V4L/DVB: [v5,2/2] v4l: Add a mem-to-mem videobuf framework test device

This is a virtual device driver for testing the memory-to-memory framework.

This virtual device uses in-memory buffers for both its source and destination.
It is capable of multi-instance, multi-buffer-per-transaction operation
(via the mem2mem framework).

[mchehab@redhat.com: use videobuf_queue_to_vaddr instead of the removed videobuf_queue_to_vmalloc]
Signed-off-by: Pawel Osciak <p.osciak@samsung.com>
Signed-off-by: Marek Szyprowski <m.szyprowski@samsung.com>
Signed-off-by: Kyungmin Park <kyungmin.park@samsung.com>
Reviewed-by: Vaibhav Hiremath <hvaibhav@ti.com>
Tested-by: Vaibhav Hiremath <hvaibhav@ti.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>

V4L/DVB: add memory-to-memory device helper framework for videobuf

A mem-to-mem device is a device that uses memory buffers passed by
userspace applications for both their source and destination data. This
is different from existing drivers, which utilize memory buffers for either
input or output, but not both.

In terms of V4L2 such a device would be both of OUTPUT and CAPTURE type.

Examples of such devices would be: image 'resizers', 'rotators',
'colorspace converters', etc.

This patch adds a separate Kconfig sub-menu for mem-to-mem devices as well.

Signed-off-by: Pawel Osciak <p.osciak@samsung.com>
Signed-off-by: Marek Szyprowski <m.szyprowski@samsung.com>
Signed-off-by: Kyungmin Park <kyungmin.park@samsung.com>
Reviewed-by: Vaibhav Hiremath <hvaibhav@ti.com>
Tested-by: Vaibhav Hiremath <hvaibhav@ti.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>

V4L/DVB: core: add support for more color effects

Add support for more color effects (negative, sketch, emboss, etc) by
extending the  v4l2_colorfx enum items.

Signed-off-by: Xiaolin Zhang <xiaolin.zhang@intel.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>

V4L/DVB: V4L: v4l2-subdev driver for AK8813 and AK8814 TV-encoders from AKM

AK8814 only differs from AK8813 by included Macrovision Copy Protection
function. This patch adds a driver for AK8813 and AK8814 I2C PAL/NTSC TV
encoders.

Signed-off-by: Guennadi Liakhovetski <g.liakhovetski@gmx.de>
Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>

V4L/DVB: V4L: SuperH Video Output Unit (VOU) driver

A number of SuperH Mobile SoCs, including sh7724, include a Video Output Unit.
This patch adds a video (V4L2) output driver for it. The driver uses v4l2-subdev
and mediabus APIs to interface to TV encoders.

Signed-off-by: Guennadi Liakhovetski <g.liakhovetski@gmx.de>
Acked-by: Paul Mundt <lethal@linux-sh.org>
Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>

V4L/DVB: videobuf-dma-contig.c: simplify pointer dereference

Signed-off-by: Guennadi Liakhovetski <g.liakhovetski@gmx.de>
Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>

V4L/DVB: sh_mobile_ceu_camera.c: update documentation to reflect the new cropping

Signed-off-by: Guennadi Liakhovetski <g.liakhovetski@gmx.de>
Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>

V4L/DVB: soc-camera: update comment

soc-camera no longer requires .set_crop() implementations to update their
argument. Update the commentary.

Signed-off-by: Guennadi Liakhovetski <g.liakhovetski@gmx.de>
Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>

V4L/DVB: sh_mobile_ceu_camera.c: preserve output window on VIDIOC_S_CROP

Current version of sh_mobile_ceu_camera.c interprets the V4L2 API specification
of the VIDIOC_S_CROP ioctl as "change input (for capture devices) area,
preserve scaling factors, therefore change output window," whereas a more
intuitive interpretation of the API is "change input area, preserve output
window." Switch sh_mobile_ceu_camera.c to use this interpretation.

Signed-off-by: Guennadi Liakhovetski <g.liakhovetski@gmx.de>
Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>

V4L/DVB: vivi: clean up and a major overhaul

- Clean up the code
- Use the kernel's built-in vga8x16 font instead of our own.
- Drop exclusive open: now multiple users can open the device as per the V4L2 spec.
- Move the format description to the vivi device instead of keeping it in the file
  handle. Again as per the spec.
- Streamline and simplify the drawing code. It is now easy to add text on top of
  the colorbar pattern.
- Upgrade the max resolution to 1920x1200.

