Add numa_policy kernel argument to allow overriding the kernel's default
NUMA policy at boot time.
Syntax identical to what tmpfs accepts as it's mpol argument is accepted.
Some examples:
numa_policy=interleave
numa_policy=interleave=skip-interleave
numa_policy=bind:0-3,5,7,9-15
numa_policy=bind=static:1-2
Signed-off-by: Tvrtko Ursulin <tvrtko.ursulin@igalia.com>
The i.MX8MP makes calls on it's source device to determine
the link-frequency that should be configured on the CSI2 receiver.
When the source is behind a video mux, we need to pass this call through
to the connected device.
Map the control handler of the source device to the video-mux,
essentially proxying all controls on the mux to the device which has
it's link enabled.
Signed-off-by: Kieran Bingham <kieran.bingham@ideasonboard.com>
Add EXPORT_SYMBOL_GPL() for find_cpio_data() so that loadable modules
may also parse uncompressed cpio.
Signed-off-by: Richard Oliver <richard.oliver@raspberrypi.com>
The Sony IMX500 is a stacked 1/2.3-inch CMOS digital image sensor and
inbuilt AI processor with an active array CNN (Convolutional Neural
Network) inference engine. The native sensor size is 4056H x 3040V, and
the module also contains an in-built ISP for the CNN. The module is
programmable through an I2C interface with firmware and neural network
uploads being made over SPI. This driver supports imaging only.
Signed-off-by: Richard Oliver <richard.oliver@raspberrypi.com>
media: i2c: imx500: Inbuilt AI processor support
Add support for the IMX500's inbuilt AI processor. The IMX500 program
loader, AI processor firmware, DNN weights are accessed via the kernel's
firmware interface on 'open' and are transferred to the IMX500 over SPI.
Signed-off-by: Richard Oliver <richard.oliver@raspberrypi.com>
media: i2c: imx500: Enable LED during SPI transfers
The Raspberry Pi 'AI Camera' is equipped with an LED. Enable this LED
during SPI transfers to indicate to the end-user that progress is being
made during large tramsfers.
Signed-off-by: Richard Oliver <richard.oliver@raspberrypi.com>
drivers: media: imx500: Fixes for vblank control
Reduce the default/max framerate of the 2x2 binned mode to 30fps.
The current limit of 50fps can cause the sensor to produce corrupt
frames and cause missing framing events.
Also fixup the vblank control min/max/default/step paramters when
setting up.
Signed-off-by: Naushir Patuck <naush@raspberrypi.com>
drivers: media: imx500: Simplify the vblank control init
Set the VBLANK control minimum and default values to IMX500_VBLANK_MIN
unconditionally everywhere.
Remove the mode specific framerate_default parameter, it is now unused.
Signed-off-by: Naushir Patuck <naush@raspberrypi.com>
drivers: media: imx500: Enable LS correction
This correction is calibrated to approx 5000K.
Signed-off-by: Naushir Patuck <naush@raspberrypi.com>
imx500: Fix for long exposure setup
The IMX500 (unlike the IMX477/IMX708) requires two regsiters to be set
for the exposure shift value to work correctly. The additional register
write (which was missing) is for the integration time shift.
Signed-off-by: Naushir Patuck <naush@raspberrypi.com>
drivers: media: imx500: Enable sensor temperature monitoring
The register needs to be disabled before loading any firmware, otherwise
the upload fails for unknown reasons. Re-enable before starting the
sensor streaming.
Signed-off-by: Naushir Patuck <naush@raspberrypi.com>
drivers: media: imx500: Add device id readback control
Add a new custom control V4L2_CID_USER_GET_IMX500_DEVICE_ID to allow
userland to query the device id from the IMX500 sensor eeprom.
Note that this device id can only be accessed when a network firmware
has been upoloaded to the device, so cannot be cached on probe.
Signed-off-by: Naushir Patuck <naush@raspberrypi.com>
media: i2c: imx500: pm_runtime error paths
This change amends various error-paths in imx500_start_streaming() to
ensure that pm_runtime refcounts do not remain erroneously incremented
on failure.
