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PCI: rcar: Convert to use generic config accessors

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Convert the rcar-gen2 host PCI driver to use the generic config access
functions.

This changes the I/O accessors from io(read|write)X to readX/writeX
variants which are equivalent on ARM.

Signed-off-by: Rob Herring <robh@kernel.org>
Signed-off-by: Bjorn Helgaas <bhelgaas@google.com>
Acked-by: Geert Uytterhoeven <geert+renesas@glider.be>
CC: Simon Horman <horms@verge.net.au>
CC: linux-sh@vger.kernel.org
This commit is contained in:
Rob Herring 2015-01-09 20:34:47 -06:00 committed by Bjorn Helgaas
parent 2118672886
commit b44923b78d
1 changed files with 3 additions and 48 deletions
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51
drivers/pci/host/pci-rcar-gen2.c
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@ -131,52 +131,6 @@ static void __iomem *rcar_pci_cfg_base(struct pci_bus *bus, unsigned int devfn,
return priv->reg + (slot >> 1) * 0x100 + where;
}
static int rcar_pci_read_config(struct pci_bus *bus, unsigned int devfn,
int where, int size, u32 *val)
{
void __iomem *reg = rcar_pci_cfg_base(bus, devfn, where);
if (!reg)
return PCIBIOS_DEVICE_NOT_FOUND;
switch (size) {
case 1:
*val = ioread8(reg);
break;
case 2:
*val = ioread16(reg);
break;
default:
*val = ioread32(reg);
break;
}
return PCIBIOS_SUCCESSFUL;
}
static int rcar_pci_write_config(struct pci_bus *bus, unsigned int devfn,
int where, int size, u32 val)
{
void __iomem *reg = rcar_pci_cfg_base(bus, devfn, where);
if (!reg)
return PCIBIOS_DEVICE_NOT_FOUND;
switch (size) {
case 1:
iowrite8(val, reg);
break;
case 2:
iowrite16(val, reg);
break;
default:
iowrite32(val, reg);
break;
}
return PCIBIOS_SUCCESSFUL;
}
/* PCI interrupt mapping */
static int rcar_pci_map_irq(const struct pci_dev *dev, u8 slot, u8 pin)
{
@ -325,8 +279,9 @@ static int rcar_pci_setup(int nr, struct pci_sys_data *sys)
}
static struct pci_ops rcar_pci_ops = {
.read = rcar_pci_read_config,
.write = rcar_pci_write_config,
.map_bus = rcar_pci_cfg_base,
.read = pci_generic_config_read,
.write = pci_generic_config_write,
};
static int rcar_pci_probe(struct platform_device *pdev)