Signed-off-by: Hans Verkuil <hverkuil@xs4all.nl>
Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>

V4L/DVB: videobuf-dma-sg: Avoid using a wrong size

drivers/media/video/videobuf-dma-sg.c: In function ‘__videobuf_mmap_mapper’:
drivers/media/video/videobuf-dma-sg.c:557: warning: ‘size’ may be used uninitialized in this function

The condition where size is floating should never happen, due to the paranoia check,
but a future change at the logic might break it. So, let's just set size to zero and
use it for the paranoia check.

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

V4L/DVB: gspca - main: Stop the webcam when bandwidth too small

Signed-off-by: Jean-François Moine <moinejf@free.fr>
Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>

V4L/DVB: gspca - main: Restart streaming after reqbuf

Signed-off-by: Jean-François Moine <moinejf@free.fr>
Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>

V4L/DVB: gspca - main: Check the file doing stream on/off

Signed-off-by: Jean-François Moine <moinejf@free.fr>
Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>

V4L/DVB: v4l videobuf: add videobuf_buffer *buf as argument to mmap_mapper

mmap_mapper should operate on a buffer, not on a complete queue. So let
the videobuf-core find the correct buffer instead of duplicating that
code in each mmap_mapper implementation.

The dma-sg implementation has backwards compatibility code for handling
the V4L1_COMPAT layer. This code is now under the v4L1_COMPAT config option.

Signed-off-by: Hans Verkuil <hverkuil@xs4all.nl>
Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>

V4L/DVB: v4l videobuf: move video_copy_to_user and copy_stream to core

The video_copy_to_user and copy_stream ops are almost identical for all
videobuf memtype variants. All that is needed is to use the new vaddr
op and these functions can be moved into the core, ensuring we have just
one single implementation instead of three.

Signed-off-by: Hans Verkuil <hverkuil@xs4all.nl>
Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>

V4L/DVB: v4l videobuf: rename videobuf_queue_to_vmalloc to videobuf_queue_to_vaddr

Ths function returns the virtual kernel address of the buffer and has
nothing to do with allocation.

Signed-off-by: Hans Verkuil <hverkuil@xs4all.nl>
Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>

V4L/DVB: v4l videobuf: rename .vmalloc to .vaddr

Rename the .vmalloc op in struct videobuf_qtype_ops to .vaddr. This op returns
the virtual kernel address of a buffer. vaddr is a lot less confusing than
vmalloc since this callback does do any allocations.

Signed-off-by: Hans Verkuil <hverkuil@xs4all.nl>
Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>

V4L/DVB: v4l videobuf: use struct videobuf_buffer * instead of void * for videobuf_alloc

videobuf_alloc() returned a void *. Change to struct videobuf_buffer *
to get better type checking.

Signed-off-by: Hans Verkuil <hverkuil@xs4all.nl>
Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>

V4L/DVB: v4l videobuf: remove unused is_mmapped field

Thanks to Pawel Osciak for noticing this.

Signed-off-by: Hans Verkuil <hverkuil@xs4all.nl>
Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>

V4L/DVB: v4l videobuf: remove mmap_free callback

Remove the mmap_free callback from struct videobuf_qtype_ops.

All implementations of this callback do the same trivial check: return
-EBUSY if any buffer is mmapped. That can also be tested in the
videobuf core.

Signed-off-by: Hans Verkuil <hverkuil@xs4all.nl>
Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>

V4L/DVB: v4l videobuf: remove unused mmap callback

The mmap callback in struct videobuf_qtype_ops is never used.
Remove.

Signed-off-by: Hans Verkuil <hverkuil@xs4all.nl>
Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>

V4L/DVB: Add firmware v2.4 to xc2028/xc3028 extracting tool

From: Stefan Ringel <stefan.ringel@arcor.de>

The firmware were seen to be needed with some tm6000 devices that don't
work with version 2.7.

Thanks-to: Bee Hock Goh <beehock@gmail.com>
Signed-off-by: Stefan Ringel <stefan.ringel@arcor.de>
Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>

Revert "V4L/DVB: Add FE_CAN_PSK_8 to allow apps to identify PSK_8 capable DVB devices"

Patch reverted per Andreas Oberritter <obi@linuxtv.org> request. It is basically
not ready yet for upstream merge.

