platform/kernel/linux-rpi.git
3 years agozswap: Defer zswap initialisation
Phil Elwell [Tue, 5 May 2020 14:23:32 +0000 (15:23 +0100)]
zswap: Defer zswap initialisation

Enabling zswap support in the kernel configuration costs about 1.5MB
of RAM, even when zswap is not enabled at runtime. This cost can be
reduced significantly by deferring initialisation (including pool
creation) until the "enabled" parameter is set to true. There is a
small cost to this in that some initialisation code has to remain in
memory after the init phase, just in case they are needed later,
but the total size increase is negligible.

See: https://github.com/raspberrypi/linux/pull/3432

Signed-off-by: Phil Elwell <phil@raspberrypi.com>
3 years agomedia: bcm2835-unicam: Retain packing information on G_FMT
Dave Stevenson [Tue, 19 May 2020 10:46:47 +0000 (11:46 +0100)]
media: bcm2835-unicam: Retain packing information on G_FMT

The change to retrieve the pixel format always on g_fmt didn't
check whether the native or unpacked version of the format
had been requested, and always returned the packed one.
Correct this so that the packing setting is retained whereever
possible.

Fixes "9d59e89 media: bcm2835-unicam: Re-fetch mbus code from subdev
on a g_fmt call"

Signed-off-by: Dave Stevenson <dave.stevenson@raspberrypi.com>
3 years agokbuild: Disable gcc plugins
Phil Elwell [Wed, 8 Apr 2020 14:23:56 +0000 (15:23 +0100)]
kbuild: Disable gcc plugins

The GCC plugin feature leads to different kernel configurations on what
ought to be equivalent build systems because they depend on the build
hosts native compilers rather than the cross compilers needed for the
target. This causes problems with module symbol version mismatches.

Disable GCC plugins for all build hosts.

Advanced build script hackery borrowed from a patch by milhouse.

Signed-off-by: Phil Elwell <phil@raspberrypi.com>
3 years agostaging:vc04_services: bcm2835-camera: Request headers with I-frame
Dave Stevenson [Fri, 15 May 2020 12:48:59 +0000 (13:48 +0100)]
staging:vc04_services: bcm2835-camera: Request headers with I-frame

V4L2 wishes to have the codec header bytes in the same buffer as the
first encoded frame, so it does become 1-in 1-out for encoding.
The firmware now has an option to do this, so enable it.

Signed-off-by: Dave Stevenson <dave.stevenson@raspberrypi.com>
3 years agostaging: vc04_services: mmal-vchiq: Update parameters list
Dave Stevenson [Fri, 15 May 2020 12:42:10 +0000 (13:42 +0100)]
staging: vc04_services: mmal-vchiq: Update parameters list

Adds in a couple of new MMAL parameter defines.

Signed-off-by: Dave Stevenson <dave.stevenson@raspberrypi.com>
3 years agosc16is7xx: Fix for hardware flow control
Phil Elwell [Wed, 13 May 2020 19:10:15 +0000 (20:10 +0100)]
sc16is7xx: Fix for hardware flow control

The SC16IS7XX hardware flow control is mishandled by the driver in
a number of ways:

  1. The set_baud method accidentally clears it when setting EFR bit.
  2. Even though hardware flow control is enabled, it isn't indicated
     back to the serial framework.
  3. Applying the flow control clears the EFR bit.
  4. The CTS support is not indicated in the return from
     sc16is7xx_get_mctrl.

Address all of those issues using a mixture of patches found on the
linked pages.

See: https://github.com/raspberrypi/linux/issues/2542
See: https://www.spinics.net/lists/linux-serial/msg21794.html

Signed-off-by: Phil Elwell <phil@raspberrypi.com>
3 years agomedia: bcm2835-unicam: Always service interrupts
Dave Stevenson [Wed, 13 May 2020 17:28:27 +0000 (18:28 +0100)]
media: bcm2835-unicam: Always service interrupts

From when bringing up the driver, there was a check in the isr
to ignore interrupts (claiming them handled) should the driver
not be streaming.

The VPU now will not register a camera driver if it finds a
CSI2 node enabled in device tree, therefore this flawed check is
redundant.

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

Signed-off-by: Dave Stevenson <dave.stevenson@raspberrypi.com>
3 years agodt-bindings: media: i2c: Add IMX477 CMOS sensor binding
Naushir Patuck [Thu, 7 May 2020 14:50:54 +0000 (15:50 +0100)]
dt-bindings: media: i2c: Add IMX477 CMOS sensor binding

Add YAML device tree binding for IMX477 CMOS image sensor.

Signed-off-by: Naushir Patuck <naush@raspberrypi.com>
3 years agovideo: bcm2708_fb: Disable FB if no displays found
Phil Elwell [Tue, 5 May 2020 18:45:41 +0000 (19:45 +0100)]
video: bcm2708_fb: Disable FB if no displays found

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>
3 years agomedia: bcm2835: unicam: Fix uninitialized warning
Jacko Dirks [Tue, 5 May 2020 12:33:31 +0000 (14:33 +0200)]
media: bcm2835: unicam: Fix uninitialized warning

Signed-off-by: Jacko Dirks <jdirks.linuxdev@gmail.com>
3 years agomedia: i2c: tc358743: Fix fallthrough warning
Jacko Dirks [Tue, 5 May 2020 12:28:14 +0000 (14:28 +0200)]
media: i2c: tc358743: Fix fallthrough warning

Signed-off-by: Jacko Dirks <jdirks.linuxdev@gmail.com>
3 years agomedia: bcm2835-unicam: Fix reference counting in unicam_open
Dave Stevenson [Thu, 30 Apr 2020 08:52:50 +0000 (09:52 +0100)]
media: bcm2835-unicam: Fix reference counting in unicam_open

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>
3 years agomedia: bcm2835-unicam: Do not stop streaming in unicam_release
Dave Stevenson [Wed, 29 Apr 2020 21:05:09 +0000 (22:05 +0100)]
media: bcm2835-unicam: Do not stop streaming in unicam_release

