The CSI-2 receiver in i.MX8ULP is almost same as i.MX8QXP/QM except
clocks and resets, so add compatible string for i.MX8ULP to handle
the difference and reuse platform data of i.MX8QXP/QM.
Reviewed-by: Frank Li <Frank.Li@nxp.com>
Reviewed-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
Signed-off-by: Guoniu Zhou <guoniu.zhou@nxp.com>
Link: https://patch.msgid.link/20251205-csi2_imx8ulp-v10-4-190cdadb20a3@nxp.com
Signed-off-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
Signed-off-by: Hans Verkuil <hverkuil+cisco@kernel.org>
Call reset_control_deassert() to explicitly release reset to make sure
reset bits are cleared since platform like i.MX8ULP can't clear reset
bits automatically.
Reviewed-by: Frank Li <Frank.Li@nxp.com>
Reviewed-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
Signed-off-by: Guoniu Zhou <guoniu.zhou@nxp.com>
Link: https://patch.msgid.link/20251205-csi2_imx8ulp-v10-3-190cdadb20a3@nxp.com
Signed-off-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
Signed-off-by: Hans Verkuil <hverkuil+cisco@kernel.org>
The ISI module on i.MX95 supports up to eight channels and four link
sources to obtain the image data for processing in its pipelines. It
can process up to eight image sources at the same time.
Add ISI basic functions support for i.MX95.
Reviewed-by: Frank Li <Frank.Li@nxp.com>
Signed-off-by: Guoniu Zhou <guoniu.zhou@nxp.com>
Reviewed-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
Link: https://patch.msgid.link/20251105-isi_imx95-v3-3-3987533cca1c@nxp.com
Signed-off-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
Signed-off-by: Hans Verkuil <hverkuil+cisco@kernel.org>
The field BLANK_PXL provides the value of the blank pixel to be inserted
in the image in case an overflow error occurs in the output buffers of
the channel. Its default value is 0xff, so no need to set again.
Besides, the field only exist in i.MX8QM/XP ISI version. Other versions
like i.MX 8M series, remove the field since it won't send data to AXI bus
when overflow error occurs and mark BLANK_PXL as reserved. i.MX9 series
use it for other purposes.
Reviewed-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
Reviewed-by: Frank Li <Frank.Li@nxp.com>
Signed-off-by: Guoniu Zhou <guoniu.zhou@nxp.com>
Link: https://patch.msgid.link/20251105-isi_imx95-v3-2-3987533cca1c@nxp.com
Signed-off-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
Signed-off-by: Hans Verkuil <hverkuil+cisco@kernel.org>
Fix a hang issue when capturing a single frame with applications like cam
in libcamera. It would hang waiting for the driver to complete the buffer,
but streaming never starts because min_queued_buffers was set to 2.
The ISI module uses a ping-pong buffer mechanism that requires two buffers
to be programmed at all times. However, when fewer than 2 user buffers are
available, the driver use internal discard buffers to fill the remaining
slot(s). Reduce minimum queued buffers from 2 to 0 allows streaming to
start without any queued buffers.
Fixes: cf21f328fc ("media: nxp: Add i.MX8 ISI driver")
Cc: stable@vger.kernel.org
Signed-off-by: Guoniu Zhou <guoniu.zhou@nxp.com>
Reviewed-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
Link: https://patch.msgid.link/20260312-isi_min_buffers-v2-1-d5ea1c79ad81@nxp.com
Signed-off-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
Signed-off-by: Hans Verkuil <hverkuil+cisco@kernel.org>
The dw100_start() function is only called from dw100_device_run(). As
both functions are not too big, move the code directly into
dw100_device_run() and drop dw100_start() to improve readability.
This patch contains no functional changes.
Signed-off-by: Stefan Klug <stefan.klug@ideasonboard.com>
Reviewed-by: Xavier Roumegue <xavier.roumegue@oss.nxp.com>
Reviewed-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
Link: https://patch.msgid.link/20260304-sklug-v6-16-topic-dw100-v3-1-dev-v5-4-1a7e1f721b50@ideasonboard.com
Signed-off-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
Signed-off-by: Hans Verkuil <hverkuil+cisco@kernel.org>
On kernels with PREEMPT_RT enabled, a "BUG: scheduling while atomic"
kernel oops occurs inside dw100_irq_handler -> vb2_buffer_done. This is
because vb2_buffer_done takes a spinlock which is not allowed within
interrupt context on PREEMPT_RT.
