media: atomisp: remove several duplicated files

Those files have identical contents, but are located at
different parts of the driver. As their contents are identical,
we can simply remove them.

Signed-off-by: Mauro Carvalho Chehab <mchehab+huawei@kernel.org>

media: atomisp: remove unused definitions at */isp_capture_defs.h

The isp_capture_defs.h contain several unused defines.
Get rid of some of them, making all 3 instances identical.

Signed-off-by: Mauro Carvalho Chehab <mchehab+huawei@kernel.org>

media: atomisp: get rid of unused header files

Those 4 header files aren't used anyware. So, send them to
the trash can.

Signed-off-by: Mauro Carvalho Chehab <mchehab+huawei@kernel.org>

media: atomisp: get rid of trivial ISP2401 dependencies on header files

On several header files, the dependency for ISP2401 is
trivial: for example, it just adds new fields on structs or
declare new functions.

Get rid of those trivial cases.

Signed-off-by: Mauro Carvalho Chehab <mchehab+huawei@kernel.org>

media: atomisp: get rid of several typedef-style defines

Those vars aren't used anymore at this driver. Get rid of
them.

Signed-off-by: Mauro Carvalho Chehab <mchehab+huawei@kernel.org>

media: atomisp: isp_const.h: get rid of an unused big define list

None of those SH_CSS_BINARY_ID_* symbols are used by this driver
anymore. So, get rid of all of them.

Signed-off-by: Mauro Carvalho Chehab <mchehab+huawei@kernel.org>

media: atomisp: sh_css: detect ISP version at runtime

Get rid of all those ifdefs that were checking for ISP2401 inside
sh_css.c.

Signed-off-by: Mauro Carvalho Chehab <mchehab+huawei@kernel.org>

media: atomisp: make util.c work with ISP2401 runtime detection

Don't hide those small functions behind ifdefs.

Signed-off-by: Mauro Carvalho Chehab <mchehab+huawei@kernel.org>

media: atomisp: get rid of some non-existing functions for ISP2401

There are no ia_css_set_system_mode() nor
ia_css_is_system_mode_suspend_or_resume() functions at the driver.

So, get rid of the code that would try to call it.

Signed-off-by: Mauro Carvalho Chehab <mchehab+huawei@kernel.org>

media: atomisp: ia_css_binary_get_shading_info(): don't test version

It doesn't make any sense to change the number of parameters
for this function depending on the ISP version.

Signed-off-by: Mauro Carvalho Chehab <mchehab+huawei@kernel.org>

media: atomisp: css_trace.h: use the newest tracing code

The css_trace header for ISP2401 also builds on older versions, and
seems to be compatible with all versions. So, remove all ifdefs
in favor of the CSP2401 version.

Signed-off-by: Mauro Carvalho Chehab <mchehab+huawei@kernel.org>

media: atomisp: add support for possible new names

This patch addresses what it sounds to be a change at the
name of some ACPI registers on newer ACPI tables.

Signed-off-by: Mauro Carvalho Chehab <mchehab+huawei@kernel.org>

media: atomisp: print css_version in runtime

The CSS version returned by ISP2400 is different than the one
returned by ISP2401.

While we could return just one version for both, as this sounds
like just an informative string, for now, let's keep returning
different versions, as we don't know if this would affect
userspace.

Signed-off-by: Mauro Carvalho Chehab <mchehab+huawei@kernel.org>

media: atomisp: sh_css_param_dvs.h remove ISP version macros

As namespaces aren't duplicated here, just remove the ifdefs.

Signed-off-by: Mauro Carvalho Chehab <mchehab+huawei@kernel.org>

media: atomisp: unify sh_css_params_shading_id_table_generate()

Instead of packing parameters differently on ISP2400 and ISP2401,
use just one way of passing them for both.

Signed-off-by: Mauro Carvalho Chehab <mchehab+huawei@kernel.org>

media: atomisp: remove table duplication from dfs tables

The way atomisp_dfs_tables.h is defined, it ends by duplicating
all data structs there on both atomisp_v4l2.c and atomisp_cmd.c.

Change the logic in order to place the definitions only on a single
place.

Signed-off-by: Mauro Carvalho Chehab <mchehab+huawei@kernel.org>

media: atomisp: remove ISP version macros from sh_css_legacy.h

This header is really version-independent. So, just get rid
of the macros from it.

Signed-off-by: Mauro Carvalho Chehab <mchehab+huawei@kernel.org>

media: atomisp: make sh_css_sp_init_pipeline() ISP version independent

This function call has two parameters that are used only with
ISP2401, enclosed on some ugly ifdefs. Make the function independent,
passing NULL values for ISP2400.

Signed-off-by: Mauro Carvalho Chehab <mchehab+huawei@kernel.org>

media: atomisp: make sh_css_struct.h independent of ISP version

Use the same struct for both ISP2400 and ISP2401.

Signed-off-by: Mauro Carvalho Chehab <mchehab+huawei@kernel.org>

media: atomisp: sh_css_defs.h: get rid of build time dependencies

There are several #ifdefs checking for ISP version there. Some
of them are just two different ways to represent the same contants,
while 3 parameters are actually different, depending on the ISP
version.