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>
3 years agomedia: bcm2835-unicam: Add support for VIDIOC_[S|G]_SELECTION
Dave Stevenson [Wed, 29 Apr 2020 15:45:02 +0000 (16:45 +0100)]
media: bcm2835-unicam: Add support for VIDIOC_[S|G]_SELECTION

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>
3 years agomedia: i2c: ov5647: Advertise the correct exposure range
Dave Stevenson [Thu, 30 Apr 2020 10:03:00 +0000 (11:03 +0100)]
media: i2c: ov5647: Advertise the correct exposure range

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>
3 years agomedia: i2c: ov5647: Use member names in mode tables
Dave Stevenson [Wed, 29 Apr 2020 21:11:01 +0000 (22:11 +0100)]
media: i2c: ov5647: Use member names in mode tables

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>
3 years agomedia: i2c: ov5647: Neither analogue gain nor exposure need EXECUTE_ON_WRITE
Dave Stevenson [Wed, 29 Apr 2020 20:47:25 +0000 (21:47 +0100)]
media: i2c: ov5647: Neither analogue gain nor exposure need EXECUTE_ON_WRITE

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>
3 years agomedia: i2c: ov5647: Add support for V4L2_CID_VBLANK
Dave Stevenson [Wed, 29 Apr 2020 20:39:58 +0000 (21:39 +0100)]
media: i2c: ov5647: Add support for V4L2_CID_VBLANK

Adds vblank control to allow for frame rate control.

Signed-off-by: Dave Stevenson <dave.stevenson@raspberrypi.com>
3 years agomedia: i2c: ov5647: Set V4L2_SUBDEV_FL_HAS_EVENTS flag
Dave Stevenson [Wed, 29 Apr 2020 16:25:56 +0000 (17:25 +0100)]
media: i2c: ov5647: Set V4L2_SUBDEV_FL_HAS_EVENTS flag

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>
3 years agomedia: i2c: ov5647: Support V4L2_CID_PIXEL_RATE
Dave Stevenson [Wed, 29 Apr 2020 11:25:13 +0000 (12:25 +0100)]
media: i2c: ov5647: Support V4L2_CID_PIXEL_RATE

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>
3 years agomedia: i2c: ov5467: Fixup error path to release mutex
Dave Stevenson [Wed, 29 Apr 2020 10:50:52 +0000 (11:50 +0100)]
media: i2c: ov5467: Fixup error path to release mutex

"87f3ab9 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>
3 years agomedia: i2c: ov5647: Add support for g_selection to reflect cropping/binning
Dave Stevenson [Wed, 29 Apr 2020 10:46:07 +0000 (11:46 +0100)]
media: i2c: ov5647: Add support for g_selection to reflect cropping/binning

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>
3 years agomedia: ov5647: change defaults to better match raw camera applications.
David Plowman [Wed, 29 Jan 2020 15:31:32 +0000 (15:31 +0000)]
media: ov5647: change defaults to better match raw camera applications.

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>
3 years agomedia: ov5647: Add extra 10-bit sensor modes.
David Plowman [Wed, 29 Jan 2020 15:31:28 +0000 (15:31 +0000)]
media: ov5647: Add extra 10-bit sensor modes.

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>
3 years agomedia: ov5647: Add V4L2 controls for analogue gain, exposure and AWB
David Plowman [Wed, 29 Jan 2020 15:31:23 +0000 (15:31 +0000)]
media: ov5647: Add V4L2 controls for analogue gain, exposure and AWB

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>
3 years agomedia: ov5647: Add basic support for multiple sensor modes.
David Plowman [Wed, 29 Jan 2020 15:30:53 +0000 (15:30 +0000)]
media: ov5647: Add basic support for multiple sensor modes.

Specifically:

Added a structure ov5647_mode and a list of supported_modes (though no
actual new modes as yet). The state object points to the "current mode".

ov5647_enum_mbus_code, ov5647_enum_frame_size, ov5647_set_fmt and
ov5647_get_fmt all needed upgrading to cope with multiple modes.

__sensor_init (which writes all the registers) is now called by
ov5647_stream_on (once the mode is known) rather than by
ov5647_sensor_power.

Signed-off-by: David Plowman <david.plowman@raspberrypi.com>
Signed-off-by: Naushir Patuck <naush@raspberrypi.com>
3 years agomedia: ov5647: Fix return codes from ov5647_write/ov5647_read functions.
David Plowman [Wed, 15 Jan 2020 13:40:38 +0000 (13:40 +0000)]
media: ov5647: Fix return codes from ov5647_write/ov5647_read functions.

Previously they were returning positive non-zero codes for success,
which were getting passed up the call stack. Since release 4.19,
do_dentry_open (fs/open.c) has been catching these and flagging an
error. (So this driver has been broken since that date.)

Fixes: 3c2472a [media] media: i2c: Add support for OV5647 sensor
Signed-off-by: David Plowman <david.plowman@raspberrypi.org>
Signed-off-by: Naushir Patuck <naush@raspberrypi.com>
3 years agomedia: i2c: imx219: Declare that the driver can create events
Dave Stevenson [Mon, 20 Apr 2020 10:01:21 +0000 (11:01 +0100)]
media: i2c: imx219: Declare that the driver can create events

The flag V4L2_SUBDEV_FL_HAS_EVENTS is required if the subdev can
generate events. It can create events from the ctrl handler, therefore
this is required.

Signed-off-by: Dave Stevenson <dave.stevenson@raspberrypi.com>
3 years agooverlays: Make the i2c-gpio overlay safe again
Phil Elwell [Fri, 1 May 2020 16:56:13 +0000 (17:56 +0100)]
overlays: Make the i2c-gpio overlay safe again

Like many overlays, the i2c-gpio overlay goes to efforts to avoid
generating warnings about #address-cells and #size-cells not
being defined, which it does by defining them. Unfortunately this
is fatal if they don't match what the system requires, and the
recent switch to #size-cells = 2 on 2711 made i2c-gpio very
dangerous.

