diff mbox

[14/16] pci/host: tegra: convert to use generic config accesses

Message ID 1420857290-8373-15-git-send-email-robh@kernel.org
State Accepted, archived
Headers show

Commit Message

Rob Herring (Arm) Jan. 10, 2015, 2:34 a.m. UTC 
Convert the tegra host PCI driver to use the generic config access
functions.

Signed-off-by: Rob Herring <robh@kernel.org>
Cc: Thierry Reding <thierry.reding@gmail.com>
Cc: Bjorn Helgaas <bhelgaas@google.com>
Cc: Stephen Warren <swarren@wwwdotorg.org>
Cc: Alexandre Courbot <gnurou@gmail.com>
Cc: linux-tegra@vger.kernel.org
Cc: linux-pci@vger.kernel.org
---
 drivers/pci/host/pci-tegra.c | 55 +++-----------------------------------------
 1 file changed, 3 insertions(+), 52 deletions(-)

Comments

Thierry Reding Jan. 12, 2015, 10:07 a.m. UTC | #1 
On Fri, Jan 09, 2015 at 08:34:48PM -0600, Rob Herring wrote:
> Convert the tegra host PCI driver to use the generic config access

Nit: s/tegra/Tegra/

Other than than looks like great cleanup:

Tested-by: Thierry Reding <treding@nvidia.com>
Acked-by: Thierry Reding <treding@nvidia.com>
diff mbox

Patch

diff --git a/drivers/pci/host/pci-tegra.c b/drivers/pci/host/pci-tegra.c
index a800ae9..44fd31b 100644
--- a/drivers/pci/host/pci-tegra.c
+++ b/drivers/pci/host/pci-tegra.c
@@ -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)