This reverts commit 77b2ad374a82e3d740cb1780ff4caedc3e051b37.

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

V4L/DVB: s2255drv: firmware reload on timeout

Signed-off-by: Dean Anderson <linux-dev@sensoray.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>

V4L/DVB: Add FE_CAN_PSK_8 to allow apps to identify PSK_8 capable DVB devices

The enum fe_caps provides flags that allow an application to detect
whether a device is capable of handling various modulation types etc.
A flag for detecting PSK_8, however, is missing.
This patch adds the flag FE_CAN_PSK_8 to frontend.h and implements
it for the gp8psk-fe.c and cx24116.c driver (apparently the only ones
with PSK_8). Only the gp8psk-fe.c has been explicitly tested, though.

Signed-off-by: Klaus Schmidinger <Klaus.Schmidinger@tvdr.de>
Tested-by: Derek Kelly <user.vdr@gmail.com>
Acked-by: Manu Abraham <manu@linuxtv.org>
Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>

V4L/DVB: ir-core: fix some confusing comments

Fix some confusing comments in drivers/media/IR/*

Signed-off-by: David Härdeman <david@hardeman.nu>
Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>

V4L/DVB: ir-core: fix table resize during keymap init

drivers/media/IR/ir-keytable.c would alloc a suitably sized keymap table
only to have it resized as it is populated with the initial keymap.

Signed-off-by: David Härdeman <david@hardeman.nu>
Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>

V4L/DVB: ir-core: fix double spinlock init in drivers/media/IR/rc-map.c

Fix a double initialization of the same spinlock in drivers/media/IR/rc-map.c.

Signed-off-by: David Härdeman <david@hardeman.nu>
Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>

V4L/DVB: ir-core: remove ir-functions usage from dm1105

Convert drivers/media/dvb/dm1105/dm1105.c to not rely on
ir-functions.c.

Signed-off-by: David Härdeman <david@hardeman.nu>
Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>

V4L/DVB: irmon: Cleanup some warning noise

Driver is not properly initializing u64 constants on 32 bit systems:
drivers/media/IR/imon.c:301: warning: integer constant is too large for ‘long’ type
drivers/media/IR/imon.c:302: warning: integer constant is too large for ‘long’ type
drivers/media/IR/imon.c:304: warning: integer constant is too large for ‘long’ type
drivers/media/IR/imon.c:305: warning: integer constant is too large for ‘long’ type
drivers/media/IR/imon.c:308: warning: integer constant is too large for ‘long’ type
drivers/media/IR/imon.c:309: warning: integer constant is too large for ‘long’ type
drivers/media/IR/imon.c:310: warning: integer constant is too large for ‘long’ type

Fix also a few troubles at error printk handling:
drivers/media/IR/imon.c: In function ‘imon_init_intf0’:
drivers/media/IR/imon.c:1909: warning: ‘ret’ may be used uninitialized in this function
drivers/media/IR/imon.c: In function ‘imon_init_intf1’:
drivers/media/IR/imon.c:1989: warning: ‘ret’ may be used uninitialized in this function

Cc: Jarod Wilson <jarod@redhat.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>

V4L/DVB: ir-core: Add Sony support to ir-core

This patch adds a Sony12/15/20 decoder to ir-core.

Signed-off-by: David Härdeman <david@hardeman.nu>
Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>

V4L/DVB: ir-core: Add JVC support to ir-core

This patch adds a JVC decoder to ir-core.

Signed-off-by: David Härdeman <david@hardeman.nu>
Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>

V4L/DVB: ir-core-priv.h: Fix a few CodingStyle errors

As reported by checkpatch.pl:

ERROR: open brace '{' following function declarations go on the next line
+static inline bool geq_margin(unsigned d1, unsigned d2, unsigned margin) {

ERROR: open brace '{' following function declarations go on the next line
+static inline bool eq_margin(unsigned d1, unsigned d2, unsigned margin) {

ERROR: open brace '{' following function declarations go on the next line
+static inline bool is_transition(struct ir_raw_event *x, struct ir_raw_event *y) {

Cc: David Härdeman <david@hardeman.nu>
Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>

V4L/DVB: ir-core: change duration to be coded as a u32 integer

This patch implements the agreed upon 1:31 integer encoded pulse/duration
struct for ir-core raw decoders. All decoders have been tested after the
change. Comments are welcome.

