commit ec757001

 upstream.

This makes gpiod_get_from_of_node() respect the
GPIOD_FLAGS_BIT_NONEXCLUSIVE flag which is especially
nice when getting regulator GPIOs right out of device
tree nodes.

Suggested-by: Marek Szyprowski <m.szyprowski@samsung.com>
Fixes: b0ce7b29

 ("regulator/gpio: Allow nonexclusive GPIO access")
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
Reviewed-by: Marek Szyprowski <m.szyprowski@samsung.com>
Tested-by: Marek Szyprowski <m.szyprowski@samsung.com>
Reviewed-by: Charles Keepax <ckeepax@opensource.cirrus.com>
Signed-off-by: Mark Brown <broonie@kernel.org>

My forward-port of the arm64 pcie bounce buffer support broke builds
with IOMMU support enabled.

Fixes: 53f58fe7

 ("Ported pcie-brcmstb bounce buffer implementation to ARM64. (#3144)")

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

The g_selection and s_selection API is messed up and requires
the driver to expect the non-MPLANE buffer types, not the MPLANE
ones even if they are supported. The V4L2 core will convert the
MPLANE ones to non-MPLANE should they be passed in

Fixes: 5e484a3e

 staging: bcm2835-codec: switch to multi-planar API
Signed-off-by: Dave Stevenson <dave.stevenson@raspberrypi.org>

The codec is happy with video up to 1920 high if the width
is suitably reduced to stay within level limits. eg 1080x1920
is OK to decode.

Increase the height limit accordingly.

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

Adds the driver for the Hifiberry DAC+DSP. It supports capture and
playback depending on the DSP firmware.

Signed-off-by: Joerg Schambacher <joerg@i2audio.com>

Margins were incorrectly assumed to be setup in SDTV mode, but were
not actually done, so this make the setup non-conditional on mode.

Signed-off-by: James Hughes <james.hughes@raspberrypi.org>

Without this change, V3D ends up using (and rapidly running out of)
bounce buffers.

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

This one got missed.

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

See: https://github.com/raspberrypi/linux/issues/3182



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

This is mainly used for the NoIR camera which has no IR
filter and can completely confuse normal AWB presets.

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

Adds a simple greyworld white balance preset, mainly for use
with cameras without an IR filter (eg Raspberry Pi NoIR)

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

The interrupt GPIO is optional to the driver, therefore add an
option to not configure it.

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

In order to allow the overlay to be loaded multiple times the
GPIO node for the interrupt line needs to be unique.
Rename it based on the MCP23017 I2C address

https://github.com/raspberrypi/linux/issues/3207



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

This prevents DMA leaks.

Signed-off-by: Yaroslav Rosomakho <yaroslavros@gmail.com>

Limit max_req_size under arm64 (or any other platform that uses swiotlb) to prevent potential buffer overflow due to bouncing.

Signed-off-by: Yaroslav Rosomakho <yaroslavros@gmail.com>

Add a media controller device node to represent the Unicam device.
The attached sensor will be automatically added to the media graph by
V4L2 core.

Signed-off-by: Kieran Bingham <kieran.bingham@ideasonboard.com>

unicam_start_rx() is not used outside of the unicam module.  Its current
definition produces a compiler warning, that no function prototype
exists.

As the function is only used within the local scope of the module,
convert it to a static function.

Signed-off-by: Kieran Bingham <kieran.bingham@ideasonboard.com>

Provide a single media device to contain all of the bcm2835_codec
devices created.

Signed-off-by: Kieran Bingham <kieran.bingham@ideasonboard.com>

Pass the bcm2835_codec_driver driver context directly into the
bcm2835_codec_create() so that it can be used to store driver global
state. Pass the struct platform_device *pdev by adding it to the driver
global state.

Signed-off-by: Kieran Bingham <kieran.bingham@ideasonboard.com>

Three entities are created, Decode, Encode and ISP but all of the video
nodes use the same video name string "bcm2835-codec" which makes it
difficult to identify each role.

