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path: root/drivers/pci/controller/dwc/pcie-histb.c
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2020-07-17PCI: dwc: Convert to devm_platform_ioremap_resource_byname()Dejin Zheng
Use devm_platform_ioremap_resource_byname() to simplify the code since it contains platform_get_resource_byname() and devm_ioremap_resource() respectively. Link: https://lore.kernel.org/r/20200708164013.5076-1-zhengdejin5@gmail.com Signed-off-by: Dejin Zheng <zhengdejin5@gmail.com> Signed-off-by: Lorenzo Pieralisi <lorenzo.pieralisi@arm.com> Reviewed-by: Gustavo Pimentel <gustavo.pimentel@synopsys.com> Reviewed-by: Rob Herring <robh@kernel.org>
2019-09-04PCI: histb: Propagate errors for optional regulatorsThierry Reding
regulator_get_optional() can fail for a number of reasons besides probe deferral. It can for example return -ENOMEM if it runs out of memory as it tries to allocate data structures. Propagating only -EPROBE_DEFER is problematic because it results in these legitimately fatal errors being treated as "regulator not specified in DT". What we really want is to ignore the optional regulators only if they have not been specified in DT. regulator_get_optional() returns -ENODEV in this case, so that's the special case that we need to handle. So we propagate all errors, except -ENODEV, so that real failures will still cause the driver to fail probe. Signed-off-by: Thierry Reding <treding@nvidia.com> Signed-off-by: Lorenzo Pieralisi <lorenzo.pieralisi@arm.com> Reviewed-by: Andrew Murray <andrew.murray@arm.com> Cc: Shawn Guo <shawn.guo@linaro.org>
2018-11-08PCI: histb: Constify dw_pcie_host_ops structureJulia Lawall
The dw_pcie_host_ops structure is only stored in the ops field of a pcie_port structure, and this field is const, so make the dw_pcie_host_ops structure const as well. Done with the help of Coccinelle. Signed-off-by: Julia Lawall <Julia.Lawall@lip6.fr> Signed-off-by: Lorenzo Pieralisi <lorenzo.pieralisi@arm.com> Acked-by: Shawn Guo <shawn.guo@linaro.org>
2018-07-13PCI: histb: Drop unnecessary root_bus_nr settingShawn Guo
Function dw_pcie_host_init() already initializes the root_bus_nr field of 'struct pcie_port', so the -1 assignment prior to calling dw_pcie_host_init() in platform specific driver is not really needed. Drop it. Signed-off-by: Shawn Guo <shawn.guo@linaro.org> Signed-off-by: Lorenzo Pieralisi <lorenzo.pieralisi@arm.com> Cc: Jianguo Sun <sunjianguo1@huawei.com>
2018-06-08PCI: Collect all native drivers under drivers/pci/controller/Shawn Lin
Native PCI drivers for root complex devices were originally all in drivers/pci/host/. Some of these devices can also be operated in endpoint mode. Drivers for endpoint mode didn't seem to fit in the "host" directory, so we put both the root complex and endpoint drivers in per-device directories, e.g., drivers/pci/dwc/, drivers/pci/cadence/, etc. These per-device directories contain trivial Kconfig and Makefiles and clutter drivers/pci/. Make a new drivers/pci/controllers/ directory and collect all the device-specific drivers there. No functional change intended. Link: https://lkml.kernel.org/r/1520304202-232891-1-git-send-email-shawn.lin@rock-chips.com Signed-off-by: Shawn Lin <shawn.lin@rock-chips.com> [bhelgaas: changelog] Signed-off-by: Bjorn Helgaas <bhelgaas@google.com>