webcam does not work (solved)

Question

I'm newbie in Linux, I installed elementary os recently on Sony cr115e and webcam didn't work.
lsusb

Bus 002 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub
Bus 007 Device 001: ID 1d6b:0001 Linux Foundation 1.1 root hub
Bus 006 Device 002: ID 054c:02c1 Sony Corp.
Bus 006 Device 001: ID 1d6b:0001 Linux Foundation 1.1 root hub
Bus 005 Device 001: ID 1d6b:0001 Linux Foundation 1.1 root hub
Bus 001 Device 002: ID 05ca:1839 Ricoh Co., Ltd Visual Communication Camera VGP-VCC6 [R5U870]
Bus 001 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub
Bus 004 Device 001: ID 1d6b:0001 Linux Foundation 1.1 root hub
Bus 003 Device 001: ID 1d6b:0001 Linux Foundation 1.1 root hub

then I tried
sudo modprobe uvcvideo
and nothing.

Answer 1

after 2 day trying I fixed it by:
my laptop webcam is 05ca:1839 and the driver is r5u87x.
so I did these steps:
wget https://download1.rpmfusion.org/nonfree/fedora/development/rawhide/Everything/ aarch64/os/Packages/r/r5u87x-firmware-0.2.0-15.a9b2171d762b.fc33.aarch64.rpm
for converting from rpm to deb
sudo add-apt-repository universe
sudo apt-get install alien
sudo alien r5u87x-firmware-0.2.0-15.a9b2171d762b.fc33.aarch64.rpm
for installing deb file:
sudo dpkg -i r5u87x-firmware_0.2.0-16_amd64.deb
adn sudo apt-get install libglib*-dev libusb-dev build-essential gcc automake mercurial
for enabling
xinput --list
xinput enable 7
and
sudo modprobe -v uvcvideo
sudo modprobe uvcvideo
restart and enjoy.