From: Alessio Ferri Date: Thu, 28 May 2026 17:31:41 +0000 (+0200) Subject: b43: add RF power offset for N-PHY r8 + radio 2057 r8 X-Git-Url: http://git.ipfire.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=21352612198c83a8441482abbf3bd45e4f128dd0;p=thirdparty%2Flinux.git b43: add RF power offset for N-PHY r8 + radio 2057 r8 Add the 2.4 GHz RF power offset table for N-PHY rev 8 paired with radio 2057 rev 8 and wire it to the existing dispatcher. b43_ntab_get_rf_pwr_offset_table() currently dispatches on phy->rev == 17 (radio_rev 14) and phy->rev == 16 (radio_rev 9) for 2.4 GHz. phy->rev == 8 falls through and the function logs: b43-phyX ERROR: No 2GHz RF power table available for this device Add a phy->rev == 8 / radio_rev == 8 case returning the new table. The values are sourced from the proprietary Broadcom wl driver's nphy_papd_padgain_dlt_2g_2057rev5 array. Reusing the rev 5 values is structurally appropriate: the IPA TX gain table added by the preceding patch in this series shares the low 24 bits of every entry with rev 5 - same gain step amplitudes, only the PAD-gain selector byte differs. b43's pad_gain extraction in b43_nphy_tx_pwr_ctl_init() reads bits 19..23 of the gain entry, which sit in the shared low-24-bit range; the same gain index therefore maps to the same physical PAD gain code on both revisions and warrants the same per-index dB offset. Note that b43_nphy_tx_gain_table_upload() currently has a "TODO: Enable this once we have gains configured" early-return for phy->rev >= 7. With that early-return in place, this table is fetched (silencing the b43err that would otherwise abort PHY init) but its values are not yet written to MMIO. Resolving the TODO is a future, separate task. Assisted-by: Claude:claude-4.7-opus Signed-off-by: Alessio Ferri Acked-by: Michael Büsch Reviewed-by: Joshua Peisach Link: https://patch.msgid.link/20260528-b43_complete_n_phy_rev_8_radio_2057_rev_8_support-v4-7-464566194d47@gmail.com Signed-off-by: Johannes Berg --- diff --git a/drivers/net/wireless/broadcom/b43/tables_nphy.c b/drivers/net/wireless/broadcom/b43/tables_nphy.c index 84e8d718d775..ecd660b9c75a 100644 --- a/drivers/net/wireless/broadcom/b43/tables_nphy.c +++ b/drivers/net/wireless/broadcom/b43/tables_nphy.c @@ -2923,6 +2923,21 @@ static const s16 b43_ntab_rf_pwr_offset_2057_rev9_5g[] = { 0, }; +/* Sourced from the rev 5 sibling: the rev 8 IPA TX gain table + * shares the low 24 bits of every entry with rev 5 (only the + * PAD-gain selector byte differs), so the same gain index maps to + * the same physical PAD gain code on both revisions. + */ +static const s16 b43_ntab_rf_pwr_offset_2057_rev8_2g[] = { + -109, -109, -82, -68, -58, + -50, -44, -39, -35, -31, + -28, -26, -23, -21, -19, + -17, -16, -14, -13, -11, + -10, -9, -8, -7, -5, + -5, -4, -3, -2, -1, + -1, 0, +}; + /* Extracted from MMIO dump of 6.30.223.248 * Entries: 0, 26, 28, 29, 30, 31 were guessed */ @@ -3782,6 +3797,10 @@ const s16 *b43_ntab_get_rf_pwr_offset_table(struct b43_wldev *dev) if (phy->radio_rev == 9) return b43_ntab_rf_pwr_offset_2057_rev9_2g; break; + case 8: + if (phy->radio_rev == 8) + return b43_ntab_rf_pwr_offset_2057_rev8_2g; + break; } b43err(dev->wl,