The first attempt to fix this was to just drop the IRQF_ONESHOT so that
the interrupt is handled threaded on PREEMPT_RT systems. This introduced
a new issue. The dw100 has an internal timeout counter that is gated by
the DW100_BUS_CTRL_AXI_MASTER_ENABLE bit. Depending on the time it takes
for the threaded handler to run and the geometry of the data being
processed it is possible to reach the timeout resulting in
DW100_INTERRUPT_STATUS_INT_ERR_TIME_OUT being set and "dw100
32e30000.dwe: Interrupt error: 0x1" errors in dmesg.
To properly fix that, split the interrupt into two halves, reset the
DW100_BUS_CTRL_AXI_MASTER_ENABLE bit in the hard interrupt handler and
do the v4l2 buffer handling in the threaded half. The IRQF_ONESHOT can
still be dropped as the interrupt gets disabled in the hard handler and
will only be reenabled on the next dw100_device_run which will not be
called before the current job has finished.
Signed-off-by: Stefan Klug <stefan.klug@ideasonboard.com>
Reviewed-by: Xavier Roumegue <xavier.roumegue@oss.nxp.com>
Reviewed-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
Link: https://patch.msgid.link/20260304-sklug-v6-16-topic-dw100-v3-1-dev-v5-3-1a7e1f721b50@ideasonboard.com
Signed-off-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
Signed-off-by: Hans Verkuil <hverkuil+cisco@kernel.org>
Implement dynamic vertex map updates by handling the
V4L2_CID_DW100_DEWARPING_16x16_VERTEX_MAP control during streaming. This
allows to implement features like dynamic zoom, pan, rotate and dewarp.
To stay compatible with the old version, updates of
V4L2_CID_DW100_DEWARPING_16x16_VERTEX_MAP are ignored during streaming
when requests are not used. Print a corresponding warning once.
Signed-off-by: Stefan Klug <stefan.klug@ideasonboard.com>
Reviewed-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
Link: https://patch.msgid.link/20260304-sklug-v6-16-topic-dw100-v3-1-dev-v5-2-1a7e1f721b50@ideasonboard.com
Signed-off-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
Signed-off-by: Hans Verkuil <hverkuil+cisco@kernel.org>
The dw100 dewarper hardware present on the NXP i.MX8MP allows very
flexible dewarping using a freely configurable vertex map. Aside from
lens dewarping the vertex map can be used to implement things like
arbitrary zoom, pan and rotation. The current driver supports setting
that vertex map before calling VIDIOC_STREAMON.
To control above mentioned features during streaming it is necessary to
update the vertex map dynamically. To do that in a race free manner V4L2
requests support is required. Add V4L2 requests support to prepare for
dynamic vertex map updates.
Signed-off-by: Stefan Klug <stefan.klug@ideasonboard.com>
Reviewed-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
Link: https://patch.msgid.link/20260304-sklug-v6-16-topic-dw100-v3-1-dev-v5-1-1a7e1f721b50@ideasonboard.com
Signed-off-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
Signed-off-by: Hans Verkuil <hverkuil+cisco@kernel.org>
Add dev_err_probe() to all error branches in the *async_register() helpers
to provide clearer diagnostic information when device registration fails.
Drop the explicit error message after returning from
mipi_csis_async_register(), as the error is already reported by this
helper.
Signed-off-by: Frank Li <Frank.Li@nxp.com>
Reviewed-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
Link: https://patch.msgid.link/20260121-cam_cleanup-v5-1-01d1ab38db9d@nxp.com
Signed-off-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
Signed-off-by: Hans Verkuil <hverkuil+cisco@kernel.org>
Support the upgraded JPEG encoder v1 found on i.MX952 SoC.
Detect the encoder hardware version via the version register.
The v1 encoder uses an expanded descriptor format that allows all
encoding parameters, including JPEG quality, to be configured directly
in the descriptor.
This removes the manual register-based configuration step required by v0
and reduces the interrupt count from two to one per frame.
