 11 15:03 ttyACM3
crw-rw-rw- 1 root root 166, 4 Jun 11 15:03 ttyACM4
crw-rw-rw- 1 root root 166, 5 Jun 11 15:03 ttyACM5
crw-rw-rw- 1 root root 204, 64 Nov 23 2018 ttyAMA0
crw-rw-rw- 1 root root 204, 65 Nov 23 2018 ttyAMA1
crwxrwxrwx 1 root root 251, 0 Jun 11 15:28 ttyGS
crw-rw---- 1 root root 251, 0 Mar 11 11:38 ttyGS0
crwxrwxrwx 1 root root 4, 64 Nov 23 2018 ttyS0
crwxrwxrwx 1 root root 4, 65 Mar 25 10:41 ttyS1
crwxrwxrwx 1 root root 4, 66 Nov 23 2018 ttyS2
crwxrwxrwx 1 root root 4, 67 Nov 23 2018 ttyS3
crwxrwxrwx 1 root root 188, 0 Nov 23 2018 ttyUSB0
crwxrwxrwx 1 root root 188, 1 Nov 23 2018 ttyUSB1
crw-rw-r-- 1 root root 127, 0 Nov 23 2018 ttygserial
crw-rw-r-- 1 root root 3, 0 Nov 23 2018 ttyp0
crw-rw-r-- 1 root root 3, 1 Nov 23 2018 ttyp1
crw-rw-r-- 1 root root 3, 2 Nov 23 2018 ttyp2
crw-rw-r-- 1 root root 3, 3 Nov 23 2018 ttyp3
crw-rw-rw- 1 root root 251, 0 Nov 23 2018 ubi0
crw-rw-rw- 1 root root 251, 2 Nov 23 2018 ubi0_1
lrwxrwxrwx 1 root root 9 Dec 10 2015 ubi1 -> /tmp/ubi1
lrwxrwxrwx 1 root root 9 Dec 10 2015 ubi2 -> /tmp/ubi2
lrwxrwxrwx 1 root root 9 Dec 10 2015 ubi3 -> /tmp/ubi3
crw-rw-rw- 1 root root 10, 60 Nov 23 2018 ubi_ctrl
crw-rw-r-- 1 root root 206, 0 Nov 23 2018 udchp
crw-rw-r-- 1 root root 1, 9 Nov 23 2018 urandom
crw-rw-r-- 1 root root 235, 0 Nov 23 2018 usb-i2c
crw-rw---- 1 root root 189, 258 Apr 10 11:09 usbdev3.3
crw-rw---- 1 root root 7, 2 Jun 10 12:11 vcs2
crw-rw---- 1 root root 7, 3 Jun 10 12:11 vcs3
crw-rw---- 1 root root 7, 130 Jun 10 12:11 vcsa2
crw-rw---- 1 root root 7, 131 Jun 10 12:11 vcsa3
crw-rw-r-- 1 root root 81, 0 Nov 23 2018 video
crw-rw---- 1 root root 10, 130 Nov 23 2018 watchdog
crw-rw-rw- 1 root root 1, 5 Nov 23 2018 zero
如果我尝试使用 /dev/fb0，它不会返回这样的设备：
/dev $ hexdump fb0
hexdump: fb0: No such device
/proc/设备：
/proc $ cat devices
Character devices:
1 mem
2 pty
3 ttyp
4 /dev/vc/0
4 tty
4 ttyS
5 /dev/tty
5 /dev/console
5 /dev/ptmx
7 vcs
10 misc
13 input
14 sound
21 sg
29 fb
81 video4linux
89 i2c
90 mtd
108 ppp
116 alsa
126 security
127 kmsdrv
128 ptm
130 cadrv
132 scdrv
133 cldrv
136 pts
166 ttyACM
180 usb
188 ttyUSB
189 usb_device
209 user-gpio
216 rfcomm
235 sysevent
251 ttyGS
252 hidraw
253 ubi0
254 rtc
Block devices:
1 ramdisk
257 ssfdc
259 blkext
7 loop
8 sd
31 mtdblock
43 nbd
65 sd
66 sd
67 sd
68 sd
69 sd
70 sd
71 sd
128 sd
129 sd
130 sd
131 sd
132 sd
133 sd
134 sd
135 sd
179 mmc
/proc/fb：
/proc $ cat fb
0 BCM5892 LCD
是否有指向默认显示设备的文件？或者初始化此设备的 shell 脚本？
Qt 应用程序可以在该硬件上无问题显示，
谢谢，