msm: pcie: mpq8064: Add system wakeup support to PCIe controller
Update the PCIe controller to register for wakeup interrupt enabling
the PCIe devices to wakeup the system if suspended.
Change-Id: I49960702c0abc1e1406dff622843456e0f0547c6
Signed-off-by: Niranjana Vishwanathapura <nvishwan@codeaurora.org>
diff --git a/arch/arm/mach-msm/pcie.c b/arch/arm/mach-msm/pcie.c
index d954b53..709c8e8 100644
--- a/arch/arm/mach-msm/pcie.c
+++ b/arch/arm/mach-msm/pcie.c
@@ -619,6 +619,7 @@
msm_pcie_dev.pdev = pdev;
pdata = pdev->dev.platform_data;
msm_pcie_dev.gpio = pdata->gpio;
+ msm_pcie_dev.wake_n = pdata->wake_n;
msm_pcie_dev.vreg = msm_pcie_vreg_info;
msm_pcie_dev.clk = msm_pcie_clk_info;
msm_pcie_dev.res = msm_pcie_res_info;
@@ -706,6 +707,26 @@
DECLARE_PCI_FIXUP_EARLY(PCIE_VENDOR_ID_RCP, PCIE_DEVICE_ID_RCP,
msm_pcie_fixup_early);
+/* enable wake_n interrupt during suspend */
+static void msm_pcie_fixup_suspend(struct pci_dev *dev)
+{
+ PCIE_DBG("enabling wake_n\n");
+ if (dev->pcie_type == PCI_EXP_TYPE_ROOT_PORT)
+ enable_irq(msm_pcie_dev.wake_n);
+}
+DECLARE_PCI_FIXUP_SUSPEND(PCIE_VENDOR_ID_RCP, PCIE_DEVICE_ID_RCP,
+ msm_pcie_fixup_suspend);
+
+/* disable wake_n interrupt when system is not in suspend */
+static void msm_pcie_fixup_resume(struct pci_dev *dev)
+{
+ PCIE_DBG("disabling wake_n\n");
+ if (dev->pcie_type == PCI_EXP_TYPE_ROOT_PORT)
+ disable_irq(msm_pcie_dev.wake_n);
+}
+DECLARE_PCI_FIXUP_RESUME(PCIE_VENDOR_ID_RCP, PCIE_DEVICE_ID_RCP,
+ msm_pcie_fixup_resume);
+
/*
* actual physical (BAR) address of the device resources starts from
* MSM_PCIE_DEV_BAR_ADDR; the system axi address for the device resources starts