Here is another chapter of the story to get gta04 gnss power management into the mainline kernel. There is a w2sg0004 without wakeup line in there, so power state can only be determined indirectly by looking at the serial data lines. Then there as also an lna which needs to be powered for real gps reception. That part needs probably more discussion, since it might be an idea to have it more generalized since it has nothing todo with the chip itself. I marked the corresponding patches as RFC. The support for the w2sg0004 without wakeup can imho go in without the lna first because users of that chip without an additional lna power supply can already benefit from it if we should do more discussion first. I just kept them together so that the full picture can be seen. Andreas Kemnade (5): gnss: sirf: write data to gnss only when the gnss device is open gnss: sirf: power on logic for devices without wakeup signal dt-bindings: gnss: add w2sg0004 compatible string gnss: sirf: add a separate supply for a lna dt-bindings: gnss: add lna-supply property .../devicetree/bindings/gnss/sirfstar.txt | 2 + drivers/gnss/sirf.c | 126 +++++++++++++++------ 2 files changed, 96 insertions(+), 32 deletions(-) -- 2.11.0