Signed-off-by: David Härdeman <david@hardeman.nu>
Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>

V4L/DVB: ir-core: add imon driver

This is a new driver for the SoundGraph iMON and Antec Veris IR/display
devices commonly found in many home theater pc cases and as after-market
case additions.

[mchehab@redhat.com: add KERN_CONT on line 2098 to shutup checkpatc.pl]

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

V4L/DVB: ir-core: add imon pad and mce keymaps

This adds the keymaps for the hardware decode scancodes imon
devices create for their native imon pad (and mini) remotes,
and the hardware scancodes generated by the imon devices when
used with an rc6 windows media center ed. remote.

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

V4L/DVB: ir-core: make ir_g_keycode_from_table a public function

The imon driver I've previously submitted and have been porting to
use ir-core needs to use ir_g_keycode_from_table, as ir_keydown is
not sufficient, due to these things having really oddball hardware
decoders in them. This just moves the function declaration from
ir-core-priv.h over to ir-core.h.

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

V4L/DVB: s2255drv: removes kref tracking and videodev parent

kref replaced as suggested in code review
uses atomic variable to track when it is ok to delete device
removes setting of video device parent, which is now
handled in v4l2_device.c

Signed-off-by: Dean Anderson <linux-dev@sensoray.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>

V4L/DVB: s2255drv: fix: v4l2_dev should be registered once only.

usb_set_intfdata should not be used when using v4l2_device_register
and a non-NULL argument for the device.

Signed-off-by: Dean Anderson <linux-dev@sensoray.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>

V4L/DVB: pvrusb2-v4l2: Rename dev_info to pdi

There is a macro called dev_info that prints struct device specific
information.  Having variables with the same name can be confusing and
prevents conversion of the macro to a function.

Rename the existing dev_info variables to something else in preparation
to converting the dev_info macro to a function.

Signed-off-by: Joe Perches <joe@perches.com>
Acked-by: Mike Isely <isely@pobox.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>

ir-core: Fix the delete logic

Instead of removing an entry, the logic were doing both a deletion and
a key addition, as shown by the log:

[11517.323314] ir_getkeycode: unknown key for scancode 0x0050
[11517.326529] ir_do_setkeycode: #80: Deleting scan 0x0050
[11517.326529] ir_do_setkeycode: #80: New scan 0x0050 with key 0x0000
[11517.340598] ir_getkeycode: unknown key for scancode 0x0051
[11517.343811] ir_do_setkeycode: #81: Deleting scan 0x0051
[11517.343811] ir_do_setkeycode: #81: New scan 0x0051 with key 0x0000
[11517.357889] ir_getkeycode: unknown key for scancode 0x0052
[11517.361104] ir_do_setkeycode: #82: Deleting scan 0x0052
[11517.361104] ir_do_setkeycode: #82: New scan 0x0052 with key 0x0000
[11517.375453] ir_getkeycode: unknown key for scancode 0x0053
[11517.378474] ir_do_setkeycode: #83: Deleting scan 0x0053
[11517.378474] ir_do_setkeycode: #83: New scan 0x0053 with key 0x0000

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

ir-core: Remove the quotation mark from the uevent names

There's no need to use quotation marks at the uevent names for the
driver and table.

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

V4L/DVB: ir Kconfig: better describe the options

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

V4L/DVB: ir-core-priv: fix a typo for RC6 config option

As Adreas pointed, RC6 should use CONFIG_IR_RC6_DECODER_MODULE, instead
of the RC5 config option.

Thanks-to: Andreas Oberitter <obi@linuxtv.org>
Acked-by: David Härdeman <david@hardeman.nu>
Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>

V4L/DVB: tm6000: fix compilation due to the lack of a semicolon

Add a missing semicolon to fix this error:

In file included from drivers/staging/tm6000/tm6000-cards.c:32:
drivers/staging/tm6000/tm6000.h:123: error: two or more data types in
declaration specifiers

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

V4L/DVB: gspca - vc032x: Change the ov7670 format to YUYV

Signed-off-by: Jean-François Moine <moinejf@free.fr>
Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>

V4L/DVB: gspca - sonixj: Add autogain for sensor gc0307

Signed-off-by: Jean-François Moine <moinejf@free.fr>
Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>

V4L/DVB: gspca - sonixj: Let the JPEG header in the device

Signed-off-by: Jean-François Moine <moinejf@free.fr>
Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>

V4L/DVB: gspca: Change some copyrights and module authors

Signed-off-by: Jean-François Moine <moinejf@free.fr>
Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>

V4L/DVB: TM6000: Fix code which cause memory corruption

The driver was doing malloc when buf is null causing memory corruption.