Append the role-name to the video name to facilitate identifying a
specific instance from userspace.

The Card-Type is also extended with the role name to support identifying
the device context from within QUERY_CAP operations.

Signed-off-by: Kieran Bingham <kieran.bingham@ideasonboard.com>

The static role text is declared incorrectly. The static should be
first, and the roles should also be constified.

Convert from "const static char *" to "static const char * const".

Signed-off-by: Kieran Bingham <kieran.bingham@ideasonboard.com>

The job_ready comment is incorrectly using the documentation prefix
(/**) which causes a warning at build time.

Simplify it.

Signed-off-by: Kieran Bingham <kieran.bingham@ideasonboard.com>

Adds an overlay for the IMX219 image sensor, connected to the
Unicam CSI2 receiver peripheral.

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

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

Adds a driver for the 8MPix Sony IMX219 CSI2 sensor.
Whilst the sensor supports 2 or 4 CSI2 data lanes, this driver
currently only supports 2 lanes.
8MPix @ 15fps, 1080P @ 30fps (cropped FOV), and 1640x1232 (2x2 binned)
@ 30fps are currently supported.

Signed-off-by: Dave Stevenson <dave.stevenson@raspberrypi.org>
Tested-by: Kieran Bingham <kieran.bingham@ideasonboard.com>

The IMX219 is an 8MPix CSI2 sensor, supporting 2 or 4 data lanes.
Document the binding for this device.

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

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

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

Signed-off-by: Trevor Stiles <tstiles@shel.org>

This is needed to identify the different models on distributions like OpenWrt.

Signed-off-by: Álvaro Fernández Rojas <noltari@gmail.com>

The ISP and ENCODE roles have the same underlying hardware. Neither requires vertical alignment.

Signed-off-by: Aman Gupta <aman@tmm1.net>

fixes #3171

Signed-off-by: Aman Gupta <aman@tmm1.net>

This code path hasn't been used previously.
Fixed up after testing with kodi on 32-bit userland and 64-bit kernel

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

The xtal parameter is targetting the wrong node - fix it.

See: https://github.com/raspberrypi/linux/issues/3156



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

Enable the V3D driver, which depends on BCM2835_POWER.

Originally submitted by GitHub user 'phire' in a slightly different
form.

See: https://github.com/raspberrypi/linux/pull/3063



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

The hardware will do a 4-byte write to memory on any IN packet received
that is between 1 and 3 bytes long. This tramples memory in the uvcvideo
driver, as it uses a sequence of 1- and 2-byte control transfers to
query the min/max/range/step of each individual camera control and
gives us buffers that are offsets into a struct.

Catch small control transfers in the data phase and use the align_buf
to bounce the correct number of bytes into the URB's buffer.

In general, short packets on non-control endpoints should be OK as URBs
should have enough buffer space for a wMaxPacket size transfer.

See: https://github.com/raspberrypi/linux/issues/3148



Signed-off-by: Jonathan Bell <jonathan@raspberrypi.org>

Users have reported log spam created by "Event Ring Full" xHC event
TRBs. These are caused by interrupt latency in conjunction with a very
busy set of devices on the bus. The errors are benign, but throughput
will suffer as the xHC will pause processing of transfers until the
event ring is drained by the kernel. Expand the number of event TRB slots
available by increasing the number of event ring segments in the ERST.

Controllers have a hardware-defined limit as to the number of ERST
entries they can process, so make the actual number in use
min(ERST_MAX_SEGS, hw_max).

Signed-off-by: Jonathan Bell <jonathan@raspberrypi.org>

The I2C interface nodes need aliases to give them fixed bus numbers,
and setting the pulls on the GPIOs (particularly 9-13) increases the
chances of the bus working with weak or absent external pulls.

See: https://www.raspberrypi.org/forums/posting.php?mode=reply&f=107&t=248439



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

See: https://github.com/raspberrypi/linux/issues/3141



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