V0 encoding flow:
1. Write quality to registers -> trigger config interrupt
2. Start encoding -> trigger completion interrupt
V1 encoding flow:
1. Configure descriptor with all parameters including quality
2. Start encoding -> trigger completion interrupt
Reviewed-by: Frank Li <Frank.Li@nxp.com>
Signed-off-by: Ming Qian <ming.qian@oss.nxp.com>
Signed-off-by: Nicolas Dufresne <nicolas.dufresne@collabora.com>
Signed-off-by: Hans Verkuil <hverkuil+cisco@kernel.org>
Introduce mxc_jpeg_enc_ops function pointer structure to abstract
encoder configuration differences between hardware versions.
Extract the existing two-phase manual configuration into dedicated
functions (enter_config_mode/exit_config_mode) for v0 hardware.
Add setup_desc callback placeholder for future v1 hardware support
which will use descriptor-based configuration.
Store the extended sequential mode flag in the context to avoid
recalculating it during configuration phases.
No functional change.
Reviewed-by: Frank Li <Frank.Li@nxp.com>
Signed-off-by: Ming Qian <ming.qian@oss.nxp.com>
Signed-off-by: Nicolas Dufresne <nicolas.dufresne@collabora.com>
Signed-off-by: Hans Verkuil <hverkuil+cisco@kernel.org>
Use devm_pm_runtime_enable() to simplify probe and exit paths.
No functional change.
Signed-off-by: Ming Qian <ming.qian@oss.nxp.com>
Reviewed-by: Nicolas Dufresne <nicolas.dufresne@collabora.com>
Signed-off-by: Nicolas Dufresne <nicolas.dufresne@collabora.com>
Signed-off-by: Hans Verkuil <hverkuil+cisco@kernel.org>
Use memset() to zero-initialize desc and cfg_desc structures instead of
assigning individual fields to zero. This is cleaner and ensures all
descriptor fields are properly initialized.
No functional change.
Reviewed-by: Frank Li <Frank.Li@nxp.com>
Signed-off-by: Ming Qian <ming.qian@oss.nxp.com>
Signed-off-by: Nicolas Dufresne <nicolas.dufresne@collabora.com>
Signed-off-by: Hans Verkuil <hverkuil+cisco@kernel.org>
This converts some of the visually simpler cases that have been split
over multiple lines. I only did the ones that are easy to verify the
resulting diff by having just that final GFP_KERNEL argument on the next
line.
Somebody should probably do a proper coccinelle script for this, but for
me the trivial script actually resulted in an assertion failure in the
middle of the script. I probably had made it a bit _too_ trivial.
So after fighting that far a while I decided to just do some of the
syntactically simpler cases with variations of the previous 'sed'
scripts.
The more syntactically complex multi-line cases would mostly really want
whitespace cleanup anyway.
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
This was done entirely with mindless brute force, using
git grep -l '\<k[vmz]*alloc_objs*(.*, GFP_KERNEL)' |
xargs sed -i 's/\(alloc_objs*(.*\), GFP_KERNEL)/\1)/'
to convert the new alloc_obj() users that had a simple GFP_KERNEL
argument to just drop that argument.
Note that due to the extreme simplicity of the scripting, any slightly
more complex cases spread over multiple lines would not be triggered:
they definitely exist, but this covers the vast bulk of the cases, and
the resulting diff is also then easier to check automatically.
For the same reason the 'flex' versions will be done as a separate
conversion.
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
This is the result of running the Coccinelle script from
scripts/coccinelle/api/kmalloc_objs.cocci. The script is designed to
avoid scalar types (which need careful case-by-case checking), and
instead replace kmalloc-family calls that allocate struct or union
object instances:
Single allocations: kmalloc(sizeof(TYPE), ...)
are replaced with: kmalloc_obj(TYPE, ...)
Array allocations: kmalloc_array(COUNT, sizeof(TYPE), ...)
are replaced with: kmalloc_objs(TYPE, COUNT, ...)
Flex array allocations: kmalloc(struct_size(PTR, FAM, COUNT), ...)
are replaced with: kmalloc_flex(*PTR, FAM, COUNT, ...)
(where TYPE may also be *VAR)
The resulting allocations no longer return "void *", instead returning
"TYPE *".
Signed-off-by: Kees Cook <kees@kernel.org>
Use devm_pm_runtime_enable() to simplify code. Change to use
dev_err_probe() because previous goto change to return.
No functional change.