The analog part is still pretty much broken but at least fixing this
will stop it from crashing the machine when streamon.

Signed-off-by: Bee Hock Goh <beehock@gmail.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>

V4L/DVB: pt1: Support Earthsoft PT2

Support Earthsoft PT2.

Signed-off-by: HIRANO Takahito <hiranotaka@zng.info>
Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>

V4L/DVB: tm6000: request labeling board version check

request labeling board version check

Signed-off-by: Stefan Ringel <stefan.ringel@arcor.de>
Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>

V4L/DVB: tm6000: tm6000_i2c_xfer: request labeling

labeling the request after tuner reading and writeing

Signed-off-by: Stefan Ringel <stefan.ringel@arcor.de>
Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>

V4L/DVB: cx88: improve error handling

Return -EINVAL if we don't find the right query control id.

Signed-off-by: Dan Carpenter <error27@gmail.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>

V4L/DVB: cx231xx: improve error handling

Return -EINVAL if we don't find the control id.

Signed-off-by: Dan Carpenter <error27@gmail.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>

V4L/DVB: [-next] gspca: fix build for INPUT=m or INPUT=n

Handle case of GSPCA=m, INPUT=m when building gspca core;
also handle case of INPUT=n by using stubs.

drivers/media/video/gspca/gspca.c:662: error: implicit declaration of function 'gspca_input_destroy_urb'
drivers/media/video/gspca/gspca.c:668: error: implicit declaration of function 'gspca_input_create_urb'
drivers/media/video/gspca/gspca.c:2284: error: implicit declaration of function 'gspca_input_connect'

Signed-off-by: Randy Dunlap <randy.dunlap@oracle.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>

V4L/DVB: Fix default state Beholder H6 tuner

The hybrid tuner FMD1216MEX_MK3 after cold start has disabled IF. This
tuner has internal I2C switch. This switch switch I2C bus between DVB-T
and IF part. Default state is DVB-T. When module saa7134 is load it
can't find IF tda9887 and disable analog TV mode.

Sets internal I2C switch of the tuner to IF by send special value to the
tuner as for receive analog TV from low band. It can be usefule for
other cards.

I didn't set configure a tuner by a tuner model because this tuner can
have different I2C address. May be we can do it later after discuss for
more robust support a tuners.

Signed-off-by: Beholder Intl. Ltd. Dmitry Belimov <d.belimov@gmail.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>

V4L/DVB: tm6000: add gpios for tm6010 generic board

Signed-off-by: Stefan Ringel <stefan.ringel@arcor.de>
Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>

V4L/DVB: tm6000: add gpios to board struct

Signed-off-by: Stefan Ringel <stefan.ringel@arcor.de>
Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>

V4L/DVB: tm6000: switch to gpio strcut

switch to a gpio structure

Signed-off-by: Stefan Ringel <stefan.ringel@arcor.de>
Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>

V4L/DVB: video/sn9c102: improve error handling

Return an error if the controller is not found.

Signed-off-by: Dan Carpenter <error27@gmail.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>

V4L/DVB: video/et61x251: improve error handling

The original code doesn't handle the situation where the controller is
not found.

Signed-off-by: Dan Carpenter <error27@gmail.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>

V4L/DVB: video/zc0301: improve error handling

Return an error if the controller is not found.

Signed-off-by: Dan Carpenter <error27@gmail.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>

V4L/DVB: video/cx231xx: cleanup. remove unneed null checks

"dev" is never NULL here so there is no need to check.

Signed-off-by: Dan Carpenter <error27@gmail.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>

V4L/DVB: s2255drv: adding v4l2_device structure. video_register_device cleanup

adding v4l2_device structure.
if one video_register_device call fails, allows use of other devices
or channels.

