diff options
| author | Jeremy Compostella <jeremy.compostella@intel.com> | 2024-10-29 11:36:16 -0700 |
|---|---|---|
| committer | Jérémy Compostella <jeremy.compostella@intel.com> | 2024-11-27 21:28:11 +0000 |
| commit | e9b36b03ce63c40fd9d81cefc797928ca867bbb7 (patch) | |
| tree | 2c51197adc7a045f37e134178c53261b4a161cc6 /src/drivers | |
| parent | 67dff1b2b1023aecbe6fa169bee2a4ba342b15c3 (diff) | |
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 <jeremy.compostella@intel.com>
Reviewed-on: https://review.coreboot.org/c/coreboot/+/84944
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Subrata Banik <subratabanik@google.com>
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 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", |