In the absence of the knowledge of a clean way to fix this, just delete
the declarations and suffer the warnings.

Signed-off-by: Phil Elwell <phil@raspberrypi.com>
3 years agobcm2835-dma: Add proper 40-bit DMA support
Phil Elwell [Thu, 4 Apr 2019 12:33:47 +0000 (13:33 +0100)]
bcm2835-dma: Add proper 40-bit DMA support

BCM2711 has 4 DMA channels with a 40-bit address range, allowing them
to access the full 4GB of memory on a Pi 4.

Signed-off-by: Phil Elwell <phil@raspberrypi.org>
3 years agostaging: vchiq: Load bcm2835_isp driver from vchiq
Naushir Patuck [Wed, 22 Apr 2020 07:32:32 +0000 (08:32 +0100)]
staging: vchiq: Load bcm2835_isp driver from vchiq

bcmn2835_isp is a platform driver dependent on vchiq,
therefore add the load/unload functions for it to vchiq.

Signed-off-by: Naushir Patuck <naush@raspberrypi.com>
3 years agomedia: uapi: v4l-ctrls: Add CID base for the bcm2835-isp driver
Naushir Patuck [Tue, 21 Apr 2020 14:06:19 +0000 (15:06 +0100)]
media: uapi: v4l-ctrls: Add CID base for the bcm2835-isp driver

We are reserving controls for the new bcm2835-isp driver.

Signed-off-by: Naushir Patuck <naush@raspberrypi.com>
3 years agomedia: uapi: v4l2-core: Add ISP statistics output V4L2 fourcc type
Naushir Patuck [Thu, 23 Apr 2020 09:20:26 +0000 (10:20 +0100)]
media: uapi: v4l2-core: Add ISP statistics output V4L2 fourcc type

Add V4L2_META_FMT_BCM2835_ISP_STATS V4L2 format type.

This new format will be used by the BCM2835 ISP device to return
out ISP statistics for 3A.

Signed-off-by: Naushir Patuck <naush@raspberrypi.com>
3 years agomedia: bcm2835-unicam: Re-fetch mbus code from subdev on a g_fmt call
Naushir Patuck [Tue, 21 Apr 2020 15:26:03 +0000 (16:26 +0100)]
media: bcm2835-unicam: Re-fetch mbus code from subdev on a g_fmt call

The sensor subdevice may change the Bayer order if a H/V flip is
requested after a s_fmt call.  Unicam g_fmt must call the subdev get_fmt
in case this has happened and return out the correct format 4cc.

Signed-off-by: Naushir Patuck <naush@raspberrypi.com>
3 years agomedia: imx219: Advertise embedded data node on media pad 1
Naushir Patuck [Thu, 12 Mar 2020 14:09:38 +0000 (14:09 +0000)]
media: imx219: Advertise embedded data node on media pad 1

This commit updates the imx219 driver to adverise support for embedded
data streams.  This can then be used by the bcm2835-unicam driver, which
has recently been updated to expose the embedded data stream to
userland.

The imx219 sensor subdevice overloads the media pad to differentiate
between image stream (pad 0) and embedded data stream (pad 1) when
performing the v4l2_subdev_pad_ops functions.

Signed-off-by: Naushir Patuck <naush@raspberrypi.com>
3 years agomedia: bcm2835-unicam: Add support for the FRAME_SYNC event
Laurent Pinchart [Tue, 24 Mar 2020 21:13:02 +0000 (23:13 +0200)]
media: bcm2835-unicam: Add support for the FRAME_SYNC event

The FRAME_SYNC event is useful for userspace image processing algorithms
to program the camera sensor as early as possible after frame start.
Support it.

Signed-off-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
Reviewed-by: Kieran Bingham <kieran.bingham@ideasonboard.com>
Reviewed-by: Jacopo Mondi <jacopo@jmondi.org>
Reviewed-by: Naushir Patuck <naush@raspberrypi.com>
3 years agomedia: bcm2835-unicam: Disable event-related ioctls on metadata node
Laurent Pinchart [Tue, 24 Mar 2020 21:13:02 +0000 (23:13 +0200)]
media: bcm2835-unicam: Disable event-related ioctls on metadata node

The unicam driver supports both the SOURCE_CHANGE and CTRL events. Both
events are only generated on the image video node, so the event-related
ioctls are useless on the medatada node. Disable them.

Signed-off-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
Reviewed-by: Jacopo Mondi <jacopo@jmondi.org>
Reviewed-by: Naushir Patuck <naush@raspberrypi.com>
3 years agomedia: bcm2835-unicam: Use dummy buffer if none have been queued
Naushir Patuck [Thu, 2 Apr 2020 15:08:51 +0000 (16:08 +0100)]
media: bcm2835-unicam: Use dummy buffer if none have been queued

If no buffer has been queued by a userland application, we use an
internal dummy buffer for the hardware to spin in. This will allow
the driver to release the existing userland buffer back to the
application for processing.

Signed-off-by: Naushir Patuck <naush@raspberrypi.com>
3 years agomedia: bcm2835-unicam: Add embedded data node.
Naushir Patuck [Thu, 16 Apr 2020 10:35:41 +0000 (11:35 +0100)]
media: bcm2835-unicam: Add embedded data node.

This patch adds a new node in the bcm2835-unicam driver to support
CSI-2 embedded data streams.  The subdevice is queried to see if
embedded data is available from the sensor.

Signed-off-by: Naushir Patuck <naush@raspberrypi.com>
3 years agomedia: bcm2835-unicam: Add support for mulitple device nodes.
Naushir Patuck [Tue, 7 Apr 2020 09:42:14 +0000 (10:42 +0100)]
media: bcm2835-unicam: Add support for mulitple device nodes.