Signed-off-by: Richard Oliver <richard.oliver@raspberrypi.com>
media: i2c: imx500: GPIO acquire/release semantics
When the imx500 driver is used as part of the 'AI Camera', the poweroff
state is never reached as the camera and gpio driver share a regulator.
By releasing the GPIOs when they are not in use, 'AI Camera' is able to
achieve a powered-down state.
Signed-off-by: Richard Oliver <richard.oliver@raspberrypi.com>
media: i2c: imx500: input tensor injection
Input tensor injection is a debug feature that allows a user-controlled
input to be passed directly to IMX500's inference engine (bypassing the
in-built ISP).
Three new custom controls are added to ENABLE_INJECTION before streaming
begins, to provide appropriate input tensors via an INPUT_TENSOR_FD, and
to provide notification of DNN results in the sensor output via
INJECTION_CMP_FRM.
Signed-off-by: Richard Oliver <richard.oliver@raspberrypi.com>
Add YAML device tree binding for the Sony IMX500 CMOS image sensor /
CNN inference engine. Also, add a MAINTAINERS entry.
Signed-off-by: Richard Oliver <richard.oliver@raspberrypi.com>
The check if the oscillator stop bit is set was reading from Control_1
register instead of the Seconds register.
This caused the Seconds register to be incorrectly changed if bit 7 of
Control_1 happens to be set.
Signed-off-by: Axel Hammarberg <axel.hammarberg@gmail.com>
In the same way that other subsystems support the setting of device
id numbers from Device Tree aliases, allow gpiochip numbers to be
derived from "gpiochip<n>" aliases.
Signed-off-by: Phil Elwell <phil@raspberrypi.com>
The DW SPI interface has a 16-bit clock divider, where the bottom bit
of the divisor must be 0. Limit how low the clock speed can go to
prevent the clock divider from being truncated, as that could lead to
a much higher clock rate than requested.
Signed-off-by: Phil Elwell <phil@raspberrypi.com>
Ensure the transmit FIFO has emptied before ending the transfer by
dropping the TX threshold to 0 when the last byte has been pushed into
the FIFO. Include a similar fix for the non-IRQ paths.
See: https://github.com/raspberrypi/linux/issues/6285
Fixes: 6014649de7 ("spi: dw: Save bandwidth with the TMOD_TO feature")
Signed-off-by: Phil Elwell <phil@raspberrypi.com>
Do an end-run around ASoC in lieu of not being able to easily find the
associated DMA controller capabilities.
Signed-off-by: Jonathan Bell <jonathan@raspberrypi.com>
There's no real need to constrain MEM access widths to 32-bit (or
narrower), as the DMAC is intelligent enough to size memory accesses
appropriately. Wider accesses are more efficient.
Similarly, MEM burst lengths don't need to be a function of DEV burst
lengths - the DMAC packs/unpacks data into/from its internal channel
FIFOs appropriately. Longer accesses are more efficient.
However, the DMAC doesn't have complete support for unaligned accesses,
and blocks are always defined in integer multiples of SRC_WIDTH, so odd
source lengths or buffer alignments will prevent wide accesses being
used, as before.
There is an implicit requirement to limit requested DEV read burst
lengths to less than the hardware's maximum configured MSIZE - otherwise
RX data will be left over at the end of a block. There is no config
register that reports this value, so the AXI burst length parameter is
used to produce a facsimile of it. Warn if such a request arrives that
doesn't respect this.
Signed-off-by: Jonathan Bell <jonathan@raspberrypi.com>
Disabling the peripheral resets controller state which has a dangerous
side-effect of disabling the DMA handshake interface while it is active.
This can cause DMA channels to hang.
The error recovery pathway will wait for DMA to stop and reset the chip
anyway, so mask further FIFO interrupts and let the transfer finish
gracefully.
Signed-off-by: Jonathan Bell <jonathan@raspberrypi.com>
TMOD_RO is the receive-only mode that doesn't require data in the
transmit FIFO in order to generate clock cycles. Using TMOD_RO when the
device doesn't care about the data sent to it saves CPU time and memory
bandwidth.
Signed-off-by: Phil Elwell <phil@raspberrypi.com>
TMOD_TO is the transmit-only mode that doesn't put data into the receive
FIFO. Using TMOD_TO when the user doesn't want the received data saves
CPU time and memory bandwidth.