Change the header in a way that it will be compatible with both
versions, and change dependent code to keep running, removing
ifdefs there only when possible.

Signed-off-by: Mauro Carvalho Chehab <mchehab+huawei@kernel.org>

media: atomisp: atomisp_compat_ioctl32.c: be independent of ISP version

There are two ioctls that are only available with ISP2401. Yet,
at the compat level, we don't really need to take care, as
the native ioctl handler will already return an error code if
the ioctl doesn't exist.

So, let's just remove the ifdefs here.

Signed-off-by: Mauro Carvalho Chehab <mchehab+huawei@kernel.org>

media: atomisp: atomisp_compat_css20.c: detect ISP at runtime

Remove ifdefs that check ISP version from the code, switching
to specific ISP-dependent code at runtime.

Signed-off-by: Mauro Carvalho Chehab <mchehab+huawei@kernel.org>

media: atomisp: atomisp_csi2.c: remove useless ifdefs

The ifdefs there are meaningless. Just remove them for good.

Signed-off-by: Mauro Carvalho Chehab <mchehab+huawei@kernel.org>

media: atomisp: atomisp_subdev.c check ISP version on runtime

Remove ISP-version-dependent ifdefs.

Signed-off-by: Mauro Carvalho Chehab <mchehab+huawei@kernel.org>

media: atomisp: atomisp_v4l2.c: set wdt timers according with ISP version

Add a runtime check to use the proper wdt timer init at runtime,
depending on the chipset revision.

For now, we can't get rid of the remaining version checks, as
the rest of the code is not prepared yet to detect the ISP
version on runtime.

Signed-off-by: Mauro Carvalho Chehab <mchehab+huawei@kernel.org>

media: atomisp: atomisp_ioctl.c: get rid of a ISP2400/ISP2401 dependency

Replace #ifdef occurrences there with runtime checks.

Signed-off-by: Mauro Carvalho Chehab <mchehab+huawei@kernel.org>

media: atomisp: pci/atomisp2/*.h remove #ifdef ISP2401

Those ifs can easily be removed without breaking the code.

Signed-off-by: Mauro Carvalho Chehab <mchehab+huawei@kernel.org>

media: atomisp: atomisp_dfs_tables.h: don't depend on ISP version

There's a dependency on this header for the ISP model. While
this sounds really weird (as just one resolution needs it),
as we don't know what's the right value, let's just keep it.

Signed-off-by: Mauro Carvalho Chehab <mchehab+huawei@kernel.org>

media: atomisp: atomisp_cmd.c test ISP version in runtime

The logic there has lots of ifdef dependencies if the hardware
is either ISP2400 or ISP2041.

Replace them by runtime checks.

Signed-off-by: Mauro Carvalho Chehab <mchehab+huawei@kernel.org>

media: atomisp: add a way for the driver to know the chipset version

The atomisp supports two different chipsets: ISP2400 and ISP2401.
Right now, this is controlled by ugly #defines inside the driver.

Add a global bolean to identify the type of hardware. While this
is hacky, it would be a quick way to start removing the ugly
ifdefs.

Signed-off-by: Mauro Carvalho Chehab <mchehab+huawei@kernel.org>

media: atomisp: simplify math_support.h

There are some uneeded defines there. Simplify it, and make
it independent of defines.

Signed-off-by: Mauro Carvalho Chehab <mchehab+huawei@kernel.org>

media: atomisp: remove some dead code

There are several parts of atomisp that are meant to be
built on different environments, tested using ifdefs.

Remove some of them, as this code should build only on
Linux.

Signed-off-by: Mauro Carvalho Chehab <mchehab+huawei@kernel.org>

media: atomisp: do lots of other coding style cleanups

Use some auto-reformat tools to make the atomisp style
a little better. There are still lots of weird things there,
but this will hopefully reduce the number of pure coding
style patches submitted upstream.

Signed-off-by: Mauro Carvalho Chehab <mchehab+huawei@kernel.org>

media: atomisp: fix several coding style issues

Use checkpatch.pl --fix-inplace --strict to solve several
coding style issues, manually reviewing the produced code and
fixing some troubles caused by checkpatch.

Signed-off-by: Mauro Carvalho Chehab <mchehab+huawei@kernel.org>

media: atomisp: fix several typos

Running checkpatch.pl codespell logic found several typos at atomisp
driver.

Fix them using --fix-inline.

Signed-off-by: Mauro Carvalho Chehab <mchehab+huawei@kernel.org>

media: atomisp: select IOSF_MBI dependency

This driver needs IOSF_MBI in order to talk with some PM
registers. Select it at compile time.

Signed-off-by: Mauro Carvalho Chehab <mchehab+huawei@kernel.org>

media: atomisp: allow building the driver again

The atomisp driver builds again. So, remove depends on BROKEN.

Signed-off-by: Mauro Carvalho Chehab <mchehab+huawei@kernel.org>

media: atomisp: fix a broken compat32 code

There's a typo at the compat32 code, with forgot to get the
pointer address, causing the driver to not build.

Not sure why this didn't produce an error back when the
driver got removed.

Signed-off-by: Mauro Carvalho Chehab <mchehab+huawei@kernel.org>

media: atomisp: use new ida API

The old ida API got replaced by a new one, with avoids
locking issues. As the old API was removed, start using the
new one, as defined by changeset b03f8e43c926 ("ida: Remove old API").

