linux-kernel - [PATCH 00/18] media: microchip-isc: Color correction and histogram stats

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: <20251009155251.102472-1-balamanikandan.gunasundar@microchip.com>
Date: Thu, 9 Oct 2025 21:22:33 +0530
From: Balamanikandan Gunasundar <balamanikandan.gunasundar@...rochip.com>
To: Mauro Carvalho Chehab <mchehab@...nel.org>
CC: Eugen Hristev <eugen.hristev@...aro.org>, Chas Williams
	<3chas3@...il.com>, Nicolas Ferre <nicolas.ferre@...rochip.com>, "Alexandre
 Belloni" <alexandre.belloni@...tlin.com>, Claudiu Beznea
	<claudiu.beznea@...on.dev>, Balakrishnan Sambath
	<balakrishnan.s@...rochip.com>, Hans Verkuil <hverkuil@...nel.org>, "Ricardo
 Ribalda" <ribalda@...omium.org>, Laurent Pinchart
	<laurent.pinchart+renesas@...asonboard.com>, Jacopo Mondi
	<jacopo.mondi@...asonboard.com>, Daniel Scally
	<dan.scally+renesas@...asonboard.com>, Tomi Valkeinen
	<tomi.valkeinen@...asonboard.com>, <linux-kernel@...r.kernel.org>,
	<linux-media@...r.kernel.org>, <linux-atm-general@...ts.sourceforge.net>,
	<netdev@...r.kernel.org>, <linux-arm-kernel@...ts.infradead.org>,
	Balamanikandan Gunasundar <balamanikandan.gunasundar@...rochip.com>
Subject: [PATCH 00/18] media: microchip-isc: Color correction and histogram stats

Hi,

This patch series has a set of enhancements to the Microchip Image Sensor
Controller driver. The objective is to expand its image processing
capabilities and to improve the colors.

This series also introduces a new stats driver that exposes the histogram
data to userspace via v4l2 controls. This allows applications such as
libcamera to access real time image statistics for advanced image
processing like automatic exposure, white balance adjustments etc.

Balakrishnan Sambath (11):
  media: microchip-isc: Enable GDC and CBC module flags for RGB formats
  media: microchip-isc: Improve histogram calculation with outlier
    rejection
  media: microchip-isc: Use channel averages for Grey World AWB
  media: microchip-isc: Add range based black level correction
  media: platform: microchip: Extend gamma table and control range
  media: platform: microchip: Add new histogram submodule
  media: microchip-isc: Register and unregister statistics device
  media: microchip-isc: Always enable histogram for all RAW formats
  media: microchip-isc: fix histogram state initialization order
  media: microchip-isc: decouple histogram cycling from AWB mode
  media: microchip-isc: enable userspace histogram statistics export

Balamanikandan Gunasundar (7):
  media: platform: microchip: set maximum resolution for sam9x7
  media: platform: microchip: Include DPC modules flags in pipeline
  media: microchip-isc: expose hue and saturation as v4l2 controls
  media: microchip-isc: Rename CBC to CBHS
  media: microchip-isc: Store histogram data of all channels
  media: videodev2.h, v4l2-ioctl: Add microchip statistics format
  media: microchip-isc: expose color correction registers as v4l2
    controls

 drivers/media/platform/microchip/Kconfig      |   2 +
 drivers/media/platform/microchip/Makefile     |   2 +-
 .../platform/microchip/microchip-isc-base.c   | 373 ++++++++++--
 .../platform/microchip/microchip-isc-regs.h   |   3 +
 .../platform/microchip/microchip-isc-stats.c  | 549 ++++++++++++++++++
 .../media/platform/microchip/microchip-isc.h  |  44 +-
 .../microchip/microchip-sama5d2-isc.c         |   2 +-
 .../microchip/microchip-sama7g5-isc.c         |  73 ++-
 drivers/media/v4l2-core/v4l2-ioctl.c          |   1 +
 include/linux/atmel-isc-media.h               |  13 +
 include/uapi/linux/videodev2.h                |   3 +
 11 files changed, 1001 insertions(+), 64 deletions(-)
 create mode 100644 drivers/media/platform/microchip/microchip-isc-stats.c

-- 
2.34.1