[PATCH 0/6] b43: complete N-PHY rev 8 + radio 2057 rev 8 support

[Alessio Ferri]

This series completes b43 support for the Broadcom N-PHY revision 8
paired with radio 2057 revision 8. b43 already supports the surrounding
PHY family - N-PHY rev 8 with radio 2057 rev 5 and rev 7 are handled,
and rev 16 with radio 2057 rev 9 is handled - but the rev 8 + rev 8
combination falls through four dispatcher gaps:

  - radio_2057.c, r2057_upload_inittabs(), case 8 lists radio_rev 5
    and 7 only;
  - radio_2057.c, r2057_get_chantabent_rev7(), case 8 lists radio_rev
    5 only;
  - tables_nphy.c, b43_nphy_get_ipa_gain_table(), case 8 lists
    radio_rev 5 only;
  - radio_2057.c carries r2057_rev8_init[] as a 54-entry stub commented
    out with "TODO: Which devices should use it?".

Two further pieces of plumbing are needed to reach those dispatchers
in the first place: d11 core revision 0x16 is missing from the b43
bcma id table, and the corerev 22 / radio 2057 combination needs the
24-bit indirect radio access path that brcmsmac uses for the same
silicon generation (see brcmsmac/phy/phy_cmn.c read_radio_reg() /
write_radio_reg()).

The series:

  1/6  b43: add d11 core revision 0x16 to id table
  2/6  b43: route d11 corerev 22 to 24-bit indirect radio access
  3/6  b43: support radio 2057 rev 8
  4/6  b43: add IPA TX gain table for N-PHY r8 + radio 2057 r8
  5/6  b43: add channel info table for N-PHY r8 + radio 2057 r8
  6/6  b43: add RF power offset for N-PHY r8 + radio 2057 r8

Patches are ordered so that each one fixes the next visible failure
in bring-up: 1/6 makes b43 bind to the core, 2/6 lets phy versioning
read coherent radio identifiers, 3/6 unblocks the boot-time radio
calibration that otherwise stalls the PSM at microcode startup, and
4/6-6/6 fill the remaining 2.4 GHz dispatcher entries so
b43_nphy_set_channel completes to the default channel and core_init
proceeds past PHY init.

Tested on a D-Link DSL-3580L (Broadcom BCM6362 SoC, single-die 2.4 GHz
N-PHY rev 8 + radio 2057 rev 8 in 2.4 GHz IPA mode). The chip is in
service worldwide in xDSL CPE devices.

b43 is currently Orphan in MAINTAINERS. These patches do not add a
new chip family or PHY infrastructure; they fill four explicit
dispatcher gaps for a combination of an already-supported PHY and
an already-supported radio.

Alessio Ferri (6):
  b43: add d11 core revision 0x16 to id table
  b43: route d11 corerev 22 to 24-bit indirect radio access
  b43: support radio 2057 rev 8
  b43: add IPA TX gain table for N-PHY r8 + radio 2057 r8
  b43: add channel info table for N-PHY r8 + radio 2057 r8
  b43: add RF power offset for N-PHY r8 + radio 2057 r8

 drivers/net/wireless/broadcom/b43/main.c      |  10 +-
 .../net/wireless/broadcom/b43/radio_2057.c    | 230 ++++++++++++++++--
 .../net/wireless/broadcom/b43/tables_nphy.c   |  58 +++++
 3 files changed, 280 insertions(+), 18 deletions(-)

-- 
2.43.0