Add a exported function to convert lnkctl2speed to enum pci_bus_speed,
so that other kernel drivers can use it.
Signed-off-by: Krishna Chaitanya Chundru <krishna.chundru@xxxxxxxxxxxxxxxx>
---
drivers/pci/pci.c | 12 ++++++++++++
include/linux/pci.h | 1 +
2 files changed, 13 insertions(+)
diff --git a/drivers/pci/pci.c b/drivers/pci/pci.c
index 869d204a70a3..75505437a9c9 100644
--- a/drivers/pci/pci.c
+++ b/drivers/pci/pci.c
@@ -6011,6 +6011,18 @@ int pcie_link_speed_mbps(struct pci_dev *pdev)
}
EXPORT_SYMBOL(pcie_link_speed_mbps);
+/**
+ * pci_lnkctl2_bus_speed - converts lnkctl2 speed to pci_bus_speed
+ * @speed: LNKCAP2 SLS value
+ *
+ * Returns pci_bus_speed
+ */
+enum pci_bus_speed pci_lnkctl2_bus_speed(int speed)
+{
+ return pcie_link_speed[speed];
+}
+EXPORT_SYMBOL(pci_lnkctl2_bus_speed);
+
/**
* pcie_bandwidth_available - determine minimum link settings of a PCIe
* device and its bandwidth limitation
diff --git a/include/linux/pci.h b/include/linux/pci.h
index 9ae199c1e698..b84473f228c8 100644
--- a/include/linux/pci.h
+++ b/include/linux/pci.h
@@ -1653,6 +1653,7 @@ unsigned char pci_bus_max_busnr(struct pci_bus *bus);
void pci_setup_bridge(struct pci_bus *bus);
resource_size_t pcibios_window_alignment(struct pci_bus *bus,
unsigned long type);
+enum pci_bus_speed pci_lnkctl2_bus_speed(int speed);
#define PCI_VGA_STATE_CHANGE_BRIDGE (1 << 0)
#define PCI_VGA_STATE_CHANGE_DECODES (1 << 1)
--
2.34.1
