Commit b6cfe8bd authored by Thierry Reding's avatar Thierry Reding Committed by Bjorn Helgaas
Browse files

PCI: tegra: Use generic accessors where possible 



The Tegra PCI host controller can generate configuration space accesses
with byte, word and dword granularity for devices. Only root ports can't
have their configuration space accessed in this way.

Signed-off-by: default avatarThierry Reding <treding@nvidia.com>
Signed-off-by: default avatarBjorn Helgaas <bhelgaas@google.com>
parent 9e66317d

drivers/pci/host/pci-tegra.c

+22 −2
Original line number Diff line number Diff line
@@ -491,12 +491,32 @@ static void __iomem *tegra_pcie_map_bus(struct pci_bus *bus, 
	return addr;

}



static int tegra_pcie_config_read(struct pci_bus *bus, unsigned int devfn,

				  int where, int size, u32 *value)

{

	if (bus->number == 0)

		return pci_generic_config_read32(bus, devfn, where, size,

						 value);



	return pci_generic_config_read(bus, devfn, where, size, value);

}



static int tegra_pcie_config_write(struct pci_bus *bus, unsigned int devfn,

				   int where, int size, u32 value)

{

	if (bus->number == 0)

		return pci_generic_config_write32(bus, devfn, where, size,

						  value);



	return pci_generic_config_write(bus, devfn, where, size, value);

}



static struct pci_ops tegra_pcie_ops = {

	.add_bus = tegra_pcie_add_bus,

	.remove_bus = tegra_pcie_remove_bus,

	.map_bus = tegra_pcie_map_bus,

	.read = pci_generic_config_read32,

	.write = pci_generic_config_write32,

	.read = tegra_pcie_config_read,

	.write = tegra_pcie_config_write,

};



static unsigned long tegra_pcie_port_get_pex_ctrl(struct tegra_pcie_port *port)

CRA Git | Maintained and supported by SUSTech CRA and CCSE