Signed-off-by: Frank Li <Frank.Li@nxp.com>
Reviewed-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
Link: https://patch.msgid.link/20260116-cam_cleanup-v4-2-29ce01640443@nxp.com
Signed-off-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
Signed-off-by: Hans Verkuil <hverkuil+cisco@kernel.org>
Use dev_err_probe() to simplify the code. Drop the explicit error message
after returning from imx8mq_mipi_csi_parse_dt(), as the error is already
reported by this helper.
No functional change.
Reviewed-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
Reviewed-by: Alexander Stein <alexander.stein@ew.tq-group.com>
Signed-off-by: Frank Li <Frank.Li@nxp.com>
Link: https://patch.msgid.link/20260116-cam_cleanup-v4-1-29ce01640443@nxp.com
Signed-off-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
Signed-off-by: Hans Verkuil <hverkuil+cisco@kernel.org>
The imx8-isi driver has a module alias named "ISI". This is not
required, as there is no reason to load this module through an alias:
the device is probed through OF, and the module has never been named
"ISI". Drop the alias.
Suggested-by: Johan Hovold <johan@kernel.org>
Reviewed-by: Johan Hovold <johan@kernel.org>
Reviewed-by: Frank Li <Frank.Li@nxp.com>
Link: https://patch.msgid.link/20251102234438.8022-1-laurent.pinchart@ideasonboard.com
Signed-off-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
Signed-off-by: Hans Verkuil <hverkuil+cisco@kernel.org>
Add support for optional allocation of bitstream descriptors from SRAM
instead of DRAM. In case the encoder/decoder DT node contains 'sram'
property which points to 'mmio-sram', the driver will attempt to use
the SRAM instead of DRAM for descriptor allocation, which might improve
performance.
This also helps on i.MX95 rev.A with sporadic SLOTn_STATUS IMG_RD_ERR
bit 11 being triggered during JPEG encoding, which is caused by a bug
fixed on later SoC revisions. The bug occurs less often when using the
SRAM for descriptor storage, but is not entirely mitigated. The following
pipeline triggers the bug when descriptors get allocated from DRAM, the
pipeline often hangs after a few seconds and the encoder driver indicates
"timeout, cancel it":
gst-launch-1.0 videotestsrc ! \
video/x-raw,width=256,height=256,format=YUY2 ! \
queue ! v4l2jpegenc ! queue ! fakesink
Tested-by: Ming Qian <ming.qian@oss.nxp.com>
Signed-off-by: Marek Vasut <marek.vasut@mailbox.org>
Signed-off-by: Nicolas Dufresne <nicolas.dufresne@collabora.com>
Signed-off-by: Hans Verkuil <hverkuil+cisco@kernel.org>
Call on v4l2_get_active_data_lanes() to check if the driver reports that
the number of lanes actively used by the MIPI CSI transmitter differs to
the maximum defined in device tree.
If the number of active data lanes reported by the driver is invalid,
catch and return the error. If the operation is not supported, fall back
to the number of allowed data lanes.
Signed-off-by: Isaac Scott <isaac.scott@ideasonboard.com>
Signed-off-by: Sakari Ailus <sakari.ailus@linux.intel.com>
Signed-off-by: Hans Verkuil <hverkuil+cisco@kernel.org>
Add the num_data_lanes field to the mipi_csis_device struct, and set it
equal to csis->bus.num_data_lanes. This is in preparation to support
cases when the data lanes actively used differs from the maximum
supported data lanes.
No functional changes intended by this commit.
Reviewed-by: Frank Li <Frank.Li@nxp.com>
Reviewed-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
Signed-off-by: Isaac Scott <isaac.scott@ideasonboard.com>
Signed-off-by: Sakari Ailus <sakari.ailus@linux.intel.com>
Signed-off-by: Hans Verkuil <hverkuil+cisco@kernel.org>
The number of data lanes is already printed as part of
mipi_csis_async_register(), making the first part of this print
redundant. Remove the redundant print, and move the debug print for
clock frequency to mipi_csis_parse_dt().
Reviewed-by: Frank Li <Frank.Li@nxp.com>
Reviewed-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
Signed-off-by: Isaac Scott <isaac.scott@ideasonboard.com>
Signed-off-by: Sakari Ailus <sakari.ailus@linux.intel.com>
Signed-off-by: Hans Verkuil <hverkuil+cisco@kernel.org>
The driver has never supported anything but OF probing so drop the
unused platform module alias.