Signed-off-by: Phil Elwell <phil@raspberrypi.com>
The firmware advertises its features as a string of words separated by
spaces. Ensure that feature names are only matched in their entirety.
Signed-off-by: Phil Elwell <phil@raspberrypi.com>
The snps,block-size DT property declares the maximum block size for each
channel of the dw-axi-dmac. However, the driver ignores these when
setting max_seg_size and uses MAX_BLOCK_SIZE (4096) instead.
To take advantage of the efficiencies of larger blocks, calculate the
minimum block size across all channels and use that instead.
See: https://github.com/raspberrypi/linux/issues/6256
Signed-off-by: Phil Elwell <phil@raspberrypi.com>
The Raspberry Pi RP2040 GPIO bridge is an I2C-attached device exposing
both a Tx-only SPI controller, and a GPIO controller.
Due to the relative difference in transfer rates between standard-mode
I2C and SPI, the GPIO bridge makes use of 12 MiB of non-volatile storage
to cache repeated transfers. This cache is arranged in ~8 KiB blocks and
is addressed by the MD5 digest of the data contained therein.
Optionally, this driver is able to take advantage of Raspberry Pi RP1
GPIOs to achieve faster than I2C data transfer rates.
Signed-off-by: Richard Oliver <richard.oliver@raspberrypi.com>
spi: rp2040-gpio-bridge: Add debugfs progress indicator
Useful for tracking upload progress via userspace.
Signed-off-by: Naushir Patuck <naush@raspberrypi.com>
spi: rp2040-gpio-bridge: add missing MD5 dependency
rp2040-gpio-bridge relies on the md5 crypto driver. This dependency
cannot be determined automatically as rp2040-gpio-bridge does not
use any of md5's symbols directly.
Declare a soft 'pre' dependency on md5 to ensure that it is included and
loaded before rp2040-gpio-bridge.
Signed-off-by: Richard Oliver <richard.oliver@raspberrypi.com>
spi: rp2040-gpio-bridge: fix gpiod error handling
In some circumstances, devm_gpiod_get_array_optional() can return
PTR_ERR rather than NULL to indicate failure. Handle these cases.
Signed-off-by: Richard Oliver <richard.oliver@raspberrypi.com>
spi: rp2040-gpio-bridge: probe: Cfg fast_xfer clk
Fast transfer mode requires that the first bit of data is clocked with a
rising edge. This can cause extra bits of data to be clocked on hardware
where the clock signal uses a pull-up. This change ensures that clk is
driven low before fast data transfer mode is entered.
Signed-off-by: Richard Oliver <richard.oliver@raspberrypi.com>
Offset the backend dev-nodes starting at /dev/video20
onwards to maintain backward compatibility with the
pre-upstreamed kernel driver.
Signed-off-by: Naushir Patuck <naush@raspberrypi.com>
Add helpers to set and get vchiq driver data. vchiq_set_drvdata() and
vchiq_get_drvdata() wraps dev_set_drvdata() and dev_get_drvdata()
respectively.
Signed-off-by: Umang Jain <umang.jain@ideasonboard.com>
Signed-off-by: Kieran Bingham <kieran.bingham@ideasonboard.com>
Add version 4.17.1 of the Hailo PCIe device drivers.
Sourced from https://github.com/hailo-ai/hailort-drivers/
Signed-off-by: Naushir Patuck <naush@raspberrypi.com>
drivers: media: pcie: hailo: Fix include paths
An attempt to fix the include paths - they look reasonable, but the
GitHub auto-builds fail.
