Merge "cnss2: Add CNSS wrapper function for msm_pcie_reg_dump()" (b7fcc5ad) · Commits · e / devices / android_kernel_fairphone_FP4

drivers/net/wireless/cnss2/pci.c

+36 −5

Original line number	Original line	Diff line number	Diff line
	@@ -364,6 +364,31 @@ static struct cnss_misc_reg wlaon_reg_access_seq[] = {
	#define PCIE_REG_SIZE ARRAY_SIZE(pcie_reg_access_seq)		#define PCIE_REG_SIZE ARRAY_SIZE(pcie_reg_access_seq)
	#define WLAON_REG_SIZE ARRAY_SIZE(wlaon_reg_access_seq)		#define WLAON_REG_SIZE ARRAY_SIZE(wlaon_reg_access_seq)

			#if IS_ENABLED(CONFIG_PCI_MSM)
			/**
			* _cnss_pci_get_reg_dump() - Dump PCIe RC registers for debug
			* @pci_priv: driver PCI bus context pointer
			* @buf: destination buffer pointer
			* @len: length of the buffer
			*
			* This function shall call corresponding PCIe root complex driver API
			* to dump PCIe RC registers for debug purpose.
			*
			* Return: 0 for success, negative value for error
			*/
			static int _cnss_pci_get_reg_dump(struct cnss_pci_data *pci_priv,
			u8 *buf, u32 len)
			{
			return msm_pcie_reg_dump(pci_priv->pci_dev, buf, len);
			}
			#else
			static int _cnss_pci_get_reg_dump(struct cnss_pci_data *pci_priv,
			u8 *buf, u32 len)
			{
			return 0;
			}
			#endif /* CONFIG_PCI_MSM */

	int cnss_pci_check_link_status(struct cnss_pci_data *pci_priv)		int cnss_pci_check_link_status(struct cnss_pci_data *pci_priv)
	{		{
	u16 device_id;		u16 device_id;
	@@ -930,15 +955,21 @@ EXPORT_SYMBOL(cnss_pci_link_down);
	int cnss_pci_get_reg_dump(struct device dev, uint8_t buffer, uint32_t len)		int cnss_pci_get_reg_dump(struct device dev, uint8_t buffer, uint32_t len)
	{		{
	struct pci_dev *pci_dev = to_pci_dev(dev);		struct pci_dev *pci_dev = to_pci_dev(dev);
			struct cnss_pci_data *pci_priv = cnss_get_pci_priv(pci_dev);

	if (!pci_dev) {		if (!pci_priv) {
	cnss_pr_err("pci_dev is NULL\n");		cnss_pr_err("pci_priv is NULL\n");
	return -EINVAL;		return -ENODEV;
			}

			if (pci_priv->pci_link_state == PCI_LINK_DOWN) {
			cnss_pr_dbg("No PCIe reg dump since PCIe device is suspended(D3)\n");
			return -EACCES;
	}		}

	cnss_pr_dbg("Get pci reg dump for hang data\n");		cnss_pr_dbg("Start to get PCIe reg dump\n");

	return msm_pcie_reg_dump(pci_dev, buffer, len);		return _cnss_pci_get_reg_dump(pci_priv, buffer, len);
	}		}
	EXPORT_SYMBOL(cnss_pci_get_reg_dump);		EXPORT_SYMBOL(cnss_pci_get_reg_dump);