From e9b36b03ce63c40fd9d81cefc797928ca867bbb7 Mon Sep 17 00:00:00 2001 From: Jeremy Compostella Date: Tue, 29 Oct 2024 11:36:16 -0700 Subject: drivers/wifi: Support Bluetooth Bands Selection Mode This feature provides ability to provide Bluetooth Bands Selection Mode. The bluetooth bands selection mode is defined as follow: | Bit | Band GHz | Value | Description | Default | |------+----------+-------+----------------------+---------| | 0 | 2.4GHz | 0 | Controlled by NIC | 0 | | | | 1 | Force disable 2.4GHz | | | 1 | 5.2GHz | 0 | Controlled by NIC | 0 | | | | 1 | Force disable 5.2GHz | | | 2 | 5.8GHz | 0 | Controlled by NIC | 0 | | | | 1 | Force disable 5.8GHz | | | 3 | 6.2GHz | 0 | Controlled by NIC | 0 | | | | 1 | Force disable 6.2GHz | | | 31:4 | Reserved | | NA | 0 | The implementation follows document 559910 Intel Connectivity Platforms BIOS Guideline revision 9.2 specification. BUG=b:346600091 TEST=BBSM method is added to the bluetooth companion device and return the data supplied by the SAR binary blob Change-Id: Iebe95815c944d045f4cf686abcd1874a8a45e230 Signed-off-by: Jeremy Compostella Reviewed-on: https://review.coreboot.org/c/coreboot/+/84944 Tested-by: build bot (Jenkins) Reviewed-by: Subrata Banik Reviewed-by: Kapil Porwal --- src/drivers/wifi/generic/acpi.c | 36 ++++++++++++++++++++++++++++++++++++ 1 file changed, 36 insertions(+) (limited to 'src/drivers/wifi') diff --git a/src/drivers/wifi/generic/acpi.c b/src/drivers/wifi/generic/acpi.c index 8bfce816fb..a3fd3ca4c0 100644 --- a/src/drivers/wifi/generic/acpi.c +++ b/src/drivers/wifi/generic/acpi.c @@ -771,6 +771,41 @@ static void sar_emit_bdcm(const struct bdcm_profile *bdcm) acpigen_write_package_end(); } +static void sar_emit_bbsm(const struct bbsm_profile *bbsm) +{ + if (bbsm == NULL) + return; + + /* + * Name ("BBSM", Package () { + * Revision, + * Package () { + * Domain Type, // 0x12:Bluetooth + * Bluetooth Bands Selection + * } + * }) + */ + if (bbsm->revision != BBSM_REVISION) { + printk(BIOS_ERR, "Unsupported BBSM table revision: %d\n", + bbsm->revision); + return; + } + + acpigen_write_name("BBSM"); + acpigen_write_package(2); + acpigen_write_dword(bbsm->revision); + + /* + * Emit 'Domain Type' + 'Bluetooth Bands Selection' + */ + acpigen_write_package(2); + acpigen_write_dword(DOMAIN_TYPE_BLUETOOTH); + acpigen_write_dword(bbsm->bands_selection); + + 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) { @@ -906,6 +941,7 @@ static void wifi_ssdt_write_properties(const struct device *dev, const char *sco sar_emit_bpag(sar_limits.bpag); sar_emit_bbfb(sar_limits.bbfb); sar_emit_bdcm(sar_limits.bdcm); + sar_emit_bbsm(sar_limits.bbsm); acpigen_write_scope_end(); } else { printk(BIOS_ERR, "Failed to get %s Bluetooth companion ACPI path\n", -- cgit v1.2.3