Adds a driver for the 12MPix Sony IMX477 CSI2 sensor.
Whilst the sensor supports 2 or 4 CSI2 data lanes, this driver
currently only supports 2 lanes.

The following Bayer modes are currently available:

4056x3040 12-bit @ 10fps
2028x1520 12-bit (binned) @ 40fps
2028x1050 12-bit (cropped/binned) @ 50fps
1012x760 10-bit (scaled) @ 120 fps

Signed-off-by: Naushir Patuck <naush@raspberrypi.com>

Add an overlay for the Sony IMX477 CMOS sensor device.
Also update overlay README and Makefile.

Signed-off-by: Naushir Patuck <naush@raspberrypi.com>

Add YAML device tree binding for IMX477 CMOS image sensor.

Signed-off-by: Naushir Patuck <naush@raspberrypi.com>

Add the command line options required to enable audio over discrete
ALSA devices.

Signed-off-by: Phil Elwell <phil@raspberrypi.com>

Apart from some special cases, device objects are only created for
nodes if they are children of a bus or the root node. "fixed-clock"
is one of the exceptions that will be instantiated wherever it is
found, but only during kernel initialisation - ruling out loading the
overlay at runtime.

Move most of the affected clocks to be children of the root, only
leaving those in overlays that could be multiply instantiated, to avoid
a potential name clash.

See: https://github.com/raspberrypi/linux/issues/3602



Signed-off-by: Phil Elwell <phil@raspberrypi.com>

The tc358743 overlay was written using a workaround to a problem with
fragments that target other fragments, but this had the unfortunate
side-effect of preventing the overlay from being applied at runtime
(the kernel doesn't allow nodes to be overwritten by an overlay, only
properties).

The current firmware and dtoverlay/dtparam utilities include support
for these "intra-overlay" fragments, so remove the workaround and do
it properly.

Signed-off-by: Phil Elwell <phil@raspberrypi.com>

Signed-off-by: Dom Cobley <popcornmix@gmail.com>

Signed-off-by: Dom Cobley <popcornmix@gmail.com>

2711 uses a fixed 27MHz input, earlier models use the HSM clock

Signed-off-by: Dom Cobley <popcornmix@gmail.com>

Signed-off-by: Dom Cobley <popcornmix@gmail.com>

Signed-off-by: Dom Cobley <popcornmix@gmail.com>

Signed-off-by: Dom Cobley <popcornmix@gmail.com>

Fix an incorrect register address, add a
missing one and reorder into address order

Signed-off-by: Dom Cobley <popcornmix@gmail.com>

Signed-off-by: Dom Cobley <popcornmix@gmail.com>

The other sc16is75x overlays have an xtal parameter to allow a
different crystal frequency to be specified, but sc16is752-spi1
doesn't. Fix this omission.

See: https://www.raspberrypi.org/forums/viewtopic.php?f=107&t=273234



Signed-off-by: Phil Elwell <phil@raspberrypi.com>

If the firmware hasn't detected a display, the driver would assume
one display was available, but because it had failed to retrieve the
display size it would try to allocate a zero-sized buffer.

Avoid the allocation failure by bailing out early if no display is
found.

See: https://github.com/raspberrypi/linux/issues/3598



Signed-off-by: Phil Elwell <phil@raspberrypi.com>

Signed-off-by: Jacko Dirks <jdirks.linuxdev@gmail.com>

Signed-off-by: Jacko Dirks <jdirks.linuxdev@gmail.com>

The firmware and runtime overlay support has recently been updated to
correctly process fragments that target other fragments within the
overlay. Make use of that ability and avoid the use of the awkward
target-path = "<alias>/..." workaround and for better readability.

Signed-off-by: Phil Elwell <phil@raspberrypi.com>

This is stored in a 6-bit register field which causes a WARN

Signed-off-by: popcornmix <popcornmix@gmail.com>

The 32- and 64-bit bcm2711 defconfigs are missing support for the
official Raspberry Pi touchscreen.

Restore the missing config settings.

See: https://github.com/Hexxeh/rpi-firmware/issues/223



Signed-off-by: Phil Elwell <phil@raspberrypi.com>

The arm64 bcm2711_defconfig was inexplicably missing three PPS config
options. Add them, along with another missing option from
bcmrpi3_defconfig.

See: https://github.com/raspberrypi/linux/issues/3593



Signed-off-by: Phil Elwell <phil@raspberrypi.com>

The i2c-gpio driver expects to use a GPIO in open-drain mode. Failure
to configure it in that way causes alarming warnings in the kernel log.
The BCM283x and BCM2711 GPIO blocks don't support open-drain mode,
but i2c-gpio works anyway. Silence the warning by declaring that
open-drain mode has been enabled by other means.

