Merge "cnss2: Set PCIe to D3hot state before suspending PCIe link" (3ddbd32d) · Commits · e / devices / android_kernel_xiaomi_markw

drivers/net/wireless/cnss2/pci.c

+28 −0

Original line number	Diff line number	Diff line
		@@ -143,6 +143,12 @@ int cnss_suspend_pci_link(struct cnss_pci_data *pci_priv)
		if (ret)
		goto out;

		pci_disable_device(pci_priv->pci_dev);

		ret = pci_set_power_state(pci_priv->pci_dev, PCI_D3hot);
		if (ret)
		cnss_pr_err("Failed to set D3Hot, err = %d\n", ret);

		ret = cnss_set_pci_link(pci_priv, PCI_LINK_DOWN);
		if (ret)
		goto out;
		@@ -172,10 +178,18 @@ int cnss_resume_pci_link(struct cnss_pci_data *pci_priv)

		pci_priv->pci_link_state = PCI_LINK_UP;

		ret = pci_enable_device(pci_priv->pci_dev);
		if (ret) {
		cnss_pr_err("Failed to enable PCI device, err = %d\n", ret);
		goto out;
		}

		ret = cnss_set_pci_config_space(pci_priv, RESTORE_PCI_CONFIG_SPACE);
		if (ret)
		goto out;

		pci_set_master(pci_priv->pci_dev);

		if (pci_priv->pci_link_down_ind)
		pci_priv->pci_link_down_ind = false;

		@@ -381,6 +395,12 @@ static int cnss_pci_suspend(struct device *dev)

		cnss_set_pci_config_space(pci_priv,
		SAVE_PCI_CONFIG_SPACE);
		pci_disable_device(pci_dev);

		ret = pci_set_power_state(pci_dev, PCI_D3hot);
		if (ret)
		cnss_pr_err("Failed to set D3Hot, err = %d\n",
		ret);
		}
		}

		@@ -407,10 +427,18 @@ static int cnss_pci_resume(struct device *dev)

		driver_ops = plat_priv->driver_ops;
		if (driver_ops && driver_ops->resume && !pci_priv->pci_link_down_ind) {
		ret = pci_enable_device(pci_dev);
		if (ret)
		cnss_pr_err("Failed to enable PCI device, err = %d\n",
		ret);

		if (pci_priv->saved_state)
		cnss_set_pci_config_space(pci_priv,
		RESTORE_PCI_CONFIG_SPACE);

		pci_set_master(pci_dev);
		cnss_pci_set_mhi_state(pci_priv, CNSS_MHI_RESUME);

		ret = driver_ops->resume(pci_dev);
		}