Hi Andreas, On Thu, Jun 6, 2024 at 2:30 PM Andreas Kemnade <andreas@xxxxxxxxxxxx> wrote: > > Some of these chips have GNSS support. In some vendor kernels > a driver on top of misc/ti-st can be found providing a /dev/tigps > device which speaks the secretive Air Independent Interface (AI2) protocol. > > To be more compatible with userspace send out NMEA by default but > allow a more raw mode by using a module parameter. > > This was tested on the Epson Moverio BT-200. > > Who will take this series (1-3)? GNSS with ack from Bluetooth? > > Changes since V3: > - Finally remove the period from 1/4 subject > - include things directly for get_unaligned_le16() to fix 0-day issues > > Changes since V2: > - Optimize waits > - Fix some packet analysis / checksum computation issue > - Adding a proposal for removing those waits as RFC > - Minor spell corrections and improved descriptions > > Changes since V1: > - Set up things for NMEA output > - Powerup/down at open()/close() > - split out logic between drivers/bluetooth and drivers/gnss > - leave out drivers/misc/ti-st driver removal to avoid > filling up mailboxes during the iterations, this series is > still a proof that it is not needed, will take the brush after > this series is accepted. > > > Andreas Kemnade (4): > gnss: Add AI2 protocol used by some TI combo chips > Bluetooth: ti-st: Add GNSS subdevice for TI Wilink chips The bluetooth one looks relatively simple so I could take that one and push to bluetooth-next if there are no dependencies on the other changes. > gnss: Add driver for AI2 protocol > gnss: ai2: replace long sleeps by wait for acks > > drivers/bluetooth/hci_ll.c | 81 +++++ > drivers/gnss/Kconfig | 13 + > drivers/gnss/Makefile | 3 + > drivers/gnss/ai2.c | 560 +++++++++++++++++++++++++++++++++++ > drivers/gnss/core.c | 1 + > include/linux/gnss.h | 1 + > include/linux/ti_wilink_st.h | 8 + > 7 files changed, 667 insertions(+) > create mode 100644 drivers/gnss/ai2.c > > -- > 2.39.2 > -- Luiz Augusto von Dentz