See: https://github.com/raspberrypi/firmware/issues/1381



Signed-off-by: Phil Elwell <phil@raspberrypi.com>

The array of potential formats and their configuration should be const.
Rework all accesses so that this is possible.

The list of supported formats was taking a copy of entries from this table.
This is unnecessary, therefore allocate an array of pointers instead of
an array of entries.

Signed-off-by: Dave Stevenson <dave.stevenson@raspberrypi.com>

With the codec code from which this was derived, the driver had to
get the supported formats for both input and output ports.
This had been copied across, however here we have independent nodes
for each port, but the code had been left in to do the same thing
twice.
Remove the duplicate.

Signed-off-by: Dave Stevenson <dave.stevenson@raspberrypi.com>

This is used to enumerate available frame sizes on all nodes
apart from statistics output.

Signed-off-by: Naushir Patuck <naush@raspberrypi.com>

The reference counting of node->open was only incremented after
a check that the node was v4l2_fh_is_singular_file, which resulted
in the counting going wrong and s_power not being called at an
appropriate time.

Signed-off-by: Dave Stevenson <dave.stevenson@raspberrypi.com>

unicam_release calls _vb2_fop_release, which will call stop_streaming
if that particular node was streaming. Calling it unconditionally (as
the code was) means that if a second handle was opened eg to alter
a setting, on closing that connection it also stopped Unicam.

Signed-off-by: Dave Stevenson <dave.stevenson@raspberrypi.com>

Sensors are now reflecting cropping and scaling parameters through
the selection API, therefore Unicam needs to forward the requests
through to the subdev.

Signed-off-by: Dave Stevenson <dave.stevenson@raspberrypi.com>

Exposure is clipped by the VTS of the mode, so needs to be updated as
and when this is changed.

Signed-off-by: Dave Stevenson <dave.stevenson@raspberrypi.com>

To make adding new members to the mode structures easier, use
the member names in the initialisers.

Signed-off-by: Dave Stevenson <dave.stevenson@raspberrypi.com>

The controls for analogue gain and exposure were defined with
V4L2_CTRL_FLAG_EXECUTE_ON_WRITE. This is not required as we only need
to send changes to the sensor.

Signed-off-by: Dave Stevenson <dave.stevenson@raspberrypi.com>

Adds vblank control to allow for frame rate control.

Signed-off-by: Dave Stevenson <dave.stevenson@raspberrypi.com>

The ov5647 subdev can generate control events, therefore set
the V4L2_SUBDEV_FL_HAS_EVENTS flag.

Signed-off-by: Dave Stevenson <dave.stevenson@raspberrypi.com>

Clients need to know the pixel rate in order to compute exposure
and frame rate values.
Advertise it.

Signed-off-by: Dave Stevenson <dave.stevenson@raspberrypi.com>

"87f3ab94 media: ov5647: Add basic support for multiple sensor modes."
added a return path ov5647_set_fmt that didn't release the device
mutex that it had claimed.
Release the mutex.

Signed-off-by: Dave Stevenson <dave.stevenson@raspberrypi.com>

In order to apply lens shading correctly the client needs to know how
each mode crops or scales the image compared to the full sensor array.
Implement this (based on the imx219 equivalent).

Signed-off-by: Dave Stevenson <dave.stevenson@raspberrypi.com>

Specifically:

* AWB is now off by default.

* AEC/AGC is also off by default.

* The default mode is changed to the 10-bit 2x2 binned mode.

AWB and AEC/AGC can be re-enabled using the usual V4L2 controls. The
original 8-bit mode will be respected if an application requests the
8-bit format.

Signed-off-by: David Plowman <david.plowman@raspberrypi.com>
Signed-off-by: Naushir Patuck <naush@raspberrypi.com>

The 8-bit VGA mode remains, we add the following 10-bit modes:

Mode 0: 2592x1944 full resolution.

Mode 1: 1920x1080 full resolution, but centre-cropped.
(This mode achieves 30fps, mode 0 does not.)

Mode 2: 1296x972 full field-of-view 2x2 binned mode.

Mode 3: VGA full field of view mode.

Signed-off-by: David Plowman <david.plowman@raspberrypi.com>
Signed-off-by: Naushir Patuck <naush@raspberrypi.com>

Added basic v4l2_ctrl_handler infrastructure (there was none
previously).

Added controls to let AWB/AEC/AGC run in the sensor's auto mode or
manually. Also controls to set exposure (in lines) and analogue gain
(as a register code) from user code.

Also delete registers (just the one) from the VGA mode register set
that are now controlled by the new V4L2 controls.

Signed-off-by: David Plowman <david.plowman@raspberrypi.com>
Signed-off-by: Naushir Patuck <naush@raspberrypi.com>