Two new debugfs interfaces are implemented:

- gpu_usage: exposes the total runtime since boot of each
of the 5 scheduling queues available at V3D (BIN, RENDER,
CSD, TFU, CACHE_CLEAN). So if the interface is queried at
two different points of time the usage percentage of each
of the queues can be calculated.

- gpu_pid_usage: exposes the same information but to the
level of detail of each process using the V3D driver. The
runtime for process using the driver is stored. So the
percentages of usage by PID can be calculated with
measures at different timestamps.

The storage of gpu_pid_usage stats is only done if
the debugfs interface is polled during the last 70 seconds.
If a process does not submit a GPU job during last 70
seconds its stats will also be purged.

Signed-off-by: Jose Maria Casanova Crespo <jmcasanova@igalia.com>

It has been observed that edge events can be lost when GPIO edges occur
close to each other. Investigation suggests this is due to a hardware
bug, although no mechanism has been identified.

Work around the event loss by moving the IRQ acknowledgement into the
main ISR, adding missing events by explicit level-change detection.

See: https://forums.raspberrypi.com/viewtopic.php?t=350295



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

The XFRM_INTERFACE option enables "a virtual interface to route IPsec
traffic". Add that as a module, enabling statistics and "sub policy"
at the same time.

See: https://github.com/raspberrypi/linux/issues/5446



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

With UART numbering from DT aliases re-enabled, add aliases for the
additional BCM2711 UARTs. Also use the opportunity to remove some
DTS duplication.

See: https://forums.raspberrypi.com/viewtopic.php?t=347868



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

This reverts commit c2fa32a8dae4c4b2638c9f4de5e398e98460e693.

Consistent, logical UART numbering is desirable, so remove the
effective revert.

See: https://forums.raspberrypi.com/viewtopic.php?t=347868



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

Now that the kernel controls the onboard Bluetooth initialisation by
default, the miniuart-bt overlay needs updating to match.

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

Change the base Device Tree files so that by default the kernel is
responsible for initialisation of the onboard Bluetooth modems.
Use dtparam=krnbt=off to revert to the old behaviour.

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

The kernel needs to recognise the default BDADDRs used by the Bluetooth
modems, so add a few more that we care about.

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

The kernel Bluetooth framework understands that devices may not
be programmed with valid Bluetooth addresses. It also has the ability
to override a Bluetooth address with the value of the local-bd-address
DT property, but it ignores the validity of the existing address when
doing so.

Add a new boolean property, fallback-bd-address, which indicates that
the given local-bd-address property should only be used if the device
does not already have a valid BDADDR.

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

The BCM2835 mini-UART has no modem status interrupt, causing all
transmission to stop, never to use, if a speed change ever happens
while the CTS signal is high.

Add a simple polling mechanism in order to allow recovery in that
situation.

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

Pi 0-3 have no deep colour support and only 24bpp output,
so max_bpc should remain as 8.

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

The driver is only reading a u8, so change the overlay to match.

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

There is no DT binding for emc2305 as mainline are still
discussing how to do a generic fan binding.
The 5.15 driver was reading the "emc2305," properties
"cooling-levels", "pwm-max", "pwm-min", and "pwm-channel" as u8.
The overlay was writing them as u16 (;) so it was working.

The 6.1 driver was reading as u32, which failed as there is
insufficient data.

As this is all downstream only, revert to u8 to match 5.15.

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

Sinc [1] uaccess_with_memcpy.c uses __memcpy instead of memcpy. Make
the optimised memcpy available as __memcpy as well to avoid linkage
failures.

[1] ceac10c8 ("ARM: 9290/1: uaccess: Fix KASAN false-positives")

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

The i2c-pwm-pca9685a overlay was fixed to i2c-1. Add overrides to allow
it to be assigned to alternate buses.

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

The i2c-mux overlay was fixed to i2c-1. Add overrides to allow
it to be assigned to alternate buses.

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

There is an off-by-one error in the default brightness for the PWM backlight
in the MIPI DBI SPI overlay that produces the following message in the
kernel logs:

    pwm-backlight backlight_pwm: invalid default brightness level: 16, using 15

The value is 0-based, so the max brightness is 15, not 16.

