Bring the switch case in pcie_link_speed_mbps to new function to
the header file so that it can be used in other places like
in controller driver.
Create a new macro to convert from MBps to frequency.
Signed-off-by: Krishna chaitanya chundru <quic_krichai@xxxxxxxxxxx>
---
drivers/pci/pci.c | 19 +------------------
drivers/pci/pci.h | 24 ++++++++++++++++++++++++
2 files changed, 25 insertions(+), 18 deletions(-)
diff --git a/drivers/pci/pci.c b/drivers/pci/pci.c
index d8f11a078924..b441ab862a8d 100644
--- a/drivers/pci/pci.c
+++ b/drivers/pci/pci.c
@@ -6309,24 +6309,7 @@ int pcie_link_speed_mbps(struct pci_dev *pdev)
if (err)
return err;
- switch (to_pcie_link_speed(lnksta)) {
- case PCIE_SPEED_2_5GT:
- return 2500;
- case PCIE_SPEED_5_0GT:
- return 5000;
- case PCIE_SPEED_8_0GT:
- return 8000;
- case PCIE_SPEED_16_0GT:
- return 16000;
- case PCIE_SPEED_32_0GT:
- return 32000;
- case PCIE_SPEED_64_0GT:
- return 64000;
- default:
- break;
- }
-
- return -EINVAL;
+ return pcie_link_speed_to_mbps(to_pcie_link_speed(lnksta));
}
EXPORT_SYMBOL(pcie_link_speed_mbps);
diff --git a/drivers/pci/pci.h b/drivers/pci/pci.h
index 2336a8d1edab..82e715ebe383 100644
--- a/drivers/pci/pci.h
+++ b/drivers/pci/pci.h
@@ -282,6 +282,30 @@ void pci_bus_put(struct pci_bus *bus);
(speed) == PCIE_SPEED_2_5GT ? 2500*8/10 : \
0)
+static inline int pcie_link_speed_to_mbps(enum pci_bus_speed speed)
+{
+ switch (speed) {
+ case PCIE_SPEED_2_5GT:
+ return 2500;
+ case PCIE_SPEED_5_0GT:
+ return 5000;
+ case PCIE_SPEED_8_0GT:
+ return 8000;
+ case PCIE_SPEED_16_0GT:
+ return 16000;
+ case PCIE_SPEED_32_0GT:
+ return 32000;
+ case PCIE_SPEED_64_0GT:
+ return 64000;
+ default:
+ break;
+ }
+
+ return -EINVAL;
+}
+
+#define PCIE_MBS2FREQ(speed) (pcie_link_speed_to_mbps(speed) * 1000)
+
const char *pci_speed_string(enum pci_bus_speed speed);
enum pci_bus_speed pcie_get_speed_cap(struct pci_dev *dev);
enum pcie_link_width pcie_get_width_cap(struct pci_dev *dev);
--
2.42.0
