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authorLiviu Dudau <Liviu.Dudau@arm.com>2014-09-29 10:29:27 -0400
committerBjorn Helgaas <bhelgaas@google.com>2014-09-30 19:08:57 -0400
commit41e5c0f81d3e676d671d96a0a1fafb27abfbd9d7 (patch)
tree674d5c5bc98998014d5b454f059bb052660057d5 /drivers/regulator/arizona-micsupp.c
parent670ba0c8883b576d0aec28bd7a838358a4be1406 (diff)
of/pci: Add pci_get_new_domain_nr() and of_get_pci_domain_nr()
Add pci_get_new_domain_nr() to allocate a new domain number and of_get_pci_domain_nr() to retrieve the PCI domain number of a given device from DT. Host bridge drivers or architecture-specific code can choose to implement their PCI domain number policy using these two functions. Using of_get_pci_domain_nr() guarantees a stable PCI domain number on every boot provided that all host bridge controllers are assigned a number in the device tree using "linux,pci-domain" property. Mixing use of pci_get_new_domain_nr() and of_get_pci_domain_nr() is not recommended as it can lead to potentially conflicting domain numbers being assigned to root buses behind different host bridges. Signed-off-by: Liviu Dudau <Liviu.Dudau@arm.com> Signed-off-by: Bjorn Helgaas <bhelgaas@google.com> CC: Arnd Bergmann <arnd@arndb.de> CC: Grant Likely <grant.likely@linaro.org> CC: Rob Herring <robh+dt@kernel.org> CC: Catalin Marinas <catalin.marinas@arm.com>
Diffstat (limited to 'drivers/regulator/arizona-micsupp.c')
0 files changed, 0 insertions, 0 deletions