Signed-off-by: David Lechner <david@lechnology.com>

They come in varying sizes, but all have the same MCU for
power control and touch controller.

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

Adds support for the Waveshare DSI touchscreens.

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

The interrupt line from the touch controller is not necessarily
connected to the SoC, so add the option to poll for touch info.

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

Waveshare sell a range of DSI panels of varying sizes, all
using a common MCU to control the panel and backlight.

Add a panel driver that supports these panels.

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

Commit 46ef9d4e ("hwmon: emc2305: fixups for driver submitted to
mailing lists") missed adding the call to thermal_of_cooling_device_register
required to configure any cooling maps for the device, hence stopping it
from actually ever changing speed.

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

The 640x480 mode uses a special binning mode for high framerate operation where
the pixel rate is effectively doubled. Account for this when setting up the
pixel clock rate, and applying the vblank and exposure controls.

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

This reverts commit 947ba6e85ea973b53e2f8d6860b191c0257e04fb.

Since [1], the clock driver has automatically rounded up the
UART clock frequency, so this patch is no longer needed.

[1] f690a4d7 ("clk: bcm2835: Round UART input clock up")

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

We believe the OOM issue with MGLRU on 32-bit kernel
only affects Pi4 which uses CONFIG_VMSPLIT_3G.

Pi0-3 which use CONFIG_VMSPLIT_2G is expected not to
suffer from this OOM issue.

So lets enable MGLRU by default for these users,
who many benefit from the advantages it has.

See: https://github.com/raspberrypi/linux/issues/5395


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

Add CHARGER_GPIO module into default kernel config

Signed-off-by: Clarke X <1014930533@qq.com>

Add gpio-charger overlay for charger via gpio.

Signed-off-by: Clarke X <1014930533@qq.com>

Add pcf857x overlay with related documents.

Signed-off-by: Clarke X <1014930533@qq.com>

Complete USB Gadget Support to bcmrpi3_defconfig

Cross-referenced with bcm2711_defconfig to include the same USB gadgets. Adds support for the Pi 3 and derivative devices (BCM2837) such as the Pi Zero 2 W.

See: https://github.com/raspberrypi/linux/pull/5427

Since there is now a dedicated dts file for the rev1 Model B (the only
Pi to drive the primary camera with i2c1), move the creation of the
i2c_arm, i2c_vc and i2c labels, aliases and overrides into the base dts
files.

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

The patch adding image encode (JPEG) to the driver missed adding
the alignment constraint for V4L2_PIX_FMT_RGBA32, which meant
it ended up giving a stride and size of 0.

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

The kernel's time unit of jiffies should be stored as an unsigned long
value. Storing it as an unsigned int, as gpio-fsm did, leads to
truncation and malfunction when the kernel is built for a 64-bit
platform.

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

media_pipeline_start and media_pipeline_stop now validate that
the pipeline is being started and stopped with the same pipe
and pad handles.
When running with embedded metadata (eg imx477 and imx708), the
start typically happens from the metadata pad, whilst stop is
always from the image pad.

Always pass the image pad to media_pipeline_start to ensure
that the calls are balanced.

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

Create a cluster for the HVLIP and VFLIP controls so they are treated
as a single composite control.

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

Switch the system clock name from "xclk" to "inclk".
Use lower case lables for all regulator names.

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

Switch the system clock name from "xclk" to "inclk".
Use lower case lables for all regulator names.

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

Replace the existing imx708.yaml file with sony,imx708.yaml that follows
the latest devicetree conventions for camera sensors.

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

This commit addresses vaious tidy-ups requesed for upstreaming the
IMX708 driver. Notably:

- Remove #define IMX708_NUM_SUPPLIES and use ARRAY_SIZE() directly
- Use dev_err_probe where possible in imx708_probe()
- Fix error handling paths in imx708_probe()

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

Remove unused and redundant control fields from the state structure.

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

Add a parameter to change the sensor device CSI-2 link frequency to
one of the following values: 450Mhz (default), 447Mhz, or 453Mhz.

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