Signed-off-by: Phil Elwell <phil@raspberrypi.com>
drivers: media: pci: Update Hailo accelerator device driver to v4.18.0
Sourced from https://github.com/hailo-ai/hailort-drivers/
Signed-off-by: Naushir Patuck <naush@raspberrypi.com>
drivers: media: pci: Add wrapper after removal of follow_pfn
drivers: media: pci: Fix Hailo compile warnings
Signed-off-by: Phil Elwell <phil@raspberrypi.com>
drivers: media: pci: Update Hailo accelerator device driver to v4.19
Sourced from https://github.com/hailo-ai/hailort-drivers/
Signed-off-by: Naushir Patuck <naush@raspberrypi.com>
drivers: media: pci: Update Hailo accelerator device driver to v4.20
Sourced from https://github.com/hailo-ai/hailort-drivers
Signed-off-by: Naushir Patuck <naush@raspberrypi.com>
drivers: pci: hailo: Fix kernel warning when calling find_vdma()
Calling this function without holding the mmap_read_lock causes the
kernel to throw an error message, spamming the dmesg logs when running
the Hailo hardware.
Fix it by adding the approprite lock/unlock functions around find_vdma().
Signed-off-by: Naushir Patuck <naush@raspberrypi.com>
drivers: pci: hailo: Better lock handling when calling find_vdma()
Due to possible instabilities, reduce the mmap read lock time to only
cover the call to find_vdma().
Signed-off-by: Naushir Patuck <naush@raspberrypi.com>
Pass the DRM connector name to any configured backlight
device so that userspace can associate the two items.
Ideally this should be in drm_panel, but it is bridge/panel
that creates the drm_connector and therefore knows the name.
Signed-off-by: Dave Stevenson <dave.stevenson@raspberrypi.com>
drm/bridge: panel: Ensure backlight is reachable
Ensure that the various options of modules vs builtin results
in being able to call into the backlight code.
https://github.com/raspberrypi/linux/issues/6198
Fixes: 573f8fd0ab ("drm/bridge: panel: Name an associated backlight device")
Signed-off-by: Dave Stevenson <dave.stevenson@raspberrypi.com>
The naming of backlight devices is not terribly useful for
associating a backlight controller with a display (assuming
it is attached to one).
Add a sysfs node that will return a display name that can be set
by other subsystems.
Signed-off-by: Dave Stevenson <dave.stevenson@raspberrypi.com>
Even when configured to use only gpiod CS lines, the DW SPI controller
still expects a bit to be set in the SER register, otherwise transfers
stall. For the csgpiod case, nominate bit 0 for the job.
See: https://github.com/raspberrypi/linux/issues/6159
Signed-off-by: Phil Elwell <phil@raspberrypi.com>
Reverts 8a4b2fc9c9 ("drm/bridge: tc358762: Split register programming from pre-enable to enable")
as we want the config commands sent before video starts.
Signed-off-by: Dave Stevenson <dave.stevenson@raspberrypi.com>
The autodetection of resolution/timing by the TC358762 can lead
to the display being shifted by a pixel or two.
Program the TC358762 with the requested mode timing so that
it can reproduce it accurately.
Signed-off-by: Dave Stevenson <dave.stevenson@raspberrypi.com>
"rotation" is listed as a standard property of panels in panel-common.yaml,
therefore it would be logical to process that from within the core
code should a panel driver not implement the get_orientation hook.
Call of_drm_get_panel_orientation from
drm_connector_set_orientation_from_panel to get that information.
This removes the need for any boiler-plate in panel drivers for calling
drm_connector_set_orientation_from_panel or
drm_connector_set_panel_orientation.
Signed-off-by: Dave Stevenson <dave.stevenson@raspberrypi.com>
This code:
for_each_sg(sgl, sg, sg_len, i)
num_sgs += DIV_ROUND_UP(sg_dma_len(sg), axi_block_len);
determines how many hw_desc are allocated.
If sg_dma_len(sg)=0 we don't allocate for this sgl.
However in the next loop, we will increment loop
for this case, and loop gets higher than num_sgs
and we trample memory.
Signed-off-by: Dom Cobley <popcornmix@gmail.com>
Newer versions of the DesignWare I2C block support the detection of
stuck signals, and a mechanism to recover from them. Add the required
software support to the driver.
This change was prompted by the observation that reading a single byte
from register 0 of a VEML7700 seems to cause it to issue an ACK too
early, and the controller to complain about losing arbitration. There
is a suspicion that this may be a more widespread problem, but at least
this patch prevents the bus from locking up.
See: https://github.com/raspberrypi/linux/issues/6057
Signed-off-by: Phil Elwell <phil@raspberrypi.com>
Recent Integral cards end up with corrupt sectors after a flash erase.