Fixes: b03f8e43c926 ("ida: Remove old API")
Signed-off-by: Mauro Carvalho Chehab <mchehab+huawei@kernel.org>

media: atomisp: use cpu_latency_qos_*() instead of pm_qos_update*()

Those functions got renamed. Update them on atomisp driver.

Fixes: 67b06ba01857 ("PM: QoS: Drop PM_QOS_CPU_DMA_LATENCY and rename related functions")
Signed-off-by: Mauro Carvalho Chehab <mchehab+huawei@kernel.org>

media: atomisp: Fix support for time 64 API

The time 64 API patchset changed the ts stamp to u64.

Update this driver accordingly.

Fixes: 15a40b27beb0 ("media: videobuf: use u64 for the timestamp internally")
Signed-off-by: Mauro Carvalho Chehab <mchehab+huawei@kernel.org>

media: atomisp: replace VFL_TYPE_GRABBER by VFL_TYPE_VIDEO

This type was renamed in the past by a more meaningul
name. Change it on atomisp too.

Fixes: 238e4a5baa36 ("media: rename VFL_TYPE_GRABBER to _VIDEO")
Signed-off-by: Mauro Carvalho Chehab <mchehab+huawei@kernel.org>

media: atomisp: totalram_pages is now a function

Fix the usage of totalram_pages, as this is now a function.

Fixes: ca79b0c211af ("mm: convert totalram_pages and totalhigh_pages variables to atomic")
Signed-off-by: Mauro Carvalho Chehab <mchehab+huawei@kernel.org>

media: atomisp: fix usage of access_ok() kAPI

This macro had its first parameter lost. Remove it.

While on it, fix the alignments where this macro is used.

Fixes: 96d4f267e40f ("Remove 'type' argument from access_ok() function")
Signed-off-by: Mauro Carvalho Chehab <mchehab+huawei@kernel.org>

MAINTAINERS: adjust atomisp maintainership

From now on, I'll be maintaining the atomisp driver, and
Sakari will be reviewing it.

Signed-off-by: Sakari Ailus <sakari.ailus@linux.intel.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab+huawei@kernel.org>

Revert "media: staging: atomisp: Remove driver"

There are some interest on having this driver back, and I
can probably dedicate some time to address its issue. So,
let's ressurect it.

For now, the driver causes a recursive error and doesn't
build, so, make it depend on BROKEN.

This reverts commit 51b8dc5163d2ff2bf04019f8bf7e3bd0e75bb654.

Signed-off-by: Mauro Carvalho Chehab <mchehab+huawei@kernel.org>

media: i2c: imx219: Parse and register properties

Parse device properties and register controls for them using the newly
introduced helpers.

Signed-off-by: Jacopo Mondi <jacopo@jmondi.org>
Signed-off-by: Hans Verkuil <hverkuil-cisco@xs4all.nl>
Signed-off-by: Mauro Carvalho Chehab <mchehab+huawei@kernel.org>

media: i2c: ov13858: Parse and register properties

Parse device properties and register controls for them using the newly
introduced helpers.

Signed-off-by: Jacopo Mondi <jacopo@jmondi.org>
Signed-off-by: Hans Verkuil <hverkuil-cisco@xs4all.nl>
Signed-off-by: Mauro Carvalho Chehab <mchehab+huawei@kernel.org>

media: i2c: ov5670: Parse and register properties

Parse device properties and register controls for them using the newly
introduced helpers.

Signed-off-by: Jacopo Mondi <jacopo@jmondi.org>
Signed-off-by: Hans Verkuil <hverkuil-cisco@xs4all.nl>
Signed-off-by: Mauro Carvalho Chehab <mchehab+huawei@kernel.org>

media: v4l2-ctrls: Add helper to register properties

Add an helper function to v4l2-ctrls to register controls associated
with a device property.

Signed-off-by: Jacopo Mondi <jacopo@jmondi.org>
Signed-off-by: Hans Verkuil <hverkuil-cisco@xs4all.nl>
Signed-off-by: Mauro Carvalho Chehab <mchehab+huawei@kernel.org>

media: v4l2-ctrls: Sort includes alphabetically

Before adding a new include directive, sort the existing ones in
alphabetical order.

Signed-off-by: Jacopo Mondi <jacopo@jmondi.org>
Signed-off-by: Hans Verkuil <hverkuil-cisco@xs4all.nl>
Signed-off-by: Mauro Carvalho Chehab <mchehab+huawei@kernel.org>

media: include: v4l2-ctrl: Sort forward declarations

Before adding a new forward declaration to the v4l2-ctrls.h header file,
sort the existing ones alphabetically.

Signed-off-by: Jacopo Mondi <jacopo@jmondi.org>
Signed-off-by: Hans Verkuil <hverkuil-cisco@xs4all.nl>
Signed-off-by: Mauro Carvalho Chehab <mchehab+huawei@kernel.org>

media: v4l2-fwnode: Add helper to parse device properties

Add an helper function to parse common device properties in the same
way as v4l2_fwnode_endpoint_parse() parses common endpoint properties.

Parse the 'rotation' and 'orientation' properties from the firmware
interface.

