diff options
Diffstat (limited to 'src')
| -rw-r--r-- | src/device/pci_device.c | 18 | ||||
| -rw-r--r-- | src/include/device/pci.h | 1 |
2 files changed, 19 insertions, 0 deletions
diff --git a/src/device/pci_device.c b/src/device/pci_device.c index a2ad2b3db9..d03d88df39 100644 --- a/src/device/pci_device.c +++ b/src/device/pci_device.c @@ -1346,6 +1346,24 @@ uint16_t pci_find_cap_recursive(const struct device *dev, uint16_t cap) } /** + * Returns if the device support PMEs. + * + * @param dev Pointer to the device structure. + * @return Returns true when the device support PMEs. The PME generation can be + * disabled though. + */ +bool pci_has_pme_pin(const struct device *dev) +{ + const uint16_t cap = pci_find_capability(dev, PCI_CAP_ID_PM); + if (!cap) + return false; + + const uint16_t pmecap = pci_read_config16(dev, cap + PCI_PM_PMC); + + return !!(pmecap & PCI_PM_CAP_PME); +} + +/** * PCI devices that are marked as "hidden" do not get probed. However, the same * initialization logic is still performed as if it were. This is useful when * devices would like to be described in the devicetree.cb file, and/or present diff --git a/src/include/device/pci.h b/src/include/device/pci.h index 2e7519554b..83d6628fa7 100644 --- a/src/include/device/pci.h +++ b/src/include/device/pci.h @@ -98,6 +98,7 @@ void pci_dev_set_subsystem(struct device *dev, unsigned int vendor, void pci_dev_init(struct device *dev); unsigned int pci_match_simple_dev(struct device *dev, pci_devfn_t sdev); uint16_t pci_find_cap_recursive(const struct device *dev, uint16_t cap); +bool pci_has_pme_pin(const struct device *dev); const char *pin_to_str(int pin); int get_pci_irq_pins(struct device *dev, struct device **parent_bdg); |