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PCI: tegra: Convert to use generic config accessors 

Convert the Tegra host PCI driver to use the generic config access
functions.

Tested-by: Thierry Reding <treding@nvidia.com>
Signed-off-by: Rob Herring <robh@kernel.org>
Signed-off-by: Bjorn Helgaas <bhelgaas@google.com>
Acked-by: Thierry Reding <treding@nvidia.com>
CC: Stephen Warren <swarren@wwwdotorg.org>
CC: Alexandre Courbot <gnurou@gmail.com>
CC: linux-tegra@vger.kernel.org
This commit is contained in:
Rob Herring 2015-01-09 20:34:48 -06:00 committed by Bjorn Helgaas
parent b44923b78d
commit 0e7ac8de01
1 changed files with 3 additions and 52 deletions
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55
drivers/pci/host/pci-tegra.c
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@ -480,59 +480,10 @@ static void __iomem *tegra_pcie_conf_address(struct pci_bus *bus,
return addr;
}
static int tegra_pcie_read_conf(struct pci_bus *bus, unsigned int devfn,
int where, int size, u32 *value)
{
void __iomem *addr;
addr = tegra_pcie_conf_address(bus, devfn, where);
if (!addr) {
*value = 0xffffffff;
return PCIBIOS_DEVICE_NOT_FOUND;
}
*value = readl(addr);
if (size == 1)
*value = (*value >> (8 * (where & 3))) & 0xff;
else if (size == 2)
*value = (*value >> (8 * (where & 3))) & 0xffff;
return PCIBIOS_SUCCESSFUL;
}
static int tegra_pcie_write_conf(struct pci_bus *bus, unsigned int devfn,
int where, int size, u32 value)
{
void __iomem *addr;
u32 mask, tmp;
addr = tegra_pcie_conf_address(bus, devfn, where);
if (!addr)
return PCIBIOS_DEVICE_NOT_FOUND;
if (size == 4) {
writel(value, addr);
return PCIBIOS_SUCCESSFUL;
}
if (size == 2)
mask = ~(0xffff << ((where & 0x3) * 8));
else if (size == 1)
mask = ~(0xff << ((where & 0x3) * 8));
else
return PCIBIOS_BAD_REGISTER_NUMBER;
tmp = readl(addr) & mask;
tmp |= value << ((where & 0x3) * 8);
writel(tmp, addr);
return PCIBIOS_SUCCESSFUL;
}
static struct pci_ops tegra_pcie_ops = {
.read = tegra_pcie_read_conf,
.write = tegra_pcie_write_conf,
.map_bus = tegra_pcie_conf_address,
.read = pci_generic_config_read32,
.write = pci_generic_config_write32,
};
static unsigned long tegra_pcie_port_get_pex_ctrl(struct tegra_pcie_port *port)