[PATCH v3 0/6] iio: light: ltr501: Add ltr329 support

From: Esben Haabendal

Date: Tue Aug 04 2026 - 13:05:17 EST


The LiteON LTR-329ALS-01 chip is similar to the LTR-303ALS-01, except for
interrupt support and related registers, which LTR-329ALS-01 does not have.

Signed-off-by: Esben Haabendal <esben@xxxxxxxxxx>
---
Changes in v3:
- Removed duplicated error message on devm_request_threaded_irq() failure.
- Added Fixes: and Cc: stable tags to fix for error handling of
devm_request_threaded_irq() failure.
- Added no_irq_support boolean to simplify checking for chip irq support.
- Moved check for no_irq_support from ltr501_read_intr_prst() and
ltr501_write_intr_prst() to callers. Note: event functions are not
registered for no_irq_support devices.
- Moved #include <linux/array_size.h> into its place according to
alphabetical sorting order (although the rest is not really wel sorted).
- Restored alphanumerical ordering of compatible list in bindings
documentation.
- Ordered device arrays and enum values according to alphanumerical sorting
order.
- Link to v2: https://patch.msgid.link/20260715-liteon-ltr329-v2-0-d18af55edab5@xxxxxxxxxx

Changes in v2:
- Fixed error handling when irq is defined for a chip that does not support
irq, powering the chip down again.
- Added simlar fix to error handling of devm_request_threaded_irq() error
handling, powering the chip down again on failure.
- Added explicit #include <linux/array_size.h>.
- Link to v1: https://patch.msgid.link/20260715-liteon-ltr329-v1-0-31f027051594@xxxxxxxxxx

To: Jonathan Cameron <jic23@xxxxxxxxxx>
To: David Lechner <dlechner@xxxxxxxxxxxx>
To: Nuno Sá <nuno.sa@xxxxxxxxxx>
To: Andy Shevchenko <andy@xxxxxxxxxx>
To: Rob Herring <robh@xxxxxxxxxx>
To: Krzysztof Kozlowski <krzk+dt@xxxxxxxxxx>
To: Conor Dooley <conor+dt@xxxxxxxxxx>
To: Nikita Travkin <nikita@xxxxxxx>
To: Maslov Dmitry <maslovdmitry@xxxxxxxx>
To: Kuppuswamy Sathyanarayanan <sathyanarayanan.kuppuswamy@xxxxxxxxxxxxxxx>
Cc: Jonathan Cameron <Jonathan.Cameron@xxxxxxxxxx>
Cc: linux-iio@xxxxxxxxxxxxxxx
Cc: devicetree@xxxxxxxxxxxxxxx
Cc: linux-kernel@xxxxxxxxxxxxxxx

---
Esben Haabendal (6):
dt-bindings: iio: light: ltr501: Sort compatible enum array
dt-bindings: iio: light: ltr501: Add missing ltr303 compatible
dt-bindings: iio: light: ltr501: Add ltr329 compatible
iio: light: ltr501: Power down chip if request irq fails
iio: light: ltr501: Add ltr329 driver support
iio: light: ltr501: Fix sorting order of device arrays

.../bindings/iio/light/liteon,ltr501.yaml | 4 +-
drivers/iio/light/ltr501.c | 117 +++++++++++++--------
2 files changed, 78 insertions(+), 43 deletions(-)
---
base-commit: 075b74841bd0065a3bda3440873c747938e69b68
change-id: 20260711-liteon-ltr329-a3eb12414866

Best regards,
--
Esben Haabendal <esben@xxxxxxxxxx>