Move device node specific state out of the device state structure and
into a new node structure.  This separation will be needed for future
changes where we will add an embedded data node to the driver to work
alongside the existing image data node.

Currently only use a single image node, so this commit does not add
any functional changes.

Signed-off-by: Naushir Patuck <naush@raspberrypi.com>
3 years agomedia: uapi: Add MEDIA_BUS_FMT_SENSOR_DATA media bus format
Naushir Patuck [Tue, 21 Jan 2020 14:06:47 +0000 (14:06 +0000)]
media: uapi: Add MEDIA_BUS_FMT_SENSOR_DATA media bus format

This patch adds MEDIA_BUS_FMT_SENSOR_DATA used by the bcm2835-unicam
driver to support CSI-2 embedded data streams from camera sensors.

Signed-off-by: Naushir Patuck <naush@raspberrypi.com>
3 years agomedia: uapi: v4l2-core: Add sensor ancillary data V4L2 foucc type.
Naushir Patuck [Wed, 1 Apr 2020 07:46:29 +0000 (08:46 +0100)]
media: uapi: v4l2-core: Add sensor ancillary data V4L2 foucc type.

Add V4L2_META_FMT_SENSOR_DATA format 4CC.

This new format will be used by the BCM2835 Unicam device to return
out camera sensor embedded data.

Signed-off-by: Naushir Patuck <naush@raspberrypi.com>
3 years agomedia: bcm2835-unicam: Driver for CCP2/CSI2 camera interface
Naushir Patuck [Wed, 1 Apr 2020 07:39:49 +0000 (08:39 +0100)]
media: bcm2835-unicam: Driver for CCP2/CSI2 camera interface

Add driver for the Unicam camera receiver block on
BCM283x processors.

This commit is made up of a series of changes cherry-picked from the
rpi-4.19.y branch.

Signed-off-by: Dave Stevenson <dave.stevenson@raspberrypi.com>
Signed-off-by: Naushir Patuck <naush@raspberrypi.com>
3 years agodriver: char: rpivid: Don't map more than wanted
Phil Elwell [Tue, 21 Apr 2020 10:30:23 +0000 (11:30 +0100)]
driver: char: rpivid: Don't map more than wanted

Limit mappings to the permitted range, but don't map more than asked
for otherwise we walk off the end of the allocated VMA.

Signed-off-by: Phil Elwell <phil@raspberrypi.com>
3 years agospi: Force CS_HIGH if GPIO descriptors are used
Phil Elwell [Fri, 17 Apr 2020 09:46:19 +0000 (10:46 +0100)]
spi: Force CS_HIGH if GPIO descriptors are used

Commit f3186dd87669 ("spi: Optionally use GPIO descriptors for CS GPIOs")
amended of_spi_parse_dt() to always set SPI_CS_HIGH for SPI slaves whose
Chip Select is defined by a "cs-gpios" devicetree property.

This change breaks drivers whose probe functions set the mode field of
the spi_device because in doing so they clear the SPI_CS_HIGH flag.

Fix by setting SPI_CS_HIGH in spi_setup (under the same conditions as
in of_spi_parse_dt()).

See also: 83b2a8fe43bd ("spi: spidev: Fix CS polarity if GPIO descriptors are used")

Fixes: f3186dd87669 ("spi: Optionally use GPIO descriptors for CS GPIOs")
Signed-off-by: Phil Elwell <phil@raspberrypi.com>
SQUASH: spi: Demote SPI_CS_HIGH warning to KERN_DEBUG

This warning is unavoidable from a client's perspective and
doesn't indicate anything wrong (just surprising).

SQUASH with "spi: use_gpio_descriptor fixup moved to spi_setup"

Signed-off-by: Phil Elwell <phil@raspberrypi.com>
3 years agodriver: char: rpivid: Remove legacy name support
Phil Elwell [Mon, 20 Apr 2020 21:18:52 +0000 (22:18 +0100)]
driver: char: rpivid: Remove legacy name support

Signed-off-by: Phil Elwell <phil@raspberrypi.com>
3 years agooverlays: Fix dtc warnings in i2c-gpio
Phil Elwell [Wed, 8 Apr 2020 10:59:39 +0000 (11:59 +0100)]
overlays: Fix dtc warnings in i2c-gpio

Better late than never.

Signed-off-by: Phil Elwell <phil@raspberrypi.com>
3 years agodrm: Checking of the pitch is only valid for linear formats
Dave Stevenson [Mon, 27 Jan 2020 10:22:44 +0000 (10:22 +0000)]
drm: Checking of the pitch is only valid for linear formats

framebuffer_check was computing a minimum pitch value and ensuring
that the provided value was greater than this.
That check is only valid if the format is linear.

Signed-off-by: Dave Stevenson <dave.stevenson@raspberrypi.com>
3 years agodt-bindings: display: vc4: hdmi: Add BCM2711 HDMI controllers bindings
Maxime Ripard [Thu, 13 Feb 2020 15:45:24 +0000 (16:45 +0100)]
dt-bindings: display: vc4: hdmi: Add BCM2711 HDMI controllers bindings

The HDMI controllers found in the BCM2711 SoC need some adjustments to the
bindings, especially since the registers have been shuffled around in more
register ranges.

Cc: Rob Herring <robh+dt@kernel.org>
Cc: devicetree@vger.kernel.org
Signed-off-by: Maxime Ripard <maxime@cerno.tech>
3 years agodt-bindings: clock: Add a binding for the RPi Firmware clocks
Maxime Ripard [Thu, 13 Feb 2020 16:51:09 +0000 (17:51 +0100)]
dt-bindings: clock: Add a binding for the RPi Firmware clocks

The firmare running on the RPi VideoCore can be used to discover and
change the various clocks running in the BCM2711. Since devices will
need to use them through the DT, let's add a pretty simple binding.

