diff options
| -rw-r--r-- | src/soc/intel/common/block/include/intelblocks/lpss.h | 9 | ||||
| -rw-r--r-- | src/soc/intel/common/block/lpss/lpss.c | 18 |
2 files changed, 27 insertions, 0 deletions
diff --git a/src/soc/intel/common/block/include/intelblocks/lpss.h b/src/soc/intel/common/block/include/intelblocks/lpss.h index dafe351f02..e80f3ddec5 100644 --- a/src/soc/intel/common/block/include/intelblocks/lpss.h +++ b/src/soc/intel/common/block/include/intelblocks/lpss.h @@ -40,4 +40,13 @@ bool lpss_is_controller_in_reset(uintptr_t base); /* Set controller power state to D0 or D3*/ void lpss_set_power_state(const struct device *dev, enum lpss_pwr_state state); +/* + * Handler to get list of LPSS controllers. The SOC is expected to send out a + * list of pci devfn for all LPSS controllers supported by the SOC. + */ +const pci_devfn_t *soc_lpss_controllers_list(size_t *size); + +/* Check if the device is a LPSS controller */ +bool is_dev_lpss(const struct device *dev); + #endif /* SOC_INTEL_COMMON_BLOCK_LPSS_H */ diff --git a/src/soc/intel/common/block/lpss/lpss.c b/src/soc/intel/common/block/lpss/lpss.c index a519bf65e2..1722dcde08 100644 --- a/src/soc/intel/common/block/lpss/lpss.c +++ b/src/soc/intel/common/block/lpss/lpss.c @@ -89,3 +89,21 @@ void lpss_set_power_state(const struct device *dev, enum lpss_pwr_state state) pci_update_config8(lpss_dev, PME_CTRL_STATUS, ~POWER_STATE_MASK, state); } + +bool is_dev_lpss(const struct device *dev) +{ + static size_t size; + static const pci_devfn_t *lpss_devices; + + if (dev->path.type != DEVICE_PATH_PCI) + return false; + + if (!lpss_devices) + lpss_devices = soc_lpss_controllers_list(&size); + + for (int i = 0; i < size; i++) { + if (lpss_devices[i] == dev->path.pci.devfn) + return true; + } + return false; +} |