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drivers/wifi: Support Bluetooth Dual Chain Mode

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This feature provides ability to provide dual chain setting.

The implementation follows document 559910 Intel Connectivity
Platforms BIOS Guideline revision 9.2 specification.

BUG=b:346600091
TEST=BDCM method is added to the bluetooth companion device and
     return the data supplied by the SAR binary blob

Change-Id: Iebe95815c944d045f4cf686abcd1874a8a45e220
Signed-off-by: Jeremy Compostella <jeremy.compostella@intel.com>
Reviewed-on: https://review.coreboot.org/c/coreboot/+/84943
Reviewed-by: Kapil Porwal <kapilporwal@google.com>
Reviewed-by: Subrata Banik <subratabanik@google.com>
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Elyes Haouas <ehaouas@noos.fr>
This commit is contained in:
Jeremy Compostella 2024-10-29 10:40:27 -07:00 • committed by Jérémy Compostella
commit 67dff1b2b1
3 changed files with 53 additions and 1 deletions
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36
src/drivers/wifi/generic/acpi.c
View file

@ -736,6 +736,41 @@ static void sar_emit_bbfb(const struct bbfb_profile *bbfb)
acpigen_write_package_end();
}
static void sar_emit_bdcm(const struct bdcm_profile *bdcm)
{
if (bdcm == NULL)
return;
/*
* Name ("BDCM", Package () {
* Revision,
* Package () {
* Domain Type, // 0x12:Bluetooth
* Dual Chain Mode
* }
* })
*/
if (bdcm->revision != BDCM_REVISION) {
printk(BIOS_ERR, "Unsupported BDCM table revision: %d\n",
bdcm->revision);
return;
}
acpigen_write_name("BDCM");
acpigen_write_package(2);
acpigen_write_dword(bdcm->revision);
/*
* Emit 'Domain Type' + 'Dual Chain Mode'
*/
acpigen_write_package(2);
acpigen_write_dword(DOMAIN_TYPE_BLUETOOTH);
acpigen_write_dword(bdcm->dual_chain_mode);
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)
{
@ -870,6 +905,7 @@ static void wifi_ssdt_write_properties(const struct device *dev, const char *sco
sar_emit_brds(sar_limits.bsar);
sar_emit_bpag(sar_limits.bpag);
sar_emit_bbfb(sar_limits.bbfb);
sar_emit_bdcm(sar_limits.bdcm);
acpigen_write_scope_end();
} else {
printk(BIOS_ERR, "Failed to get %s Bluetooth companion ACPI path\n",