PCI: dwc: dra7xx: Facilitate wrapper and MSI interrupts to be enabled independently

No functional change. Split dra7xx_pcie_enable_interrupts() into
dra7xx_pcie_enable_wrapper_interrupts() and
dra7xx_pcie_enable_msi_interrupts() so that wrapper interrupts and MSI
interrupts can be enabled independently.  This is in preparation for adding
EP mode support to dra7xx driver since EP mode doesn't have to enable
msi_interrupts.

Signed-off-by: Kishon Vijay Abraham I <kishon@ti.com>
Signed-off-by: Bjorn Helgaas <bhelgaas@google.com>

1 files changed, 18 insertions, 6 deletions

diff --git a/drivers/pci/dwc/pci-dra7xx.c b/drivers/pci/dwc/pci-dra7xx.c
index 7c9ed6a6675c..d78974d20360 100644
--- a/drivers/pci/dwc/pci-dra7xx.c
+++ b/drivers/pci/dwc/pci-dra7xx.c
@@ -140,18 +140,30 @@ static int dra7xx_pcie_establish_link(struct dra7xx_pcie *dra7xx)
         return dw_pcie_wait_for_link(pci);
 }
 
-static void dra7xx_pcie_enable_interrupts(struct dra7xx_pcie *dra7xx)
+static void dra7xx_pcie_enable_msi_interrupts(struct dra7xx_pcie *dra7xx)
 {
-        dra7xx_pcie_writel(dra7xx, PCIECTRL_DRA7XX_CONF_IRQSTATUS_MAIN,
-                           ~INTERRUPTS);
-        dra7xx_pcie_writel(dra7xx,
-                           PCIECTRL_DRA7XX_CONF_IRQENABLE_SET_MAIN, INTERRUPTS);
         dra7xx_pcie_writel(dra7xx, PCIECTRL_DRA7XX_CONF_IRQSTATUS_MSI,
                            ~LEG_EP_INTERRUPTS & ~MSI);
-        dra7xx_pcie_writel(dra7xx, PCIECTRL_DRA7XX_CONF_IRQENABLE_SET_MSI,
+
+        dra7xx_pcie_writel(dra7xx,
+                           PCIECTRL_DRA7XX_CONF_IRQENABLE_SET_MSI,
                            MSI | LEG_EP_INTERRUPTS);
 }
 
+static void dra7xx_pcie_enable_wrapper_interrupts(struct dra7xx_pcie *dra7xx)
+{
+        dra7xx_pcie_writel(dra7xx, PCIECTRL_DRA7XX_CONF_IRQSTATUS_MAIN,
+                           ~INTERRUPTS);
+        dra7xx_pcie_writel(dra7xx, PCIECTRL_DRA7XX_CONF_IRQENABLE_SET_MAIN,
+                           INTERRUPTS);
+}
+
+static void dra7xx_pcie_enable_interrupts(struct dra7xx_pcie *dra7xx)
+{
+        dra7xx_pcie_enable_wrapper_interrupts(dra7xx);
+        dra7xx_pcie_enable_msi_interrupts(dra7xx);
+}
+
 static void dra7xx_pcie_host_init(struct pcie_port *pp)
 {
         struct dw_pcie *pci = to_dw_pcie_from_pp(pp);