linux-kernel - [PATCH v4 00/15] media: mt9m114: Changes to make it work with atomisp devices

lists.openwall.net		lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC
Open Source and information security mailing list archives

Hash Suite: Windows password security audit tool. GUI, reports in PDF.

[<prev] [next>] [thread-next>] [day] [month] [year] [list]

Message-Id: <20251224-mt9m114-atomisp-v4-0-60b25da7a1bc@oss.qualcomm.com>
Date: Wed, 24 Dec 2025 13:31:09 +0100
From: Hans de Goede <johannes.goede@....qualcomm.com>
To: Laurent Pinchart <Laurent.pinchart@...asonboard.com>,
        Mauro Carvalho Chehab <mchehab@...nel.org>,
        Sakari Ailus <sakari.ailus@...ux.intel.com>
Cc: linux-media@...r.kernel.org, linux-kernel@...r.kernel.org,
        Laurent Pinchart <laurent.pinchart@...asonboard.com>,
        Hans de Goede <johannes.goede@....qualcomm.com>
Subject: [PATCH v4 00/15] media: mt9m114: Changes to make it work with
 atomisp devices

Hi All,

Here is v4 of my series to make the "mainline" mt9m114 driver work
on devices with an atomisp CSI2 receiver / ISP. This has been tested on
an Asus T100TA.

Changes in v4:
- Drop "media: mt9m114: Add support for clock-frequency property" this is
  not longer necessary with the new vl2_sensor_clk_get() helper
- Add "media: aptina-pll: Add comment documenting the PLL chain"
- Rework "media: mt9m114: Drop start-, stop-streaming sequence from
  initialize" moving mt9m114_initialize() to mt9m114_start_streaming() and
  dropping the config_change_pending flag
- Address comments from Laurent about commit message and comment wording
- Some small code tweaks based on suggestions from Laurent

Changes in v3:
- Document that using 768Mhz for out_clock_max does not work
- Improve "media: mt9m114: Put sensor in reset on power down" commit message
- Drop setting of the MT9M114_CAM_OUTPUT_FORMAT_BT656_CROP_SCALE_DISABLE bit
- Split "media: mt9m114: Fix scaler bypass mode" into multiple patches,
  addressing various review comments as part of this

Changes in v2:
- Rebase on top of sailus/media_tree.git/fixes which now has 4 of
  the patches from Mathis': "MT9M114 driver bugfix and improvements"
  series, this avoids most of the conlicts between the 2 series
- Add Laurent's Reviewed-by to some of the patches
- Add select VIDEO_APTINA_PLL to Kconfig
- Use correct aptina_pll_limits
- After setting reset high wait 20 clk cycles before disabling
  the clk and regulators
- When bypassing the scalar make ifp_get_selection() / ifp_set_selection()
  fill sel->r with a rectangle of (0,0)/wxh and return 0 instead of
  returning -EINVAL

Regards,

Hans

---
Hans de Goede (15):
      media: aptina-pll: Debug log p1 min and max values
      media: aptina-pll: Add comment documenting the PLL chain
      media: mt9m114: Use aptina-PLL helper to get PLL values
      media: mt9m114: Lower minimum vblank value
      media: mt9m114: Fix default hblank and vblank values
      media: mt9m114: Tweak default hblank and vblank for more accurate fps
      media: mt9m114: Avoid a reset low spike during probe()
      media: mt9m114: Put sensor in reset on power down
      media: mt9m114: Add and use mt9m114_ifp_get_border() helper function
      media: mt9m114: Adjust IFP selections and source format when source format changes to/from RAW10
      media: mt9m114: Update source pad selection and format when sink pad format changes
      media: mt9m114: Don't allow changing the IFP crop/compose selections when bypassing the scaler
      media: mt9m114: Drop start-, stop-streaming sequence from initialize
      media: mt9m114: Return -EPROBE_DEFER if no endpoint is found
      media: mt9m114: Add ACPI enumeration support

 drivers/media/i2c/Kconfig      |   1 +
 drivers/media/i2c/aptina-pll.c |  12 ++
 drivers/media/i2c/mt9m114.c    | 257 ++++++++++++++++++++++++++++-------------
 3 files changed, 190 insertions(+), 80 deletions(-)
---
base-commit: b70886ff5833cf499e77af77d2324ce8f68b60ce
change-id: 20251224-mt9m114-atomisp-31a4d366328a

Best regards,
-- 
Hans de Goede <johannes.goede@....qualcomm.com>