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[v2,10/22] PCI: dwc: dra7xx: Facilitate wrapper and msi interrupts to be enabled independently

Message ID 1487325042-28227-11-git-send-email-kishon@ti.com (mailing list archive)
State New, archived
Delegated to: Bjorn Helgaas
Headers show

Commit Message

Kishon Vijay Abraham I Feb. 17, 2017, 9:50 a.m. UTC 
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>
---
 drivers/pci/dwc/pci-dra7xx.c |   24 ++++++++++++++++++------
 1 file changed, 18 insertions(+), 6 deletions(-)
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Patch

diff --git a/drivers/pci/dwc/pci-dra7xx.c b/drivers/pci/dwc/pci-dra7xx.c
index c6fef0a..8d2d02f 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);