linux.git/Documentation/driver-api/media, branch v6.7

media: Documentation: ccs: Fix spelling mistake

2023-10-12T07:22:28+00:00

Correct the wrong spelling of 'exposes' in the binner section.

Signed-off-by: Umang Jain 
Signed-off-by: Sakari Ailus 
Signed-off-by: Hans Verkuil

media: Documentation: Split camera sensor documentation

2023-10-07T08:55:48+00:00

Split camera sensor documentation into user and kernel portions. This
should make it easier for the user space developers to find the relevant
documentation.

Also add a list of exemplary drivers and add imx219 driver to it, besides
those that were already mentioned.

Signed-off-by: Sakari Ailus 
Reviewed-by: Laurent Pinchart 
Reviewed-by: Jacopo Mondi 
Signed-off-by: Hans Verkuil

media: remove the old videobuf framework

2023-09-27T07:40:01+00:00

The last driver that still used this old framework has been converted
to the videobuf2 framework. So it is now time to delete the old videobuf
code.

Signed-off-by: Hans Verkuil 
Reviewed-by: Hans de Goede

Documentation: media: camera-sensor: Improve power management documentation

2023-09-27T07:39:59+00:00

Camera sensor drivers are highly subject to cargo cult programming, with
back practices being copied from old to new drivers. In particular, many
drivers implement system and runtime PM incorrectly. As a first step
towards fixing this situation, refactor and expand the power management
documentation to detail correct usage of system and runtime PM.

Signed-off-by: Laurent Pinchart 
Signed-off-by: Sakari Ailus 
Signed-off-by: Hans Verkuil

Documentation: media: camera-sensor: Move power management section

2023-09-27T07:39:59+00:00

Move the power management section up, just after clocks, as it relates
to internal system resources and not features exposed to applications.
The text itself is otherwise unchanged.

Signed-off-by: Laurent Pinchart 
Signed-off-by: Sakari Ailus 
Signed-off-by: Hans Verkuil

Documentation: media: camera-sensor: Use link to upstream DT bindings

2023-09-27T07:39:59+00:00

The Documentation/devicetree/bindings/clock/clock-bindings.txt file is
deprecated and points to clock-bindings.yaml, which is not hosted in the
kernel source tree. Use an HTTPS link to refer to the YAML binding
document.

While at it, drop "currently" from the paragraph, as the whole file
refers to the current recommended practices except where explicitly
noted.

Signed-off-by: Laurent Pinchart 
Signed-off-by: Sakari Ailus 
Signed-off-by: Hans Verkuil

Documentation: media: camera-sensor: Fix typo and vocabulary selection

2023-09-27T07:39:59+00:00

Drop an unneeded double colon, and use 'shall' instead of 'must' for
consistency with the rest of the file.

Signed-off-by: Laurent Pinchart 
Signed-off-by: Sakari Ailus 
Signed-off-by: Hans Verkuil

media: Documentation: Mention CCS tools

2023-09-27T07:39:57+00:00

CCS tools is a useful set of programs and libraries for working with CCS
static data. Do mention that in context of the CCS driver.

Signed-off-by: Sakari Ailus 
Reviewed-by: Laurent Pinchart 
Signed-off-by: Hans Verkuil

Merge tag 'media/v6.6-1' of git://git.kernel.org/pub/scm/linux/kernel/git/mchehab/linux-media

2023-09-01T19:21:32+00:00

Pull media updates from Mauro Carvalho Chehab:

 - new i2c drivers: ds90ub913, ds90ub953, ds90ub960, dw9719, ds90ub913

 - new Intel IVSC MEI drivers

 - some Mediatek platform drivers were moved to a common location

 - Intel atomisp2 driver is now working with the main ov2680 driver. Due
   to that, the atomisp2 ov2680 staging one was removed

 - the bttv driver was finally converted to videobuf2 framework. This
   was the last one upstream using videobuf version 1 core. We'll likely
   remove the old videobuf framework on 6.7

 - lots of improvements at atomisp driver: it now works with normal I2C
   sensors. Several compile-mode dependecies to select between ISP2400
   and ISP2401 are now solved in runtime

 - a new ipu-bridge logic was added to work with IVSC MEI drivers

 - venus driver gained better support for new VPU versions

 - the v4l core async framework has gained lots of improvements and
   cleanups

 - lots of other cleanups, improvements and driver fixes

* tag 'media/v6.6-1' of git://git.kernel.org/pub/scm/linux/kernel/git/mchehab/linux-media: (358 commits)
  media: ivsc: Add ACPI dependency
  media: bttv: convert to vb2
  media: bttv: use audio defaults for winfast2000
  media: bttv: refactor bttv_set_dma()
  media: bttv: move vbi_skip/vbi_count out of buffer
  media: bttv: remove crop info from bttv_buffer
  media: bttv: remove tvnorm field from bttv_buffer
  media: bttv: remove format field from bttv_buffer
  media: bttv: move do_crop flag out of bttv_fh
  media: bttv: copy vbi_fmt from bttv_fh
  media: bttv: copy vid fmt/width/height from fh
  media: bttv: radio use v4l2_fh instead of bttv_fh
  media: bttv: replace BUG with WARN_ON
  media: bttv: use video_drvdata to get bttv
  media: i2c: rdacm21: Fix uninitialized value
  media: coda: Remove duplicated include
  media: vivid: fix the racy dev->radio_tx_rds_owner
  media: i2c: ccs: Check rules is non-NULL
  media: i2c: ds90ub960: Fix PLL config for 1200 MHz CSI rate
  media: i2c: ds90ub953: Fix use of uninitialized variables
  ...

media: Add MIPI CCI register access helper functions

2023-08-10T05:58:38+00:00

The CSI2 specification specifies a standard method to access camera sensor
registers called "Camera Control Interface (CCI)".

This uses either 8 or 16 bit (big-endian wire order) register addresses
and supports 8, 16, 24 or 32 bit (big-endian wire order) register widths.

Currently a lot of Linux camera sensor drivers all have their own custom
helpers for this, often copy and pasted from other drivers.

Add a set of generic helpers for this so that all sensor drivers can
switch to a single common implementation.

These helpers take an extra optional "int *err" function parameter,
this can be used to chain a bunch of register accesses together with
only a single error check at the end, rather than needing to error
check each individual register access. The first failing call will
set the contents of err to a non 0 value and all other calls will
then become no-ops.

Link: https://lore.kernel.org/linux-media/59aefa7f-7bf9-6736-6040-39551329cd0a@redhat.com/

Reviewed-by: Andy Shevchenko 
Tested-by: Tommaso Merciai 
Reviewed-by: Tommaso Merciai 
Signed-off-by: Hans de Goede 
Signed-off-by: Sakari Ailus 
Signed-off-by: Mauro Carvalho Chehab