diff options
Diffstat (limited to 'src/drivers')
| -rw-r--r-- | src/drivers/wifi/generic/acpi.c | 42 |
1 files changed, 40 insertions, 2 deletions
diff --git a/src/drivers/wifi/generic/acpi.c b/src/drivers/wifi/generic/acpi.c index d3277cc1e0..44705535ef 100644 --- a/src/drivers/wifi/generic/acpi.c +++ b/src/drivers/wifi/generic/acpi.c @@ -16,8 +16,10 @@ #include "wifi_private.h" /* Domain type */ -#define DOMAIN_TYPE_WIFI 0x7 -#define DOMAIN_TYPE_BLUETOOTH 0x12 +enum sar_domain { + DOMAIN_TYPE_WIFI = 0x7, + DOMAIN_TYPE_BLUETOOTH = 0x12 +}; /* Maximum number DSM UUID bifurcations in _DSM */ #define MAX_DSM_FUNCS 2 @@ -967,6 +969,40 @@ static void sar_emit_wpfc(const struct wpfc_profile *wpfc) acpigen_write_package_end(); } +static void sar_emit_dsbr(const struct dsbr_profile *dsbr, enum sar_domain domain) +{ + if (dsbr == NULL) + return; + + /* + * Name ("DSBR", Package() { + * { + * Revision, + * Package() + * { + * DomainType, // 0x7:WiFi + * BRI Resistor Value // in Ohm + * } + } }) + */ + if (dsbr->revision != DSBR_REVISION) { + printk(BIOS_ERR, "Unsupported DSBR table revision: %d\n", + dsbr->revision); + return; + } + + acpigen_write_name("DSBR"); + acpigen_write_package(2); + acpigen_write_dword(dsbr->revision); + + acpigen_write_package(2); + acpigen_write_dword(domain); + acpigen_write_dword(dsbr->bri_resistor_value); + + 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) { @@ -984,6 +1020,7 @@ static void emit_wifi_sar_acpi_structures(const struct device *dev, sar_emit_wtas(sar_limits->wtas); sar_emit_wbem(sar_limits->wbem); sar_emit_wpfc(sar_limits->wpfc); + sar_emit_dsbr(sar_limits->dsbr, DOMAIN_TYPE_WIFI); } static void wifi_ssdt_write_device(const struct device *dev, const char *path) @@ -1107,6 +1144,7 @@ static void wifi_ssdt_write_properties(const struct device *dev, const char *sco sar_emit_bucs(sar_limits.bucs); sar_emit_bdmm(sar_limits.bdmm); sar_emit_ebrd(sar_limits.ebrd); + sar_emit_dsbr(sar_limits.dsbr, DOMAIN_TYPE_BLUETOOTH); acpigen_write_scope_end(); } else { printk(BIOS_ERR, "Failed to get %s Bluetooth companion ACPI path\n", |