v3:
- Add MAINTAINERS entry for the new driver + binding (patchwork /
checkpatch warned about the missing entry on v2).
- No other changes.
v2 (sent 2026-06-05): pure re-send. v1 was sent on 2026-06-04 but
PATCH 2/2 (the driver itself) was silently dropped by my outbound
SMTP relay during the original send - the cover letter and PATCH 1/2
reached the lists, the driver patch did not. v2 routed through b4
+ kernel.org so the driver actually landed.
To: Herman van Hazendonk <github.com@herrie.org>
To: Mauro Carvalho Chehab <mchehab@kernel.org>
To: Rob Herring <robh@kernel.org>
To: Krzysztof Kozlowski <krzk+dt@kernel.org>
To: Conor Dooley <conor+dt@kernel.org>
To: Sakari Ailus <sakari.ailus@linux.intel.com>
Cc: linux-media@vger.kernel.org
Cc: devicetree@vger.kernel.org
Cc: linux-kernel@vger.kernel.org
This series adds a V4L2 subdev driver and DT binding for the Aptina
MT9M113, a 1.3 Mpx SoC sensor with an on-chip ISP and a small MCU
running a "SOC1040" firmware that performs auto-exposure, auto white
balance and lens-shading correction. The sensor talks to the host
over MIPI CSI-2 (1 or 2 data lanes); register access is over I2C
using the Qualcomm CCI helper.
Hardware layout exposed to userspace:
+-------------------+ +-----------------+
| Pixel Array (PA) |--->| IFP / ISP |--->[CSI-2]
| sink-less subdev | | MCU + pipe |
+-------------------+ +-----------------+
PA carries V4L2_CID_PIXEL_RATE and V4L2_CID_LINK_FREQ so that
downstream receivers walking the graph from the CSIPHY (camss does
this) find them on the entity flagged MEDIA_ENT_F_CAM_SENSOR.
V4L2 controls implemented:
- exposure / gain / hflip / vflip
- test pattern
- V4L2_CID_COLORFX (sepia / mono / negative / aqua / vivid)
- V4L2_CID_POWER_LINE_FREQUENCY (50/60 Hz flicker avoidance)
Tested on a HP TouchPad (APQ8060, MSM8x60 family) with the on-board
front 1.3 Mpx MT9M113. Probes cleanly, both PA and IFP subdevs
register, csiphy_stream_on() picks up link_freq from PA, and the
preview pipeline up through CAMSS produces frames. A bounded
3-attempt retry around s_stream(1) handles a residual silicon-level
wedge that occasionally leaves the MCU's SEQ_CMD in an inconsistent
state on cold start.
The DTS patches that enable the sensor on the HP TouchPad will be
sent separately to the ARM/DTS tree.
Signed-off-by: Herman van Hazendonk <github.com@herrie.org>
---
Herman van Hazendonk (2):
dt-bindings: media: i2c: add aptina,mt9m113
media: i2c: add Aptina MT9M113 1.3 Mpx SoC sensor driver
.../bindings/media/i2c/aptina,mt9m113.yaml | 127 +
MAINTAINERS | 8 +
drivers/media/i2c/Kconfig | 12 +
drivers/media/i2c/Makefile | 1 +
drivers/media/i2c/mt9m113.c | 2971 ++++++++++++++++++++
5 files changed, 3119 insertions(+)
---
base-commit: 944125b4c454b58d2fe6e35f1087a932b2050dff
change-id: 20260605-submit-media-mt9m113-5ac3137971fa
Best regards,
--
Herman van Hazendonk <github.com@herrie.org>