Signed-off-by: Jacopo Mondi <jacopo@jmondi.org>
Signed-off-by: Hans Verkuil <hverkuil-cisco@xs4all.nl>
Signed-off-by: Mauro Carvalho Chehab <mchehab+huawei@kernel.org>

media: v4l2-ctrls: Add camera orientation and rotation

Add support for the newly defined V4L2_CID_CAMERA_ORIENTATION
and V4L2_CID_CAMERA_SENSOR_ROTATION read-only controls used to report
the camera device mounting position and orientation respectively.

Reviewed-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
Signed-off-by: Jacopo Mondi <jacopo@jmondi.org>
Signed-off-by: Hans Verkuil <hverkuil-cisco@xs4all.nl>
Signed-off-by: Mauro Carvalho Chehab <mchehab+huawei@kernel.org>

media: v4l2-ctrl: Document V4L2_CID_CAMERA_SENSOR_ROTATION

Add documentation for the V4L2_CID_CAMERA_SENSOR_ROTATION camera
control. The newly added read-only control reports the rotation
correction to be applied to images before displaying them to the user.

Signed-off-by: Jacopo Mondi <jacopo@jmondi.org>
Signed-off-by: Hans Verkuil <hverkuil-cisco@xs4all.nl>
Signed-off-by: Mauro Carvalho Chehab <mchehab+huawei@kernel.org>

media: v4l2-ctrl: Document V4L2_CID_CAMERA_ORIENTATION

Add documentation for the V4L2_CID_CAMERA_ORIENTATION camera
control. The newly added read-only control reports the camera device
orientation relative to the usage orientation of the system the camera
is installed on.

Signed-off-by: Jacopo Mondi <jacopo@jmondi.org>
Signed-off-by: Hans Verkuil <hverkuil-cisco@xs4all.nl>
Signed-off-by: Mauro Carvalho Chehab <mchehab+huawei@kernel.org>

media: dt-bindings: video-interface: Replace 'rotation' description

Replace the 'rotation' property description by providing a definition
relative to the camera sensor pixel array coordinate system and the
captured scene.

Acked-by: Rob Herring <robh@kernel.org>
Signed-off-by: Jacopo Mondi <jacopo@jmondi.org>
Signed-off-by: Hans Verkuil <hverkuil-cisco@xs4all.nl>
Signed-off-by: Mauro Carvalho Chehab <mchehab+huawei@kernel.org>

media: dt-bindings: video-interfaces: Document 'orientation' property

Add the 'orientation' device property, used to specify the device mounting
position. The property is particularly meaningful for mobile devices
with a well defined usage orientation.

Reviewed-by: Rob Herring <robh@kernel.org>
Acked-by: Tomasz Figa <tfiga@chromium.org>
Signed-off-by: Jacopo Mondi <jacopo@jmondi.org>
Signed-off-by: Hans Verkuil <hverkuil-cisco@xs4all.nl>
Signed-off-by: Mauro Carvalho Chehab <mchehab+huawei@kernel.org>

media: imx: TODO: Remove media link creation todos

Remove the TODO items regarding media link creation, these issues are
resolved by moving media link creation to individual entity bound
callbacks and the implementation of the get_fwnode_pad operation.

Signed-off-by: Steve Longerbeam <slongerbeam@gmail.com>
Signed-off-by: Sakari Ailus <sakari.ailus@linux.intel.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab+huawei@kernel.org>

media: imx: silence a couple debug messages

Convert to dev_dbg the "subdev bound" and IPU-internal media-link
creation messages.

Signed-off-by: Steve Longerbeam <slongerbeam@gmail.com>
Reviewed-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
Signed-off-by: Sakari Ailus <sakari.ailus@linux.intel.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab+huawei@kernel.org>

media: imx: Create missing links from CSI-2 receiver

The entities external to the i.MX6 IPU and i.MX7 now create the links
to their fwnode-endpoint connected entities in their notifier bound
callbacks. Which means imx_media_create_of_links() and
imx_media_create_csi_of_links() are no longer needed and are removed.

However there is still one case in which imx-media needs to create
fwnode-endpoint based links at probe completion. The v4l2-async framework
does not allow multiple subdevice notifiers to contain a duplicate
subdevice in their asd_list. Only the first subdev notifier that discovers
and adds that one subdevice to its asd_list will receive a bound callback
for it. Other subdevices that also have firmware endpoint connections to
this duplicate subdevice will not have it in their asd_list, and thus will
never receive a bound callback for it. In the case of imx-media, the one
duplicate subdevice in question is the i.MX6 MIPI CSI-2 receiver.

Until there is a solution to that problem, rewrite imx_media_create_links()
to add the missing links from the CSI-2 receiver to the CSIs and CSI muxes.
The function is renamed imx_media_create_csi2_links().

Signed-off-by: Steve Longerbeam <slongerbeam@gmail.com>
Reviewed-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
Signed-off-by: Sakari Ailus <sakari.ailus@linux.intel.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab+huawei@kernel.org>

media: imx: csi: Lookup upstream endpoint with imx_media_get_pad_fwnode

Fix the 1:1 port-id:pad-index assumption for the upstream subdevice, by
searching the upstream subdevice's endpoints for one that maps to the
pad's index. This is carried out by a new reverse mapping function
imx_media_get_pad_fwnode().

