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From: Brajesh Patil <brajeshpatil11@gmail.com>
To: jic23@kernel.org
Cc: linux-iio@vger.kernel.org, marcelo.schmitt1@gmail.com
Subject: Adding support for QMC5883L magnetometer to IIO subsystem
Date: Tue, 8 Apr 2025 19:43:24 +0530	[thread overview]
Message-ID: <Z_UvBIsQ4rdIYTN8@brajesh-IdeaPad-3-15IAU7> (raw)

I have a QMC5883L magnetometer module that I’ve been trying to integrate with my 
Raspberry Pi using a kernel-space driver. While checking the mainline kernel, I 
found that there is a driver for the HMC5883L (under the hmc5843 driver), but nothing 
for QMC5883L.

I compared the datasheets for both devices and confirmed that they are not 
register-compatible — the QMC5883L has a different I2C address and an entirely different 
register map from the HMC5883L.

Given that this sensor is widely used (often as a drop-in replacement for the 
now-discontinued HMC5883L), I was thinking of writing a new driver for it under the IIO 
subsystem.

Would it make sense to move forward with this? If so, I’d appreciate any guidance or 
suggestions from the community.

Thanks,  
Brajesh 


             reply	other threads:[~2025-04-08 14:13 UTC|newest]

Thread overview: 3+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2025-04-08 14:13 Brajesh Patil [this message]
2025-04-10 15:10 ` Adding support for QMC5883L magnetometer to IIO subsystem David Lechner
     [not found]   ` <CALJe6R3YfhdLKDVBZ=NgO+m64wHHqvFf5tt1T-2pWnr29wE94Q@mail.gmail.com>
2025-04-11 21:34     ` David Lechner

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