lwn.git/drivers/media/video/gspca/jl2005bcd.c, branch docs-mw

[media] rename most media/video usb drivers to media/usb

2012-08-15T19:25:07+00:00

Rename all USB drivers with their own directory under drivers/media/video into drivers/media/usb and update the building system. Signed-off-by: Mauro Carvalho Chehab

[media] gspca: Add reset_resume callback to all sub-drivers

2012-07-30T21:39:22+00:00

1) The gspca-core's suspend/resume code is such that resume being called after a reset is safe / ok. 2) All devices tested sofar seem to need the reset_resume callback to work properly over a suspend 3) The USB-core won't call the reset_resume callback for devices which don't need it Thus it seems the simplest and the best to just add the callback to all sub-drivers, rather then adding the callbacks one-by-one as each driver gets tested with suspend/resume. Signed-off-by: Hans de Goede Signed-off-by: Mauro Carvalho Chehab

[media] gspca: the field 'frozen' is under CONFIG_PM

2012-05-20T12:35:42+00:00

The gspca_dev field 'frozen' is added only if CONFIG_PM is set. So add the relevant #ifdef's to various subdrivers that use it. The m32r daily build caught this mistake. Signed-off-by: Hans Verkuil Signed-off-by: Mauro Carvalho Chehab

[media] gspca: Fix locking issues related to suspend/resume

2012-05-14T12:28:39+00:00

There are two bugs here: first the calls to stop0 (in gspca_suspend) and gspca_init_transfer (in gspca_resume) need to be called with the usb_lock held. That's true for the other places they are called and it is what subdrivers expect. Quite a few will unlock the usb_lock in stop0 while waiting for a worker thread to finish, and if usb_lock isn't held then that can cause a kernel oops. The other problem is that a worker thread needs to detect that it has to halt due to a suspend. Otherwise it will just go on looping. So add tests against gspca_dev->frozen in the worker threads that need it. Hdg, 2 minor changes: 1) The finepix device is ok with stopping reading a frame halfway through, so add frozen checks in all places where we also check if we're still streaming 2) Use gspca_dev->dev instead of gspca_dev->present to check for disconnect in all touched drivers. I plan to do this everywhere in the future, and most relevant lines in the touched drivers are already modified by this patch. Signed-off-by: Hans Verkuil Signed-off-by: Hans de Goede Signed-off-by: Mauro Carvalho Chehab

[media] gspca: Add jl2005bcd sub driver

2012-01-06T12:39:45+00:00

Written by Theodore Kilgore With minor changes by Hans de Goede: -Code style fixes -Correct the verbose level on various PDEBUG messages -Make error messages use pr_err instead of PDEBUG -Document the jl20 pixel format Signed-off-by: Theodore Kilgore Signed-off-by: Hans de Goede Signed-off-by: Mauro Carvalho Chehab