LS2K/LS7A support 8/16/32-bits pci config access operations, so we can
safely use pci_generic_config_read()/pci_generic_config_write() instead
of pci_generic_config_read32()/pci_generic_config_write32().
Signed-off-by: Huacai Chen <chenhuacai@xxxxxxxxxxx>
---
drivers/pci/controller/pci-loongson.c | 14 ++++++++++++--
1 file changed, 12 insertions(+), 2 deletions(-)
diff --git a/drivers/pci/controller/pci-loongson.c b/drivers/pci/controller/pci-loongson.c
index 48169b1e3817..7140bdd04d35 100644
--- a/drivers/pci/controller/pci-loongson.c
+++ b/drivers/pci/controller/pci-loongson.c
@@ -159,8 +159,15 @@ static int loongson_map_irq(const struct pci_dev *dev, u8 slot, u8 pin)
return val;
}
-/* H/w only accept 32-bit PCI operations */
+/* LS2K/LS7A accept 8/16/32-bit PCI operations */
static struct pci_ops loongson_pci_ops = {
+ .map_bus = pci_loongson_map_bus,
+ .read = pci_generic_config_read,
+ .write = pci_generic_config_write,
+};
+
+/* RS780/SR5690 only accept 32-bit PCI operations */
+static struct pci_ops loongson_pci_ops32 = {
.map_bus = pci_loongson_map_bus,
.read = pci_generic_config_read32,
.write = pci_generic_config_write32,
@@ -218,8 +225,11 @@ static int loongson_pci_probe(struct platform_device *pdev)
}
bridge->sysdata = priv;
- bridge->ops = &loongson_pci_ops;
bridge->map_irq = loongson_map_irq;
+ if (!of_device_is_compatible(node, "loongson,rs780e-pci"))
+ bridge->ops = &loongson_pci_ops;
+ else
+ bridge->ops = &loongson_pci_ops32;
return pci_host_probe(bridge);
}
--
2.27.0
