Jerome Pouiller [off-list ref] writes:

From: Jérôme Pouiller <jerome.pouiller@silabs.com>

Hello,

I think the wfx driver is now mature enough to be accepted in the
drivers/net/wireless directory.

The firmware is now a part of the linux-firmware repository since relase
20210315[1]. It had taken a bit of time because I have worked with the legal
department to simplify the redistribution terms of the firmware.

[1]: https://lore.kernel.org/linux-firmware/2833354.gXvVfaC4I7@pc-42/ (local)


As requested by Kalle[2], I send one file per patch. At the end, all the
patches (or at least the patches 3 to 24) will be squashed (therefore, I
didn't bother to write real commit messages).

[2]: https://lore.kernel.org/lkml/87ft6p2n0h.fsf@codeaurora.org/ (local)

Here is a diagram of the global architecture that may help to understand
the code:

    ,------------------------------------.
    |                mac80211            |
    `------------------------------------'
    ,------------+-----------+-----------.
    |    sta     |           |           |
    |    scan    |           |           |
    |    main    |           |           |
    +------------+  data_tx  |           |
    |    key     |           |  data_rx  |
    | hif_tx_mib |   queue   |           |
    |   hif_tx   |           |           |
    |   hif_rx   |           |           |
    |  hif_api_* |           |           |
    +------------+-----------+-----------+--------.
    |                  bh                |  fwio  |
    +------------------------------------+--------+
    |                     hwio                    |
    +---------------------------------------------+
    |                   bus_sdio                  |
    |                   bus_spi                   |
    `---------------------------------------------'
    ,---------------------------------------------.
    |                  spi / sdio                 |
    `---------------------------------------------'

Roughly, I have sent the files from the bottom to the top.


v8:
  - Change the way the DT is handled. The user can now specify the name of
    the board (= chip + antenna) he use. It easier for board designers to
    add new entries. I plan to send a PR to linux-firmware to include PDS
    files of the developpement boards belong the firmware (I also plan to
    relocate these file into wfx/ instead of silabs/). (Kalle, Pali)
  - Prefix visible functions and structs with "wfx_". I mostly kept the
    code under 80 columns. (Kalle, Pali, Greg)
  - Remove support for force_ps_timeout for now. (Kalle)
  - Fix licenses of Makefile, Kconfig and hif_api*.h. (Kalle)
  - Do not mix and match endianess in struct hif_ind_startup. (Kalle)
  - Remove magic values. (Kalle)
  - Use IS_ALIGNED(). (BTW, PTR_IS_ALIGNED() does not exist?) (Kalle)
  - I have also noticed that some headers files did not declare all the
    struct they used.

  These issues remain (I hope they are not blockers):
  - I have currently no ideas how to improve/simplify the parsing PDS file.
    (Kalle)

For the PDS file problem it would help if you could actually describe
what the firmware requires/needs and then we can start from that. I had
some questions about this in v7 but apparently you missed those.

-- 
https://patchwork.kernel.org/project/linux-wireless/list/

https://wireless.wiki.kernel.org/en/developers/documentation/submittingpatches