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ARM: ks8695: Convert PCI to use generic config accessors

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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
This commit is contained in:
Rob Herring
2015-01-09 20:34:43 -06:00
committed by Bjorn Helgaas
parent 7a11e9c487
commit 8d6bd97dc0
1 changed files with 6 additions and 71 deletions
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77
arch/arm/mach-ks8695/pci.c
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@@ -38,8 +38,6 @@
static int pci_dbg; static int pci_dbg;
static int pci_cfg_dbg;
static void ks8695_pci_setupconfig(unsigned int bus_nr, unsigned int devfn, unsigned int where) 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
} }
} }
static void __iomem *ks8695_pci_map_bus(struct pci_bus *bus, unsigned int devfn,
/* int where)
* 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); ks8695_pci_setupconfig(bus->number, devfn, where);
return KS8695_PCI_VA + KS8695_PBCD;
*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)
{
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;
} }
static void ks8695_local_writeconfig(int where, u32 value) 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 = { static struct pci_ops ks8695_pci_ops = {
.read = ks8695_pci_readconfig, .map_bus = ks8695_pci_map_bus,
.write = ks8695_pci_writeconfig, .read = pci_generic_config_read32,
.write = pci_generic_config_write32,
}; };
static struct resource pci_mem = { static struct resource pci_mem = {