Cc: Michael Turquette <mturquette@baylibre.com>
Cc: Stephen Boyd <sboyd@kernel.org>
Cc: Rob Herring <robh+dt@kernel.org>
Cc: linux-clk@vger.kernel.org
Cc: devicetree@vger.kernel.org
Signed-off-by: Maxime Ripard <maxime@cerno.tech>
3 years agommc: sdhci: Silence MMC warnings
Maxime Ripard [Fri, 6 Dec 2019 12:05:27 +0000 (13:05 +0100)]
mmc: sdhci: Silence MMC warnings

When the MMC isn't plugged in, the driver will spam the console which is
pretty annoying when using NFS.

Signed-off-by: Maxime Ripard <maxime@cerno.tech>
3 years agostaging: media: Add Raspberry Pi V4L2 H265 decoder
John Cox [Thu, 5 Mar 2020 18:30:41 +0000 (18:30 +0000)]
staging: media: Add Raspberry Pi V4L2 H265 decoder

This driver is for the HEVC/H265 decoder block on the Raspberry
Pi 4, and conforms to the V4L2 stateless decoder API.

Signed-off-by: John Cox <jc@kynesim.co.uk>
3 years agomedia: dt-bindings: media: Add binding for the Raspberry PI HEVC decoder
Dave Stevenson [Tue, 17 Mar 2020 10:53:16 +0000 (10:53 +0000)]
media: dt-bindings: media: Add binding for the Raspberry PI HEVC decoder

Adds a binding for the HEVC decoder found on the BCM2711 / Raspberry Pi 4.

Signed-off-by: Dave Stevenson <dave.stevenson@raspberrypi.com>
3 years agomedia: v4l2-mem2mem: allow request job buffer processing after job finish
John Cox [Thu, 5 Mar 2020 14:46:54 +0000 (14:46 +0000)]
media: v4l2-mem2mem: allow request job buffer processing after job finish

Allow the capture buffer to be detached from a v4l2 request job such
that another job can start before the capture buffer is returned. This
allows h/w codecs that can process multiple requests at the same time
to operate more efficiently.

Signed-off-by: John Cox <jc@kynesim.co.uk>
3 years agomedia: videodev2.h: Add a format for column YUV4:2:0 modes
Dave Stevenson [Fri, 24 Jan 2020 14:28:21 +0000 (14:28 +0000)]
media: videodev2.h: Add a format for column YUV4:2:0 modes

Some of the Broadcom codec blocks use a column based YUV4:2:0 image
format, so add the documentation and defines for both 8 and 10 bit
versions.

Signed-off-by: Dave Stevenson <dave.stevenson@raspberrypi.com>
3 years agomedia: uapi: Add hevc ctrls for WPP decoding
Dave Stevenson [Mon, 23 Mar 2020 19:00:17 +0000 (19:00 +0000)]
media: uapi: Add hevc ctrls for WPP decoding

WPP can allow greater parallelism within the decode, but needs
offset information to be passed in.

Adds num_entry_point_offsets and entry_point_offset_minus1 to
v4l2_ctrl_hevc_slice_params.

This is based on Jernej Skrabec's patches for cedrus which
implement the same feature.

Signed-off-by: Dave Stevenson <dave.stevenson@raspberrypi.com>
3 years agomedia: hevc_ctrls: Add slice param dependent slice segment
Dave Stevenson [Mon, 23 Mar 2020 18:34:01 +0000 (18:34 +0000)]
media: hevc_ctrls: Add slice param dependent slice segment

Adds V4L2_HEVC_SLICE_PARAMS_FLAG_DEPENDENT_SLICE_SEGMENT define.

Signed-off-by: Dave Stevenson <dave.stevenson@raspberrypi.com>
3 years agomedia: uapi: hevc: Add segment address field
Jernej Skrabec [Fri, 13 Dec 2019 16:04:27 +0000 (17:04 +0100)]
media: uapi: hevc: Add segment address field

From https://patchwork.linuxtv.org/patch/60725/
Changes requested, but mainly docs.

If HEVC frame consists of multiple slices, segment address has to be
known in order to properly decode it.

Add segment address field to slice parameters.

Signed-off-by: Jernej Skrabec <jernej.skrabec@siol.net>
3 years agomedia: uapi: hevc: Add scaling matrix control
Jernej Skrabec [Fri, 13 Dec 2019 16:04:25 +0000 (17:04 +0100)]
media: uapi: hevc: Add scaling matrix control

Taken from https://patchwork.linuxtv.org/patch/60728/
Changes (mainly documentation) have been requested.

HEVC has a scaling matrix concept. Add support for it.

Signed-off-by: Jernej Skrabec <jernej.skrabec@siol.net>
3 years agodrm/fourcc: Add packed 10bit YUV 4:2:0 format
Dave Stevenson [Fri, 24 Jan 2020 14:22:06 +0000 (14:22 +0000)]
drm/fourcc: Add packed 10bit YUV 4:2:0 format

Adds a format that is 3 10bit YUV 4:2:0 samples packed into
a 32bit work (with 2 spare bits).

Supported on Broadcom BCM2711 chips.

Signed-off-by: Dave Stevenson <dave.stevenson@raspberrypi.com>
3 years agobcmgenet: Disable skip_umac_reset by default
popcornmix [Wed, 1 Apr 2020 10:22:44 +0000 (11:22 +0100)]
bcmgenet: Disable skip_umac_reset by default

Possible fixed upstream by 'net: bcmgenet: keep MAC in reset until PHY is up'

Signed-off-by: popcornmix <popcornmix@gmail.com>
3 years agoKbuild: Allow .dtbo overlays to be built, adjust.
Nataliya Korovkina [Thu, 12 Mar 2020 21:22:53 +0000 (17:22 -0400)]
Kbuild: Allow .dtbo overlays to be built, adjust.