Signed-off-by: Steve Longerbeam <slongerbeam@gmail.com>
Signed-off-by: Sakari Ailus <sakari.ailus@linux.intel.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab+huawei@kernel.org>

media: imx5/6/7: csi: Mark a bound video mux as a CSI mux

For i.MX5/6, if the bound subdev is a video mux, it must be one of the
CSI muxes, and for i.MX7, the bound subdev must always be a CSI mux.

So if the bound subdev is a video mux, mark it as a CSI mux with a new
group id IMX_MEDIA_GRP_ID_CSI_MUX.

In the process use the new group id in csi_get_upstream_endpoint(), and
do some cleanup in that function for better readability.

Suggested-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
Signed-off-by: Steve Longerbeam <slongerbeam@gmail.com>
Acked-by: Rui Miguel Silva <rmfrfs@gmail.com>
Signed-off-by: Sakari Ailus <sakari.ailus@linux.intel.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab+huawei@kernel.org>

media: imx7: csi: Remove imx7_csi_get_upstream_endpoint()

The function imx7_csi_get_upstream_endpoint() is not necessary for
imx7. First, the imx7 CSI only receives from the CSI mux, so much of
the code in there is pointless. Second, it is only used to determine
whether the CSI mux has selected the CSI-2 input or the parallel input.
This can be accomplished much more simply by getting the function type
of selected input entity to the CSI mux.

Signed-off-by: Steve Longerbeam <slongerbeam@gmail.com>
Acked-by: Rui Miguel Silva <rmfrfs@gmail.com>
Signed-off-by: Sakari Ailus <sakari.ailus@linux.intel.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab+huawei@kernel.org>

media: imx: csi: Create media links in bound notifier

Implement a notifier bound op to register media links from the remote
sub-device's source pad(s) to the CSI sink pad.

Signed-off-by: Steve Longerbeam <slongerbeam@gmail.com>
Signed-off-by: Sakari Ailus <sakari.ailus@linux.intel.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab+huawei@kernel.org>

media: imx7: csi: Create media links in bound notifier

Implement a notifier bound op to register media links from the remote
sub-device's source pad(s) to the CSI sink pad.

Signed-off-by: Steve Longerbeam <slongerbeam@gmail.com>
Reviewed-by: Rui Miguel Silva <rmfrfs@gmail.com>
Signed-off-by: Sakari Ailus <sakari.ailus@linux.intel.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab+huawei@kernel.org>

media: imx7: mipi csis: Create media links in bound notifier

Implement a notifier bound op to register media links from the remote
sub-device's source pad(s) to the mipi csi-2 receiver sink pad.

Signed-off-by: Steve Longerbeam <slongerbeam@gmail.com>
Acked-by: Rui Miguel Silva <rmfrfs@gmail.com>
Signed-off-by: Sakari Ailus <sakari.ailus@linux.intel.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab+huawei@kernel.org>

media: imx: mipi csi-2: Create media links in bound notifier

Implement a notifier bound op to register media links from the remote
sub-device's source pad(s) to the mipi csi-2 receiver sink pad.

Signed-off-by: Steve Longerbeam <slongerbeam@gmail.com>
Signed-off-by: Sakari Ailus <sakari.ailus@linux.intel.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab+huawei@kernel.org>

media: video-mux: Create media links in bound notifier

Implement a notifier bound op to register media links from the remote
sub-device's source pad(s) to the video-mux sink pad(s).

Signed-off-by: Steve Longerbeam <slongerbeam@gmail.com>
Signed-off-by: Sakari Ailus <sakari.ailus@linux.intel.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab+huawei@kernel.org>

media: imx: imx7-media-csi: Implement get_fwnode_pad op

Use v4l2_subdev_get_fwnode_pad_1_to_1() as the get_fwnode_pad operation.
The i.MX7 CSI maps port numbers and pad indexes 1:1.

Acked-by: Rui Miguel Silva <rmfrfs@gmail.com>
Signed-off-by: Steve Longerbeam <slongerbeam@gmail.com>
Signed-off-by: Sakari Ailus <sakari.ailus@linux.intel.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab+huawei@kernel.org>

media: imx: imx7-mipi-csis: Implement get_fwnode_pad op

Use v4l2_subdev_get_fwnode_pad_1_to_1() as the get_fwnode_pad operation.
The imx7-mipi-csis maps port numbers and pad indexes 1:1.

Signed-off-by: Steve Longerbeam <slongerbeam@gmail.com>
Acked-by: Rui Miguel Silva <rmfrfs@gmail.com>
Signed-off-by: Sakari Ailus <sakari.ailus@linux.intel.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab+huawei@kernel.org>

media: imx: mipi csi-2: Implement get_fwnode_pad op

Use v4l2_subdev_get_fwnode_pad_1_to_1() as the get_fwnode_pad operation.
The MIPI CSI-2 receiver maps port numbers and pad indexes 1:1.

Signed-off-by: Steve Longerbeam <slongerbeam@gmail.com>
Signed-off-by: Sakari Ailus <sakari.ailus@linux.intel.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab+huawei@kernel.org>

media: video-mux: Implement get_fwnode_pad op

Use v4l2_subdev_get_fwnode_pad_1_to_1() as the get_fwnode_pad operation.
The video mux maps fwnode port numbers and pad indexes 1:1.

