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authorRob Herring <robh@kernel.org>2015-01-10 05:34:43 +0300
committerBjorn Helgaas <bhelgaas@google.com>2015-01-31 01:14:43 +0300
commit8d6bd97dc0ff8bcd4a515340c115a8b86768a04c (patch)
tree8e795fdc8c3294c7f24c5fb741516689212ee40f
parent7a11e9c487493b38bc38296b8b73303445303ff2 (diff)
downloadlinux-8d6bd97dc0ff8bcd4a515340c115a8b86768a04c.tar.xz
ARM: ks8695: Convert PCI to use generic config accessors
Convert the ks8695 PCI driver to use the generic config access functions. This changes accesses from __raw_readX/__raw_writeX to readX/writeX variants. Signed-off-by: Rob Herring <robh@kernel.org> Signed-off-by: Bjorn Helgaas <bhelgaas@google.com> Acked-by: Greg Ungerer <gerg@uclinux.org> CC: Russell King <linux@arm.linux.org.uk> CC: linux-arm-kernel@lists.infradead.org
-rw-r--r--arch/arm/mach-ks8695/pci.c77
1 files changed, 6 insertions, 71 deletions
diff --git a/arch/arm/mach-ks8695/pci.c b/arch/arm/mach-ks8695/pci.c
index bb18193b4bac..c1bc4c3716ed 100644
--- a/arch/arm/mach-ks8695/pci.c
+++ b/arch/arm/mach-ks8695/pci.c
@@ -38,8 +38,6 @@
static int pci_dbg;
-static int pci_cfg_dbg;
-
static void ks8695_pci_setupconfig(unsigned int bus_nr, unsigned int devfn, unsigned int where)
{
@@ -59,75 +57,11 @@ static void ks8695_pci_setupconfig(unsigned int bus_nr, unsigned int devfn, unsi
}
}
-
-/*
- * The KS8695 datasheet prohibits anything other than 32bit accesses
- * to the IO registers, so all our configuration must be done with
- * 32bit operations, and the correct bit masking and shifting.
- */
-
-static int ks8695_pci_readconfig(struct pci_bus *bus,
- unsigned int devfn, int where, int size, u32 *value)
-{
- ks8695_pci_setupconfig(bus->number, devfn, where);
-
- *value = __raw_readl(KS8695_PCI_VA + KS8695_PBCD);
-
- switch (size) {
- case 4:
- break;
- case 2:
- *value = *value >> ((where & 2) * 8);
- *value &= 0xffff;
- break;
- case 1:
- *value = *value >> ((where & 3) * 8);
- *value &= 0xff;
- break;
- }
-
- if (pci_cfg_dbg) {
- printk("read: %d,%08x,%02x,%d: %08x (%08x)\n",
- bus->number, devfn, where, size, *value,
- __raw_readl(KS8695_PCI_VA + KS8695_PBCD));
- }
-
- return PCIBIOS_SUCCESSFUL;
-}
-
-static int ks8695_pci_writeconfig(struct pci_bus *bus,
- unsigned int devfn, int where, int size, u32 value)
+static void __iomem *ks8695_pci_map_bus(struct pci_bus *bus, unsigned int devfn,
+ int where)
{
- unsigned long tmp;
-
- if (pci_cfg_dbg) {
- printk("write: %d,%08x,%02x,%d: %08x\n",
- bus->number, devfn, where, size, value);
- }
-
ks8695_pci_setupconfig(bus->number, devfn, where);
-
- switch (size) {
- case 4:
- __raw_writel(value, KS8695_PCI_VA + KS8695_PBCD);
- break;
- case 2:
- tmp = __raw_readl(KS8695_PCI_VA + KS8695_PBCD);
- tmp &= ~(0xffff << ((where & 2) * 8));
- tmp |= value << ((where & 2) * 8);
-
- __raw_writel(tmp, KS8695_PCI_VA + KS8695_PBCD);
- break;
- case 1:
- tmp = __raw_readl(KS8695_PCI_VA + KS8695_PBCD);
- tmp &= ~(0xff << ((where & 3) * 8));
- tmp |= value << ((where & 3) * 8);
-
- __raw_writel(tmp, KS8695_PCI_VA + KS8695_PBCD);
- break;
- }
-
- return PCIBIOS_SUCCESSFUL;
+ return KS8695_PCI_VA + KS8695_PBCD;
}
static void ks8695_local_writeconfig(int where, u32 value)
@@ -137,8 +71,9 @@ static void ks8695_local_writeconfig(int where, u32 value)
}
static struct pci_ops ks8695_pci_ops = {
- .read = ks8695_pci_readconfig,
- .write = ks8695_pci_writeconfig,
+ .map_bus = ks8695_pci_map_bus,
+ .read = pci_generic_config_read32,
+ .write = pci_generic_config_write32,
};
static struct resource pci_mem = {