[Letux-kernel] [PATCH v5 3/5] misc serdev: Add w2sg0004 (gps receiver) power control driver

Pavel Machek pavel at ucw.cz
Mon Mar 26 15:59:20 CEST 2018


> > No, we need some kind of at least rudimentary gps framework even if we
> > allow for a raw (NMEA) interface for the time being (possibly
> > indefinitely).
> Ok, that would be fine if we can get that!
> For a minimal set of API I think something like this (following hci_dev) would suffice:
> struct gps_dev {
> 	...
> 	int (*open)(struct gps_dev *gdev);
> 	int (*close)(struct gps_dev *gdev);
> 	int (*send)(struct gps_dev *gdev, char *data, int length);
> };
> int gps_register_dev(struct gps_dev *gdev);
> void gps_unregister_dev(struct gps_dev *gdev);
> int gps_recv_nmea_chars(struct gps_dev *gdev, char *data, int length);
> If that would wrap all creation of some /dev/ttyGPS0 (or however it is called),
> it would fit our needs for a driver and user-space for our system.
> And I would be happy to get rid of creating and registering a /dev/ttyGPS0
> in the w2sg0004 driver.

Sounds like a good start.

Best regards,
(english) http://www.livejournal.com/~pavelmachek
(cesky, pictures) http://atrey.karlin.mff.cuni.cz/~pavel/picture/horses/blog.html
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