Signed-off-by: Steve Longerbeam <slongerbeam@gmail.com>
Signed-off-by: Sakari Ailus <sakari.ailus@linux.intel.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab+huawei@kernel.org>

media: imx: csi: Implement get_fwnode_pad op

The CSI does not have a 1:1 relationship between fwnode port numbers and
pad indexes. In fact the CSI fwnode device is itself a port which is the
sink, containing only a single fwnode endpoint. Implement media_entity
operation get_fwnode_pad to first verify the given endpoint is the CSI's
sink endpoint, and if so return the CSI sink pad index.

Signed-off-by: Steve Longerbeam <slongerbeam@gmail.com>
Reviewed-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
Signed-off-by: Sakari Ailus <sakari.ailus@linux.intel.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab+huawei@kernel.org>

media: Revert "media: v4l2-fwnode: Add a convenience function for registering subdevs with notifiers"

The users of v4l2_async_register_fwnode_subdev() have switched to
parsing their endpoints and setting up async sub-device lists in their
notifiers locally, without using the endpoint parsing callbacks. There
are no more users of v4l2_async_register_fwnode_subdev() so this
convenience function can be removed.

This reverts commit 1634f0eded87d1f150e823fa56cd782ea0775eb2.

Signed-off-by: Steve Longerbeam <slongerbeam@gmail.com>
Signed-off-by: Sakari Ailus <sakari.ailus@linux.intel.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab+huawei@kernel.org>

media: imx: Parse information from firmware without using callbacks

Instead of using the convenience functions
v4l2_async_notifier_parse_fwnode_endpoints*() or
v4l2_async_register_fwnode_subdev(), parse the input endpoints
and set up the async sub-devices without using callbacks. The drivers
know which ports it must parse and how to handle unconnected remotes,
so it makes the code simpler to transfer control of endpoint parsing
to the driver.

Signed-off-by: Steve Longerbeam <slongerbeam@gmail.com>
Signed-off-by: Sakari Ailus <sakari.ailus@linux.intel.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab+huawei@kernel.org>

media: video-mux: Parse information from firmware without using callbacks

Instead of using the convenience function
v4l2_async_register_fwnode_subdev(), parse the video-mux input endpoints
and set up the async sub-devices without using callbacks. The video-mux
knows which ports it must parse (the input ports) and how to handle
unconnected remotes, so it makes the code simpler to transfer control
of endpoint parsing to the driver.

Signed-off-by: Steve Longerbeam <slongerbeam@gmail.com>
Signed-off-by: Sakari Ailus <sakari.ailus@linux.intel.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab+huawei@kernel.org>

media: v4l2-mc: add v4l2_create_fwnode_links helpers

Add functions to create media links between source and sink subdevices,
based on the fwnode endpoint connections between them:

v4l2_create_fwnode_links_to_pad() - create links from a source subdev to
                                    a single sink pad based on fwnode
                                    endpoint connections.

v4l2_create_fwnode_links() - create all links from a source to sink subdev
                             based on fwnode endpoint connections.

These functions can be used in a sink's v4l2-async notifier subdev
bound callback to make the links from the bound subdev.

Signed-off-by: Steve Longerbeam <slongerbeam@gmail.com>
Signed-off-by: Sakari Ailus <sakari.ailus@linux.intel.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab+huawei@kernel.org>

media: v4l2-subdev: add v4l2_subdev_get_fwnode_pad_1_to_1

Add a convenience function that can be used as the .get_fwnode_pad
operation for subdevices that map port numbers and pad indexes 1:1.
The function verifies the endpoint is owned by the subdevice, and if
so returns the endpoint port number.

Signed-off-by: Steve Longerbeam <slongerbeam@gmail.com>
Signed-off-by: Sakari Ailus <sakari.ailus@linux.intel.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab+huawei@kernel.org>

media: entity: Pass entity to get_fwnode_pad operation

Add a missing pointer to the entity in the media_entity operation
get_fwnode_pad. There are no implementers of this op yet, but a future
entity that does so will almost certainly need a reference to itself
to carry out the work.

operation")

Fixes: ae45cd5efc120 ("[media] media: entity: Add get_fwnode_pad entity
Signed-off-by: Steve Longerbeam <slongerbeam@gmail.com>
Reviewed-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
Signed-off-by: Sakari Ailus <sakari.ailus@linux.intel.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab+huawei@kernel.org>

media: i2c: imx219: Fix a bug in imx219_enum_frame_size

When enumerating the frame sizes, the value sent to
imx219_get_format_code should be fse->code
(the code from the ioctl) and not imx219->fmt.code
which is the code set currently in the driver.