Signed-off-by: Dean Anderson <dean@sensoray.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>

V4L/DVB: s2255drv: cleanup of debug messages

Signed-off-by: Dean Anderson <dean@sensoray.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>

V4L/DVB: s2255drv: removal of big kernel lock

big kernel lock removed from open function.
v4l2 code does not require locking the open function except
to check asynchronous firmware load state, which is protected
by a mutex

Signed-off-by: Dean Anderson <dean@sensoray.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>

V4L/DVB: s2255drv: video_device_alloc call not checked fix

call to video_device_alloc was not being checked in probe function.
code simplified and uses video_device inside device structure.

Signed-off-by: Dean Anderson <dean@sensoray.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>

V4L/DVB: s2255drv: code cleanup

removal of unused pipe array (of size one).

Signed-off-by: Dean Anderson <dean@sensoray.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>

V4L/DVB: s2255drv: cleanup of driver disconnect code

simplifies use of kref in driver

Signed-off-by: Dean Anderson <dean@sensoray.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>

V4L/DVB: video/au0828: off by one bug

The "AUVI_INPUT(tmp)" macro uses "tmp" as an index of an array with
AU0828_MAX_INPUT elements.

Signed-off-by: Dan Carpenter <error27@gmail.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>

V4L/DVB: cx88: fix checks for analog TV inputs

The following patch fixes code that checks for CX88_VMUX_TELEVISION,
but not CX88_VMUX_CABLE. This prevented for example the audio standard
from being set when using the cable input.

Signed-off-by: Istvan Varga <istvanv@users.sourceforge.net>
Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>

V4L/DVB: pwc Kconfig dependency fix

makes USB_PWC_INPUT_EVDEV to depend also on USB_PWC

Signed-off-by: Christoph Fritz <chf.fritz@googlemail.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>

V4L/DVB: budget: Oops: "BUG: unable to handle kernel NULL pointer dereference"

Never call dvb_frontend_detach if we failed to attach a frontend. This fixes
the following oops:

[    8.172997] DVB: registering new adapter (TT-Budget S2-1600 PCI)
[    8.209018] adapter has MAC addr = 00:d0:5c:cc:a7:29
[    8.328665] Intel ICH 0000:00:1f.5: PCI INT B -> GSI 17 (level, low) -> IRQ 17
[    8.328753] Intel ICH 0000:00:1f.5: setting latency timer to 64
[    8.562047] DVB: Unable to find symbol stv090x_attach()
[    8.562117] BUG: unable to handle kernel NULL pointer dereference at 000000ac
[    8.562239] IP: [<e08b04a3>] dvb_frontend_detach+0x4/0x67 [dvb_core]

Ref http://bugs.debian.org/575207

Also clean up if we are unable to register the tuner and LNB drivers

[mchehab@redhat.com: add printk log level, to calm down chechpatch.pl]
Signed-off-by: Bjørn Mork <bjorn@mork.no>
Reported-by: Fladischer Michael <FladischerMichael@fladi.at>
Acked-by: Oliver Endriss <o.endriss@gmx.de>
Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>

V4L/DVB: Add RC6 support to ir-core

This patch adds an RC6 decoder (modes 0 and 6A) to ir-core.

Signed-off-by: David Härdeman <david@hardeman.nu>
Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>

V4L/DVB: Add NECx support to ir-core

This patch adds NECx support to drivers/media/IR/ir-nec-decoder.c

Signed-off-by: David Härdeman <david@hardeman.nu>
Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>

V4L/DVB: Add RC5x support to ir-core

This patch adds RC5x support to drivers/media/IR/ir-rc5-decoder.c

Signed-off-by: David Härdeman <david@hardeman.nu>
Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>

V4L/DVB: ds3000: fix divide-by-zero error in ds3000_read_snr()

Fix a divide-by-zero error in ds3000's ds3000_read_snr(), when getting
a very low signal reading (dvbs2_signal_reading >= 1). This prevents
some nasty EIPs when running szap-s2 with a very low signal strength.