Signed-off-by: Johan Hovold <johan@kernel.org>
Reviewed-by: Frank Li <Frank.Li@nxp.com>
Reviewed-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
Acked-by: Martin Kepplinger-Novakovic <martink@posteo.de>
Link: https://patch.msgid.link/20251017060051.8204-3-johan@kernel.org
Signed-off-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
Signed-off-by: Hans Verkuil <hverkuil+cisco@kernel.org>
The driver has never supported anything but OF probing so drop the
unused platform module alias.
Signed-off-by: Johan Hovold <johan@kernel.org>
Reviewed-by: Frank Li <Frank.Li@nxp.com>
Acked-by: Rui Miguel Silva <rui.silva@linaro.org>
Reviewed-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
Link: https://patch.msgid.link/20251017060051.8204-2-johan@kernel.org
Signed-off-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
Signed-off-by: Hans Verkuil <hverkuil+cisco@kernel.org>
The driver does not support anything but OF probe since commit
f0e7cfbb43 ("media: imx: imx7_mipi_csis: Add i.MX8MM support") so
drop the unused platform module alias.
Signed-off-by: Johan Hovold <johan@kernel.org>
Reviewed-by: Frank Li <Frank.Li@nxp.com>
Acked-by: Rui Miguel Silva <rui.silva@linaro.org>
Reviewed-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
Link: https://patch.msgid.link/20251017060051.8204-1-johan@kernel.org
Signed-off-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
Signed-off-by: Hans Verkuil <hverkuil+cisco@kernel.org>
The ISI module on i.MX91 implements only one channel and one parallel
camera input. As no input source selection is required, gasket ops are
unnecessary.
Reviewed-by: Frank Li <Frank.Li@nxp.com>
Signed-off-by: Guoniu Zhou <guoniu.zhou@nxp.com>
Reviewed-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
Link: https://patch.msgid.link/20250905-isi_imx93-v2-5-37db5f768c57@nxp.com
Signed-off-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
Signed-off-by: Hans Verkuil <hverkuil+cisco@kernel.org>
Sort platform data in the order of compatible strings in of_match table
to make it more convenient to read.
No functions changed.
Reviewed-by: Frank Li <Frank.Li@nxp.com>
Signed-off-by: Guoniu Zhou <guoniu.zhou@nxp.com>
Reviewed-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
Link: https://patch.msgid.link/20250905-isi_imx93-v2-4-37db5f768c57@nxp.com
Signed-off-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
Signed-off-by: Hans Verkuil <hverkuil+cisco@kernel.org>
The ISI module on i.MX93 implements one camera input which can be
connected to either of MIPI CSI-2 or parallel camera. The source
type can be selected by setting camera mux control register.
Signed-off-by: Alice Yuan <alice.yuan@nxp.com>
Reviewed-by: Frank Li <Frank.Li@nxp.com>
Signed-off-by: Guoniu Zhou <guoniu.zhou@nxp.com>
Reviewed-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
Link: https://patch.msgid.link/20250905-isi_imx93-v2-3-37db5f768c57@nxp.com
Signed-off-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
Signed-off-by: Hans Verkuil <hverkuil+cisco@kernel.org>
Make code more readable and easier to maintain by using the FIELD_PREP
and GENMASK() macros.
While at it, replace spaces with tabs for macro indentation.
No functional changes.
Reviewed-by: Frank Li <Frank.Li@nxp.com>
Signed-off-by: Guoniu Zhou <guoniu.zhou@nxp.com>
Link: https://patch.msgid.link/20250905-isi_imx93-v2-2-37db5f768c57@nxp.com
Reviewed-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
Signed-off-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
Signed-off-by: Hans Verkuil <hverkuil+cisco@kernel.org>
The v4l2_m2m_buf_copy_metadata() function takes a boolean
copy_frame_flags argument. When true, it causes the function to copy the
V4L2_BUF_FLAG_KEYFRAME, V4L2_BUF_FLAG_BFRAME and V4L2_BUF_FLAG_PFRAME
flags from the output buffer to the capture buffer.
There is no use cases in any upstream driver for copying the flags.
KEY/P/B frames are properties of the bitstream buffer in some formats.
Once decoded, this is no longer a property of the video frame and should
be discarded.