Fixes: 22da1d56e982 ("media: i2c: imx219: Add support for RAW8 bit bayer format")
Signed-off-by: Dafna Hirschfeld <dafna.hirschfeld@collabora.com>
Reviewed-by: Helen Koike <helen.koike@collabora.com>
Reviewed-by: Dave Stevenson <dave.stevenson@raspberrypi.com>
Reviewed-by: Lad Prabhakar <prabhakar.mahadev-lad.rj@bp.renesas.com>
Signed-off-by: Sakari Ailus <sakari.ailus@linux.intel.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab+huawei@kernel.org>

media: i2c: imx219: Implement get_selection

Implement the get_selection pad operation for the IMX219 sensor driver.
The supported targets report the sensor's native size, the crop default
rectangle and the crop rectangle.

Reviewed-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
Signed-off-by: Jacopo Mondi <jacopo@jmondi.org>
Signed-off-by: Sakari Ailus <sakari.ailus@linux.intel.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab+huawei@kernel.org>

media: media: sh_veu: Remove driver

Since its inclusion in v3.9, no users of the SuperH VEU mem2mem video
processing driver have appeared upstream.  All VEU devices in SuperH
board code still bind to the "uio_pdrv_genirq" driver instead.
The original author marked the driver orphaned in v3.15.

Remove the driver; it can always be resurrected from git history when
needed.

Signed-off-by: Geert Uytterhoeven <geert+renesas@glider.be>
Acked-by: Rob Landley <rob@landley.net>
Acked-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab+huawei@kernel.org>

media: dvb-frontends: remove redundant initialization of variable status

The variable status is being initialized with a value that is never read
and it is being updated later with a new value.  The initialization is
redundant and can be removed.

Addresses-Coverity: ("Unused value")

Signed-off-by: Colin Ian King <colin.king@canonical.com>
Signed-off-by: Sean Young <sean@mess.org>
Signed-off-by: Mauro Carvalho Chehab <mchehab+huawei@kernel.org>

media: mantis_dvb: remove redundant initialization to variable result

The variable result is being initialized with a value that is never read
and it is being updated later with a new value.  The initialization is
redundant and can be removed.

Addresses-Coverity: ("Unused value")

Signed-off-by: Colin Ian King <colin.king@canonical.com>
Signed-off-by: Sean Young <sean@mess.org>
Signed-off-by: Mauro Carvalho Chehab <mchehab+huawei@kernel.org>

media: usb: ttusb-dec: reduce the number of memory reads in ttusb_dec_handle_irq()

In ttusb_dec_handle_irq(), buffer[4] is continuously read from memory
three times, without being modified.
To reduce the number of memory reads, buffer[4] is first assigned to a
local variable index, and then index is used to replace buffer[4].

Signed-off-by: Jia-Ju Bai <baijiaju1990@gmail.com>
Reviewed-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Signed-off-by: Sean Young <sean@mess.org>
Signed-off-by: Mauro Carvalho Chehab <mchehab+huawei@kernel.org>

media: stv0900_core: remove redundant assignment to variable val

The variable val is being initializeed with a value that is never read
and it is being updated later with a new value. The initialization
is redundant and can be removed.

Addresses-Coverity: ("Unused value")

Signed-off-by: Colin Ian King <colin.king@canonical.com>
Signed-off-by: Sean Young <sean@mess.org>
Signed-off-by: Mauro Carvalho Chehab <mchehab+huawei@kernel.org>

media: dvb: remove redundant assignment to variable bw

The variable bw is being initialized with a value that is
never read and it is being updated later with a new value.  The
initialization is redundant and can be removed.

Addresses-Coverity: ("Unused value")

Signed-off-by: Colin Ian King <colin.king@canonical.com>
Signed-off-by: Sean Young <sean@mess.org>
Signed-off-by: Mauro Carvalho Chehab <mchehab+huawei@kernel.org>

media: gpio-ir-tx: allow transmission without carrier

Some IR protocols do not use a carrier.

Signed-off-by: Sean Young <sean@mess.org>
Signed-off-by: Mauro Carvalho Chehab <mchehab+huawei@kernel.org>

media: gpio-ir-tx: improve precision of transmitted signal due to scheduling

usleep_range() may take longer than the max argument due to scheduling,
especially under load. This is causing random errors in the transmitted
IR. Remove the usleep_range() in favour of busy-looping with udelay().

Signed-off-by: Sean Young <sean@mess.org>
Signed-off-by: Mauro Carvalho Chehab <mchehab+huawei@kernel.org>

media: v4l: document VIDIOC_SUBDEV_QUERYCAP

Add documentation for the new VIDIOC_SUBDEV_QUERYCAP ioctl.

Acked-by: Sakari Ailus <sakari.ailus@linux.intel.com>
Signed-off-by: Hans Verkuil <hans.verkuil@cisco.com>
Signed-off-by: Jacopo Mondi <jacopo@jmondi.org>
Signed-off-by: Mauro Carvalho Chehab <mchehab+huawei@kernel.org>

media: v4l2-subdev: add VIDIOC_SUBDEV_QUERYCAP ioctl

While normal video/radio/vbi/swradio nodes have a proper QUERYCAP ioctl
that apps can call to determine that it is indeed a V4L2 device, there
is currently no equivalent for v4l-subdev nodes. Adding this ioctl will
solve that, and it will allow utilities like v4l2-compliance to be used
with these devices as well.

SUBDEV_QUERYCAP currently returns the version and capabilities of the
subdevice. Define a capability flag to report if the subdevice is
registered in read-only mode.