Signed-off-by: Nicolas Noirbent <nicolas.noirbent@smartjog.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>

V4L/DVB: cpia1: comment unused command_setlights()

drivers/media/video/gspca/cpia1.c:1063: warning: ‘command_setlights’ defined but not used

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

V4L/DVB: ir-core: Remove warining noise if decoders compiled builtin

drivers/media/IR/ir-raw-event.c:55: warning: ‘wq_load’ defined but not used
drivers/media/IR/ir-raw-event.c:222: warning: ‘init_decoders’ defined but not used
drivers/media/IR/rc-map.c: In function ‘get_rc_map’:
drivers/media/IR/rc-map.c:40: warning: unused variable ‘rc’

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

V4L/DVB: V4L2: Replace loops for finding max buffers in VIDIOC_REQBUFS callbacks

Due to obvious copy and paste coding a number of video capture drivers
which implement a limit on the buffer memory decremented the user
supplied buffer count in a while loop until it reaches an acceptable
value.

This is a silly thing to do when the maximum value can be directly
computed.

Signed-off-by: Andreas Bombe <aeb@debian.org>
Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>

Revert "V4L/DVB (11906): saa7134: Use v4l bounding/alignment function"

This reverts commit bc52d6eb44de8f19934768d4d10d19fdbdc99950.

On newer kernels, a saa7134 board stopped to display TV video output
properly. After a bisect, I found it as the commit causing the issue.
Turns out that v4l_bound_align_image isn't doing the same bounding
calculation as manually done previously in saa7134_try_fmt_vid_cap.

What isn't equal is the calculation done in clamp align, while
previously it did "f->fmt.pix.width &= ~0x03", clamp_align function
does "Round to nearest aligned value" as stated in the comment, which
yields a different result. If I comment the round calculation in
clamp_align like this: "x = (x /*+ (1 << (align - 1))*/) & mask",
I get it fixed too, because this way the calculation is the same then.

Signed-off-by: Herton Ronaldo Krzesinski <herton@mandriva.com.br>
Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>

V4L/DVB: dvb/dib8000: fix build warning

In file included from drivers/media/dvb/dvb-usb/dib0700_devices.c:14:
  drivers/media/dvb/frontends/dib8000.h: In function 'dib8000_get_adc_power':
  drivers/media/dvb/frontends/dib8000.h:112: warning: no return statement in function returning non-void

Fixed by adding a return to the dummy function.

Signed-off-by: Wolfram Sang <w.sang@pengutronix.de>
Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>

V4L/DVB: DVB: ngene, remove unused #include <linux/version.h>

Remove unused #include <linux/version.h>('s) in
  drivers/media/dvb/ngene/ngene-core.c

Signed-off-by: Huang Weiyi <weiyi.huang@gmail.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>

V4L/DVB: ivtv: move the _IO() decoder ioctls into vidioc_default

Now that video_ioctl2 no longer clobbers the argument for _IO() ioctls we
can move these into vidioc_default where they really belong.

Signed-off-by: Hans Verkuil <hverkuil@xs4all.nl>
Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>

V4L/DVB: video_ioctl2: handle the v4l1 compat bit first and move VIDIOCGMBUF into the switch

Try to make a more sensible sequence of events in __video_do_ioctl: first
check for a valid ops pointer, then get the compat part done. The VIDIOCGMBUF
command is now part of the big switch.

Signed-off-by: Hans Verkuil <hverkuil@xs4all.nl>
Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>

V4L/DVB: v4l2-framework.txt: fix incorrect statement

After unregister_device all fileops are blocked, except for ioctls.
So it is not just the open that is blocked, others are as well.

Signed-off-by: Hans Verkuil <hverkuil@xs4all.nl>
Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>

V4L/DVB: w9966: convert to V4L2

Note that I have not been able to find anyone with this hardware. I tried
contacting the author without success, searched on eBay and similar places
without luck either.

So this conversion is untested. That said, it was pretty straightforward
so it is time to have this driver join the V4L2 world at last.

Signed-off-by: Hans Verkuil <hverkuil@xs4all.nl>
Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>

V4L/DVB: DocBook/v4l/compat.xml: add missing </section>

The indentation of the sections had gone wrong, causing a mistake with
section nesting. Fixed.

Signed-off-by: Hans Verkuil <hverkuil@xs4all.nl>
Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>

V4L/DVB: usbvision: remove non-working vbi device

The usbvision driver created vbi device nodes but the actual implementation
was just stubs and only returned errors to userspace.

In addition it used video_usercopy() and we want to remove that eventually.

So remove all the vbi code except for the vbi flag in the card definition
should someone ever be mad enough to work on a proper implementation for this
driver.