It was considered useful to know if an uncompressed frame was decoded
from a KEY/P/B compressed frame, and to preserve that information if
that same uncompressed frame was passed through another M2M device (e.g.
a scaler). However, the V4L2 documentation makes it clear that the flags
are meant for compressed frames only.
Drop the copy_frame_flags argument from v4l2_m2m_buf_copy_metadata().
The change to drivers was performed with the following Coccinelle
semantic patch:
@@
expression src;
expression dst;
expression flag;
@@
- v4l2_m2m_buf_copy_metadata(src, dst, flag);
+ v4l2_m2m_buf_copy_metadata(src, dst);
include/media/v4l2-mem2mem.h and drivers/media/v4l2-core/v4l2-mem2mem.c
have been updated manually.
Signed-off-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
Reviewed-by: Philipp Zabel <p.zabel@pengutronix.de>
Reviewed-by: Benjamin Gaignard <benjamin.gaignard@collabora.com>
Signed-off-by: Hans Verkuil <hverkuil+cisco@kernel.org>
The %pe format specifier is designed to print error pointers. It prints
a symbolic error name (eg. -EINVAL) and it makes the code simpler by
omitting PTR_ERR().
This patch fixes this cocci report:
./platform/nxp/imx8mq-mipi-csi2.c:422:23-30: WARNING: Consider using %pe to print PTR_ERR()
Signed-off-by: Ricardo Ribalda <ribalda@chromium.org>
Reviewed-by: Martin Kepplinger-Novakovic <martink@posteo.de>
Acked-by: Sakari Ailus <sakari.ailus@linux.intel.com>
Signed-off-by: Hans Verkuil <hverkuil+cisco@kernel.org>
The v4l2_m2m_get_vq() function never returns NULL.
In the set format handler, the check may have been intended to catch
invalid format types, but that's not needed as the V4L2 core picks the
appropriate VIDIOC_S_FMT ioctl handler based on the format type, so the
type can't be incorrect.
In the get format handler, the return value is not used for any purpose
other than the NULL check, which was therefore probably intended to
catch invalid format types. That's not needed for the same reason as in
the set format handler.
Drop the unneeded return value checks and, as the function has no side
effect, the unneeded function call as well.
Signed-off-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
Signed-off-by: Hans Verkuil <hverkuil+cisco@kernel.org>
The v4l2_m2m_get_vq() function never returns NULL. The check may have
been intended to catch invalid format types, but that's not needed as
the V4L2 core picks the appropriate VIDIOC_S_FMT ioctl handler based on
the format type, so the type can't be incorrect. Drop the unneeded
return value check.
Signed-off-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
Reviewed-by: Frank Li <Frank.Li@nxp.com>
Signed-off-by: Hans Verkuil <hverkuil+cisco@kernel.org>
The v4l2_m2m_get_vq() function never returns NULL.
In the set format handler, the check may have been intended to catch
invalid format types, but that's not needed as the V4L2 core picks the
appropriate VIDIOC_S_FMT ioctl handler based on the format type, so the
type can't be incorrect.
In the get format handler, the return value is not used for any purpose
other than the NULL check, which was therefore probably intended to
catch invalid format types. That's not needed for the same reason as in
the set format handler.
Drop the unneeded return value checks and, as the function has no side
effect, the unneeded function call as well.
Signed-off-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
Reviewed-by: Frank Li <Frank.Li@nxp.com>
Reviewed-by: Philipp Zabel <p.zabel@pengutronix.de>
Signed-off-by: Hans Verkuil <hverkuil+cisco@kernel.org>
The v4l2_m2m_get_vq() function never returns NULL. The check may have
been intended to catch invalid format types, but that's not needed as
the V4L2 core picks the appropriate VIDIOC_S_FMT ioctl handler based on
the format type, so the type can't be incorrect. Drop the unneeded
return value check.
Signed-off-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
Reviewed-by: Frank Li <Frank.Li@nxp.com>
Signed-off-by: Hans Verkuil <hverkuil+cisco@kernel.org>
The v4l2_m2m_get_vq() function never returns NULL.
In the set format handler, the check may have been intended to catch
invalid format types, but that's not needed as the V4L2 core picks the
appropriate VIDIOC_S_FMT ioctl handler based on the format type, so the
type can't be incorrect.
In the get format handler, the return value is not used for any purpose
other than the NULL check, which was therefore probably intended to
catch invalid format types. That's not needed for the same reason as in
the set format handler.