This is adjustment to commit
d368ceaacdccd7732dc97d1d7987bdf7149d62e3 "kbuild: Allow .dtbo overlays to be built piecemeal"

prepare3 target has gone from mainline tree in branch 5.4.y

Signed-off-by: Nataliya Korovkina <malus.brandywine@gmail.com>
3 years agodt-bindings: pci: Add DT docs for Brcmstb PCIe device
Jim Quinlan [Mon, 15 Jan 2018 23:28:39 +0000 (18:28 -0500)]
dt-bindings: pci: Add DT docs for Brcmstb PCIe device

The DT bindings description of the Brcmstb PCIe device is described.  This
node can be used by almost all Broadcom settop box chips, using
ARM, ARM64, or MIPS CPU architectures.

Signed-off-by: Jim Quinlan <jim2101024@gmail.com>
3 years agoof: overlay: Correct symbol path fixups
Phil Elwell [Thu, 6 Feb 2020 12:23:15 +0000 (12:23 +0000)]
of: overlay: Correct symbol path fixups

When symbols from overlays are added to the live tree their paths must
be rebased. The translated symbol is normally the result of joining
the fragment-relative path (with a leading "/") to the target path
(either copied directly from the "target-path" property or resolved
from the phandle). This translation fails when the target is the root
node (a common case for Raspberry Pi overlays) because the resulting
path starts with a double slash. For example, if target-path is "/" and
the fragment adds a node called "newnode", the label associated with
that node will be assigned the path "//newnode", which can't be found
in the tree.

Fix the failure case by explicitly replacing a target path of "/" with
an empty string.

Fixes: d1651b03c2df ("of: overlay: add overlay symbols to live device tree")

Signed-off-by: Phil Elwell <phil@raspberrypi.com>
3 years agovideo: fbdev: bcm2708_fb: Use common compat header
Phil Elwell [Mon, 2 Mar 2020 14:42:23 +0000 (14:42 +0000)]
video: fbdev: bcm2708_fb: Use common compat header

The definition of compat_ptr is now common for most platforms, but
requires the inclusion of <linux/compat.h>.

Signed-off-by: Phil Elwell <phil@raspberrypi.com>
3 years agodrivers: char: vcio: Use common compat header
Phil Elwell [Mon, 2 Mar 2020 14:40:19 +0000 (14:40 +0000)]
drivers: char: vcio: Use common compat header

The definition of compat_ptr is now common for most platforms, but
requires the inclusion of <linux/compat.h>.

Signed-off-by: Phil Elwell <phil@raspberrypi.com>
3 years agopinctrl: bcm2835: Accept fewer than expected IRQs
Phil Elwell [Tue, 25 Feb 2020 17:38:20 +0000 (17:38 +0000)]
pinctrl: bcm2835: Accept fewer than expected IRQs

The downstream .dts files only request two GPIO IRQs. Truncate the
array of parent IRQs when irq_of_parse_and_map returns 0.

Signed-off-by: Phil Elwell <phil@raspberrypi.com>
3 years agopinctrl: bcm2835: Change init order for gpio hogs
Phil Elwell [Mon, 6 Jan 2020 14:05:42 +0000 (14:05 +0000)]
pinctrl: bcm2835: Change init order for gpio hogs

pinctrl-bcm2835 is a combined pinctrl/gpio driver. Currently the gpio
side is registered first, but this breaks gpio hogs (which are
configured during gpiochip_add_data). Part of the hog initialisation
is a call to pinctrl_gpio_request, and since the pinctrl driver hasn't
yet been registered this results in an -EPROBE_DEFER from which it can
never recover.

Change the initialisation sequence to register the pinctrl driver
first.

See: https://www.raspberrypi.org/forums/viewtopic.php?f=107&t=260600

Signed-off-by: Phil Elwell <phil@raspberrypi.org>
3 years agopinctrl: bcm2835: Remove gpiochip on error
Phil Elwell [Mon, 6 Jan 2020 16:04:30 +0000 (16:04 +0000)]
pinctrl: bcm2835: Remove gpiochip on error

A failure in gpiochip_irqchip_add leads to a leak of a gpiochip. Fix
the leak with the use of devm_gpiochip_add_data.

Fixes: 85ae9e512f43 ("pinctrl: bcm2835: switch to GPIOLIB_IRQCHIP")
Signed-off-by: Phil Elwell <phil@raspberrypi.org>
3 years agostaging: vchiq_arm: Give vchiq children DT nodes
Phil Elwell [Mon, 3 Feb 2020 17:30:46 +0000 (17:30 +0000)]
staging: vchiq_arm: Give vchiq children DT nodes

vchiq kernel clients are now instantiated as platform drivers rather
than using DT, but the children of the vchiq interface may still
benefit from access to DT properties. Give them the option of a
a sub-node of the vchiq parent for configuration and to allow
them to be disabled.

Signed-off-by: Phil Elwell <phil@raspberrypi.com>
3 years agoInitialise rpi-firmware before clk-bcm2835
Luke Hinds [Wed, 22 Jan 2020 16:03:00 +0000 (16:03 +0000)]
Initialise rpi-firmware before clk-bcm2835

The IMA (Integrity Measurement Architecture) looks for a TPM (Trusted
Platform Module) having been registered when it initialises; otherwise
it assumes there is no TPM. It has been observed on BCM2835 that IMA
is initialised before TPM, and that initialising the BCM2835 clock
driver before the firmware driver has the effect of reversing this
order.

Change the firmware driver to initialise at core_initcall, delaying the
BCM2835 clock driver to postcore_initcall.

See: https://github.com/raspberrypi/linux/issues/3291
     https://github.com/raspberrypi/linux/pull/3297

Signed-off-by: Luke Hinds <lhinds@redhat.com>
Co-authored-by: Phil Elwell <phil@raspberrypi.org>
3 years agoARM: bcm: Backport BCM2711 support from upstream
Stefan Wahren [Fri, 27 Dec 2019 10:40:56 +0000 (11:40 +0100)]
ARM: bcm: Backport BCM2711 support from upstream

Make the BCM2711 a different machine, but keep it in board_bcm2835.

