diff options
| author | Jeremy Compostella <jeremy.compostella@intel.com> | 2024-10-28 16:32:55 -0700 |
|---|---|---|
| committer | Jérémy Compostella <jeremy.compostella@intel.com> | 2024-11-27 21:27:59 +0000 |
| commit | 3f535d3a0dcf17fadb98f52450ab79e693446040 (patch) | |
| tree | 4d5f6f04e301a7b5b09bad2bb5a075aa84c47fe9 /src/drivers | |
| parent | 354cba21a41aa868b7b41804c2859f920d2e1b17 (diff) | |
drivers/wifi: Support Bluetooth BiQuad Bypass Filter
This feature provides ability to identify non-LTE platform and disable
BiQuad Bypass filter logic in hardware for Bluetooth usecases reducing
device power consumption.
The implementation follows document 559910 Intel Connectivity
Platforms BIOS Guideline revision 9.2 specification.
BUG=b:346600091
TEST=BBFB method is added to the bluetooth companion device and
return the data supplied by the SAR binary blob
Change-Id: Iebe95815c944d045f4cf686abcd1874a8a45e213
Signed-off-by: Jeremy Compostella <jeremy.compostella@intel.com>
Reviewed-on: https://review.coreboot.org/c/coreboot/+/84942
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Subrata Banik <subratabanik@google.com>
Reviewed-by: Elyes Haouas <ehaouas@noos.fr>
Reviewed-by: Kapil Porwal <kapilporwal@google.com>
Diffstat (limited to 'src/drivers')
| -rw-r--r-- | src/drivers/wifi/generic/acpi.c | 36 |
1 files changed, 36 insertions, 0 deletions
diff --git a/src/drivers/wifi/generic/acpi.c b/src/drivers/wifi/generic/acpi.c index 0a5bee728f..4be43ffe43 100644 --- a/src/drivers/wifi/generic/acpi.c +++ b/src/drivers/wifi/generic/acpi.c @@ -701,6 +701,41 @@ static void sar_emit_bpag(const struct bpag_profile *bpag) acpigen_write_package_end(); } +static void sar_emit_bbfb(const struct bbfb_profile *bbfb) +{ + if (bbfb == NULL) + return; + + /* + * Name ("BBFB", Package () { + * Revision, + * Package () { + * Domain Type, // 0x12:Bluetooth + * By Pass Enabled // Enable ByPass + * } + * }) + */ + if (bbfb->revision != BBFB_REVISION) { + printk(BIOS_ERR, "Unsupported BBFB table revision: %d\n", + bbfb->revision); + return; + } + + acpigen_write_name("BBFB"); + acpigen_write_package(2); + acpigen_write_dword(bbfb->revision); + + /* + * Emit 'Domain Type' + 'Enable ByPass' + */ + acpigen_write_package(2); + acpigen_write_dword(DOMAIN_TYPE_BLUETOOTH); + acpigen_write_dword(bbfb->enable_quad_filter_bypass); + + acpigen_write_package_end(); + acpigen_write_package_end(); +} + static void emit_wifi_sar_acpi_structures(const struct device *dev, union wifi_sar_limits *sar_limits) { @@ -834,6 +869,7 @@ static void wifi_ssdt_write_properties(const struct device *dev, const char *sco acpigen_write_scope(path); sar_emit_brds(sar_limits.bsar); sar_emit_bpag(sar_limits.bpag); + sar_emit_bbfb(sar_limits.bbfb); acpigen_write_scope_end(); } else { printk(BIOS_ERR, "Failed to get %s Bluetooth companion ACPI path\n", |