Re: GNSS support for Qualcomm PCIe modem device

From: Sergey Ryazanov
Date: Thu Apr 03 2025 - 17:46:51 EST


Hi Slark, Zaihan,

Zaihn, congratulations with the progress, curious to see the result.

Slark, thank you for remind me. It's a good moment. Lets see how we can prototype it. Will try to do it this weekend and send some RFC next week.

On 03.04.2025 11:42, Muhammad Nuzaihan wrote:
Hi Slark,

I just implemented it in the wwan subsystem since it works for me (even without flow control). I wanted to port it to use GPS subsystem, however, debugging in GPS subsystem is too troublesome, especially when the driver crashes.

Unless i can have some VM with direct access to the Quectel hardware so i don't need to keep rebooting my machine if it crashes.

For now, i am getting GNSS/NMEA data from Quectel with MHI wwan modifications.

Regards,
Zaihan


On Thu, Apr 3 2025 at 04:02:01 PM +0800, Muhammad Nuzaihan <zaihan@xxxxxxxxxxxxxx> wrote:
Hi Slark,

I just implemented it in the wwan subsystem since it works for me (even without flow control). I wanted to port it to use GPS subsystem, however, debugging in GPS subsystem is too troublesome, especially when the driver crashes.

Unless i can have some VM with direct access to the Quectel hardware so i don't need to keep rebooting my machine if it crashes.

For now, i am getting GNSS/NMEA data from Quectel with MHI wwan modifications.

Regards,
Zaihan

On Thu, Apr 3 2025 at 02:06:52 PM +0800, Slark Xiao <slark_xiao@xxxxxxx> wrote:

Hi Sergey, Muhammad,
This is Slark. We have a discussion about the feature of GNSS/NMEA over QC PCIe modem
device since 2024/12.May I know if we have any progress on this feature?

It's really a common requirement for modem device since we have received some complaint
from our customer. Please help provide your advice.

--
Sergey