Signed-off-by: Hans Verkuil <hverkuil@xs4all.nl>
Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>

V4L/DVB: video_ioctl2: don't return, use break

You want to be able to reach the debug code at the end of this function,
so don't use return, use break.

Signed-off-by: Hans Verkuil <hverkuil@xs4all.nl>
Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>

V4L/DVB: video_ioctl2: do not replace arg with NULL for _IO() ioctls

If the ioctl was defined without direction (e.g. _IO('o', 25)), then
the arg as passed to vidioc_default was NULL instead of the original
argument.

Several ioctls in e.g. include/linux/dvb/video.h and audio.h use this type
of ioctl to pass simple numerical values to the driver.

Signed-off-by: Hans Verkuil <hverkuil@xs4all.nl>
Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>

V4L/DVB: videodev2.h: move definition of enum v4l2_ctrl_type to the other control types

For some reason the definition of enum v4l2_ctrl_type is far from the
place where it is actually needed. This makes it hard to work with this
header.

Move it to just before struct v4l2_queryctrl, which is the one that
actually uses it.

Signed-off-by: Hans Verkuil <hverkuil@xs4all.nl>
Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>

V4L/DVB: V4L2 Spec: fix V4L2_CTRL_TYPE_CTRL_CLASS documentation

The spec says that the control ID for these types of controls is the same
as that of the control class. But it should read: 'control class + 1'.

Signed-off-by: Hans Verkuil <hverkuil@xs4all.nl>
Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>

V4L/DVB: davinci: don't return under lock on error path

If the kmalloc() failed for "ccdc_cfg = kmalloc(...);" then we would exit
with the lock held.  I moved the mutex_lock() below the allocation
because it isn't protecting anything in that block and allocations are
allocations are sometimes slow.

Signed-off-by: Dan Carpenter <error27@gmail.com>
Acked-by: Vaibhav Hiremath <hvaibhav@ti.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>

V4L/DVB: ir-core: move subsystem internal calls to ir-core-priv.h

ir-core.h has the kABI to be used by the bridge drivers, when needing to register
IR protocols and pass IR events. However, the same file also contains IR subsystem
internal calls, meant to be used inside ir-core and between ir-core and the raw
decoders.

Better to move those functions to an internal header, for some reasons:

1) Header will be a little more cleaner;

2) It avoids the need of recompile everything (bridge/hardware drivers, etc),
   just because a new decoder were added, or some other internal change were needed;

3) Better organize the ir-core API, splitting the functions that are internal to
   IR core and the ancillary drivers (decoders, lirc_dev) from the features that
   should be exported to IR subsystem clients.

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

V4L/DVB: Teach drivers/media/IR/ir-raw-event.c to use durations

drivers/media/IR/ir-raw-event.c is currently written with the assumption
that all "raw" hardware will generate events only on state change (i.e.
when a pulse or space starts).

However, some hardware (like mceusb, probably the most popular IR receiver
out there) only generates duration data (and that data is buffered so using
any kind of timing on the data is futile).

Furthermore, using signed int's to represent pulse/space durations is a
well-known approach when writing ir decoders.

With this patch:

- s64 int's are used to represent pulse/space durations in ns

- a workqueue is used to decode the ir protocols outside of interrupt context

- #defines are added to make decoders clearer

- decoder reset is implemented by passing a zero duration to the kfifo queue
  and decoders are updated accordingly

Signed-off-by: David Härdeman <david@hardeman.nu>
Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>

V4L/DVB: ir-core: fix gcc warning noise

drivers/media/IR/ir-sysfs.c: In function ‘store_protocol’:
drivers/media/IR/ir-sysfs.c:93: warning: suggest parentheses around assignment used as truth value

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

V4L/DVB: ir-core: properly present the supported and current protocols

Hardware decoders have a more limited set of decoders than software ones.
In general, they support just one protocol at a given time, but allow
changing between a few options.

Rename the previous badly named "current_protocol" as just "protocol",
meaning the current protocol(s) accepted by the driver, and
add a "support_protocols" to represent the entire universe of supported
protocols by that specific hardware.

As commented on http://lwn.net/Articles/378884/, the "one file, one value"
rule doesn't fit nor does make much sense for bitmap or enum values. So, the
supported_protocols will enum all supported protocols, and the protocol
will present all active protocols.

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