TBS5580 support in LE10 and LE11 for RPi4

Due to the absence of the CrazyCat drivers for DVB devices like TBS's in LE10 for the Rapsberry Pi 4 for the time being one needs to add them manually by compiling LE.

Here's a patch for the TBS5580 : linux-tbs5580.patch.txt. It's heavily inspired by the patch for the TBS5520SE by smp as both devices are almost identical.

1. Rename the file to remove the ".txt"
2. Place the file in one of the following folders, depending on you preference
   • projects/RPi/devices/RPi4/patches/linux/
   • packages/linux/patches/raspberrypi/
3. Add CONFIG_DVB_USB_TBS5580=m after CONFIG_DVB_USB_TECHNISAT_USB2=m to one of the following files, depending on the arch for which you are building
   • projects/RPi/devices/RPi4/linux/linux.arm.conf
   • projects/RPi/devices/RPi4/linux/linux.aarch64.conf
4. Build your LE image

Enjoy.

Quote from polo_joe

Hi, could you please provide a test build, I have no build environment here.

Here you can find the build I'm using myself:

LibreELEC-RPi4.arm-10.0-devel-20210913174257-beaa0c7.img

It's based on 10.0 stable.

Do note that it contains one more patch for libcec, to revert commit #ef8bc8e to fix issue #326.

Quote from smp

I don't know if it works on 5580 but on 5520SE I enabled the green lock LED with this:

Diff

diff --git a/drivers/media/dvb-frontends/si2183.c b/drivers/media/dvb-frontends/si2183.c
index 4b5bc34..bbe3e96 100644
--- a/drivers/media/dvb-frontends/si2183.c
+++ b/drivers/media/dvb-frontends/si2183.c
@@ -1091,6 +1091,12 @@ static int si2183_init(struct dvb_frontend *fe)
       return ret;
    }
 
+    // set pins
+    memcpy(cmd.args, "\x12\x8\x0", 3);
+    cmd.wlen = 3;
+    cmd.rlen = 3;
+    si2183_cmd_execute(client, &cmd);
+
    dev->fw_loaded = true;
 warm:
    dev->active_fe |= (1 << fe->id);

Display More

Cheers, will give that a try. I didn't even notice the additional led until now

smp the patch works, thanks, I updated the patch in the initial post accordingly.

With the constant amount of light the green led is emitting I'm tempted to remove that bit again though

It only turns off very briefly when I stop watching a channel and than right back on again. Is this supposed to happen? The tuner is also constantly warm, or almost hot (as with LE 9), even when I'm not watching TV. Is this the case with your 5520SE as well?

Quote from smp

Does it turn off then there is no signal from antenna?

Yeah, right away when I disconnect the cable. So all good I suppose. Maybe I can dig up some Tvheadend setting that can put the device in some suspend state when I'm not watching anything.

Quote from CvH

I guess upstreaming (to the linux kernel) this patch is likely not doable ?

Doable yes I suppose, but I don't think that's up to me.

Like smp I simply took the required sources from GitHub - tbsdtv/linux_media: TBS linux open source drivers. It should be TBS upstreaming their work in that repository to the kernel, but for some raison they don't.

Here are the updated kernel patches for LE11:

linux-01_tbs5580_dvb_support.patch.txt

linux-02_si2183_additions.patch.txt

The same changes, split into two separate patch files this time.

The first patch contains the original TBS Linux drivers. The second patch contains two changes on top of that to fix a compile issue and to add support for the green LED.

Compile steps are identical to those in the initial post, except for the removal of the "projects/RPi/devices/RPi4/linux/linux.arm.conf" file.

Here's a build based on LE11.0.1 for those who want to give it a try: https://drive.proton.me/urls/426XA2EBPW#P7SpOnFI6ihC

Do note that it contains the same additional patch as in my previously provided build in post 4.

Here's an updated 11.0.4 RPi4 build, with a minor fix in one of the patches that was needed for the updated kernel.

linux-01_tbs5580_dvb_support.patch.txt

linux-02_si2183_additions.patch.txt

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