Signed-off-by: Stefan Wahren <wahrenst@gmx.net>
3 years agostaging: vchiq: Use the old dma controller for OF config on platform devices
Dave Stevenson [Tue, 18 Jun 2019 11:15:50 +0000 (12:15 +0100)]
staging: vchiq: Use the old dma controller for OF config on platform devices

vchiq on Pi4 is no longer under the soc node, therefore it
doesn't get the dma-ranges for the VPU.

Switch to using the configuration of the old dma controller as
that will set the dma-ranges correctly.

Signed-off-by: Dave Stevenson <dave.stevenson@raspberrypi.org>
3 years agostaging: vchiq_arm: Set up dma ranges on child devices
Dave Stevenson [Tue, 29 Jan 2019 16:13:25 +0000 (16:13 +0000)]
staging: vchiq_arm: Set up dma ranges on child devices

The VCHIQ driver now loads the audio, camera, codec, and vc-sm
drivers as platform drivers. However they were not being given
the correct DMA configuration.

Call of_dma_configure with the parent (VCHIQ) parameters to be
inherited by the child.

Signed-off-by: Dave Stevenson <dave.stevenson@raspberrypi.org>
3 years agodrm/v3d: Set dma_mask as well as coherent_dma_mask
Phil Elwell [Fri, 22 Nov 2019 16:23:32 +0000 (16:23 +0000)]
drm/v3d: Set dma_mask as well as coherent_dma_mask

Both coherent_dma_mask and dma_mask act as constraints on allocations
and bounce buffer usage, so be sure to set dma_mask to the appropriate
value otherwise the effective mask could be incorrect.

Signed-off-by: Phil Elwell <phil@raspberrypi.org>
3 years agoclk-bcm2835: Disable v3d clock
popcornmix [Tue, 3 Sep 2019 19:28:00 +0000 (20:28 +0100)]
clk-bcm2835: Disable v3d clock

This is controlled by firmware, see clk-raspberrypi.c

Signed-off-by: popcornmix <popcornmix@gmail.com>
3 years agoclk-raspberrypi: Allow cpufreq driver to also adjust gpu clocks
popcornmix [Mon, 9 Sep 2019 14:49:56 +0000 (15:49 +0100)]
clk-raspberrypi: Allow cpufreq driver to also adjust gpu clocks

For performance/power it is beneficial to adjust gpu clocks with arm clock.
This is how the downstream cpufreq driver works

Signed-off-by: popcornmix <popcornmix@gmail.com>
3 years agov3d_gem: Kick the clock so firmware knows we are using firmware clock interface
popcornmix [Thu, 5 Sep 2019 16:59:14 +0000 (17:59 +0100)]
v3d_gem: Kick the clock so firmware knows we are using firmware clock interface

Setting the v3d clock to low value allows firmware to handle dvfs in case
where v3d hardware is not being actively used (e.g. console use).

Signed-off-by: popcornmix <popcornmix@gmail.com>
3 years agov3d_drv: Handle missing clock more gracefully
popcornmix [Fri, 23 Aug 2019 15:34:38 +0000 (16:34 +0100)]
v3d_drv: Handle missing clock more gracefully

Signed-off-by: popcornmix <popcornmix@gmail.com>
3 years agonet:phy:2711 Change the default ethernet LED actions
James Hughes [Thu, 7 Nov 2019 14:59:59 +0000 (14:59 +0000)]
net:phy:2711 Change the default ethernet LED actions

This should return default behaviour back to that of previous
releases.

3 years agonet:phy:2711 Allow ethernet LED mode to be set via device tree
James Hughes [Thu, 31 Oct 2019 14:39:44 +0000 (14:39 +0000)]
net:phy:2711 Allow ethernet LED mode to be set via device tree

Add device tree entries and code to allow the specification of
the lighting modes for the LED's on the ethernet connector.

Signed-off-by: James Hughes <james.hughes@raspberrypi.org>
3 years agonet: bcmgenet: The second IRQ is optional
Phil Elwell [Thu, 14 Nov 2019 11:59:01 +0000 (11:59 +0000)]
net: bcmgenet: The second IRQ is optional

As of 5.4, the kernel logs errors for absent IRQs unless requested
with platform_get_irq_optional.

Signed-off-by: Phil Elwell <phil@raspberrypi.org>
3 years agostaging: vchiq_arm: Register bcm2835-codec as a platform driver
Dave Stevenson [Wed, 6 Nov 2019 13:57:58 +0000 (13:57 +0000)]
staging: vchiq_arm: Register bcm2835-codec as a platform driver

Following the same pattern as bcm2835-camera and bcm2835-audio,
register the V4L2 codec driver as a platform driver

Signed-off-by: Dave Stevenson <dave.stevenson@raspberrypi.com>
3 years agostaging: vchiq_arm: Register vcsm-cma as a platform driver
Dave Stevenson [Wed, 6 Nov 2019 13:57:48 +0000 (13:57 +0000)]
staging: vchiq_arm: Register vcsm-cma as a platform driver

Following the same pattern as bcm2835-camera and bcm2835-audio,
register the vcsm-cma driver as a platform driver

Signed-off-by: Dave Stevenson <dave.stevenson@raspberrypi.com>
3 years agodrm/v3d: Plug dma_fence leak
Phil Elwell [Tue, 12 Nov 2019 16:41:21 +0000 (16:41 +0000)]
drm/v3d: Plug dma_fence leak

The irq_fence and done_fence are given a reference that is never
released. The necessary dma_fence_put()s seem to have been
deleted in error in an earlier commit.

Fixes: 0b73676836b2 ("drm/v3d: Clock V3D down when not in use.")

Signed-off-by: Phil Elwell <phil@raspberrypi.org>
3 years agodrm/v3d: Suppress all but the first MMU error
Phil Elwell [Mon, 11 Nov 2019 20:18:08 +0000 (20:18 +0000)]
drm/v3d: Suppress all but the first MMU error

The v3d driver currently encounters a lot of MMU PTE exceptions, so
only log the first to avoid swamping the kernel log.

