tree ba67f1e8e6825e9f7108c5a8a55e380602fa97af
parent 811872404bb021b73ecb4b78de88bd2d7f26548e
author Mauro Carvalho Chehab <m.chehab@samsung.com> 1407631639 -0300
committer Mauro Carvalho Chehab <m.chehab@samsung.com> 1408652709 -0500

[media] dvb-frontend: add core support for tuner suspend/resume

While several tuners have some sort of suspend/resume
implementation, this is currently mangled with an optional
.sleep callback that it is also used to put the device on
low power mode.

Not all drivers implement it, as returning the driver from
low power may require to re-load the firmware, with takes
some time. Also, some drivers may delay it.

So, the more coherent is to add two new optional callbacks
that will let the tuners to directy implement suspend and
resume callbacks if they need.

Signed-off-by: Mauro Carvalho Chehab <m.chehab@samsung.com>