Merge "msm: pcie: enable client to control config space shadowing" (27dc99b6) · Commits · e / devices / android_kernel_sony_msm8994

arch/arm/mach-msm/include/mach/msm_pcie.h

+12 −0

Original line number	Diff line number	Diff line
		@@ -106,4 +106,16 @@ int msm_pcie_deregister_event(struct msm_pcie_register_event *reg);
		* Return: 0 on success, negative value on error
		*/
		int msm_pcie_recover_config(struct pci_dev *dev);

		/**
		* msm_pcie_shadow_control - control the shadowing of PCIe config space.
		* @dev: pci device structure
		* @enable: shadowing should be enabled or disabled
		*
		* This function gives PCIe endpoint device drivers the control to enable
		* or disable the shadowing of PCIe config space.
		*
		* Return: 0 on success, negative value on error
		*/
		int msm_pcie_shadow_control(struct pci_dev *dev, bool enable);
		#endif

+28 −0

Original line number	Diff line number	Diff line
		@@ -2259,3 +2259,31 @@ int msm_pcie_recover_config(struct pci_dev *dev)
		return ret;
		}
		EXPORT_SYMBOL(msm_pcie_recover_config);

		int msm_pcie_shadow_control(struct pci_dev *dev, bool enable)
		{
		int ret = 0;
		struct msm_pcie_dev_t *pcie_dev;

		if (dev) {
		pcie_dev = PCIE_BUS_PRIV_DATA(dev);
		PCIE_DBG(pcie_dev,
		"Recovery for the link of RC%d\n", pcie_dev->rc_idx);
		} else {
		pr_err("PCIe: the input pci dev is NULL.\n");
		return -ENODEV;
		}

		PCIE_DBG(pcie_dev,
		"The shadowing of RC%d is %s enabled currently.\n",
		pcie_dev->rc_idx, pcie_dev->shadow_en ? "" : "not");

		pcie_dev->shadow_en = enable;

		PCIE_DBG(pcie_dev,
		"Shadowing of RC%d is turned %s upon user's request.\n",
		pcie_dev->rc_idx, enable ? "on" : "off");

		return ret;
		}
		EXPORT_SYMBOL(msm_pcie_shadow_control);