[PATCH v21 1/9] PCI: imx6: Add helper function imx_pcie_add_lut_by_rid()

[Frank Li via B4 Relay <devnull+Frank.Li.nxp.com@kernel.org>]

From: Frank Li <Frank.Li@nxp.com>

Add helper function imx_pcie_add_lut_by_rid(), which will be used for MSI
doorbell support in endpoint mode in the future. No functional change.

Signed-off-by: Frank Li <Frank.Li@nxp.com>
---
- change in v20
- update commit message.

change from v14 to v16
- none

change from v13 to v14
- new patch
---
 drivers/pci/controller/dwc/pci-imx6.c | 17 ++++++++++-------
 1 file changed, 10 insertions(+), 7 deletions(-)

diff --git a/drivers/pci/controller/dwc/pci-imx6.c b/drivers/pci/controller/dwc/pci-imx6.c
index 5a38cfaf989b1c9606660f2e0bcd10d88fa2d6b1..032b906c44dfaa374a32f511098402a494ef5677 100644
--- a/drivers/pci/controller/dwc/pci-imx6.c
+++ b/drivers/pci/controller/dwc/pci-imx6.c
@@ -1096,18 +1096,14 @@ static void imx_pcie_remove_lut(struct imx_pcie *imx_pcie, u16 rid)
 	}
 }
 
-static int imx_pcie_enable_device(struct pci_host_bridge *bridge,
-				  struct pci_dev *pdev)
+static int imx_pcie_add_lut_by_rid(struct imx_pcie *imx_pcie, u32 rid)
 {
-	struct imx_pcie *imx_pcie = to_imx_pcie(to_dw_pcie_from_pp(bridge->sysdata));
-	u32 sid_i, sid_m, rid = pci_dev_id(pdev);
+	struct device *dev = imx_pcie->pci->dev;
 	struct device_node *target;
-	struct device *dev;
+	u32 sid_i, sid_m;
 	int err_i, err_m;
 	u32 sid = 0;
 
-	dev = imx_pcie->pci->dev;
-
 	target = NULL;
 	err_i = of_map_id(dev->of_node, rid, "iommu-map", "iommu-map-mask",
 			  &target, &sid_i);
@@ -1182,6 +1178,13 @@ static int imx_pcie_enable_device(struct pci_host_bridge *bridge,
 	return imx_pcie_add_lut(imx_pcie, rid, sid);
 }
 
+static int imx_pcie_enable_device(struct pci_host_bridge *bridge, struct pci_dev *pdev)
+{
+	struct imx_pcie *imx_pcie = to_imx_pcie(to_dw_pcie_from_pp(bridge->sysdata));
+
+	return imx_pcie_add_lut_by_rid(imx_pcie, pci_dev_id(pdev));
+}
+
 static void imx_pcie_disable_device(struct pci_host_bridge *bridge,
 				    struct pci_dev *pdev)
 {

-- 
2.34.1