treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 61

Based on 1 normalized pattern(s):

this program is free software you can redistribute it and or modify
it under the terms of the gnu general public license as published by
the free software foundation either version 2 of the license or at
your option any later version this program is distributed in the
hope that it will be useful but without any warranty without even
the implied warranty of merchantability or fitness for a particular
purpose see the gnu general public license for more details you
should have received a copy of the gnu general public license along
with this program if not write to the free software foundation inc
675 mass ave cambridge ma 02139 usa

extracted by the scancode license scanner the SPDX license identifier

GPL-2.0-or-later

has been chosen to replace the boilerplate/reference in 441 file(s).

Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Reviewed-by: Michael Ellerman <mpe@ellerman.id.au> (powerpc)
Reviewed-by: Richard Fontana <rfontana@redhat.com>
Reviewed-by: Allison Randal <allison@lohutok.net>
Reviewed-by: Kate Stewart <kstewart@linuxfoundation.org>
Cc: linux-spdx@vger.kernel.org
Link: https://lkml.kernel.org/r/20190520071858.739733335@linutronix.de
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

media: mantis: prevent staying forever in a loop at IRQ

As warned by smatch:
drivers/media/pci/mantis/mantis_uart.c:105 mantis_uart_work() warn: this loop depends on readl() succeeding

If something goes wrong at readl(), the logic will stay there
inside an IRQ code forever. This is not the nicest thing to
do :-)

So, add a timeout there, preventing staying inside the IRQ
for more than 10ms.

Signed-off-by: Mauro Carvalho Chehab <mchehab@s-opensource.com>

media: move dvb kAPI headers to include/media

Except for DVB, all media kAPI headers are at include/media.

Move the headers to it.

Signed-off-by: Mauro Carvalho Chehab <mchehab@s-opensource.com>

[media] mantis: cleanup CodingStyle issues due to last commit

Commit a96762da0cfc('[media] mantis: add remote control support')
introduced some new CodingStyle issues. Fix them.

No functional changes.

Signed-off-by: Mauro Carvalho Chehab <mchehab@osg.samsung.com>

[media] mantis: add remote control support

The embedded UART is apparently used to receive decoded IR (RC5?) codes.
Forward these scan codes to the RC framework and (where known) add
corresponding mapping tables to translate them into regular keys.

This patch has been tested on a TechniSat CableStar HD2. The mappings of other
rc-maps were taken from Christoph Pinkl's patch
(http://patchwork.linuxtv.org/patch/7217/) and the s2-liplianin repository. The
major difference to Christoph's patch is a reworked interrupt handling of the
UART because the RX interrupt is apparently level triggered and requires
masking until the FIFO is read by the UART worker.

Signed-off-by: Jan Klötzke <jan@kloetzke.net>
Signed-off-by: Mauro Carvalho Chehab <mchehab@osg.samsung.com>

[media] mantis: get rid of warning: no previous prototype

drivers/media/pci/mantis/mantis_input.c:107:5: warning: no previous prototype for 'mantis_input_init' [-Wmissing-prototypes]
drivers/media/pci/mantis/mantis_input.c:153:5: warning: no previous prototype for 'mantis_exit' [-Wmissing-prototypes]
drivers/media/pci/mantis/mantis_uart.c:64:5: warning: no previous prototype for 'mantis_uart_read' [-Wmissing-prototypes]
drivers/media/pci/mantis/mantis_vp1033.c:118:5: warning: no previous prototype for 'lgtdqcs001f_set_symbol_rate' [-Wmissing-prototypes]
drivers/media/pci/mantis/mantis_vp1033.c:86:5: warning: no previous prototype for 'lgtdqcs001f_tuner_set' [-Wmissing-prototypes]

Note: there is already a mantis_exit at the mantis driver. So,
this should be renamed to mantis_input_exit.

The mantis_input code is currently unused, as it doesn't implement the RC API
right.

Patches for it are sent for discussions, but were never
accepted. So, while this is not fixed, the entire code inside
mantis_input can simply be commented.

Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>

[media] Rename media/dvb as media/pci

The remaining dvb drivers are pci, so rename them to match the
bus.

Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>