staging: wfx: setup initial chip configuration

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A few tasks remain to be done in order to finish chip initial
configuration:
   - configure chip to use multi-tx confirmation (speed up data
     transfer)
   - configure chip to use wake-up feature (save power consumption
     during runtime)
   - set hardware configuration (clocks, RF, pinout, etc...) using a
     Platform Data Set (PDS) file

On release, driver completely shutdown the chip to save power
consumption.

Documentation about PDS and PDS data for sample boards are available
here[1]. One day, PDS data may find a place in device tree but,
currently, PDS is too much linked with firmware to allowing that.

This patch also add "send_pds" file in debugfs to be able to dynamically
change PDS (only for debug, of course).

[1]: https://github.com/SiliconLabs/wfx-firmware/tree/master/PDS

Signed-off-by: Jérôme Pouiller <jerome.pouiller@silabs.com>
Link: https://lore.kernel.org/r/20190919142527.31797-15-Jerome.Pouiller@silabs.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

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This commit is contained in:

Jérôme Pouiller 2019-09-19 14:25:44 +00:00 • committed by Greg Kroah-Hartman

parent 846239f641

commit c7ff39dd8b

6 changed files with 138 additions and 0 deletions

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1

drivers/staging/wfx/bus_sdio.c

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1

drivers/staging/wfx/bus_spi.c

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29

drivers/staging/wfx/debug.c

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drivers/staging/wfx/hif_rx.c

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drivers/staging/wfx/main.c

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drivers/staging/wfx/main.h

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