Signed-off-by: Phil Elwell <phil@raspberrypi.org>
3 years agodrm/v3d: Don't clear MMU control bits on exception
Phil Elwell [Mon, 11 Nov 2019 14:01:41 +0000 (14:01 +0000)]
drm/v3d: Don't clear MMU control bits on exception

MMU exception conditions are reported in the V3D_MMU_CTRL register as
write-1-to-clear (W1C) bits. The MMU interrupt handling code clears any
exceptions, but does so by masking out any other bits and writing the
result back. There are some important control bits in that register,
including MMU_ENABLE, so a safer approach is to simply write back the
value just read unaltered.

This patch doesn't remove the cause of the apparent PTE errors, but it
does reduce the impact to just an error in the kernel log.

Signed-off-by: Phil Elwell <phil@raspberrypi.org>
3 years agomedia: i2c: Add a driver for the Infineon IRS1125 depth sensor
Markus Proeller [Thu, 10 Oct 2019 17:12:36 +0000 (19:12 +0200)]
media: i2c: Add a driver for the Infineon IRS1125 depth sensor

The Infineon IRS1125 is a time of flight depth sensor that
has a CSI-2 interface.

Add a V4L2 subdevice driver for this device.

Signed-off-by: Markus Proeller <markus.proeller@pieye.org>
3 years agodt-bindings: Add binding for the Infineon IRS1125 sensor
Markus Proeller [Thu, 10 Oct 2019 17:12:08 +0000 (19:12 +0200)]
dt-bindings: Add binding for the Infineon IRS1125 sensor

Adds a binding for the Infineon IRS1125 time-of-flight depth
sensor.

Signed-off-by: Markus Proeller <markus.proeller@pieye.org>
3 years agoRename HDMI ALSA device names, check for enable state
James Hughes [Tue, 24 Sep 2019 17:26:55 +0000 (18:26 +0100)]
Rename HDMI ALSA device names, check for enable state

HDMI Alsa devices renamed to match names used by DRM, to
HDMI 1 and HDMI 2

Check for which HDMI devices are connected and only create
devices for those that are present.

The rename of the devices might cause some backwards compatibility
issues, but since this particular part of the driver needs to be
specifically enabled, I suspect the number of people who will see
the problem will be very small.

Signed-off-by: James Hughes <james.hughes@raspberrypi.org>
3 years agoARM: bcm: Switch board, clk and pinctrl to bcm2711 compatible
Stefan Wahren [Thu, 19 Sep 2019 18:45:30 +0000 (20:45 +0200)]
ARM: bcm: Switch board, clk and pinctrl to bcm2711 compatible

After the decision to use bcm2711 compatible for upstream, we should
switch all accepted compatibles to bcm2711. So we can boot with
one DTB the down- and the upstream kernel.

Signed-off-by: Stefan Wahren <wahrenst@gmx.net>
3 years agokbuild: Allow .dtbo overlays to be built piecemeal
Phil Elwell [Mon, 23 Sep 2019 08:26:41 +0000 (09:26 +0100)]
kbuild: Allow .dtbo overlays to be built piecemeal

Before 4.20, it was possible to build an arbitrary overlay by copying
it to arm/boot/dts/overlays/mytest-overlay.dts and running:

    make ARCH=arm overlays/mytest.dtbo

In 4.20 the .dtb build rules were centralised, requiring the dowstream
.dtbo build rules to be changed. They were, enough to support "make ...
dtbs", but not sufficiently to allow this ad-hoc, one-off building of
individual files.

Add the missing makefile rule to support this way of building.

See: https://github.com/raspberrypi/linux/issues/3250

Signed-off-by: Phil Elwell <phil@raspberrypi.org>
3 years agodrm/v3d: Delete pm_runtime support
Phil Elwell [Wed, 18 Sep 2019 16:22:36 +0000 (17:22 +0100)]
drm/v3d: Delete pm_runtime support

The pm_runtime was blocking changelist submission, so delete it as a
temporary workaround.

Signed-off-by: Phil Elwell <phil@raspberrypi.org>
3 years agostaging: bcm2835-camera: Add greyworld AWB mode
Dave Stevenson [Fri, 6 Sep 2019 14:13:06 +0000 (15:13 +0100)]
staging: bcm2835-camera: Add greyworld AWB mode

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>
3 years agov4l2: Add a Greyworld AWB mode.
Dave Stevenson [Fri, 6 Sep 2019 14:04:51 +0000 (15:04 +0100)]
v4l2: Add a Greyworld AWB mode.

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>
3 years agomedia: dt-bindings: Add binding for the Sony IMX219 sensor
Dave Stevenson [Wed, 28 Aug 2019 12:34:30 +0000 (13:34 +0100)]
media: dt-bindings: Add binding for the Sony IMX219 sensor

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>
3 years agoarch/arm64: Add Revision, Serial, Model to cpuinfo
Phil Elwell [Tue, 3 Sep 2019 17:17:25 +0000 (18:17 +0100)]
arch/arm64: Add Revision, Serial, Model to cpuinfo

Signed-off-by: Phil Elwell <phil@raspberrypi.org>
3 years agoarch/arm: Add model string to cpuinfo
Phil Elwell [Tue, 3 Sep 2019 17:16:56 +0000 (18:16 +0100)]
arch/arm: Add model string to cpuinfo

Signed-off-by: Phil Elwell <phil@raspberrypi.org>
3 years agoconfigs: arm64/bcm2711: Enable V3D
Phil Elwell [Thu, 15 Aug 2019 11:02:34 +0000 (12:02 +0100)]
configs: arm64/bcm2711: Enable V3D

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>
3 years agoxhci: Use more event ring segment table entries
Jonathan Bell [Tue, 13 Aug 2019 14:53:29 +0000 (15:53 +0100)]
xhci: Use more event ring segment table entries

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>