diff options
Diffstat (limited to 'src/drivers/intel/wifi/wifi.c')
| -rw-r--r-- | src/drivers/intel/wifi/wifi.c | 25 |
1 files changed, 25 insertions, 0 deletions
diff --git a/src/drivers/intel/wifi/wifi.c b/src/drivers/intel/wifi/wifi.c index e19711425e..01a338d1d5 100644 --- a/src/drivers/intel/wifi/wifi.c +++ b/src/drivers/intel/wifi/wifi.c @@ -255,9 +255,34 @@ static const char *intel_wifi_acpi_name(const struct device *dev) } #endif +static void pci_dev_apply_quirks(struct device *dev) +{ + unsigned int cap; + uint16_t val; + struct device *root = dev->bus->dev; + + switch (dev->device) { + case PCI_DEVICE_ID_TP_9260_SERIES_WIFI: + cap = pci_find_capability(root, PCI_CAP_ID_PCIE); + /* Check the LTR for root port and enable it */ + if (cap) { + val = pci_read_config16(root, cap + + PCI_EXP_DEV_CAP2_OFFSET); + if (val & LTR_MECHANISM_SUPPORT) { + val = pci_read_config16(root, cap + + PCI_EXP_DEV_CTL_STS2_CAP_OFFSET); + val |= LTR_MECHANISM_EN; + pci_write_config16(root, cap + + PCI_EXP_DEV_CTL_STS2_CAP_OFFSET, val); + } + } + } +} + static void wifi_pci_dev_init(struct device *dev) { pci_dev_init(dev); + pci_dev_apply_quirks(dev); if (IS_ENABLED(CONFIG_ELOG)) { uint32_t val; |