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drivers/wifi: Support Bluetooth Bands Selection Mode

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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>
This commit is contained in:
Jeremy Compostella 2024-10-29 11:36:16 -07:00 • committed by Jérémy Compostella
commit e9b36b03ce
3 changed files with 53 additions and 1 deletions
Download patch file Download diff file Expand all files Collapse all files

36
src/drivers/wifi/generic/acpi.c
View file

@ -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",