diff options
Diffstat (limited to 'src/soc')
| -rw-r--r-- | src/soc/intel/common/block/usb4/usb4.c | 11 |
1 files changed, 11 insertions, 0 deletions
diff --git a/src/soc/intel/common/block/usb4/usb4.c b/src/soc/intel/common/block/usb4/usb4.c index f3c81dc523..923ec5588e 100644 --- a/src/soc/intel/common/block/usb4/usb4.c +++ b/src/soc/intel/common/block/usb4/usb4.c @@ -6,7 +6,10 @@ #include <device/pci.h> #include <device/pci_def.h> #include <device/pci_ids.h> +#include <intelblocks/systemagent.h> #include <soc/pci_devs.h> +#include <soc/pcr_ids.h> +#include <soc/tcss.h> #define INTEL_TBT_IMR_VALID_UUID "C44D002F-69F9-4E7D-A904-A7BAABDF43F7" #define INTEL_TBT_WAKE_SUPPORTED_UUID "6C501103-C189-4296-BA72-9BF5A26EBE5D" @@ -24,10 +27,18 @@ static const char *tbt_dma_acpi_name(const struct device *dev) } } +static int valid_tbt_auth(void) +{ + return REGBAR32(PID_IOM, IOM_CSME_IMR_TBT_STATUS) & TBT_VALID_AUTHENTICATION; +} + static void tbt_dma_fill_ssdt(const struct device *dev) { struct acpi_dp *dsd, *pkg; + if (!valid_tbt_auth()) + return; + acpigen_write_scope(acpi_device_path(dev)); dsd = acpi_dp_new_table("_DSD"); |