This covers sizes for the A2 range, which can't be differentiated from
the A1 range which might not have the same issue.
Signed-off-by: Jonathan Bell <jonathan@raspberrypi.com>
Only CMD38 with Arg=0x1 (Discard) is supported when in CQ mode, so
turn it off before issuing a non-discard erase op.
Signed-off-by: Jonathan Bell <jonathan@raspberrypi.com>
Cards with manufacture dates in 2019 and 2020 have been seen in the wild
that hang indefinitely if issued a cache flush command in CQ mode.
Signed-off-by: Jonathan Bell <jonathan@raspberrypi.com>
Samsung EVO Plus, Pro Plus and Evo Ultimate cards of this era appear to
have a broken cache-flush implementation when operating in CQ mode.
Unfortunately the cards seem to use a separate CID name string for every
variant and capacity, so nobble the cache feature for this MANFID, OEMID
and year. Turning this off seems to have negligible impact on
random-write throughput in non-CQ mode.
Signed-off-by: Jonathan Bell <jonathan@raspberrypi.com>
Posted write tracking introduced in the commit below raced with re-use
of the requests between completion and submission, potentially causing
underflow of the pending write count.
Fixes: e6c1e862b2 ("mmc: restrict posted write counts for SD cards in CQ mode")
Signed-off-by: Jonathan Bell <jonathan@raspberrypi.com>
Command Queueing requires Write Cache and Power off Notification support
from the card - but using the write cache forms a contract with the host
whereby the card expects to be told about impending power-down.
The implication is that (for performance) the card can do unsafe things
with pending write data - including reordering what gets committed to
nonvolatile storage at what time.
Exposed SD slots and platforms powered by hotpluggable means (i.e.
Raspberry Pis) can't guarantee that surprise removal won't happen.
To limit the scope for cards to invent new ways to trash filesystems,
limit pending writes to 1 (equivalent to the non-CQ behaviour).
Signed-off-by: Jonathan Bell <jonathan@raspberrypi.com>
fixup: mmc: restrict posted write counts for SD cards in CQ mode
Leaving card->max_posted_writes unintialised was a bad thing to do.
Also, cqe_enable is 1 if hsq is enabled as hsq substitutes the cqhci
implementation with its own.
Signed-off-by: Jonathan Bell <jonathan@raspberrypi.com>
Recovery claims the MMC card so the card-detect work gets significantly
delayed - leading to lots of error recovery loops that can never do
anything but fail.
Explicitly detect the card after CQE has halted and bail if it's not
there.
Also ratelimit a not-very-descriptive warning - one occurrence in dmesg
is enough to signal that something is amiss.
Signed-off-by: Jonathan Bell <jonathan@raspberrypi.com>
If the controller is being reset, then the CQE needs to be reset as well.
For removable cards, CQHCI_SSC1 must specify a polling mode (CBC=0)
otherwise it's possible that the controller stops emitting periodic
CMD13s on card removal, without raising an error status interrupt.
Signed-off-by: Jonathan Bell <jonathan@raspberrypi.com>
This gains about 8-12% sequential write speed with the fastest SD/eMMC
cards, and Class A1/A2 card sequential performance is only assured with
a 4MiB write length.
Signed-off-by: Jonathan Bell <jonathan@raspberrypi.com>
The attached PHY performs parameter validation, so the switch from HS200
to HS (before selecting HS400/HS400es) with a 200MHz clock fails to
update pad timings and results in CRC errors from the card.
Underclocking the interface is safe, so do that in the downgrade callback.
Signed-off-by: Jonathan Bell <jonathan@raspberrypi.com>
The spec allows for up to two 512-byte pages to be allocated for the
Extension Register General Info block, so allocate accordingly.
Signed-off-by: Jonathan Bell <jonathan@raspberrypi.com>
Don't attempt to turn on CQ if the other mandatory features are not
indicated as supported by the card. Also make sure that the register write
actually stuck, as some cards claim support but never report back that
the queue engine is enabled.
Signed-off-by: Jonathan Bell <jonathan@raspberrypi.com>
