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PCI: qcom-ep: Add support for BME notification
Add support to pass BME (Bus Master Enable) notification to Endpoint function driver so that the BME event can be processed by the function. Link: https://lore.kernel.org/r/20230602114756.36586-8-manivannan.sadhasivam@linaro.org Signed-off-by: Manivannan Sadhasivam <manivannan.sadhasivam@linaro.org> Signed-off-by: Lorenzo Pieralisi <lpieralisi@kernel.org> Signed-off-by: Bjorn Helgaas <bhelgaas@google.com> Reviewed-by: Kishon Vijay Abraham I <kishon@kernel.org> Reviewed-by: Damien Le Moal <dlemoal@kernel.org>
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@ -573,6 +573,7 @@ static irqreturn_t qcom_pcie_ep_global_irq_thread(int irq, void *data)
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} else if (FIELD_GET(PARF_INT_ALL_BME, status)) {
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dev_dbg(dev, "Received BME event. Link is enabled!\n");
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pcie_ep->link_status = QCOM_PCIE_EP_LINK_ENABLED;
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pci_epc_bme_notify(pci->ep.epc);
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} else if (FIELD_GET(PARF_INT_ALL_PM_TURNOFF, status)) {
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dev_dbg(dev, "Received PM Turn-off event! Entering L23\n");
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val = readl_relaxed(pcie_ep->parf + PARF_PM_CTRL);
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