Drop the unneeded return value checks and, as the function has no side
effect, the unneeded function call as well.
Signed-off-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
Reviewed-by: Stefan Klug <stefan.klug@ideasonboard.com>
Signed-off-by: Hans Verkuil <hverkuil+cisco@kernel.org>
There's no need to power up the device when userspace opens it. Delay
the operation until streamon.
Link: https://lore.kernel.org/r/20250821135123.29462-2-laurent.pinchart@ideasonboard.com
Signed-off-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
Reviewed-by: Guoniu Zhou <guoniu.zhou@nxp.com>
Tested-by: Guoniu Zhou <guoniu.zhou@nxp.com>
Reviewed-by: Frank Li <Frank.Li@nxp.com>
Signed-off-by: Hans Verkuil <hverkuil+cisco@kernel.org>
Add suspend/resume support for ISI when work at memory to memory mode.
Link: https://lore.kernel.org/r/20250815-isi_m2m-v2-1-32e3720880cc@nxp.com
Signed-off-by: Guoniu Zhou <guoniu.zhou@nxp.com>
Reviewed-by: Frank Li <Frank.Li@nxp.com>
Reviewed-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
Signed-off-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
Signed-off-by: Hans Verkuil <hverkuil+cisco@kernel.org>
The bypass argument to the mxc_isi_channel_chain() function is unused.
Drop it.
Link: https://lore.kernel.org/r/20250813225501.20762-1-laurent.pinchart@ideasonboard.com
Signed-off-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
Reviewed-by: Frank Li <Frank.Li@nxp.com>
Signed-off-by: Hans Verkuil <hverkuil+cisco@kernel.org>
The mxc_isi_video.is_streaming field is used to track the streaming
status of the video device. The same information is also tracked by the
videobuf2 queue. Drop the is_streaming field, and check the queue
streaming status instead.
Link: https://lore.kernel.org/r/20250813212451.22140-3-laurent.pinchart@ideasonboard.com
Signed-off-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
Tested-by: Richard Leitner <richard.leitner@linux.dev> # i.MX8MP
Signed-off-by: Hans Verkuil <hverkuil+cisco@kernel.org>
Some CSIS instances feature more than one output channel. Update
register macros accordingly, parse the number of channels from the
device tree, and update register dumps and event counters to log
per-channel data.
Support for routing virtual channels and data types to output channels
through the subdev internal routing API will come later.
Link: https://lore.kernel.org/r/20250822002734.23516-13-laurent.pinchart@ideasonboard.com
Signed-off-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
Reviewed-by: Stefan Klug <stefan.klug@ideasonboard.com>
Signed-off-by: Hans Verkuil <hverkuil+cisco@kernel.org>
The imx-mipi-csis driver sets the rate of the wrap clock to the value
specified in the device tree's "clock-frequency" property, and defaults
to 166 MHz otherwise. This is a historical mistake, as clock rate
selection should have been left to the assigned-clock-rates property.
Honouring the clock-frequency property can't be removed without breaking
backwards compatibility, and the corresponding code isn't very
intrusive. The 166 MHz default, on the other hand, prevents
configuration of the clock rate through assigned-clock-rates, as the
driver immediately overwrites the rate. This behaviour is confusing and
has cost debugging time.
There is little value in a 166 MHz default. All mainline device tree
sources that enable the CSIS specify a clock-frequency explicitly, and
the default wrap clock configuration on supported platforms is at least
as high as 166 MHz. Drop the default, and only set the clock rate
manually when the clock-frequency property is specified.
Link: https://lore.kernel.org/r/20250822002734.23516-10-laurent.pinchart@ideasonboard.com
Signed-off-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
Reviewed-by: Frank Li <Frank.Li@nxp.com>
Signed-off-by: Hans Verkuil <hverkuil+cisco@kernel.org>
The CSIS has per-line start of transmission error interrupts. Log them
all, instead of only the first data lane.
Link: https://lore.kernel.org/r/20250822002734.23516-9-laurent.pinchart@ideasonboard.com
Signed-off-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
Reviewed-by: Alexander Stein <alexander.stein@ew.tq-group.com>
Reviewed-by: Frank Li <Frank.Li@nxp.com>
Signed-off-by: Hans Verkuil <hverkuil+cisco@kernel.org>
