diff options
author | Aamir Bohra <aamir.bohra@intel.com> | 2019-07-08 18:29:31 +0530 |
---|---|---|
committer | Martin Roth <martinroth@google.com> | 2019-08-05 22:42:42 +0000 |
commit | 141d90932396317074ea5c445d63e471f2907b7a (patch) | |
tree | fcb4b44ac14424568c0c2909c638d87ebe6f3903 /src/soc/intel/common/block/lpss/lpss.c | |
parent | 45ecc61c03c63aa66e56a814819061a248799387 (diff) |
soc/intel/common/lpss: Add function to check for a LPSS controller
Add an API to check if device is a LPSS controller. This API can be
used for IRQ assignments for LPSS PCI controllers, since the LPSS
controllers have a requirement of unique IRQ assignments and do not
share same IRQ# with other LPSS controllers.
SOC code is reponsible to provide list of the LPSS controllers
supported and needs to implement soc_lpss_controllers_list API,
in case it needs to use this common implementation.
Change-Id: I3f5bb268fc581280bb1b87b6b175a0299a24a44a
Signed-off-by: Aamir Bohra <aamir.bohra@intel.com>
Reviewed-on: https://review.coreboot.org/c/coreboot/+/34137
Reviewed-by: Paul Fagerburg <pfagerburg@chromium.org>
Reviewed-by: Furquan Shaikh <furquan@google.com>
Reviewed-by: Tim Wawrzynczak <twawrzynczak@chromium.org>
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Diffstat (limited to 'src/soc/intel/common/block/lpss/lpss.c')
-rw-r--r-- | src/soc/intel/common/block/lpss/lpss.c | 18 |
1 files changed, 18 insertions, 0 deletions
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; +} |