Hi, On 8/10/22 12:24, Mauro Carvalho Chehab wrote: > Em Wed, 10 Aug 2022 10:18:56 +0200 > Hans Verkuil <hverkuil@xxxxxxxxx> escreveu: > >> We have the following drivers still using vb1: >> >> PCI: saa7146, bt8xx, cx18 >> USB: zr364xx, tm6000 >> platform: ti/davinci/vpfe_capture, nxp/fsl-viu >> staging: atomisp >> >> And these drivers rolls their own streaming I/O implementation: >> >> pci: meye >> usb: cpia2 >> staging: stkwebcam (deprecated, to be removed by the end of the year) >> >> I think we should bite the bullet and move all of these drivers to staging, >> mark them deprecated and delete them some time next year if nobody will >> convert them to vb2. >> >> That includes atomisp: is that going anywhere? Unless someone does the >> hard work of converting it to vb2 I think it should be removed as well. > > There have been improvements at atomisp driver. Hans de Goede has been > doing some work. As far as I understand, he's planning to get VB2 and > libcamera support for it. I'm also working on it when I have some spare > time available. Correct I'm planning to convert the atomisp code to vb2. I hope to resume work on this again soon-ish. >> The two drivers most likely to still be in use somewhere are bt8xx and >> cx18. If it turns out that we can't remove them (yet), then I can probably >> justify the time to convert cx18 to vb2 myself. > > Yeah, bt8xx is probably still widely used, specially on analog camera > multi-port capture scenarios. Not sure about cx18 usage those days. > > IMO, once we get bt8xx, atomisp (and maybe cx18) converted to VB2, it > should be OK to remove the other drivers. > > For now, we can move them to staging, adding a TODO explaining that they > should be ported to VB2 or they'll be removed. > > Scheduling removal to the end of the year is probably not doable, as > the patch moving them to staging would be merged only around Oct. > We should grant at least two Kernel cycles for people to convert the > drivers - assuming that someone would do that for some driver(s). > >> And for bt8xx I would probably be willing to convert it to vb2 as well, >> provided we can strip the overlay support from the driver (since, if memory >> serves, vb2 doesn't support that) and convert it to vb2. It's a big job, though. > > It sounds OK on my eyes to remove overlay support from bt8xx during VB2 > conversion. We should probably add a warning about such removal before > that (see below). About bt8xx support. At least in the Netherlands the cable companies have stopped sending analog TV over the cable (only DVB now) so I've remove my bt8xx tv-card from my machine after many years of using it. I believe something similar is happening in most of the rest of Europe at least. Regards, Hans