Signed-off-by: Hans Verkuil <hans.verkuil@cisco.com>
Signed-off-by: Jacopo Mondi <jacopo@jmondi.org>
Signed-off-by: Mauro Carvalho Chehab <mchehab+huawei@kernel.org>

media: v4l2-subdev: Guard whole fops and ioctl hdlr

A sub-device device node can be registered in user space only if the
CONFIG_VIDEO_V4L2_SUBDEV_API Kconfig option is selected. Currently the
open/close file operations and the ioctl handler have some parts of
their implementations guarded by #if
defined(CONFIG_VIDEO_V4L2_SUBDEV_API), while they are actually not
accessible without a video device node registered to user space.

Guard the whole open, close and ioctl handler and provide stubs if the
VIDEO_V4L2_SUBDEV_API Kconfig option is not selected.

This slightly reduces the kernel size when the option is not selected
and simplifies the file ops and ioctl implementations.

Signed-off-by: Jacopo Mondi <jacopo@jmondi.org>
Signed-off-by: Hans Verkuil <hverkuil-cisco@xs4all.nl>
Signed-off-by: Mauro Carvalho Chehab <mchehab+huawei@kernel.org>

media: v4l2-dev: Add v4l2_device_register_ro_subdev_node()

Add to the V4L2 core a function to register device nodes for video
subdevices in read-only mode.

Registering a device node in read-only mode is useful to expose to
userspace the current sub-device configuration, without allowing
application to change it by using the V4L2 subdevice ioctls.

Acked-by: Sakari Ailus <sakari.ailus@linux.intel.com>
Signed-off-by: Jacopo Mondi <jacopo@jmondi.org>
Signed-off-by: Hans Verkuil <hverkuil-cisco@xs4all.nl>
Signed-off-by: Mauro Carvalho Chehab <mchehab+huawei@kernel.org>

media: Documentation: media: Document read-only subdevice

Document a new kAPI function to register subdev device nodes in read only
mode and for each affected ioctl report how access is restricted.

Acked-by: Sakari Ailus <sakari.ailus@linux.intel.com>
Signed-off-by: Jacopo Mondi <jacopo@jmondi.org>
Signed-off-by: Hans Verkuil <hverkuil-cisco@xs4all.nl>
Signed-off-by: Mauro Carvalho Chehab <mchehab+huawei@kernel.org>

media: Documentation: media: Update sub-device API intro

Update the V4L2 sub-device userspace API introduction to provide more
details on why complex devices might want to register devnodes for the
connected subdevices.

Acked-by: Sakari Ailus <sakari.ailus@linux.intel.com>
Suggested-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
Signed-off-by: Jacopo Mondi <jacopo@jmondi.org>
Signed-off-by: Hans Verkuil <hverkuil-cisco@xs4all.nl>
Signed-off-by: Mauro Carvalho Chehab <mchehab+huawei@kernel.org>

media: ipu3.rst: fix a build warning

Sphinx 2.4.4 produces this warning:

Documentation/admin-guide/media/ipu3.rst:235: WARNING: Title underline too short.

Acked-by: Sakari Ailus <sakari.ailus@linux.intel.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab+huawei@kernel.org>

media: vidioc-enum-fmt.rst: make the ENUM_FMT text clearer

Rework the documentation to make it easier for the reader to understand
the differences in behavior of this ioctl between MC and non-MC drivers.

Note the addition of the 'video-node-centric' and 'MC-centric' terms to
help understand what the IO_MC capability really means.

Also mention in the beginning that mbus_code is one of the fields that
application should initialize, and add META_OUTPUT as one of the types that
this ioctl supports (that was never added here when the META_OUTPUT buffer
type was added).

Finally document that EINVAL will be returned if mbus_code is unsupported.

Fixes: e5b6b07a1b45 ("media: v4l2: Extend VIDIOC_ENUM_FMT to support MC-centric devices")
Signed-off-by: Hans Verkuil <hverkuil-cisco@xs4all.nl>
Signed-off-by: Mauro Carvalho Chehab <mchehab+huawei@kernel.org>

media: vimc: Make use of V4L2_CAP_IO_MC

Set the V4L2_CAP_IO_MC capability flag to report this vimc
inputs/outputs are controlled by the media graph.

Signed-off-by: Niklas Söderlund <niklas.soderlund+renesas@ragnatech.se>
Signed-off-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
Acked-by: Sakari Ailus <sakari.ailus@linux.intel.com>
Signed-off-by: Hans Verkuil <hverkuil-cisco@xs4all.nl>
Signed-off-by: Mauro Carvalho Chehab <mchehab+huawei@kernel.org>

media: staging/intel-ipu3: Make use of V4L2_CAP_IO_MC

Set the V4L2_CAP_IO_MC capability flag and remove the driver specific
vidioc_enum_{input,output}, vidioc_g_{input,output} and
vidioc_s_{input,output} callbacks.

Signed-off-by: Niklas Söderlund <niklas.soderlund+renesas@ragnatech.se>
Acked-by: Sakari Ailus <sakari.ailus@linux.intel.com>
Signed-off-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
Signed-off-by: Hans Verkuil <hverkuil-cisco@xs4all.nl>
Signed-off-by: Mauro Carvalho Chehab <mchehab+huawei@kernel.org>